JP2011077783A - Speaker apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thin and compact speaker apparatus that prevents a bonding member for bonding a static part and a protection member, or bonding the static part and an edge from spreading to an edge. <P>SOLUTION: In the speaker apparatus, a bonding member housing part that houses a bonding member and forms a prescribed gap between a supporting part of a static part and an edge or a protection member is formed in one of the supporting part of the static part and the protection member. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a speaker device.

  Portable electronic devices such as mobile phones, portable radios and PDAs are required to be small and thin for the entire device for the purpose of carrying. Accordingly, the speaker device used in such portable electronic devices is also required to be thin and small.

  In general, a speaker device has an outer peripheral portion of an edge attached to a stationary portion (frame and / or yoke) (see, for example, Patent Document 1). In Patent Literature 1, when the diaphragm is supported by the frame by bonding and fixing the outer peripheral flat part of the diaphragm to the frame, a plurality of through holes are formed in the outer peripheral flat part of the diaphragm. Then, the adhesive is caused to wrap around both sides of the diaphragm through these through holes, thereby causing the adhesive to function not only as an adhesive means but also as a locking tool, thereby improving the fixing strength of the diaphragm to the frame. A speaker is described. In a known speaker device as described in Patent Document 1, the outer peripheral portion of the edge and the stationary portion are attached by applying a joining member such as an adhesive to the outer periphery or stationary portion of the edge.

In such a speaker device, in order to achieve both a reduction in thickness and a reduction in size, for example, the effective vibration area of the diaphragm and the edge can be increased by relatively reducing the joint area between the edge and the stationary part. Conceivable.

JP 2002-101493 A ([0029], FIG. 3)

However, when the effective vibration area is enlarged, the joint area between the edge and the stationary part may be relatively small. Further, when the joining member is applied, the joining member is applied in an annular shape, but an intersection is formed on the path between the application start position and the application end position of the joining member so that application unevenness is not formed. At this time, the application amount of the joining member at the intersection may be relatively large.

For this reason, for example, in a speaker device as described in Patent Document 1, when joining an edge and a stationary part with a joining member, the joining member may diffuse to the edge or the like. At this time, for example, a bonding member adheres to a part of the edge, which causes a problem that the edge cannot perform its function.

FIG. 11 of Patent Document 1 shows a speaker device including a cover on a stationary part. When the cover is provided on the frame, it is necessary to join the cover to the frame in a state where the cover is closer to the diaphragm or the edge in order to reduce the thickness. In this case, the joining member applied to the cover or the frame may diffuse to the edge or the like. In particular, since the application amount of the joining member is relatively large as described above at the intersection, the joining member may diffuse to the edge. When the joining member adheres to the edge in this way, there arises a problem that the edge cannot perform its function.

  This invention is made | formed in view of the situation mentioned above, and makes it an example of a subject to solve the above problems, and provides the speaker apparatus which can solve these subjects. With the goal.

In order to achieve such an object, the present invention comprises at least the configurations according to the following independent claims.
A speaker device according to a first aspect of the present invention includes a vibrating body, a magnetic circuit, a stationary portion that supports the vibrating body and the magnetic circuit, and a protection member provided in the stationary portion, and the vibration device The body includes a diaphragm and an edge that supports the diaphragm on the stationary part, and the stationary part includes a support part that supports the edge and the protection member, and the support part of the stationary part, The edge or the protection member is joined by a joining member, and the joining member is accommodated in one of the support part of the stationary part or the protection member, and the support part and the edge or the protection member It is characterized in that a joining member accommodating portion that forms a predetermined gap therebetween is formed.

  According to a second aspect of the present invention, there is provided a speaker device including a vibrating body, a magnetic circuit, a stationary portion that supports the vibrating body and the magnetic circuit, and the vibrating body includes: a diaphragm; The stationary part has an edge that supports the diaphragm, and the stationary part includes a supporting part that supports the edge, and the supporting part of the stationary part and the edge are joined by a joining member, and the stationary part One of the support part and the edge is characterized in that a joining member accommodating part for accommodating the joining member and forming a specified gap between the supporting part and the edge is formed.

It is a perspective view which shows the structure of the speaker apparatus which concerns on Embodiment 1 of this invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a perspective view which shows schematic structure of the vibrating body for acoustic transducers. It is a perspective view which shows schematic structure of the rear surface of the vibrating body for acoustic transducers. It is CC sectional drawing of FIG. It is explanatory drawing which shows the relationship of the curvature radius of the vibrating body for acoustic transducers shown in FIG. It is sectional drawing which shows the cross-sectional shape of the conventional vibrating body for acoustic transducers. It is sectional drawing which shows the periphery of a 2nd reinforcement part. It is a perspective view of the speaker apparatus by which the vibrating body 2 is arrange | positioned in the front surface of the flame | frame. It is a perspective view of the speaker apparatus except a vibrating body from FIG. It is a perspective view which shows the schematic structure of the rear surface of the speaker apparatus shown in FIG. 6 is a top view showing a frame of a speaker device according to Embodiment 2. FIG. 6 is a top view showing a vibrating body of a speaker device according to Embodiment 3. FIG. FIG. 10 is a rear view showing a grill frame of the speaker device according to the fourth embodiment. FIG. 10 is a front view showing a grill frame of a speaker device according to a fifth embodiment. FIG. 10 is a rear view showing a grill frame of the speaker device according to Embodiment 5. It is DD sectional drawing of FIG. FIG. 10 is a front view of a speaker device according to a sixth embodiment. It is EE sectional drawing of FIG. It is sectional drawing which shows the flame | frame and grille frame which are shown in FIG. It is a front view which shows a mobile telephone provided with the speaker apparatus which concerns on this invention. It is sectional drawing which shows the door of a motor vehicle provided with the speaker apparatus which concerns on this invention.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing a schematic configuration of the configuration of the speaker device 1 according to Embodiment 1 of the present invention. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line BB in FIG. 4 is a perspective view showing a schematic configuration of an acoustic transducer vibrating body (hereinafter referred to as a vibrating body) 2 included in the speaker device 1. FIG. 5 is a rear side of the vibrating body 2 (opposite to the acoustic radiation direction). FIG. 6 is a cross-sectional view taken along the line CC in FIG. 4. As shown in FIGS. 1 to 3, in the speaker device 1, the vibrating body 2 and the magnetic circuit 20 are housed in a frame 30 and a grill frame (protective member) 50 provided in front of the frame 30 (on the acoustic radiation direction side). Configured.

4 is a perspective view showing the front surface (acoustic radiation direction) of the vibrating body 2 of the present embodiment, and FIG. 5 is a perspective view showing the rear surface (surface opposite to the acoustic radiation direction) of the vibrator 2. FIG. 6 is a cross-sectional view taken along the line CC of FIG. The vibrating body 2 is used for a speaker device mounted on a portable electronic device such as a mobile phone, a portable radio, or a PDA. The short diameter of the speaker device is, for example, about 2 to 4 cm.
The planar shape of the vibrating body 2 has a major axis and a minor axis, and specifically exhibits a track shape in which a rectangle (rectangle) exists between two arc shapes. The vibrating body 2 is configured, for example, by integrally forming a diaphragm 3 and an edge 4.
The diaphragm 3 includes, for example, a first vibrating portion 3a whose planar shape has a track shape and a second vibrating portion 3b whose planar shape has a hollowed track shape with a voice coil support portion 3c interposed therebetween, for example, It is formed and configured. In the vibrating body 2, the diaphragm 3 and the edge 4 may be formed by separate members. Moreover, the shape of the vibrating body 2 is not limited to the track shape, and may be formed in a rectangular shape such as a rectangle, a planar shape such as a circle or an ellipse.

Here, with the hollow track shape, the planar shape is concentric. Specifically, it refers to a shape in which both ends of two arc shapes are connected by two rectangles having the same width as the arc shape, and the first vibrating portion 3a having a track shape located at the center of the track shape is extracted. It has a different shape.
The longitudinal cross-sectional shape of the 1st vibration part 3a shown by FIG. 2 is exhibiting the dome shape which protrudes in the front surface (acoustic radiation direction) side and has a predetermined | prescribed curved diameter.
The second vibrating portion 3b connects two arc-shaped portions (first regions) 3ba and 3bb and both ends of the arc-shaped portions 3ba and 3bb with substantially the same width as the arc-shaped portions 3ba and 3bb. The two rectangular portions (second regions) 3bc and 3bd are integrally formed. The longitudinal cross-sectional shape of the 2nd vibration part 3b is exhibiting the curve shape which protruded to the front surface (acoustic radiation direction) side and has a predetermined | prescribed curved diameter.

  The voice coil support part 3c is provided between the first vibrating part 3a and the second vibrating part 3b, and is a flat part that connects the first vibrating part 3a and the second vibrating part 3b. The shape is a track ring shape. Here, the track ring shape refers to a shape in which the width is extremely narrow compared to the length of the entire circumference among the hollow track shapes. The voice coil support portion 3c has a flat surface portion (connection flat surface portion) 3ca along a direction orthogonal to the acoustic radiation direction, and the planar shape is a track ring shape on the rear surface (surface opposite to the acoustic radiation direction). The voice coil 13 (see FIG. 2) is fixed with an adhesive.

An edge 4 is formed integrally with the diaphragm 3 on the outer peripheral edge of the second vibrating portion 3b. The edge 4 has a hollow track shape in plan view. That is, the edge 4 has two arc-shaped portions (first regions) 4a and 4b and two arc-shaped portions 4a and 4b that connect both ends of the arc-shaped portions 4a and 4b with substantially the same width as the arc-shaped portions 4a and 4b. Rectangular portions (second regions) 4c and 4d are integrally formed. Moreover, the edge 4 is exhibiting the roll shape which has a predetermined | prescribed curved diameter from which the longitudinal cross-sectional shape protruded to the front side.
Moreover, the top part of the edge 4 is formed so that it may be located in the outer peripheral part side rather than the center of the inner peripheral part and outer peripheral part. By comprising in this way, the effective vibration area of the vibrating body 2 can be made comparatively large, and a sound pressure can be enlarged.

  On the outer peripheral portion of the edge 4, a folded portion 4 e that is bent toward the front surface (acoustic radiation direction) side is formed. The folded portion 4 e is sandwiched between the frame 30 and the grill frame 50 and supported by the frame 30. An abutting surface 4 f of the folded portion 4 e that abuts on a later-described step portion 38 (see FIG. 2) of the frame 30 is a connecting portion that connects the edge 4 to the frame 30. By forming the folded portion 4e, the vibrating body 2 can be easily and accurately assembled to the frame 30 when the speaker device 1 is assembled using the vibrating body 2. The folded portion 4e has a function of positioning with respect to the frame 30.

  In the vibrating body 2 shown in FIG. 2, the height of the flat surface portion 3 ca of the voice coil support portion 3 c in the acoustic radiation direction is configured to be lower than the height of the contact surface 4 f of the edge 4. However, the height is not limited to this and may be substantially the same.

The area in the planar shape of the first vibrating part 3a may be substantially equal to or smaller than the sum of the area in the planar shape of the second vibrating part 3b and the area in the planar shape of the edge 4. In this case, an external magnetic type magnetic circuit can be used as the magnetic circuit constituting the speaker device. When using an outer magnet type magnetic circuit, the outer diameter of the magnet constituting the magnetic circuit can be made larger than when using an inner magnet type magnetic circuit, so that the magnetic flux density of the magnetic field generated by the magnet is reduced. As a result, the sensitivity of the speaker device can be increased.
On the other hand, an internal magnet type magnetic circuit may be used as the magnetic circuit constituting the speaker device. In this case, the edge width (difference between the outer diameter and the inner diameter) needs to be relatively small, and the rigidity of the edge may be relatively large.

  Moreover, the longitudinal cross-sectional shape of the 1st vibration part 3a exhibits the dome shape protruded to the front surface (acoustic radiation direction) side, and the vertical cross-sectional shape of the 2nd vibration part 3b protrudes to the front surface (acoustic radiation direction) side. The edge 4 has a roll shape in which the longitudinal cross-sectional shape protrudes to the front side. That is, each of the longitudinal sectional shapes of the first vibrating portion 3a, the second vibrating portion 3b, and the edge 4 has a curved shape (curved shape) protruding toward the front surface (acoustic radiation direction). Furthermore, as shown in FIG. 6, the top of the second vibrating portion 3 b is formed lower than the top of the first vibrating portion 3 a or the top 11 of the edge 4.

  In the speaker device 1 of the present embodiment, the first vibrating portion 3a has a third vibrating portion 3d on the outer peripheral portion on the voice coil support portion 3c side. The 3rd vibration part 3d forms the outer-periphery edge part of the 1st vibration part 3a, and has the curved surface shape which curves to the acoustic radiation direction side. That is, the 3rd vibration part 3d has connected the 1st vibration part 3a and the voice coil support part 3d with the smooth curved surface.

  The second vibrating portion 3b has a fourth vibrating portion 3e on the inner peripheral portion on the voice coil support portion 3c side. The 4th vibration part 3e forms the inner peripheral part of the 2nd vibration part 3b, and has a curved-surface shape curved to the acoustic radiation direction side. That is, the 4th vibration part 3e has connected the 2nd vibration part 3b and the voice coil support part 3d with the smooth curved surface.

  Further, as shown in FIG. 7, the curved diameter at the point R3 of the third vibrating part 3d is smaller than the curved diameter at the point R1 of the first vibrating part 3a, and the curved point at the point R4 of the fourth vibrating part 3e. The diameter is configured to be smaller than the curved diameter at the point R2 of the second vibrating portion 3b. Further, the curved diameter at the point R3 of the third vibrating part 3d and the curved diameter at the point R4 of the fourth vibrating part 3e are configured to have different curved diameters.

  By the way, in a conventional speaker device as described in Japanese Patent Application Laid-Open No. 2003-348691, for example, as shown in FIG. 8, the voice coil support portion 212 has a vibration direction (acoustic sound) of the voice coil 214 from the diaphragm 210 and the edge 211. (Radiation direction) extending from the diaphragm 210 to the edge 211 and having a U-shape or an L-shape. FIG. 8 is a view showing a cross section of a vibrating body of a conventional speaker device. When such a bent shape is formed, if the voice coil and the diaphragm are vibrated, stress may act on the bent portion and breakage may occur. In addition, in the molding, the thickness at the bent portion tends to be smaller than the thickness at the other vibration portion or a part of the edge, and may break.

  In contrast to such a conventional speaker device, in the speaker device 1 of the present embodiment, as described above, the diaphragm 3 includes the first vibrating portion 3a and the second vibrating portion 3b. The first vibrating portion 3a includes a third vibrating portion 3d having a curved shape that curves toward the acoustic radiation direction side on the outer peripheral portion on the voice coil supporting portion 3c side, and the second vibrating portion 3b is a voice coil supporting portion. A fourth vibrating portion 3e having a curved shape that curves toward the acoustic radiation direction side is provided on the inner peripheral portion on the 3c side. The diaphragm 3 is formed in a curved shape from the inner peripheral end of the flat surface portion 3ca of the voice coil support portion 3c to the first vibration portion 3a and from the outer peripheral end of the flat surface portion 3ca to the second vibration portion 3b. Has been. Thereby, since the U-shaped or L-shaped bent portion is not formed in the voice coil support portion 3c, it is possible to suppress breakage of the vibrating body caused by the stress acting on the bent portion. Further, since it is not necessary to form a U-shaped or L-shaped bent portion, the thickness of the diaphragm 3 is substantially reduced from the voice coil support portion 3c to the first vibrating portion 3a and the second vibrating portion 3b. Therefore, the diaphragm 3 can be prevented from being broken.

  Moreover, in this embodiment, the 3rd vibration part 3d which has the curved surface shape which curves to the acoustic radiation direction side is formed in the outer periphery part of the 1st vibration part 3a, and the outer periphery of the 2nd vibration part 3b A fourth vibrating portion 3e having a curved shape that curves toward the acoustic radiation direction side is formed in the portion. Thereby, the effective vibration area of the diaphragm 3 can be made relatively large, and the acoustic characteristics can be improved.

  In the present embodiment, the third vibrating portion 3d and the fourth vibrating portion are configured such that the curved diameters of the third vibrating portion 3d and the fourth vibrating portion 3e are different from each other. Different resonance frequencies can be produced in 3e. That is, it is possible to adjust the lowest resonance frequency or the high-frequency limit frequency of the vibrating body 2 by setting the third vibrating portion 3d and the fourth vibrating portion 3e to different bending diameters and appropriately setting the respective bending diameters. The speaker device 1 can obtain a desired frequency characteristic.

  In the vibrating body 2 according to the present embodiment, as shown in FIGS. 1 to 6, a first reinforcing portion 7 having a substantially half-cylinder shape (a vault shape) is convex on the front surface (acoustic radiation direction) side of the voice coil support portion 3 c. A plurality of are formed. The first reinforcing portion 7 protrudes from the voice coil support portion 3c to the front surface (acoustic radiation direction) side and extends in the radial direction of the vibrating body 2, and the front side of the pair of wall portions 7a Are connected to each other and extend from the inside to the outside of the vibrating body 2, and have a semi-cylindrical shape that is convex on the front side (acoustic radiation direction) of the voice coil support portion 3 c. In the example of illustration, a pair of wall part 7a is formed in flat form, and the bridge | crosslinking part 7b is formed in the cross-sectional shape in curve shape. An inner end of the first reinforcing portion 7 is connected to the first vibrating portion 3a (third vibrating portion 3d), and the connecting portion has a predetermined cross section. The outer end of the first reinforcing portion 7 is connected to the second vibrating portion 3b (fourth vibrating portion 3e), and the connecting portion has a predetermined cross section. The predetermined cross section of the connecting portion can be appropriately changed so that the first reinforcing portion 7 has rigidity in the radial direction of the diaphragm 3. In addition, the shape of the 1st reinforcement part 7 is not limited to the example of illustration, You may have what has a circular-arc-shaped cross-sectional shape, and the shape of a bowl.

  In the illustrated vibrating body 2, the position of the inner peripheral portion of the third vibrating portion 3 d in the radial direction of the vibrating body 2 is the first reinforcing portion 7 on the third vibrating portion 3 d side in the radial direction of the vibrating body 2. It is substantially the same or inside with respect to the position of the end portion. The position of the outer peripheral portion of the fourth vibrating portion 3e in the radial direction of the vibrating body 2 is relative to the position of the end portion of the first reinforcing portion 7 on the fourth vibrating portion 3e side in the radial direction of the vibrating body 2. Substantially the same or outside.

In the vibrating body 2 in the illustrated example, the height of the inner peripheral portion of the third vibrating portion 3d is substantially the same or higher than the height of the end portion of the first reinforcing portion 7 on the first vibrating portion 3a side. .
The height of the outer periphery of the fourth vibrating part 3e is substantially the same or higher than the height of the end of the first reinforcing part 7 on the second vibrating part 3b side.

  In the speaker device 1 of the present embodiment, the first reinforcing portion 7 is provided on the vibrating body 2, whereby the rigidity of the voice coil support portion 3 c in the radial direction can be improved, and the first in the vicinity of the voice coil 13. The stress acting on a part of the vibration part 3a and the second vibration part 3b can be reduced. Thereby, it is possible to prevent breakage or the like from occurring in a part of the vibrating body 2 in the vicinity of the voice coil 13. Further, by providing the first reinforcing portion 7 in the vibrating body 2, the rigidity of the voice coil support portion 3 c in the radial direction can be improved, and thus the vibration of the voice coil 13 is suitably applied to the entire vibrating body 2. Since it can transmit, the vibrating body 2 can be vibrated with the substantially same phase.

  Further, in the speaker device 1 of the present embodiment, the first reinforcing portion 7 is provided on the flat surface portion 3ca of the voice coil support portion 3c so as to protrude in the sound emission direction, thereby rear surface of the voice coil support portion 3c (acoustic emission direction and Can be provided with a semi-cylindrical recess on the opposite surface) side, and lead wires 14a and 14b drawn from the inner or outer peripheral side of the voice coil 13 to be described later can be drawn to the outside. Further, when the lead wires 14a and 14b pass between the voice coil 13 and the voice coil support portion 3c and are connected to an external terminal portion, the joint surface between the voice coil 13 and the voice coil support portion 3c is uneven. In some cases, the vibrating body 2 may be tilted with respect to a stationary part such as the frame 30. At this time, when the speaker device is driven, the voice coil 13 may come into contact with a member constituting the magnetic circuit 20 described later, such as a magnet, or abnormal noise may be generated due to the contact. Therefore, as described above, when the lead wires 14a and 14b pass through the semi-cylindrical recess formed on the rear surface side of the voice coil support portion 3c, the voice coil 13 contacts the magnetic circuit 20 and the like. Can be suppressed.

  In the vibrating body 2 in the illustrated example, three first reinforcing portions 7 are arranged in the circumferential direction in one of the two areas partitioned by the short axis or the long axis 9 that passes through the center of the vibrating body 2. 6 first reinforcing portions 7 are formed as a whole along the vibrating body 2. The number and positions of the first reinforcing portions 7 are not limited to the illustrated example, and may be appropriately changed according to the shape of the vibrating body 2 and the vibrating body 2 can have a desired rigidity.

  As shown in FIGS. 4 to 6, a plurality of convex second reinforcing portions 8 are formed on the front surface (acoustic radiation direction) side across the edge 4 and the second vibrating portion 3 b. 4-6, the 2nd reinforcement part 8 is formed in the substantially symmetrical position with respect to the short axis or long axis 9 of the vibrating body 2. As shown in FIG. In other words, each second reinforcing portion 8 extends from the second vibrating portion 3b to the edge 4 in the substantially radial direction of the arc-shaped portions 3ba and 3bb. Moreover, a part of 2nd reinforcement part 8 is provided in arc-shaped part 3ba, 3bb, 4a, 4b.

In addition, the height of the second reinforcing portion 8 is preferably substantially equal to or smaller than the height defined between the outer peripheral portion of the second vibrating portion 3 b and the top portion of the edge 4. As shown in FIG. 9, the height of the second reinforcing portion 8 is the second height from the boundary position 8a between the second reinforcing portion 8 and the second vibrating portion 3b in the vibration direction of the voice coil 13. The total height h up to the top 8b of the reinforcing portion. The reason for setting in this way will be described below.
When the height of the second reinforcing portion 8 is relatively large, generation of split vibration (including reverse resonance) can be suppressed, and the first in the horizontal direction (direction substantially perpendicular to the vibration direction of the voice coil) can be suppressed. The movement (rolling phenomenon) of the vibration part 3a or the second vibration part 3b can be suppressed. On the other hand, when the height of the second reinforcing portion 8 is relatively large, the rigidity of the edge 4 is increased. In other words, since the edge 4 is difficult to bend in the vibration direction of the voice coil 13, the followability of the edge 4 with respect to the vibration of the first vibration part 3a and the vibration of the second vibration part 3b may be reduced. Therefore, by making the height of the second reinforcing portion 8 substantially equal to or smaller than the height defined between the outer peripheral portion of the second vibrating portion 3b and the top portion of the edge 4, the first vibrating portion 3a The followability of the edge 4 with respect to the vibration and the vibration of the second vibrating portion 3b can be made relatively large. Further, while making the height of the second reinforcing portion 8 relatively small, for example, by increasing it to about half of the height defined between the outer peripheral portion of the second vibrating portion 3b and the top portion of the edge 4, It is possible to keep the rigidity relatively large and suppress divided vibration (reverse resonance).

  Here, the reverse resonance is a sound wave propagating from the center of the diaphragm toward the edge due to the vibration of the voice coil and a sound wave returning from the edge to the center of the diaphragm between the dome-shaped diaphragm and the edge. This is a resonance phenomenon caused by. The rolling phenomenon means that the vibration system of the speaker device does not move up and down linearly in the sound radiation direction (vibration direction of the voice coil) in accordance with the electrical signal applied to the voice coil, and in the sound radiation direction. On the other hand, it means a phenomenon that vibrates in a substantially vertical direction or an oblique direction.

  The planar shape of each second reinforcing portion 8 preferably has a planar shape having a major axis and a minor axis, for example, a polygonal shape. In the example of illustration, the planar shape of each 2nd reinforcement part 8 is exhibiting the substantially rhombus shape (substantially square shape). By making the planar shape of each second reinforcing portion 8 a polygonal shape, the second reinforcing portion 8 can be bent in the radial direction or the circumferential direction of the arc-shaped portions 4a and 4b. (For example, reverse resonance, rolling phenomenon, etc.) can be suppressed.

  The cross-sectional shape of each second reinforcing portion 8 is a substantially inverted V shape in which a pair of slopes having a linear shape are in contact with each other to form the top, and a pair of slopes in a curved shape are in contact with each other. Any of a substantially inverted U shape, a substantially rectangular shape, a substantially serrated shape, or a substantially sine wave shape may be formed.

  As described above, since the second reinforcing portion 8 is formed from the second vibrating portion 3b to the edge 4, the high frequency resonance frequency associated with the divided vibration (including reverse resonance) can be out of the audible range. Thus, the acoustic characteristics of the speaker device 1 can be improved. Further, since the second reinforcing portion 8 extends along the substantially radial direction of the arc-shaped portion 4a or 4b, the rigidity at the boundary between the second vibrating portion 3b and the edge 4 increases, and the vibrating body 2 can be vibrated substantially in phase. As a result, the frequency characteristic of the speaker device 1 can be made flat.

  Further, since the second reinforcing portion 8 can be bent in the radial direction or the circumferential direction of the arc-shaped portions 4a and 4b, generation of unnecessary vibration such as split vibration (including reverse resonance) is suppressed. Can do. Further, when the vibrating body 2 vibrates, the second reinforcing portion 8 is bent, so that the edge 4 can follow the vibration of the first vibrating portion 3a and the vibration of the second vibrating portion 3b.

  Further, the second reinforcing portion 8 extends from the arc-shaped portion 3ba constituting the second vibrating portion 3b to the arc-shaped portion 4a constituting the edge 4, and the arc-shaped shape constituting the second vibrating portion 3b. A plurality (three in the illustrated example) are formed from the part 3bb to the arcuate part 4b constituting the edge 4 respectively. For this reason, since the rigidity in the vicinity of the boundary (joint portion) between the arc-shaped portion 4a and the arc-shaped portion 3ba can be relatively increased, stress (stress) is concentrated in the vicinity of the boundary when the vibrating body 2 is driven. Action can be suppressed, and the occurrence of unnecessary movement in the vibrator 2 can be suppressed.

  Moreover, since the 2nd reinforcement part 8 is formed in convex shape at the front surface (acoustic radiation direction) side, the 1st vibration part 2a and the 2nd vibration part 2b vibrate in the mutually opposite direction. Thus, it is possible to suppress the occurrence of split vibration (including reverse resonance).

  On the other hand, the arc-shaped portions 4a and 4b are formed with a plurality of third reinforcing portions 10a and 10b that are convex on the rear surface side (the side opposite to the acoustic radiation direction). Note that the cross-sectional shape of each of the third reinforcing portions 10a and 10b may be any of a substantially V shape, a substantially U shape, a substantially rectangular shape, a substantially sawtooth shape, or a substantially sine wave shape.

Moreover, the length of each 3rd reinforcement parts 10a and 10b is shorter than the width | variety of the circular arc shaped parts 4a and 4b. By providing the third reinforcing portions 10a and 10b, the minimum resonance frequency f ₀ can be adjusted to a desired magnitude. That is, if extremely long lengths of each of the third reinforcing portions 10a and 10b, it is difficult to adjust the lowest resonance frequency f _0. On the other hand, if the length of each of the third reinforcing portions 10a and 10b is shortened, it becomes difficult to bend at the arc-shaped portions 4a and 4b. Vibration is difficult to be transmitted well. In this example, the minimum resonance frequency f ₀ can be adjusted to a desired size by making the length of each of the third reinforcing portions 10a and 10b slightly shorter than the width of the arc-shaped portions 4a and 4b. It becomes.

  In the illustrated example, three third reinforcing portions 10a are formed on the arc-shaped portion 4a side with respect to the boundary portion 5a between the arc-shaped portion 4a and the rectangular portion 4c with a predetermined interval. In addition, three third reinforcing portions 10a are formed on the arc-shaped portion 4b side with respect to the boundary portion 5b between the arc-shaped portion 4a and the rectangular portion 4d with a predetermined interval. In addition, three third reinforcing portions 10a are formed at a predetermined interval on the arc-shaped portion 4b side with respect to the boundary portion 5c between the arc-shaped portion 4b and the rectangular portion 4c. Three third reinforcing portions 10a are formed in the arc-shaped portion 4b at a predetermined interval with respect to the boundary portion 5d between the arc-shaped portion 4b and the rectangular portion 4d. In the illustrated example, in the arc-shaped portion 3 a, two third reinforcing portions 10 b are formed at positions that are substantially symmetrical with respect to the long axis 9 that passes through the center position of the vibrating body 2. Further, in the arc-shaped portion 4 b, two third reinforcing portions 10 b are formed at a position that is substantially symmetric with respect to the long axis 9 that passes through the center position of the vibrating body 2. In other words, the third reinforcing portions 10a and 10b extend in the radial direction of the arc-shaped portions 4a and 4b. Each of the third reinforcing portions 10a and 10b described above is formed so as to be substantially symmetric with respect to the short axis or the long axis passing through the center position in the planar shape of the entire vibrator 2 including the edge 4. Yes.

  According to the vibrating body 2 according to the present embodiment, since the third reinforcing portions 10a and 10b are formed in a convex shape on the back side (the side opposite to the acoustic radiation direction), the rigidity of the edge 4 is relatively large. Thus, the followability of the edge 4 with respect to the vibration of the first vibrating portion 3a and the vibration of the second vibrating portion 3b can be made relatively large.

Moreover, according to the vibrating body 2 which concerns on this embodiment, since each 3rd reinforcement part 10a and 10b is extended in the radial direction of circular arc-shaped part 3a and 3b, the rigidity of the edge 4 is adjusted. That is, since the rigidity of the vibrating body 2 can be adjusted, the lowest resonance frequency f ₀ can be adjusted. Further, by forming the third reinforcing portions 10a and 10b, unnecessary movement such as vibration in the circumferential direction, which occurs in the vibrating body 2, compared to the case where the third reinforcing portions 10a and 10b are not formed. Can be deterred. For example, when the vibration in the circumferential direction propagates to the second vibrating portion 3b or the edge 4 while the vibrating body 2 is vibrating, the third reinforcing portions 10a and 10b have a smaller width in the circumferential direction. Alternatively, the occurrence of circumferential vibration can be suppressed by increasing the size, that is, by performing a stretching motion.

  Hereinafter, the reason why the third reinforcing portions 10a and 10b are not provided in the rectangular portions 3c and 3d will be described. When the third reinforcing portions 10a and 10b are also provided in the rectangular portions 3c and 3d, compared to the rigidity of the arc-shaped portions 3a and 3b (long axis direction) provided with the third reinforcing portions 10a and 10b, The rigidity of the rectangular portions 3c and 3d (short axis direction) provided with the three reinforcing portions 10a and 10b is increased. As a result, unnecessary movement such as a rolling phenomenon is likely to occur in the acoustic transducer vibrator 1. This mechanism is presumed as follows. The third reinforcing portions 10a and 10b have groove portions whose cross-sectional shapes are V-shaped, and the groove portions of the third reinforcing portions 10a and 10b surround their mouths by vibrations propagated in the circumferential direction. Open and close in the direction. When the opening of the groove portion is opened and closed, the rigidity of the arc-shaped portions 3a and 3b becomes relatively small. As a result, vibration is easily propagated in the long axis direction or amplified, and unnecessary movement such as rolling phenomenon is converted into sound. It is understood that it is likely to be generated in the dexterous vibrator 1. Therefore, the third reinforcing portions 10a and 10b are not provided in the rectangular portions 3c and 3d.

  Here, in the vibrating body 2 according to the present embodiment, each of the longitudinal sectional shapes of the first vibrating portion 3a, the second vibrating portion 3b, and the edge 4 is a substantially curved line that protrudes toward the front surface (acoustic radiation direction). It has a shape. Furthermore, the top part of the second vibrating part 3 b is formed lower than the top part of the first vibrating part 3 a or the top part of the edge 4. Further, the height of the outer peripheral portion of the second vibrating portion 3b is substantially equal to the height of the outer peripheral portion of the first vibrating portion 3a. With this configuration, the phase of the sound radiated from the second vibrating unit 3b is substantially the same as the phase of the sound radiated from the first vibrating unit 3a. In particular, the height of the top portion of the first vibrating portion 3a and the height of the top portion of the second vibrating portion 3b are substantially equal, and the height of the outer peripheral portion of the first vibrating portion 3a and the outer peripheral portion of the second vibrating portion 3b. By making the heights substantially equal, the phase difference generated between the sound radiated from each of the first vibrating portion 3a and the second vibrating portion 3b can be made relatively small.

  The diaphragm 3, the edge 4, the first reinforcing portion 7, the second reinforcing portion 8, and the third reinforcing portions 10a and 10b described above are integrally formed by, for example, press molding. Examples of the material of the diaphragm 3 and the edge 4 include paper, a woven fabric using fibers, a knitted fabric using fibers, a nonwoven fabric, and a woven fabric using fibers impregnated with a binding resin made of a silicone resin, There are metal materials, synthetic resins, acrylic foams, hybrid materials made of synthetic resins and metals, and the like. Examples of the metal material include aluminum, titanium, duralumin, beryllium, magnesium, and alloys thereof. Examples of the synthetic resin include polypropylene, polyethylene, polystyrene, polyethylene terephthalate, polyethylene naphthalate, polymethyl methacrylate, polycarbonate, polyarylate, epoxy resin, polysulfone, polyurethane having a urethane bond, rubber, and the like. The acrylic foam, which is a foamed resin, is formed using, for example, methyl methacrylate, methacrylic acid, styrene, maleic anhydride, and methacrylamide as raw materials. It can be used for the edge 4. The hybrid material is made of, for example, a synthetic resin such as polypropylene and a metal such as tungsten.

  The voice coil 13 is a rear surface of the flat surface portion 3ca where the first reinforcing portion 7b of the voice coil support portion 3c which is a connecting portion for connecting the first vibrating portion 3a and the second vibrating portion 3b is not formed (acoustic It is joined to the surface opposite to the radial direction) with a joining member such as an adhesive.

  In this embodiment, the magnetic circuit 20 shown in FIGS. 2 and 3 is configured by combining an outer magnet 21, an inner magnet 22, an outer plate 23, an inner plate 24, and a yoke 25, and uses both an inner magnet type and an outer magnet type. It is formed as a magnetic circuit. The magnetic circuit 20 is a combination of an internal magnetic type and an external magnetic type, but is not particularly limited, and may be an internal magnetic type or an external magnetic type magnetic circuit, and can be changed as appropriate. The inner magnet type magnetic circuit here refers to a magnetic circuit in which a magnet is arranged inside the voice coil. Similarly, the outer magnet type magnetic circuit is a magnet outside the voice coil. Is a magnetic circuit in which is arranged. The combined use of the inner magnet type and the outer magnet type refers to a magnetic circuit in which magnets are arranged inside and outside the voice coil.

  The planar shape of the outer plate 23 is an annular plate shape having a substantially circular outer periphery and a track shape on the inner periphery. In other words, the inner periphery of the outer plate 23 has a shape defined by the major axis and the minor axis. The outer plate 23 is made of a magnetic material such as pure iron, oxygen-free steel, or silicon steel.

  The planar shape of the inner plate 24 is a track shape that is slightly smaller than the inner periphery of the outer plate 23. The inner plate 24 is made of a magnetic material such as pure iron, oxygen-free steel, or silicon steel, for example.

  As with the outer plate 23, the outer magnet 21 has an annular plate shape whose outer periphery is circular and whose inner periphery is track-shaped. The outer diameter and inner diameter of the outer magnet 21 are formed larger than the outer plate 23, and are larger than the whole (see FIGS. 1 and 2). The outer magnet 21 is made of, for example, a permanent magnet such as neodymium-based, samarium-cobalt-based, alnico-based, or ferrite-based magnet.

  Similar to the inner plate 24, the inner magnet 22 has an annular plate shape whose outer periphery is a track shape. The outer diameter of the inner magnet 22 is smaller than that of the inner plate 24 and is smaller than the inner plate 24 as a whole. The inner magnet 22 is made of, for example, a permanent magnet such as neodymium-based, samarium-cobalt-based, alnico-based, or ferrite-based magnet.

  The yoke 25 has a circular outer periphery and is configured to substantially match the outer diameter of the outer plate 23. The yoke 25 is made of a magnetic material such as pure iron, oxygen-free steel, or silicon steel.

  In the magnetic circuit 20, the track shape of the outer periphery of the inner plate 24, the track shape of the outer periphery of the inner magnet 22, the track shape of the inner periphery of the outer plate 23, and the track shape of the inner periphery of the outer magnet 21 are short axis and long axis. Are arranged so that their centers coincide with the center of the yoke 25. With such an arrangement, the outer magnet 21 and the outer plate 23, the outer magnet 21 and the yoke 25, the inner magnet 22 and the inner plate 24, and the inner magnet 22 and the yoke 25 are joined by an adhesive or the like, respectively, so that the magnetic circuit 20 is joined. And is housed inside the frame 20. In the magnetic circuit 20 configured in this way, the planar shape of the inner plate 24 is a track shape that is slightly smaller along the inner periphery of the outer plate 23. A certain gap is formed in the gap, and this gap becomes the magnetic gap G.

  Of the magnetic pole portions constituting the magnetic gap G, the magnetic pole portion disposed outside the magnetic gap G is referred to as a first magnetic pole portion, and the magnetic pole portion disposed inside is referred to as a second magnetic pole portion. In the present embodiment, for example, the outer plate 23 constituting the magnetic gap G is the first magnetic pole part, and the inner plate 24 is the second magnetic pole part.

  As shown in FIGS. 2 and 3, in the state where the magnetic circuit 20 is accommodated in the frame 30 and the vibrating body 3 is disposed on the front surface of the frame 30, the position of the outer peripheral portion of the third vibrating portion 3 d is In the vicinity of the position of the outer peripheral portion of the inner plate 24. Further, the position of the inner peripheral portion of the fourth vibrating portion 3 e is in the vicinity of the position of the inner peripheral portion of the outer plate 23.

  As described above, the outer plate 23 (first magnetic pole part) is provided with the annular plate-like outer magnet 21 that continuously forms the circumference, so that the short axis direction of the outer plate 23 (first magnetic pole part) is provided. The magnetic flux density in the magnetic gap G can be made relatively large without generating magnetic saturation. Further, by using a magnet having a circular outer shape, the cost can be made relatively smaller than when a magnet having a rectangular outer shape is used, and the cost of the speaker device can be reduced.

  Moreover, in this embodiment, the magnetic circuit 20 which used the inner magnet type and the outer magnet type together is provided. For this reason, the magnetic flux in the magnetic gap G is larger in the major axis direction where the width of the outer magnet 21 is narrower than in the minor axis direction where the width of the outer magnet 21 is wider, as in the case of using an outer magnet type magnetic circuit. The density is never relatively small. Moreover, the magnetic flux density in the magnetic gap G in the major axis direction can be made relatively high, and the magnetic flux density in the magnetic gap G can be made substantially uniform in the circumferential direction.

  As shown in FIGS. 2 and 3, the magnetic circuit 20 is supported by a frame 30 that surrounds the periphery of the magnetic circuit 20. The frame 30 surrounds and supports the peripheral edge of the magnetic circuit 20, a support portion 33 that supports the edge 4 of the diaphragm 2, and a protrusion provided between the cylindrical portion 31 and the support portion 33. The shape is provided with a portion 32.

  The cylindrical portion 31 of the frame 30 includes a fitting portion 34 that is fitted to the outer peripheral edge of the outer magnet 21, an opening 35 that has substantially the same shape as the outer peripheral edge of the outer plate 23, and the yoke 25. And an opening 36 to which the outer peripheral edge is fixed.

  The protruding portion 32 of the frame 30 is a planar member that extends in a direction substantially perpendicular to the acoustic radiation direction on the front surface side (acoustic radiation direction side) of the cylindrical portion 31. The planar shape of the protrusion 32 is a track shape.

  The support portion 33 protrudes from the peripheral portion of the projecting portion 32 in the acoustic radiation direction and is formed so as to surround the front surface (surface in the acoustic radiation direction) of the projecting portion 32, and from the peripheral portion of the projecting portion 32. An annular stepped portion 38 that protrudes in the radial direction and is formed along the inner peripheral surface of the side surface portion 37 and that is formed lower than the side surface portion 37 is provided. The stepped portion 38 is attached with the folded portion 4 e of the edge portion 4 constituting the vibrating body 2.

With such a configuration, as shown in FIGS. 2 and 3, the magnet 26 and the plate 22 constituting the magnetic circuit 20 are fixed to the frame 30, and the vibrating body 2 is fixed to the frame 30. At this time, the voice coil 15 joined to the vibrating body 2 is inserted into the magnetic gap G. When the magnetic circuit 20 is fixed to the frame 30, the short axis and the long axis of the track shape of the magnetic circuit 20 (for example, the inner periphery of the outer plate 23) and the track shape of the frame 30 are all overlapped.

Since the outer diameter of the cylindrical portion 31 of the frame 30 and the length of the support portion 33 in the minor axis direction are substantially equal, as shown in FIGS. 2 and 3, from the outer periphery of the frame 30 in the major axis direction to the magnetic circuit 20. The distance is longer than the distance from the outer periphery of the frame 30 to the magnetic circuit 20 in the minor axis direction. Thereby, the protrusion part 32 of a flame | frame can be made comparatively long in a major axis direction. The protruding portion 32 can be provided with the speaker terminal portion 16 (see FIG. 12) and the like. Further, the protrusion 32 can be provided with a vent hole 39 communicating with the outside. For example, four arc-shaped air holes 39 along the opening 35 can be provided at the corner portion of the track, and thereby the lowest resonance frequency f ₀ can be lowered.

  10 is a perspective view of the speaker device 1 in a state where the vibrating body 2 is disposed on the front surface of the frame 30, and FIG. 11 is a perspective view of the speaker device 1 in a state where the vibrating body 2 is removed from FIG. FIG. As shown in FIGS. 10 and 11, in the speaker device 1 according to the present embodiment, the joining member accommodating portion 40 is formed on the support portion 33 of the frame 30.

  The joining member accommodating portion 40 is a groove formed from the inside in the radial direction of the support portion 33 toward the outside. The joint member accommodating portion 40 includes a pair of wall portions 42 extending in the radial direction of the frame, which is a cross section of the support portion 33, and a bottom portion 41 connecting the pair of wall portions 42, and has a concave cross-sectional shape. The bottom 41 is formed at a position lower than the stepped portion 38 of the frame 30 in the acoustic radiation direction, and forms a plane orthogonal to the acoustic radiation direction. Further, the bottom 41 is formed at the same or higher position in the acoustic radiation direction than the magnetic circuit 20. In the illustrated example, two joining member accommodating portions 40 are disposed at corner portions of the frame 30 at positions that are substantially symmetrical with respect to the long axis that passes through the center position of the vibrating body 2. As will be described in detail later, the joining member accommodating portion 40 accommodates a part of the joining member applied between the frame 30 and the protection member 50 in the internal space formed by the bottom portion 41 and the pair of wall portions 42. .

  The frame 30 described above is made of, for example, a ferrous metal, a non-ferrous metal, an alloy thereof, a synthetic resin, or the like. Examples of the iron-based metal include pure iron, oxygen-free steel, and silicon steel. Examples of the non-ferrous metal include aluminum, magnesium, and zinc. Examples of the synthetic resin include thermoplastic resins such as olefins such as polypropylene, ABS (acrylonitrile / budadiene / styrene), and polyethylene terephthalate. The frame is formed by, for example, drawing a ferrous metal, die casting a non-ferrous metal or an alloy thereof, or injection molding a synthetic resin.

  The frame 30 is also a stationary part that is disposed in a stationary state with respect to the voice coil support part 5. The stationary portion is not intended to be completely stationary. For example, the stationary portion may be stationary so that the diaphragm 2 can be supported, and vibration generated when the speaker device 1 is driven propagates. Vibrations may occur throughout the stationary part. In addition to the frame 30, the stationary portion referred to here corresponds to a part of the magnetic circuit 20, a place where the speaker device 1 is attached, and the like.

  Further, the stationary part only needs to be mechanically integrated with the magnetic circuit 20 to be described later, and the frame 30 is supported by the magnetic circuit 20, so that the stationary part becomes the stationary part. Therefore, for example, a component constituting the magnetic circuit 20 (for example, the yoke 25) or a member supported by the magnetic circuit 20 can be a stationary portion.

  As shown in FIG. 11, lead wires 14 a and 14 b are drawn from the voice coil 13. As shown in FIG. 3, the lead wire 14 a drawn out from the inner peripheral portion of the voice coil 13 is formed along the surface of the first reinforcing portion 7 on the magnetic circuit 20 side, that is, along the rear surface of the first reinforcing portion 7. 2 is pulled out to the rear surface of the vibrating part. The lead line 14 a drawn to the rear surface of the second vibrating portion is drawn from the rear surface of the second vibrating portion to the rear surface of the edge 4 along the rear surface between the second reinforcing portions 8. The lead line 14a drawn to the rear surface of the edge 4 passes through the inside of the joining member accommodating portion 40 along the rear surface of the edge 4 and is drawn to the outside. The lead wire 14 b drawn from the outer peripheral portion of the voice coil 13 is drawn from the rear surface of the second vibrating portion to the rear surface of the edge 4 along the rear surface of the second reinforcing portion 8. The lead line 14b drawn to the rear surface of the edge 4 is drawn along the rear surface of the edge 4 to the outside through the inside of the other joining member accommodating portion 40, which is different from the one where the lead line 14a is drawn.

  In this way, the lead wires 14a and 14b are passed inside the recess provided by the first reinforcing portion 7 on the rear surface side of the voice coil support portion 3c. Accordingly, it is not necessary to provide a gap between the voice coil 13 and the flat portion 3ca of the voice coil support portion 3c in order to draw out the lead wires 14a and 14b. Therefore, it is possible to draw out the lead wires 14a and 14b to the outside of the voice coil 13 while relatively increasing the bonding area between the voice coil 13 and the voice coil support portion 3c.

  When the distance between the vibrating body 2 and the protrusion 32 of the magnetic circuit 20 is relatively small, the lead wires 14a and 14b come into contact with the vibrating body 2 and the magnetic circuit 20, and the lead wires 14a and 14b are disconnected. Or abnormal noise may occur. On the other hand, in the speaker device 1 of the present embodiment, the lead wire 14a is placed along the rear surface of the first reinforcing portion 7 and / or the second reinforcing portion 8, and the lead wire 14b is connected to the first reinforcing portion 7 and / or the first reinforcing portion 7. Alternatively, by extending along the rear surface of the second reinforcing portion 8, it is possible to draw out the leader line to the outside while suppressing the occurrence of disconnection or abnormal noise. That is, the speaker device 1 can be reduced in thickness and size by pulling out the lead wires 14a and 14b as described above.

  As shown in FIG. 11, each of the lead wires 14 a and 14 b led out to the inside of the joining member housing portion 40 is provided behind the joining member housing portion 40 (a direction opposite to the acoustic radiation direction). It passes through the inside of the member 15 and is drawn out to the rear surface of the lead wire protection member 15. The lead wire protection member 15 is a member formed of a resin such as a joining member, and after the lead wires 14a and 14b are drawn from the inside of the joining member housing portion 40 to the rear surface of the frame 30, the lead wires 14a and 14b are It is formed so as to be held inside. The front surface (surface on the acoustic emission side) of the lead wire protection member 15 forms a bottom portion 41 of the joining member accommodating portion 40.

  As shown in FIG. 12, each of the lead wires 14 a and 14 b is soldered to the rear surface of the lead wire protection member 15, and a solder (attachment portion) portion 17 is formed. A speaker terminal portion 16 for electrical connection to the outside is provided on one end side in the major axis direction of the rear surface of the frame 30, and is electrically connected to the solder portion 17.

  Here, as shown in FIGS. 1 to 3, the speaker device 1 includes a grill frame (protective member) 50 provided on the acoustic radiation direction side of the frame 30. The grill frame 50 is disposed so as to cover the outer periphery of the frame 30, holds the folded portion 4 e provided on the outer periphery of the edge 4 between the frame 30 and protects the vibrating body 2 and the frame 30. Yes.

  The grill frame 50 has a hollow track shape in plan view, and a top surface portion that protrudes toward the center in the direction orthogonal to the acoustic radiation direction of the side surface portion 37 of the support portion 33 of the frame 30, that is, in the radial direction of the frame 30. 51 and an outer peripheral cylindrical portion 52 that surrounds the top surface portion 51 and extends in the opposite direction to the acoustic radiation direction and is configured to cover the outer periphery of the side surface portion 37. The side surface portion 37 included in the frame 30, the surface included in the top surface portion 51 facing the side surface portion 37, and the surface included in the outer peripheral cylindrical portion 52 are connected via a bonding member 55. That is, a part of the surface facing the side surface portion 37 among the surfaces opposite to the acoustic radiation direction in the top surface portion 51 is a connection portion 53 of the grill frame that is connected to the frame 30.

  In a state where the grill frame 50 is disposed in front of the frame 30, the outer peripheral cylindrical portion 52 of the grill frame 50 covers the outer periphery of the side surface portion 37 of the frame 30. Further, the connecting portion 53 of the grill frame 50 is in contact with the front surface (surface on the acoustic radiation direction side) of the joining member housing portion 40 on the outside of the frame 30. In a state where the grill frame 50 is disposed in front of the frame 30, a predetermined gap is formed between the connecting portion 53 and the bottom portion 41 of the joining member accommodating portion 40.

  In addition, the connecting portion 53 of the grill frame 50 is in contact with the front surface of the joining member accommodating portion 40. In addition, the inner peripheral side surface of the outer peripheral cylindrical portion 52 is in contact with the outer peripheral side surface of the frame 30 and covers the opening portion of the joining member accommodating portion 40 formed on the outer peripheral side surface of the frame 30. A gap formed between the bottom 41 of the joining member housing 40 (that is, a space formed by the joining member housing 40, the edge 4 and the frame 30) is blocked from the outside. As a result, the space between the vibrating body 4 and the frame 30 can be blocked from the outside, and the generation of abnormal noise that occurs when the space communicates with the outside and air enters and exits can be suppressed.

  The speaker device 1 is configured such that the connecting portion 53 is positioned lower than the top of the edge 4 in a state where the grill frame 50 is disposed in front of the frame 30. As a result, the provision of the grill frame 50 prevents the speaker device 1 from becoming thicker in the sound radiation direction, and thus the speaker device 1 can be made thinner.

  Here, in the speaker device 1 according to an embodiment of the present invention, in order to join the grill frame 50 to the frame 30, the joining member 55 is applied to the front surface of the side surface portion 37 of the frame 30, and the sound radiation direction of the frame 30. The grill frame 50 is arranged from the side. At this time, in the speaker device 1 according to the present invention, the joining member accommodating portion 40 is formed, and a predetermined gap is formed between the connecting portion 53 and the bottom 41 of the joining member accommodating portion 40. Even if thickly applied, a part of the joining member can be accommodated inside the joining member accommodating portion 40. Thereby, it can suppress that a joining member spread | diffuses to an edge etc., and can suppress that functions, such as an edge, reduce. Further, even if the width of the side surface portion 37 of the frame 30, that is, the width of the support portion 33 that is the connecting portion of the frame 30 is relatively narrow, the diffusion of the joining member to the edge or the like can be suppressed. Miniaturization and thinning are possible.

  Here, in the present embodiment, when the bonding member is applied along the front surface (surface on the acoustic radiation direction side) of the side surface portion 37 of the frame 30, the bonding member accommodating portion 40 is set as the application start position and the application end position. . Thereby, since the intersection of the path (henceforth an application | coating line) to apply | coat is located on the joining member accommodating part 40, even if a joining member is apply | coated thickly, a part of joining member is the joining member accommodating part 40. Therefore, it is possible to more preferably prevent the bonding member from diffusing to the edge or the like, and to prevent the function of the edge or the like from being reduced. Further, even if the width of the side surface portion 37 of the frame 30, that is, the width of the connecting portion of the frame 30 is relatively narrow, the diffusion of the joining member to the edge or the like can be more suitably suppressed, so that the speaker device can be downsized. Thinning is possible.

  In the speaker device 1 of the present embodiment, two joining member accommodating portions 40 are provided. However, the present invention is not limited to this, and one joining member accommodating portion may be provided. In this case, an outlet for drawing out one of the two leader lines to the outside of the frame may be separately provided, and one joining member accommodating portion may be used as an outlet for the two leader lines. Even in the case of providing one joining member accommodating portion, as in the case of two cases, diffusion of the joining member to the edge or the like can be suppressed, and the speaker device can be reduced in size and thickness.

  Moreover, you may provide two or more joining member accommodating parts 40, ie, two or more. By providing a plurality of joining member accommodating portions 40 and setting one of them as the application start position and the end position of the joining member, the degree of freedom in the manufacturing process can be improved. Further, by providing a plurality of joining member accommodating portions, diffusion to the edge or the like of the joining member can be more suitably suppressed.

  As described above, the speaker device 1 according to Embodiment 1 which is an embodiment of the speaker device of the present invention has been described in detail. However, the speaker device of the present invention is not limited to the above embodiment, and various modifications can be made. is there. For example, the speaker device 1 uses a dome shape, but the present invention is not limited to this, and may be a speaker device having various shapes such as a cone shape, a horn shape, and a flat plate shape. In addition, the speaker device 1 and the vibrating body 2 have a track shape as a planar shape, but the present invention is not limited to this, and may be various shapes such as a rectangular shape, a square shape, and a circular shape.

  In the first embodiment, the speaker device 1 has the grill frame 50 disposed in front of the frame 30 and the joining member is applied between the frame 30 and the grill frame 50. The present invention is not limited to the above embodiment. In the speaker device, the grill frame 50 is not an indispensable constituent member, and a joining member is applied between the frame 30 and the edge 4 of the vibrating body 2 to join the frame 30 and the vibrating body 2, and as shown in FIG. A state in which the grill frame 50 is removed from 1 may be the entire configuration of the speaker device.

  In this case, a joining member is applied to the front surface of the stepped portion 38 of the frame 30 to join the contact surface 4 f that is a connecting portion between the stepped portion 38 and the edge 4. Also in this case, similarly, the joining member accommodating portion 40 is formed, and a predetermined gap is formed between the contact surface 4f and the bottom 41 of the joining member accommodating portion 40, so that the joining member is applied thickly. Even so, a part of the joining member can be accommodated inside the joining member accommodating portion 40. Thereby, it can suppress that a part of joining member diffuses to an edge etc., and can suppress that functions, such as an edge, reduce. Further, even if the width of the side surface portion 37 of the frame 30, that is, the width of the support portion 33 that is the connecting portion of the frame 30 is relatively narrow, the diffusion of the joining member to the edge or the like can be suppressed. Miniaturization and thinning are possible.

Embodiment 2. FIG.
FIG. 13 is a top view showing a schematic configuration of a frame of the speaker device according to Embodiment 2 of the present invention. Since the speaker device of the present embodiment has basically the same configuration as the speaker device 1 of the above-described first embodiment except that the shape of the bonding member housing portion is different, the same reference numerals are used for the same members. The detailed description is omitted. Hereinafter, differences from the speaker device 1 according to the first embodiment will be mainly described.

  The frame 60 of the speaker device of the present embodiment has basically the same shape except for the shape of the frame 30 of the speaker device 1 of the first embodiment and the shape of the joint member accommodating portion. The frame 60 includes a cylindrical portion cylindrical portion 31 that surrounds and supports the periphery of the magnetic circuit 20, a support portion 33 that supports the edge of the diaphragm, the cylindrical portion cylindrical portion 31, and the support portion. And a protrusion 32 provided between the first and second members 33. Four vents 39 are provided in the protruding portion 32. The support part 33 includes a side part 37 and a step part 38.

  Here, in the speaker device according to the present embodiment, the bonding member accommodating portion 61 is provided so as to protrude from the side surface portion 37 of the frame 60 toward the outer side in the radial direction of the frame 60, which is a direction substantially orthogonal to the acoustic radiation direction. It has been. The bottom portion 61 a that is the front surface (surface on the acoustic radiation direction side) of the bonding member housing portion 61 extends to a position lower in the acoustic radiation direction than the front surface of the side surface portion 37. In the present embodiment as well, the grill frame has a shape that covers the outer periphery of the frame 60. In the speaker device of the present embodiment, a predetermined gap is formed between the connecting portion of the grill frame and the bottom portion 61 a of the joining member accommodating portion 61 with the grill frame disposed in front of the frame 60.

  In the speaker device of the present embodiment, a joining member is applied to the front surface of the side surface portion 37 of the frame 60 in order to join the grill frame to the frame 60, and the grill frame is disposed from the acoustic radiation direction side of the frame 60. At this time, also in the speaker device of the present embodiment, the joining member accommodating portion 61 is formed, and a predetermined gap is formed between the connecting portion of the grill frame and the bottom portion 61a of the joining member accommodating portion 61. Even if the member is thickly applied, a part of the joining member can be accommodated in the gap formed on the front surface of the bottom 61a of the joining member accommodation portion 61. Thereby, it can suppress that a joining member spread | diffuses to an edge etc., and can suppress that functions, such as an edge, reduce. Further, even if the width of the side surface portion 37 of the frame 60, that is, the width of the support portion 33 that is the connecting portion of the frame 60 is relatively narrow, the diffusion of the joining member to the edge or the like can be suppressed. Miniaturization and thinning are possible.

  Moreover, in this embodiment, when apply | coating a joining member along the front surface (surface by the side of an acoustic radiation direction) of the side part 37 of the flame | frame 60, the joining member accommodating part 61 is made into the application start position and the application end position. Thereby, since the intersection of the application line is located on the bottom 61a of the joining member accommodating portion 60, even if the joining member is applied thickly, a part of the joining member is accommodated inside the joining member accommodating portion 60. Further, the diffusion of the joining member to the edge or the like can be more preferably suppressed, and the function of the edge or the like can be suppressed from being reduced. Further, even if the width of the side surface portion 37 of the frame 30, that is, the width of the connecting portion of the frame 30 is relatively narrow, the diffusion of the joining member to the edge or the like can be more suitably suppressed, so that the speaker device can be downsized. Thinning is possible. Furthermore, by positioning the intersection of the coating line on the bottom 61a protruding outward from the side surface portion 37, the intersection of the coating line can be moved away from the edge 4 or the like, so that the diffusion of the joining member to the edge or the like can be further increased. It can suppress suitably.

Embodiment 3 FIG.
FIG. 14 is a diagram showing a schematic configuration of the front surface of the vibrating body of the speaker device according to Embodiment 3 of the present invention. The speaker device of the present embodiment has basically the same configuration as the speaker device 1 of the above-described first embodiment except that the bonding member housing portion is formed on the vibrating body. The same reference numerals are assigned and detailed description thereof is omitted. Hereinafter, differences from the speaker device 1 according to the first embodiment will be mainly described.

  The vibrating body 64 of the speaker device according to the present embodiment has basically the same shape as that of the vibrating body 2 of the speaker device 1 according to the first embodiment, except that the joining member accommodating portion 65 is formed. The joining member accommodating portion 65 is provided in a folded portion 4 e that is an outer peripheral portion of the vibrating body 64 so as to protrude outward in the radial direction of the vibrating body 64. The front surface 65a of the joining member accommodating portion 65 extends on the same plane as the front surface (surface on the acoustic radiation direction side) of the folded portion 4e. In the present embodiment, the planar shape of the grill frame has a shape that covers the outer periphery of the vibrating body 64.

  In the speaker device of the present embodiment, with the vibrating body 64 disposed in front of the frame 30, the joining member is applied to the front surface of the folded portion 4e of the vibrating body 64, and the grill frame is disposed from the acoustic radiation direction side of the frame 30. To do. At this time, in the speaker device of the present embodiment, since the joining member accommodating portion 65 is formed, a part of the joining member is diffused to the front surface 65a of the joining member accommodating portion 65 even if the joining member is applied thickly. Can do. Thereby, it can suppress that a joining member spread | diffuses to an edge etc., and can suppress that functions, such as an edge, reduce. Further, even if the width of the front surface of the folded portion 4e of the vibrating body 64, that is, the width of the surface to which the bonding member is applied is relatively narrow, the diffusion of the bonding member to the edge or the like can be suppressed. Can be made thinner and thinner.

  Moreover, in this embodiment, when apply | coating a joining member to the front surface of the folding | returning part 4e of the vibrating body 64, the joining member accommodating part 65 is made into the application start position and the application end position. As a result, since the intersection of the application lines is located on the front surface 65a of the joining member accommodating portion 65, even if the joining member is applied thickly, a part of the joining member is diffused to the front surface 65a of the joining member accommodating portion 65. Therefore, it can suppress more suitably that a joining member diffuses to an edge etc., and it can control that functions, such as an edge, reduce. Further, even if the width of the front surface of the folded portion 4e of the vibrating body 64, that is, the width of the surface to which the bonding member is applied is relatively narrow, the diffusion of the bonding member to the edge or the like can be more preferably suppressed. The device can be made smaller and thinner. Furthermore, the intersection of the coating lines can be moved away from the edge 4 or the like by positioning the intersection of the coating lines on the front surface 65a of the joining member accommodating portion 65 protruding outward from the outer peripheral portion of the vibrating body 64. It is possible to more suitably suppress the diffusion of the joining member to the like.

Embodiment 4 FIG.
FIG. 15 is a diagram showing a schematic configuration of the rear surface of the grill frame 70 of the speaker device according to Embodiment 4 of the present invention. Since the speaker device of the present embodiment has basically the same configuration as the speaker device 1 of the above-described first embodiment except that the shape of the bonding member housing portion is different, the same reference numerals are used for the same members. The detailed description is omitted. Hereinafter, differences from the speaker device 1 according to the first embodiment will be mainly described.

  The grill frame 70 of the speaker device of the present embodiment has basically the same shape as the frame 30 of the speaker device 1 of the first embodiment, except that the joining member accommodating portion 71 is formed. The grill frame 70 includes a top surface portion 51 that protrudes toward the center in the radial direction, and an outer peripheral cylindrical portion 52 that extends around the top surface portion 51. The top surface portion 51 has a connecting portion 53 that is connected to the frame 30. The joining member accommodating portion 71 is provided on the outer peripheral portion of the top surface portion 51 so as to protrude outward in the extending direction of the top surface portion 51 of the grill frame 70. The rear surface 71a of the joining member accommodating portion 71 extends on the same plane as the rear surface (surface on the acoustic radiation direction side) of the top surface portion 51 and the connecting portion 53. In the present embodiment, the outer peripheral cylindrical portion 52 is configured to surround the top surface portion 51 and the rear surface 71a of the joining member accommodating portion 71.

  In the speaker device of the present embodiment, the joining member is applied to the connecting portion 53 of the grill frame 70 with the vibrating body 2 disposed in front of the frame 30, and the grill frame 70 is disposed from the acoustic radiation direction side of the frame 30. To do. At this time, in the speaker device of the present embodiment, since the joining member accommodation 71 is formed, a part of the joining member can be diffused to the rear surface 71a of the joining member accommodation 71 even if the joining member is applied thickly. . Thereby, it can suppress that an excess joining member spread | diffuses to an edge etc., and can suppress that functions, such as an edge, reduce. Further, even if the width of the connecting portion 53 of the grill frame 70, that is, the width of the surface to which the joining member is applied is relatively narrow, the diffusion of the joining member to the edge or the like can be suppressed. Thinning is possible.

  In the present embodiment, when the joining member is applied to the connecting portion 53 of the grill frame 70, the joining member accommodating portion 71 is set as the application start position and the application end position. As a result, since the intersection of the application lines is located on the rear surface 71a of the joining member accommodating portion 71, a part of the joining member is diffused to the rear surface 71a of the joining member accommodating portion 71 even if the joining member is applied thickly. Therefore, it can suppress more suitably that a joining member diffuses to an edge etc., and it can control that functions, such as an edge, reduce. Further, even if the width of the connecting portion 53 of the grill frame 70, that is, the width of the surface to which the joining member is applied is relatively narrow, the diffusion of the joining member to the edge or the like can be more suitably suppressed, so that the speaker device Miniaturization and thinning are possible. Further, by positioning the intersection of the coating lines on the rear surface 71a of the joint member housing 71 protruding outward, the intersection of the coating lines can be moved away from the edge 4 and the like, so that the joint member is diffused to the edges and the like. It can suppress more suitably.

Embodiment 5 FIG.
FIG. 16 is a diagram showing a schematic configuration of the front surface of the grill frame 74 of the speaker device according to Embodiment 5 of the present invention, and FIG. 17 shows the grill frame 74 of the speaker device according to Embodiment 5 of the present invention. It is a figure which shows schematic structure of a rear surface, and FIG. 18 is DD sectional drawing of FIG. The speaker device according to the present embodiment is basically the same as the speaker device 1 according to the first embodiment described above except that the planar shape is a rectangular shape and the joining member accommodating portion is formed on the grill frame. Since it has the same structure, the same code | symbol is attached | subjected about the same member and the detailed description is abbreviate | omitted. Hereinafter, differences from the speaker device 1 according to the first embodiment will be mainly described.

  The grill frame 74 of the speaker device of the present embodiment has a substantially rectangular planar shape, protrudes toward the center in the radial direction, and has a tubular plate-like member whose outer peripheral portion and inner peripheral portion have a substantially rectangular planar shape. And an outer peripheral cylindrical portion 77 that surrounds the outer peripheral portion from the rear surface of the top surface portion 51 and extends to the opposite side to the acoustic radiation direction. The top surface portion 76 has a connecting portion 78 connected to the frame on the outer peripheral portion of the rear surface. The joining member accommodating portion 75 is a groove provided in the acoustic radiation direction in the corner portion on the rear surface of the top surface portion 76. Although not shown, in the present embodiment, the planar shape of the frame is a substantially rectangular shape similar to that of the grill frame 74. That is, the speaker device of the present embodiment is configured such that when the grill frame 74 is disposed from the front surface of the frame, the outer peripheral cylindrical portion 77 of the grill frame covers the outer peripheral portion of the frame. In the present embodiment, when the grill frame 74 is arranged on the front surface of the frame, the front surface of the side surface portion of the grill frame and the connecting portion 78 of the grill frame 74 abut, and the front surface of the side surface portion of the grill frame and the joining member accommodating portion. A predetermined gap is formed between the upper surface portion 75 a of 75.

  In the speaker device of the present embodiment, the joining member is applied to the connecting portion 78 of the grill frame 74 in a state where the vibrating body is arranged in front of the frame, and the grill frame 74 is arranged from the acoustic radiation direction side of the frame. At this time, in the speaker device of the present embodiment, the joining member accommodating portion 70 is formed, and a predetermined gap is formed between the front surface of the side surface portion of the grill frame and the upper surface portion 75a of the joining member accommodating portion 75. Even if the joining member is applied thickly, a part of the joining member can be accommodated inside the joining member accommodating portion 75. Thereby, it can suppress that a joining member spread | diffuses to an edge etc., and can suppress that functions, such as an edge, reduce. Further, even if the width of the connecting portion 78 of the grill frame 74, that is, the width of the surface to which the joining member is applied is relatively narrow, the diffusion of the joining member to the edge or the like can be suppressed. Thinning is possible.

  In the present embodiment, when the joining member is applied to the connecting portion 78 of the grill frame 74, the joining member accommodating portion 75 is set as the application start position and the application end position. Thereby, since the intersection of the application line is located in the joining member accommodating portion 75, even if the joining member is applied thickly, a part of the joining member is accommodated in the inside of the joining member accommodating portion 75. It is possible to more suitably suppress diffusion to the edge and the like, and it is possible to suppress the function of the edge and the like from being reduced. Further, even if the width of the connecting portion 53 of the grill frame 70, that is, the width of the surface to which the joining member is applied is relatively narrow, the diffusion of the joining member to the edge or the like can be more preferably suppressed. Miniaturization and thinning are possible.

  In addition, although the planar shape of the speaker device of the present embodiment has been described as a substantially rectangular shape, the shape is not limited thereto, and may be various shapes such as a track shape, a circular shape, and a square shape.

Embodiment 6 FIG.
19 is a diagram showing a schematic configuration of the front surface of the speaker device 80 according to Embodiment 6 of the present invention, FIG. 20 is a cross-sectional view taken along line EE of FIG. 19, and FIG. 21 is shown in FIG. 4 is an enlarged cross-sectional view of the vicinity of the grill frame and the outer periphery of the frame in the cross section of the speaker device 80. FIG. Since the speaker device 80 of the present embodiment has basically the same configuration as the speaker device 1 of the above-described first embodiment except for the shape of the frame and the grill frame, the same reference numerals are assigned to the same members. Detailed description thereof will be omitted. Hereinafter, differences from the speaker device 1 according to the first embodiment will be mainly described.

  The speaker device 80 is configured such that the vibrating body 2 and the magnetic circuit 20 are housed inside a frame 81 and a grill frame (protective member) 88 provided in front of the frame (on the side of the sound radiation direction). The frame 81 has a track shape as a planar shape, surrounds and supports the peripheral edge of the magnetic circuit 20, a support portion 82 that supports the edge 4 of the diaphragm 2 and the grill frame 88, and the cylindrical portion 31. And a protrusion 32 provided between the support portion 33 and the support portion 33.

  The support portion 82 protrudes in the acoustic radiation direction from the peripheral portion of the protrusion portion 32 and surrounds the front surface (surface in the acoustic emission direction) of the protrusion portion 32, and the support portion 82 generates sound from the peripheral portion of the protrusion portion 32. An annular first step portion 84 that protrudes in the radial direction and is formed along the inner peripheral surface of the side surface portion 83, and has a lower height than the side surface portion 83, and an acoustic radiation direction from the peripheral edge of the protrusion portion 32. And an annular second step portion 85 that is formed along the inner peripheral surface of the first step portion 84 and has a height lower than that of the first step portion 84. The first step 84 is fitted and connected to a connecting portion of a grill frame 88 described later. The second step portion 85 is attached with the folded portion 4 e of the edge portion 4 constituting the vibrating body 2.

  The corner portion of the frame 81 includes a protruding portion 86 having a substantially triangular planar shape. The protruding portion 86 protrudes from the outer peripheral portion of the first step portion 84, and its front surface extends on the same plane as the first step portion 84. The protruding portion 86 has substantially the same outer shape as a joining member accommodating portion 92 formed on a grill frame 88 described later, and the joining member accommodating portion 92 is accommodated therein. The side surface portion 83 is formed so as to cover the outer periphery of the first step portion 84 and the protruding portion 86.

  The grille frame 88 has a hollow track shape in plan view. The grill frame 88 protrudes inward in a direction substantially orthogonal to the direction in which the side surface portion 83 of the frame 81 extends, that is, along the radial direction of the frame 81, and its outer peripheral portion is the inner periphery of the side surface portion 83. The top surface part 89 formed in the shape along the side surface is provided. The top surface portion 89 includes an inner side surface along the edge 4. The top surface portion 89 has a flat plate-like portion 106 that extends outward from the inner peripheral portion thereof, and a part of a bonding member application surface that will be described later that extends from the flat plate-like portion 106 toward the side surface portion 83 of the frame 81. A projecting portion 107 having a flat plate-like portion 106 and a cylindrical portion 90 extending from the lower surface (the surface on the frame 81 side) of the projecting portion 107 toward the first stepped portion of the frame 81. The protruding portion 107 has an outer peripheral portion in contact with the side surface portion 83 of the frame 81, and the cylindrical portion 90 has a lower end portion in contact with the second step portion 85 of the frame 81 through the outer peripheral portion of the edge 4. Yes. Further, it is formed in an inclined shape along the edge 4 from the flat plate portion 106 to the protruding portion 107 or the cylindrical portion 90. A joining member application surface 91 is formed which includes the upper surface of the flat plate-like portion 106 and the protruding portion 107 of the top surface portion 89 and the inner peripheral side surface of the side surface portion 83 of the frame 81. The bottom surface of the bonding member application surface 91 is an outer peripheral edge portion of the top surface portion 89 and is a hollow track-shaped surface formed at a position lower in the sound radiation direction than the inner peripheral end portion of the top surface portion 89. The outer peripheral side surface of the flat plate-like portion 106 constituting a part of the bonding member application surface is formed in an inclined shape. Further, the corner portion of the top surface portion 89 is provided with a joining member accommodating portion 92 that is formed continuously with respect to the joining member application surface 91 and protrudes from the outer peripheral edge portion thereof. The front surface of the joining member accommodating portion 92 extends in the same plane as the joining member application surface 91, and in the illustrated example, the planar shape is substantially triangular. The joining member accommodating portion 92 forms a predetermined gap between the inner peripheral surface of the support portion 82 and the outer peripheral portion of the top surface portion 89 of the grill frame 88.

  As shown in FIGS. 20 and 21, the frame 81 is in contact with the contact surface 4 f of the edge 4 on the front surface of the second step portion 85, and the edge 4 is folded back together with the rear surface of the cylindrical portion 90 of the grill frame 88. The portion 4e is held. The frame 81 is in contact with and supported by the grill frame 88 on the inner peripheral surface of the side surface portion 83 and the front surface of the first stepped portion 84. That is, the inner peripheral surface of the side surface portion 83 of the frame 81, the front surface of the first step portion 84, and the front surface of the second step portion 85 sandwich the edge 4 together with the grill frame 88 and are connected to the grill frame 88. It is a connecting part.

  The grill frame 88 is in contact with the folded portion 4e of the edge 4 at the rear surface and the outer peripheral surface of the cylindrical portion 90, and the first stepped portion 84 of the frame 81 on the rear surface on the outer peripheral side of the cylindrical portion 90 of the top surface portion 89. Contact the front. That is, in the speaker device 80 of the present embodiment, the folded portion 4e of the edge 4 is sandwiched between the first step portion 84 of the frame 82 and the rear surface of the cylindrical portion 90 of the grill frame 88. The rear surface of the cylindrical portion 90 and the rear surface on the outer peripheral side of the cylindrical portion 90 of the top surface portion 89 are connecting portions that sandwich the edge 4 together with the frame 81 and are connected to the frame 81.

  In the speaker device according to the present embodiment, the vibration member 2 is disposed in front of the frame 81, and the bonding member 55 is bonded to the bonding member 55 in a state where the grill frame 88 is disposed along the inner peripheral surface of the frame 82. Applying to the application surface 91, the frame 81 and the grill frame 88 are joined. As described above, in the speaker device according to the present embodiment, the joining member is applied to the joining member application surface 91 formed on the front surface side of the grill frame 88, and between the frame and the edge or between the edge and the grill frame. Since the joining member is not applied, the joining member can be preferably prevented from diffusing to the edge or the like, and the function of the edge or the like can be prevented from being reduced.

  Further, in the speaker device of the present embodiment, the joining member accommodating portion 92 that is continuously formed on the joining member application surface 91 is formed, and the inner peripheral surface of the support portion 82 and the outer periphery of the top surface portion 89 of the grill frame 88. A relatively large gap corresponding to the bonding member accommodating portion 92 is formed between the two portions. Thereby, even if the joining member is applied thickly, the joining member can be preferably prevented from diffusing from the joining member application surface 91, and the joining member can be suitably prevented from diffusing to the edge or the like. it can. Moreover, even if the width of the bonding member application surface 91 is relatively narrow, the diffusion of the bonding member can be suitably suppressed, so that the speaker device can be reduced in size and thickness.

  In this embodiment, the bonding member application surface is provided on the grill frame, but the present invention is not limited to this, and the bonding member application surface is provided along the inner peripheral edge of the side surface of the frame, and You may comprise so that a joining member accommodating part may be provided in a part of side part of a flame | frame.

Embodiment 7 FIG.
The speaker device according to the first to sixth embodiments may be mounted on a portable electronic device (display device) such as a mobile phone, a portable radio, or a PDA, or a device preferable for a small and thin speaker device such as a thin display. it can. FIG. 22 is a front view showing a schematic configuration of a mobile phone according to Embodiment 7 including speaker device 1 according to Embodiment 1. FIG. The present embodiment is an embodiment of an electronic apparatus including the speaker device according to the present invention.

  As shown in FIG. 22, the mobile phone 100 is provided on the back side of the case 101 with a plurality of operation buttons 102, the display unit 103, the earpiece 104 and the mouthpiece 105 provided on the front side of the case 101. The receiving unit 106 having a function of sounding an alarm sound and a transmission / reception antenna 107 provided on one side surface of the case 101 are configured. Here, the speaker device 1 is provided in a position corresponding to the positions of the earpiece 104 and the incoming unit 106 in the case 101.

Embodiment 8 FIG.
The speaker device according to Embodiments 1 to 6 can also be mounted on an automobile. FIG. 23 is a cross-sectional view showing a configuration of an automobile door according to Embodiment 8 including speaker device 1 according to the present invention. This embodiment is an embodiment of an automobile including the speaker device according to the present invention.

  As shown in FIG. 23, a baffle plate 111 is attached to the surface of a door 110 that is a member to be attached, and the speaker device 1 is attached via the baffle plate 111.

  As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and the design can be changed without departing from the scope of the present invention. Is included in the present invention. In addition, each of the above-described embodiments can divert each other's technology as long as there is no particular contradiction or problem in its purpose and configuration.

DESCRIPTION OF SYMBOLS 1 Speaker apparatus 2 Acoustic transducer vibrator 3 Diaphragm 3a 1st vibration part 3b 2nd vibration part 3ba Arc-shaped part 3bb Arc-shaped part 3bc Rectangular part 3bd Rectangular part 3c Voice coil support part 3ca Plane part 3d 1st 3 vibration part 3e 4th vibration part 4 Edge 4a, b Arc-shaped part 4c, d Rectangular part 4e Folding part 4f Contact surface 5a-d Boundary part 6a-d Boundary part 7 1st reinforcement part 7a Wall part 7b Bridge portion 8 Second reinforcing portion 9 Long axis 10a, b Third reinforcing portion 11 Top portion 13 Voice coil 14a, b Lead wire 15 Lead wire protection member 16 Terminal portion 17 Solder portion 20 Magnetic circuit 21 Outer magnet 22 Inner magnet 23 Outer plate 24 Inner plate 25 Yoke 30 Frame 31 Cylindrical part 32 Projection part 33 Support part 34 Fitting part 35, 36 Opening part 37 Side face part 38 Step part 39 Vent hole 40 Joining member accommodating part 41 Bottom part 4 2 Side wall part 50 Grill frame 51 Top surface part 52 Outer peripheral cylinder part 53 Connection part 55 Joining member

Claims (40)

Comprising a vibrating body, a magnetic circuit, a stationary part that supports the vibrating body and the magnetic circuit, and a protective member provided on the stationary part,
The vibrator has a diaphragm and an edge that supports the diaphragm on the stationary part,
The stationary part includes a support part that supports the edge and the protection member,
The support part of the stationary part and the edge or the protection member are joined by a joining member. The joining part is accommodated in one of the support part of the stationary part or the protection member, and the support part The speaker device is characterized in that a joining member accommodating portion that forms a specified gap between the edge and the protective member is formed. Comprising a vibrating body, a magnetic circuit, and a stationary part that supports the vibrating body and the magnetic circuit,
The vibrator has a diaphragm and an edge that supports the diaphragm on the stationary part,
The stationary part includes a support part for supporting the edge,
The support part and the edge of the stationary part are joined by a joining member,
One of the support part and the edge of the stationary part is formed with a joining member accommodating part that accommodates the joining member and forms a specified gap between the supporting part and the edge. A speaker device. The joint member accommodating portion includes a bottom portion and a wall portion extending from the bottom portion toward the protection member, with a cross-sectional shape being formed in a concave shape.
The bottom of the joint member accommodating portion is provided at a low position with respect to the surface of the support portion of the stationary portion with which the edge or the protective member abuts.
The speaker device according to claim 1, wherein the joining member accommodating portion is formed along a radial direction of the stationary portion. The joining member accommodating portion is formed on a support portion of the stationary portion,
The joining member accommodating portion has a concave cross-sectional shape, a bottom portion, a wall portion extending from the bottom portion toward the protection member, and an inner circumference of the stationary portion along a radial direction of the stationary portion. Formed from the side surface to the outer peripheral side surface, and having an opening portion that opens to the outer peripheral side surface of the stationary portion,
2. The speaker device according to claim 1, wherein a bottom portion of the joining member housing portion is provided at a low position with respect to a surface of a support portion of the stationary portion with which the edge or the protection member abuts. The support part of the stationary part includes a side part extending toward the sound radiation direction, and a step part extending from the inner peripheral side surface of the side part toward the inside of the stationary part,
5. The speaker device according to claim 4, wherein an outer peripheral portion of the edge abuts on the step portion, and a bottom portion of the bonding member housing portion is provided at a lower position than the step portion.   The speaker device according to claim 5, wherein a bottom portion of the bonding member housing portion is provided at a high position with respect to the magnetic circuit.   The speaker device according to claim 6, wherein a part of the joint member housing portion that protrudes outward from the outer peripheral side surface of the stationary portion is formed along the outer peripheral side surface of the stationary portion. The protective member includes a top surface portion extending toward the inside of the stationary portion, and an outer peripheral cylindrical portion extending from the outer peripheral portion of the top surface portion toward the magnetic circuit,
A lower end portion of the outer peripheral cylindrical portion of the protective member is in contact with a bottom portion of a part of the joining member accommodating portion;
The speaker device according to claim 7, wherein an outer peripheral cylindrical portion of the protection member is in contact with an outer peripheral side surface of the stationary portion.   The speaker device according to claim 8, wherein the opening portion formed in the stationary portion by the bonding member housing portion is closed by an outer peripheral cylindrical portion of the protection member. The joining member is applied to the stationary part or the protective member along the support part of the stationary part,
The speaker device according to claim 9, wherein an intersection formed on a path defined by an application start position and an application end position of the joining member is formed inside the joining member housing portion.   The speaker device according to claim 10, wherein a thickness of the bonding member in the bonding member housing portion is larger than a thickness of the bonding member in a support portion of the stationary portion.   The speaker device according to claim 9, comprising a plurality of the joining member accommodating portions. The top surface portion of the protection member includes a connecting portion that is connected to a side surface portion of the stationary portion,
The speaker device according to claim 12, wherein a connecting portion of the top surface portion is lower than a top portion of the edge.   The lower surface of the top surface portion of the protective member facing the stationary portion is formed lower than the top portion of the edge while being formed continuously with the connecting portion of the top surface portion. Item 14. The speaker device according to Item 13. The vibrating body includes a voice coil supported by the diaphragm,
A lead wire drawn out from the voice coil passes through a space formed between the diaphragm and the magnetic circuit and the inside of the joint member accommodating portion, and is connected to a terminal portion supported by the stationary portion. The speaker device according to claim 14. The bonding member housing portion is filled with a resin containing the bonding member,
The speaker device according to claim 15, wherein the lead wire passes through the resin. The diaphragm includes a first vibrating part, a second vibrating part that surrounds the first vibrating part, and a connecting plane part that connects the first vibrating part and the second vibrating part. ,
The first vibrating part and the second vibrating part are formed in a curved shape from the inner periphery to the outer periphery,
The speaker device according to claim 16, wherein the voice plane is connected to the connection plane portion. Between the first vibration part and the connecting plane part, a third vibration part having a curved diameter different from that of the first vibration part is provided,
Between the second vibrating part and the connecting plane part, a fourth vibrating part having a curved diameter different from that of the second vibrating part is provided,
The speaker device according to claim 17, wherein the third vibrating portion and the fourth vibrating portion have different bending diameters. The connecting plane portion includes a first reinforcing portion extending along a radial direction of the diaphragm,
The speaker device according to claim 18, wherein the first reinforcing portion has an end connected to the first vibrating portion and an end connected to the second vibrating portion having a predetermined cross section. .   The speaker device according to claim 19, wherein the first reinforcing portion is provided so as to protrude toward the acoustic radiation side.   The speaker device according to claim 20, wherein a cross-sectional shape of the first reinforcing portion is a semi-cylindrical shape. The inner peripheral part of the third vibrating part is substantially the same or inside with respect to the end part of the first reinforcing part on the side,
The speaker device according to claim 21, wherein an outer peripheral portion of the fourth vibrating portion is substantially the same as or outside of an end portion of the first reinforcing portion on the second vibrating portion side. The height of the inner peripheral part of the third vibrating part is substantially the same or higher than the height of the end of the first reinforcing part on the first vibrating part side,
The height of the outer peripheral portion of the fourth vibrating portion is substantially the same as or higher than the height of the end portion of the first reinforcing portion on the second vibrating portion side. The speaker device described.   The speaker device according to claim 23, wherein the first reinforcing portion includes at least two wall portions extending in an acoustic radiation direction and a bridging portion provided between the wall portions. The wall is formed in a flat plate shape,
The speaker device according to claim 24, wherein the bridging portion has a curved cross-sectional shape. A second reinforcing portion is formed along the radial direction from the second vibrating portion to the edge, and a third reinforcing portion is formed along the radial direction at the edge;
The second reinforcing portion is formed in a convex shape on the acoustic radiation direction side,
26. The speaker device according to claim 25, wherein the third reinforcing portion is formed in a convex shape on a side opposite to the acoustic radiation direction.   The said 2nd reinforcement part and a said 3rd reinforcement part are provided with the at least 2 wall part extended in an acoustic radiation direction, and the bridge | crosslinking part provided between this wall part, It is characterized by the above-mentioned. The speaker device according to 1.   28. The speaker device according to claim 27, wherein a plurality of the first reinforcing portion, the second reinforcing portion, and the third reinforcing portion are provided.   29. The speaker device according to claim 28, wherein a height of the connecting plane portion and a height of an outer peripheral portion of the edge in an acoustic radiation direction are substantially the same.   30. The connection plane portion includes a recess formed by the first reinforcing portion, and the lead wire passes through the inside of the recess and is connected to the terminal portion. The speaker device described.   31. The speaker device according to claim 30, wherein the lead wire is routed along a surface facing the magnetic circuit of the first reinforcing portion or the second reinforcing portion.   The said magnetic circuit is provided with the magnet and plate which are arrange | positioned inside the said voice coil, The outer peripheral part of the said 3rd vibration part is arrange | positioned in the outer peripheral part vicinity of the said plate, It is characterized by the above-mentioned. 31. The speaker device according to 31. The magnetic circuit includes a plurality of plates and a plurality of magnets arranged inside and outside the voice coil, and a yoke magnetically coupled to the magnets,
The outer peripheral part of the third vibrating part is arranged in the vicinity of the outer peripheral part of the plate arranged inside the voice coil,
The speaker device according to claim 32, wherein an inner peripheral portion of the fourth vibrating portion is disposed in the vicinity of an inner peripheral portion of the plate that is disposed outside the voice coil.   The speaker device according to claim 1, wherein the stationary portion is a frame or a yoke included in the magnetic circuit.   The speaker device according to claim 1, wherein a bonding member housing portion is formed on an outer peripheral portion of the protection member with which the edge abuts.   The speaker device according to claim 2, wherein a joining member accommodating portion is formed on an outer peripheral portion of the edge with which the support portion of the stationary portion abuts. The joint member accommodating portion is formed with a concave cross-sectional shape, and includes a bottom portion and a wall portion extending from the bottom portion toward the magnetic circuit,
The bottom part of the joining member accommodating part is provided at a high position with respect to the support part of the stationary part,
37. The speaker device according to claim 35 or 36, wherein the joining member housing portion is formed along a radial direction of the edge or the protection member.   2. The speaker device according to claim 1, wherein a bonding member housing portion is formed on a surface of an outer peripheral portion of the protection member that is formed on the opposite side to the side facing the stationary portion.   An electronic device comprising the speaker device according to claim 1.   An automobile comprising the speaker device according to claim 1.

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