JPH10271584A - Speaker box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small sized speaker box for an acoustic device that is convenient for carrying. SOLUTION: In this speaker box, an upper cabinet 1 is turned clockwise around a turning shaft 3 with respect to a cabinet 11 in the carrying state, then a locking part 15 in the middle of an end ridge 14 is unlocked from a recessed part 8a of the upper cabinet 1, the locking part 15 enters a recessed part 8b at a position where the end ridge 14 is pressed into contact with an end ridge 7 and then the locking part is locked in a click sense and then the reproduction state of the speaker box is set. Thus, the thickness of the cabinet and the inner volume are maximized and a low frequency sound is sufficiently reproduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker box for reproducing the output of an audio device from a speaker.

[0002]

2. Description of the Related Art In the field of general audio, a speaker box is often used in which a speaker box is provided separately from an audio equipment main body and audio output is applied to the speaker box from the audio equipment main body. In recent years, its applications are expanding, such as amplifying and reproducing the output of a headphone acoustic device and reproducing the audio output of a personal computer.

[0003]

However, in a conventional speaker box of such a form, a larger housing has better bass and reproduces sound quality better, but has a problem of poor portability.

An object of the present invention is to provide a speaker box which is small in size, has good portability, has a large volume when used, reproduces low sounds well, has good sound quality, and can enjoy an arrangement suitable for the purpose of use. Aim.

[0005]

According to a first aspect of the present invention, there is provided a speaker box having a sound hole for emitting sound from a speaker on a first surface and facing the first surface. A main body having a box-shaped second surface that is an open surface and having a rotating means on a rotation axis parallel to one side, and a box-shaped first surface that is an open surface and having an inner surface extending from the open surface of the main housing. A sub-housing that has a size that fits into the main housing and that is rotatable within a predetermined range with respect to the main housing and has a turning means that engages with the turning means of the main housing, and specifies the turning of the main housing with respect to the sub-housing. This is a configuration in which locking means for locking at a location or any locking position is provided.

With this configuration, the sub-housing is inserted into the main housing during carrying, and the main housing is rotated with respect to the sub-housing by the rotation means around the rotation axis during reproduction, so that the inner volume is enlarged and locked. The means act to fix both positions.

As a result, the portable device is small and compact when it is carried, and its original size can be obtained during reproduction. In addition, the size of the sound can be set at an intermediate stage, the sound emission direction can be changed, and the volume can be changed to enjoy different sound quality.

According to a second aspect of the present invention, in the configuration of the first aspect, a projection is provided on a side surface of the sub-housing so as to be flush with a side surface of the main housing so that a rotation axis is in a vertical direction. It is characterized in that it can be placed horizontally in any position.

With this configuration, in addition to the effects of the first aspect, various arrangements can be enjoyed according to the purpose.

According to a third aspect of the present invention, in the speaker box according to the first or second aspect, the sub-housing or the main housing is opened only when the sub-housing and the main housing rotate, so that the inside and outside air flow. It is characterized by providing a valve to perform.

According to this configuration, the valve is opened only when the sub-housing and the main housing rotate, so that air flows inside and outside. Therefore, it is difficult to rotate the housing when the tightness of the speaker box is good. The inconvenience of damaging the speaker can be eliminated.

According to a fourth aspect of the present invention, there is provided the speaker box according to the first or second aspect, wherein a duct is provided in the main housing or the sub-housing, and when the sub-housing and the main housing are rotated through the duct, the inside and outside air flows. It is characterized by distribution.

According to this configuration, the sound quality can be improved by the duct in addition to the effect of the third aspect.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a speaker box according to the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 is an external perspective view of a speaker box according to a first embodiment of the present invention, FIG. 2 is a side sectional view thereof, and FIG. 4 is a perspective view showing the locking means of the sub-housing, and FIGS. 1 and 2 show a state during carrying and a state during reproduction, respectively. The upper cabinet 1 which is a main housing is a box-like shape having an open surface 2 on a bottom surface which is a second surface opposite to the upper surface in FIG. 3 has a side section that is substantially triangular with the vicinity of the rotating shaft 3 as a vertex, and a shaft portion 4 that projects coaxially with the rotating shaft 3 from both sides toward the inside of the cabinet 1.
a and 4b. A shaft decoration 4c is provided outside the periphery of the shaft portions 4a and 4b. The upper surface of the cabinet 1 has a sound hole 6 for emitting the sound output of the speaker 5 mounted inside. The sound hole 6 may be provided with a large number of holes integrally with the cabinet 1, or another part having a large number of holes may be attached for design consideration. The edge 7 of the open surface 2 farther from the rotation shaft 3 protrudes inward in a rib shape.

Next, the lower cabinet 11, which is a sub-housing, has an open surface 12 on the upper surface, which is the first surface. Like the cabinet 1, it has a substantially triangular shape having the vertex near the rotation axis 3. The shaft holes 13 a and 13 b provided coaxially with the rotation shaft 3 are provided in the shaft portion 4 of the upper cabinet 1.
The lower cabinet 11 rotates about the rotation shaft 3 with respect to the upper cabinet 1 by fitting with the upper and lower cabinets 1 and 4b. Thus, the edge 14 remote from the rotation shaft 3 protrudes outward in a rib shape, and engages with the edge 7 of the upper cabinet 1 to prevent further rotation. The central portion of the edge 14 serves as a locking portion 15 and further projects outward from the edge 14, and engages with the recesses 8 a and 8 b on the inner surface of the upper cabinet 1 to form locking means. Is locked in a closed state or an open state. Locking part 15
4 may be provided at both ends of the locking portion 15 as shown by broken lines in FIG. Since the edge 14 moves in an arc shape by the rotation of the lower cabinet 11 with respect to the rotation shaft 3, the inside of the upper cabinet 1 is preferably formed in an arc shape in accordance with the edge. Lower cabinet 11
And several fingers 11b are provided on both side surfaces which are farther from the rotating shaft 3 and which are left outside even when the lower cabinet 11 has finished rotating into the upper cabinet 1 and the fingers are hooked. Keep it easy. The shaft portions 4a and 4b may be provided in the lower cabinet 11 and the shaft holes 13a and 13b may be provided in the upper cabinet 1. However, the design of the embodiment will be easier to process. Alternatively, the shaft portions 4a and 4b may be separate components instead of being integrated with the upper cabinet.

The operation will be described next. 1 and 2 when carrying, the lower cabinet 11 is deeply inserted into the upper cabinet 1, and the locking portion 15 at the center of the edge 14 is inserted into the concave portion 8a of the upper cabinet 1. In this state, the thickness is the thinnest, and the inner volume of the speaker box is also the smallest. Therefore, hold the upper cabinet 1 with one hand and the lower cabinet 1 with the other hand.
When the upper cabinet 1 and the lower cabinet 11 are separated from each other by pressing the projections 11b on both side surfaces of the upper cabinet 1, the locking portion 15 is separated from the concave portion 8a and the upper cabinet 1 is centered on the rotation shaft 3 with respect to the lower cabinet 11. As shown by the arrow in the figure, the locking portion 15 enters the recess 8b and locks with a click feeling when the edge 14 abuts on the edge 7 by rotating clockwise as indicated by the arrow in FIG. This is the state at the time of reproduction in b). At this time, the end 1a of the upper cabinet 1 along the rotation axis 3 and the end 11a of the lower cabinet 11 along the same rotation axis 3 overlap, the interior of the cabinet is sealed, the cabinet thickness is maximized, and the internal volume is also reduced. It is about twice as large as that of a mobile phone, and can reproduce a sufficiently low tone.
In order to return to the state when the mobile phone is carried, the reverse operation may be performed.

If the size of the locking portion 15 is appropriately selected, the concave portion 8a
And 8b can be stopped by friction, and if a plurality of recesses are provided between the recesses 8a and 8b of the upper cabinet 1, they can be locked in the middle of rotation, and the state of the reproduction state can be improved. It can be changed freely. Also, the outer surface around the open surface 12 of the lower cabinet 11 or the upper cabinet 1
If a gap between the lower cabinet 11 and the upper cabinet 1 is sealed by attaching a not-shown felt, sponge, or the like to the inner surface around the open surface 2, a closed speaker box can be obtained.

As described above, in the speaker box of the present embodiment, the upper cabinet 1 is rotated with respect to the lower cabinet 11 about the rotation shaft 3 so that
By locking to b, the thickness can be made small and the internal volume small when carrying, and the thickness can be made large and the internal volume can be made large during reproduction to reproduce with good sound quality. Also, if the sound is reproduced in the portable state or at an intermediate position from the reproduction state, an attenuated low sound quality different from the original reproduction state can be obtained, and the sound quality can be changed and enjoyed.

(Second Embodiment) FIG. 5 is an external perspective view of a speaker box according to a second embodiment of the present invention, and FIG. 6 is an external view of the speaker box in a horizontal state. The upper cabinet 1 has protrusions 1b on one or both sides as shown in FIG. 5, and the lower cabinet 11 has one protrusion 11c on one or both sides instead of the protrusions 11b of FIG. Then, the heights of the projections 1b and 11c and the shaft decoration 4c are made uniform. Other parts are the same as those of the first embodiment. At the time of reproduction from the time of carrying the projection 1b with one hand, and the projection 11c with the other hand.
Over the lower cabinet 11 and the upper cabinet 1
Is rotated. As shown in FIG. 5, the sound hole 6 may be installed obliquely upward. As shown in FIG. 6, the sound hole 6 is supported at three points of the projections 1b and 11c and the shaft decoration 4c so that the rotating shaft 3 is in the vertical direction. It may be installed horizontally at any position.

As described above, in the present embodiment, the protrusions 1b and 11c serving as clues for rotation are provided, and the heights of the protrusions 1b and 11c and the shaft decoration 4c are made uniform. You can enjoy the arrangement.

When the upper cabinet 1 does not have the projection 1b and the shaft decoration 4c, the projection 11c of the lower cabinet may be formed so as to be flush with the side surface of the upper cabinet 1.

(Third Embodiment) FIGS. 7A and 7B are side sectional views of a speaker box according to a third embodiment of the present invention, in which FIG. 7A is a portable state, and FIG. It is a figure showing the state where it is shifting. 2 is different from FIG. 2 in that a concave portion 16 is formed integrally with the lower cabinet 11 and is provided with a valve 18 having a thin portion 17 having flexibility. Other parts are the same as those of the first embodiment.

The operation of the upper cabinet 1 will now be described. When the upper cabinet 1 is rotated from the portable state to the reproducing state as shown by an arrow in FIG. However, there is a possibility that the upper cabinet 1 is difficult to rotate due to the hermetic seal, or the diaphragm of the speaker 5 is sucked inward and damaged. In particular, as described in the first embodiment, a gap between the lower cabinet 11 and the upper cabinet 1 is provided by attaching a felt or a sponge to the outer peripheral surface of the open surface 12 of the lower cabinet 11 or the inner peripheral surface of the open surface 2 of the upper cabinet 1. It is severe if the seal is closed. At this time, the valve 18 pivots upward (inward) as shown by the arrow in FIG. 7B and sucks outside air, so that the upper cabinet 1 easily pivots and the diaphragm of the speaker 5 is damaged. Never do. Even when the upper cabinet 1 is to be rotated from the time of reproduction to the state of carrying, the diaphragm of the speaker 5 may be damaged by being pressed outward because the inner volume is about to be reduced. However, the valve 18 is now pivoted downward (outward) in the opposite direction to the arrow in FIG. 7B to allow the air inside to escape, so that the upper cabinet 1 is easily pivoted and the speaker The diaphragm No. 5 is not damaged.

At the time of regeneration, the valve 18 is closed while maintaining the neutral position as in FIG. 7A, so that no air flows in and out, and the sealing effect is not impaired. Here, the configuration of the valve 18 that opens both inward and outward has been described, but a valve that opens only inward and a valve that opens only outward may be provided. Also, the valve is provided in the lower cabinet 11, but a valve may be provided in the upper cabinet 1 if the design can be skillfully performed.

(Fourth Embodiment) FIGS. 8A and 8B are side sectional views of a speaker box according to a fourth embodiment of the present invention, wherein FIG. 8A shows a state during carrying and FIG. 8B shows a state during reproduction. In the figure, a duct (port) 19 opened toward the inside is provided on the side of the sound hole 6 of the upper cabinet 1, and this speaker 19 is used by the duct 19.
The frequency characteristics are adjusted by the acoustic load at the rear of the diaphragm, and the upper cabinet is difficult to rotate due to the air pressure accompanying the expansion and contraction of the internal volume at the time of rotation of the upper cabinet 1 pointed out in the third embodiment. This is intended to prevent the problem that the diaphragm is damaged by circulating air through the duct 19. Other configurations are the same as those of the first embodiment. Here, the duct 19 is provided in the upper cabinet 1, but may be provided in the lower cabinet 11.

In each of the above embodiments, the case where only the speaker is provided in the housing has been described. However, an electronic circuit may be provided inside the housing to amplify an input signal and reproduce the signal from the speaker. Of course. Various other modifications can be made within the scope of the claims.

[0027]

As described above, according to the speaker box of the present invention, the speaker box of the present invention is compact and compact when it is carried, and its original size can be obtained during reproduction. In addition, the size of the sound can be set at an intermediate stage, the sound emission direction can be changed, and the volume can be changed to enjoy different sound quality.

According to the second aspect of the present invention, the apparatus can be placed horizontally, and in addition to the effect of the first aspect, various arrangements can be enjoyed according to the purpose.

According to the third aspect of the present invention, there is no danger that the housing is difficult to rotate or the speaker is damaged when the sealing property is good, and according to the fourth aspect of the present invention. In addition to the effect, the sound quality can be improved by the duct.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a speaker box according to a first embodiment of the present invention.

FIG. 2 is a side sectional view of the same.

FIG. 3 is a cross-sectional view showing a part of the rotating means.

FIG. 4 is a perspective view showing a locking means of the sub-housing.

FIG. 5 is an external perspective view of the speaker box according to the second embodiment.

FIG. 6 is an external view of the same horizontal state.

FIG. 7 is a side sectional view of the speaker box of the third embodiment.

FIG. 8 is a side sectional view of the speaker box of the fourth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper cabinet 2 Opening surface 3 Rotating shaft 4a, 4b Shaft part 5 Speaker 6 Sound hole 7, 14 Edge 8a, 8b recess 11 Lower cabinet 11b, 11c Projection 12 Opening surface 13a, 13b Shaft hole 15 Locking part 16 recess 17 Thin part 18 Valve 19 Duct

Claims (4)

[Claims] 1. A box-shaped rotating shaft parallel to one side having a sound hole for emitting sound from a speaker on a first surface and a second surface facing the first surface being an open surface. A main body having a turning means, and a turning means engaged with the turning means of the main housing, the first face being a box shape having an open face and having a size to enter the inside from the open face of the main casing. A sub-housing that is rotatable within a predetermined range with respect to the main housing, and a locking means is provided for locking the rotation of the main housing with respect to the sub-housing at a specific location or an arbitrary locking position. A speaker box, characterized in that: 2. The apparatus according to claim 1, wherein a projection is provided on a side surface of the sub-housing so as to be at the same height as the side surface of the main housing, and the projection can be placed horizontally at a position where a rotation axis is in a vertical direction. Speaker box. 3. The sub-housing or the main housing is provided with a valve that opens only when the sub-housing and the main housing rotate to allow air to flow between the inside and the outside. Speaker box. 4. The loudspeaker according to claim 1, wherein a duct is provided in the main housing or the sub-housing, and inside and outside air are circulated through the duct when the sub-housing and the main housing rotate. box.