JP2001346289A - Loudspeaker system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a lightweight speaker system that can be recycled with abundant workability for the recycle without causing air pollution. SOLUTION: The loudspeaker system 1A that is one embodiment of this invention is structured such that a magnetic circuit section 20 consisting of an outer plate 21, an inner plate 22, a resin-made magnetic substance 23, and a magnet 24 is screwed to a base 12 of a frame 10 by male screws 80, 81, 82 together with a damper 40 having a terminal section 45, a voice coil 30 is inserted to an air gap G and a cone type diaphragm 50 is adhered to an opening 11 and the voice coil 30 of the frame 10. A caption 70 indicates a rectifier, which is screwed with the male screw 82 when the magnetic circuit section 20 is screwed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightweight and highly recyclable speaker device.

[0002]

2. Description of the Related Art At present, most of loudspeaker devices generally manufactured and sold are composed of parts such as plates, yokes, magnets, coils (voice coils), bobbins, dampers, and the like. All glued,
Fixed.

[0003]

Therefore, at present, the speaker device of the prior art is not designed and manufactured in consideration of the recycling of parts, and all parts of the speaker device that are no longer needed are discarded as they are. Was.

Further, even if the speaker device is disassembled into individual parts and some parts, for example, plates, yokes, magnets and caps are to be recycled, a solvent for dissolving the adhesive is required. In addition, some of these solvents or gases generated upon dissolution may be harmful to the human body, which may cause air pollution and are difficult to recycle.

The present invention is intended to solve such a problem, and an object of the present invention is to obtain a lightweight speaker device which is recyclable, has good workability, does not cause air pollution, and is lightweight. is there.

[0006]

Therefore, according to the first aspect of the present invention, a speaker device is provided with a bobbin in which a magnetic circuit portion is provided at a base portion of a frame, and a coil is wound around an air gap of the magnetic circuit portion. A cone-shaped diaphragm having a central part adhered to the bobbin and an outer peripheral part adhered to an opening of the frame is provided, and a fitting part and a screw insertion hole to which the bobbin is fitted and adhered are provided. The above object is achieved by providing a damper provided with a mounting portion and a terminal portion having the damper, the damper, the frame, and the magnetic circuit portion mounted by screws.

According to a second aspect of the present invention, in the speaker device according to the first aspect, the damper includes a fitting hole in which the bobbin is fitted, and an elastic connecting portion outside the fitting hole. And an outer ring portion provided with a mounting portion each having a plurality of screw insertion holes, and a terminal portion having a connection piece connected to the coil are integrally formed and provided. And

According to the third aspect of the present invention, the speaker device is formed by winding a magnetic circuit portion including a plate, a yoke, and a magnet on a base of a frame, and a coil disposed in an air gap of the magnetic circuit portion. This problem is solved by disposing a bobbin formed of a conical diaphragm over the bobbin and the opening of the frame, and forming the yoke from a resin magnetic material or a rubber magnetic material.

Further, in the invention according to claim 4,
According to a third aspect of the present invention, in the speaker device according to the third aspect, the magnet is formed of a neodymium magnet.

Further, in the invention according to claim 5, the speaker device according to claim 3 is characterized in that the magnet is made of a resin magnet or a rubber magnet.

Further, according to a sixth aspect of the present invention, in the speaker device according to the third aspect, the magnet is engaged with an engaging portion formed on the yoke portion.

According to a seventh aspect of the present invention, in the speaker device according to the third aspect of the present invention, a rectifier having a support having a screw insertion hole formed in a lower end surface is provided inside the bobbin. The rectifier is screwed from the yoke portion side with a screw.

According to a further aspect of the present invention, the magnet in the loudspeaker device according to the third aspect is engaged with the support of the rectifier according to the seventh aspect. .

Therefore, according to the first aspect of the present invention,
The speaker device can be made flat and lightweight as a whole, and when the speaker device is discarded, it can be easily disassembled and the frames, which are the main parts, and the constituent magnets and screws of the magnetic circuit portion can be recycled.

According to the second aspect of the present invention,
In addition to the functions and effects of the speaker device according to the first aspect, the structure of the speaker device can be simplified and assembly can be facilitated.

According to the third aspect of the present invention, the speaker device can be configured to be flat and lightweight as a whole,
When the speaker device is discarded, it can be easily disassembled, and the frames, which are the main components, the magnets and screws of the magnetic circuit portion can be recycled, and the magnetic coupling can be effectively enhanced.

According to the fourth aspect of the present invention, in addition to the function and effect of the loudspeaker device according to the third aspect, magnetic coupling can be further effectively enhanced.

Further, according to the invention described in claim 5, in addition to the function and effect of the speaker device described in claim 3, the weight can be further reduced.

Further, according to the invention described in claim 6, in addition to the function and effect of the speaker device described in claim 3, the assembly of the magnetic circuit section becomes easy.

According to the seventh aspect of the present invention, in addition to the function and effect of the loudspeaker apparatus according to the third aspect, the sound generated from the cone-shaped diaphragm is arranged and the rectifier is easily formed. Can be recycled.

According to the eighth aspect of the present invention, in addition to the function and effect of the loudspeaker device according to the third aspect, the rectifier can be easily positioned.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A speaker device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a speaker device according to a first embodiment of the present invention, FIG. 2 is a rear view of the speaker device shown in FIG. 1, and FIG. 3 is a view of the speaker device shown in FIG. FIG. 4 shows a damper which is a component part incorporated in the speaker device shown in FIG. 1, FIG. 4A is a plan view thereof, and FIG. 4B is a sectional view of a terminal portion of FIG. FIG. 5, FIG. 5 is a sectional view of the speaker device according to the second embodiment of the present invention, FIG. 6 is a front view of the speaker device of the third embodiment of the present invention, FIG. 7 is a rear view of the speaker device shown in FIG. FIG. 8 is a sectional side view of the speaker device shown in FIG. 6 taken along the line AA.

First, the first embodiment of the present invention will be described with reference to FIGS.
The configuration of the speaker device according to the embodiment will be described.

In the drawings, reference numeral 1A generally indicates a speaker device according to an embodiment of the present invention. The speaker device 1A is assembled around a frame 10. The frame 10 has a large-diameter circular opening 11, a small-diameter circular base 12, and a plurality of columns 13 that evenly support them. And a resin member having a structure opened in a cone shape. Reference numeral 13a is a hole provided partially in the frame 10.

A magnetic circuit section 20 is provided on the back of the base section 12 of the frame 10. The magnetic circuit section 20 includes an outer plate 21 and an inner plate 22 made of a magnetic material, a magnetic material 23 made of resin, and a magnet 24.

The outer plate 21 is formed in a ring shape and is made of a magnetic material of metal steel. The inner plate 22 is formed of a magnetic metal plate having the same material and the same thickness as the outer plate 21. It is arranged so as to be concentric with the outer plate 21 and a slight air gap G, and to form the same plane. Also,
At four positions (only two positions are shown in FIG. 3) of the outer plate 21, screw insertion holes 211 are formed at regular intervals of 45 degrees.

Behind the outer plate 21 and the inner plate 22 (the lower surface), a resin-made magnetic body 23 is disposed so as to straddle these. This resin magnetic body 23
Is, for example, a magnetic material formed by uniformly mixing magnetic powder such as ferrite with a polyester resin,
At the portion facing the air gap G, the outer plate 2
An annular recess 231 is formed in a portion facing the outer plate 21 and the inner plate 22 so that an annular space S is formed by the inner plate 1 and the inner plate 22. A plurality of, in this embodiment, four female screw holes 232 and an annular recess 233 and an annular recess 233 of a size large enough to fit the annular magnet 24 on the inner peripheral surface facing the inner plate 22. Female screw holes 234 are formed on the bottom surface at a plurality of predetermined intervals. Furthermore, the pole 23 at the center of the resin magnetic body 23
5 is provided with a through hole 236. Resin magnetic body 2
3 can be easily formed into such a shape, and since the yoke is made of resin, the weight can be significantly reduced.

The magnet 24 is preferably, for example, a neodymium magnet. When a neodymium magnet is used as the magnet 24, the magnetic force is strong, so that a small magnet can produce a large magnetic field in the air gap G.

The bobbin 31 around which the voice coil 30 is wound is provided in the air gap G and the space S of the magnetic circuit section 20.
Are inserted and arranged.

A damper, for example, a damper 40 as shown in FIG. 4 is mounted inside the base 12 of the frame 10. This damper 40 is a voice coil 3
0, a fitting hole 41 to be fitted to the bobbin 31 wound around it, an outer ring portion 42 attached to the base 12 of the frame 10, and four elastic connecting portions 43a,
3b, 43c, and 43d, a damper having a structure in which a terminal portion 45 is formed on one side edge of the outer ring portion 42, and the terminal portion 45 is made of metal as shown in FIG. 4A. Connection piece 46 is embedded. A conducting wire 47 is wired from the fitting hole 41 to the connecting piece 46 of the terminal 45 through a part of the elastic connecting portion 43 a and the outer ring 42. An output terminal T from an audio amplifier is connected to the connection piece 46. In addition, mounting portions 49 having screw insertion holes 48 are provided integrally at four positions of the outer ring portion 42 at equal angular intervals of 45 degrees. The damper 40 is integrally formed of a resin such as nylon.

In addition, the speaker device 1A of the present embodiment
Is a cone-shaped diaphragm 50 made of, for example, Conex (cloth) for reproducing the whole range, particularly a high-range diaphragm 60 for reproducing a high-range sound, and has a rectifying function in the direction of sound. A cylindrical column 71 is formed at the lower end of the rectifying body 70. The rectifying body 70 has a female dome-shaped cap and is provided with a female screw 72 at its lower end.

Next, a method of assembling the speaker device 1A including the above-described components will be described. The magnet 24 is fitted into the annular concave portion 233 at the center of the inner surface of the resin magnetic body 23 via the pole 235, and the four male screws 80
The female screw 234 of the resin magnetic body 23 is inserted from the inner side of the
And screw it in.

The resin magnetic body 2 of the outer plate 21
3, the damper 40 is positioned on the surface opposite to the mounting side, the male screw 81 is inserted into the screw insertion holes 48, 211, and the outer plate 21 is sandwiched between the damper 40 and the female screw hole of the resin magnetic body 23. 232 and fix it.

The bobbin 31 has an air gap G and a space S.
The upper end of the coil is soldered to the metal terminal 46 which is wired and faces the fitting hole 41 of the damper 40.

The cone-shaped diaphragm 50 has an edge 51 on the outer periphery thereof, and the edge 51 is bonded to the opening 11 on the outer periphery of the frame 10 with an emulsion bond (registered trademark). Adhere and fix to the part with epoxy bond.

The lower end (center side) of the high-frequency range diaphragm 60 is bonded and fixed to the upper end of the bobbin 31 with an epoxy bond, and the upper end (outer peripheral side) is a free end.

Furthermore, a rectifying body 70 formed of resin
Are positioned at the center of the bobbin 31, and the male screw 82 is inserted into the through hole 236 formed at the center of the resin magnetic body 23.
And screwed into the female screw 72 of the rectifier 70 to fix it.

The speaker device 1A of the present invention is assembled by using screws and adhesives as described above.

The speaker device 1 thus assembled
A fulfills its mission and, in the case of recycling, first, an edge 51 provided on the outer periphery of the cone-shaped diaphragm 50.
, And the cone-shaped diaphragm 50 is torn off from the voice coil 30 so that the male screw 81 of the damper 40 can be removed.

Thereafter, the three types of male screws 80, 81,
82, the frame 10, the outer plate 2
1, inner plate 22, resin magnetic body 23, magnet 24,
The rectifier 70 can be disassembled.

By disassembling in this manner, the three types of male screws 80, 81, and 82 are removed, and the frame 1 is removed.
The outer plate 21, the inner plate 22, the resin magnetic body 23, the magnet 24, and the rectifier 70 can be recycled, and the damper 40 can be recycled if necessary. The discarded parts are the bonded bobbin 31, the cone-shaped diaphragm 50 and the treble diaphragm 60 which can be incinerated.
Only, which greatly reduces the number of parts to be discarded.

The speaker device according to the embodiment of the present invention employs an assembling structure using the above-described screws, so that it is easy to assemble, the main constituent members can be recycled, and a solvent that dissolves the adhesive is used. The amount can be greatly reduced, and thus the pollution of the air can be prevented, so that the health of workers can be protected.

Further, by using the resin magnetic material 23, molding is easy, it can be molded into a relatively arbitrary shape, and the weight can be reduced.

Further, when a neodymium magnet is used as the magnet 24, a large amount of magnetic flux can be obtained even with a small magnet, so that the sound quality can be improved and the sound pressure can be sufficiently obtained.

Next, a speaker device 1B according to a second embodiment of the present invention will be described with reference to FIG.

The speaker device 1B of the second embodiment has substantially the same configuration and structure as the speaker device 1A of the first embodiment, and only different points will be described. That point is the structure of the resin magnetic body 23B and the rectifier 70B.

The resin magnetic body 23B is obtained by eliminating the pole 235 at the center of the resin magnetic body 23 in the speaker device 1A and forming the peripheral portion 237 in a plate-like structure.
One rectifier 70B extends the lower end of the column 71 at the center of the rectifier 70 in the speaker device 1A to a length that sufficiently penetrates the inner plate 22, and further extends the leg 71b of the extension. The diameter of the column 71B is smaller than the diameter of the upper leg 71a.

By arranging both members with such a structure, the positioning of the rectifier 70B with respect to the inner plate 22 can be easily performed at the time of assembling, and the male screw 82 is screwed into the column 71B of the rectifier 70B and the rectifier 70B and resin Magnetic body 23
B, and a male screw 81 is inserted from below the outer plate 21 so that the base 1 of the frame 10 can be fixed.
2 and the damper 40 can be screwed together. The damper 40 in this case has a structure in which a female female screw 49a made of metal is insert-molded in the mounting portion 49.

By employing such an assembly structure, the male screw 81 and the male screw 82 can be removed without peeling the cone-shaped diaphragm 50 from the opening 11 of the frame 10 at the time of disassembly for recycling. By simply removing these screws, the outer plate 21, the inner plate 22,
The resin magnetic body 23 and the magnet 24 can be separated from the frame 10, and the rectifier 70 can be removed. Needless to say, the voice coil 30, the damper 40, the cone-shaped diaphragm 50, and the treble diaphragm 60 are removed. It can be taken out as it is while being adhered, which facilitates disassembly and disposal.
Also, by extending the column 71B as described above,
The amount of the resin-made magnetic body 23 can be reduced, and the cost can be reduced. The same components as those of the speaker device 1A are denoted by the same reference numerals, and description thereof will be omitted.

Next, a speaker device 1C according to a third embodiment of the present invention will be described with reference to FIGS. The speaker device 1C has been invented for the purpose of reducing the number of parts, assembling and disassembling man-hours, and reducing product cost and recycling cost as compared with the speaker devices 1A and 1B. The fluid 70 and the inner plate 22 are eliminated, and a yoke 90 having a pole portion 93 and a flange portion 91, and a ring-shaped resin magnetic body 92 interposed between the flange portion 91 and the plate 21 are provided. The body 92 is magnetized into a resin magnet. A plurality of female screw holes 91a are formed in the flange portion 91, and a plurality of screw insertion holes 92a are formed in the resin magnet 92.

When assembling as the speaker device 1C, the screw insertion hole 92a, the female screw hole 91a, the screw insertion hole 211 of the outer plate 21, the screw insertion hole 48 of the damper 40, and the screw insertion hole 12a of the base 12 of the frame 10. Are arranged in a straight line, a male screw 81 is inserted from the damper 40 side, and the tip is screwed into a female screw hole 91 a of the flange 91 to form a magnetic circuit portion 20 </ b> C. Then, the voice coil 30 is inserted into the air gap G, and the voice coil 30 is fixed to the fitting hole 41 of the damper 40, and the leading end of the conducting wire 47 is connected.
The edge 51 is bonded to the opening 11 of the frame 10 to complete the speaker device 1C.

In the case of recycling, the edge 51 of the cone-shaped diaphragm 50 is peeled off from the opening 11 of the frame 10 and the male screw 81 is pulled out, so that the voice coil 3 is removed.
0 and the damper 40 can be removed, and the frame 10, the outer plate 21, the pole 90, the ring 92
And three to four male screws 81 can be easily disassembled.

It is needless to say that a rubber magnetic body can be used by mixing magnetic powder into natural rubber instead of the resin magnetic bodies 23, 23B and 92 of the first to third embodiments. The magnetic material has the same function and effect as the magnetic material made of resin.

[0055]

As described above, according to the speaker device of the present invention, as compared with the conventional speaker device, Main components can be recycled. 2. The amount of solvent used can be reduced, and air pollution can be reduced accordingly. 3. By using a resin magnetic material and a rubber magnetic material, molding is easy and a relatively arbitrary shape can be obtained. 4. The weight of the entire speaker device can be reduced by using a resin magnetic material and a rubber magnetic material. 5. The worker's health can be protected from the effects of the second item. By using a combination of a resin magnetic material and a neodymium magnet, a number of excellent effects can be obtained, such as obtaining a speaker device having good sound quality and sufficient sound pressure.

[Brief description of the drawings]

FIG. 1 is a front view of a speaker device according to a first embodiment of the present invention.

FIG. 2 is a rear view of the speaker device shown in FIG.

FIG. 3 is a cross-sectional side view of the speaker device shown in FIG. 1 taken along line AA.

FIGS. 4A and 4B show a damper which is a component part incorporated in the speaker device shown in FIG. 1; FIG. 4A is a plan view of the damper, and FIG. .

FIG. 5 is a sectional view of a speaker device according to a second embodiment of the present invention.

FIG. 6 is a front view of a speaker device according to a third embodiment of the present invention.

7 is a rear view of the speaker device shown in FIG.

8 is a sectional side view of the speaker device shown in FIG. 6 taken along line AA.

[Explanation of symbols]

1A, 1B, 1C: Speaker devices of various embodiments of the present invention, 10: Frame, 11: Openings of frame 10, 1
2. Base of frame 10, 20 magnetic circuit section, 21 outer plate, 22 inner plate, 23 resin magnetic body, 24 magnet, 40 damper, 45 damper 40
, 47 ... conductive wire, 50 ... cone-shaped diaphragm, 51 ...
Edge of cone type diaphragm 50, 60 ... diaphragm for high frequency range,
70 ... Rectifier, 71 ... Cylinder, 80,81,82 ... Male screw, 90 pole, 91 ... Flange of pole 90, 92 ...
ring

Claims (8)

[Claims] 1. A magnetic circuit portion is provided at a base of a frame, a bobbin around which a coil is wound is disposed in an air gap of the magnetic circuit portion, a center portion is bonded to the bobbin, and an outer peripheral portion is an opening of the frame. And a damper provided with a fitting portion to which the bobbin is fitted and bonded, a mounting portion having a screw insertion hole, and a terminal portion. A speaker device comprising a frame and the magnetic circuit unit which are attached by screws. 2. The damper has a fitting hole into which the bobbin is fitted, and a mounting portion connected to the outside of the fitting hole via an elastic connecting portion and having a plurality of screw insertion holes. 2. The speaker device according to claim 1, wherein the provided outer ring portion and a terminal portion having a connection piece connected to the coil are integrally formed and provided. 3. A magnetic circuit section comprising a plate, a yoke and a magnet, and a bobbin formed by winding a coil disposed in an air gap of the magnetic circuit section are provided at a base of the frame. A speaker device comprising a cone-shaped diaphragm disposed over an opening of a frame, and the yoke made of a resin magnetic material or a rubber magnetic material. 4. The speaker device according to claim 3, wherein said magnet is formed of a neodymium magnet. 5. The speaker device according to claim 3, wherein the magnet is made of a resin magnet or a rubber magnet. 6. The speaker device according to claim 3, wherein the magnet is engaged with an engaging portion formed on the yoke portion. 7. A rectifier having a support having a screw insertion hole formed at a lower end surface is provided inside the bobbin,
The speaker device according to claim 3, wherein the rectifier is screwed from the yoke portion side with a screw. 8. The speaker device according to claim 3, wherein the magnet is engaged with a support of the rectifier in the speaker device according to claim 7.