JP2003061188A - Speaker and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speaker and its manufacturing method that can enhance the productivity and easily enhance the characteristics. SOLUTION: A frame 14 of a speaker 10 is divided into first and second frame bodies 15, 44 and connected with each other through joining. A voice coil 35, a magnetic circuit 16, and a damper 17 are fitted to the first frame body 15 to configure a first assembly 11. Cone paper 45 is fitted to the second frame body 44 to configure a second assembly 12. A claw shaped engagement section formed to the second frame body 44 is engaged with an engagement reception section 21 formed to the first frame body 15, the first and second assemblies 11, 12 are connected to configure the speaker 10. The two assemblies 11, 12 are produced in parallel to enhance the production efficiency.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker used in various audio equipment, and more particularly to a speaker having a diaphragm and a damper attached to a frame, and a method for manufacturing the speaker.

[0002]

2. Description of the Related Art Hitherto, a so-called drop-in method has been adopted in a manufacturing process of a speaker, in which constituent parts are sequentially incorporated. Specifically, like the speaker 1 shown in FIG. 6, the frame 3 is fixed to the magnetic circuit 2, the voice coil 4 is attached to the central portion thereof, and then the damper 6 is incorporated to form the bobbin 4 a of the voice coil 4. Bottom 3a of frame 3
And a cone paper 7 which is a vibrating plate is further incorporated into the bobbin 4a of the voice coil 4 and the head 3 of the frame 3.
b and the lead wire 4b of the voice coil 4
And a terminal 8 provided on the outer surface of the frame 3 are connected by a tinsel wire 9 for wiring. And this frame 3
In order to facilitate the work of incorporating the damper 6 and the cone paper 7, the head 3b and the bottom 3a are integrally molded, and the diameter Lb of the head 3b is smaller than the diameter La of the bottom 3a. It is set to be the same or larger.

[0003]

The above-mentioned conventional structure has a frame structure premised on the drop-in type manufacturing process. Therefore, for example, a damper and a voice coil, or a cone paper and a frame are connected in advance. As a result, it is not possible to produce each mechanical component assembly product in parallel, which makes it difficult to improve productivity by simplifying work.

Further, since it is not possible to generalize such that the mechanical parts assembly products manufactured separately are applied to other models, it is not possible to adopt a manufacturing method for manufacturing a plurality of models by combining common mechanical parts, which leads to production. It is difficult to improve the sex.

Further, due to the structure of the frame in which the head and the bottom are integrally formed, the dimensions of the damper and the cone paper are fixed, and the degree of freedom in improving the characteristics is low.

Furthermore, the wiring work between the voice coil and the terminal is a complicated work because the work space is limited because the head of the frame and the cone paper are present. In particular,
The smaller the frame diameter or the shallower the frame, the more difficult the work in which the working space is limited, which causes a problem.

In view of the above situation, the present invention aims to provide a speaker and a method of manufacturing the speaker which can improve productivity and can easily improve characteristics.

[0008]

In order to achieve the above-mentioned object, a speaker according to claim 1 of the present invention is configured such that a plurality of divided assemblies are gathered and combined to form a space. A magnetic circuit fixed to the first frame body, a voice coil movably arranged in the air gap, one end fixed to a bobbin carrying the voice coil, and the other end to the first frame body. A first assembly having a mounted damper and an engagement receiving portion that serves as one of alignment means at the time of uniting, and a peripheral edge of a cone paper as a vibration plate is fixed, and the alignment means and the position of the first assembly are fixed. Second of the second assembly to be combined and united
Second assembly provided with the alignment means of
That the assembly aligning means and the second assembly aligning means are separably united to integrate the first assembly and the second assembly, and the cone paper and the voice coil are connected and coupled together. It is a feature.

In this structure, since the speaker is divided into the first assembly and the second assembly, the first assembly in which the voice coil, the magnetic circuit and the damper are attached to the first frame body and the second frame body vibrate. The speaker can be manufactured by separately manufacturing the second assembly having the plate attached thereto and combining the first assembly and the second assembly.

Further, it becomes possible to produce each part and these assemblies in parallel, and it becomes possible to share parts among a plurality of models, and the wiring work of the voice coil can be performed without interfering with the diaphragm. The productivity is significantly improved as compared with the structure in which the parts are sequentially attached to the integrally formed frame.

Further, for example, it is easy to make the diameter of the damper larger than the diameter of the diaphragm, and as the compliance increases, the minimum resonance frequency is lowered and a speaker capable of reproducing lower sound is produced. Provided with good quality.

According to a second aspect of the present invention, in the loudspeaker according to the first aspect, the first assembly and the second assembly are attached by engaging with each other. Therefore, the first assembly and the second assembly are mounted. It will be easier to install and, and productivity will be improved. Further, when the speaker is assembled or discarded, the first assembly mainly composed of a metal part such as a magnetic circuit and the second assembly mainly composed of paper or a synthetic resin can be separated and collected, so that the waste materials Resource recovery becomes easy.

According to a third aspect of the present invention, in the speaker according to the first aspect, the cone paper is fixed to the bobbin carrying the voice coil with an adhesive to connect the cone paper and the voice coil together. Therefore, connection and coupling can be easily and easily performed.

According to a fourth aspect of the present invention, in the method of manufacturing a speaker, the voice coil, the magnetic circuit and the damper are attached to the first assembly, the diaphragm is attached to the second assembly, and the voice coil, the magnetic circuit and the damper are attached. And a second assembly having the diaphragm attached thereto, and the diaphragm attached to the second assembly attached to the voice coil attached to the first assembly. is there. In this configuration, since the frame is divided into the first frame body and the second frame body,
A first assembly in which a voice coil, a magnetic circuit, and a damper are attached to a first frame body and a second assembly in which a diaphragm is attached to a second frame body are separately manufactured, and the first assembly and the first assembly are separately manufactured. A speaker can be manufactured by combining the two assemblies.

Therefore, each member (assembly) can be manufactured in parallel, parts can be shared among a plurality of models, and the voice coil wiring work can be performed without interfering with the diaphragm. The productivity is significantly improved as compared with the structure in which the parts are sequentially attached to the integrally formed frame.

Further, it becomes easy to make the diameter of the damper larger than the diameter of the diaphragm, and as the compliance increases, the minimum resonance frequency is lowered and a speaker capable of reproducing a lower sound is produced with high productivity. Provided.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a speaker and a manufacturing method thereof according to the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, 10 is a speaker, and this speaker 10 is constructed by combining a first assembly 11 as a first assembly and a second assembly 12 as a second assembly. ing.

The first assembly 11 includes a first frame body 15 which is a lower part of a frame constituting a frame 14 which is divided into two parts, a voice coil 35 attached to the first frame body 15, a magnetic circuit 16 and a damper 17. I have it.

The first frame body 15 has heat resistance A
It is integrally formed of a BS resin into a substantially cylindrical shape with a bottom, and the inside is a magnetic circuit mounting portion. An engagement receiving portion 21 is formed so as to project inward.

A terminal base 23 is integrally projected from a part of the engagement receiving portion 21 toward the outer peripheral side, a pair of pins 24, 24 are attached to the terminal base 23, and a terminal 25 is formed. ing.

The magnetic circuit 16 includes a yoke 31 fixed to the magnetic circuit mounting portion of the first frame body 15, and the yoke 3
1, a magnet 32 fixed to a central concave portion, a pole 33 fixed to the head side of the magnet 32, and a voice coil 35 arranged in a gap 34 between the yoke 31 and the pole 33. ing.

The voice coil 35 has a cylindrical bobbin 37 around which a winding 36 is wound. The voice coil 35 has an inner peripheral portion connected to the bobbin 37 and an outer peripheral portion of the first frame body 1.
The voice coil 35 is held at a predetermined position by the damper 17 attached near the outer periphery of the head of the voice coil 5 so that the voice coil 35 does not contact the yoke 31 and the inside of the bobbin 37 does not contact the pole 33. .

Winding 36 which constitutes this voice coil 35
The tinsel wires 40, 40 are connected to both ends of the lead wire in advance, and these tinsel wires 40, 40 are connected to the pins 24, 24 of the terminal 25, respectively.

On the other hand, the second assembly 12 is the second frame body 44 which is the upper part of the frame constituting the frame 14.
And a cone paper 45 as a vibrating plate attached to the second frame body 44.

The second frame body 44 is integrally formed of ABS resin having heat resistance into a substantially cylindrical shape, and has a substantially cylindrical second frame body bottom portion 51 and a substantially elliptical cylindrical shape in a plan view. The second frame body head 52 is connected via the step portion 53.

The second frame body bottom portion 51 is formed to have an inner diameter dimension that can be fitted to the outer peripheral portion of the engagement receiving portion 21 of the first frame body 15. From the second frame body bottom portion 51,
Claw-shaped engaging portions 55 are elastically deformably integrally formed at three places, and are engageable with the bottom surface side of the engaging receiving portion 21 of the first frame body 15. This second frame bottom 51
The first frame body 15 and the second frame body 44 are accurately aligned and engaged by the alignment means by the engagement between the first frame body 15 and the engagement receiving portion 21 of the first frame body 15. Bobbin 37 with 35 and cone paper 45
Positioning at the time of connection with is also performed smoothly.

A front plate portion 57 having a substantially rectangular outer shape is integrally formed at the end portion of the second frame body head portion 52 on the head side, and further, from the outer peripheral portion of the front plate portion 57, Edge 58
Has been launched.

The cone paper 45 is formed in a rectangular shape when viewed from the surface, and has a hole 46 formed in the center through which a bobbin having a voice coil 35 is inserted. And this cone paper 4
5 uses an annular gasket 60, and the outer peripheral portion is the front plate portion 5.
It is fixed on 7. Although the center cap 41 is attached to the head of the bobbin 37, the center cap 41 may not be provided on the bobbin side and may be integrated with the cone paper 45.

In the assembly of the speaker 10, the first assembly 11 and the second assembly 12 are manufactured in parallel,
After that, as described above, the second frame body 44 is aligned and engaged with the first frame body 15 by the aligning means and attached, and the cone paper 45 is attached to the voice coil 3.
5 is connected to the bobbin 37 with an adhesive.
Further, since the alignment means has the two-part structure as described above, the first assembly 11 and the second assembly 12 can be easily separated by processing.

As described above, according to the present embodiment, the frame 14 of the speaker 10 is composed of the second frame body 44 serving as the cone paper attachment margin and the first frame body 15 serving as the damper attachment margin. Since the two-piece structure is divided into individual parts, and can be easily connected to each other, that is, can be integrated with one touch, that is, the first assembly 11 and the second assembly that can be easily connected to each other by incorporating parts in the frame bodies 15 and 44. A two-piece structure with 12 can be easily achieved, and when the speaker is used and discarded, it is possible to apply a slight force to a non-combustible portion including a metal portion and a combustible portion such as the cone paper 45. Can be easily separated.

Since the frame 14 has the two-piece structure as described above, it is possible to manufacture the mechanical component assembly products in parallel, and the production efficiency can be easily improved as compared with the conventional manufacturing method in which the components are sequentially dropped into the frame.

Further, since the frame 14 has a two-piece structure, the cone papers 4 having different sizes or shapes are used.
5. It is possible to easily combine various kinds of the first assembly 11 and the second assembly 12 with the damper 17 attached, and to improve the versatility by sharing the parts by combining the mechanical parts among the models. Productivity can be improved.

Further, wiring work for connecting the tinsel wire 40 connected to the voice coil 35 and the pins 24, 24 of the terminal 25 is possible without the second assembly 12, and the voice coil 35 and the terminal 25 are connected. Wiring work between can be facilitated.

Furthermore, since the frame 14 has a two-piece structure, the diameter of the damper 17 and the diameter of the cone paper 45 can be freely set. For example, the second embodiment of the present invention shown in FIGS. Since it is easy to make the diameter dimension of the damper 17 larger than the diameter dimension of the cone paper 45 as in the above-mentioned form, the minimum resonance frequency is lowered and reproduction of a lower sound is achieved as the compliance increases. It can be realized without lowering workability.

For example, as in the second embodiment shown in FIGS. 3 to 5, the first assembly 11 having the first frame body 15 and the second assembly 12 having the second frame body 44 are provided. Regarding the speaker 10 configured in combination, the second frame body 44 has the second frame body head 5
The diameter dimension of the second frame body bottom 51 side is made larger than the diameter dimension of the second side, and the damper 17 is made larger than the diameter dimension of the cone paper 45.
The diameter of can be increased.

In the second embodiment, as shown in FIG. 4, the engagement receiving portion 21 of the first frame body 15 is formed so as to expand stepwise on the outer peripheral side. The magnetic circuit 16 includes a center pole 64 having a disc-shaped bottom plate 63 on the bottom, an annular magnet 65 arranged so as to surround the center pole 64, and a top plate 66.
And etc.

In each of the above embodiments, the frame 1
4, the first frame body 15 and the second frame body 4
4 can be formed of a synthetic resin such as ABS resin, vinyl chloride resin, or polyethylene resin, or one or both of them can be formed of other material such as metal such as die cast of aluminum or zinc.

In each of the above embodiments, a flange-shaped engagement receiving portion is provided on the first frame body 15 side, and three claw-shaped engagement portions are provided on the second frame body 44 side. However, the structure is not limited to this structure as long as it can be engaged and attached by being fitted. For example, the engagement receiving portion of the first frame body 15 has a claw shape, The engaging portion on the side of the two-frame body 44 may be a flange-like stepped portion.

The claw-shaped structure is not limited to three,
There may be one place, two places, or a plurality of places such as four places or more, or may be formed into an annular shape or the like which is fitted by being deformed as a whole. The connecting portion with the two-frame body 44 may be fixed only by engagement, as shown in FIG. 4, using a resin adhesive 68, or by welding or the like.

[0041]

According to the speaker of the present invention, since the frame is divided into the first frame body and the second frame body,
A first assembly in which a voice coil, a magnetic circuit, and a damper are attached to a first frame body and a second assembly in which a diaphragm is attached to a second frame body are separately manufactured, and the first assembly and the first assembly are separately manufactured. A speaker can be manufactured by combining the assembly of 2 and each component can be manufactured in parallel, parts can be shared among multiple models, and the wiring work between the voice coil and the terminal can be done second.
This can be done without interfering with the assembly, and the productivity can be improved as compared with the configuration in which the parts are sequentially attached to the integrally formed frame.

At this time, the first frame body and the second frame body can be easily attached by engaging with each other, and the productivity can be improved.

In the speaker manufacturing method of the present invention, since the frame is divided into the first frame body and the second frame body, the first assembly in which the voice coil, the magnetic circuit and the damper are attached to the first frame body, Since the speaker can be manufactured by separately manufacturing the second assembly in which the vibration plate is attached to the second frame body and combining the first assembly and the second assembly, it is possible to perform parallel production of each member. It is possible to share parts among multiple models, and the wiring work between the voice coil and the terminal can be done without interference with the second assembly, and the parts can be sequentially mounted on the integrally formed frame. In comparison, the productivity can be improved, and the magnetic circuit of the first assembly can be used after combining the first assembly and the second assembly. It can also be mounted.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a speaker of the present invention.

FIG. 2 is a vertical sectional view of the same speaker.

FIG. 3 is a vertical cross-sectional view showing another embodiment of the speaker of the present invention.

FIG. 4 is an enlarged vertical sectional view of a part of the same speaker.

FIG. 5 is a bottom view of the same speaker.

FIG. 6 is a cross-sectional view showing a conventional speaker.

[Explanation of symbols]

10 speakers 14 frames 15 First frame body 16 Magnetic circuit 17 damper 35 voice coils 44 Second frame body 45 Cone paper as a diaphragm

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor, Tojin Hojo             Minebea, 753 Nakatate, Tamabo-cho, Nakakoma-gun, Yamanashi Prefecture             Onkyo Co., Ltd. F-term (reference) 5D012 CA02 CA03 CA08 CA13 FA10

Claims (4)

[Claims] 1. A speaker comprising a plurality of divided assemblies assembled and assembled together, wherein a magnetic circuit is provided with an air gap, is fixed to a first frame body, and is movably arranged in the air gap. A voice coil, a damper having one end fixed to a bobbin carrying the voice coil and the other end attached to the first frame body, and an engagement receiving portion which is one of alignment means at the time of combination. A first assembly having the same; a second assembly having a second alignment means of the second assembly for fixing the peripheral edge of the cone paper as the vibrating plate and aligning with the alignment means of the first assembly; The positioning means of the first assembly and the positioning means of the second assembly are separably combined to integrate the first assembly and the second assembly and Speaker, characterized in that it has been assembled and down paper and a voice coil coupled bonded to. 2. The speaker according to claim 1, wherein the first assembly and the second assembly of the assembled speaker are separable. 3. The structure for connecting and connecting the cone paper and the voice coil is a structure in which the cone paper is fixed to a bobbin carrying the voice coil with an adhesive.
The speaker described in. 4. A first assembly and a second assembly are assembled and formed in advance, and after aligning the positioning means of the first assembly and the positioning means of the second assembly, the cone paper and the voice coil are connected. The method of manufacturing a speaker according to claim 1, wherein the speaker is connected.