JP3052439B2 - Speaker manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to relates to a manufacturing method of the speaker used in various acoustic devices.

[0002]

2. Description of the Related Art A conventional speaker will be described below with reference to the drawings. FIG. 7 is a cross-sectional view showing the configuration of a conventional loudspeaker. Make up the circuit. A frame 10 is coupled to the magnetic circuit, and a voice coil 4
The voice coil 4 is fitted into the magnetic gap 12, and the inner peripheral portion of the damper 5 whose peripheral edge is fixed to the frame 10 is connected to the voice coil 4. I support it. Also,
Both ends of the winding of the voice coil 4 are connected to a terminal 7 connected to a frame 10 via a gold wire 6. Further, the dust gap 9 is fixed to the center of the diaphragm 8 so that dust and the like do not enter the magnetic gap 12.

[0003] A conventional method for manufacturing a speaker will be described below. As shown in FIG. 8, the terminal 7 is joined by caulking or the like to a frame 10 in which the upper plate 2 is joined by bonding or welding, and the magnet 1 and the lower plate 3 are joined to the lower surface of the upper plate 2 by adhesion. The magnetic circuit in which No. 12 was formed was assembled.

Further, as shown in FIG. 9, an assembled product in which the voice coil 4 and the damper 5 are previously bonded to each other by using the gauge 11 is bonded to the magnetic circuit with the gauge 11 inserted into the inner peripheral portion of the voice coil 4. Magnetic gap 1
2, the voice coil 4 is fitted into the frame 2, and the peripheral edge of the damper 5 is adhered and fixed to the frame 10.

After that, the diaphragm 8 described with reference to FIG. 7 is connected to the voice coil 4 using an adhesive, and
0, and after drying, the gauge 11 is pulled out, a dust cap 9 is adhered to the center of the diaphragm 8, and the gold wire 6 connected to both ends of the winding of the voice coil 4 is connected to the terminal 7.
And was assembled.

[0006]

However, in the above-mentioned conventional structure, a frame having various shapes and dimensions and a magnetic circuit must be connected in an initial stage of an assembling process, and a drying process is performed in this state. In order to allow the water to pass through, equipment such as a dryer is large and expensive, and a large production area is required.

Further, there is another problem in that the assembly process is complicated and the structure is such that manual work and mechanical work are alternately combined, so that mechanization is difficult and cost competitiveness is low.

[0008] The present invention is to solve the above problems,
An object of the present invention is to provide a speaker capable of facilitating assembly and streamlining production, and a method of manufacturing the speaker.

[0009]

Manufacturing method of the speaker according to the present invention in order to solve the above object, according to an aspect of the magnetic circuit assembly to form a magnetic gap on the upper surface, the inner diameter of the voice coil
Fitting part of frame and voice coil guide part for guiding
Jig with a frame guide that guides
With the voice coil attached to the center of the diaphragm with the frame and the frame attached to the periphery of the frame
Press-fitted to the fitting portion provided at the center of the bottom of the upper Symbol vibrating system assembly the assembled vibration system assembly to the outer peripheral portion of the magnetic gap
And insert the voice coil into the magnetic gap
Are used to form a speaker.

[0010]

According to this structure, the magnetic circuit assembly and the vibration system assembly, which are the other components, can be divided and assembled in independent steps, and then combined in the final step to obtain a finished speaker. As a result, the size of the equipment can be reduced and the assembling work can be mechanized.

[0011]

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings. The same parts as those of the conventional example are denoted by the same reference numerals.

FIG. 1 is a cross-sectional view showing the configuration of a speaker according to the present invention. A ring-shaped upper plate 2 and a lower plate 3 having a center pole are joined by an adhesive or the like so as to sandwich a ring-shaped magnet 1 so as to be magnetic. A magnetic circuit having a gap 12 is formed. This state is shown in FIG. 2B, and this assembly is called a magnetic circuit assembly.

In FIG. 1, reference numeral 13 denotes a frame. At the center of the frame 13, a fitting portion 14 which is press-fitted to the inner peripheral portion of the upper plate 2, which is the outer peripheral portion of the magnetic gap of the magnetic circuit assembly. The fitting portion 14 is subjected to a burring process in order to secure dimensional accuracy at the time of fitting.

A peripheral portion of the diaphragm 8 having the voice coil 4 coupled to the center thereof is fixed to a peripheral portion of the frame 13.
The inner peripheral portion of the damper 5 whose peripheral edge is fixed to the frame 13 is connected to the voice coil 4 to support the voice coil 4 and fit the voice coil 4 into the magnetic gap 12.

Further, a gold wire 6 is connected to both ends of the winding of the voice coil 4, and the other end of the gold wire 6 is connected to a terminal 7 connected to a frame 13. Further, a dust cap 9 is fixed to the center of the diaphragm 8 so that dust or the like does not enter the magnetic gap 12.

As shown in FIG. 2A, the frame 13 and the vibration system components thus constructed are separated from the above-described magnetic circuit assembly and assembled independently, and this assembly is assembled. It is called a vibration system assembly.

As shown in FIG. 3, the vibration system assembly includes a voice coil guide 15a for guiding the inner diameter of the voice coil 4 and a frame guide 15b for guiding the fitting portion 14 of the frame 13. above the jig 15
With the voice coil 4 and the frame 13 attached,
The plate 8 and the like are fixed and assembled.

As described above, the magnetic circuit assembly and the vibration system assembly are independently assembled, and the fitting portion 14 provided at the center of the frame 13 is pressed into the inner peripheral portion of the upper plate 2 of the magnetic circuit assembly. By fitting and applying an adhesive to the close contact surface between the frame 13 and the upper plate 2, it becomes possible to obtain a finished speaker by joining, and a large production area is not required unlike the conventional case. It is possible to easily assemble the speaker without using advanced mechanical equipment, and it is possible to streamline production.

Embodiment 2 Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a cross-sectional view showing the configuration of a speaker according to a second embodiment of the present invention, in which a lower plate 1 having a ring-shaped upper plate 17 and a center pole so as to sandwich a ring-shaped magnet 16 therebetween.
8 are bonded by bonding or the like to form a magnetic circuit in which a magnetic gap 19 is formed.

FIG. 5B shows this state, and this assembly is called a magnetic circuit assembly. In FIG. 4, reference numeral 20 denotes a frame. At the center of the frame 20, there is formed a fitting portion 21 which is press-fitted to the inner peripheral portion of the upper plate 17 of the magnetic circuit assembly. Burring is applied to ensure dimensional accuracy during fitting. On the inner peripheral side of the upper surface of the frame 20, a peripheral portion of a dome-shaped diaphragm 23 having a voice coil 22 coupled to the center thereof is fixed, and the voice coil 22 is
It is embedded in.

As shown in FIG. 5 (a), the frame 20 and the vibration system components are assembled separately from the magnetic circuit assembly as described above, and the assembly is vibrated. It is called a system assembly.

As shown in FIG. 6, the assembly of the vibration system assembly includes a voice coil guide portion 24a for guiding the inner diameter of the voice coil 22 and a frame guide portion 24b for guiding the fitting portion 21 of the frame 20. The assembly is performed by a jig 24.

As described above, the magnetic circuit assembly and the vibration system assembly are independently assembled, and the fitting portion 21 provided at the center of the frame 20 is attached to the upper plate 17 of the magnetic circuit assembly.
Of the frame 20 and the upper plate 17 by applying an adhesive to the inner surface of the frame 20 to apply the adhesive to the frame 20 and the upper plate 17, thereby obtaining a finished speaker product.

In this embodiment, a dome-type tweeter is shown. This dome-type tweeter has a narrower magnetic gap 19 than a general cone-type loudspeaker. The positioning of the diaphragm 22 is performed after positioning the diaphragm and the voice coil, then positioning the diaphragm and the tweeter ring, and positioning the tweeter ring and the magnetic gap. However, in the case of the present embodiment, the use of the jig 24 shown in FIG. 6 not only allows the voice coil 22 to be positioned at one time, but also improves the assembly accuracy and stabilizes the quality. It is also possible to achieve.

Further, as in the case of the first embodiment, the speaker can be easily assembled, and the production can be rationalized.

[0026]

[Effect of the Invention A method of manufacturing a speaker according to the present invention as described above, a magnetic circuit assembly speaker is divided into two blocks of the vibration system assembly is other parts, and,
By constructing each block independently, it is possible to easily assemble the speaker without the need for a large production area and advanced mechanical equipment as before, and to streamline production. Can be.

Further, it is possible to accurately position the voice coil to be fitted in the magnetic gap,
Quality can be stabilized.

Also, by standardizing the magnetic circuit assembly and changing the combination of the vibration system assembly including the frame and the vibration system components, it is possible to achieve standardization while responding to various needs. Can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a configuration of a speaker according to an embodiment of the present invention.

FIG. 2A is a sectional view showing a vibration system assembly according to the embodiment; FIG. 2B is a sectional view showing a magnetic circuit assembly according to the embodiment;

FIG. 3 is a sectional view showing an assembled state of the vibration system assembly according to the embodiment;

FIG. 4 is a sectional view showing a configuration of a speaker according to a second embodiment of the present invention.

5A is a sectional view showing a vibration system assembly according to the second embodiment; FIG. 5B is a sectional view showing a magnetic circuit assembly according to the second embodiment;

FIG. 6 is a sectional view showing an assembled state of the vibration system assembly according to the second embodiment.

FIG. 7 is a sectional view showing a configuration of a conventional speaker.

FIG. 8 is a sectional view showing a state in which a frame is coupled to a magnetic circuit of a conventional speaker.

FIG. 9 is a sectional view showing a state in which the voice coil and the damper are coupled to FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnet 2 Upper plate 3 Lower plate 4 Voice coil 5 Damper 6 Gold thread wire 7 Terminal 8 Diaphragm 9 Dust cap 12 Magnetic gap 13 Frame 14 Fitting part

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04R 9/02 101 H04R 31/00

Claims (1)

(57) [Claims] 1. A magnetic circuit assembly assembled to form a magnetic gap on the top surface, gas inside diameter of the voice coil
Guide the fitting between the voice coil guide and the frame
Voice coil on jig with frame guide
And wearing the frame provided at the central portion of the bottom surface of the upper Symbol vibrating system assembly the vibration system assembly assembled by fixing the peripheral portion of the frame peripheral portion of the diaphragm that is bonded to the central portion of the voice coil while press-fitting the fitting portion on the outer periphery of the magnetic gap, snaps Andes the voice coil in the magnetic gap
A method for manufacturing a speaker that forms a speaker .