JP3531257B2 - Speaker manufacturing method - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a speaker used when assembling speakers used in various audio equipment. 2. Description of the Related Art A conventional method of manufacturing a speaker of this type will be described with reference to the drawings. FIGS. 6 (a) and 6 (b) are partially cutaway perspective views showing the structure of a conventional speaker and an arrow A in FIG. 6 (a).
FIG. 7 is an exploded perspective view of a magnetic circuit and a frame of the speaker, FIG. 8 is an exploded perspective view of a vibration system of the speaker, and FIG. 9 is a plan view of a vibration system assembly of the speaker. It is. In a conventional speaker having such a structure, first, as shown in FIGS. 8 and 9, a lead wire 2 is provided at the center of a diaphragm 1 obtained by heating and molding a synthetic resin film into a predetermined shape.
The voice coil 3 from which a and 2b are drawn out is bonded by bonding, and the lead wires 2a and 2b are drawn out to the upper surface of the diaphragm 1 to prevent disconnection caused by the application of tension during vibration as a speaker. The vibrating system components are assembled by forming the slack 4 so that the slack 4 is formed, fixing the vibrating plate 1 on the upper surface of the vibrating plate 1 with an adhesive 5 and pulling the vibrating plate 1 out. Next, the vibration system component constructed as described above is assembled into a frame 10 in which a magnetic circuit 9 composed of a yoke 8 in which a magnet 6 and a top plate 7 are assembled in the center is connected as shown in FIG. The speaker is assembled by bonding the lead wires 2a and 2b to the terminal plate 11 attached to the rear surface along the notch 13 provided on the peripheral edge of the frame 10, and as described above. The speaker assembled as described above is configured as shown in FIG. 6 (a), and the lead wires 2a and 2b are
As shown in FIG. 2B, the diaphragm 1 is coupled with the diaphragm 1 via the adhesive 5 using an adhesive escape portion 15 provided on the frame 10. However, in the above-mentioned conventional manufacturing method, after the voice coil 3 is bonded to the center of the diaphragm 1 by bonding, the lead wires 2a, 2b are manually operated using a jig. Is pulled out along the upper surface of the vibration plate 1, and is partially provided with a slack 4, and is fixed to the vibration plate 1 with an adhesive 5 to form a vibration system component, and this vibration system component is connected to a magnetic circuit 9. Since the lead wires 2a and 2b are manually connected to the terminal plate 11 connected to the frame 10 by connecting the leading ends of the lead wires 2a and 2b by hand, the degree of the slack 4 of the lead wires 2a and 2b is not constant. Depending on the use conditions, the vibration of the diaphragm 1 may cause the lead wires 2a and 2b to be disconnected or cause chattering, and may cause air leakage from the adhesive 5 and the adhesive escape portion 15 provided on the frame 10. There is a problem that sealing with an adhesive is necessary in order to prevent the characteristic failure due to this. [0007] Such operations are performed by the lead wires 2a, 2a.
Since b is often a very fine wire, it is extremely difficult to achieve automation, and this has been a major obstacle in the production process of this type of speaker. SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of manufacturing a speaker which eliminates the above-mentioned drawbacks of the prior art and can obtain a speaker which is excellent in productivity and stable in quality. In order to solve the above-mentioned problems, a method of manufacturing a speaker according to the present invention comprises the steps of: holding a center portion of a voice coil and abutting the center portion of a diaphragm; With the lead wire pulled out from the diaphragm laid on the diaphragm in a state of having a slack, it is pulled out in the outer peripheral direction and held, and in this state, the voice coil is connected to the diaphragm using an instant curing adhesive, Next, the outer periphery of the diaphragm to which the voice coil is connected is connected to the periphery of the frame to which the magnetic circuit is connected together with the lead wire with a slack, using an instant curing adhesive, and at the same time, the voice coil is connected. This is a manufacturing method in which a speaker is assembled by being fitted into a magnetic gap formed in the magnetic circuit. [0010] By adopting such a manufacturing method, it is not necessary to join the diaphragm and the lead wire of the voice coil in the previous process, and continuous production can be performed. And the occurrence of abnormal sounds such as chattering can be eliminated. A method for manufacturing a speaker according to an embodiment of the present invention will be described below with reference to the drawings. FIGS. 1A and 1B are partially cutaway perspective views showing the structure of a speaker manufactured according to the embodiment and FIGS.
2A to 5 are plan views for explaining a manufacturing method centering on a vibration system component, and show components having the same configuration as that of a conventional example. Have the same reference numerals. First, as shown in FIG. 2, the center of the voice coil 3 wound by the center receiving jig 12 is held, and at the same time, the voice coil leads 2a, 2b are held by the lead wire jig 14. Next, the held lead wires 2a, 2b
As shown in FIG. 3, the automatic slackening pin 16 is operated to automatically provide the slack 4. Next, as shown in FIG. 4, the voice coil 3 having the lead wires 2a and 2b with a slack 4 is provided at the center of the diaphragm 1 coated with an instant curing adhesive 18 such as an ultraviolet curing type. After bonding, the above voice coil lead wire 2
a and 2b are connected to the lead wire chuck jig 14 as shown in FIG.
The slack 4 re-gripped by the re-gripping chuck 17 set above is held, and the vibration system components are assembled in this manner. Next, as shown in FIGS. 1 (a) and 1 (b), a magnetic circuit 9 comprising a yoke 8 in which a magnet 6 and a top plate 7 are incorporated is combined with the vibration system components assembled as described above. The outer peripheral portion of the diaphragm 1 and the voice coil are provided with the slack 4 of the voice coil lead wires 2a and 2b provided in a state where the instantaneous hardening adhesive 18 such as hot melt is applied to the peripheral portion of the joined frame 10A. The lead wires 2a and 2b are simultaneously adhered to the peripheral portion of the frame 10A,
Thereafter, the notch 13 provided in a part of the frame 10A is provided.
The speaker is assembled by pulling out the voice coil lead wires 2a and 2b from A and connecting them to the terminal plate 11 joined to the back surface of the frame 10A. By adopting such a manufacturing method, the slack 4 provided in the voice coil lead wires 2a and 2b and the wiring are stabilized, and no abnormal sound such as disconnection failure and chattering is generated, thereby providing high reliability. It will be. Further, the outer peripheral portion of the diaphragm 1 and the voice coil lead wires 2a, 2b are adhered to the peripheral portion of the frame 10A by using the instant curing type adhesive 18, so that the frame 10 required for the conventional product is formed. The adhesive escape portion 15 becomes unnecessary, and air leakage is eliminated, so that the characteristics are stabilized. As described above, according to the method of manufacturing a speaker of the present invention, it is easy to stabilize the slack and the wiring of the voice coil lead wire, thereby causing the disconnection failure and the chattering of the voice coil lead wire. It is possible to prevent the occurrence of sticking, to greatly improve the quality, to facilitate automation, and to increase the industrial value.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 (a) is a partially cutaway perspective view showing a speaker obtained by a method for manufacturing a speaker according to an embodiment of the present invention, and FIG. 1 (a) is a direction of an arrow A in FIG. 1 (a). FIG. 2 is a plan view showing a voice coil holding state according to the embodiment. FIG. 3 is a plan view showing a slackened state of the voice coil lead wire. FIG. 4 is a diaphragm and a voice coil. FIG. 5 is a plan view showing a state in which lead wires are held when the diaphragm and the voice coil are bonded. FIG. 6A is obtained by a conventional speaker manufacturing method. FIG. 6B is a partially cutaway perspective view showing a speaker. FIG. 6B is an enlarged view of a main part viewed from the direction of arrow A in FIG. 6A. FIG. 7 is an exploded perspective view showing the configuration of a magnetic circuit. Perspective view [Figure 9] Plan view of diaphragm with voice coil connected DESCRIPTION OF SYMBOLS 1 Vibration plates 2a, 2b Voice coil lead wire 3 Voice coil 4 Slack 6 Magnet 7 Top plate 8 Yoke 9 Magnetic circuit 10A Frame 11 Terminal plate 12 Center receiving jig 13A Notch 14 Lead wire chuck jig 16 Lead wire automatic slackening pin 17 Grab change chuck 18 Instant curing adhesive

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Claims (1)

(57) [Claim 1] A voice coil formed by winding a wire is held in contact with a central portion of a diaphragm while holding a central portion thereof.
A pair of lead wires pulled out from the voice coil are held along the diaphragm in the outer circumferential direction of the diaphragm with the amount of slack corresponding to the amplitude of the diaphragm being held, and in this state, instantaneous curing is performed. The voice coil is connected to the center of the diaphragm using a mold adhesive, and then the outer peripheral portion of the diaphragm connected to the center of the voice coil is provided with a pair of lead wires having a slack in a magnetic circuit. A speaker which is attached to the periphery of the frame to which it is coupled using an instant-curing adhesive, and at the same time, the voice coil is fitted without eccentricity into a magnetic gap formed in the magnetic circuit to assemble the speaker. Manufacturing method.