JP2599585Y2 - Speaker - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker used for various audio equipment.

[0002]

2. Description of the Related Art Hitherto, this type of speaker has been configured as shown in FIG. That is, a frame 6 is coupled to an upper plate 4 of a magnetic circuit 5 configured by incorporating a ring-shaped upper plate 4 identical to a ring-shaped magnet 3 on a lower plate 2 having a center pole 1. A diaphragm 8 is bonded together with a gasket 7 to a voice coil 10, and a voice coil 10 fitted into the magnetic gap 9 formed by the magnetic circuit 5 without eccentricity is coupled to the center of the diaphragm 8. The bobbin middle part is held by the damper 11 and the diaphragm 8
The dust cap 12 was incorporated into the upper surface of the central portion of the.

In this type of conventional loudspeaker, a voice coil 10, a damper 11, and a diaphragm 8 are connected, and then assembled into a magnetic circuit 5 to which a frame 6 is connected by using a jig.
After adhering the damper 11 and the diaphragm 8 to the frame 6, the jig is pulled out and the dust cap 12 is joined to assemble.

[0004]

However, in the above-mentioned conventional configuration, the voice coil 10 and the diaphragm 8 are connected by an adhesive, and after the dust cap 12 is dried, the diaphragm 8 and the dust cap 12 are connected by an adhesive. Equipment and processes for applying and drying the adhesive are required.

[0005] In addition, an integrated part of the dust cap 12 and the diaphragm 8 conventionally used for a micro speaker or the like requires a process of applying an adhesive to one of the voice coil 10 and bonding it to the voice coil 10. There is a problem that the force is applied and the voice coil 10 is distorted. In addition, there are many defects in frequency characteristics due to adhesion detachment or incomplete adhesion, so that the magnetic gap size needs to be increased, and there is a disadvantage that it can be used only for a small speaker having a small weight. .

The present invention solves the above-mentioned conventional problems, and can be used for small and medium-sized speakers with a simple structure. The number of parts, time,
An object of the present invention is to provide a speaker in which the number of defects is reduced by processes and bonding.

[0007]

The loudspeaker according to the present invention has a structure in which a slit is provided in a diaphragm and a dust cap integrated component, a projection at the upper end of a bobbin is inserted into the slit, and bonded from above.

[0008]

[Function] With this configuration, the diaphragm can be used for small and medium-sized speakers.
A dust cap integrated part can be used, and it is possible to reduce the application of adhesive for bonding the dust cap, drying equipment, processes, gap defects and frequency characteristics defects.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of the speaker of the present invention.
FIG. 2 is a top view of a dust cap-integrated diaphragm in which several slits are provided circumferentially at a joint with the voice coil bobbin used in FIG. 3 and 4 are perspective views showing the appearance of the voice coil processed so as to fit into the slit portion of FIG.

As shown in FIG. 1, a magnetic circuit 17 in which an upper plate 16 on the same ring as a ring magnet is laminated on a lower plate 14 having a center pole 13
A frame 18 is connected to the upper plate 16 of the frame 18, and a peripheral portion of a diaphragm 20 having a gasket 19 and a dust cap continuously and integrally provided at the center is continuously bonded to the peripheral portion of the frame 18 by bonding. The voice coil 22 for vibrating is centered by a damper 23 having an intermediate portion bonded to the frame 18, and is connected to the diaphragm 20 so as to fit into the magnetic gap 21 of the magnetic circuit 17.

The voice coil 22 and the diaphragm 20 are connected to a dust cap 25 at the center of the diaphragm 20 shown in FIGS.
At the boundary of the above, several projections 26 provided at the upper end of the bobbin of the voice coil 22 in FIG. 3 are fitted into several slits 24 provided circumferentially, and are bonded together from above.
In the case where the shape of the protrusion 26 of the voice coil 22 is an inverted L-shape as shown in FIG. 4, the voice coil 22 is fitted into the slit 24 of the diaphragm 20 and then rotated to be mechanically coupled to each other. A bonding method can also be used.

As described above, the speaker of the present invention is constructed, and thus the diaphragm and the dust cap are integrated into one.
Adhesives, drying equipment and processes can be reduced.
Furthermore, the bonding between the diaphragm and the voice coil can be completely performed, quality defects such as detachment of the bonding and defective frequency characteristics can be eliminated, bonding reliability can be significantly improved, and gap defects can be reduced.

[Brief description of the drawings]

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

FIG. 2 is a top view of the diaphragm according to the embodiment.

FIG. 3 is a perspective view showing a voice coil according to the embodiment;

FIG. 4 is a perspective view showing another voice coil.

FIG. 5 is a half sectional view showing a conventional speaker.

[Explanation of symbols]

 Reference Signs List 14 Lower plate 15 Magnet 16 Upper plate 17 Magnetic circuit 16 Voice coil 18 Frame 19 Gasket 20 Integrated part of diaphragm and dust cap 22 Voice coil 23 Damper 24 Slit 25 Dust cap 26 Projection

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-215200 (JP, A) JP-A-4-129500 (JP, A) Japanese Utility Model Application Showa 57-163897 (JP, U) Japanese Utility Model Application Hei 4- 25398 (JP, U) Japanese Utility Model Showa 62-13097 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) H04R 9/00-9/10

Claims (1)

(57) [Scope of request for utility model registration] The method according to claim 1 Magnet and magnetic circuit constructed by sandwiching the upper plate and the lower plate, the central portion
While forming the dust cap continuously and integrally,
Several slits at the border with the dust cap
A vibration plate, protrusions to be bonded fit into the slit of the diaphragm is constituted by a voice coil Hamarikomu the magnetic gap of the magnetic circuit provided in the bobbin upper portion
The speaker was.