JPS6035359Y2 - speaker - Google Patents

Description

[Detailed description of the invention] The present invention relates to a speaker in which a diaphragm and a dust cap are integrally formed, and the assembly of the voice coil to the diaphragm has been improved to achieve stable performance and excellent high-frequency characteristics. This is what we are trying to provide.

In general, speakers were constructed as shown in FIG.

That is, a frame 6 is connected to a magnetic circuit 5 constructed by incorporating a ring-shaped magnet 3 and a ring-shaped upper plate 4 on a plate 2 having a center pole 1, and a gasket 7 and a gasket 7 are attached to the periphery of this frame 6. The periphery of the diaphragm 8 is bonded with adhesive, the voice coil 9 is bonded to the center of the diaphragm 8, the middle portion of the voice coil 9 is held by a damper 10, and the lower part of the voice coil 9 is connected to the magnetic circuit. The diaphragm 8 was fitted into the magnetic gap 11 of the diaphragm 8 without eccentricity, and a dust cap 12 was provided on the upper center surface of the diaphragm 8.

Among such speakers, speakers in which the diaphragm 8 and the dust cap 12 are integrated in order to extend the high frequency range have also been put into practical use.

In the speaker in which the diaphragm 8 and the dust cap 12 are integrated, as shown in FIGS. 2 and 3, after the voice coil 9 is assembled into the magnetic gap 11 of the magnetic circuit 5 without eccentricity, Adhesive 13 to the upper end of the voice coil 9
A diaphragm 8 having a dust cap 12 is assembled from above by coating the diaphragm 8 with a dust cap 12, and a voice coil 9 is coupled to the circumferential surface of the dust cap 12.

However, with this configuration, it is not possible to confirm whether or not the diaphragm 8 and the voice coil 9 are reliably bonded together, and furthermore, the vibration of the voice coil 9 is transmitted to the dust cap 12.
The shape is such that the high range is cut off because it is transmitted to the diaphragm 8 via the dust cap 12.
It was difficult to obtain excellent performance because of the phase difference with the outer diaphragm.

On the other hand, as shown in Fig. 4, it has been considered that the voice coil 9 is adhesively bonded to the diaphragm 8 side, but in this case as well, it is not possible to check the adhesion status, and furthermore, the dust cap 12 has a high-cut state. The drawback was that the high frequency range could not be sufficiently extended due to the transmission of vibrations.

The present invention eliminates the above-mentioned drawbacks of the prior art.

Embodiments of the present invention will be described below with reference to FIGS. 5 to 8.

The overall structure of the speaker is the same as that shown in FIG. 1, so only the features of the present invention will be described here.

That is, the coil bobbin 9a of the voice coil 9 is attached to the flat portion 14 formed at the boundary between the diaphragm 8 and the dust cap 12.
An arcuate slit 15 into which the protrusion 9b provided at the upper end is fitted is provided, the protrusion 9b is fitted into the slit 15, and an adhesive 13 is applied to the upper surface of the flat part 14 to form the diaphragm 8.
and the voice coil 9 are combined.

With such a configuration, the adhesive bonding between the diaphragm 8 and the voice coil 9 can be completely performed and visually confirmed, and the voice coil 9 is bonded between the diaphragm 8 and the dust cap 12. flat part 1
4 is filled with the adhesive 13, the vibration of the voice coil 9 is not damped, and the diaphragm 8 and the dust cap 12
can also be transmitted to extend the high range.

As the speaker of the present invention is constructed as described above, the diaphragm and dust cap are integrated into one body, making it possible to fully demonstrate its characteristics, as well as confirming the state of adhesive bonding with the voice coil, ensuring stable performance. It can provide excellent high frequencies,
It has great practical value.

[Brief explanation of the drawing]

Figure 1 is a half-sectional view showing a general speaker, Figure 2 is a sectional view of the main parts of a conventional speaker, Figure 3 is a sectional view of the main parts showing the same assembly process, and Figure 4 is another conventional speaker. FIG. 5 is a cross-sectional view of the main parts showing an embodiment of the speaker of the present invention, FIG. 6 is a cross-sectional view of the central part of the diaphragm of the speaker, and FIG. 7 is the same. The bottom view and FIG. 8 are perspective views of the voice coil used in the speaker. 5... Magnetic circuit, 6... Frame, 8
...Diaphragm, 9...Voice coil, 9
a... Coil bobbin, 9b... Protrusion, 10... Damper, 11... Magnetic gap, 12... Dust cap, 13...・・・
...Adhesive, 14...Flat part, 15...
··slit.

Claims (1)

[Scope of utility model registration request] A diaphragm with a dust cap integrally formed in the center is incorporated into the peripheral surface of the frame connected to the magnetic circuit, and a voice coil that fits into the magnetic gap of the magnetic circuit is bonded to the center of the diaphragm with adhesive. In the speaker, a flat part is provided at the boundary between the diaphragm and the dust cap, a slit is provided in the flat part into which the protruding part formed at the upper end of the coil bobbin of the voice coil is fitted, and the protruding part protruding from the slit is flattened. A speaker that is connected to the diaphragm and dust cap using adhesive applied to the top surface.