JPS6036958Y2 - speaker - Google Patents

Description

[Detailed Description of the Invention] The present invention attempts to provide a speaker that can sufficiently withstand large input amplitudes by improving the damper.

Generally, a speaker is constructed as shown in FIG.

That is, a frame 6 is connected to a magnetic circuit 5 constituted by a plate 2 having a center pole 1, a ring-shaped magnet 3, and a ring-shaped upper plate 4, and a diaphragm is attached to the periphery of the frame 6 together with a gasket 7. A voice coil 9 is connected to the center of the diaphragm 8, the middle part 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 5. It was fitted into the magnetic gap 11 of the diaphragm 8 without eccentricity, and a dust cap 12 was attached to the upper center surface of the diaphragm 8.

Recently, there has been a trend toward higher inputs in such speakers, and the support system that can withstand large amplitudes has become an important factor.In particular, when the damper 10 is stiff at instantaneous large inputs, the inner circumference near the voice coil 9 There was a risk that the corrugations in the parts would cause abnormal vibrations, resulting in abnormal noises during large inputs and large amplitudes.

In other words, since the conventional damper 10 was constructed with concentric corrugations as shown in Fig. 2, the corrugations could not extend as much when the amplitude was large, and the force applied to the innermost circumference of the corrugations The peaks and valleys of the corrugation caused reverse vibrations, producing abnormal noise, as the normal state indicated by the sharpest broken line was broken and abnormal resonance occurred.

Especially when a large input is applied momentarily, abnormal noise is likely to occur.

The present invention aims to eliminate the above-mentioned conventional drawbacks and to provide a speaker that does not generate abnormal noise even when the amplitude is large by improving the damper.

Embodiments of the present invention will be described below with reference to FIGS. 3 and 4.

Note that the overall configuration of the speaker is the same as that shown in FIG. 1, and only the damper 10 will be described here.

The damper 10 has a bottom shape made of cloth impregnated with synthetic resin, has a part 13 attached to the frame 6 at the outer peripheral edge, and a coupling part 14 to the cylindrical voice coil 9 at the inner peripheral edge. A concentric corrugation portion 15 is formed extending from the attachment portion 13 to the inner circumferential edge, and a radial wave-shaped uneven strip portion 16 is provided between the corrugation portion 15 and the joint portion 14.

In this way, the radial uneven stripes 16 are provided between the coupling portion 14 to the voice coil 9 and the concentric corrugation portion 15 in order to improve the strength, even when the amplitude is large as shown in FIG. The shape shown by the broken line can be maintained and the amplitude can be linear, and the peaks and valleys of the corrugated portion 15 will not cause reverse vibrations and generate abnormal noise.

As described above, the speaker of the present invention does not cause abnormal sound due to abnormal deformation of the inner peripheral edge of the damper even when a large amplitude is applied to the vibration system components due to the application of a large input, and there is little distortion in terms of characteristics. It has the advantage of providing excellent sound quality and is of great practical value.

[Brief explanation of the drawing]

Fig. 1 is a half-sectional view showing a general speaker, Fig. 2 is an explanatory diagram showing the operation of a damper in a conventional speaker, and Fig. 3 is a perspective view of the main parts of a damper in an embodiment of the speaker of the present invention. , FIG. 4 is a half sectional view of the same. 5... Magnetic circuit, 6... Frame, 8
...Expansion plate, 9...Voice coil, 10...
... Damper, 11 ... Magnetic gap, 1
3... pasting part, 14... joining part, 15
...corrugation part, 16, curved, uneven stripe part.

Claims (1)

[Scope of utility model registration request] The edge part of a diaphragm is fixed to the peripheral edge of the frame connected to the magnetic circuit, a voice coil that fits into the magnetic gap of the magnetic circuit is connected to this diaphragm, and the middle part of this voice coil is held by a damper. In this speaker, a concentric corrugation part is provided as the damper inside the attachment part of the outer periphery, a radial uneven strip is provided inside this corrugation, and a voice coil is provided inside the uneven strip. A speaker that uses a connector.