JPH0847087A - Speaker - Google Patents

Abstract

PURPOSE:To improve the reliability and workability for mounting by providing a through screw hole to the center of a magnetic circuit and coupling the magnetic circuit to the top surface of a support through the thread hole. CONSTITUTION:A yoke 1 and a magnet 2 form a magnetic circuit 4 with a magnetic gap 3. A through thread hole is provided to the middle of the yoke 1. The magnetic circuit 4 is coupled with the upper side of the projection of the supporter 6 whose section has a projection shape coupled with the center of a frame 7 with screw fastening and arranged to a front side of the speaker. When the speaker is mounted to a speaker mount member 12, the through thread hole is used to be fitted to the center of the speaker by a screw 13. Or the thread hole provided to the middle of the yoke 1 is not a throughhole but threaded from the upper and lower directions. Thus, deformation of an outer circumferential part of the frame 7 due to a tightening degree is prevented. Moreover, production of distortion and vibrating noise sound is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker used in various audio equipment, and more particularly to a reverse magnetic circuit type speaker in which a magnetic circuit is arranged on the front side of a diaphragm.

[0002]

2. Description of the Related Art A conventional speaker is mounted by a mounting method as shown in FIG. That is, car door 1
4, a mounting hole 14a is formed in the speaker 4, and several members 15 are fitted into the peripheral edge of the mounting hole 14a with the grill 17 fitted through the mounting screw hole 16a provided in the outer peripheral flange portion of the frame 16 of the speaker 19. (2-8
It was fixed by tightening the individual screws 18.

[0003]

However, in the above-described conventional speaker mounting method, the outer peripheral portion of the frame 16 is deformed due to the tightening strength of the screw 18 when mounting the speaker 19, and the distortion of the speaker 19 due to this deformation is caused. It has a problem that a flicker sound is generated.

The present invention eliminates such conventional drawbacks,
An object of the present invention is to provide a speaker with improved reliability and mounting workability.

[0005]

In order to solve the above problems, a speaker according to the present invention is a speaker in which a magnetic circuit is arranged and coupled on the front side of a diaphragm, which is generally called an inverse magnetic circuit type. It is configured such that a through screw hole is provided in the.

[0006]

With this configuration, the speaker can be screwed through the mounting member of the mounted portion by using the through screw hole provided in the center of the magnetic circuit coupled to the front surface side of the diaphragm. It is possible to prevent deformation, distortion, and flicker noise.

[0007]

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 front sectional view showing the structure of the speaker according to the embodiment. In FIG. 1, 1 is a pot type yoke having a center pole portion 1a and a through screw hole provided at the center thereof, and 2 is this. A ring-shaped magnet coupled to the upper part of the inner wall of the yoke 1, and using a rare earth magnet magnetized in the radial direction, a magnetic circuit 4 in which a magnetic gap 3 is formed by the yoke 1 and the magnet 2 is formed. There is.

Reference numeral 5 is a heat radiation fin provided with a plurality of projecting pieces 5a on its peripheral edge, and is fitted in the outer peripheral portion of the yoke 1. Reference numeral 6 is a supporter having a convex cross section, the magnetic circuit 4 is coupled to the upper surface of the convex portion by screwing, and the inner peripheral portion of the frame 7 is coupled to the lower flange portion by screwing. . Reference numeral 8 denotes a vibration plate, which has an outer peripheral portion joined to the peripheral portion of the frame 7 together with the gasket 9 and is fitted into the magnetic gap 3 without being eccentric.
And the voice coil 10 is supported by the damper 11.

In the thus constructed speaker of the present invention, the magnetic circuit 4 is arranged and coupled to the front side of the speaker, and a through screw hole is provided in the center of the yoke 1 so that the speaker can be used as a speaker. Mounting member 1
When mounting on the screw 2, use the through screw hole above to screw 1
Since the speaker is mounted at the center of the speaker by means of 3, the frame can be prevented from being deformed, and the mounting at a single point can reduce the number of steps.

In the above embodiment, the screw hole provided in the central portion of the yoke 1 is a through hole. However, the present invention is not limited to this, and may be a structure in which screw processing is applied from the vertical direction. It goes without saying that it is good.

[0012]

As described above, according to the speaker of the present invention, when the speaker is attached to the speaker mounting member, the deformation of the outer peripheral portion of the frame due to the tightening condition can be prevented by performing it through the central portion of the speaker. In addition to being possible, it is possible to prevent distortion and creaking noises and improve reliability.

Further, since the mounting can be carried out by one-point support, it is possible to obtain the cost reduction effect by reducing the man-hours.

[Brief description of drawings]

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

FIG. 2 is a perspective view for explaining a conventional speaker mounting method.

[Explanation of symbols]

 1 Yoke 1a Center Pole Part 2 Magnet 3 Magnetic Gap 4 Magnetic Circuit 5 Heat Dissipation Fin 5a Projecting Piece 6 Supporter 7 Frame 8 Diaphragm 9 Gasket 10 Voice Coil 11 Damper 12 Speaker Mounting Member 13 Screw

Claims (1)

[Claims] 1. A frame to which a supporter having a convex cross-section is connected at the center, a diaphragm having an outer peripheral portion connected to the peripheral edge of the frame, and a coil section to be arranged on the front side at the center of the diaphragm. A speaker comprising a magnetic circuit having a magnetic gap into which the voice coil coupled to is fitted and coupled to the upper surface of the supporter through a through screw hole provided at the center.