JP3002254U - Speaker frame - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the strength of a thin speaker frame. [Structure] A flat step portion 5 for mounting a damper has a slope portion 6
In the speaker frame 1 formed midway, a slightly wide concave reinforcing rib 8 is formed from the bottom side of the speaker frame 1 to the step portion 5 and the outer peripheral portion. Since a concave portion is formed on the front surface of the step portion 5 by the reinforcing rib 8 and the outer peripheral portion of the damper 4 is difficult to be attached securely, a flat plate-shaped ring 9 is provided on the front surface of the step portion 5, and the outer peripheral portion of the damper is attached to the ring 9. I tried to install it.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a frame of a speaker which is an audio device.

[0002]

[Prior art]

 A general speaker frame has a shape as shown in FIG. That is, reference numeral 1 in the drawing is a speaker frame, and a flat step portion 5 is provided on a part of a slope portion 6 of the speaker frame 1, and the diaphragm 10 and the voice coil 11 are supported by using the step portion 5. The outer peripheral portion of the damper 4 is fixed with an adhesive.

When the strength of the speaker frame 1 is analyzed by computer simulation using the finite element method, it is found that stress or strain is concentrated on the step portion 5 of the speaker frame 1 and the strength is not sufficient. did.

That is, in the conventional speaker frame 1 having the above-described shape, when the speaker is accidentally dropped, for example, the step portion 5 exceeds the strength limit of the speaker frame 1 against a force from above or below the speaker frame 1. There was a problem that the peripheral part of was easily deformed.

Further, although it is not of a type in which a step portion for mounting a damper is formed in the middle of the slope portion of the speaker frame, as shown in Japanese Utility Model Laid-Open No. 62-164492, a diaphragm is used to increase the strength. There is a reinforcing rib with a substantially corrugated cross section that extends from the center of the frame toward the outer periphery on almost the entire facing surface of the frame that faces the frame. There was a problem that it was weak against the force from above.

[0006]

[Problems to be solved by the device]

 The present invention has been proposed in view of the above circumstances, and an object thereof is to provide a speaker frame having sufficient strength against a force from above or below.

[0007]

[Means for Solving the Problems]

 This invention is a speaker frame in which a step portion 5 for mounting a damper is formed in the middle of a slope portion 6, except for a window hole 7 portion, which is provided at least in the portion of the step portion 5 and protrudes rearward. The above object is achieved by having a reinforcing rib 8 and providing a flat plate-shaped ring 9 on the front surface of the step portion 5.

[0008]

[Action]

 In the present invention, although the step portion 5 for mounting the damper is formed in the middle of the slope portion 6, except for the window hole 7, the slope portion 6 extends from the bottom side of the speaker frame 1 through the step portion 5 to the outer periphery. The reinforcing ribs 8 are formed in a concave shape that is recessed in the rear direction of the frame, and the reinforcing ribs 8 are provided in the damper step portion where stress concentrates against the force from the vertical direction. As a result, the strength is increased and deformation can be prevented.

Further, since the reinforcing rib 8 runs also on the step portion 5, the fact that the function as the damper attaching portion is impaired is eliminated by providing the flat ring 9.

[0010]

【Example】

 FIG. 1 is a schematic vertical sectional view of a speaker incorporating a frame according to an embodiment of the present invention, and FIG. 2 is a bottom view of the speaker frame of the present invention.

Reference numeral 1 in these drawings shows a speaker frame according to the present invention. The speaker frame 1 has a substantially circular shape and is formed by drawing a metal plate. An opening 3 for arranging the center pole 2 of the magnetic circuit is formed at the bottom thereof, and a flat step 5 for mounting the outer peripheral portion of the damper 4 is provided at a position slightly above the bottom. Has been formed.

A window hole 7 is formed between the step portion 5 and the outer peripheral portion of the speaker frame 1. Reference numeral 8 denotes a reinforcing rib which is concave when viewed from the front and is slightly wider. The reinforcing rib 8 projects toward the rear side of the speaker frame 1, and from the bottom side of the speaker frame 1, the step 5 and the speaker. It is formed in a strip shape along the radial direction on the slope portion 6 portion extending radially except the window 7 to the outer peripheral portion of the frame 1. In the example shown in FIG. 2, the reinforcing rib 8 is formed in a cross shape, but it can be increased or decreased depending on the size and thickness of the speaker frame 1.

Therefore, when the damper 4 is mounted, since the reinforcing ribs 8 are provided on the step portion 5 and there is a recess, a flat plate-shaped ring 9 is provided on the front surface of the step portion 5 by an adhesive or welding to flatten it. The outer peripheral portion of the damper 4 supporting the voice coil 11 provided on the neck portion of the diaphragm 10 is fixed to the surface thereof by an adhesive. The ring 9 is made of metal or resin.

As is well known, the cylindrical voice coil 11 is arranged in the magnetic gap on the outer circumference of the cylindrical center pole 2, and the flange portion on the outer circumference of the speaker frame 1 is provided on the outer circumference of the diaphragm 10 with the gasket 12 interposed therebetween. Fixed to. Reference numeral 13 in FIG. 2 is a screw hole for mounting the speaker, which is formed on the outer end portion of the reinforcing rib 8.

[0015]

[Effect of device]

 As described above, according to the present invention, since the concave reinforcing ribs 8 are formed on the slope portion 6 portion extending radially from the bottom side of the speaker frame 1 to the outer peripheral portion, the force from below or above the speaker frame 1 is formed. Also, it has sufficient strength to prevent deformation due to dropping or the like.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view of a speaker constructed by using a frame according to an embodiment of the present invention.

FIG. 2 is a bottom view of the speaker frame of the present invention.

FIG. 3 is a schematic vertical sectional view of a conventional example.

[Explanation of symbols]

 1 Speaker Frame 2 Center Pole 4 Damper 5 Step 6 Slope 7 Window Hole 8 Reinforcing Rib 9 Ring 10 Vibration Plate 11 Voice Coil 12 Gasket

Claims (1)

[Scope of utility model registration request] 1. A speaker frame in which a step portion (5) for mounting a damper is formed in the middle of a slope portion (6),
Except for the window hole (7), it has a reinforcing rib (8) provided in at least the step portion (5) and protruding in the back direction, and has a flat plate shape on the front surface of the step portion (5). A speaker frame having a ring (9).