JPH0728797Y2 - Resin frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a resin frame in a speaker of an audio device.

(Prior Art) A speaker using a conventional resin frame, as shown in FIG. 3, includes magnetic circuits such as a center pole, a yoke, a magnet, and a plate in resin, and a resin case 10 on which the magnetic circuits are included. The frame 11 is integrally formed, and the peripheral portion of the vibration plate 12 of the vibration system arranged in the magnetic circuit is
It was fixed to the periphery of 11 together with the gasket 13 with an adhesive or the like.

This gasket keeps the airtightness of the speaker.
It is also necessary to absorb harmful vibrations from the vibration system when the speaker is attached to the housing surface.
As a means to provide this with a specific function, the actual exploitation 61-15
6394 and the Japanese Utility Model Laid-Open No. 62-171293 proposed by the applicant. That is, in the former case, the gasket is divided into two parts, the inner part and the outer part, and these two parts are connected by a thin portion so that the gasket can be attached to a curved frame. In the latter, a bridge is provided on the inner surface of the gasket, and a tweeter frame and an equalizer section are integrally molded in the center of the bridge to form a composite speaker.

(Problems to be Solved by the Invention) In the above-described speaker having the resin frame, since the frame and the gasket are separately made as individual parts, there are problems as described below. .

(1) Since they are separate parts, they are separately packed when the parts are transported, which increases the number of packing steps and the cost of packing materials.

(2) Separate packaging requires extra man-hours such as opening the speaker separately and checking the quantity in the manufacturing process of the speaker.

(3) Gasket sticking is likely to occur, resulting in defective products and poor yield.

(4) Since the parts are manufactured separately, the number of man-hours for manufacturing the parts is large and the cost is high.

The present invention has been made in view of the above problems, and an object thereof is to reduce packaging man-hours and manufacturing man-hours, prevent occurrence of sticking misalignment, etc. It is intended to provide a preferable speaker.

(Means for Solving the Problems) In order to achieve the above object, in the present invention, a gasket 3 or 5 is integrally formed on a peripheral edge of a frame 1 with a thin portion 2 interposed therebetween, and the thin portion 2 is bent. Then, the gasket 3 or 5 is fitted in the frame ring 1c of the frame 1 to fix the vibrating plate peripheral portion on the frame ring 1c.

(Function) Since the gasket is integrally formed on the peripheral edge of the resin frame of the speaker via the thin wall portion, the frame and the gasket become an integral part, and the thin wall portion positions the gasket. Therefore, the defect rate is reduced and a speaker can be formed with higher yield.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In FIG. 1, gaskets are provided at a plurality of positions on the periphery of the frame, and 1 is the frame. The frame 1 is made of synthetic resin, has a cylindrical bottom body 1a that encloses a magnetic circuit, and is formed by a portion of an inverted truncated cone 1b provided on the bottom body 1a. A ring-shaped frame ring 1c is provided on the upper part of the inverted truncated cone 1b.
A flange portion 1d is provided on the inner peripheral surface of, and the peripheral portion of the diaphragm is attached onto the flange portion 1d.

Gaskets 3 are provided at a plurality of locations on the outer peripheral surface of the frame ring 1c via thin portions 2. This gasket 3
Is a frame ring with a rectangular cross section and a curved shape
It is adapted to the curvature of 1c and is formed at least 1/4 or less of the circumference. The thin portion 2 is provided on the curved outer surface, is connected to the frame ring 1c, and the gasket 3 is housed in the frame ring 1c via the thin portion 2. The bottom body constituting these frames 1
The lathe 1a, the inverted truncated cone 1b, the frame ring 1c, and the thin portion 2 and the gasket 3 attached to the frame 1 are all integrally molded during resin molding.

FIG. 2 shows a circular gasket provided outside the peripheral edge of the frame. The frame 1 is similar to that shown in FIG. 1 and includes a bottom body 1a, an inverted truncated cone 1b, a frame ring 1c and a flange portion. It is composed of 1d. And frame ring
A thin portion 2 is provided on the outer peripheral edge portion of 1c, and a circular gasket 5 fitted in the frame ring 1c is provided on the thin portion 2. This gasket 5 has a thin portion 2
The thin wall portion 2 and the gasket 5 are integrally molded when the frame 1 is molded.

The resin frame configured as described above has the gasket 3
Or bend the thin part 2 by 5 respectively, and frame ring
All you have to do is to attach and stick in 1c, which allows (1) separate packaging, (2) man-hours for checking, etc., (3)
Problems such as sticking misalignment and (4) individual parts can be solved.

(Effect of the Invention) As described above, in the resin frame of the present invention, the gasket is integrally molded on the peripheral edge of the frame through the thin portion, so that the number of manufacturing steps such as checking the quantity when opening the package is not separately packed at the time of packing. There are many advantages such as reduction of cost, prevention of gasket displacement and cost reduction due to integral molding. In addition to this, there is an advantage that the appearance of the product is improved.

[Brief description of drawings]

1 and 2 show an embodiment of the present invention. FIG. 1 is a perspective view of a resin frame having a plurality of gaskets provided on the peripheral edge of the frame, and FIG. 2 is a ring-shaped gasket on the peripheral edge of the frame. FIG. 3 is a perspective view of a resin frame provided with, and FIG. 3 is a perspective view of a conventional example. 1 …… Frame 2 …… Thin-walled part 3,5 …… Gasket

Claims (1)

[Scope of utility model registration request] 1. A gasket (3) or (5) is integrally formed on a peripheral portion of a frame (1) via a thin portion (2), and the thin portion (2) is bent to form the frame (1). (3) The gasket (3) or (5) is fitted in the frame ring (1c) to fix the vibrating plate peripheral portion on the frame ring (1c).