JPH04324800A - Speaker - Google Patents

Abstract

PURPOSE:To integrate a diaphragm, an edge, a center ring and a coil by resin- injection forming. CONSTITUTION:A coil 12 of a diaphragm group component 16 in which a diaphragm 9, an edge, a center ring 11 and a coil 12 are integrated by resin- injection forming is fitted to a magnetic air gap 18 of a field section 17 comprising an upper plate 13, a magnet 14 and a lower plate 15 and fixed by a buffle plate 19. The excellent speaker is realized, in which improper operation due to defective bonding, tilted coil and eccentricity is not caused.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker which is used in various types of audio equipment and which integrates a diaphragm, an edge, a center ring, and a coil to facilitate assembly and improve quality and performance.

0002

2. Description of the Related Art A conventional speaker will be explained with reference to the drawings.

FIG. 3 shows the structure of a conventional speaker. In FIG. 3, an edge 2 is attached to the outer circumference of a dome-shaped diaphragm 1. A vibration system in which a voice coil bobbin 5 around which a coil 4 is wound is bonded to the outer periphery of the dome-shaped diaphragm 1 is connected to an upper plate 6, a magnet 7,
The coil 4 is held by a center ring 3 so as to fit into a magnetic gap 9 of a field section formed by a lower plate 8 without eccentricity, and is fixed by a baffle plate 10.

The operation of the speaker configured as described above will be explained below. When an input voltage is applied to the coil 4 in the magnetic gap 9, a driving force is generated,
A dome-shaped diaphragm 1 is vibrated to generate sound.

[0005]

[Problems to be Solved by the Invention] However, the above configuration has the following problems. That is, in order to fix the dome-shaped diaphragm 1 and the edge 2 and the dome-shaped diaphragm 1 and the voice coil bobbin 5 with adhesive,
A malfunction may occur due to defective adhesion or a tilt of the coil 4, and the edge 2 attached to the outer periphery of the dome-shaped diaphragm 1 to which the voice coil bobbin 5 is bonded may not be attached to the center ring 3 without being attached to the baffle. Since it is fixed by the plate 10, eccentricity and inclination of the coil 4 occur, resulting in malfunction.

The present invention solves the above-mentioned conventional problems, and provides a speaker that reduces processing steps, facilitates assembly, and improves quality performance.

[0007]

[Means for Solving the Problems] In order to solve this problem, the speaker of the present invention has a structure in which a diaphragm, an edge, a center ring, and a coil are integrally molded by resin injection molding.

[0008]

[Operation] This configuration eliminates adhesion defects, tilting and eccentricity of the coil, reduces processing steps, and facilitates assembly, making it possible to realize a speaker with improved quality and performance.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a speaker in one embodiment of the present invention. In FIG. 1, 16 is a dome-shaped diaphragm 9, an edge 10, a center ring 11, and a coil 12.
is a vibration system component integrated by resin injection molding, and the coil 12 is connected to the upper plate 13, magnet 14,
Magnetic gap 1 of field section 17 configured with lower plate 15
8 without eccentricity, and is fixed with a baffle plate 19 to form a speaker.

The operation of the speaker configured as described above will be explained below. When an input voltage is applied to the coil 12 within the magnetic air gap 18, a driving force is generated causing the dome-shaped diaphragm 9 to vibrate. Dome-shaped diaphragm 9
, the edge 10, the center ring 11, and the coil 12 are integrated by resin injection molding, so malfunctions due to adhesion defects, inclination of the coil 12, and eccentricity do not occur.

A second embodiment of the present invention will be described below with reference to the drawings. FIG. 2 shows a second embodiment of the invention. A semi-dome-shaped diaphragm 22 having a substantially conical cone portion 21 on the outside of the dome portion 20, and an edge 23.
, center ring 24, and coil 25 are integrated by resin injection molding.

The operation of the speaker constructed as described above is similar to that of the first embodiment.

[0014]

Since the present invention is constructed as described above, the following effects can be obtained.

Since the diaphragm, edge, center ring, and pre-wound coil are inserted into a mold and integrated by injection molding of resin, there is no possibility of movement due to adhesion defects, coil inclination, or eccentricity. It is possible to realize an excellent speaker with no defects.

[Brief explanation of the drawing]

[Fig. 1] A cross-sectional view of a speaker in an embodiment of the present invention.

[
Figure 2: Cross-sectional view of a speaker vibration system according to another embodiment

[Figure 3]
Cross-sectional view of a conventional speaker

[Explanation of symbols]

9 Diaphragm 10 Edge 11 Center ring 12 Coil 13 Upper plate 14 Magnet 15 Lower plate 16 Vibration system 17 Field part 18 Magnetic air gap 19 Baffle plate

Claims (2)

[Claims] Claim 1: A dome-shaped diaphragm, an edge, a center ring, and a pre-wound coil are inserted into a mold, and the above-mentioned coil of a vibration system component is integrated by injection molding resin and is integrated into a field part. A speaker that is inserted into the magnetic air gap. Claim 2: A semi-dome-shaped diaphragm having a substantially conical cone portion on the outside of the dome portion, an edge, a center ring,
2. The speaker according to claim 1, wherein the coil is integrally formed by resin injection molding.