JPH04365297A - Speaker - Google Patents

Abstract

PURPOSE:To obtain the speaker with high productivity by resolving the problem of a complicated process or adverse soldering ability concerning a method for integrating gold thread line into a damper. CONSTITUTION:A diaphragm 8 is coupled to a voice coil 10 to be fitted into a magnetic gap 9 of a magnetic circuit 5, one part of a damper 16 is cut off, a gold thread line 17 is arranged at that part and integrated by adhesion, one terminal of this gold thread line 17 is connected to the voice coil 10, and the other terminal is connected to a terminal 15. Thus, the gold thread line 17 and the damper 16 can be easily integrated, and productivity and reliability can be improved.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to speakers used in various types of audio equipment.

0002

2. Description of the Related Art A conventional speaker will be explained with reference to the drawings. FIG. 3 is a half-sectional view showing the configuration of a conventional speaker, in which a ring-shaped magnet 3 and a ring-shaped upper plate 4 are placed on a lower plate 2 having a center pole 1.
A frame 6 is connected to the upper plate 4 of the magnetic circuit 5, and a diaphragm 8 is attached to the periphery of the frame 6.
A gasket 7 was glued together with the peripheral edge of the gasket 7. Also,
A voice coil 10 fitted without eccentricity into the magnetic gap 9 formed by the magnetic circuit 5 is coupled to the center of the diaphragm 8, and the bobbin middle portion of the voice coil 10 is held by a damper 11. Further, a dust cap 12 was incorporated on the upper surface of the central portion of the diaphragm 8.

Further, a lead wire 13 drawn out from the voice coil 10 is connected and fixed to one end of a gold thread 14 on the side wall of the bobbin of the voice coil 10, and the other end of this gold thread 14 is connected between the diaphragm 8 and the damper 11. It was connected to a terminal 15 placed in the space and coupled to the frame.

0004

However, in the conventional configuration described above, when an input signal is applied to the speaker, the voice coil 10 fitted in the magnetic gap 9 vibrates up and down, and the vibration that is coupled to the voice coil 10 Plate 8 similarly oscillates. At this time, since the gold thread wire 14 connected to the voice coil 10 has a configuration with a margin for routing, the voice coil 10, the diaphragm 8, the damper 11
The gold thread wire 14 oscillates with the amplitude of the vibration system components,
This has caused quality problems such as contact with the diaphragm 8 and damper 11 and generating abnormal noise or breaking the wire.

[0005] For this reason, instead of disposing the gold thread wire 14 in the space between the diaphragm 8 and the damper 11, a method is used in which the damper 11 and the gold thread wire 14 are integrated.

As a structure for integrating the damper 11 and the gold thread wire 14, a woven fabric in which the gold thread wire 14 is woven is impregnated with a resin and molded into a predetermined shape, or a resin-impregnated woven fabric is woven with the gold thread wire 14. However, in the above configuration, since the gold thread wire 14 is impregnated with resin, a resin coating is formed on the surface of the gold thread wire 14, and it is connected to the voice coil 10 or the terminal 15. Solderability becomes extremely difficult. Further, although the latter configuration improves solderability, it has the problem that a large number of steps are required to sew the gold thread wire 14 and the damper 11 together.

An object of the present invention is to eliminate the above-mentioned conventional drawbacks, and to provide a speaker with improved reliability and high productivity.

[0008]

[Means for Solving the Problems] In order to solve the above-mentioned problems, a speaker according to the present invention has a frame coupled to a magnetic circuit having a magnetic gap formed therein, and an outer peripheral portion of a diaphragm having a voice coil coupled to the central portion of the frame. The inner periphery of the damper is bonded to the outer periphery of the damper and a voice coil is fitted into the magnetic gap, and the inner periphery of the damper is formed by impregnating a thermosetting resin into a base fabric made of cotton fiber alone or phenolic fiber, cotton fiber, and heat-resistant fiber. At the same time, cut out a part of this damper, place a pair of gold thread wires in this cut out part, connect one end of this gold thread wire to the voice coil, and connect the other end to the voice coil. The structure is such that it is connected to a terminal connected to the frame.

[0009]

[Operation] With this configuration, the gold thread wire and the damper can be easily integrated, and reliability can be improved.

[0010] Furthermore, the cutting process of the damper can be performed simultaneously with the cutting of the inner and outer diameters, and the gold thread can be bonded by simply placing it along the damper and fixing it with an adhesive.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a half-sectional view showing the structure of a speaker according to the present invention, and FIG. 2 is a perspective view showing a damper to which gold thread wires used in the same embodiment are bonded. Note that parts having the same configuration as those described in the conventional example are given the same reference numerals.

In FIG. 1, reference numeral 5 indicates a magnetic circuit in which a magnetic gap 9 is formed, and this magnetic circuit 5 is connected to the center pole 1.
It is constructed by joining a ring-shaped magnet 3 and a ring-shaped upper plate 4 onto a lower plate 2 having a shape.

A frame 6 is connected to the upper plate 4, and a gasket 7 is fixed to the peripheral edge of the frame 6 together with the peripheral edge of the diaphragm 8. A voice coil 10 is coupled to the center of the diaphragm 8, and the voice coil 10 is fitted into the magnetic gap 9, and a dust cap 12 is fixed to the upper surface of the center of the diaphragm 8.

Reference numeral 16 denotes a damper in which a gold thread wire 17 is integrally connected. One end of the gold thread wire 17 is connected to a lead wire (not shown) of the voice coil 10, and the other end is connected to the frame 6. It is connected to terminal 15. A damper 16 that combines this gold thread wire 17 into an integral structure
will be explained in detail using FIG.

In FIG. 2, reference numeral 16 denotes a damper, and a cutout 18 is provided extending from the center toward the outer circumference, leaving the inner and outer circumferences of the damper 16, and the gold thread wire 17 is arranged in this cutout 18. The damper 16 and the gold thread wire 17 are fixed together using an adhesive. The width of the cutout portion 18 is approximately equal to the wire diameter of the gold thread wire 17, and the width of the cutout portion 18 is set to be approximately the same as the wire diameter of the gold thread wire 17.
It is necessary to ensure that the inner and outer peripheral portions of the damper 16 are left intact so as not to induce a decrease in the strength of the damper 16.

Further, the damper 16 according to the above embodiment has the following features:
A woven fabric made of a blend of phenolic fibers and aromatic polyamide fibers, which is impregnated with a phenolic resin and then thermoformed.

[0017]

[Effects of the Invention] Since the speaker according to the present invention is constructed as described above, the damper and the gold thread wire can be integrated with a simple method, and the solderability is good, simplifying the assembly of the speaker. Not only is this possible, but it is also possible to improve reliability and reduce the thickness.

[Brief explanation of drawings]

FIG. 1 is a half-sectional view showing the configuration of a speaker in an embodiment of the present invention.

[Fig. 2] A perspective view of a damper in which gold thread wires used in the speaker of the present invention are combined into an integral structure.

[Figure 3] Half-sectional view showing the configuration of a conventional speaker

[Explanation of symbols]

1 Center pole 2 Lower plate 3 Magnet 4 Upper plate 5 Magnetic circuit 6 Frame 7 Gasket 8 Diaphragm 9 Magnetic gap 10 Voice coil 12 Dust cap 15 Terminal 16 Damper 17 Gold thread wire

Claims (2)

[Claims] Claim 1: A frame is coupled to a magnetic circuit in which a magnetic gap is formed, an outer circumference of a diaphragm with a voice coil coupled to the center thereof is coupled to the outer circumference of the frame, and the voice coil is fitted into the magnetic gap. The inner periphery of the damper is formed by impregnating thermosetting resin into a base fabric made of fiber alone or phenolic fiber, cotton fiber, and heat-resistant fiber, and the inner periphery is connected to the voice coil, and the outer periphery is connected to the frame. A speaker in which a part of this damper is cut out, a pair of gold thread wires are arranged in the cut out part, one end of the gold thread wire is connected to the voice coil, and the other end is connected to a terminal connected to the frame. [Claim 2] Aromatic polyamide fiber as heat-resistant fiber,
2. The speaker according to claim 1, wherein imide fiber, carbon fiber, and glass fiber are used alone or in combination of two or more.