JPS63224597A - Speaker - Google Patents

Abstract

PURPOSE:To prevent the deformation and contact of a flexible wire by using a cushion member so as to clip the flexible wire vertically and fix it on a cone face. CONSTITUTION:With a voice signal applied to a terminal 10, the signal is given to the voice coil 4 through the flexible wire 9. The coil 4 resides in a magnetic field generated from the magnet and moved vertically with respect to the field in response to the current to utter voice from the cone paper 5. The wire 9 is moved in response to the movement of the coil 4, but since the wire is fitted onto the cone paper 5 while clipping the cushion member 12 made of urethane, rubber or cloth, no deformation is caused but the wire is moved identically to the cone paper. Thus, the deformation of the flexible wire 9 is prevented and the contact with the cone paper 5 and the damper 6 is avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a speaker used in audio equipment.

Conventional technology In recent years, the field of audio equipment has become more compact and high-performance, and speakers are now required to have a small diameter and thin shape.In addition, for workability and reliability, the voice coil and terminal are directly connected with flexible wire. Demand for direct lead type speakers is increasing.

The structure of a conventional direct lead type speaker will be described below with reference to the drawings. FIG. 3 shows a speaker with a conventional structure. In the figure, 1 is a plate with a pole piece, 2 is a ring-shaped magnet, 3 is a ring-shaped top plate, 4 is a voice coil, 6 is a cone paper, 6 is a damper, 7 is a dust cap, 8 is a gasket, and 9 is a flexible A wire, 1o is a terminal, and 11 is a frame.

The operation of the conventional speaker configured as described above will be described below.

First, the audio signal amplified by the amplifier is sent to terminal 1.
When an electric current is applied to the current, it is transmitted through the flexible wire '1 to the voice coil 4.The voice coil 4 is held in the magnetism generated by the magnet, and according to the current, it moves up and down perpendicular to the field part according to Fleming's law. Let's do it. This movement is transmitted to the paper cone 6 and creates a dense air condition, thereby generating sound. Further, the flexible wire also maintains a conductive state by changing its shape in response to the movement of the voice coil 4.

Problems to be Solved by the Invention In the speaker with the above structure, the flexible wire changes its shape and transmits the signal when the amplitude is large, but when the amplitude is large or the flexible wire itself becomes resonant,
Movements that are unrelated to amplitude occur. At that time, the 7 lexiple wire that passes through the center of the speaker, especially the narrow area between the paper cone and the damper, comes into contact with the paper cone and the damper, producing abnormal noise. In addition, in thin speakers, the space between the cone paper and the damper is particularly narrow, making contact with the flexible wire unavoidable, making it difficult to introduce a direct lead type. The present invention provides a speaker that eliminates the generation of abnormal noise by preventing the above-mentioned disadvantages of deformation and contact of the flexible wire, and that enables a thin speaker to be used as a direct lead.

Means for Solving Problems In order to solve all the problems, the speaker of the present invention has a flexible wire that passes through a particularly narrow area between the cone paper and the damper, and a cushioning material made of urethane, rubber, cloth, etc. from above and below. This is sandwiched and fixed to the cone surface using double-sided tape or adhesive to prevent deformation of the flexible wire during vibration and generation of abnormal noise due to contact with the cone paper or damper.

Effect: With this configuration, the narrow area between the paper cone and the damper, especially the area where the flexible wire is likely to come into contact, is fixed, thereby preventing abnormal noise from occurring, and the vibration width of the flexible wire itself is shortened, resulting in a high resonance point. By moving the flexible wire to a different position, the occurrence of deformation of the flexible wire itself becomes smaller.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to all the drawings.

FIG. 1 shows an example of the use of a speaker in which a cushioning material is attached to a flexible wire according to an embodiment of the present invention. In the figure, 1 is a plate with a pole piece, 2 is a ring-shaped magnet, 3 is a ring-shaped top plate, 4 is a voice coil, 5 is a paper cone, 6 is a damper, 7 is a dust cap, 8 is a gasket, and 9 is a flexible Wire, 1o is terminal, 11 is frame~
12 indicates a cushioning material.

The configuration of the present invention will be explained below. First, when an audio signal amplified by an amplifier is applied to the terminal 10,
The voice coil 4 is sandwiched by the magnetism generated from the voice coil 4 through the flexible wire 9, and moves up and down perpendicular to the field part according to Fleming's left-hand rule according to the current.This movement is the cone paper 6. The sound is generated by creating a dense air condition.

17'? - The flexible wire 9 also moves in response to the movement of the voice coil, but since it is attached to the paper cone 5 with the cushioning material 12 in between, it moves in the same way as the paper cone 6 without causing deformation. Therefore, cushion material 1
Since there is no abnormal movement in the area sandwiched between the paper cone and the damper (the narrow area between the paper cone and the damper), there is no abnormal noise caused by contact with the paper cone or the damper.

Next, FIG. 2 shows details of how to attach the cushioning material. In the figure, 4 indicates a voice coil, 5 indicates a paper cone, 9 indicates a flexible wire, 12 indicates a cushioning material, and 13 indicates a double-sided tape, adhesive, or adhesive. First, voice coil 4
The flexible wire 9 is attached using a conventional method, and then a cushioning material 1 made of urethane, rubber, cloth, etc. is placed near the voice coil 4 of the flexible wire 9.
Attach 2 from the top and bottom using double-sided tape, adhesive, or adhesive. Thereafter, when assembling the speaker, when attaching the cone paper 6, the above-mentioned Cutshilon material is attached to the back side of the cone paper 6 using double-sided tape, adhesive, or adhesive.

Effects of the Invention As described above, according to the present invention, (1) In the narrow space between the cone paper and the damper, the flexible wire comes into indirect contact with the cone paper with the cushioning material in between, and during vibration, The movement is the same as that of cone paper. Therefore, since the flexible wire itself does not move as in the past, it does not come into contact with the paper cone or the damper, and no abnormal noise is generated.

(2) For thin speakers, the space between the cone paper and the damper is particularly narrow, so the cushion material is sandwiched between the two, but the flexible wire itself is no longer in direct contact with the cone paper or damper, causing abnormal noise. There isn't.

(3) The flexible wire is indirectly attached to the paper cone in places where contact is likely to occur9, and the movement of the flexible wire itself is beyond the cushioning material. (This method is similar to the indirect lead type.) Therefore, the flexible wire itself is weak in strength, and costs can be reduced.

In addition, the flexible wire can be adjusted after the cushioning material, and there is no contact with the cone paper or damper, which improves workability and quality.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the main parts of a speaker according to the present invention, Fig. 2a
, b, and c are a top view, a side view, and a cross-sectional view of the attachment of the cushioning material according to the present invention, and FIG. 3 is a cross-sectional view of the main part of a conventional speaker. 12...Cushion material. Name of agent: Patent attorney Toshio Nakao and 1 other person/2
--Kutsushikon material Figure 1

Claims (1)

[Claims] A speaker that uses a direct pull-out voice coil in which the voice coil and terminal are connected by a flexible wire, in which the flexible wire is sandwiched from above and below with cushioning material, and this is fixed to the cone surface.