JPH09284892A - Speaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automate the assembling of a speaker and to prevent sound quality from being deteriorated by decreasing an interval between a cone paper and a damper. SOLUTION: One terminal of a flexible lead wire 35 is connected to a lead wire 17 of a coil 11 on a bobbin 13 of the voice coil 11. While the lead wire 35 from the one end to its middle part is placed on the rear side of cone paper 19, the middle part of the middle part of the lead wire 35 is fixed by a clamp 41 on the rear side of the cone paper 19. Part of the lead wire 35 placed on the rear side of the cone paper 19 is adhered onto the cone paper 19. While the lead wire 35 from the middle part to the other end is slacked, the other end of the lead wire 35 is connected to an input terminal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker, and more particularly to a voice coil (vibrating side) and an input terminal (stationary side).
The present invention relates to a lead wire mounting structure for electrically connecting and.

[0002]

2. Description of the Related Art Speakers are classified into indirect lead type and direct lead type. FIG. 5 shows an indirect lead type speaker, and FIG. 6 shows a direct lead type speaker. In the figure, 11 is a voice coil in which a coil 15 is wound around a cylindrical bobbin 13, 17 is a lead wire of the coil 15, and 19 is a lead wire.
Is cone paper, 21 is a frame, 23 is a center cap, 25 is a damper, 27 is a plate, 29 is a magnet, 31 is a center pole yoke, 33 is an input terminal, 3
Reference numeral 5 is a lead wire that connects the input terminal 33 and the lead wire 17 of the coil 15.

The indirect lead type speaker shown in FIG.
Coil the lead wire 17 of the coil on the surface of the cone paper 19,
The lead wire 17 and the lead wire 35 are connected on the cone paper 19. On the other hand, in the direct lead type speaker of FIG. 6, the lead wire 17 and the lead wire 35 are connected on the bobbin 13 between the cone paper 19 and the damper 25.

As the lead wire 35, a copper foil yarn wire or a braided copper foil yarn wire having excellent flexibility and bending resistance,
A twisted copper foil yarn wire, or a braided copper or copper alloy wire around the outer circumference of the tensile strength fiber bundle is used.

[0005]

When assembling the indirect lead type speaker of FIG. 5, an eyelet is attached to the cone paper, and one end of the lead wire is inserted into the cone paper to project it toward the front side of the cone paper. It is necessary to tie the lead wire of the voice coil around the protruding portion of the lead wire for soldering. Therefore, there is a problem that the assembly work is troublesome and the assembly cannot be automated.

The direct lead type speaker shown in FIG.
This point is improved, and since one end of the lead wire may be soldered to the lead wire on the bobbin, there is an advantage that the assembling property is greatly improved and the assembling is easy. However, on the other hand, it is necessary to widen the distance between the cone paper and the damper in order to prevent the lead wire from coming into contact with the cone paper or the damper when it swings, which causes a problem that the sound quality of the speaker is deteriorated. In addition, since the length of the lead wire becomes longer and the amplitude also becomes larger, the rope skipping phenomenon (the phenomenon in which the lead wire is swung around like a rope skipping rope) is likely to occur, which leads to disconnection of the lead wire and sound quality. There is also a problem in that

In view of the above problems, it is an object of the present invention to provide a speaker which is easy to assemble and does not deteriorate the sound quality.

[0008]

In the speaker of the present invention for achieving this object, one end of a flexible lead wire is connected to a lead wire of a coil on a bobbin of a voice coil, and one end of the lead wire is connected to the middle. Part of the lead wire is fixed to the back surface of the cone paper with the part up to the back surface of the cone paper, and the other end of the lead wire is loosened from the middle part of the lead wire to the other end. Is connected to the input terminal. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0009]

1 to 4 show an embodiment of the present invention. 1 to 4, parts corresponding to the respective parts in FIGS. 5 and 6 described above are denoted by the same reference numerals. This speaker is characterized by the mounting structure of the lead wire 35. That is, one end of the lead wire 35 is connected to the lead wire 17 of the coil 15 on the bobbin 13 of the voice coil 11, and the lead wire is laid from the one end to the middle portion of the lead wire 35 on the back surface of the cone paper 19. The middle portion of the lead wire 35 is fixed to the back surface of the cone paper 19, and the other end of the lead wire 35 is connected to the input terminal 33 in a state in which there is slack from the middle portion of the lead wire 35 to the other end.

As shown in FIGS. 1 and 2, the lead wire 35 and the lead wire 17 are connected by bonding a copper foil 37 to the bobbin 13 with an adhesive or the like, and soldering both on the copper foil 37. Is going. 39 is the soldering part. In addition, as shown in FIGS. 3 and 4, the middle portion of the lead wire 35 is fixed to the cone paper 19 by piercing the cone paper 19 with a U-shaped clasp 41 spanning the lead wire 35, and the both ends of the cone paper 19 to the outside. This is done by folding it in. The form of the clasp 41 is not limited to this, and may be, for example, a stapler needle.

Further, the portion of the lead wire 17 laid on the back surface of the cone paper 19 is adhered to the back surface of the cone paper 19 with an adhesive (not shown). This is to prevent the portion crawled on the back surface from vibrating together with the cone paper 19 and generating abnormal noise due to collision or rubbing.

With the above construction, the lead wire 35 connected to the lead wire 17 on the bobbin 13 is connected to the cone paper 19
Since the work of pulling out along the back surface of the speaker is simple and the work of fixing the intermediate portion of the lead wire 35 to the cone paper 19 is relatively simple, it is easy to automate the speaker assembly.

Further, since the lead wire 35 extends from the connecting portion with the lead wire 17 to the middle portion on the back surface of the cone paper 19 and the middle portion is fixed to the back surface of the cone paper 19, the cone paper 19 vibrates. However, the lead wire 35 does not collide with the cone paper 19 or the damper 25. Therefore cone paper 1
The distance between 9 and the damper 25 can be made sufficiently small as in the case of an indirect lead type speaker, and good sound quality can be maintained. Furthermore, since the length of the portion of the lead wire 35 that freely vibrates (the length from the intermediate fixing portion to the input terminal 33) is short and the amplitude is small, the skipping phenomenon does not occur. Therefore, there is little risk of disconnection,
There is no possibility that the lead wire 35 collides with the cone paper 19 or the damper 25 to generate abnormal noise.

[0014]

As described above, the speaker of the present invention has a structure in which the lead wire connected to the lead wire of the coil on the bobbin is pulled out to the back side of the cone paper, so that it is easy to assemble and the assembly is automated. The production efficiency can be improved, the distance between the cone paper and the damper can be made sufficiently small, and the amplitude of the lead wire is also small, so that good sound quality can be maintained.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a speaker according to the present invention.

FIG. 2 is a cross-sectional view taken along the line AA of the speaker of FIG.

3 is a cross-sectional view of the speaker of FIG. 1 in a direction along a lead wire of a lead wire fixing portion.

FIG. 4 is a cross-sectional view of a lead wire fixing portion in a direction crossing the lead wire.

FIG. 5 is a cross-sectional view showing an indirect lead type speaker.

FIG. 6 is a sectional view showing a direct lead type speaker.

[Explanation of symbols]

 11: Voice coil 13: Bobbin 15: Coil 17: Lead wire 19: Cone paper 25: Damper 33: Input terminal 35: Lead wire 37: Copper foil 39: Solder part 41: Clasp

Claims (2)

[Claims] 1. A flexible lead wire (35) has one end connected to a lead wire (17) of a coil on a bobbin (13) of a voice coil (11), and one end of the lead wire (35) is intermediate. The middle part of the lead wire (35) is fixed to the back surface of the cone paper (19) in a state where the part of the lead wire (35) is laid on the back surface of the cone paper (19). A speaker in which the other end of the lead wire (35) is connected to the input terminal (33) in a loosened state. 2. The speaker according to claim 1, wherein a portion of the lead wire (35) which is laid on the back surface of the cone paper (19) is adhered to the cone paper (19).