JPH1023593A - Speaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reliable speaker by increasing the peeling strength of the joint part between a fine braided wire and a voice coil as a speaker used for various audio equipment. SOLUTION: Ends of the fine braided wires 24 are joined to each of the start and end terminals of a coil wound on the coil bobbin of the voice coil 23, and the joint part is clamped in the cut part 25 of the coil bobbin and fixed to suppress variance in joint strength between the voice coil 23 and the fine braided wire 24 and also improve the joint strength, thereby improving the peeling strength of the fine wire 24 fixed to the voice coil 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker used for various audio equipment.

[0002]

2. Description of the Related Art A conventional speaker will be described with reference to FIGS.

FIG. 5 is a half sectional view of a conventional speaker.
FIG. 6 is a perspective view of a state in which the tinsel wire is connected to a wire wound around a coil bobbin.

In FIG. 1, reference numeral 2 denotes a ring-shaped magnet sandwiched between an upper plate 1 and a lower plate 3 having a center pole, and these constitute a magnetic circuit 4.

A frame 5 is connected to the upper surface of the magnetic circuit 4, and an edge 7 connected to the outer periphery of a cone-shaped diaphragm 6 is connected to a peripheral portion of the frame 5. A voice coil 8 is coupled to the voice coil 8. An intermediate portion of the voice coil 8 is supported by a damper 9, and a lower portion of the coil bobbin fits in a magnetic gap 10 formed in the magnetic circuit 4 without eccentricity. A dust cap 11 is affixed to the upper surface.

[0006] The beginning and end 8a of the wire wound around the coil bobbin is provided with a tinsel wire 12 for transmitting electric signals.
Are connected to each other and pulled out.
The other ends of the two were connected to terminals 13 connected to the frame 5, respectively.

[0007]

However, in such a conventional loudspeaker, the tinsel wire 12 connected to the starting end 8a of the wire wound around the coil bobbin, respectively.
And the bonding portion 14 of the voice coil 8 is fixed at one point with an adhesive, so that the bonding strength varies,
When the speaker was operated, there was a possibility that the tinsel wire 12 was peeled off from the voice coil 8.

An object of the present invention is to solve the above-mentioned problems, and to provide a speaker of excellent performance which prevents peeling due to variation in adhesive strength of a bonding portion of a tinsel wire fixed to a voice coil. It is.

[0009]

In order to solve this problem, a loudspeaker according to the present invention is characterized in that a tinsel wire is joined to the beginning and end of a wire wound around a coil bobbin, and cut into coil bobbins corresponding to the respective joints. A notch is provided, and a tinsel wire is sandwiched and fixed in this portion.

[0010] With this configuration, the joining point between the wire loop of the voice coil and the tinsel wire is sandwiched by the notch of the coil bobbin, so that the joining point is securely held by the notch of the coil bobbin, and the tinsel wire fixed to the voice coil is secured. Can be prevented from peeling due to the variation in the adhesive strength of the bonding portions.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS According to a first aspect of the present invention, there is provided a voice coil in which a frame is coupled to an upper surface of a magnetic circuit having a magnetic gap formed therein and which fits into the magnetic gap at a peripheral portion of the frame. The periphery of the diaphragm is connected to the center of the diaphragm, the tinsel wire is joined to the beginning and the end of the wire wound around the coil bobbin of the voice coil, and the joint or its vicinity is cut out of the coil bobbin. The other end of the tinsel wire is connected to a terminal connected to the frame, and is securely held by being sandwiched in the cutout portion, thereby preventing peeling of the joined portion.

According to a second aspect of the present invention, a notch portion is provided in place of the notch portion of the first aspect, and a tinsel wire is fixed through the cut portion. This is to more surely hold the Kinshi wire.

FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIG. (Embodiment 1) FIG. 1 is a half sectional front view of a speaker according to an embodiment of the present invention, FIG. 2 (a) is a perspective view of a voice coil as a main part, and FIG. It is a perspective view of the state where the same kinshi wire was connected to the wire wound around the coil bobbin of the voice coil.

According to the figure, 15 is a ring-shaped upper plate made of iron, 16 is a ring-shaped magnet,
Reference numeral 17 denotes a lower plate made of iron having a center pole.
Is composed.

A frame 19 is provided on the upper surface of the magnetic circuit 18.
The bottom of the frame 19 is joined to the periphery of the frame 19, the edge 21 is joined to the outer periphery of the cone-shaped diaphragm 20, the center of the diaphragm 20 voice fit into the magnetic gap 22 The coil 23 is connected, and an intermediate portion of the voice coil 23 is supported by a damper 30.

The start and end 23a of the coil wound around the coil bobbin of the voice coil 23 are respectively
4 and one end thereof is sandwiched between cutouts 25 of the coil bobbin and fixed with an adhesive.
The other end of 4 is connected to a terminal 26 connected to the frame 19, respectively, and a dust cap 27 is attached to the upper surface of the center of the diaphragm 20.

As described above, according to the present embodiment, the notches 25 are provided at the respective joining portions of the tinsel wire 24 of the coil bobbin of the voice coil 23, and the tinsel wire 2 is provided at this portion.
4, the tinsel wire 24 can be pinched by the notch 25 and further fixed by the adhesive 28, and the variation in the bonding strength between the voice coil 23 and the tinsel wire 24 can be suppressed. Further, the bonding strength can be improved.

(Embodiment 2) FIG. 3 is a half sectional front view of a speaker according to another embodiment, FIG. 4 (a) is a perspective view of a voice coil as a main part, and FIG. FIG. 2 is a perspective view of a state in which is connected to a wire wound around a coil bobbin of a voice coil. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. The form is the notch 25 of the coil bobbin of the voice coil 23.
Instead of this, a cutout portion 29 is provided, and the tinsel wire 24 is penetrated and fixed with an adhesive 28.

With this configuration, the joining portion between the wire loop of the voice coil 23 and the tinsel wire 24 or its vicinity is protected by the tunnel formed by the cutout 29, so that the joining strength between the voice coil 23 and the tinsel wire 24 is improved. Can be further suppressed, and the bonding strength can be further improved.

[0020]

As described above, according to the present invention, the notch is provided in the coil bobbin of the voice coil at each joint between the wire loop of the voice coil and the tinsel wire, and the tinsel wire is sandwiched and fixed in this portion. Thereby, the joining strength between the voice coil and the tinsel wire can be improved.

[Brief description of the drawings]

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

FIG. 2 (a) is a perspective view of a voice coil as a main part of the same, and (b) is a perspective view of a state where the tinsel wire is connected to a wire wound around a coil bobbin of the voice coil.

FIG. 3 is a half sectional front view of another embodiment of the present invention.

FIG. 4 (a) is a perspective view of a voice coil which is a main part of the same. (B) is a perspective view showing a state where the tinsel wire is connected to a wire wound around a coil bobbin of the voice coil.

FIG. 5 is a half sectional front view of a conventional speaker.

FIG. 6 is a perspective view showing a state where the tinsel wire is connected to a wire loop wound around a coil bobbin of a voice coil.

[Explanation of symbols]

 Reference Signs List 18 magnetic circuit 19 frame 20 diaphragm 22 magnetic gap 23 voice coil 23a start and end of voice coil wire loop 24 tinsel wire 25 cutout portion 29 cutout portion

Claims (2)

[Claims] 1. A frame is coupled to an upper surface of a magnetic circuit having a magnetic gap formed thereon, and a peripheral portion of a diaphragm coupled to a center of a voice coil fitted into the magnetic gap is coupled to a peripheral portion of the frame. A tinsel wire is joined to the beginning and end of the wire wound around the coil bobbin of the coil, and this joint or its vicinity is sandwiched and fixed in the cutout portion of the voice coil, and the other end of the tinsel wire is connected to the frame. A speaker connected to a terminal connected to. 2. The loudspeaker according to claim 1, wherein a tinsel wire is joined to each of the start and end of the wire wound around the coil bobbin, and the tinsel wire is passed through a cut portion of the coil bobbin and fixed.