JP3247980B2 - Speaker damper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a damper for a loudspeaker used for various kinds of audio equipment, and more particularly, to a highly rigid damper made of a woven fabric, and a conductive member for inputting a voice signal to a voice coil. The present invention relates to a speaker damper comprising:

[0002]

2. Description of the Related Art In manufacturing a speaker, a conductive member for inputting a voice signal to a voice coil is integrally provided on a damper itself for the purpose of simplifying wiring to a voice coil and increasing production efficiency. Is disclosed in
134100 and JP-A-4-144500.

[0003]

The above-mentioned Japanese Patent Application Laid-Open No. 2-134
In each of the speaker dampers disclosed in Japanese Patent Publication No. 100 and Japanese Patent Laid-Open Publication No. 4-144500, a band-shaped conductive member having a predetermined width, which is a braided braided wire, is sewn to the damper body with fibers. That is, a conductive member formed by braiding a tinsel wire along the shape of the molded corrugation on the front or back surface of a damper material having corrugation on a cloth material such as woven fabric or nonwoven fabric is simply used for industrial use. Using a sewing machine, fibers (threads) are sewn from the inner periphery to the outer periphery.

[0004] As the conductive member formed by braiding the tinsel wire, a member having a thickness of about 0.6 mm and a width of about 3 mm is often used, but when sewing to a damper material, the damper material is used. Since the conductive member is positioned to some extent and placed on it and sewn with a sewing thread from above, it is not easy to attach the conductive member to the damper material, and the weight of the conductive member may change the speaker performance. In addition, since the conductive member needs to be braided in a braided wire shape, it has many problems to be solved in practice, such as affecting the manufacturing cost of the speaker.

In view of the above situation, the present invention aims to provide a speaker damper that increases the rigidity of the damper itself and is circumferentially balanced when sewing the tinsel wire itself as a conductive member directly into the damper material. Is what you do.

[0006]

In order to achieve the above object, a speaker damper according to the present invention comprises a damper substrate made of a disk-shaped cloth material having a voice coil bobbin mounting hole formed at a center portion thereof. When forming the conductive member by directly sewing the wire as the upper thread and / or the lower thread of the sewing machine, four bronze threads are provided from the inner peripheral portion to the outer peripheral portion of the mounting hole.
Lines should be at 90 degrees to each other with the center of the mounting hole as the base point.
Sewn on a straight line having a distal end portion of each of the tinsel cords, the damper
-It is characterized by forming a double coil type conductive member by sewing upward or downward along the circumferential direction toward the connection portion with the input terminal provided at the opposite position of the base material. is there.

The invention according to claim 2 of the present invention is characterized in that the conductive member made of the tinsel wire is sewn to the damper base material with a straight or non-linear seam. It is a damper.

According to a third aspect of the present invention, the conductive member made of the tinsel wire is sewn into the damper base material by partially changing the seam or / and the seam width. Speaker damper.

In the present invention, the damper substrate is made of a cloth material such as a woven fabric or a non-woven fabric, and the damper substrate is preliminarily impregnated with a thermoplastic resin such as a phenol resin, and then is used in a semi-dry state. Then, a sewing thread is sewn using a tinsel wire obtained by twisting a copper foil with a cloth thread, and then the whole is heat molded to form a corrugation concentrically on a damper base material to form a damper.

[0010] The tinsel wire to be sewn into the damper base material is not particularly limited as long as it has an appropriate thickness to exhibit the function as a conductive member. The sewing is performed by using a kinshi wire as a sewing thread, specifically, using the kinshi wire as an upper thread or a lower thread of the sewing machine, or by using both the upper thread and the lower thread.

The sewing of the tinsel wire into the damper base material is performed between an inner peripheral portion of a mounting hole formed at a central portion for holding the voice coil bobbin and an outer peripheral portion connected to the input terminal. However, the path of the sewing of the kinshi line is
To what was taken in a circular circumferential direction of the balance, the tinsel wire four toward the outer periphery from the inner periphery of the mounting hole, the mounting hole
On a straight line having an angle of 90 degrees with respect to the center of
And sew the front end of each tint wire relative to the damper base material.
To the connection with the input terminal provided at the position
They are arranged along a non-linear path that is sewn upward or downward along the circumferential direction , respectively.

At this time, the seam of the tinsel wire to the damper base material may be so-called straight stitch, or may be non-linear seam called zigzag stitching or trimming. There is no special limitation. Further, the sewing machine needle through which the tinsel wire passes is a so-called single needle, which is a two-needle in which a hole for passing a thread at the tip is connected in parallel at a predetermined interval. Alternatively, when two needles are used, the + and-sides of the speaker can be sewn simultaneously. Further, when sewing the tinsel wire into the damper base material, the seam may be sewn by partially changing the seam and the seam width, or simultaneously changing the seam and the seam width.

[0013]

According to the speaker damper of the present invention, when a tinsel wire is directly sewn into a damper base material made of a cloth material to form a conductive member, the damper base material extends from the inner peripheral part to the outer peripheral part of the mounting hole of the damper base material.
Four kinshi lines toward each other with the center of the mounting hole as the base point.
Sewn on a straight line with a 90 degree angle
Insert the tip into the opposite side of the damper base.
Up along the circumferential direction toward the connection with the force terminal
Since it is arranged in a non-linear path that is sewn toward one side or below, it can be balanced in the circumferential direction.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a speaker damper according to the present invention will be described below in detail with reference to the accompanying drawings. The damper 1 for a speaker shown in FIG. 1 is formed by impregnating a woven cloth having a mounting hole 2 for holding a voice coil bobbin in the center with a phenol resin, and forming a semi-dry disk-shaped damper base material 3 . The tinsel wires 4a and 4b are sewn in a zigzag shape at a time using two needles in a linear path from the inner peripheral portion to the outer peripheral portion of the mounting hole 2 to form the conductive member 4, and then the damper substrate 3 Is pressed to form corrugations concentrically.

A speaker damper 11 of the present invention shown in FIG. 2 has a mounting hole 21 formed in a disk-shaped damper base material 31 made of a woven fabric which is impregnated with a phenol resin and then made into a semi-dry state. Four brocades from the periphery to the periphery
The thread lines 4c, 4d, 4e, and 4f are set with the center of the mounting hole as a base point.
Sewing straight stitch on a straight line having an angle of 90 degrees from each other Te
Included N Danochi, the distal end portion, the opposing position of the damper base
The upper and lower portions are sewn in the same direction along the circumferential direction toward the connection portion of the input terminal provided at the same position to form double coil-type conductive members 41, 41, which are then press-formed. The corrugations are formed concentrically.

The speaker damper 11 thus obtained is
Compared to the speaker damper 1 shown in FIG.
X which is surrounded by and 4d and the kinshi lines 4e and 4f
And the balance with other portions Y can be made substantially uniform, and a speaker damper that is substantially balanced in the circumferential direction can be obtained.

That is, in the present invention, the tinsel wire is oriented 45 degrees from the inner peripheral portion to the outer peripheral portion of the disk-shaped damper, more specifically, the disk-shaped damper base material.
31 from the inner peripheral part to the outer peripheral part of the mounting hole 21 formed in
The four tinsel wires 4c, 4d , 4e, 4f in the mounting holes
Directly on a straight line having an angle of 90 degrees from the center
After sewing with line stitching, the tip is
To the connection of the input terminal provided at the opposite position of
Same straight stitching upward or downward along the circumferential direction
Because you are Nde sewing Inclusive, increase the intensity of the damper base 31,
Nearly balanced in the circumferential direction can be uniformly and to Rukoto.

In FIG. 1 and FIG. 2, a tinsel wire protruding from the inner or outer peripheral portion is an extra line for connecting to a lead wire or an input terminal of a voice coil.

[0019]

According to the speaker damper of the present invention, when a tinsel wire is directly sewn as a sewing thread to a damper base material made of a cloth material to form a conductive member, the damper base is used.
Four tinsel wires from the inner to outer periphery of the mounting hole for the material
Have an angle of 90 degrees with respect to the center of the mounting hole.
Sewing on a straight line,
At the connection with the input terminal provided at the opposite position of the substrate
Sewing upward or downward along the circumferential direction, respectively.
Since the arranged evenly in a non-linear path Komu There can be circumferentially balanced, with good rigidity.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of a speaker damper.

FIG. 2 is a plan view showing an embodiment of a speaker damper of the present invention.

[Explanation of symbols]

 1,11 Speaker damper 2,21 Mounting hole 3,31 Damper base material 4,41 Conductive member 4a-4f Kinshi wire

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04R 9/02 103 H04R 9/04 103 H04R 31/00

Claims (3)

(57) [Claims] The present invention relates to a damper substrate made of a disk-shaped cloth material having a voice coil bobbin mounting hole formed at a center portion thereof, and a tinsel wire is directly sewn as an upper thread and / or a lower thread of a sewing machine to conduct electricity. In configuring the member, four tinsel wires are provided from the inner peripheral portion to the outer peripheral portion of the mounting hole.
Have an angle of 90 degrees with respect to the center of the mounting hole.
And sew them along a straight line, and set the end of each kinshi wire at the opposite position of the damper base material.
Vignetting and along each circumferential direction toward the connecting portion between the input terminal sewn upward or downward, a speaker damper, characterized in that the formation of the double coil type conductive members. 2. The damper for a speaker according to claim 1, wherein the conductive member made of the tinsel wire is sewn into the damper base material with a stitch being straight or non-straight. 3. The speaker damper according to claim 1, wherein the conductive member made of the tinsel wire is sewn into the damper base material by partially changing the stitches and / or the stitch width.