JPS62265900A - Speaker - Google Patents

Abstract

PURPOSE:To improve the reliability of a connection, and to automatize a connection process by disposing a wiring material, which electrically connects a voice coil and a terminal, on the surface the same as a flat-shaped damper. CONSTITUTION:The damper 20 is constituted by punching flat-shaped materials such as a glass cloth containing epoxy resin and a cloth containing phenol resin. The wiring material 21 is made of an elastic conductor such as phosphor bronze, and a part which does not allowed into contact with the damper 20 is in a zigzag shape. A part 22 conneting the lead wire of the voice coil 33 at one end of the wiring material 21 is secured to the central part of the damper 20. A part 23 connected with a terminal eyelet 24 is secured to an outer periphery. The winding start and winding end of lead wire of the voice coil 33 can be connected with the wiring material 21 on the plane and comparatively hard materials such as phosphor bronze can be used for the wiring material 21, whereby the automatization of work is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to speakers used in various audio equipment, video equipment, communication equipment, and the like.

Prior Art A conventional speaker has a structure as shown in FIG. In FIG. 3, a plate 2 with a center ball 1;
A frame 6 is connected to a magnetic circuit 5 composed of a ring-shaped magnet 3 and a ring-shaped upper plate 4, and a diaphragm 8 is fixed to the periphery of the frame 6 with an adhesive or the like together with a gasket 7. A bobbin 10 on which a voice coil 9 is wound is coupled to the center of the plate 8.

The middle part of the bobbin 1o of the voice coil 9 is connected to the damper 1
1, the voice coil 9 is connected to the magnetic circuit 5.
It fits into the magnetic gap 12 without eccentricity. Furthermore, a dust cap 13 is pasted on the upper surface of the central part of the diaphragm 8, and furthermore, the lead wires at the beginning and end of the winding of the voice coil 9 are made of two gold thread wires or the like in the middle part of the bobbin 10 of the voice coil 9. Each of the wires is electrically connected to a lead wire 14, and the lead wire 14 is fixed to the bobbin 1o.

The other output wire 14 was configured to be connected to a terminal eyelet 16 provided in a part of the frame 6.

As another conventional example, as shown in FIG. 4, the lead wires 18 at the beginning and end of the winding of the voice coil 9 are electrically connected to a drawer M14 made of two gold thread wires or the like on the surface 19 of the diaphragm 8. The lead wire 14 is fixed to the diaphragm 8. There is a speaker in which this lead wire 14 is connected to a terminal eyelet 16 provided on the frame 6.

In the conventional speaker, the lead wire 14 connecting the voice coil 9 and the terminal is pulled out from the bobbin 10 of the voice coil 9 to the terminal eyelet 15, or
The difference is whether it is drawn out from above the diaphragm 8 to the terminal eyelet 15, and in both cases, the leader line 14 is drawn out without any support in the space.

Problems to be Solved by the Invention However, in the configuration shown in FIG. 3 described above, the diaphragm 8
Since the lead wire 14 is drawn out from between the damper 11 and the damper 11, it is necessary to prevent the lead wire 14 from coming into contact with the lower part of the diaphragm 8 or the damper 11. In other words, a certain amount of clearance is required between the diaphragm 8 and the damper 11 shown at 16. The dimension of this gap 16 must be at least 3rtan,
This had the disadvantage that the height 17 of the speaker was increased. Furthermore, even if the voice coil 9 oscillates between the bobbin 10 and the terminal eyelet 15 of the voice coil 9,
The leader wire 14 must be drawn out with an appropriate margin so as not to pull the bobbin 10, and also formed properly so as not to hit the damper 11 or the diaphragm 8. Moreover, it is necessary to select a material for the leader wire 14 that is flexible enough not to affect the bobbin 10 of the voice coil 9.

It is difficult to use an automatic machine to pull out the soft lead wire 14 to the terminal eyelet 15 while leaving an appropriate margin and forming it well, which has resulted in a problem that automation of speaker production has not progressed.

The configuration shown in FIG. 4 does not have the disadvantage of increasing the overall height of the speaker, but the leader line 1 fixed to the diaphragm 8
It is extremely difficult to automatically mechanize the work of pulling out the terminal eyelet 16 with an appropriate margin so as not to contact the diaphragm 8 or damper 11 during vibration.
Furthermore, the lead wires 1 at the beginning and end of the voice coil 9
8 on the surface of the diaphragm 8 at 19 was also a major obstacle to automated mechanization. Furthermore, connections on the surface of the diaphragm made of paper, resin, etc. cannot be sufficiently pressurized or heated, and the reliability of the connections is extremely poor, which is a quality problem.

In recent years, as demands for the quality of speakers have become increasingly high and demands for improved productivity of speakers have also become stronger, there has been a desire to develop speakers of stable quality that can be produced using automatic machines. SUMMARY OF THE INVENTION In view of the above drawbacks, the present invention provides a speaker that does not increase the total height of the speaker, has excellent quality reliability, and allows wiring to be performed on a flat surface, facilitating automated mechanization of speaker production.

Means for Solving the Problems In order to solve these problems, the present invention provides a flat plate-shaped damper produced by punching, and electrically connects the voice coil and the terminal on the same plane as the damper. Fix the wiring material. However, to prevent the wiring material from coming into contact with the parts where the damper deforms during vibration, the wiring material is fixed at two places on the damper surface: the joint with the voice coil bobbin and the joint with the frame. Further, this wiring material is constructed by shaping a conductor having a certain degree of rigidity into a shape having spring properties.

This configuration allows the wiring material to lie on the same plane as the damper, eliminating the need for extra dimensions for the wiring material drawer, eliminating the need for an increase in the overall height of the speaker, and preventing contact with the damper or diaphragm during vibration. It also does not generate any abnormal noise. Furthermore, by using a wiring material with spring properties, there is no need for the complicated work of pulling out the wiring material with an appropriate amount of allowance, making it extremely easy to produce speakers using automatic machines. Furthermore, since the lead wire of the voice coil and the wiring material can be connected on a flat surface, the reliability of the connection is dramatically improved, and the automatic mechanization of the connection process is extremely easy.

EXAMPLE An example of the present invention will be described below with reference to the drawings. FIG. 2 shows a state in which the speaker damper and the wiring material are fixed in one embodiment of the present invention.

In FIG. 2, 2Q is a damper, which is constructed by punching out a plate-shaped material such as Glass Merchant's epoxy resin or Merchant's diphenol resin. 21 is a wiring material that electrically relays between the voice coil and the terminal. This wiring material 21 is made of an elastic conductor such as phosphor bronze)
, the portion that does not contact the damper 2Q has a zigzag shape. Reference numeral 22 denotes one end of the wiring material 21, which connects the lead wire of the voice coil, and is fixed to the center of the damper 20. 23 is a portion connected to the terminal eyelet of the speaker, and is fixed to the outer periphery of the damper 20. A terminal eyelet 24 is electrically connected to the wiring material 21 and fixed to the outer edge of the damper 20.

A speaker incorporating a damper with wiring material constructed in this manner is shown in FIG. In FIG. 1, a frame 30 is coupled to a magnetic circuit 29 constituted by a plate 26 having a center ball 26, a ring-shaped magnet 27, and a ring-shaped upper plate 28, and a gasket 31 is attached to the peripheral edge of the frame 3o. A diaphragm 32 is fixed with adhesive or the like, and a pobbin 34 around which a voice coil 33 is wound is coupled to the center of the diaphragm 32. The intermediate portion of the pobbin 34 of the voice coil 33 is held by the damper 20 of the present invention, and the voice coil 33 is fitted into the magnetic gap 35 of the magnetic circuit 29 without eccentricity. Moreover, a dust gap 36 is attached to the upper center surface of the diaphragm 32, and the lead wires at the beginning and end of the winding of the voice coil 33 are electrically connected to one end of the wiring material 21 fixed to the damper 20. Wiring material 2
The other end of 1 is configured to be connected to a terminal eyelet 24.

In the speaker configured as described above, the wiring material 21 bends in the vertical direction even when the vibration is applied, but since it has an elastic shape, it has the ability to recover. It also does not generate any sound. Furthermore, since the wiring material 21 has a shape that allows it to move easily in the amplitude direction, the wiring material 21 does not pull on the pobbin 34 of the voice coil 33.

As described above, according to this embodiment, the lead wires at the beginning and end of the voice coil 330 can be connected to the wiring material 21 on a plane, and furthermore, the wiring material 21 can be pulled out to the terminal eyelet 24 on a plane. Moreover, since a relatively hard material such as phosphor bronze can be used for the wiring material 21, it becomes very easy to perform these operations with an automatic machine. Moreover, using automatic machines to connect on a plane is extremely reliable and can dramatically improve the quality of the loudspeaker. In addition, the wiring material 21 has a material thickness of 0.
．． The wiring material 2 is made of phosphor bronze with a thickness of about 2 corals.
1 to the terminal eyelet 24, a gap of about 0.3 is sufficient, and the total height 40 of the speaker does not need to be particularly high.

Effects of the Invention As described above, the present invention includes a portion where a wiring material for electrically connecting the voice coil and the terminal is arranged on the same plane as the flat damper, and a portion where the damper and the voice coil pobbin are joined. By fixing the wiring material at the part where the damper and frame are joined, and by fixing the wiring material in a space where it does not come into contact with the part where the damper flexes during vibration, it has excellent quality reliability and can be produced using automated machinery. It is possible to provide a speaker with extremely high productivity, and its practical effects are impressive.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a speaker in an embodiment of the present invention;
FIG. 2 is a top view of a damper used in the speaker, and FIGS. 3 and 4 are cross-sectional views of a conventional speaker. 20...damper, 21...wiring material, 22...portion connected to voice coil lead wire, 23...portion connected to terminal eyelet, 24...Terminal eyelet, 29
...Magnetic circuit, 30...Frame, 32
...Vibration plate, 33...Voice Koinope 3
4...Bobbin, 35...Magnetic gap 0 Agent's name Patent attorney Toshio Nakao and 1 other person 1st
figure

Claims (1)

[Claims] The wiring material that electrically connects the voice coil and the terminal is placed on the same plane of the damper, which has a flat plate shape and vibrates in a direction perpendicular to the plate surface, and the wiring material that connects the damper and the voice coil bobbin is connected to the damper and the damper. A speaker using a damper with wiring material, in which the wiring material is fixed at the part where the frame is joined, and the wiring material is fixed in a space where it does not come into contact with the part where the damper flexes during vibration.