JP3879527B2 - Speaker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a speaker used in various audio equipment and information communication equipment.
[0002]
[Prior art]
A conventional loudspeaker will be described with reference to FIG.
[0003]
FIG. 5 shows a cross-sectional view of a conventional speaker.
[0004]
According to FIG. 5 , a frame 6 is coupled to a yoke 3 of an internal magnet type magnetic circuit 4 configured by sandwiching a magnetized magnet 1 between an upper plate 2 and a yoke 3, and a terminal 10 is coupled to the frame 6. The diaphragm 7 is bonded to the inner peripheral edge of the frame 6, the voice coil 8 coupled to the diaphragm 7 is coupled so as to fit into the magnetic gap 5 of the magnetic circuit 4, and the lead wire 11 of the voice coil 8 is connected. It was routed to the terminal 10 along the back surface of the diaphragm 7 and connected by soldering.
[0005]
[Problems to be solved by the invention]
The above-mentioned speaker has been developed with the goal of reducing the size and thickness of the speaker. Therefore, if a gold thread wire is attached to the voice coil 8, it is difficult to achieve a reduction in size and thickness due to the volume of the gold thread wire. Since the sound pressure level decreases due to the weight of the wire, it is necessary to take measures by increasing the diaphragm 7. Therefore, the lead wire 11 is directly pulled out and coupled to the terminal 10.
[0006]
However, in the recent market demand for high input resistance, there is a problem that the lead wire 11 of the voice coil 8 is disconnected due to contact with the vicinity of the magnetic gap 5 due to amplitude or bending fatigue.
[0007]
The present invention solves the above-described problems, and provides an excellent speaker capable of realizing high input resistance while reducing the size and thickness.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following configuration.
[0009]
According to the first aspect of the present invention, the connection between the voice coil and the terminal is connected through a flat lead wire inserted in a longitudinal direction in the diaphragm. With this configuration, an effect of preventing disconnection due to the contact of the lead wire with the vicinity of the gap can be obtained. In addition, the amplitude fatigue of the lead wire generated due to the vertical vibration of the voice coil is reduced by being inserted into the diaphragm, and further, the amplitude fatigue due to unnecessary resonance in the lead wire alone is eliminated. It is possible to obtain an operational effect of improving the input resistance.
[0010]
Furthermore, the arrangement according to the flat wire of the lead wire, as possible is possible to improve the space factor when the insert lead to the diaphragm.
[0011]
Furthermore, by arranging the rectangular wires inserted in the diaphragm in the vertical direction, the effect of improving the strength of the diaphragm, improving the bending disconnection strength by reducing unnecessary resonance, and achieving high input resistance can be obtained.
[0012]
According to the second aspect of the present invention, the lead wire is insert-molded when the diaphragm is injection-molded. With this configuration, it is possible to perform injection molding of a diaphragm in which a lead wire is insert-molded even in the absence of a voice coil, and it is possible to produce each part independently, thereby obtaining an effect of improving productivity.
[0013]
According to the third aspect of the present invention, the lead wire is insert-molded during the injection molding of the diaphragm base material, and then the diaphragm is vacuum-molded or press-molded. With this configuration, it is possible to produce a diaphragm in which a lead wire is insert-molded even in the absence of a voice coil, and it is possible to produce each component independently, thereby obtaining an effect of improving productivity.
[0014]
According to a fourth aspect of the present invention, a wire obtained by insulating a core material mainly composed of oxygen-free copper with a modified polyamide film having a hardness of 120 or less is used as a lead wire. With this configuration, the bending and breaking strength of the lead wire of the voice coil is improved, and the effect of achieving high input resistance can be obtained.
[0015]
The invention according to claim 5 of the present invention uses as a lead wire a wire obtained by insulating a core material mainly composed of a binary alloy of oxygen-free copper and silver with a modified polyamide film having a hardness of 120 or less. . With this configuration, the bending and breaking strength of the voice coil lead wire is further improved, and an effect of achieving high input resistance can be obtained.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0017]
(Embodiment 1)
In the following, the first, fourth , and fifth aspects of the present invention will be described with reference to the first embodiment.
[0018]
FIG. 1 is a sectional view of a speaker according to the present invention, and FIG. 2 is a partial sectional view of a diaphragm in which lead wires are insert-molded.
[0019]
According to FIG. 1, a frame 26 is coupled to a yoke 23 of an internal magnet type magnetic circuit 24 configured by sandwiching a magnetized magnet 21 between an upper plate 22 and a yoke 23, and a terminal 30 is coupled to the frame 26. ing. Then, the inner peripheral edge portion of the frame 26, shown in FIG. 2, rectangular bonding the diaphragm 27 which is insert-molded leads 31 advance in the longitudinal direction arrangement, the voice coil 28 coupled to the diaphragm 27 the magnetic circuit 24 The lead wire 31 of the inserted voice coil 28 is soldered to the terminal 30.
[0020]
With this configuration, since the lead wire 31 is inserted into the diaphragm 27, disconnection due to contact with the vicinity of the magnetic gap 25 can be prevented, and the lead wire 31 generated with respect to the vertical vibration of the voice coil 28 can be prevented. In addition, since the amplitude fatigue due to unnecessary resonance in the lead wire 31 alone is eliminated, the bending disconnection strength can be improved and high input resistance can be achieved.
[0021]
Further, Ru can improve the space factor when inserted to the diaphragm 27 by the use of flat wire.
[0022]
Further, Ri by the longitudinal arrangement of the flat wire, the strength of the diaphragm 27 to improve, to improve the bending breaking strength due to unwanted resonance reduction, it is possible to increase the input resistance of.
[0023]
The lead wire 31 is inserted into the diaphragm 27 as described above, in addition to the method in which the lead wire 31 of the voice coil 28 is insert-molded in the injection molding of the diaphragm 27 in a separate process, as described above. There is also a method of insert-molding the wire material of the voice coil, that is, the magnet wire as the lead wire 31 in the absence of the wire.
[0024]
Further, when it is desired to improve the strength of the lead wire 31, a core material mainly composed of oxygen-free copper or a binary alloy of oxygen-free copper and silver is used as described in claims 4 and 5. There are also a method of using a wire material insulated with a modified polyamide film having a hardness of 120 or less as a lead wire, and a method of insert molding a gold thread wire. Of course, in these cases, a connection step between the voice coil 28 and the lead wire 31 is required, but the lead wire 31 can be insert-molded into the diaphragm 27 even in the absence of the voice coil 28, and the productivity is greatly improved. The input resistance characteristics can be improved.
[0025]
(Embodiment 2)
The second aspect of the present invention will be described below with reference to the second embodiment.
[0026]
FIG. 3 is a perspective view of the diaphragm 27 in which the lead wire 31a of the present invention is insert-molded. According to FIG. 3 , when the diaphragm 27 is injection molded, two lead wires 31a are inserted and molded. At this time, two inserts are inserted radially from the coupling portion of the voice coil 28 to the outer peripheral portion of the diaphragm 27, and the voice coil 28 and the inserted lead wire 31a are soldered in the speaker assembling process. Connect by attaching.
[0027]
With this configuration, it is possible to perform injection molding of the diaphragm 27 in which the lead wire 31a is insert-molded even in the absence of the voice coil 28, so that each part can be produced independently, and productivity can be improved.
[0028]
(Embodiment 3 )
Hereinafter, with reference to the third embodiment will be described the invention described in particular claim 3 of the present invention.
[0029]
4 (a) is a plan view of a state where the lead wire 31a is insert-molded during the injection molding of the diaphragm substrate 27a, (b), (c ) vacuum forming or press-molding the diaphragm 27 by using the substrate 1 is a perspective view configured as described above. According to FIG. 4 , when the diaphragm base material 27a is injection-molded, two lead wires 31a are paired in a long state, or one is inserted and molded. Thereafter, the diaphragm 27 in which the lead wire 31a is insert-molded is vacuum-formed or hot press-molded, and the inner and outer diameters are removed to obtain a finished product of the diaphragm 27. At this time, when two pairs are inserted, there are a total of four lead wires 31a in the diaphragm 27. Usually, two of them are used, and the remaining two are not used. Can be assembled. Therefore the remaining two that exists in two that the symmetrical position using a very effective in order to better the weight balance of the diaphragm 27.
[0030]
In addition, when one is inserted, the diaphragm 27 has a total of two lead wires 31a and is positioned in opposite directions with the voice coil 28 coupling portion as the center, so that 180 degrees after the voice coil 28 is connected. The terminal 30 is arranged in the direction. This is also very effective in improving the weight balance of the diaphragm 27 as described above.
[0031]
With this configuration, it is possible to produce the diaphragm 27 in which the lead wire 31a is insert-molded even in the absence of the voice coil 28, so that each part can be produced independently, and productivity can be improved. It is also very effective in improving the weight balance of the diaphragm 27 and preventing gap defects and high gap defects.
[0032]
【The invention's effect】
As described above, in the speaker of the present invention, the connection between the voice coil and the terminal is connected via the flat lead wire inserted in the diaphragm in the vertical direction . With this configuration, it is possible to prevent disconnection due to the lead wire coming into contact with the vicinity of the magnetic gap, and the fatigue of the lead wire due to the vertical vibration of the voice coil is reduced by being inserted into the diaphragm. In addition, since the amplitude fatigue due to unnecessary resonance in the lead wire alone is eliminated, the bending disconnection strength is improved and high input resistance can be achieved.
[0033]
As described above, the present invention can provide an excellent speaker capable of improving its performance such as high input resistance, and its industrial value is very large.
[Brief description of the drawings]
Sectional view of a speaker according to an embodiment of the invention; FIG sectional view of the diaphragm in one embodiment of the present invention; FIG 3 shows (a) (b) is one embodiment of the present invention, respectively perspective view of the diaphragm according to embodiment 4 (a) is a plan view (b) (c) a perspective view of each diaphragm FIG. 5 is a cross-sectional view of a conventional speaker diaphragm substrate in an embodiment of the present invention [Explanation of symbols]
21 Magnet 22 Upper plate 23 Yoke 24 Magnetic circuit 25 Magnetic gap 26 Frame 27 Diaphragm 28 Voice coil 30 Terminal 31 Lead wire

Claims (5)

A frame coupled to the magnetic circuit, a diaphragm coupled to the frame, a voice coil coupled to the diaphragm and a portion thereof disposed in a magnetic gap of the magnetic circuit, and a frame coupled to the frame a loudspeaker comprising a terminal, wherein the voice coil and the terminals are connected constituted by a lead wire which is inserted into the diaphragm Rutotomoni, the lead wire is composed of flat wire, insert molding the rectangular wire in a longitudinal direction speaker that will be configured.   The speaker according to claim 1, wherein the diaphragm is formed by insert molding of a lead wire at the time of injection molding.   The speaker according to claim 1, wherein the diaphragm is formed by insert molding a lead wire at the time of injection molding of the base material, and then vacuum molding or press molding. The speaker according to any one of claims 1 to 3 , wherein a wire material obtained by insulating a core material mainly composed of oxygen-free copper with a modified polyamide film having a hardness of 120 or less is used as a lead wire. According to any one of claims 1 to 3 with a wire that is insulated by oxygen-free copper and modified polyamide film hardness 120 below the core material mainly composed of binary alloy of silver as a lead wire Speaker.

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