JP3901012B2 - 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 speaker will be described with reference to FIG.
[0003]
FIG. 2 is a sectional view of a conventional speaker.
[0004]
As shown in FIG. 2, the magnetized magnet 1 is sandwiched between the upper plate 2 and the yoke 3 to constitute the magnetic circuit 4. A frame 6 is coupled to the yoke 3 of the magnetic circuit 4, and an edge 10 located on the outer periphery of the diaphragm 7 is bonded to the peripheral edge of the frame 6. The bobbin 8a of the voice coil 8 is coupled to the diaphragm 7, and the voice coil 8 is held in the center by a damper 9 coupled to the frame 6 so that the voice coil 8 fits into the magnetic gap 5 of the magnetic circuit 4.
[0005]
[Problems to be solved by the invention]
The above-described speaker has a problem that it has a large number of parts and cannot cope with a further price reduction request, particularly in a demand for price reduction from the market of small speakers.
[0006]
The present invention reduces the number of parts and reduces costs.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following configuration.
[0008]
In the invention according to claim 1 of the present invention, the edge, the diaphragm, the bobbin, and the damper are made of the same material for reducing the number of parts, and are formed of an integral product by resin injection molding or vacuum molding of a sheet, The edge is configured by forming a corrugated corrugation in the extending direction toward the frame side of the diaphragm, and the damper is configured by forming the corrugated corrugation without changing the direction in the extending direction toward the lower plate side of the bobbin. The lower plate is coupled to the same surface as the magnet coupling surface . With this configuration, it is possible to reduce the number of parts and realize cost reduction, and it is possible to improve the center holding performance and simplify the production method.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0010]
(Embodiment 1)
Hereinafter, the first aspect of the present invention will be described using the first embodiment.
[0011]
FIG. 1 shows a cross-sectional view of the speaker of this embodiment.
[0012]
According to FIG. 1, a frame 26 is coupled to an upper plate 22 of a magnetic circuit 24 configured by sandwiching a magnetized magnet 21 between an upper plate 22 and a lower plate 23. At the periphery of the frame 26, an edge 30 is provided on the outer periphery of the diaphragm 27. The edge 30 is corrugated in the extending direction toward the frame side of the diaphragm 27, and one side of the diaphragm 27 is opposite to the edge 30. The voice coil 28 and the bobbin 28a are provided in the magnetic gap 25 of the magnetic circuit 24, and the bobbin 28a is opposite to the diaphragm 27 on the opposite side to the extending direction toward the lower plate side of the bobbin without changing the direction. A damper 29 provided with corrugation in a corrugated shape is provided, and is coupled to the same surface as the coupling surface of the magnet 21 of the lower plate 23. Here, the edge 30, the diaphragm 27, the bobbin 28a, and the damper 29 are made of the same material and formed as an integral part. This is constituted by resin injection molding or sheet vacuum molding.
[0013]
With this configuration, it is possible to shorten the production man-hour by reducing the number of parts and to simplify the production method, and to realize a great cost reduction.
[0014]
Moreover, in this way, by constituting integrated edge 30 and the diaphragm 27 and the bobbin 28a and the damper 29, it is possible to prevent the eccentricity of the edge 30 and the diaphragm 27 and the bobbin 28a and the damper 29, the defective gap speaker Can also be reduced.
[0015]
Furthermore, by attached a damper 29 in the lower plate 23, when compared to when bound to the frame 26 can be supported by a damper 29 below the voice coil 28, the support position at the edge 30 Since a large distance can be secured, the rolling restraining force can be increased, and the center holding performance of the voice coil 28 can be improved.
[0016]
【The invention's effect】
As described above, in the speaker of the present invention, the edge, the diaphragm, the bobbin, and the damper are integrally formed.
[0017]
With this configuration, it is possible to shorten the production man-hour by reducing the number of parts and to simplify the production method, and to realize a great cost reduction.
[0018]
Further, by integrating the edge, the diaphragm, the bobbin, and the damper in this way, it is possible to prevent the edge, the diaphragm, the bobbin, and the damper from being eccentric, and to reduce the gap defect of the speaker.
[0019]
Furthermore, by connecting the damper to the lower plate without changing the direction, it can be supported by the damper below the voice coil compared to when it is connected to the frame, and the distance from the support position at the edge Therefore, the rolling restraining force can be increased, and the center holding performance of the voice coil can be improved.
[0020]
Thus, the present invention can provide an excellent speaker capable of greatly reducing cost and gap defects, and its industrial value is very large.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a speaker according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of a conventional speaker.
21 Magnet 22 Upper plate 23 Lower plate 24 Magnetic circuit 25 Magnetic gap 26 Frame 27 Diaphragm 28 Voice coil 28a Bobbin 29 Damper 30 Edge

Claims (1)

A frame, a diaphragm whose outer peripheral portion is coupled to the frame via an edge, and a bobbin coupled to the diaphragm, and a part of which is formed in a magnetic gap of a magnetic circuit including a magnet, an upper plate, and a lower plate A speaker comprising a disposed voice coil and a damper that holds the middle part of the voice coil, wherein the edge, the diaphragm, the bobbin, and the damper are made of the same material and are made of resin to reduce the number of parts. The edge is configured by forming a corrugated corrugation in an extending direction toward the frame side of the diaphragm, and the damper is formed on the lower plate side of the bobbin. Corrugated without changing direction in the extending direction toward It is configured to form a Rugeshon, bound to the binding surface and the same surface of the magnet of the lower plate speaker.

Images