JP3911736B2 - Speaker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a speaker having an elongated structure such as an ellipse, an ellipse, a rectangle, or a track having a top view of a diaphragm used in various acoustic devices.
[0002]
[Prior art]
A conventional speaker will be described with reference to FIGS. 7, 8, and 9 show a conventional track-type speaker. FIG. 7 is a side sectional view in the major axis direction, FIG. 8 is a sectional view in the minor axis direction, and FIG. 9 is a state without a diaphragm. FIG.
[0003]
According to the figure, a frame 6 is coupled to an upper plate 2 of a magnetic circuit 4 constituted by sandwiching a magnet 1 with an upper plate 2 and a lower plate 3, and a cone 7 is clamped to the peripheral portion of the frame 6 by an edge 8. The diaphragm 9 having the above-described structure is bonded, and the middle portion of the voice coil 10 for driving the diaphragm 9 is held at the center by the circular damper 11 and is fitted in the annular magnetic gap 5 of the magnetic circuit 4. The dust cap 12 is bonded to the upper surface of the voice coil 10.
[0004]
[Problems to be solved by the invention]
However, this type of conventional speaker has a performance disadvantage affected by the slim shape of the track shape, so it is difficult to design a high input resistance and high linearity because the amplitude of the vibration system cannot be secured. It had the problem of being.
[0005]
The reason for this is that it is usually the damper that greatly affects the amplitude of the vibration system of the speaker, and since the shape of this type of speaker is elongated, the outer dimension of this damper is the dimension in the minor axis direction of the track type. This is because a damper having a large outer dimension cannot be used. Therefore, since it is not possible to secure a large amplitude of the vibration system, it is difficult to design a high input resistance and a high linearity.
[0006]
An object of the present invention is to solve such a conventional problem and to provide an excellent speaker capable of achieving high input resistance and high linearity.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, a speaker of the present invention includes a magnetic circuit having a magnetic gap, a frame coupled to the magnetic circuit, a peripheral edge coupled to the frame, and an inner circumference partially inserted into the magnetic gap. The damper comprises a slender diaphragm coupled to a voice coil and a damper . The dampers are respectively disposed on both sides of the voice coil in the major axis direction of the diaphragm, and one end of the diaphragm is disposed on the frame. And a two-piece damper with the other end connected to the vicinity of the outer circumference in the major axis direction, or the inner circumference is coupled to the voice coil and the outer circumference is coupled to the frame, and the corrugation in the major axis direction is It is composed of a minor axis of the roll-type corrugation, which is constituted by a damper with reduced rigidity in the short radially disposed slits, these configurations To be able to secure a large amplitude of the oscillation system of the more vibration plate or the like, and makes it possible to provide a speaker which attained linearity excellent ones and high input tolerance of the frequency characteristics.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, a magnetic circuit having a magnetic gap, a frame coupled to the magnetic circuit, a periphery is coupled to the frame, and an inner periphery is partially inserted into the magnetic gap. An elongated diaphragm coupled to the voice coil and one end of the diaphragm disposed on both sides of the voice coil in the major axis direction of the diaphragm, and the other end coupled to the vicinity of the outer circumference of the frame in the major axis direction and those composed of a two-piece damper, the damper supporting the diaphragm, the inner periphery near one end vibration plate and the other end was 2-piece coupled to the major axis direction of the outer periphery near neighbor of the frame, The restriction in the minor axis direction is received only at the coupling part with the frame near the outer periphery, so that the amplitude of the vibration system such as the diaphragm can be secured large, and the linearity of the frequency characteristics is excellent and high input resistance is achieved. Figure And it is intended to enable the provision of a speaker.
[0009]
According to a second aspect of the present invention, a magnetic circuit having a magnetic gap, a frame coupled to the magnetic circuit, a periphery is coupled to the frame, and an inner periphery is partially inserted into the magnetic gap. It is composed of a diaphragm coupled to the voice coil, an inner circumference coupled to the voice coil and an outer circumference coupled to the frame, and a corrugation in the major axis direction and a roll corrugation in the minor axis direction, and provided with a slit. Since it is composed of a damper with reduced rigidity in the minor axis direction, the restriction by the damper in the minor axis direction can be relaxed, and the amplitude of the vibration system such as the diaphragm can be ensured as in the first aspect. Therefore, it is possible to provide a speaker having excellent frequency characteristic linearity and a speaker with high input resistance.
[0010]
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0011]
(Embodiment 1)
An embodiment according to the first aspect of the present invention will be described with reference to the first embodiment.
[0012]
1 is a side sectional view in the major axis direction of a track-type speaker according to an embodiment of the present invention, FIG. 2 is a side sectional view in the minor axis direction, and FIG. 3 is a state in which the diaphragm is removed. It is a top view.
[0013]
According to the figure, a frame 26 is coupled to an upper plate 22 of a magnetic circuit 24 constituted by sandwiching a magnet 21 with an upper plate 22 and a lower plate 23, and a cone 27 is clamped to an edge portion of the frame 26 by an edge 28. The diaphragm 29 having the above-described configuration is bonded while the center of the diaphragm 29 is held by two pieces of dampers 31A and 31B, and the voice coil 30 for driving the diaphragm 29 is attached to the annular magnetic gap 25 of the magnetic circuit 24. The dust cap 32 is bonded to the upper surface of the voice coil 30 so as to be fitted.
[0014]
The dampers 31A and 31B will be described in more detail. The dampers 31A and 31B are arranged at symmetrical positions on both sides in the major axis direction of the diaphragm 29 with the voice coil 30 as the center, and one end of the diaphragm 29 is disposed on the frame 29. the other end in the vicinity of the outer periphery of the major axis direction of 26 is shall such a two-piece structure joined. At this time, the dampers 31A and 31B are separated from the frame 26 by the slit 33 on the short diameter side of the frame 26, and the coupling between the dampers 31A and 31B and the short diameter side of the frame 26 is performed through the coupling portion with the long diameter side. It has become only.
[0015]
As described above, since the dampers 31a and 31B of the present embodiment only receive the restriction on the short diameter side of the frame 26 through the coupling portion on the long diameter side, the amplitude of the diaphragm 29 is ensured to be large, Even in the case of a slim and slender speaker, it is possible to achieve high input resistance and high linearity without being affected by the dimension in the short diameter direction.
[0016]
By making the corrugation shape of the dampers 31A and 31B into an arc shape, rolling of the diaphragm 29 can also be suppressed.
[0017]
(Embodiment 2)
An embodiment according to the second aspect of the present invention will be described with reference to the second embodiment.
[0018]
4 is a side sectional view in the major axis direction of a track-type speaker according to another embodiment of the present invention, FIG. 5 is a side sectional view in the minor axis direction, and FIG. 6 is a diagram in which the diaphragm is removed. FIG.
[0019]
According to the figure, a frame 126 is coupled to an upper plate 122 of a magnetic circuit 124 formed by sandwiching a magnet 121 between an upper plate 122 and a lower plate 123, and a cone 127 is clamped by an edge 128 on the periphery of the frame 126. A cylindrical voice coil 130 whose upper surface is coupled to the outer periphery of the track-shaped diaphragm 129 and whose inner periphery is fitted into an annular magnetic gap 125 formed in the magnetic circuit 124. The damper 131 is coupled between the frame 126 and the voice coil 130 below the diaphragm 129, the voice coil 130 is supported by the damper 131, and the dust cap 132 is bonded onto the voice coil 130. What constitutes a speaker A.
[0020]
As is apparent from FIG. 6, the damper 131 has a flat voice coil joint 131C whose inner periphery is coupled to the voice coil 130, and extends from the voice coil joint 131C in the major axis direction of the diaphragm 129. A wave-type corrugation part 131A coupled to the frame 126 and a roll-type corrugation part 131B extending from the voice coil joint part 131C via the slit 131D and coupled to the frame 126 in the minor axis direction of the diaphragm 129 are configured. The slit 131D weakens the rigidity in the minor axis direction, relaxes the restriction in the minor axis direction of the damper 131, and ensures a large amplitude of the vibration system such as the diaphragm 129, and is excellent in frequency characteristic linearity. And a speaker with high input resistance can be provided.
[0021]
【The invention's effect】
As described above, the present invention has a two-piece configuration in which dampers are arranged on both sides of the voice coil in the major axis direction of the diaphragm, and one end is coupled to the diaphragm and the other end is coupled to the outer circumference in the major axis direction of the frame. Or, the inner circumference is connected to the voice coil and the outer circumference is connected to the frame, and it is composed of a corrugation in the major axis direction and a roll corrugation in the minor axis direction, and a slit is provided to reduce the rigidity in the minor axis direction. With this configuration, it is possible to provide a diaphragm that can ensure a large amplitude of the diaphragm , is excellent in linearity of frequency characteristics, and has an elongated speaker with high input resistance.
[Brief description of the drawings]
1 is a side sectional view in the major axis direction of a speaker according to an embodiment of the present invention. FIG. 2 is a side sectional view in the minor axis direction. FIG. 3 is a top view in a state where the diaphragm is removed. Side sectional view in the major axis direction of the other embodiment [FIG. 5] Side sectional view in the minor axis direction [FIG. 6] Top view with the diaphragm removed [FIG. 7] Major speaker in the major axis direction Side sectional view of the same [Fig. 8] Side sectional view of the same minor axis direction [Fig. 9] Top view with the diaphragm removed [Explanation of symbols]
24,124 Magnetic circuit 25,125 Magnetic gap 26,126 Frame 29,129 Diaphragm 30,130 Voice coil 31A, 31B Damper 131 Damper

Claims (2)

A magnetic circuit having a magnetic gap, a frame coupled to the magnetic circuit, an elongated diaphragm coupled to a voice coil having a peripheral edge coupled to the frame and an inner circumference partially inserted into the magnetic gap; major axis direction of the respectively arranged on both sides of the voice coil one end to the diaphragm of the diaphragm, a speaker composed of a two-piece damper major axis direction of the outer periphery at the other end is coupled to the frame. A magnetic circuit having a magnetic gap, a frame coupled to the magnetic circuit, an elongated diaphragm coupled to a voice coil having a peripheral edge coupled to the frame and an inner circumference partially inserted into the magnetic gap; The inner circumference is coupled to the voice coil and the outer circumference is coupled to the frame, and is composed of a corrugation in the major axis direction and a roll corrugation in the minor axis direction, and a slit is provided to reduce the rigidity in the minor axis direction. A speaker composed of a damper.

Images