JP3787992B2 - Speaker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elongated speaker used in video / audio equipment and the like.
[0002]
[Prior art]
The conventional speaker 6 will be described with reference to FIG. FIG. 6 is a perspective view of a vibration member which is a main part of a conventional elongated speaker, and FIG. 7 is a cross-sectional view showing a partially enlarged damper fixing part which is the main part. According to the figure, 1 is a saddle-shaped diaphragm having a slim elongated shape and having a linear portion in the longitudinal direction, and 2 is a damper joint provided in a pair intersecting with the inner wall of the diaphragm 1 in the longitudinal direction. Ribs 3 are dampers composed of elongated and bowl-shaped rolls provided with linear portions on two sides in the longitudinal direction, and 4 is an elongated edge joined to the outer peripheral portion of the diaphragm 1. Reference numeral 5 denotes a frame to which the damper 3 is fixed.
[0003]
The operation of the support portion in the conventional elongated speaker configured as described above will be described. The other end face of the damper 3 joined to the end face of the damper joining rib 2 is fixed to the frame 5, and the diaphragm 1 is fixed to a frame 5 through an edge 4 to constitute a speaker support system. Here, when the vibration plate 1 swings upward, the damper 3 is pulled by the damper joining rib 2 and a force acts in the direction of arrow B with the A portion as a fulcrum, and the damper 3 is deformed and moved to the position 3a. Will do.
[0004]
[Problems to be solved by the invention]
However, the conventional speaker has the following problems. That is, the damper 3 is applied with a force in the direction C with the A portion as a fulcrum, and the A portion is always bent with respect to the amplitude of the diaphragm 1.
[0005]
As a result, the fixed portion between the damper 3 and the frame 5 is very small as compared with the outer peripheral fixed portion of the edge 4 supporting the diaphragm 1, so that the bending fatigue is concentrated on this portion. Had. That is, if the lowest resonance frequency of the speaker is lowered too much, the A portion of the damper 3 is broken, and there is a limit to the low frequency reproduction band. Furthermore, there is a problem that the same phenomenon occurs even when the input resistance of the speaker is set high.
[0006]
The present invention aims to solve the above-described problems.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, a speaker according to the present invention is coupled to a damper joint rib coupled to an elongated diaphragm coupled to a voice coil that fits in a magnetic gap of a magnetic circuit, and to the other end of the damper joint rib. Between the damper composed of a plurality of slender and bowl-shaped rolls provided with linear portions on at least two sides in the longitudinal direction and the frame to which the damper is fixed, the outer peripheral linear portion of the damper and the roll portion A damper adhering spacer to which the rising part is fixed is provided separately from the frame, and is fixed to the frame.This structure extends the life of the speaker, improves the low frequency characteristics, It is intended to improve input.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
According to a first aspect of the present invention, there is provided a speaker having a damper joint rib coupled to an elongated diaphragm coupled with a voice coil that fits into a magnetic gap of a magnetic circuit, and at least a longitudinal joint coupled to the other end of the damper joint rib. The outer peripheral linear portion of the damper and the rising portion of the roll portion between a damper composed of a plurality of elongated and bowl-shaped rolls provided with linear portions on two sides in the direction and a frame to which the damper is fixed DOO is provided a spacer for a damper bond that is secured separately from the said frame, with the construction for fixing to the frame, improving failure strength of the damper fixing unit, the expansion of the life of the speaker, the bass characteristics It is possible to improve and improve input resistance.
[0009]
Hereinafter will be described with reference to FIG. 1 to FIG. 5 for an embodiment of the present invention. In the description, the same parts as those in the prior art will be described with the same numbers.
[0010]
(Embodiment 1)
1 is a plan view of an embodiment of the speaker of the present invention, FIG. 2 is a sectional view taken along the line DD in FIG. 1, FIG. 3 is a plan view of the same development example, and FIG. It is EE sectional drawing, FIG. 5 is an expanded sectional view of the damper adhering part which is a principal part.
[0011]
According to the figure, reference numeral 1 denotes a slim-shaped diaphragm having a slim shape and having a linear portion in the longitudinal direction, and 2 a plurality of dampers provided in the direction intersecting with the inner wall of the diaphragm 1 in the longitudinal direction. Joining ribs 3 are dampers composed of elongated and bowl-shaped rolls provided with linear portions on two sides in the longitudinal direction, 4 is an elongated edge joined to the outer periphery of the diaphragm 1, and 5 is an edge 4 An elongated frame 6 fixedly supporting the outer periphery of the frame, 6 is a spacer provided on a separate body from the frame fixed to the frame 5 and fixed to the frame 5 and the linear portion of the outer periphery of the damper 3 and the rising portion of the roll. An elongated voice coil 8 joined to the lower portion of the diaphragm 1 is a magnetic circuit into which the voice coil 7 is inserted.
[0012]
The operation of the support portion in the speaker of the embodiment configured as described above will be described in detail. The end surface of the damper joint rib 2 provided at the lower portion of the diaphragm 1 is joined to the center portion of the damper 3, and the damper 3 When fixing the other end of the frame 5 and the frame 5, the outer peripheral linear part of the damper 3 and the rising part of the roll part are fixed via a spacer 6 provided separately from the frame 5. The outer peripheral portion of the diaphragm 1 is fixed to the frame 5 via the edge 4.
[0013]
Here, when the diaphragm 1 has an amplitude in the upward direction, the damper. 3 damper 3 is displaced while being deformed in the direction of being pulled to the damper joining rib 2 arrow F, but the damper shaped like a 3b, the frame By being configured to be fixed to the frame 5 via a spacer 6 provided separately from 5, no bending force is applied to the A portion of the rising portion of the damper 3, and the damper 3 is always displaced in the G direction. Power will be added.
[0014]
That is, the displacement of the damper 3 is absorbed by the entire roll portion of the damper 3, and the fatigue at the time of large amplitude is reduced, so that the speaker can be extended in life, improved in low frequency characteristics, and improved in input resistance Can be provided.
[0015]
FIGS. 3 and 4 are development examples of the present embodiment, which uses a cone-shaped diaphragm, and 9 is a cone shape having a linear portion in the longitudinal direction, which is configured in a slim shape. , 10 is a dust cap, 11 is a round voice coil joined to the center of the diaphragm 9, and 12 is a magnetic circuit into which the voice coil 11 is inserted.
[0016]
Since the operation of the support portion and the effect of the spacer 6 provided separately from the frame 5 are the same as those of the embodiment of FIGS. 1 and 2, description thereof will be omitted.
[0017]
【The invention's effect】
As described above, the present invention is an elongated speaker, in which a rising portion of a roll portion of a damper composed of a plurality of elongated and bowl-shaped rolls having linear portions on two sides in the longitudinal direction is defined as a frame. By adopting a structure that is fixed to a part of the frame via a separate spacer, it is possible to greatly improve the life of the damper, thereby improving input resistance and extending the low-frequency reproduction band. Can be realized.
[Brief description of the drawings]
FIG. 1 is a plan view of a speaker according to an embodiment of the present invention. FIG. 2 is a sectional view of the same side. FIG. 3 is a plan view of the same development example. FIG. 4 is a sectional view of the same. FIG. 6 is a perspective view of a vibration member which is a main part of a conventional elongated speaker. FIG. 7 is an enlarged cross-sectional view of a damper fixing part which is the main part.
DESCRIPTION OF SYMBOLS 1 Diaphragm 2 Damper joining rib 3 Damper 4 Edge 5 Frame 6 Spacer 9 Diaphragm

Claims (1)

A damper joint rib coupled to an elongated diaphragm coupled with a voice coil that fits into a magnetic gap of a magnetic circuit, and a linear portion provided on at least two sides in the longitudinal direction coupled to the other end of the damper joint rib wherein a damper composed of a bowl-like rolls in a plurality of elongated, the spacer damper adhesion and rising portion are fixed the outer peripheral straight portion and the roll portion of the damper between the frame for fixing the damper A speaker provided separately from the frame .

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