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DESCRIPTION JP2004282590

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DESCRIPTION JP2004282590
An object of the present invention is to provide a speaker device mainly used for in-vehicle audio
equipment etc., and to provide a speaker device capable of closely contacting a speaker and a
speaker grill with a simple structure. A speaker device according to the present invention has a
structure in which a conically-opened film-like portion 5d is in contact with a ring-shaped rib 12a
provided on a speaker grille. The hardness of the edge 5b can be freely selected and the adhesion
between the speaker grille 12 and the speaker can be selected because the adhesion of the edge
is not only the elasticity of the material of the convex portion of the edge outer edge but also the
elasticity due to the shape by side pressing. It can be done reliably. [Selected figure] Figure 1
Speaker device
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker device used for various audio devices. 2. Description of the Related Art The prior art will
be described with reference to a half sectional view of the loudspeaker apparatus of FIG.
Referring to FIG. 1, reference numeral 1 denotes a field portion of the speaker, which includes an
upper plate 1a, a magnet 1b and a lower plate 1c having a center pole, and the center pole
portion of the upper plate 1a and the lower plate 1c A magnetic gap 9 is formed in the gap
between the two. Further, 2 is a frame coupled to the upper plate 1a, 3 is a voice coil, 4 is a
damper for supporting the voice coil 3, 5 is a voice coil 3 coupled to the magnetic gap at the
inner periphery, and the outer periphery is the frame 2 and It is a combined diaphragm.
Reference numeral 5 a denotes a body portion of the diaphragm 5, and 5 b denotes an edge
coupled to the frame 2. At the outer edge of the edge 5b, a convex portion 5c integrally formed
with the edge 5b is provided. Reference numeral 8 denotes a dust cap coupled to the upper
surface of the body 5 a of the diaphragm 5. Further, 11 is a mounting plate for attaching the
above-mentioned speaker, 12 is a speaker grill for protecting the front surface of the speaker,
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and 12 a is provided on the speaker grill 12 pressed against the convex portion 5 c when the
speaker grill 12 is attached. The ring-shaped rib 13 is a resin clip for connecting the speaker
grille 12 and the mounting plate 11. As described above, the rib 12a of the ribbed speaker grille
12 is pressed against the convex portion 5c of the speaker to mount the speaker, thereby
preventing rattling when the speaker grille 12 is mounted (for example, Patent Document 1).
[Patent Document 1] Japanese Patent Application Laid-Open No. 11-155190 However, the
speaker described above protects the front surface of the speaker after the speaker is attached to
the mounting plate 11. When attaching the grille 12, the ring-shaped rib 12a provided on the
speaker grille 12 is in contact with the convex portion 5c of the outer edge portion of the edge
5b, and by using the elasticity of the material of the convex portion 5c Although the abnormal
sound due to the vibration of the speaker grille 12 is suppressed, since the edge 5 b and the
convex portion 5 c of the outer edge portion are integrally formed, the hardness of the material is
also the same. Therefore, when the edge 5b is hardened for the purpose of changing the sound
quality, the convex portion 5c of the outer edge is also hardened, and as a result, there is a
problem that the speaker grille 12 and the speaker can not be securely intimately attached.
The present invention solves such problems, and provides a speaker device capable of freely
selecting the hardness of the edge and ensuring the close contact of the speaker grille and the
speaker while having the same configuration as the conventional one. It is SUMMARY OF THE
INVENTION In order to solve the above-mentioned problems, a speaker device according to claim
1 of the present invention has a conical sheet shape extending outward to an edge and directed
outward. The speaker grille is mounted such that a part of the speaker grill abuts on the
extended portion, and the material of the convex portion is provided on the outer edge of the
edge in close contact with the speaker grille and the speaker main body. In order to use not only
the elasticity in the thickness direction but also the elastic force as the restoring force of the
conical shape of the conically formed extension, selection of the hardness of the edge without
impairing the close contact between the speaker grille and the speaker body It is possible to
provide a speaker device capable of expanding the degree of freedom (selection of sound
quality). [0012] The invention according to claim 2 of the speaker of the present invention is that
the conically opened angle of the extension portion of the edge according to claim 1 is 30 ° or
more, and the speaker body of the speaker grill It is possible to easily secure the close contact
state at the time of wearing. BEST MODE FOR CARRYING OUT THE INVENTION An embodiment
of a speaker according to the present invention will be described below with reference to FIGS. 1
(a) and 1 (b). In the description, the same parts as those in the prior art will be assigned the same
reference numerals and explanations thereof will be omitted. Embodiment 1 FIG. 1 is a half
sectional view of an embodiment of a speaker device according to the present invention, and FIG.
1 (a) is a front view of a speaker grille, and FIG. 1 (b) is a speaker grille. It shows after wearing.
According to the drawing, the difference from the prior art is that the sheet 5 is extended
integrally with the edge 5 b to provide a sheet-like and conical extension 5 d. By bringing the
side surface of the extending portion 5d into pressure (press) contact with the ring-shaped rib
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12a of the speaker grille 12, the rib 12a and the edge 5 which conventionally rely on the
thickness of the protrusion 5c and the elastic force of the material The close contact is also
utilized by the elastic (restoring) force against the side pressure by the rib 12a of the extension
portion 5d formed conically. With the above configuration, adhesion is made possible by utilizing
elasticity based on not only the elasticity of the material of the extension portion 5 d of the edge
5 b but also the conical shape, thereby selecting the edge material in sound quality design. It is
possible to expand the degree of freedom and to provide a speaker with a sound quality that can
meet the needs of the user.
When the speaker grill 12 is attached to the speaker mounting plate 11 by setting the conicallyopened opening angle A of the extension 5 d to 30 ° or more, the extension 5 d enters the
inside of the rib 12 a Can be prevented, and the workability at the time of mounting can be
improved. Further, in the present invention, by adopting the above-mentioned configuration, the
shape may be any shape that can obtain elasticity without increasing the thickness of the
extending portion 5d as in the conventional protruding portion 5c, and the edge 5b It is also
possible to set the same or substantially the same or thinner. As described above, according to
the present invention, it is possible to provide a speaker apparatus capable of diversifying sound
quality by expanding the degree of freedom in selecting an edge while maintaining close contact
between the speaker grille and the speaker. It is said that. BRIEF DESCRIPTION OF THE
DRAWINGS [FIG. 1] (a) A half sectional view before mounting a speaker grille of an embodiment
of a speaker apparatus according to the present invention (b) a half sectional view after
mounting the speaker grille [FIG. Half cross-sectional view of the speaker device of the speaker
system [Explanation of symbols] 1 field section 2 frame 3 voice coil 5 diaphragm 5a body section
5b edge 5c convex section 9 magnetic gap 11 speaker mounting plate 12 speaker grille 12a rib
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