JP3638045B2 - Speaker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a speaker which is a kind of audio equipment.
[0002]
[Prior art]
The speaker is attached to an attachment part or a baffle plate through a frame. That is, generally, a circular attachment hole is formed in the flange of the frame, and a speaker is attached by inserting a screw into the attachment hole and tightening it to fix it to a baffle plate or the like. In this case, the mounting surface is not flat or the flange may be deformed depending on the tightening state.
[0003]
For this reason, for example, FIG. 4 shows Japanese Utility Model Publication No. 62-112293. In the case where a slit 21 for preventing deformation is formed in the frame 20 and fixed to the mounting portion with screws 22 as shown in FIG. There is one in which deformation is absorbed by the slit 21.
[0004]
[Problems to be solved by the invention]
However, at present, as shown in FIGS. 4 and 5, in addition to the simple flat shape of the flange mounting part, there are many ways to mount it that are devised in terms of workability and strength. There is a type in which a part of the flange is raised to form a mounting portion. However, in this type, there is a situation in which there is no deformation prevention means.
[0005]
The present invention has been proposed in view of the above points. The object of the present invention is to raise the mounting portion of the flange of the frame, fold the end portion outward substantially in the horizontal direction, and install it there. It is an object of the present invention to provide a speaker provided with a means for preventing deformation during attachment.
[0006]
[Means for Solving the Problems]
This invention Oite the speaker forming a mounting portion having a respective corner to form a raised portion standing by bending the rear side, and the mounting hole by bending the ends on the outside of the frame , in the central portion of the bent portion between the rising portion and the mounting portion, and along the bend portion forms a slit bets, the head of the screw for insertion have been attached to the mounting hole so according to slit In addition, the above-mentioned object is achieved by forming the attachment hole in the attachment portion .
[0007]
Further, the bent portion of the base of the rising portion, have achieved the above object by forming a slit bets along this bent portion.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view of a speaker and mounting parts according to the present invention. In FIG. 1, reference numeral 1 denotes a track-shaped or elliptical speaker. As is well known, the speaker 1 includes a diaphragm 2, and the outer periphery of the diaphragm 2 is It is attached and fixed to the frame 3 via a gasket or the like (not shown). In addition, a voice coil (not shown) is provided in the center, and the voice coil is provided in a magnetic gap formed in the field magnet portion 4 so as to vibrate via a damper (not shown). In addition, the field part 4 is comprised by the yoke, the magnet, the plate, etc. as is well known.
[0009]
The frame 3 has a substantially rectangular shape, and at the four corners of the flange 5 formed on the outer periphery, rising portions 6 are formed that are bent substantially at right angles to the frame body that is substantially rectangular toward the back side. The end portion is bent at a substantially right angle toward the outside to form a substantially triangular mounting portion 7 having a mounting hole 7a.
[0010]
A slit 8 a is formed at the center of the bent portion 8 at the boundary between the rising portion 6 and the mounting portion 7.
[0011]
The slit 8 a serves to absorb deformation of the frame 3 when the screw 9 is inserted into the mounting hole 7 a and the screw 9 is tightened into the screw hole of the cylindrical boss 11 of the mounting part 10 to mount the speaker 1. Make.
[0012]
That is, there is no problem as long as the four bosses 11 and the corresponding mounting portions 7 are evenly balanced, but there are variations in the joint surface, and the frame 3 may be twisted and deformed depending on the tightening force of the screws 9. However, the torsional deformation derived from the periphery of the screw by screw tightening is absorbed by the slit 8a, that is, the deformation is prevented or alleviated.
[0013]
FIG. 2 shows a partial cross-section in the attached state of the portion indicated by arrow A in FIG. The present invention is characterized in that the positional relationship between the mounting hole 7a and the slit 8a is set so that the head 9a of the screw 9 is engaged with the slit 8a.
[0014]
If the head portion 9a of the screw 9 is engaged with the slit 8a in this way, the attachment portion 7 of the frame 3 is not pushed by the screw 9, and deformation can be prevented, and the space between the attachment hole 7a and the slit 8a can be prevented. If deformation occurs in the frame portion, it can be quickly released to the slit 8a side.
[0015]
FIG. 3 shows another embodiment of the present invention. In this example, the slit 12a is also formed in the bent portion 12 at the base of the rising portion 6, and the number of the slits is two, and the deformation that could not be absorbed by the slit 8 on the mounting portion 7 side is corrected. It is characterized in that it is absorbed by the slit 12a on the side and the deformation is more effectively prevented.
[0016]
In the present invention, the case where the speaker 1 is attached to the attachment component 10 has been described, but it is needless to say that the speaker 1 may be attached to a baffle plate or the like.
[0017]
【The invention's effect】
In the present invention, as described above, raised by bending a portion of the flange, and Oite the speaker with the frame of the type with the mounting portion by bending the end portion, the bent portion forming a slit bets, and since the head portion of the screw when screwing is rests on the slit bets, there is an advantage that can effectively prevent deformation.
[0018]
It also forms a slit bets on bent portions of the root portion of the rising portion, it is obtained by a two-stage stance two formed by the slit may prevent more effectively deformed.
[Brief description of the drawings]
FIG. 1 is a perspective view of an embodiment of the present invention.
FIG. 2 is a partial cross-sectional side view showing the mounting state of the above.
FIG. 3 is a partial sectional side view showing another embodiment of the present invention.
FIG. 4 is a rear view of a conventional example.
FIG. 5 is an explanatory view showing a conventional mounting state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Speaker 2 Diaphragm 3 Frame 4 Field part 5 Flange 6 Raising part 7 Mounting part 7a Mounting hole 8 Bending part 8a Slit 9 Screw 9a Head 10 Mounting part 11 Boss 12 Bending part 12a Slit

Claims (2)

Each corner of the frame (3) is bent to the back side to form a rising portion (6), and its end is bent to the outside to attach a mounting portion (7) having a mounting hole (7a). In the formed speaker (1),
Forming a slit (8a) at the center of the bent portion (8) between the rising portion (6) and the attaching portion (7) and along the bent portion (8) ;
The mounting hole (7a) is formed in the mounting portion (7) so that the head (9a) of the mounting screw (9) inserted through the mounting hole (7a) is applied to the slit (8a). Speaker. The speaker according to claim 1, wherein a slit (12a) is formed in the bent portion (12) at the base of the rising portion (6) along the bent portion (12) .

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