JP3343699B2 - Detachable speaker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detachable speaker which can be attached or detached with a single touch to a panel or the like for attaching a speaker.

[0002]

2. Description of the Related Art For example, mounting means for a vehicle-mounted speaker is disclosed in Japanese Utility Model Laid-Open Publication No. 60-17084 and Japanese Utility Model Publication No.
As disclosed in Japanese Patent No. 672, a hole for embedding is formed in a speaker mounting portion such as a rear tray of an automobile or an inside panel which is an exterior panel of a door. After dropping the magnetic circuit portion of the speaker from the inside, a method of fixing the speaker and the rear tray or the inside panel directly or directly with a member such as a mounting plate with screws is used. Basically, the means for attaching the speaker to the speaker box is also similar to that of a vehicle-mounted speaker by forming a hole for embedding in the front plate of the speaker box and dropping a magnetic circuit portion of the speaker into the hole for embedding. Then, the frame portion of the speaker and the front plate are fixed with screws. On the other hand, Japanese Unexamined Utility Model Publication No. Hei 5-25894 proposes a ceiling-embedded speaker in which a speaker can be easily mounted on a ceiling plate or the like by attaching a decorative board in advance.

[0003]

The method of fixing many speakers, such as an in-vehicle speaker, with screws is particularly difficult when there is sufficient space around the mounting portion for the mounting work. No problem arises. However, mounting using a driver or the like in a very limited space, such as a car door or a rear tray, such as an in-vehicle speaker, is extremely difficult to perform, and is inefficient. In addition, when replacing a speaker, it is necessary to remove many screws and nuts one by one, so removal work in a limited space is extremely inefficient, and the work can be easily performed by individuals. At present, there are many practical issues to be solved, such as the inability to do so. In addition, 5-25
The ceiling-mounted speaker disclosed in Japanese Patent No. 894 discloses mounting a decorative plate on a speaker mounting plate using a pillar standing on the decorative plate, sandwiching the ceiling plate between the decorative plate and the speaker mounting plate, Furthermore, the speaker is fixed by pressing the ceiling plate sandwiched by using the stress of the spring,
It is excellent in that it does not use any screws or tools such as screws, but its structure is extremely complicated,
It has disadvantages such as extremely complicated operation.

In view of the above situation, the present invention provides a detachable speaker which can be easily and easily attached to a speaker mounting portion without using any screws or tools such as screws. Is to be provided.

[0005]

In order to achieve the above-mentioned object, a detachable speaker according to the present invention is provided on an inner peripheral end of a mounting hole formed in a speaker mounting portion on a back surface of a synthetic resin frame. The cross-section that clamps the
A pair of letter-shaped holding pieces are integrally formed at positions facing each other, and the back surface of the outer peripheral edge of the frame main body where one of the holding pieces is located is inclined from the outer peripheral edge toward the center so as to guide. A part is formed.

More specifically, a detachable speaker according to the present invention is provided on one of opposing portions of a back surface of a synthetic resin frame having a magnetic circuit holding portion.
A holding piece having an L-shaped cross section for holding the inner peripheral end of the mounting hole formed in the speaker mounting portion with the frame main body, and having a projection with a mountain-shaped cross section on the upper surface of the horizontal portion, On the other hand, a holding piece having an L-shaped cross section for holding the inner peripheral end of the mounting hole with the frame main body is integrally formed, and an outer peripheral edge of the back surface of the frame main body where the holding piece is located. And a guide portion inclined from the outer peripheral edge toward the center portion.

In the present invention, the material of the frame main body is not particularly limited as long as it is a synthetic resin which can be easily molded. However, it is preferable to use engineering plastics such as polycarbonate having good dimensional stability and ABS resin having good impact resistance. Further, the frame main body has a magnetic circuit holding portion at the bottom (central portion). The magnetic circuit holding portion is provided with a magnetic circuit at the bottom, such as an adhesive, a screw, or a caulking device as in a known frame. Alternatively, a cylindrical holding part having a bottom may be integrally formed, and a magnetic circuit may be mounted in the holding part. At this time, although not shown, an engaging projection for positioning is formed at the center of the upper surface of the inner bottom portion of the holding portion, and an engaging recess provided at the center of the bottom portion of the bottom plate is fitted to the engaging protrusion. A ring-shaped magnet is mounted using a magnet guide formed of a ridge provided on the upper surface of the bottom plate, and then the top plate is concentrically disposed on the magnet, and a part of the outer peripheral edge of the top plate. Can be engaged with an engagement piece protruding from the inner peripheral surface of the upper end of the holding part, and the magnetic circuit can be mounted in the holding part without using an adhesive by so-called bayonet coupling means while rotating the top plate. Good.

An L-shaped holding piece integrally formed on the back surface of the frame main body is for holding the inner peripheral end of the mounting hole formed in the speaker mounting plate between the holding piece and the frame main body. And are formed at opposing portions of the back surface of the frame main body. In the case where a ring-shaped engaging piece is formed along the opening edge on the back surface of the mounting hole formed in the speaker mounting portion, the engaging piece is provided on the upper surface of the horizontal portion of one of the holding pieces. By forming the projection that engages with the piece, there is no possibility that a positional shift due to vibration occurs.

A guide portion formed along the outer peripheral edge of the back surface of the frame main body is provided so as to be located on one of the holding pieces, and this guide portion is inclined from the outer peripheral edge toward the bottom. Thereby, the frame main body can be smoothly inserted into the mounting hole formed in the speaker mounting portion.

[0010]

According to the detachable speaker of the present invention, a pair of holding pieces are formed on the rear surface of the frame main body at positions facing each other, so that a speaker mounting portion is provided between the holding piece and the outer peripheral portion of the frame main body. The speaker can be mounted on the speaker mounting plate without using any screws by inserting and holding the inner peripheral end of the mounting hole formed in the speaker. At this time, since a guide portion inclined toward the center is formed on the outer peripheral edge of the back surface of one of the holding members of the frame main body, the speaker can be smoothly inserted into the mounting hole.

An embodiment of a detachable speaker according to the present invention will be described below with reference to the accompanying drawings. The detachable speaker 1 of the present invention comprises a frame main body 2 having an inverted truncated conical shape as a whole. Book) projecting obliquely upward, and integrally providing an outer peripheral edge with a flat bottom surface at the tip end of each arm, and at opposite positions on the inner back surface of the outer peripheral edge near the arm side. A pair of holding pieces 4 and 5 each having an L-shaped cross section are integrally formed with their opening sides facing outward. The distance between the horizontal portion 5 and the upper surface is the same as the thickness of the speaker mounting portion to be pinched. On the upper surface of the horizontal portion of one of the holding pieces 4, a projection 4a having a mountain-shaped cross section is integrally formed. In addition, a guide portion 6 that is inclined from the outer peripheral edge toward the bottom portion is formed on the outer peripheral edge of the back surface of the frame main body 2 where the other holding piece 5 is located. 1 and 2, 7 is a bottom plate, 8 is a magnet, 9 is a top plate, 10 is a diaphragm, 11 is a damper, 12 is a voice coil, 13 is a dust cap, 14
Denotes a gasket, and 15 denotes a window formed in the frame main body 2 for venting air.

A specific method for attaching the speaker 1 having such a structure to a speaker attachment plate 16 such as an inside panel, which is an exterior panel of an automobile door, will be described below. First, as shown in FIG. 4, the speaker 1 is attached to a speaker mounting hole 17 formed in a speaker mounting plate 16.
Set above. Then, the guide portion 6 formed on the back surface of the outer peripheral edge of the frame main body 2 is placed in a horizontal state with the speaker mounting plate 16 around the mounting hole 17 while the magnetic circuit portion is dropped into the mounting hole 17 while the speaker 1 is inclined. After the contact, the speaker 1 is moved in the direction of the arrow X, and the speaker 1 is inserted into the mounting hole 17 between the holding piece 5 having an L-shaped cross section and the back surface of the frame main body 2 as shown in FIG. Insert the peripheral end. Thus, the inner peripheral end of the mounting hole 17 and the holding piece 5
When the magnetic circuit portion of the speaker 1 is dropped into the mounting hole 17 as shown in the direction of the arrow in FIG. The rear surface of the peripheral portion is in contact with the upper surface of the speaker mounting plate 16, and the speaker 1 does not enter the mounting hole 17 any more. Thereafter, when the speaker 1 is moved in the direction of arrow Y in FIG. 6, the inner peripheral end of the mounting hole 17 enters between the frame main body 2 and the other holding piece 4, and the speaker 1 is held by the speaker mounting plate 16. It is to let. If a ring-shaped engaging piece 17a projecting downward along the inner peripheral edge portion is formed on the back surface of the mounting hole 17 formed in the speaker mounting plate 16, the engaging piece 17a and the holding piece 4 are formed. The speaker 1 is attached to the speaker mounting plate 1
6 can be securely fixed.

In the above embodiment, the speaker mounting plate 1
6, a circular mounting hole 17 is formed, and a ring-shaped engaging piece 17a projecting downward along the inner peripheral edge of the back surface of the mounting hole 17 is formed, as shown in FIG. A circular mounting hole 16 is formed in the speaker mounting plate 17 and the cross section formed in the frame main body 2 at a position facing the mounting hole 16 has substantially the same width as the L-shaped holding pieces 4 and 5. Square notches 18 and 19 are formed, and a U-shaped engaging piece 17a formed of a ridge is provided on the back surface of one of the notches 18.
If the other notch 19 is provided with an engagement piece 17b made of a convex strip, when the speaker 1 is mounted, one of the holding pieces 4 is inserted into the U-shaped engagement piece 17a. There is no displacement due to being accommodated.

[0014]

According to the speaker of the present invention, a pair of holding pieces having an L-shaped cross section are provided at positions facing each other on the back face of the main body made of synthetic resin, and the back face of the frame main body on one of the holding pieces is provided. Since the guide portion inclined in the bottom direction is formed on the outer peripheral edge portion, the magnetic circuit portion is dropped into the mounting hole formed on the speaker mounting plate, and at the same time, the speaker is brought into contact with the speaker mounting plate while the guide portion is in contact with the speaker mounting plate. By sliding along the inclination of the guide portion, the inner peripheral end of the mounting hole can be smoothly inserted between the back surface of the frame main body and the holding piece. Further, after holding the inner peripheral end of the mounting hole between one holding piece and the back surface of the frame main body using the guide portion, the speaker is slid again in the direction opposite to the direction in which the speaker is slid in. The inner peripheral end opposite to the mounting hole is inserted between the other holding piece on the back of the frame main body, and the speaker can be attached to the speaker mounting plate without using any screws or tools such as screws. Since it can be easily and easily attached and detached, it is particularly suitable for installation in a narrow place where there is no space for installation work, such as a rear tray of an automobile which does not take up and down space.

[Brief description of the drawings]

FIG. 1 is a sectional view mainly showing a frame constituting a speaker of the present invention.

FIG. 2 is a plan view mainly showing a frame.

FIG. 3 is a bottom view of a frame main body.

FIG. 4 is a partially cutaway cross-sectional view for explaining a method for mounting the speaker of the present invention on a speaker mounting plate, and shows a state of sliding in.

FIG. 5 is a partially cutaway cross-sectional view for explaining a method for mounting the speaker of the present invention on a speaker mounting plate, and shows a state where the speaker is slid in.

FIG. 6 is a partially cutaway sectional view for explaining a method for mounting the speaker of the present invention on the speaker mounting plate, and shows a state where the speaker is slid to the opposite side.

FIG. 7 is a partially cutaway sectional view for explaining a method for mounting the speaker of the present invention on the speaker mounting plate, and shows a state where the speaker is mounted on the speaker mounting plate.

FIG. 8 is a plan view showing an example of a speaker mounting plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Speaker 2 Frame main body 3 Bottom part 4, 5 Holding piece 6 Guide part 16 Speaker mounting plate 17 Mounting hole

Claims (3)

(57) [Claims] 1. A pair of holding pieces having an L-shaped cross section for holding an inner peripheral end of a mounting hole formed in a speaker mounting portion between the main body of a frame and a synthetic resin frame main body. In addition to being integrally formed at the opposed position, a guide portion is formed by inclining the back surface of the outer peripheral edge of the frame main body where one of the holding pieces is located from the outer peripheral edge toward the center. Detachable speaker. 2. An inner peripheral end portion of a mounting hole formed in a speaker mounting portion at one of opposing portions on a back surface of a synthetic resin frame main body having a magnetic circuit holding portion. An L-shaped cross section is sandwiched between the holding pieces, and a holding piece provided with a projection having a mountain-shaped cross section on the upper surface of the horizontal portion, and the inner peripheral end of the mounting hole is held between the holding piece and the frame body. A holding piece having an L-shaped cross section is integrally formed, and a guide portion inclined from the outer circumference toward the center is formed on an outer peripheral edge of a back surface of the frame main body where the holding piece is located. A detachable speaker. 3. A pair of holding pieces having an L-shaped cross section are integrally formed on the back surface of the synthetic resin frame main body in correspondence with the rectangular cutouts formed at positions facing each other in the mounting holes of the speaker mounting plate. A guide portion is formed by inclining the rear surface of the outer peripheral edge of the frame main body where one holding piece is located from the outer peripheral edge toward the center portion, and when the speaker is mounted in the mounting hole, each notch is formed. Characterized in that the upper and lower sides of the frame are sandwiched between the back of the frame main body and the holding piece, and the other holding piece is housed in a U-shaped engaging piece formed on the back of one of the cutouts. Speaker.