JP2578391Y2 - Car stereo speakers - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker for a car stereo which can be easily mounted in a vehicle body and does not rattle due to running vibration.

[0002]

2. Description of the Related Art A conventional car stereo speaker is fitted from the front side into a speaker mounting hole of a mounting board such that the back surface of the outer peripheral portion of the speaker grill contacts the surface of the mounting board, and is screwed into a boss. Although fixing with screws or the like is common, there is a problem that it is necessary to fix at a number of places and fix the screws with trouble in order to prevent rattling due to running vibration.

[0003]

The problem to be solved by the present invention is to solve the above-mentioned problems and to fix the boss in a full-scale manner such as screwing or crushing welding of the boss portion so that the mounting work is easy. An object of the present invention is to provide a car stereo speaker which does not cause rattling due to running vibration even if the number of locations is reduced.

[0004]

A car stereo speaker according to the present invention, which has solved the above-mentioned problems, has a wide plate-like insertion portion at one end near the edge of the speaker hole and a locking end at the other end. A mounting board provided with a deformed elongated hole to be a narrow portion and an engaging small hole outside the locking narrow portion, and a tip of a short leg portion disposed at a required interval on the back surface of the main body. A speaker grill comprising a locking plate provided on an inner surface thereof and having a small protrusion capable of engaging with the engagement small hole, wherein the locking plate is inserted into the plate insertion portion of the deformed elongated hole. The short leg portion is positioned in the narrow portion for locking at the other end of the deformed long hole by rotating the speaker grill fitted with the small hole, the small projection is engaged with the small hole for engagement, and The speaker grill is held on the mounting board with the inner surface of the plate piece being in close contact with the back of the mounting board. It is intended to.

[0005]

In such a car stereo speaker, the short leg portion is deformed by rotating a speaker grill fitted with a locking plate into a plate insertion portion of a deformed long hole provided on the mounting board. The speaker grill is set in a state in which the small projection is engaged with the small hole for engagement at the other end of the long hole and the small projection is engaged with the small hole for engagement, and the inner surface of each plate for engagement is in close contact with the back surface of the mounting board. Is held on the mounting board, so that the speaker grill is properly held on the mounting board without rattling.
Even if the number of fixed portions is reduced, the speaker does not rattle or come off due to running vibration. In addition, at the time of assembling to the mounting board, a locking plate piece stretched through the short leg portion on the back surface of the speaker grill is provided near the edge of the hole of the speaker hole. It is fitted simply by rotating it under the guide by the inclined surface for guide until the short leg is positioned at the narrowing portion for locking at the other end of the deformed elongated hole. The small projections on the inner surface of the plate piece insertion part are automatically engaged with the small holes for engagement on the back surface of the board, and the inner surface of each locking plate is tightly held on the back surface of the mounting board. The work is simple and mass production is easy.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. 1 is a speaker grill and 10 is a mounting board on which the speaker grill 1 is mounted. Mounting board 1
0 is provided with a circular speaker hole 11, one end of which is a wide plate piece insertion portion 12a, and the other end is a locking narrow portion 1
Two or three modified elongated holes 12b are provided at equal intervals in the vicinity of the edge of the speaker hole 11, and small engaging holes are provided outside the locking narrow portion 12b. 13 are provided.

On the other hand, the speaker grill 1 is mounted on a mounting board 10.
The short leg portion 3 is spaced apart from the short side of the annular grill main body 1a by a predetermined distance so that the back surface of the outer peripheral portion 2 is in contact with the outer peripheral surface of the hole edge of the speaker hole 11 when fitted from the front side.
A circular locking plate 4 that is large enough to pass through the plate insertion portion 12a through the opening is stretched. The locking plate 4 has an inner surface 5 formed on an inclined surface which is inclined in a circumferential direction of the grill main body 1a from a lower end 5b to an upper end 5a, and is attached to a portion of the inner surface 5 outside the short leg portion 3. Board 10
Are provided with hemispherical small protrusions 6 that can be engaged with the small engagement holes 13.

The short-leg portion of the speaker grill 1 is formed by fitting the locking plate 4 from the front side with the locking plate 4 into the plate insertion portion 12a of the deformed elongated hole 12 and rotating the speaker grill 1. 3 is positioned at the other end of the deformed elongated hole 12 at the narrow portion 12b for engagement, and at the same time, the small hole 13 for engagement provided on the mounting board 10 is inserted into the inner surface 5 of the plate piece 4 for engagement. An inner surface 5 of each locking plate 4 is engaged with a certain small projection 6.
Is in close contact with the back surface of the mounting board 10 so that the speaker grill 1 is accurately held on the mounting board 10. The inner surface 5 of the locking plate 4 extends from the lower end 5b to the upper end 5a so as to be inclined in the circumferential direction of the grill main body 1a. This is because the clearance is sufficient so that the bite during rotation is good, and after the rotation, the distance between the mounting board 10 and the rear surface of the mounting board 10 is narrowed by the up end 5a, so that the degree of close contact with the back surface of the mounting board 10 is increased.

[0009] With the above-described structure, the short leg 3 with the locking plate 4 is normally provided in the deformed long hole 12 provided near the edge of the speaker hole 11 of the mounting board 10 from the front side. The fitted speaker grille 1
The small projection 6 provided on the inner surface of the locking plate 4 outside the short leg 3 is engaged with the engaging small hole 13 provided outside the locking narrow portion 12b at one end. In this state, the up end 5a side of the inclined inner surface 5 of each locking plate 4 is attached to the mounting board 1.
Since the speaker grill 1 is closely attached to the back surface of the mounting board 10, the speaker grill 1 is held in a state without rattling with respect to the mounting board 10. Therefore, even if the number of fixed portions is reduced, the speaker is rattled by running vibration. It does not come and go.

Further, when assembling to the mounting board 10, the mounting board 1 is mounted from the front side of the mounting board 10 as described above.
The speaker grill 1 is pushed in with the locking plate 4 corresponding to the plate loading portion 12a of the deformed elongated hole 12 provided at the inner side of the locking plate 12 and the speaker grill 1 is provided on the inner surface of the locking plate 4. The hemispherical small projection 6 is rotated only to a position where it engages with the small engaging hole 13 provided outside the narrow narrowing portion 12b at one end of the deformed long hole 12, and the plate for locking is formed. The inner surface 5 of the piece 4 is brought into close contact with the back surface of the mounting board 10 due to its own elasticity, and the assembly is completed. After that, full-scale fixing such as screwing or crushing welding of the boss portion is performed as necessary. Good,
Thus, even in the case of performing full-scale fixing, the small holes 13 for engagement are used.
The work can be simplified by being held by the engagement of the small projections 6 with the small projections 6 and the close contact of the inner surface 5 of the locking plate 4 with the mounting board 10 on the up end 5a side. Since the attaching operation is extremely easy, it can be provided at low cost.

[0011]

As is apparent from the above description, the present invention provides a mounting board having a deformed elongated hole and an engaging small hole, one end of which has a wide plate-piece insertion portion and the other end has a narrowing portion for locking. A speaker grill in which an inner surface is formed as an inclined surface at an end of a short leg portion arranged at a required interval on the back surface, and a locking plate piece provided with a small projection on an outer portion from the short leg portion is stretched. By simply turning the speaker grill in a state where the locking plate is fitted in the plate insertion portion of the deformed elongated hole of the mounting board, a full-scale operation such as screwing or crushing welding of the boss portion is performed. Even if the fixed portions are eliminated or reduced, rattling due to running vibration does not occur. Therefore, the present invention solves the problems of the conventional car stereo speaker of this type, and has a very large practical value in combination with the advantage that the structure is simple and the assembling operation is easy. It is.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a speaker grill according to the present invention.

FIG. 2 is a side view showing an embodiment of the speaker grill according to the present invention.

FIG. 3 is a front view showing a relationship between a speaker hole and a deformed elongated hole of the mounting board according to the present invention.

FIG. 4 is an enlarged sectional view of a main part in the present invention.

FIG. 5 is a front view of another embodiment showing a relationship between a speaker hole and a deformed elongated hole of the mounting board according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Speaker grill 2 Outer peripheral part 3 Short leg part 4 Locking plate piece 5 Inner surface 6 Small protrusion 10 Mounting board 11 Speaker hole 12 Deformed long hole 12a Plate piece insertion portion 12b Locking narrow portion

Continuation of the front page (56) References JP-A-2-190098 (JP, A) JP-A-56-123683 (JP, U) JP-A-63-136485 (JP, U) JP-A-3-61455 (JP) , U) (58) Fields surveyed (Int. Cl. ⁶ , DB name) H04R 1/02

Claims (2)

(57) [Scope of request for utility model registration] A deformed elongated hole (12) is provided near the hole edge of a speaker hole (11), one end of which is a wide plate insertion portion (12a) and the other end of which is a narrow locking portion (12b). Together with the locking narrow portion (12b)
A mounting board (10) provided with small holes (13) for engagement on the outside of the main body, and short legs arranged on the back of the grill main body (1a) at a required interval
(3) a small projection which can be engaged with the engagement small hole (13) at the tip of
(6) comprises a speaker grill (1) in which a locking plate (4) provided on the inner surface (5) is stretched, and the deformed elongated hole (12) is formed.
By rotating the speaker grill (1) fitted with the locking plate (4) to the plate loading portion (12a), the short leg (3) is turned at the other end of the deformed elongated hole (12). The small projections (6) are engaged with the small holes (13) for engagement at the narrow portions (12b) for engagement, and the inner surfaces (5) of the respective plate pieces (4) for engagement are attached to the mounting board ( A speaker for a car stereo, wherein a speaker grill (1) is held on a mounting board (10) so as to be in close contact with the back surface of (10). 2. The locking plate (4) has at least an inner surface.
The speaker for a car stereo according to claim 1, wherein (5) is formed on an inclined surface, and the up end (5a) side of the inner surface (5) is in close contact with the back surface of the mounting board (10).