JPS6325815Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a speaker box net plate mounting device, and the present invention relates to a speaker box net plate mounting device, which allows the mounting work of parts to be mounted on the speaker box side to be extremely easy, regardless of variations in the thickness of the front panel of the speaker box. It is designed to be easy to carry out and to allow parts to be shared.

Conventional structure and its problems Conventionally, when attaching and detaching a net board to the front of a speaker box, a counterbore 1a is provided in the front panel 1 of the speaker box as shown in Fig. 1, and a rubber A mounting part 2 formed in the shape of a cylinder with a bottom made of resin or the like is embedded, and a wood screw 4 is fastened to the bottom surface of the part 2 via a metal washer 3. Note that 2a is a protrusion provided on the inner periphery of the opening of the component 2, and by engaging the recess 6a of the pin 6 provided in the net plate 5 with the protrusion 2a, the net plate 5 can be moved in front of the speaker box. It is designed to be detachably attached to the face plate 1.

Generally, in such a net board mounting device, it is necessary to fix one net board at several locations (usually four locations). However, if you do it as shown in Figure 1, it is necessary to provide several counterbores 1a in one front plate 1, and if the depth of these counterbores 1a is not constant, when the wood screws 4 are tightened, There is a problem in that the parts 2 are deformed in different ways, making it difficult to attach and detach the net board. In addition, in order to suppress the deformation of the part 2 as much as possible and prevent the wood screw 4 from coming off,
Since the washer 3 must be provided inside the component 2 and a screwdriver or the like must be inserted into the interior of the component 2 to tighten the wood screw 4, the number of components and the number of man-hours increases, which is undesirable for mass production.

In order to solve this problem,
No. 1 proposed a mounting device as shown in Figure 2.
This is provided with flanges 7a and 7b at both ends of the mounting part 7, a through hole 8a in the front plate 8, and this through hole 8.
By press-fitting the attachment part 7 into the hole 8a, the flanges 7a and 7b are brought into contact with both ends of the through hole 8a without any gaps. In this way, sufficient airtightness can be maintained and workability can be improved.

However, with this configuration, the mounting parts 7 cannot be installed tightly unless the plate thickness t ₁ of the front plate 8 is kept within a certain tolerance _. Even in the case of a product, if the plate thickness _t1 varies, the plate thickness must be adjusted by cutting from the back side, or a new mounting part with different dimensions must be made, which has the disadvantage of lacking versatility. It was hot.

Purpose of the invention This invention solves these conventional problems, and makes it possible to install common parts and maintain a sufficient degree of airtightness, regardless of differences or variations in the thickness of the front panel of the speaker box. The present invention provides a net board mounting device for Spica Box.

Structure of the invention This invention provides a flange larger than the diameter of the through hole or bottomed hole provided in the front plate of the speaker box near the bottom of the mounting part formed in the shape of a cylinder with a bottom made of an elastic material such as rubber or resin. A thin-walled portion is provided near the flange, and when the mounting part is press-fitted into the hole, the thin-walled portion is deformed so that the flange abuts against the side wall of the hole or around the end of the hole without any gaps. This is what I did.

DESCRIPTION OF EMBODIMENTS FIG. 3 shows a mounting part 9 used in an embodiment of the present invention, which is formed of an elastic material such as rubber or resin into a cylindrical shape with a bottom, and has a cylindrical shape on the inner periphery near the opening. ,
A protrusion 9a is provided which engages with a recess 6a provided in the pin 6 of the net board 5 shown in FIG. 1, and flanges 9b and 9c are integrally formed on the outer periphery of the bottom and the outer periphery of the opening, respectively. A taper is formed around the flange 9b, and a thin portion 9 is formed near the flange 9b.
a is formed.

On the other hand, as shown in FIG. 4, the front plate 10 of the speaker box is provided with a through hole 10a at a predetermined position as shown in FIG.
The above-mentioned mounting part 9 is press-fitted into 0a using a jig. At this time, since the periphery of the collar 9b provided at the bottom of the attachment part 9 is tapered, it can be easily press-fitted, and the deformation of the thin-walled part 9d further facilitates press-fitting. If the bottom of the attachment part 9 is press-fitted slightly deeper with a jig from the state where the collar 9c is in contact with the periphery of the through-hole 10a on the front surface of the front plate 10, the collars 9b and 9c will maintain a tight seal due to their elasticity. Moreover, the collar 9b has a reverse tapered shape in the direction of removal, so it will not fall off accidentally.

In addition, FIG. 4 shows a case where a through hole 10a is provided in the front plate 10, a mounting part 9 shorter than the plate thickness _t2 of the front plate 10 is press-fitted therein, and its collar 9b is brought into contact with the inner wall of the through hole 10a. As shown, the collar 9 of the mounting part 9
If the length between b and 9c is the same as the plate thickness t ₂ of the front plate 10, the collar 9b will come into contact with the periphery of the other end of the through hole 10a as in the case shown in FIG. Also, Tsuba 9
In the case where the through hole 10a is provided in the front plate 10 having the same thickness as the length between b and 9c, if the thickness _t2 of the front plate 10 varies slightly, the attachment part 9
The flange 9b is either in the state shown in FIG. 4 or in the state shown in FIG. 2, and the airtightness can be maintained in either case, regardless of variations in plate thickness _t2 . Furthermore, even if a bottomed hole deeper than the length of the attachment part 9 is provided in the front plate 10, the attachment part 9 can be firmly attached in the same condition as shown in FIG. A mounting part 9 can be used.

Effects of the invention As described above, according to the invention, there is no need to require precision in the depth of counterbore, to provide washers inside the parts, or to tighten each wood screw one by one, as in the past. Installation is completed by simply press-fitting the mounting parts with a jig, so it is easy to mass-produce.
This is extremely advantageous in reducing costs.

Moreover, even if the thickness of the front plate with through holes varies greatly, or if the thickness of the plate is completely different, common mounting parts can be installed as is without any post-processing. This is extremely advantageous. Furthermore, when the board is extremely thick or when mounting parts toward the end of the board, as long as a bottomed hole deeper than the length of the mounting part is provided, a common mounting method can be used for this bottomed hole. Parts can be installed. Therefore, excellent effects such as a wide range of design uses, versatility, low mold costs, and easy management of parts can be obtained.

[Brief explanation of drawings]

Fig. 1 is an exploded sectional view of a conventional example, Fig. 2 is a sectional view of another conventional example, Fig. 3 is a sectional view of a mounting part used in an embodiment of the present invention, and Fig. 4 is an installation of the above-mentioned mounting part. It is a sectional view showing a state. 9...Mounting parts, 9a...Protrusion, 9b, 9c...
...Brim, 9d...Thin wall part, 10...Front plate, 10a
...through hole.

Claims (1)

[Scope of utility model registration request] It is formed of an elastic material such as rubber or resin into a substantially cylindrical shape with a bottom, and has a protrusion on the inner periphery near the opening that engages with a pin provided on the net board, and flanges on the outer periphery of the opening and the outer periphery of the bottom. and a mounting part having a thin-walled part formed near the flange on the outer periphery of the bottom thereof, and the mounting part is press-fitted into a hole formed in the front plate of the speaker box, which is either a through hole or a bottomed hole. , a speaker box net plate mounting device in which the flange on the outer periphery of the opening of the mounting part is brought into contact with the periphery of one end of the hole, and the flange on the outer periphery of the bottom of the mounting part is brought into contact with the side wall of the hole without any gaps; .