JPH10260278A - Surface glass fixing structure for instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance appearance by inserting a stop pawl formed on the outer circumferential wall of a facing while directing forward into a hole at an engaging part formed at the bent outer circumferential fringe part of a surface glass thereby eliminating shrinkage at the facing after molding. SOLUTION: A stop pawl 11 formed on the outside of outer circumferential wall 8a at a facing 8 is bent from a wall 11a projecting outward to extend toward the opening of the facing 8 substantially in parallel with the outer circumferential wall 8a and a pawl 12 is formed at the forward end thereof. A prism engaging part 14 having a rectangular hole 14a is formed on the outside of the bent outer circumferential fringe part 13 of a surface glass 10. Dimension between the inner surface of the projecting wall 11a and the pawl 12 of the stop pawl 11 are substantially equal to the length dimension of the engaging part 14 which is clamped by the pawl 12 and the projecting wall 11a and the surface glass 10 is prevented to move back and forth. The stop pawl 11 exhibiting resiliency in the direction opening upward is stopped on the inner side face at the upper part of the engaging part 14 and since it is not burdened, reinforcement is not required at the stop pawl 11 part of the facing 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front glass mounting structure for an instrument, and more particularly, to a structure in which a front glass is attached to a front portion of a facing by a locking claw.

[0002]

2. Description of the Related Art FIGS. 4 and 5 show a conventional instrument mounting structure for a front glass.

In FIG. 4, an inner unit 2 is accommodated in a meter case 1, and a dial 3 is attached to a front portion of the inner unit 2. A pointer 5 attached to a pointer shaft 4 of the inner machine 2 is arranged at the front of the dial 3.

At the front of the meter case 1, a facing 8 having an outer peripheral wall 8a projecting upward is attached.
The front glass 10 is attached to the front of the facing 8 as follows.

[0005] As shown in FIG.
A rectangular cylindrical engaging portion 6 is formed outside (only the upper portion is shown in FIG. 5). On the outer periphery of the front glass 10 (only the upper edge is shown in FIG. 5), a bent outer peripheral portion 13 is provided.
Is formed, and a claw 7 is formed at the tip of the bent outer peripheral portion 13.

With the above configuration, when the pawl 7 of the front glass 10 is inserted into the engaging portion 6, the pawl 7 is locked on the rear surface of the engaging portion 6, and
As shown in FIG. 4, the front glass 10 is attached to the front of the facing 8.

This similar technique is disclosed in Japanese Utility Model Publication No. 7-29000.

[0008]

In the above-described instrument glass mounting structure, since the engaging portion 6 is formed in the opposite side 8, it is necessary to reinforce the engaging portion 6 by increasing the thickness of the portion. . However, when such a locally thick portion is provided, a so-called sink mark 15 occurs due to shrinkage of the resin after molding (see FIG. 5). Since the engaging portions 6 are provided at a plurality of locations of the facing 8, the sink marks 15 appear at a plurality of locations of the facing 8, and there is a problem that the appearance of the entire facing 8 deteriorates.

The present invention has been made in view of the above points, and an object of the present invention is to provide an instrument front glass mounting structure which improves appearance by eliminating a return sink mark generated after molding.

[0010]

In order to achieve the above object, according to the first aspect of the present invention, a facing is attached to a front part of a meter case in which an inner unit is housed, and a front glass is attached to a front part of the facing. A front glass mounting structure of the mounted instrument, wherein a frontward engaging claw is formed on the facing outer peripheral wall, and an engaging portion having a hole in a bent outer peripheral edge of the front glass is formed. A locking claw is inserted into the hole, and a claw at a tip end of the locking claw is engaged with the engaging portion.

For this reason, according to the first aspect of the present invention, the engaging portion of the front glass is inserted into the facing locking claw to lock the locking claw on the front surface of the engaging portion. It is not necessary to reinforce the locking claws by increasing the wall thickness, and there is no sink caused by the wall thickness, so that a good-looking instrument can be obtained.

According to a second aspect of the present invention, there is provided the front glass mounting structure for an instrument according to the first aspect, wherein the locking claw comprises:
Bent from a protruding wall that protrudes outward from the facing,
The engaging portion is sandwiched between the protruding wall and the claw.

Therefore, according to the second aspect of the invention, the engaging portion of the front glass is sandwiched between the pawl of the locking claw and the protruding wall, and the front glass is prevented from moving in the front-rear direction. And can be securely attached.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 4 and 5 are denoted by the same reference numerals.

In FIG. 1, an inner unit 2 is housed in a meter case 1, and a dial 3 is attached to a front portion of the inner unit 2. A pointer 5 attached to a pointer shaft 4 of the inner machine 2 is arranged at the front of the dial 3.

At the front of the meter case 1, a facing 8 having an outer peripheral wall 8a is attached. A front glass 10 is attached to the front of the facing 8 as follows.

As shown in FIG. 2, an outer peripheral wall 8a
A locking claw 11 is formed on the outside of FIG. 2 (only the upper portion is shown, but the same applies to the lower portion). This locking claw 1
1 is bent from a protruding wall 11a that protrudes outward from the outer peripheral wall 8a, and extends in a direction of the opening 8b of the facing 8 substantially parallel to the outer peripheral wall 8a at a predetermined interval from the outer peripheral wall 8a,
The tip has a structure in which a nail 12 is formed.

A bent outer peripheral portion 13 is formed on the outer peripheral edge (only the upper end edge is shown in FIG. 2) of the front glass 10, and a square tube having a square hole 14a outside the bent outer peripheral edge 13 is formed. An engagement portion 14 having a shape is formed.

With the above configuration, the engaging portion 1 of the front glass 10 is
When the square hole 14a of No. 4 is inserted into the locking claw 11, the claw 12 is locked on the front surface of the engaging portion 14 by the elasticity of the locking claw 11 when the claw 12 comes out of the square hole 14a, as shown in FIG. The front glass 10 is attached to the facing 8 as described above. The locking claw 11 and the engaging portion 14 as described above are provided with the facing 8 and the front glass 10.
Are provided at desired locations.

In this embodiment, the dimension between the inner surface of the protruding wall 11a and the claw 12 of the locking claw 11 is substantially equal to the length of the engaging portion 14 (dimension along the insertion direction of the locking claw 11). As a result, the engaging portion 14 is brought into contact with the claw 12 and the protruding wall 1.
1a, the front glass 10 is stopped from moving in the front-rear direction (see FIG. 3).

Although the locking claw 11 has elasticity in a direction to open outward, it is stopped at the upper inner surface of the engaging portion 14, so that the locking claw 11 bears a heavy load. Since it is not applied, it is not necessary to reinforce the portion of the hook 8 of the hook 8 by making it thick.

As described above, in the front glass mounting structure of the instrument according to the present embodiment, the engaging portion 14 is formed on the front glass 10 and the locking claw 11 is formed on the facing 8. It is not necessary to increase the thickness of the facing 8 corresponding to the above and to reinforce it, and there is no sink mark caused by the local thickness, so that a good-looking instrument can be obtained.

[0023]

As described in detail above, according to the first aspect of the present invention, the engaging claws are formed on the outer peripheral wall of the facing, and the engaging portions are formed on the bent outer peripheral edge of the front glass. Therefore, it is not necessary to reinforce the return locking claw portion by increasing the wall thickness, and sinks caused by the wall thickness are eliminated, so that a good-looking instrument can be obtained.

According to the second aspect of the present invention, since the engaging portion is sandwiched between the projection wall of the locking claw and the claw, the engaging portion of the front glass is formed by the claw of the locking claw. The front glass is securely sandwiched between the protruding wall and the front glass.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing an embodiment of a front glass mounting structure of an instrument according to the present invention.

FIG. 2 is an enlarged sectional view of a main part of the embodiment of FIG. 1 before assembly.

FIG. 3 is an enlarged sectional view of a main part of the embodiment of FIG. 1 in an assembled state.

FIG. 4 is a vertical sectional side view of a conventional instrument front glass mounting structure.

FIG. 5 is an enlarged sectional view of a main part of the conventional instrument of FIG. 4 before assembling.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 meter case 8 facing 8 a outer peripheral wall (return) 10 front glass 11 locking claw 11 a projecting wall 12 claw 13 bent outer peripheral edge (of front glass) 14 engaging portion 14 a hole

Claims (2)

[Claims] 1. A front glass mounting structure for an instrument, wherein a facing is attached to a front part of a meter case in which an inner unit is stored, and a front glass is attached to a front part of the facing, wherein a front glass is attached to an outer peripheral wall of the facing. Forming an engaging portion having a hole in the bent outer peripheral edge of the front glass, inserting the engaging claw into the hole, and inserting the claw at the tip of the engaging claw into the hole. A front glass mounting structure for an instrument, which is engaged with an engagement portion. 2. The locking claw is bent from a protruding wall protruding outward from the facing, and the engaging portion is sandwiched between the protruding wall and the claw. The front glass mounting structure for an instrument according to claim 1.