JPH0338910Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a case mounting structure for accommodating parts such as a switch and attaching the parts to a mounting member such as a panel of an automobile.

(Prior art) Conventionally, in this type of case, a metal leaf spring with a locking pawl at the tip is fixed to a predetermined position of the case with an appropriate means such as a screw, parts are housed in the case, and a cover is installed. After closing the lid, fit this case into a mounting hole provided in a mounting member such as a panel, and lock the locking claw to the inner edge of the mounting hole, and connect the flange provided on the front of the case with the locking claw. It is designed to be fixed in the mounting hole by the screw.

(Problems to be solved by the invention) However, in the conventional case, separate fixing parts are required for attaching the leaf spring, housing the parts, and attaching the cover, and the number of parts is large. However, there is a problem that attaching parts and covers to the case is troublesome, and it has been desired to attach these members to the case with one touch.

The present invention was devised in view of such problems, and an object of the present invention is to provide a case mounting structure that has a small number of parts and is easy to assemble.

(Means for Solving the Problems) In order to solve the above problems, the present invention includes a mounting member having a mounting hole, a flange portion that abuts the upper edge of the mounting hole, and a lower side of the flange portion. A case having an engagement hole, accommodating a component, and fitting into the mounting hole; A cover that covers the case; A flexible plate-shaped metal material having a U-shaped cross section; One leg is formed with a first elastic piece in the center part and a second elastic piece in the outer part, which are separated by an inverted U-shaped slit, and the first elastic piece is formed in the engagement hole of the case. A first claw engages the lower edge from the inside, and a second elastic piece has a second claw that protrudes outward from the engagement hole and engages the lower edge of the mounting hole.
an engaging member provided with claws, the other leg being supported by a guide protruding from the inner surface of the cover, and restrained from moving in the same direction as the direction in which the cover is attached or removed; It is composed of

(Example) Next, an example of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, 1 is a case that accommodates the switch 2, 3 is a cover that covers the case 1, 4 is an engaging member, and 5 is a panel as a mounting member for fitting the case 1 into a mounting hole 6.

The case 1 has a flange portion 1a that abuts the outer edge of the mounting hole 6 of the panel 5 around its upper surface, an operation hole 8 from which the knob 7 of the switch 2 protrudes from the center, and a side surface that engages with the flange portion 1a. The member 4 has an engagement hole 9 through which a second claw 14 of a second elastic piece 12 (described later) projects.

The cover 3 has guides 10 configured to support the engagement member 4 erected on both sides thereof.

The engaging member 4 is made of a flexible plate-shaped metal material, and is formed into a U-shape in cross section, with an inverted U-shaped slit formed in one leg of the engaging member 4, so that the engaging member 4 can be connected to each other by the slit. A first elastic piece 11 on the center side and a second elastic piece 12 on the outer side are separated from each other.
are formed respectively. The tip of the first elastic piece 11 is bent outward to form a first claw 13, and the vicinity of the tip of the second elastic piece 12 is bent outward into a mountain fold to form a second claw 14. It is becoming.

The two engaging members 4 formed as described above are placed between the top of each guide 10 of the cover 3 and the inner surface of the cover 3, with the first claw 13 and the second claw 14 facing laterally, and , attach the cover 3 with both legs facing in the mounting direction, and then insert the switch 2 between the guides 10.
Attach. Then, as shown in Figure 2, the first
The cover 3 is inserted into the case 1 while the elastic piece 11 and the second elastic piece 12 are bent inward and urged, and pushed into the case 1. At this time, since the cover 3 is guided along the inner surface of the case 1 by the guide 10, there is no shaking or rattling during insertion, and the switch 2 can be inserted stably.

Then, when cover 3 is further inserted,
The second claw 14 of the second elastic piece 12 begins to protrude from the engagement hole 9 of the case 1, and the moment the cover 3 closes the case 1, the first claw 13 reaches the engagement hole 9, as shown in FIG. Then, the first elastic piece 11 and the second elastic piece 12, which were biased during insertion, recover due to their elasticity, so that the first claw 13 is locked to the edge of the engagement hole 9, and the second claw 14 completely protrudes from the engagement hole 9.

Therefore, the first claw 13 engages with the edge of the engagement hole 9,
In addition, the engaging member 4 is connected to the top of the guide 10 and the cover 3.
By restricting the movement of the cover 3 in the attachment/detachment direction, the cover 3 is securely fixed to the case 1 without using any special fixing parts, and the second elastic member as a means of attaching it to the panel 5 is This means that the piece 12 is also fixed to the case 1. Further, the switch 2 is also held by the guides 10 on both sides and the inner surface of the case 1, and no other fixed parts are required.

In this state, when the case 1 is inserted into the mounting hole 6 of the panel 5, the second claw 14 protruding from the engagement hole 9 of the case 1 touches the edge of the mounting hole 6, as shown in FIGS. At the same time as the case 1 is crossed over and locked on the inside, the flange portion 1a comes into contact with the outside edge, and the installation of the case 1 is completed. Here, the second claw 14 is attached to the mounting hole 6.
As shown in Figure 4, when crossing the edge of
The second elastic piece 12 will bend inward, but the second elastic piece 12 will bend inward.
Since the elastic piece 12 and the first elastic piece 11 are separated from each other via the slit, the first elastic piece 11 will not bend at the same time and the first claw 13 will not come off.

(Effects of the invention) As is clear from the above explanation, according to the invention, the engaging member has the function of fixing the cover and the case to the attachment part, and the part that supports the engaging member. At the same time, it has the function of holding parts, has a small number of parts, and
The engaging member, the cover, and the parts can be assembled to the case simultaneously and easily without using special fixing parts such as screws. In addition, since the first elastic piece and the second elastic piece are separated from each other via the slit, their deflections do not affect each other, so when the case is installed in the mounting hole of the mounting member, the second elastic piece Even if the piece is bent, the first elastic piece does not bend and the first claw does not come off the case engagement hole.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view of a switch case to which the present invention is applied, Figures 2 and 3 are sectional views showing how the switch is attached to the case, and Figures 4 and 5 are how the switch case is attached to the panel. FIG. 3 is a cross-sectional view showing the installation situation. DESCRIPTION OF SYMBOLS 1... Case, 1a... Flange part, 2... Switch, 3... Cover, 4... Engaging member, 5...
Panel, 6...Mounting hole, 9...Engagement hole, 10...
Guide, 11...first elastic piece, 12...second elastic piece, 13...first claw, 14...second claw.

Claims (1)

[Claims for Utility Model Registration] A mounting member having a mounting hole, a flange portion that abuts the upper edge of the mounting hole, and an engagement hole on the lower side of the flange portion for accommodating a component and A case that fits into the mounting hole, a cover that covers the case, and a U-shaped cross section made of a flexible plate-shaped metal material, one leg of which is separated by an inverted U-shaped slit. a first elastic piece on the central side portion and a second elastic piece on the outer side portion, and the first elastic piece has a first claw that engages the lower edge of the engagement hole of the case from the inside. , the second elastic piece has a second elastic piece that protrudes outward from the engagement hole and engages with the lower edge of the mounting hole.
an engaging member each provided with a claw and whose other leg is supported by a guide protruding from the inner surface of the cover to restrict movement in the same direction as the direction in which the cover is attached or removed; A case mounting structure characterized by comprising: