JP2000222970A - Switch plate fixing structure of electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent coming off of a switch plate from a chassis even if a switch push button is pushed in the fixing structure of a switch plate having a switch push button to the chassis. SOLUTION: A plurality of hooking pieces 3, 3 for supporting a switch plate 4 are installed on a chassis 1, and the switch plate 4 has a switch push button 40 in a frame body 43 made of synthetic resin. The switch push button 40 consists of a flexible piece 42 projecting from the frame body 43 and a pressing piece 41 formed on the flexible piece 42 and exposed to the outside from a through hole 11 of the chassis 1, the switch plate 4 is attached between hooking pieces 3, 3 by bending the frame body 43 so that length of distance between facing sides of the frame body 43 to be engaged with the hooking pieces 3, 3 becomes short, and the flexible piece 42 is positioned within the surface perpendicularly crossing to the direction where the distance between the facing sides of the frame body 43 becomes short.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for mounting a switch plate provided with a switch push button which bends and deforms during operation to a chassis of an electronic device.

[0002]

2. Description of the Related Art Conventionally, a switch plate facing an electric switch is mounted inside a chassis provided by injection molding. The applicant has devised the structure shown in FIG. 6 as a mounting structure of the switch plate. This is provided with a plurality of hooking pieces (3) and (3) which support the switch plate (4) on the chassis (1). The switch plate (4) has a switch push button (40) on a frame (43) made of synthetic resin, and the switch push button (40) is a flexure piece projecting inward from the frame (43). (42) and a pressing piece (4) formed on the bending piece (42).
1). Switch push buttons (4
There is provided an electric switch (not shown) that is pressed at 0). As shown by the arrow A, the switch plate (4) is bent so that the distance between two opposing points of the switch plates (4) and (4) to be engaged with the hook pieces (3) and (3) is shortened. The switch plate (4) is supported between the hooking pieces (3) and (3), and the holding piece (41) is attached to the chassis.
It is exposed to the outside through the through hole (11) opened in (1). In the mounting structure of the switch plate (4), the switch plate (4) can be easily manufactured by injection molding of a synthetic resin, and the switch plate (4) can be easily mounted. In addition, the applicant has the chassis (1)
Is formed by injection molding of a metal to give a high-grade appearance and enhance rigidity.

[0003]

However, when the switch plate (4) is mounted on the chassis (1), the switch push button (4) is moved in such a direction that the length between two opposing points of the frame (43) becomes shorter. 40) (4
Since the push button (40) (40) is pressed, the base end of the push button (40) (40) bends and the frame body (43) bends at the same time. It has been found that the length of the gap is short and there is a possibility that the gap may come off the frame (43). An object of the present invention is to provide a structure in which a frame provided with a switch push button is mounted on a chassis so that the frame is hard to come off from the chassis even when the switch push button is pushed.

[0004]

A plurality of hooks (3) (3) are provided on a chassis (1) for supporting a switch plate (4) with the switch plate (4) interposed therebetween. The switch plate (4) is made of synthetic resin. Has a switch push button (40) on the frame (43) formed by. The switch push button (40) includes a flexible piece (42) protruding from the frame (43), and the flexible piece (42).
A frame (43) to be engaged with the hooking pieces (3) and (3) and formed of a pressing piece (41) formed on the chassis (1) and exposed to the outside through the through hole (11) of the chassis (1). (4) so that the distance between the opposite sides of
The switch plate (4) is mounted between the hooking pieces (3) and (3) by bending the 3), and the bending piece () is placed in a plane substantially orthogonal to the direction in which the opposite side of the frame body (43) is shortened. 42) is located.

[0005]

The surface including the direction in which the distance between the opposite sides of the frame body (43) of the switch plate (4) is shortened and the surface including the bending deformation direction of the bending piece (42) are substantially orthogonal to each other. Thereby, even if the switch push button (40) is operated in a state where the switch plate (4) is fitted between the hooking pieces (3) and (3), the bending piece (42) is bent and deformed,
The amount by which the switch plate (4) bends and deforms in a direction away from the hooking pieces (3) and (3) is negligible. Therefore, the operation of the switch push button (40) does not cause the switch plate (4) to be deformed so as to be disengaged from the two hook pieces (3) (3). Stable mounting and increased reliability.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example of the present invention will be described in detail with reference to the drawings. The same reference numerals are used for the same configuration as the conventional one. In this example, the chassis (1) is an electronic device, specifically, a cabinet of a digital still camera, and the switch plate (4) is a support for a switch push button of the camera. 1 and 2 are perspective views of the digital still camera. FIG. 1 is a view from the front side, and FIG. 2 is a view from the back side. The camera cabinet (2) has switch push buttons (40) (4
(0) is arranged on the upper surface, and a second chassis (10) having an imaging lens (20) on the front surface and a display unit (21) on the upper surface is abutted against each other. Is done. First,
The second chassis (1) (10) is formed by injection-molding an alloy containing magnesium, thereby giving a high-grade appearance and high rigidity. Switch push button
(40) and (40) are operated when the timer is set and the strobe is used, and the display unit (21) indicates, for example, the set timer time. On the back side of the first chassis (1), there is provided a liquid crystal panel (22) for displaying a captured image or an image being captured.

FIG. 3 is a perspective view in which the first chassis (1) is turned upside down and viewed from the back side. The first chassis (1) is provided with through holes (11) and (11) into which the switch push buttons (40) and (40) are inserted, and a pair of opposing holes is formed on both sides of the through holes (11) and (11). Hook pieces (3) and (3) are provided. Each hook piece (3)
A horizontal piece (31) protrudes inward from the tip of a vertical piece (30) erected from the first chassis (1), and the switch push button (40) is provided between the hook pieces (3) and (3). (4) Switch board with)
However, it is bent and attached as described later. As shown in FIG. 5, the switch plate (4) is provided with a substantially rectangular frame (43) having an opening (45) in the center, and hooking pieces (3) (3) from both sides of the frame (43). The protruding pieces (44) and (44) locked to the outer side protrude outward. As shown in FIG. 5, the switch push button (40) includes a pressing piece (41) located in the opening (45) of the frame (43) and a pressing piece (4).
It comprises a flexible piece (42) projecting forward or backward from 1) and connected to the frame (43). When the pressing piece (41) is pushed in from below, the bending piece (42) is bent and deformed in a plane L2 orthogonal to the upper surface of the switch plate (4). With the switch plate (4) attached between the hooking pieces (3) and (3), the holding piece (41)
Protrudes outside the first chassis (1) through the through holes (11) (11) shown in FIG.

When the switch plate (4) is attached to the hook pieces (3) and (3), the pressing piece (41) of the switch push button (40) is inserted through the through hole (1).
Since it must be inserted in 1), it is necessary to insert it from above the hooking pieces (3) and (3). First, as shown in FIG. 4 (a), one projecting piece (44) is hooked on the hooking piece (3). next,
The switch plate (4) is pressed from both sides to bend and deform so that the distance between the projecting pieces (44) and (44) becomes shorter. The other protruding piece (44) is hooked on the corresponding hooking piece (3) while inserting the switch push button (40) bent with the bulge upward in the through hole (11). As shown in FIG. 4 (b), the switch plate (4) is elastically restored, and the protruding pieces (44, 44) are located below the horizontal piece (31) of the hooking piece (3). As a result, the switch plate (4) is connected to the chassis (1).
Is prevented from coming off. When attaching the switch plate (4) to the hook piece (3), as shown by a dotted line in FIG.
The projecting pieces (44) and (44) may be pressed from both sides to bend both sides of the frame (43).

In this case, the switch plate (4) bends and deforms in a plane (L1 in FIG. 5) perpendicular to the upper surface of the switch plate (4) and extends to the left and right. The plate (4) bends and deforms in a plane (L2 in FIG. 5) perpendicular to the upper surface and extending forward and backward. In other words, the switch plate (4) and the bending piece (42) are bent and deformed in planes L1 and L2 orthogonal to each other. As a result, even if the switch push button (40) is pushed in and the bending piece (42) is bent and deformed, the switch plate (4) is perpendicular to the upper surface of the switch plate (4) within a plane L1 extending right and left. The amount of bending deformation is negligible. That is, the switch plate (4) is a hook
(3) It does not deform so much as to deviate from (3). Therefore, depending on the operation of the switch push button (40), the switch plate
The switch plate (4) is hardly subjected to an inadvertent force to bend and deform the (4) away from the hook pieces (3) and (3).
Is stable to the chassis (1).

In the present embodiment, two hooking pieces (3) and (3) are provided, but the number is not limited to two and may be two or more. Also, the frame (43) only needs to have two opposing sides,
It is not limited to a square as shown in FIG. Further, in FIG. 3, the bending piece (42) protrudes inward from the frame (43), but may protrude outward.

The description of the above embodiments is for the purpose of illustrating the present invention and should not be construed as limiting the invention described in the appended claims or reducing the scope thereof. Further, the configuration of each part of the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made within the technical scope described in the claims.

[Brief description of the drawings]

FIG. 1 is a perspective view of a digital still camera viewed from a front side.

FIG. 2 is a perspective view of the digital still camera as viewed from the back side.

FIG. 3 is a perspective view in which a chassis is turned upside down.

FIG. 4A is a front view showing a state where the switch plate is attached to the hooking piece, and FIG. 4B is a front view after the switch plate is attached to the hooking piece.

FIG. 5 is a plan view of a switch plate.

FIG. 6 is a sectional side view of a conventional switch plate and chassis.

[Explanation of symbols]

 (1) Chassis (3) Hook (4) Switch plate (40) Switch push button (41) Holder (42) Flexure

Claims (1)

[Claims] A switch push button (40) that bends and deforms during operation.
A mounting structure for a switch plate (4) mounted on a chassis (1) of an electronic device, comprising a plurality of hooks (4) supported on the chassis (1) with the switch plate (4) interposed therebetween. 3) and (3) are provided, and the switch plate (4) has a switch push button (40) on a frame (43) made of synthetic resin, and the switch push button (40) is provided on the frame (43). ) And a chassis formed on the flexible piece (42).
A holding piece (41) exposed to the outside from the through hole (11) of (1) so that the distance between opposite sides of the frame (43) to be engaged with the hooking pieces (3) (3) is shortened. The frame (43) is bent and the hook (3)
A switch plate (4) is mounted between (3) and the bending piece (42) is placed in a plane substantially perpendicular to the direction in which the distance between the opposite sides of the frame (43) is shortened.
Wherein the switch plate of the electronic device is mounted.