JPH0561926U - Switch mounting structure on support panel - Google Patents

Abstract

(57) [Summary] [Purpose] The switch is mounted on the back surface of the support panel that also serves as the decorative panel without using studs. [Structure] An elastic support piece 41 protruding from the support frame 21 is inserted into the edge portion of the switch window 20a of the support panel 20 from the back surface side and locked, and the window edge member 50 is inserted into the switch window 20a from the front surface side. The elastic support piece 41 is inserted and stopped. The window edge member 50 is prevented from coming off by the window edge member elastic locking piece 44 of the support frame 21.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch mounting structure for a support panel used when a flat pressing operation surface of a switch is exposed on a surface of a support panel that also serves as a decorative panel without protruding, such as an elevator operation panel.

[0002]

[Prior Art]

 Conventionally, an elevator operation panel is widely used in which the switch operation surface is exposed without protruding from the support panel, and the operation surface is illuminated from the inside to display the operation status. ..

As a conventional switch of this type, there is one shown in FIG. In the figure, 1 is a support panel that also serves as a decorative plate, and 2 is a printed circuit board fixed to a stud 3 that stands on the support panel 1. On the surface of the printed circuit board 2, a membrane switch 7 in which two flexible printed wiring boards (hereinafter referred to as FPC plates) 4 and 4 are overlapped via a spacer 5 and contacts 6 and 6 are opposed to each other is overlapped. The mold case 8 is placed on top of it and fixed to the substrate 2. An actuator 9 is movably accommodated in the mold case 8 and is always urged by a spring to the side away from the membrane switch 7. The actuator 9 has a projection 9a integrally formed on the bottom surface thereof, and the tip of the projection 9a faces the membrane switch 7 via the rubber cover 10.

On the other hand, in the molded case 8, light bulb sockets 11, 11 are provided so as to project, and the terminals 11 a, 11 a are connected to the circuit of the substrate 2. Light bulbs 12 and 12 are fitted into the light bulb sockets 11 and 11, respectively. The light bulbs 12 and 12 are inserted into the actuator 9 so as to penetrate the bottom surface thereof.

A translucent operating member 13 also serving as a display is fitted on the top of the actuator 9, and the surface thereof is exposed on the surface of the support panel 1.

[0006]

[Problems to be solved by the device]

 In the conventional switch mounting structure as described above, the stud 3 for supporting the substrate is provided on the back surface of the support panel 1, so that the stud 3 is protruded especially when the support panel 1 is a metal decorative panel such as stainless steel. There was a problem that the installation was not done by welding, but when welding, the hairline on the surface and the change in color due to the deterioration of the material appeared, which was not desirable in appearance.

In view of such conventional problems, the present invention has an object to provide a structure for mounting a switch without using the above-mentioned stud, by supporting it on the edge portion of a switch operation window having a wide opening.

[0008]

[Means for achieving the object]

 The feature of the present invention for solving the above-mentioned conventional problems and achieving the intended purpose is to expose a pressing surface for operating a pressing switch in a switch window opened in the supporting panel, and to support the supporting panel. In a switch mounting structure for mounting a push switch on a support panel, the push switch is supported on a switch support frame on the back side of the support panel, and the switch support frame has a support panel along the inner edge of the switch window. An elastic support piece that extends to the front surface side and integrally has a locking portion that is locked to the front surface side edge portion of the switch window, and a cylindrical window edge member inserted into the switch window from the support panel front surface side. A panel supporting the switch support frame by inserting the window edge member into the switch window to prevent the elastic support piece from coming off. Together to stop off for, it is to be the inserted window frame member was allowed retained at window edge member resilient locking pieces of the switch support frame.

[0009]

[Action]

 In the switch mounting structure of the present invention, the elastic support piece of the switch support frame is inserted from the back side of the support panel, and the locking portion at the tip is locked to the edge on the front side of the switch window. The switch support frame with respect to is retained. After that, by inserting the window edge member into the switch window from the surface side of the support panel, the movement of the elastic support piece in the disengagement direction of the locking portion is blocked, and the window edge member is It is secured to the switch support frame by the window edge member elastic locking piece.

[0010]

【Example】

 Next, an embodiment of the present invention will be described with reference to FIGS.

In the figure, 20 is a stainless steel support panel that also serves as a decorative plate, and a printed wiring board 22 is screwed to the support panel 20 via a metal switch support frame 21. A membrane switch 23, which is a switch constituent member, is stacked on the surface of the substrate 22, a mold case 24 is stacked thereon, and is screwed to the base plate 22.

The mold case 24 is opened on the side of the support panel, the actuator 25 is housed therein so as to be vertically slidable, and the mold case 24 is biased to the side of the support panel by a spring 26. On the bottom surface of the actuator 25, a switch pressing protrusion 25a is provided at the center thereof, and the switch pressing protrusion 25a faces the membrane switch 23 from the opening of the bottom surface of the mold case 24 via a rubber packing 27.

An illumination block 30 is fitted to the end portion of the actuator 25 on the support panel side. A translucent pressing operation head 31 is fitted on the top of the illumination block 30. The illumination block 30 is in the shape of a container with the top open, and the bottom of the illumination block 30 is fitted into the recessed portion of the top of the actuator 25, and a plurality of light emitting diodes 32, 32 ... The terminals 32a, 32a are projected from the bottom of the illumination block 30 and are connected to one end of a printed wiring (not shown) of the flexible lead wire 33 made of an FPC plate. The other end of the FPC plate 33 is fixed to the substrate 22, and their printed wirings are electrically connected to each other.

The pressing operation head 31 is formed of a translucent material, and the top portion is inserted into the window edge member 34 also as a guide fitted in the opening of the support panel 20, so that the operation surface 31 a of the top portion is It is exposed on the front surface side of the support panel 20. A mirror board 35, a character plate 36, and a light diffusion plate 37 are housed in the pressing operation head 31 so as to close the top opening of the illumination block 30.

Next, a mounting structure of the switch support frame 21 to the support panel 20 will be described.

The switch support frame 21 has a substantially rectangular box shape as a whole, and a pair of elastic support pieces 41, 41 are arranged on the top of the switch support frame 21 so as to face each other, and a pair of guide pieces 42 are arranged in a direction orthogonal to the elastic support pieces 41. , 42 and are provided. Outside the guide pieces 42, 42, two pairs of pressing spring pieces 43, 43 are provided so as to face each other so as to project from the side surfaces toward the center of the top. Further, on both sides of each elastic support piece 41, 41, one pair of window member elastic locking pieces 44, 44 are provided so as to face each other from the side surface of the frame 21 toward the center side. Among these members, the elastic support piece 41, the pressing spring piece 43, and the elastic locking piece 44 are integrally molded into one leaf spring member 21b, and the leaf spring member 21b is attached to the main body portion 21a of the frame 21. In contrast, they are fixed and integrated. The guide pieces 42, 42 are integrally formed with the main body 21a.

Each elastic support piece 41 is integrally provided with a locking portion 41 a formed by bending its tip end outward. The elastic locking piece 44 is integrally formed with a locking claw 44a whose tip is bent downward at a substantially right angle.

On the other hand, the support frame 21 is attached to the support panel 20 by the above-mentioned members and the window edge member 50. The window edge portion 50 is inside the rectangular switch window 20a opened in the support panel 20. It comprises a tubular portion 51 inserted from the panel surface side, and a flange portion 52 integrally formed on the outer periphery of the end portion. On the outer surface of the tubular portion 51, there are provided support piece fitting grooves 53, 53 into which the elastic support pieces 41 are fitted, and guide piece fitting grooves 54, 54 into which the guide pieces 42, 42 are fitted. In addition, the stepped portions 55, 55 with which the locking claws 44a of the elastic locking pieces 44, 44 are engaged are provided.

The support frame 21 is attached by bending the elastic support pieces 41, 41 in a direction in which they approach each other, and inserting the support frame 21 into the switch window 20a of the support panel 20 from the rear surface side thereof, and locking the tips. The portions 41a, 41a are locked to the outer surface side of one of the opposite edges of the switch window 20a.

At this time, the two guide pieces 42, 42 come into contact with the other opposing edge of the switch window 20a, and the pressing spring pieces 43, 43 come into contact with the back surface of the support panel 20 and are pressed, thereby supporting the support frame. 21 is urged in the pull-out direction on the back side.

Next, the tubular portion 51 of the window edge member 50 is inserted into the switch window 20a from the front surface side of the support panel 20. At this time, the elastic support piece 41 is fitted in the support piece fitting groove 53 on the outer circumference of the tubular portion, and the guide piece 42 is fitted in the guide piece fitting groove 54, so that the respective pieces 41, 42 are stopped. At the same time, the outer peripheral surface side of the switch window 20a is covered with the flange portion 52. Then, at the final insertion position of the tubular portion 51, the locking claw 44a of the elastic locking piece 44 is locked to each step 55 to prevent the window edge member 50 from coming off.

The above-described switch is incorporated in the support frame fixed to the support panel 20 in this manner, and the pressing operation head 31 is exposed from the inside of the window edge member 50 to the surface side of the support panel.

[0023]

[Effect of the device]

 As described above, in the switch mounting structure of the present invention, the elastic supporting piece is projected from the switch supporting frame and is locked outside the edge of the switch window of the supporting panel, and is inserted from the front side of the supporting panel. The window frame is locked against movement, and the frame frame is fixed to the support panel by locking the window frame to the support frame with elastic locking pieces to attach the switch. By doing so, studs are no longer required as in the past, the switch can be mounted without damaging the surface appearance of stud welding, and the switch support frame can be mounted with one touch. Workability has improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of an illuminated push switch according to the present invention.

FIG. 2 is a plan view of the above.

FIG. 3 is a perspective view of a switch support frame in the above embodiment.

FIG. 4 is a perspective view of the bottom surface of the window edge member of the above, viewed from obliquely below.

FIG. 5 is a vertical cross-sectional view showing a fixed state of the switch support frame with respect to the support panel.

6 is a cross-sectional view taken along the line AA in FIG.

7 is a sectional view taken along line BB in FIG.

FIG. 8 is a vertical sectional front view of a conventional example.

[Explanation of symbols]

 20 Support Panel 20a Switch Window 21 Switch Support Frame 21a Main Body 21b Leaf Spring Material 22 Printed Wiring Board 23 Membrane Switch 24 Molded Case 25 Actuator 26 Spring 27 Rubber Packing 30 Illumination Block 31 Pressing Operation Head 32 Light Emitting Diode 32a Terminal 33 Flexible Lead Wire 34 Window Edge Member 35 Mirror Board 36 Character Plate 37 Light Diffusing Plate 41 Elastic Support Piece 41a Locking Part 42 Guide Piece 43 Pressing Spring Piece 44 Window Member Elastic Locking Piece 44a Locking Claw 50 Window Edge Member 51 Cylindrical Section 52 Flange 53 Support piece fitting groove 54 Guide piece fitting groove 55 Step

Claims (1)

[Scope of utility model registration request] 1. A switch mounting structure for a supporting panel, wherein a pressing surface for operating a pressing switch is exposed in a switch window opened in the supporting panel, and the pressing switch is mounted on the supporting panel. An engaging portion that is supported on a switch support frame on the back side, extends along the inner edge of the switch window to the front surface side of the support panel, and has a tip that is engaged with the front edge of the switch window. And a window edge member elastic locking piece for preventing a tubular window edge member inserted from the front side of the support panel in the switch window from slipping off. The switch support frame with respect to the support panel by holding the elastic support piece in place to prevent the switch support frame from coming off. A switch mounting structure to a support panel, characterized in that an elastic locking piece of a window frame member of a holding frame prevents the switch from coming off.