JP3185197U - Push-button switch - Google Patents

Abstract

Provided is a push button switch which can be operated with a suitable load even on a button having a large outer diameter and has a waterproof function against intrusion water.
A switch main body 10 assembled via a switch mounting member 4 and a switch shaft of the switch main body are fitted to the back side of the control panel 3, and are fitted and fixed to a mounting window hole 3a of the control panel. A push button switch that includes a push button 1 that protrudes from the switch decorative member hole C of the switch decorative member 2 to the front side of the control panel, and that opens and closes an electric circuit of the switch body by pressing the push button. A groove-shaped intrusion water blocking flange 1b is provided on the outer peripheral portion of the push button located on the back side of the panel, and when the cylindrical portion 2a of the switch decorative member enters the groove of the intrusion water blocking flange 1b, the intrusion of intrusion water The route is a maze.
[Selection] Figure 1

Description

  The present invention relates to a push button switch mounting structure that is mounted on a control panel of an electric device and used for power ON / OFF switching, and water and dust falling on the front side of the control panel are incorporated on the back side. The present invention relates to a structure that can be installed without impairing the appearance of the switch while preventing the inside of the switch body from entering.

  In general, a push button switch used for switching ON / OFF of a power source of an electric device or the like is installed on the back side of a control panel and a switch body is incorporated. Then, a push button is slidably (moved) fitted to the switch shaft protruding in the axial direction from the housing of the switch body, and is pushed to the front side from the button protruding hole opened in the control panel. The switch body can be opened and closed by pressing the switch.

  Since electrical equipment may be used outdoors such as construction sites, the control panel is provided with a door for shutting off from the outside. However, since the operator often forgets to close the door after operating the control panel, wind and rain may hit the control panel directly. Therefore, reliable waterproof and dustproof performance is required even when the door is open.

  Therefore, conventionally, a flange projecting outward is provided on the peripheral edge of the push button, and an annular rib is provided on the outer peripheral edge of the flange. There has been proposed a waterproof structure of a push button switch configured to prevent a part of invaded water from flowing into and touching the switch body. (See, for example, Patent Document 1).

  By the way, as shown in FIGS. 1 and 2 and paragraph 0017 of Patent Document 1, the prior art described in Patent Document 1 is water that has entered the body 7 through the gap between the hole 8 and the button 9. Since it can be blocked by the waterproof wall 13 and reach the shaft support portion 12, it can be seen that a waterproof effect for preventing the intrusion water from flowing to the switch frame 16 can be obtained.

  In addition, as shown in FIG. 3 and paragraph 0007 of Patent Document 2, the conventional technique described in Patent Document 2 has a case where water has entered the body cover from the gap between the button and the button projecting hole. Further, an improved waterproof structure has been proposed that also has a waterproof function against intruded water that has entered from the contact portion between the switch decorative member and the periphery of the mounting window hole.

  A typical example of a method for attaching to an operation panel (control panel) is described in Patent Document 3. As described in FIG. 2 and paragraph 0018 of the same document 3, the cylindrical portion 1b of the operation case 1 is inserted into the mounting hole of the operation panel 4, and the nut 5 is screwed to the cylindrical portion 1b and tightened. There has been proposed a structure in which the operation case 1 is fixed to the operation panel 4 and then the switch case 2 is attached to the cylindrical portion 1b from the back side of the operation panel 4.

  Further, in the prior art described in Patent Document 3, a rubber sealing 36 is fitted on the outer periphery of the plunger main body 30 of the operation plunger 3 as described in FIG. The sealing 36 is in sliding contact with the inner peripheral surface of the cylindrical portion 1 b in the operation case 1, thereby preventing liquid and dust from entering the operation case 1.

JP 2007-188761 A (see paragraph number 0017 and FIGS. 1 and 2) JP 2010-129195 A (see paragraph number 0007 and FIG. 3) JP 1999-1111096 (see paragraph numbers 0018 and 0025 and FIGS. 2 and 3)

  In the prior art described in Patent Documents 1 and 2, when rainwater pours around the push button, depending on the size of the gap between the button and the button projection hole, the momentum of rainwater that enters and the amount increases. There is a limit to the waterproofing effect under such circumstances. In the case described in Patent Document 3, since a rubber packing is used, a waterproof effect can be expected even under the above-described circumstances.

  6 to 8 illustrate a conventional embodiment in which a push button switch is mounted on a control panel. In FIG. 6, when the screw is tightened, a portion of the switch decorative member located on the front side of the panel is grasped so as to be tightened. In FIG. 7, the switch mounting base located on the back side of the control panel is fastened with a small screw through a screw hole from the front side of the control panel, and the switch decorative member is fastened by snap fitting from the front side of the control panel, thereby concealing the small screw portion. I have to. 6 and 7 have many geometric restrictions such as the size of the switch decorative member located on the front side of the panel. In the embodiment of FIG. 8, the structure is fixed to the panel using a spring clip, and the switch body is smaller than the hole of the control panel, although there are few restrictions on the shape such as the size of the switch decorative member located on the panel front side. It is necessary to do.

  Therefore, the present invention has been devised to solve the above-described problems, and improves the waterproofness against the intrusion water from the gap between the push button and the switch decorative member and the operability of the switch, and the switch decorative member. An object of the present invention is to provide a structure that can be attached to a control panel without impairing the design of the portion located on the front side of the panel.

  In order to solve the above-mentioned problems, in the present invention, a switch body incorporated via a switch mounting member on the back side of a control panel of electrical equipment, and a slidable (movable) fit to the switch shaft of the switch body And a button protruding to the front side of the control panel from a button protruding hole of the switch decorative member fitted and fixed to the mounting window hole of the control panel, and by pressing the button, The push button switch is configured to open and close an electric circuit, and includes a groove-shaped intrusion water blocking flange on an outer peripheral portion of the button located on the back side of the control panel.

  The switch mounting base is screwed to the switch decorative member inserted from the front side into the hole of the control panel and fixed to the panel. At this time, a plurality of notches are provided at the end of the cylindrical portion of the switch decorative member, and the notch can be used to tighten the screw with the switch mounting base.

  The push button portion of the switch body passes through the switch decorative member hole and is located at a position where it can be operated on the front side of the control panel, and the switch body is fixedly fitted to the switch mounting base. At the same time, the cylindrical portion of the switch decorative member enters the groove of the intruding water blocking flange of the push button while maintaining an appropriate gap.

  According to the push button switch mounting structure of the present invention, the exposed portion of the switch decorative member located on the front side of the control panel has a circular design, and even if it has an elusive shape such as a jig, the end of the cylindrical portion A screw can be tightened using a notch. For this reason, the decorative member exposed on the front side of the control panel can be designed with a sense of unity that matches the panel. Further, another component such as a nut is unnecessary, and an inexpensive configuration can be achieved.

  According to the waterproof structure of the push button switch of the present invention, the momentum of the intrusion water that has entered from the gap between the push button and the switch decorative member hole is constituted by the intrusion water blocking flange of the push button and the cylindrical portion of the switch decorative member. It can be stopped by the labyrinth structure, and intrusion water can be prevented from entering the inside of the switch body. This eliminates the need for packing-like waterproof parts that are in sliding contact with the push button, so that an inexpensive configuration is possible, and there are no parts that are in sliding contact with the push button. can do.

The pushbutton switch which concerns on the Example of this invention is a vertical side view of the state which attached the control panel, The figure which shows the protrusion state before a pushbutton is pushed The figure which shows the immersive state when the push button is pushed Explanatory diagram of the weir effect against intrusion water Perspective view of switch decorative member Perspective view of switch mounting base A conventional mounting embodiment in which the outer periphery of the switch decorative member located on the front side of the panel is picked and the screw with the switch mounting base is tightened. A conventional mounting embodiment in which a switch mounting base located on the back side of a control panel is tightened with a small screw through a screw hole from the front side of the control panel, and the small screw portion is blinded with a switch decorative member. A conventional mounting embodiment in which a switch in which a switch body and a switch decorative member are integrated is inserted from the front side of a hole of a control panel and is stopped by a spring clip.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
FIG. 1 is a longitudinal side view showing the push button switch A of the present invention attached to the control panel 3, FIG. 4 is a perspective view of a switch decorative member, and FIG. 5 is a perspective view of the switch mounting member. .

  The push button switch A is used by being attached to the control panel 3 of the industrial electrical equipment together with other switches and instruments. In this embodiment, ON / OFF of the main power supply is alternately switched by pressing the push button switch A. Since this industrial electric device is often used outdoors, the control panel 3 is provided with a cover that can be opened and closed. Here, the waterproof function will be described assuming a situation in which wind and rain directly hit the control panel because the cover is forgotten to close.

<Push button switch configuration>
As shown in FIGS. 1, 4, and 5, the push button switch A includes a switch body 10, a switch decorative member 2 for mounting the switch body 10 on the control panel 3, and a switch mounting base 4. Has been. The push button 1 is exposed on the front side of the control panel 3 so that it can be pushed, and the push shaft 1c is fitted to the push shaft 5a of the push switch 5 so that the push switch can be turned on / off. Yes.

  Although not shown, the electrical terminal of the push switch 5 is electrically connected to the wiring pattern of the switch substrate 8 by a well-known technique, and constitutes an electrical circuit together with the light emitting diode 7. When the push switch 5 is in the ON state, the light emitting diode 7 emits light, and the characters on the surface of the push button 1 are transmitted to make it clear that the switch is in the ON state.

  The switch body 6 is a molded product of a synthetic resin material. The switch body 6 wraps around the switch board 8 and is movable with the cylindrical portion 1a of the push button 1 so that the cylindrical portion 6a of the switch body 6 can be operated. Is fitted. Further, since a cover 9 is fitted to the switch body 6, water and dust do not easily enter the inside of the switch body.

<Push button switch mounting configuration>
The switch decorative member 2 is inserted into the switch mounting hole 3a of the control panel 3 from the front side of the control panel 3, sandwiches the control panel 3 together with the switch mounting base 4 on the back surface of the control panel 3, and is tightened with the B part screw. Each is fixed to the control panel 3. At that time, since the end of the cylindrical portion 2a of the switch decorative member 2 shown in FIG. 4 protrudes from the female screw portion 4b of the switch mounting base 4 at the time of temporary tightening, the end portion of the cylindrical portion 2a has a notch 2c. It is possible to tighten by fitting the jig.

  The switch mounting base 4 fixed to the control panel 3 is a synthetic resin molded part, and four resin pieces 4a with hooks are provided. When the push button 1 of the switch body 10 is inserted and pushed into the switch decorative member hole C from the back side of the control panel 3, the hooked resin piece 4a comes into contact with the claw portion 6b of the switch body 6, and when pushed further, the resin piece with hook. The switch body 10 is fitted to the switch mounting base 4 by bending the hook 4a of the claw 6b of the switch body 6 and the hooked resin piece 4a.

<Configuration of the intrusion water weir flange>
As shown in FIG. 1 in which the push button switch A is attached to the control panel 3, the cylindrical portion 2a of the switch decorative member 2 is provided in the groove of the intrusion water blocking flange 1b provided on the circumference of the push button 1. Enters the inner and outer diameters with an appropriate gap.

[Description of operation]
Next, a waterproof structure of the push button switch A according to the embodiment configured as described above will be described. FIG. 3 illustrates the flow of intrusion water that has entered from the gap between the switch decorative member hole C of the switch decorative member 2 and the push button 1 with a broken arrow. Since the cylindrical portion 2a of the switch decorative member 2 enters the groove of the intruding water blocking flange 1b as shown in the drawing, the inflowing water becomes a labyrinth and the inflowing water flow can be suppressed. Slightly leaking ingress water is guided by the projecting portion 1d of the push button 1 and falls, so that ingress water into the switch body can be reliably prevented.

A Push button switch B Screw part C Switch decorative member hole 1 Push button 1a Cylindrical part 1b Intrusion water weir flange 1c Push shaft 1d Projecting part 2 Switch decorative member 2a Cylindrical part 2b Male screw part 2c Notch part 3 Control panel 3a Switch Mounting hole 4 Switch mounting base 4a Hook resin piece 4b Female screw part 5 Push switch 5a Push shaft 6 Switch body 6a Cylindrical part 6b Claw part 7 Light emitting diode 8 Switch substrate 9 Cover 10 Switch body 11 Small screw 12 Switch-integrated decorative member 13 Spring clip

Claims (2)

The control is performed from a switch body incorporated at least through a switch mounting member on the back side of the control panel of the electrical equipment, and a button projecting hole opened in the switch decorative member fitted and fixed to the mounting hole of the control panel. A push button switch that is configured to open and close an electric circuit of the switch body by a push operation of the button, the button being located on the back side of the control panel. A groove-shaped intrusion water damming flange is provided at the outer peripheral portion in the axial direction of the shaft, and the cylindrical portion of the switch decorative member is configured to enter the groove of the intrusion water damming flange of the button. Features a push button switch. A switch located inside the control panel in a configuration in which a control panel is sandwiched between the switch decorative member and the switch mounting base, and is fastened by a male screw of the switch decorative member and a female screw of the switch mounting base, and fixed to the control panel. 2. The push button switch according to claim 1, wherein a plurality of notches are provided at an end of the cylindrical portion of the decorative member.

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