JP2008108537A - Installation device of operation switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an installation device of an operation switch in which one component acts both functions of turning stop of an operation switch and loosening stop of a tightening nut. <P>SOLUTION: A washer is provided in which a through hole capable of inserting an operation switch cylindrical part is provided at the center of a flat plate, projections to engage with a vertical groove and a cut-out of an installation hole of the cylindrical part are formed respectively at the inner fringe of this through hole, and a pressing part which is partially bent to one side of the flat plate face and has a slightly inclined outer fringe is provided at the outer fringe part. The washer is inserted into the cylindrical part of the operation main body of the operation switch inserted in the installation hole of an installation panel, and the projections of the inner fringe of the through hole of the washer is engaged with the vertical groove of the cylindrical part and the cut-out of the inner fringe of the installation hole of the installation panel, then, the tightening nut is screwed to the cylindrical part and the pressing part of the washer is contacted to the installation panel to be tightened and jointed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an attachment device that can attach an operation switch to a mounting hole of a panel of a control panel while preventing the operation switch from rotating.

  As a device for attaching this type of operation switch capable of preventing rotation, a device as shown in Patent Document 1 has been known.

  7 to 9 show a conventional operation switch mounting apparatus disclosed in Patent Document 1. FIG. In this conventional apparatus, the operation switch main body 1 of the operation switch is provided with a flange 2 having a diameter larger than the circular mounting hole 11a formed in the mounting panel 11 and a rear surface of the flange 2 so as to protrude from the panel mounting hole. A cylindrical portion 3 smaller than the diameter and threaded on the outer periphery, and the cylindrical portion 3 is inserted into the mounting hole 11a from the front surface side of the panel 11 and tightened to the cylindrical portion 3 from the back side of the panel 11 The operation unit body 1 is fixed to the panel 11 by screwing the nut 5. A switch portion 10 that is opened and closed in conjunction with the operation of the operation portion main body 1 is coupled to the tip of the cylindrical portion 3.

In order to prevent the operation unit main body 1 from rotating when the operation unit main body 1 attached to the panel 11 is twisted, one or more longitudinal grooves are formed by cutting off the screw in the axial direction in the cylindrical portion 3. 3 c is provided, and one or more notches 11 b are provided on the inner edge of the mounting hole 11 a of the mounting panel 11. And the washer 6 which has the insertion hole 6a which can insert the said cylindrical part 3 is provided, The protrusion 6b fitted to the vertical groove of the said cylindrical part at the inner edge of this insertion hole 6a of this washer, and attachment of the attachment panel 11 A projection 6c that fits into the notch 11b of the hole 11a is formed (see FIGS. 8 and 9), the washer 6 is inserted between the mounting panel 11 and the tightening nut 5, and the tightening nut 5 is cylindrical. The operation unit body 1 is tightened and fixed to the panel 11 by screwing into the unit 3. By inserting the washer 6 in this manner, the projection 6c of the washer 6 is fitted into the notch 11b of the attachment hole 11a of the attachment panel 11, and the washer 6 and the attachment panel 11 are prevented from rotating, and the washer is 6 projections 6b are fitted into the vertical grooves 3c of the cylindrical portion 3 to prevent the operation portion main body 1 and the washer 6 and hence the mounting panel 11 from rotating.
Japanese Utility Model Publication No. 6-12575

  According to the conventional mounting device described above, the operation switch attached to the mounting panel or the like can be prevented by inserting a washer with a protrusion, but there is no loosening prevention function for the tightening nut, so there is a lot of vibration. When used for a long time in a location, the tightening nut 5 will loosen due to external forces such as vibration, and the operation switch will not stop rotating. Even if the operation switch is twisted, the operation switch will rotate within the mounting hole. , Operation may become impossible.

  For this reason, when used in a place with a lot of vibrations, it has been necessary to use another part such as a spring washer together to prevent the tightening nut from loosening.

  In view of such a conventional apparatus, the present invention provides an operation switch mounting device that has a simplified structure in which a part for preventing rotation of the operation switch has a function of preventing the tightening nut from loosening at the same time. It is to be an issue.

  In order to solve such a problem, the present invention provides an operation switch including an operation portion to be twisted, a flange portion continuously provided on the back side of the operation portion, and a cylindrical portion having a threaded outer periphery. The operation unit body is inserted into the circular mounting hole of the mounting panel from the front side of the panel, and a tightening nut is screwed into the cylindrical part from the back side of the mounting panel. In the mounting device of the operation switch to be coupled tightly, one or more vertical grooves formed by cutting off the screw in the axial direction in the cylindrical portion, and one or more notches formed at the inner edge of the mounting hole of the mounting panel And a flat washer, and this washer is provided with a pressing portion with an outer edge portion that is inclined toward one surface side of the flat plate surface and protruded toward the operation panel from the plane of the center portion. The cylindrical part can be inserted into the center part. An operation portion provided with a through hole, and a projection that fits into the longitudinal groove of the cylindrical portion and the notch of the mounting hole of the mounting panel is formed on the inner edge of the insertion hole, and is inserted into the mounting hole of the mounting panel The washer is fitted into the cylindrical portion of the main body, and the protrusion on the inner edge of the insertion hole of the washer is fitted into the notch in the vertical groove of the cylindrical portion and the inner edge of the mounting hole of the mounting panel. A nut is screwed into the cylindrical portion, and the operation portion main body is tightened and coupled to the mounting panel.

  In this invention, the said washer is formed with a polygonal flat plate, and the front-end | tip part of the corner | angular part which inclined the corner | angular part of this polygonal flat plate and made it forward can be made into a press part. And the said washer is formed with a circular flat plate, and the outer edge part which inclined the outer peripheral part of this circular flat plate and made it forward can also be made into a press part.

  According to the present invention, not only is the protrusion for preventing rotation provided on the washer inserted between the mounting panel on which the operation unit body of the operation switch is mounted and the tightening nut, but the outer peripheral portion is slightly attached to the mounting panel side. Since the pressing part is formed by the outer edge part which is inclined forward, the pressing part comes into contact with the mounting panel when the pressing part of the washer is pressed against the mounting panel by the clamping nut, and the clamping nut Since the tightening force can be applied via the elastic force of the flat plate forming the washer, the reaction force of the elastic force of this washer is applied to the tightening nut, so that the tightening nut can receive external forces such as vibration. It becomes difficult to loosen, and the tightening force of the operation switch can be kept stable. Therefore, the washer according to the present invention acts as both an anti-rotation of the operation switch and an anti-loosening of the tightening nut with one component, so that the number of components of the mounting device is reduced and the configuration of the device can be simplified. .

  Embodiments of the present invention will be described with reference to the embodiments shown in the drawings.

  1 to 5 show an embodiment of the present invention. 1 is an exploded perspective view in the process of mounting the operation switch to the mounting panel 11, FIG. 2 is a perspective view and a plan view of the washer 7 used in the present invention, and FIG. 3 is a mounting of the operation switch to the mounting panel. FIG. 4 is a plan view showing the mounting state of the operation switch, FIG. 5 is an enlarged plan view showing a portion A in FIG. 4, and the same members as those in the conventional apparatus are denoted by the same reference numerals. Attached is shown.

  In FIG. 1 to FIG. 5, reference numeral 1 denotes an operation portion main body of an operation switch which is provided with a flange 2 and a cylindrical portion 3 having a threaded outer periphery and which is operated to be twisted and pressed. A switch portion 10 that opens and closes in conjunction with the operation of the operation portion main body 1 is coupled to the tip of the cylindrical portion 3 of the main body.

  In the circular mounting hole 11a provided in the mounting panel 11, the cylindrical portion 3 of the operation unit body inserted from the front surface side of the panel is provided with one or more longitudinal grooves in the axial direction by cutting off screws on the outer periphery. One or more notches 11b are provided on the inner edge of the mounting hole 11a through which the tubular portion 3 is inserted. The cylindrical portion 3 of the operation portion main body 1 inserted through the attachment hole 11a of the attachment panel 11 is operated from the back side of the panel 11 to both prevent rotation of the operation switch and to prevent the tightening nut from loosening. The fastening nut 5 is screwed through the constructed washer 7.

  As shown in FIG. 2, the washer 7 is made of a metal plate having a square elasticity, and includes an insertion hole 7a through which the cylindrical portion 3 of the operation unit main body 1 is inserted at the center. The same number of protrusions 7b and 7c as the vertical grooves 3a and the notches 11b are fitted into the vertical grooves 3a of the cylindrical portion 3 and the notches 11b of the mounting holes 11a of the mounting panel 11, respectively. Then, at the corners of the four corners of the square flat plate, this portion is slightly bent in the same direction, and the outer edge end portion is inclined to the mounting panel 11 side, thereby forming the pressing portion 7d that protrudes forward from the central plane. (See FIG. 2 (b)).

  The fastening nut 5 is screwed onto the mounting panel 11 side on the tubular portion 3 through the washer 7 configured as described above, and the flange 2 and the fastening nut 5 of the operation portion main body 1 are shown in FIGS. By tightening the panel 11 as described above, the operation portion main body 1 is fastened and fixed to the mounting panel 11.

At this time, the projections 7b and 7c of the washer 7 are fitted into the longitudinal groove 3a of the cylindrical portion 3 of the operation portion main body 1 and the notch 11b of the attachment hole 11a of the attachment panel 11, respectively. 11, and the operation unit main body 1 is prevented from rotating by the washer 7. Therefore, even if the operation unit main body 1 is twisted, the operation switch is stably fixed without rotating with respect to the mounting panel 11. Become so.

  In such a state where the operation switch is mounted, the pressing portions 7d formed at the four corners of the washer 7 are slightly inclined toward the mounting panel 11 as shown in FIGS. The outer edge portion of the pressing portion 7 d comes into contact with the mounting panel 11, and the central plane portion is separated from the mounting panel 11. When the tightening nut 5 tightens the central portion of the washer 7, the washer 7 is elastically deformed, and the attachment panel 11 is pressed against the flange 2 of the operation portion main body 1 by the elastic force, so that the operation portion main body 1 is attached to the attachment panel 11. To become fixed. The reaction force of the elastic force of the washer 7 is applied to the tightening nut 5. Therefore, in the tightened state, the tightening nut 5 can tighten the operation portion main body 1 of the operation switch to the mounting panel 11 with a stable tightening force without being loosened even when an external force such as vibration is received.

  As described above, in the present invention, the washer 7 is provided with a pressing portion whose outer edge portion is slightly inclined toward the mounting panel in addition to the rotation-preventing projection. Therefore, the washer 7 is tightened when the tightening nut is tightened. So that the outer edge of the abutment comes into contact with the mounting panel, and the central portion is separated from the mounting panel, and functions as a spring washer, so that the washer 7 acts to prevent the tightening nut from loosening as well as to prevent rotation. Thus, with this single washer, the operation switch can be prevented from rotating and the tightening nut can be prevented from loosening, so that the structure of the mounting device is simplified.

  In the present invention, the washer 7 may be an appropriate polygonal shape as shown in the figure, instead of being square.

  Further, the washer 7 may be formed in a circular shape as shown in FIG. In the case of a circular shape, the outer peripheral edge portion of the circular flat plate is inclined to one surface side to be dish-shaped, and the entire outer peripheral edge is moved forward from the plane of the central portion to be a pressing portion. Thereby, the washer 7 exhibits a function equivalent to a disc spring. Naturally, projections 7b and 7c are provided on the inner edge of the insertion hole 7a provided in the central portion and fitted into the longitudinal groove 3a of the cylindrical portion of the operation portion body 1 and the notch 11b of the inner edge of the attachment hole 11a of the attachment panel 11. . This circular washer can be used just like a square washer.

The disassembled perspective view which shows the Example of this invention. The washer used for this invention is shown, (a) is a perspective view, (b) is a top view. The perspective view which shows the Example of this invention. The top view which shows the Example of this invention. The top view which expands and shows the A section in FIG. The perspective view which shows the washer of the other shape used for this invention. The top view which shows a conventional apparatus. The perspective view of the washer used for the conventional apparatus. The longitudinal cross-sectional view of the attachment state of the conventional apparatus.

Explanation of symbols

1: Operation switch main body 2: Flange 3: Cylindrical part 5: Tightening nut 7: Washer 7a: Insertion hole 7b: Protrusion 7c: Protrusion 7d: Pressing part 10: Switch part 11: Mounting panel

Claims (3)

  The operation unit main body of the operation switch having the operation unit to be twisted, the flange unit connected to the back side of the operation unit, and the cylindrical unit threaded on the outer periphery is connected to the circular mounting hole of the mounting panel. In the mounting device of the operation switch, which is inserted from the front surface side of the panel, and a tightening nut is screwed into the tubular portion from the back surface side of the mounting panel, and the operation portion main body of the operation switch is fastened to the mounting panel. One or more vertical grooves formed by cutting off the screw in the axial direction, one or more notches formed at the inner edge of the mounting hole of the mounting panel, and a flat washer are provided on the washer. The outer edge portion is inclined to one surface side of the flat plate surface, the outer edge portion is provided with a pressing portion that protrudes toward the operation panel from the plane of the center portion, and the insertion hole through which the cylindrical portion can be inserted is provided at the center portion. And the cylinders at the inner edges of the insertion holes A projection that fits into the longitudinal groove of the mounting portion and the mounting hole of the mounting panel is formed, and the washer is fitted into the cylindrical portion of the operation unit main body that is inserted into the mounting hole of the mounting panel. After fitting the protrusion on the inner edge of the hole into the longitudinal groove of the cylindrical part and the notch on the inner edge of the mounting hole of the mounting panel, the tightening nut is screwed into the cylindrical part to attach the operation part main body. A device for mounting an operation switch characterized by being tightly coupled to a panel.   2. The operation switch mounting device according to claim 1, wherein the washer is formed of a polygonal flat plate, and a corner portion of the polygonal flat plate is inclined so that a tip portion of the corner portion serves as a pressing portion.   2. The operation switch mounting device according to claim 1, wherein the washer is formed of a circular flat plate, and the outer peripheral portion of the circular flat plate is inclined to form a pressing portion.

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