JP2007087831A - Waterproof structure of switch device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waterproof structure of a switch device capable of reducing an uncomfortable feeling in operation while securing a waterproof property and of further improving operability. <P>SOLUTION: Side surfaces 11b and 11c at rocking direction ends of an operation part 11 of a switch 10 are formed by circular arc surfaces along the same circle centering the rocking center P of the operation part 11, and the waterproof packing 20 mounted in a marginal part of a mounting opening part 2Ab of a housing 2 is brought into sliding contact with an outside surface 11e comprising the side surfaces 11b and 11c at the rocking direction ends of the operation part 11 and side surfaces 11d in a direction perpendicular to the rocking direction, whereby a waterproof effect is enhanced by bringing the waterproof packing 20 into contact with the side surfaces 11b and 11c at the rocking direction ends by generally constant close contact force regardless of the rocking angle of the operation part 11 and an operation surface of the operation part 11 can be kept exposed, so that the operability of the operation part 11 can be prevented from being degraded. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a waterproof structure for a switch device provided in an electrical apparatus.

  Conventionally, a table tap with a plurality of outlets is provided with a switch for switching on and off, and when the switch is turned off, electricity supplied from the power supply is blocked from being supplied to each outlet. Is known (see, for example, Patent Document 1).

By providing a switch on the table tap in this way, it is possible to manage the power supply to each outlet in a lump.For this reason, for example, when going out, the standby power consumption of the electrical equipment can be consumed without removing the plug from each outlet. There are various advantages such as prevention.
Japanese Utility Model Publication No. 61-126581 (first page, FIG. 1)

  Among such conventional table taps with a switch, there is one in which an operation portion of the switch is covered with a waterproof packing in order to ensure dustproof and waterproof properties at a portion where the switch is mounted.

  As described above, when the switch operation unit is covered with the waterproof packing, the waterproof packing is formed of a flexible material, and a gap is provided between the surface of the operation unit and the waterproof packing, and the switch is turned on and off. In general, it is possible to push the operation unit through the waterproof packing even if the protruding posture of the operation unit changes.

  However, in the case of such a structure, since there is a relatively large gap between the operation unit and the waterproof packing, when pushing the waterproof packing to operate or touching the waterproof packing regardless of the operation, There is a problem in that the so-called `` play '' occurs between hitting the waterproof packing and hitting the operation part, which makes the operation uncomfortable, makes the operation difficult, and decreases the on / off state discrimination. there were.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a waterproof structure for a switch device that can ensure waterproofness, reduce discomfort during operation, and improve the operability.

  According to the first aspect of the present invention, the housing includes an operating portion and a switch case that supports the central portion of the operating portion so as to be swingable, and is turned on / off in response to a swinging operation of the operating portion. A switch provided in a state where the operation portion is exposed to the surface side from the mounting opening formed on the surface, and a seal member that closes a gap between the mounting opening and the switch, and the swinging end of the operation portion The side surface of the portion is formed into a smooth curved surface, and each cross section perpendicular to the swing center of the side surface is formed into an arc having a constant radius centered on the swing center, and the seal member is mounted on the mounting opening. It is provided on at least one of the peripheral edge of the part and the switch case, and is slidably brought into contact with the side surface of the swing direction end of the operation part.

  According to a second aspect of the present invention, the seal member has a lip portion as a sliding contact portion with respect to a side surface of the swing direction end portion of the operation portion, and a base portion of the lip portion is disposed within the mounting opening portion. It is characterized by contacting the circumference.

  In the invention of claim 3, the seal member is an O-ring fitted in an annular groove formed in the switch case, and a portion protruding from the groove of the O-ring is defined as the operation portion. It is characterized by being brought into sliding contact with the side surface of the end portion in the swing direction.

  The invention according to claim 4 is characterized in that a groove portion for fitting the O-ring is formed by combining two divided bodies of the switch case in the groove width direction.

  In the invention of claim 5, the seal member has a peripheral portion sandwiched between the peripheral portion of the mounting opening and the switch case, and an inner peripheral portion of the operation member swinging direction. A waterproof packing having a lip portion that is in sliding contact with the side surface of the end portion, and a groove portion formed on the inner periphery of the switch case, and a portion protruding from the groove portion on the side surface of the swing direction end portion of the operation portion. And an O-ring in sliding contact.

  According to the first aspect of the present invention, when the seal member is brought into sliding contact with the outer side surface of the operation portion, the side surface of the end portion in the swing direction of the operation portion has a smooth curved surface and is perpendicular to the swing center of the side surface. Since each cross section is formed to be a circular arc with a constant radius centered on the swing center, the seal member is placed on the side surface of the swing direction end of the operation portion regardless of the swing angle of the operation portion. Therefore, the sealing member can ensure waterproofing between the operating portion and the mounting opening.

  At this time, the seal member only needs to be in sliding contact with the outer surface of the operation unit, and the operation surface of the operation unit can be exposed without covering the entire operation unit with the seal member. It is possible to prevent the operability of the operation portion from being impaired as in the conventional structure in which the portion is covered with waterproof packing.

  According to the invention of claim 2, when the base portion of the lip portion provided on the seal member is brought into contact with the inner periphery of the mounting opening portion, the lip portion is a side surface of the end portion in the swing direction of the operation portion. Since the support rigidity with respect to the reaction force received from can be increased, the waterproof effect can be further enhanced by bringing the tip end portion of the lip portion into contact with the operation portion with a greater intimate force.

  According to the invention of claim 3, since the seal member is an O-ring fitted into the groove formed in the switch case, the configuration of the seal member can be simplified and the O-ring is arranged on the inner peripheral side of the switch case. By fitting, the O-ring, that is, the seal member can be hidden in the switch case, so that the appearance of the switch portion can be prevented from being damaged by the seal member.

  According to the invention of claim 4, since the switch case can be separated by the groove portion into which the O-ring is fitted, the O-ring can be assembled more easily.

  According to invention of Claim 5, since a sealing member is comprised by the said waterproof packing and the said O-ring, it waterproofs between the side surface of an operation part and the peripheral part of the opening part for attachment by waterproof packing, and Since the O-ring can waterproof between the side surface of the operation unit and the switch case, the waterproof effect can be further improved by the double waterproof structure.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 to 5 show a first embodiment of a waterproof structure of a switch device according to the present invention, FIG. 1 is a perspective view of a table tap, FIG. 2 is an exploded perspective view of a table tap, FIG. 3 is an enlarged cross-sectional view taken along the line AA in FIG. 1, and FIG. 4 is an explanatory view showing the operation part of the switch in a plan view of (a), a front view of (b), and a side view of (c). FIG. 5 is an explanatory view showing the waterproof packing by a plan view of (a), a sectional view taken along line BB of (b), and a sectional view taken along line CC of (c).

  As shown in FIGS. 1 and 2, the waterproof structure of the switch device according to the present embodiment will be described by way of example when applied to a table tap 1 as an electric device. The upper part in the figure is the upper member and the upper position, the lower part in the figure is the lower member and the lower position, and the left and right direction left and right positions in the figure, but in particular the positional relationship between the upper and lower and the left and right It does not specify.

  As shown in FIG. 1, the table tap 1 includes a housing 2 formed into a hollow having a substantially rectangular cross section by an outer cover 2 </ b> A and an outer body 2 </ b> B, and a plug blade of an unillustrated plug on the upper surface 2 c of the housing 2. A plurality (two in the present embodiment) of insertion units 3 are provided at appropriate intervals in the length direction of the housing 2, and one plug blade insertion unit 3 is also provided on the distal end surface 2 d of the housing 2.

  Further, a switch 10 for on / off switching is provided on the base end side (the other side in FIG. 2) of the upper surface 2c of the housing 2, and electricity supplied from the power cord 4 by switching of the switch 10 is The plug blade insertion unit 3 is energized and cut off.

  Here, in this embodiment, the switch 10 is provided as a waterproof switch provided with a waterproof packing 20 as a seal member.

  As shown in FIG. 2, the detailed internal structure of the table tap 1 includes an intermediate body 5, a blade receiver 6, and a plug blade insert between an outer cover 2A and an outer body 2B which are divided into upper and lower parts. A waterproof bushing 7 is attached to a portion in which the unit 3 and the switch 10 are built and the power cord 4 is inserted into the housing 2.

  The outer cover 2A is formed in a substantially inverted U-shape with a shallow section with the lower part opened, and an opening 2Aa is formed on the upper surface 2c so that the plug blade insertion port 3a of the plug blade insertion unit 3 faces upward. At the same time, a mounting opening 2Ab is formed in which the switch 10 is fitted and attached. Further, a U-shaped notch 2Ac that faces the plug blade insertion port 3a of the plug blade insertion unit 3 is also formed on the distal end surface 2d of the outer cover 2A.

  The outer body 2B is formed in a shallow U-shaped shallow section with its upper part opened, and a screw mounting hole 2Ba is formed through which a plurality of assembly screws 8 (three in this embodiment) are inserted in the length direction. The outer cover 2A and the outer body 2B are coupled to each other through an assembly screw 8 inserted through the screw mounting hole 2Ba. Further, a cutout 2Bi that forms a rectangular opening together with the cutout 2Ac of the outer cover 2A is formed on the distal end surface 2d of the outer body 2B.

  Further, a plurality of ribs 2Bb cut out along the outer shape of the side wall 5a and the bottom surface 5b of the middle body 5 are provided on the inner side of the outer body 2B so as to project the middle body 5 stably by the ribs 2Bb. Fits and supports. A plurality of ribs for fitting and supporting the middle body 5 are also provided inside the outer cover 2A.

  Further, a notch 2Bc for taking in the power cord 4 (notch of the outer cover 2A is hidden) is formed between the outer end wall of the outer cover 2A and the outer body 2B, and the notch 2Bc The flange portion 7a of the waterproof bushing 7 through which the power cord 4 is inserted is fitted and locked.

  That is, the flange portion 7a is formed on the base portion (front side in FIG. 2) of the waterproof bushing 7 formed in a cylindrical shape, and the outer shape thereof is substantially rectangular, and the groove portion 7b formed on the outer periphery of the flange portion 7a. Is fitted into the peripheral edge of the notch 2Bc. At this time, the notch of the outer cover 2A and the notch 2Bc of the outer body 2B are combined to form a rectangular opening along the outer shape of the flange 7a.

  Further, ribs 2Bd for separating the two cords 4a and 4b of the power cord 4 project from the inside of the outer cover 2A and the base end side of the outer body 2B near the center of the notch 2Bc (the outer cover 2A It is the same).

  The middle body 5 is a case for holding the blade receiver 6 and is formed in a U-shaped cross section with its upper portion and front end (front side in the figure) released, and a plurality of inner bodies 5 for fitting and holding the blade receiver 6 therein. 5c, and an opening 5d through which the assembly screw 8 is inserted is formed at the center of the bottom surface 5b.

  The blade receiver 6 includes two conductive band plates 6a and 6b arranged in the width direction (left and right direction) of the housing 2, and plug blades of plugs are provided at intermediate portions of the conductive band plates 6a and 6b. Two blade receiving springs 6c sandwiched with elastic force are provided at predetermined intervals, and one similar blade receiving spring 6c is provided at each tip portion (front side in FIG. 2) of the conductive strips 6a and 6b. .

  And each blade receiving spring 6c is arrange | positioned at the plug blade insertion port 3a provided in the plug blade insertion unit 3 at two places, respectively. Each plug blade insertion unit 3 has a waterproof structure in which a waterproof door (not shown) can be freely opened and closed at each plug blade insertion port 3a.

  Further, the base end portions (the other side in FIG. 2) of the conductive strips 6 a and 6 b are connection end portions 6 d and 6 e connected to the switch 10.

  The switch 10 includes an operation unit 11 that is operated to swing, and a switch case 12 that supports the central part of the operation unit 11 so as to be swingable. The switch 10 is turned on and off by a swing operation of the operation unit 11. It constitutes a tumbler switch, and is mounted with the operation portion 11 facing outward from the mounting opening 2Ab of the housing 2.

  The switch 10 includes two input terminals (not shown) to which the two cords 4a and 4b of the power cord 4 are connected to the other side in FIG. 2, and two output terminals 13a and 13b protruding to the front side in FIG. And the operation unit 11 is turned on, that is, the side on which the projection 11a is provided is pushed downward as shown in FIG. 2 to energize the output terminals 13a and 13b with electricity supplied from the power cord 4. On the other hand, the operation unit 11 is turned off, that is, the side opposite to the side where the projection 11a is provided is pressed downward to cut off the electricity supplied from the power cord 4 so that the output terminals 13a and 13b are not energized. It has become.

  The output terminals 13a and 13b are connected to the corresponding connection ends 6d and 6e of the blade receiver 6, respectively. When the switch 10 is turned on, each plug blade insertion unit 3 is energized, while the switch 10 is turned off. Each plug blade insertion unit 3 is in a non-energized state.

  As shown in FIG. 2, the assembly of the table tap 1 configured in this way is to set the middle body 5 holding the blade receiver 6 to the outer body 2B, set the switch 10 and then set the blade receiver 6 The blade insertion units 3 corresponding to the respective blade receiving springs 6c are disposed, while the waterproof packing 20 is temporarily fixed inside the peripheral edge of the mounting opening 2Ab of the outer cover 2A, and the outer cover 2A is attached to the outer cover 2A. Covering from above, the outer body 2 </ b> B and the outer cover 2 </ b> A are coupled by the assembly screw 8.

  Then, as shown in FIG. 3, the switch 10 is fixed in a state of being sandwiched between the outer cover 2 </ b> A and the outer body 2 </ b> B, and the peripheral portion 20 a of the waterproof packing 20 is attached to the upper end of the switch case 12. It is sandwiched and fixed between the inner periphery of the opening 2Ab in a crimped state.

  Of course, the power cord 4 is set between the proximal ends of the outer cover 2A and the outer body 2B together with the waterproof bushing 7 inserted through the power cord 4 while being connected to the switch 10.

  Here, in the present embodiment, as shown in FIGS. 3 and 4B, the side surfaces 11b and 11c at the end of the operating portion 11 in the swing direction are smooth curved surfaces, and the side surfaces 11b and 11c are swung. Each cross section perpendicular to the center is formed to be a circular arc with a constant radius centered on the oscillation center P.

  Further, the side surface 11d in the direction perpendicular to the swing of the operation unit 11 is substantially perpendicular to the upper surface 2c of the outer cover 2A. An outer surface 11e of the operation unit 11 is formed by the side surfaces 11b and 11c at the direction end portions.

  And the waterproof packing 20 provided in the peripheral part of opening part 2Ab for attachment is made to slidably contact the outer surface 11e of the operation part 11. FIG.

  That is, in the waterproof packing, as shown in FIG. 5, the peripheral edge 20a has a rectangular shape along the opening shape of the mounting opening 2Ab, and the peripheral edge 20a of the waterproof packing 20 and the peripheral edge of the mounting opening 2Ab An annular concavo-convex portion 30 that is closely fitted to each other is formed between the inner portion and the peripheral portion 20a is sandwiched between the inner peripheral portion of the mounting opening 2Ab and the upper end of the switch case 12. The annular concavo-convex portions 30 are fitted to each other so that the space between the waterproof packing 20 and the housing 2 is liquid-tightly sealed.

  Further, the central portion of the waterproof packing 20 has a lip portion 21 raised so as to surround the operation portion 11 substantially along the peripheral shape (substantially rectangular shape in the present embodiment) of the outer surface 11e of the operation portion 11. The lip portion 21 is formed by a base portion 21a raised substantially vertically from the peripheral edge portion 20a of the waterproof packing 20, and a tip portion 21b bent from the tip portion of the base portion 21a and protruding in an acute angle shape.

  At this time, the inner periphery of the distal end portion 21b has a substantially similar shape slightly smaller than the cross-sectional shape of the outer side surface 11e composed of the side surfaces 11b and 11c at the swinging direction end portion of the operation unit 11 and the side surface 11d in the swinging perpendicular direction. The tip 21b of the lip 21 is slidably contacted with the outer surface 11e with a predetermined pressing force.

  Further, in the present embodiment, as shown in FIG. 3, the base 21a of the lip portion 21 is contacted with the inner periphery of the mounting opening 2Ab, particularly the outer end (upper end in the figure) of the mounting opening 2Ab. Touched.

  According to the present embodiment described above, the side surfaces 11b and 11c of the end portion in the swing direction of the operation unit 11 are smooth curved surfaces, and each cross section perpendicular to the swing center P of the side surfaces 11b and 11c The waterproof packing 20 formed so as to be an arc having a constant radius centered on the center P and provided at the peripheral edge of the mounting opening 2Ab of the housing 2 is connected to the side surfaces 11b and 11c at the swing direction end and the swinging right angle. The waterproof packing 20 is substantially constant with respect to the outer surface 11e at the end of the swinging direction regardless of the swing angle of the operation unit 11 because it is slidably contacted with the outer surface 11e of the operation unit 11 including the side surface 11d. It is possible to make contact with close force, and therefore the waterproof packing 20 can ensure waterproofing between the operation portion 11 and the mounting opening 2Ab.

  At this time, the waterproof packing 20 may be in sliding contact with the outer side surface 11e of the operation unit 11, and the operation surface (upper surface in the drawing) of the operation unit 11 is not covered with the waterproof packing 20 entirely. Since it can be exposed, it can prevent that the operativity of the operation part 11 is impaired.

  In this embodiment, in addition to the above-described effects, the waterproof packing 20 has a lip portion 21 at the sliding contact portion with the outer surface 11e of the operation portion 11, and the base portion 21a of the lip portion 21 is used for attachment. Since the lip portion 21 is in contact with the inner periphery of the opening 2Ab, the support rigidity against the reaction force that the lip portion 21 receives from the outer side surface 11e of the operation portion 11 can be increased. The waterproof effect can be further enhanced by contacting the operation unit 11 with a greater close force.

  (Second Embodiment) FIG. 6 shows a second embodiment of the present invention, in which the same components as those in the first embodiment are denoted by the same reference numerals and redundant description is omitted. FIG. It is the expanded sectional view cut in the part corresponding to the middle AA line.

  The waterproof structure of the switch device according to the present embodiment basically has the same configuration as that of the first embodiment, and the side surfaces 11b and 11c of the swing direction end portion of the operation unit 11 are the operation unit 11. The side surfaces 11b and 11c at the end of the rocking direction are smooth curved surfaces, and each cross section perpendicular to the rocking center of the side surfaces 11b and 11c is an arc with a constant radius centered on the rocking center P. Is formed.

  However, in this embodiment, the seal member is an O-ring 31, and the O-ring 31 is fitted into a groove 12 a formed on the inner periphery of the switch case 12, and a portion protruding from the groove 12 a is an outer surface of the operation unit 11. 11e is slidably contacted.

  Of course, the O-ring 31 is formed in an annular shape and a circular cross section by an elastic member such as rubber, and the outer side surface 11e is composed of side surfaces 11b and 11c at the swing direction end of the operation unit 11 and a side surface 11d in the swinging right angle direction. It is installed in a substantially rectangular shape along the cross-sectional shape.

  Therefore, also in the present embodiment, as in the first embodiment, the side surfaces 11b and 11c at the end of the operating portion 11 in the swing direction are smooth curved surfaces, and the swing center P of the side surfaces 11b and 11c. Each of the cross sections perpendicular to each other is formed into a circular arc having a constant radius centered on the swing center P, and the O-ring 31 includes side surfaces 11b and 11c at the swing direction end portions and a side surface 11d in the swing perpendicular direction. The O-ring 31 is brought into contact with the outer surface 11e of the end portion in the swinging direction with a substantially constant close contact force regardless of the swing angle of the operation portion 11. Therefore, the O-ring 31 can ensure waterproofing between the operation portion 11 and the mounting opening 2Ab.

  In this embodiment, the seal member is the O-ring 31 that is fitted in the groove 12 a formed in the switch case 12, so that the configuration of the seal member can be simplified, and the O-ring 31 is included in the switch case 12. Since the O-ring 31, that is, the seal member can be concealed in the switch case 12 by being fitted to the peripheral side, it is possible to prevent the aesthetic appearance of the switch portion from being impaired by providing the seal member.

  Of course, the outer side surface 11e of the operation part 11 can be slidably contacted with the O-ring 31 over the entire circumference thereof to ensure waterproofness.

  (Third Embodiment) FIG. 7 shows a third embodiment of the present invention, in which the same components as in the second embodiment are denoted by the same reference numerals and redundant description is omitted, and FIG. It is the expanded sectional view cut in the part corresponding to the middle AA line.

  The waterproof structure of the switch device of the present embodiment basically has the same configuration as that of the second embodiment, and the seal member is an O-ring 31, and the O-ring 31 is provided on the inner periphery of the switch case 12. It fits into the formed groove 12a.

  However, in this embodiment, the groove portion 12a into which the O-ring 31 is fitted can be separated in the groove width direction (vertical direction in the drawing).

  That is, in this embodiment, the switch case 12 is divided vertically from the formation part of the groove 12a, the lower part of the two divided bodies is the case body 12A, the upper part is the ring cap 12B, and the ring cap 12B is the case body 12A. The outer periphery is fitted and fixed by caulking or screwing.

  A groove 12a is formed between the L-shaped notch 12Ba formed at the lower inner periphery of the ring cap 12B and the upper end of the case body 12A, and the O-ring 31 is fitted into the notch 12Ba. In this state, the ring cap 12B can be incorporated into the case main body 12A.

  Therefore, according to the present embodiment, the switch case 12 can be separated by the groove 12a in which the O-ring 31 is fitted, as well as the same effect as the second embodiment. The O-ring 31 can be assembled more easily.

  (Fourth Embodiment) FIG. 8 shows a fourth embodiment of the present invention, in which the same components as those in the first and second embodiments are denoted by the same reference numerals and redundant description is omitted. FIG. 2 is an enlarged cross-sectional view taken along the line AA in FIG. 1.

  In the present embodiment, as in the first embodiment, the side surfaces 11b and 11c of the end portion in the swing direction of the operation unit 11 are smooth curved surfaces, and each cross section perpendicular to the swing center of the side surfaces 11b and 11c is formed. The circular arc is formed with a constant radius centered on the oscillation center P (see FIG. 4B).

  However, in this embodiment, the sealing member is constituted by the waterproof packing 20 shown in the first embodiment and the O-ring 31 shown in the second embodiment.

  That is, the waterproof packing 20 sandwiches the peripheral edge portion 20 a between the peripheral edge portion of the mounting opening 2 </ b> Ab of the housing 2 and the switch case 12, and the lip portion 21 formed on the inner peripheral portion of the outer peripheral surface of the operation portion 11. The O-ring 31 is fitted in a groove 12a formed on the inner periphery of the switch case 12, and a portion protruding from the groove 12a is in sliding contact with the outer surface 11e of the operation unit 11. .

  Even in this case, the lip portion 21 makes the base portion 21a abut against the inner periphery of the mounting opening 2Ab, and the reaction force rigidity of the tip portion 21b slidably contacting the outer surface 11e of the operation portion 11 is increased. It is desirable to increase.

  Therefore, according to the present embodiment, since the sealing member is constituted by the waterproof packing 20 and the O-ring 31, the waterproof packing 20 provides a space between the outer surface 11e of the operation portion 11 and the peripheral edge portion of the mounting opening 2Ab. Since it is waterproof and the space between the outer surface 11e of the operation unit 11 and the switch case 12 can be waterproofed by the O-ring 31, the waterproof effect can be further improved by the double waterproof structure.

  By the way, although this invention was demonstrated taking the example in 1st-4th embodiment, various other embodiment can be employ | adopted in the range which is not restricted to these embodiments and does not deviate from the summary of this invention.

The perspective view of the table tap to which the waterproof structure of the switch apparatus in 1st Embodiment of this invention is applied. The disassembled perspective view of the table tap in 1st Embodiment of this invention. The expanded sectional view along the AA line in FIG. Explanatory drawing which shows the operation part of the switch in 1st Embodiment of this invention with the top view of (a), the front view of (b), and the side view of (c). Explanatory drawing which shows the waterproof packing in 1st Embodiment of this invention with the top view of (a), the BB sectional drawing of (b), and CC sectional drawing of (c). The expanded sectional view cut in the section corresponding to the AA line in Drawing 1 in a 2nd embodiment of the present invention. The expanded sectional view cut in the section corresponding to the AA line in Drawing 1 in a 3rd embodiment of the present invention. The expanded sectional view cut in the section corresponding to the AA line in Drawing 1 in a 4th embodiment of the present invention.

Explanation of symbols

2 Housing 2Ab Mounting opening 10 Switch 11 Operation portion 11b, 11c Side surface of swing direction end 11d Side surface of swinging direction 11e Outer side surface 12 Switch case 12a Groove portion 20 Waterproof packing 20a Peripheral portion of waterproof packing 21 Lip portion 21a Base part of lip part 21b Tip part of lip part 31 O-ring

Claims (5)

It has an operating part and a switch case that supports the central part of the operating part so as to be swingable, and is turned on / off according to the swinging operation of the operating part, and from the mounting opening formed in the housing to the operating part A switch provided with exposed on the surface side,
A sealing member for closing a gap between the mounting opening and the switch;
With
The side surface of the operating portion in the swing direction is a smooth curved surface, and each cross section perpendicular to the swing center of the side surface is formed into an arc having a constant radius centered on the swing center,
A switch device characterized in that the seal member is provided on at least one of a peripheral edge of the mounting opening and the switch case, and is slidably brought into contact with a side surface of a swinging direction end of the operation unit. Waterproof structure. The seal member has a lip portion as a sliding contact portion with respect to a side surface of the swing direction end portion of the operation portion,
The waterproof structure for a switch device according to claim 1, wherein a base portion of the lip portion is brought into contact with an inner periphery of the mounting opening. The seal member is an O-ring fitted in an annular groove formed in the switch case;
3. The waterproof structure for a switch device according to claim 1, wherein a portion of the O-ring that protrudes from the groove is slidably contacted with a side surface of a swing direction end of the operation portion.   The waterproof structure for a switch device according to claim 3, wherein a groove portion for fitting the O-ring is formed by combining two divided bodies of the switch case in the groove width direction. As the sealing member,
A waterproof packing having a peripheral portion sandwiched between the peripheral portion of the mounting opening and the switch case, and an inner peripheral portion thereof forming a lip portion slidably contacting the side surface of the swinging end portion of the operation portion; ,
An O-ring that is fitted in a groove formed on the inner periphery of the switch case, and a portion protruding from the groove is slidably in contact with the side surface of the swing direction end of the operation unit;
The waterproof structure of the switch device according to claim 1, comprising:

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