JP4106247B2 - Waterproof structure of on / off switch - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a waterproof structure for a vehicle open / close switch.
[0002]
[Prior art]
In general, the open / close switch is used as a door knob of an open / close door such as a back door or a trunk of a vehicle. As shown in FIGS. 9 and 10, the open / close switches 80 and 90 include case bodies 81 and 91, and micro switches 83 and 93 in the case bodies 81 and 91. The lead wires 82 and 92 drawn from the micro switches 83 and 93 are drawn to the outside of the case bodies 81 and 91 and are electrically connected to electronic functional parts 84 and 94 such as connectors. When the open / close switches 80 and 90 are provided outside the vehicle, a waterproof structure for the open / close switches 80 and 90 is formed to prevent water from entering from the outside. 9 and 10 show a waterproof structure in the case where the open / close switches 80 and 90 are attached as back door switches of a vehicle.
[0003]
FIG. 9 shows a waterproof structure of the open / close switch 80 attached to the back door panel 85 of the vehicle. A back door garnish 88 is attached to the back door panel 85. In the vicinity of the back door garnish 88 of the back door panel 85, an attachment hole 86 to which the open / close switch 80 is attached is formed. The open / close switch 80 is fitted and fixed in the mounting hole 86 of the back door panel 85. In this case, the edge of the mounting hole 86 of the back door panel 85 is filled with a waterproof seal material 87 so as to surround the outer edge of the open / close switch 80.
[0004]
FIG. 10 shows a waterproof structure of the open / close switch 90 attached to the back door garnish 95 of the vehicle. The back door garnish 95 has an attachment hole 98 to which the open / close switch 90 is attached. The opening / closing switch 90 is fitted and fixed in the mounting hole 98 of the back door garnish 95. The back door garnish 95 is attached to the back door panel 96 with the open / close switch 90 fixed. In this case, the edge of the back door garnish 95 is filled with a waterproof sealing material 97 so as to surround the outer edge of the open / close switch 90. As described above, the waterproof structure of the open / close switches 80 and 90 is formed by using the waterproof seal materials 87 and 97.
[0005]
[Problems to be solved by the invention]
However, in the waterproof structure of the open / close switches 80 and 90 using the sealing materials 87 and 97 for waterproofing, it is necessary to fill the sealing materials 87 and 97 into predetermined positions in the back door panel 85, the back door garnish 95, and the like. To do. For this reason, the man-hour required for the filling operation | work of the sealing materials 87 and 97 has arisen. In addition, the use of waterproof sealing materials 87 and 97 increases the material cost for forming the waterproof structure of the open / close switches 80 and 90. For these reasons, the waterproof structure of the open / close switches 80 and 90 using the waterproof sealing materials 87 and 97 has a problem that the manufacturing cost increases.
[0006]
This invention is made | formed in view of said subject, The objective is to provide the open / close switch which can reduce the manufacturing cost of a waterproof structure.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is a waterproof structure of an on / off switch provided with a switch in a case body, and in the case body, a switch housing chamber in which the switch is housed, A lead wire accommodating chamber through which a lead wire is routed is defined, and a first lead wire insertion hole that communicates the switch accommodating chamber and the lead wire accommodating chamber, and the outside communicates with the lead wire accommodating chamber. A second lead wire insertion hole, wherein the first lead wire insertion hole is disposed above the second lead wire insertion hole , and the case body covers the body and the body. The lead wire storage chamber, the first lead wire insertion hole, and the second lead wire insertion hole are provided so as to extend vertically in the body. In the lead wire receiving groove That it is formed by the serial cover is arranged as its gist.
[0008]
In this way, there is a height difference between the first lead wire insertion hole and the second lead wire insertion hole. Due to this height difference, water that has entered from the outside is difficult to reach the first lead wire insertion hole. For this reason, it is possible to prevent water from getting over the first lead wire insertion hole and entering the inside of the switch housing chamber. Therefore, the waterproofness of the open / close switch can be maintained well. Further, according to this configuration, the waterproof structure of the open / close switch is formed without using a waterproof sealing material or the like. Therefore, since the material cost is reduced, the manufacturing cost of the waterproof structure of the open / close switch can be reduced.
[0010]
Further, in this way, the lead wire accommodating chamber, the first lead wire insertion hole, and the second lead wire insertion hole are formed at the same time when the cover is attached to the body. Therefore, the waterproof structure of the open / close switch can be efficiently formed. Therefore, since the working efficiency is improved, the manufacturing cost of the waterproof structure of the open / close switch can be further reduced.
[0011]
The gist of the invention according to claim 2 is that, in the invention according to claim 1 , the second lead wire insertion hole is arranged at the bottom of the lead wire receiving groove.
[0012]
In this way, even if water is immersed in the lead wire accommodating chamber from the outside, the water is quickly discharged to the outside of the lead wire accommodating chamber through the second lead wire insertion hole. Therefore, drainage of the lead wire storage chamber is improved. Therefore, the waterproofness of the open / close switch can be kept even better.
[0013]
The gist of the invention described in claim 3 is that, in the invention described in claim 1 or 2 , a lead wire guide groove for guiding the lead wire in a predetermined direction is formed on the outer edge of the cover. And
[0014]
In this way, the lead wire is guided in a predetermined direction by the lead wire guide groove. For this reason, the lead wire can be disposed at a predetermined position without applying a load to the lead wire drawn out of the lead wire storage chamber.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a back door switch 10 embodying the present invention will be described with reference to FIGS.
[0016]
As shown in FIG. 1, the back door switch 10 is attached to a back door garnish 12 fixed to a back door panel 11 at the rear of the vehicle.
As shown in FIG. 2, the back door garnish 12 has a mounting hole 13 into which the case main body 14 of the back door switch 10 is fitted. The back door switch 10 includes a substantially rectangular parallelepiped case body 14 and a micro switch 15 that electrically unlocks the back door of the vehicle in the case body 14. The switch knob 16 of the back door switch 10 is directed obliquely downward so that the operator can easily operate it.
[0017]
As shown in FIG. 3, the case body 14 of the back door switch 10 includes a body 17 and a cover 18 that is mounted so as to cover the body 17 from above. Two engaging claws 19 project from the outer edge of the body 17, and an engagement hole 20 that engages with the engaging claws 19 is formed through the side wall of the cover 18. The cover 18 is fixed to the upper portion of the body 17 by engaging the engagement claw 19 of the body 17 with the engagement hole 20.
[0018]
Two locking claws 21 protrude from both ends of the switch knob 16, and locking portions 22 that lock the locking claws 21 are provided on the inner wall of the body 17. The switch knob 16 is slidably held at the lower portion of the body 17 when the locking claw 21 of the body 17 is locked to the locking portion 22.
[0019]
A holding projection 25 for holding the coil spring 24 is erected at the center of the switch knob 16 so as to extend upward. A coil spring accommodating portion 26 is provided at a position corresponding to the holding projection 25 of the body 17. Is provided. By attaching the cover 18 to the body 17, the switch knob 16 is always urged downward by the urging force of the coil spring 24 held by the holding protrusion 25.
[0020]
Grommets 23 as standing members for fixing the back door switch 10 to the back door garnish 12 are provided upright at both ends of the body 17. The grommet 23 is a substantially square cylindrical body having a screw hole 27 at the center, and is integrally molded with the body 17 by resin.
[0021]
The back door garnish 12 has an attachment hole 13 into which the case main body 14 of the back door switch 10 is fitted, and a fixing hole 28 through which the grommet 23 is inserted. Since the grommet 23 opens outward when the fixing screw 29 is inserted into the central screw hole 27, the grommet 23 is pressed against the inner peripheral surface of the fixing hole 28 formed in the back door garnish 12. In this manner, the back door switch 10 is fixed to the mounting hole 13 of the back door garnish 12 by fixing the grommet 23 with screws.
[0022]
In the case body 14, a switch housing chamber 31 in which the microswitch 15 is housed and a lead wire housing chamber 33 in which the lead wire 32 of the microswitch 15 is routed are defined. The actuator 15 a of the micro switch 15 is disposed so as to contact a part of the switch knob 16. The micro switch 15 can be switched between an off state and an on state by operating the tip of the actuator 15a by pushing the switch knob 16.
[0023]
In the case main body 14, an upper opening 34 serving as a first lead wire insertion hole that communicates the switch accommodating chamber 31 and the lead wire accommodating chamber 33, and a second lead that communicates the lead wire accommodating chamber 33 and the outside. And a lower opening 35 as a lead wire insertion hole. In this case, there is a height difference between the upper opening 34 and the lower opening 35 in the lead wire accommodating chamber 33.
[0024]
As shown in FIGS. 4 to 8, a lead wire receiving groove 36 is formed in the body 17 so as to extend in the vertical direction. A first notch 40 is formed at the upper end of the lead wire receiving groove 36. A lead wire guide groove 37 for guiding the lead wire 32 of the micro switch 15 in a predetermined direction is formed on the outer edge of the cover 18. A second notch 41 is formed at the lower end of the lead wire guide groove 37. Further, two holding pieces 43 project from the opening edge of the lead wire guide groove 37 provided on the outer edge of the cover 18 so as to press and hold the lead wire 32 inside the lead wire guide groove 37. .
[0025]
When the body 17 and the cover 18 are mounted to face each other, a lead wire receiving groove 36 is formed as a lead wire receiving chamber 33 in the case body 14. Further, by attaching the body 17 and the cover 18, a first notch 40 is formed as an upper opening 34 at the upper end of the lead wire accommodating chamber 33, and at the lower end of the lead wire accommodating chamber 33, A second notch 41 is formed as the lower opening 35. At this time, the lead wire guide groove 37 provided in the cover 18 is disposed inside the lead wire housing chamber 33, and the lower opening 35 is the bottom of the lead wire housing groove 36 that forms the lead wire housing chamber 33. Placed in.
[0026]
According to this embodiment, the following effects can be obtained.
(1) The lead wire accommodating chamber 33 through which the lead wire 32 is routed communicates the upper opening 34 that communicates the switch accommodating chamber 31 and the lead wire accommodating chamber 33 with the lead wire accommodating chamber 33 and the outside. A lower opening 35 is formed. In this case, there is a height difference between the upper opening 34 and the lower opening 35. Due to this height difference, it is possible to prevent water from the outside from getting over the upper opening 34 and entering the inside of the switch housing chamber 31 in which the microswitch 15 is housed. Therefore, the waterproof property of the back door switch 10 can be maintained satisfactorily. In addition, according to this configuration, the waterproof structure of the back door switch 10 is formed without using a waterproof sealant or the like. Therefore, since the material cost is reduced, the manufacturing cost of the waterproof structure of the back door switch 10 can be reduced.
[0027]
(2) The lead wire accommodating chamber 33, the upper opening 34, and the lower opening 35 are formed by disposing the cover 18 in the lead wire accommodating groove 36 provided in the body 17. In this way, the waterproof structure of the back door switch 10 is formed at the same time when the cover 18 is attached to the body 17. Therefore, the waterproof structure of the back door switch 10 can be formed efficiently. Therefore, since the working efficiency is improved, the manufacturing cost of the waterproof structure of the back door switch 10 can be further reduced.
[0028]
(3) The lower opening 35 that communicates the lead wire housing chamber 33 with the outside is disposed at the bottom of the lead wire housing groove 36 that forms the lead wire housing chamber 33. For this reason, even if water is immersed in the lead wire accommodating chamber 33 from the outside, the water is quickly discharged to the outside of the lead wire accommodating chamber 33 through the lower opening 35. Therefore, drainage in the lead wire storage chamber 33 is improved. Therefore, the waterproofness of the back door switch 10 can be kept even better.
[0029]
(4) A lead wire guide groove 37 for guiding the lead wire 32 of the micro switch 15 in a predetermined direction is formed on the outer edge of the cover 18. For this reason, when connecting the lead wire 32 to an electronic functional component such as a connector, the load applied to the lead wire 32 drawn out of the lead wire housing chamber 33 can be reduced.
[0030]
(5) Two holding pieces 43 project from the opening edge of the lead wire guide groove 37 so as to press and hold the lead wire 32 inside the lead wire guide groove 37. In this case, the two holding pieces 43 prevent the lead wire 32 from being detached from the lead wire guide groove 37. For this reason, the lead wire 32 can be reliably assembled in the lead wire guide groove 37.
[0031]
(6) The lead wire guide groove 37 is disposed inside the lead wire housing chamber 33. For this reason, the lead wire 32 of the microswitch 15 can be routed in a compact manner in the accommodating space in the case body 14.
[0032]
In addition, you may change this embodiment as follows.
In the present embodiment, the open / close switch is applied to the back door switch 10 attached to the back door garnish 12 outside the passenger compartment. However, the open / close switch may be applied to a switch provided in the vehicle interior.
[0033]
In the present embodiment, the open / close switch is applied to the back door switch 10 of a vehicle or the like. However, the opening / closing switch is not limited to this, and may be applied to all opening / closing parts such as a trunk of a vehicle or a door of a house.
[0034]
-In this embodiment, the waterproof structure provided with the microswitch 15 in the case main body 14 was applied to the opening / closing switch of the opening / closing part. However, the waterproof structure may be applied to a switch other than the open / close switch. For example, the waterproof structure may be applied to a switch of a vehicle illumination or other equipment.
[0035]
Next, the technical idea grasped by the above embodiment and another example will be described below.
(1) In the waterproof structure of the opening and closing switch, the lead wire guide groove, and this being arranged on the inner side of the lead wire receiving portion. If it does in this way, it will become possible to draw a lead wire compactly in the accommodation space in a case main part.
[0036]
(2) In the waterproof structure of the on-off switch, the opening edge of the lead wire guide groove, and this the retention members hold the hold-down of the lead wire to the lead wire guide groove is provided. In this way, the lead wire can be reliably assembled to the lead wire guide groove.
[0037]
【The invention's effect】
As described above in detail, according to the present invention, the manufacturing cost of the waterproof structure of the open / close switch can be reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a mounting position of a back door switch in the present embodiment.
FIG. 2 is a cross-sectional view showing a mounting position of a back door switch in the present embodiment.
FIG. 3 is a cross-sectional view of the back door switch.
FIG. 4 is an enlarged perspective view of the vicinity of the lead wire accommodating chamber.
FIG. 5 is an enlarged perspective view of the vicinity of the lead wire accommodating chamber.
FIG. 6 is an exploded perspective view of a case main body.
FIG. 7 is an enlarged cross-sectional view of the vicinity of the lead wire accommodating chamber.
FIG. 8 is an enlarged side view of the vicinity of the lead wire accommodating chamber.
FIG. 9 is a cross-sectional view showing a waterproof structure of a conventional back door switch.
FIG. 10 is a sectional view showing a waterproof structure of a conventional back door switch.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Back door switch (open / close switch), 14 ... Case main body, 15 ... Micro switch (switch), 17 ... Body, 18 ... Cover, 31 ... Switch accommodation chamber, 32 ... Lead wire, 33 ... Lead wire accommodating chamber, 34 ... Upper opening (first lead wire insertion hole), 35 ... Lower opening (second lead wire insertion hole), 36 ... Lead wire receiving groove, 37 ... Lead wire guiding groove.

Claims (3)

In the waterproof structure of the open / close switch with a switch in the case body,
In the case body, a switch housing chamber in which the switch is housed and a lead wire housing chamber in which a lead wire is routed are defined and formed.
A first lead wire insertion hole that communicates the switch accommodation chamber and the lead wire accommodation chamber; and a second lead wire insertion hole that communicates the outside and the lead wire accommodation chamber;
The first lead wire insertion hole is disposed above the second lead wire insertion hole ,
The case main body includes a body and a cover that is mounted so as to cover the body. The lead wire storage chamber, the first lead wire insertion hole, and the second lead wire insertion hole are , waterproof structure for opening and closing the switch, characterized in that the cover in the lead wire receiving groove disposed so as to extend in the vertical direction in the body is formed by being arranged.   The waterproof structure of the on-off switch according to claim 1, wherein the second lead wire insertion hole is disposed at a bottom portion of the lead wire receiving groove.   The waterproof structure for an on-off switch according to claim 1 or 2, wherein a lead wire guide groove for guiding the lead wire in a predetermined direction is formed on an outer edge of the cover.

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