JPH0732828U - Switch device - Google Patents

Abstract

(57) [Abstract] [Purpose] A switch device used to detect the shift operation state of a transmission, the operation state of a foot brake, and the like in a vehicle, so that the detection stroke can be easily changed. A switch S is provided when an operating member A provided in the casing 1 is displaced beyond a predetermined stroke.
In the switch device adapted to perform the switching operation, the collar 23 for adjusting the detected stroke amount is detachably fitted to the rod portion 8 ₃ of the operating member A.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention variably adjusts the detection stroke of a switch device used for detecting the shift operation state of a transmission, the operation state of a brake, etc. in a vehicle to enhance its versatility. It concerns a new switch device.

[0002]

[Prior art]

 A switch device used for detecting a brake, a back gear, etc. of a conventional vehicle is disclosed in, for example, Japanese Utility Model Publication No. 4-22492.

[0003]

[Problems to be solved by the device]

 By the way, in this type of switch device, for example, when the shift state of the transmission is detected and when the operating state of the brake is detected, the amount of displacement of the detected part is different, so the detection stroke is changed depending on the place of use. This is necessary, and conventionally, a plurality of switch devices have been prepared to cope with different displacement amounts of the detected part to deal with them, which causes a problem of high cost.

The present invention has been made in view of the above situation, and the detection stroke can be easily changed and adjusted, and the versatility is increased to cope with the detected portions having different displacement amounts, and the above problems are solved. The purpose of the present invention is to provide a new switch device that is made possible.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, according to the invention of claim 1, a switch chamber having a switch composed of a fixed contact point and a movable contact point is formed in the casing and is inserted into the switch chamber from the outside. In a switch device in which an operating member is provided so as to be able to move forward and backward, and the operating member is displaced beyond a predetermined stroke to perform switching operation of the switch, an adjustment for variably adjusting the stroke of the operating member. The feature is that the members are detachably attached.

In order to achieve the above object, according to the invention of claim 2, in the device of claim 1, the actuating member includes a switch operating portion facing a movable contact of the switch. A rod portion extending from the switch operating portion along the displacement direction of the operating member is provided, and the adjusting member interposed between the switch operating portion and the movable contact is detachably fitted to the rod portion. Is characterized by.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a vertical sectional side view of the switch device of the present invention, FIG. 2 is an exploded perspective view thereof, and FIG. 3 is a perspective view of an operating member and an adjusting member.

In the casing 1 of the switch device of the present invention, the front half of a bottomed cylindrical base member 3 made of an insulating hard synthetic resin material is inserted and fitted into a large-diameter base portion of a metal case body 2. , A switch chamber C surrounded by the inner peripheral surface of the base member 3 is defined inside the casing 1, and the switch chamber C is surrounded by the switch chamber C. A switch S described later is incorporated in the.

The case body 2 has a large-diameter base portion 2 ₁ having an outer peripheral surface formed in a polygonal shape, and the base portion 2 integrally projecting forward from a central portion and engraved with a male screw on the outer peripheral portion. ₁ more is constituted with front portion 2 ₂ of smaller diameter than, its previously part 2 ₂ front guide hole 4 is bored, the inner end of the front guide hole 4 is opened in the switch chamber C, also its outer end is communicated with the opening portion 5 of the tip of the front portion 2 _2. The front rod portion 6 ₁ of the guide in the hole 4 of synthetic resin Pusshuro head 6 is slidably inserted. The rear end of the push rod 6 projects into the switch chamber C, and the front end of the push rod 6 faces the opening 5. Wherein the opening 5, steel balls 7 are supported so as to be retractable, front rod portion 6 ₁ tip of the the inner surface of this steel balls 7 push rod 6 has been engaged, the push rod 6 The forward slide causes the steel ball 7 to be pushed and protrude from the opening 5, and when the steel ball 7 is pushed inward, the push rod 6 slides backward.

A push disk 8 made of synthetic resin is housed in the switch chamber C so as to be movable in the axial direction. The push disk 8 and the disk portion ₈₁ as clearly shown in FIG. 3, a stepped shaft portion ₈₂ of the back surface of the disc portion _81, rearwardly from the axis direction within the stepped shaft section 8 ₂ The rear rod portion 8 ₃ is formed integrally with the rear rod portion 8 _3, and a switch operating portion 8 ₄ for turning off a switch S described later is formed at the base portion of the rear rod portion 8 ₃ . The rib spring seat surface 9 of the coil spring 15 to be described later on a rear surface of the disc portion ₈₁ is formed, which is projected from the plurality of discharge morphism shaped further outer periphery of the large diameter portion of the stepped shaft section 8 ₂ The spring guide 10 of the coil spring 15 is integrally formed. The outer peripheral portion of the disk portion 8 ₁ is movably fitted to the inner peripheral surface of the base member 3, and the rear rod portion 8 ₃ is a bottomed rear portion formed in the rear end wall 3 ₁ of the base member 3. It is slidably fitted in the guide hole 11. A bottomed fitting hole 12 having a small diameter portion 12 ₁ and a large diameter portion 12 ₂ is formed at the center of the disc portion 8 ₁ of the push disc 8 and opens forward. The rear end of the push rod 6 is closely fitted into the small diameter portion 12 ₁ of the fitting hole 12. The push disk 8 and the push rod 6 are integrally movable in the axial direction, and the push disk 8 and the push rod 6 are moved integrally with each other and are displaced beyond a predetermined stroke amount to operate the switch S described later. It constitutes A.

In the switch chamber C, between the inner end wall of the base portion 2 ₁ of the case main body 2 and the disk portion 8 ₁ of the push disk 8, the switch chamber C is liquid-tightly sealed from the outside in a plate-like seal. A member 13 is provided. The sealing member 13 is a soft synthetic resin material, is formed by a flexible material such as rubber, cylindrical clamped portion 13 ₁ is formed integrally with the central portion, also of which, each of the outer peripheral portion The thick bead-shaped enlarged portions 13 ₂ and 13 ₃ are integrally formed. The inner end portion of the push rod 6 is penetrated through the tubular clamped portion 13 ₁ of the seal member 13, and the clamped portion 13 ₁ is the same as the large diameter portion 12 ₂ of the fitting hole 12 described above. It is tightly clamped with an appropriate tightening margin by an annular seal clamping portion 14 formed between the inner peripheral surface and the outer peripheral surface of the push rod 6. Further, the outer peripheral portion of the seal member 13 is tightly clamped and fixed between the inner end wall of the base portion 2 ₁ of the case body 2 and the inner end edge of the base member 3.

A compression coil spring 15 is provided between the spring bearing 24 formed on the inner peripheral surface of the base member 3 of the casing _{1 and} the spring seat surface 9 formed on the back surface of the disk portion 8 _1. The coil spring 15 is engaged with the spring guide 10 composed of a plurality of ribs, and is guided by the spring guide 10 so that the coil spring 15 can be smoothly expanded and contracted in the axial direction. . The elastic force of the coil spring 15 urges the operating member A composed of the push disk 8 and the push rod 6 forward so that the steel ball 7 projects from the opening 5. At the rear of the switch chamber C, a pair of fixed contacts 16 are arranged with a phase difference of approximately 180 ° in the circumferential direction, and the bases of these fixed contacts 16 are inserted into and supported by the rear end wall 3 ₁ of the base member 3. Their outer ends are connected to lead wires 18 by soldering 19 in a recess 17 formed at the rear end of the base member 3. The recess 17 is filled with a filler 20 such as epoxy resin. The connection part 19 is covered and fixed.

A disk-shaped movable contact 21 is arranged so as to face the inner ends of the pair of fixed contacts 16 which are bent, and a coil is provided between the back surface of the movable contact 21 and the inner surface of the rear end wall 3 ₁ of the base member 3. A switch spring 22 composed of a spring is contracted, and the elastic force of the switch spring 22 urges the movable contact 21 to contact the fixed contact 16 as shown in FIG. The fixed contact 16 and the movable contact 21 constitute the switch S.

The switch operation formed at the intermediate portion of the operating member A, that is, at the base portion of the rear rod portion 8 ₃ of the push disk 8, that is, at the boundary portion between the rear rod portion 8 ₃ and the stepped shaft portion 8 _2. on part 8 ₄ is adjusted member or collar 23 for detecting the stroke adjustment fitted detachably on the rear rod section 8 ₃ is seated, the collar 23 is the switching section 8 ₄ and the movable contact 21 The upper surface faces the movable contact 21 in the interval, and when the operating member A is retracted through the steel ball 7 by the object to be detected, the switch operating unit 8 ₄ moves the movable contact 21 through the collar 23. The switch S can be turned off by pushing it up. The collar 23 can be variably adjusted by exchanging the displacement stroke amount of the operating member A when the switch S performs the switching operation, that is, the detection stroke received by the switch device from the object to be detected.

Next, the operation of this embodiment will be described.

When the switch S is in the free state as shown in FIG. 1, the movable contact 21 is urged toward the fixed contact 16 by the elastic force of the switch spring 22, and both contacts 21, 16 are Upon contact, the switch is in the ON state.

In this ON state, when the steel ball 7 receives an external force from the object to be detected, it moves inward against the elastic force of the coil spring 15, and the push rod 6 engaged with this. The operating member A composed of the push disk 8 and the push disk 8 is displaced backward in the switch chamber C. As a result, the actuating member A moves the movable contact 23 rearward through the collar 23 against the elastic force of the switch spring 22 and separates it from the fixed contact 16, and as a result, the switch S is turned off. . When the external force acting on the steel ball 7 from the detected object is released, the elastic force of the coil spring 15 advances the operating member A composed of the push rod 6 and the push disk 8 until the steel ball 7 reaches the projecting position. Let As a result, the movable contact 21 comes into contact with the fixed contact 16 by the elastic force of the switch spring 22, and the switch S returns to the ON state.

By the way, since the displacement stroke amount of the operating member A when the switch S performs the switching operation is set by the thickness of the collar 23, the displacement stroke amount of the operating member A is changed by replacing the collar 23. For example, when the switch device is used to detect the shift operation state of the vehicle or the operation state of the foot brake of the vehicle, even if there is a difference in the stroke amount detected from the detected object, It is possible to detect both of the states by simply exchanging the collars 23 having different heights.

Further, the operating member A has its front rod portion 6 ₁ and rear rod portion 8 ₃ slidably fitted in the front guide hole 4 and the rear guide hole 11, respectively, and is supported on both sides, since the above the intermediate portion switches the switching section 8 ₄ S is provided, each of the switching operation of the actuating member a, the front, and precisely the front and rear slide is in the draft to the rear guide hole 4 and 11, Even if the switching operation is frequently repeated, the operating member A does not cause “tilt” or “runout”, and it is possible to always guarantee a highly accurate switching operation.

Furthermore, the seal member 13 is reciprocally displaced back and forth following the forward and backward movement of the push rod 6 constituting the actuating member A to liquid-tightly seal between the switch chamber C and the outside. It works to prevent the invasion of the mission oil etc. into the switch chamber C.

Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and various embodiments can be made within the scope of the present invention. In the above-described embodiment, as an example, the case where the switch device is used for detecting the shift operation state of the transmission or the operation state of the foot brake of the vehicle has been described. Of course, it can be implemented as a general switch device. Further, in the above-mentioned embodiment, the actuating member is formed by combining the push rod and the push disk, but it may be integrally formed, or may be formed by connecting three or more members. Further, as the adjusting member for adjusting the displacement stroke of the actuating member, another equivalent substance may be used instead of the collar.

[0023]

As described above, according to the first aspect of the present invention, the casing is formed with the switch chamber having the fixed contact and the movable contact, and the switch chamber is inserted from the outside. In the switch device, the operating member is provided so as to be able to move forward and backward, and the operating member is displaced beyond a predetermined stroke to perform the switching operation of the switch. The stroke of the operating member is variably adjusted. Since the adjustment member for this purpose is detachably attached, it can be applied as various switches with different detection strokes simply by exchanging the adjustment member, which can greatly enhance versatility. The cost of the device can be reduced.

According to a second aspect of the present invention, there is provided the device according to the first aspect, wherein the actuating member includes a switch operating portion facing a movable contact of the switch, and the switch operating portion. Since a rod portion extending along the displacement direction of the operating member is provided, and the adjusting member interposed between the switch operating portion and the movable contact is detachably fitted to the rod portion, It is possible to change the detection stroke amount by simply selectively replacing and fitting the adjusting member to the rod portion, and it is extremely easy to change the detection stroke amount. can do.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of the switch device of the present invention.

FIG. 2 is an exploded perspective view thereof.

FIG. 3 is a perspective view of an operating member and an adjusting member.

[Explanation of symbols]

1 ... Casing 8 ₃ ... Rod part (rear rod part) 8 ₄ ... Switch operation part 16 ... Fixed contact 21 ... Movable contact 23 ... Adjusting member (color) A ... Operating member C ... Switch room S ... Switch

Claims (2)

[Scope of utility model registration request] 1. A fixed contact (16) on a casing (1).
And a movable contact (21), a switch chamber (C) containing a switch (S) is formed, and an actuating member (A) inserted into the switch chamber (C) from the outside is provided so as to be movable back and forth. A switch device configured to perform a switching operation of the switch (S) by displacing an operating member (A) beyond a predetermined stroke, wherein an adjusting member for variably adjusting the stroke of the operating member (A). (23) A switch device, wherein the switch device is detachably attached. 2. The actuating member (A) includes a switch operating portion (8 ₄ ) facing the movable contact (21) of the switch (S), and the actuating member (A ₄ ) formed by the switch operating portion (8 ₄ ). ) Is provided with a rod portion (8 ₃ ) extending along the displacement direction, and the switch operating portion (8 ₃ ) is provided on the rod portion (8 ₃ ).
_4. The switch device according to claim 1, wherein the adjusting member (23) interposed between the movable contact (21) and the movable contact (21) is detachably fitted.