JPS6318094Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bracket structure for a tactile limit switch designed to facilitate and speed up the positioning of the tactile limit switch.

An exhaust brake switch or stop lamp switch that operates by sensing the pedal stroke of a car's clutch or brake is an application of a touch limit switch, and generally has a structure as shown in Figure 1a. There are many things. That is, a foot pedal 2 rotatably supported with respect to the vehicle body 1 has a touch limit switch 4 screwed into a bracket 3 integral with the vehicle body 1.
A push plate 6 is provided that protrudes and comes into contact with the push rod 5. When the foot pedal 2 is depressed, the push rod 5 is pushed out by the spring force of a compression spring (not shown) built into the touch limit switch 4, and the touch limit switch is activated. 4 is now operational. In this case, as shown in FIG. 1b showing the cross-sectional structure of the bracket 3, the push plate 6 directly hits the end surface 7 of the touch-limit switch 4 from which the push rod 5 protrudes, applying an impact force to the touch-limit switch 4. To prevent this, the end face 7 of the touch limit switch 4 is pulled inward from the end face 8 of the bracket 3, which faces the push plate 6 and can come into contact with the push plate 6. In other words,
The end surface 8 of the bracket 3 functions as a stopper for the pusher plate 6, but simply retracting the end surface 7 of the touch limit switch 4 further than the end surface 8 of the bracket 3 will prevent the push rod 5 from coming from the end surface 8 of the bracket 3. Since the amount of protrusion is not constant depending on the vehicle, there is a possibility that the touch limit switch 4 may not operate even if the foot pedal 2 is depressed by a predetermined amount. For this reason, conventionally, when attaching the tactile limit switch 4 to the bracket 3, a gauge is used to adjust the bracket so that the amount of retraction from the end surface 8 of the bracket 3 to the end surface 7 of the tactile limit switch 4 is constant. The screwing amount of the tactile limit switch 4 relative to the screw limit switch 3 was adjusted, which was extremely time-consuming and troublesome work.

In view of the poor workability when assembling conventional switch devices, the present invention aims to provide a bracket for a tactile limit switch with a new structure that allows the tactile limit switch to be positioned easily and quickly. shall be.

The configuration of the switch device of the present invention that achieves this object is such that a push plate is fixed to an operating member that can freely reciprocate with respect to a fixed member, and a male threaded portion of a touch limit switch is attached to a bracket that is integrated with the fixed member. In the switch device, the amount of movement of the operating member is sensed by a push rod that protrudes from the tip of the male threaded portion and comes into contact with the push plate. The present invention is characterized in that the bracket is provided with a locking portion having a constant thickness that can regulate the screwing amount and maintain a constant protrusion amount of the push rod.

Hereinafter, an embodiment in which the switch device according to the present invention is applied to a stop lamp switch for an automobile will be described in detail with reference to FIG. do. A foot pedal 13 is rotatably supported on the vehicle body 11 via a pin 12, and a push plate 16 is screwed and protrudes from the foot pedal 13, which comes into contact with a push rod 15 of a touch limit switch 14. The shaped bracket 17 has
Tatsuchirimitsutsuchi 14 Pushrods 1
A locking plate 19 is welded to the frame body of a constant thickness that can come into contact with the distal end surface 18 of the male threaded portion 24 from which the locking plate 5 protrudes. A nut 20 is welded to the bracket 17, into which the male threaded portion 24 of the touch limit switch 14 is screwed.
The lock nut 21, which works together with the lock nut 21 to clamp the bracket 17, fixes the touch limit switch 14 to the bracket 17.

Therefore, please set the Tatsuri limit switch 1 in advance.
4, and screw the lock nut 21 into the male threaded portion 24 of the touch limit switch 14 until the missing end surface 18 of the male threaded portion 24 of the touch limit switch 14 comes into contact with the locking plate 19.
4 into the nut 20, and then tighten the lock nut 21 to fix the tactile limit switch 14 to the bracket 17. With this, push plate 1
6 is a male threaded portion 24 of the tactile limit switch 14.
The push rod 15 contacts the locking plate 19 without contacting the lost end surface 18 of the locking plate 19, and the push rod 15 can always protrude from the locking plate 19 by a certain amount. It is clear that positioning can be done quickly and easily.

In the embodiment described above, if the locking plate 19 is thin, there is a risk that it will be deformed by the impact when the push plate 16 comes into contact with it. As shown in FIG. 3a, it is preferable to use the bracket 17 and the locking plate 19, which the end surface 18 of the male threaded portion 24 of the touch limit switch 14 comes into contact with, in a superimposed manner. Further, as shown in FIG. 3b showing the cross-sectional structure of the main part of another embodiment of the present invention, a locking portion 22 is formed by integrating a locking plate 19 and a nut 20, and an internally threaded member 23. It is also possible to weld it to the bracket 17 and screw the male threaded part 24 of the touch limit switch 14 into the female threaded member 23 until its tip end surface 18 abuts the locking part 22. In these embodiments, members having the same functions as those in the embodiment shown in FIG. 2 are denoted by the same reference numerals.

As described above, according to the switch device of the present invention, the bracket is provided with a locking part of a certain thickness that regulates the screwing amount of the male threaded part of the tactile limit switch, so that the male threaded part of the tactile limit switch can be simply screwed into the bracket. Since the push rod can be positioned by the push rod alone, and the protrusion amount of the push rod can be kept constant, the workability is significantly improved compared to conventional positioning methods, and the touch limit switch can be positioned quickly and easily. Is possible.

[Brief explanation of the drawing]

Figure 1a is a cutaway view showing the mounting structure of a conventional stop lamp switch in an automobile.
Figure b is an enlarged cross-sectional view of the bracket.
Figure 2a is a cutaway view showing the mounting structure of an embodiment of the present invention applied to an automobile stop lamp switch, Figure 2b is an enlarged sectional view of a part of the bracket, and Figures 3a and b are These are cross-sectional views showing an example of another structure of the bracket, and the reference numerals in the drawings are: 11 is the vehicle body, 13 is a foot pedal, 14 is a touch limit switch, 15 is a push rod, 1
6 is a push plate, 17 is a bracket, 18 is a tip end surface of a male threaded portion, 19 is a locking plate, 20 is a nut, 21 is a lock nut, 23 is a female threaded member, and 24 is a male threaded portion.

Claims (1)

[Scope of utility model registration request] A push plate is fixed to an operating member that can freely reciprocate with respect to a fixed member, and a male threaded portion of a tactile limit switch is screwed to a bracket that is integrated with the fixed member, and a push plate that protrudes from the tip of the male threaded portion is attached to the push plate. In a switch device in which the amount of movement of the operating member is sensed by a push rod that comes into contact with a plate, the push rod comes into contact with the tip of the male threaded portion to regulate the screwing amount of the male threaded portion and maintain a constant protrusion amount of the push rod. 1. A switch device characterized in that said bracket is provided with a locking portion having a constant thickness.