JPH0661626U - Industrial vehicle brake pedal - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a brake pedal device for an industrial vehicle, which has excellent workability and maintainability in assembly and has a simple structure. [Structure] Pedal arm 11 and brake pedal 12
And a stopper bracket 1 attached to the body frame
4 is a brake pedal device 10 for an industrial vehicle, which has an abutting piece 15 attached to the pedal arm 11 and normally abutting against the stopper bracket 14. A limit switch 20 for turning on and off a stop lamp is attached to the stopper bracket 14, and the contact piece 15 operates the movable shaft 21 of the limit switch 20 in conjunction with the pedal arm 11.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a brake pedal device for an industrial vehicle that has a stop lamp operating part, has a simple structure, and is excellent in maintainability.

[0002]

[Prior art]

 In the brake pedal device for an industrial vehicle, as shown in FIG. 2, a brake pedal 92 is attached to the end of a pedal arm 91, and the other end of the pedal arm 91 is connected to a brake valve (not shown). During normal operation when the brake pedal 92 is not operated, the brake pedal device 9 is stopped with the stopper 93 attached to the lower portion of the pedal arm 91 in contact with the stopper bracket 94. Further, in the normal stopped state, the switch bar 95 attached to the upper portion of the pedal arm 91 presses the movable shaft 961 of the limit switch 96.

The limit switch 96 is attached to a switch bracket 98 attached to a vehicle body frame 97, and the limit switch 96 is connected to a stop lamp for displaying a stop of the vehicle. Turn on / off (not shown).

When the brake pedal 92 is depressed, the stopper 93 is separated from the stopper bracket 94, the switch bar 95 is separated from the movable shaft 961 of the limit switch 96, and the limit switch 96 is operated, so that the stop lamp is turned on. Suru

Further, the pedal arm 91 is automatically urged to restore the original normal stop position when the brake pedal 92 is stopped. An adjusting screw 99 for adjusting the stop position of the brake pedal 92 is provided between the stopper 93 and the stopper bracket 94.

[0006]

[Problems to be solved]

 However, the conventional brake pedal device 9 has the following problems. The limit switch 96 and the switch bar 95 for operating the limit switch 96 are located above the pedal arm 91 and directly below the instrument panel in the cab.

On the other hand, the limit switch 96 needs to be repaired, such as exchanged, and the position of the limit switch 96 must be adjusted for proper operation of the stop lamp at the time of assembly. However, the area directly below the instrument panel is narrow and the steering shaft and operating levers are crowded, making maintenance and adjustment difficult for the members located here.

Further, the body frame 97 is provided with a stopper bracket 94 and a switch bracket 98 separately, and the pedal arm 91 is provided with a stopper 93 and a switch bar 95 separately. There is a problem that there are many. Further, the adjustment of the operating position of the limit switch 96 and the adjustment of the stop position of the brake pedal 92 at the time of assembly have to be performed separately in two stages, which causes a problem that it takes a lot of adjustment man-hours. In view of the above problems of the conventional brake pedal device, the present invention aims to provide an inexpensive brake pedal device which is excellent in workability of assembly and maintainability and has a simple structure.

[0009]

[Means for solving the problem]

 The present invention includes a pedal arm biased to restore it to a predetermined position, a brake pedal attached to the end of the pedal arm, a stop bracket attached to the vehicle body frame, and the pedal arm. In a brake pedal device for an industrial vehicle, which normally has a contact piece that is in contact with the stopper bracket, a limit switch that operates the movable shaft to open and close the circuit is attached to the stopper bracket. Further, the limit switch is connected so as to turn on and off a stop lamp for displaying a stop, while the contact piece is mounted so as to operate a movable shaft of the limit switch in conjunction with a pedal arm. It is in a brake pedal device characterized by this.

The most remarkable point in the present invention is that the pedal arm is provided with an abutment piece, which abuts the stopper bracket during normal operation when the brake pedal is not operated, while the aforesaid stopper bracket is used. Limit switch is attached to the. The limit switch is connected to the stop lamp and has a movable shaft that opens and closes the limit switch. The abutment piece is attached to the pedal arm so as to operate the movable shaft of the limit switch in conjunction with the movement of the pedal arm.

[0011]

[Action and effect]

 In the brake pedal device of the present invention, the limit switch is attached to the stopper bracket. Therefore, the switch bracket (98 in FIG. 2) in the conventional device is unnecessary. Further, since the contact piece that adjusts the stop position of the brake pedal operates the limit switch, the switch bar (95 in FIG. 2) in the conventional device is not necessary. Therefore, the number of parts is smaller than that of the conventional device, and the structure of the brake pedal device is simple.

Further, if the positional relationship between the contact piece and the stopper bracket is adjusted at one location, the stop position of the brake pedal can be adjusted and the operating position of the limit switch can be adjusted. Therefore, unlike the conventional device, it is not necessary to separately adjust the position of the limit switch and the stop position of the brake pedal, and the man-hours for position adjustment are reduced.

Further, since the number of places where such positional relationship adjustment should be performed is reduced from two to one, the degree of freedom in selecting the mounting position is increased. Therefore, it is not necessary to attach the above-mentioned member that needs to be adjusted directly below the narrow instrument panel, and it is possible to place it on the lower part of the pedal arm with more space. Therefore, the workability of maintenance such as replacement of the limit switch is improved. As described above, according to the present invention, it is possible to provide a brake pedal device that is excellent in workability of assembly and maintainability, has a simple structure, and is inexpensive.

[0014]

【Example】

 A brake pedal device according to an embodiment of the present invention will be described with reference to FIG. In this example, as shown in FIG. 1, a pedal arm 11 urged to restore a predetermined position, a brake pedal 12 attached to an end portion of the pedal arm 11, and a vehicle frame are attached. The brake pedal device 10 for an industrial vehicle has a stopper bracket 14 and a contact piece 15 that is attached to the pedal arm 11 and normally contacts the stopper bracket 14.

A limit switch 20 for opening and closing the circuit by operating the movable shaft 21 is attached to the stopper bracket 14, and the limit switch 20 is connected so as to turn on / off a stop lamp (not shown) for stop display. ing. On the other hand, the contact piece 15 is attached so as to operate the movable shaft 21 of the limit switch 20 in conjunction with the pedal arm 11.

Each of these will be described in detail below. The brake pedal device 10 of this example is arranged in the lower part of an instrument panel, and as shown in FIG. 1, a brake pedal 12 is attached to a lower end portion 111 of a pedal arm 11, and the other end portion is a brake valve. And linked via a link mechanism. The pedal arm 11 is urged by a restoring mechanism (not shown) so that when the brake pedal 12 is depressed, the pedal arm 11 moves in conjunction therewith, and when the brake pedal 12 is released, the pedal arm 11 returns to its original predetermined position.

In a normal state in which the brake pedal 12 is not operated, the contact piece 15 attached to the lower part of the pedal arm 11 is in contact with the stopper bracket 14, and the stopper mechanism 14 is urged by the restoring mechanism. The bracket 14 is pressed upward. Further, the adjusting bolt 16 is attached to the upper surface 151 of the contact piece 15, and the height h of the head 161 of the adjusting bolt 16 from the upper surface 151 can be adjusted.

Then, by changing the height h, it is possible to change the height of the brake pedal 12 from the floor surface under normal conditions. On the other hand, a limit switch 20 is attached to the stopper bracket 14 fixed to the vehicle body frame. The limit switch 20 has its movable shaft 21 projected from the lower surface 141 of the stopper bracket 14, and is mounted by screwing a lock nut 144 onto a weld nut 143 fixed to the upper surface 142 of the stopper bracket 14.

The limit switch 20 is connected to a stop lamp (not shown) by a lead wire 201. In the normal state, the tip of the movable shaft 21 is pushed by the head 161 of the adjusting bolt 16 and retracts to the position of the lower surface 141 of the stopper bracket 14 as shown in FIG. When the brake pedal 12 is depressed, the head 161 of the adjust bolt 16 descends, the movable shaft 21 projects from the lower surface 141 of the stopper bracket 14, and the limit switch 20 operates. Then, the stop lamp lights up.

Next, the function and effect of the brake pedal device 10 of this example will be described. In the brake pedal device 10 of this example, the limit switch 20 for operating the stop lamp is attached to the stopper bracket 14. The contact piece 15 attached to the pedal arm 11 actuates the limit switch 20 and, at the same time, contacts the stopper bracket 14 to position the stop position of the brake pedal 12 under normal conditions.

Therefore, in this example, the switch bracket (FIG. 2, reference numeral 98) and the switch bar (FIG. 2, reference numeral 95) in the conventional device are unnecessary. Therefore, the number of parts is smaller than that of the conventional device, and the structure of the brake pedal device 10 is simple and inexpensive.

Further, the adjustment of the attachment position of the limit switch 20 and the adjustment of the stop position of the brake pedal 12 can be performed simultaneously by adjusting the positional relationship between the contact piece 15 and the stopper bracket 14. . Therefore, unlike the conventional device, it is not necessary to separately adjust the position of the limit switch and the stop position of the brake pedal, and the number of assembling steps can be reduced.

The abutting piece 15 and the stopper bracket 14 may be attached at a lower position of the pedal arm 11 which is spatially more lenient than the position directly below the instrument panel. Therefore, maintainability such as replacement of the limit switch 20 is improved as compared with the conventional one. As described above, according to the present example, it is possible to provide the brake pedal device 10 which is excellent in workability of assembling and maintainability, has a simple structure, and is inexpensive.

[Brief description of drawings]

FIG. 1 is a perspective view of a brake pedal device according to an embodiment.

FIG. 2 is a front view of a conventional brake pedal device.

[Explanation of symbols]

 10. ． ． Brake pedal device, 11. ． ． Pedal arm, 12. ． ． Brake pedal, 14. ． ． Stopper bracket, 15. ． ． Abutment piece, 20. ． ． Limit switch, 21. ． ． Movable axis,

Claims (1)

[Scope of utility model registration request] 1. A pedal arm urged to restore to a predetermined position, a brake pedal attached to an end of the pedal arm, a stopper bracket attached to a vehicle body frame, and a pedal arm attached to the pedal arm. A brake pedal device for an industrial vehicle having a contact piece that normally contacts the stopper bracket, wherein the stopper bracket is provided with a limit switch for operating a movable shaft to open and close a circuit. , The limit switch is connected to turn on and off a stop lamp for stop display, while the abutting piece is mounted so as to operate the movable shaft of the limit switch in conjunction with the pedal arm. Brake pedal device characterized in that