JPH0741872Y2 - Rotation control device for accelerator pedal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a rotation restricting device for an accelerator pedal of an automobile or the like.

<Prior Art> In the accelerator pedal rotation restricting device, as shown in FIG. 3, a full throttle stopper 4 that is screwed into a bracket 5 and the lower surface of the accelerator pedal 1 abuts, and a stopper 4 that is close to the stopper 4. Japanese Utility Model Laid-Open No. 59-102530 provides a structure in which the air cylinder 7 is fixed to a bracket 8 and the piston rod 9 is in contact with the lower surface of the accelerator pedal 1.

<Problems to be Solved by the Invention> In the above-mentioned conventional technique, when the piston rod 9 is shortened, the maximum rotation amount of the accelerator pedal 1 is restricted by the full throttle stopper 4, and the switch 12 is turned on to turn on the solenoid valve. When 10 is opened and air is supplied from the air tank 11 to the air cylinder 7 to extend the piston rod 9,
The maximum amount of rotation of the accelerator pedal 1 due to the normal pedaling force is restricted by contact with the piston rod 9 before the regulating position of the stopper 4, and further rotation increases the pedaling force by the air cylinder 7, resulting in unnecessary throttle operation. The purpose is to prevent.

By the way, in a work vehicle including a power take-out device such as a crane truck and a mixer truck, work is performed with the engine operating. At this time, it is dangerous to raise the engine speed when the accelerator pedal is accidentally depressed in the driver's cab. Although there is a manual accelerator interlock device to prevent this, it is desirable to stop the movement of the accelerator pedal directly with the pedal.

If the stroke of the piston rod 9 of the conventional air cylinder 7 is increased, it is possible to directly stop the movement of the accelerator pedal to perform the accelerator interlock. However, for that purpose, there is a problem of space due to the increase of the stroke of the piston rod 9. Alternatively, there is a limit to the size of the pedal, and the above-mentioned conventional technique cannot be applied.

<Means for Solving the Problems> The present invention has been made to solve the above problems.
The structure is such that a rear end of a bracket fixed on the floor in front of the accelerator pedal extends below the accelerator pedal, and is pivotally supported in a seesaw-like manner, and the pivotal support point of the lever. Projected upward on the rear upper surface,
A first stopper for restricting a full throttle rotation position of the accelerator pedal; a second stopper for interlocking provided on a rear end surface of the lever in a longitudinal direction of the lever to restrict a depressing operation of the accelerator pedal; A cylinder connected to the front end of the lever for switching the first stopper and the second stopper to a position facing the lower surface of the accelerator pedal;
An electromagnetic valve for controlling this cylinder and a switch for opening and closing the electromagnetic valve are provided.

<Operation> With the above configuration, when the air cylinder is not in operation, the first stopper is opposed to the accelerator pedal so that the rotation end of the accelerator pedal is restricted to the full throttle position, and the second stopper is caused by the swing of the lever due to the operation of the air cylinder. Interlock to regulate the depression of the accelerator pedal with.

<Embodiment> An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 is an accelerator pedal. A bracket 24 is fixedly mounted on the front floor of the accelerator pedal 1, and a lever 25 is attached to the bracket 24, the rear end of which extends below the accelerator pedal 1 and is pivotally supported in a seesaw-like manner. There is.

A first stopper 26 for restricting the full throttle rotation position of the accelerator pedal 1 is provided on an upper surface of the lever 25 rearward of the shaft fulcrum so as to project upward, and a rear end surface of the lever 25 is provided with an accelerator pedal 1 A second interlocking stopper 27 for restricting the stepping operation is provided so as to project in the longitudinal direction of the lever 25.

The piston rod 22 of the air cylinder 20 is connected to the front end of the lever 25. The air cylinder 20 is internally provided with a piston 21 integrated with a piston rod 22, and a spring 23 that constantly moves in a direction in which the piston 21 is elastically pressed to retract the piston rod 22 into the air cylinder 20.

11 is an air tank, and the air cylinder is
Connected to 20. An electromagnetic valve 10 is provided in the conduit 13, and an electric switch 12 for opening and closing the electromagnetic valve 10 is connected to the electromagnetic valve 10.

Next, the operation of the present invention will be described. When air is not supplied to the air cylinder 20, as shown in FIG.
Piston rod 22 is air cylinder by spring 23
20 Retracted inward. As a result, the lever 25 is lifted up on the front end side, and thus is in the lowered position on the rear end side. In this state, when the accelerator pedal 1 is depressed, the lower surface of the accelerator pedal 1 comes into contact with the first stopper 26 and regulates the maximum rotation position, that is, the full throttle position.

By the way, when the electric switch 12 is turned on and the solenoid valve 10 is opened to supply the air in the air tank 11 to the air cylinder 20,
The piston rod 22 presses the outside of the air cylinder 20 against the force of the spring 23, lowers the front end side of the lever 25,
Raise the rear end. As a result, as shown in FIG. 2, the second stopper 27 on the rear end surface of the lever 25 comes into contact with the lower surface of the accelerator pedal 1 in the original position (the position where the pedal is not depressed),
Even if the pedaling force is applied, the movement is ensured to be completely stopped.

<Effect of the Invention> As described above, according to the present invention, the first and second stoppers are provided on one lever pivotally supported by the air cylinder on the bracket and swinging like a seesaw, and the first stopper is the full throttle of the accelerator pedal. The position is regulated, and even if the second stopper applies a pedaling force to the accelerator pedal, the movement is completely stopped and the interlock state is secured. Therefore, the accelerator pedal can be fully operated by a simple structure and operation. It is possible to regulate the two positions of the throttle position and the accelerator interlock, and the lever ratio of the lever that swings like a seesaw can be used to switch between the two position regulation with a small stroke of the air cylinder. Can be adopted, and there are advantages that weight can be reduced, installation space can be reduced, and cost can be reduced.

[Brief description of drawings]

FIG. 1 is a structural diagram of the device of the present invention, FIG. 2 is an operation explanatory diagram showing an accelerator interlock state, and FIG. 3 is a structural diagram of a conventional device. 1 ... accelerator pedal, 20 ... air cylinder, 25 ... lever,
26 ... First stopper, 27 ... Second stopper.

Claims (1)

[Scope of utility model registration request] 1. A lever fixed to a floor in front of the accelerator pedal, the rear end of which extends below the accelerator pedal and pivotally supported in a seesaw-like manner, and the pivot point of the lever. A first stopper, which is provided on the rear upper surface so as to project upward and regulates the full throttle rotation position of the accelerator pedal, and a rear end surface of the lever, which is provided so as to project in the longitudinal direction of the lever, regulates the depression operation of the accelerator pedal. A second stopper for interlocking, which is connected to the front end of the lever, and is connected to the first stopper and the second stopper.
A rotation restricting device for an accelerator pedal, comprising: a cylinder that switches a stopper to a position facing the lower surface of the accelerator pedal; and a solenoid valve that controls the cylinder and a switch that opens and closes the solenoid valve.