JPH0425181B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a brake pedal for a vehicle, and in particular to a vehicle brake pedal in which the arrangement position of a brake actuator such as a master cylinder or a brake booster and a pedal portion of a brake pedal is relatively biased in the left-right direction of the vehicle body. Regarding the brake pedal of a vehicle that is

One type of vehicle is a vehicle in which the brake actuator, such as a mass cylinder or a brake booster connected to the mass cylinder, is largely deviated from the driver's seat, in other words, the arrangement of the brake actuator and the pedal part of the brake pedal. There are some vehicles in which the installation position is relatively deviated largely in the left-right direction of the vehicle body. In this type of vehicle, in order to operate the brake actuator that is largely deviated from the brake pedal, for example, the
The operating mechanism shown in the figure is employed. The operating mechanism 1 has a rotary shaft 1a rotatably supported on a part of the vehicle body, and an operating lever 1b fixed to one end of the rotary shaft 1a and extending in front of the brake booster 2 to face it. The tip of a brake pedal 3 is fixed to the other end of the rotating shaft 1a, and an operating rod for operating the brake booster 2, such as a push rod 2a, is connected to the lower end of the operating lever 1b via a clevis or the like. Thereby, when the pedal portion 3a of the brake pedal 3 is depressed, the operating lever 1b can be rotated via the rotating shaft 1a.
Therefore, the push rod 2a is pushed and the brake booster 2 and master cylinder 4 are operated, thereby operating each brake.

In this way, in vehicles where the arrangement positions of the brake actuator, such as the master cylinder or brake booster, and the pedal part of the brake pedal are largely offset in the left-right direction of the vehicle body, the position between the brake actuator and the brake pedal is The above-mentioned actuation mechanism must be interposed between the brakes, which complicates the brake operation mechanism, and there is a risk that the operation efficiency may be lowered and the operation feeling may be poor due to insufficient rigidity of the actuation mechanism.

The present invention has been devised to address these problems, and its primary purpose is to eliminate these problems by directly actuating the brake actuator in this type of vehicle.

In order to achieve such an object, the present invention provides a brake pedal for a vehicle of the type described above, in which one end of the arm portion of the brake pedal is rotatably supported on a part of the vehicle body via a universal joint. A support arm rotatably supported at one end of a part of the vehicle body via a universal joint is fixed to the arm part, the arm part is supported by the support arm, and the arm part is tilted downward in the left-right direction. A part of the arm part faces the front of the brake actuator, and a pedal part provided at the other end of the arm part is positioned at a predetermined position so that the pedal part is connected to the arm part and the brake actuator. The support arm is rotatable about a line connecting both support points, and is characterized in that an actuation rod for actuating the brake actuator is connected to a portion of the arm portion facing the brake actuator. be.

As a result, in the present invention, the brake actuator can be directly operated by the brake pedal without interposing any other member such as an actuation mechanism between the brake actuator and the brake pedal. Therefore, according to the present invention, the brake mechanism has a simple structure, a decrease in operating efficiency is suppressed, and the operating feeling is improved.
Further, by appropriately selecting the shape of the brake pedal, etc., the arrangement positions of the pedal portion of the brake pedal, the master cylinder, the brake booster, etc. can be arbitrarily selected, which increases the degree of freedom in design.
In addition, in the present invention, if the tip of the arm portion of the brake pedal is rotatably supported on a part of the vehicle body on a line connecting the pedal portion and the brake actuator, twisting of the arm portion when the pedal is depressed is reduced and strength is increased. Extremely advantageous.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a brake pedal according to the present invention.

This brake pedal 10 is a brake pedal for a vehicle in which a brake booster is disposed with a large deviation to the right of the vehicle body with respect to the pedal part, and an arm part 11 is bent in the vertical and longitudinal directions.
and a pedal portion 12 integrally formed at the lower end thereof. Further, a universal joint such as a ball joint 13 is provided at the tip of the arm portion 11, and the lower end of an extension bar 14 is fixed to the lower portion of the arm portion 11. This extension bar 14 corresponds to the support arm of the present invention, and the extension bar 14 is also provided with a universal joint such as a ball joint 15.

Therefore, in this brake pedal 10, the ball joint 13 of the arm portion 11 is attached to the right side of the vehicle body B approximately on the line l1 connecting the center point 12a of the pedal portion 12 and the center point 21a of the brake booster 21. It is being ball joint 1
3 is attached to a part of the vehicle body B by bolts and nuts at a flange part 13b provided on the casing 13a, and rotatably supports the arm part 11, and a part thereof is attached to the front of the brake booster 21. They are opposed to each other, and the pedal portion 12 is located at a predetermined position. Further, the ball joint 15 of the extension bar 14 is connected to the pedal part 12.
It is attached to a part of the vehicle body B approximately above.
The ball joint 15 is the leg portion 15 of the joint.
The extension bar 14 is attached to a part of the vehicle body B by a nut etc. screwed onto the extension bar 14, and rotatably supports the extension bar 14. As a result, the pedal portion 12 of the brake pedal 10 is connected to both ball joints 1.
It is rotatable in the front-back direction around a line l2 connecting joint parts 3 and 15.

On the other hand, the portion of the arm portion 11 of the brake pedal 10 that faces approximately the center of the brake booster 21 is located at the push rod 2 of the brake booster 21.
The connecting portion 10a is formed to connect the two. This push rod 22 corresponds to the actuating rod of the present invention. As shown in FIG. 3, the connecting portion 10a includes a cylinder 16 that is fixed to the arm portion 11 in a penetrating state, and a bolt 17 that is screwed into the inner hole of the cylinder 16 so that it can move forward and backward. The tip of the bolt 17 is formed into a receiving portion 17a that rotatably receives the head 22a of the push rod 22. Note that the push rod 22 is biased toward the arm portion 11 by a compression spring (not shown), and its head 22a is attached to the receiving portion 17a of the bolt 17.
It has been accepted responsibly. Further, the bolt 17 is positioned by a lock nut 17b, and its position can be adjusted.

Further, a bracket 1 provided near the connecting portion 10a of the arm portion 11 of the brake pedal 10
The other end of a tension spring 18 whose one end is locked to a part of the vehicle body B is locked to 1a. This tension spring 18 acts as a return spring after the brake pedal 10 is depressed, and its urging force moves the brake pedal 10 to the second position.
The arm portion 11 is rotated in the counterclockwise direction as shown in the figure, and is brought into contact with a stopper (not shown) provided on the vehicle body B. As a result, further rotation of the brake pedal 10 is restricted and the brake pedal 10 is in the state shown in FIGS. 1 and 2. In addition, in FIG. 1 and FIG. 2, the symbol A indicates an accelerator pedal.

In the brake pedal 10 configured in this way, when the pedal is depressed, the pedal portion 12 rotates forward about the line l2, and at this time, the connecting portion 10a provided on the arm portion 11 pushes the push rod 22 of the brake booster 21. move. As a result, the brake booster 21 operates to operate a mass cylinder (not shown) to operate each brake. Also,
When the depressing operation is released, the tension spring 18
The brake pedal 10 rotates rearward and returns to its original position, and at the same time the push rod 22 returns to the rear under the action of a compression spring (not shown). As a result, the brake booster 21 and the master cylinder return to the non-operating state, rendering each brake non-operating.

In this way, in this embodiment, the brake booster 21 is directly actuated by the brake pedal 10 without interposing an actuation mechanism between the brake booster 21 and the brake pedal 10 as in the conventional case. Therefore, the brake operating mechanism has a simple structure, and it is possible to eliminate and improve the reduction in operating efficiency and poor operating feeling due to insufficient rigidity of the constituent members of the operating mechanism. In addition, by appropriately selecting the shape of the arm portion 11 of the brake pedal 10,
The arrangement positions of the pedal part 12 and the brake booster 21 can be arbitrarily selected, which is advantageous because there is a large degree of freedom in design. In addition, in this example,
In particular, since the tip of the arm portion 11 of the brake pedal 10 is supported on the vehicle body B approximately on the line l1 connecting the center point of the pedal portion 12 and the center point of the brake booster 21, the reaction from the push rod 22 occurs when the brake pedal is depressed. There is little twisting force acting on the arm portion 11, which is extremely advantageous in terms of the strength of the brake pedal 10.

Note that the present invention is not limited to the above-mentioned embodiments, and can be applied to various types of devices in which the arrangement position of the brake actuator and the pedal part of the brake pedal, such as the master cylinder and brake booth, is largely offset in the left-right direction of the vehicle body. This can be applied to the brake pedal of a vehicle as appropriate.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of a brake pedal according to the present invention, FIG. 2 is a side view of the brake pedal, FIG. 3 is an enlarged cross-sectional view of a connecting portion of the brake pedal, and FIG. The figure is a front view of a conventional brake operating mechanism, and FIG. 5 is a side view of the same. Explanation of symbols, 10...Brake pedal, 10a
...Connection part, 11...Arm part, 12...Pedal part, 13, 15...Ball joint (universal joint), 14...Extension bar (support arm), 21...Brake booster, 22... Push rod (actuating rod).

Claims (1)

[Claims] 1. In a vehicle in which the arrangement positions of a brake actuator such as a master cylinder or a brake booster and a pedal part of a brake pedal are largely offset from each other in the left-right direction of the vehicle body, one end of the arm part of the brake pedal can be freely moved. A support arm is rotatably supported on a part of the car body via a joint, and a support arm whose one end is rotatably supported on a part of the car body via a universal joint is fixed to the arm portion. a pedal portion supporting the arm portion and extending the arm portion downwardly and inclined in the left-right direction, with a portion of the arm portion facing the front of the brake actuator, and provided at the other end of the arm portion; is positioned at a predetermined portion so that the pedal portion can be rotated around a line connecting both support points of the arm and the support arm, and the pedal portion is positioned at a predetermined portion of the arm portion facing the brake actuator. A vehicle brake pedal characterized by connecting an actuating rod that operates an actuator.