JPH05463Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a parking brake device for a vehicle.

(Prior Art) Conventionally, as a parking brake device for a vehicle, the brake can also be applied by stroking a base plate with an electric drive unit that applies a stroke to the parking brake cable to apply the brake. There are known devices that make it work. (For example, see Utility Model Application Publication No. 58-75156).

(Problem to be solved by the invention) However, in the above structure, as an electric drive unit,
Using a threaded rod member rotationally driven by a motor, and a nut member that is threaded onto the threaded rod member and moves to apply a stroke equal to the stroke applied to the brake cable by rotation of the threaded rod member,
Furthermore, since the operating lever is installed separately, the device becomes relatively large and occupies a large installation area.

The present invention pivots the parking brake operating lever and the actuating body formed by the actuator on the same axis so that the rotating body for attaching the parking cable can be independently operated and rotated.
The purpose is to make it possible to achieve both manual operation and power operation with a simple configuration, and to make the device more compact.

(Means for Solving the Problem) The means for achieving the above object of the present invention includes a parking brake operation lever rotatably supported on the vehicle body via a support shaft, and a parking brake operation lever rotatably supported on the vehicle body via a support shaft. a rotating body rotatably supported; a brake operating member having one end connected to the rotating body and the other end connected to a brake member of a wheel; and a brake operating member that is coaxial with the rotating body and pivots on the support shaft. an actuator that is pivotably supported; an actuator that is provided on the vehicle body and rotates the actuator about the support shaft; and an actuator that is provided on either one of the operation lever and the rotating body and that is opposed to the other. A first protruding pin portion protruding toward the side is provided on the other of the operating lever and the rotating body, and when the operating lever is operated in the brake activation direction, the first protruding pin portion engages and rotates the rotating body. a first engaging portion that rotates the moving body in the brake activation direction; a second protruding pin portion that is provided on either one of the actuating body and the rotating body and projects toward the other opposing side; and the actuating body and provided on the other side of the rotating body,
When the actuating body rotates in the brake operating direction due to the operation of the actuator, the second protruding pin portion engages and rotates the rotating body in the brake operating direction. .

(Function) Accordingly, in the present invention, when manually operating the parking brake, when the operating lever is rotated in the brake operating direction, the first protruding pin part engages with the first engaging part, and the rotating body will rotate until the parking brake is activated.

On the other hand, when the parking brake is operated by an actuator without manual operation, the actuator rotates in the brake activation direction due to the actuator's operation, and the rotation of the actuator causes the second protruding pin portion to move to the second position. The rotating body engages with the engaging portion and rotates until the parking brake is activated.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

<First Embodiment> As shown in FIGS. 1 to 3, a parking brake device 1 for a vehicle is a parking brake operating device rotatably supported by a support shaft 4 on a brake 3 fixed to the vehicle body. A brake cable 6 as a brake operating member is connected to the lever 5 and is rotatably supported on the support shaft 4 of the operating lever 5 and connected to a brake shoe (not shown) that is a brake member of the wheel. A rotating body 7 and an actuating body 8 pivotably supported on the support shaft 4 so as to be rotatable on the same axis as the rotating body 7.
and an actuator 9 which is fixedly attached to the bracket 3 and includes a motor capable of forward and reverse rotation for rotating the actuating body 8 about the support shaft 4 by means of an auxiliary mechanism 10.

Between the operating lever 5 and the rotating body 7, a first
Engagement means A are provided. The first engaging means A
comprises a pin 5c as a first protruding pin portion protruding from the operating lever 5, and an arc-shaped elongated hole 7c drilled in the rotating body 7 into which the pin 5c is slidably fitted. When the lever 5 is operated in the brake application direction (clockwise in FIG. 1), the pin 5c engages with the end 7h (first engagement part) of the arc-shaped elongated hole 7c, causing the rotating body 7 to move in the brake application direction. It is configured to rotate. On the other hand, a second engagement means B is provided between the rotating body 7 and the actuating body 8.
The second engagement means B includes a second
It is equipped with a pin 8e as a protruding pin portion and an arcuate elongated hole 7d drilled in the rotating body 7 and into which the pin 8e is slidably fitted. When rotating in the clockwise direction (in Figure 1), the pin 8e is inserted into the arc-shaped elongated hole 7d.
It is configured to engage with the end portion 7i (second engaging portion) of the rotary body 7 to rotate the rotary body 7 in the brake activation direction.

The operating lever 5 is composed of a grip portion 5b having a ratchet release button 31 at the top end thereof, and a base body 5a formed by folding a steel plate twice so as to sandwich the bracket 3 therein. Base body 5a
A grip part 5b is attached to one end, and a hole 5d is provided near the other end to rotatably fit into the support shaft 4 fixed to the bracket 3 in a protruding state. A pawl 34 that engages with a ratchet gear 3a formed in an arc shape diagonally above the front of the bracket 3 is rotatably supported by a pin 35, and a spring 32 in the grip portion 5b keeps the pawl 34 engaged at all times. the release button 31
A link 33 is slidably held, which transmits a releasing turning force to the pawl 34 by a pressing force. A pin 5c constituting the first engaging means A is provided on the side surface of the base body 5a in the direction in which the support shaft 4 protrudes, at a position a predetermined distance l from the center of the hole 5d.

The rotating body 7 is formed by integrally welding a substantially circular base plate 7a and a substantially semicircular complementary plate 7b having a bulged central circular portion at the bulged central portion, and has a support shaft at the center. Hole 7 that rotatably fits into 4
It is equipped with e. The board 7a has an elongated hole 7c that fits the pin 5c, extending from the center of the hole 7e to the pin 5.
It is formed in an arc shape with a radius equal to the distance l at position c and has a length corresponding to the necessary brake operation stroke, and the peripheral part of the supplementary plate 7b that is spaced from the base plate 7a is provided with the above-mentioned actuator. A long hole 7d, which fits into a pin 8d fixed to the body 8, is formed in an arc shape with the same radius as the long hole 7c. Also rotating body 7
A fitting hole 7f for holding the brake cable 6 with a continuous pin 6a fixed to the side thereof is formed in its periphery, and a parking brake fixed to the middle part of the bracket 3 is formed in its outer periphery. A protrusion 7g extending in the tangential direction is formed to press the operation indicator lamp switch 37 in the brake operation position.

In the actuating body 8, a pair of holding holes 8b are formed near the outer end of a substrate 8a formed by bending an elongated steel plate into a U shape, and the second engaging means B is formed in the holes 8b. A pin 8e is held in a protruding state on the bracket side. Further, a pair of holes 8c are formed near the inner end of the base body 8a to rotatably fit into the small diameter portion 4a of the support shaft 4, and in the intermediate portion, the rotation of the actuator 9 is controlled by the rotation of the actuating body. A pair of elongated holes 8d are formed to slidably hold the pins 11 of the auxiliary mechanism 10 that converts into motion. The actuating body 8 is attached to a support shaft end flange 4b such that it comes into contact with the stepped portion of the small diameter portion 4a of the support shaft 4 and maintains a constant distance from the rotating body 7.
is held by.

The auxiliary mechanism 10 has one end connected to an output shaft 9a of an actuator 9 installed at the rear end of the bracket 3, and the other end connected to the bearing 1 at the front end of the bracket 3.
3, and a pin 11, which has a threaded hole in its side and is held in a long hole 8d of the actuating body.

A method of operating the parking brake device 1 for a vehicle according to this embodiment will be explained. First, when manually operating the parking brake, grasp the grip portion 5b of the operating lever 5 with your hand, press the ratchet release button 31 with your thumb, and pull up the operating lever 5 with the pawl 34 released from the ratchet gear 3a. Then, rotate the pin 5c clockwise in FIG. 1 to open the end 7h of the long hole 7c formed in the base plate 7a of the rotating body
(first engaging portion) and rotates this rotating body 7 until the parking brake is activated, and then releases the thumb from the button 31 to maintain the brake activated state. At this time, the end 7i (second engaging portion) of the elongated hole 7d formed in the complementary plate 7b of the rotating body 7 is connected to the pin 8d.
It disengages and rotates clockwise so that it does not interfere with the manual operation described above. To release the brake operating state, grip the grip portion 5b with your hand again, press the release button 31 with your thumb, release the ratchet, and then push the operating lever 5 down to its original position.

When operating the parking brake by the actuator 9 without manual operation, turn the parking brake operating switch (not shown) installed on the instrument panel in the operating direction, and the motor of the actuator 9 operates the screw rod. 1
2 in the forward direction, and the pin 11 screwed into the threaded rod 12 is rotated clockwise in FIG. 2), and the rotating body 7 is rotated until the parking brake is activated. The operating state is ensured by checking the torque limiter built into the motor and automatically stopping the motor, or by returning the operating switch to the neutral position after checking the parking brake operation indicator lamp (not shown) on the instrument panel. The pin 11 and threaded rod 12 of the auxiliary mechanism 10 also perform a locking action to keep the parking brake in the activated state. pin 11
Since the pin moves linearly along the threaded rod 12, the long hole 8 for holding the pin is formed so as not to interfere with the rotation of the actuating body 8.
d in the radial direction. At the same time, as the rotating body 7 rotates clockwise, the engagement between the end 7h (first engaging portion) of the elongated hole 7c and the pin 5c is released, so that there is no interference with the actuator operation. To release the brake operating state, turn the operation switch in the release direction to rotate the motor in the opposite direction and release pin 11.
Rotate counterclockwise to return.

<Second Embodiment> As shown in FIG. 4, the vehicle parking brake device 2 of this embodiment is different from that of the first embodiment in that the rotation of the motor of the actuator 9 is matched with the rotation of the actuating body 8. The only difference is the structure of the converting auxiliary mechanism 20, and the other components are the same as those used in the first embodiment.

The auxiliary mechanism 20 of this embodiment is the output shaft 9 of the motor.
A universal joint 21 has an input end 21a connected to the input end 21a and an output end 21b integrally connected to the threaded rod 22; When the pin 11 rotates together with the actuator 8, the displacement with respect to the rotation axis of the actuator 9 is absorbed by the universal joint 21. The elongated hole 8d formed in the actuating body 8 in the embodiment can be replaced with a circular hole 8f.

The method of operating the device 2 of this second embodiment is the same as that of the first embodiment, and a description thereof will be omitted.

(Effects of the invention) As described above, according to the parking brake device for a vehicle of the invention, the rotating body for attaching the parking cable and the actuating body driven by the actuator are rotated on the spindle of the lever for manually operating the parking brake. Since it is pivoted so that it can move freely and the operation of the operating lever and the rotation of the actuating body are independently transmitted to the rotating body, manual operation and power operation can be achieved with a simple configuration, and the device is compact. It is possible to aim for

[Brief explanation of the drawing]

Fig. 1 is an overall front view of the first embodiment of the parking brake device for a vehicle of the present invention, Fig. 2 is a plan view of the first embodiment with the actuator and auxiliary mechanism removed, and Fig. 3 is the first embodiment. An exploded perspective view of the main parts of the example,
FIG. 4 is a front view of the second embodiment. 1, 2...Vehicle parking brake device, 3
... Bracket, 4 ... Support shaft, 5 ... Operation lever, 5c ... Pin, 6 ... Brake operation member, 7
...Rotating body, 7c, 7d...Long hole, 7h, 7i...
... End of elongated hole, 8 ... Operating body, 8e ... Pin, 9
...actuator, 21...universal joint.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A parking brake operation lever rotatably supported on the vehicle body via a support shaft, and a lever rotatably supported on the support shaft of this operation lever. a moving body; a brake operating member having one end connected to the rotating body and the other end connected to a brake member of a wheel; and an actuating body rotatably supported on the support shaft on the same axis as the rotating body. , an actuator that is provided on the vehicle body and rotates the actuating body about the support shaft; and a first protrusion that is provided on either the operating lever or the rotating body and protrudes toward the other opposing side. A pin portion is provided on the other of the operating lever and the rotating body, and when the operating lever is operated in the brake operating direction, the first protruding pin portion engages to rotate the rotating body in the brake operating direction. a first engaging portion; a second engaging portion provided on either one of the operating body and the rotating body and protruding toward the other opposing side;
a protruding pin portion; provided on the other of the operating body and the rotating body;
a second engaging portion that engages the second protruding pin portion when the actuating body rotates in the brake operating direction due to the actuation of the actuator to rotate the rotating body in the brake operating direction; Features: Parking brake device for vehicles. (2) The parking brake device for a vehicle according to claim 1, wherein the actuator rotates the operating body through a universal joint.