JPH0414295Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is a parking brake system for automobiles,
In particular, it relates to a device configured to allow both manual operation and power operation using an actuator such as a motor.

(Prior Art) Conventionally, as a parking brake device for an automobile configured to be compatible with manual operation and power operation using an actuator such as a motor, for example, as described in Japanese Utility Model Application No. 58-75156, A base is movably provided on a guardrail provided on the vehicle body, a motor is attached to the base and is rotatable in forward and reverse directions; A brake lever and an equalizer comprising a shaft-like screw member that rotates in the opposite direction, a nut member screwed onto the screw member so as to be able to move forward and backward, and a control means that controls forward and reverse rotation and stopping of the motor, and that constitute a parking brake device. It is known that one end of a wire connected to the brake lever is connected to the base, and one end of a wire connected to the equalizer is connected to the nut member.

However, such a parking brake device for an automobile has a complicated structure with a large number of assembly parts including a base for power operation, a motor, screw members, nut members, etc. Since it has a large base to support the nut member and move in conjunction with the lever, there has been a problem in that it is disadvantageous in terms of miniaturization.

(Purpose of the invention) An object of the invention is to provide a parking brake device for an automobile with a simple configuration, which is capable of automatic braking and brake release, and which is also capable of manual braking and brake release as in the past.

(Structure of the invention) The parking brake device for an automobile according to the invention includes a parking brake operating lever rotatably attached to a bracket provided on the vehicle body;
An actuating body is connected to a wire connected to a wheel brake member that is rotatably attached to the operating lever, and the wire is driven by rotating the actuating body that is fixedly attached to the parking brake operating lever. an actuator that can be driven between a braking state in which the wheels are braked and a release state in which the braking is released; an engaging portion formed on the actuating body; and a parking brake operating lever that is engageable with the engaging portion. and an engaging member, and the engaging portion of the actuating body and the engaging member are in a disengaged state when the actuating body is rotated in a braking action direction by the actuator, allowing rotation of the actuating body. , and an arcuate slit and a pin member inserted into the arcuate slit, respectively, so that when the parking brake operating lever is rotated in the braking operation direction, it is in an engaged state and the actuating body is rotated in the braking operation direction. It is characterized by being configured.

(Function) In the parking brake device for an automobile according to the present invention, when the parking brake device is brought into a braking state by automatic operation, when the actuator is actuated to drive the actuating body in the direction of braking, the arc-shaped slit of the actuating body is activated. The engagement between the engaging portion consisting of the arcuate slit and the engaging member provided on the operating lever inserted into the arcuate slit is released and the actuating body is allowed to rotate, so the actuating body rotates in the direction of braking operation. and enters a braking state. At this time, the operating lever does not rotate and maintains its original position. To release this braking state, the actuator may be operated in the opposite direction.

On the other hand, when the parking brake device is put into the braking state by manual operation, when the operating lever is rotated in the direction that drives the actuating body in the direction of braking operation,
The engaging portion of the actuating body and the engaging member engage with each other to rotate the actuating body in the braking action direction, resulting in a braking state. To release this braking state, rotate the operating lever in the opposite direction to the above, that is, toward the original position, and the actuating body will move in the opposite direction while the engaging part and the engaging member remain engaged. The brake is released.

(Effects of the invention) According to the parking brake device for an automobile according to the present invention, an actuating body is rotatably attached to the parking brake operating lever, and an actuator for rotatably driving the actuating body is fixed to the operating lever, An engaging portion is formed on the actuating body, and an engaging member that engages with the engaging portion is provided on the operating lever, and the engaging portion and the engaging member of the actuating body are arranged so that the actuating body is moved in the braking direction by the actuator. When the parking brake operating lever is rotated, it is in a disengaged state, allowing the operating body to rotate, and when the parking brake operating lever is rotated in the direction of braking action, it is in an engaged state, allowing the operating body to rotate in the direction of braking action. Since the structure is composed of an arcuate slit and a pin member inserted into the arcuate slit, the actuator can automatically brake and release the brake, and the operating lever can perform manual braking and braking. It is now possible to cancel.

In particular, by providing an engaging portion and an engaging member, the operating lever is held in its original position (tilted position) during automatic braking, making it possible to automatically release the brake via the actuator, and also automatically Since the operating lever does not automatically rotate during braking, there is no discomfort to the driver. Further, manual braking and brake release are possible in exactly the same way as conventional manually operated parking brake devices.

In addition, since the operating body and the actuator are provided on the operating lever, and the operating lever is attached to the bracket on the vehicle body side, the parking brake device can be easily assembled to the vehicle body.

(Example) Hereinafter, an example of the present invention will be described based on the drawings. As shown in Figure 1, a center console box C is installed inside the vehicle, for example next to the driver's seat, to manually operate the parking brake.
A bracket 1 is attached to the vehicle body, and a parking brake operating lever 3 is rotatably supported by the bracket 1 via a support shaft 2. Reference numeral 4 designates an operating handle provided at one end of the operating lever 3 that projects from the center console box C into the vehicle interior.

As shown in FIG. 2, the operating lever 3 includes:
A disc-shaped actuating body 5 is rotatably supported via the support shaft 2 around the rotation axis of the lever. A wire winding groove 6 is formed in the lower half of the outer peripheral edge of the operating body 5, and a wire locking portion 7 is formed at the clockwise end of the wire winding groove 6. An engaging portion 9 at one end of a wire 8 connected to a brake member of a wheel is fitted into and locked into the wire locking portion 7. The wire 8 is wound into the wire winding groove 6 of the actuating body 5 by rotation of the actuating body 5, and is let out from there.

The other end 10 of the operating lever 3 extends toward the opposite side of the handle 4 with respect to the support shaft 2, and an actuator 12 for power operation is attached to the other end 10 via a mounting frame 11 on the operating lever 3. It is mounted eccentrically on the side of the The actuator 12 is composed of an electric motor, and a worm shaft 14 is coaxially connected to an output shaft 13 of the actuator 12 .

The tip of the worm shaft 14 is rotatably supported on the side surface of the operating lever 3 via a bearing 15 to prevent the axial center from wobbling. The above operating body 5
A worm foil portion 16 that engages with the worm shaft 14 is provided at about one-third of the upper portion of the outer periphery of the worm wheel 16.
is formed.

In order to regulate the swing angle of the actuating body 5 with respect to the operating lever 3, an arcuate slit 17 (corresponding to an engaging portion) having a center of curvature around the support shaft 2 is formed in the actuating body 5. A pin member 18 (hereinafter simply referred to as a pin, which corresponds to an engaging member) is implanted in the lever 3 and slidably inserted into the arc-shaped slit 17. This pin 18
is provided at a position where the operating lever 3 is pushed down to the floor side and the wire 8 is received at the end of the arcuate slit 17 in the braking operation direction (direction of arrow B) when the wire 8 is extended to the longest extent and is in a brake release state. There is.

Next, the operation of the parking brake device for an automobile configured as described above will be explained.

When releasing the parking brake,
As shown in FIG. 2, the operating lever 3 is pushed down to the floor side of the vehicle compartment, and the actuating body 5 is positioned at the brake release position where the wire 8 is extended. At this time, since the pin 18 is brought into contact with the end of the arcuate slit 17 in the wire winding direction (direction of arrow B),
The tension of the wire 8 does not cause the actuating body 5 to rotate beyond its position in the wire feeding direction (direction opposite to arrow B).

When applying the parking brake by power operation, as shown in FIG. 3, the actuator 12 is operated to rotate the actuating body 5 in the wire winding direction (direction of arrow B), and the wire 8 is wound around the actuating body 5. The brake member is tightened toward the brake activation side by tightening the brake member.

The actuator 12 operates when the pin 18 is brought into contact with the end of the arcuate slit 17 in the brake release direction (direction opposite to arrow B) or when the parking brake is fully tightened so that the tension of the wire 8 reaches a predetermined value. When the load on the actuator 12 exceeds a predetermined value, the actuator 12 may be automatically stopped.

When the actuator 12 stops, rotation of the worm wheel portion 16 is prohibited due to the engagement between the worm shaft and the worm wheel portion 16, and the actuating body 5
rotation with respect to the operating lever 3 is prevented, and the actuating body 5 is held in the braking position.

Incidentally, when the parking brake is fully applied by power operation, the wire 8 has already been wound around the operating body 5 for the longest time, and when fully tensioned, the manual operation lever 3 is further moved to the brake operation side. It cannot be raised and operated.

When releasing the parking brake by power operation, move the lever 3 for manual operation toward the floor, operate the actuator 12 in the opposite direction to the brake operation, and move the actuator 5 in the wire feeding direction (opposite to arrow B). direction). This movement of the actuator 12 and the actuating body 5 in the brake release direction is caused by the pin 18 being brought into contact with the end of the arcuate slit 17 in the braking operation direction, that is, the wire winding direction, and a load of more than a predetermined value is applied to the actuator 12. It would be better if it could be made to stop automatically when it starts running.

When applying the parking brake by manual operation, the operating lever 3 may be raised from the floor side, as shown in FIG. 4. Rotation of the actuating body 5 with respect to the operating lever 3 is activated because rotation of the worm wheel portion 16 is prevented by the worm shaft 14 and by the pin 18 coming into contact with the one end of the arcuate slit 17. The body 5 rotates in the braking operation direction (in the direction of arrow B) in conjunction with the operation lever 3, and the wire 8 is wound up. In this case, the pin 18 is inserted into the arcuate slit 1
Since the actuating body 5 is interlocked with the operating lever 3 by receiving the end of the worm member 7 in the wire winding direction, the force acting on the worm interlocking mechanisms 14 and 16 is reduced.

When the parking brake is fully applied by manual operation, the wire 8 is fully tensioned, so even if the actuator 12 attempts to rotate the actuator 5 in the direction of the braking operation, the actuator 12 will immediately respond to the load exceeding the predetermined value. It will be automatically stopped. Of course, since the pin 18 receives the end of the arcuate slit 17 on the braking operation direction side, while the parking brake is applied by manual operation, the actuating body 5 is moved in the brake release direction (opposite to arrow B) by power operation. direction) cannot be rotated.

When releasing the parking brake by manual operation, the operating lever 3 may be tilted toward the floor. The actuating body 5 is returned to the brake release position in conjunction with the operating lever 3, and the wire 8 is let out from the actuating body 5.

In this manner, the parking brake device for an automobile described above successfully achieves both manual operation and power operation of the parking brake.

Moreover, there is a control lever 3 for manual operation,
A bracket 1 includes an actuator 12, a worm shaft 14, and an operating body 5 necessary for power operation.
Since it is supported by the holder, the installation work to the vehicle body is simple and easy, and the structure is simple and compact.

Further, the actuator 12 is not limited to a rotary drive device such as a motor, but may be a linear drive device such as a cylinder whose drive source is a solenoid, exhaust gas, pressure oil, electricity, or the like. In this case, actuator 12
It is conceivable to interlock and connect the disc-shaped actuating body 5 with a rack and pinion.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is an overall perspective view, Fig. 2 is a partial longitudinal side view in the brake release state, Fig. 3 is a side view when the brake is put into the brake state by power operation, and Fig. 3 is a side view when the brake is released by power operation. FIG. 4 is a side view when the brake is brought into a braking state by manual operation. 1...Bracket, 3...Operation lever, 12...
... actuator, 5 ... operating body, 13 ... wire, 14 ... worm shaft, 16 ... worm wheel portion, 17 ... arcuate slit, 18 ... pin member.

Claims (1)

[Claim for Utility Model Registration] A parking brake operating lever rotatably attached to a bracket provided on the vehicle body is connected to a wire connected to a brake member of a wheel rotatably attached to the operating lever. The actuating body is fixed to the parking brake operating lever, and by rotating the actuating body, the wire is driven, and the wire can be driven between a braking state in which the wheels are braked and a release state in which the braking is released. An actuator, an engaging portion formed on the actuating body, and an engaging member provided on the parking brake operating lever so as to be able to engage with the engaging portion, the engaging portion of the actuating body and the engaging member. means that when the actuator is rotated in the direction of braking action by the actuator, it is in a disengaged state, allowing rotation of the actuator, and when the parking brake operating lever is rotated in the direction of braking action, it is in an engaged state. What is claimed is: 1. A parking brake device for a motor vehicle, comprising an arcuate slit and a pin member inserted into the arcuate slit so as to rotate an actuating member in a braking action direction.