JPH05330402A - Retainer in parking brake for automobile - Google Patents

Abstract

PURPOSE:To prevent an automobile from being moved by an illegal means and to prevent movement even if a transmission is in the neutral state by providing a lock means for enabling a push rod to move backward only when a rotor of an ignition key cylinder is put in an accessory position. CONSTITUTION:A lock means 22 is provided for enabling a push rod 9 to move backward only when a rotor 21 of an ignition key cylinder 20 is put in an accessory position ACC. That is, when the rotor 21 of the ignition key cylinder 20 is put in the accessary position ACC, a lock cam 36 is forced to start moving downward by the energizing force of a spring, and when one end 36a of the lock cam is put in a position not corresponding to the position of the rear face 33c of the rear end part 33 of a push lock rod 33, the push lock rod 33 starts moving backward. Thus, the push rod 9 of a retainer 1 in a parking brake can be operated to move backward, that is, the brake lock can be released.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a holding device for an automobile parking brake.

[0002]

2. Description of the Related Art As a technique of this kind, there is, for example, one shown in FIG. 9 (see Japanese Utility Model Laid-Open No. 54-163425). That is, the holding device 1 in the parking brake for an automobile includes an operating lever 5 rotatably supported by a ratchet plate 3 fixed to a floor panel 2 side, which is a "vehicle body", via a first pin 4, and the operating lever. Brake cable 7 for operating a tire brake (not shown) by being connected to the vehicle 5 via the second pin 6 and being pulled.
A push pin 9 provided on the operation lever 5 and capable of being moved backward by the operation knob 8; and a third pin for releasing the engagement of the ratchet 10 of the ratchet plate 3 by the backward movement of the push rod 9. A claw 12 rotatably supported on the operation lever 5 is provided.

[0003]

However, in such a holding device 1 for a parking brake for an automobile, whether or not the ignition key is inserted in the ignition key cylinder when releasing the parking brake is determined. It has nothing to do with it. For this reason, in the case of a vehicle with a manual transmission, even if the ignition key is not inserted in the ignition key cylinder, the vehicle will run if the engine is started and the parking brake is released by some means. Since this is possible, the car could be stolen in such a situation. Further, even if there is no person who can drive, the parking brake can be easily released if, for example, a child or the like can operate the operation knob 8 of the operation lever 5, and in such a state, the transmission shifts to the neutral position. In this state, the car may start moving naturally due to the inclination of the road.

For this reason, in the former case, an expensive anti-theft means has been proposed for preventing the vehicle from being moved by an unauthorized means. In the latter case, there is proposed an expensive device in which the ignition key cannot be pulled out from the ignition key cylinder when the transmission is shifted to the neutral position.

Therefore, it is an object of the present invention to provide at low cost a means for preventing movement of an automobile by an illegal means and a means for preventing movement of an automobile even when the transmission is in a neutral shift. It is a thing.

[0006]

As a holding device for a vehicle parking brake according to the present invention, there is provided a locking means for enabling the backward movement operation of the push rod only when the rotor of the ignition key cylinder is in the accessory position. It is characterized by. The locking means covers a rotary lever rotatably supported on the vehicle body side, an inner cable having one end connected to the rotary lever and the other end connected to an ignition key cylinder, and the inner cable. An ignition cable formed of an outer cable supported on the vehicle body side, a push lock rod extending rearward from the push rod and having a rear end portion slidably engaged with the rotary lever, and the push lock rod Is rotatably supported at a position on the vehicle body side on the axis of, and one of them is arranged at a position near the rear portion of the rear end portion of the push lock rod to prevent the push lock rod from retracting, and the other is A lock cam connected to the rotary lever and the shaft supporting portion of the rotary lever on the vehicle body side are wound around the ignition key. When the rotor of the rotor is in the locked position, the other end of the inner cable interferes with the rotor, but the urging force is such that the position of the rotary lever cannot be changed, and when the rotor of the ignition key cylinder is in the accessory position, the inner cable is The other end of the lock cam is moved to the ignition key cylinder side to rotate the rotation lever by one end of the inner cable, and the rotation lever is always attached so that one of the lock cams is retracted to the outside of the push lock rod axis. It consists of a biased spring and a spring.

[0007]

[Operation] According to this structure, only when the rotor of the ignition key cylinder is in the accessory position, the push rod of the holding device in the parking brake can be moved backward, that is, the brake lock can be released.
In other words, by pulling out the ignition key from the ignition key cylinder, the operating lever can be moved in the direction in which the brake works, but the push rod cannot be retracted, so the brake cannot be released. The device can be made available to the ready-made ignition key cylinder, push-lock rod, and vehicle body by an inexpensive connection method.

[0008]

An embodiment of the present invention will be described in detail below with reference to the drawings. 1 to 8, a holding device 1 in an automobile parking brake is a floor panel 2 which is a "vehicle body".
A tire brake that is rotatably supported by a ratchet plate 3 fixed to the side by a first pin 4 and is connected to and pulled by the operation lever 5 by a second pin 6. A brake cable 7 for operating (not shown), a push rod 9 provided on the operation lever 5 and capable of being moved backward by an operation knob 8, and a ratchet 10 of the ratchet plate 3 due to the backward movement of the push rod 9. To disengage the third
The main point is that the claw 12 rotatably supported by the operation lever 5 via the pin 11 is provided, which is the same as the conventional one. Reference numeral 8a is a grip portion of the operation lever 5.

And, as a feature of the present invention,
The rotor 21 of the ignition key cylinder 20 is shown in FIG.
As shown in (a), the lock means 22 is provided to enable the backward movement operation of the push rod 9 only when the push rod 9 is in the accessory position ACC. This locking means 22
Is composed of a rotary lever 25, a spring 30, an ignition cable 32, a push lock rod 33, and a lock cam 36.

The rotary lever 25 is welded to the ratchet plate 3 fixed to the floor panel 2 side which is the "body" by welding S.
W and is behind the ratchet plate 3 (see FIGS. 1 and 2).
Rear end portion 2 of the base bracket 23 protruding substantially to the right)
It is rotatably supported by the fourth pin 24 of the base 41 fixed to 3a and formed in a bell crank shape.
The ignition cable 32 includes an inner cable 28 and an outer cable 31.

The inner cable 28 has one end 28a.
Is the fifth protruding from the bent portion 26 of the rotary lever 25.
The pin 27 is connected via a snap pin 29, and the other end 28b is connected to the ignition key cylinder 20. The outer cable 31 covers the middle of the inner cable 28 and is supported on the side of the tongue 3a formed by bending the ratchet plate 3.

The push lock rod 33 extends rearward in the direction of the axis 9a of the push rod 9, and the rear end portion 33a thereof is a free end portion 34 of the rotary lever 25.
Is slidably engaged with the arc-shaped inscribed surface 34a.

The lock cam 36 is rotatably supported by a sixth pin 35 projecting at a position of the base 41 on the axis 33b of the push lock rod 33, while one 36a is supported by the push lock rod 33. Rear end 33
The push lock rod 3 is located close to the rear surface 33c of a.
The third pin 36 is disposed at a position for preventing the retreat of the third lever 3, and the other 36b is inserted through a seventh pin 38 which is freely movable in an elongated hole 37 formed at a position between the fourth pin 24 and the free end 34 of the rotary lever 25. It is connected.

The spring 30 has a coil shape,
It is wound around the fourth pin 24 of the rotary lever 25.
The spring 30 causes the rotor 21 to interfere with the other end 28b of the inner cable 28 when the rotor 21 of the ignition key cylinder 20 is in the lock position LOCK as shown in FIG. 1B. When the rotor 21 of the ignition key cylinder 20 is in the accessory position ACC as shown in FIG. 1 (a), the other end 28b of the inner cable 28 is connected to the ignition key cylinder. The one end portion 28a of the inner cable 28 rotates the rotary lever 25 by moving the inner cable 28 to move the one end 36a of the lock cam 36 to the outside of the axis 33b of the push lock rod 33, and the rotary lever 25 is constantly urged. As one end 3
0a is locked to the eighth pin 39, and the other end 30b is locked to the base 40 side of the rotary lever 25.

According to this structure, when the rotor 21 of the ignition key cylinder 20 is in the lock position LOCK, as shown in FIG. 4, one end 28a of the inner cable 28 is connected to the bent portion 26 of the rotary lever 25.
Since the position of the more protruding fifth pin 27 does not move, the rear surface 33c of the rear end portion 33a of the push lock rod 33 does not move rearward due to the one side 36a of the lock cam 36. When the rotor 21 of the ignition key cylinder 20 is in the accessory position ACC, the biasing force of the spring 30 causes the lock cam 36 to start moving downward, as shown in FIG. The rear surface 33c of the end portion 33a does not move rearward due to the one side 36a of the lock cam 36. Next, from the state of FIG. 5, the force of the spring 30 causes the lock cam 36 to move downward as shown in FIG. 6, so that the one side 36a of the lock cam 36 is attached to the rear surface 33c of the rear end 33a of the push lock rod 33. When the position does not correspond to the position, the push lock rod 33 starts moving backward. Thus, as shown in FIGS. 7 and 8, the push lock rod 33 can be moved rearward, and the backward movement operation of the push rod 9 of the holding device 1 in the parking brake, that is, the brake lock can be released. In other words, by removing the ignition key (not shown) from the ignition key cylinder 20, the operating lever 5 can be moved in the direction in which the brake works, but the push rod 9 cannot be retracted, so the brake is released. Can not do it.

[0016]

As described above, according to the present invention, as a holding device for a parking brake for an automobile, a locking means that enables the backward moving operation of the push rod only when the rotor of the ignition key cylinder is at the accessory position. It is characterized by having. The locking means covers a rotary lever rotatably supported on the vehicle body side, an inner cable having one end connected to the rotary lever and the other end connected to an ignition key cylinder, and the inner cable. An ignition cable formed of an outer cable supported on the vehicle body side, a push lock rod extending rearward from the push rod and having a rear end portion slidably engaged with the rotary lever, and the push lock rod Is rotatably supported at a position on the vehicle body side on the axis of, and one of them is arranged at a position near the rear portion of the rear end portion of the push lock rod to prevent the push lock rod from retracting, and the other is A lock cam connected to the rotating lever and the ignition key is wound around the shaft supporting portion of the rotating lever on the vehicle body side. When the rotor of the rotor is in the lock position, the other end of the inner cable interferes with the rotor, but the urging force is such that the position of the rotary lever cannot be changed. The other end of the lock cam is moved to the ignition key cylinder side to rotate the rotation lever by one end of the inner cable, and the rotation lever is always attached so that one of the lock cams is retracted to the outside of the push lock rod axis. Since it is composed of a biased spring, only when the ignition key cylinder rotor is in the accessory position, it is possible to perform the backward movement operation of the push rod of the holding device in the parking brake, that is, the release of the brake lock.
In other words, by removing the ignition key from the ignition key cylinder, the operating lever can be moved in the direction in which the brake works, but the push rod cannot be retracted, so the practical effect that the brake cannot be released. Have.

[Brief description of drawings]

FIG. 1 is a schematic side view showing an embodiment of the present invention, (a)
FIG. 4B is a diagram showing a case where the rotor of the ignition key cylinder is in the accessory position, and FIG. 8B is a diagram showing a state where the rotor of the ignition key cylinder is in the lock position.

FIG. 2 is a side view showing an embodiment of the present invention.

FIG. 3 is an exploded perspective view of a locking means showing an embodiment of the present invention.

FIG. 4 is a first operation explanatory view of the locking means of FIG.

5 is a second operation explanatory view of the locking means of FIG. 3. FIG.

FIG. 6 is a third operation explanatory view of the locking means of FIG.

FIG. 7 is a fourth operation explanatory view of the locking means of FIG.

FIG. 8 is a fifth operation explanatory view of the locking means of FIG.

FIG. 9 is a side view corresponding to FIG. 1 of the related art.

[Explanation of symbols]

 1 Holding device for parking brake for automobile 2 Car body 3 Ratchet plate 5 Operating lever 7 Brake cable 8 Operating knob 9 Push rod 10 Ratchet 12 Claw 20 Ignition key cylinder 21 Rotor 22 Locking means 25 Rotating lever 28 Inner cable 28a One end of inner cable 28b The other end of the inner cable 30 Spring 31 Outer cable 32 Ignition cable 33 Push lock rod 33a Push lock rod rear end 33b Push lock rod axis 36 Lock cam

Claims (2)

[Claims] 1. An operating lever rotatably supported by a ratchet plate fixed to a vehicle body, a brake cable connected to the operating lever to operate a tire brake by being pulled, and the operating lever. In a parking brake including a pawl rotatably supported by an operation lever so as to release the engagement with the ratchet of the ratchet plate by a backward movement operation of a provided push rod, a rotor of an ignition key cylinder is an accessory. A holding device for a parking brake for an automobile, comprising a locking means capable of performing a backward movement operation of the push rod only when in a position. 2. The locking means includes a rotary lever rotatably supported on the vehicle body side, an inner cable and an inner cable having one end connected to the rotary lever and the other end connected to an ignition key cylinder. An ignition cable that is an outer cable that covers and is supported on the vehicle body side, a push rod that extends rearward from the push rod and has a rear end portion slidably engaged with the rotary lever, and the push lock rod. Is rotatably supported at a position on the vehicle body side on the axis of, and one of them is arranged at a position near the rear portion of the rear end portion of the push lock rod to prevent the push lock rod from retracting, and the other is A lock cam connected to the rotary lever, and a lock cam of the ignition key cylinder wound around the shaft supporting portion of the rotary lever on the vehicle body side. When the rotor is in the lock position, the other end of the inner cable interferes with the rotor, but the biasing force is such that the position of the rotary lever cannot be changed, and when the rotor of the ignition key cylinder is in the accessory position, the inner cable By moving the other end to the ignition key cylinder side, one end of the inner cable rotates the rotary lever to constantly urge the rotary lever to retract one of the lock cams out of the push lock rod axis. The holding device for a vehicle parking brake according to claim 1, comprising a spring and the spring.