JPH0211243Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a release device for a foot-operated parking brake, and is devised to improve safety by preventing erroneous operation of the foot-operated parking brake.

In addition to the general lever type, there are also foot-operated types of parking brakes for automobiles. This foot-operated brake is operated by the driver stepping on a parking brake pedal provided in front of the floor of the driver's seat, similar to the pedals in a car.

FIG. 1 is an explanatory diagram conceptually showing a foot-operated parking brake according to the prior art. As shown in the figure, when the parking brake pedal 1 is depressed, the parking brake pedal 1 is locked in the depressed position by a locking mechanism, and the operation of the brake is maintained. When releasing the brake, the lock mechanism is released via the cable 3 by pulling up the release knob 5, and the parking brake pedal 1 is returned to its original position.

By the way, since the release knob 5 is usually installed in the center console part 7, the operability is very good, but as mentioned above, if the parking brake is released by simply pulling up the release knob 5, it may cause mischief by children. This leads to a situation where the parking brake is easily released, which has the drawback of causing an unexpected accident.

SUMMARY OF THE INVENTION In view of the above drawbacks of the prior art, it is an object of the present invention to provide a release device that does not easily release a foot-operated parking brake, thereby improving safety.

The structure of the present invention that achieves this purpose includes a parking brake pedal provided in the front part of the floor of the driver's seat, and a lock mechanism that holds the parking brake in an activated state when the parking brake pedal is depressed. A foot-operated parking brake release device having a horizontal groove extending substantially horizontally and a vertical groove continuously extending upward substantially vertically from the front end of the horizontal groove, and of the horizontal groove, the horizontal groove and the vertical groove are separated from each other. A narrowing part is formed just before the intersection of L.
a guide plate having a letter-shaped guide groove; a pin that is fitted into the guide groove and can move along the guide groove passing through the narrowed portion with greater resistance than other portions; The pin is fixed to the lower end of the lever and extends upward, and one end of the lever is locked to the lower end of the lever, and the other end is locked to a fixed part such as a frame, so that the pin is inserted into the horizontal groove. a return spring that applies a spring force to the lever so as to be located at the rear end; a fulcrum that the rear end side of the horizontal groove can abut in the central portion of the lever; and a fulcrum that allows the lever to resist the spring force of the return spring. A cable connects the locking mechanism and the pin so that the cable rotates about the fulcrum and is pulled upward to release the locking mechanism by being pulled by the pin that moves along the horizontal groove and the vertical groove. It is characterized by having the following.

Embodiments of the present invention will be described in detail below based on the drawings. As shown in FIGS. 2a to 2c and 3, two vertically facing brackets 11 are fixed to a frame 12 below the center console portion 7. As shown in FIGS. The guide plate 13 is brought into contact with the outer surface of the bracket 11 by bolts 15a and nuts 15b that pass through spacers 14a, 14b, 14c, and 14d that maintain the distance between the brackets 11 and connect the brackets 11. They are each fixed.
As a result, the guide plate 13 also has a vertical surface and faces each other with the bracket 11 in between.
is formed. This guide groove 13a includes a horizontal groove 13b extending substantially horizontally and a vertical groove 13 continuously extending upward substantially vertically from the front end of the horizontal groove 13b.
It is L-shaped, consisting of c. At this time, as shown in FIG. 4 in which the guide groove 13a is extracted and enlarged, the horizontal groove 13a is
3a and the vertical groove 13b.
d is formed. A release knob 17 is fixed to the upper end of the lever 16, and a pin 18 is fixed to the lower end of the lever 16, so that both the brackets 11 and the spacer 1 are fixed.
It is inserted into the space surrounded by 4a to 14d.
One end of the cable 3 is connected to a locking mechanism (not shown) of a foot-operated parking brake, and the other end of the cable 3 is connected to the pin 18, and is fitted into the guide grooves 13a of both guide plates 13. The other end of the cable 3 is shown in FIGS. 2a to 2c. Cable 3 as shown in the figure
To be more precise, the inner cable is connected to the pin 18, and the outer cable is fixed to the frame 12, but when simply referring to the cable 3, it refers to the inner cable. Furthermore, one end of a return spring 19 is locked to the lower end of the lever 16.
Further, the other end of this return spring 19 is locked to a frame 12 which is a fixed part. Thus, the pin 18 is normally moved to the lower end of the guide groove 13a, that is, the horizontal groove 13 by the spring force of the return spring 19.
It is located at the rear end of b. At this time, the central portion of the lever 16 is regulated in position by the front end side (left side in FIG. 2) of the horizontal groove 13b coming into contact with the spacer 14a. This is the state shown in FIG. 2a.

When unlocking a foot-operated parking brake having such a release lever to release the brake, press the release knob 1 from the state shown in Fig. 2a.
Rotate 7 clockwise. As a result, the lever 16 rotates clockwise using the spacer 14d as a fulcrum against the spring force of the return spring 19. That is, in this embodiment, the spacer 14d
However, in the central portion of the lever 16, the rear end side (the right side in FIG. 2) of the horizontal groove 13b becomes a fulcrum that can be abutted. Along with this, the pin 18 moves approximately horizontally to the left in the figure along the horizontal groove 13b of the guide groove 13a,
When passing through the narrowed portion 13d, it overcomes the resistance caused by contact with the narrowed portion 13d and reaches the intersection of the horizontal groove 13b and the vertical groove 13c. This state is shown in FIG. 2b. Next, from the state shown in the figure, release knob 17
pull upwards. As a result, the lever 16
As a result, the pin 18 moves upward substantially vertically along the vertical groove 13c of the guide groove 13a and reaches the upper end of the guide groove 13a. This state is shown in FIG. 2c. When the pin 18 is in the state shown in FIG. 2c, the foot-operated parking brake is unlocked via the cable 3 connected to the pin 18. After that, when you release your hand from the release knob 17, the lever 16 and pin 18 return to their original state, that is, the state shown in FIG. 2a, by the return spring 12 and the return spring (not shown) of the parking brake pedal, and the brake is released. Ru.

As specifically explained above with the examples,
According to the present invention, the foot-operated parking brake is unlocked by moving the release knob horizontally and then vertically, that is, by operating it in two directions.This prevents incorrect operation of the parking brake and prevents accidents caused by releasing the brake. accidents can be prevented.

Furthermore, according to the present invention, when the pin reaches the intersection of the horizontal groove and the vertical groove, it is necessary to pass through a constriction that acts as a resistance to movement, so an operating force above a certain level is required to release the brake. This also prevents erroneous operations.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram conceptually showing a foot-operated parking brake according to the prior art, FIGS. 2a to 2c are front views showing an embodiment of the present invention, and FIG.
FIG. 4 is an enlarged view showing the guide groove extracted and enlarged. In the drawing, 1 is the parking brake pedal, 3
is the cable, 7 is the center console part, 12
is a frame, 13 is a guide plate, 13a is a guide groove, 13b is a horizontal groove, 13c is a vertical groove, 13
14d is a spacer (fulcrum), 16 is a lever, 17 is a release knob, 18 is a pin, and 19 is a return spring.

Claims (1)

[Scope of claim for utility model registration] A foot-operated parking brake pedal that has a parking brake pedal installed in the front of the floor of the driver's seat and a locking mechanism that holds the parking brake in an activated state when the parking brake pedal is depressed. The parking brake release device has a horizontal groove extending substantially horizontally, a vertical groove continuously extending upward substantially vertically from the front end of the horizontal groove, and a part of the horizontal groove at the intersection of the horizontal groove and the vertical groove. L where a narrowing part is formed just before
a guide plate having a letter-shaped guide groove; a pin that is fitted into the guide groove and can move along the guide groove passing through the narrowed portion with greater resistance than other portions; The pin is fixed to the lower end of the lever and extends upward, and one end of the lever is locked to the lower end of the lever, and the other end is locked to a fixed part such as a frame, so that the pin is inserted into the horizontal groove. a return spring that applies a spring force to the lever so as to be located at the rear end; a fulcrum in the center of the lever that the rear end side of the horizontal groove can abut; and a fulcrum that allows the lever to resist the spring force of the return spring. A cable connects the locking mechanism and the pin so that the cable rotates about the fulcrum and is pulled upward to release the locking mechanism by being pulled by the pin that moves along the horizontal groove and the vertical groove. A foot-operated parking brake release device comprising: