JPH027736Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for locking and releasing a foot-operated parking brake for an automobile.

In a foot-operated parking brake for automobiles, a mechanism is known in which the lock is released by depressing and rotating a pedal attached to a pedal lever. However, with such a known mechanism, there is an inconvenience in that the pedal lever must be continuously depressed in order to maintain the rotational state of the pedal tread until the pedal lever is completely returned to the released state.

The present invention was developed to solve the above-mentioned problems with the locking and releasing devices for foot-operated parking brakes. To provide a locking and releasing device for a foot-operated parking brake (hereinafter referred to as a locking and releasing device), in which the released state of the pedal lever is maintained as it is, so there is no need to continue pressing the foot, and an excessive burden is not placed on the foot. It is something.

In order to achieve the above object, the present invention has a structure in which a pedal is rotatably attached to the tip of a pedal lever, and a lock arm rotatably attached to the pedal lever is connected to the pedal via a connecting member. In the foot-operated parking brake device, the lock arm is locked to or released from a part of the vehicle body by depressing and rotating the pedal, and the connecting member between the pedal and the lock arm is a rod rotatably connected to the lock arm. It consists of only a pin at the end of the extended arm of the pedal that is loosely fitted into a long groove in the axial direction at the end of the rod, and is configured so that the rotation of the pedal is transmitted to the lock arm only on the side where the lock arm is rotated to the release position. , a holding mechanism consisting of a pin on the pedal lever, a pivot pin between the lock arm and the rod, and a tension spring between the pin and the pivot pin, for holding the lock arm in the locking position and the release position, respectively; and the pedal lever. The lock arm is characterized in that it is equipped with a reset mechanism consisting of a fixed sliding surface for rotating the lock arm from the non-depressed position to the locking position.

Embodiments of the present invention will be described with reference to the drawings. 1st
The figure shows the mechanism of the locking/unlocking device for the foot-operated parking brake according to the present invention.
is attached to rotate around a pivot 1 fixed to the vehicle body. 3 is a tension spring for returning the pedal lever 2 to the released state, and has one end fixed to the pedal lever 2 and the other end fixed to the vehicle body. 4 is a parking brake cable, and a brake (not shown) connected to this parking brake cable 4 is applied when the pedal lever 2 is in the state shown in the figure. A pivot pin 9 is fixed to the pedal lever 2, and a lock arm 8 is rotatably attached to the pivot pin 9.
The claw portion 20 at the tip of the rack 5 fixed to the vehicle body
The parking brake is configured to be locked when the parking brake engages one of the ratchet tooth rows 19 of the parking brake. A pivot pin 10 is fixed to the lock arm 8 on the tip side (closer to the claw portion 20) with respect to the pivot pin 9, and a rod 11 is attached to the lock arm 8 so as to rotate around the pivot pin 10. Concatenated. Further, a pedal 15 is rotatably attached to the tip of the pedal lever 2 via a pivot pin 14, and an arm 13 extends from the pedal 15.
A pin 12 attached to the tip of the rod 11 is loosely fitted into a long groove 16 bored at the tip of the rod 11. Further, the pedal lever 2 is provided with a protrusion 21 on the opposite side of the tension spring 3, and a pin 7 is fixed thereto.
A tension spring 6 is tensioned between the first pivot pin 10 and the first pivot pin 10.

A stopper 18 is provided on the pedal lever 2 to prevent the lock arm 8 from rotating beyond a certain amount, and a stopper 17 is configured such that the end surface 22 of the lock arm 8 comes into contact when the pedal lever 2 is completely returned to the released state. This fixed sliding surface 17 is fixed to the vehicle body.

The operation of the foot-operated parking brake engagement/disengagement device configured as described above will be explained.

In the illustrated device (with the lock arm 8 locked and the parking brake locked), when the top of the pedal 15 is depressed to unlock the parking brake, the pedal 15 rotates about the pivot pin 14, causing the arm 13 to rotate. is pivot pin 1
4 and pulling rod 11 downwardly through pin 12, lock arm 8 rotates clockwise around pivot pin 9. Therefore, the claw portion 20 at the tip of the lock arm 8 is
is disengaged from the ratchet tooth row 19, and the tension spring 6, which was located above the straight line connecting the pin 7 and the pivot pin 9, crosses this straight line and moves downward. 6 maintains the clockwise rotation state of the lock arm 8, and one side of the lock arm 8 remains in contact with the stopper 18 on the pedal lever 2 unless an external force is applied.

In this state, even if the lower part of the pedal 15 is depressed, the arm 13 rotates as the pedal 15 rotates, but the pin 12 at the tip of the arm 13 is not connected to the rod 11.
Since the rod 11 only slides in the long groove 16 of the rod 11, the rod 11 does not move and the lock arm 8 is not rotated counterclockwise to return to the original locked state.

When the pedal lever 2 is pulled by the tension spring 3 and returns to the fully released state, the end surface 22 of the lock arm 8 comes into contact with the fixed sliding surface 17 fixed to the vehicle body, and the lock arm 8 is therefore rotated counterclockwise. , the tension spring 6 is again connected to the pin 7
and the pivot pin 9, move upward and return to the position shown in the figure. In this state, when the lower part of the pedal 15 is depressed, the pedal lever 2 is rotated clockwise around the pivot 1 and the lock arm 8 is rotated.
The parking brake can be applied by engaging the rack 5 and locking the vehicle.

As explained above, the present invention has a mechanism that holds the lock arm in the locking position and the release position, so in order to release the parking brake in the locked state, the pedal lever is locked by depressing the pedal. Once the parking brake is released, there is no need to continue depressing the pedal to maintain this state. This has the effect that this state can be easily maintained even when locked. In addition, it is equipped with a reset mechanism that rotates the lock arm to the locking position when the pedal lever is in the non-depressed position, so when the pedal lever is completely released, the lock arm returns to the lockable state and the next pedal lever is activated. The parking brake can be locked by pressing the button.

Furthermore, in the present invention, the connecting member that connects the pedal and the lock arm consists only of a rod rotatably connected to the lock arm and a pin on the pedal side that loosely fits into a long groove at the tip of the rod. , compared to a structure in which an elastic member is interposed in this connecting member, there is no need to adjust the elastic force of this elastic member depending on when the pedal is locked and when the pedal is unlocked, and the lock arm can be easily rotated to the release position. The rotation of the pedal can be transmitted to the lock arm only on the side where the lock arm is turned.

[Brief explanation of the drawing]

FIG. 1 shows the mechanism of an embodiment of the present invention. 1... Pivot, 2... Pedal lever, 5... Rack, 6... Tension spring, 7... Pin, 8...
... Lock arm, 9, 10, 14 ... Pivot pin,
11... Rod, 12... Pin, 13... Arm, 15... Pedal, 16... Long groove, 17... Fixed smooth surface.

Claims (1)

[Scope of utility model registration request] A pedal is rotatably attached to the tip of a pedal lever, and a lock arm rotatably attached to the pedal lever is connected to the pedal via a connecting member, and when the pedal is depressed and rotated, the lock arm is attached to a part of the vehicle body. In a foot-operated parking brake device configured to lock or release, the connecting member between the pedal 15 and the lock arm 8 is a rod 11 rotatably connected to the lock arm 8 and a long groove 16 in the axial direction at the tip of the rod 11. Pedal 15 loosely fitted to
It is configured so that the rotation of the pedal 15 is transmitted to the lock arm 8 only on the side where the lock arm 8 is rotated to the release position, and the lock arm 8 is rotated to the lock position and the release position. A holding mechanism consisting of a pin 7 on the pedal lever 2, a pivot pin 10 between the lock arm 8 and the rod 11, and a tension spring 6 between the pin 7 and the pivot pin 10 for holding the pedal lever 2, respectively. A foot-operated parking brake engagement/disengagement mechanism comprising a reset mechanism consisting of a fixed sliding surface 17 for rotating a lock arm 8 from a non-depression position to a locking position.