JPH0810056Y2 - Operating device for parking brake - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a parking brake for an automobile, in which a cable connected to a brake is pulled by rotating an operating lever to operate the brake. Operation device.

[Conventional technology]

In the conventional device of this type, the cable connected to the brake can be pulled to operate the brake by pulling up the operation lever, and the operation lever is provided at the tip of the operation lever so as to be retractable. Push in the push button to disengage the claws provided in the operating lever from the ratchet teeth formed on the base plate fixed to the vehicle body, return the operating lever to its original fall position, loosen the cable, and operate the brake. It can be canceled.

[Problems to be solved by the device]

In the conventional device as described above, in the parking state in which the operation lever is pulled up and the brake is operated, the operation lever projects upward from the seat cushion, so that the luggage placed in the passenger seat is pushed from the driver's seat side. When the passenger is taken out or the driver and the occupant on the passenger seat side switch seats without going out of the vehicle, the operation lever protruding upward interferes.

Further, even if the driver tries to take a nap by lying down by using the entire front seat, the operation lever interferes with the operation, which is inconvenient.

The present invention provides a parking brake operating device capable of solving the above-mentioned problems of the conventional technique, improving the operation feeling of the operating lever, and stabilizing the holding of the operating lever. Is intended.

[Means for solving the problem]

To achieve the above object, a parking brake operating device of the present invention comprises a base plate (2) fixed to a vehicle body, an operating lever (4) pivotally attached to the base plate (2) by a shaft (5), and a base plate (2). 2) It is pivotally attached to a shaft (5) common to the operating lever (4) and has an arc-shaped centering on the shaft (5) and a gentle recess (7a) formed at an appropriate position at the edge. Formed at the edge of the base plate (2) and the intermediate lever (3) to which the end of the cable is attached, which is provided with an abutting surface (7) and which activates the brake (12) by pulling. The axis (5)
The ratchet tooth (6) having an arc shape centered on the center of the ratchet tooth (6) is pivotally attached to the intermediate lever (3) so that the ratchet tooth (6) can be engaged with and disengaged from the ratchet tooth (6), and is constantly urged in the direction of engaging the ratchet tooth (6). When the operating lever (4) is rotated in the upright direction, it comes into contact with the intermediate lever (3) and the intermediate lever (3), An engaging portion (17) capable of rotating the cable (12) in a pulling direction, and a retractable portion provided at the tip of the operating lever (4) and protruding by a biasing means (20). The push button (18) which is constantly urged is pivotally attached to the operation lever (4) and is connected to the push button (18) by the connecting rod (21), and the engaging portion (17) is connected to the intermediate lever (3). ), One end faces the claw (9) and the other end Opposite the abutment surface of the intermediate lever (3) (7), push button (18)
By pushing in, the one end pushes the pawl (9) in a direction to separate from the ratchet teeth (6), engages with one end of the contact surface (7), and the other end contacts the contact surface (7). The push button (1
When 8) is protruding, the other end is pressed against the contact surface (7) by the urging force of the urging means (20) of the push button (18), and one end is in contact with the claw (9) and the contact surface (7). A release lever (2 that can be placed in a normal position away from the surface (7)
3) and are provided.

[Action]

When the operating lever (4) is rotated in the upright direction from the lying state, the engaging portion (17) contacts the intermediate lever (3) and the intermediate lever (3) also rotates in the same direction. The pawl (9) pivoted on the intermediate lever (3) is moved by one tooth along the ratchet tooth (6) while being moved, thereby pulling the cable (12) and activating the brake. Step by step.

When the operating lever (3) is stopped in the upright state, the pawl (9) meshes with the ratchet teeth (6) currently engaged, preventing the intermediate lever (3) from returning to its original position. At the same time, the cable (12) is held in the pulled state.

Until this time, if the push button (18) is not operated at all, the push button (18) is kept in the protruding state by the urging force of the urging means (20), and the release lever (23) is at the other end. Is the contact surface (7) of the intermediate lever (3)
It is located in a normal position where it is pressed against.

During operation of the brake, the operating lever (4) may be kept in this upright state, but if it protrudes above the seat cushion and becomes a hindrance, it falls from this state to its original state. Can be made.

At this time, since the return lever of the intermediate lever (3) is blocked by the engagement of the claw (9) and the ratchet teeth (6), only the operation lever (4) rotates independently, and the release lever (3) also moves. The other end of (23) slides while being pressed against the contact surface (7) of the intermediate lever (3), and the recess (7a) of the contact surface (7).
When passing through, a proper resistance force is applied to the rotation of the operation lever (4), and the operation feeling of the operation lever (4) is improved.

After rotating the operation lever (4) to the laid state and releasing the hand from the operation lever (4), the urging force of the urging means (20) of the push button (18) causes the other of the release lever (23). Since the end is pressed against the contact surface (7), the operation lever (4) does not inadvertently move due to vibration of the vehicle body or the like.

When it is desired to release the brake operation from this state, the operation lever (4) is once rotated to the upright state until the engaging portion (17) contacts the intermediate lever (3), and then the push button (18). Push in.

Then, the release lever (23) is rotated to the release position, and the one end of the release lever (23) pushes the pawl (9) to disengage it from the ratchet teeth (6) and engages with one end of the contact surface (7). And the other end is separated from the contact surface (7).

From this state, while pushing the push button (18) and rotating the operation lever (4) to the laid state, the intermediate lever (3) is connected to one end of the engaging portion (17) and the release lever (23). The lever (4) is rotated together with the operating lever (4), the cable (12) is loosened, and the brake operation is released.

Then, when the push button (18) is released, the pawl (9) engages with the ratchet teeth (6) and the other end of the release lever (23) has the contact surface (7) of the intermediate lever (3). ), The operating lever (4) does not violently vibrate even when the vehicle is vibrating while traveling.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

(1) is a floor panel of an automobile, (2) is a mounting piece (2b) that is continuous with the lower end of the base piece (2a) and is oriented in the left-right direction.
By fixing to the upper surface of the floor panel (1),
This is a base plate in which the base piece (2a) stands upright on the floor panel (1).

In the lower middle part of the base piece (2a) of the base plate (1),
Both side pieces (3a) of the intermediate lever (3) having a downward U-shaped cross section that crosses the base piece (2a) from above, and a downward U-shaped cross section that further crosses the intermediate lever (3) from above. Both side pieces (4a) of the operating lever (4) to be formed are pivotally attached to each other with a common shaft (5) facing in the left-right direction.

An arcuate ratchet tooth (6) centered on the shaft (5) is fixed to the upper edge of the base plate (1).

Both side pieces (3a) of the intermediate lever (3) are substantially fan-shaped around the shaft (5), and their outer peripheral edges are connected to each other by an arc-shaped connecting piece (3b). The outer peripheral surface of 3b) forms an arcuate contact surface (7) about the axis (5).

The contact surface (7) is provided with a plurality of shallow and gentle recesses (7a) in the circumferential direction with an appropriate feeling.

A rectangular notch (8) is formed at the rear edge of the connecting piece (3b).

Between the both side pieces (3a) of the intermediate lever (3), a pawl (9) which can be engaged with and disengaged from the ratchet teeth (6) is pivotally attached by a shaft (10) pointing in the left-right direction.

(11) is a torsion coil spring that constantly biases the pawl (9) in a direction in which it engages with the ratchet teeth (6), and its winding portion extends rearward and upward from the floor sheet (1). The connecting fitting (13) fixed to the end of the cable (12) is wound around a shaft (14) for pivotally attaching to the intermediate lever (3).

The cable (12) is connected to a brake (not shown),
The brake can be operated by pulling it toward the rear upper side, and the operation of the brake can be released by loosening it.

A projecting piece (3c) facing inward is continuously provided at a portion of the intermediate lever (3) which is located behind the shaft (5) of the one side piece (3a), and the intermediate lever (3) has a first As shown in the figure, when the pawl (9) is located at the inoperative position where it engages with the toothless recess (6a) provided in front of the ratchet teeth (6), the protrusion (3c) is The parking brake lamp (not shown) is turned off by contacting the parking brake switch (15) fixed to the base piece (2a) of the base plate (2) with the bracket (14) and opening the contact of this switch (15). , The intermediate lever (3) rotates clockwise from the inoperative position in FIG.
When pulling the 2) and actuating the brake,
c) moves away from the parking brake switch (15),
The contact of this switch (15) is closed and the parking brake lamp is turned on.

The operating lever (4) has a synthetic resin cover (4
It is covered by c) and the front end is a cylindrical handle (4b).

The two side pieces (4a) of the operation lever (4) have the same shape as the both side pieces (3a) of the intermediate lever (3) when the operation lever (4) is rotated in the standing direction, that is, in the clockwise direction in FIG. Engagement pin (17) adapted to abut the top of a substantially triangular notch (16) formed on the lower edge to rotate the intermediate lever (3) in the direction of pulling the cable (12).
The (engagement portion) is provided so as to project.

As shown in FIG. 4, the engagement pin (17) is a projection that projects forward from the front end of the base piece (2a) of the base plate (2) when the operation lever (4) is further tilted from the horizontal state. It abuts against the piece (2c) to prevent further downward rotation of the operating lever (4).

A push button (18) is fitted to the front end of the handle (4b) of the operating lever (4) so as to be retractable from the front end surface of the handle (4b).

Rear end face of push button (18) and operation lever (4)
A compression coil spring (20) (biasing means) is contracted between the protrusion (19) cut and raised on the inner surface of the handle (4b), whereby the push button (18) projects forward. It is always urged to do so.

At the center of the rear end of the push button (18), a connecting rod (21) that passes through the center of the compression coil spring (20) and faces in the front-rear direction.
The male screw part (21a) formed at the front end of the is screwed. The rear end of the connecting rod (21) is a portion above the shaft (22) of the release lever (23) pivotally attached by the shaft (22) facing the left-right direction between both side pieces (4a) of the operation lever (4). Are linked to.

The release lever (23) includes a first arm (23a) that is bent rearward and has a tip portion bent downward in a hook shape, and a second arm (23b) that is faced downward and the tip portion has an arc shape. When the engaging pin (17) is in contact with the top of the cutout (16) of the intermediate lever (3) (hereinafter simply referred to as the lower edge of the intermediate lever (3)), the first arm (23a) is The tip (9) is inserted through the notch (8) of the intermediate lever (3).
Of the second arm (23b), and the tip of the second arm (23b) faces the contact surface (7) of the intermediate lever (3).

As for the release lever (23), when the push button (18) is pushed in, the first arm (23a) moves the intermediate lever (3).
The upper end of the claw (9) is pushed through the notch (8) of the claw (9) to disengage the claw (9) from the ratchet teeth (6), and
A release position in which the upper edge of the contact surface (7), that is, the lower end of the notch (8) is engaged, and the tip of the second arm (23b) is separated from the contact surface (7) forward (see FIG. 1). ), And when the push button (18) projects forward, the tip of the second arm (23b) is pressed against the contact surface (7) by the biasing force of the compression coil spring (20). The tip of the first arm (23a) is located at a normal position (see the phantom line in FIG. 2) away from the claw (9) and the contact surface (7) in the forward direction.

 Next, the operation of this embodiment will be described.

As shown in FIG. 1, when the operating lever (4) is rotated in a standing direction from a state in which the operating lever (4) is lying down horizontally, the engaging pin (17) contacts the intermediate lever (3). , The intermediate lever (3) is also rotated in the same direction, whereby the cable (13) is pulled, the brake is operated, and the claw (9) pivotally attached to the intermediate lever (3) , Step by step along the ratchet teeth (6).

When the operating lever (4) is stopped in the upright state, the pawl (9) meshes with the ratchet teeth (6) which are engaged at that time, and prevents the intermediate lever (3) from returning to its original position. At the same time, the cable (12) is held in the pulled state (see FIG. 2).

Until this time, if the push button (18) is not operated at all, the push button (18) is maintained in the projecting state by the biasing force of the compression coil spring (20), and the release lever (23) keeps its first position. The two arms (23b) are located in the normal position where they are pressed against the contact surface (7) of the intermediate lever (3) (see the solid line in FIG. 2).

During operation of the brake, the operating lever (4) may be kept in this upright state, but if it protrudes above the seat cushion and becomes a hindrance, it falls from this state to its original state. Can be made.

At this time, since the return lever of the intermediate lever (3) is blocked by the engagement of the pawl (9) and the ratchet teeth (6), only the operation lever (4) is independently rotated and released. When the second arm (23b) of the lever (23) slides while pressing against the contact surface (7) of the intermediate lever (3) and passes through the recess (7a) of the contact surface (7). The operating lever (4)
A suitable resistance force is applied to the rotation of the control lever, and the operation feeling of the control lever (4) is improved.

The operating lever (4) is in a substantially horizontal laid state as shown in FIG. 3, or as shown in FIG. 4, the engaging pin (17) is brought into contact with the protruding piece (2c) of the base plate (2) so as to lie down. When it is rotated to the state and the operating lever (4) is released, the other end of the release lever (23) is pressed against the contact surface (7) by the urging force of the compression coil spring (20). The operation lever (4) does not move inadvertently due to vibration of the vehicle body or the like.

When it is desired to release the brake operation from the state shown in FIG. 3 or 4, rotate the operation lever (4) once to the standing state until the engagement pin (17) contacts the intermediate lever (3). Then push in the push button (18) as shown in phantom in FIG.

Then, the release lever (23) is rotated to the release position, and the tip of the first arm (23a) pushes the pawl (9) to disengage it from the ratchet teeth (6), and the contact surface ( 7) is engaged with one end of the second arm (23b), and the tip of the second arm (23b) is separated from the contact surface (7).

From this state, while pushing the push button (18), the operating lever (4) is rotated to the collapsed state shown in FIG. 1 so that the intermediate lever (3) engages the engagement pin (17) and the release lever. The cable (12) is rotated together with the operation lever (4) so that it is sandwiched by one end of (23).
Is released and the brake is released.

Then release the push button (18) and the first
As shown in the figure, the pawl (9) engages with the recess (6a) of the ratchet tooth (6), and the other end of the release lever (23) has an abutment surface (7) of the intermediate lever (3). Since it is pressed against, the operation lever (4) does not violently vibrate even when the vehicle is running.

[Effect of device]

According to the present invention, the following effects can be obtained.

(A) After the operating lever (4) is once pulled up and the brake is operated, the operating lever (4) can be made to fall down while the brake is still operating. As with the brake inoperative state, the operating lever (4) does not project above the seat cushion, and the luggage placed in the passenger seat can be taken out from the driver's seat side,
It does not prevent the passengers from changing seats between the seated passenger and the driver. The driver can also use the entire front seat to lie down and take a nap.

(B) When the operating lever (4) is laid down while the brake is still operating, the release lever (23) slides while pressingly contacting the contact surface (7) of the intermediate lever (3), and When passing through the recess (7a) on the way, an appropriate resistance force is applied to the rotation of the operation lever (4), and the operation feeling of the operation lever (4) is improved.

(C) With the brake activated, the operating lever (4)
Since the release lever (23) is pressed against the contact surface (7) by the urging force of the urging means (20) of the push button (18) when the user is lying down, the operating lever (4)
Can be stably held without violently vibrating up and down due to vibration of the vehicle body while the vehicle is running, and without producing an unpleasant vibration noise.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view when the operation lever is substantially horizontal when the brake is not activated, and FIG. 2 is a partially cutaway side view when the operation lever is raised and the brake is operated. FIG. 3 is a side view when only the operation lever is returned and rotated from the state shown in FIG. 2 to a horizontal position, and FIG. 4 is a side view when the operation lever is further laid down from the state shown in FIG. It is a figure. (1) Floor panel, (2) Base plate (3) Intermediate lever, (4) Operation lever (5) Shaft, (6) Ratchet teeth (7) Abutment surface, (7a) Recess (9) Claw, (12) ) Cable (17) Engagement pin (engagement portion), (18) Push button (20) Compression coil spring (biasing means) (23) Release lever, (23a) First arm (23b) Second arm

Claims (1)

[Scope of utility model registration request] 1. A base plate fixed to a vehicle body, an operation lever pivotally attached to the base plate with an axis, a base plate pivotally attached to the base plate with an axis common to the operation lever, and an arc shape centered on the axis at an edge portion. Formed at the edge of the base plate and the intermediate lever to which the end of the cable is attached, which is provided with an abutment surface with a smooth recess formed in place and which is adapted to activate the brake by pulling An arcuate ratchet tooth centered on the shaft, a pawl pivotally attached to the intermediate lever so as to be disengageable from the ratchet tooth, and constantly biased in a direction to engage the ratchet tooth, and a projection on the operation lever. When the operation lever is rotated in the upright direction, it comes into contact with the intermediate lever,
An engaging portion that can be rotated in the direction of pulling the cable, a push button that is provided at the tip of the operation lever so that it can be retracted and retracted, and that is constantly urged by the urging means in the direction in which it protrudes. While being pivotally attached, the connecting rod is connected to the push button, and when the engaging portion is in contact with the intermediate lever, one end faces the claw and the other end faces the contact surface of the intermediate lever, By pushing in the push button, one end pushes the pawl in a direction to separate from the ratchet teeth, and one end of the contact surface is engaged, and the other end is positioned at the release position away from the contact surface. When the push button is protruding, the other end of the push button is brought into pressure contact with the contact surface and the one end is positioned at a normal position away from the claw and the contact surface by the urging force of the push button urging means. Operating device of the parking brake, characterized in that it comprises a release lever you.