JP3053641B2 - Parking brake device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a base member fixed to a vehicle body, which supports a base of an operation lever in a swingable manner, and moves the operation lever from a falling position to a standing position. The present invention relates to a parking brake device that raises and brakes.

[Background of the Invention] In recent years, as a parking brake device of this kind, it has been desired that the operation lever can be independently laid down mainly for the purpose of improving safety.

For example, a ratchet plate is fixedly mounted on a base member, a support plate is swingably supported on the base member, a claw member meshing with the ratchet plate is mounted on the support plate, and an operated member protruding upward from the claw member. An end is formed, and when the operated end of the claw member is pushed in with the operating member, the claw member is disengaged, and when the operation lever is depressed without operating the operating member, the claw member releases the engagement with the ratchet plate. Instead, there has been proposed a configuration in which the operation lever is independently returned to the lying position and stored while being held in the meshed state.

[Problem to be Solved by the Invention] However, in such a parking brake device, when the operation lever is stored in the down position, the operated end of the claw member is in a position where it is projected upward from the ratchet plate or the like. If carelessly touching the operated end of the claw member, the claw member may be disengaged and cause danger,
If a cover member is provided as a safety measure, there is a problem that the size becomes large.

The present invention has been made in view of such problems of the prior art, and has an object to provide a parking brake device that can improve safety and can be downsized. .

Means for Solving the Problems To achieve the above object, the gist of the present invention is as follows. A base member fixed to a vehicle body side supports a base of an operation lever in a swingable manner, and the operation lever In the parking brake device, the ratchet plate is fixed to the base member, and the base member is concentrically pivotally supported on the base member so that the base member is concentric with the base member.
A support plate that swings together with the operation lever when the operation lever stands up; a brake cable is connected to the support plate; and a claw member that meshes with the ratchet plate is mounted on the support plate. An operation end is protruded from the member, an operation member for releasing the engagement of the claw member is mounted on the operation lever, and the operation member is biased in a direction in which the claw member meshes with the ratchet plate. A push portion that resiliently abuts the operated end of the claw member, and engages with the operated end of the claw member so as to move the claw member in a direction opposite to the meshing direction to perform a disengagement operation. And a hook portion that is detached from the operated end of the claw member so that the operation lever falls down alone.

[Operation] When the operating lever is at the down position, the push portion of the operating member resiliently pushes the operated end of the claw member, and the claw member meshes with the ratchet plate. Further, the brake cable is in a non-braking state in which the brake cable is pulled back.

When the operation lever swings to the upright position, the support plate swings in one direction together with the operation lever. When the support plate swings in one direction, the operated end of the claw member pushes the push portion of the operation member against the resilient force, and the claw member swings and successively touches the teeth of the ratchet plate. Mesh.
As a result, the support plate is restrained from swinging, and the brake cable is pulled out to be in the braking state.

When the operating lever is turned down while the support plate is restrained from swinging, the hook portion of the operating member is disengaged from the operated end of the claw member, and the operating lever is independently lowered and stored.

When the support plate is restrained so as not to swing, the operating member is operated to swing the operated end of the claw member by the hook portion and the claw member is disengaged from the ratchet plate. And swingable.
Next, when the operation lever is lowered, the support plate swings in the other direction together with the operation lever, and returns to the initial state.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

 1 to 4 show an embodiment of the present invention.

As shown in FIGS. 1 and 3, a base member 20 is fixed to the vehicle body 10 side, and an operation lever 30 is pivotally supported on the base member 20 by a pivot 21 so that the operation lever 30 can swing between a falling position and a standing position. Have been.

A ratchet plate 20a is integrally fixed to the base member 20. The ratchet plate 20a has a plurality of teeth continuously arranged on an arc centered on the pivot 21.

Due to the pivot 21, an apex of a substantially triangular support plate 40 is formed.
41 is swingably supported. A pin member 42a is fixed to one bottom corner 42 of the support plate 40, and a brake cable (not shown) is connected to the pin member 42a via a clevis member 43.

On the other bottom corner 43 of the support plate 40, a pawl member 50 meshing with and releasing from the teeth of the ratchet plate 40 is swingably supported. The claw member 50 has an operated end 51 projecting obliquely downward.

At an intermediate portion between the base end portion 31 and the distal end portion 32 of the operation lever 30,
A long hole 33 whose longitudinal direction is the front-back direction is formed. A pin member 34 is movably fitted in the long hole 33, and the upper end of a release link 35, which is an operation member, is connected to the operation lever 30 by the pin member 34.

The release link 35 is formed in the shape of a fishing hook, and the needle shaft 36
And a needle tip 37. An intermediate portion of the needle shaft portion 36 slightly protrudes rearward to form a protrusion 38.

The needle tip portion 37 is formed in a concave shape having both walls, has both walls, and the width of the opening of both walls is slightly wider than the width of the operated end 51 of the claw member 50. In addition, hook portions 37a in which the front wall portions of both walls are engaged with and disengaged from the operated end 51 of the claw member 50.
, And the wall portion 37c on the base end side of both walls is a push portion.

The ratchet plate 20a is formed with a locking projection 25 for locking the hook 37a of the needle tip 37 of the release link 35 so as to be continuous from the lower teeth.

A pin member 39, which comes into contact with the front edge of the needle shaft portion 36 of the release link 35 and serves as a fulcrum when the release link 35 swings, is implanted in the operation lever 30.

A small hole 37b is formed in an intermediate portion between an upper end portion of the release link 35 and a portion where the pin member 39 contacts. A distal end portion 32 of the operation lever 30 is formed in a cylindrical shape, and a release rod 60 is inserted through the distal end portion 32 so as to be able to move back and forth, and a rear end portion 61 of the release rod 60 is provided with a small hole 37b of the release link 35.
Is fitted.

The release rod 60 is urged forward by a spring member 65. A release button 66 is fixed to the front end of the release rod 60. Further, the push member 37c of the release link 35 resiliently pushes the operated end 51 of the claw member 50 by the spring member 65, whereby the claw member 50 is urged in a direction in which the claw member 50 meshes with the ratchet plate 20a. ing.

 Next, the operation will be described.

In FIG. 3, when the operation lever 30 is in the down position, the pin member 42a fixed to the support plate 40 is in contact with the upper edge of the base member 20 and is restrained at the position where the support plate 40 is pressed down. ing. The claw member 50 meshes with the lower teeth of the ratchet plate 20a.

As a result, the brake cable (not shown) has been pulled back and is in a non-braking state.

At this time, the needle tip 37 of the release link 35 is engaged with the operated end 51 of the claw member 50.

The pin member 34 implanted at the upper end of the release link 35 is located at the front end of the elongated hole 33, and the needle shaft 36 is pulled forward by the spring member 65 via the release rod 60. . As a result, the push portion 37c of the needle tip 37 of the release link 35 resiliently pushes the operated end 51 of the claw member 50.

When the operation lever 30 is swung to the upright position, the operation lever 30
Raises the support plate 40 via the pin member 42a.
At this time, the operated end 51 of the claw member 50 pushes the push portion 37c of the needle point 37 of the release link 35 against the elastic force, and the release link 35 swings, and the claw member 50 is The teeth of the ratchet plate 20a are successively meshed.

As the claw members 50 successively mesh with the teeth of the ratchet plate 20a, they eventually mesh with the upper teeth as shown in FIG.

Thereby, the support plate 40 is restrained at the raised position, and the brake cable (not shown) is held in the pulled-out braking state.

When the operation lever 30 is lowered while the support plate 40 is restrained at the raised position, the release link
The protruding portion 38 of the needle shaft portion 36 of 35 is the operated end 51 of the claw member 50.
The needle tip 37 comes off the operated end 51 of the claw member 50.

As a result, the operating lever 30 falls down by itself, and becomes a storage position in which it falls further down than the lying position shown in FIG. 3, and the hook portion 37a of the needle point portion 37 of the release link 35 eventually locks the ratchet plate 20a. As shown in FIG. 2, the operation lever 30 is restrained at the storage position so that it cannot stand up.

In FIG. 2, when the release button 65 is pushed in, the hook 37a of the needle tip 37 of the release link 35 is disengaged from the locking projection 25 of the ratchet plate 20a, and the operation lever 30 can be pulled up.

When the operating lever 30 is raised, the release link 35
The protruding portion 38 of the needle shaft portion 36 rides on the operated end 51 of the claw member 50, and the needle tip portion 37 is engaged with the operated end 51 of the claw member 50 as shown in FIG. .

In FIG. 4, when the support plate 40 is restrained at the raised position, when the release button 66 is pushed backward against the urging force of the spring member 65, the release rod is released.
The release link 35 is pushed backward by 60, the pin member 34 moves the long hole 33 from the front end to the rear end, and the release link 35 is connected to the protrusion 38 of the needle shaft 36 in FIG.
Swings clockwise around the vicinity.

As a result, the hook portion 37a of the release link 35 is locked to the operated end 51 of the claw member 50, and the claw member 50 swings clockwise in FIG. 4 to disengage from the ratchet plate 20a. Thereby, the support plate 40 can be pushed down.

When the operation lever 30 falls down, the support plate 40 is pushed down together with the operation lever 30.

In the above embodiment, the needle tip 37 of the release link 35
Is shown to engage the operated end 51 of the claw member 50 obliquely from below.However, the invention is not limited to this, and when the operation lever 30 is raised, it engages with the operated end 51 of the claw member 50, Operation lever 30
Any shape may be used as long as it is disengaged from the operated end 51 of the claw member 50 when falling down.

[Effect of the Invention] According to the parking brake device according to the present invention, the operating member that engages and disengages with the operated end of the claw member when the operating lever swings between the upright position and the lying position is provided on the operating lever side. Since the operated end of the claw member is not in an obstructive position protruding upward, the claw member does not come off the ratchet plate by inadvertently pushing the operated end, thereby improving safety. In consideration of safety, for example, there is no need to cover the operated end of the claw member with a cover member, and the entire apparatus can be reduced in size.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG. 4 show an embodiment of the present invention, FIG. 1 is a perspective view of a parking brake device, and FIG. 2 to FIG. is there. 10 Body 20 Base member 20a Ratchet plate 30 Operating lever 31 Base 35 Release link (operating member) 36 Needle shaft 37 Needle tip 37a Hook 37c …… Push part 40 …… Support plate 43 …… Clevis 50 …… Claw member 51 …… Operated end 60 …… Release rod

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B60T 7/10

Claims (1)

(57) [Claims] 1. A parking brake device wherein a base of an operation lever is swingably supported by a base member fixedly mounted on a vehicle body side, and the operation lever is raised from a lying position to a standing position to perform braking. A ratchet plate fixed to the base member, a support plate pivotally supported by the base member so as to be swingable about the base, and swinging together with the operation lever when the operation lever stands up; A brake cable is connected to the plate, and a claw member that meshes with the ratchet plate is mounted on the support plate, and an operated end protrudes from the claw member. The operating member to be operated is mounted on the operating end of the claw member so as to urge the operating member in a direction in which the claw member meshes with the ratchet plate. And a push portion that abuts with the operated end of the claw member to move the claw member in a direction opposite to the meshing direction to perform a disengagement operation, and the operation lever falls down alone. A parking brake device characterized in that a hook portion which is disengaged from the operated end of the claw member is formed.