JP3471626B2 - Parking brake device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention pivotally supports a brake lever on a base member so that the brake lever can be raised and lowered, and by causing the brake lever to transmit a force to a braking portion via a cable to generate a braking force. , A parking brake device provided with a stopper for restricting an initial position of the brake lever when the brake lever is tilted.

[0002]

2. Description of the Related Art Conventionally, as a parking brake device of this type, for example, one shown in FIG. 5 has been known. That is, the base member 1 is fixedly installed near the driver's seat of the vehicle, and the brake lever 2 is pivotally supported on the base member 1 so as to be able to be raised and lowered. It is a manual parking brake device in which force is transmitted to the vehicle to generate braking force.

In such a parking brake device, when the brake lever 2 is tilted, the brake lever 2
Is provided with a stopper 3 that regulates the initial position of the. Here, the stopper 3 is formed by fixing a damper 4 to a mounting bracket 1a provided at a key portion of the base member 1.

The mounting bracket 1a is a base member 1
However, they were integrally provided by welding, caulking, or bolts and nuts. Further, the damper 4 is fixed by being fitted into the mounting bracket 1a or further screwed.

[0005]

However, in the conventional parking brake device as described above, in order to provide the stopper 3, the mounting bracket 1a is fixed to the base member 1 by welding or the damper 4 is mounted. There is a problem that assembly work such as screwing to 1a is troublesome and time-consuming, which causes a cost increase.

Further, since it is necessary to weld the mounting bracket 1a and the like to the stopper 3, there is a possibility that the mounting portion will be limited and that the member will be distorted by welding. Further, due to the mounting structure of the stopper 3, there is a problem that the brake lever 2 is likely to come off due to repeated collisions.

The present invention has been made by paying attention to the problems of the prior art as described above. The structure of the stopper and its assembling work are very simple, the cost can be reduced, and moreover, It is an object of the present invention to provide a parking brake device that has a large degree of freedom in the layout of the stopper mounting location and that has excellent durability.

[0008]

The gist of the present invention for achieving the above-mentioned object lies in the following respective items. [1] A brake lever (30) is pivotably supported on a base member (20) so that the brake lever (30) is raised, and a force is transmitted to a braking portion via a cable (C) to control the brake lever. The power is generated and the brake lever (3
0) when the parking brake device (10) is provided with a stopper (60) that regulates the initial position of the brake lever (30) when it is tilted.
0) is composed of a damper (61) with which the brake lever (30) contacts and a damper plate (64) holding the damper (61), and the stopper (60) is attached to the base member (20). The lower surface of the damper (61) that is fitted into the mounting hole (24) provided from the side and mounted, the damper (61) is elastically deformable, and is in contact with the upper surface side of the damper plate (64). An engaging portion (62) is provided on the side, and the damper plate (64) is molded from a rigid body, and the engaging portion (62) of the damper (61) is engaged with the upper surface side of the damper plate (64). Engaging parts (65) for combining with each other are provided, and locking pieces (24a) provided on both ends of at least the lower surface side of the damper plate (64) and both ends of the lower end of the mounting hole (24). Mates A thickness larger than the vertical width of the mounting hole (24) when a pair of fitting grooves (66) are provided, and the damper (61) and the damper plate (64) are vertically combined as a stopper (60). Is provided in
When the stopper (60) is attached to the attachment hole (24), the damper (61) of the stopper (60) which is pushed into the attachment hole (24) from the side first bends in the thickness direction, and the damper plate (64). Both ends of the lower surface side of the mounting hole (2
4) It is fitted so as to ride on each locking piece (24a) and then, when each fitting groove (66) of the damper plate (64) is fitted to each locking piece (24a), The parking brake device (10), wherein the damper (61) is restored and its upper surface side is in pressure contact with the upper edge of the mounting hole (24).

[2] Each locking piece (2) of the mounting hole (24)
4a) is formed by rounded corners at both ends of the lower end edge of the mounting hole (24), and both corners of the damper plate (64) on the lower surface side are provided with corners that interfere with the rounded corners. The parking brake device (1) according to [1], characterized in that the fitting grooves (66) are provided by cutting
0).

[3] The fitting grooves (66) are formed at intermediate positions in the length direction of the damper plate (64), and the fitting grooves (66) are engaged with the mounting holes (24). The parking brake device (10) according to [1] or [2], characterized in that the stopper (60) protrudes to both sides with respect to the base member (20) in half when fitted to the piece (24a). ).

[4] The engaging portion (6) of the damper (61)
2) and the engaged portion (6) of the damper plate (64)
5) The parking brake device (10) according to [3], characterized in that when the stopper (60) is mounted in the mounting hole (24), the length is set to straddle the mounting hole (24). .

Next, the operation based on the above-mentioned solving means will be described. In the parking brake device (10) according to the present invention, the base member (2) that pivotally supports the brake lever (30).
0) is provided with a mounting hole (24), and the mounting hole (24)
A stopper (60) for restricting the initial position of the brake lever (30) can be fitted to and attached to.

When the stopper (60) is mounted in the mounting hole (24), first, the damper (61) of the stopper (60) which is pushed into the mounting hole (24) from the side is bent in the thickness direction to make a damper plate. The both ends of the lower surface side of (64) are fitted in the respective locking pieces (24a) of the mounting hole (24) in a state of climbing up. When the stopper (60) is pushed into the mounting hole (24) as it is, each fitting groove (66) of the damper plate (64) is inserted into each locking piece (24a).
The damper (61) is restored and the upper surface side of the damper (61) is pressed against the upper edge of the mounting hole (24).

As described above, the stopper (60) can be easily and quickly attached to the base member (20) without using fixing means such as welding or screwing, and the member may be distorted by welding. Nor. Further, the stopper (60) has a mounting hole (2) in the base member (20).
It can be easily attached to any place where 4) can be provided, and the degree of freedom of layout is great.

When the brake lever (30) is raised, the force is transmitted to the braking portion via the cable (C) to generate the braking force, and the brake is applied. At this time, the brake lever (30) that was in contact with the stopper (60) is separated from the stopper (60).

To release the brake, the brake lever (30) may be tilted to its original initial position. Set the brake lever (30) to the damper (6) of the stopper (60).
When the cable (C) is returned to the position where it abuts against 1), the tension of the cable (C) is returned, the braking portion does not operate, and the brake is released.

Each locking piece (24a) of the mounting hole (24)
Are rounded corners at both ends of the lower end edge of the mounting hole (24), and if the corners that interfere with the round are added to both ends of the lower surface side of the damper plate (64), the corners can be removed. Thus, the fitting grooves (66) can be easily provided, and the structure of the damper plate (64) is greatly simplified.

Further, the fitting grooves (66) are formed at intermediate positions of the damper plate (64), and the fitting grooves (66) are formed.
When There fitted to the engaging piece of the mounting hole (24) (24a), if as the stopper (60) protrudes to both sides in the boundary of the base member (20) halves, the base member (2
It is possible to reliably receive the brake lever (30) that is pivotally supported by 0) on both sides.

Further, the engaging portion (6) of the damper (61) is
2) and the engaged portion (6) of the damper plate (64)
If 5) is set to a length that straddles the attachment hole (24) when the stopper (60) is attached to the attachment hole (24), the load when the base member (20) collides can be reliably received. Can be easily removed,
The durability is also improved.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of the present invention. As shown in FIGS. 1 and 2, the parking brake device 10 slidably supports a connecting member 54 to which a cable C is connected to a base member 20 installed near a driver's seat of a vehicle, and brakes the base member 20. A basic structure is configured by pivotally supporting the lever 30 so that the lever 30 can be raised and lowered. The tip side of the cable C is connected to a braking unit (not shown).

In this parking brake device 10, the intermediate position of the brake lever 30 and the connecting member 54 are connected via the relay member 53 to form a toggle mechanism. The fixing portions 21 and 21 of the base member 20 are fixed to a predetermined installation place by bolts or the like. A vertically long slide hole 22 is formed in the base member 20, and the connecting member 54 is slidably inserted in the slide hole 22.

The base member 20 is further provided with a cable attachment portion 23 for guiding the wire W constituting the cable C straight from the same direction as the longitudinal direction of the slide hole 22 toward the connecting member 54. The bottom end 31a of the base portion of the brake lever 30 abuts between the fixed portion 21 and the slide hole 22 when the brake is not braked, and the brake lever 3
A stopper 60 that regulates the initial position of 0 is provided.

As shown in FIGS. 3 and 4, the stopper 60 is
It comprises a damper 61 with which the brake lever 30 abuts, and a damper plate 64 that holds the damper 61. The stopper 60 is laterally fitted and fitted into the mounting hole 24 provided in the base member 20.

The damper 61 is formed into a substantially cubic shape from an elastically deformable material such as hard rubber. The damper 6 to be brought into contact with the upper surface side of the damper plate 64 described below.
An engagement protrusion (engagement portion) 62 is provided on the lower surface side of 1. The engagement protrusion 62 extends in the length direction of the damper 61, and is set so that the engagement protrusion 62 straddles the attachment hole 24 when the stopper 60 is attached to the attachment hole 24.
In addition, the lateral width of the damper 61 is slightly smaller than the lateral width of the mounting hole 24, and the damper 61 is set so as to bend in the mounting hole 24 in the thickness direction.

The damper plate 64 is formed of a rigid body such as metal into a rectangular plate shape slightly larger than the lower surface of the damper 61. Engagement grooves (engaged portions) 65 are provided on the upper surface side of the damper plate 64 for engaging the engaging protrusions 62 of the damper 61 and assembling them together. The engaged groove 65 also extends in the lengthwise direction similarly to the engaging projection 62, and is set so as to straddle the mounting hole 24.

A pair of fitting grooves 66, into which the locking pieces 24a, 24a provided at both ends of the lower end of the mounting hole 24 are fitted, are formed at both ends of the lower surface side of the damper plate 64.
66 is provided. As shown in FIG. 3, each fitting groove 6
6 is formed at an intermediate position in the length direction of the damper plate 64, and when each fitting groove 66 is fitted into each locking piece 24 of the mounting hole 24, half of the stopper 60 holds the base member 20. It is designed to project to both sides at the boundary.

As shown in FIG. 4, each locking piece 24a of the mounting hole 24 is formed by rounded corners at both ends of the lower end of the mounting hole 24. There are corners 67 at both ends on the lower surface side of the damper plate 64 that interfere with the rounded portions that are the locking pieces 24a.
6 is provided. Further, the damper 61 and the damper plate 64 are set to have a thickness (a ′ + a ″) which is slightly larger than the vertical width b of the mounting hole 24 in a state where the damper 61 and the damper plate 64 are combined vertically as the stopper 60.

The base portion 31 of the brake lever 30 is formed so as to cover the upper portion of the base member 20 from both side surfaces, and one end side of the base portion 31 is near the extension line of the connecting member 54 in the longitudinal direction. , Is pivotably supported via a pivot 32 so that it can be erected. In addition, on the tip side of the brake lever 30,
A handle 33 is provided so that it can be easily gripped during operation.

In this parking brake device 10, when the brake lever 30 is raised, the force is transmitted to the braking portion via the cable C, and the braking force is generated.
A lock mechanism 40 is provided for keeping the brake lever 30 in the raised state (the position indicated by the two-dot chain line in FIG. 1). The lock mechanism 40 includes a claw member 41 pivotally supported by the brake lever 30 and a guide groove 25 provided in the base member 20.

The pawl member 41 is swingably supported by the brake lever 30 via a pivot 42. Claw member 4
The swinging end of No. 1 is bent laterally at a substantially right angle to form an engaging portion 43. At the tip of the handle 33, the release button 3
4 is provided, and one end of a rod 35 inserted in the brake lever 30 is connected to the release button 34. The other end of the rod 35 is connected to the upper end of the claw member 41, and the claw member 41 is set to swing by pressing the release button 34.

Further, the claw member 41 is provided with the release button 34.
The engaging portion 43 causes the pivot shaft (pivot point) 3 of the brake lever 30 to be urged by the coil spring 36 that urges the coil lever 36 in the direction of projecting.
It is urged in a direction approaching the second side, that is, in a counterclockwise direction around the pivot 42 in FIG.

Guide groove 25 provided in the base member 20
Is formed in a shape that guides the engaging portion 43 of the claw member 40 that swings around the pivot 32 when the brake lever 30 is tilted. At one end of the guide groove 25, an engaged portion 26 that is recessed toward the pivot 32 so that the engaging portion 43 of the pawl member 41 can be fitted is formed near the maximum stroke at which the brake lever 30 is raised. ing.

When the engaging portion 43 of the pawl member 41 is fitted into the engaged portion 26, the pawl member 41 is restrained at that position and holds the brake lever 30 near the maximum stroke. Further, when the release button 34 is pushed against the biasing force of the coil spring 36, the engaging portion 43 is set to swing in a direction in which it disengages from the engaged portion 26.

Further, the parking brake device 10 is provided with a tension adjusting mechanism 50. Tension adjustment mechanism 50
Changes the position of the relay member 53 so that the cable C
It is a mechanism for adjusting the tension of. The tension adjustment mechanism 50 includes an adjustment link member 52 connected to the relay member 53 so as to be interposed between the brake lever 30 and the relay member 53, a restraint link member 51 that locks the adjustment link member 52, and an adjustment link. And a screw member 55 for restraining the position of the member 52.

Next, the operation will be described. When the stopper 60 is attached to the attachment hole 24 of the base member 20, the engaging protrusion 62 of the damper 61 is fitted into the engaged groove 65 of the damper plate 64 in advance, and the damper 61 and the damper plate 64 are attached.
Combine so that they overlap vertically.

In FIG. 4, first, when the stopper 60 is pushed into the mounting hole 24 from the side (direction perpendicular to the paper surface of FIG. 4), the damper 61 of the stopper 60 bends in the thickness direction by a dimension c. Then, the damper plate 6 which is a rigid body
Both side edges of the lower surface side of 4 ride on the respective locking pieces 24a of the mounting hole 24.

If the stopper 60 is pushed into the mounting hole 24 as it is, the bent damper 61 is restored when the fitting grooves 66 of the damper plate 64 are fitted to the locking pieces 24a. The upper surface side 63 is pressed against the upper edge 24b of the mounting hole 24. Since each fitting groove 66 of the damper plate 64 fits into each locking piece 24a, the stopper 60 is not easily disengaged from the mounting hole 24 in this state.

As described above, the stopper 60 can be easily and quickly attached to the base member 20 without using any special fixing means such as welding or screwing.
There is no risk of distortion of the member due to welding. Further, the stopper 60 can be easily attached at any place in the base member 20 where the attachment hole 24 is provided, and the degree of freedom of layout is great.

In the present embodiment, each locking piece 24a of the mounting hole 24 is simply rounded at the corners of the lower end edge of the mounting hole 24, and this rounded corner is the damper plate 64.
Since it interferes with the corners 67 at the both ends of the lower surface side, the damper plate 64 and its mounting structure are greatly simplified.

Further, since the fitting grooves 66 are formed at the intermediate positions of the damper plate 64, when the fitting grooves 66 are fitted into the locking pieces 24a of the mounting hole 24, the stopper 60 is formed.
There projects into both sides bordering the base member 20 by half. Therefore, both base lower ends 31a, 31a of the brake lever 30 pivotally supported by the base member 20 so as to be sandwiched from both side surfaces thereof.
Can be reliably received.

Furthermore, the engagement protrusion 62 of the damper 61
The engaged groove 65 of the damper plate 64 is provided in the mounting hole 24 when the stopper 60 is mounted in the mounting hole 24.
It is set to the length that straddles. Therefore, the base member 2
The collision load when 0 is received can be reliably received, it does not come off easily, and the durability is also improved.

In FIG. 1, the parking brake device 1
To brake 0, hold the handle 33 and press the arrow A
When the brake lever 30 is caused to move in the direction indicated by, the brake lever 30 rotates about the pivot 32. This brake lever 3
When the relay member 53 is pulled up with the rotation of 0,
The connecting member 5 attached to the lower end of the relay member 53
4 is pulled up in the slide hole 22 in the direction shown by the arrow B in FIG.

The position where the connecting member 54 is most pulled up in the slide hole 22 is when the relay member 53 coincides with the extending direction of the slide hole 22, and at this time, the brake lever 30 passes through the dead point of the toggle mechanism. There is. The braking force of the brake becomes stronger as the brake lever 30 is pulled up to the dead point, and the force in the direction of returning the brake lever 30 becomes stronger, but when the dead point is exceeded, the connecting member 54 of the cable C is strong. Even if force is applied, the brake lever 30 will not return.

In this state, the wire W of the cable C attached to the connecting member 54 is pulled and the braking portion (not shown) is activated to generate the braking force, and the braking state is established. . At this time, the brake lever 30 contacting the stopper 60 is separated from the stopper 60. In addition, the brake lever 30 is locked by the lock mechanism 40.
The maximum stroke shown by the two-dot broken line in FIG. 1 is maintained in the triggered state.

In the lock mechanism 40, the brake lever 30
The engaging portion 43 of the claw member 41 that swings around the pivot 32 is guided by the guide groove 25 on the base member 20 side with the up and down movement. When the brake lever 30 is raised to the vicinity of the maximum stroke, the engaging portion 43 of the claw member 41 is fitted into the engaged portion 26 by the biasing force of the coil spring 36. Then, the claw member 41 is restrained at the position, and the brake lever 30 is held near the maximum stroke by the claw member 41.

To release the brake, first, the release button 34 is pushed against the biasing force of the coil spring 36. Then, the claw member 41 is engaged with the engaging portion 4 via the rod 35.
3 swings in the direction away from the engaged portion 26 of the guide groove 25, that is, in the clockwise direction around the pivot 42 in FIG. Thereby, the claw member 41 and the brake lever 3
The restraint state of 0 is released, and the brake lever 30 may be tilted in the direction opposite to the arrow A.

The brake lever 30 can be tilted with a relatively weak force up to the dead point. When a force is applied and the dead point is exceeded, the tension of the wire W pulls the brake lever 30, so that the brake lever 30 can be easily tilted to a position where it abuts on the stopper 24. When the brake lever 30 is returned to the position where it abuts on the stopper 24, the tension of the cable C returns, the braking portion does not operate, and the brake is released.

In addition, the tension of the cable C can be adjusted by the cable tension adjusting mechanism 50 in order to adjust the braking effectiveness. That is, the screw member 55 of the tension adjusting mechanism 50 is in the state where the brake is released.
When is rotated in the positive direction, the relay member 53 is pulled along with the movement of the adjustment link member 52, whereby the screw member 55 slides in the slide hole 22 in the direction indicated by the arrow D in FIG.

Since the wire W of the cable C is connected to the screw member 55, the wire W is pulled as the screw member 55 slides, thereby adjusting the tension of the cable C during braking of the brake. be able to. That is, the braking force of the braking device can be adjusted. In order to weaken the tension of the cable C during braking and weaken the braking force of the brake, the screw member 55 may be turned in the reverse direction while the brake is released, and the cable C may be adjusted to be longer.

The parking brake device according to the present invention is not limited to the above-mentioned embodiment,
For example, the mounting hole 24 provided in the base member 20 and the damper 61 and the damper plate 64 forming the stopper 60.
The specific shape of is not limited to that illustrated.

In the illustrated construction, the damper 61 is provided with the engaging projection 62 as the engaging portion, and the damper plate 64 is provided with the engaged groove 65 as the engaged portion. However, in the opposite mode, the damper 61 is engaged. A groove is provided as a joint, and the damper plate 64
A protrusion may be provided as the engaged portion. Further, the fitting groove 66 provided in the damper plate 64 is
Even if the structure does not penetrate through the upper and lower surfaces, a cutout having a size enough to fit the locking piece 24a of the mounting hole 24 will suffice.

[0052]

According to the parking brake device of the present invention, the stopper that regulates the initial position of the brake lever is composed of a damper with which the brake lever contacts and a damper plate that holds the damper. Since it is fitted by being laterally fitted into the mounting hole provided in the base member, the stopper can be easily and quickly attached to the base member without using fixing means such as welding or screwing, There is no risk of distortion of the member due to welding. In addition, the flexibility of layout of the mounting location of the stopper is great and the durability is excellent.

[Brief description of drawings]

FIG. 1 is a side view showing a parking brake device according to an embodiment of the present invention.

FIG. 2 is a front view showing a parking brake device according to one embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a stopper of the parking brake device according to the embodiment of the present invention.

FIG. 4 is a side view showing an attachment structure of the stopper of the parking brake device according to the embodiment of the present invention.

FIG. 5 is a side view showing a conventional parking brake device.

[Explanation of symbols]

10 ... Parking brake device 20 ... Base member 21 ... Fixed part 22 ... Slide hole 23 ... Cable mounting part 24 ... Mounting hole 24a ... Locking piece 25 ... Guide groove 26 ... Engagement part 27 ... Guide section 28 ... Cam section 30 ... Brake lever 31 ... Base 32 ... Axis 33 ... Handle 35 ... Rod 36 ... Coil spring 40 ... Lock mechanism 41 ... Claw member 42 ... Axis 43 ... Engagement part 50 ... Tension adjusting mechanism 54 ... Connecting member 55 ... Screw member 60 ... Stopper 61 ... Damper 62 ... Engaging projection 64 ... Damper plate 65 ... Engaged groove 66 ... Mating groove

Front page continuation (72) Inventor Satoru Masuda, Otsuka Koki Co., Ltd., 3-777, Tarumachi, Kohoku Ward, Yokohama City, Kanagawa Prefecture (56) Reference JP-A-7-132811 (JP, A) 3-42471 (JP, U) Actual Open 57-34024 (JP, U) Actual Open 53-130736 (JP, U) Actual Open Flat 3-2868 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60T 7/10

Claims (4)

(57) [Claims] 1. A brake lever is pivotably supported on a base member so that the brake lever can be raised and lowered, and by causing the brake lever, a force is transmitted to a braking portion via a cable to generate a braking force. In the parking brake device including a stopper that restricts the initial position of the brake lever when the brake lever is pressed, the stopper includes a damper with which the brake lever contacts and a damper plate that holds the damper, and the stopper is , Is fitted into a mounting hole provided in the base member from the side, and the damper is formed so as to be elastically deformable, and an engaging portion is provided on the lower surface side of the damper that is in contact with the upper surface side of the damper plate. The damper plate is formed of a rigid body, and the upper portion of the damper plate is engaged with the engaging portion of the damper to assemble the damper plate with each other. An engaged portion for matching is provided, and a pair of fitting grooves into which locking pieces provided at both ends of the lower end of the mounting hole are fitted are provided at at least both ends of the damper plate on the lower surface side. The damper plate is provided with a thickness larger than the vertical width of the mounting hole in a state where the damper plate is vertically combined as a stopper, and when the stopper is mounted in the mounting hole, first, the stopper is pushed into the mounting hole from the side. The damper is bent in the thickness direction so that both ends of the lower surface of the damper plate are fitted into the respective locking pieces of the mounting hole, and then the fitting grooves of the damper plate are fitted into the respective locking pieces. At the time of fitting, the damper is restored and its upper surface side is pressed against the upper edge of the mounting hole.
A parking brake device characterized by: 2. Each locking piece of the mounting hole is formed by rounded corners at both ends of the lower end edge of the mounting hole, and corners which interfere with the round are formed at both side ends on the lower surface side of the damper plate. The parking brake device according to claim 1, wherein each of the fitting grooves is formed by cutting the corner and attaching the fitting groove. 3. Each of the fitting grooves is formed at an intermediate position in the lengthwise direction of the damper plate, and when each fitting groove is fitted into each locking piece of the mounting hole, each half of the stopper is the base. The parking brake device according to claim 1, wherein the parking brake device protrudes to both sides with a member as a boundary. 4. The engaging portion of the damper and the engaged portion of the damper plate are set to have a length that straddles the mounting hole when the stopper is mounted in the mounting hole. The parking brake device described in 3.