JPH0613973U - Parking brake operating device - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] Without being released due to erroneous operation or vibration,
Moreover, a parking brake operating device having excellent operability and a simple structure is provided. A rotation lever 30 is provided rotatably inside the base portion 21 side of the operation lever body 20, and has a tip portion with a claw portion 31 that engages with the tooth portion 11 of the sector 10, and an extension direction of the operation lever. And a release rod 40 for rotating the turning lever by sliding, and the engagement point P between the sector tooth portion and the turning lever claw portion is provided on both side walls 23 of the base portion of the operation lever body. The slide holes 24, 24 are formed along the circumference around the
2 was connected to the base end 42 of the release rod, and both ends of the rotary shaft 33 were fitted in the slide holes to connect the biasing members 50, 50.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a parking brake operating device for operating a brake during parking, and particularly to a parking brake operating device capable of preventing malfunction of the parking brake.

[0002]

[Prior art]

 A conventional example of the parking brake operating device will be described with reference to FIG.

A parking brake operating device 70 shown in FIG. 8 includes an operating lever main body 78 including an operating lever 74 having a grip 72 attached to a protruding end thereof, and a plate-shaped base portion 76 integrated with the operating lever 74. The base portion 76 of the operation lever main body 78 is rotatably supported by the pin 82 provided in the sector 80 having the tooth portion 80a fixed to the floor beside the driver's seat of the vehicle.

Further, an end portion of a cable 94 connected to the parking brake of this vehicle is attached to the base portion 76.

Further, a rotation lever 86 having a release rod 96 attached to one end thereof and a claw portion 84 engaging with a tooth portion 80 a of a sector 80 provided at the other end of the base portion 76 is rotatable via a support pin 88. Is attached to.

The release rod 96 is connected to an operating knob 90 arranged in the protruding end of the operating lever 74, and is biased toward the protruding end of the operating lever 74 by a spring 92.

According to this parking brake operating device 70, the release rod 96 that receives the pushing force of the operating knob 90 is pushed by pushing the operating knob 90 in the direction of the arrow a against the biasing force of the spring 92. Is rotated to the position shown by the chain double-dashed line in FIG. 8, whereby the claw portion 84 provided at the other end of the rotation lever 86 is disengaged from the tooth portion 80a of the sector 80. That is, the operation lever main body 78 is in a state where it can freely rotate about the pin 82 as a fulcrum, and the parking brake is released.

[0008]

[Problems to be solved by the device]

 However, in the case of the parking brake operating device 70 having the above-described configuration, the parking brake is released only by displacing the operation knob 90 in the direction of the arrow a. Therefore, mischief or some impact of a child riding in the vehicle, etc. Also, there is a problem that the operation knob 90 is displaced in the direction of the arrow a and the parking brake is released.

In order to solve such a problem, it has been attempted to adopt a mechanism for releasing the parking brake by a two-step operation, but in this case, in this case, the parking brake is released. Is complicated and the structure of the device is complicated.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is a parking brake which is not easily released due to an erroneous operation or vibration and has excellent operability and a simple structure. To provide an operating device.

[0011]

[Means for Solving the Problems]

 To achieve the above object, the present invention provides a sector having a tooth portion fixedly arranged in a vehicle, a base connected to a cable connected to a parking brake of the vehicle and pivotally supported by the sector, and An operating lever main body having an operating lever extending from a base, a rotary lever provided inside the base of the operating lever main body, and having a claw portion at a tip end thereof that engages with a tooth portion of the sector, and the operating lever A release rod that is urged in the extending direction of the operation lever to rotate the rotating lever by sliding from the operation lever tip side to the base side, a parking brake operation device comprising: A slide hole is formed on both side walls along a circumference centered on the engagement point between the sector tooth portion and the rotation lever claw portion, and the rotation lever is rotated. The connecting portion to the base end portion of the release rod, the both end portions of the rotating shaft are slidably fitted into the both slide holes, and the rotating shaft is attached to both end portions of the rotating shaft of the rotating lever. A biasing member for biasing the one end of the slide hole is connected to the slide hole.

[0012]

[Action]

 In the present invention having the above-described structure, when the parking brake is activated, the operation lever body is rotated with respect to the sector in the direction of pulling the cable connected to the parking brake.

At this time, since the rotation shaft of the rotation lever is urged and locked to one end of the slide hole by the urging member, the rotation lever has its claw portion brought into contact with the tooth portion of the sector. In this state, it can be rotated and moved along the tooth shape.

Then, when the operation lever main body is released after being rotated by a predetermined angle, the tension of the cable is applied to the claw portion of the rotation lever via the release rod, so that the claw portion and the sector tooth portion are strongly engaged, The operation lever body is maintained at the predetermined rotation angle. Therefore, the cable remains pulled and the parking brake is activated.

In this state, when the release rod slides toward the base side due to mischief of a child riding in the vehicle or some kind of impact, the claw portion of the rotary lever connected to the release rod base portion becomes a tooth of the sector. There is a risk of coming off the department.

However, since the rotation shaft in the slide hole slides along the circumference around the engagement point between the sector tooth portion and the rotation lever claw portion against the biasing force of the biasing member, The moving lever rotates while maintaining the engagement between the sector tooth portion and the rotating lever claw portion.

Therefore, the claw portion of the rotating lever is not separated from the tooth portion of the sector and the parking brake is not released by the accidental sliding of the release rod.

In addition, when intentionally releasing the parking brake, after pushing the operation knob to slide the release rod toward the base side, the operation lever body is rotated so as to resist the tension of the cable. .

That is, the release rod is slid to rotate the rotation lever to change the engagement direction of the pawl portion from the engagement direction in the parking brake operating state so that the pawl portion can be easily detached, and then the tension of the cable is rotated. By performing the two operations of releasing the moving lever, the claw portion of the rotating lever separates from the tooth portion of the sector. From this state, rotate the operation lever body in the direction to loosen the cable, and the parking brake will be released.

[0020]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 are views showing a parking brake operating device according to an embodiment of the present invention.

In the parking brake operating device 1, reference numeral 10 is a sector fixedly arranged in the vehicle, and a tooth portion 11 is formed in a substantially circumferential shape on a peripheral portion facing the front of the vehicle.

Reference numeral 20 denotes an operation lever main body, and the operation lever main body 20 has a base portion 21 having side walls 23, 23 and having a substantially inverted U-shaped cross section, and a grip portion extending from the base portion 21 toward the front of the vehicle. And a cylindrical operation lever 25 to which 26 is attached.

The base portion 21 is rotatably attached to the sector 10 by a pin 12 in a state where the lower end is connected to a cable 22 leading to a parking brake (not shown), and the side wall portions 23, 23 have sector portions 10 provided on both sides thereof. Slide holes 24, 24 of a predetermined length are formed along a circumference around an engagement point P between the tooth portion 11 of the tooth and a claw portion 31 of the turning lever 30 described later.

Inside the base portion 21, a rotating lever 30 having a claw portion 31 engaging with the tooth portion 11 of the sector 10 at a tip end portion thereof and a rotating shaft 33 provided at a center portion thereof is provided. Both ends 33a and 33b of the shaft 33 are fitted in the respective slide holes 24 and 24 in a slidable manner.

A pair of fixing portions 51, 51 are provided at the front portion of the base portion 21, and the coil springs 50, 50 having one ends coupled to the fixing portions 51, 51 are provided in the rotating lever 30. The rotation lever 30 is connected to both ends 33a and 33b of the rotation shaft 33, and the rotation lever 30 is urged toward the front end side of the slide hole 24.

On the other hand, in the operation lever 25, a release rod 40 for rotating the rotation lever 30 with respect to the sector 10 by pressing the tip knob 41 is slidably inserted.

Specifically, the release rod 40 extends horizontally into the operation lever 25 from the horizontal base end portion 42, the bent portion 43 inclined upward from the base end portion 42, and the bent portion 43. A horizontal portion 44, the base end portion 42 is rotatably connected to the rotation acting portion 32 of the rotation lever 30, and the horizontal portion 44 is locked by the stopper 27 shown in FIG. It is installed in a state of being urged by.

Therefore, when the release rod 40 is slid toward the base portion 21 side by pushing the knob 41, the rotation lever 30 is guided by the slide hole 24 and the claw portion 31 is engaged with the tooth portion 11 of the sector 10. In this state, it will rotate.

As described above, the rotating lever 30 rotates about the engagement point P, but in order to prevent the pawl portion 31 from being worn, as shown in FIG. Is set to be smaller than the angle β between the tooth portions 11.

That is, even when the rotation lever 30 rotates to a position where the rotation shaft 33 comes into contact with the rear end of the slide hole 24, as shown in FIG. The angle α and the angle β are set so as not to come into contact with the tooth portion 11a positioned in the direction.

Next, the operation of the parking brake operating device according to this embodiment will be described with reference to FIGS. 1 and 4 to 7.

FIGS. 1 and 4 show the released state of the parking brake. In this state, the operating lever 25 is laid down and is located at the lowest position, and the claw portion 31 of the rotating lever 30 is located on the sector 10. It is in a state of being engaged with the lower tooth portion 11.

When the parking brake is activated, the grip 26 is used to lift the operation lever 25 in the direction of the arrow to rotate the base portion 21 and pull the cable 22 connected to the parking brake.

At this time, the rotating shaft 33 of the rotating lever 30 is urged and locked to the front end of the slide hole 24 by the coil spring 50, and the urging force of the spring 60 applied to the release rod 40 urges the pawl portion 31. Is urged in a direction to engage with the tooth portion 11 of the sector 30, the claw portion 31 moves to the upper tooth portion 11 while being in contact with the tooth portion 11 of the sector 30, as shown in FIG. To do.

Then, when the operation lever 25 is rotated by a predetermined angle and then released, the tension of the cable 22 is applied to the claw portion 31 of the rotating lever 30 via the release rod 40, and the claw portion 31 is located above the sector 10. Since the tooth portion 11 is securely engaged, the operation lever body 20 is maintained in the state of being inclined at the predetermined rotation angle.

Therefore, in this state, the cable 22 is pulled, and the parking brake is activated.

In this parking brake operating state, the knob 41 is pushed into the operation lever 25 due to mischief or some impact of a child riding in the vehicle, and as shown in FIG. When the slide lever 21 is slid to the 21 side, the rotation acting portion 32 of the rotation lever 30 connected to the base end portion 42 of the release rod 40 is pushed and the rotation lever 30 is rotated, and the pawl portion 31 moves from the tooth portion 11 of the sector 10. , There is a risk of coming off.

However, as shown by the solid line in FIG. 6, the rotation lever 30 does not rotate about the rotation shaft 33.

That is, the rotation shaft 33 of the rotation lever 30 resists the urging force of the coil spring 50 to move inside the slide hole 24 on the circumference around the engagement point P between the tooth portion 11 and the claw portion 31. Since the slide lever 30 slides in the direction of arrow c, the rotation lever 30 rotates in the direction of arrow b around the engagement point P. Moreover, since the claw portion 31 of the rotating lever 30 is pressed against the tooth portion 11 by the tension of the cable 22, the claw portion 31 is not separated from the tooth portion 11 by the rotation of the rotating lever 30.

Therefore, even if the knob 41 is inadvertently pushed while the parking brake is in the operating state, the parking brake is not released and it is safe.

Further, in case of intentionally releasing the parking brake, after pushing the knob 41 as shown in FIG. 6, the operating lever 25 is slightly lifted so as to resist the tension of the cable 22.

That is, the release rod 40 is slid to rotate the rotating lever 30, and the tip end surface of the claw portion 31 is separated from the engaging surface of the tooth portion 11 of the sector 10 as shown in FIG. 3B. Then, the grip 26 is held and the tension transmission to the rotating lever 30 of the cable 22 is cut off, and the grip 26 is slightly lifted. As shown, the claw portion 31 easily separates from the tooth portion 11. If the operating lever 25 is laid in the direction in which the cable 22 is loosened from this state, the parking brake is released.

As described above, the parking brake operating device 1 according to the present embodiment adopts a two-operation system of pushing the knob 41 and lifting the operation lever 25 in order to change the parking brake operating state to the released state. It has an extremely simple structure regardless of the two-operation method.

[0045]

[Effect of device]

 As described above, in the parking brake operating device of the present invention, even if the release rod slides due to an erroneous operation or vibration while the parking brake is operating, the rotating lever has the sector tooth portion and the rotating lever claw portion. Since the parking brake is prevented from being released by rotating it while maintaining the engaged state, the safety is higher than that of the conventional example against the unforeseen event of releasing the parking brake due to an erroneous operation or vibration, and In addition, there is an excellent effect that the operability is excellent and the structure can be simplified.

[Brief description of drawings]

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

FIG. 2 is a plan view of the parking brake operating device according to the present embodiment.

FIG. 3 is a schematic view showing a state in which a claw portion is engaged with a tooth portion,
FIG. 3A shows the engaged state of the rotary lever before the rotation, and FIG. 3B shows the engaged state of the rotary lever after the rotation.

FIG. 4 is a schematic diagram for explaining a parking brake released state.

FIG. 5 is a schematic diagram for explaining an operating state of a parking brake.

FIG. 6 is a schematic view showing a state where a knob is pushed in a parking brake operating state.

FIG. 7 is a schematic diagram showing a disengaged state of the claw portion from the operating state of the parking brake to the released state.

FIG. 8 is a schematic cross-sectional view showing a conventional parking brake operating device.

[Explanation of symbols]

 1 Parking Brake Operation Device 10 Sector 11 Teeth 20 Operating Lever Main Body 21 Base 22 Cable 23 Side Wall 24 Slide Hole 25 Operation Lever 30 Rotating Lever 31 Claw 32 Rotating Actuator 33 Rotating Shaft 40 Release Rod 42 Base End 50 coil spring

Claims (1)

[Scope of utility model registration request] 1. A sector having a tooth portion fixedly arranged in a vehicle, a base to which a cable connected to a parking brake of the vehicle is attached, and which is axially supported by the sector, and an operating lever extending from the base. An operation lever main body having a rotation lever, a rotation lever provided rotatably inside the base side of the operation lever main body, and a tip having a claw portion that engages with a tooth portion of the sector, and an extension of the operation lever. A parking brake operating device comprising: a release rod that is urged in a direction to rotate the rotating lever by sliding from the operating lever tip side to the base side; , A slide hole is formed along a circumference around an engagement point between the sector tooth portion and the rotary lever claw portion, and the rotary action portion of the rotary lever is connected to the release lever. The both ends of the rotary shaft are slidably fitted into the slide holes, and the rotary shaft is connected to both ends of the rotary shaft of the rotary lever. A parking brake operating device, characterized in that an urging member for urging the end side is connected.