JPH0348931Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a parking brake device that facilitates the assembly work of a parking cable.

[Technical background of the invention and its problems]

One end of the inner cable of the parking cable is fixed to the driver's seat parking lever via a clevis, and the other end is fixed to the center brake of the wheel, but this work is generally done during the final assembly process. be. In order to fix one end of the inner cable to the clevis, it is necessary to provide some slack in the inner cable, so it is necessary to draw out the inner cable an extra amount. However, this inner cable is always biased toward the center brake side by a return spring installed on the center brake side of the wheel, so it takes force to pull it out against the elasticity of the return spring, and it is difficult to pull it out in narrow spaces. Due to the work, the working posture was poor and work efficiency was reduced. Conventionally, as a solution to this problem, the parking cable was divided into two parts on the left and right at a convenient position for any task, and as shown in Figure 5, a tension adjustment mechanism 2 was installed on the outer cable 1 leading to the left driver's seat side. An adjustment mechanism 3 was provided on the outer cable 1 leading to the right center brake side. This adjustment mechanism 2,
3 is connected to the outer cable 1 via caulking metal fittings 4, 4. Further, the adjustment mechanisms 2 and 3 are arranged on the right and left sides of the adjuster screw 5 connected to the caulking metal fitting 4, the bracket 6 into which the adjuster screw 5 is inserted, and the adjuster screw 5 that fits into the adjuster screw 5. It consists of an adjuster nut 7 and a lock nut 8. Also, between these adjustment mechanisms 2 and 3 is a joint 10 with inner cables 9 and 9 connected to one end.
a and a joint 10b are provided, these are connected by a pin 11, and the inner cables 9, 9 are connected to each other by a pin 11.
It is becoming easier to connect.

In the parking brake device configured as described above, the parking cable is divided in the middle, so that the inner cable 9 can be easily fixed to the clevis. After that, the inner cables 9 and 9 are connected by the joints 10a and 10b, and the tension is adjusted by the adjustment mechanisms 2 and 3.
The adjustment mechanism is easy to install, but it has the disadvantage of being expensive because it consists of many components.

Figure 6 shows a configuration in which the length of the inner cable is adjusted by a turnbuckle. In the figure, 12 is a support provided at the driver's seat, and a parking lever 13 is rotatably supported on this support 12. has been done. The upper end of a first inner cable 14 is connected to a midway portion of this parking lever 13 via a clevis 15. Further, the end of the second inner cable 16 connected to the center brake (not shown) is extended to the parking lever 13 side. And these first
and second inner cables 14 and 16 are connected by a turnbuckle 17, and this turnbuckle 1
By rotating 7, the tension of the parking cable can be adjusted.

However, since the turnbuckle 17 is installed in the driver's seat in a narrow space, the working posture is poor and it is difficult to rotate the turnbuckle 17.

[Purpose of invention]

This invention was made in consideration of the above-mentioned circumstances, and its purpose is to provide a parking brake device in which the assembly work and tension adjustment of the parking cable can be easily performed.

[Summary of the idea]

In order to achieve the above object, this invention includes a threaded member provided at the other end of the outer cable through which the inner cable is inserted, an adjuster pipe supported by a bracket and having a fitting hole into which the threaded member is loosely inserted, and a fitting hole. When the inner cable contacts the end of the mating hole and is screwed into the threaded member, and the screwing position to the threaded member is fixed to the clevis, the return spring adjusts the amount of engagement of the threaded member into the fitting hole. The structure is such that the inner cable is made to slacken by advancing the outer cable using a tension adjustment mechanism made of a nut member that can be adjusted to reduce the biasing force.

[Example of idea]

An embodiment of this invention will be described below with reference to FIGS. 1 to 4. 31 in Figure 1 is the driver's seat 32
This support 31 is provided with an attachment portion 34 for a parking cable 33. As shown in FIG. 2, an outer cable 35 is attached to this attachment portion 34 via a caulking metal fitting 36. An inner cable 37 is drawn out from the upper part of the caulking metal fitting 36, and an inner cable end 38 is fixed to the end of the inner cable 37. On the other hand, a parking lever member 39 is rotatably supported on the support 31 by a pin 40, as shown in FIG. A clevis 41 is rotatably attached to a midway portion of the parking lever member 39. A groove 41a into which the inner cable end 38 fits is provided in the side wall of the clevis 41. Further, a shaft 4 serves as a parking brake operating member that connects the rear end of the support 31 and the lower end of the parking lever member 39.
2 is provided, and by pulling the operation knob 43, the parking lever member 3 is activated by the shaft 42.
9 rotates as shown by the arrow, and at the same time the clevis 4
1 moves upward and pulls the inner cable 37. The parking cable 33 led out from the mounting portion 34 is curved into a substantially S-shape and led to a center brake 44 of the vehicle. The tip of the inner cable 37 is fixed to the end of a center brake lever 45 that is supported by the center brake 44 so as to be openable and closable. on the other hand,
As shown in FIG. 3, the tip of the outer cable 35 is connected to an adjuster screw 47 as a screw member that constitutes a tension adjustment mechanism 60 via a caulking fitting 46.
is connected to.

An adjuster pipe 49 is detachably fixed to a bracket 48 provided at a fixed portion of the center brake 44. This adjuster pipe 4
9 is provided with a fitting hole 49 into which the adjuster screw 47 is loosely inserted. An adjuster nut 50 and a lock nut 51 are screwed into the adjuster screw 47, the tip of which is inserted into the fitting hole 49, so that the outer cable 35 is positioned on the adjuster pipe 49 by these screws. A return spring 52 is fitted between the center brake lever 45 and the bracket 48 to which the adjuster pipe 49 is fixed, and is fitted onto the inner cable 37 and biases the center brake 44 in the direction of releasing it. An insertion hole is formed in the caulking metal fitting 46 and the adjuster screw 47 so that the inner cable 37 can freely pass therethrough.

Next, in order to attach the inner cable 37 of the parking cable 33 configured as described above to the clevis 41 on the driver's seat 32 side, the tip of the adjuster screw 47 must be attached to the adjuster pipe 49 as shown in FIG. After the outer cable 35 is moved to the left until it comes into contact with the bottom of the adjuster pipe 49, it is fixed to the end face of the adjuster pipe 49 using an adjuster nut 50 and a lock nut 51. When the outer cable 35 moves toward the center brake 44 in this manner, the inner cable 37 within the outer cable 35 also moves forward together with the outer cable 35. Therefore, the inner cable 37 protruding from the tip of the adjuster pipe 49 becomes slack,
Since the elasticity of the return spring 52 also decreases,
The inner cable 37 can be easily pulled out on the driver's seat 32 side. Next, after attaching the inner cable end 38 to the clevis 41, the front end of the adjuster screw 47 is moved back by L from the bottom of the adjuster pipe 49 as shown in FIG. The inner cable 37 is twisted and pulled backwards.
The sagging that has occurred will be removed. Next, the adjuster screw 47 is fixed to the adjuster pipe 49 using the adjuster nut 50 and the lock nut 51, and an appropriate tension is applied to the parking cable 33.

[Effect of idea]

As explained above, this invention includes a screw member provided at the other end of the outer cable through which the inner cable is inserted, an adjuster pipe supported by the bracket and having a fitting hole into which the screw member is loosely inserted, and a fitting hole. When the end of the inner cable comes into contact with the end of the hole and is screwed into the screw member, and the end of the inner cable is fixed to the clevis, the screwing position to the screw member is determined by adjusting the amount of fit of the screw member into the fitting hole with the attachment of the return spring. The present invention relates to a parking brake device having a tension adjustment mechanism consisting of a nut member that can be adjusted to reduce the force. When such a tension adjustment device is adopted,
If one end of the inner cable is not locked in the clevis, screwing the nut member so that the amount of fitting of the screw member into the fitting hole is maximized will minimize the distance from the other end of the outer cable to the bracket. With this setting, the amount of protrusion of the inner cable from the other end of the outer cable increases, and accordingly, the biasing force of the return spring inevitably decreases. Therefore, one end of the inner cable can be easily pulled out from the outer cable, and one end of the inner cable can be easily locked to the clevis. Therefore, the efficiency of assembling the inner cable is improved and the working time can be reduced. In addition, even if the tension on the inner cable becomes weak after the inner cable is installed, the screw position of the nut member can be adjusted so that the amount of fitting of the screw member into the fitting hole is reduced, making it easy to tighten the inner cable. It also has the effect of being able to adjust the tension to a desired value.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of this invention, with Figure 1 being an overall view, Figure 2 being an exploded perspective view showing the end of the inner cable and the clevis that holds it;
Fig. 3 is a partially cutaway side view showing the cable on the center brake side, Fig. 4 is a side view explaining the operation of this invention, Fig. 5 is a side view showing a conventional parking brake device, Fig. 6 1 is a side view of a conventional parking brake device. 32... Driver's seat, 33... Parking cable, 35... Outer cable, 37... Inner cable, 39... Parking lever member, 41...
...Clevis, 44...Center brake, 45...
Center brake lever, 49...Adjuster pipe, 52...Return spring, 60...Tension adjustment mechanism, 47...Adjuster screw (screw member), 48...Bracket, 50...Adjuster nut, 51...Lock nut .

Claims (1)

[Scope of utility model registration request] a parking brake operating member attached to the vehicle body side member; a parking lever member having one end pivoted to the vehicle body side member and the other end disposed on the operating member; and a clevis connected to the parking lever member; A center brake having a center brake lever into which a propeller shaft for transmitting driving force to the wheels is inserted and which is displaced to brake the propeller shaft in response to the operation of the operating member, one end of which is locked to the clevis and the other end An inner cable is connected to an end of the center brake lever and interlocks the center brake lever when the operating member is operated; the inner cable is inserted through the inner cable, and one end is supported by the vehicle body side member and the other end is connected to the center brake lever. An outer cable supported on the brake side,
A bracket disposed on the center brake;
a return spring fitted between the bracket and the center brake lever and biasing the center brake in a direction to release the center brake; a screw member provided at the other end of the outer cable through which the inner cable is inserted; an adjuster pipe that is supported by a bracket and has a fitting hole into which the screw member is loosely inserted; an adjuster pipe that abuts an end of the fitting hole and is screwed into the screw member; and a tension adjustment device having a nut member capable of adjusting the amount by which the screw member is fitted into the fitting hole when locking one end of the inner cable so as to reduce the biasing force of the return spring. A parking brake device characterized by: