JPS607977Y2 - Control cable elongation automatic absorption device - Google Patents

Description

[Detailed Description of the Invention] The present invention mainly relates to an improvement of a handbrake device using a control cable for automobiles, etc.

The basic structure of a control cable (hereinafter simply referred to as a cable) consists of a flexible conduit and a flexible inner cable that is slidably inserted into the conduit. It is constructed so that the load can be transmitted to the other end.

The inner cable is made of at least several steel wires twisted together, and the inner cable may gradually stretch over a relatively long period of time during use, especially due to repeated tension due to heavy loads such as automobile brakes. This was unavoidable, and in the past, adjustment was required each time.Cable installation was adjusted using screws, etc. at the end, but it was extremely inconvenient, and it was desirable to adjust automatically.This drawback. A few automatic elongation absorption devices have been devised as devices to solve this problem, but none of these devices were fully satisfactory.

For example, it may be mechanically extremely complex, the elongation of the inner cable may not be absorbed sufficiently, or even the apparent elongation due to distortion of the car body that occurs while the car is being driven may be absorbed, causing damage to the brakes due to seizure. It was like coming.

The main object of the present invention is to provide a device that automatically absorbs and adjusts the elongation of the inner cable, which eliminates the various conventional drawbacks as described above.

One embodiment of the present invention will be explained with reference to the drawings. In FIG.
It is pivotally mounted in common with the disc 2, and a part of the outer peripheral surface of the disc 2 is provided with disc ratchet teeth 2a, a pulley part 2b, and a control cable latching part 2C.

A spiral spring 4 is fitted into the gap between the disc 2 and the brake lever (hereinafter simply referred to as lever) 1, and the tips of the spiral spring 4 are locked at appropriate positions on the lever 1 and disc 2, respectively. , the disk 2 is urged in the direction A, and the cable 13 hooked to the disk is slightly pulled in the direction A.

A fan-shaped ratchet 5 is pivotally attached to a shaft 10 implanted at an appropriate position on the lever 1, and by rotating around the shaft 10, the fan-shaped ratchet 5 engages the first ratchets provided on both sides of the toothless portion 5C. The tooth 5a and the second ratchet tooth 5b are designed to mesh with the disk ratchet tooth 2a.The fan ratchet 5 is biased in the direction C by a spring 9, and the first stopper 6 is pressed against the fan ratchet 5. A second stopper 10 is provided at an appropriate position of the lever 1 to restrict rotation in the C direction, and is designed to prevent rotation of the fan-shaped ratchet 5 in the C direction at a certain position, which is separated from the first stopper 6. being done.

The fixed ratchet base 7 is provided with fixed ratchet teeth 7a, and the fixed ratchet teeth 7a are provided with ratchet pawls 8.
is engaged to prevent the lever 1 from moving in the F direction, and when the release button 11 is moved in the C direction, the fixed ratchet teeth 7a and the ratchet pawl 8 are disengaged, and the lever 1 is moved in the F direction. It is designed to work properly.

To explain the operation and effect of the present invention, when the lever 1 is operated in the C direction, the fan-shaped ratchet 5 is biased in the C direction by the spring 9, so it begins to rotate in the C direction along the first stopper and rotates in the second direction. As shown in the figure, the first ratchet tooth 5a
is disengaged from the disc ratchet teeth 2a, and the toothless portion 5a temporarily frees the disc 2. When the lever 1 is further operated in the direction C, the fan-shaped ratchet 5 is released as shown in FIG. Further, it rotates in the C direction from along the first stopper 6, and at the same time the second ratchet tooth 5b engages with the disc ratchet tooth 2a, the fan-shaped ratchet 5 hits the second stopper 12 and rotation in the C direction is prevented. At the same time, the disc 2 is fixed.Furthermore, by operating the lever 1 in the C direction, the disc 2 is rotated in the A direction.The cable 13, which is latched to the control cable latching part 2C, is moved in the A direction of the disc. It operates in the direction as it rotates, and can be wound around the pulley portion 2b to operate a remote brake, etc. (not shown).

When releasing the brake, etc., the ratchet pawl 8 is engaged with the fixed ratchet tooth 7a shown by the two-dot chain line in FIG. When is operated in the F direction, the disc 2 also rotates in the B direction, and the cable wound around the pulley 2b is unwound and operated in the J direction.

The fan-shaped ratchet 5 hits the first stopper 6 and at the same time D
The second ratchet tooth 5b and the disc ratchet tooth 2a are disengaged from each other, and the disc 2 becomes free again as shown in FIG. In other words, since the disk is biased in the A direction by the spiral spring 4, the inner cable 13 is automatically adjusted.
is pulled in the direction by the amount of extension, and is wound around the pulley 2b, automatically completing the adjustment. When the lever 1 is further pushed down in the direction F, the fan-shaped ratchet is rotated in the direction D by the first stopper 6, and the ratchet is rotated in the direction D by the first stopper 6. The first ratchet tooth 5a meshes with the disc ratchet tooth 2a to fix the disc 2 and complete the operation.

Therefore, by the next operation of the lever 1 in the C direction, the inner cable 13 can be sufficiently slid in the direction and the brake (not shown) etc. can be operated more reliably than ever before.

In the device of the present invention, in the process of operating the lever 1, the disc 2 always passes through a state where it becomes free as shown in Fig. 2, so even if the inner cable stretches, it will automatically automatically This is an excellent and effective device that can be adjusted, and even if the apparent elongation due to distortion of the full car body is absorbed, it can be automatically corrected immediately with the next operation.

It goes without saying that even if the first ratchet teeth 5a provided on the fan-shaped ratchet can be omitted if necessary, the effects of the present invention will not be impaired.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is a partially cutaway side view of the main part showing its structure, and Figs. 2 and 3 are part of the main parts showing the process of operation of the device. It is a notch side view. 1 brake lever, 2: disc, 2a: disc ratchet tooth, 2b: pulley part, 2c: control cable latching part, 3: shaft, 4: spiral spring, 5: sector ratchet, 5
a: 1st ratchet tooth, 5b: 2nd ratchet tooth, 5C
: Missing tooth part, 6: First stopper, 7: Fixed ratchet base, 9: Spring, 10: Shaft, 12: Second stopper, 13
: Inner cable.

Claims (1)

[Scope of utility model registration request] A handbrake device that is attached to the floor of a vehicle has a ratchet base fixed to the floor, a shaft pivoted at an appropriate position on the base, a brake lever attached to the shaft, and a spiral spring that controls the rotation direction in a constant direction. A disc energized by the brake lever is pivotally mounted in common, and a pulley part, a disc ratchet tooth, and a control cable latching part are respectively provided on one area of the outer periphery of the disc, and the front brake lever is provided with a shaft. a fan-shaped ratchet which is pivotally supported and has first and second ratchet teeth at both ends thereof that mesh with the disc ratchet teeth with a toothless portion as a boundary on its outer periphery, and is biased in a constant rotational direction by a spring; A first stopper S is vertically bent from the floor surface and is brought into contact with the fan-shaped ratchet to restrict its rotation, and a first stopper is provided to prevent the rotation of the fan-shaped ratchet at a predetermined position due to the biasing force of the spring. An automatic control cable elongation absorbing device characterized by being composed of two stoppers.