JPS6221770Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention mainly relates to an improvement of a device for remotely controlling a driven device by sliding a control cable conduit using a lever or the like pivotally supported on a vehicle.

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, and the conduit is fixed at the end. Generally, the inner cable is fixed to a vehicle body or the like by a locking member such that the tensile load applied to one end of the inner cable on the operating side can be transmitted to the driven equipment at the other end. However, in the device of the present application, the ends of the inner rope of the cable are fixed to the operating side and the driven side, a pressing load is applied to the conduit end on the operating side, and the driven device at the other end is operated by the conduit. There is.

The cables are used for remote control of clutches, brakes, accelerators, etc. in automobiles, and the cables are damaged by repeated pressing and loosening of conduits and inner cables that carry heavy loads such as clutches and brakes. Since the conduit is normally arranged in a curved manner, the inside of the curved part of the conduit will come into sliding contact with the inner cable, and it is inevitable that the inner cable will gradually elongate and the conduit will contract in the length direction. This obstructs the smooth operation of the driven equipment. Conventionally, adjustments have to be made each time the inner cable stretches or the conduit contracts, and this adjustment is done using screws or the like provided at the attachment end of the cable, but this is extremely inconvenient. Automatic adjustment is desirable.

In addition to the above-mentioned extension of the inner cable and contraction of the conduit, in the case of cables used in automobile clutch operating mechanisms, if the clutch plate is worn out, the clutch release lever will come into strong contact with the clutch release bearing. Since the clutch release fork is pushed, the inner rope of the cable may be pulled, or the conduit may be pushed, making it appear as if it has been stretched or contracted, so the cable must be adjusted in this case as well. .

In order to solve the above-mentioned drawbacks, devices such as Utility Model Application No. 51-92832 and Utility Model Application No. 51-79268 have been devised, but these are mechanisms to cope with the elongation of the inner cable. However, although these devices are mechanically extremely simple because they are stepwise using ratchets, the ratchet teeth, which can be delicately adjusted, carry heavy loads. However, with ratchet teeth that can withstand heavy loads, it was inevitable that the teeth would become larger and the adjustment would become coarser. Also, due to the distortion of the car body that occurs while the car is running, the distance between the installation points of the conduit to the car body changes slightly but intermittently, resulting in an apparent expansion and contraction of the inner cable and the conduit as if they were expanding and contracting. do. In particular, in the case of an automatic adjustment device such as the one mentioned above, the device operates to absorb the apparent elongation, and for example, the clutch mechanism may end up in a half-clutch state, which may cause damage to the clutch plate, or cause damage to the clutch plate. In the equipment, the absorption of the apparent elongation results in a state similar to that of the brake being applied, which can lead to burnout of the brake lining.

The main object of the present invention is to provide an automatic stroke adjustment device for a control cable that overcomes the above-mentioned drawbacks of the prior art.

An embodiment of the present invention applied to a clutch mechanism will be explained with reference to the drawings. In Fig. 1, reference numeral 2 is a shaft that is pivotally supported on the vehicle body, etc., and a clutch pedal A is fixed to one end of the shaft. , a lever 1 is fixed to the other end, a guide pin 3 is implanted at an appropriate position on the lever, and the end of the lever has a first locking surface formed by an arc substantially concentric with the center point of the guide pin. 4 and a second locking surface 5 formed of a circular arc concentric with the first locking surface and having a different radius.
Reference numeral 6 denotes an adjustment lever, and one end of the adjustment lever is provided with a lock release protrusion 6a, and 7 is provided with a horizontally long notch, and a first lock pin 8 and a second lock pin 9 are implanted at the other end. . Reference numeral 10 denotes an auxiliary plate, which faces the adjustment lever 6 and is connected and fixed by the first and second lock pins so as to sandwich the arc portion of the end of the lever 1. Reference numeral 11 denotes an auxiliary plate provided at one end of the auxiliary plate. An engaging portion for engaging the terminal member 15 at the end of the cable 12
3 is a cable conduit, 14 is an inner cable, 16 is a return spring that biases the lever 1 in the B direction, and a stopper 17 restricts the rotation of the lever 1 in the B direction; 18 1 is a clutch mechanism, 19 is a clutch side lever, and 20 is a stopper for the clutch side lever.

To explain the function and effect of the present invention, as shown in FIG.
The lock release protrusion 6a provided at one end of the adjustment lever 6, which is biased in the direction B by the lever 1 and is in contact with the stopper 17 and is loosely fitted in the lever 1, is also in contact with the stopper 17, in which case the conduit 13
Since a force in direction D is acting due to the reaction force of
The first lock pin 8 is not in contact with the lock surface 4, and the adjustment lever is moved to B or C with the guide pin 3 as a fulcrum.
It can be rotated freely in any direction.

When clutch pedal (hereinafter simply referred to as pedal) A is depressed and rotated in direction C, lever 1 connected by shaft 2 also begins to rotate in direction C. At this time, as shown in FIG. 4, the lever is released from stopper 17. The lock release protrusion 6a, which was released but was pushed in the G direction by the stopper, is pushed in the D direction by the conduit that is engaged with the engaging portion 11 of the auxiliary plate 10, which is integrally connected to the adjustment lever 6, and is now pushed in the F direction. As it moves, it initially touches the stopper. Subsequently, when the pedal is depressed, the lock release protrusion 6a separates from the stopper 17, and is moved in the F direction by the reaction force generated in the conduit 12 in the D direction, and at the same time, the second lock pin slidingly contacts the second lock surface 5. 9 serves as a fulcrum, the adjustment lever 6 rotates in the C direction, and the first lock surface 4 and the first lock pin 8 come into contact with each other.
As shown in the figure, the first and second locking pins forcefully pinch the first and second locking surfaces using the principle of a free hook, and the lock is locked and the lock release protrusion 6a is released.
is released from the stopper, and when the pedal is further depressed, the conduit 13 of the cable 12 slides in the direction E, and the clutch lever 19 of the remote clutch mechanism 18 is moved.
E' direction driven operation is performed.

When the pedal is then released, the lever 1 rotates in the direction B, so that the conduit 13 slides in the direction D, thus actuating the remote clutch lever 19 in the direction D'. Eventually, the lever 1 will have a lock release protrusion 6a protruding from the lever in the F direction.
comes into contact with the stopper 17 and begins to move in the G direction, and at the same time, the adjustment lever 6 begins to rotate in the B direction due to the reaction force of the conduit, and furthermore, the notch provided on the opposite side of the lock release protrusion 7 engages with the guide pin 3, the guide pin 3 becomes a fulcrum and the adjustment lever further rotates in the B direction, so the second lock pin rotates almost in sliding contact with the second lock surface. However, the first lock pin 8 separates from the first lock surface 4 and is unlocked, and almost at the same time, the lever 1 comes into contact with the stopper 17 and the rotation in the direction B is stopped, as shown in FIG. Return to state. In this normal state, the adjustment lever 6 is in a free state and can be moved in either direction C or B using the guide pin 3 as a fulcrum as described above.

If the inner cable stretches or the conduit contracts (stretching of the inner cable is relatively the same as contraction of the conduit), the adjustment lever 6 becomes free with each operation, so it can be adjusted. By moving the lever, the extension of the inner cable and the contraction of the conduit can be reliably absorbed, and the clutch mechanism can be remotely controlled again accurately in the next operation.Moreover, the spring 21 is attached to the adjustment lever and the adjustment lever is moved in the C direction. This is an unprecedented device that can more reliably absorb the elongation of the inner cable and the contraction of the conduit by energizing it.

In the explanation and drawings of the present invention, the present device is shown as an embodiment in which it is used on the operating side, but it goes without saying that the same effect can be obtained even if it is used on a lever for operating a driven device.

Furthermore, the device of the present invention is not limited to clutch operation as described above, but can be used in brakes, accelerators, and any other industrial equipment that is remotely controlled using cables.

[Brief explanation of the drawing]

The drawings are related to the invention of the present application, and FIG. 1 is a front view of the main parts showing the normal state of the device of the present application, FIG. 2 is a rear view of FIG. 1, FIG. 3 is a side view of FIG. 1, and FIG. 5 and 5 are front views showing the operating state of this device. 1: Lever, 2: Shaft, 3: Guide pin, 4: First lock surface, 5: Second lock surface, 6: Adjustment lever, 6a: Lock release projection, 7: Notch (or hole), 8: First Lock pin, 9: Second lock pin, 10: Auxiliary plate, 11: Engagement part, 16:
Return spring, 17: Stopper, 21: Spring.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Using a control cable with a lever that is rotatably mounted on an automobile, etc. by a shaft, is biased in the return direction by a return spring, and whose return position is limited by a stopper. , in a device for remotely controlling a driven device by sliding the conduit of the control cable, one end of the lever has a first locking surface in the shape of an arc, and a radius concentric with the first locking surface. A second lock surface having a different arc shape is formed, and a guide pin is implanted near the center point of the arc of the first and second lock surfaces, and one end is bored by the guide pin. A horizontally elongated notch or a horizontally elongated hole is engaged or loosely fitted therein, and a lock release protrusion is provided which projects laterally, and the other end has a second locking surface that can be pressed against the first locking surface and the second locking surface. an adjustment lever on which a first lock pin and a second lock pin are implanted; and an adjustment lever that faces the adjustment lever and is connected and fixed by the first and second lock pins so as to sandwich a region including the first and second lock surfaces of the lever. 1. An automatic stroke adjustment device for a control cable, characterized in that the adjustment lever or the auxiliary plate is further provided with an engaging portion that can engage an end member of a conduit at an appropriate position. 2. The utility model according to claim 1, wherein a spring is engaged with the adjustment lever, and the spring is biased in a direction to push the end of the conduit with which the adjustment lever is engaged. Control cable stroke automatic adjustment device.