JPS5843611B2 - Clearance adjustment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an adjusting device that can accurately and easily obtain a predetermined clearance when a predetermined clearance is required between one member and another member.

For example, this clearance adjustment device is used in control cables for non-contact clutches in general vehicles.

Hereinafter, a conventional non-contact type cable control mechanism will be explained with reference to FIG.

A cable guide 13 having a through hole 13b is provided in the vehicle body 16.
to be fixed.

The outer cable 10 has one end connected to the clutch housing 1.
The cable guide 13 is fixed to the cable guide 13, and a male screw part 11 with a double nut 12 attached at the other end passes through the cable guide 13.

Further, the inner cable 4 is connected at one end to the clutch pedal 14 and at the other end to the with-draw lever 2.

In the clutch operation mechanism having such a configuration, the inner cable 4 is displaced relative to the outer cable 10 by depressing the clutch pedal 14, and the with-lower lever is moved.
2 is rotated counterclockwise in the figure around the fulcrum 2a, the release bearing 3 presses the center of the diaphragm spring 5, and the pressing of the facing 6 against the flywheel 9 is released. .

In the above clutch operating mechanism, when assembling the clutch operating mechanism, a predetermined clearance A is set between the with-drawing lever 2 and the release bearing 3 so that the pressing of the facing 6 against the flywheel 9 is at the optimal release position. must be adjusted so that it is obtained.

Furthermore, during long-term use, the amount of rotation of the with-draw lever 2 corresponding to a certain amount of depression of the clutch pedal 14 changes due to elongation of the inner cable 4 and wear of the facing 6, so in such cases Clearance adjustments are also required to ensure proper operation of each working part.

For this reason, in the conventional adjustment device, the double nut 12 shown in FIG. 1 or the E IJ song (not shown) is used for adjustment.

Adjustment is performed by applying a predetermined clearance A between the cable guide 13 and the double nut 12 (or E-ring) while pressing the with-draw lever 2 against the release bearing 3. Use the double nut 12. In order to provide a predetermined clearance A, a gauge of a predetermined thickness is inserted and the double nut 12 is fixed, or if a gauge is not used, the double nut 12 is fixed by visual measurement.

In the former case, assembly is time-consuming, and in the latter case, the clearance is highly variable and inaccurate.

In addition, when using an E IJ song to provide a predetermined clearance A, assembly is relatively easy, but since the E IJ song groove is stepped at one end of the outer cable 10, the clearance can be optimized In the worst case, an error occurs by the pitch of the E'J groove.

The present invention eliminates the above conventional drawbacks, and includes a locking coil wound around a threaded portion of a first member, a second member screwed onto the first member and engaged with the locking coil, and a second member fitted onto the first member. It is an object of the present invention to provide an adjusting device that can perform accurate rearance adjustment with extremely easy operation by combining the locking coil with a third member having an elastic portion that can be engaged with the locking coil.

Hereinafter, the present invention will be explained based on FIGS. 2 to 4.

The structure of this adjustment device is such that a nut 17 and a locking coil 18 are screwed into a male threaded portion 11 at one end of an outer cable 10.

The locking coil 18 has a bent part 21 at one end and an extending part 23 at the other end, and is wound at the same pitch as the male threaded part 11 so that the inner diameter and wire diameter Set.

The nut 17 has a flange portion 17a formed at its tip, and a protrusion 19 that protrudes to a predetermined length from a part of the counterbore portion 20. Make it engage.

Here, the protrusion 19 of the nut 17 and the locking coil 18
The positional relationship of the bent portions 21 is such that when the nut 17 is moved to the left in FIG. Also, tighten nut 1 so that nut 18 is tightened.
7 is rotated in the opposite direction, the other surface 19b of the protrusion 19 abuts the bent portion 21 of the rocking coil 1B, so that the locking coil 18 is loosened.

Reference numeral 22 is a ring having a through hole, and includes an elastic member 22a consisting of a flange portion and a guide portion, and a washer 22b that is press-fitted into the outer surface of the guide portion of the elastic member 22a and located on the back side of the flange portion to maintain the shape of the flange portion. and a collar 22C press-fitted into the inner surface of the through hole of the guide portion of the elastic member 22a to maintain the shape of the guide portion.

Note that in order to generate a predetermined binding force between the elastic part 122a and the locking coil 18, the hole diameter D1 of the elastic member 22a is set smaller than the outer diameter D2 of the rocking coil 18, and the inner surface of the elastic member 22a is The ring 22 fits into the male screw portion 11 so as to be able to engage with the extension portion 23 of the knocking coil 1B.

Next, in the adjustment work using the adjustment device of the present invention, one end of the outer cable 10 is fixed to the clutch housing 1, the other end is passed through the vehicle body 16, and one end of the inner cable 4 is fixed to the clutch pedal 14, and the other end is fixed to the clutch housing 1. The end is a washer 22b of a ring 22 that moves the nut 17 together with the flange portion 17a while the with-draw lever 2 is pressed against the release bear link 3 after being connected to the with-draw lever 2.
Tighten until it touches the vehicle body 16.

At this time, the bent portion 21 of the locking coil 18 is connected to the nut 17.
Since the diameter of the locking coil 18 is increased by contacting one surface 19b of the protrusion 19, the tightening force can be increased and rotated together with the nut 17.

Thereafter, when the nut 17 is reversed, the bent portion 21 of the locking coil 18 will be aligned with the surface 19 of the protrusion 19 of the nut 17.
a and reduces the diameter of the locking coil 18, which generates a tightening force and prevents the nut 17 from rotating.

At this time, a predetermined clearance is automatically obtained between the nut 17 and the vehicle body 16.

Here, the above clearance is the thread pitch and nut 1
7, that is, the shape and width dimension B of the protrusion 19.

In other words, if the thread pitch is set to an appropriate amount and the width dimension B of the protrusion 19 shown in FIG. By increasing the width dimension B, the reversible angle can be set as small as desired within one rotation, and the clearance can be made smaller than the above.

In addition, as shown in FIG.
1 by setting it at any position of the counterbore part 20 of
It is also possible to stop the reversal at a rotation speed or higher.

If it becomes necessary to reverse the nut 17 during adjustment, the right end extension 2 of the locking coil 18 in FIG.
When the ring 22 engaged with the locking coil 3 is rotated, an input is given to the locking coil 18 to increase the diameter of the locking coil 18, so the force to tighten the threaded portion is eliminated and the rotation can be easily reversed.

The clearance adjustment device of the present invention is not limited to clutch control mechanisms, but can be applied to anything that requires maintaining a predetermined amount of clearance between one member and another member.

As described above, the present invention provides a first member having a threaded portion, a locking coil threaded onto the threaded portion, a second member threaded onto the first member and engaged with the locking coil, and a second member threaded onto the first member and engaged with the locking coil. Since it is configured with a third member that fits into the first member, it is possible to easily obtain the optimum clearance by simply rotating the second member, and when it is desired to reverse the second member during adjustment. can be easily reversed by simply rotating the third member.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a diagram showing a conventional non-contact type cable type control mechanism, Fig. 2 is a diagram showing an adjustment device of the present invention, and Fig. 3 is a diagram showing a conventional non-contact cable type control mechanism.
4 is a perspective view of a locking coil of the invention, and FIG. 5 is a diagram showing another embodiment of the nut of the adjustment device of the invention. 1...Clutch housing, 2...With drawer lever, 3...Release bearing, 4...Inner cable, 5...Diaphragm spring, 6...
・Facing, 7...Pressure plate, 8・
... Crankshaft, 9 ... Flywheel, 10
...Outer cable, 11...Male thread part, 12.
...Double nut, 13...Cable guide, 13a
... Anti-vibration rubber, 14... Clutch pedal, 15...
・Stopper, 16...Car body, 17...Nut, 1
7a...Flange part, 18...Rocking coil,
DESCRIPTION OF SYMBOLS 19... Projection part, 20... Spot facing part, 21... Bending part, 22... Ring, 22a... Elastic member, 22
b...Washer, 22c...Collar, 23...Extending portion.

Claims (1)

[Claims] 1 a first member having a threaded portion; a locking coil that is threaded into the threaded portion and locked to the threaded portion against rotation in one direction; and a protrusion that engages with the locking coil; A clearance adjustment device comprising: a second member that is screwed into the member; and a third member that is fitted into the first member and has an elastic portion that can be engaged with the locking coil.