JPS586091B2 - How to assemble the clutch operating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of assembling a clutch operating device, and more particularly to a method of assembling a clutch operating device without twisting the flexible bulkhead of an actuator.

In a clutch operating device in which a with-drawing lever is pivotally attached to an actuator rod that operates in conjunction with an actuator, and the clutch is engaged and disconnected based on the rocking motion of the with-drawing lever, two parts are connected inside the shell of the actuator.
The flexible partition wall that divides the room into individual chambers is provided with an elastic member such as synthetic rubber that gives flex to the partition wall.

For this purpose, the other end of the actuator rod connected to the flexible bulkhead is assembled to the with draw lever in advance, and then the length of the actuator rod, that is, the swinging position of the with draw lever, is adjusted during assembly or When adjusting the length of the actuator rod by rotating the length adjustment member to compensate for the amount of wear on the clutch disc, or after adjusting the length of the actuator rod, assemble the other end of the rod to the with-draw lever. In doing so,
The elastic members of the flexible bulkhead, which have relatively high elasticity, are often assembled in a twisted state.

In the conventional assembly method, it was not possible to detect or correct the twisting of the flexible bulkhead that occurred in this way, so the flexible bulkhead that was assembled while being twisted suffered significant fatigue. The drawback was that it lacked durability.

In the present invention, the actuator is assembled by maintaining the relative position of the actuator rod and the shell in a predetermined relationship, then the with-lower lever is pivotally attached to the actuator rod, and the length of the actuator rod is then adjusted. or when pivoting the other end of the rod to the with-draw lever after adjusting the length of the actuator rod, the above-mentioned deviation in the relative position of the actuator rod to the shell is within the permissible range. As a first marking indicating the torsion position of the actuator rod, the center line in the thickness direction of the chamfered portion provided on the actuator rod is positioned within the range of the second marking provided on the outside of the shell. By tightening the cord and fixing its length, the above-mentioned disadvantages are eliminated.

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

The actuator 3 is attached to the transmission 1 via the bracket 2, and the shell 4 of the actuator 3 is attached to the transmission 1 via the bracket 2.
The interior of the chamber is divided into an atmospheric pressure chamber 6 and a negative pressure chamber 7 by a diaphragm 5, which is a flexible partition.

The diaphragm 5 has an elastic member 5' made of synthetic rubber, for example, on its periphery, and therefore the diaphragm 5 is able to maintain the pressure between the atmospheric pressure supplied to the atmospheric pressure chamber 6 and the negative pressure supplied to the negative pressure chamber 7. Due to the difference, it moves to the negative pressure chamber side.

The actuator rod 8, which has one end fixed to the center of the diaphragm 5, is moved by this movement of the diaphragm 5.
Rotate the with-draw lever 9, which is pivotally connected to the other end of the rod 8, clockwise.

A clutch 11 whose output side is disposed on an input shaft 10 extending from the transmission 1 and whose input side is connected to an engine output shaft (not shown) is connected to the transmission 1 by clockwise rotation of the with-drawing lever 9. discontinues power transmission.

Conversely, when atmospheric air is supplied to the negative pressure chamber 7, the internal pressures of the atmospheric pressure chamber 6 and the negative pressure chamber 7 become equal, the diaphragm 5 returns to its original position, and the with draw lever 9 rotates in the opposite direction. to return to the original position and connect the clutch 11.

In the clutch operating device that operates in this manner, when assembling the actuator 3, first, one end of the connecting member 8' of the actuator rod 8 is fixed to the center of the diaphragm 5.

Next, these are fitted into one shell member 4, and then the center line in the thickness direction of the chamfered portion 12 for retaining the wrench provided at the other end of the connecting member 8' is aligned with the other shell member 4''.
The shell member 4'' is assembled while visually confirming that the elastic member 5' is aligned with the center of the circumferential marking 13 provided on the outside of the elastic member 5' and that the elastic member 5' is not twisted.

Note that the marking 13 may be provided in a direction in which the actuator rod 8 is not twisted after the shell member 4'' is assembled.

The actuator rod 8 has a connecting member 8' and an actuating member 8.
'' are connected by a length adjusting member 8'', each end of the adjusting member 8'' has a male thread with opposite winding directions, and the ends of the connecting member 8' and the operating member 8'' each has a female thread or a nut that can be screwed together with the aforementioned male thread.

Next, when assembling the actuator rod 8 and the with-draw lever 9, if the actuator rod 8 is pivoted to the lever 9 in advance, the clevis as the actuating member 8'' and the pin of the lever 9 are attached. In order to reliably prevent the pivot pin inserted into the hole 9'' from falling off using a snap pin, etc., and to optimize the clutch engagement/disengagement state, the vacuum chamber 7 is at atmospheric pressure and the diaphragm 5 is in the return position. The length of the actuator rod 8 is adjusted until it comes into contact with the release bearing 9' attached to the lower end of the lever 9 and the spring 14.

The length of the rod 8 can be changed by rotating the length adjustment member 8'', which is adjusted by adjusting the length and locking the lock nut 15.1.
6, the elastic member 5' having high elasticity may be twisted considerably.

In order to prevent the diaphragm 5 from twisting in this way, in the present invention, a wrench is applied to the chamfered portion 12 in advance.
Using this wrench, the adjusting member 8'' is rotated while maintaining the center line of the chamfered portion within the range of the marking 13 so that the relative relationship between the shell 4 and the connecting member 8' does not change during the actuator assembly described above. While maintaining this state, tighten the lock nuts 15 and 16 to fix the length of the rod 8.

If it is difficult to accurately measure the return position of the diaphragm 5 using this method, move the rod 8 to the with draw lever 9.
In some cases, the length of the actuator rod 8 may be adjusted before assembly.

In this case, when the diaphragm 5 is fully moved toward the negative pressure chamber 7 side, the pin hole of the clevis 8" and the pin hole 9" of the lever 9 are
Adjust the length of the rod 8 so that the distance between the rod and the rod is the required distance.

At this time, the clevis 8'' is rotated so that the axis of the pin hole of the clevis 8'' is not completely parallel to the 9% line of the pin hole of the lever 9, so if the clevis 8'' is twisted, When the lever 9 and the clevis 8'' are connected by the pivot pin, the diaphragm 5 is in a somewhat twisted state.

However, even in this state, if the center line in the thickness direction of the chamfered portion 12 is within the range of the marking 13 after the assembly of the clevis 8'' and the lever 9 is completed, the twisting will occur due to the durability of the diaphragm 5. There is no need to particularly correct the torsion of the tire flamm 5 since it is within an allowable range that does not significantly affect the performance or the like.

However, if the length is adjusted randomly, in most cases the twist will exceed the allowable range indicated by the markings 13.

In that case, while keeping the axis of the clevis 8'' hole parallel to the axis of the pin hole 9'' of the with draw lever 9, use a spanner to twist the chamfered portion 12 by an amount exceeding the allowable range.
Correct the center line to within the range of marking 13 and tighten locknuts N5 and 16, then tighten the actuating member 8"
Assemble the closing clevis to the with draw lever 9.

Such an assembly method is extremely effective not only for the initial assembly of the clutch operating device, but also for adjusting the length of the actuator rod based on, for example, wear of the facing of the clutch disc. Note that another method for adjusting the length of the actuator rod 8 is, for example, by providing a plurality of scales 8'a on the surface of the connecting member 8' along the axial direction as shown in FIG. After adjusting the length of the actuator rod 8 with the adjustment member 8'', the end is adjusted at the position where this scale 8'a matches the edge 4'a of the shell member 4'' that passes through the connecting member 8'. A marking g/b is provided with paint or the like on the scale 8'a corresponding to the edge 4''a.

Here, if the scale 8'a is engraved, there is an advantage that the paint is difficult to peel off.

As the facing of the clutch disk wears, the connecting member 8' moves outward from the shell 4, and the marking 8'b and the edge 4''a no longer match, but the amount of wear on the facing is simply determined by the adjusting member. Rotate 8"' to mark 8
Since compensation can be easily made by simply matching the edge 4''b with the edge 4''a, there is little variation due to the skill level of the operator.

Note that each scale 8'a of the connecting member 8' corresponds to the dust cover 4'.
Since it is covered by b, scale 8'a1 marking 8'b
will not become difficult to see due to muddy water or dust.

Therefore, according to the present invention, it is possible to assemble the clutch operating device without twisting the flexible bulkhead, and even if twisting occurs, the amount of twisting can be detected by the chamfered portion and the marking, and it can be easily corrected. Therefore, the durability of the actuator can be significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a part of a clutch and a clutch operating device assembled by the method of the present invention, and FIG. 2 is a sectional view taken along line II in FIG. 1... Transmission, 2... Bracket, 3... Actuator, 4... Shell, 4', 4"... Shell member, 4'
a... Edge, 4'b... Dust cover, 5... Diaphragm, 5'... Elastic member, 6... Atmospheric pressure chamber, 7... Negative pressure chamber, 8... Actuator rod, 8'... Connecting parts, 8'a …scale,
8'b, 13...Marking, 8"...Clevis, 8"...Adjustment member, 9...With drawer lever, 9'...Release bearing, 9"...Pin hole, 10...Input shaft, 11...Clutch, 12... Chamfered part, 14... Separate spring, 15, 16...
nut.

Claims (1)

[Claims] 1 an actuator having a shell and a flexible bulkhead;
In a clutch operating device comprising an actuator rod having one end fixed to the flexible bulkhead and a with-lower lever pivotally connected to the other end of the actuator rod, a lever is provided on the actuator rod to indicate a specific direction of rotation. The actuator is assembled so that the marking No. 1 is aligned approximately with the center of the second marking provided on the outside of the shell indicating the permissible torsional range of the partition wall so as not to cause distortion in the torsional direction of the partition wall, and then the actuator rod No. 1 is assembled. A method of assembling a clutch operating device, in which the length of the actuator rod is fixed by locating the first marking within the range of the second marking when adjusting the length of the actuator rod.