JPH0315863Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a device for attaching a release fork to a release hub of a clutch.

PRIOR ART FIG. 4 shows a known clutch, which is movable in the axial direction via a flywheel 2 fixed to a drive shaft 1 and a spline on a driven shaft 3 arranged coaxially with respect to the drive shaft 1. It consists of a supported clutch disk 4 and a pressure plate 6 axially movably supported in a clutch cover 5 to press the clutch disk 4 against the flywheel 2. A diaphragm spring 7 axially deformably supported by the clutch cover 5 and having a plurality of radial notches engages the pressure plate 6 at its radially outer end. clutch housing 8
has a boss 9 extending concentrically surrounding the driven shaft 3, and a release hub 10 supported on the boss 9 so as to be movable in the axial direction is provided with a release hub 10 as shown in FIGS. 5 and 6. release bearing 1
The inner ring 11a of 1 is press-fitted, and the radially inner end of the diaphragm spring 7 is engaged with the outer ring 11b. Forked part 1 that fits on the release hub 10
The release forks 12 are each attached to the release hub 10 by a clip 13 at the fulcrum 14, and the middle part thereof is swingably supported by the clutch housing 8, and the other end extends through a notch in the clutch housing 8 and projects to the outside. The tip of the piston rod 16 of the release cylinder 15 is engaged.

The clip 13 is made of a band-shaped spring plate bent into a substantially U-shape, and the side protrusion 10a of the release hub 10 and the release fork 1 are connected by the folded end 13b of one leg side 13a and the other leg side 13a'.
The forked portion 12a of the U-shaped cross section is pressed against the outer circumferential surface of the release hub 10 and the side protrusion 10a.

In such a configuration, when assembling the release hub 10 and the release fork 12, it is necessary to manually fit the two clips 13 onto the side projections 10a of the release hub 10, which is time consuming. In particular, the distance A between the release bearing 11 and the side protrusion 10a is adjusted to prevent the clip 13 from coming off on the leg side 13a.
If the bending dimension is smaller than the bending dimension B of the inwardly bent portion, the workability is very poor.

Flat side surfaces facing each other are formed around the release hub, and the legs of a linear spring bent into a substantially U-shape are inserted into the grooves formed on these sides and attached to the release hub, and the ends of both legs of this spring are It is also known to fold back the area in a U-shape approximately at right angles to the plane of the U and insert the fork of the release fork between its free end and the flat side transition step of the release hub. (Utility Model Application No. 57-127924). However, with this configuration, a groove for installing the spring must be specially machined in the release hub, and the release fork must pass through a notch in the clutch housing to connect the forked part to the stepped part of the release hub and the folded free end of the spring. The release fork must be inserted into the clutch housing, and its intermediate portion must be supported on the fulcrum of the clutch housing, but the insertion direction of the release fork must be corrected manually, which is time-consuming.

Problems to be Solved by the Invention The invention requires only one clip, fixes this clip using a clutch bearing that is press-fitted onto the release hub, and inserts the release fork in the correct direction, thereby making the assembly process easier. It allows you to improve your sexuality.

Means for solving the problem Therefore, according to the present invention, the clip for attaching the release fork to the release hub of the clutch is
It is made of a spring plate material that has a ring part that is fixed onto the release hub and two legs that extend diametrically outward from the ring part and are bent into a U shape at almost right angles to the surface of the ring part. , a pin fixed to the end of the leg fits into a hole in the fork of the release fork.

Embodiment FIGS. 1 and 2 show an embodiment of the present invention,
Parts corresponding to FIGS. 5 and 6 are given the same reference numerals. The clip 20 according to the invention, like the clip 13, is made of spring plate material and is mounted on the release hub 10 with a release bearing 11.
An annular portion 20a is sandwiched between the inner ring 11a of the release hub 10 and a shoulder portion of the release hub 10, and a U-shaped portion extends diametrically outward from the annular portion 20a and is substantially perpendicular to the surface of the annular portion 20a. Two leg sides 2 that can be bent into a letter shape
0b, and a pin 2 is attached to the end of this leg side 20b.
1 are fixed and these pins 21 fit into holes 12b in the fork 12a of the release fork 12 which are fitted on the release hub 10 against the lateral projections 10a. The inner diameter E of the annular portion 20a of the clip 20 is preferably slightly larger than the outer diameter of the release hub 10 into which it is fitted.
In order to define the relative circumferential position of the release hub 10 and to match the circumferential positions of the pin 21 and the hole 12b, a protrusion 20c is formed inside the annular portion 20a, and a recess corresponding to the release hub 10 is formed. (not shown) is preferably provided. The diameter of the hole 12b is the pin 21
It is better to make it sufficiently larger than the diameter of both pins 2
The distance D between the tips of the release fork 12 is selected to be smaller than the outer distance G of the fork 12a of the release fork 12. If the inner distance H between the leg sides 20b is larger than the distance G, rattling and hitting noises will occur between the release hub 10 and the release fork 12, so to prevent this,
One leg side 20b from the center of the circular part of the clip 20
The distance F between the forks 1 and 1 of the release fork 12
It is preferable to set the distance to be smaller than half of the outer distance between the legs 20b and to apply a preload in the radial direction by bending the leg sides 20b.

Effects of the invention According to the invention, the clip 20 has an annular portion 20a.
, so this annular part is connected to the release hub 1.
The inner ring 11a of the release bearing 11 is press-fitted onto the release hub 10 as in the conventional case.
Therefore, when assembling the release bearing 11, the clip 20 can be fixed onto the release hub 10 without any special means, and therefore, there is no need to perform special machining on the release hub 10. Furthermore, since the clip 20 has two bent leg sides 20b that are integral with the annular portion 20a, the release fork 12
release bearing 1 at the same time.
0, and work efficiency is significantly improved compared to the conventional method that uses two clips. Furthermore, the forked portion 12a of the release fork 12 is attached to the existing side protrusion 10 of the release hub 10.
Since the correct assembly direction can be obtained by simply fitting the release hub 10 onto the release hub 10 in a state where it is in contact with point a, there is also the advantage that the assembly work efficiency is significantly improved.

[Brief explanation of the drawing]

Figure 1 is a horizontal sectional view of the part where the release fork is attached to the release hub of the clutch according to the present invention.
Fig. 2 is a vertical sectional view taken along the axis of the clutch, Fig. 3 is a front view of the clip, Fig. 4 is a sectional view taken along the axis of the conventional clutch, and Figs. 5 and 6 are views of the release hub of the conventional clutch. FIG. 2 is a view corresponding to FIGS. 1 and 2 of the release fork attachment portion. 10... Release hub, 12... Release fork, 12a... Fork, 12b... Hole, 20...
...Clip, 20a...ring part, 20b...leg side, 21...pin.

Claims (1)

[Scope of utility model registration request] A clip 20 for attaching the release fork 12 to the release hub 10 of the clutch extends diametrically outwardly from the annular portion 20a which is fixed onto the release hub 10 and is substantially perpendicular to the surface of the annular portion 20a. The release fork 1 is made of a spring plate material having two leg sides 20b that can be bent into a U-shape, and a pin 21 fixed to the end of the leg sides 20b is attached to the release fork 1.
A device for attaching a release fork to a release hub of a clutch, characterized in that it fits into a hole 12b in a forked portion 12a of a clutch.