JPH0557455U - Mounting structure of grease hose to release sleeve of pull type clutch - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent water from entering the clutch housing and improve workability in assembly. [Structure] A grommet for attaching a grease hose to a through hole portion of a clutch housing is formed of a small diameter portion that supports the hose, a large diameter portion that is fitted into the through hole portion, and a conical portion that connects both portions.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a structure for attaching a grease hose to a release sleeve of a pull type clutch.

[0002]

[Prior Art]

 FIG. 1 is a view showing an embodiment of the present invention, of which known portions will be described in order to understand the invention of the present application well.

FIG. 1 shows an example of a pull-type multi-plate clutch. The flywheel 1 is equipped with a pull-type multi-plate clutch indicated by reference numeral C. The outer edge of the diaphragm spring 2 is brought into contact with the clutch cover 3 and, in the middle, is brought into contact with the pressure plate 4 and bolted, and the inner edge is locked to the inner cylinder 11 of the release sleeve 10. There is. The release sleeve 10 is slidably supported by the bearing cap 19.

On the other hand, a horizontal release shaft 6 is rotatably supported by a clutch housing 5 a formed integrally with the transmission case 5, and a release yoke 7 is fixedly mounted on the shaft 6. The rollers 8 provided at the ends of the two yoke portions 7a of the release yoke 7 are in contact with the ear portions 13 of the release sleeve 10 that project from both sides of the outer cylinder 12.

With this structure, when the clutch pedal is stepped on, the release yoke 7 rotates clockwise via the release shaft 6 by means not shown. As a result, the roller 8 moves from the illustrated position to the position 8a, pulls, ie, pulls, the release sleeve 10 via the ear 13 and moves to the position 10a. Therefore, the diaphragm spring 2 is deformed into the shape 2a and the clutch is disengaged. Reference numeral 2b is the shape of the diaphragm spring 2 in the wear limit state, reference numeral 8b is the position of the roller 8 in the above state, and 20 is a grease hose to the release bearing B of the release sleeve 10.

[0006]

[Problems to be solved by the device]

 The grease hose 20 extends through the clutch housing 5a and is attached to the outside of the housing 5a by a bracket 28 (FIG. 3). In order to protect the grease hose 20, a grommet (not shown) is provided at the through portion of the clutch housing 5a. This grommet also serves to prevent water from entering. To attach the grease hose 20, when the grommet is assembled to the clutch housing 5a in advance, the mouthpiece 26 (Fig. 3) at the tip of the hose 20 is larger than the outer diameter of the hose 20, so a slit is formed in the grommet. Needed and not preferred for water ingress. Further, since the grease hose 20 moves to the position 10a when the release sleeve 20 operates, the hose 20 needs to have a sufficient length to absorb the movement, but it is troublesome to adjust the margin. , Assembly workability is poor.

An object of the present invention is to provide a structure for mounting a grease hose on a release sleeve of a pull-type clutch, which prevents water from entering the clutch housing and improves workability in assembling.

[0008]

[Means for Solving the Problems]

 According to the present invention, in a structure for attaching a grease hose to a release sleeve of a pull-type clutch, the grease hose is attached to a clutch housing via a grommet, and the grommet is attached to the grommet, which is a sleeve when the clutch of the grease hose is operating. A small diameter portion that is positioned in the clutch housing so as to have a movable length, a large diameter portion that is fitted in a through hole portion of a hose mouthpiece portion that is bored in the clutch housing, and the large diameter portion. A conical portion that connects the diameter portion and the small diameter portion is formed.

The small diameter portion of the grommet is preferably adhered to a predetermined position in advance when the grease hose assembly is assembled.

The inner diameter of the hose through hole of the clutch housing is preferably formed so that the mouthpiece can be inserted with a margin.

[0011]

[Action]

 In the grease hose mounting structure for the release sleeve of the pull-type clutch configured as described above, an assembly in which the release sleeve-side connector, grommet and mouthpiece are mounted on the grease hose is prepared in advance. Then, attach the connector to the release sleeve, pull the mouthpiece out through the through hole of the clutch housing, fit the large diameter part of the grommet to the edge of the through hole, and then attach the mouthpiece to the clutch via the bracket. Install in the housing. Therefore, the adjustment of the margin is unnecessary, and the workability of assembling is improved. Further, since the small diameter portion of the grommet is adhered to the grease hose and the large diameter portion is fitted to the clutch housing, intrusion of water from the outside into the clutch housing is surely prevented.

[0012]

【Example】

 In FIG. 1, the grease hose 20 connected to the release sleeve 10 is extended to the outside through a grommet 21 fitted in a through hole 15 formed in the clutch housing 5a.

2 and 3, the grommet 21 includes a small diameter portion 22 fitted to the grease hose 20, a large diameter portion 24 fitted to the through hole 15, and a conical portion connecting both portions 22 and 24. The large diameter portion 24 is formed with an annular groove 24a. The through hole 15 is formed with an inner diameter that allows the cap 26 to be inserted with a margin.

When assembling the grease hose 20 to the release sleeve 10, a movable position of the release sleeve 10 is added to a predetermined position of the hose 20, that is, a natural length of the hose 20 from the release sleeve 10 to the through hole 15. An assembly in which the small diameter portion 22 is adhered so that the large diameter portion 24 is located at the position of the predetermined length L, the connector 25 is attached to the inner end portion of the hose 20, and the grease nipple 27 is attached to the outer end portion via the mouthpiece 26. Prepare item A. Then, the connector 25 is connected to the release sleeve 10 and the cap 26 is inserted into the through hole 15 and pulled out to the outside of the clutch housing 5a as shown in FIG. Finally, the mouthpiece 26 is pulled to fit the annular groove 24a of the large-diameter portion 24 into the through hole 15, and then the mouthpiece 26 is attached to the clutch housing 5a by the bracket 28. In this state, the length L is automatically determined and does not need to be adjusted, and the fluctuation in the length of the grease hose 20 due to the movement of the release sleeve 10 is absorbed by the length L. Further, since the small-diameter portion 22 is connected to the hose 20 and the annular groove 24a of the large-diameter portion 24 is fitted to the edge of the through hole 15, the grommet 20 allows water from the outside to enter the clutch housing 5a. Intrusion is reliably prevented.

[0015]

[Effect of the device]

 Since the present invention is configured as described above, it is possible to prevent water from entering the inside of the clutch housing and improve the workability of assembling the grease hose.

[Brief description of drawings]

FIG. 1 is a side sectional view of a pull-type multi-plate clutch showing an embodiment of the present invention.

FIG. 2 is a side sectional view of a grommet.

FIG. 3 is a perspective view showing a grease hose assembly.

FIG. 4 is a side view showing a mounting mode of the grease hose assembly.

[Explanation of symbols]

 A: Grease hose assembly B: Release bearing C: Pull-type double plate clutch L: Predetermined length 1 ... Flywheel 2 ... Diaphragm spring 3 ... Clutch cover 4. ..Pressure plate 5 ... Transmission case 5a ... Clutch housing 6 ... Release shaft 7 ... Release yoke 7a ... Yoke portion 8 ... Roller 9 ... Main drive shaft 10 ... Release sleeve 11 ... Inner cylinder 12 ... Outer cylinder 13 ... Ear portion 15 ... Through hole 19 ... Bearing cap 20 ... Grease hose 21 ... Grommet 22 ... Small diameter portion 23・ ・ ・ Conical part 24 ・ ・ ・ Large diameter part 24a ・ ・ ・ Annular groove 25 ・ ・ ・ Connector 26 ・ ・ ・ Mouth 27 ・ ・ ・ Grease nipple 28 ... bracket

Claims (1)

[Scope of utility model registration request] 1. A structure for attaching a grease hose to a release sleeve of a pull type clutch, wherein the grease hose is attached to a clutch housing via a grommet, and the grommet is provided with a grommet capable of moving the sleeve during clutch operation of the grease hose. A small diameter portion that is positioned in the clutch housing so as to have a length, a large diameter portion that is fitted into a through hole portion through which a hose cap portion formed in the clutch housing can pass, and the large diameter portion. A structure for attaching a grease hose to a release sleeve of a pull-type clutch, characterized in that a conical portion that is continuous with the small diameter portion is formed.