Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
  • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
  • F16D23/14—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings
  • F16D23/142—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings with a resilient member acting radially between the bearing and its guide means
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
  • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
  • F16D23/14—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings

Definitions

• the present invention relates to a release bearing used for a friction clutch of an automobile or the like, and particularly to a pull type clutch, that is, a release suitable for a clutch in which a release bearing pulls a diaphragm spring to disconnect the clutch.
• a pull type clutch that is, a release suitable for a clutch in which a release bearing pulls a diaphragm spring to disconnect the clutch.
• a release bearing has a case and a bearing body.
• the case is an assembly of a sleeve (cylindrical member) and a case.
• the sleeve is slidably supported with the sleeve in direct contact with the quill fixed to the transmission housing, and is linked to the clutch pedal.
• the case is driven in the axial direction by the lever mechanism.
• the above bearing body is held in the case part and is connected to the diaphragm spring of the clutch.
• the bearing body In the pull type clutch, the bearing body is fixed to the diaphragm spring because the diaphragm spring is pulled by the bearing body in the clutch breaking operation as described above. Therefore, for a general clutch, when the transmission housing is detached from the clutch housing during clutch maintenance work, the quill fixed to the transmission housing must be pulled out from the release bearing. Also, when pulling out, the input shaft end of the transmission located inside the quill is also inside the release bearing. Pass through.
• the input shaft may shift or tilt in the radial direction with respect to the center line of the release bearing.
• a spline for connecting a clutch disk is provided at a portion of the input shaft projecting from the quill.
• the spline of the input shaft may bite and damage the inner peripheral surface of the sleep, that is, the highly-finished working surface. If the sleeve is damaged in such a manner, it is practically impossible to replace only the sleeve due to the structure of the release bearing, and it is necessary to replace the entire release bearing. Therefore, labor and cost are required.
• the purpose of the present invention is to provide a structure that solves the above problem. Disclosure of the invention
• the present invention includes a case portion supported by a quill fixed to a housing, and a bearing main body incorporated in the case portion.
• a soft bush is detachably fixed to the sleeve between the inner periphery of the sleeve and the outer periphery of the quill.
• the bush is fixed to the inner periphery of the sleeve when the quill and the input shaft are pulled out from the bearing in the work of removing the transmission housing from the clutch housing. Therefore, the input only impacts on the inner circumference of the bush, not on the inner circumference of the sleeve itself, and there is no possibility that the sleeve will be damaged. Of course, the bush is damaged and needs to be replaced, but since the bush is detachably fixed to the inner circumference of the sleeve, the replacement is simple and inexpensive.
• the use of the high quality bush prevents the tile from being worn and eliminates the need to apply grease to the outer peripheral surface of the quill.
• FIG. 1 is a schematic partial cross-sectional view of the embodiment of the present invention
• FIG. 2 is a perspective view of the bush of FIG.
• the input side end of the input shaft 2 of the transmission projects from the transmission housing 1.
• a quill 3 is arranged concentrically around the projecting portion of the input shaft 2.
• the quill 3 has a flange portion at the base end fixed to the outer surface of the housing 1.
• the tip of the input shaft 2 protrudes from the quill 3, and the protruding tip
• -A release bearing 5 is arranged around the quill 3.
• the release bearing 5 is a case part having a sleeve 6 and a case 7, and a bearing body having an outer race 8, a ball 9, and an inner race 10.
• the inner race 10 protrudes forward (opposite to the housing 1) from the outer race 8, and the inner peripheral end of the diaphragm spring 12 is connected to the protruding end thereof by a connecting mechanism 11. .
• the diaphragm spring 12 is for biasing the pressure plate, and the pressure plate receives the elastic force of the diaphragm spring 12 to reduce the friction facing of the clutch disk. Presses against the engine flywheel, thereby engaging the clutch.
• the sleeve 6 has the inner periphery of the tubular main body slidably fitted to and supported by the quill 3 as described later.
• the sleeve 6 integrally has a large-diameter outward flange 15 at the end on the housing 1 side, and the flange 15 is fixed to the end of the case 7.
• Case 7 has an inner race 8 on its inner periphery.
• a tubular bush 20 is interposed between the tubular portion of the sleeve 6 and the quill 3.
• the bush 20 is made of a synthetic resin, and therefore has a higher quality than the metal quill 3 sleeve 6 c bush 20 is provided with an outward flange 21 at one end of the cylindrical body and a flange 2 1 is attached to the flange 15 from the housing 1 side.
• the bush 20 has an annular groove 22 near the other end. Also outside the bush 20 The peripheral surface has a tapered tapered portion on the tip side from the groove 22. As shown in FIG.
• a plurality of slits 23 are provided on the bush 20 at circumferential intervals from the tip of the groove 22 to the middle part in the longitudinal direction of the tubular main body. Due to these slits 23, the tip of the bush 20 can be elastically deformed in the direction of decreasing diameter.
• the entire inner peripheral surface of the bush 20 is movably fitted with the outer peripheral surface of the quill 3 in close contact with the quill 3, and the outer peripheral surface is provided with a sleeve 6 in a range from the groove 22 to the flange 21. It is detachably fixed to the inner peripheral surface in close contact.
• a taper having a small diameter at the tip is attached to the tip 25 of the sleeve 6.
• the bush 20 is fixed immovably in the axial direction with respect to the sleeve 6 by fitting the tapered tip portion 25 into tight contact with the tapered surface of the groove 22.
• the tip of the bush 20 is provided with the slit 23 as described above, and can be elastically deformed in the radial direction. Therefore, when the quill 3 is removed from the bush 20, By temporarily elastically deforming the distal end portion inward in the radial direction, the bush 20 can be withdrawn from the sleeve 6, and the bush 20 can be inserted into the sleeve 6.
• the input shaft 1 is displaced in the radial direction or Even if it passes inside the bearing 5 in an inclined state, the spline 4 of the input shaft 1 only touches the inner periphery of the bush 20 and damages the bush 20, and the spline 4 Does not touch. Therefore, it is sufficient to replace the bush 20 by the next assembling work, and it is not necessary to replace the sleeve 6, that is, the whole bearing 5. Needless to say, the bush 20 can be easily replaced by temporarily elastically deforming the bush 20 as described above.
• the relatively soft bush 20 slides on the quill 3, so that the quill 3 does not wear.
• the entire bearing 5 does not need to be replaced, and only the resin bush 20 needs to be replaced. Since it is sufficient, the labor and cost for disassembly can be greatly reduced.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Mechanical Operated Clutches (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=15108461

Family Applications (1)

Country Status (4)

Families Citing this family (7)

Citations (5)

Family Cites Families (10)

• 1988
  • 1988-10-12 JP JP1988133594U patent/JPH0253532U/ja active Pending
• 1989
  • 1989-10-11 US US07/536,662 patent/US5069323A/en not_active Expired - Fee Related
  • 1989-10-11 WO PCT/JP1989/001044 patent/WO1990004114A1/ja active Application Filing
  • 1989-10-11 DE DE3991165A patent/DE3991165C2/de not_active Expired - Fee Related

Patent Citations (5)

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