CN212615996U - Asymmetric key groove type sliding sleeve for clutch release bearing - Google Patents

Abstract

The utility model discloses a clutch release bearing is with asymmetric keyway formula sliding sleeve, including iron inserts and the sliding sleeve body, the iron inserts cup joints and fixes on the sliding sleeve body, its characterized in that: the inner wall of the sliding sleeve body is provided with a plurality of key protrusions I and key protrusions II at intervals along the axial direction around the circumference, a key groove I is formed between the key protrusions I, a key groove II is formed between the key protrusions II, the key protrusions I are aligned with the key groove II, and the key protrusions II are aligned with the key groove I. The utility model has the advantages of being scientific and reasonable in design, can effectively fall the lubricated effect that promotes the sliding sleeve, reduce the protruding wearing and tearing of sliding sleeve inner key, still prolong the life of sliding sleeve.

Description

Asymmetric key groove type sliding sleeve for clutch release bearing

Technical Field

The utility model belongs to bearing accessories especially relates to clutch release bearing uses asymmetric keyway formula sliding sleeve.

Background

The clutch release bearing unit is one of the important components in an automotive clutch system. The clutch is engaged and disengaged through the axial movement of the release bearing, so that the power connection between the engine and the transmission system is switched on or off, and the operations of starting, stopping, gear shifting and the like of the automobile are completed. Therefore, the requirements on the bearing unit are strict, and if the bearing is damaged, the operation of the automobile clutch is failed. The working environment of the clutch release bearing unit is quite severe, the clutch release bearing unit is always at high temperature, the average temperature is 120 ℃, and a cooling device is not used; in addition, the bearing runs at high speed during separation and is influenced by the radial centrifugal force and the torsional moment of axial direction, impact and high-speed rotation. The traditional clutch release bearing sliding sleeve adopts four types of cast steel, cast steel lining nylon, nylon and iron insert nylon. In order to improve the lubricating performance of three sliding sleeves, namely a cast steel lining nylon, nylon and an iron insert nylon, during working, a circular ring type or key groove type cavity for storing grease can be manufactured in the inner circle of the nylon sliding sleeve. The annular oil storage cavity has the defects that dust on a clutch friction plate is not easy to discharge after entering, and the later lubricating property is poor. The conventional keyway type oil storage cavity has the defects that the edges on two sides of the keyway are abraded quickly, so that the front and back sliding of the release bearing is not stable in the later period. In order to improve the deficiency of the nylon sliding sleeve, and further improve the lubricating effect and the wear resistance of the nylon sliding sleeve, the novel asymmetric key groove type sliding sleeve for the clutch release bearing is very necessary.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome prior art in the lubricated bad, the fast technical problem of wearing and tearing of bearing key slot type sliding sleeve later stage, provide a chip removal ability is good, lubricated effectual clutch release bearing uses asymmetric key slot type sliding sleeve.

The utility model provides a technical scheme that its technical problem adopted: clutch release bearing is with asymmetric keyway formula sliding sleeve, including iron inserts and sliding sleeve body, iron inserts cup joints and fixes on the sliding sleeve body, its characterized in that: the inner wall of the sliding sleeve body is provided with a plurality of key protrusions I and key protrusions II at intervals along the axial direction around the circumference, a key groove I is formed between the key protrusions I, a key groove II is formed between the key protrusions II, the key protrusions I are aligned with the key groove II, and the key protrusions II are aligned with the key groove I.

Preferably, the outer side of the sliding sleeve body is provided with a radial reinforcing boss.

The principle of the utility model is as follows: be equipped with protruding I of key and the protruding II of key on the sliding sleeve inner wall circumference, form keyway I and keyway II between the protruding I of key and the protruding II of key respectively, protruding I of key, the protruding II of key, keyway I and keyway II quantity equal, and length equals, and protruding I of key is corresponding with keyway II, and is parallel with the axis, and protruding II of key is corresponding with keyway I, also is parallel with the axis. Lubricating grease is filled in key grooves of the key groove I and the key groove II, the release bearing is installed behind a central sleeve of the input shaft of the transmission (the inner circle of the sliding sleeve is in contact with the central sleeve), and when the release bearing slides before and after working, the lubricating grease in the key groove I and the key groove II can lubricate the key protrusion I and the key protrusion II for a long time in real time. After dust of the clutch friction plate enters the key groove, the dust and polluted lubricating grease are discharged from key groove openings of the key groove I and the key groove II. The key protrusions are fully lubricated while the abrasion on the two sides of the key protrusions is reduced.

The utility model has the advantages that: the utility model has the advantages of being scientific and reasonable in design, can effectively fall the lubricated effect that promotes the sliding sleeve, reduce the protruding wearing and tearing of sliding sleeve inner key, still prolong the life of sliding sleeve.

Drawings

Fig. 1 is a schematic cross-sectional view of an asymmetric key groove type sliding sleeve for a clutch release bearing.

Detailed Description

Embodiment 1, it is right to combine fig. 1 below to explain further the utility model discloses, clutch release bearing is with asymmetric keyway formula sliding sleeve, including iron inserts 1 and the sliding sleeve body 2, the iron inserts cup joints on the sliding sleeve body, makes both combine together fixedly through the mode of pouring, and the sliding sleeve inner wall is equipped with protruding I3 of a plurality of keys and protruding II 4 of key respectively along the axial around the circumference, forms keyway I5 between the protruding I of key, forms keyway II 6 between the protruding II of key, and protruding I of key aligns keyway II, and protruding II of key align keyway I. In order to increase the radial strength, a radial reinforcing boss 7 is arranged on the outer side of the sliding sleeve body.

Claims (2)

1. Clutch release bearing uses asymmetric keyway formula sliding sleeve, including iron inserts (1) and sliding sleeve body (2), the iron inserts cup joints to be fixed on the sliding sleeve body, its characterized in that: the inner wall of the sliding sleeve body is provided with a plurality of key protrusions I (3) and key protrusions II (4) at intervals along the axial direction around the circumference, key grooves I (5) are formed between the key protrusions I, key grooves II (6) are formed between the key protrusions II, the key protrusions I align to the key grooves II, and the key protrusions II align to the key grooves I.

2. The asymmetric spline-type sliding sleeve for the clutch release bearing according to claim 1, wherein: the outer side of the sliding sleeve body is provided with a radial reinforcing boss (7).

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