CN210118381U

CN210118381U - Long-life universal joint capable of exhausting and without oil leakage

Info

Publication number: CN210118381U
Application number: CN201920538935.3U
Authority: CN
Inventors: 周育江; 牛杰
Original assignee: Wanxiang Qianchao Co Ltd; Wanxiang Group Corp
Current assignee: Wanxiang Qianchao Co Ltd; Wanxiang Group Corp
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-02-28
Anticipated expiration: 2029-04-19

Abstract

The utility model discloses a can exhaust and long-life universal joint of no oil leakage, mainly include and set up the oil blanket between the axle journal of outer lane and bearing, the oil blanket is equipped with the skeleton, air discharge duct and sealed lip, the skeleton is L shape and cooperatees the installation with the outer lane, the sealed lip of setting in the oil blanket bottom is circular protrusion, be provided with the arc recess on the sealed fitting surface of oil blanket and cross, sealed lip mutually supports with the arc recess and forms buckle formula and be connected, it communicates the inside and external air discharge duct of bearing to have seted up in the oil blanket, a gas for discharging the inside production of bearing to the external world. The utility model optimizes the structural design of parts of the cross axle universal joint, thereby realizing the shortening of the development period and the reduction of the manufacturing cost; the design of buckle formula oil blanket can exhaust can effectually guarantee that the bearing is sealed, can in time get rid of the inside waste gas of bearing again, improves bearing operational environment, prolongs bearing life, through the utility model discloses an implement, the universal joint life-span can prolong 30%.

Description

Long-life universal joint capable of exhausting and without oil leakage

Technical Field

The utility model relates to an automobile parts's field, concretely relates to can exhaust and long-life universal joint that does not have oil leak.

Background

The existing universal joint structure has the following defects:

1. the oil seal structure is quite complex in design, and needs to be considered to be in contact fit with multiple positions, so that the oil seal material consumption is large, the mold structure is complex, the manufacturing period is long, and the production cost is high;

2. the oil seal lip is mostly designed into a V shape, and is actually in line contact with the matching surface of the cross shaft, so that the sealing effect is poor, the bearing is easy to leak oil, and the service life of the universal joint is influenced;

3. the matching degree of the manufacture and design of the whole bearing is difficult to reach a better level, so that the sealing design fails, and the universal joint cannot reach the theoretical design life;

4. the inside temperature of bearing can rise in the universal joint use to produce atmospheric pressure, the inside pressure that produces of bearing forces seal lip and contact surface separation, leads to the grease to spill, influences the universal joint life-span.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art existence, and provide a long-life universal joint that can exhaust and not have the oil leak.

The purpose of the utility model is accomplished through following technical scheme: this kind of can exhaust and long-life universal joint of no oil leakage mainly includes the cross, and four bearing overcoat of cross are equipped with the outer lane, are provided with round kingpin, its characterized in that between outer lane and the bearing: set up the oil blanket between the axle journal of outer lane and bearing, the oil blanket is equipped with the skeleton, exhaust duct and sealed lip, the skeleton is L shape and cooperatees the installation with the outer lane, the sealed lip of setting in the oil blanket bottom is circular protrusion, be provided with the arc recess on the sealed fitting surface of oil blanket and cross, sealed lip and arc recess mutually support and form the buckle formula and be connected, it has inside and external exhaust duct of intercommunication bearing to open in the oil blanket for with the inside gas that produces of bearing to external discharge.

Furthermore, a plurality of bent exhaust grooves are uniformly formed in the outer surface of the rubber of the oil seal, and the diameters of the exhaust grooves are extremely small.

The utility model has the advantages that:

1. the universal oil seal structure is simplified, the manufacturing cost is reduced, serialization can be formed according to the specification of the universal joint, and the design period is shortened;

2. the buckle type structure that the bulge of the sealing lip of the oil seal is matched with the groove on the cross shaft is designed, compared with the existing structure, the sealing contact area is increased, the impact of the air pressure in the bearing can be resisted, and the sealing stability is ensured;

3. but the design exhaust structure on the oil blanket, the effectual waste gas that produces of release bearing internal work avoids the seal lip to receive the impact, and can reduce the inside temperature of bearing during operation again through the exhaust, prolongs the life of bearing.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially enlarged schematic view of the connection between the oil seal and the groove.

Description of reference numerals: the device comprises a cross shaft 1, a bearing 2, an outer ring 3, a roller pin 4, an oil seal 5, a framework 6, an exhaust groove 7, a sealing lip 8 and a groove 9.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

example (b): as shown in the attached drawings, the long-life universal joint capable of exhausting air and avoiding oil leakage mainly comprises a cross shaft 1, an outer ring 3 is sleeved outside four bearings 2 of the cross shaft 1, and a circle of needle rollers 4 are arranged between the outer ring 3 and the bearings 2; an oil seal 5 is arranged between an outer ring 3 and a shaft neck of a bearing 2, the oil seal 5 is provided with a framework 6, an exhaust groove 7 and a sealing lip 8, the framework 6 is L-shaped and is installed in a matching manner with the outer ring 3, the sealing lip 8 arranged at the bottom of the oil seal 5 is in a circular protrusion, an arc-shaped groove 9 is arranged on a sealing matching surface of the oil seal 5 and a cross shaft 1, and the sealing lip 8 and the arc-shaped groove 9 are matched with each other to form a buckle type connection; the oil seal 5 is internally provided with an exhaust groove 7 which communicates the inside of the bearing 2 with the outside and is used for exhausting the gas generated inside the bearing 2 to the outside.

Preferably, a plurality of bent exhaust grooves 7 are uniformly formed in the outer surface of the rubber of the oil seal 5, the diameter of each exhaust groove 7 is extremely small, waste gas generated in the process of working inside the bearing 2 is discharged, grease in the oil seal 5 is prevented from leaking, the sealing lip 8 is prevented from being impacted, the temperature inside the bearing 2 in the process of working can be reduced through exhaust, and the service life of the universal joint is prolonged.

The utility model optimizes the structural design of parts of the cross axle universal joint, thereby realizing the shortening of the development period and the reduction of the manufacturing cost; the design of buckle formula oil blanket can exhaust can effectually guarantee that the bearing is sealed, can in time get rid of the inside waste gas of bearing again, improves bearing operational environment, prolongs bearing life, through the utility model discloses an implement, the universal joint life-span can prolong 30%.

It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.

Claims

1. The utility model provides a can exhaust and long-life universal joint of no oil leakage, mainly includes cross (1), and four bearing (2) overcoat of cross (1) are equipped with outer lane (3), are provided with round kingpin (4), its characterized in that between outer lane (3) and bearing (2): set up oil blanket (5) between the axle journal of outer lane (3) and bearing (2), oil blanket (5) are equipped with skeleton (6), air discharge duct (7) and sealed lip (8), skeleton (6) are L shape and cooperate the installation with outer lane (3), set up sealed lip (8) in oil blanket (5) bottom and be circular protrusion, be provided with arc recess (9) on the sealed fitting surface of oil blanket (5) and cross axle (1), sealed lip (8) and arc recess (9) mutually support and form the buckle formula and be connected, it has inside air discharge duct (7) with the external world of intercommunication bearing (2) to open in oil blanket (5), be used for discharging the inside gas that produces of bearing (2) to the external world.

2. The ventable and oil-leak-free long life universal joint of claim 1, wherein: and a plurality of bent exhaust grooves (7) are uniformly formed in the outer rubber surface of the oil seal (5).