CN210599902U

CN210599902U - Inner ring stop mechanism of hub bearing

Info

Publication number: CN210599902U
Application number: CN201921721179.4U
Authority: CN
Inventors: 彭绍文
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-05-22
Anticipated expiration: 2029-10-15

Abstract

The utility model provides a wheel hub bearing inner circle detent mechanism, including spindle nose, the wheel hub of taking spacing step face, wheel hub through establish at the wheel hub inner bearing of its inner chamber and wheel hub outer bearing suit on the spindle nose, wheel hub inner bearing carries out spacing on the spacing step face of spindle nose through bearing race butt, wheel hub outer bearing is fixed through lock nut locking, be interference fit between bearing race and the spindle nose and be connected, be clearance fit between wheel hub inner bearing and wheel hub outer bearing's inner circle and the spindle nose and be connected; the inner ring of the hub inner bearing and the bearing race limit the circumferential twisting of the hub inner bearing relative to the shaft head through a circumferential limiting structure between binding surfaces of the inner ring and the bearing race, and the inner ring of the hub outer bearing and the lock nut limit the circumferential twisting of the hub outer bearing relative to the shaft head through a circumferential limiting structure between the binding surfaces of the inner ring and the lock nut. The utility model provides a wheel hub bearing assembly maintenance difficulty, wheel hub bearing run interior circle, the unable adjustment of non-maintaining wheel hub bearing play and the high problem of spare part machining precision requirement.

Description

Inner ring stop mechanism of hub bearing

Technical Field

The utility model relates to an automobile structure technical field, concretely relates to wheel hub bearing inner circle detent mechanism.

Background

At present, the hub bearing at the wheel end of a rear axle in a commercial vehicle on the market generally adopts the following two modes:

wheel end Form(s) of	Inner bearing ring of hub Mode of matching with shaft head	Inner bearing ring of hub Stopping mode with shaft head	Hub outer bearing inner ring Mode of matching with shaft head	Hub outer bearing inner ring Stopping mode with shaft head
					General purpose Wheel end	Interference fit	Radial interference fit hoop Tension force	Over-fitting	Friction force of end face
Maintenance-free Protective wheel Terminal end	Clearance fit	Friction force of end face	Clearance fit	Friction force of end face

In the process of implementing the present invention, the inventor finds that at least the following disadvantages exist in the two existing locking methods:

1. the assembly and maintenance of the inner bearing of the wheel hub at the common wheel end are difficult, and the outer bearing of the wheel hub is easy to run out of the inner circle;

2. the inner ring of the inner bearing and the outer bearing of the wheel end hub without maintenance are directly contacted (or contacted by adding a spacer in the middle), the inner ring is stopped by the friction force of the end surface formed after the inner ring is pressed by the locking nut, the bearing game cannot be adjusted, and the processing precision requirement of related parts is very high.

Disclosure of Invention

In order to solve the problem that wheel hub bearing assembly maintenance difficulty, wheel hub bearing run interior circle, the unable adjustment of non-maintaining wheel hub bearing play and non-maintaining wheel hub spare part machining precision required height, the utility model provides a wheel hub bearing inner circle detent mechanism.

Therefore, the technical scheme of the utility model is that: the utility model provides a wheel hub bearing inner circle stop gear, is including taking spindle nose, the wheel hub of spacing step face, and wheel hub is through establishing the wheel hub inner bearing and the outer bearing suit of wheel hub in its inner chamber on the spindle nose, wherein: the inner circle of wheel hub inner bearing carries on spacingly on the spacing step face of spindle nose through the bearing race butt, and the bearing race presss from both sides and laminates each other between the inner circle of spacing step face and wheel hub inner bearing, and the inner circle of wheel hub outer bearing passes through lock nut locking fixed, its characterized in that:

the bearing race is connected with the shaft head in an interference fit manner, and the inner rings of the hub inner bearing and the hub outer bearing are connected with the shaft head in a clearance fit manner;

the inner ring of the hub inner bearing and the bearing race limit the circumferential twisting of the hub inner bearing relative to the shaft head through a circumferential limiting structure between binding surfaces of the inner ring and the bearing race, and the inner ring of the hub outer bearing and the lock nut limit the circumferential twisting of the hub outer bearing relative to the shaft head through a circumferential limiting structure between the binding surfaces of the inner ring and the lock nut.

Preferably, the circumferential limiting structure between the inner ring of the hub inner bearing and the joint surface of the bearing race is as follows: the binding surfaces of the inner ring of the bearing in the wheel hub and the bearing race are respectively provided with corresponding anti-rotation pin holes, and the anti-rotation pin holes are connected through stop pins or keys;

the circumference limit structure between the inner ring of the hub outer bearing and the binding surface of the lock nut is as follows: the inner ring of the outer bearing of the wheel hub and the binding surface of the locking nut are respectively provided with corresponding anti-rotation pin holes which are connected through stop pins or keys.

Preferably, the anti-rotation pin holes and the stop pins or the keys are provided with two groups and are uniformly distributed on the same circular ring.

Further, the circumference limit structure between the binding face of the inner circle of the wheel hub inner bearing and the bearing race is: one of the binding surfaces is provided with an anti-rotation boss, and the other binding surface is provided with a corresponding groove;

the circumference limit structure between the inner ring of the hub outer bearing and the binding surface of the lock nut is as follows: one of the binding surfaces is provided with an anti-rotation boss, and the other binding surface is provided with a corresponding groove.

Preferably, the anti-rotation bosses and the corresponding grooves are arranged in two groups and are uniformly distributed on the same circular ring.

Furthermore, sealing ring assemblies are respectively arranged among the bearing race, the locking nut and the shaft hole of the hub.

Has the advantages that:

the utility model discloses a set up to interference fit between bearing race and the spindle nose, make bearing race and spindle nose link into an organic whole, set up to clearance fit between the inner circle of wheel hub inner bearing and wheel hub outer bearing and the spindle nose, the installation and the dismantlement of wheel hub on the spindle nose of being convenient for are maintained, make things convenient for lock nut to adjust wheel hub bearing play; meanwhile, a circumferential limiting structure is arranged between the bearing race and the inner ring of the hub inner bearing, the inner ring of the hub outer bearing and the locking nut, so that the inner ring of the hub bearing is effectively prevented from being contacted with the shaft head to cause the hub bearing to run into the inner ring, the safety is ensured, and the service life of the hub and the shaft head is prolonged.

The adopted circumferential limiting structure is as follows: the anti-rotation pin holes are matched with the stop pins or the keys, and the anti-rotation bosses are matched with the grooves, so that the anti-rotation lock is convenient to process, low in manufacturing cost and convenient to mount and dismount; and this kind of circumference is injectd the structure and is established between the binding face, can not increase the "leakage point" of lubricated seal structure between current spindle nose and the wheel hub shaft hole.

The cooperation structure that two sets of circumference were injectd is selected, and the symmetry sets up, and strength is balanced, and is more firm, can not appear wrench movement, and the effect is better.

Compared with the prior art, the utility model has the advantages of:

1. compared with the common wheel end, the wheel end is convenient and quick to assemble and maintain;

2. the problem that the hub bearing runs into the inner circle is solved;

3. the wheel hub bearing play is convenient to adjust;

4. the hub parts are processed more efficiently and economically.

Drawings

Fig. 1 is a schematic view of the installation structure of the present invention.

Fig. 2 is an exploded view of the bearing race and hub inner bearing circumferential direction limiting structure of the present invention.

Fig. 3 is an exploded view of the circumferential limiting structure of the hub outer bearing and the lock nut of the present invention.

Fig. 4 is an exploded view of the bearing race and hub inner bearing circumferential direction limiting structure of the present invention.

Fig. 5 is an exploded view of the circumferential limiting structure of the hub outer bearing and the lock nut of the present invention.

Shown in the figure: 1. a shaft head; 2, a hub; 3. a hub inner bearing; 3-1, an inner ring of the hub inner bearing; 4. A hub outer bearing; 4-1, an inner ring of the hub outer bearing; 5. a bearing race; 6. locking the nut; 7-1, a first anti-rotation pin hole; 7-2, a second anti-rotation pin hole; 8. a first stop pin; 9. A second stop pin; 10. a first anti-rotation boss; 11. a first groove; 12. a second anti-rotation boss; 13. a second groove; 14. a seal ring assembly.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings, but the embodiment should not be construed as limiting the present invention.

It should be noted that: the spindle nose referred to in this application, also called semi-axis sleeve or hub axle tube, is defined as the spindle nose in the utility model discloses.

The utility model discloses as shown in fig. 1 to 5:

the utility model provides a wheel hub bearing inner circle stop gear, is including taking spindle nose 1, wheel hub 2 of spacing step face, and wheel hub 2 is through establishing the wheel hub inner bearing 3 and the 4 suits of wheel hub outer bearing on the spindle nose at its inner chamber, wherein: an inner ring 3-1 of the hub inner bearing is abutted against a limiting step surface of the shaft head through a bearing race 5 for limiting, the bearing race comprises a radial contact surface and an axial contact surface which are matched with the limiting step surface, the radial contact surface of the bearing race 5 is clamped between the limiting step surface and the inner ring of the hub inner bearing 3 and is mutually attached, an inner ring 4-1 of the hub outer bearing is locked and fixed through a locking nut 6, the axial contact surface of the bearing race 5 is in interference fit connection with the shaft head 1, and the inner ring 3-1 of the hub inner bearing and the inner ring 4-1 of the hub outer bearing are in clearance fit connection with the shaft head 1;

the inner ring 3-1 of the hub inner bearing and the bearing race 5 limit circumferential twisting of the hub inner bearing 3 relative to the shaft head 1 through a circumferential limiting structure between binding surfaces of the inner ring and the bearing race, and the inner ring 4-1 of the hub outer bearing and the lock nut 6 limit circumferential twisting of the hub outer bearing 4 relative to the shaft head 1 through a circumferential limiting structure between binding surfaces of the inner ring and the bearing race.

The circumferential limiting structure between the binding surfaces of the inner ring 3-1 of the inner bearing of the hub and the bearing race 5 is as follows: two groups of anti-rotation pin holes I7-1 arranged on the same circular ring are symmetrically arranged at the upper part and the lower part of the binding surface of an inner ring 3-1 of a bearing in the hub and a bearing seat ring 5, and each group of anti-rotation pin holes I are connected through a stop pin I8 or a key; the circumferential limiting structure between the inner ring 4-1 of the hub outer bearing and the binding surface of the lock nut 6 is as follows: two groups of anti-rotation pin holes 7-2 arranged on the same circular ring are symmetrically arranged on the upper and lower sides of the binding surface of the inner ring 4-1 of the outer bearing of the hub and the locking nut 6, and each group of anti-rotation pin holes are connected through a stop pin II 9 or a key.

The circumferential limiting structure between the binding surfaces of the inner ring 3-1 of the inner bearing of the hub and the bearing race 5 is as follows: one of the binding surfaces is provided with a first anti-rotation boss 10, the other binding surface is provided with a corresponding first groove 11, and the two groups of the combination are uniformly distributed on the same circular ring; the circumferential limiting structure between the inner ring 4-1 of the hub outer bearing and the binding surface of the lock nut 6 is as follows: one of the binding surfaces is provided with a second anti-rotation boss 12, the other one is provided with a corresponding second groove 13, and the two groups of the combination are uniformly distributed on the same ring.

And sealing ring assemblies 14 are respectively arranged among the bearing race 5, the locking nut 6 and the shaft hole of the hub and are used for lubricating and sealing bearing oil (grease).

The locknut 6 adopts a locknut in a commercial vehicle driving or non-driving axle wheel end locking and anti-loosening mechanism with an applicant authorization notice number of CN 209146115U.

Those skilled in the art will appreciate that the details of the present invention are not described in detail herein.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a wheel hub bearing inner circle stop gear, is including taking spindle nose, the wheel hub of spacing step face, and wheel hub is through establishing the wheel hub inner bearing and the outer bearing suit of wheel hub in its inner chamber on the spindle nose, wherein: the inner circle of wheel hub inner bearing carries on spacingly on the spacing step face of spindle nose through the bearing race butt, and the bearing race presss from both sides and laminates each other between the inner circle of spacing step face and wheel hub inner bearing, and the inner circle of wheel hub outer bearing passes through lock nut locking fixed, its characterized in that:

2. A hub bearing inner race stop mechanism according to claim 1, wherein:

the circumference limit structure between the binding face of the inner ring of the inner bearing of the wheel hub and the bearing race is as follows: the binding surfaces of the inner ring of the bearing in the wheel hub and the bearing race are respectively provided with corresponding anti-rotation pin holes, and the anti-rotation pin holes are connected through stop pins or keys;

3. A hub bearing inner race stop mechanism according to claim 2, wherein: the anti-rotation pin holes and the stop pins or the keys are provided with two groups and are uniformly distributed on the same ring.

4. A hub bearing inner race stop mechanism according to claim 1, wherein:

the circumference limit structure between the binding face of the inner ring of the inner bearing of the wheel hub and the bearing race is as follows: one of the binding surfaces is provided with an anti-rotation boss, and the other binding surface is provided with a corresponding groove;

5. A hub bearing inner race stop mechanism according to claim 4, wherein: the anti-rotation bosses and the corresponding grooves are arranged in two groups and are uniformly distributed on the same circular ring.

6. A hub bearing inner race stop mechanism according to any one of claims 1 to 5, wherein: and sealing ring assemblies are respectively arranged among the bearing race, the locking nut and the shaft hole of the hub.