CN219432261U - Anti-creep integrated nut structure of axle, hub and vehicle - Google Patents

Abstract

The anti-creep integrated nut structure of the axle, the hub and the vehicle are characterized in that the outer wall of the lock nut is provided with a flange, and the flange is provided with an anti-loosening hole penetrating axially; a limiting groove is formed in the inner end face of the lock nut, a gasket is accommodated in the limiting groove, the gasket is tightly attached to the outer bearing under the axial pushing of the lock nut, and a limiting hole is formed in a sheet body of the gasket; the anti-loose snap ring is provided with an anti-loose hook which is clamped in the limiting hole after passing through the anti-loose hole. The moment is applied to the gasket by the locking nut so as to axially push the gasket to press the outer bearing, so that the stability of the position of the outer bearing is maintained, the axial movement of the bearing can be prevented, and the peristaltic effect of an axle is reduced; simultaneously, the degree of freedom of the locking nut is limited through the fixing clamp spring at the outer side of the locking nut, and the locking nut can be synchronously disassembled with the hub when the nut is disassembled, so that the possibility that the oil seal is damaged in the process of disassembling the hub is reduced.

Description

Anti-creep integrated nut structure of axle, hub and vehicle

Technical Field

The utility model relates to the field of automobile mechanical parts, in particular to an axle anti-creep integrated nut structure, a hub and a vehicle.

Background

At present, the existing vehicle hub has the phenomenon that the inner ring of the bearing axially moves relative to the shaft head. The relative movement of the bearing and the shaft head can lead to the abrasion of the shaft head, thereby polluting lubricating oil; contaminated lubricating oil can lead to failure of the oil seal after contacting the oil seal, and meanwhile, contaminated lubricating oil can also lead to failure of the bearing, and finally, damage and failure of the hub are caused.

Chinese patent CN 201820840041.5 discloses a hub unit, disclosed in paragraph 0034 of its specification and fig. 2 thereof: the spindle head nut can generate a certain amount of abrasion due to the sliding rotation of the bearing inner ring, the bearing clearance can be increased along with the increase of the running time of the vehicle, and the service life of the hub unit can be directly influenced due to the overlarge variation of the bearing clearance. The solution is to add wear-resistant gaskets between the spindle head nuts and the bearings to increase friction.

In this and similar prior art solutions, the wear-resistant pad is in contact with the bearing, but the bearing has no limit structure; the spindle head nut and the wear-resistant gasket have no connection relation, the anti-loose performance is not enough, the nut is easy to loosen after a period of use, and the tightening force of the spindle head is not enough; the outer side of the spindle head nut is also of an infinite position structure, so that axial movement is easy to generate; the bearing play fluctuation is easy to be caused to be larger during manual installation; because the parts are more and not integrated, the disassembly and the installation of the shaft head and the maintenance of the hub are inconvenient.

Disclosure of Invention

The utility model aims to solve the existing problems and aims to provide an axle anti-creep integrated nut structure, a hub and a vehicle.

In order to achieve the aim, the technical scheme adopted by the utility model provides an anti-creep and easy-to-assemble and disassemble axle anti-creep integrated nut structure, which comprises a lock nut, an anti-loosening snap ring, a gasket and a fixed snap ring, wherein the lock nut is fixedly connected with external threads of the outer wall of a shaft head through internal threads, the outer wall of the shaft head is also connected in a small gap in a hub through an inner bearing and an outer bearing respectively, the outer wall of the lock nut is provided with a flange, and the flange is provided with an anti-loosening hole which axially penetrates through; the inner end surface of the locking nut is provided with a limit groove, a gasket can be accommodated in the limit groove, the outer end surface of the gasket is clung to the inner end surface of the locking nut, the inner end surface of the gasket is clung to the outer end of the outer bearing under the axial pushing of the locking nut, and a limit hole is formed in a sheet body of the gasket; the anti-loosening device further comprises an anti-loosening snap ring fixed on the outer wall of the lock nut, wherein an anti-loosening hook is arranged on the anti-loosening snap ring, and the anti-loosening hook is clamped in the limiting hole after penetrating through the anti-loosening hole, so that the relative fixed connection of the anti-loosening snap ring, the anti-loosening snap ring and the limiting hole is formed; the fixed jump ring is fixed at the wheel hub inner wall to restrict the degree of freedom of lock nut towards the outside. In some embodiments, the flange has a plurality of limiting plates extending axially inward, and a space between an inner wall of the limiting plates and an inner end surface of the lock nut forms a limiting groove.

In some embodiments, the gasket is annular, the inner ring of the gasket is provided with a limiting tongue extending radially inwards, the outer wall of the shaft head is provided with a fixing groove, and the limiting tongue is inserted into the fixing groove to prevent relative circumferential rotation.

In some embodiments, the plurality of retaining holes of the spacer are circumferentially distributed at the edge of the spacer body.

In some embodiments, the size and shape of the limiting hole edge are matched with the anti-loose hook.

In some embodiments, the anti-loose snap ring is provided with a break that forms a snap end that can radially distract the ring body.

In some embodiments, the outer wall of the lock nut is provided with a clamping groove, and the anti-loose clamp ring can be sleeved in the clamping groove and fixed after being spread.

In some embodiments, the hook body of the locking hook extends axially inward, and the end of the hook body extends radially to form a curved portion that can grasp the rim of the limiting aperture.

In some embodiments, the surface of the lock nut is coated with a teflon coating.

In some embodiments, the fixing clamp spring can ensure that the hub moves outwards together with the nut when the hub is disassembled along with the outward rotation and loosening of the locking nut, and the hub is disassembled when the nut is disassembled.

The utility model also provides a hub comprising any one of the anti-creep structure for the axle.

The utility model also provides a vehicle, wherein the wheel hub of the vehicle comprises any one of the anti-creep structure of the axle. Compared with the prior art, the utility model can apply force to the gasket through the locking nut so as to push the gasket to compress the outer bearing along the axial direction, thereby keeping the position stable; the locking hook limits the relative rotation of the locking nut and the gasket in the circumferential direction, so that the axial movement of the bearing can be prevented, and the peristaltic effect of the axle is reduced.

The degree of freedom of the locking nut is limited by a fixing clamp spring at the outer side of the locking nut, and the nut is fixed in the hub; when the hub is disassembled, the hub can be disassembled while the nut is disassembled only by continuously rotating the nut outwards. Because the hub moves in parallel along the axial direction, the possibility of damage of the oil seal in the process of disassembling the hub is greatly reduced in the disassembling process, and therefore maintenance cost is reduced.

When the nut is installed, the nut is only required to be screwed to a fixed torque, and the nut is not required to be locked and then is retracted for alignment; the lock nut is integrated on the hub, so that the transportation cost is saved; the surface of the locking nut is coated with the Teflon coating, so that friction loss can be reduced, and locking torque can be increased.

Drawings

FIG. 1 is a schematic diagram illustrating the disassembly of an embodiment of the present utility model;

FIG. 2 is a split schematic of an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of an embodiment of the present utility model;

referring to the attached drawings, a hub 1, an outer bearing 2, an inner bearing 3, a spacer bush 4, a gasket 5, a limiting hole 51, a limiting tongue 52, a locking nut 6, a locking hole 61, a limiting groove 62, a clamping groove 63, a fixing clamp spring 7, a locking clamp ring 8, a fracture 81, a locking hook 82 and a shaft head 9.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings. For ease of illustration, the hub is hereinafter referred to as "outboard" (left side of the page in fig. 3) and the hub is referred to as "inboard" (right side of the page in fig. 3) in the direction of the end cap. Referring to fig. 1 to 3, fig. 1 to 3 show an embodiment of the present utility model, in which a nut structure is integrated on a hub to form an anti-creep integrated nut structure, and the anti-creep integrated nut structure mainly includes a lock nut 6, a gasket 5, a locking snap ring 8 and a fixing snap ring 7.

Referring to fig. 1, the main body of the lock nut 6 is hexagonal, and is provided with an internal thread at the center. The lock nut 6 is fixedly connected with the external thread of the outer wall of the shaft head 9 through the internal thread, and the lock nut 6 can move along the axial direction of the shaft head 9 through a thread structure. The outer wall of the shaft head 9 also circumferentially rotates in the inner cavity of the hub 1 through the inner bearing 3 and the outer bearing 2 respectively to form small clearance fit, and the shaft head 9 can circumferentially rotate; a spacer bush 4 is also arranged between the outer wall of the shaft head 9 and the inner cavity of the hub 1.

The outer wall of the lock nut 6 is provided with a flange, and the flange is provided with a plurality of anti-loosening holes 61 which axially penetrate through; the inner end surface of the lock nut 6 is provided with a limit groove 62, and the space in the limit groove 62 is used for accommodating the gasket 5.

Further, referring to fig. 1, the flange of the lock nut 6 is provided at an edge thereof with a plurality of stopper plates extending axially inward and perpendicular to the inner end surface of the lock nut 6. The spacing grooves 62 are formed by the spaces between the inner walls of the plurality of spacing plates and the inner end surfaces of the lock nuts. The outer end face of the gasket 5 is tightly attached to the inner end face of the lock nut 6 in the limit groove 62, and the inner end face of the gasket 6 can be tightly attached to the outer end face of the outer bearing 2 under the axial pushing of the lock nut 6 so as to limit the outer end face. The sheet body of the gasket 5 is provided with a plurality of limiting holes 51.

The anti-loosening device further comprises an anti-loosening snap ring 8 sleeved on the outer wall of the lock nut 6, an anti-loosening hook 82 is arranged on the anti-loosening snap ring 8, a hook body of the anti-loosening hook 82 extends inwards along the axial direction, and the end part of the hook body extends outwards along the radial direction to form a bending part capable of grabbing the limiting hole 51.

Further, a fracture 81 is arranged on the ring body of the anti-loose snap ring 8 to form a snap end; so that the whole body is in a C shape with a smaller opening. The locking snap ring 8 can be forcibly spread in the radial direction from the clamping end, and can be sleeved into the clamping groove 63 on the outer wall of the locking nut 6 after the ring body is expanded. The clamping grooves 63 on the outer wall of the lock nut 6 are respectively positioned at the top angles of the hexagonal cross sections, the locking snap ring 8 is propped open and sleeved in the clamping grooves 63 after the locking hooks 82 are installed, and then the ring body is reset to complete fixation.

Preferably, the limiting holes 51 of the gasket 5 are uniformly distributed at the edge of the sheet body of the gasket 5 along the circumference, and the size and the shape of the limiting holes are matched with the end parts of the anti-loose hooks 82. After the anti-loose hook 82 passes through the anti-loose hole 61, the anti-loose hook is clamped into and grabs the limiting hole 51 to form mutual matching, and the fixed connection of the three is completed.

In use, after the hub 1 is assembled, the gasket 5 is firstly installed, and the inner end surface of the gasket 5 is pressed against the outer end surface of the outer bearing 2; and then installing the lock nut 6 to press the sheet body of the gasket 5 into the limit groove 62. Then installing a locking clamp ring 8, expanding the clamping end of the locking clamp ring 8, simultaneously extending a locking hook 82 of the locking clamp ring 8 into a limiting hole 51 of a gasket through a locking hole 61 of a locking nut 6, sleeving the expanded locking clamp ring 8 onto a clamping groove 63 of the locking nut 6, and then loosening the clamping end, wherein the locking clamp ring 8 is sleeved on the outer wall of the locking nut 6; and finally, installing a fixed snap spring 7, and installing the fixed snap spring 7 into a snap spring groove on the inner wall of the cavity of the hub 1.

The inner end surface of the fixing clamp spring 7 is in contact with the outer end surface of the flange of the lock nut 6, so that the freedom degree of the lock nut 6 moving towards the outer side is limited, and the lock nut 6 can be prevented from loosening in the transportation process. Simultaneously, when the hub 1 is disassembled, the hub 1 can be ensured to axially move outwards along with the integrated nut structure while the locking nut 6 is loosened, so that the synchronous disassembly of the integrated nut structure and the hub is realized.

Further, as a product, the hub 1 and the lock nut 6 have been conventionally transported separately; the packaging structure of the lock nut 6 and the hub 1 needs to be considered in the transportation process so as to ensure that the lock nut 6 and the hub 1 cannot collide. And after the lock nut 6 is integrated on the hub 1 as in the scheme, the lock nut 6 is ensured not to collide, and meanwhile, the bearing inside the hub 1 is ensured not to axially float, so that the material for additionally fixing the bearing in the normal transportation process is omitted, and the transportation cost is saved.

When the embodiment is transported to a customer, the customer firstly installs the hub 1 on the axle when assembling the integrated nut hub assembly, and then rotates the lock nut 6 to clamp the limit tongue 52 of the gasket 5 into the limit groove on the outer wall of the axle head 9; since the gasket 5 and the lock nut 6 are fixed together through the anti-loose snap ring 8, the gasket 5 can rotate along with the lock nut 6 only by rotating; and because the gasket 5 and the shaft head 9 are also relatively fixed, when the lock nut 6 rotates, the shaft head 9 rotates together.

The limiting holes 51 circumferentially arranged on the gasket 5 can ensure that the anti-loosening hooks 82 of the anti-loosening clamp ring 8 can be clamped on the limiting holes 51 under any condition after the lock nut 6 is screwed down, and the lock nut 6 is not required to be retracted and aligned, so that the installation of a user is facilitated, and stepless adjustment is realized.

After the installation is completed, the gasket 5 is arranged on the shaft head 9, and the limit tongue 52 on the gasket 5 is clamped on the limit groove of the shaft head 9, so that the gasket 5 and the shaft head 9 cannot perform relative rotation; the gasket 5 is arranged between the lock nut 6 and the bearing, and the lock nut 6 is fixed on the outer wall of the shaft head 9 through threads. When the outer end surface of the spacer 5 contacts the outer bearing 2, the lock nut 6 is further rotated inward to apply a proper tightening torque, and the lock nut 6 can apply an axial pressing force to the spacer 5, thereby transmitting the pressing force to the pressed outer bearing 2, so that the outer bearing 2 cannot move in the axial direction. Referring to fig. 3, the shaft head is provided with an outward protruding step at the inner end surface of the inner bearing 3, and can cooperate to limit the inner bearing 3.

After the tightening torque reaches the design requirement, the lock nut 6 locks the outer bearing 2, and relative circumferential rotation movement cannot occur between the gasket 5 and the outer bearing 2, and relative rotation movement cannot occur between the gasket 5 and the lock nut 6, which means that relative movement cannot occur between the lock nut 6 and the shaft head 9 after tightening, so that an anti-creep structure is formed.

Preferably, the outer surface of the lock nut 6 is preferably coated with a teflon coating to change surface friction, so that friction loss of the lock nut 6 is reduced, more pretightening force can be generated under the same locking moment, and further the pressing force on the outer bearing 2 is larger, and the anti-loosening effect is better.

In the disassembly process, only the lock nut 6 is required to be reversely rotated, and the outer end surface of the lock nut 6 pushes the fixing clamp spring 7 to move outwards along the axis direction. Because the edge of the fixed snap spring 7 is fixed in the snap spring groove on the inner wall of the hub 1, the fixed snap spring 7 pushed by the lock nut 6 can pull the whole hub 1 to synchronously move outwards along the axis direction, and the oil seal also moves along the axis direction of the shaft tube along with the hub 1, so that the disassembly is finally completed. The whole disassembling process can not damage the oil seal structure, and the possibility of damage of the oil seal in the disassembling process is reduced.

In addition, the utility model also provides a hub 1 comprising any of the axle integrated nut structures. The utility model further provides a vehicle, wherein the hub 1 of the wheel comprises any axle integrated nut structure. The scheme and effect of the two are the same as those of the previous embodiment, so that the description is omitted.

The embodiments of the present utility model have been described above with reference to the accompanying drawings and examples, which are not to be construed as limiting the utility model, but rather as modifications, variations or adaptations thereof may be made by those skilled in the art within the scope of the appended claims.

Claims (10)

1. The utility model provides an integrated nut structure of axletree anti-creep, includes lock nut, anti-loose snap ring, gasket and fixed jump ring, and lock nut passes through the external screw thread fixed connection of internal thread and spindle nose outer wall, and the spindle nose outer wall is still connected its characterized in that in the wheel hub little clearance through inner bearing, outer bearing respectively: the outer wall of the lock nut is provided with a flange, and the flange is provided with an anti-loosening hole which axially penetrates through the flange; the inner end surface of the lock nut is provided with a limit groove, a gasket can be accommodated in the limit groove, the gasket is tightly attached to the outer bearing under the axial pushing of the lock nut, and a limit hole is formed in a sheet body of the gasket;

the anti-loosening clamp ring is fixed on the outer wall of the lock nut, and is provided with an anti-loosening hook which is clamped in the limiting hole after passing through the anti-loosening hole;

the fixed jump ring is fixed at the wheel hub inner wall to restrict the degree of freedom of lock nut towards the outside.

2. The axle anti-creep integrated nut structure as claimed in claim 1, wherein: the edge of the flange is provided with a plurality of limiting plates extending along the axial inner side, and a limiting groove is formed by the space between the inner walls of the limiting plates and the inner end surface of the locking nut.

3. The axle anti-creep integrated nut structure as claimed in claim 1, wherein: the gasket is annular, the inner ring of the gasket is provided with a limiting tongue extending radially inwards, the outer wall of the shaft head is provided with a fixing groove, and the limiting tongue is inserted into the fixing groove to prevent relative circumferential rotation.

4. The axle anti-creep integrated nut structure according to claim 1 or 3, characterized in that: the limiting holes of the gasket are circumferentially distributed at the edge of the gasket body and/or are sized to fit with the locking hooks.

5. The axle anti-creep integrated nut structure as claimed in claim 1, wherein: the anti-loose snap ring is provided with a fracture to form a snap-in end capable of radially expanding the ring body.

6. The axle anti-creep integrated nut structure as defined in claim 5, wherein: the outer wall of the lock nut is provided with a clamping groove, and the anti-loose clamping ring can be sleeved in the clamping groove and fixed after being spread.

7. The axle anti-creep integrated nut structure as claimed in claim 1, 5 or 6, wherein: the hook body of the anti-loose hook extends inwards along the axial direction, and the end part of the hook body extends along the radial direction to form a bending part capable of grasping the limiting hole.

8. The axle anti-creep integrated nut structure as claimed in claim 1, wherein: the surface of the lock nut is coated with a teflon coating.

9. A hub, characterized in that: an axle anti-creep integrated nut structure comprising any one of claims 1-8.

10. A vehicle, characterized in that: a wheel hub comprising an axle anti-creep integrated nut structure according to any one of claims 1-8.