CN215109954U

CN215109954U - High strength car axle fastener

Info

Publication number: CN215109954U
Application number: CN202120062385.XU
Authority: CN
Inventors: 李冬燕
Original assignee: Zhejiang Fuerjia Machinery Co ltd
Current assignee: Zhejiang Fuerjia Machinery Co ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-12-10
Anticipated expiration: 2031-01-11

Abstract

The utility model provides a high strength car axle fastener, it includes the nut, is fixed in screw rod, threaded connection on the nut in swivel nut and nut, cover on the screw rod are located the outer packing ring of swivel nut, the seal groove of annular indent is seted up to the terminal surface of nut, be provided with the inner seal circle in the seal groove, the one end of swivel nut peg graft in the seal groove and with inner seal circle conflict, the other end with nut fixed connection, one of them terminal surface of packing ring with the terminal surface of nut is contradicted, another terminal surface is fixed with swivel nut threaded connection's outer seal circle. The utility model discloses a form multiple sealed face between external seal circle and axle, external seal circle and packing ring, packing ring and nut, inner seal circle and the swivel nut to form dual threaded connection face through swivel nut and axle, swivel nut and screw rod, thereby reached the purpose that improves the fastening effect of fastener, be favorable to prolonging the life of fastener.

Description

High strength car axle fastener

Technical Field

The utility model belongs to the technical field of auto-parts's technique and specifically relates to a high strength car axle fastener is related to.

Background

The fastener is a mechanical part which is used for fastening connection and has extremely wide application. Currently, automotive axle fasteners are primarily high strength bolts and nuts. The high-strength bolt connection is an excellent steel structure connection form, and has the advantages of simple and convenient construction, easy disassembly and replacement, good stress, fatigue resistance, no looseness and the like. Wherein, the bolt mainly comprises screw rod and the nut of connection in screw rod one end, and the screw rod plays the effect of connecting and bearing load, and the life of screw rod plays decisive action to the life of bolt, and the nut plays the effect of carrying out circumference fixed connection with screw rod and instrument on the one hand, and on the other hand carries on spacingly to the screw in degree of depth of screw rod.

However, in the actual use process, as the nut is exposed outside the axle, corrosive media such as dust, water, corrosive liquid and the like easily penetrate into the positions between the nut and the outer surface of the axle and between the screw rod and the threaded hole of the axle, so that the bolt and the nut are damaged, the service life of the fastening piece is influenced, and the fastening piece is loosened after the surface of the screw rod is corroded, so that the normal fastening is influenced and needs to be improved.

SUMMERY OF THE UTILITY MODEL

To the not enough that exists among the prior art, the utility model provides a high strength car axle fastener, it has solved the corrosive medium that exists among the prior art and has influenced the problem of the fastening effect of fastener through the clearance between fastener and the axle easily.

According to the embodiment of the utility model, a high strength car axle fastener, it includes the nut, is fixed in screw rod, threaded connection on the nut in swivel nut and nut, cover on the screw rod are located the outer packing ring of swivel nut, the seal groove of annular indent is seted up to the terminal surface of nut, be provided with the inner seal circle in the seal groove, the one end of swivel nut peg graft in the seal groove and with the inner seal circle is contradicted, the other end with nut fixed connection, one of them terminal surface of packing ring with the terminal surface of nut is contradicted, another terminal surface is fixed with swivel nut threaded connection's outer sealing ring.

By adopting the technical scheme, when the axle is assembled, the threaded sleeve is in threaded connection with the threaded hole in the axle, the nut is abutted against the inner side surface of the axle, one end of the installed threaded sleeve extends out of the axle, then the outer sealing ring is in threaded connection with the outer end of the threaded sleeve, the outer sealing ring is abutted against the axle, then the screw rod is in threaded connection with the threaded sleeve and the nut, and the nut is abutted against the washer, the threaded sleeve and the inner sealing ring; after the assembly is completed, multiple sealing surfaces are formed between the outer sealing ring and the axle, between the outer sealing ring and the gasket, between the gasket and the nut, between the inner sealing ring and the threaded sleeve, so that the leakage of corrosive media is avoided, and the double-thread connecting surfaces are formed by the threaded sleeve, the axle, the threaded sleeve and the screw rod, so that the connecting stability of the fastener is enhanced, the purpose of improving the fastening effect of the fastener is achieved, and the service life of the fastener is prolonged.

The utility model discloses further set up to: the inner sealing ring and the outer sealing ring are both made of supermolecule rubber materials.

Through adopting above-mentioned technical scheme, rubber has better flexibility and corrosion resistance, still has the self-healing performance, can make interior sealing washer and external seal circle have better sealed effect.

The utility model discloses further set up to: the nut outer sleeve is provided with a rubber sleeve, the cross section of the rubber sleeve is in a convex shape, and one end of the screw rod extends out of the nut and is inserted into the rubber sleeve.

Through adopting above-mentioned technical scheme, can form the cavity of step form in the rubber sleeve to hold the tip of nut and screw rod, simultaneously, conflict with nut and axle through the both sides surface of rubber sleeve open end, can avoid the inboard corrosive medium of axle to the influence of fastener, thereby reached the purpose that improves the fastening effect of fastener, be favorable to prolonging the life of fastener.

The utility model discloses further set up to: and a viscose layer consisting of waterproof viscose is arranged on the end surface of the rubber sleeve close to the threaded sleeve.

Through adopting above-mentioned technical scheme, on rubber sleeve accessible viscose layer was fixed in the axle, further improved the leakproofness between rubber sleeve and the axle.

The utility model discloses further set up to: the nut and the screw rod are integrally formed, and the outer side surfaces of the nut and the screw rod are provided with boronizing layers.

By adopting the technical scheme, the corrosion resistance of the nut and the nut is favorably improved.

The utility model discloses further set up to: the swivel nut and nut integrated into one piece set up, just the outside surface uniform coating of swivel nut and nut has the anticorrosive cured layer of constituteing.

By adopting the technical scheme, the corrosion resistance of the screw sleeve and the screw cap can be improved.

Compared with the prior art, the utility model discloses following beneficial effect has: multiple sealing surfaces are formed between the outer sealing ring and the axle, between the outer sealing ring and the gasket, between the gasket and the nut, between the inner sealing ring and the threaded sleeve to avoid the leakage of corrosive media, and double threaded connection surfaces are formed by the threaded sleeve and the axle, between the threaded sleeve and the screw rod to strengthen the connection stability of the fastener, so that the purpose of improving the fastening effect of the fastener is achieved, and the service life of the fastener is prolonged.

Drawings

Fig. 1 is a schematic cross-sectional structural view of a fastener according to an embodiment of the present invention.

In the above drawings: 1. a nut; 11. a sealing groove; 12. an inner seal ring; 2. a screw; 3. a threaded sleeve; 4. a nut; 5. a boronizing layer; 6. an anticorrosive cured layer; 7. a gasket; 71. an outer sealing ring; 8. a rubber sleeve; 9. an adhesive layer.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.

As shown in figure 1, for the utility model discloses a high strength car axle fastener, including coaxial nut 1, screw rod 2, threaded connection the swivel nut 3 and the nut 4 on screw rod 2 of arranging. In order to improve the self corrosion resistance of the fastener, the nut 1 and the screw rod 2 are integrally formed, and the outer side surfaces of the nut 1 and the screw rod 2 are provided with the boronizing layer 5. The thread insert 3 and the nut 4 are integrally formed, and the outer side surfaces of the thread insert 3 and the nut 4 are uniformly coated with an anti-corrosion curing layer 6 consisting of components.

In order to improve the corrosion-resistant effect of the fastener arranged on the outer side of the axle, the end face of the nut 1 is provided with an annular concave sealing groove 11, and an inner sealing ring 12 is arranged in the sealing groove 11. One end of the screw sleeve 3 is inserted in the sealing groove 11 and is abutted against the inner sealing ring 12, and the other end is fixedly connected with the nut 4. Meanwhile, the threaded sleeve 3 is sleeved with a gasket 7, one end face of the gasket 7 is abutted to the end face of the nut 1, and the other end face is fixed with an outer sealing ring 71 in threaded connection with the threaded sleeve 3. Wherein, the inner seal ring 12 and the outer seal ring 71 are both made of supermolecule rubber materials.

When the axle is assembled, the threaded sleeve 3 is in threaded connection with a threaded hole in the axle, the nut 4 is abutted against the inner side surface of the axle, one end of the installed threaded sleeve 3 extends out of the axle, the outer sealing ring 71 is in threaded connection with the outer end of the threaded sleeve 3, the outer sealing ring 71 is abutted against the axle, the screw rod 2 is in threaded connection with the threaded sleeve 3 and the nut 4, and the nut 1 is abutted against the gasket 7, the threaded sleeve 3 and the inner sealing ring 12. After the assembly is completed, multiple sealing surfaces are formed among the outer sealing ring 71, the axle, the outer sealing ring 71, the gasket 7, the nut 1, the inner sealing ring 12 and the thread sleeve 3 to avoid the leakage of corrosive media, and double thread connecting surfaces are formed through the thread sleeve 3, the axle, the thread sleeve 3 and the screw rod 2 to strengthen the connecting stability of the fastener, so that the purpose of improving the fastening effect of the fastener is achieved, and the service life of the fastener is prolonged.

In order to improve the corrosion resistance effect of the fastener arranged on the inner side of the axle, the rubber sleeve 8 is sleeved outside the nut 4, the cross section of the rubber sleeve 8 is in a convex shape, and one end of the screw rod 2 extends out of the nut 4 and is inserted into the rubber sleeve 8. Meanwhile, the end face of the rubber sleeve 8 close to the threaded sleeve 3 is provided with a viscose layer 9 consisting of waterproof viscose, so that the rubber sleeve 8 is bonded and fixed on the axle. Install rubber sleeve 8 in fastener tip back, the step form cavity that forms in the rubber sleeve 8 can hold the tip of nut 4 and screw rod 2, simultaneously, contradict with nut 4 and axle through the both sides surface of 8 open ends of rubber sleeve, can avoid the inboard medium of corroding of axle to the influence of fastener to reach the mesh that improves the fastening effect of fastener, be favorable to prolonging the life of fastener.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The utility model provides a high strength car axle fastener which characterized in that: including nut (1), be fixed in screw rod (2), threaded connection on nut (1) are in swivel nut (3) and nut (4), the cover on screw rod (2) are located packing ring (7) outside swivel nut (3), seal groove (11) of annular indent are seted up to the terminal surface of nut (1), be provided with inner seal circle (12) in seal groove (11), the one end of swivel nut (3) peg graft in seal groove (11) and with inner seal circle (12) are contradicted, the other end with nut (4) fixed connection, one of them terminal surface of packing ring (7) with the terminal surface of nut (1) is contradicted, another terminal surface is fixed with outer sealing ring (71) of swivel nut (3) threaded connection.

2. A high strength automotive axle fastener as defined in claim 1, wherein: the inner sealing ring (12) and the outer sealing ring (71) are both made of supermolecular rubber materials.

3. A high strength automotive axle fastener as defined in claim 1, wherein: the nut (4) is sleeved with a rubber sleeve (8), the cross section of the rubber sleeve (8) is in a convex shape, and one end of the screw rod (2) extends out of the nut (4) and is inserted into the rubber sleeve (8).

4. A high strength automotive axle fastener as defined in claim 3, wherein: the end face, close to the threaded sleeve (3), of the rubber sleeve (8) is provided with a viscose layer (9) formed by waterproof viscose.

5. A high strength automotive axle fastener as defined in claim 1, wherein: nut (1) and screw rod (2) integrated into one piece set up, just the outside surface of nut (1) and screw rod (2) is provided with boronizing layer (5).

6. A high strength automotive axle fastener as defined in claim 1, wherein: the thread insert (3) and the nut (4) are integrally formed, and the outer side surfaces of the thread insert (3) and the nut (4) are uniformly coated with an anti-corrosion curing layer (6) consisting of a resin.