CN211117064U

CN211117064U - Clamping ring type anti-loose fastening assembly

Info

Publication number: CN211117064U
Application number: CN201922108675.9U
Authority: CN
Inventors: 刘启超
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-07-28
Anticipated expiration: 2029-11-29

Abstract

A clamping ring type anti-loose fastening assembly belongs to the technical field of mechanical fastening, and comprises a bolt and a nut, and is characterized by also comprising a positioning clamping ring and an anti-loose clamping spring; the outer wall of the bolt is provided with a screw locking groove, and the inner wall of the nut is provided with a longitudinal inner clamping groove, an annular clamp spring groove and a longitudinal outer clamping groove; the longitudinal inner clamping grooves distributed annularly are called nut locking grooves; the outer side of the positioning clamping ring is directly provided with a nut clamping tenon, and the inner side of the positioning clamping ring is directly provided with a screw rod clamping tenon; the screw rod clamping tenon can also directly extend out and be arranged into a loading and unloading buckle, and the anti-falling clamp spring is a filter-ring-shaped elastic clamping piece; the anti-loosening nut has the beneficial effects that the bolt and the nut are clamped and fixed in a space formed by the nut locking groove and the screw rod locking groove through the positioning clamping ring, and the anti-loosening clamping spring is used for resisting against the positioning clamping ring to prevent the nut and the nut from falling off, so that the purpose of never loosening is realized; and is convenient for installation, disassembly and use; is suitable for use under special conditions such as high-frequency vibration.

Description

Clamping ring type anti-loose fastening assembly

Technical Field

The utility model belongs to the technical field of mechanical fastening, especially a locking fastening components of cassette formula.

Background

Screws are parts for tightly connecting mechanical devices, including bolts and nuts. The fastening of the nut and the bolt is generally relatively stable. However, if the fastened member is vibrated for a long time, the vibration frequency difference exists between the connecting members, so that each connecting member in the connecting structure can generate a certain displacement, the connection between the nut and the bolt becomes loose, and the stability and the safety of the connecting structure and the operation of the whole device are affected. Taking the fastening screw and the nut on the train track as an example, when a train passes through the track at a certain speed, the fastening screw and the nut on the track can generate vibration with a certain frequency, so that the fastening screw and the nut can generate certain displacement, and the connection is loosened, therefore, on the old train track, a maintainer needs to overhaul regularly.

From this, patent document CN108374827A discloses an anti-loosening bolt, the main structure of which includes a bolt and a screw, the bolt includes a bolt head and a screw rod, a groove and an expansion slot are provided in the end face of the screw rod, an internal thread is provided in the groove, and the screw is screwed into the groove through the internal thread and used in cooperation with the screw rod. The utility model discloses a can realize locking effect but fail to solve the life after longer, inside warp the problem that leads to the cooperation effect variation.

Thus, patent document CN109340243A discloses a novel lockbolt assembly, which includes a lockbolt, a locknut, claw disks (two sets), a snap ring, and a spring. The locking bolt and the locking nut are provided with four limiting holes, and the claw disc is connected with the locking bolt and the locking nut through the limiting holes respectively. Two circles of clamping grooves are formed above the claw disc, and a circle of teeth are arranged below the claw disc. And springs are arranged between the anti-loosening bolts and the anti-loosening nuts and between the claw discs. The clamping ring is arranged in the clamping groove of the claw disc and is used for limiting the screwing state and the service state respectively. In the process of screwing the anti-loose bolt and the anti-loose nut, the teeth at the lower part of the claw disc are folded in the bolt head and the nut; when the workpiece is in service, the teeth on the claw disc are embedded into the surface of the workpiece through an external load, the clamping ring and the spring are matched for use, so that the claw disc is always tightly attached to the workpiece, and the connecting part running in a vibration state is effectively connected and works safely and normally. However, this structure device still cannot prevent the nut from loosening due to long-term vibration of the fastened member, and the snap ring and the claw disk still loosen, so that the nut also loosens.

The applicant filed an invention patent with application number 2019108155520 on 2019, 8, 30, which is an improvement on the technology of the patent.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to above-mentioned technical problem, provide one kind with dead location rand of nut locking card and anticreep jump ring for even the location rand also can't drop under long-term vibration, and then make the nut unable not hard up, constitute the never loose screw fastener.

In order to solve the technical problem, the utility model provides an adopted technical scheme is a locking fastening components of cassette formula, including bolt and nut, its characterized in that still includes location rand and anticreep jump ring.

The bolt comprises a nut and a screw fixedly connected with the nut, the screw is a spline anti-loosening screw, namely an external thread is arranged on the screw, and a plurality of longitudinal strip grooves are annularly distributed on the external thread and are called as screw locking grooves.

The inner ring wall of the nut is divided into two parts, namely an inner layer inner ring wall and an outer layer inner ring wall, wherein the inner layer inner ring wall is provided with internal threads which are matched with the external threads on the screw rod and can be screwed and fastened; the inner diameter of the inner ring wall of the outer layer is larger than that of the inner ring wall of the inner layer, so that the anti-positioning clamping ring and the anti-falling clamping spring are convenient to arrange; the inner ring wall of the outer layer is sequentially provided with a longitudinal inner clamping groove, an annular clamp spring groove and a longitudinal outer clamping groove which are annularly distributed from inside to outside; the longitudinal inner clamping grooves distributed annularly are called nut locking grooves; the longitudinal outer clamping grooves distributed annularly are inlet and outlet channels of the positioning clamping ring.

The outer side of the positioning clamping ring is directly provided with a nut clamping tenon, and the inner side of the positioning clamping ring is directly provided with a screw rod clamping tenon; the structure specification of the nut clamping tenon is matched with the nut locking groove and is used for clamping the nut; the structural specification of the screw clamping tenon is matched with that of the screw locking groove and used for clamping the screw; the comprehensive effect is that the screw locking groove and the nut locking groove can be clamped simultaneously, and the dislocation between the screw locking groove and the nut locking groove is prevented; therefore, the nut and the screw rod can not be dislocated, and the purpose of preventing looseness is achieved.

The screw rod tenon can also directly extend out and be arranged into a loading and unloading buckle which is used for conveniently installing or unloading the positioning clamping ring.

The anti-falling clamp spring is a filter-shaped elastic clamping piece.

The screw may or may not be full of threads provided only on the outer side surface of the outer end portion.

The longitudinal elongate grooves on the outer side surface of the shank, i.e. the shank locking grooves, may extend from the outer end of the shank to the bottom end of the abutment nut, or may be provided only on the outer side surface of the outer end portion.

Preferably, the screw locking groove extends from the outer end of the screw to the bottom end, but does not extend through all of the external threads.

The screw locking grooves are arranged on the outer surface of the screw and can be uniformly distributed or non-uniformly distributed; on the premise of not influencing the spiral fastening effect of the external thread, the screw locking grooves are more and more beneficial; there may be 10 or 25 or more.

The nut locking grooves are provided with a plurality of grooves; the nut locking grooves can be uniformly distributed on the inner surface of the nut and can also be non-uniformly distributed.

The nut locking grooves and the screw locking grooves may be equal in number or different in number, and are preferably equal in number.

The number of the nut clamping tenons is the same as that of the nut locking grooves, and the number of the screw rod clamping tenons is the same as that of the screw rod locking grooves.

During the use, pass the bolt by the fastener, follow the other end with the nut from the outer end screw in of screw rod, until screwing up the nut, at this moment, nut locking groove and screw rod locking groove can constitute a locking space, then insert the location rand in the locking space to insert the nut trip in the nut locking groove, insert the screw rod trip in the screw rod locking groove, in the cyclic annular jump ring groove of anticreep jump ring cover cartridge on the nut, just so equipped this kind of locking fastening components of ring type. In the long-term use process, because the positioning clamping ring is clamped in the nut locking groove and the screw rod locking groove, the anti-falling clamping spring supports against the positioning clamping ring, so that the positioning clamping ring can not fall off no matter how the fastener vibrates, and further the nut and the screw rod can not loosen, thereby realizing the purpose of never loosening.

When the positioning clamp ring needs to be maintained, the anti-falling clamp spring is hooked out by a tool, the assembling and disassembling buckle is hooked out, the positioning clamp ring is hooked out, and the nut is screwed out.

The utility model has the advantages that the bolt and the nut are clamped and fixed in the space formed by the nut locking groove and the screw rod locking groove through the positioning clamping ring, and the anti-drop clamping spring is used for supporting the positioning clamping ring to prevent the falling off, thereby realizing the purpose of never loosening; the assembly is also convenient to mount, dismount and use; the connection of the screw component realizes the connection characteristic of never loosening, fundamentally solves the loosening problem of screw connection, and is suitable for being used under special conditions such as high-frequency vibration and the like.

Drawings

Fig. 1 is a schematic view of an assembly structure of each component of the present invention.

Fig. 2 is a schematic structural diagram of the middle bolt of the present invention.

Fig. 3 is a schematic structural view of the nut of the present invention.

Fig. 4 is a schematic structural view of the middle positioning retainer ring of the present invention.

Fig. 5 is the structure schematic diagram of the anti-falling clamp spring of the utility model.

In the figure: 1. the bolt, 2, the nut, 3, the positioning retainer ring, 4, the anti-falling clamp spring, 5, the nut, 6, the screw, 7, the external thread, 8, the screw locking groove, 9, the longitudinal inner clamping groove, namely the nut locking groove, 10, the annular clamp spring groove, 11, the longitudinal outer clamping groove, 12, the nut clamping tenon, 13, the screw clamping tenon, 14, the loading and unloading buckle and 15, the fastened piece.

Detailed Description

The present invention is further described with reference to the following examples, which are intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Example 1.

As shown in the figure, the clamping ring type anti-loosening fastening assembly comprises a bolt 1 and a nut 2, and the embodiment also particularly manufactures a positioning clamping ring 3 and an anti-loosening clamping spring 4.

Conventionally bolt 1 includes nut 5 and the fixed screw rod 6 of connecing on the nut, be equipped with external screw thread 7 on the screw rod 6, this embodiment is in be equipped with a plurality of longitudinal rectangular grooves, be called screw rod locking groove 8 on the external screw thread 7 for the annular cloth.

The inner ring wall of the nut 2 is divided into two parts, namely an inner layer inner ring wall and an outer layer inner ring wall, wherein the inner layer inner ring wall is provided with internal threads which are matched with the external threads on the screw 6 and can be screwed and fastened; the inner diameter of the inner ring wall of the outer layer is made larger than that of the inner ring wall of the inner layer, so that the anti-placement positioning clamping ring 3 and the anti-falling clamping spring 4 are convenient; the inner ring wall of the outer layer is sequentially provided with a longitudinal inner clamping groove 9, an annular clamp spring groove 10 and a longitudinal outer clamping groove 11 which are distributed annularly from inside to outside; the longitudinal inner clamping grooves which are distributed annularly are called as nut locking grooves 9; the longitudinal external clamping grooves 11 distributed in an annular shape are access passages of the positioning clamping ring 3.

The outer side of the positioning clamping ring 3 is directly provided with a nut clamping tenon 12, and the inner side is directly provided with a screw rod clamping tenon 13; the structural specification of the nut clamping tenon 12 is matched with that of the nut locking groove 9 and is used for clamping the nut 2; the structural specification of the screw clamping tenon 13 is matched with that of the screw locking groove 8 and is used for clamping the screw 6; the comprehensive effect is that the screw locking groove 8 and the nut locking groove 9 can be clamped simultaneously, and the dislocation between the screw locking groove 8 and the nut locking groove 9 is prevented; therefore, the nut 2 and the screw 6 can not be displaced, thereby achieving the purpose of preventing looseness.

And the anti-falling clamp spring 4 is made into a ring filter-shaped elastic clamp piece.

Example 2.

As shown in the figure, on the basis of embodiment 1, the screw tenon 13 extends outwards and directly extends out and is arranged as a loading and unloading buckle 14, and the loading and unloading buckle 14 is used for facilitating the installation or the unloading of the positioning collar 3.

The number of the nut clamping tenons 12 is equal to that of the nut locking grooves 9, and the number of the screw clamping tenons 13 is equal to that of the screw locking grooves 8.

When the anti-loosening fastening assembly is used, the bolt 1 penetrates through the fastened piece 15, the nut 2 is screwed in from the outer end of the screw rod 6 from the other end until the nut 2 is screwed, at the moment, the nut locking groove 9 and the screw rod locking groove 8 form a locking space, then the positioning clamping ring 3 is inserted into the locking space, the nut clamping tenon 12 is inserted into the nut locking groove 9, the screw rod clamping tenon 13 is inserted into the screw rod locking groove 8, and the anti-loosening clamping spring 4 is sleeved and inserted into the annular clamping spring groove 10 on the nut 2, so that the anti-loosening fastening assembly of the clamping ring type is assembled. In the long-term use process, because location rand 3 blocks in nut locking groove 9 and screw rod locking groove 8, anticreep rand 4 has supported location rand 3, is shaken no matter how so by fastener 15 like this, and location rand 3 can't drop, and then just can't become flexible between nut 2 and the screw rod 6 to the realization is never not hard up.

When the maintenance is needed, the anti-drop snap spring 4 is hooked out by a tool, the assembling and disassembling buckle 14 is hooked out, the positioning retainer ring 3 is hooked out, and the nut 2 is screwed out.

Claims

1. A clamping ring type anti-loose fastening assembly comprises a bolt and a nut, and is characterized by also comprising a positioning clamping ring and an anti-loose clamping spring;

the bolt comprises a nut and a screw fixedly connected to the nut, the screw is provided with an external thread, and a plurality of longitudinal strip grooves which are called screw locking grooves are annularly distributed on the external thread;

the inner ring wall of the nut is divided into two parts, namely an inner layer inner ring wall and an outer layer inner ring wall, and internal threads are arranged on the inner layer inner ring wall; the inner diameter of the inner annular wall of the outer layer is larger than that of the inner annular wall of the inner layer; the inner ring wall of the outer layer is sequentially provided with a longitudinal inner clamping groove, an annular clamp spring groove and a longitudinal outer clamping groove which are annularly distributed from inside to outside; the longitudinal inner clamping grooves distributed annularly are called nut locking grooves;

the outer side of the positioning clamping ring is directly provided with a nut clamping tenon, and the inner side of the positioning clamping ring is directly provided with a screw rod clamping tenon; the structural specification of the nut clamping tenon is matched with that of the nut locking groove; the structural specification of the screw rod clamping tenon is matched with the screw rod locking groove.

2. A collar anti-loose fastener assembly according to claim 1, wherein said screw lugs extend directly and are configured as make-up shackles.

3. The collar-type anti-loose fastening assembly according to claim 2, wherein the anti-loose clamp spring is a ring filter-like elastic clamp.

4. A collar anti-loose fastener assembly according to claim 3, wherein the threads on said screw are full of outside surface.

5. A collar anti-loose fastener assembly according to claim 3, wherein the threads on the screw are provided only on the outer side surface of the outer end portion.

6. A collar anti-loose fastener assembly according to claim 3, wherein the screw lock slot extends from an outer end of the screw to a bottom end of the abutment nut.

7. A collar anti-loose fastener assembly according to claim 3, wherein said screw locking groove is provided on an outer side surface of an outer end portion of the screw.

8. A collar type anti-loose fastening assembly according to claim 6 or 7, wherein the screw locking grooves are provided in a plurality of strips, and the screw locking grooves are uniformly distributed on the outer surface of the screw.

9. A collar lock-against-loosening fastening assembly according to claim 6 or 7, wherein the screw locking grooves are provided in a plurality of strips, and the screw locking grooves are unevenly distributed on the outer surface of the screw.

10. A collar anti-loose fastener assembly according to claim 8, wherein said nut lock slot has a plurality of strips; the nut locking grooves are uniformly distributed on the inner surface of the nut.

11. A collar anti-loose fastener assembly according to claim 9, wherein said nut lock slot has a plurality of strips; the nut locking grooves are unevenly distributed on the inner surface of the nut.

12. The bail type anti-loose fastening assembly of claim 10, wherein the nut locking slots are equal in number to the screw locking slots.

13. The bail type anti-loose fastening assembly of claim 11, wherein the nut locking slots are unequal in number to the screw locking slots.