CN212377081U

CN212377081U - Anti-loosening bolt and nut assembly

Info

Publication number: CN212377081U
Application number: CN202020819157.8U
Authority: CN
Inventors: 张大川
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2021-01-19
Anticipated expiration: 2030-05-14

Abstract

The utility model discloses a bolt, nut assembly that locking takes off, including bolt, threaded connection nut on the screw rod of bolt, be located the nut outer end is located the lug at screw rod top surface middle part, locate the first annular groove, the cover of nut outer end are in one end stretches into on the lug first annular groove with the fastener of the bottom surface butt of first annular groove, locate annular groove, the joint at annular groove lateral wall middle part are in with the restriction on the annular groove fastener axial displacement's jump ring. Compared with the prior art, the utility model provides a bolt, nut assembly that locking pine takes off, self-locking ability is strong, and difficult pine takes off, and fastening effect is better, and the reliability is high, has eliminated the potential safety hazard.

Description

Anti-loosening bolt and nut assembly

Technical Field

The utility model relates to a fastener technical field, more specifically say, relate to a bolt, nut component that locking takes off.

Background

With the development of society and the continuous progress of science and technology, the fastening combination of bolt and nut is widely applied to various industries in industrial production, and when the current nut and bolt are used in a matching way, a flat gasket and a spring cushion are usually added to increase the fastening effect and prevent loosening. The structure cannot play a role in preventing loosening fundamentally, the loosening prevention effect is not good enough, and accidents caused by loosening of the nut are numerous. In many pointed ends, war industry or railway bridge fields, the fastening requirement to bolt, nut subassembly is higher, in case take place to loosen, and the consequence is beyond the assumption, has certain potential safety hazard. Therefore, a bolt and a nut assembly which have a good fastening effect and can effectively prevent loosening are urgently needed to meet the needs of users.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the problem that exists among the prior art, provide a bolt, nut component that locking takes off to the nut that exists among the solution prior art loosens easily and takes off, fastens the not good problem of effect.

In order to achieve the above purpose, the technical scheme of the utility model is that:

the utility model provides a bolt, nut component that locking takes off, includes bolt, threaded connection nut on the screw rod of bolt, be located the nut outer end is located the lug at screw rod top surface middle part, is located the first annular groove, the cover of nut outer end one end stretches into on the lug first annular groove with the fastener of the bottom surface butt of first annular groove, locate annular groove, the joint at annular groove lateral wall middle part are in with the restriction on the annular groove fastener axial displacement's jump ring.

The clamping piece is provided with an axial through hole, the shape and the size of the axial through hole correspond to those of the convex block, and the clamping piece is sleeved on the convex block through the axial through hole so as to limit the rotation of the clamping piece.

The cross section of the lug is polygonal.

The cross section of the lug is square or rectangular.

The clamping piece comprises a main body, wherein the main body extends into the outer side wall at one end of the first annular groove and is provided with a convex ring extending radially.

The thickness of bulge loop with ring groove with the distance between the first annular groove bottom surface is corresponding, works as the jump ring is arranged in when ring groove, the bottom surface of jump ring with the top surface butt of bulge loop.

And a second annular groove is formed in the end face, close to the convex ring, of the main body, and the diameter of the second annular groove is larger than the outer diameter of the screw rod.

The side wall of the first annular groove is provided with a circle of grooves which are arranged at intervals on two sides of the annular clamping groove, the outer circumferential surface of the convex ring is provided with a bulge which is matched and clamped with the grooves, and the positions of the two grooves at the corresponding positions in the axial direction in the two circles of grooves are consistent.

And a gap is reserved between the axial through hole and the lug.

The bolt comprises a head, one end of the screw rod is vertically connected to one end of the head, and the lug is located at one end, far away from the head, of the screw rod.

The utility model has the advantages that:

compared with the prior art, the utility model provides a bolt, nut assembly that locking takes off, self-locking ability is strong, and the difficult pine of nut takes off, and fastening effect is better, and the reliability is high, has eliminated the potential safety hazard.

Drawings

The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:

fig. 1 is a schematic view of the working state of the present invention.

Fig. 2 is a sectional view a-a of fig. 1.

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

Fig. 4 is a perspective view of the nut of the present invention.

Fig. 5 is a cross-sectional view of the nut of the present invention.

Fig. 6 is a perspective view of the clip of the present invention.

Fig. 7 is a cross-sectional view of the clip of the present invention.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention, and the technical effects obtained by the present invention easy to understand, the following detailed drawings are combined to further explain the embodiments of the present invention.

It should be noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

As shown in fig. 1 and 2, in an embodiment of the utility model, a locking bolt, nut assembly that take off is provided, including bolt 1, threaded connection is at nut 2 on bolt 1's screw rod 12, be located 2 outer ends of nut and locate screw rod 12 top surface middle part lug 13, locate the first annular groove 21 of 2 outer ends of nut, cover on lug 13 one end stretch into the fastener 4 of the bottom surface butt of first annular groove 21 with first annular groove 21, locate the ring groove 22 at first annular groove 21 lateral wall middle part, the joint is with the jump ring 3 of restriction fastener 4 axial displacement on ring groove 22.

As shown in fig. 3, the bolt 1 includes a head 11, the head 11 is hexagonal, and in some other embodiments, other shapes may be adopted, such as a quadrangle, and one end of a screw 12 is perpendicularly connected to one end of the head 11, a protrusion 13 is located on one end of the screw 12 away from the head 11, the screw 12 is provided with an external thread, and the head 11, the screw 12 and the protrusion 13 are of an integrally molded structure.

As shown in fig. 4, the nut 2 has a hexagonal shape, a quadrangular shape, or the like, and has an internal thread formed in its inner hole to match the external thread of the screw 12.

The bolt 1 and the nut 2 are preferably made of stainless steel, and the clamping piece 4 and the clamping spring 3 are preferably made of spring steel. The clamp spring 3 is a standard component, so a detailed structural diagram or a perspective diagram is not drawn. Nut 2 is used for locking the work piece 5 of installing between head 11 of bolt 1 and nut 2, fastener 4 is used for withstanding nut 2 and prevents its axial displacement, lug 13 is used for restricting fastener 4 and prevents its axial rotation around screw rod 12, jump ring 3 is used for withstanding fastener 4, prevent its axial displacement along screw rod 12, thereby when nut 2 locks work piece 5 on screw rod 12, better auto-lock ability has between nut 2 and fastener 4 and the jump ring 3, nut 2 is difficult for taking off, the fastening effect is better, high reliability, the potential safety hazard has been eliminated.

As shown in fig. 6 and 7, the clip member 4 includes a main body 44, and a radially protruding collar 41 is provided on an outer side wall of the main body 44 at an end protruding into the first annular groove 21. In the present embodiment, the main body 44 is cylindrical, and other shapes adapted to the first annular groove 21 may be adopted as required.

The clamping piece 4 is provided with an axial through hole 43, the shape and the size of the axial through hole 43 correspond to those of the lug 13, and the clamping piece 4 is sleeved on the lug 13 through the axial through hole 43 to limit the rotation of the clamping piece.

Preferably, the bumps 13 are square or rectangular in cross-section for ease of processing.

The thickness of bulge loop 41 corresponds with the distance between ring groove 22 and the first annular groove 21 bottom surface, and when jump ring 3 was arranged in ring groove 22, the bottom surface of jump ring 3 and the top surface butt of bulge loop 41.

The end surface of the main body 44 near the convex ring 41 is provided with a second annular groove 42, and the diameter of the second annular groove 42 is larger than the outer diameter of the screw 12. When the height of the workpiece 5 is not enough, the bottom of the main body 44 of the convenience card member 4 is fitted over the screw 12 through the second annular groove 42 so as to be adapted to the height of the workpiece for easy assembly.

As shown in fig. 2, 4, 5, and 6, further, a circle of grooves 23 arranged at intervals is respectively arranged on the upper and lower sides of the ring slot 22 on the side wall of the first ring-shaped groove 21, a protrusion 411 matched and clamped with the groove 23 is arranged on the outer circumferential surface of the protruding ring 41, and the positions of the two grooves 23 at corresponding positions in the axial direction in the two circles of grooves 23 are consistent, so that the protrusion 411 on the protruding ring 41 can be aligned with the two circles of grooves 23 at the same time, and can be smoothly inserted into the first ring-shaped groove 21 and clamped with the inner circle of grooves 23. The protrusion 411 is engaged with the groove 23 to further limit the rotation of the clamper 4.

Preferably, a gap is left between the through hole 43 and the bump 13. Be convenient for fastener 4 can rotate in order to make things convenient for protruding 411 and recess 23 counterpoint by the small-angle, avoid because reasons such as machining error and counterpoint inaccurate phenomenon to appear.

As shown in fig. 1, when in use, a workpiece 5 with an inner hole is sleeved on a screw 12 between a head 11 of a bolt 1 and a nut 2, the nut 2 is in threaded connection with the screw 12 and locks the workpiece 5, a convex ring 41 of a clamping piece 4 is arranged in a first annular groove 21 at the outer end of the nut 2 and is fixed by a clamp spring 3 to prevent the workpiece 5 from moving axially, a through hole 43 of the clamping piece 4 is matched with a convex block 13, a bulge 411 on the convex ring 41 of the clamping piece 4 is matched with a groove 23 on the nut 2, and the clamping piece 4 is limited to rotate around the screw 12 axially, so that a good locking effect is achieved, and the nut 2 and the workpiece 5 cannot loosen. When the height of the workpiece 5 and the length of the screw 12 have small deviation, the adjustment can be carried out by adding gaskets at two ends of the workpiece 5, if the deviation is large, the length of the screw 12 can be considered to be changed, and when the clamp spring 3 is disassembled, the clamp spring can be taken out in a mode of being separated or clamped out by a tool.

The above embodiments and drawings are only for illustrating the technical solutions of the present invention and do not constitute limitations of the present invention. It should be noted that, a person skilled in the art may modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for part or all of the technical features, and such modifications or substitutions are included in the scope of the present invention as claimed in the claims.

Claims

1. The utility model provides a bolt, nut component that locking takes off which characterized in that: including bolt, threaded connection nut on the screw rod of bolt, be located the nut outer end is located the lug at screw rod top surface middle part, is located the first annular groove of nut outer end, cover one end stretches into on the lug first annular groove with the fastener of the bottom surface butt of first annular groove, locate annular groove, the joint at annular groove lateral wall middle part are in with the restriction on the annular groove fastener axial displacement's jump ring.

2. The anti-loosening bolt and nut assembly according to claim 1, wherein: the clamping piece is provided with an axial through hole, the shape and the size of the axial through hole correspond to those of the convex block, and the clamping piece is sleeved on the convex block through the axial through hole so as to limit the rotation of the clamping piece.

3. The anti-loosening bolt and nut assembly according to claim 2, wherein: the cross section of the lug is polygonal.

4. The anti-loosening bolt and nut assembly according to claim 3, wherein: the cross section of the lug is square or rectangular.

5. The anti-loosening bolt and nut assembly according to claim 2, wherein: the clamping piece comprises a main body, wherein the main body extends into the outer side wall at one end of the first annular groove and is provided with a convex ring extending radially.

6. The anti-loosening bolt and nut assembly according to claim 5, wherein: the thickness of bulge loop with ring groove with the distance between the first annular groove bottom surface is corresponding, works as the jump ring is arranged in when ring groove, the bottom surface of jump ring with the top surface butt of bulge loop.

7. The anti-loosening bolt and nut assembly according to claim 5, wherein: and a second annular groove is formed in the end face, close to the convex ring, of the main body, and the diameter of the second annular groove is larger than the outer diameter of the screw rod.

8. The anti-loosening bolt and nut assembly according to claim 5, wherein: the side wall of the first annular groove is provided with a circle of grooves which are arranged at intervals on two sides of the annular clamping groove, the outer circumferential surface of the convex ring is provided with a bulge which is matched and clamped with the grooves, and the positions of the two grooves at the corresponding positions in the axial direction in the two circles of grooves are consistent.

9. The anti-loosening bolt and nut assembly according to claim 8, wherein: and a gap is reserved between the axial through hole and the lug.

10. The anti-loosening bolt and nut assembly according to claim 1, wherein: the bolt comprises a head, one end of the screw rod is vertically connected to one end of the head, and the lug is located at one end, far away from the head, of the screw rod.