CN214465492U

CN214465492U - Clamping ring holding type anti-loose fastening assembly

Info

Publication number: CN214465492U
Application number: CN202120482861.3U
Authority: CN
Inventors: 刘启超
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-07
Filing date: 2021-03-07
Publication date: 2021-10-22
Anticipated expiration: 2031-03-07

Abstract

A clamping ring holding type anti-loose fastening assembly belongs to the technical field of fasteners and comprises a screw, a nut and a clamping ring, wherein tooth grooves which are uniformly distributed in an annular shape are formed in external threads of the screw; an eccentric circular ring groove is dug in the inner annular wall of the nut, and a clamping ring pin position groove and a clamping ring tail position groove are dug in the eccentric circular ring groove; the clamping ring is a circular-segment-shaped clamping ring, the inner side surface of the clamping ring at the head end of the clamping ring is provided with teeth protrusions, and the outer side surface of the clamping ring is an inclined surface inclined towards the inner side surface of the clamping ring; the outer side surface of the clamping ring at the part of the clamping ring for tightening the joint end is provided with a loose clamping convex part, and the outer side surface of the clamping ring at the tail end position is provided with a fixed clamping convex part; the clamping ring is arranged in the eccentric circular groove, the clamping fixing convex part is arranged in the clamping ring tail position groove, and the clamping loosening convex part is arranged in the clamping ring pin position groove; the utility model has simple structure and convenient operation; the clamping ring can be effectively ensured to clamp the nut, so that the nut cannot be unscrewed reversely; the nut can be smoothly disassembled by disassembling the clamping pin.

Description

Clamping ring holding type anti-loose fastening assembly

Technical Field

The utility model belongs to the technical field of the fastener, especially a locking fastening components of clamping ring formula of clasping.

Background

The common fasteners comprise a bolt and nut assembly, a stud and nut assembly, a screw and the like, wherein the nut is a polygonal cylinder provided with a central threaded hole, an inner thread is arranged on the inner annular wall of the central threaded hole and matched and screwed with an outer thread on the stud for fastening and connecting two or more fastened pieces with through holes.

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 even falls off, and the stability and the safety of the operation of the connecting structure and even 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.

Therefore, the applicant applies for an invention patent with application number 2019108155520 in 2019, 8, 30, and discloses a combined scheme of a bolt, a nut, a positioning locking pin and a clamp spring; the bolt is provided with external threads on a screw rod, and the external threads are uniformly distributed with a plurality of longitudinal screw rod locking grooves in an annular shape; the inner ring wall of the inner layer of the nut is provided with internal threads, and the inner ring wall of the outer layer is dug to be provided with an annular clamp spring groove; a nut locking groove is vertically dug in the outer end face of the nut along the outer-layer inner ring wall and the inner-layer inner ring wall, the nut locking groove penetrates through the clamp spring groove and part of the internal threads, and the positioning locking pin comprises a pin column, a connecting rod and a loading and unloading handle which are sequentially connected; the clamp spring is a ring filter-shaped elastic clamping piece; 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 locking pin through the mechanical connection of the screw assembly and the bolt and the nut, and are prevented from falling off by being clamped by the clamp spring, so that the bolt and the nut are never loosened; but the structure of this scheme is more complicated, and it is also more complicated to use the operation, and this patent is the improvement on this patent technology basis.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to above-mentioned defect, provide a simple structure and convenient operation's locking fastening components to improve fastening quality, reach locking effect.

In order to solve the technical problem, the technical scheme adopted by the utility model is a clamping ring holding type anti-loose fastening component, which comprises a screw rod, a nut and a clamping ring, and is characterized in that the screw rod is provided with external threads, and the external threads are provided with tooth grooves which are annularly and uniformly distributed; the inner ring wall of the nut is provided with an internal thread matched with the external thread, the inner ring wall where the internal thread is located is also dug with an eccentric circular groove, the circle center of the eccentric circular groove and the circle center of the inner ring wall of the nut are not on the same axis, so that relatively speaking, one side of the groove bottom in the eccentric circular groove is close to the internal thread, the other side of the groove bottom is far away from the internal thread, and the eccentric circular groove is located at any position of the non-edge of the inner ring wall of the nut; a clamping ring pin position groove and a clamping ring tail position groove are also dug in the eccentric circular ring groove; the clamping ring is a circular-segment-shaped clamping ring which is a circular clamping piece with a notch, the clamping ring is provided with a head end and a tail end, the inner side surface of the clamping ring at the head end is provided with a tooth protrusion, and the tooth protrusion is matched with the tooth socket in shape, so that the tooth protrusion can be stably sleeved in the tooth socket; the outer side surface of the clamping ring at the head end position is an inclined surface inclined towards the inner side surface of the clamping ring; the outer side surface of the clamping ring at the part of the clamping ring for tightening the joint end is provided with a loose clamping convex part, and the outer side surface of the clamping ring at the tail end position is provided with a fixed clamping convex part; the rand is installed in the eccentric ring inslot, and fixes the card convex part and install in the rand tail position groove, and the pine card convex part is installed in rand round pin position groove, and the rand inclined plane is installed in the eccentric ring inslot tank bottom and is close one side of internal thread.

The radian distance between the pin position groove of the clamping ring and the tail position groove of the clamping ring is 60-180 degrees, and the optimal radian distance is 120 degrees.

The tooth grooves can be vertical wall groove-shaped tooth grooves, inclined wall groove-shaped tooth grooves, arc wall groove-shaped tooth grooves, or inclined wall and vertical wall combined groove-shaped tooth grooves or arc wall and vertical wall combined groove-shaped tooth grooves.

The screw rod is an independent screw rod or a screw rod on a bolt or a screw rod fixed on other objects.

The nut is provided with a card unloading hole and a card unloading pin, the card unloading hole is a through hole drilled to a pin position groove of the clamping ring from the outer end face of the nut, the card unloading pin is a rod, when the nut is used, the card unloading pin is inserted into the through hole, the card unloading convex part is pushed open towards one side, far away from the internal thread, of the groove bottom in the eccentric circular groove, the tooth protrusions on the head end of the clamping ring are separated from tooth grooves on the screw rod, and then the nut can be smoothly unscrewed.

Furthermore, the lower end of the detachable clamping pin is an inclined tip, so that the detachable clamping pin can firstly enter a gap between the loose clamping convex part and the front side wall of the pin groove of the clamping ring when being inserted, the detachable clamping pin can open the loose clamping convex part along with continuous insertion, the tooth protrusion is separated from the tooth groove, and at the moment, the nut can be smoothly taken out through reverse rotation.

The card unloading hole can be any one of a round hole, a square hole, a diamond-shaped hole or a flat hole, and is correspondingly matched with the round hole, the square hole, the diamond-shaped hole or the flat hole, and the card unloading pin can be a corresponding one of a cylindrical bar, a square bar, a diamond-shaped bar or a flat bar.

When the nut is screwed into the screw rod, the nut is provided with the clamping ring, the nut can be smoothly screwed in, but the nut cannot be reversely screwed, because the head end of the clamping ring is embedded between the external thread and the groove bottom of the eccentric circular groove, the nut and the screw rod can be clamped only by reverse rotation, and the nut cannot reversely rotate.

When the nut is disassembled, the disassembling clamping pin is inserted into the disassembling clamping hole, the inclined tip can prop open the loosening clamping convex part, so that the tooth convex part is separated from the groove on the external thread of the screw rod, and the nut can be smoothly and reversely unscrewed.

Compared with the prior art, the utility model only digs the eccentric circular groove and the retainer ring in the nut, digs the tooth groove on the screw rod, and has simple structure and convenient operation; the tooth grooves are clamped by the tooth protrusions on the clamping ring, so that the clamping ring can effectively clamp the nut, and the nut cannot be unscrewed reversely; the nut can be smoothly disassembled by disassembling the clamping pin.

Drawings

Fig. 1 is the overall structure schematic diagram of the locking fastening assembly of the utility model discloses rand cohesion type.

Fig. 2 is a schematic structural view of a screw in a bolt.

Fig. 3 is a schematic view of a tangent plane structure of the nut at the position of the eccentric circular groove.

Fig. 4 is a schematic view of the structure of the collar.

Fig. 5 is a schematic view of the collar when installed in the eccentric circular groove of the nut.

In the figure: 1. the locking mechanism comprises a screw, 2 nuts, 3 collars, 4 tooth grooves, 5 eccentric circular grooves, 6 collar pin position grooves, 7 collar tail position grooves, 8 tooth protrusions, 9 inclined surfaces, 10 loosening protruding parts, 11 clamping fixing protruding parts, 12 clamping unloading holes and 13 clamping unloading pins.

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.

As shown in the figure, a clamping ring holding type anti-loose fastening assembly is manufactured, and comprises a screw rod 1, a nut 2 and a clamping ring 3, wherein the screw rod 1 can be an independent screw rod, a screw rod on a bolt or a screw rod fixed on another object; the screw rod 1 is provided with external threads, and the external threads are provided with tooth grooves 4 which are uniformly distributed in an annular shape; the tooth grooves 4 may be vertical wall grooves, inclined wall grooves, arc wall grooves, or a combination of inclined walls and vertical walls or a combination of arc walls and vertical walls.

An internal thread matched with the external thread of the screw rod is arranged on the inner ring wall of the nut 2, an eccentric circular groove 5 is further dug in the inner ring wall where the internal thread is located, the circle center of the eccentric circular groove 5 is not on the same axis line with the circle center of the inner ring wall of the nut, so that relatively speaking, one side of the groove bottom in the eccentric circular groove 5 is close to the internal thread, the other side of the groove bottom is far away from the internal thread, and the eccentric circular groove 5 is located at any position, not on the edge, of the inner ring wall of the nut; a collar pin position groove 6 and a collar tail position groove 7 are also dug in the eccentric circular ring groove 5; the radian distance between the collar pin position groove 6 and the collar tail position groove 7 is 60-180 degrees, and the optimal radian distance is 120 degrees.

The clamping ring 3 is a circular-segment-shaped clamping ring, the circular-segment-shaped clamping ring is a clamping piece made of a circle with a gap, the clamping ring 3 is provided with a head end and a tail end, a tooth protrusion 8 is arranged on the inner side face of the clamping ring at the head end, and the configuration of the tooth protrusion 8 is matched with various configurations of the tooth groove 4, so that the tooth protrusion 8 can be stably sleeved in the tooth groove 4; the outer side surface of the clamping ring at the head end position is an inclined surface 9 inclined towards the inner side surface of the clamping ring; a loose clamping convex part 10 is arranged on the outer side surface of the clamping ring at the part of the clamping ring 3 for tightening the joint end, and a fixed clamping convex part 11 is arranged on the outer side surface of the clamping ring at the tail end position; rand 3 installs in eccentric ring groove 5, and solid card convex part 11 installs in rand tail position groove 7, and pine card convex part 10 installs in rand pin position groove 6, and rand inclined plane 9 installs at the bottom of the groove in eccentric ring groove 5 near one side of internal thread.

The nut 2 is provided with a card unloading hole 12 in a drilling mode and provided with a card unloading pin 13, the card unloading hole 12 is a through hole drilled to the pin position groove 6 of the clamping ring from the outer end face of the nut 2, the card unloading pin 13 is a rod, when the nut 2 is used, the card unloading pin 13 is inserted into the card unloading hole 12, the card loosening convex part 10 is pushed open towards one side, far away from the internal thread, of the bottom of the eccentric circular groove, the tooth protrusions 8 on the head end of the clamping ring are separated from the tooth grooves 4 on the screw rod 1, and then the nut 2 can be loosened smoothly.

Furthermore, the lower end of the releasing pin 13 is an inclined tip, so that the releasing pin can firstly enter a gap between the releasing convex part 10 and the front side wall of the pin position groove 6 of the collar when being inserted, the releasing pin 13 can open the releasing convex part 10 along with the continuous insertion, the tooth protrusion 8 is separated from the tooth groove 4, and at the moment, the nut 2 can be smoothly taken out through the reverse rotation.

The card unloading hole 12 can be any one of a round hole, a square hole, a diamond-shaped hole or a flat hole, and is correspondingly matched with the round hole, the square hole, the diamond-shaped hole or the flat hole, and the card unloading pin 13 can be a corresponding one of a cylindrical bar, a square bar, a diamond-shaped bar or a flat bar.

When screwing the nut 2 into the screw rod 1, the nut 2 is provided with the clamping ring 3, the nut 2 can be smoothly screwed in, but the nut 2 cannot be reversely screwed, because the head end of the clamping ring 3 is embedded between the external thread and the groove bottom of the eccentric circular groove 5, as long as the nut is reversely screwed, the nut 2 and the screw rod 1 can be clamped, and the nut 2 cannot be reversely screwed.

When the nut is disassembled, the disassembling pin 13 is inserted into the disassembling hole 12, the inclined tip can open the loosening convex part 10, so that the tooth protrusion 8 is separated from the groove 4 on the external thread of the screw rod 1, and the nut 2 can be smoothly and reversely unscrewed.

Claims

1. A clamping ring holding type anti-loose fastening assembly comprises a screw, a nut and a clamping ring, and is characterized in that external threads are arranged on the screw, and tooth grooves which are uniformly distributed in an annular shape are formed in the external threads; an inner thread matched with the outer thread is arranged on the inner ring wall of the nut, an eccentric circular groove is dug in the inner ring wall where the inner thread is located, and the eccentric circular groove is located at any position, not on the edge, of the inner ring wall of the nut; a clamping ring pin position groove and a clamping ring tail position groove are dug in the eccentric circular ring groove; the clamping ring is a circular-segment-shaped clamping ring, the clamping ring is provided with a head end and a tail end, the inner side surface of the clamping ring at the head end is provided with a tooth protrusion, and the tooth protrusion is matched with the tooth groove in shape; the outer side surface of the clamping ring at the head end position is an inclined surface inclined towards the inner side surface of the clamping ring; the outer side surface of the clamping ring at the part of the clamping ring for tightening the joint end is provided with a loose clamping convex part, and the outer side surface of the clamping ring at the tail end position is provided with a fixed clamping convex part; the rand is installed in the eccentric ring inslot, and fixes the card convex part and install in the rand tail position groove, and the pine card convex part is installed in rand round pin position groove, and the rand inclined plane is installed in the eccentric ring inslot tank bottom and is close one side of internal thread.

2. The clip-on, release-resistant fastening assembly of claim 1, wherein the arcuate distance between the pin slot of the collar and the tail slot of the collar is from 60 ° to 180 °.

3. The clip-on, anti-loose clip assembly of claim 2, wherein the arc distance between the pin slot of the collar and the tail slot of the collar is 120 °.

4. A clip-collar, hugging-type, anti-loose fastener assembly according to claim 2 or 3, characterized in that said gullet is any one of a vertical wall groove-shaped gullet, an inclined wall groove-shaped gullet, an arc wall groove-shaped gullet, a combination inclined wall and vertical wall groove-shaped gullet, or a combination arc wall and vertical wall groove-shaped gullet.

5. A clasping locking fastening assembly as in claim 4, wherein the nut is drilled with a release hole, which is a through hole drilled from the outer end face of the nut to the slot of the clasping pin, and is provided with a release pin, which is a bar.

6. The clasping, anti-loose fastener assembly of claim 5, wherein the lower end of the release pin is a beveled tip.

7. The clasping type loose-proof fastening assembly of claim 6, wherein the clip-removing hole is any one of a round hole, a square hole, a diamond hole or a flat hole; the disassembling pin is a corresponding one of a cylindrical bar, a square bar, a diamond bar or a flat bar.

8. The clip-on anti-loose fastener assembly according to claim 1, wherein the threaded rod is a separate threaded rod or a threaded rod on a bolt or a threaded rod fixed to another object.