CN219282221U

CN219282221U - Never-loosening bolt

Info

Publication number: CN219282221U
Application number: CN202320296577.6U
Authority: CN
Inventors: 王国啸
Original assignee: Huachuang Non Standard Machinery Co In Xi'an International Port Area
Current assignee: Huachuang Non Standard Machinery Co In Xi'an International Port Area
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-06-30
Anticipated expiration: 2033-02-23

Abstract

The utility model discloses a never-loosening bolt, and belongs to the technical field of fasteners. The never-loosening bolt comprises: the screw is pre-buried in the first workpiece and kept fixed, and passes through a through hole on the second workpiece; the annular disc is sleeved on the screw, and the upper surface of the annular disc is provided with an annular groove; the annular elastic ring is arranged in the annular groove, one end of the annular elastic ring is fixed on the inner wall of the annular groove, the other end of the annular elastic ring is fixedly provided with a stop block, and the back surface of the stop block is provided with a first slope; the nut threaded connection the screw, and the nut is located the top of annular bullet circle, the lower surface of nut is provided with around a plurality of pawl of screw circumference setting, the back of each pawl is equipped with the second slope. The never-loosening bolt has the advantages of easy tightening, easy dismounting, no damage to threads, reusability, simple processing, low cost and never loosening by using a mechanical structure.

Description

Never-loosening bolt

Technical Field

The utility model relates to the technical field of fasteners, in particular to a never-loosening bolt.

Background

The bolt is a mechanical part and is matched with a cylindrical threaded fastener of the nut; the fastener consists of a head part and a screw rod, and is matched with a nut to be used for fastening and connecting two parts with through holes;

the bolt is one of the most widely applied and basic parts in various industries, and in various industries, for example, the bolt on a sleeper and the bolt on a wind driven generator base, the bolt is required to be not loosened in work, so that the bolt has higher anti-loosening requirement;

the prior haliock bolt is a common check bolt, adopts a double-nut structure, has large screw extrusion deformation in the process of screwing, thereby achieving the effect of preventing loosening, but the loosening prevention mode can cause damage and destruction to screw threads, is difficult to detach, and has the problems of incapability of being reused and high price.

Disclosure of Invention

The utility model aims to overcome the problems that the existing bolt is large in screw extrusion deformation in the using and screwing process, so that the anti-loosening effect is achieved, and the anti-loosening mode can damage and destroy threads, is difficult to disassemble and has the problems that the disassembly cannot be reused and the cost is high, so that the screw is never loosened.

The utility model provides a never-loosening bolt, which comprises the following components: the screw is pre-buried in the first workpiece and kept fixed, and passes through a through hole on the second workpiece; the annular disc is sleeved on the screw, and the upper surface of the annular disc is provided with an annular groove; the annular elastic ring is arranged in the annular groove, one end of the annular elastic ring is fixed on the inner wall of the annular groove, the other end of the annular elastic ring is fixedly provided with a stop block, and the back surface of the stop block is provided with a first slope; nut threaded connection the screw, and the nut is located the top of annular bullet circle, the lower surface of nut is provided with and encircles a plurality of back teeth that screw circumference set up, the back of each back tooth is equipped with the second slope, has the trend with the first slope butt on the dog with the adjacent back tooth of dog on the second slope, and the front homoenergetic of each back tooth and the front butt of dog.

Preferably, a plurality of vertebral bodies are uniformly distributed around the screw below the annular disc.

Preferably, a first annular boss is arranged on the upper surface of the annular disc close to the position of the screw, a second annular boss is arranged right above the first annular boss, the second annular boss is fixed on the lower end face of the nut, and the plurality of vertebral bodies are located right below the first annular boss.

Preferably, the upper surface of the second workpiece is provided with a plurality of positioning holes, the positioning holes are in one-to-one correspondence with a plurality of vertebral bodies, and each vertebral body can be inserted into each positioning hole.

Preferably, the outer periphery of the annular disc is provided with a plurality of prismatic surfaces, and the inner periphery of the annular disc is provided with threads connected with the screw threads; the screw penetrates through the first workpiece and the second workpiece, the end part of the screw is coaxially and fixedly connected with the stud, the thread of the stud is opposite to the thread of the screw in rotation direction, the stud is in threaded connection with the nut, and a cylindrical groove with the diameter larger than that of the thread on the screw is formed in the end face, close to the annular elastic ring, of the nut.

Compared with the prior art, the utility model has the beneficial effects that: when the never-loosening bolt is used, the nut is screwed, the nut performs spiral movement, one of the inverted teeth is blocked by the stop block when the nut rotates, the annular elastic ring is pushed, the annular elastic ring pushes the annular disc to perform spiral movement, the lower surface of the annular disc presses the second workpiece, the second workpiece is fastened, the annular disc cannot continuously rotate, at the moment, the nut is continuously screwed, the annular elastic ring is deformed by rotating and pressing the nut, and the second workpiece is pushed downwards and pre-tensioned; when the nut has a loosening trend, the second slope of the inverted tooth on the nut is blocked by the first slope on the stop block, the nut is limited to continue to rotate, the purpose of never loosening is achieved, and when the nut is required to be disassembled, the purpose of disassembling the nut can be achieved only by inserting a screwdriver into a gap between the inverted tooth and the annular elastic ring and then discharging the annular elastic ring; the never-loosening bolt has the advantages of easy tightening, easy dismounting, no damage to threads, reusability, simple processing, low cost and never loosening by using a mechanical structure.

Drawings

FIG. 1 is a first view of the present utility model;

FIG. 2 is a second view of the present utility model;

FIG. 3 is a schematic view of a stud assembly of the present utility model;

fig. 4 is a cross-sectional view of fig. 3.

Reference numerals illustrate:

1. screw, 2, second work piece, 3, annular disc, 4, ring channel, 5, annular spring ring, 6, dog, 7, nut, 8, pawl, 9, cone, 10, first annular boss, 11, second annular boss, 12, double-screw bolt, 13, cylindrical recess, 14.

Detailed Description

The following detailed description of specific embodiments of the utility model is, but it should be understood that the utility model is not limited to specific embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

First embodiment

The utility model provides a never-loosening bolt, which comprises the following components in fig. 1-2: the screw 1, the annular disc 3, the annular elastic ring 5 and the nut 7, wherein the screw 1 is pre-buried in the first workpiece 14 and is kept fixed, and the screw 1 passes through a through hole on the second workpiece 2; the annular disc 3 is sleeved on the screw 1, and an annular groove 4 is formed in the upper surface of the annular disc 3; the annular elastic ring 5 is arranged in the annular groove 4, one end of the annular elastic ring 5 is fixed on the inner wall of the annular groove 4, the other end of the annular elastic ring 5 is fixedly provided with a stop block 6, and the back surface of the stop block 6 is provided with a first slope; nut 7 threaded connection screw 1, and nut 7 is located the top of annular bullet circle 5, the lower surface of nut 7 is provided with encircleing a plurality of back teeth 8 that screw 1 circumference set up, the back of each back tooth 8 is equipped with the second slope, and the second slope on the back tooth 8 adjacent with dog 6 has the trend with the first slope butt on the dog 6, and the front of each back tooth 8 all can with the front butt of dog 6.

Preferably, a plurality of vertebral bodies 9 are uniformly distributed around the screw 1 below the annular disc 3.

Preferably, a first annular boss 10 is arranged on the upper surface of the annular disc 3 near the screw 1, a second annular boss 11 is arranged right above the first annular boss 10, the second annular boss 11 is fixed on the lower end face of the nut 7, and the plurality of vertebral bodies 9 are located right below the first annular boss 10.

Preferably, the upper surface of the second workpiece 2 is provided with a plurality of positioning holes, the plurality of positioning holes are in one-to-one correspondence with a plurality of vertebral bodies 9, and each vertebral body 9 can be inserted into each positioning hole.

When the screw 1 is used, the screw 1 needs to be pre-buried (or fixed) in the first workpiece 14, the second workpiece 2 and the annular disc 3 are sleeved on the screw 1 in sequence, and then the nut 7 is connected with the screw 1 in a threaded manner;

screwing the nut 7, wherein when the nut 7 rotates, one of the plurality of inverted teeth 8 is blocked by the stop block 6 to push the annular elastic ring 5, the annular elastic ring 5 pushes the annular disc 3 to do spiral movement, the lower surface of the annular disc 3 presses the second workpiece 2, the second workpiece 2 is fastened, the plurality of cone 9 are used for increasing friction with the second workpiece 2, the plurality of cone 9 are inserted into each positioning hole, the annular disc 3 can not rotate continuously, at the moment, the nut 7 is screwed continuously, the annular elastic ring 5 is deformed by rotating and pressing the nut 7, and the second workpiece 2 is pushed downwards and pre-tightened (wherein the first annular boss 10 and the second annular boss 11 can abut against each other for preventing the nut 7 from being excessively pre-tightened); when the nut 7 has a loosening trend (the nut 7 is unscrewed and performs reverse spiral movement), a second slope of the inverted tooth 8 on the nut 7 is blocked by a first slope on the stop block 6 (the annular elastic ring 5 has a deformation restoring trend, the annular elastic ring 5 axially stretches along the screw 1), the nut 7 is limited to continue rotating, the purpose of never loosening is achieved, when the nut 7 needs to be disassembled, the purpose of disassembling the nut 7 can be achieved only by inserting a screwdriver into a gap between the inverted tooth 8 and the annular elastic ring 5, and the annular elastic ring 5 is arranged down; the never-loosening bolt has the advantages of easy tightening, easy dismounting, no damage to threads, reusability, simple processing, low cost and never loosening by using a mechanical structure.

Second embodiment

The utility model provides a never-loosening bolt, which comprises the following components in fig. 1-4: the screw 1, the annular disc 3, the annular elastic ring 5 and the nut 7, wherein the screw 1 passes through the through hole on the second workpiece 2; the annular disc 3 is sleeved on the screw 1, and an annular groove 4 is formed in the upper surface of the annular disc 3; the annular elastic ring 5 is arranged in the annular groove 4, one end of the annular elastic ring 5 is fixed on the inner wall of the annular groove 4, the other end of the annular elastic ring 5 is fixedly provided with a stop block 6, and the back surface of the stop block 6 is provided with a first slope; the nut 7 is in threaded connection with the screw 1, the nut 7 is positioned above the annular elastic ring 5, a plurality of inverted teeth 8 which are circumferentially arranged around the screw 1 are arranged on the lower surface of the nut 7, a second slope is arranged on the back surface of each inverted tooth 8, the second slope on the inverted tooth 8 adjacent to the stop block 6 has a tendency of abutting with the first slope on the stop block 6, and the front surface of each inverted tooth 8 can abut with the front surface of the stop block 6;

preferably, the outer circumference of the annular disc 3 is provided with a plurality of prismatic surfaces, and the inner circumference is provided with threads which are in threaded connection with the screw 1; the screw 1 passes through the first workpiece 14 and the second workpiece 2, the end part of the screw 1 is coaxially and fixedly connected with a stud 12, the thread of the stud 12 is opposite to the thread of the screw 1 in rotation direction, the stud 12 is in threaded connection with the nut 7, and a cylindrical groove 13 with the diameter larger than that of the thread on the screw 1 is arranged on the end surface of the nut 7, which is close to the annular elastic ring 5.

The embodiment is applicable to two cases that the screw 1 is fixedly connected with the first workpiece 14 or is rotationally connected with the first workpiece 14 as shown in fig. 3-4;

when the screw is used, the screw 1 penetrates through the first workpiece 14 and the second workpiece 2, the annular disc 3 is connected to the screw 1 in a threaded manner, the nut 7 is connected to the stud 12 in a threaded manner, the screw 1 is fixed by a wrench, the other wrench rotates the annular disc 3 downwards and forwards, the first workpiece 14 and the second workpiece 2 are pre-tightened, the nut 7 is reversely rotated downwards again, the inverted tooth 8 on the nut 7 pushes the stop block 6, the annular elastic ring 5 is properly deformed, meanwhile, the deformed annular elastic ring 5 has a tendency of pushing the annular disc 3 to reversely rotate (the annular disc 3 reversely rotates upwards), the nut 7 and the annular disc 3 are close to each other, and the annular elastic ring 5 accumulates elastic potential energy;

when the annular disc 3 has a loosening trend (the annular disc 3 reversely rotates upwards), the annular disc 3 reversely rotates to drive the annular elastic ring 5 and the stop block 6 to reversely rotate simultaneously, a first slope of the stop block 6 is abutted with a second slope arranged on the back surface of the adjacent inverted tooth 8, the nut 7 is pushed to have a reverse rotation trend, and the nut 7 reversely rotates to downwards extrude the annular elastic ring 5, so that the annular disc 3 and the annular elastic ring 5 are limited to move upwards, and further the annular disc 3 is prevented from loosening;

when the rotating nut 7 has a loosening trend (the nut 7 rotates upwards and forwards), the first slope of the stop block 6 is abutted against the second slope arranged on the back surface of the adjacent inverted tooth 8, and under the condition that the annular elastic ring 5 has elastic potential energy, the stop block 6 can limit the inverted tooth 8 to rotate continuously and can also play a role in preventing the nut 7 from loosening;

when the never-loosened bolt is required to be disassembled, the screw driver is only required to be inserted into a gap between the inverted tooth 8 and the annular elastic ring 5, the mutual limiting function of the stop block 6 and the inverted tooth 8 can be relieved by the lower annular elastic ring 5, and the nut 7 and the annular disc 3 are sequentially disassembled.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A never-loosening bolt, comprising:

the screw (1) is pre-buried in the first workpiece (14) and is kept fixed, and the screw (1) penetrates through the through hole on the second workpiece (2);

the annular disc (3) is sleeved on the screw (1), and an annular groove (4) is formed in the upper surface of the annular disc (3);

the annular elastic ring (5) is arranged in the annular groove (4), one end of the annular elastic ring (5) is fixed on the inner wall of the annular groove (4), the other end of the annular elastic ring (5) is fixedly provided with a stop block (6), and the back surface of the stop block (6) is provided with a first slope;

nut (7), threaded connection screw (1), and nut (7) are located the top of annular bullet circle (5), the lower surface of nut (7) is provided with and encircles a plurality of pawl (8) that screw (1) circumference set up, the back of each pawl (8) is equipped with the second slope, has the trend with the first slope butt on dog (6) with the adjacent pawl (8) on dog (6), and the front of each pawl (8) all can with the front butt of dog (6).

2. A never-loosening bolt according to claim 1, characterized in that a plurality of vertebral bodies (9) are evenly distributed around the screw (1) under the annular disc (3).

3. The never-loosening bolt according to claim 2, wherein a first annular boss (10) is arranged on the upper surface of the annular disc (3) near the screw (1), a second annular boss (11) is arranged right above the first annular boss (10), the second annular boss (11) is fixed on the lower end face of the nut (7), and the plurality of vertebral bodies (9) are arranged right below the first annular boss (10).

4. The never-loosening bolt according to claim 2, wherein the upper surface of the second workpiece (2) is provided with a plurality of positioning holes, the plurality of positioning holes are in one-to-one correspondence with a plurality of vertebral bodies (9), and each vertebral body (9) can be inserted into each positioning hole.

5. A never-loosening bolt according to claim 1, characterized in that the outer periphery of the annular disc (3) is provided with a plurality of prismatic faces and the inner periphery is provided with threads for threaded connection with the screw (1);

the screw (1) passes through the first workpiece (14) and the second workpiece (2), the end part of the screw (1) is coaxially and fixedly connected with the stud (12), the thread of the stud (12) is opposite to the thread of the screw (1), the stud (12) is in threaded connection with the nut (7), and a cylindrical groove (13) with the diameter larger than the diameter of the thread on the screw (1) is formed in the end face, close to the annular elastic ring (5), of the nut (7).