CN211573990U

CN211573990U - Anti-loosening bolt

Info

Publication number: CN211573990U
Application number: CN202020127640.XU
Authority: CN
Inventors: 俞向东
Original assignee: Shanghai Zhongxin Hardware Manufacture Co ltd
Current assignee: Shanghai Zhongxin Hardware Manufacture Co ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-09-25
Anticipated expiration: 2030-01-19

Abstract

The utility model relates to a locking bolt that moves, it includes spiral shell head and screw rod, the said screw rod includes cylinder section and screw thread section; the upper end of the cylindrical section is fixedly connected with the screw head, and the lower end of the cylindrical section is fixedly connected with the threaded section; the cylindrical section is sleeved with a steel gasket; the steel gasket is fixedly connected with an anti-loosening bulge; the anti-loosening bulge is arranged on the surface of one side, close to the screw head, of the steel gasket; the anti-loosening bulge is of a spiral radial structure and extends from the inner circle of the steel gasket to the outer circle; the spiral direction of the anti-loosening bulge is the same as the spiral direction of the threads on the screw rod; and a radial groove matched with the bulge shape is formed in the surface of one end, close to the screw rod, of the screw head. The utility model discloses have and prevent that the bolt from taking place the reverse rotation at mechanical work in-process, reduce the effect of the rate of taking off of bolt.

Description

Anti-loosening bolt

Technical Field

The utility model belongs to the technical field of the fastener technique and specifically relates to a locking bolt that moves is related to.

Background

At present, a bolt is a common mechanical part, and the bolt consists of a head part and a screw rod, needs to be matched with a nut and is used for fastening and connecting two parts with through holes. The two parts can be separated by unscrewing the nut from the bolt.

As shown in the bolt fastening structure of fig. 1, the bolt 7 is screwed through the first coupling hole 81 of the first member 8 and the second coupling hole 91 of the second member 9, thereby fixedly coupling the first member 8 and the second member 9 together.

The above prior art solutions have the following drawbacks: in actual work, the machine can generate great vibration in operation, and the screw is easy to generate shearing force with the screw head to break after receiving impact force; and the bolt is easy to be loosened and separated slowly under the influence of vibration, so that the normal work is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a locking bolt that moves, improve the bolt and by the combination degree between the connecting piece, reduce the rate of abscission to prior art exists not enoughly.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a locking bolt comprises a bolt head and a screw, wherein the screw comprises a cylindrical section and a threaded section; the upper end of the cylindrical section is fixedly connected with the screw head, and the lower end of the cylindrical section is fixedly connected with the threaded section; the cylindrical section is sleeved with a steel gasket; the steel gasket is fixedly connected with an anti-loosening bulge; the anti-loosening bulge is arranged on the surface of one side, close to the screw head, of the steel gasket; the anti-loosening bulge is of a spiral radial structure and extends from the inner circle of the steel gasket to the outer circle; the spiral direction of the anti-loosening bulge is the same as the spiral direction of the threads on the screw rod; and a radial groove matched with the bulge shape is formed in the surface of one end, close to the screw rod, of the screw head.

Through adopting above-mentioned technical scheme, when the bolt was screwed up, steel gasket and spiral head contact were equipped with on the steel gasket with the screw rod on the radial arch of the same spiral of screw thread spiral direction, offered simultaneously on the spiral head lower surface with protruding radial recess the same in shape, can mesh with the arch on the steel gasket when the bolt was screwed up, prevented that the spiral head from driving the screw rod and taking place the phenomenon that the counter-rotation appears following being deviate from by the connecting piece.

The utility model discloses further set up to: a rubber gasket is arranged on one side of the steel gasket, which is far away from the cylindrical section; the rubber gasket is glued with the steel gasket; the rubber gasket is sleeved on the cylindrical section; and a supporting piece is arranged in the rubber gasket.

By adopting the technical scheme, the rubber gasket arranged below the steel gasket has a certain damping effect, can absorb the vibration generated in the mechanical operation process and prevent the bolt from loosening; meanwhile, the rubber gasket can improve the sealing property between the bolt and the connected piece.

The utility model discloses further set up to: a plurality of friction bumps are uniformly and fixedly connected to the lower surface of the rubber pad.

By adopting the technical scheme, the friction force between the bolt and the connected piece can be increased by the friction convex points, so that the stud is not easy to rotate, and the possibility of the stud falling off is reduced.

The utility model discloses further set up to: the support is made of a rubber material; the supporting piece is in interference fit with the rubber gasket.

By adopting the technical scheme, the supporting piece has certain elastic strength, and when the bolt is screwed down, the rubber gasket is compressed, so that an additional pre-tightening extrusion force is formed between the bolt and the connected piece in the axial direction; when machinery produces vibration at the operation in-process, the elasticity of rubber packing ring in the axial recovers, because support piece's elastic strength is great for the bolt with by keep an extrusion force between the connecting piece all the time, and then can prevent deviating from of bolt.

The utility model discloses further set up to: the diameter of the thread section is larger than that of the cylindrical section.

Through adopting above-mentioned technical scheme, the diameter of screw thread section is greater than the diameter of cylinder section, can prevent that steel washer and elastic washer from droing from the bolt.

The utility model discloses further set up to: the screw head is in a regular hexagon shape; and an anti-slip layer is coated on the outer side surface of the screw head.

Through adopting above-mentioned technical scheme, the frictional force between skid resistant course can increase spanner and the spiral shell head, convenient to detach and installation bolt body.

The utility model discloses further set up to: and a screwing groove convenient for screwing the screw head is formed in the middle position of one end, far away from the screw rod, of the screw head.

Through adopting above-mentioned technical scheme, can put into the inslot of screwing with the instrument head, drive the spiral shell head and rotate and then screw up the bolt.

The utility model discloses further set up to: an accommodating groove is formed in the end face of one end, far away from the screw head, of the threaded section; a reinforcing column is arranged in the accommodating groove; the reinforcing column is connected with the accommodating groove.

By adopting the technical scheme, the reinforcing column is in threaded connection with the threaded section, so that the reinforcing column is conveniently placed in the threaded section; simultaneously, the reinforcing column can improve the strength of the bolt, and when the reinforcing column is screwed into the thread section, the stud can expand to a certain degree, so that the stripping rate of the bolt is reduced.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the anti-loosening bulge which is the same as the spiral direction of the threads on the screw rod is fixedly connected to the surface of the steel washer, so that the screw rod can be prevented from rotating reversely, and the stripping rate of the screw rod is reduced; the lower surface of the screw head is provided with a radial groove which has the same shape as the bulge and can be meshed with the anti-loosening bulge, the screw head can be prevented from driving the stud to rotate, and the combination degree between the stud and a connected piece is enhanced;

2. the rubber washer sleeved on the screw can absorb the vibration generated in the mechanical operation process, so as to prevent the bolt from loosening; meanwhile, the sealing performance between the bolt and the connected piece can be improved;

3. the reinforcing ribs arranged in the thread sections can expand the studs to a certain degree, so that the stripping rate of the studs is reduced.

Drawings

FIG. 1 is a background art reference;

FIG. 2 is a schematic view showing the overall structure of a bolt according to the embodiment;

FIG. 3 is a schematic sectional view of a bolt in the embodiment;

fig. 4 is a schematic structural view of the screw head in the embodiment.

Reference numerals: 1. A screw head; 11. screwing the groove; 12. a groove; 2. a screw; 21. a cylindrical section; 22. a threaded segment; 221. accommodating grooves; 3. a steel gasket; 31. the anti-loosening bulge is arranged on the outer wall of the shell; 4. a rubber gasket; 41. a support member; 42. rubbing the salient points; 5. an anti-slip layer; 6. a reinforcement column; 7. a bolt; 8. a first connecting member; 81. a first connection hole; 9. a second part; 91. and a second connection hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 2, the anti-loosening bolt disclosed by the present invention comprises a bolt head 1 and a bolt rod 2; the screw 2 comprises a cylindrical section 21 and a threaded section 22, the upper end of the cylindrical section 21 is fixedly connected with the screw head 1, the screw head 1 is in a regular hexagon shape, and the outer surface of the screw head is coated with an anti-skid layer 5; a screwing groove 11 in a quincunx shape is formed in the center of the end face of the screw head 1 far away from one end of the screw rod 2; the surface of the cylindrical section 21 is smooth; the upper end of the cylindrical section 21 is fixedly connected with the screw head 1, and the lower end of the cylindrical section is fixedly connected with the threaded section 22; a circular steel gasket 3 is sleeved on the cylindrical section 21, and the surface of one end, close to the screw head 1, of the steel gasket 3 is fixedly connected with an anti-loosening bulge 31; the anti-loosening bulge 31 is of a spiral radial structure and extends from the inner circle of the steel gasket 3 to the outer circle; the spiral direction of the anti-loosening bulge 31 is the same as the spiral direction of the threads on the screw rod 2; a round rubber gasket 4 is arranged at one end of the steel gasket 3 close to the threaded section 2, and the rubber gasket 4 is sleeved on the cylindrical section 21 and is glued with the steel gasket 3; the diameter of the thread section 22 is larger than that of the cylindrical section 21, so that the steel gasket 3 and the rubber gasket 4 are prevented from falling off.

Referring to fig. 3, two cylindrical supporting members 41 are in interference fit with the inside of the circular rubber gasket 4, and the supporting members 41 are made of a rubber material with high elastic strength and have strong elastic deformation capability; a plurality of hemispherical friction salient points 42 are uniformly and fixedly connected on the surface of one side of the rubber gasket 4 close to the thread section 22; a cylindrical accommodating groove 221 is formed in the end face of the threaded section 22, which is far away from one end of the screw head 1, and a reinforcing column 6 is arranged in the accommodating groove 221; an internal thread is formed in the side wall of the accommodating groove 221, an external thread matched with the internal thread of the accommodating groove 221 is formed in the reinforcing column 6, and the reinforcing column 6 is in threaded connection with the accommodating groove 221.

Referring to fig. 4, a radial groove 12 matched with the shape of the anti-loosening protrusion 31 is formed on the surface of the screw head 1 close to one end of the screw rod 2, and when the stud 2 is screwed down, the groove 12 on the screw head 1 can be meshed with the anti-loosening protrusion 31 on the steel gasket 3 to prevent the bolt from rotating reversely.

The implementation principle of the embodiment is as follows: when the screw is used, firstly, a worker cooperates with the screwing groove 11 through a tool to enable the screw head 1 to rotate so as to drive the screw rod 2 to rotate; the screw 2 completes the fixation of the connected piece after rotating; then, the reinforcing column 6 is screwed into the accommodating groove 221 in the screw 2 to complete the reinforcement of the screw 2; when the bolt works, the rubber gasket 4 sleeved on the cylindrical section 21 is contacted with the connected piece along with the gradual screwing of the screw rod 2 into the connected piece; the lower surface of the rubber washer 4 is fixedly connected with a plurality of hemispherical friction convex points 42, so that the friction force between the lower surface of the rubber washer and the contact surface of a connected piece can be increased, and the stud 2 is prevented from falling off the connected piece; the rubber gasket 4 also plays a certain role in resisting vibration, can absorb vibration generated in the mechanical operation process and prevents the bolt from falling off a connected piece due to vibration; in addition, the supporting member 41 in the rubber washer 4 has a certain elastic strength, when the bolt is tightened, the rubber washer 4 is compressed, so that an additional pre-tightening pressing force is formed between the bolt and the connected member in the axial direction; when the machine vibrates in the operation process, the rubber gasket 4 elastically restores in the axial direction, and the supporting piece 41 has higher elastic strength, so that an extrusion force is always kept between the bolt and the connected piece, and the bolt can be prevented from falling off; when the bolt is screwed with the connected piece, the anti-loosening bulge 31 with a spiral radial structure is arranged on the surface of the steel gasket 3, and the groove 12 matched with the anti-loosening bulge 31 on the steel gasket 3 is formed in the bottom surface of the screw head 1 and can be meshed with the anti-loosening bulge 31, so that the probability that the screw head 1 drives the screw rod 2 to be separated from the connected piece is further reduced.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a locking bolt that moves, includes spiral shell head (1) and screw rod (2), its characterized in that: the screw (2) comprises a cylindrical section (21) and a threaded section (22); the upper end of the cylindrical section (21) is fixedly connected with the screw head (1) and the lower end is fixedly connected with the threaded section (22); the cylindrical section (21) is sleeved with a steel gasket (3); the steel gasket (3) is fixedly connected with an anti-loosening bulge (31); the anti-loosening bulge (31) is arranged on the surface of one side, close to the screw head (1), of the steel gasket (3); the anti-loosening bulge (31) is of a spiral radial structure and extends from the inner circle of the steel gasket (3) to the outer circle; the spiral direction of the anti-loosening bulge (31) is the same as the spiral direction of the threads on the screw rod (2); the surface of one end, close to the screw rod (2), of the screw head (1) is provided with a radial groove (12) matched with the shape of the anti-loosening bulge (31).

2. A locking bolt as defined in claim 1, wherein: a rubber gasket (4) is arranged on one side of the steel gasket (3) far away from the cylindrical section (21); the rubber gasket (4) is glued with the steel gasket (3); the rubber gasket (4) is sleeved on the cylindrical section (21); a supporting piece (41) is arranged in the rubber gasket (4).

3. A locking bolt as defined in claim 2, wherein: and a plurality of friction salient points (42) are uniformly and fixedly connected on the surface of one end of the rubber gasket (4) close to the threaded section (22).

4. A locking bolt as defined in claim 2, wherein: the support (41) is made of a rubber material; the supporting piece (41) is in interference fit with the rubber gasket (4).

5. A locking bolt as defined in claim 1, wherein: the diameter of the thread section (22) is larger than that of the cylindrical section (21).

6. A locking bolt as defined in claim 1, wherein: the screw head (1) is in a regular hexagon shape; the outer side surface of the screw head (1) is coated with an anti-slip layer (5).

7. A locking bolt as defined in claim 1, wherein: and a screwing groove (11) convenient for screwing the screw head (1) is formed in the middle position of one end, far away from the screw rod (2), of the screw head (1).

8. A locking bolt as defined in claim 1, wherein: an accommodating groove (221) is formed in the end face of one end, far away from the screw head (1), of the threaded section (22); a reinforcing column (6) is arranged in the accommodating groove (221); the reinforcing column (6) is in threaded connection with the accommodating groove (221).