CN213870651U

CN213870651U - Self-tightening anti-loosening hexagon bolt

Info

Publication number: CN213870651U
Application number: CN202022927067.3U
Authority: CN
Inventors: 于乐; 陈智勇; 吴良双
Original assignee: Lelian Tianjin Precision Machinery Technology Co ltd
Current assignee: Lelian Tianjin Precision Machinery Technology Co ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-08-03
Anticipated expiration: 2030-12-07

Abstract

The utility model discloses a from tight locking hex bolts, concretely relates to mechanical fastener technical field, including the bolt body, the bolt body includes nut and screw rod, the screw rod sets up in the nut bottom, bolt body bottom threaded connection has the nut, the nut sets up in the nut bottom, the nut below is equipped with the gag lever post, gag lever post top and screw rod bottom fixed connection, the constant head tank has all been seted up to the gag lever post both sides. The utility model discloses a press the locating piece at both ends, make the locating piece shrink to the constant head tank in, then through the threaded connection of internal thread pipe and external screw thread pipe again, establish the fixed cover of extrusion crown plate in telescopic outside, carry out a spacing fixed to the locating piece, wholly connect nut and screw rod together through the locating piece, make screw rod and nut keep unanimous motion, and can not take place because of vibrations, impact, variable load etc. make the nut not hard up and lead to the problem that the screw rod drops.

Description

Self-tightening anti-loosening hexagon bolt

Technical Field

The utility model relates to a mechanical fastener technical field, concretely relates to self-tightening locking hexagon bolt.

Background

The hexagon bolt is a fastener consisting of a head and a screw, and is divided into an iron bolt and a stainless steel bolt according to the material, namely the hexagon bolt (partial thread) -C grade and the hexagon bolt (full thread) -C grade. Also called hexagon head bolt (crude) hair hexagon head bolt and black iron screw. The bolts are generally classified into outer hexagon bolts and inner hexagon bolts according to the structure of the use environment, and the bolts with the performance grade of 10.9 or above are high-strength bolts. Because the bolt is directly connected with a mechanical part, the bolt can play a role in connection and fastening without matching nuts, wherein the hexagon socket head cap screw is widely applied and used for mechanical equipment or structures with higher requirements on dimensional accuracy and performance. In the industrial field of mechanical equipment such as speed reducers, machine tools, oil pumps and injection molding machines, socket head cap screws are usually used for fastening various parts in a matching manner.

The prior art has the following defects: the problems of nut loosening, bolt falling and the like caused by vibration, impact, variable load and the like.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a self-tightening locking hexagon bolt to solve among the prior art because the nut that vibrations, impact, variable load etc. arouse is not hard up and the bolt problem that leads to drops.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: a self-tightening anti-loosening hexagonal bolt comprises a bolt body, wherein the bolt body comprises a nut and a screw, the screw is fixedly arranged at the bottom of the nut, the nut is connected with the bottom of the bolt body in a threaded manner, the nut is arranged at the bottom of the nut, a limiting rod is arranged below the nut, the top end of the limiting rod is fixedly connected with the bottom end of the screw, positioning grooves are formed in two sides of the limiting rod, a positioning block is arranged inside the positioning groove, a sleeve is movably sleeved outside the limiting rod and is arranged below the nut, through holes are formed in two sides of the sleeve in a penetrating manner, the two through holes are respectively arranged on one side of the two positioning grooves, sliding grooves are formed in the top and the bottom of an inner cavity of the through holes, a spring is arranged inside the sliding grooves, the spring is fixedly connected with the inner wall of one side of the sliding grooves, which is far away from the limiting rod, a sliding block is fixedly arranged at the other end of the spring, one end of the positioning block, which is far away from the limiting rod, penetrates through the positioning groove and extends into the through holes, two sliders respectively with the top and the bottom fixed connection of locating piece one side, the outside cover of sleeve is equipped with the extrusion crown plate, the sleeve bottom is equipped with external screw thread pipe, external screw thread pipe top and sleeve bottom fixed connection, the gag lever post outside is located to external screw thread pipe box, extrusion crown plate bottom is equipped with the internal thread pipe, internal thread pipe top and extrusion crown plate bottom fixed connection, external screw thread pipe outside is located to the internal thread pipe box, internal thread pipe and external screw thread pipe thread connection.

Further, extrusion crown plate and internal thread pipe outer wall all fix and are equipped with a plurality of antislip strips, and a plurality of antislip strips evenly spaced sets up in extrusion crown plate and internal thread pipe outer wall.

Further, the length of the positioning block is consistent with the length between the through opening and the positioning groove.

Furthermore, a first rubber pad is fixedly arranged inside the positioning groove, and the first rubber pad is in contact with one side, close to the positioning groove, of the positioning block.

Furthermore, a second rubber pad is fixedly arranged at one end, far away from the positioning groove, of the positioning block, and the second rubber pad is in contact with the inner wall of the extrusion ring plate.

Furthermore, one side of the positioning block, which is far away from the limiting rod, is set to be arc-shaped, and the arc-shaped surface of one side of the positioning block, which is far away from the limiting rod, is matched with the outer wall of the sleeve.

Further, the two sliding grooves are symmetrically arranged about the central axis of the positioning groove.

Further, the two ports are symmetrically disposed about the sleeve central axis.

The embodiment of the utility model provides a have following advantage:

the utility model discloses a press the locating piece at both ends, make the locating piece shrink to the constant head tank in, then pass through the threaded connection of internal thread pipe and external screw thread pipe again, establish the fixed cover of extrusion crown plate in telescopic outside, make the extrusion crown plate one always extrude the locating piece, and let the spring be in the state of compressed all the time, carry out a spacing fixed to the locating piece, wholly connect nut and screw rod through the locating piece together, make the screw rod motion drive the nut motion, screw rod and nut are because of the connection of locating piece, only can keep unanimous motion, and can not take place because of vibrations, strike, variable load etc. makes the nut not hard up and lead to the problem that the screw rod drops.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

FIG. 1 is a front view of the overall structure provided by the present invention;

fig. 2 is a cross-sectional view of the overall structure provided by the present invention;

FIG. 3 is a cross-sectional view of the overall structure provided by the present invention without use;

fig. 4 is an enlarged view of a portion a in fig. 2 according to the present invention;

fig. 5 is a top view of the stop lever, the sleeve and the extrusion ring plate provided by the present invention.

In the figure: 1 bolt body, 2 nuts, 3 screw rods, 4 nuts, 5 limiting rods, 6 positioning grooves, 7 positioning blocks, 8 sleeves, 9 through holes, 10 sliding grooves, 11 springs, 12 sliding blocks, 13 extrusion ring plates, 14 external threaded pipes, 15 internal threaded pipes, 16 first rubber pads and 17 second rubber pads.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to the attached drawings 1-5 of the specification, the self-tightening anti-loosening hexagonal bolt comprises a bolt body 1, wherein the bolt body 1 comprises a nut 2 and a screw 3, the screw 3 is fixedly arranged at the bottom of the nut 2, the bottom of the bolt body 1 is in threaded connection with a nut 4, the nut 4 is arranged at the bottom of the nut 2, a limiting rod 5 is arranged below the nut 4, the top end of the limiting rod 5 is fixedly connected with the bottom end of the screw 3, positioning grooves 6 are respectively arranged at two sides of the limiting rod 5, positioning blocks 7 are arranged inside the positioning grooves 6, a sleeve 8 is movably sleeved outside the limiting rod 5, the sleeve 8 is arranged below the nut 4, through holes 9 are respectively arranged at two sides of the sleeve 8, the two through holes 9 are respectively arranged at one side of the two positioning grooves 6, sliding grooves 10 are respectively arranged at the top and the bottom of an inner cavity of the through holes 9, a spring 11 is arranged inside the sliding grooves 10, spring 11 and spout 10 keep away from one side inner wall fixed connection of gag lever post 5, spring 11 other end is fixed and is equipped with slider 12, the one end that gag lever post 5 was kept away from to locating piece 7 runs through constant head tank 6 and extends to inside opening 9, two slider 12 respectively with the top and the bottom fixed connection of locating piece 7 one side, sleeve 8 outside cover is equipped with extrusion ring board 13, sleeve 8 bottom is equipped with external screw thread pipe 14, external screw thread pipe 14 top and sleeve 8 bottom fixed connection, external screw thread pipe 14 cover is located the gag lever post 5 outside, extrusion ring board 13 bottom is equipped with internal thread pipe 15, internal thread pipe 15 top and extrusion ring board 13 bottom fixed connection, internal thread pipe 15 cover is located external screw thread pipe 14 outside, internal thread pipe 15 and external screw thread pipe 14 threaded connection, through the locating piece 7 of pressing both ends, makes locating piece 7 shrink to the constant head tank 6 in, then through the threaded connection of internal thread pipe 15 and external thread pipe 14, with the fixed cover of extrusion ring board 13 in the outside of sleeve 8, make extrusion ring board 13 extrude locating piece 7 always, and let spring 11 be in the state of compressed all the time, carry out a spacing fixed to locating piece 7, whole through locating piece 7 with nut 4 with screw rod 3 be connected together, make screw rod 3 move and drive nut 4 and move, screw rod 3 and nut 4 are because of the connection of locating piece 7, only can keep unanimous motion, and can not take place because of vibrations, strike, variable load etc. make nut 4 not hard up and lead to the problem that screw rod 3 drops.

Further,

extrusion crown plate

13 and 15 outer walls of internal thread pipe are all fixed and are equipped with a plurality of antislip strips, and a plurality of antislip strips evenly spaced sets up in

extrusion crown plate

13 and 15 outer walls of internal thread pipe, and increase frictional force is convenient for the user to taking of extrusion crown plate 13.

Furthermore, the length of locating piece 7 is unanimous with the length between opening 9 and the constant head tank 6, can accomodate locating piece 7 wholly, and occupation space is not accomodate effectually.

Furthermore, a first rubber pad 16 is fixedly arranged inside the positioning groove 6, and the first rubber pad 16 contacts with one side of the positioning block 7 close to the positioning groove 6, so that friction force is increased, and the positioning block 7 is not easy to slide.

Furthermore, a second rubber pad 17 is fixedly arranged at one end, far away from the positioning groove 6, of the positioning block 7, and the second rubber pad 17 is in contact with the inner wall of the extrusion ring plate 13, so that friction force is increased, and the positioning block 7 is not easy to slide.

Further, one side that gag lever post 5 was kept away from to locating piece 7 sets up to the arc, one side arcwall face and the 8 outer walls looks adaptations of sleeve that gag lever post 5 was kept away from to locating piece 7 cooperate with 13 inner walls of extrusion crown plate, can more steadily can not take place to protruding or accomodate the condition of not entering when receiving the extrusion.

Furthermore, the two sliding grooves 10 are symmetrically arranged about the central axis of the positioning groove 6, so that the two ends 7 of the positioning block are uniformly stressed.

Further, two ports 9 are symmetrical about the 8 central axes of sleeve and set up, and port 9 and constant head tank 6 use of mutually supporting, the removal of the locating piece 7 of being convenient for.

The implementation scenario is specifically as follows:

when the utility model is used, the bolt body 1 is arranged at the position to be installed, then the nut 4 is sleeved from the bottom of the limiting rod 5 and is in threaded connection with the bottom of the screw rod 3, the bolt body 1 is limited and fixed, then the positioning blocks 7 at two ends are pressed to ensure that the positioning blocks 7 are contracted into the positioning grooves 6, then the extrusion ring plate 13 is fixedly sleeved outside the sleeve 8 through the threaded connection of the internal thread pipe 15 and the external thread pipe 14, the extrusion ring plate 13 is always used for extruding the positioning blocks 7, the spring 11 is always in a compressed state, the positioning blocks 7 are limited and fixed, the nut 4 and the screw rod 3 are integrally connected through the positioning blocks 7, the screw rod 3 is used for driving the nut 4 to move, the screw rod 3 and the nut 4 only can keep consistent movement due to the connection of the positioning blocks 7, the problem that the screw rod 3 falls off due to the looseness of the nut 4 caused by vibration, impact, variable load and the like can not occur, after use, the screw can be detached at any time, the internal thread pipe 15 is rotated to be separated from the external thread pipe 14, the extrusion ring plate 13 is taken down, the extrusion ring plate 13 does not limit the positioning block 7, the positioning block 7 is separated from the positioning groove 6 through the pulling force of the reset of the spring 11, then the nut 4 can be rotated to be separated from the screw 3, and the screw 3 can be taken down without limiting the screw 3.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a self-tightening locking hexagon bolt, includes bolt body (1), its characterized in that: the bolt body (1) comprises a nut (2) and a screw rod (3), the screw rod (3) is fixedly arranged at the bottom of the nut (2), the bottom of the bolt body (1) is in threaded connection with the nut (4), the nut (4) is arranged at the bottom of the nut (2), a limiting rod (5) is arranged below the nut (4), the top end of the limiting rod (5) is fixedly connected with the bottom end of the screw rod (3), positioning grooves (6) are respectively formed in two sides of the limiting rod (5), a positioning block (7) is arranged inside the positioning groove (6), a sleeve (8) is movably sleeved outside the limiting rod (5), the sleeve (8) is arranged below the nut (4), through holes (9) are respectively formed in two sides of the sleeve (8), the two through holes (9) are respectively arranged on one side of the two positioning grooves (6), and sliding grooves (10) are respectively formed in the top and the bottom of an inner cavity of the through holes (9), the utility model discloses a spacing structure of a motor vehicle, including spout (10), spring (11) inside is equipped with spring (11), one side inner wall fixed connection of gag lever post (5) is kept away from with spout (10) in spring (11), spring (11) other end is fixed and is equipped with slider (12), the one end that gag lever post (5) were kept away from in locating piece (7) runs through constant head tank (6) and extends to inside port (9), two slider (12) respectively with the top and the bottom fixed connection of locating piece (7) one side, sleeve (8) outside cover is equipped with extrusion crown plate (13), sleeve (8) bottom is equipped with external screw tube (14), external screw tube (14) top and sleeve (8) bottom fixed connection, gag lever post (5) outside is located to external screw tube (14) cover, extrusion crown plate (13) bottom is equipped with internal thread pipe (15), internal thread pipe (15) top and extrusion crown plate (13) bottom fixed connection, the external thread pipe (14) outside is located to internal thread pipe (15) cover, internal thread pipe (15) and external thread pipe (14) threaded connection.

2. The self-tightening anti-loosening hexagonal bolt as claimed in claim 1, wherein: extrusion crown plate (13) and internal thread pipe (15) outer wall all fix and are equipped with a plurality of antislip strips, and a plurality of antislip strips evenly spaced sets up in extrusion crown plate (13) and internal thread pipe (15) outer wall.

3. The self-tightening anti-loosening hexagonal bolt as claimed in claim 1, wherein: the length of the positioning block (7) is consistent with the length between the through opening (9) and the positioning groove (6).

4. The self-tightening anti-loosening hexagonal bolt as claimed in claim 1, wherein: a first rubber pad (16) is fixedly arranged inside the positioning groove (6), and the first rubber pad (16) is in contact with one side, close to the positioning groove (6), of the positioning block (7).

5. The self-tightening anti-loosening hexagonal bolt as claimed in claim 1, wherein: and a second rubber pad (17) is fixedly arranged at one end of the positioning block (7) far away from the positioning groove (6), and the second rubber pad (17) is in contact with the inner wall of the extrusion ring plate (13).

6. The self-tightening anti-loosening hexagonal bolt as claimed in claim 1, wherein: one side of the positioning block (7) far away from the limiting rod (5) is arc-shaped, and the arc-shaped surface of one side of the positioning block (7) far away from the limiting rod (5) is matched with the outer wall of the sleeve (8).

7. The self-tightening anti-loosening hexagonal bolt as claimed in claim 1, wherein: the two sliding chutes (10) are symmetrically arranged around the central axis of the positioning groove (6).

8. The self-tightening anti-loose hexagon bolt according to claim 7, wherein: the two through openings (9) are arranged symmetrically with respect to the central axis of the sleeve (8).