CN211599243U - Check bolt assembly - Google Patents

Abstract

The utility model discloses an anti-loosening bolt assembly, comprising a loosening-proof bolt, an anti-loosening washer, a tightening nut and an anti-loosening fastener. The anti-loosening bolt further comprises a screw head, a boss, a stud and an external thread. The bottom of the screw head is provided with a boss, the bottom center of the boss is provided with a stud, the stud is provided with an external thread, and the outer side of the stud is sequentially provided with anti-loose washers, Tighten the nut and the anti-loosening fastener. The center of the anti-loosening washer and the tightening nut is provided with a through hole corresponding to the size of the stud, and the inner wall of the through hole of the tightening nut is provided with an internal thread, which is the same as the current one. Compared with the prior art, the utility model has the advantages of simple structure and reasonable design, which can effectively increase the friction force between the fastener and the connecting piece, absorb vibration and shock, ensure the long-term stability of the connection, and has excellent anti-loosening performance.

Description

An anti-loosening bolt assembly

【Technical field】

The utility model relates to the technical field of fasteners, in particular to an anti-loosening bolt assembly.

【Background technique】

Threaded fasteners are widely used in the fastening connection between various mechanical structures, involving ships, vehicles and many other industries and fields. It is easy and convenient to disassemble, and has a good fastening effect in a short time. However, during the working process of the existing threaded fasteners, due to the influence of device vibration, impact, and working condition changes, there will always be loosening and falling off, resulting in a decrease in the tightening force, etc., and even lead to connection failure and falling off, causing huge losses. There are potential safety hazards and even personal and property damage. Therefore, it is necessary to propose an anti-loosening bolt assembly.

【Content of utility model】

The purpose of the utility model is to solve the problems in the prior art, and proposes an anti-loosening bolt assembly. The utility model has a simple structure and a reasonable design, which can effectively increase the friction force between the fastener and the connecting piece, and absorb vibration and impact. , can ensure the long-term stability of the connection, and has excellent anti-loosening performance.

In order to achieve the above purpose, the utility model proposes an anti-loosening bolt assembly, which includes a locking bolt, a locking washer, a tightening nut and a locking fastener, and the locking bolt also includes a screw head, a boss, and a stud. and external thread, the bottom of the screw head is provided with a boss, the bottom center of the boss is provided with a stud, the stud is provided with an external thread, and the outer side of the stud is sequentially provided with Anti-loose washers, fastening nuts and anti-loose fasteners, the center of the anti-loose washers and the fastening nut is provided with a through hole corresponding to the size of the stud, and the inner wall of the fastening nut through hole is provided with internal thread.

Preferably, the screw head, the boss and the stud are designed in one piece, the screw head is a regular hexagonal prism, the top of the screw head is provided with a loading and unloading groove, and the bottom of the boss is also provided with anti-skid teeth The anti-slip tooth pattern is located on the outer side of the stud.

Preferably, an anti-slip layer is provided on the upper surface of the anti-loose gasket, a plurality of annular grooves are arranged on the anti-slip layer, an anti-slip ring is arranged in the annular groove, and the upper surface of the anti-slip ring is arranged A frosted pattern is arranged on the upper part, and a plurality of locking protrusions are arranged at the bottom of the anti-loosening gasket, and the locking protrusions are evenly distributed in an annular shape along the center of the anti-loosening gasket.

Preferably, the upper surface of the fastening nut is provided with clamping grooves corresponding to the clamping protrusions, the number of the clamping grooves is at least 4, and the bottom of the fastening nut is provided with a matching ring groove.

Preferably, the anti-loosening fastener includes a locking nut, a spring ring groove, a return spring, a buffer pad and a locking screw sleeve, the upper surface of the locking nut is provided with a spring ring groove, and the position of the spring ring groove is Corresponding to the matching ring groove, the spring ring groove is provided with a return spring, the bottom of the return spring is welded on the groove bottom of the spring ring groove, the top of the return spring is provided with a buffer pad, the anti-loosening The center of the nut is provided with an anti-loosening screw sleeve, the anti-loosening screw sleeve is provided with a connecting through hole, and the diameter of the connecting through hole is slightly smaller than the outer diameter of the external thread.

The beneficial effects of the present utility model:

The utility model has the advantages of simple structure and reasonable design. By arranging a boss with anti-slip tooth pattern and an anti-loose washer, the friction force between the bolt assembly and the contact surface of the connecting piece is increased, and the connection stability is improved; The locking washer is connected to the tightening nut in the way of locking protrusion and locking groove, which reduces the possibility of self-loosening of the locking washer during the vibration process; by setting the return spring and locking screw on the locking nut In the way of sleeve, the elastic force of the return spring is used to fix the tightening nut on the stud, which can effectively absorb vibration and shock while reducing the possibility of loosening the tightening nut. Looseness occurs during the actual service process, which ensures the anti-loose effect of the whole assembly.

【Description of drawings】

FIG. 1 is a schematic structural diagram of an anti-loosening bolt assembly of the present invention.

In the picture: 1- anti-loosening bolt, 11- screw head, 111- loading and unloading groove, 12- boss, 121- anti-skid tooth pattern, 13- stud, 2- anti-loosening washer, 21- anti-skid layer, 22- circle Ring groove, 23-anti-skid ring, 24-card protrusion, 3-fastening nut, 31-card groove, 32-alignment ring groove, 4-locking fastener, 41-locking nut, 42-spring ring groove, 43-Return spring, 44-Buffer pad, 45-Anti-loosening screw sleeve, 451-Connecting through hole, 5-Connecting piece.

【Detailed ways】

Referring to the accompanying drawings, an anti-loosening bolt assembly of the present utility model comprises a locking bolt 1, a locking washer 2, a tightening nut 3 and a locking fastener 4, and the locking bolt 1 further comprises a screw head 11, a boss 12. The stud 13 and the external thread 14, the bottom of the screw head 11 is provided with a boss 12, the bottom center of the boss 12 is provided with a stud 13, and the stud 13 is provided with an external thread, so The outer side of the stud 13 is provided with a locking washer 2, a tightening nut 3 and a locking fastener 4 in sequence from top to bottom. Corresponding through holes, the inner walls of the through holes of the fastening nut 3 are provided with internal threads.

The screw head 11 , the boss 12 and the stud 13 are designed in one piece, the screw head 11 is a regular hexagonal prism, and the top of the screw head 11 is provided with a loading and unloading groove 111 . The bottom is also provided with an anti-slip tooth pattern 121 , and the anti-slip tooth pattern 121 is located outside the stud 13 .

Wherein, an anti-slip layer 21 is provided on the upper surface of the anti-loose washer 2, a plurality of annular grooves 22 are arranged on the anti-slip layer 21, and an anti-slip ring 23 is arranged in the annular groove 22. The upper surface of the ring 23 is provided with a frosted pattern, and the bottom of the anti-loosening washer 2 is provided with a plurality of locking protrusions 24 , and the locking protrusions 24 are evenly distributed in a circular shape along the center of the locking washer 2 .

Wherein, the upper surface of the fastening nut 3 is provided with clamping grooves 31 corresponding to the clamping protrusions 24, the number of the clamping grooves 31 is at least 4, and the bottom of the fastening nut 3 is provided with a matching ring groove 32.

The anti-loosening fastener 4 includes a locking nut 41, a spring ring groove 42, a return spring 43, a buffer pad 44 and a locking screw sleeve 45, and the upper surface of the locking nut 41 is provided with a spring ring groove 42, The position of the spring ring groove 42 corresponds to the matching ring groove 32 , a return spring 43 is arranged in the spring ring groove 42 , and the bottom of the return spring 43 is welded on the groove bottom of the spring ring groove 42 . The top of the return spring 43 is provided with a buffer pad 44, the center of the anti-loosening nut 41 is provided with an anti-loosening screw sleeve 45, and the anti-loosening screw sleeve 45 is provided with a connecting through hole 451, The diameter is slightly smaller than the outer diameter of the male thread 14 .

The working process of the utility model:

In the working process of the anti-loosening bolt assembly of the present invention, the bolt 1 can be passed through the connecting hole on the connecting piece 6 first, and then the locking projection 24 on the anti-loosening washer 2 can be aligned with the locking nut on the tightening nut 3. Slot 31, install the lock washer 2 on the fastening nut 3, then install the fastening nut 3 on the bolt 1, and finally install the locking nut 41 on the bolt 1, so that the buffer pad 44 is embedded in the fastening nut Inside the matching ring groove 32 of 3, the installation of the bolt assembly is completed. Compared with the prior art, the present utility model has a simple structure and a reasonable design. The friction between the bolt assembly and the contact surface of the connecting piece is increased, and the connection stability is improved; by arranging the clamping protrusion 24 and the clamping groove 31, the anti-loose washer 2 is connected with the tightening nut 3, which reduces the During the vibration process of the anti-loose washer 2, the possibility of self-looseness occurs; by setting the reset spring 43 and the anti-loose nut 45 on the anti-loose nut 41, the elastic force of the reset spring 43 is used to fix the tightening nut 3 on. On the stud 13, while reducing the possibility of loosening the tightening nut 3, it can also effectively absorb vibration and shock, and the anti-loose nut 45 can prevent the anti-loose nut 4 from loosening during the actual service of the bolt assembly, ensuring the overall Anti-loosening effect of components.

The above embodiment is an illustration of the present utility model, not a limitation of the present utility model. Any simple transformation scheme of the present utility model belongs to the protection scope of the present utility model.

Claims (5)

1. An anti-loosening bolt assembly, characterized in that: comprising a locking bolt (1), a locking washer (2), a tightening nut (3) and a locking fastener (4), the locking bolt (1) ) also includes a screw head (11), a boss (12), a stud (13) and an external thread, the bottom of the screw head (11) is provided with a boss (12), and the bottom of the boss (12) A stud (13) is provided at the center, an external thread is provided on the stud (13), and an anti-loose washer (2) and a tightening nut ( 3) and the anti-loosening fastener (4), the center of the anti-loosening washer (2) and the tightening nut (3) is provided with a through hole corresponding to the size of the stud (13), and the tightening nut ( 3) An inner thread is provided on the inner wall of the through hole. 2. The anti-loosening bolt assembly according to claim 1, wherein the screw head (11), the boss (12), and the stud (13) are designed in one piece, and the screw head (11) ) is a regular hexagonal prism, the top of the screw head (11) is provided with a loading and unloading groove (111), the bottom of the boss (12) is also provided with anti-slip tooth patterns (121), the anti-slip tooth pattern (121) ) on the outside of the stud (13). 3. An anti-loosening bolt assembly according to claim 1, characterized in that: a non-slip layer (21) is provided on the upper surface of the anti-loosening washer (2), and an anti-skid layer (21) is provided on the upper surface. There are several annular grooves (22), an anti-slip ring (23) is arranged in the annular groove (22), a frosted pattern is arranged on the upper surface of the anti-slip ring (23), and the anti-loose gasket The bottom of (2) is provided with a plurality of snap protrusions (24), and the snap protrusions (24) are evenly distributed in an annular shape along the center of the anti-loose washer (2). 4. An anti-loosening bolt assembly according to claim 3, characterized in that: the upper surface of the fastening nut (3) is provided with a clamping groove (31) corresponding to the clamping protrusion (24), the The number of the clamping grooves (31) is at least 4, and the bottom of the fastening nut (3) is provided with a matching ring groove (32). 5. The anti-loosening bolt assembly according to claim 4, wherein the anti-loosening fastener (4) comprises a locking nut (41), a spring ring groove (42), a return spring (43), a buffer A washer (44) and a locking screw sleeve (45), the upper surface of the locking nut (41) is provided with a spring ring groove (42), the position of the spring ring groove (42) is the same as that of the matching ring groove ( 32) Correspondingly, the spring ring groove (42) is provided with a return spring (43), the bottom of the return spring (43) is welded on the groove bottom of the spring ring groove (42), and the return spring (43) ) is provided with a buffer pad (44) at the top of the nut (44), an anti-loosening nut (45) is provided at the center of the anti-loosening nut (41), and a connecting through hole (451) is provided on the anti-loosening nut (45). , the diameter of the connecting through hole (451) is slightly smaller than the outer diameter of the external thread (14).

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