CN216111670U

CN216111670U - Anti-loosening bolt assembly

Info

Publication number: CN216111670U
Application number: CN202122342689.4U
Authority: CN
Inventors: 严初铁
Original assignee: Ningbo Ruiya Fastener Manufacturing Co ltd
Current assignee: Ningbo Ruiya Fastener Manufacturing Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-03-22
Anticipated expiration: 2031-09-26

Abstract

The utility model discloses an anti-loosening bolt assembly, which comprises a bolt and a nut, wherein the bolt comprises a head and a screw part, the outer diameter of the screw part is smaller than that of the head, the screw part and the head are coaxially arranged, a lug boss in a regular hexagonal shape is arranged in the middle of the upper end surface of the head and is used for being matched with a wrench, the lug boss, the head and the screw part are integrally formed, the nut is sleeved outside the screw part and is in threaded connection with the screw part, a first rubber ring used for being sleeved outside the screw part is arranged on the upper end surface of the nut, an embedding groove used for embedding the lower end part of the first rubber ring is formed in the upper end surface of the nut, the outer peripheral wall of the first rubber ring is attached to the inner peripheral wall of the embedding groove, and the inner diameter of the first rubber ring is the same as the inner diameter of the nut; the nut and the bolt can be effectively prevented from loosening, so that the reliability of the two parts after being fixed can be improved.

Description

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

Bolt assembly is the fastener that is used for going on fixing two parts commonly used on the market at present, and bolt assembly on the market is fastening the back to two parts at two parts removal or the in-process of vibrations, and the phenomenon that bolt assembly takes off appears easily to can influence the fixed firmness of two parts.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the anti-loosening bolt assembly, after the bolt and the nut in the anti-loosening bolt assembly are used for fixing the two parts, the loosening phenomenon between the nut and the bolt can be effectively avoided, and thus, the reliability of the two parts after being fixed can be improved.

The utility model discloses an anti-loosening bolt assembly, which comprises a bolt and a nut, wherein the bolt comprises a head and a screw part with the outer diameter smaller than that of the head, the screw part and the head are coaxially arranged, a boss in a regular hexagonal shape is arranged in the middle of the upper end face of the head and used for being matched with a wrench, the boss, the head and the screw part are integrally formed, the nut is sleeved outside the screw part and is in threaded connection with the screw part, a first rubber ring used for being sleeved outside the screw part is arranged on the upper end face of the nut, an embedding groove used for embedding the lower end part of the first rubber ring is formed in the upper end face of the nut, the outer peripheral wall of the first rubber ring is attached to the inner peripheral wall of the embedding groove, and the inner diameter of the first rubber ring is the same as the inner diameter of the nut.

The anti-loosening bolt assembly is characterized in that a plurality of first bulges which are circumferentially distributed are arranged on the upper end face of the first rubber ring.

The anti-loosening bolt assembly is characterized in that the centers of the first bulges are all arranged on the circumference of the same first virtual circle, and the first bulges are distributed at equal intervals along the circumferential direction of the first virtual circle.

According to the anti-loosening bolt assembly, the second rubber ring is sleeved outside the screw rod part, and the upper end face of the second rubber ring is attached to the lower end face of the head part.

According to the anti-loosening bolt assembly, the plurality of second protrusions which are distributed circumferentially are arranged on the lower end face of the second rubber ring.

The center of each second protrusion is located on the circumference of the same second virtual circle, and the second protrusions are distributed equidistantly along the circumferential direction of the second virtual circle.

After the two components are fixed, the first rubber ring positioned on the nut can be expanded with the screw rod part positioned in the bolt after being extruded and deformed, so that the phenomenon that the nut and the bolt are loosened can be effectively avoided, and the reliability of the two components after being fixed can be improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic sectional structure of the present invention.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the utility model. That is, in some embodiments of the utility model, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The anti-loosening bolt assembly comprises a bolt 1 and a nut 2, wherein the bolt 1 comprises a head 11 and a screw part 12 with the outer diameter smaller than that of the head 11, the screw part 12 and the head 11 are coaxially arranged, a lug boss 13 in a regular hexagon shape is arranged in the middle of the upper end face of the head 11, the lug boss 13 is used for being matched with a wrench, the lug boss 13, the head 11 and the screw part 12 are integrally formed, the nut 2 is sleeved outside the screw part 12 and is in threaded connection with the screw part 12, a first rubber ring 3 used for being sleeved outside the screw part 12 is arranged on the upper end face of the nut 2, an embedding groove 21 used for enabling the lower end part of the first rubber ring 3 to be embedded into is arranged on the upper end face of the nut 2, the outer peripheral wall of the first rubber ring 3 is attached to the inner peripheral wall of the embedding groove 21, and the inner diameter of the first rubber ring 3 is the same as the inner diameter of the nut 2.

A plurality of first bulges 31 distributed circumferentially are arranged on the upper end surface of the first rubber ring 3; after the first bulges are arranged on the upper end face of the first rubber ring, the bolt and the nut fasten the two parts, friction force between the first rubber ring and the part close to the first rubber ring can be improved, and therefore the phenomenon that the nut rotates relative to the part can be further avoided, and the phenomenon that the nut loosens relative to the bolt can be further avoided.

The centers of the first bulges 31 are all on the circumference of the same first virtual circle, and the first bulges 31 are distributed at equal intervals along the circumferential direction of the first virtual circle; after adopting this kind of structure, can make every first bellied atress more even, can further improve first rubber ring promptly and be close to the frictional force between the part of first rubber ring, also can further avoid the relative part of nut and the phenomenon that the bolt takes off to appear loosening and take off.

The outer part of the screw rod part 12 is sleeved with a second rubber ring 4, and the upper end face of the second rubber ring 4 is attached to the lower end face of the head part 11; through the setting of second rubber ring, can improve the head of bolt and be close to the frictional force between the part of head, so, can avoid relative parts pivoted phenomenon to appear in the bolt, also can avoid appearing the phenomenon that takes off between bolt and the nut.

A plurality of second bulges 41 which are distributed circumferentially are arranged on the lower end surface of the second rubber ring 4; after the second protrusion is arranged on the lower end face of the second rubber ring, after the two parts are fastened by the bolt and the nut, the friction force between the second rubber ring and the part close to the second rubber ring can be improved, and therefore the phenomenon that the nut rotates relative to the part can be further avoided, and the phenomenon that the nut loosens relative to the bolt can be further avoided.

The centers of the second protrusions 41 are all on the circumference of the same second virtual circle, and the second protrusions 41 are distributed at equal intervals along the circumferential direction of the second virtual circle; after adopting this kind of structure, can make every bellied atress of second more even, can further improve the second rubber ring promptly and be close to the frictional force between the part of second rubber ring, also can further avoid the relative part of nut and the phenomenon that the bolt takes off to appear loosening and take off.

After the bolt and the nut are used for fixing the two components, the first rubber ring and the second rubber ring can be respectively pressed on the components on the corresponding sides, the lower end part of the first rubber ring is embedded into the caulking groove, the outer peripheral wall of the first rubber ring is attached to the inner peripheral wall of the caulking groove, and the inner diameter of the first rubber ring is the same as that of the nut, so that when the first rubber ring is extruded, the outer peripheral wall of the first rubber ring cannot be expanded outwards due to the limiting of the caulking groove, the first rubber ring can only be expanded and deformed towards the middle part, and therefore the screw part in the first rubber ring and the screw part in the bolt can be expanded tightly, and the phenomenon that the nut and the bolt are loosened can be further avoided; in addition, through the setting of first rubber ring and second rubber ring, can improve the frictional force between nut and bolt and one of them part respectively, so, can avoid nut and bolt relative parts pivoted phenomenon to the phenomenon that appears loosening between nut and the bolt can further be avoided.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides an anti-loosening bolt assembly, includes bolt (1) and nut (2), bolt (1) includes that head (11) and external diameter are less than screw portion (12) of head (11), screw portion (12) and head (11) coaxial setting, the up end middle part of head (11) is provided with boss (13) of regular hexagon shape, boss (13) are used for cooperating with the spanner, boss (13), head (11) and screw portion (12) integrated into one piece, nut (2) cover is established in the outside of screw portion (12) and with screw portion (12) threaded connection, its characterized in that: be provided with on the up end of nut (2) and be used for the cover to establish first rubber ring (3) of the outside of screw rod portion (12), be provided with on the up end of nut (2) and be used for supplying caulking groove (21) of the lower tip embedding of first rubber ring (3), the periphery wall of first rubber ring (3) pastes with the interior wall of caulking groove (21), the internal diameter of first rubber ring (3) is the same with the internal diameter of nut (2).

2. The anti-loosening bolt assembly according to claim 1, characterized in that a plurality of first protrusions (31) are arranged on the upper end surface of the first rubber ring (3) in a circumferential distribution.

3. Anti-loosening bolt assembly according to claim 2, wherein several first protrusions (31) are all centered on the circumference of one and the same first virtual circle, several first protrusions (31) being equally spaced in the circumferential direction of the first virtual circle.

4. The anti-loosening bolt assembly according to claim 1, wherein a second rubber ring (4) is sleeved outside the screw portion (12), and an upper end face of the second rubber ring (4) is attached to a lower end face of the head portion (11).

5. The anti-loose bolt assembly according to claim 4, characterized in that a plurality of second protrusions (41) are arranged on the lower end surface of the second rubber ring (4) and distributed circumferentially.

6. Anti-loosening bolt assembly according to claim 5, wherein several second protrusions (41) are all centered on the circumference of one and the same second virtual circle, several second protrusions (41) being equally spaced in the circumferential direction of the second virtual circle.