Bolt and nut anti-loosening combined suite

Abstract

The utility model discloses a bolt and nut anti-loosing combined suite, which comprises a bolt piece and a nut piece, the bolt piece comprises an end part and a rod part, the rod part comprises a fixed section and a threaded section, the lower end of the threaded section is provided with a plurality of limiting plates which are uniformly distributed in the circumferential direction, and the outer sides of the limiting plates obliquely protrude out of the rod part. The upper end face of the end portion is provided with a first fixing groove extending into the rod portion downwards, the lower end face of the threaded section is provided with a second fixing groove upwards, the second fixing groove is communicated with the first fixing groove, a first limiting piece is arranged in the first fixing groove, a second limiting piece is arranged in the second fixing groove, the lower end of the second limiting piece is connected with a limiting block, and the limiting block abuts against the limiting plate. The upper end of the second connecting piece is connected to the first limiting piece. The limiting plate is limited through the limiting block, then the limiting plate expands outwards to achieve connection limiting of the nut, and therefore the nut is prevented from loosening; and on the other hand, the positioning piece is arranged on the fixing section of the bolt rod part and used for abutting against a fastened object, the contact area is increased, and the fastening effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a bolt and nut anti-loosening combination kit. Background Art

[0002] The bolt and nut assembly is one of the common fasteners, which uses the threaded connection between the two to achieve a fixed connection between the fastened objects. The common bolt and nut connection may become loose due to rotation under vibration. In order to improve the anti-loosening performance of the bolt and nut, the existing utility model patent with application number 202222305036.3 discloses a bolt and nut assembly, which prevents the nut from falling off by setting a stopper. However, in actual use, the nut and the stopper may not be in contact, and the two are not limited. The stopper is limited by the counterweight. When the bolt is used in a horizontal condition, there is a problem that the nut cannot be limited. There is room for improvement overall. Utility Model Content

[0003] The utility model aims to provide a bolt and nut anti-loosening combination kit with a simple structure, which ensures the stability of the bolt and nut connection and improves the anti-loosening performance thereof, in view of the deficiencies existing in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a bolt and nut anti-loosening combination kit, which adopts the following technical solutions:

[0005] A bolt and nut anti-loosening combination kit comprises a bolt component and a nut component, the bolt component comprises an end portion and a rod portion, the rod portion comprises a fixed section and a threaded section, the fixed section is connected to the end portion, the lower end of the threaded section is provided with a plurality of circumferentially evenly arranged limit plates, the outer side of the limit plate is inclined and protrudes from the rod portion, the upper end surface of the end portion is downwardly provided with a first fixed groove extending into the rod portion, the lower end surface of the threaded section is upwardly provided with a second fixed groove, the second fixed groove is connected to the first fixed groove, the first fixed groove has a T-shaped cross-section, the second fixed groove is cylindrical, a T-shaped first limit piece is provided in the first fixed groove, a second limit piece is provided in the second fixed groove, the lower end of the second limit piece is connected to a limit block, the limit block abuts against the limit plate, and the upper end of the second connecting member is connected to the first limit piece.

[0006] A further improvement of the bolt and nut anti-loosening assembly kit of the utility model is that a thread groove is upwardly provided on the lower end surface of the first limiting member, a thread is provided on the upper end of the second limiting member, and the first limiting member is matched and connected with the second limiting member.

[0007] A further improvement of the bolt and nut anti-loosening combination kit of the utility model is that a positioning groove arranged transversely is provided on the fixing section, the positioning groove connects the first fixing groove and the outside, a positioning piece is provided in the positioning groove, and the first limiting piece abuts against the positioning piece.

[0008] A further improvement of the bolt and nut anti-loosening assembly kit of the utility model is that the positioning groove is arranged at one end of the fixing section close to the end, and the positioning piece is L-shaped.

[0009] A further improvement of the bolt and nut anti-loosening combination kit of the utility model is that the limiting block is cylindrical and a friction protrusion is arranged on the outer periphery of the limiting block.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model limits the limiting plate by the limiting block, and then the limiting plate is stretched outward to achieve connection limitation of the nut, thereby preventing the nut from loosening; on the other hand, a positioning piece is provided on the fixed section of the bolt rod, which is used to contact with the fastened object, increase the contact area, and improve the fastening effect; at the same time, the first limiting piece and the second limiting piece are connected to ensure the stability of the limitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] In the figure: 1 end portion, 2 rod portion, 3 fixed section, 4 threaded section, 5 limit plate, 6 limit block, 7 first limit member, 8 second limit member, 9 positioning member, 10 friction protrusion. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] like Figure 1As shown, a bolt and nut anti-loosening combination kit includes a bolt member and a nut member, the bolt member includes an end 1 and a rod 2, the rod includes a fixed section 3 and a threaded section 4, the fixed section is connected to the end, and the lower end of the threaded section is provided with a plurality of circumferentially evenly arranged limit plates 5, the outer side of the limit plates is inclined and protrudes from the rod, and the outer side of the limit plates can also be provided with threads that are the same as the threads of the threaded part. The upper end surface of the end is downwardly provided with a first fixed groove extending into the rod, and the lower end surface of the threaded section is upwardly provided with a second fixed groove, the second fixed groove is connected to the first fixed groove, and the cross-sectional area of ​​the second fixed groove is smaller than the cross-sectional area of ​​the first fixed groove. The cross-section of the first fixed groove is T-shaped, and the second fixed groove is cylindrical. A first T-shaped limit piece 7 is provided in the first fixed groove, and a second limit piece 8 is provided in the second fixed groove. The lower end of the second limit piece is connected to a limit block 6, and the connection method can be a welding connection. The limit block abuts against the limit plate, and the upper end of the second connecting member is connected to the first limit piece. The limit piece and the limit block can be metal parts.

[0016] A thread groove is upwardly arranged on the lower end surface of the first limiting member, a thread is arranged on the upper end of the second limiting member, and the first limiting member is matched and connected with the second limiting member.

[0017] Furthermore, a positioning groove is arranged transversely on the fixing section, the positioning groove communicates with the first fixing groove and the outside, a positioning member 9 is arranged in the positioning groove, and the first limit member abuts against the positioning member. The positioning groove is arranged at one end of the fixing section close to the end, and the positioning member is L-shaped. When the bolt is working, a gasket can be arranged, and the gasket is flush with the upper part of the positioning member, and then the positioning member can be pressed against the fastened object, thereby improving the stability of the bolt connection.

[0018] The limiting block is cylindrical, and the outer periphery of the limiting block is provided with a friction protrusion 10. When in use, it is convenient to increase the friction with the limiting plate, and it is convenient to hold and position the first limiting piece and screw the second limiting piece.

[0019] The working principle of the utility model is as follows: the positioning pieces are arranged, and the bolt rod is passed through the fastened object. At this time, the positioning piece contacts the fastened object, and then the nut is connected. After the nut is in place, the limit block is inserted so that the limit plate expands outward and contacts the nut. Then the limit block is manually positioned, and the first limit piece is inserted into the first limit groove and is screwed with the second limit piece. At this time, the first limit piece also contacts the positioning piece to achieve overall limiting and improve the overall anti-loosening performance of the bolt and nut.

[0020] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A bolt and nut anti-loosening combination kit, characterized by: The bolt member includes an end portion and a rod portion, the rod portion includes a fixed section and a threaded section, the fixed section is connected to the end portion, the lower end of the threaded section is provided with a plurality of circumferentially evenly arranged limit plates, the outer side of the limit plate is inclined and protrudes from the rod portion, the upper end surface of the end portion is downwardly provided with a first fixed groove extending into the rod portion, the lower end surface of the threaded section is upwardly provided with a second fixed groove, the second fixed groove is connected to the first fixed groove, the first fixed groove has a T-shaped cross-section, the second fixed groove is cylindrical, a T-shaped first limit piece is provided in the first fixed groove, a second limit piece is provided in the second fixed groove, the lower end of the second limit piece is connected to a limit block, the limit block abuts against the limit plate, and the upper end of the second connecting member is connected to the first limit piece.

2. A bolt and nut anti-loosening assembly kit according to claim 1, characterized in that: The lower end surface of the first limiting member is upwardly provided with a thread groove, the upper end of the second limiting member is provided with a thread, and the first limiting member is matched and connected with the second limiting member.

3. A bolt and nut anti-loosening assembly kit according to claim 2, characterized in that: The fixing section is provided with a positioning groove arranged transversely, the positioning groove is connected with the first fixing groove and the outside, a positioning piece is provided in the positioning groove, and the first limiting piece abuts against the positioning piece.

4. A bolt and nut anti-loosening assembly kit according to claim 3, characterized in that: The positioning groove is arranged at one end of the fixing section close to the end, and the positioning piece is L-shaped.

5. A bolt and nut anti-loosening assembly kit according to claim 4, characterized in that: The limiting block is cylindrical, and a friction protrusion is arranged on the outer periphery of the limiting block.

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