Combined bolt and nut locking structure

Abstract

The utility model discloses an assembling bolt and nut anti-loose structure, which comprises a bolt piece and a nut piece, the bolt piece comprises an end part and a rod part, the lower end surface of the rod part is upwards provided with a fixing groove, the end part is downwards provided with a first positioning groove extending into the rod part, a second positioning groove communicated with the first positioning groove and the fixing groove is arranged between the first positioning groove and the fixing groove, a stop block is arranged at the fixing groove, and the stop block is fixedly connected with the rod part. The nut piece comprises a nut body, grooves formed in the centers of the upper end face and the lower end face of the nut body, threaded holes communicated with each other are formed between the bottoms of the two grooves, the threaded holes are connected with threads on the outer side of the rod portion in a matched mode, and the check blocks clamp the grooves. The check block is arranged to limit the nut, looseness prevention of the nut is achieved, the check block can be adjusted to guarantee that the check block abuts against the nut all the time, and the looseness prevention effect is guaranteed; meanwhile, the check block is arranged on the inner side of the rod part and the nut groove and does not protrude out of the whole structure, and it is guaranteed that use is attractive and convenient.

Description

Technical Field

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

[0002] The existing Chinese utility model patent with application number 202222305036.3 discloses a bolt and nut assembly, which uses a stopper to prevent the nut from loosening; however, the stopper is arranged at the lower end and does not contact the nut, and cannot effectively improve the anti-loosening performance of the nut and bolt connection; at the same time, the stopper is stabilized by gravity, and there is a problem that the nut cannot be stably limited when the bolt is arranged horizontally; on the other hand, the stopper is arranged in a protruding manner, and there is also a problem of unsightly and uncoordinated appearance when the bolt and nut cooperate to act on the fastened object, and the overall situation needs to be improved. Utility Model Content

[0003] The utility model aims to provide a combined bolt and nut with a simple structure and high anti-loosening and anti-stripping performance in view of the deficiencies in the above-mentioned background technology.

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

[0005] A combined bolt and nut anti-loosening structure comprises a bolt member and a nut member, the bolt member comprises an end portion and a rod portion, the upper end of the rod portion is connected to the end portion, a fixing groove is upwardly opened on the lower end surface of the rod portion, the fixing groove passes through the rod portion front and back, the end portion is downwardly provided with a first positioning groove extending into the rod portion, a second positioning groove connected to the bottom of the first positioning groove and the bottom of the fixing groove is provided, a stopper is arranged at the fixing groove, a positioning member is provided in the first positioning groove, the upper end of the stopper is connected to the positioning member through a connecting rod, the connecting rod passes through the second positioning groove, the nut member comprises a nut body, a groove is provided in the center of the upper and lower end surfaces of the nut body, a threaded hole connected to each other is opened between the bottoms of the two grooves, the threaded hole is adaptively connected to the thread on the outer side of the rod portion, and the stopper clamps the groove.

[0006] A further improvement of the combined bolt and nut anti-loosening structure of the utility model is that the cross section of the first positioning groove is T-shaped, the cross section of the positioning piece is also T-shaped, a thread groove is provided upward on the lower end surface of the positioning piece, and the upper end of the connecting rod also has a thread matching the thread groove.

[0007] A further improvement of the combined bolt and nut anti-loosening structure of the utility model is that a flower groove is arranged on the upper end surface of the positioning piece.

[0008] A further improvement of the combined bolt and nut anti-loosening structure of the utility model is that at least four groups of evenly arranged limiting grooves are opened at the upper and lower ends of the threaded hole, and the limiting grooves are arranged at the bottom of the groove close to the threaded hole.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model realizes the anti-loosening of the nut by setting a stopper to limit the nut, and the stopper can be adjusted to ensure that it always contacts the nut to ensure the anti-loosening effect; at the same time, the stopper is also set on the inner side of the rod and the nut groove, and does not protrude from the overall structure, ensuring that it is beautiful and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the bolt member of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the nut member of the utility model;

[0013] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure;

[0014] Figure 4 It is a structural schematic diagram of another embodiment of the nut member of the utility model.

[0015] In the figure: 1 end portion, 2 rod portion, 3 fixing groove, 4 first positioning groove, 5 stopper, 6 connecting rod, 7 nut body, 8 threaded hole, 9 groove, 10 limiting groove. DETAILED DESCRIPTION

[0016] 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.

[0017] like Figures 1 to 3 As shown, a combined bolt and nut anti-loosening structure includes a bolt member and a nut member. The bolt member includes an end 1 and a rod 2. The upper end of the rod is integrally connected to the end. A fixing groove 3 is provided upward on the lower end surface of the rod. The fixing groove penetrates the rod from front to back. A first positioning groove 4 extending into the rod is provided downward on the upper end surface of the end. A second positioning groove connected to the bottom of the first positioning groove and the bottom of the fixing groove is provided. A stopper 5 is arranged at the fixing groove. The stopper cross section is square and inclined. A positioning piece (not shown in the figure) is provided in the first positioning groove. The cross section of the first positioning piece is also T-shaped and can be a metal piece. The upper end of the stopper is connected to the positioning piece through a connecting rod 6. The connecting rod passes through the second positioning groove. The nut member includes a nut body 7. A groove 9 is provided at the center of the upper and lower end surfaces of the nut body. A threaded hole 8 connected to each other is provided between the groove bottoms of the two grooves. The threaded hole is adapted to be connected to the thread on the outer side of the rod. The stopper clamps the groove.

[0018] The first positioning groove has a T-shaped cross section, and the positioning piece also has a T-shaped cross section. The lower end surface of the positioning piece is provided with a thread groove upward, and the upper end of the connecting rod also has a thread matching the thread groove. This ensures the adjustment of the stopper and the positioning after adjustment. Furthermore, a flower groove is provided on the upper end surface of the positioning piece. This facilitates the use of tools to connect the positioning piece to the connecting rod.

[0019] like Figure 4 As shown, at least four groups of evenly arranged limit grooves 10 are provided at the upper and lower ends of the threaded hole, and the limit grooves are arranged at the bottom of the groove near the threaded hole. The corners of the stopper are inserted into the two groups of limit grooves at the lower end of the nut body to further prevent the nut from rotating relative to the stopper.

[0020] The working principle of the utility model is as follows: the bolt passes through the fastened object to connect the nut, and then the connecting rod passes through the second positioning groove in the first positioning groove. At this time, the stopper contacts the groove at the lower end of the nut at the fixing groove to achieve limiting, and the nut is fine-tuned so that the corners of the stopper can be embedded in the limiting groove. At this time, the stopper is in place, and then the positioning piece is arranged so that the positioning piece is connected to the connecting rod, and the overall bolt and nut arrangement is completed.

[0021] 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 combined bolt and nut anti-loosening structure, characterized in that: The bolt component comprises an end portion and a rod portion, the upper end of the rod portion is connected to the end portion, a fixing groove is upwardly provided on the lower end surface of the rod portion, the fixing groove passes through the rod portion front and back, the end portion is downwardly provided with a first positioning groove extending into the rod portion, a second positioning groove connected to the bottom of the first positioning groove and the bottom of the fixing groove is provided, a stopper is arranged at the fixing groove, a positioning piece is provided in the first positioning groove, the upper end of the stopper is connected to the positioning piece through a connecting rod, the connecting rod passes through the second positioning groove, the nut component comprises a nut body, a groove is provided in the center of the upper and lower end surfaces of the nut body, a threaded hole connected to the bottom of the two grooves is provided, the threaded hole is adapted to be connected to the thread on the outer side of the rod portion, and the stopper clamps the groove.

2. A combined bolt and nut anti-loosening structure according to claim 1, characterized in that: The first positioning groove has a T-shaped cross section, the positioning piece also has a T-shaped cross section, the positioning piece has a thread groove facing upward on the lower end surface, and the upper end of the connecting rod also has a thread matching the thread groove.

3. A combined bolt and nut anti-loosening structure according to claim 2, characterized in that: The upper end surface of the positioning piece is provided with a flower groove.

4. A combined bolt and nut anti-loosening structure according to claim 3, characterized in that: At least four groups of evenly arranged limiting grooves are provided at the upper and lower ends of the threaded hole, and the limiting grooves are arranged at the bottom of the groove close to the threaded hole.

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