Elastic locking fastener structure

Abstract

The utility model provides an elastic locking fastener structure which comprises a bolt, a nut and a part fixed by the bolt and the nut, the bolt is connected with an elastic washer, the elastic washer is located between the part and the nut, the elastic washer is spiral, the two ends of the elastic washer are arranged at intervals in the axial direction of the elastic washer, and the two ends of the elastic washer are connected with the nut. A locking groove is formed in the side face, facing the elastic washer, of the nut and the part, the locking groove is in a fan shape, the locking groove and the bolt are coaxially arranged, the depth from one end to the other end of the locking groove is gradually decreased, and the other end of the locking groove is flush with the side face of the nut or the part. After the nut is screwed, the end of the elastic washer abuts against and is matched with the locking groove in the circumferential direction, a structure for limiting the nut to loosen and rotate is formed, and therefore the anti-loosing capacity is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to an elastic locking fastener structure. Background Art

[0002] refer to Figure 1 As shown, an existing bolt and nut structure includes a bolt 01, a nut 02, and a washer 03. The washer 03 is spiral-shaped. When the nut 02 is tightened, the washer 03 plays a locking and anti-loosening role between the nut 02 and the fixed part.

[0003] After the spiral washer 03 is compressed by the nut 02, an elastic force is formed between the part and the nut 02, thereby enhancing the friction force and achieving the purpose of locking and preventing loosening.

[0004] The anti-loosening capability provided by the above-mentioned gasket 03 is limited, and there is room for improvement. Utility Model Content

[0005] In view of the problems pointed out in the background technology, the purpose of the utility model is to provide an elastic locking fastener structure with stronger locking and anti-loosening ability.

[0006] The technical solution of the utility model is achieved in this way:

[0007] An elastic locking fastener structure comprises a bolt and a nut and a part fixed by the bolt and the nut, wherein an elastic washer is connected to the bolt and is located between the part and the nut, the elastic washer is spiral-shaped, and the two ends of the elastic washer are arranged at intervals in the axial direction thereof, and locking grooves are arranged on the sides of the nut and the part facing the elastic washer, the locking grooves are fan-shaped, the locking grooves are coaxially arranged with the bolts, the depth of the locking grooves gradually decreases from one end to the other end, and the other end of the locking grooves is arranged flush with the side of the nut or the part.

[0008] The utility model is further configured such that the outer diameter of the elastic washer is equal to the outer diameter of the locking groove.

[0009] The utility model is further configured that protruding extrusion portions are provided on radial outer side walls at both ends of the elastic gasket.

[0010] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0011] (1) When the nut is tightened, the elastic washer can form elastic force in the axial direction, thereby increasing the friction and enhancing the anti-loosening ability.

[0012] (2) When the nut is tightened, the end of the elastic washer abuts against the locking groove in the circumferential direction to form a structure that limits the nut from loosening and rotating, thereby enhancing the anti-loosening capability.

[0013] (3) When the nut is tightened, the elastic washer is squeezed against the side wall of the locking groove through the extrusion portion in the radial direction, so that the elastic washer is tightly held on the bolt, thereby forming a locking force in the radial direction and enhancing the anti-loosening ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a structural schematic diagram of the prior art.

[0016] Figure 2 The utility model is shown in FIG. Figure 1 .

[0017] Figure 3 The utility model is shown in FIG. Figure 2 .

[0018] Figure 4 It is a structural schematic diagram of the elastic gasket of the utility model.

[0019] Figure 5 It is a cross-sectional view of the utility model.

[0020] Explanation of the numbers in the accompanying drawings: bolt 01, nut 02, elastic washer 03, locking groove 04, extrusion part 05, part 06. DETAILED DESCRIPTION

[0021] 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 of 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.

[0022] For reference Figure 1-4 The utility model is described as follows:

[0023] Embodiment 1: An elastic locking fastener structure comprises a bolt 01 and a nut 02 and a part 06 fixed by the bolt 01 and the nut 02. The part 06 is provided with a connecting hole connected to the screw rod of the bolt 01. The two parts 06 are fixedly connected by the bolt 01 and the nut 02.

[0024] The bolt 01 is connected with an elastic washer 03, which is located between the part 06 and the nut 02. The elastic washer 03 is spiral-shaped, and the two ends of the elastic washer 03 are spaced apart in the axial direction. The above is the prior art, and the following is the improved technical solution of this application:

[0025] A locking groove 04 is respectively provided on the side of the nut 02 and the part 06 facing the elastic washer 03. The locking groove 04 is fan-shaped and is coaxially arranged with the bolt 01. The locking groove 04 on the part 06 is connected with the connecting hole on the part, and the locking groove 04 on the nut 02 is connected with the threaded hole on its inner side.

[0026] In the circumferential direction of the bolt 01, the depth of the locking groove 04 gradually decreases from one end to the other end, and the other end of the locking groove 04 is flush with the side of the nut 02 or the part 06. The depth of the locking groove 04 on the part 06 gradually increases in the clockwise direction; the depth of the locking groove 04 on the nut 02 gradually decreases in the clockwise direction.

[0027] By adopting the above technical solution, when the nut 02 is tightened, the elastic washer 03 is compressed, and the two ends of the elastic washer 03 enter the locking grooves 04 on the nut 02 and the part 06 respectively, forming a locking fit.

[0028] Referring to the drawings of the present application, counterclockwise rotation of the nut 02 is the tightening direction, and clockwise rotation of the nut 02 is the loosening direction. After the nut 02 is tightened, if the nut 02 is to be loosened, the nut 02 needs to be rotated clockwise. The rotation of the nut 02 will be blocked by the elastic washer 03, and the clockwise rotation of the elastic washer 03 will be blocked by the part 06.

[0029] The outer diameter of the elastic washer 03 is equal to the outer diameter of the locking groove 04, and the radial outer side walls of both ends of the elastic washer 03 are provided with protruding extrusion parts 05. With this technical solution, the end of the elastic washer 0 enters the locking groove 04, which will form an extrusion on the elastic washer 03, so that the two ends of the elastic washer 03 are clamped on the bolt to form a locking force.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An elastic locking fastener structure, comprising a bolt (01) and a nut (02) and a part fixed by the bolt (01) and the nut (02), an elastic washer (03) connected to the bolt (01), the elastic washer (03) being located between the part and the nut (02), the elastic washer (03) being spiral-shaped, and the two ends of the elastic washer (03) being spaced apart in the axial direction thereof, characterized in that: A locking groove (04) is provided on the side of the nut (02) and the part facing the elastic washer (03), the locking groove (04) is fan-shaped, the locking groove (04) is coaxially arranged with the bolt (01), the depth of the locking groove (04) gradually decreases from one end to the other end, and the other end of the locking groove (04) is flush with the side of the nut (02) or the part.

2. The elastic locking fastener structure according to claim 1, characterized in that: The outer diameter of the elastic washer (03) is equal to the outer diameter of the locking groove (04).

3. The elastic locking fastener structure according to claim 1, characterized in that: The radial outer side walls at both ends of the elastic gasket (03) are provided with protruding extrusion portions (05).

Images