A snap-on anti-loose screw fastener

Abstract

The utility model belongs to screw technical field especially relates to a buckle type anti -loose screw fastener, a buckle type anti -loose screw fastener, including screw main part, the screw main part is sequentially provided with work thread and work vertical tooth along the length direction, work vertical tooth evenly distributed along the screw circumference, nut, anti -loose cap, anti -loose buckle, the anti -loose buckle is open ring structure, including integrative first ring buckle and second ring buckle, first ring buckle with first buckle groove is matched with second ring buckle with second buckle groove is matched, is used for fastening nut with Anti -loose cap. The utility model uses double ring buckle, and the nut and anti -loose cap are clamped simultaneously, and the anti -loose cap is engaged with the work vertical tooth on the screw through the anti -loose vertical tooth of inner wall setting, and the nut is clamped, and the nut, anti -loose cap and anti -loose claw form locking between two, and further constitute stable screw fastener.

Description

Technical Field

[0001] This utility model belongs to the field of screw technology, and specifically relates to a snap-fit ​​anti-loosening screw fastener. Background Technology

[0002] Bolted connections are a common connection method in mechanical engineering; however, under complex working conditions such as vibration, bolted connections are prone to loosening and failure. Existing technologies employ various methods to prevent loosening, including the use of clips for fastening. CN222731097U describes a unidirectional screw rod for formwork support. The unidirectional screw rod includes: a rod body, a control component and a construction component respectively disposed at a first end and a second end of the rod body; wherein the construction component includes: two folding rods and two springs disposed on the rod body, one end of each spring being disposed on the rod body, and the other end being connected to a folding rod; the control component includes: a clip and two steel wires; one end of each steel wire is connected to the clip disposed on the rod body, and the other end passes through a spring and is connected to a folding rod; the clip is adjusted based on the length of the two steel wires to switch the two folding rods between a folded state and an extended state. This technical solution uses clips, solving the installation and removal of the unidirectional control screw rod and ensuring safe construction, but there is still room for improvement in preventing loosening.

[0003] Therefore, the existing technology still lacks a bolt connection device that uses snap-fit ​​to solve the problem of loosening. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a snap-fit ​​anti-loosening screw fastener. The snap-fit ​​design ensures a precise and tight engagement between the nut and the anti-loosening cap, achieving "locking upon rotation." The detailed technical solution of this utility model is described below.

[0005] A snap-fit ​​anti-loosening screw fastener includes a screw body, wherein working threads and working vertical teeth are sequentially provided on the screw body along its length direction, and the working vertical teeth are evenly distributed along the circumference of the screw. The nut has an internal working thread on its inner wall that meshes with the working thread, and a plurality of axial grooves are distributed circumferentially on the end face of the nut. A first snap-fit ​​groove is provided on the outer wall of the nut on the side near the axial groove. The anti-loosening cap includes a hollow cap body, the inner wall of which is provided with anti-loosening vertical teeth that cooperate with the working vertical teeth, the end face of which is provided with a fastening protrusion corresponding to the axial groove of the nut, and a second snap-fit ​​groove is provided on the outer wall near the fastening protrusion. The anti-loosening buckle is an open annular structure, comprising an integrally formed first ring buckle and a second ring buckle. The first ring buckle cooperates with the first buckle groove and the second ring buckle cooperates with the second buckle groove, for fastening the nut and the anti-loosening cap.

[0006] This utility model uses a double-ring buckle to simultaneously lock the nut and the anti-loosening cap. The anti-loosening cap engages with the working vertical teeth on the screw through anti-loosening vertical teeth set on its inner wall, locking the nut. In this way, the nut, the anti-loosening cap and the anti-loosening claw form a lock between each other, thus forming a stable screw fastener.

[0007] Preferably, the first ring buckle and the second ring buckle are mirror-symmetrically distributed along the axis of symmetry of the anti-loosening buckle.

[0008] Preferably, both the first ring buckle and the second ring buckle include a buckle base, a first arc-shaped ring body and a second arc-shaped ring body respectively connected to both ends of the buckle base, a first free end connected to the first arc-shaped ring body, and a second free end connected to the second arc-shaped ring body. The first free end of the first ring buckle and the first free end of the second buckle are connected to form a first ear-shaped port, and the second free end of the first ring buckle and the second free end of the second buckle are connected to form a second ear-shaped port.

[0009] The buckle of this utility model has a multi-segment arc-shaped ring, which can be closely connected with nuts and lock caps while having good elasticity, and can meet the requirements of different nut and lock cap structures.

[0010] Preferably, the radii of curvature of the first arc-shaped ring and the second arc-shaped ring are adapted to the radii of curvature of the inner walls of the first snap-fit ​​groove and the second snap-fit ​​groove.

[0011] Preferably, both the first ring buckle and the second ring buckle have curved edges.

[0012] Preferably, the fastening protrusion is a single key or multiple keys.

[0013] Preferably, the screw body further includes a screw head, and the working thread is provided on the side close to the screw head.

[0014] The beneficial effects of this utility model are: (1) This utility model uses a double ring buckle to simultaneously lock the nut and the anti-loosening cap. The anti-loosening cap engages with the working vertical teeth on the screw through the anti-loosening vertical teeth set on the inner wall, locking the nut. In this way, the nut, the anti-loosening cap and the anti-loosening claw form a lock between each other, thus forming a stable screw fastener.

[0015] (2) The buckle of this utility model has a multi-segment arc-shaped ring, which can be closely connected with the nut and the anti-loosening cap while having good elasticity, and can meet the structure of nuts and anti-loosening caps with different rules.

[0016] (3) The buckle of this utility model has a flexible structure, does not require precise alignment of nuts and anti-loosening caps, is easy to install, can achieve efficient fastening, can meet the complex working conditions of high-speed rail, bridges, wind power generation, power transmission and industrial production equipment with strict requirements for spiral connection, and has broad market application prospects. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0018] Figure 2 This is a schematic diagram showing the disassembled parts of this utility model; Figure 3 This is a schematic diagram of the anti-loosening buckle of this utility model; Figure 4 This is a three-dimensional schematic diagram of the present invention without the screw head.

[0019] Reference numerals: 1. Screw body; 11. Working thread; 12. Working vertical tooth; 2. Nut; 21. Axial groove; 22. First snap groove; 3. Anti-loosening cap; 31. Cap body; 32. Anti-loosening vertical tooth; 33. Fastening protrusion; 34. Second snap groove; 4. Anti-loosening snap; 41. First ring snap; 42. Second ring snap; 43. Snap bottom; 44. First arc-shaped ring body; 45. Second arc-shaped ring body; 46. First free end; 47. Second free end; 48. First ear-shaped port; 49. Second ear-shaped port. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings: like Figures 1-3 The aforementioned snap-on anti-loosening screw fastener includes a screw body 1, on which working threads 11 and working vertical teeth 12 are sequentially provided along the length direction, and the working vertical teeth 12 are evenly distributed along the circumference of the screw. Nut 2, the inner wall of nut 2 is provided with a working internal thread that meshes with the working thread 11, the end face of nut 2 is provided with a plurality of axial grooves 21 distributed circumferentially, and the outer wall of nut 2 near the axial grooves 21 is provided with a first snap-fit ​​groove 22. The anti-loosening cap 3 includes a hollow cap body 31. The inner wall of the cap body 3 is provided with anti-loosening vertical teeth 32 that cooperate with the working vertical teeth 12. The end face of the cap body 31 is provided with a fastening protrusion key 33 corresponding to the axial groove 21 of the nut 2. A second snap-fit ​​groove 34 is provided on the outer wall near the fastening protrusion key 33. The anti-loosening buckle 4 is an open ring structure, including an integrally formed first ring buckle 41 and second ring buckle 42. The first ring buckle 41 cooperates with the first buckle groove 22 and the second ring buckle 42 cooperates with the second buckle groove 34, for fastening the nut 2 and the anti-loosening cap 3.

[0021] This utility model uses a snap-fit ​​connection. In a preferred embodiment, the first ring buckle 41 and the second ring buckle 42 are mirror-symmetrically distributed along the axis of symmetry of the anti-loosening buckle 4.

[0022] Both the first ring buckle 41 and the second ring buckle 42 include a buckle base 43, a first arc-shaped ring body 44 and a second arc-shaped ring body 45 respectively connected to both ends of the buckle base 43, a first free end 46 connected to the first arc-shaped ring body 44, and a second free end 47 connected to the second arc-shaped ring body 45. The first free end 46 of the first ring buckle 41 and the first free end of the second buckle 42 are connected to form a first ear-shaped port 48, and the second free end 47 of the first ring buckle 41 and the second free end of the second buckle 42 are connected to form a second ear-shaped port 49.

[0023] The radii of curvature of the first arc-shaped ring 44 and the second arc-shaped ring 44 are adapted to the radii of curvature of the inner walls of the first snap-fit ​​groove 22 and the second snap-fit ​​groove 34.

[0024] In a preferred embodiment, both the first ring buckle 41 and the second ring buckle 42 are arc-shaped (not shown).

[0025] In a preferred embodiment, the fastening protrusion 33 is a single key or multiple keys. Example 2

[0026] like Figure 4 As shown, this embodiment differs from Embodiment 1 in that the screw body does not include a screw head. In Embodiment 1, the screw body includes a screw head, and the working thread is located on the side near the screw head.

[0027] In summary, this utility model buckle has a flexible structure, does not require precise alignment of nuts and anti-loosening caps, is easy to install, can achieve efficient fastening, and can meet the complex working conditions of high-speed rail, bridges, wind power generation, power transmission and industrial production equipment with strict requirements for spiral connections, and has broad market application prospects.

[0028] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A snap-fit ​​type anti-loosening screw fastener, characterized in that, The screw body includes a screw body, on which working threads and working vertical teeth are sequentially provided along the length direction, and the working vertical teeth are evenly distributed along the circumference of the screw. The nut has an internal working thread on its inner wall that meshes with the working thread, and a plurality of axial grooves are distributed circumferentially on the end face of the nut. A first snap-fit ​​groove is provided on the outer wall of the nut on the side near the axial groove. The anti-loosening cap includes a hollow cap body, the inner wall of which is provided with anti-loosening vertical teeth that cooperate with the working vertical teeth, the end face of which is provided with a fastening protrusion corresponding to the axial groove of the nut, and a second snap-fit ​​groove is provided on the outer wall near the fastening protrusion. The anti-loosening buckle is an open annular structure, comprising an integrally formed first ring buckle and a second ring buckle. The first ring buckle cooperates with the first buckle groove and the second ring buckle cooperates with the second buckle groove, for fastening the nut and the anti-loosening cap.

2. The anti-loosening screw fastener according to claim 1, characterized in that, The first ring buckle and the second ring buckle are mirror-symmetrically distributed along the axis of symmetry of the anti-loosening buckle.

3. The anti-loosening screw fastener according to claim 2, characterized in that, Both the first ring buckle and the second ring buckle include a buckle base, a first arc-shaped ring body and a second arc-shaped ring body respectively connected to both ends of the buckle base, a first free end connected to the first arc-shaped ring body, and a second free end connected to the second arc-shaped ring body. The first free end of the first ring buckle and the first free end of the second buckle are connected to form a first ear-shaped port, and the second free end of the first ring buckle and the second free end of the second buckle are connected to form a second ear-shaped port.

4. The anti-loosening screw fastener according to claim 3, characterized in that, The radii of curvature of the first arc-shaped ring and the second arc-shaped ring are adapted to the radii of curvature of the inner walls of the first snap-fit ​​groove and the second snap-fit ​​groove.

5. The anti-loosening screw fastener according to claim 2, characterized in that, Both the first and second ring buckles have curved edges.

6. The anti-loosening screw fastener according to claim 1, characterized in that, The fastening convex key can be a single key or multiple keys.

7. The anti-loosening screw fastener according to claim 1, characterized in that, The screw body also includes a screw head, and the working thread is provided on the side close to the screw head.

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