Self-locking fastener
By adopting a combined structure of extruded columns, moving grooves, self-locking blocks and self-locking plates in the fasteners, the problem of the nut loosening caused by vibration of traditional bolt fasteners is solved, and better tightening effect is achieved and stability.
Patent Information
- Application Number
- CN202421314659.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-06-11
AI Technical Summary
Traditional bolt fasteners are used for a long time, and the nuts are loose due to vibration and other reasons, making the tightening effect poor.
A self-locking fastener is designed, using a combined structure of extruded column, moving groove, self-locking block and self-locking plate. The extruded column is rotated by the tool to push the initial locking block, and then use the self-locking plate. Perform secondary self-locking to ensure the nut is secure.
It realizes that the nut is not easy to loosen during use, improves the fastening effect, and ensures the long-term stable use of the bolts.
Smart Images
Figure CN222526685U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bolts, in particular to a self-locking fastener. Background Art
[0002] Fasteners are a general term for a type of mechanical parts used to fasten two or more parts (or components) into a whole, and are also called standard parts in the market. Common fasteners mainly include bolts, studs, screws, nuts, self-tapping screws, wood screws, washers, retaining rings, pins, rivets, assemblies and connection pairs, welding nails, etc. Fasteners are widely used in construction, automobile manufacturing, aerospace, furniture manufacturing, electronic products, and machinery manufacturing.
[0003] When tightening, hexagonal bolts are generally used for tightening. However, there are still some problems with the traditional bolt fasteners when used. During the long-term use of the traditional bolt fasteners, the nut installed at one end is easily loosened due to vibration and other reasons, resulting in poor tightening effect of the bolt fasteners when tightening. Therefore, a self-locking fastener is needed to solve the above problems. Utility Model Content
[0004] The utility model aims to provide a self-locking fastener to solve the defect that the nut installed at one end of the existing bolt fastener is easily loosened due to vibration and the like during long-term use.
[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a self-locking fastener, comprising a fastener body and a bolt; a bolt is arranged at the top of the fastener body, a nut is arranged on the outside of one end of the bolt, a self-locking structure is arranged inside the nut, and auxiliary structures are arranged inside both ends of the nut; the self-locking structure comprises a movable groove, an extrusion column, a self-locking block, a movable groove and a self-locking sheet, and the movable groove is opened inside the nut.
[0006] Preferably, a self-locking block is arranged inside the movable groove, the movable groove is opened inside the fastener body at the top end of the movable groove, and an extrusion column is arranged inside the movable groove.
[0007] Preferably, the extrusion column is inserted into the interior of the movable groove, and a threaded connection is formed between the movable groove and the extrusion column.
[0008] Preferably, the inner diameter of the movable groove is larger than the outer diameter of the self-locking block, and a sliding connection is formed between the movable groove and the self-locking block.
[0009] Preferably, a plurality of the self-locking blocks are provided, and the plurality of the self-locking blocks are distributed in a ring shape inside the nut.
[0010] Preferably, the auxiliary structure includes a fixing block, a mounting groove and a fixing rod, the mounting groove is opened inside the front and rear ends of the nut, a fixing rod is arranged inside the mounting groove, and a fixing block is movably connected to the outer side of the fixing rod.
[0011] Preferably, two groups of the fixing blocks are provided, and the two groups of the fixing blocks are symmetrically distributed at the front and rear ends of the nut.
[0012] The utility model provides a self-locking fastener, which has the advantages of:
[0013] By using the extrusion column and the movable groove in combination, the nut can be installed on one end of the bolt, and the extrusion column can be rotated by a tool to move it downward, thereby pushing the self-locking block to one side so that one side of it rests against the outside of the bolt for initial locking. Then, by using the self-locking plate, when the nut is installed on the outside of the bolt, the bolt will squeeze the self-locking plate to roll upward, and then get stuck in the screw groove of the bolt to perform a secondary self-locking on the nut, thereby realizing the self-locking work of the bolt. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a front view structural schematic diagram of the utility model;
[0015] Figure 2 It is a schematic diagram of the top view structure of the utility model;
[0016] Figure 3 It is a front view cross-sectional structural schematic diagram of the utility model;
[0017] Figure 4 For the utility model Figure 3 A schematic diagram of the partially enlarged structure at center A;
[0018] Figure 5 It is a schematic diagram of a partial structure of the utility model from a top view;
[0019] Figure 6 It is a schematic diagram of the partial structure of the utility model in a front view.
[0020] In the figure: 1. fastener body; 2. bolt; 3. nut; 4. self-locking structure; 401. movable groove; 402. extrusion column; 403. self-locking block; 404. movable groove; 405. self-locking sheet; 5. auxiliary structure; 501. fixed block; 502. installation groove; 503. fixing rod. 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 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.
[0022] The utility model embodiment provides a self-locking fastener, such as Figure 1-Figure 6 As shown, a self-locking fastener includes a fastener body 1 and a bolt 2; the bolt 2 is arranged at the top of the fastener body 1, a nut 3 is arranged on the outside of one end of the bolt 2, a self-locking structure 4 is arranged inside the nut 3, and auxiliary structures 5 are arranged inside both ends of the nut 3.
[0023] In a further preferred embodiment of the present invention, Figure 1-Figure 6 As shown: the self-locking structure 4 includes a movable groove 401, an extrusion column 402, a self-locking block 403, a movable groove 404 and a self-locking sheet 405, the movable groove 404 is opened inside the nut 3, the movable groove 404 is provided with a self-locking block 403, the movable groove 401 is opened inside the fastener body 1 at the top of the movable groove 404, the movable groove 401 is provided with an extrusion column 402, the extrusion column 402 is inserted into the movable groove 401, a threaded connection is formed between the movable groove 401 and the extrusion column 402, the inner diameter of the movable groove 404 is larger than the outer diameter of the self-locking block 403, a sliding connection is formed between the movable groove 404 and the self-locking block 403, a plurality of self-locking blocks 403 are provided, and the plurality of self-locking blocks 403 are distributed in a ring shape inside the nut 3.
[0024] Specifically, in this embodiment: when using the fastener body 1, the nut 3 can be installed on one end of the bolt 2 through the coordinated use of the extrusion column 402 and the movable groove 404, and then the extrusion column 402 is rotated by a tool to move it downward, thereby pushing the self-locking block 403 to move to one side, so that one side of it abuts against the outside of the bolt 2 for preliminary locking. Since one side of the self-locking block 403 is provided with a screw groove that matches the inner side of the nut 3, it can abut against the outside of the column bolt 2. After abutting, and then through the use of the self-locking plate 405, when the nut 3 is installed on the outside of the bolt 2, one end of the bolt 2 will squeeze the self-locking plate 405 to roll upward, and then the self-locking plate 405 is stuck in the screw groove of the bolt 2 to perform a secondary self-locking on the nut 3, thereby realizing the self-locking work of the nut 3, so that the nut 3 is not easy to fall off during use.
[0025] In a further preferred embodiment of the present invention, Figure 1-Figure 6As shown: the auxiliary structure 5 includes a fixing block 501, a mounting groove 502 and a fixing rod 503. The mounting groove 502 is opened inside the front and rear ends of the nut 3. The fixing rod 503 is arranged inside the mounting groove 502. The outer side of the fixing rod 503 is movably connected with the fixing block 501. Two groups of fixing blocks 501 are arranged, and the two groups of fixing blocks 501 are symmetrically distributed at the front and rear ends of the nut 3.
[0026] Specifically, in this embodiment, when there is no tool to remove the nut 3, the fixing block 501 can be flipped out from the inside of the installation groove 502, and then the nut 3 can be removed by using two sets of fixing blocks 501, so that it can be removed even without tools.
[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A self-locking fastener, comprising a fastener body (1) and a bolt (2); Features: A bolt (2) is arranged at the top end of the fastener body (1), a nut (3) is arranged on the outside of one end of the bolt (2), a self-locking structure (4) is arranged inside the nut (3), and auxiliary structures (5) are arranged inside both ends of the nut (3); The self-locking structure (4) comprises a movable groove (401), a squeeze column (402), a self-locking block (403), a movable groove (404) and a self-locking sheet (405), wherein the movable groove (404) is provided inside the nut (3).
2. A self-locking fastener according to claim 1, characterized in that: A self-locking block (403) is arranged inside the movable groove (404), the movable groove (401) is opened inside the fastener body (1) at the top end of the movable groove (404), and an extrusion column (402) is arranged inside the movable groove (401).
3. A self-locking fastener according to claim 2, characterized in that: The extrusion column (402) is inserted into the interior of the movable groove (401), and a threaded connection is formed between the movable groove (401) and the extrusion column (402).
4. A self-locking fastener according to claim 1, characterized in that: The inner diameter of the movable groove (404) is greater than the outer diameter of the self-locking block (403), and a sliding connection is formed between the movable groove (404) and the self-locking block (403).
5. A self-locking fastener according to claim 4, characterized in that: A plurality of the self-locking blocks (403) are provided, and the plurality of the self-locking blocks (403) are distributed in a ring shape inside the nut (3).
6. A self-locking fastener according to claim 1, characterized in that: The auxiliary structure (5) comprises a fixing block (501), a mounting groove (502) and a fixing rod (503); the mounting groove (502) is provided inside the front and rear ends of the nut (3); a fixing rod (503) is arranged inside the mounting groove (502); and the fixing block (501) is movably connected to the outer side of the fixing rod (503).
7. A self-locking fastener according to claim 6, characterized in that: Two groups of the fixing blocks (501) are provided, and the two groups of the fixing blocks (501) are symmetrically distributed at the front and rear ends of the nut (3).