Self-locking screw fastener

Abstract

The utility model discloses a self-locking type screw fastener which comprises a stud, a nut is arranged at the top end of the stud, a pressing seat is integrally arranged at the bottom end of the nut, a mounting groove is upwards formed in the bottom end of the pressing seat, a locking plate is arranged in the mounting groove, and the stud is sleeved with the locking plate in a sliding mode. An elastic connecting piece is arranged between the top end of the locking plate and the inner top wall of the mounting groove, first locking teeth are arranged at the bottom end of the locking plate in an annular array mode, a limiting base is arranged at the bottom end of the pressing base, second locking teeth are arranged on the limiting base in an annular array mode, and the first locking teeth and the second locking teeth are locked in an inclined wedge mode. According to the self-locking screw fastener, the self-locking function of the screw fastener in the using process can be improved, the situation that the screw fastener is loosened in the using process is avoided, and meanwhile the self-locking screw fastener is convenient to disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of screw fasteners, and more specifically, to a self-locking screw fastener. Background Art

[0002] Screw fasteners are elements used to connect two or more parts. They are fixed by rotating the screw to generate friction or preload, mainly including screws, nuts, nuts, washers, etc. They are widely used in various industries, including construction, automobiles, furniture, mechanical equipment, etc.

[0003] Screw fasteners are fastened by threaded rotation and limiting. However, in actual use, screw fasteners are easily loosened due to vibration, etc., thereby affecting the fastening and locking effect. In severe cases, they may loosen and fall off, affecting safety of use. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the problems existing in the prior art, the utility model provides a self-locking screw fastener to solve the technical problem mentioned in the background technology that the screw fasteners in the prior art are easily loosened due to vibration when being locked and fixed, thereby affecting the locking stability and safety of use.

[0006] (II) Technical solution

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A self-locking screw fastener comprises a stud, a nut is provided at the top of the stud, a clamping seat is integrally provided at the bottom end of the nut, a mounting groove is opened upward at the bottom end of the clamping seat, a locking plate is provided in the mounting groove, the locking plate is slidably sleeved on the stud, an elastic connecting piece is provided between the top end of the locking plate and the inner top wall of the mounting groove, a first locking tooth is provided in an annular array at the bottom end of the locking plate, a limiting seat is provided at the bottom end of the clamping seat, a second locking tooth is provided in an annular array on the limiting seat, the first locking tooth and the second locking tooth are obliquely wedge-locked, an anti-slip pad is provided below the limiting seat, and the anti-slip pad is movably sleeved on the stud.

[0009] The utility model is further configured such that a movable plate is provided on the sliding sleeve of the nut, a connecting column is provided at the bottom end of the movable plate, the bottom end of the connecting column slides and extends into the installation groove, and is connected to the top end of the locking plate, so as to facilitate the movement and adjustment of the locking plate, thereby facilitating the removal of the stud.

[0010] The utility model is further configured such that the elastic connecting member includes a spring arranged between the locking plate and the inner top wall of the installation groove, and a limited telescopic rod is arranged in conjunction with the spring to achieve elastic installation of the locking plate in the installation groove.

[0011] The utility model is further configured that a limited movement groove is provided on the moving plate, and the limited movement groove is slidably engaged with the nut to improve the installation stability of the moving plate.

[0012] The utility model is further configured that a limiting bolt is threadedly arranged on the movable plate to facilitate stable separation between the first locking tooth and the second locking tooth.

[0013] The utility model is further configured that a sealing gasket is arranged on the side wall of the locking plate to improve the installation sealing of the locking plate.

[0014] The utility model is further configured that a slide groove is provided on the pressing seat, and a sealing gasket is provided on the inner wall of the slide groove to cooperate with the connecting column to improve the installation sealing of the connecting column.

[0015] The utility model is further configured that both upper and lower ends of the anti-skid pad are provided with anti-skid ridges to improve the anti-skid property of the connection of the anti-skid pad.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a self-locking screw fastener having the following features:

[0018] Beneficial effects:

[0019] 1. The utility model provides a pressing seat at the bottom end of the nut, and a locking plate is elastically and retractably provided on the pressing seat, a first locking tooth is provided on the locking plate, and a limiting seat is provided at the same time, and a second locking tooth is provided on the limiting seat to cooperate with the first locking tooth, and the first locking tooth and the second locking tooth are obliquely wedge-locked. Since the first locking tooth at the bottom of the locking plate is obliquely wedge-locked with the second locking tooth on the limiting seat, the nut can control the pressing seat to drive the locking plate to rotate forward, but not reversely. The locking plate drives the first locking tooth to rotate, and the locking of the stud can be achieved. At the same time, the reverse rotation of the stud can be limited, thereby preventing the stud from loosening due to vibration and the like during use, and improving the stability of the screw fastener.

[0020] 2. The limit seat is located on the side of the external locking component close to the nut, and is fitted with the external locking component through the anti-slip pad. In this way, the friction between the limit seat and the external locking interface can be strengthened, so that when the first locking tooth rotates relative to the second locking tooth, the limit seat can be kept relatively stable.

[0021] 3. In the utility model, the locking plate is installed in the installation groove provided at the bottom of the pressing seat through an elastic connecting piece, so that the telescopic adjustment of the first locking tooth relative to the second locking tooth during rotation is facilitated, thereby improving the convenience and flexibility of the stud when locking and fixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The overall structure of a self-locking screw fastener in the utility model is shown in FIG. Figure 1 ;

[0023] Figure 2 The overall structure of a self-locking screw fastener in the utility model is shown in FIG. Figure 2 ;

[0024] Figure 3 The overall structure of a self-locking screw fastener in the utility model is shown in FIG. Figure 3 ;

[0025] Figure 4 It is a schematic cross-sectional view of the overall structure of the utility model;

[0026] Figure 5 It is a cross-sectional schematic diagram of the matching structure between the first locking tooth and the second locking tooth in the utility model;

[0027] Figure 6 For this utility model Figure 4 A magnified view of the local structure.

[0028] In the figure: 1. stud; 2. nut; 3. clamping seat; 4. mounting groove; 5. locking plate; 6. elastic connecting piece; 7. first locking tooth; 8. limiting seat; 9. second locking tooth; 10. anti-skid pad; 11. moving plate; 12. connecting column; 13. spring; 14. limiting telescopic rod; 15. limiting moving groove; 16. limiting bolt; 17. sealing gasket; 18. slide groove; 19. sealing gasket; 20. anti-skid ridge. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0031] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0032] See also Figure 1-5 A self-locking screw fastener comprises a stud 1, a nut 2 is arranged at the top of the stud 1, a pressing seat 3 is integrally arranged at the bottom end of the nut 2, a mounting groove 4 is opened upward at the bottom end of the pressing seat 3, a locking plate 5 is arranged in the mounting groove 4, the locking plate 5 is slidably sleeved on the stud 1, an elastic connecting member 6 is arranged between the top of the locking plate 5 and the inner top wall of the mounting groove 4, a first locking tooth 7 is arranged in an annular array at the bottom end of the locking plate 5, a limiting seat 8 is arranged at the bottom end of the pressing seat 3, a second locking tooth 9 is arranged in an annular array on the limiting seat 8, the first locking tooth 7 and the second locking tooth 9 are obliquely wedge-locked, an anti-slip pad 10 is arranged below the limiting seat 8, and the anti-slip pad 10 is movably sleeved on the stud 1.

[0033] See also Figure 1-Figure 6 As an implementation of a self-locking screw fastener: a movable plate 11 is slidingly sleeved on the nut 2, a connecting column 12 is provided at the bottom end of the movable plate 11, the bottom end of the connecting column 12 slides and extends into the mounting groove 4, and is connected to the top end of the locking plate 5.

[0034] Specifically, in this way, the movable plate 11 is pulled upward, and the connecting column 12 can be driven to move through the movable plate 11, and the locking plate 5 can be driven to move through the connecting column 12, and the first locking tooth 7 can be driven to move upward through the locking plate 5 and separate from the second locking tooth 9, thereby realizing the reverse rotation of the locking nut and facilitating the disassembly of the screw fastener.

[0035] See also Figure 1-Figure 6 As an implementation of the elastic connecting member 6: the elastic connecting member 6 includes a spring 13 arranged between the locking plate 5 and the inner top wall of the mounting groove 4, and a limited telescopic rod 14 is arranged in conjunction with the spring 13.

[0036] Specifically, the setting of the spring 13 can realize the elastic connection of the locking plate 5 in the installation groove 4. At the same time, under the pressure of the spring 13, when the screw fastener is locked and fixed, the first locking tooth 7 on the locking plate 5 and the second locking tooth 9 on the limit seat 8 can be tightly limited and engaged with each other, thereby realizing the self-locking limit of the screw fastener.

[0037] See also Figure 1-Figure 6As an implementation of the movable plate 11 , a limited movable groove 15 is provided on the movable plate 11 , and the limited movable groove 15 is slidably engaged with the nut 2 .

[0038] Specifically, the limited sliding installation of the moving plate 11 on the nut 2 is achieved by setting the limited moving groove 15, so as to facilitate the movement and adjustment of the moving plate 11.

[0039] See also Figure 1-Figure 6 As an implementation of the movable plate 11 , a limiting bolt 16 is threadedly provided on the movable plate 11 .

[0040] Specifically, by screwing the limit bolt 16, the bottom position of the limit bolt 16 can be adjusted, thereby adjusting the distance between the movable plate 11 and the clamping seat 3, so that the locking plate 5 can drive the first locking tooth 7 to move upward and separate from the second locking tooth 9. In this way, it is convenient to stably separate the first locking tooth 7 and the second locking tooth 9 when the screw fastener is disassembled.

[0041] See also Figure 1-Figure 6 As an implementation of the locking plate 5 , a sealing gasket 17 is provided on the side wall of the locking plate 5 .

[0042] Specifically, the sealing gasket 17 can be provided to achieve the sealing performance of the connection between the locking plate 5 and the inner wall of the mounting groove 4 .

[0043] See also Figure 1-Figure 6 As an implementation method of the pressing seat 3 , a slide groove 18 is provided on the pressing seat 3 , and a sealing gasket 19 is provided on the inner wall of the slide groove 18 to cooperate with the connecting column 12 .

[0044] Specifically, the sliding installation of the connecting column 12 in the installation groove 4 can be realized by the provision of the sliding groove 18 , and the provision of the sealing gasket 19 can improve the sealing performance of the connection between the connecting column 12 and the sliding groove 18 .

[0045] See also Figure 1-Figure 6 As an implementation of the anti-slip mat 10 , anti-slip ridges 20 are provided at both upper and lower ends of the anti-slip mat 10 .

[0046] Specifically, the provision of the anti-skid ridges 20 can improve the installation stability and anti-skid property of the limiting seat 8 during installation and use, and improve the limiting and locking function of the limiting seat 8 on the pressing seat 3.

[0047] In summary, when the overall equipment is in use:

[0048] The bottom end of the stud 1 passes through the external fixed position and is fixed by means of a nut thread lock, or the bottom end of the stud 1 is threadedly locked with the external locking interface;

[0049] During this process, the nut 2 is controlled to rotate, and the nut 2 will drive the pressing seat 3 to rotate, and the limiting seat 8 can be pressed and fixed by the pressing seat 3, so that the limiting seat 8 is pressed and fixed on the surface of the external installation component, thereby realizing the locking and fixing of the stud 1;

[0050] During this process, the limiting seat 8 is located on the side of the external locking component to be locked close to the nut 2, and is fitted with the external locking component through the anti-slip pad 10. During the screwing process, the pressing seat 3 will drive the locking plate 5 to rotate through the connection effect of the elastic connecting piece 6 and the connecting column 12. Since the first locking tooth 7 at the bottom of the locking plate 5 is obliquely wedge-locked with the second locking tooth 9 on the limiting seat 8, the pressing seat 3 can drive the locking plate 5 to rotate forward, but cannot rotate in the reverse direction. The locking plate 5 drives the first locking tooth 7 to rotate, and the locking of the stud 1 is achieved. At the same time, the reverse rotation of the stud 1 can be limited, thereby preventing the stud 1 from loosening due to vibration and other reasons during use, thereby improving the stability of the screw fastener.

[0051] In the utility model, the locking plate 5 is installed in the installation groove 4 opened at the bottom of the pressing seat 3 through the elastic connecting piece 6, so that the telescopic adjustment of the first locking tooth 7 relative to the second locking tooth 9 during the rotation process is facilitated, thereby improving the convenience and flexibility of the stud 1 when locking and fixing;

[0052] In addition, the provision of the anti-slip pad 10 can enhance the friction between the limit seat 8 and the external locking interface, so that when the first locking tooth 7 rotates relative to the second locking tooth 9, the limit seat 8 can be kept relatively stable;

[0053] When it is necessary to remove the screw fasteners, there are two ways:

[0054] 1. Pull the movable plate 11 outward directly, and the movable plate 11 can drive the connecting column 12 to move, and the connecting column 12 can drive the locking plate 5 to move in the installation groove 4, and the locking plate 5 can drive the first locking tooth 7 to move and separate from the second locking tooth 9, thereby releasing the rotation restriction of the second locking tooth 9 on the first locking tooth 7, and rotating the nut in the opposite direction to realize the removal of the stud 1;

[0055] 2. Tighten the limiting bolt 16 so that the bottom of the limiting bolt 16 presses downward against the top of the pressing seat 3, thereby making the movable plate 11 move relative to the pressing seat 3, and the locking plate 5 is driven to move through the cooperation between the movable plate 11 and the connecting column 12, so that the locking plate 5 can drive the first locking tooth 7 to move up and separate from the second locking tooth 9, so that the nut can drive the stud 1 to rotate in the opposite direction to achieve disassembly. In this way, when the screw fastener is disassembled, the first locking tooth 7 and the second locking tooth 9 are stably separated, and there is no need to additionally support the movable plate 11, thereby improving the convenience of use.

[0056] In all the schemes mentioned above, the connection between two parts can be selected according to the actual situation by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably considered to be welding. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents;

[0057] In all the schemes mentioned above, if there is no clear description, the operation of electrical components is controlled by the controller. Since the devices matched with the controller are common devices, their control principles and line connections are all well-known and mature technologies, and their electrical connection relationships and specific circuit structures are not described here.

[0058] In all the schemes mentioned above, the motor involved can be matched with a reducer if necessary. The connection structure and working principle between the motor and the reducer are existing well-known technologies, and the utility model will not elaborate on them.

[0059] Among all the solutions mentioned above, those involving the connection between solar panels and batteries can be equipped with necessary accessories such as inverters, battery charging controllers, cables, fuses, and brackets. Their control principles and line connections are all well-known and mature technologies, and their electrical connection relationships and specific circuit structures will not be described in detail here.

Claims

1. A self-locking screw fastener, comprising a stud (1), a nut (2) being arranged at the top of the stud (1), wherein: The bottom end of the nut (2) is integrally provided with a clamping seat (3), the bottom end of the clamping seat (3) is provided with an installation groove (4) upwardly, a locking plate (5) is provided in the installation groove (4), the locking plate (5) is slidably sleeved on the stud (1), an elastic connecting piece (6) is provided between the top end of the locking plate (5) and the inner top wall of the installation groove (4), a first locking tooth (7) is provided in an annular array at the bottom end of the locking plate (5), a limiting seat (8) is provided at the bottom end of the clamping seat (3), a second locking tooth (9) is provided in an annular array on the limiting seat (8), the first locking tooth (7) and the second locking tooth (9) are obliquely wedge-locked, an anti-skid pad (10) is provided below the limiting seat (8), and the anti-skid pad (10) is movably sleeved on the stud (1).

2. A self-locking screw fastener according to claim 1, characterized in that: A movable plate (11) is slidably sleeved on the nut (2), and a connecting column (12) is provided at the bottom end of the movable plate (11). The bottom end of the connecting column (12) slides and extends into the installation groove (4) and is connected to the top end of the locking plate (5).

3. A self-locking screw fastener according to claim 1, characterized in that: The elastic connecting member (6) comprises a spring (13) arranged between the locking plate (5) and the inner top wall of the mounting groove (4), and a limited telescopic rod (14) is arranged in conjunction with the spring (13).

4. A self-locking screw fastener according to claim 2, characterized in that: The movable plate (11) is provided with a limited movable groove (15), and the limited movable groove (15) is slidably engaged with the nut (2).

5. A self-locking screw fastener according to claim 4, characterized in that: The movable plate (11) is threadedly provided with a limit bolt (16).

6. A self-locking screw fastener according to any one of claims 1 to 5, characterized in that: A sealing gasket (17) is provided on the side wall of the locking plate (5).

7. A self-locking screw fastener according to claim 2, characterized in that: The pressing seat (3) is provided with a slide groove (18), and a sealing gasket (19) is provided on the inner wall of the slide groove (18) to cooperate with the connecting column (12).

8. The self-locking screw fastener according to claim 1, characterized in that: Anti-skid ridges (20) are provided at both upper and lower ends of the anti-skid pad (10).

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