Anti-loose threaded fastener structure

Abstract

The utility model belongs to the technical field of threaded fasteners, and discloses an anti-loose threaded fastener structure which comprises a top cap, a threaded rod is fixedly connected to the center of one end face of the top cap, a groove is formed in the outer wall of one side of the threaded rod, a clamping groove is formed in the inner side wall of the groove, a nut is in threaded connection with the outer wall of the threaded rod, and an anti-loose box is arranged on one side of the periphery of the nut. A second limiting assembly is arranged at the joint of the nut and the anti-loosening box, a built-in disc is arranged on the inner side of the bottom end of the anti-loosening box, a clamping column is fixedly connected to the center of the bottom of the built-in disc, and the clamping column is slidably connected to an inner cavity in the bottom end of the anti-loosening box in a penetrating and sleeving mode; according to the anti-loosening device, the anti-loosening box is arranged, so that the bearing effect on the structure body on the anti-loosening box is achieved, and meanwhile, the built-in disc, the clamping column, the pull rod, the pull ring and the spring are utilized to be matched with a groove and a plurality of clamping grooves formed in the threaded rod, so that the mutual locking and anti-loosening effects between the nut and the threaded rod are effectively achieved.

Description

Technical Field

[0001] The present application relates to the technical field of threaded fasteners, and more specifically, to an anti-loosening threaded fastener structure. Background Art

[0002] A nut, also known as a nut cap, is a fixing fastener tool with a hole in the center and threads on the inside of the hole. Nuts are often used together with bolts of matching size to fix the relevant joint parts. At the same time, the matching use of nuts and bolts can effectively position and install the workpiece. At present, the threaded fasteners composed of nuts and bolts are prone to loosening under the influence of factors such as vibration for a long time.

[0003] After searching, the publication number: CN215861253U discloses an anti-loosening threaded fastener, including a top cap, one side of the top cap is fixedly connected to a threaded rod, the top of the outer wall of the threaded rod is provided with a fixing groove, the bottom of the inner wall of the fixing groove is fixedly connected to a wedge-shaped rack, the surface of the threaded rod is threadedly connected to a nut, etc.; this application can solve the problem of loosening that is easy to occur in the fastened state when the threaded rod and the nut are used in combination, thereby effectively improving the stability of the matching connection between the two.

[0004] However, although this application can utilize the indirect driving of the pull ring on the wedge block and the cooperation between the wedge block and the wedge rack to achieve the anti-loosening cooperation effect between the threaded rod and the nut, due to the reset and holding state of the spring, the pull ring needs to be continuously pulled to keep the spring in a compressed state during the assembly and rotational feeding of the nut on the outer wall of the threaded rod, which leads to the problem of inconvenient operation in the assembly work between the nut and the threaded rod.

[0005] In order to solve the above problems, the present application provides an anti-loosening threaded fastener structure. Utility Model Content

[0006] The present application provides a threaded fastener structure that prevents loosening by adopting the following technical solution:

[0007] A threaded fastener structure for preventing loosening, comprising a top cap, a threaded rod being fixedly connected at the center position of one end face of the top cap, a groove being provided on one outer wall of the threaded rod, and a clamping slot being provided on the inner wall of the groove, a nut being screwed on the outer wall of the threaded rod, an anti-loosening box being provided on one side of the periphery of the nut, and a second limiting component being provided at the connection between the nut and the anti-loosening box, a built-in disk being provided on the inner side of the bottom end of the anti-loosening box, a clamping column being fixedly connected at the center of the bottom end of the built-in disk, the clamping column being slidably sleeved through the inner cavity of the bottom end of the anti-loosening box, and a pull rod being provided at the center of the top of the built-in disk Rod, a first limiting component is provided at the connection between the built-in disk and the pull rod, the pull rod is slidably sleeved through the inner cavity of the top of the anti-loosening box, and the top of the pull rod is connected with a pull ring, the outer wall of the lower side of the pull rod is provided with a spring, and the spring is fixedly installed at the connection between the inner wall of the top of the anti-loosening box and the top of the built-in disk, one side of the top of the anti-loosening box is in contact with an extension arm, the extension arm is fixedly installed on the outer wall of the upper side of the pull rod, and a hole is penetrated through the inner cavity of one side of the extension arm, an upper extension rod is fixedly installed on the other side of the top of the anti-loosening box, and a plug block is fixedly installed on the top of the upper extension rod.

[0008] Through the above technical solution, the top cap, the threaded rod and the nut are matched to form an existing threaded fastener.

[0009] Furthermore, a plurality of the card slots are provided, and the plurality of card slots are evenly distributed linearly on the inner side wall of the groove, and each card slot is card-engaged and adapted with the card column.

[0010] Through the above technical solution, multiple card slots can facilitate the card column to be engaged and matched at different positions.

[0011] Furthermore, the pull ring is in a circular ring structure, and is located outside the anti-loosening box, and an outer wall on one side of the pull ring is fixedly connected to one end of the pull rod through a connecting seat.

[0012] Through the above technical solution, the pull ring realizes the connecting and driving effect on the pull rod.

[0013] Furthermore, the jack and the plug block are both designed to be circular in structure, and the jack and the plug block are arranged to be plugged and adapted to each other.

[0014] Through the above technical solution, the insertion hole and the insertion block can achieve the matching and locking between the extension arm and the upper extension rod.

[0015] Furthermore, the first limiting assembly includes a T-shaped groove opened on the center position of one end of the pull rod facing the built-in disk, and the inner wall of the T-shaped groove is slidably sleeved with a T-shaped limiting shaft, and one end of the T-shaped limiting shaft extends out of the interior of the T-shaped groove and is fixedly connected to the center position of one end of the pull rod.

[0016] Through the above technical solution, the first limiting component realizes sliding limiting between the built-in disk and the pull rod.

[0017] Furthermore, the second limiting component includes an annular groove opened on one end surface of the nut facing the anti-loosening box, the annular groove is located on the outside of the central threaded hole of the nut, and a sliding block is slidably sleeved on the inner wall of the annular groove, one end of the sliding block passes through the annular groove and is fixedly connected to one side outer wall of the anti-loosening box.

[0018] Through the above technical solution, the second limiting component realizes sliding limiting between the anti-loosening box and the nut.

[0019] In summary, this application includes the following beneficial technical effects:

[0020] The anti-loosening box is provided to realize the supporting function of the upper structural body, and at the same time, the built-in disk, clamping column, pull rod, pull ring and spring are used to cooperate with the grooves and multiple clamping grooves provided on the threaded rod, so as to effectively realize the mutual locking and anti-loosening effect between the nut and the threaded rod, and the first limit assembly and the extension arm, the jack, the upper extension rod and the plug block are provided to achieve temporary locking of the compressed state after the spring is pulled, which can prevent the nut from being obstructed by the interference between the clamping column and the outer wall of the threaded rod during the assembly and rotation feeding of the outer wall of the threaded rod, and effectively avoid the continuous pulling operation of the pull ring, thereby effectively facilitating the assembly of the nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of this application;

[0022] Figure 2 A partial semi-exploded diagram of this application;

[0023] Figure 3 The internal diagram of the anti-loosening box of this application;

[0024] Figure 4 This is a semi-exploded diagram of the built-in disk and pull rod of this application.

[0025] Description of the numbers in the figure:

[0026] 1. Top cap; 2. Threaded rod; 3. Groove; 4. Slot; 5. Nut; 6. Anti-loosening box; 7. Built-in disk; 8. Clamp column; 9. Pull rod; 10. Pull ring; 11. Spring; 12. Extension arm; 13. Socket; 14. Upper extension rod; 15. Insert block; 16. T-shaped slide groove; 17. T-shaped limit shaft; 18. Annular slide groove; 19. Sliding block. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0028] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] Example:

[0031] The present application embodiment discloses a threaded fastener structure for preventing loosening. Figure 1 , Figure 2 , Figure 3 and Figure 4, including a top cap 1, a threaded rod 2 is fixedly connected to the center of one end face of the top cap 1, a groove 3 is provided on the outer wall of one side of the threaded rod 2, and a card slot 4 is provided on the inner wall of the groove 3, a nut 5 is screwed on the outer wall of the threaded rod 2, an anti-loosening box 6 is provided on one side of the outer periphery of the nut 5, and a second limiting component is provided at the connection between the nut 5 and the anti-loosening box 6, a built-in disk 7 is provided on the inner side of the bottom end of the anti-loosening box 6, a card column 8 is fixedly connected to the center of the bottom of the built-in disk 7, and the card column 8 is slidably sleeved in the inner cavity of the bottom end of the anti-loosening box 6, and a pull rod 9 is provided at the center of the top of the built-in disk 7, and the built-in disk 7 and the pull rod 9 are connected to the inner side of the bottom end of the anti-loosening box 6. A first limit assembly is provided at the connection, a pull rod 9 is slidably sleeved in the inner cavity at the top of the anti-loosening box 6, and a pull ring 10 is connected to the top of the pull rod 9, a spring 11 is provided on the outer wall of the lower side of the pull rod 9, and the spring 11 is fixedly installed at the connection between the inner wall at the top of the anti-loosening box 6 and the top of the built-in disk 7, one side of the top of the anti-loosening box 6 contacts with an extension arm 12, the extension arm 12 is fixedly installed on the outer wall on the upper side of the pull rod 9, and a plug hole 13 is provided in the inner cavity on one side of the extension arm 12, an upper extension rod 14 is fixedly installed on the other side of the top of the anti-loosening box 6, and an insert block 15 is fixedly installed on the top of the upper extension rod 14;

[0032] There are multiple card slots 4, which are evenly distributed linearly on the inner wall of the groove 3, and each card slot 4 is snap-fitted with the card column 8. The pull ring 10 is a circular ring structure, and the pull ring 10 is located outside the anti-loosening box 6, and one side of the outer wall of the pull ring 10 is fixedly connected to one end of the pull rod 9 through a connecting seat. The jack 13 and the plug block 15 are both circular in structure design, and the jack 13 and the plug block 15 are plug-fitted and matched;

[0033] The first limiting assembly includes a T-shaped slot 16 provided at the center of one end of the built-in disk 7 facing the pull rod 9, and a T-shaped limiting shaft 17 is slidably sleeved on the inner wall of the T-shaped slot 16, and one end of the T-shaped limiting shaft 17 extends out of the interior of the T-shaped slot 16 and is fixedly connected to the center of one end of the pull rod 9. Under the cooperation of the T-shaped slot 16 and the T-shaped limiting shaft 17, the pull rod 9 can be rotated when needed without affecting the driving effect of the pull rod 9 on the built-in disk 7;

[0034] The second limiting component includes an annular groove 18 opened on one end surface of the nut 5 facing the anti-loosening box 6. The annular groove 18 is located on the outside of the central threaded hole of the nut 5, and a sliding block 19 is slidably sleeved on the inner wall of the annular groove 18. One end of the sliding block 19 passes through the annular groove 18 and is fixedly connected to an outer wall of one side of the anti-loosening box 6.

[0035] The implementation principle of this embodiment is as follows: when in use, the nut 5 is slidably connected to the anti-loosening box 6 as a whole and is in a separated state from the threaded rod 2. After the external workpiece is screwed and positioned by the top cap 1 and the threaded rod 2, the nut 5 is required to be on the side of the workpiece away from the top cap 1 and to achieve the tightening effect of the workpiece through the cooperation with the threaded rod 2;

[0036] Before the nut 5 is assembled on the outer wall of the threaded rod 2 and rotated to feed, the pull ring 10 is used to pull the pull rod 9 to make the spring 11 produce a compressed deformation state, thereby indirectly greatly reducing the leakage length of the clamping column 8 outside the anti-loosening box 6. In this process, the extension arm 12 is driven to move beyond the length of the upper extension rod 14 and the insert block 15, and then the sliding limit between the T-shaped slide groove 16 and the T-shaped limit shaft 17 at the connection between the built-in disk 7 and the pull rod 9 is used through the pull ring 10. After the pull rod 9 rotates 180 degrees, the pull ring 10 is loosened slightly to make the insertion hole 13 on one side of the extension arm 12 plug into the plug block 15. At this time, the temporary locking operation of the spring 11 in the compressed state is completed, and the nut 5 can be operated to be assembled on the outer wall of the threaded rod 2 and rotated to feed, and the clamping column 8 is prevented from extending too long and causing interference with the threaded rod 2, thereby preventing the need to pull the pull ring 10 all the time during the assembly process of the nut 5 to avoid the problem of the clamping column 8 colliding with the threaded rod 2;

[0037] After the nut 5 is assembled and fastened to one side of the workpiece, the corresponding position and angle between the anti-loosening box 6 and the groove 3 are effectively adjusted by utilizing the circular sliding cooperation between the annular groove 18 and the sliding block 19, and the temporary locking state of the spring 11 is released. The reset and supporting action of the spring 11 is utilized to indirectly make the clamping column 8 engage with one of the corresponding clamping grooves 4, thereby achieving mutual locking between the nut 5 and the threaded rod 2, and can effectively prevent the threaded rod 2 from loosening or even falling off due to long-term use.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A threaded fastener structure for preventing loosening, comprising a top cap (1), characterized in that: A threaded rod (2) is fixedly connected at the center position of one end face of the top cap (1); a groove (3) is provided on one side outer wall of the threaded rod (2); and a clamping groove (4) is provided on the inner side wall of the groove (3); a nut (5) is screwed on the outer wall of the threaded rod (2); an anti-loosening box (6) is provided on one side of the outer periphery of the nut (5); and a second limiting component is provided at the connection between the nut (5) and the anti-loosening box (6); a built-in disk (7) is provided on the inner side of the bottom end of the anti-loosening box (6); a clamping column (8) is fixedly connected at the center of the bottom end of the built-in disk (7); the clamping column (8) is slidably sleeved in the inner cavity of the bottom end of the anti-loosening box (6); and a pull rod (9) is provided at the center of the top of the built-in disk (7); the built-in disk (7), the pull rod (9) and the anti-loosening box (6) are provided in a fixed manner at the center of the bottom end of the built-in disk (7); ) is provided at the connection of the first limit assembly, the pull rod (9) is slidably sleeved in the inner cavity at the top of the anti-loosening box (6), and the top of the pull rod (9) is connected to a pull ring (10), the outer wall of the lower side of the pull rod (9) is provided with a spring (11), and the spring (11) is fixedly installed at the connection between the inner wall at the top of the anti-loosening box (6) and the top of the built-in disk (7), one side of the top of the anti-loosening box (6) is in contact with an extension arm (12), the extension arm (12) is fixedly installed on the outer wall on the upper side of the pull rod (9), and the inner cavity on one side of the extension arm (12) is provided with a through-hole (13), the other side of the top of the anti-loosening box (6) is fixedly installed with an upper extension rod (14), and the top of the upper extension rod (14) is fixedly installed with an insertion block (15).

2. The anti-loosening thread fastener structure according to claim 1, characterized in that: A plurality of the card slots (4) are provided, and the plurality of card slots (4) are evenly distributed linearly on the inner side wall of the groove (3), and each card slot (4) is card-engaged and adapted with a card column (8).

3. The anti-loosening thread fastener structure according to claim 1, characterized in that: The pull ring (10) is in the form of a circular ring structure and is located outside the anti-loosening box (6). An outer wall on one side of the pull ring (10) is fixedly connected to one end of the pull rod (9) via a connecting seat.

4. The anti-loosening thread fastener structure according to claim 1, characterized in that: The plug hole (13) and the plug block (15) are both designed to be circular in structure, and the plug hole (13) and the plug block (15) are arranged to be plugged and adapted to each other.

5. The anti-loosening thread fastener structure according to claim 1, characterized in that: The first limiting assembly includes a T-shaped groove (16) opened at the center position of one end of the built-in disk (7) facing the pull rod (9), and the inner wall of the T-shaped groove (16) is slidably sleeved with a T-shaped limiting shaft (17), and one end of the T-shaped limiting shaft (17) extends out of the interior of the T-shaped groove (16) and is fixedly connected to the center position of one end of the pull rod (9).

6. The anti-loosening thread fastener structure according to claim 1, characterized in that: The second limiting component includes an annular groove (18) formed on one end surface of the nut (5) facing the anti-loosening box (6), the annular groove (18) is located outside the central threaded hole of the nut (5), and a sliding block (19) is slidably sleeved on the inner wall of the annular groove (18), and one end of the sliding block (19) passes through the annular groove (18) and is fixedly connected to one side outer wall of the anti-loosening box (6).

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