Fastener convenient to adjust

Abstract

The utility model discloses a fastener convenient to adjust, and belongs to the technical field of fasteners, the fastener convenient to adjust comprises a bolt, the bolt is provided with a threaded groove, the threaded groove is in threaded connection with a screw assembly, the screw assembly comprises a threaded rod and a polished rod, the threaded rod is fixedly connected with the polished rod, and the threaded rod is arranged on the lower side of the polished rod. A T-shaped ring is arranged outside the top end of the polished rod in a surrounding and sleeving mode, a connecting hole is formed in one side of the T-shaped ring, a connecting rod is arranged in the connecting hole, a handle is fixedly connected to one end of the connecting rod, a spring is arranged outside the handle in a surrounding mode, and the two ends of the spring are fixedly connected with the connecting rod and the inner wall of the connecting hole respectively. A nut assembly is arranged at the lower end of the T-shaped ring, the nut assembly comprises a nut with a thread part and a nut without a thread part, the universality of a connecting hole of a workpiece can be achieved, stable connection is guaranteed, and meanwhile the inconvenience influence caused by one end of an overlong bolt on workpiece machining or using is reduced to the maximum length.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, and more specifically, to a fastener that is convenient to adjust. Background Art

[0002] As one of the commonly used fasteners, bolts and nuts are widely used in various industrial fields. The required workpieces are connected together through the threaded connection of bolts and nuts, and can be reused.

[0003] In the process of using existing bolts and nuts, the bolt passes through the connection holes of two workpieces, and then is fixed by the nut. However, during connection, due to the different thicknesses of the workpieces and the non-adjustable length of the existing bolts, they lack universality in use. As a result, when connecting, it is necessary to select bolts of appropriate length for fixation. Thus, while ensuring that the bolt length meets the requirements for stable connection, it is also necessary to consider minimizing the excessively long part of the bolt after connection, so as to prevent one end of the overly long bolt from affecting the processing or use of the workpiece during the processing or use of the workpiece.

[0004] Therefore, a fastener that is convenient to adjust is proposed for the above problems. Content of the Utility Model

[0005] 1. Technical Problems to be Solved

[0006] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a fastener that is convenient to adjust, which can achieve universality for the connection holes of workpieces and ensure stable connection, while minimizing the inconvenient influence caused by one end of the overly long bolt on the processing or use of the workpiece to the greatest extent.

[0007] 2. Technical Solutions

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A fastening piece that is convenient to adjust, including a bolt. A threaded groove is provided on the bolt, and a screw rod assembly is threadedly connected to the threaded groove. The screw rod assembly includes a threaded rod and a smooth rod. The threaded rod and the smooth rod are fixedly connected, and the threaded rod is arranged below the smooth rod. A T-shaped ring is sleeved outside the top end of the smooth rod. A connection hole is provided on one side of the T-shaped ring. A connecting rod is arranged in the connection hole. One end of the connecting rod is fixedly connected with a handle. A spring is arranged outside the surrounding of the handle. Two ends of the spring are respectively fixedly connected with the connecting rod and the inner wall of the connection hole. A connection groove matching the connecting rod is provided on the smooth rod. A nut assembly is arranged at the lower end of the T-shaped ring. The nut assembly includes a threaded part nut and a non-threaded part nut. The threaded part nut is threadedly connected to the bolt. The threaded part nut and the non-threaded part nut are fixedly connected, and the threaded part nut is arranged below the non-threaded part nut. A limiting hole is provided on one side of the non-threaded part nut. A limiting rod is arranged in the limiting hole. A limiting groove matching the limiting rod is provided on the T-shaped ring.

[0010] Further, a plurality of pairs of balls are movably connected to the top end of the non-threaded part nut, and the balls are abutted against the bottom end of the T-shaped ring.

[0011] Further, the shapes of the limiting groove and the connection groove are set as circular rings.

[0012] Further, the limiting rod is threadedly connected to the limiting hole.

[0013] Further, anti-slip lines are engraved on the handle extending to one end of the T-shaped ring.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the advantages of the present utility model are as follows:

[0016] In this solution, by setting the bottom of the screw rod assembly to be threadedly connected to the threaded groove, and the bottom of the nut assembly to be threadedly connected to the bolt. When it is necessary to fix a workpiece, the T-shaped ring is sleeved on the screw rod assembly and the handle is pulled. When the T-shaped ring slides to the limit, the handle is released, so that the handle drives the connecting rod to enter the connection groove under the action of the spring, thereby completing the limitation of the smooth rod. Then, when the T-shaped ring is rotated, the bottom of the screw rod assembly starts to enter the threaded groove, thereby completing the fixation of the workpiece. When the thickness of the workpiece is less than the height of the bolt, after the threaded rod is completely screwed into the threaded groove, by screwing the limiting rod, the limitation of the T-shaped ring on the nut assembly is released, and then the screw rod assembly is screwed, so that the screw rod assembly is combined with the bolt, thereby completing the fixation of the workpiece through the screw rod assembly and the bolt. Thus, according to the thickness of the workpiece, the device can adapt to a suitable length to complete the fixation of the workpiece, avoiding the inconvenience caused by the bolt being too long or too short during the processing of the fixed workpiece by the equipment, thereby improving the efficiency of the staff in fixing the workpiece. Brief Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the front cross-section of the present utility model;

[0018] Figure 2 of the present utility model Figure 1 schematic diagram of the structure at A;

[0019] Figure 3 of the present utility model Figure 1 schematic diagram of the structure at B.

[0020] Explanation of the reference numerals in the drawings:

[0021] 1. Bolt; 2. Screw rod assembly; 3. Nut assembly; 4. T-shaped ring; 11. Thread groove; 21. Threaded rod; 22. Smooth rod; 23. Connecting groove; 31. Nut with threaded part; 32. Nut without threaded part; 33. Limiting hole; 34. Limiting rod; 35. Ball; 41. Limiting groove; 42. Connecting hole; 43. Spring; 44. Handle; 45. Connecting rod. Detailed Description of the Preferred Embodiment

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "sheathed / 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] Embodiment 1:

[0026] Please refer to Figures 1-3 , a fastening member that is easy to adjust, including a bolt 1. A threaded groove 11 is provided on the bolt 1. A screw rod assembly 2 is threadedly connected to the threaded groove 11. The screw rod assembly 2 includes a threaded rod 21 and a smooth rod 22. The threaded rod 21 and the smooth rod 22 are fixedly connected and the threaded rod 21 is arranged below the smooth rod 22. A T-shaped ring 4 is sleeved outside the top end of the smooth rod 22. A connection hole 42 is provided on one side of the T-shaped ring 4. A connecting rod 45 is arranged in the connection hole 42. One end of the connecting rod 45 is fixedly connected with a handle 44. A spring 43 is arranged outside the handle 44. Two ends of the spring 43 are respectively fixedly connected with the connecting rod 45 and the inner wall of the connection hole 42. A connection groove 23 matching the connecting rod 45 is provided on the smooth rod 22. A nut assembly 3 is arranged at the lower end of the T-shaped ring 4. The nut assembly 3 includes a threaded nut 31 and a non-threaded nut 32. The threaded nut 31 is threadedly connected to the bolt 1. The threaded nut 31 and the non-threaded nut 32 are fixedly connected and the threaded nut 31 is arranged below the non-threaded nut 32. A limiting hole 33 is provided on one side of the non-threaded nut 32. A limiting rod 34 is arranged in the limiting hole 33. A limiting groove 41 matching the limiting groove 41 is provided on the T-shaped ring 4. In this solution, by setting the bottom of the screw rod assembly 2 to be threadedly connected to the threaded groove 11 and the bottom of the nut assembly 3 to be threadedly connected to the bolt 1, when it is necessary to fix a workpiece, the T-shaped ring 4 is sleeved on the screw rod assembly 2 and the handle 44 is pulled. When the T-shaped ring 4 slides to the limit, the handle 44 is released, so that the handle 44 drives the connecting rod 45 to enter the connection groove 23 under the action of the spring 43, thereby completing the limitation of the smooth rod 22. Then, when the T-shaped ring 4 is rotated, the bottom of the screw rod assembly 2 starts to enter the threaded groove 11, thereby completing the fixation of the workpiece. When the thickness of the workpiece is less than the height of the bolt 1, after the threaded rod 21 is completely screwed into the threaded groove 11, the limiting rod 34 is rotated to release the limitation of the T-shaped ring 4 on the nut assembly 3, and then the screw rod assembly 2 is rotated, so that the screw rod assembly 2 is combined with the bolt 1, thereby completing the fixation of the workpiece through the screw rod assembly 2 and the bolt 1. Thus, according to the thickness of the workpiece, the device can adapt to a suitable length to complete the fixation of the workpiece, avoiding the inconvenience caused by the bolt 1 being too long or too short during the processing of the fixed workpiece by the equipment, thereby improving the efficiency of the staff in fixing the workpiece.

[0027] Please refer to Figure 3, a plurality of pairs of ball bearings 35 are movably connected to the top end of the threadless cloth nut 32, and the ball bearings 35 are abutted against the bottom end of the T-shaped ring 4. In this solution, the plurality of pairs of ball bearings 35 movably connected to the top end of the threadless cloth nut 32 are abutted against the bottom end of the T-shaped ring 4, so that when the thickness of the workpiece is less than the height of the bolt 1 during disassembly and screwing, when the nut assembly 3 is screwed to abut against the T-shaped ring 4, the friction between the nut assembly 3 and the T-shaped ring 4 can be reduced to protect the device.

[0028] Please refer to Figures 2-3 , the limiting groove 41 and the connecting groove 23 are arranged in an annular shape. In this solution, by arranging the limiting groove 41 and the connecting groove 23 in an annular shape, when the T-shaped ring 4 is combined with and separated from the nut assembly 3 and the T-shaped ring 4 is combined with and separated from the smooth rod 22, the installation and disassembly can be realized at any angle when the T-shaped ring 4 is sleeved on the screw rod assembly 2, thus saving time and improving efficiency.

[0029] Please refer to Figure 3 , the limiting rod 34 is threadedly connected to the limiting hole 33. In this solution, by threadedly connecting the limiting rod 34 to the limiting hole 33, the threaded connection between the T-shaped ring 4 and the nut assembly 3 is made more stable. Therefore, when the thickness of the workpiece is higher than the height of the bolt 1, it is more stable and effective to screw the T-shaped ring 4 to drive the nut assembly 3 to press the workpiece synchronously.

[0030] Please refer to Figure 2 , the handle 44 extends to one end of the T-shaped ring 4 and is engraved with anti-slip lines. In this solution, by engraving anti-slip lines on the handle 44 extending to one end of the T-shaped ring 4, it is possible to prevent slipping when the staff member completes the installation and disassembly of the smooth rod 22 by pulling the handle 44.

[0031] Working principle: When it is necessary to fix the workpiece, the bolt 1 and the screw rod assembly 2 are passed through the fixing holes on the workpiece, and then the T-shaped ring 4 and the nut assembly 3 are sleeved on the smooth rod 22. When the height of the workpiece is greater than the height of the bolt 1, the workpiece is fixed by screwing the T-shaped ring 4. When the height of the workpiece is less than the height of the bolt 1, when the threaded rod 21 is screwed completely into the thread groove 11, the limitation of the T-shaped ring 4 on the nut assembly 3 is released by screwing the limiting rod 34, and then the nut assembly 3 is screwed continuously so that the nut assembly 3 moves downward on the bolt 1 to complete the fixing of the workpiece, enabling the device to adjust the thickness of the workpiece to an appropriate length for fixing. When disassembly is required, when the thickness of the workpiece is greater than the height of the bolt 1, the screw rod assembly 2 is directly screwed to the limit, and then the limitation is released by pulling the handle 44, so that the T-shaped ring 4 and the nut assembly 3 are removed. It is also possible to directly screw the screw rod assembly 2 out of the thread groove 11, depending on the specific convenience. When the thickness of the workpiece is less than the height of the bolt 1, when the threaded part nut 31 is screwed to the limit, after fixing it by screwing the limiting rod 34, the handle 44 is pulled to move it out.

[0032] The above are only the preferred specific embodiments of the present utility model; however, the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its improved concept, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. An adjustable fastener, comprising a bolt (1), characterized in that: A threaded groove (11) is provided on the bolt (1), and a screw rod assembly (2) is threadedly connected to the threaded groove (11). The screw rod assembly (2) includes a threaded rod (21) and a smooth rod (22). The threaded rod (21) and the smooth rod (22) are fixedly connected, and the threaded rod (21) is arranged below the smooth rod (22). A T-shaped ring (4) is sleeved outside the top end of the smooth rod (22). A connection hole (42) is provided on one side of the T-shaped ring (4). A connecting rod (45) is arranged in the connection hole (42). One end of the connecting rod (45) is fixedly connected with a handle (44). A spring (43) is sleeved outside the handle (44). The two ends of the spring (43) are respectively fixedly connected with the connecting rod (45) and the inner wall of the connection hole (42). A connection groove (23) matching the connecting rod (45) is provided on the smooth rod (22). A nut assembly (3) is arranged at the lower end of the T-shaped ring (4). The nut assembly (3) includes a threaded nut (31) and a non-threaded nut (32). The threaded nut (31) is threadedly connected to the bolt (1). The threaded nut (31) and the non-threaded nut (32) are fixedly connected, and the threaded nut (31) is arranged below the non-threaded nut (32). A limiting hole (33) is provided on one side of the non-threaded nut (32). A limiting rod (34) is arranged in the limiting hole (33). A limiting groove (41) matching the limiting rod (34) is provided on the T-shaped ring (4).

2. The adjustable fastener according to claim 1, wherein: A plurality of pairs of balls (35) are movably connected to the top end of the non-threaded nut (32), and the balls (35) are abutted against the bottom end of the T-shaped ring (4).

3. The adjustable fastener according to claim 1, characterized in that: The shapes of the limiting groove (41) and the connection groove (23) are set to be circular rings.

4. The adjustable fastener according to claim 1, wherein: The limiting rod (34) is threadedly connected to the limiting hole (33).

5. The adjustable fastener according to claim 1, characterized in that: Anti-slip threads are engraved on the handle (44) extending to one end of the T-shaped ring (4).

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