Combinable special-shaped fastener

Abstract

The utility model relates to the technical field of special-shaped fasteners, and discloses a combinable special-shaped fastener which comprises a bending portion, the bending portion comprises a plurality of connecting pieces, the connecting pieces are distributed at equal intervals, one end of each connecting piece is fixedly connected with a connecting protruding block, and the other end of each connecting piece is fixedly connected with a connecting rod. Rotating shafts are coaxially arranged at the two ends of the connecting protruding block and fixedly connected with the connecting protruding block, the multiple connecting pieces are rotationally connected through the rotating shafts through the bending parts, when the device makes contact with the surface of the special-shaped workpiece, the multiple connecting pieces can be rotationally adjusted to be attached to the surface of the workpiece, and flexible adjustment can be achieved according to the size and model of the workpiece; the contact effect during fixing is improved, the fixing effect of the fastener is improved, the telescopic rod telescopically slides in the sliding groove, when the fastener is assembled, the number of connecting pieces can be increased, the overall length of the bent part can be adjusted, flexible adjustment can be achieved according to the perimeter of a workpiece to be fixed, and the application range of the fastener is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of special-shaped fasteners, in particular to a combinable special-shaped fastener. Background Art

[0002] Fasteners are also called standard parts in the market. They are a general term for a type of mechanical parts used to fasten two or more parts (or components) into a whole. They are characterized by a wide variety of specifications, different performances and uses, and a high degree of standardization, serialization, and generalization. Fasteners are the most widely used mechanical basic parts and are in great demand. At the same time, fasteners are divided into conventional fasteners and special fasteners. There is a bending process in the production process of special fasteners, which can form a bent structure.

[0003] In the prior art, there is an anti-fracture special-shaped fastener with the authorization publication number CN212003824U, which includes a fastener body, the fastener body is composed of a vertical part and a curved part, the two ends of the curved part are respectively fixed to one end of the vertical part, a second external thread is provided on the surface of the fastener body, and a limiting plate is fixed to the outer side of the second external thread, and threaded caps are provided at the upper and lower ends of the limiting plate, respectively, and both threaded caps are connected to the second external thread bolt. In this utility model, a limiting plate is sleeved on the surface of the fastener body, and the limiting plate is spirally connected to the external thread on the surface of the fastener through a fixed sleeve inside the limiting hole. By setting the limiting plate, it is convenient to limit the special-shaped fastener, thereby hindering the tension generated by the special-shaped fastener during use, preventing the special-shaped fastener from breaking, and improving the service life of the fastener.

[0004] In the above technical solution, the bending parts are usually made of stamped metal materials. During use, the bending part cannot be adjusted according to the curvature of the surface of the fixed workpiece, and it is difficult to adapt to the surface of the special-shaped workpiece and cannot fully contact the surface of the workpiece, which affects the fixing effect. For this reason, we propose a combinable special-shaped fastener. Utility Model Content

[0005] The utility model provides a combinable special-shaped fastener, which solves the technical problem that the bent parts are usually made of stamped metal materials, and the bent parts cannot be adjusted according to the curvature of the surface of the fixed workpiece during use, are difficult to adapt to the surface of the special-shaped workpiece, cannot fully contact the surface of the workpiece, and affect the fixing effect.

[0006] In order to solve the above technical problems, the utility model provides a combinable special-shaped fastener, comprising a bending portion, the bending portion comprising a plurality of connecting members, the plurality of connecting members being equidistantly distributed, one end of each connecting member being fixedly connected to a connecting protrusion, both ends of the connecting protrusion being coaxially provided with a rotating shaft, the rotating shaft being fixedly connected to the connecting protrusion, the other end of the connecting member being provided with a protrusion connecting groove, and both sides of the inner wall of the protrusion connecting groove being provided with a rotating shaft mounting groove;

[0007] The connecting protrusions at one end of the connecting piece are movably connected in the protrusion connecting grooves of the adjacent connecting piece, and the rotating shafts at both ends of the connecting protrusions are rotatably connected in the rotating shaft installation grooves inside the protrusion connecting grooves.

[0008] Preferably, the end of the shaft mounting groove passes through the outer wall of the connecting piece.

[0009] Preferably, a slide groove is provided in the central portion of the rotating shaft, a telescopic rod is slidably installed inside the slide groove, and one end of the telescopic rod movably extends to the inside of the rotating shaft installation groove.

[0010] Preferably, a return spring is fixedly mounted on the other end of the telescopic rod, and the return spring is fixedly mounted inside the slide groove.

[0011] Preferably, the connecting members at both ends are fixedly connected to fixing plates, and the fixing plates are provided with screw mounting holes.

[0012] Preferably, the lower surfaces of the two connecting members are fixedly connected to a limiting plate, both ends of the limiting plate are provided with threaded holes, and the two threaded holes are arranged in a one-to-one correspondence with the two screw mounting holes.

[0013] Preferably, a threaded rod is movably connected inside each of the screw mounting holes, and the lower end of the threaded rod is threadedly connected inside the threaded hole.

[0014] Compared with the related art, the combinable special-shaped fastener provided by the utility model has the following beneficial effects:

[0015] When in use, the bending portion is connected by a plurality of connecting parts through a rotating shaft. When in contact with the surface of a special-shaped workpiece, the plurality of connecting parts can be rotated and adjusted to fit the surface of the workpiece. The plurality of connecting parts can be flexibly adjusted according to the size and model of the workpiece, thereby improving the contact effect during fixation and improving the fixing effect of the fastener.

[0016] By telescopically sliding the telescopic rod in the slide slot, the number of connecting pieces can be increased when assembling the fasteners, and the overall length of the bending portion can be adjusted. The length can be flexibly adjusted according to the circumference of the workpiece to be fixed, thereby increasing the applicable range of the fasteners.

[0017] The end of the shaft installation groove passes through the outer wall of the connecting piece. During assembly, a tool can be inserted into the shaft installation groove to push the telescopic rod into the slide groove, which can facilitate the removal of the connecting piece and improve the convenience of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a combinable special-shaped fastener;

[0019] Figure 2 It is a structural schematic diagram of a connector of a combinable special-shaped fastener;

[0020] Figure 3 It is a schematic diagram of the structure of a top view of a connector of a combinable special-shaped fastener;

[0021] Figure 4 A modular special-shaped fastener Figure 3 Schematic diagram of the structure of the cross section at AA.

[0022] Numbers in the figure: 1, bending part; 11, connecting piece; 12, connecting protrusion; 13, rotating shaft; 131, sliding groove; 132, telescopic rod; 133, reset spring; 14, protrusion connecting groove; 15, rotating shaft mounting groove; 2, fixing plate; 3, screw mounting hole; 4, threaded rod; 5, limit plate; 6, threaded hole. DETAILED DESCRIPTION

[0023] 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.

[0024] Embodiment 1, by Figure 1-4 The utility model provides a modular special-shaped fastener, comprising a bending portion 1, the bending portion 1 comprising a plurality of connecting members 11, the plurality of connecting members 11 being equidistantly distributed, one end of each connecting member 11 being fixedly connected to a connecting protrusion 12, both ends of the connecting protrusion 12 being coaxially provided with a rotating shaft 13, the rotating shaft 13 being fixedly connected to the connecting protrusion 12, the other end of the connecting member 11 being provided with a protrusion connecting groove 14, the inner walls of both sides of the protrusion connecting groove 14 being provided with rotating shaft mounting grooves 15;

[0025] The connecting protrusions 12 at one end of the connecting member 11 are movably connected in the protrusion connecting grooves 14 of the adjacent connecting member 11 , and the rotating shafts 13 at both ends of the connecting protrusions 12 are rotatably connected in the rotating shaft installation grooves 15 inside the protrusion connecting grooves 14 .

[0026] In this embodiment, when in use, the bending portion 1 is rotatably connected by a plurality of connecting parts 11 through a rotating shaft 13. When in contact with the surface of a special-shaped workpiece, the plurality of connecting parts 11 can be rotated and adjusted to fit the surface of the workpiece. The plurality of connecting parts 11 can be flexibly adjusted according to the size and model of the workpiece, thereby improving the contact effect during fixation and improving the fixing effect of the fastener.

[0027] In this embodiment, the connecting members 11 at both ends are fixedly connected to the fixing plates 2, and the fixing plates 2 are provided with screw mounting holes 3. The lower surfaces of the two connecting members 11 are fixedly connected to the limiting plates 5, and threaded holes 6 are provided at both ends of the limiting plates 5. The two threaded holes 6 are arranged in a one-to-one correspondence with the two screw mounting holes 3. Each screw mounting hole 3 is movably connected with a threaded rod 4, and the lower end of the threaded rod 4 is threadedly connected to the threaded hole 6. The limiting plate 5 is connected to the bottom of the lowermost workpiece, and the screw mounting hole 3 and the threaded hole 6 are connected by the threaded rod 4, so that the workpiece can be fixed.

[0028] For example 2, please refer to Figure 4 In this embodiment, a slide groove 131 is provided at the center of the rotating shaft 13, and a telescopic rod 132 is slidably installed inside the slide groove 131. One end of the telescopic rod 132 is movably extended to the inside of the rotating shaft installation groove 15, and a return spring 133 is fixedly installed at the other end of the telescopic rod 132. The return spring 133 is fixedly installed inside the slide groove 131, and the end of the rotating shaft installation groove 15 penetrates the outer wall of the connecting member 11.

[0029] In this embodiment, the telescopic rod 132 is telescopically slidable in the slide groove 131, so that when assembling the fastener, the number of the connecting pieces 11 can be increased, and the overall length of the bending portion 1 can be adjusted. The length can be flexibly adjusted according to the circumference of the workpiece to be fixed, thereby increasing the applicable range of the fastener.

[0030] The end of the shaft installation groove 15 penetrates through the outer wall of the connecting member 11. During assembly, a tool can be inserted into the shaft installation groove 15 to push the telescopic rod 132 to move into the sliding groove 131, which can facilitate the removal of the connecting member 11 and improve the convenience of assembly.

[0031] Working principle:

[0032] When in use, the bending portion 1 is rotatably connected by a plurality of connecting parts 11 through a rotating shaft 13. When in contact with the surface of a special-shaped workpiece, the plurality of connecting parts 11 can be rotated and adjusted to fit the surface of the workpiece. It can be flexibly adjusted according to the size and model of the workpiece, thereby improving the contact effect during fixation and improving the fixing effect of the fastener.

[0033] By telescoping the telescopic rod 132 and sliding it in the slide groove 131, when assembling the fastener, the number of the connecting pieces 11 can be increased, and the overall length of the bending portion 1 can be adjusted. The length can be flexibly adjusted according to the circumference of the workpiece to be fixed, thereby increasing the applicable range of the fastener;

[0034] The end of the shaft installation groove 15 penetrates through the outer wall of the connecting member 11. During assembly, a tool can be inserted into the shaft installation groove 15 to push the telescopic rod 132 to move into the sliding groove 131, which can facilitate the removal of the connecting member 11 and improve the convenience of assembly.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can 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 should be included in the protection scope of the present invention.

Claims

1. A modular special-shaped fastener, comprising a bent portion (1), characterized in that: The bending portion (1) comprises a plurality of connecting members (11), the plurality of connecting members (11) are equidistantly distributed, one end of each connecting member (11) is fixedly connected to a connecting protrusion (12), both ends of the connecting protrusion (12) are coaxially provided with a rotating shaft (13), the rotating shaft (13) is fixedly connected to the connecting protrusion (12), the other end of the connecting member (11) is provided with a protrusion connecting groove (14), and both sides of the inner wall of the protrusion connecting groove (14) are provided with a rotating shaft mounting groove (15); The connecting protrusions (12) at one end of the connecting member (11) are movably connected in the protrusion connecting grooves (14) of the adjacent connecting member (11), and the rotating shafts (13) at both ends of the connecting protrusions (12) are rotatably connected in the rotating shaft installation grooves (15) inside the protrusion connecting grooves (14).

2. A combinable special-shaped fastener according to claim 1, characterized in that: The end of the rotating shaft installation groove (15) penetrates through the outer wall of the connecting member (11).

3. A combinable special-shaped fastener according to claim 2, characterized in that: A sliding groove (131) is provided at the center of the rotating shaft (13), a telescopic rod (132) is slidably installed inside the sliding groove (131), and one end of the telescopic rod (132) movably extends to the inside of the rotating shaft installation groove (15).

4. A combinable special-shaped fastener according to claim 3, characterized in that: A return spring (133) is fixedly mounted on the other end of the telescopic rod (132), and the return spring (133) is fixedly mounted inside the slide groove (131).

5. The combinable special-shaped fastener according to claim 1, characterized in that: The connecting pieces (11) at both ends are fixedly connected to fixing plates (2), and the fixing plates (2) are provided with screw mounting holes (3).

6. A combinable special-shaped fastener according to claim 5, characterized in that: The lower surfaces of the two connecting members (11) are fixedly connected to a limiting plate (5), both ends of the limiting plate (5) are provided with threaded holes (6), and the two threaded holes (6) are arranged in one-to-one correspondence with the two screw mounting holes (3).

7. A combinable special-shaped fastener according to claim 6, characterized in that: A threaded rod (4) is movably connected inside each of the screw rod mounting holes (3), and the lower end of the threaded rod (4) is threadedly connected inside the threaded hole (6).

Images