Fastener with double-sided fixing function

Abstract

The utility model discloses a double-sided fixed fastener which comprises a screw rod, a large nut is sleeved on the outer side of the screw rod, an opening groove is arranged on the surface of the screw rod, a hook rod is movably connected inside the opening groove, a torsion spring shaft used for moving is arranged between one end of the hook rod and the inside of the opening groove, and the other end of the hook rod is fixedly connected with the torsion spring shaft. The outer side of the opening groove is movably sleeved with a gasket, and the upper side surface and the lower side surface of the gasket are fixedly bonded with anti-skid rubber mats. The opening groove is formed in the surface of the screw rod, the hook rod is connected into the opening groove through the torsional spring shaft, the hook rod and the screw rod form an elastic rotating structure through the torsional spring shaft, and when the screw rod penetrates through a screw hole in the surface of a workpiece, the hook rod can be retracted into the opening groove through rotating connection between the hook rod and the torsional spring shaft; after the screw rod penetrates through the screw hole in the surface of the workpiece, the hook rod can be reset and rebounded to be expanded again, then the hook rod is expanded on the other face of the workpiece, and double-face fixing of the workpiece is achieved in cooperation with a thread structure between the screw rod and the large nut.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a double-sided fixed fastener. Background Art

[0002] Screws are one type of fasteners. They are tools that use the physics and mathematical principles of the circular rotation of an object's inclined surface and friction to gradually tighten objects and mechanical parts. Screws are indispensable industrial necessities in daily life: such as very small screws used in cameras, glasses, clocks, electronics, etc.; general screws for televisions, electrical products, musical instruments, furniture, etc.; large screws and nuts are used in engineering, construction, and bridges; and both large and small screws are used in transportation equipment, airplanes, trams, and cars.

[0003] When fastening a workpiece, existing fasteners only achieve single-sided fastening, which is not conducive to double-sided fastening of the workpiece. When achieving double-sided fastening, two fasteners are required, which increases the number of fasteners used and makes the fasteners less functional.

[0004] Therefore, those skilled in the art provide a double-sided fastener to solve the problems raised in the above background technology. Utility Model Content

[0005] The utility model aims to provide a double-sided fixing fastener to solve the problem that the existing fasteners mentioned in the above background technology are not conducive to achieving double-sided fixing.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A double-sided fixed fastener comprises: a screw rod, a large nut is sleeved on the outer side of the screw rod, an open groove is provided on the surface of the screw rod, and a hook rod is movably connected inside the open groove, a movable torsion spring shaft is provided between one end of the hook rod and the inside of the open groove, a gasket is movably sleeved on the outer side of the open groove, and anti-slip rubber pads are fixedly bonded to the upper and lower surfaces of the gasket.

[0008] As a further solution of the present invention, the screw rod and the large nut cooperate with each other to form a threaded connection.

[0009] As a further solution of the present invention, the hook rod forms a rotating structure through the torsion spring shaft and the open slot, and the open slot and the hook rod inside the open slot are both bilaterally symmetrical about the symmetry center line of the screw rod.

[0010] As a further solution of the utility model, a sleeve is fixedly engaged and installed inside the lower part of the hook rod, and the surface of the sleeve is provided with perforations.

[0011] As a further solution of the utility model, a first threaded rod is inserted into the interior of the sleeve, and a second threaded rod is inserted into the interior of the through hole.

[0012] As a further solution in the utility model, a hole is fixedly opened on the surface of the threaded rod one, and the threaded rod one is connected to the threaded rod two through the hole, and small nuts are installed at both ends of the threaded rod one and the threaded rod two.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] An open groove is provided on the surface of the screw, and the interior of the open groove is connected to a hook rod through a torsion spring shaft. The hook rod forms an elastic rotation structure with the torsion spring shaft and the screw. When the screw passes through the screw hole on the surface of the workpiece, the hook rod can be retracted into the interior of the open groove by utilizing the rotation connection between the hook rod and the torsion spring shaft. After the screw passes through the screw hole on the surface of the workpiece, the hook rod will reset and rebound to reopen, and then unfold on the other side of the workpiece, cooperating with the threaded structure between the screw and the large nut to achieve double-sided fixation of the workpiece. In this way, the multiple use of the fastener is reduced and the use function of the fastener is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a schematic diagram of the structure of a double-sided fixed fastener.

[0016] Figure 2 The present invention is a schematic diagram of the cross-sectional structure of a double-sided fixed fastener.

[0017] Figure 3 The figure is a schematic diagram of the structure of a screw in a double-sided fixed fastener.

[0018] Figure 4 The invention is a schematic structural diagram of a threaded through rod 1 and a threaded through rod 2 in a double-sided fixed fastener.

[0019] Figure 5 The present invention is a schematic diagram of the split structure of a threaded rod and a sleeve in a double-sided fixed fastener.

[0020] In the figure: 1. screw rod; 2. large nut; 3. open slot; 4. gasket; 5. anti-slip rubber pad; 6. hook rod; 7. torsion spring shaft; 8. sleeve; 9. through hole; 10. threaded rod 1; 11. small nut; 12. threaded rod 2; 13. hole. 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] See also Figure 1 to Figure 5 The embodiment of the utility model provides a double-sided fixed fastener, comprising: a screw rod 1, a large nut 2 is sleeved on the outer side of the screw rod 1, an open groove 3 is provided on the surface of the screw rod 1, and a hook rod 6 is movably connected inside the open groove 3, a torsion spring shaft 7 for movement is provided between one end of the hook rod 6 and the inside of the open groove 3, a gasket 4 is movably sleeved on the outer side of the open groove 3, and anti-slip rubber pads 5 are fixedly bonded to the upper and lower surfaces of the gasket 4.

[0023] The screw rod 1 and the large nut 2 cooperate with each other to form a threaded connection, and the hook rod 6 forms a rotating structure with the open slot 3 through the torsion spring shaft 7, and the open slot 3 and the hook rod 6 inside the open slot 3 are both bilaterally symmetrical about the symmetry center line of the screw rod 1;

[0024] Specifically, by setting the screw 1 and the large nut 2, and utilizing the threaded connection between the large nut 2 and the screw 1, the workpiece can be fastened on one side. An open groove 3 is provided on the surface of the screw 1, and a hook rod 6 is installed inside the open groove 3. The hook rod 6 forms a movable connection with the screw 1 by utilizing the torsion spring shaft 7. The hook rod 6 cooperates with the screw 1 to pass through the screw hole on the surface of the workpiece to fasten the other side of the workpiece, and cooperates with the large nut 2 to achieve double-sided fixation of the workpiece.

[0025] A sleeve 8 is fixedly fitted inside the lower part of the hook rod 6, and a through hole 9 is provided on the surface of the sleeve 8, a threaded rod 10 is inserted inside the sleeve 8, a threaded rod 2 12 is inserted inside the through hole 9, a hole 13 is fixedly opened on the surface of the threaded rod 10, and the threaded rod 10 is connected to the threaded rod 2 12 through the hole 13, and small nuts 11 are installed at both ends of the threaded rod 10 and the threaded rod 2 12;

[0026] Specifically, the sleeve 8 is fixed inside the screw 1, and the threaded rod 10 and the threaded rod 2 12 are cross-inserted on the screw 1 through the sleeve 8 to lock the hook rod 6 and strengthen the fastening effect on the other side of the workpiece. A through hole 9 is set on the surface of the threaded rod 10 to facilitate the threaded rod 2 12 and the threaded rod 10 to cross each other and be connected in a cross shape.

[0027] The working principle of the utility model is as follows: when using the utility model, the gasket 4 is placed on the outside of the screw hole on the reverse side of the workpiece, and then the screw rod 1 is inserted into the surface screw hole of the workpiece from the front side. The hook rod 6 and the torsion spring shaft 7 cooperate with each other. When the screw rod 1 passes through the screw hole on the surface of the workpiece, the hook rod 6 will be retracted into the inside of the open groove 3 until the matching screw rod 1 passes through the screw hole. When the top end of the hook rod 6 passes through the screw hole with the screw rod 1, the hook rod 6 is reset and rebounded to open outward with the cooperation of the torsion spring shaft 7, and then blocks the back side of the workpiece, and pulls the screw rod 1 back in the reverse direction, so that the hook rod 6 can be tightly hooked on the workpiece. After the back of the workpiece is tightened, a large nut 2 is used to tighten it from the front of the workpiece, thereby achieving double-sided fixation of the workpiece. Secondly, the threaded rod 10 is passed through the sleeve 8 inside the screw rod 1 from front to back, and then the threaded rod 2 12 is inserted from the side, passes through the through hole 9, and passes through the hole 13 on the surface of the threaded rod 10, so that the threaded rod 2 12 and the threaded rod 10 are crossed and connected to each other in a cross shape, and then the small nut 11 is used to lock the threaded rod 10 and the threaded rod 2 12 to perform a cross-shaped insertion, lock the hook rod 6, and strengthen the fastening effect on the other side of the workpiece.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A double-sided fastener, characterized in that: include: A screw rod (1), the outer side of the screw rod (1) is sleeved with a large nut (2), the surface of the screw rod (1) is provided with an open groove (3), and the inside of the open groove (3) is movably connected with a hook rod (6), a movable torsion spring shaft (7) is provided between one end of the hook rod (6) and the inside of the open groove (3), a gasket (4) is movably sleeved on the outer side of the open groove (3), and anti-slip rubber pads (5) are fixedly bonded to the upper and lower surfaces of the gasket (4).

2. A double-sided fastener according to claim 1, characterized in that: The screw rod (1) and the large nut (2) cooperate with each other to form a threaded connection.

3. A double-sided fastener according to claim 1, characterized in that: The hook rod (6) forms a rotating structure with the opening groove (3) through the torsion spring shaft (7), and the opening groove (3) and the hook rod (6) inside the opening groove (3) are both bilaterally symmetrical about the symmetry center line of the screw rod (1).

4. A double-sided fastener according to claim 1, characterized in that: A sleeve (8) is fixedly engaged and installed inside the lower part of the hook rod (6), and a through hole (9) is arranged on the surface of the sleeve (8).

5. A double-sided fastener according to claim 4, characterized in that: A first threaded rod (10) is inserted into the interior of the sleeve (8), and a second threaded rod (12) is inserted into the interior of the through hole (9).

6. A double-sided fastener according to claim 5, characterized in that: A hole (13) is fixedly opened on the surface of the threaded rod 1 (10), and the threaded rod 1 (10) is connected to the threaded rod 2 (12) through the hole (13), and small nuts (11) are installed at both ends of the threaded rod 1 (10) and the threaded rod 2 (12).

Images