Fastener capable of being operated on one side

Abstract

The utility model discloses a unilateral operation fastener which comprises an opposite-pull rod and an opposite-pull nut, the opposite-pull rod is of a cylindrical structure with a screw rod at one end, the cylindrical structure of the opposite-pull rod is coaxial with the screw rod, the opposite-pull nut is fastened on the screw rod through the free end of the screw rod, and the free end of the opposite-pull rod is provided with an overturning block which overturns under the influence of gravity. The rotating shaft of the overturning block is perpendicular to and intersects with the axis of the opposite-pull rod, and the gravity center of the overturning block is not collinear with the rotating shaft of the overturning block. According to the device, a single-side eccentric gravity overturning structure is adopted, the opposite-pull rod directly overturns according to the self weight after penetrating through a hole in a wall body, single-side automatic opposite-pull is achieved, all installation operations can be completed on one side through the fastener, and in the environment where high-altitude operation is needed, repeated high-altitude operation is avoided, and meanwhile the installation efficiency is improved. Automatic eccentric opposite pulling can be directly carried out in the stone veneer; the device adopts an integrated structure to meet the high-strength use requirements of passing through floors or elevator shafts and the like.

Description

Technical Field

[0001] The utility model relates to the field of fasteners, in particular to a single-side operation fastener. Background Art

[0002] When the distribution box is built on the secondary masonry wall, it needs to be installed and stressed by tension anchor bolts. In actual use, there may be other construction requirements on the wall opposite to the distribution box installation. When using conventional tension anchor bolts, such as hanging stone veneer on the wall, the project needs to be delayed, which leads to an extension of the construction period. At the same time, during the secondary masonry, due to the need to use buried plates, when used at a higher position, the installation of tension bolts requires high-altitude work on both sides of the wall, which undoubtedly increases the workload and repeated high-altitude work will also increase the possibility of accidents.

[0003] In the use scenario of passing through floors, scaffolding is often needed. Scaffolding is a working platform set up to ensure the smooth progress of each construction process. In order to avoid overturning accidents caused by scaffolding being set up too high, wall connecting pieces are often used to tie the scaffolding to the main structure to ensure the safety of scaffolding. This means that on the basis of solving the operation problem, the fasteners need to maintain a certain installation strength.

[0004] Therefore, a single-side operating fastener is now needed to solve the above problems. Utility Model Content

[0005] The utility model is to solve the problem in the prior art that a distribution box needs to be installed and stressed by tension anchor bolts when it is built on a secondary masonry wall. In actual use, there may be other construction requirements on the wall opposite to the installation of the distribution box. When using conventional tension anchor bolts, for example, projects such as hanging stone veneers on the wall need to be delayed. At the same time, in the use scenario of passing through floors, scaffolding is often required. The scaffolding is a working platform erected to ensure the smooth progress of each construction process. In order to avoid overturning accidents caused by excessive scaffolding, wall connecting parts are often used to tie the scaffolding to the main structure to ensure the safety of the scaffolding. This results in the problem that the fastener needs to maintain a certain installation strength on the basis of solving the operation problem. A single-sided operating fastener is provided, which realizes single-sided automatic tensioning based on gravity flipping, thereby solving the above-mentioned problem.

[0006] The utility model provides a single-side operation fastener, including a tie rod and a tie nut, the tie rod is a cylindrical structure with a screw at one end, the cylindrical structure of the tie rod is coaxial with the screw, the cylindrical structure of the tie rod and the screw structure are an integrally formed structure, the tie nut is fastened to the screw through the free end of the screw, the free end of the tie rod is provided with a flip block that flips under the influence of gravity, the rotational freedom of the flip block is 360 degrees around the rotation axis, the rotation axis of the flip block is perpendicular to and intersects the axis of the tie rod, the center of gravity of the flip block is not colinear with the rotation axis of the flip block, the maximum diameter of the flip block is greater than the diameter of the cylindrical structure of the tie rod, the minimum diameter of the flip block is less than or equal to the diameter of the cylindrical structure of the tie rod, and the thickness of the flip block is greater than or equal to one third of the diameter of the cylindrical structure of the tie rod.

[0007] The utility model describes a single-sided operating fastener, as a preferred embodiment, the tension rod includes a flip block, a structural rod, an externally threaded rod, a receiving groove and a flip axis, the structural rod is a cylindrical rod body, an externally threaded rod is arranged along the axis line at one end of the structural rod, the externally threaded rod is coaxial with the structural rod, the diameter of the structural rod is larger than the diameter of the externally threaded rod, the receiving groove is a through groove, which is arranged at the other end of the structural rod, the flip axis is arranged in the middle of the receiving groove perpendicular to the direction of the receiving groove, the flip block is a strip-shaped block, the flip block is arranged between the receiving grooves through the flip axis, the length from the farthest edge of the flip block to the axis of the flip axis is less than or equal to the depth of the receiving groove and greater than or equal to the radius of the structural rod, and the center of the flip block is not colinear with the rotation center of the flip block.

[0008] The one-side operation fastener described in the utility model is preferably provided with sliding friction pairs on the two lengthwise side edges of the flip block.

[0009] The utility model discloses a single-side operation fastener, as a preferred embodiment, the flip block is an axisymmetric block, and the flip axis connecting the flip block position is not colinear with the flip block center.

[0010] In the one-side operation fastener described in the utility model, as a preferred embodiment, the length of the structural rod is greater than the length of the external thread rod.

[0011] The beneficial effects of the utility model are as follows:

[0012] This device adopts a single-sided eccentric gravity flipping structure, so that the tension rod can be directly flipped according to its own weight after passing through the hole in the wall, realizing single-sided automatic tensioning. This allows the fastener to complete all installation operations on one side. In an environment where high-altitude operations are required, it can avoid repeated high-altitude operations while automatically eccentrically pulling directly inside the stone veneer, avoiding the problem of using traditional tension bolts and having to wait until the actual installation period has passed before installing the stone veneer. This device adopts an integrated structure to meet high-intensity use requirements such as passing through floors or elevator shafts. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1A schematic diagram of the use position of a single-side operating fastener;

[0014] Figure 2 A schematic diagram of a tie rod used for a single-side operating fastener.

[0015] Reference numerals:

[0016] 1. Tension rod; 11. Flip block; 12. Structural rod; 13. Externally threaded rod; 14. Accommodating groove; 15. Flip shaft; 2. Tension nut. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] Example 1

[0019] like Figure 1 As shown, a single-side operating fastener includes a tie rod 1 and a tie nut 2. The tie rod 1 is a cylindrical structure with a screw at one end. The cylindrical structure of the tie rod 1 is coaxial with the screw. The cylindrical structure of the tie rod 1 and the screw structure are an integrally formed structure. The tie nut 2 is fastened to the screw through the free end of the screw. The free end of the tie rod 1 is provided with a flip block that flips under the influence of gravity. The rotational freedom of the flip block is 360 degrees around the rotation axis. The rotation axis of the flip block is perpendicular to and intersects the axis of the tie rod 1. The center of gravity of the flip block is not colinear with the rotation axis of the flip block. The maximum diameter of the flip block is greater than the diameter of the cylindrical structure of the tie rod 1, the minimum diameter of the flip block is less than or equal to the diameter of the cylindrical structure of the tie rod 1, and the thickness of the flip block is greater than or equal to one third of the diameter of the cylindrical structure of the tie rod 1.

[0020] like Figure 2 As shown, the tension rod 1 includes a flip block 11, a structural rod 12, an externally threaded rod 13, a receiving groove 14 and a flip axis 15. The structural rod 12 is a cylindrical rod body. The externally threaded rod 13 is arranged along the axis at one end of the structural rod 12. The externally threaded rod 13 is coaxial with the structural rod 12. The diameter of the structural rod 12 is larger than the diameter of the externally threaded rod 13. The receiving groove 14 is a through groove, which is arranged at the other end of the structural rod 12. The flip axis 15 is arranged in the middle of the receiving groove 14 perpendicular to the direction of the receiving groove 14. The flip block 11 is a strip-shaped block. The flip block 11 is arranged between the receiving grooves 14 through the flip axis 15. The length from the farthest edge of the flip block 11 to the axis of the flip axis 15 is less than or equal to the depth of the receiving groove 14 and greater than or equal to the radius of the structural rod 12. The center of the flip block 11 is not colinear with the rotation center of the flip block 11.

[0021] Sliding friction pairs are arranged on the two longitudinal sides of the flip block 11. The flip block 11 is an axisymmetric block, and the flip axis 15 connecting the flip block 11 is not collinear with the center of the flip block 11.

[0022] The length of the structural rod 12 is greater than the length of the external threaded rod 13 .

[0023] 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 single-side operating fastener, characterized in that: It comprises a tension rod (1) and a tension nut (2), wherein the tension rod (1) is a cylindrical structure with a screw at one end, the cylindrical structure of the tension rod (1) is coaxial with the screw, the cylindrical structure of the tension rod (1) and the screw structure are an integrally formed structure, the tension nut (2) is fastened to the screw through the free end of the screw, the free end of the tension rod (1) is provided with a flip block that flips under the influence of gravity, the rotational freedom of the flip block is 360 degrees around the rotation axis, the rotation axis of the flip block is perpendicular to and intersects the axis of the tension rod (1), the center of gravity of the flip block is not colinear with the rotation axis of the flip block, the maximum diameter of the flip block is greater than the diameter of the cylindrical structure of the tension rod (1), the minimum diameter of the flip block is less than or equal to the diameter of the cylindrical structure of the tension rod (1), and the thickness of the flip block is greater than or equal to one third of the diameter of the cylindrical structure of the tension rod (1).

2. A one-side operation fastener according to claim 1, characterized in that: The tension rod (1) comprises a flip block (11), a structural rod (12), an externally threaded rod (13), a receiving groove (14) and a flip shaft (15); the structural rod (12) is a cylindrical rod body; one end of the structural rod (12) is provided with the externally threaded rod (13) along the axis; the externally threaded rod (13) is coaxial with the structural rod (12); the diameter of the structural rod (12) is larger than the diameter of the externally threaded rod (13); the receiving groove (14) is a through groove, which is provided at the other end of the structural rod (12); The flip axis (15) is arranged in the middle of the receiving groove (14) perpendicular to the direction of the receiving groove (14); the flip block (11) is a strip-shaped block; the flip block (11) is arranged between the receiving grooves (14) through the flip axis (15); the length from the farthest edge of the flip block (11) to the axis of the flip axis (15) is less than or equal to the depth of the receiving groove (14) and greater than or equal to the radius of the structural rod (12); the center of the flip block (11) is not colinear with the rotation center of the flip block (11).

3. A one-side operation fastener according to claim 2, characterized in that: Sliding friction pairs are arranged on the two lengthwise side edges of the turning block (11).

4. A one-side operation fastener according to claim 2, characterized in that: The flip block (11) is an axisymmetric block, and the flip axis (15) connecting the flip block (11) is not collinear with the center of the flip block (11).

5. A one-side operation fastener according to claim 2, characterized in that: The length of the structural rod (12) is greater than the length of the externally threaded rod (13).

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