Anti-rotation structure of strap stopping shaft of binding device

Abstract

The utility model provides an anti-rotation structure of a strap stopping shaft of a binding device, and belongs to the technical field of binding devices. The problem that an existing binding device is insufficient in stability is solved. The binding device comprises a wrench, two connecting holes are formed in the wrench, a belt stopping shaft penetrates through the wrench, the two ends of the belt stopping shaft penetrate through the two connecting holes respectively, and an anti-rotation structure comprises at least one limiting step located at one end of the belt stopping shaft and at least one limiting face on the hole wall of one connecting hole. The limiting face abuts against the step face of the limiting step so that the belt stopping shaft and the wrench can be positioned in the circumferential direction, and the two ends of the belt stopping shaft protrude and deform towards the periphery through external force so that the belt stopping shaft and the wrench can be positioned in the axial direction. The anti-rotation structure of the strap stopping shaft of the binding device has the advantages of preventing the strap stopping shaft from rotating and improving the stability of the binding device.

Description

Technical Field

[0001] The utility model belongs to the technical field of binding devices and relates to an anti-rotation structure of a belt-stop shaft of a binding device. Background Art

[0002] A tie-down usually refers to a tool or device specifically used to tie and secure cargo quickly and conveniently, and is often used to secure cargo on transportation vehicles such as cars, trains, and ships.

[0003] Existing binders, for example, a binder disclosed in Chinese patent literature [patent number: 201120236209.X; application publication number: CN202201183U], the binder includes a handle, a bracket, a hook one, a binding belt and a hook two, one end of the bracket is hinged on the handle, the other end of the bracket is connected to the hook one, the hook two is connected to the end of the binding belt, the binding belt is connected to the handle, the handle is provided with a stopper which can prevent the binding belt from continuing to move after contacting the binding belt, the handle is provided with a protruding stopper, the stopper is located in the middle and upper part of the line connecting the stopper and the hinge, when the binder is in the binding state, the binding belt is wrapped around the stopper and the stopper is pressed against the upper part of the bracket, and when the bracket passes over the stopper, the binding belt is separated from the stopper.

[0004] In the binder of this structure, the stopper is cylindrical, and the two ends of the stopper are respectively fixedly connected to the two inner sides of the connecting frame, that is, the stopper is fixedly connected to the connecting frame in a tightly fitting manner. With this type of fixing method, the stopper may rotate after being used for a period of time, causing the binding belt to loosen, thereby reducing the stability of the binder. Summary of the invention

[0005] The purpose of the utility model is to solve the above problems existing in the prior art and to propose an anti-rotation structure for the stop belt shaft of a binder, so as to solve the technical problem of how to prevent the stop belt shaft from rotating and improve the stability of the binder.

[0006] The purpose of the utility model can be achieved through the following technical solutions: an anti-rotation structure of a stop belt shaft of a binder, the binder includes a wrench, the wrench has two connecting holes, the stop belt shaft is inserted into the wrench, and is characterized in that the two ends of the stop belt shaft respectively pass through the two connecting holes, the anti-rotation structure includes at least one limiting step located at one end of the stop belt shaft and at least one limiting surface on the wall of one of the connecting holes, the limiting surface abuts against the step surface of the limiting step to circumferentially position the stop belt shaft and the wrench, and the two ends of the stop belt shaft are deformed to bulge outwards through external force to axially position the stop belt shaft and the wrench.

[0007] The step surface of the limiting step and the limiting surface on the wall of the connecting hole are mutually engaged, so that the stop belt shaft and the wrench are positioned circumferentially, so that the stop belt shaft will not rotate, so that the binding belt will not be loose. The two ends of the stop belt shaft pass through the two connecting holes respectively, that is, the two end parts of the stop belt shaft are located outside the two sides of the wrench. The two ends of the stop belt shaft are applied with external force through the riveting equipment, so that the two ends of the stop belt shaft are convex and deformed in all directions, so that the outer diameter of the two ends of the stop belt shaft is larger than the hole diameter of the connecting hole, so that the stop belt shaft and the wrench are axially positioned, so that the stop belt shaft will not fall off. The anti-rotation structure positions the stop belt shaft and the wrench circumferentially and axially, so that the stop belt shaft will not rotate or fall off, thereby improving the stability of the binder.

[0008] In the anti-rotation structure of the stop belt shaft of the above-mentioned binder, the limit surface is planar, the step surface is planar, and the limit surface and the step surface fit together. The planar shape is convenient for processing, and the fitting accuracy of the limit surface and the step surface can be improved, thereby preventing the stop belt shaft from rotating and improving the stability of the binder.

[0009] In the above-mentioned anti-rotation structure of the stopper shaft of the binding device, the limit step includes a supporting surface perpendicular to the step surface, and the supporting surface is against the inner side wall of the wrench. During installation, the stopper shaft extends into the wrench from the other connecting hole until the end of the stopper shaft with the limit step passes through one of the connecting holes, and the supporting surface is against the inner side wall of the wrench, indicating that the stopper shaft is installed in place, making the installation of the stopper shaft convenient.

[0010] In the above-mentioned anti-rotation structure of the stop belt shaft of the binding device, the stop belt shaft is cylindrical, and the limiting step is formed by turning the end of the stop belt shaft. This structure makes the stop belt shaft easy to process.

[0011] In the above-mentioned anti-rotation structure of the stop belt shaft of the binding device, the end faces of both ends of the stop belt shaft have annular force-applying grooves, and the force-applying grooves are located at the circumferential edge of the stop belt shaft. The force-applying grooves can be present from the beginning, and the riveting device abuts against the force-applying grooves to deform the two ends of the stop belt shaft, so that the stop belt shaft and the wrench are riveted; the force-applying grooves can also be generated when the riveting device applies external force to deform the two ends of the stop belt shaft.

[0012] In the above anti-rotation structure of the stopper shaft of the binder, the number of the limit steps is two, and the two step surfaces are arranged in parallel. This structure enables a good effect of circumferential positioning of the stopper shaft and the wrench, and improves the stability of the binder.

[0013] As another case, in the anti-rotation structure of the stopper shaft of the above-mentioned binder, when the number of the limit steps is greater than or equal to three, all the step surfaces are arranged in a regular polygon. This structure makes the stopper shaft and the wrench have a good circumferential positioning effect, and improves the stability of the binder.

[0014] In the above anti-rotation structure of the stopper shaft of the binder, the outer peripheral wall of the stopper shaft has anti-skid knurling. The anti-skid knurling contacts the binding belt to increase friction, prevent the binding belt from rotating, and improve the stability of the binder.

[0015] Compared with the prior art, the anti-rotation structure of the strap stop shaft of the binding device provided by the utility model has the following advantages:

[0016] 1. The anti-rotation structure engages the step surface of the limiting step with the limiting surface on the wall of the connecting hole to position the stop belt shaft and the wrench circumferentially. External force is applied to both ends of the stop belt shaft through riveting equipment to cause the two ends of the stop belt shaft to bulge out and deform in all directions, so that the stop belt shaft and the wrench are axially positioned, and the stop belt shaft will not rotate or fall off, thereby improving the stability of the binder.

[0017] 2. The step surface of the anti-rotation structure can be one or more. By properly arranging the positions of the step surfaces, the circumferential positioning effect of the stopper shaft and the wrench is improved to prevent the stopper shaft from rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of this bundler.

[0019] Figure 2 This is an exploded view of the tie-down wrench and the stopper shaft.

[0020] Figure 3 It is a cross-sectional view of the tie-down wrench and the stopper shaft.

[0021] Figure 4 It is a structural schematic diagram of the stopper shaft of the binding device having two limit steps.

[0022] Figure 5 It is a structural schematic diagram of the stopper shaft of the binding device having three limit steps.

[0023] Figure 6 It is a structural schematic diagram of the stopper shaft of the binder having four limit steps.

[0024] Figure 7 It is a structural schematic diagram of the stopper shaft of the binding device having five limit steps.

[0025] Figure 8 It is a structural schematic diagram of the stopper shaft of the binding device having six limit steps.

[0026] In the figure, 1, wrench; 2, connecting hole; 3, stopper shaft; 4, limiting step; 41, step surface; 42, abutting surface; 5, limiting surface; 6, force groove; 7, anti-slip knurling. DETAILED DESCRIPTION

[0027] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0028] like Figure 1 As shown, the binder includes a wrench 1 and a stopper shaft 3, and the anti-rotation structure of the stopper shaft 3 of the binder includes a limiting step 4 and a limiting surface 5.

[0029] like Figure 2 , Figure 3 As shown, the wrench 1 has two connecting holes 2, the stop shaft 3 is cylindrical, the outer peripheral wall of the stop shaft 3 has anti-slip knurling 7, the end of one end of the stop shaft 3 is machined into a limiting step 4 by turning, the stop shaft 3 is inserted into the wrench 1, and the two ends of the stop shaft 3 pass through the two connecting holes 2 respectively.

[0030] In this embodiment, one end of the stop belt shaft 3 has a limiting step 4, and a hole wall of one of the connecting holes 2 has a limiting surface 5, the limiting step 4 includes a step surface 41 and abutting surface 42, the step surface 41 and the abutting surface 42 are perpendicular to each other, the limiting surface 5, the step surface 41 and the abutting surface 42 are all planar, the limiting surface 5 and the step surface 41 are in contact, and the abutting surface 42 abuts against the inner side wall of the wrench 1, so that the stop belt shaft 3 and the wrench 1 are circumferentially positioned. In actual production, Figure 4 As shown, the number of the limiting steps 4 can be two, and the two step surfaces 41 are arranged in parallel. When the number of the limiting steps 4 is greater than or equal to three, all the step surfaces 41 are arranged in a regular polygonal shape, such as Figure 5 As shown, it is an equilateral triangle, such as Figure 6 As shown, it is a square, such as Figure 7 As shown, it is a regular pentagon, such as Figure 8 As shown, it is a regular hexagon.

[0031] During installation, the stop belt shaft 3 is inserted into the wrench 1 from another connection hole 2, and the end of the stop belt shaft 3 with the limiting step 4 passes through one of the connection holes 2 until the abutting surface 42 abuts against the inner wall of the wrench 1, at which time the limiting surface 5 and the step surface 41 are in contact. Then, external force is applied to both ends of the stop belt shaft 3 through a riveting device, and the two ends of the stop belt shaft 3 are deformed to bulge outwards through the external force, so that the stop belt shaft 3 and the wrench 1 are axially positioned. In this process, an annular force application groove 6 is generated on the end faces of both ends of the stop belt shaft 3, and the force application groove 6 is located at the circumferential edge of the stop belt shaft 3.

[0032] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0033] Although the present invention uses more terms such as wrench 1, connecting hole 2, stopper shaft 3, limiting step 4, step surface 41, abutting surface 42, limiting surface 5, force application groove 6, anti-slip knurling 7, etc., it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. An anti-rotation structure of a stopper shaft of a binding device, the binding device comprising a wrench (1), the wrench (1) having two connecting holes (2), the stopper shaft (3) passing through the wrench (1), It is characterized in that The two ends of the stop belt shaft (3) pass through the two connecting holes (2) respectively, and the anti-rotation structure comprises at least one limiting step (4) located at one end of the stop belt shaft (3) and at least one limiting surface (5) on the hole wall of one of the connecting holes (2); the limiting surface (5) abuts against the step surface (41) of the limiting step (4) to position the stop belt shaft (3) and the wrench (1) circumferentially, and the two ends of the stop belt shaft (3) are deformed to protrude in all directions by external force to position the stop belt shaft (3) and the wrench (1) axially.

2. The anti-rotation structure of the strap stop shaft of the binding device according to claim 1, It is characterized in that The limiting surface (5) is planar, the step surface (41) is planar, and the limiting surface (5) and the step surface (41) are in contact with each other.

3. The anti-rotation structure of the strap stop shaft of the binding device according to claim 1, It is characterized in that The limiting step (4) comprises a supporting surface (42) perpendicular to the step surface (41), and the supporting surface (42) is supported on the inner side wall of the wrench (1).

4. The anti-rotation structure of the strap stop shaft of a binding device according to claim 1, 2 or 3, It is characterized in that The stop belt shaft (3) is cylindrical, and the limiting step (4) is formed by turning the end of the stop belt shaft (3).

5. The anti-rotation structure of the strap stop shaft of a binding device according to claim 1, 2 or 3, It is characterized in that The end surfaces at both ends of the stop belt shaft (3) are provided with an annular force application groove (6), and the force application groove (6) is located at the circumferential edge of the stop belt shaft (3).

6. The anti-rotation structure of the strap stop shaft of a binding device according to claim 1, 2 or 3, It is characterized in that The number of the limiting steps (4) is two, and the two step surfaces (41) are arranged in parallel.

7. The anti-rotation structure of the strap stop shaft of a binding device according to claim 1, 2 or 3, It is characterized in that When the number of the limiting steps (4) is greater than or equal to three, all the step surfaces (41) are arranged in the form of regular polygons.

8. The anti-rotation structure of the strap stop shaft of a binding device according to claim 1, 2 or 3, It is characterized in that The outer peripheral wall of the belt stop shaft (3) is provided with anti-skid knurling (7).

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