Buckle

Abstract

A belt buckle comprises a first locking element and a second locking element which are rotationally connected, the second end of the first locking element and the second end of the second locking element can be connected together and can be opened, a bandage is fixed through connection of the first locking element and the second locking element, the bandage can provide counter-acting force for the belt buckle, and after the belt buckle is connected, the belt buckle can be opened. The strap may impede opening of the first and second latching elements so that structural reliability may be enhanced. In addition, the binding belt is arranged in the belt buckle in a bent path mode, the anti-skid locking function is achieved, the reliability of the structure can be enhanced, and slipping is avoided. The belt buckle can be suitable for the non-elastic binding belt to be used and can be matched with different columnar objects to be installed, during installation, the binding belt can be tightened, the tighter the binding belt is, the larger the reaction effect on the belt buckle is, the more the connection firmness of the first locking element and the second locking element can be enhanced, and therefore the fixing performance of the binding belt is greatly improved, and the fixing effect of the binding belt is improved. And shaking and slipping are avoided. The device is novel in structure, practical in function and convenient to use.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of buckles, in particular to a belt buckle. BACKGROUND

[0002] In order to conveniently detachably fix an article on a rod, the prior art usually fixes the article by a elastic band structure (such as a silica gel elastic band). For example, in order to fix a magnetic buckle on a bicycle rod to adsorb a magnetic water bottle or a magnetic bicycle bag, the magnetic buckle is fixed on the bicycle rod by the elastic band. The elastic band has a certain elasticity and can be stretched, and usually has a plurality of hanging holes for adjustment. In use, the hooks on the article are hooked on different hanging holes to adapt to different application sites and are fixed.

[0003] The elastic band structure is widely used in daily life, such as bicycle lights, bicycle decorations, etc., which can usually be fixed by the elastic band.

[0004] For lighter articles, such as mini bicycle lights and small decorations, it is relatively convenient to fix them by the elastic band, and they are not easy to shake. However, for articles with a certain weight, such as bicycle bags and water bottles, they are easy to shake when fixed by the elastic band, and need to be further improved.

[0005] In addition to the elastic band, there is usually a non-elastic belt buckle which clamps and fixes the band by simple clamping pressure. This belt buckle is similar to the helmet buckle on a helmet. When the force is small, the belt buckle can fix the band, but when the force is large, the band will slip, i.e. the band can slide relative to the belt buckle, and the belt buckle loses the clamping and fixing effect on the band.

[0006] Therefore, in the prior art, there is a lack of a convenient and reliable band fixing structure. SUMMARY

[0007] The present application aims to solve the above problems and provides a belt buckle for fixing a band which is convenient to use and reliable to fix.

[0008] To solve the above problems, the present application provides a belt buckle, characterized in that it comprises:

[0009] a first locking element,

[0010] a second locking element capable of rotating relative to the first locking element about a first pivot axis,

[0011] a first end of the first locking element or the second locking element close to the first pivot axis is provided with a mounting portion for threading the band, and a second end of the first locking element and the second locking element away from the first pivot axis can be joined together and opened,

[0012] In use, the strap extending from the mounting portion can be threaded between the second ends of the first and second locking elements and looped around the column, and a portion of the strap can be secured between the second ends of the first and second locking elements by engagement of the first and second locking elements, and the strap can be loosened by opening of the first and second locking elements.

[0013] Further, the first and second locking elements are configured such that when the second ends of the first and second locking elements are engaged together, the strap can apply an action to the first end of the second locking element to hinder opening of the second locking element relative to the first locking element.

[0014] Further, the position of the first pivot axis is movable such that when the second locking element is rotated relative to the first locking element to be engaged, the first pivot axis moves towards the second end of the first locking element, and when the second end of the second locking element is engaged with the second end of the first locking element, the first pivot axis moves towards the first end of the first locking element.

[0015] Further, a travel hole is provided at the first end of the first locking element, and the first end of the second locking element is pivotally connected to the first locking element by a pivot portion movably provided in the travel hole; when the second locking element is rotated relative to the first locking element to be engaged, the pivot portion moves from a first position of the travel hole towards the second end of the first locking element to a second position of the travel hole; and when the second end of the second locking element is engaged with the second end of the first locking element, the action force applied by the strap to the first end of the second locking element drives the pivot portion to move from the second position of the travel hole towards the first position.

[0016] Further, the mounting portion is provided at the first end of the second locking element, a strap hole is provided on the mounting portion for the strap to pass through, and the pivot portion is protrudingly provided on the opposite outer walls of the mounting portion, and the central axis of the pivot portion is the first pivot axis.

[0017] Further, a protruding engagement hook portion is provided at the second end of the second locking element, and a recessed engagement groove is provided at the second end of the first locking element, and the engagement hook portion can be engaged with the engagement groove to engage the first and second locking elements together.

[0018] Further, a guide portion is arranged at the second end of the second locking element, and a matching portion corresponding to the guide portion is arranged at the second end of the first locking element, and the guide portion can slide along the matching portion to drive the first pivot axis L to move towards the direction of the second end of the first locking element.

[0019] Further, the guide portion is provided with a guide slope, and the distance between the starting end of the guide slope and the first pivot axis L is greater than the distance between the terminal end of the guide slope and the first pivot axis L; the starting end of the guide slope is the end that first acts on the matching portion during engagement, and is arranged at the end of the guide portion facing the first locking element; and the terminal end of the guide slope is the end that last acts on the matching portion during engagement.

[0020] Further, a matching portion is arranged at the second end of the second locking element, and the matching portion is connected with the terminal end of the guide portion, and when the terminal end of the guide portion slides through the matching portion, the matching portion can enter a state of cooperation with the matching portion.

[0021] Further, the first locking element comprises first arm portions arranged in parallel and spaced apart, and a first connecting portion connected between the first arm portions, and the stroke hole is arranged at the first end of the first arm portion away from the first connecting portion, and the engagement groove is arranged on the side of the first connecting portion away from the stroke hole and extends along the length direction of the first connecting portion. Further, the second end of the first arm portion protrudes from the first connecting portion towards the second locking element to form the matching portion.

[0022] Further, the second locking element comprises second arm portions arranged in parallel and spaced apart, and the mounting portion is connected between the first ends of the second arm portions, and the second connecting portion is connected between the second ends of the second arm portions, and the second arm portions are arranged inside the first arm portions, and the engagement hook portion is arranged on the second connecting portion and faces the mounting portion and protrudes from the surface of the second connecting portion.

[0023] Further, the guide portion protrudes outside both sides of the second arm portions.

[0024] The buckle of the present application can fix the bandage by the engagement of the first and second locking elements, and the bandage can provide a counterforce to the buckle. After the engagement of the buckle, the bandage can hinder the opening of the first and second locking elements, thereby enhancing the structural reliability and avoiding slippage. In addition, the bandage is arranged in a curved path in the buckle, which has an anti-skid locking effect and can also enhance the structural reliability and avoid slippage. The buckle of the present application can be used with inelastic bandages and can be fitted to different columns for installation. When installed, the bandage can not only be tightened, but also the tighter the bandage, the greater the counterforce acting on the buckle, which can enhance the engagement firmness of the first and second locking elements, thereby greatly improving the bandage fixing performance. The buckle of the present application has a novel structure, practical function, and convenient use, and has strong practicality and should be widely promoted. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic view of a buckle with a bandage installed.

[0026] Figure 2 is a schematic view of the use principle, which shows the state diagram when the bandage is not passed through the second end of the first and second locking elements, wherein, Figure 2 B is Figure 2 a sectional view of A.

[0027] Figure 3 is a schematic view of the use principle, which shows the state diagram when the bandage is passed through the second end of the first and second locking elements, wherein, Figure 3 B is Figure 3 a sectional view of A.

[0028] Figure 4 is a schematic view of the use principle, which shows the state diagram when the starting end of the guide part of the second locking element is in contact with the top part, at this time the pivot part is located in the first position state; wherein, Figure 4 B is Figure 4 a sectional view of A.

[0029] Figure 5 is a schematic view of the use principle, which shows the state diagram when the ending end of the guide part of the second locking element is in contact with the top part, at this time the pivot part is located in the second position state; wherein, Figure 5 B is Figure 5 a sectional view of A.

[0030] Figure 6 is a schematic view of the use principle, which shows the state diagram after the second locking element establishes engagement with the first locking element, wherein, Figure 6 B is Figure 6 a sectional view of A.

[0031] Figure 7 is a schematic view of a belt buckle with a strap installed.

[0032] Figure 8 is a schematic view of a belt buckle with a strap installed.

[0033] wherein, Figures 2 to 6 is a sequential process state diagram.

[0034] The accompanying drawings are referred to, in which:

[0035] Belt buckle;

[0036] First locking element 10: stroke hole 11, engagement groove 12, top matching part 13, first arm part 14, first connecting part 15, strap ramp 16;

[0037] Second locking element 20: pivot part 21, engagement hook part 22, guide part 23, guide slope 231, starting end 2311, end 2312, matching part 24, second arm part 25, second connecting part 26, first pivot axis L1;

[0038] Strap 30;

[0039] Mounting part 40: belt hole 41;

[0040] Cylinder 200;

[0041] Opening direction X.

[0042] It is to be understood that the drawings are not necessarily to scale, and that the various features are illustrated in a simplified manner for the purpose of illustrating the basic principles of the application. Specific design features (including, for example, specific dimensions, directions, positions, and shapes) disclosed in the application will be determined, in part, by the specific environment in which the application is applied and used.

[0043] In the drawings, like reference numerals refer to like parts throughout the various views of the drawings. DETAILED DESCRIPTION

[0044] Reference will now be made in detail to various embodiments of the application, examples of which are illustrated in the accompanying drawings and described below. While the application will be described in conjunction with the example embodiments, it will be understood that the application is not limited to these example embodiments. On the contrary, the application is intended to cover alternatives, modifications, equivalents, and other embodiments, which can be included within the spirit and scope of the application as defined by the appended claims.

[0045] As Figures 1 to 8 shown, the belt buckle of the present application includes a first locking element 10 and a second locking element 20.

[0046] The first locking element 10 and the second locking element 20 are movably connected, and the second locking element 20 can rotate relative to the first locking element 10 around the first pivot axis L1.

[0047] For the convenience of description, the end of the first locking element 10 and the second locking element 20 close to the first pivot axis L1 is referred to as the first end of the first locking element 10 and the first end of the second locking element 20, and the end away from the first pivot axis L1 is referred to as the second end of the first locking element 10 and the second end of the second locking element 20.

[0048] As shown in Figures 1 to 8 For the convenience of setting the strap 30, the mounting portion 40 for the strap 30 is arranged at the first end of the first locking element 10 or the second locking element 20. One end or at least a part of the strap 30 can be threaded on the mounting portion 40.

[0049] The second ends of the first locking element 10 and the second locking element 20 can be engaged together and opened. Wherein, engaged together means connected together without separation, forming a locking connection.

[0050] In use, the strap 30 extending from the mounting portion 40 can pass between the second ends of the first locking element 10 and the second locking element 20 and be arranged around the columnar object 200 in a loop shape with the buckle, and the part of the strap 30 can be fixed between the second ends of the first locking element 10 and the second locking element 20 by the engagement of the first locking element 10 and the second locking element 20, and the strap 30 can be loosened by the opening of the first locking element 10 and the second locking element 20.

[0051] Further, the strap 30 and the mounting portion 40 are fixedly connected, that is, the strap 30 cannot be adjusted or opened at the mounting portion 40, and is fixedly attached at the mounting portion 40. The other end of the strap 30 is a free end, and the free end of the strap 30 can pass through the second ends of the first locking element 10 and the second locking element 20, and when the second ends of the first locking element 10 and the second locking element 20 are engaged, a part of the strap 30 is clamped between the second ends of the first locking element 10 and the second locking element 20, so that the strap 30 and the buckle are collectively tightened on the columnar object 200, such as a bicycle rod. When it is needed to loosen the strap 30, the second ends of the first locking element 10 and the second locking element 20 are opened, and the strap 30 can be loosened.

[0052] Further, when the strap 30 extending from the mounting portion 40 passes between the second ends of the first locking element 10 and the second locking element 20, as Figure 6As shown in FIG. B, when the second ends of the first and second locking elements 10, 20 are engaged, the strap 30 is forced to follow a curved path. The curved path is similar to an S-shape, which can enhance the anti-slip locking performance and avoid the strap 30 from loosening and slipping, and improve the load capacity.

[0053] Further, as shown in FIG. A, the first and second locking elements 10, 20 are configured to be engaged by the strap 30 when the strap 30 is pulled through the first and second locking elements 10, 20. As shown in FIG. B, when the second ends of the first and second locking elements 10, 20 are engaged, the strap 30 is forced to follow a curved path. The curved path is similar to an S-shape, which can enhance the anti-slip locking performance and avoid the strap 30 from loosening and slipping, and improve the load capacity. Figure 6 As shown in FIG. B, when the strap 30 is pulled through the first and second locking elements 10, 20, the strap 30 first passes through the interior of the first locking element 10 and then passes between the second ends of the first and second locking elements 10, 20. Thus, when the second ends of the first and second locking elements 10, 20 are engaged, the strap 30 is forced to bend in a substantially opposite direction after passing out of the interior of the first locking element 10, so that the strap 30 also follows a curved path along the second end of the first locking element 10, which further enhances the anti-slip locking performance and avoids the strap 30 from loosening and slipping, and improves the reliability of the strap 30 fixation and the load capacity. The curved path is also similar to an S-shape.

[0054] Further, to enhance the reliability of the buckle fixation, as shown in FIG. A, the first and second locking elements 10, 20 are configured to be engaged by the strap 30 when the strap 30 is pulled through the first and second locking elements 10, 20. As shown in FIG. B, when the second ends of the first and second locking elements 10, 20 are engaged, the strap 30 is forced to follow a curved path. The curved path is similar to an S-shape, which can enhance the anti-slip locking performance and avoid the strap 30 from loosening and slipping, and improve the load capacity. Figure 6 As shown in FIG. B, when the second ends of the first and second locking elements 10, 20 are engaged, the strap 30 is forced to follow a curved path. The curved path is similar to an S-shape, which can enhance the anti-slip locking performance and avoid the strap 30 from loosening and slipping, and improve the load capacity.

[0055] Further, as shown in FIG. A, the first and second locking elements 10, 20 are configured to be engaged by the strap 30 when the strap 30 is pulled through the first and second locking elements 10, 20. As shown in FIG. B, when the second ends of the first and second locking elements 10, 20 are engaged, the strap 30 is forced to follow a curved path. The curved path is similar to an S-shape, which can enhance the anti-slip locking performance and avoid the strap 30 from loosening and slipping, and improve the load capacity. Figure 3A, 4A, 5A, 6A, to achieve the effect of applying force to hinder the opening of the first locking element 10 and the second locking element 20 by the strap 30, the position of the first pivot axis L1 is not constant, and the movement is arranged: the position will change during the engagement of the first locking element 10 and the second locking element 20.

[0056] During the process of rotating the second locking element 20 relative to the first locking element 10 to engage (before engagement), as shown in Figure 4 A to Figure 5 A, the first pivot axis L1 moves towards the second end of the first locking element 10 to facilitate the engagement of the second end of the first locking element 10 and the second end of the second locking element 20. As shown in 5A to Figure 6 A, when the second end of the first locking element 10 and the second end of the second locking element 20 are engaged, the strap 30 pulls the second locking element 20 in the opposite direction, so that the first pivot axis L1 moves towards the first end of the first locking element 10 (as shown in Figure 6 ), so that the second end of the first locking element 10 and the second end of the second locking element 20 are engaged more tightly, hindering the movement of the second locking element 20 in the opening direction X and hindering the opening.

[0057] Further, more specifically, the first end of the first locking element 10 is provided with a stroke hole 11. The first end of the second locking element 20 is rotatably connected to the first locking element 10 by the shaft part 21 movably arranged in the stroke hole 11. The stroke hole 11 is a strip-shaped hole with a length greater than the diameter of the shaft part 21, so that the shaft part 21 can move along the stroke hole 11.

[0058] When the second locking element 20 is rotated relative to the first locking element 10 to engage (as shown in the process of Figure 4 A to Figure 5 A), the shaft part 21 can move from the first position of the stroke hole 11 (as shown in Figure 4 ) to the second position of the stroke hole 11 (as shown in Figure 5 ) towards the second end of the first locking element 10. At this time, it is beneficial to the engagement of the second end of the second locking element 20 and the second end of the first locking element 10.

[0059] When the second end of the second locking element 20 and the second end of the first locking element 10 are engaged (as shown in Figure 6As shown in the figure, under the action of the strap 30, i.e. the force applied by the strap 30 to the first end of the second locking element 20, the pivot portion 21 moves from the second position of the stroke hole 11 to the first position direction M1, i.e. to the direction close to the first end of the first locking element 10. At this time, as viewed from the opening direction X, the second locking element 20 moves in the opposite direction of the opening direction X, so that the second end of the second locking element 20 can be more closely engaged with the second end of the first locking element 10, further hindering the opening of the second locking element 20 relative to the first locking element 10, thereby enhancing the reliability of the buckle fixing.

[0060] Further, the mounting portion 40 is provided at the first end of the second locking element 20, and a strap hole 41 is provided on the mounting portion 40 for the strap 30 to pass through. The strap 30 can pass through the strap hole 41 and then be fixed, thereby being mounted at the mounting portion 40. In this way, when the first locking element 10 and the second locking element 20 are engaged, the strap 30 can apply a force to the first end of the second locking element 20 to move the first pivot axis L1 to the direction close to the first end of the first locking element 10.

[0061] Further, the pivot portion 21 is protrudingly provided on the opposite outer wall of the mounting portion 40. The pivot portion 21 is in a cylindrical shape and is integrally formed with the mounting portion 40. The central axis of the pivot portion 21 is the first pivot axis L1.

[0062] Further, the first pivot axis L1 is consistent with the width extension direction of the strap 30.

[0063] Further, to engage the second end of the first locking element 10 and the second end of the second locking element 20 together, a protruding engagement hook portion 22 is provided at the second end of the second locking element 20, and a concave engagement groove 12 is provided at the second end of the first locking element 10. The engagement hook portion 22 can be engaged with the engagement groove 12 to engage the first locking element 10 and the second locking element 20 together.

[0064] The engagement groove 12 is formed by the concave surface, and the length extension direction thereof is parallel to the first pivot axis L1.

[0065] When the first locking element 10 and the second locking element 20 are engaged, as shown in the figure, the protruding direction of the engagement hook portion 22 is opposite to the opening direction X, and therefore the engagement hook portion 22 needs to move along the opening direction X to exit from the engagement groove 12 and disengage. Figure 6

[0066] ​Further, in order to enable the engaging hook 22 to enter into the engaging groove 12 for engagement, a guide portion 23 is arranged at the second end of the second locking element 20, and a corresponding top portion 13 is arranged at the second end of the first locking element 10. The guide portion 23 can slide along the top portion 13 to enable the first pivot axis L1 to move towards the second end of the first locking element 10 (as shown in the process of Figure 4 , Figure 5 ).

[0067] Further, the guide portion 23 is provided with a guide slope 231 for acting with the top portion 13. The distance between the starting end 2311 of the guide slope 231 and the first pivot axis L1 (i.e. the pivot portion 21) is greater than the distance between the ending end 2312 of the guide slope 231 and the first pivot axis L1. In this way, when the guide slope 231 slides along the top portion 13, the first pivot axis L1 can move towards the second end of the first locking element 10.

[0068] The starting end 2311 of the guide slope 231 is the end that first acts with the top portion 13 during the engagement process, and is arranged at the end of the guide portion 23 that faces the first locking element 10.

[0069] The ending end 2312 of the guide slope 231 is the end that last acts with the top portion 13 during the engagement process.

[0070] When it is necessary to fix the free end of the strap 30, the second end of the second locking element 20 is rotated (as shown in the process of Figures 3 to 4 , to a certain extent (as shown in the process of Figure 4 , the starting end 2311 of the guide slope 231 contacts the top portion 13, at this time, the first pivot axis L1 is located at the position close to the first end of the first locking element 10, i.e. the pivot portion 21 is at the first position. Continue to apply force to the second end of the second locking element 20 to rotate (as shown in the process of Figures 4 to 5 , at this time, the guide slope 231 slides along the top portion 13, through the guiding action of the slope, the second locking element 20 moves towards the second end of the first locking element 10 while rotating, so that the first pivot axis L1 moves towards the second end of the first locking element 10 (as shown in the process of Figures 4 to 5 , i.e. the pivot portion 21 moves from the first position of the stroke hole 11 towards the second end of the first locking element 10 D. When the ending end 2312 of the guide slope 231 moves to contact the top portion 13 (as shown in the process of Figure 5As shown in FIG), the shaft portion 21 moves to the second position, at which time the engaging hook portion 22 has not yet entered the engaging groove 12, but is ready to enter the engaging groove 12. When the guiding slope 231 completely slides over the engaging top portion 13 (as shown in FIG), the engaging hook portion 22 is moved to the second position. Figures 5 to 6 As shown in the process, the second locking element 20 continues to rotate so that the engaging hook portion 22 enters the engaging groove 12, thereby engaging the second locking element 20 with the first locking element 10 (as shown in the process). Figure 6 As shown); and in this process, the second locking element 20 loses the support of the matching top portion 13, and the first end of the second locking element 20 is pulled by the strap 30, and the first pivot axis L11 moves toward the direction close to the first end of the first locking element 10, thereby causing the shaft portion 21 to move toward the first position, or to move to the first position, so that the engagement hook portion 22 and the engagement groove 12 are more firmly engaged and difficult to disengage.

[0071] like Figure 6 As shown, after the first locking element 10 and the second locking element 20 are engaged, not only do the hook portion 22 and the groove 12 engage, but the force applied to the second locking element 20 by the strap 30 on the mounting portion 40 also prevents the second locking element 20 from opening relative to the first locking element 10. Simply twisting the second end of the second locking element 20 in an attempt to open it will not allow the second locking element 20 to rotate and open. Therefore, the buckle's locking structure is highly reliable. Furthermore, the tighter the strap 30 is tied, the stronger the reverse force applied to the second locking element 20, resulting in a tighter engagement between the first and second locking elements 10, 20 and a more secure buckle. This prevents slippage and strap loosening, significantly improving load capacity.

[0072] If the second locking element 20 and the first locking element 10 need to be opened, the strap 30 is simply pulled, and the second end of the second locking element 20 is lifted by the strap 30 so that the second end of the second locking element 20 is rotated in a direction away from the second end of the first locking element 10, so that the engaging hook 22 is withdrawn from the engaging groove 12 and disengaged, thereby opening the second locking element 20 and the first locking element 10 (e.g., Figure 3 Therefore, for the buckle of the present application, when unlocking, it is difficult to open it by directly acting on the second locking element 20, but it is easy to open it through the strap 30, so its operation is very simple and convenient.

[0073] Furthermore, a matching portion 24 is provided at the second end of the second locking element 20. The matching portion 24 is connected to the end 2312 of the guide portion 23. When the end 2312 of the guide portion 23 slides over the matching portion 13, the matching portion 24 can enter a state of matching with the matching portion 13 (e.g., Figure 6The matching portion 24 and the matching portion 13 are matched, and the opening of the second locking element 20 relative to the first locking element 10 is further hindered, so as to enhance the reliability of the engagement connection of the first locking element 10 and the second locking element 20.

[0074] Further, the matching portion 24 and the end 2312 of the guide portion 23 are connected in an angle shape.

[0075] For the convenience of understanding the structural principle of the present application, the following is described in a more specific structure:

[0076] The first locking element 10 comprises first arm portions 14 arranged in parallel and spaced apart, and a first connecting portion 15 connected between the first arm portions 14. The first arm portions 14 and the first connecting portion 15 are integrally formed. In the embodiment, they are made of hard plastic material.

[0077] The first end of the first arm portion 14 away from the first connecting portion 15 is provided with the stroke hole 11. The stroke hole 11 is a long strip-shaped runway hole.

[0078] The side of the first connecting portion 15 away from the stroke hole 11 is provided with the engagement groove 12. The engagement groove 12 is a long strip-shaped groove, which is arranged along the length direction of the first connecting portion 15. The engagement groove 12 and the first connecting portion 15 are parallel to the first pivot axis L1.

[0079] The second end of the first arm portion 14 protrudes from the first connecting portion 15 towards the second locking element 20 to form the matching portion 13. In other words, the first connecting portion 15 is connected to the part of the second end of the first arm portion 14 away from the second locking element 20, so that the side of the first arm portion 14 close to the second locking element 20 protrudes relative to the first connecting portion 15, and the protruding part on the second end forms the matching portion 13.

[0080] Further, the matching portion 13 protrudes towards the opening direction X relative to the outer wall of the first wall portion 14. In this way, the matching portion 13 and the matching portion 24 are matched, which can further hinder the rotation of the second locking element 20, so as to further enhance the firmness after engagement, and avoid the opening of the second locking element 20 relative to the first locking element 10.

[0081] The second locking element 20 comprises second arm portions 25 arranged in parallel and spaced apart. The mounting portion 40 is connected between the first ends of the second arm portions 25. The second connecting portion 26 is connected between the second ends of the second arm portions 25. The second arm portions 25, the second connecting portion 26, and the mounting portion 40 integrally form a frame structure. In the embodiment, the second arm portions 25, the second connecting portion 26, and the mounting portion 40 are integrally formed, which are made of hard plastic material.

[0082] The rotation shaft part 21 is arranged on the outer wall of the mounting part 40, and protrudes relative to the mounting part 40 and the outer wall of the second arm part 25.

[0083] The second arm part 25 is arranged inside the first arm part 14, and the rotation shaft part 21 is respectively inserted into the stroke hole 11 of the first arm part 14, so that the first locking element 10 and the second locking element 20 are rotationally connected together.

[0084] Further, in order to facilitate the insertion of the rotation shaft part 21 into the stroke hole 11, the end surface of the rotation shaft part 21 is provided as a wedge surface, so as to facilitate the insertion of the rotation shaft part 21 into the stroke hole 11 by extrusion.

[0085] Further, the engaging hook part 22 is arranged on the side of the second connecting part 26 facing the first locking element 10. The engaging hook part 22 is integrally formed with the second connecting part 26. The engaging hook part 22 protrudes from the side surface of the second connecting part 26 facing the mounting part 40, and has a hook shape as a whole.

[0086] Further, in order to facilitate the sliding of the engaging hook part 22 into the engaging groove 12 for engagement, the side surface of the engaging hook part 22 facing the first locking element 10 is provided as a curved surface, so as to facilitate the sliding.

[0087] Further, the guide part 23 protrudes from the outer side of the second end of the second arm part 25. In some embodiments, the guide part 23 is integrally formed with the second arm part 25, and in some embodiments, the guide part 23 is integrally formed with the second connecting part 26.

[0088] The guide inclined surface 231 of the guide part 23 faces the rotation shaft part 21.

[0089] Further, the starting end 2311 of the guide inclined surface 231 is flush with the bottom of the engaging hook part 22, and the end 2312 of the guide inclined surface 231 is higher than the engaging hook part 22.

[0090] Further, the cooperating part 24 is arranged on the outer side of the second end of the second arm part 25. The cooperating part 24 is arranged adjacent to the guide part 23. The cooperating part 24 is connected with the end 2312 of the guide part 23, and when the end 2312 of the guide part 23 slides over the top part 13, the cooperating part 24 can enter a state of cooperation with the top part 13, so as to further hinder the opening of the second locking element 20 relative to the first locking element 10, so as to enhance the reliability of the engagement connection between the first locking element 10 and the second locking element 20.

[0091] Further, the connecting part 24 and the end 2312 of the guide part 23 are connected at an angle.

[0092] Further, a lead-in slope 16 is provided on the inner side of the first connecting part 15 of the first locking element 10. The lead-in slope 16 is provided on the side of the first connecting part 15 opposite the engagement groove 12. When the strap 30 is passed from the inside of the first locking element 10, the strap 30 is arranged along the lead-in slope 16 and then passed between the second end of the first locking element 10 and the second end of the second locking element 20.

[0093] The strap 30 is flat and should have a certain flexibility, so as to be able to follow a curved path and be clamped between the first locking element 10 and the second locking element 20. The strap 30 is preferably a non-elastic strap 30. The non-elasticity refers to the fact that the strap 30 is not a silicone elastic strap 30. Although theoretically any band fabric has a certain elasticity, this small range of elasticity is not considered to be elastic in the strict sense.

[0094] When the carabiner of the present embodiment is used, one end of the strap 30 is mounted on the mounting part 40, and the other end is a free end and can be used for binding.

[0095] When fixing is required, as shown in the process of Figures 2 to 3 , the strap 30 is wrapped around the columnar object 200, such as a bicycle rod, and then the free end of the strap 30 is passed from the space between the first arm part 14 and the first connecting part 15 (as shown in Figure 3 ), and then passed out from the second end of the first locking element 10 and the second locking element 20. The strap is pulled tight so that the strap, the carabiner, and the columnar object 200 do not move relative to each other, and then the second locking element 20 is driven to rotate, so that the second end of the second locking element 20 is engaged 24 with the second end of the first locking element 10, so as to clamp the bent strap 30 between the second end of the first locking element 10 and the second locking element 20, achieving overall fixation.

[0096] In the process of engaging 24 the second locking element 20 and the first locking element 10 (as shown in the process of Figures 3 to 6 ), the second locking element 20 is first driven to contact the abutment part 13 at the starting end 2311 of the guide part 23 (as shown in Figure 4 ), since the pivot part 21 is movably arranged in the stroke hole 11 and the second locking element 20 has a movable degree of freedom, under the guidance of the guide slope 231 of the guide part 23, the second locking element 20 rotates while also moving relative to the first locking element 10, and the pivot part 21 moves from the first position towards the direction close to the first end of the first locking element 10. The second locking element 20 continues to move until the end of the guide part 23 contacts the abutment part 13 (as shown in Figure 5As shown in FIG. 6, when the second locking element 20 is moved to the second position, the engaging hook 22 is still not in the engaging groove 24 and is engaged with the engaging groove 24. When the second locking element 20 continues to move, the end of the guide 23 slides over the top 13, the engaging hook 22 can enter the engaging groove 24 and be engaged with the engaging groove 24 (as shown in FIG. 7). Figure 6 As shown in FIG. 7, the strap 30 on the mounting portion 40 exerts a force on the second locking element 20, pulling the second locking element 20 to move towards the first end of the first locking element 10, so that the engaging hook 22 is engaged with the engaging groove 24 and remains in the engaged state. The force exerted by the strap 30 on the second locking element 20 prevents the second locking element 20 from being opened relative to the first locking element 10, so that the strap 30 is fixed and not easy to slip or loosen. The tighter the strap 30 is tied, the stronger the force exerted by the strap 30 on the second locking element 20 in the opposite direction, and the more firmly the second locking element 20 and the first locking element 10 are engaged 24, and the tighter the fixing belt is fixed and the less likely it is to slip or loosen.

[0097] When it is necessary to open the buckle to loosen the strap 30, the free end of the strap 30 is pulled. Since a part of the strap 30 is bent and clamped between the first locking element 10 and the second end of the second locking element 20, when the strap 30 is pulled, the strap 30 acts on the second locking element 20, so that the engaging hook 22 of the second locking element 20 moves towards the opening direction and disengages from the engaging groove 24, so that the second end of the first locking element 10 and the second locking element 20 can be opened, so as to loosen the buckle, the strap 30 and the columnar object 200.

[0098] The buckle of the present application is very suitable for detachable connection, which not only can be connected very firmly, but also can greatly improve the load capacity, and will not slip or slip due to the increase of load weight, and is fixed very firmly, will not loosen, will not slip, and will not shake. When opened, only the strap 30 needs to be pulled, and the engaging hook 22 is driven out of the engaging groove 24 by using the principle of leverage, which is not only convenient to operate, but also saves labor.

[0099] The buckle of the present invention can be applied to many kinds of articles, for example, bicycle bags, outdoor water bottles and other articles with a certain weight can be installed using the buckle of the present invention. During installation, other articles that need to be installed, such as bicycle bags, are passed through the strap 30, and as the strap 30 is fixed, the articles are also fixed. In order to facilitate the interpretation and precise definition of the appended claims, the terms "upper", "lower", "inner", "outer", "above", "below", "above", "below", "upward", "downward", "front", "back", "behind", "inside", "outside", "inward", "outward", "inside", "outside", "inner", "outside", "inner", "external", "forward", and "backward" are used to describe the features of the exemplary embodiments with reference to the positions of these features shown in the accompanying drawings.

[0100] The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. The foregoing descriptions are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and it is apparent that many variations and modifications are possible in light of the foregoing teachings. The exemplary embodiments have been selected and described to illustrate the specific principles of the invention and their practical application, thereby enabling others skilled in the art to make and utilize the various exemplary embodiments of the invention and their various alternatives and modifications. The scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A belt buckle, characterized by It comprises: a first locking element, a second locking element capable of rotating relative to the first locking element about a first pivot axis, a first end of the first locking element or the second locking element close to the first pivot axis is provided with a mounting portion for threading a strap, and a second end of the first locking element and the second locking element away from the first pivot axis can be engaged together and opened, in use, the strap extending from the mounting portion can be threaded between the second ends of the first locking element and the second locking element to be looped around a column, and a portion of the strap can be fixed between the second ends of the first locking element and the second locking element by engagement of the first locking element and the second locking element, and the strap can be loosened by opening of the first locking element and the second locking element.

2. The buckle of claim 1, wherein the first locking element and the second locking element are configured such that when the second end of the first locking element and the second end of the second locking element are engaged together, the strap can apply an action to the first end of the second locking element to hinder the second locking element from being opened relative to the first locking element.

3. The buckle of claim 1, wherein the position of the first pivot axis is movably arranged, when the second locking element is rotated relative to the first locking element for engagement, the first pivot axis moves towards the second end of the first locking element, when the second end of the second locking element is engaged with the second end of the first locking element, the first pivot axis moves towards the first end of the first locking element.

4. The buckle of claim 3, wherein a stroke hole is provided at the first end of the first locking element, the first end of the second locking element is rotatably connected with the first locking element by a pivot portion movably arranged in the stroke hole, when the second locking element is rotated relative to the first locking element for engagement, the pivot portion moves from a first position of the stroke hole towards the second end of the first locking element to a second position of the stroke hole, when the second end of the second locking element is engaged with the second end of the first locking element, the action force applied to the first end of the second locking element by the strap drives the pivot portion to move from the second position of the stroke hole towards the first position.

5. The buckle of claim 4, wherein, the mounting portion is provided at the first end of the second locking element, a strap hole for threading the strap is provided on the mounting portion, and the pivot portion is protrudingly arranged on opposite outer walls of the mounting portion, and the central axis of the pivot portion is the first pivot axis.

6. The buckle of claim 4, wherein, a protruding engagement hook portion is provided at the second end of the second locking element, and an inner recessed engagement groove is provided at the second end of the first locking element, and the engagement hook portion can be engaged with the engagement groove to engage the first locking element and the second locking element together.

7. The buckle of claim 6, wherein, A guide portion is arranged at the second end of the second locking element, and a matching portion corresponding to the guide portion is arranged at the second end of the first locking element. The guide portion can slide along the matching portion to drive the first pivot axis L to move towards the second end of the first locking element.

8. The buckle of claim 7, wherein: The guide portion is provided with a guide slope, and the distance between the starting end of the guide slope and the first pivot axis L is greater than the distance between the ending end of the guide slope and the first pivot axis L. The starting end of the guide slope is the end that first acts on the matching portion during engagement, and is arranged at the end of the guide portion facing the first locking element. The ending end of the guide slope is the end that last acts on the matching portion during engagement.

9. The buckle of claim 8, wherein, A matching portion is arranged at the second end of the second locking element, and the ending end of the guide portion is connected to the matching portion. When the ending end of the guide portion slides over the matching portion, the matching portion can enter a state of cooperation with the matching portion.

10. The buckle of claim 7, wherein, The first locking element comprises first arm portions arranged in parallel and spaced apart, and a first connecting portion connected between the first arm portions. The first end of the first arm portion away from the first connecting portion is provided with the stroke hole, and the side of the first connecting portion away from the stroke hole is provided with the engagement slot extending along the length direction of the first connecting portion.

11. The buckle of claim 10, wherein, The second end of the first arm portion protrudes from the first connecting portion towards the second locking element to form the matching portion.

12. The buckle of claim 7, wherein: The second locking element comprises second arm portions arranged in parallel and spaced apart. The first end of the second arm portion is connected with the mounting portion, and the second end of the second arm portion is connected with the second connecting portion. The second arm portion is arranged inside the first arm portion. The engagement hook portion facing the mounting portion and protruding from the surface of the second connecting portion is arranged on the second connecting portion.

13. The buckle of claim 12, wherein, The guide portion protrudes from both sides of the second arm portion.

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