A wheel retainer

Abstract

This utility model provides a wheel fastener, belonging to the field of mechanical technology. It solves the problems of inconvenient and time-consuming operation of existing wheel fasteners. This wheel fastener includes a bracket, a strap, a tensioning frame, a reversing shaft, and a belt shaft. The tensioning frame is hinged to the bracket via a hinge shaft. A self-locking shaft and a tensioning shaft are fixed on the tensioning frame, arranged parallel to the hinge shaft and in a triangular distribution. One end of the strap has a hook, and the other end passes sequentially around the reversing shaft, the self-locking shaft, and the tensioning shaft before wrapping around the belt shaft. When the tensioning frame swings to the first position, the tensioning shaft is below the self-locking shaft, and both are located between the hinge shaft and the reversing shaft. When the tensioning frame swings to the second position, the tensioning shaft is below the line connecting the hinge shaft and the reversing shaft, and the self-locking shaft is below the tensioning shaft. During operation, simply rotate the belt shaft gently to pre-tighten, and then push the swinging frame upwards to tighten the strap and achieve self-locking. The operation is simple and labor-saving.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a wheel retainer. Background Technology

[0002] During transportation, vehicles need to have their wheels secured to prevent them from moving around and ensure safety. Wheel clamps are tools used to secure vehicle wheels during transport.

[0003] For example, Chinese patent application (application number 201920016137.4) discloses a wheel fastener, including a bracket that abuts against the wheel, a spool rotatably mounted on the bracket, and a binding strap. The bracket is equipped with a tensioning shaft one and a tensioning shaft two. The extended end of the binding strap is connected to a hook, and the other end is wound around the spool after passing through the first and second reversing shafts. This wheel fastener also includes a bird deflector and two ratchet wheels respectively fixedly mounted on both ends of the spool. The bird deflector includes two V-shaped, symmetrically arranged pawls, each located on the side of a ratchet wheel. The middle portions of the two pawls are hinged to the outer walls of two side plates of the bracket, and one end of each pawl can engage with the corresponding ratchet wheel. To secure the vehicle, the bracket is placed against the wheel and fixed to the truck floor. The binding strap is then looped around the wheel hook and hooked onto a hook hole in the truck floor. The spool is then rotated using a tool to tighten the binding strap, thus securing the wheel.

[0004] The aforementioned wheel fastener requires a tool to continuously rotate the roller to tighten the strap when securing the wheel. Moreover, the more it is tightened, the greater the force required, making the operation inconvenient, time-consuming, and labor-intensive.

[0005] To solve the above problems, the conventional approach is to use a special, labor-saving tool to rotate the scroll, which is costly. Summary of the Invention

[0006] The purpose of this utility model is to address the aforementioned problems in existing technologies by proposing a wheel retainer. The technical problem to be solved by this utility model is: how to solve the problem that existing wheel retainers are inconvenient to operate and time-consuming and labor-intensive.

[0007] The purpose of this utility model can be achieved through the following technical solution: A wheel retainer includes a bracket and a strap. The bracket is provided with a reversing shaft and a belt shaft. One end of the strap has a hook. The bracket is provided with a hook. The belt shaft can rotate and be positioned relative to the bracket. The wheel retainer is characterized in that it further includes a tensioning frame. The tensioning frame is hinged to the bracket via a hinge shaft. A self-locking shaft and a tensioning shaft are fixed on the tensioning frame. The self-locking shaft, tensioning shaft, and hinge shaft are arranged in parallel and in a triangular distribution. The other end of the strap passes around the reversing shaft, the self-locking shaft, and the tensioning shaft in sequence and then wraps around the belt shaft. When the tensioning frame swings around the hinge shaft to a first position, the tensioning shaft and the self-locking shaft are both located between the hinge shaft and the reversing shaft, and the tensioning shaft is located below the self-locking shaft. When the tensioning frame swings around the hinge shaft to a second position, the tensioning shaft is located below the line connecting the hinge shaft and the reversing shaft, and the self-locking shaft is located below the tensioning shaft.

[0008] When securing a vehicle with this wheel fastener, the tensioning frame is swung to the first position, the bracket is placed against the wheel, and fixed to the truck floor via hooks. Then, the end of the strap with the hook is looped around the wheel hook and hooked onto the hook hole on the truck floor. At this time, the tensioning shaft and the self-locking shaft are both located between the hinge shaft and the first reversing shaft, with the tensioning shaft located below the self-locking shaft. The other end of the strap is looped around the first reversing shaft, the self-locking shaft, and the tensioning shaft in sequence and then wrapped around the belt shaft. Rotating the belt shaft pre-tensions the strap. During this process, rotating the belt shaft does not require much effort. Then, the tensioning frame is pushed to swing around the hinge shaft. Since the self-locking shaft, tensioning shaft, and hinge shaft are arranged in parallel and in a triangular distribution, the self-locking shaft and tensioning shaft can further wind and tighten the pre-tensioned strap during the swing. When the tensioning frame is swung to the second position, the self-locking shaft is below the tensioning shaft, and the tensioning shaft is below the line connecting the hinge shaft and the first reversing shaft, passing the critical point bounded by the line connecting the hinge shaft and the first reversing shaft. After the strap is tensioned, it always exerts a downward pulling force on the self-locking shaft and tensioning shaft, preventing the tensioning frame from swinging back upward, thus achieving self-locking and fixing the wheel. In other words, with the design of the above structure, during operation, it is only necessary to first gently rotate the belt shaft to achieve pre-tensioning, and then forcefully push the tensioning frame downward to further tighten the strap and achieve self-locking. There is no need to keep turning the belt shaft laboriously, making the operation simple and labor-saving.

[0009] In the aforementioned wheel retainer, the bracket is provided with an arc-shaped locking groove concentric with the hinge shaft. The two ends of the locking groove are located on the upper and lower sides of the hinge shaft, respectively. The self-locking shaft passes through the locking groove. When the tensioning frame swings to the first position, the self-locking shaft swings to the upper end of the locking groove; when the tensioning frame swings to the second position, the self-locking shaft swings to the lower end of the locking groove. The locking groove design makes the swing of the tensioning frame more stable, preventing skewing. The concentric arrangement allows the self-locking shaft to smoothly move along the locking groove after the tensioning frame swings, achieving tensioning and self-locking, making operation smoother and simpler. Meanwhile, the two end walls of the locking groove can be used as abutments for the self-locking shaft. When the self-locking shaft abuts against the upper end wall of the locking groove, the tensioning frame is in the first position, which, together with the belt shaft, enables the pre-tensioning of the strap. When the self-locking shaft abuts against the lower end wall of the locking groove, the tensioning frame is in the second position. After the strap is tensioned, it always exerts a downward pulling force on the self-locking shaft and the tensioning shaft. The self-locking shaft presses tightly against the lower end wall of the locking groove to achieve self-locking, eliminating concerns about excessive swinging and making operation simpler.

[0010] Preferably, in the aforementioned wheel retainer, the self-locking shaft, tensioning shaft, and hinge shaft are arranged in a right-angled isosceles triangle, and the central angle of the locking groove is greater than 180°. This makes it easier to set up, provides better uniformity, and ensures that when the tensioning frame swings from the first position to the second position, the tensioning shaft can rewrap the strap to achieve tension, while the self-locking shaft can further tension the strap while simultaneously locking itself.

[0011] Preferably, in the aforementioned wheel retainer, the bracket is further provided with a second reversing shaft, with the first reversing shaft located below the second reversing shaft. The design of the second reversing shaft allows the straps to exert greater tension on the tire.

[0012] In the aforementioned wheel retainer, the outer diameter of the tensioning shaft is larger than that of the self-locking shaft, and the outer peripheral wall of the tensioning shaft has friction patterns or particles. The larger outer diameter of the tensioning shaft results in a larger contact area with the strap, and the friction patterns or particles also generate friction between the tensioning shaft and the strap while tensioning it, further aiding in the tightening of the strap and improving stability.

[0013] In the aforementioned wheel fastener, a control handle is also connected to the tensioning frame or self-locking shaft. The design of the control handle makes it easier to swing the tensioning frame upwards to move the tensioning shaft and self-locking shaft together to tension the straps and to swing the self-locking shaft upwards to achieve self-locking. This makes it easier to apply force and makes operation simpler and less strenuous.

[0014] In the aforementioned wheel retainer, the operating handle includes a Z-shaped handle portion and a plate-shaped connecting portion. The handle portion is fixed or integrally formed in the middle of the connecting portion and sleeved on the hinge shaft. One end of the connecting portion is sleeved on the end of the self-locking shaft. This structural design of the operating handle creates a lever arm between the operating handle and the self-locking shaft, making the downward swinging operation to tighten the straps more effortless.

[0015] Preferably, in the aforementioned wheel retainer, a friction element is provided between the belt axle and the bracket to generate friction between them. The friction element provides frictional resistance between the belt axle and the bracket, ensuring that the belt axle does not rotate back during the pre-tensioning stage, thus providing a certain pre-tensioning force. Simultaneously, after pre-tensioning, when the tensioning frame is pushed upwards to tension the strap, a certain amount of allowance is provided to ensure the self-locking shaft can move into position and achieve self-locking.

[0016] Preferably, in the aforementioned wheel retainer, friction elements are fitted at both ends of the belt axle, and the friction elements are circumferentially fixed to the belt axle. A knob sleeve is also fitted at both ends of the belt axle. The friction element has a first one-way tooth, and the knob sleeve has a second one-way tooth. A spring is also fitted on the belt axle, with one end of the spring abutting against the belt axle and the other end abutting against the knob sleeve. Under the elastic force of the spring, the second one-way tooth on the knob sleeve meshes with the first one-way tooth on the friction element. With this configuration, under normal conditions, the knob sleeve remains engaged with the friction element under the action of elastic force. Rotating the knob sleeve can drive the friction element and the belt axle to rotate together, pre-tightening the strap. If too much force is applied and the rotation is excessive, the knob sleeve will slip between the friction element and the one-way structure and the spring, and the belt axle will not continue to rotate, thus avoiding over-tightening of the strap and affecting subsequent tensioning and self-locking operations.

[0017] In the aforementioned wheel clamp, hinged arms are fixed at both ends of the reversing shaft, and the reversing shaft is hinged to the bracket via the hinged arms. The hook is hinged to the reversing shaft, and the bracket has a bent portion in the middle, allowing the reversing shaft to swing and rest against the bent portion. This design facilitates the connection between the bracket and the truck floor, making operation simpler.

[0018] Compared with existing technologies, this wheel retainer has the following advantages:

[0019] 1. During operation, simply rotate the belt shaft gently to achieve pre-tensioning, and then push the swing frame upward to tighten the strap and achieve self-locking. There is no need to keep turning the belt shaft with great effort. The operation is simple and labor-saving.

[0020] 2. While tensioning the strap, the tensioning shaft also generates friction between itself and the strap, which further helps to tighten the strap and improves stability.

[0021] 3. The belt shaft is easy to operate during the pre-tightening stage, and the pre-tightening force is controllable. At the same time, after the pre-tightening is completed, when the tensioning frame is pushed to swing upward so that the tensioning shaft tightens the strap, the belt shaft can also reserve a certain amount of retraction and release allowance to ensure that the self-locking shaft can move into place to achieve self-locking. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the wheel clamp.

[0023] Figure 2 This is a cross-sectional view of the wheel clamp.

[0024] Figure 3 This is a cross-sectional view of the wheel retainer in a pre-tightened state when used to secure a wheel.

[0025] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0026] Figure 5 This is a cross-sectional view of the wheel retainer in the locked state when used to secure a wheel.

[0027] Figure 6 yes Figure 5 Enlarged view of point B in the middle.

[0028] Figure 7 This is a 3D view of the knob sleeve.

[0029] Figure 8 It is a 3D view of the friction component.

[0030] In the diagram, 1. Wheel; 2. Bracket; 2a. Locking groove; 3. Strap; 4. Reversing shaft one; 5. Reversing shaft two; 6. Belt shaft; 7. Belt hook; 8. Tensioner; 9. Self-locking shaft; 10. Tensioning shaft; 11. Hinge shaft; 12. Operating handle; 12a. Handle part; 12b. Connecting part; 13. Friction component; 13a. One-way tooth one; 14. Knob sleeve; 14a. One-way tooth two; 15. Spring; 16. Hinge arm; 17. Hook. Detailed Implementation

[0031] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] like Figure 1 , 3As shown in Figure 5, this wheel retainer includes a bracket 2 and a strap 3. The bracket 2 has two side plates, which are connected and fixed together by several connecting posts. One side of the bracket 2 also has a stop plate for abutting against the wheel 1. The bracket 2 is also provided with a reversing shaft 4, a reversing shaft 5, and a belt axle 6. The reversing shaft 4 is located below the reversing shaft 5. The two ends of the reversing shaft 4 are fixed with hinge arms 16, and the reversing shaft 4 is hinged to the bracket 2 through the hinge arms 16. A hook 17 is also hinged on the reversing shaft 4. The middle part of the bracket 2 has a bent part, and the reversing shaft 4 can swing and abut against the bent part.

[0033] A tensioning frame 8, which can swing relative to the support 2, is hinged to the support 2. The tensioning frame 8 includes two triangular plates, one of which has a hinge shaft 11. The two triangular plates are respectively hinged to the two side plates of the support 2 via the hinge shaft 11. The tensioning frame 8 is provided with a self-locking shaft 9 and a tensioning shaft 10. The self-locking shaft 9, tensioning shaft 10, and hinge shaft 11 are arranged in parallel. The self-locking shaft 9 and tensioning shaft 10 are respectively located at the other two corners of the tensioning frame 8, so that the three are triangularly distributed. The two ends of the tensioning shaft 10 are respectively fixed to the two triangular plates. The two side plates of the support 2 are also provided with arc-shaped locking grooves 2a. The locking grooves 2a are concentric with the hinge shaft 11, and the two ends of the locking grooves 2a are respectively located on the upper and lower sides of the hinge shaft 11. The two ends of the self-locking shaft 9 pass through the two triangular plates of the tensioning frame 8 and are inserted into the locking grooves 2a. One end of the strap 3 has a hook 7, and the other end of the strap 3 passes sequentially around the first reversing shaft 4, the second reversing shaft 5, the self-locking shaft 9, and the tensioning shaft 10 before being wound around the belt shaft 6. In this example, the self-locking shaft 9, the tensioning shaft 10, and the hinge shaft 11 are arranged in a right-angled isosceles triangle, and the central angle of the locking groove 2a is greater than 180°.

[0034] Specifically, such as Figure 3-6 As shown, when the tensioning frame 8 swings relative to the support 2 to the first position, the self-locking shaft 9 is located at the upper end of the locking groove 2a. Both the tensioning shaft 10 and the self-locking shaft 9 are located between the hinge shaft 11 and the reversing shaft 4, with the tensioning shaft 10 located below the self-locking shaft 9. When the tensioning frame 8 swings relative to the support 2 to the second position, the self-locking shaft 9 is located at the lower end of the locking groove 2a, and the tensioning shaft 10 is located below the line connecting the hinge shaft 11 and the reversing shaft 4, with the self-locking shaft 9 located below the tensioning shaft 10. The outer diameter of the tensioning shaft 10 is larger than the outer diameter of the self-locking shaft 9, and the outer peripheral wall of the tensioning shaft 10 has friction patterns or particles.

[0035] like Figure 1 As shown, a control handle 12 is also connected to the tensioning frame 8 or the self-locking shaft 9. In this embodiment, the control handle 12 includes a Z-shaped handle portion 12a and a plate-shaped connecting portion 12b. The handle portion 12a is fixed or integrally formed in the middle of the connecting portion 12b and sleeved on the hinge shaft 11. One end of the connecting portion 12b is sleeved on the end of the self-locking shaft 9.

[0036] Furthermore, such as Figure 2 , 7 As shown in Figure 8, a friction element 13 is provided between the belt shaft 6 and the bracket 2 to generate friction between the two. The friction element 13 is sleeved on both ends of the belt shaft 6 and is circumferentially fixed to the belt shaft 6. A knob sleeve 14 is also sleeved on both ends of the belt shaft 6. The friction element 13 has a one-way tooth 13a, and the knob sleeve 14 has a two-way tooth 14a. A spring 15 is also sleeved on the belt shaft 6. A washer and a locking nut are provided on both ends of the belt shaft 6. One end of the spring 15 abuts against the washer of the belt shaft 6, and the other end abuts against the knob sleeve 14. Under the elastic force of the spring 15, the two-way tooth 14a on the knob sleeve 14 meshes with the one-way tooth 13a on the friction element 13 and presses the friction plate against the corresponding side plate of the bracket 2.

[0037] When using this wheel fastener, the strap 3 is looped around the wheel 1 and hooked onto the hook 17 hole on the truck floor. Then, the bracket 2 is placed against the wheel 1 and fixed to the truck floor. First, rotate the knob sleeve 14. The knob sleeve 14 drives the friction plate and the belt shaft 6 to rotate relative to the bracket 2 against the friction force, pre-tightening the strap 3. The knob sleeve 14 and the friction piece 13 are connected by the spring 15, one-way gear 13a, and one-way gear 14a, which can prevent over-tightening. At this time, the tensioning frame 8 is in the first position, the self-locking shaft 9 is located at the upper end of the locking groove 2a, and both the tensioning shaft 10 and the self-locking shaft 9 are located between the hinge shaft 11 and the reversing shaft 4, with the tensioning shaft 10 located below the self-locking shaft 9. The strap 3 is kept in a pre-tight state under the friction force between the friction plate and the bracket 2. Figure 3 and 4 As shown. Then, by forcefully pushing the tensioning frame 8 downwards using the operating handle 12, the tensioning frame 8 swings relative to the bracket 2 to the second position, that is, the self-locking shaft 9 swings to the lower end of the locking groove 2a. During the swing, the tensioning shaft and the self-locking shaft further wind and tighten the strap 3. Since the tensioning frame 8 swings downwards to the second position, the position of the tensioning shaft 10 crosses the critical point bounded by the line connecting the reversing shaft 4 and the hinge shaft 11, that is, the tensioning shaft 10 is located diagonally below the line connecting the reversing shaft 4 and the hinge shaft 11. At this time, the strap 3 remains taut. After the strap 3 is tightened, it always exerts a downward pulling force on the self-locking shaft 9 and the tensioning shaft 10, so that the self-locking shaft 9 is pressed tightly against the lower inner wall of the locking groove 2a, preventing the tensioning frame 8 from swinging back upwards, thus achieving self-locking and completing the fixation of the wheel 1. Figure 5 and 6 As shown. In other words, with the design of the above structure, during operation, it is only necessary to first gently rotate the belt shaft 6 to achieve pre-tightening, and then forcefully push the swing frame downward to tighten the strap 3 and achieve self-locking. There is no need to keep turning the belt shaft 6 laboriously, making the operation simple and labor-saving.

[0038] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0039] Although this document frequently uses terms such as wheel 1, bracket 2, locking groove 2a, strap 3, reversing shaft one 4, reversing shaft two 5, belt shaft 6, belt hook 7, tensioning frame 8, self-locking shaft 9, tensioning shaft 10, hinge shaft 11, operating handle 12, handle part 12a, connecting part 12b, friction element 13, one-way gear one 13a, knob sleeve 14, one-way gear two 14a, spring 15, hinge arm 16, hook 17, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A wheel retainer, comprising a bracket (2) and a strap (3), wherein the bracket (2) is provided with a reversing shaft (4) and a belt shaft (6), one end of the strap (3) has a hook (7), the bracket (2) is provided with a hook (17), and the belt shaft (6) is rotatable and positionable relative to the bracket (2), characterized in that, This wheel retainer also includes a tensioning frame (8), which is hinged to the bracket (2) via a hinge shaft (11). A self-locking shaft (9) and a tensioning shaft (10) are fixed on the tensioning frame (8). The self-locking shaft (9), tensioning shaft (10), and hinge shaft (11) are arranged in parallel and in a triangular configuration. The other end of the strap (3) passes sequentially around the reversing shaft (4), the self-locking shaft (9), and the tensioning shaft (10) before wrapping around the belt shaft (6). When the tensioning frame ( 8) When the tensioning frame (8) swings around the hinge shaft (11) to the first position, the tensioning shaft (10) and the self-locking shaft (9) are both located between the hinge shaft (11) and the reversing shaft (4), and the tensioning shaft (10) is located below the self-locking shaft (9). When the tensioning frame (8) swings around the hinge shaft (11) to the second position, the tensioning shaft (10) is located below the line connecting the hinge shaft (11) and the reversing shaft (4), and the self-locking shaft (9) is located below the tensioning shaft (10).

2. The wheel retainer according to claim 1, characterized in that, The bracket (2) is provided with an arc-shaped locking groove (2a) that is co-centered with the hinge shaft (11). The two ends of the locking groove (2a) are located on the upper and lower sides of the hinge shaft (11), respectively. The self-locking shaft (9) passes through the locking groove (2a). When the tensioning frame (8) swings to the first position, the self-locking shaft (9) swings to the upper end of the locking groove (2a). When the tensioning frame (8) swings to the second position, the self-locking shaft (9) swings to the lower end of the locking groove (2a).

3. The wheel retainer according to claim 2, characterized in that, The self-locking shaft (9), tensioning shaft (10) and hinge shaft (11) are arranged in a right-angled isosceles triangle, and the central angle of the locking groove (2a) is greater than 180°.

4. The wheel retainer according to claim 1, 2, or 3, characterized in that, The bracket (2) is also provided with a second reversing shaft (5), and the first reversing shaft (4) is located below the second reversing shaft (5).

5. The wheel retainer according to claim 1, 2, or 3, characterized in that, The outer diameter of the tensioning shaft (10) is larger than the outer diameter of the self-locking shaft (9), and the outer peripheral wall of the tensioning shaft (10) has friction patterns or particles.

6. The wheel retainer according to claim 5, characterized in that, An operating handle (12) is also connected to the tensioning frame (8) or the self-locking shaft (9).

7. The wheel retainer according to claim 6, characterized in that, The operating handle (12) includes a Z-shaped handle part (12a) and a plate-shaped connecting part (12b). The handle part (12a) is fixed or integrally formed in the middle of the connecting part (12b) and sleeved on the hinge shaft (11). One end of the connecting part (12b) is sleeved on the end of the self-locking shaft (9).

8. The wheel retainer according to claim 1, 2, or 3, characterized in that, A friction element (13) that can generate friction between the belt shaft (6) and the bracket (2) is also provided.

9. The wheel retainer according to claim 8, characterized in that, Friction elements (13) are fitted at both ends of the belt shaft (6), and the friction elements (13) are circumferentially fixed to the belt shaft (6). Knob sleeves (14) are also fitted at both ends of the belt shaft (6). The friction elements (13) have a one-way tooth (13a), and the knob sleeves (14) have a two-way tooth (14a). A spring (15) is also fitted on the belt shaft (6). One end of the spring (15) abuts against the belt shaft (6), and the other end abuts against the knob sleeves (14). Under the elastic force of the spring (15), the two-way tooth (14a) on the knob sleeves (14) meshes with the one-way tooth (13a) on the friction elements (13).

10. The wheel retainer according to claim 1, 2, or 3, characterized in that, The two ends of the reversing shaft (4) are fixed with hinge arms (16) and the reversing shaft (4) is hinged to the bracket (2) through the hinge arms (16). The hook (17) is hinged on the reversing shaft (4). The bracket (2) has a bent part in the middle. The reversing shaft (4) can swing and abut against the bent part.

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