Novel bicycle dragging device

Abstract

The utility model relates to the technical field of bicycle auxiliary tools, in particular to a novel bicycle dragging device. The traction mechanism comprises a front vehicle and a rear vehicle assembled at the tail of the front vehicle, a wheel axle is arranged at the axis of a front wheel of the rear vehicle, the traction mechanism is assembled between the front vehicle and the rear vehicle and comprises a traction rod, a connector, a trailer rod, a fixing rib plate and a butt joint assembly, and a supporting rod of a cushion of the front vehicle is connected with the traction rod through a universal joint. By means of the structural design of the dragging mechanism and the butt joint assembly, the front vehicle and the rear vehicle can be conveniently connected through the device, triangular-like stable connection can be formed, connection firmness is improved, torsion of the handlebar assembly of the rear vehicle is avoided, safety of the device is improved, and the device is suitable for popularization and application. And through the structural design of the traction rod, the connector, the trailer rod and the telescopic mechanism, the device can be folded and stored when not used, space is saved, the position of the telescopic rod can be adjusted, and the using effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle auxiliary tools, in particular to a novel bicycle towing device. Background Art

[0002] A bicycle, also known as a bike or bicycle, is a compact land transportation tool that generally adopts a two-wheel design. After the rider sits on the seat, he or she pedals with both feet to drive forward. This way of travel not only exercises the body, but also reflects the friendliness and protection of the environment. It is a model of green travel. Bicycles can be divided into two categories according to the different groups of people they are suitable for: bicycles for adults and bicycles designed for children. At present, there are products that can be towed and connected with children's bicycles through adult bicycles;

[0003] For example, a children's bicycle trailer bar with a publication (announcement) number of CN214874067U relates to the bicycle technical field. The solution includes a telescopic tube set, a universal joint, a clamp, a U-shaped clamp and a faucet fixing piece. The clamp is fixedly arranged at one end of the universal joint, the other end of the universal joint is fixedly arranged at one end of the telescopic tube set, the other end of the telescopic tube set is fixedly connected to the U-shaped clamp, and one end of the faucet fixing piece is fixedly arranged on the telescopic tube set.

[0004] In summary, it can be seen that the following technical problems exist in the prior art: during the use of the above-mentioned prior art, although the purpose of towing the rear bicycle by the front bicycle can be achieved, it is only connected to the rear bicycle through a one-way telescopic tube group, and during the use of the U-shaped hoop and the universal joint, since the connecting rod of the handlebar assembly of the rear bicycle and the U-shaped hoop is a rotating body, the U-shaped hoop and the connecting rod are prone to twisting, resulting in an unstable connection between the front and rear bicycles. There is room for improvement. For this reason, we propose a new bicycle towing device. Utility Model Content

[0005] The purpose of the utility model is to provide a novel bicycle towing device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A novel bicycle towing device comprises a front vehicle and a rear vehicle mounted at the rear of the front vehicle, wherein the axis of the front wheel of the rear vehicle is provided with a wheel axle, a towing mechanism is mounted between the front vehicle and the rear vehicle, the towing mechanism comprises a towing rod, a connecting head, a towing rod, a fixed rib plate and a docking assembly, a support rod of a seat cushion of the front vehicle is connected to the towing rod via a universal joint, a connecting head is fixed to one end of the towing rod, both sides of one end of the connecting head are rotatably connected to the towing rod via pins, the towing rod is connected to the support rod of the seat cushion of the rear vehicle via a universal joint, both sides of the bottom of the connecting head are rotatably connected to the fixed rib plates via pins, and one end of the two fixed rib plates is equipped with a docking assembly.

[0008] Preferably, the docking assembly includes a U-shaped fixing plate, a two-way threaded rod, a rotating shaft, a telescopic cylinder, a telescopic rod and a docking hole, one end of the two fixed ribs is fixed with a U-shaped fixing plate, two ends of the inner side of the U-shaped fixing plate are rotatably connected to a two-way threaded rod, one end of the U-shaped fixing plate is rotatably connected to the rotating shaft, one end of the rotating shaft passes through the U-shaped fixing plate and is fixed to the two-way threaded rod, the two ends of the two-way threaded rod have opposite threads, the two ends of the outer side of the two-way threaded rod are threadedly connected to the telescopic cylinder, the telescopic cylinder is slidably connected to the inner side of the U-shaped fixing plate, one end of the telescopic cylinder is equipped with a telescopic rod, one end of the telescopic rod is provided with a docking hole corresponding to the position of the wheel axle, and the docking hole is slidably connected to the wheel axle.

[0009] Preferably, a telescopic mechanism is installed between the telescopic cylinder and the telescopic rod, and the telescopic mechanism is used to adjust the position of the telescopic rod.

[0010] Preferably, the telescopic mechanism includes an accommodation box, a rotating rod and a force gear, an accommodation box is fixed on one side of the telescopic cylinder, a storage groove is opened on the inner side of the telescopic cylinder, the storage groove is slidably connected to the telescopic rod, the storage groove is communicated with the accommodation box, a rotating rod is rotatably connected to one side of the accommodation box, a force gear is fixed on one end of the rotating rod, and the force gear is meshingly connected to the telescopic rod.

[0011] Preferably, an adjustment mechanism is installed on the outer side of the placement box.

[0012] Preferably, the adjustment mechanism includes an adjustment rod, teeth and a tensioning spring. The top of the placement box is slidably connected with an adjustment rod, one end of the adjustment rod is fixed with teeth, the teeth are meshingly connected with the force gear, and the outer side of the adjustment rod is sleeved with a tensioning spring, one end of the tensioning spring is fixed to the adjustment rod, and the other end of the tensioning spring is fixed to the placement box.

[0013] It can be seen without a doubt that the above-mentioned technical solution of the present application can definitely solve the technical problem to be solved by the present application.

[0014] At the same time, through the above technical solutions, the utility model has at least the following beneficial effects:

[0015] 1. The utility model uses the structural design of the dragging mechanism and the docking assembly to make the device easy to connect the front vehicle and the rear vehicle, and can form a stable triangle-like connection, thereby increasing the firmness of the connection, avoiding the twisting of the handlebar assembly of the rear vehicle, and improving the safety of the device.

[0016] 2. The utility model adopts the structural design of the traction rod, the connecting head, the trailer rod and the telescopic mechanism, so that the device can be folded and stored when not in use, saving space, and the position of the telescopic rod can be adjusted, so that the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the connection structure between the wheel axle and the rear vehicle of the utility model;

[0020] Figure 3 It is a schematic diagram of the connection structure of the connector and the fixed rib plate of the utility model;

[0021] Figure 4 It is a schematic cross-sectional structure diagram of the telescopic cylinder and the placement box of the utility model;

[0022] Figure 5 For this utility model Figure 4 Enlarged structural diagram at A in the middle.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] In the figure: 1, front vehicle; 2, rear vehicle; 3, traction rod; 4, connector; 5, trailer rod; 6, wheel axle; 7, fixed rib plate; 8, U-shaped fixing plate; 9, two-way threaded rod; 10, rotating shaft; 11, telescopic cylinder; 12, telescopic rod; 13, docking hole; 14, placement box; 15, rotating rod; 16, force gear; 17, adjustment rod; 18, teeth; 19, tension spring. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] Example 1

[0027] Reference Figure 1-3 A novel bicycle towing device comprises a front vehicle 1 and a rear vehicle 2 mounted at the rear of the front vehicle 1, a wheel axle 6 is arranged on the axis of the front wheel of the rear vehicle 2, a towing mechanism is arranged between the front vehicle 1 and the rear vehicle 2, the towing mechanism comprises a traction rod 3, a connector 4, a towing rod 5, a fixed rib plate 7 and a docking assembly, a support rod of a seat cushion of the front vehicle 1 is connected to the traction rod 3 through a universal joint, a connector 4 is fixed to one end of the traction rod 3, both sides of one end of the connector 4 are rotatably connected to the towing rod 5 through pins, the towing rod 5 is connected to the support rod of the seat cushion of the rear vehicle 2 through a universal joint, both sides of the bottom of the connector 4 are rotatably connected to the fixed rib plate 7 through pins, and the pins are used as pins for adjusting the tightness, so as to facilitate the adjustment of the tightness during storage, so as to make it more stable after storage. One end of the two fixed ribs 7 is equipped with a docking assembly. When not in use, the trailer rod 5 is rotated to be stored above the traction rod 3, and the fixed ribs 7 are rotated to be stored below the traction rod 3. The storage can be completed by tightening with a magic belt or rope. The universal joint is a prior art. For details, please refer to the universal joint in the prior art CN214874067U.

[0028] The docking assembly includes a U-shaped fixing plate 8, a two-way threaded rod 9, a rotating shaft 10, a telescopic cylinder 11, a telescopic rod 12 and a docking hole 13. A U-shaped fixing plate 8 is fixed to one end of the two fixing ribs 7. Two ends of the inner side of the U-shaped fixing plate 8 are rotatably connected to a two-way threaded rod 9. One end of the U-shaped fixing plate 8 is rotatably connected to the rotating shaft 10. One end of the rotating shaft 10 penetrates the U-shaped fixing plate 8 and is fixed to the two-way threaded rod 9. The two ends of the two-way threaded rod 9 have opposite threaded directions. Both ends of the outer side of the two-way threaded rod 9 are threadedly connected to the telescopic cylinder 11. The telescopic cylinder 11 is slidably connected to the inner side of the U-shaped fixing plate 8. One end of the telescopic cylinder 11 is equipped with a telescopic rod 12, and one end of the telescopic rod 12 is provided with a docking hole 13 corresponding to the position of the wheel axle 6, and the docking hole 13 is slidably connected to the wheel axle 6. When the front vehicle 1 needs to be separated from the rear vehicle 2, the universal joint is first loosened to separate the towing rod 5 from the connecting rod of the handlebar assembly of the rear vehicle 2, and then the rotating shaft 10 is rotated. The rotating shaft 10 drives the two-way threaded rod 9 to rotate, so that the two telescopic cylinders 11 drive the telescopic rod 12 to move in a direction away from each other until the docking hole 13 is separated from the wheel axle 6, and the separation of the front vehicle 1 and the rear vehicle 2 is completed.

[0029] A telescopic mechanism is installed between the telescopic cylinder 11 and the telescopic rod 12 , and the telescopic mechanism is used to adjust the position of the telescopic rod 12 .

[0030] The telescopic mechanism includes a placement box 14, a rotating rod 15 and a force gear 16. A placement box 14 is fixed on one side of the telescopic cylinder 11. A storage groove is provided on the inner side of the telescopic cylinder 11. The storage groove is slidably connected to the telescopic rod 12, and the storage groove is communicated with the placement box 14. A rotating rod 15 is rotatably connected to one side of the placement box 14. A force gear 16 is fixed on one end of the rotating rod 15. The force gear 16 is meshed and connected with the telescopic rod 12. A tooth groove is provided at the connection between the telescopic rod 12 and the force gear 16, and the tooth groove is meshed and connected with the force gear 16. When the front vehicle 1 is connected to the rear vehicle 2, the position of the telescopic rod 12 is first adjusted so that the docking hole 13 is aligned with the wheel axle 6. The specific method is to rotate the rotating rod 15 so that the rotating rod 15 drives the force gear 16 to mesh with the telescopic rod 12 and move, thereby causing the telescopic rod 12 to move along the inner side of the storage groove until the telescopic rod 12 drives the docking hole 13 to be aligned with the wheel axle 6.

[0031] Example 2

[0032] Embodiment 1 is further optimized, specifically, as Figure 3-5 As shown, the outer side of the placement box 14 is equipped with an adjustment mechanism.

[0033] The adjusting mechanism includes an adjusting rod 17, teeth 18 and a tensioning spring 19. The top of the placement box 14 is slidably connected with the adjusting rod 17, one end of the adjusting rod 17 is fixed with teeth 18, the teeth 18 are meshed and connected with the force gear 16, and the outer side of the adjusting rod 17 is sleeved with a tensioning spring 19, one end of the tensioning spring 19 is fixed to the adjusting rod 17, and the other end of the tensioning spring 19 is fixed to the placement box 14. When the force gear 16 needs to be rotated, the adjusting rod 17 is first pulled so that the adjusting rod 17 drives the tensioning spring 19 to stretch and deform, so that the adjusting rod 17 drives the teeth 18 to separate from the force gear 16, and the rotation limit of the force gear 16 is released. Then, the rotating rod 15 is rotated to drive the force gear 16 to rotate.

[0034] From the above, we can know that:

[0035] The utility model is aimed at the following technical problems: the prior art can achieve the purpose of towing the rear bicycle with the front bicycle during use, but it is only connected to the rear bicycle through a one-way telescopic tube group, and the U-shaped hoop and the universal joint are easily twisted during use because the connecting rod between the handlebar assembly of the rear bicycle and the U-shaped hoop is a rotating body, resulting in an unstable connection between the front and rear bicycles, and there is room for improvement; the technical solutions of the above embodiments are adopted. At the same time, the implementation process of the above technical solutions is:

[0036] When the front vehicle 1 needs to be connected with the rear vehicle 2, firstly, the towing rod 5 is connected with the connecting rod of the handlebar assembly of the rear vehicle 2 through the universal joint, and then the docking hole 13 is aligned with the wheel axle 6, and then the rotating shaft 10 is rotated, and the rotating shaft 10 drives the two-way threaded rod 9 to rotate. Because the threads at both ends of the two-way threaded rod 9 are rotated in opposite directions, the two-way threaded rod 9 is threadedly connected with the telescopic cylinder 11, and the telescopic cylinder 11 is slidably connected with the inner side of the U-shaped fixing plate 8, so that the two telescopic cylinders 11 can drive the telescopic rod 12 to move in a direction approaching each other until the docking hole 13 docks with the wheel axle 6, and the connection between the front vehicle 1 and the rear vehicle 2 is completed. At this time, the front wheel of the rear vehicle 2 is in a raised state and is not in contact with the ground.

[0037] Through the above configuration, the present application can certainly solve the above technical problems and achieve the following technical effects:

[0038] 1. The utility model uses the structural design of the dragging mechanism and the docking assembly to make the device easy to connect the front vehicle 1 and the rear vehicle 2, and can form a stable triangle-like connection, thereby increasing the firmness of the connection, avoiding twisting of the handlebar assembly of the rear vehicle 2, and improving the safety of the device.

[0039] 2. The utility model adopts the structural design of the traction rod 3, the connecting head 4, the trailer rod 5 and the telescopic mechanism, so that the device can be folded and stored when not in use to save space, and the position of the telescopic rod 12 can be adjusted, so that the use effect is good.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A novel bicycle towing device, characterized in that: The invention comprises a front vehicle (1) and a rear vehicle (2) mounted at the rear of the front vehicle (1), wherein the axis of the front wheel of the rear vehicle (2) is provided with a wheel axle (6), and a towing mechanism is mounted between the front vehicle (1) and the rear vehicle (2), wherein the towing mechanism comprises a traction rod (3), a connecting head (4), a trailer rod (5), a fixed rib plate (7) and a docking assembly, wherein the support rod of the seat cushion of the front vehicle (1) is connected to the traction rod (3) via a universal joint, a connecting head (4) is fixed to one end of the traction rod (3), both sides of one end of the connecting head (4) are rotatably connected to the trailer rod (5) via pins, and the trailer rod (5) is connected to the support rod of the seat cushion of the rear vehicle (2) via a universal joint, both sides of the bottom of the connecting head (4) are rotatably connected to the fixed rib plates (7) via pins, and one end of the two fixed rib plates (7) is equipped with a docking assembly.

2. A novel bicycle towing device according to claim 1, characterized in that: The docking assembly comprises a U-shaped fixing plate (8), a bidirectional threaded rod (9), a rotating shaft (10), a telescopic cylinder (11), a telescopic rod (12) and a docking hole (13); one end of the two fixing ribs (7) is fixed with a U-shaped fixing plate (8); two ends of the inner side of the U-shaped fixing plate (8) are rotatably connected to a bidirectional threaded rod (9); one end of the U-shaped fixing plate (8) is rotatably connected to a rotating shaft (10); one end of the rotating shaft (10) passes through the U-shaped fixing plate (8) and the bidirectional threaded rod (9). The threaded rod (9) is fixed, the threads at both ends of the bidirectional threaded rod (9) are in opposite directions, the two ends of the outer side of the bidirectional threaded rod (9) are connected to telescopic cylinders (11) through threads, the telescopic cylinders (11) are slidably connected to the inner side of the U-shaped fixing plate (8), one end of the telescopic cylinder (11) is equipped with a telescopic rod (12), one end of the telescopic rod (12) is provided with a docking hole (13) corresponding to the position of the wheel shaft (6), and the docking hole (13) is slidably connected to the wheel shaft (6).

3. A novel bicycle towing device according to claim 2, characterized in that: A telescopic mechanism is installed between the telescopic cylinder (11) and the telescopic rod (12), and the telescopic mechanism is used to adjust the position of the telescopic rod (12).

4. A novel bicycle towing device according to claim 3, characterized in that: The telescopic mechanism comprises a placement box (14), a rotating rod (15) and a force-applying gear (16); a placement box (14) is fixed on one side of the telescopic cylinder (11); a receiving groove is provided on the inner side of the telescopic cylinder (11); the receiving groove is slidably connected to the telescopic rod (12); the receiving groove is communicated with the placement box (14); a rotating rod (15) is rotatably connected to one side of the placement box (14); a force-applying gear (16) is fixed on one end of the rotating rod (15); and the force-applying gear (16) is meshingly connected to the telescopic rod (12).

5. A novel bicycle towing device according to claim 4, characterized in that: The outer side of the placement box (14) is equipped with an adjustment mechanism.

6. A novel bicycle towing device according to claim 5, characterized in that: The adjusting mechanism comprises an adjusting rod (17), teeth (18) and a tension spring (19); the top of the placement box (14) is slidably connected with the adjusting rod (17); one end of the adjusting rod (17) is fixed with teeth (18); the teeth (18) are meshingly connected with the force-applying gear (16); the outer side of the adjusting rod (17) is sleeved with a tension spring (19); one end of the tension spring (19) is fixed with the adjusting rod (17); and the other end of the tension spring (19) is fixed with the placement box (14).

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