Foldable auxiliary wheel

Abstract

The application relates to the field of baby carriages, in particular to a foldable auxiliary wheel which comprises a mounting frame used for mounting on a carriage body, a connecting frame, the middle part of which is hinged to the mounting frame through a hinge rod, both ends of the connecting frame being free ends, a wheel body which is rotationally connected to one end of the connecting frame away from the mounting frame, a limiting piece arranged on the mounting frame and used for limiting the rotation angle of the connecting frame, a supporting piece arranged on the mounting frame and used for supporting one end of the connecting frame close to the mounting frame, a clearance hole arranged on the connecting frame and used for moving the one end of the connecting frame close to the mounting frame from the upper end of the supporting piece to the lower end of the supporting piece by moving the connecting frame, a connecting rod which is arranged on the connecting frame, and a tension spring which is respectively hooked on the hinge rod and the connecting rod. The auxiliary wheel realizes folding of the wheel body, and the wheel body can be folded up when not used, without the need of disassembling the whole auxiliary wheel as required in the prior art, so that the application is simple, practical, convenient, efficient, time-saving and labor-saving.

Description

Technical Field

[0001] This application relates to the field of children's vehicles, and in particular to a foldable auxiliary wheel. Background Technology

[0002] Children's vehicles are transportation and entertainment tools designed specifically for children, such as children's bicycles. Children's bicycles usually have training wheels to make it easier for children to ride when they first learn. Traditional children's bicycle training wheels usually cannot be folded well, which means that when children learn to ride, they need to remove the bicycle, which is not only cumbersome but also time-consuming and laborious. Utility Model Content

[0003] To address the aforementioned technical problems, this application provides a foldable auxiliary wheel, which aims to provide an auxiliary wheel that can be folded and applied to children's bicycles.

[0004] This application provides a foldable auxiliary wheel, which adopts the following technical solution:

[0005] A foldable auxiliary wheel includes:

[0006] Mounting bracket, used for mounting on the vehicle body;

[0007] The connecting frame, with its middle section hinged to the mounting frame via a hinge rod;

[0008] The wheel body is rotatably connected to the end of the connecting frame away from the mounting frame;

[0009] A limiting component, located on the mounting bracket, is used to limit the rotation angle of the connecting bracket to adjust the position of the wheel body;

[0010] A support component, mounted on the mounting bracket, is used to support the end of the connecting bracket near the mounting bracket.

[0011] A clearance hole is provided on the connecting bracket to allow the connecting bracket to move from the upper end of the support to the lower end of the support by moving the connecting bracket.

[0012] Connecting rods, passing through the connecting frame; and

[0013] The tension spring has its two ends hooked onto the hinge rod and the connecting rod, respectively, to prevent relative sliding between the hinge rod and the clearance hole;

[0014] The hinge rod passes through the clearance hole.

[0015] Preferably, the mounting frame includes a vertical plate and two side plates, with the two side plates located on opposite sides of the vertical plate, and the connecting frame located between the two side plates.

[0016] Preferably, the connecting frame includes an inclined plate and an auxiliary wheel plate fixedly connected to the inclined plate. The inclined plate is connected to the mounting frame via a hinge rod, and the clearance hole is opened on the inclined plate. The auxiliary wheel plate is located at the end of the inclined plate away from the mounting frame, and the auxiliary wheel plate is rotatably connected to the wheel body.

[0017] Preferably, the wheel body includes a wheel body and a connecting shaft, the connecting shaft passes through the wheel body and the connecting frame, and the wheel body is rotatably connected to the connecting frame through the connecting shaft.

[0018] Preferably, it further includes a snap-fit ​​element and a snap-fit ​​groove. The snap-fit ​​element is disposed on the mounting frame and located below the hinge rod. The snap-fit ​​groove is formed on the connecting frame and snaps onto the snap-fit ​​element.

[0019] Preferably, the clearance hole is an oblong hole.

[0020] In summary, this application includes the following beneficial technical effects:

[0021] 1. The auxiliary wheel in this application realizes the folding of the wheel body. When the wheel body is not in use, it can be folded up without having to disassemble the entire auxiliary wheel as in the traditional method. It is simple, practical, easy to operate, efficient and convenient, and saves time and effort.

[0022] 2. By setting up a snap-fit ​​component and a snap-fit ​​groove, this application enables the connecting frame to be fixed by snapping the snap-fit ​​groove and the snap-fit ​​component after the wheel body is folded, thereby improving the stability of the wheel body after folding. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the deployed state of the auxiliary wheel in an embodiment of this application.

[0024] Figure 2 This is a partially cutaway structural diagram of the auxiliary wheel in the unfolded state in an embodiment of this application.

[0025] Figure 3 This is a schematic diagram of the folded state of the auxiliary wheel in an embodiment of this application.

[0026] Explanation of reference numerals in the attached drawings: 11. Mounting bracket; 111. Vertical plate; 112. Side plate; 12. Connecting bracket; 121. Inclined plate; 122. Auxiliary wheel plate; 13. Hinge rod; 14. Wheel body; 141. Wheel body; 142. Connecting shaft; 15. Limiting component; 16. Support component; 17. Clearance hole; 18. Connecting rod; 19. Tension spring; 20. Snap-fit ​​component; 21. Snap-fit ​​groove. Detailed Implementation

[0027] The present application will be further described in detail below with reference to the accompanying drawings.

[0028] This application discloses a foldable auxiliary wheel.

[0029] Reference Figure 1 and Figure 2 The auxiliary wheel is used to install onto the rear wheel axle of the vehicle body and is locked in place by screws on the rear wheel axle. Specifically, the auxiliary wheel includes a mounting bracket 11, a connecting bracket 12, a hinge rod 13, a wheel body 14, a limiting member 15, a support member 16, a clearance hole 17, a connecting rod 18, and a tension spring 19.

[0030] Reference Figure 1 and Figure 2 The mounting bracket 11 serves as the mounting carrier for the auxiliary wheel. The upper part of the mounting bracket 11 has an oblong hole, through which it is fitted onto the rear wheel axle on the vehicle body, and the mounting bracket 11 is locked and fixed by the screws on the rear wheel axle.

[0031] Specifically, the mounting bracket 11 includes a vertical plate 111 and two side plates 112. An oblong hole is opened on the upper part of the vertical plate 111, and the two side plates 112 are located on both sides of the vertical plate 111 respectively, and the two side plates 112 are arranged in parallel.

[0032] Reference Figure 1 and Figure 2 The middle part of the connecting frame 12 is hinged to the mounting frame 11 via the hinge rod 13. Both ends of the connecting frame 12 are free ends. The connecting frame 12 is located between the two side plates 112, and there is a certain gap between both sides of the connecting frame 12 and the side plates 112. The connecting frame 12 serves as the carrier for connecting the wheel body 14 to the mounting frame 11, and the wheel body 14 can be folded through the connecting frame 12.

[0033] Specifically, the connecting frame 12 includes an inclined plate 121 and an auxiliary wheel plate 122. The inclined plate 121 is U-shaped, and the middle part of the inclined plate 121 is connected to the two side plates 112 through a hinge rod 13. The auxiliary wheel plate 122 is fixedly connected to the inclined plate 121, and the auxiliary wheel plate 122 is located on the end of the inclined plate 121 away from the vertical plate 111. The auxiliary wheel plate 122 serves as a carrier for mounting the wheel body 14.

[0034] Reference Figure 1 and Figure 2 The wheel body 14 is mounted on the auxiliary wheel plate 122 and is rotatably connected to the auxiliary wheel plate 122. Specifically, the wheel body 14 includes a wheel body 141 and a connecting shaft 142. During installation, the connecting shaft 142 passes through the wheel body 141 and the auxiliary wheel plate 122, and the two ends of the connecting shaft 142 connect the wheel body 141 and the auxiliary wheel plate 122, so as to realize the rotatable connection between the wheel body 14 and the auxiliary wheel plate 122 through the connecting shaft 142.

[0035] The limiting component 15 is installed and fixed on the vertical plate 111 of the mounting frame 11. The limiting component 15 is located above the connecting frame 12. The limiting component 15 can be a limiting plate, a limiting rod, a limiting block, etc.

[0036] Specifically, the limiting member 15 is located directly above the free end of the inclined plate 121 near the vertical plate 111. The limiting member 15 is used to limit the rotation angle of the inclined plate 121 by limiting the free end of the inclined plate 121 near the vertical plate 111, thereby achieving the purpose of adjusting the angle and position of the wheel 14. Specifically, the position of the limiting member 15 is a special position. When the inclined plate 121 abuts against the limiting member 15, the wheel 14 is parallel to the rear wheel of the vehicle body, so that the wheel 14 can roll forward together with the rear wheel of the vehicle body.

[0037] Reference Figure 1 and Figure 2 The support member 16 is detachably connected and fixed to the vertical plate 111. The detachable connection includes, but is not limited to, plug-in, snap-fit ​​or threaded connection. The support member 16 is located below the limiting member 15. The support member 16 is used to support one end of the mounting bracket 11 of the connecting bracket 12. The support member 16 can be a support screw, support rod or support clip.

[0038] Specifically, when the auxiliary wheel is in the deployed state and needs to move along with the rear wheel of the vehicle, the ramp 121 is located between the limiting member 15 and the support member 16. Since the wheel 14 is on the ground, the wheel 14 rotates under force, and the ramp 121 and the hinge rod 13 form a "lever". Therefore, the support member 16 is needed to support the free end of the ramp 121 near the vertical plate 111 so that the wheel 14 can move in a state parallel to the rear wheel of the vehicle.

[0039] Reference Figure 2 and Figure 3 The clearance hole 17 is opened on the inclined plate 121 of the connecting frame 12. The clearance hole 17 is an oblong hole. The hinge rod 13 passes through the clearance hole 17 to connect the side plate 112 and the inclined plate 121. The clearance hole 17 is used to realize the folding of the connecting frame 12 and the wheel body 14. Specifically, by moving the connecting frame 12, the clearance hole 17 is moved relative to the hinge rod 13 so that the free end of the inclined plate 121 near the vertical plate 111 moves past the support member 16 to the lower end of the support member 16.

[0040] The connecting rod 18 is fixed to the inclined plate 121 of the connecting frame 12, and the connecting rod 18 is located between the hinge rod 13 and the auxiliary wheel plate 122.

[0041] The two ends of the tension spring 19 are hooked onto the hinge rod 13 and the connecting rod 18, respectively. The tension spring 19 is used to provide tension to the inclined plate 121. When the wheel 14 moves forward together with the rear wheel of the vehicle body, it is used to prevent the hinge rod 13 from sliding relative to the relief hole 17, so that the side of the relief hole 17 near the wheel 14 continuously abuts against the hinge rod 13 under the tension of the tension spring 19.

[0042] Furthermore, referring to Figure 2 and Figure 3 The auxiliary wheel also includes a snap-fit ​​component 20 and a snap-fit ​​groove 21. The snap-fit ​​component 20 is inserted through the two side plates 112 of the mounting frame 11 and is located below the hinge rod 13. The snap-fit ​​component 20 is parallel to the hinge rod 13. The snap-fit ​​groove 21 is opened on the free end of the inclined plate 121 near the vertical plate 111. When the inclined plate 121 moves past the support member 16 and moves to the bottom of the support member 16, the snap-fit ​​groove 21 can be snapped onto the snap-fit ​​component 20 to fix the connecting frame 12 and the wheel body 14 and complete the folding of the connecting frame 12 and the wheel body 14.

[0043] Among them, the hinge rod 13, the connecting rod 18 and the snap-fit ​​part 20 can all be fixed with locking screws.

[0044] Specifically, the auxiliary wheel has two states: an unfolded state and a folded state. The implementation process of these two states is given below:

[0045] When the auxiliary wheel is in the unfolded state, the inclined plate 121 is located between the limiting member 15 and the support member 16. When it moves along with the rear wheel of the vehicle body, the inclined plate 121 is supported on the support member 16, and the wheel body 14 and the rear wheel of the vehicle body are as parallel as possible.

[0046] When the auxiliary wheel transitions from the unfolded state to the folded state, the user pulls the wheel body 14 or the connecting frame 12 to move the clearance hole 17 relative to the hinge rod 13. When the edge of the inclined plate 121 passes the support member 16, the inclined plate 121 is rotated from above the support member 16 to below the support member 16. The inclined plate 121 is rotated until the edge of the inclined plate 121 is near the snap fastener 20. Then the user pulls the connecting frame 12 or the wheel body 14 so that the slot on the inclined plate 121 can snap onto the snap fastener 20, thus completing the folding of the auxiliary wheel.

[0047] When the auxiliary wheel is in a folded state, the snap-fit ​​groove 21 snaps into the snap-fit ​​piece 20, the connecting frame 12 and the wheel body 14 are raised, and they are folded relative to the mounting frame 11.

[0048] When the auxiliary wheel transitions from a folded state to an unfolded state, the user pulls the wheel body 14 or the connecting bracket 12 to move the clearance hole 17 relative to the hinge rod 13 until the locking groove 21 can disengage from the locking member 20. Then, the user rotates the inclined plate 121 to below the support member 16. Then, the user pulls the connecting bracket 12 or the wheel body 14. When the edge of the inclined plate 121 passes the support member 16, the user rotates the inclined plate 121 from below the support member 16 to above the support member 16. Then, the edge of the inclined plate 121 extends into the area between the limiting member 15 and the support member 16, completing the unfolding of the auxiliary wheel.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A foldable auxiliary wheel, characterized in that, include: Mounting bracket (11) is used for mounting on the vehicle body; The connecting frame (12) is hinged to the mounting frame (11) in the middle part by a hinge rod (13); The wheel body (14) is rotatably connected to the end of the connecting frame (12) away from the mounting frame (11); A limiting member (15) is provided on the mounting bracket (11) to limit the rotation angle of the connecting bracket (12) to adjust the position of the wheel body (14); A support member (16) is provided on the mounting frame (11) for supporting one end of the connecting frame (12) near the mounting frame (11); A clearance hole (17) is provided on the connecting frame (12) for moving one end of the connecting frame (12) close to the mounting frame (11) from the upper end of the support member (16) to the lower end of the support member (16) by moving the connecting frame (12); Connecting rod (18), passing through connecting frame (12); and A tension spring (19) is hooked at both ends onto the hinge rod (13) and the connecting rod (18) respectively, to prevent the hinge rod (13) and the clearance hole (17) from sliding relative to each other; The hinge rod (13) is inserted into the relief hole (17).

2. The foldable auxiliary wheel according to claim 1, characterized in that, The mounting bracket (11) includes a vertical plate (111) and two side plates (112), with the two side plates (112) located on both sides of the vertical plate (111) and the connecting bracket (12) located between the two side plates (112).

3. A foldable auxiliary wheel according to claim 1, characterized in that, The connecting frame (12) includes an inclined plate (121) and an auxiliary wheel plate (122) fixedly connected to the inclined plate (121). The inclined plate (121) is connected to the mounting frame (11) through a hinge rod (13), and the clearance hole (17) is opened on the inclined plate (121). The auxiliary wheel plate (122) is located at the end of the inclined plate (121) away from the mounting frame (11), and the auxiliary wheel plate (122) is rotatably connected to the wheel body (14).

4. A foldable auxiliary wheel according to claim 1, characterized in that, The wheel body (14) includes a wheel body (141) and a connecting shaft (142). The connecting shaft (142) passes through the wheel body (141) and the connecting frame (12). The wheel body (14) is rotatably connected to the connecting frame (12) through the connecting shaft (142).

5. A foldable auxiliary wheel according to claim 1, characterized in that, It also includes a snap-fit ​​component (20) and a snap-fit ​​groove (21). The snap-fit ​​component (20) is disposed on the mounting bracket (11) and located below the hinge rod (13). The snap-fit ​​groove (21) is opened on the connecting bracket (12) and snaps onto the snap-fit ​​component (20).

6. A foldable auxiliary wheel according to claim 1, characterized in that, The clearance hole (17) is an oblong hole.

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