A rear wheel storage mechanism for a folding bicycle

Abstract

The utility model relates to a rear wheel storage mechanism of folding bicycle, including main frame and the rear fork frame that can rotate between unfolding position and folding position by the pivot rotation in the rear end of main frame, the rear fork frame is equipped with rear wheel, the bottom of main frame is recessed and forms the hollow chamber that penetrates along the height direction, the cavity wall of hollow chamber two sides is recessed further and forms the mounting slot that penetrates main frame outside with main frame top end, the mounting slot is rotatably provided with the cover, the cover can constitute the complete main frame outside contour after embedding with mounting slot, when the rear fork frame is in folding position, the rear wheel is stored in the hollow chamber of main frame and its rear wheel both ends are positioned with the cavity wall of both sides of hollow chamber, and the part of rear wheel that ejects the cover protrudes in the height range of mounting slot. This embodiment can effectively shorten the longitudinal length of whole frame when the rear fork frame is folded, and the convenience of use can be improved.

Description

Technical Field

[0001] This utility model relates to the field of folding bicycle technology, and in particular to a rear wheel storage mechanism for a folding bicycle. Background Technology

[0002] Existing folding bicycles typically connect the rear fork to the main frame via a pivot. Pushing the rear fork causes the rear wheel to rotate around the pivot, bringing it close to the underside of the main frame, thus folding the rear wheel and frame together for storage, further reducing size and meeting users' portability requirements. However, the inventors discovered in practice that in existing folding structures, the fit between the rear wheel and frame is not ideal, and noticeable protrusions remain after folding, preventing the bicycle from forming a neat and orderly storage shape. This is especially true for electric folding bicycles, where the longitudinal length remains relatively large after folding, making it difficult for users to fit into small storage spaces such as car trunks, resulting in significant inconvenience. Utility Model Content

[0003] Therefore, it is necessary to provide a rear wheel storage mechanism for folding bicycles that can effectively shorten the longitudinal length of the overall frame when the rear fork is folded, making it convenient for daily use and storage, and improving ease of use.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A rear wheel storage mechanism for a folding bicycle includes a main frame and a rear fork that is pivotally rotated at the rear end of the main frame and can rotate between an unfolded position and a folded position. The rear fork is equipped with a rear wheel. The bottom of the main frame is recessed inward to form a hollow cavity that extends through the height direction. The cavity walls on both sides of the hollow cavity are further recessed towards the top of the main frame to form a mounting groove that extends through the outside of the main frame. A cover plate is rotatably connected to one side wall of the mounting groove. The cover plate and the mounting groove are fitted together to form a complete outer contour of the main frame. When the rear fork is in the folded position, the rear wheel is stored in the hollow cavity of the main frame and its two ends are positioned with the two side walls of the hollow cavity. The portion of the rear wheel that pushes out of the cover plate protrudes within the height range of the mounting groove.

[0005] Furthermore, the mechanism also includes a plug rod, a through hole is provided vertically at the rear end of the main frame, and a positioning hole is provided on the rear fork; when the rear fork is rotated to the folded position, the plug rod passes through the through hole and the positioning hole to limit the rear wheel of the rear fork to be positioned on the main frame.

[0006] Furthermore, one end of the cover plate is rotatably mounted in a pre-set pivot hole within the mounting groove via a connecting shaft.

[0007] Furthermore, the cover plate is made of magnetic material, and a number of mounting holes are provided at the other end of the connecting shaft in the mounting groove. Each mounting hole is provided with a magnetic stone for adsorbing the cover plate so that it covers the mounting groove.

[0008] Furthermore, the sidewall of the cover plate is provided with multiple reinforcing ribs along the vertical direction. Furthermore, a fork is provided at the rear bottom of the main frame, the fork having two parallel fork arms, the rear fork being correspondingly located within the fork, and the pivot penetrating the rear fork and pivotally connected at both ends to the ends of a corresponding fork arm.

[0009] Furthermore, the outer surface of the fork of the main frame is provided with a transition arc surface, and the rear fork is provided with an arc groove that matches the transition arc surface at the corresponding position of the transition arc surface.

[0010] Furthermore, the main frame is L-shaped and includes a horizontal bar section and a vertical bar section. The sliding seat is integrally formed on the vertical bar section. The mounting groove and cover plate are provided on the horizontal bar section. The hollow cavity is provided at the bottom of the horizontal bar section, and the hollow cavity is a cavity with a bottom opening and the opening size gradually decreases towards the top.

[0011] Furthermore, the two side walls of the hollow cavity are formed with arc transition surfaces that are adapted to the outer contour of the rear wheel.

[0012] Furthermore, both the main frame and the rear fork are made of carbon fiber material and are integrally blow-molded using a mold.

[0013] By adopting the above technical solution, the present invention has at least the following beneficial effects: The rear wheel storage mechanism of this invention, through a hollow cavity extending along the length of the bottom of the main frame, and with the cooperation of mounting slots and cover plates on both sides of the cavity walls, allows the rear wheel to be stored within the hollow cavity when the rear fork folds, and its ends are positioned by the cavity walls on both sides. Furthermore, at this time, the rear wheel pushes out of the cover plate and partially protrudes from the main frame, effectively shortening the longitudinal length of the overall frame after folding. When the rear fork is in the unfolded state, the cover plate can be flipped back to its original position and engaged with the mounting slots, without affecting the riding experience. Thus, it meets the storage needs of electric folding bicycles, making it convenient to place in small spaces such as car trunks and subway luggage racks, facilitating daily carrying and storage, and improving usability. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a perspective view of the unfolded state of an optional embodiment of the rear wheel storage mechanism of the folding bicycle of this utility model.

[0016] Figure 2 This is a perspective view of the folded state of an optional embodiment of the rear wheel storage mechanism of the folding bicycle of this utility model.

[0017] Figure 3 This is a cross-sectional schematic diagram of the folded state of an optional embodiment of the rear wheel storage mechanism of the folding bicycle of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the rear fork connecting to the fork of the main frame, which is an optional embodiment of the rear wheel storage mechanism of the folding bicycle of this utility model.

[0019] In the attached diagram, 1 is the main frame; 101 is the arc transition surface; 1a is the crossbar section; 1b is the vertical bar section; 10 is the hollow cavity; 11 is the mounting groove; 111 is the mounting hole; 112 is the magnet; 12 is the cover plate; 121 is the reinforcing rib; 13 is the through hole; 15 is the fork; 151 is the fork arm; 152 is the transition arc surface; 2 is the pivot; 3 is the rear fork; 30 is the rear wheel; 31 is the positioning hole; 32 is the arc groove; and 4 is the insert rod. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0021] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0022] like Figures 1-4As shown, an optional embodiment of this utility model provides a rear wheel 30 storage mechanism for a folding bicycle, including a main frame 1 and a rear fork 315 that rotates at the rear end of the main frame 1 via a pivot 2 and can rotate between an unfolded position and a folded position. The rear fork 315 is equipped with a rear wheel 30. The bottom of the main frame 1 is recessed inward to form a hollow cavity 10 that extends through the height direction. The cavity walls on both sides of the hollow cavity 10 are further recessed towards the top of the main frame 1 to form a mounting groove 11 that extends through the outside of the main frame 1. A cover plate 12 is rotatably connected to one side wall of the mounting groove 11. The cover plate 12 and the mounting groove 11 fit together to form a complete outer contour of the main frame 1. When the rear fork 315 is in the folded position, the rear wheel 30 is stored in the hollow cavity 10 of the main frame 1, and both ends of the rear wheel 30 are positioned with the two side walls of the hollow cavity 10. The portion of the rear wheel 30 that pushes out of the cover plate 12 protrudes within the height range of the mounting groove 11.

[0023] The rear wheel 30 storage mechanism of this utility model embodiment has a hollow cavity 10 extending through the height direction at the bottom of the main frame 1. With the cooperation of mounting grooves 11 and cover plates 12 on both sides of the cavity walls, when the rear fork 315 drives the rear wheel 30 to fold, the rear wheel 30 can be stored in the hollow cavity 10 and positioned at both ends by the cavity walls. Furthermore, at this time, the rear wheel 30 pushes out of the cover plate 12 and partially protrudes from the main frame 1, effectively shortening the longitudinal length of the overall frame after folding. When the rear fork 315 is in the unfolded state, the cover plate 12 can be flipped back to its original position and engage with the mounting grooves 11, without affecting the riding experience. Thus, it meets the storage needs of electric folding bicycles, making it convenient to put into small spaces such as car trunks and subway luggage racks, facilitating daily carrying and storage, and improving usability.

[0024] In one optional embodiment of this utility model, such as Figures 1-4 As shown, the mechanism also includes a rod 4. A through hole 13 is vertically formed at the rear end of the main frame 1, and a positioning hole 31 is formed in the rear fork 315. When the rear fork 315 rotates to the folded position, the rod 4 passes through the through hole 13 and the positioning hole 31 to limit the rear wheel 30 of the rear fork 315 to the main frame 1. In this embodiment, by providing a vertical through hole 13 at the rear end of the main frame 1 and a positioning hole 31 at the corresponding position of the rear fork 315, when the rear fork 315 drives the rear wheel 30 to fold into the hollow cavity 10, the rod 4 passes through the through hole 13 and the positioning hole 31, preventing the rear fork 315 from rotating in the folded state and facilitating the fixation of the folded rear wheel 30. In practical applications, the rod 4 can be reused as a rod with a seat cushion on top. The rod is axially positioned by a clamp on its outer surface, and the longitudinal height of the vehicle is simultaneously shortened by inserting the rod into the through hole 13 and the positioning hole 31.

[0025] In one optional embodiment of this utility model, such as Figures 1-4 As shown, one end of the cover plate 12 is pivotally connected to a pre-set pivot hole in the mounting groove 11 via a connecting shaft. In this embodiment, when the rear fork 315 drives the rear wheel 30 to fold and push the cover plate 12, the cover plate 12 can flip along the pivot point to avoid interfering with the process of the rear wheel 30 being inserted into the hollow cavity 10, ensuring a smooth process of retracting the rear wheel 30. In a specific implementation, the cover plate 12 can also be rotatably connected to the mounting groove 11 by setting connecting protrusions at both ends and having the corresponding connecting protrusion at one end engage with a pre-set hole in the mounting groove 11.

[0026] In one optional embodiment of this utility model, such as Figures 1-4 As shown, the cover plate 12 is made of magnetic material. Several mounting holes 111 are provided in the mounting groove 11 at the other end corresponding to the connecting shaft. Each mounting hole 111 contains a magnetic stone 112 for adsorbing the cover plate 12 and fitting it into the mounting groove 11. In this embodiment, by using a magnetic material for the cover plate 12 and providing mounting holes 111 and magnetic stones 112 at the other end corresponding to the connecting shaft in the mounting groove 11, the cover plate 12 can be magnetically attracted and positioned in the mounting groove 11 after being flipped and reset, thus facilitating the fitting of the cover plate 12 with the mounting groove 11.

[0027] In one optional embodiment of this utility model, such as Figures 1-4 As shown, the sidewall of the cover plate 12 is provided with a plurality of reinforcing ribs 121 along the vertical direction. In this embodiment, by providing a plurality of reinforcing ribs 121 along the vertical direction of the sidewall of the cover plate 12, the deformation resistance and load-bearing strength of the cover plate 12 can be improved, thereby enhancing the stability and durability of the storage mechanism.

[0028] In one optional embodiment of this utility model, such as Figures 1-4 As shown, a fork 15 is provided at the rear bottom of the main frame 1. The fork 15 has two parallel fork arms 151. The rear fork 315 is correspondingly disposed within the fork 15. The pivot 2 passes through the rear fork 315 and its two ends are respectively pivotally connected to the ends of the corresponding fork arms 151. In this embodiment, by providing a fork 15 at the rear bottom of the main frame 1, with the rear fork 315 correspondingly disposed within the fork 15, and the pivot 2 passing through the rear fork 315 and then pivotally connected at both ends to the two fork arms 151 of the fork 15, the rear fork 315 can rotate more stably relative to the main frame 1. It can be understood that a fork 15 can also be formed on the rear fork 315, with one end of the main frame 1 disposed on the fork 15, which can also pivotally connect the rear fork 315 to the main frame 1.

[0029] In one optional embodiment of this utility model, such as Figures 1-4As shown, the outer surface of the fork 15 of the main frame 1 is provided with a transition arc surface 152, and the rear fork 315 is provided with an arc groove 32 that matches the transition arc surface 152 at the corresponding position. In this embodiment, by providing a transition arc surface 152 on the outer surface of the fork 15 of the main frame 1 and providing a matching arc groove 32 at the corresponding position of the rear fork 315, the arc groove 32 and the transition arc surface 152 can maintain a sliding fit during the rotation of the rear fork 315 during unfolding and folding, thereby improving the smoothness of the rotation.

[0030] In one optional embodiment of this utility model, such as Figures 1-4 As shown, the main frame 1 is L-shaped and includes a horizontal bar section 1a and a vertical bar section 1b. The sliding seat is integrally formed on the vertical bar section 1b. The mounting groove 11 and the cover plate 12 are provided on the horizontal bar section 1a. The hollow cavity 10 is located at the bottom of the horizontal bar section 1a, and the hollow cavity 10 is a cavity with an opening at the bottom and a gradually decreasing opening size towards the top. In this embodiment, the above structure is integrally formed on the horizontal bar section 1a and the vertical bar section 1b of the main frame 1, and the opening of the hollow cavity 10, which is wider at the bottom and narrower at the top, forms a guide structure for the rear wheel 30, making the overall vehicle layout more reasonable and compact.

[0031] In one optional embodiment of this utility model, such as Figures 1-4 As shown, the two side walls of the hollow cavity 10 are formed with arc transition surfaces 101 that are adapted to the outer contour of the rear wheel 30. In this embodiment, by forming arc transition surfaces 101 on the two side walls of the hollow cavity 10 that are adapted to the outer contour of the rear wheel 30, the gap between the rear wheel 30 and the cavity wall can be reduced, thus preventing the rear wheel 30 from swaying or shifting left and right in the cavity after folding.

[0032] In one optional embodiment of this utility model, such as Figures 1-4 As shown, both the main frame 1 and the rear fork 315 are made of carbon fiber material and integrally blow-molded using a mold. This embodiment, by using carbon fiber material and combining it with an integral blow-molding process to manufacture the main frame 1 and rear fork 315, reduces the overall weight of the main frame 1 and rear fork 315, further improving the portability of the folding bicycle.

[0033] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A folding bicycle rear wheel stowing mechanism, characterized by, The bicycle includes a main frame and a rear fork that pivots at the rear end of the main frame and can rotate between an unfolded and folded position. The rear fork is fitted with a rear wheel. The bottom of the main frame is recessed inward to form a hollow cavity that extends through the height direction. The cavity walls on both sides of the hollow cavity are further recessed towards the top of the main frame to form a mounting groove that extends through the outside of the main frame. A cover plate is rotatably connected to one side wall of the mounting groove. When the cover plate is fitted into the mounting groove, it forms a complete outer contour of the main frame. When the rear fork is in the folded position, the rear wheel is housed in the hollow cavity of the main frame, and its two ends are positioned with the two side walls of the hollow cavity. The portion of the rear wheel that protrudes from the cover plate extends beyond the height range of the mounting groove.

2. The folding bicycle rear wheel housing mechanism according to claim 1, wherein The mechanism also includes a plug rod, a through hole is provided vertically at the rear end of the main frame, and a positioning hole is provided on the rear fork; when the rear fork is rotated to the folded position, the plug rod passes through the through hole and the positioning hole to limit the rear wheel of the rear fork to be positioned on the main frame.

3. The folding bicycle rear wheel housing mechanism according to claim 1, wherein One end of the cover plate is pivotally connected to a pre-set pivot hole in the mounting groove via a connecting shaft.

4. The folding bicycle rear wheel housing mechanism according to claim 3, wherein The cover plate is made of magnetic material. Several mounting holes are provided at the other end of the connecting shaft in the mounting groove. Each mounting hole is provided with a magnetic stone for adsorbing the cover plate so that it covers the mounting groove.

5. The folding bicycle rear wheel housing mechanism according to claim 1 or 4, wherein The sidewall of the cover plate is provided with multiple reinforcing ribs along the vertical direction.

6. The folding bicycle rear wheel housing mechanism according to claim 1, wherein, The rear end of the main frame is provided with a fork carriage, which has two parallel fork arms. The rear fork carriage is correspondingly located within the fork carriage. The pivot passes through the rear fork carriage and is pivotally connected at both ends to the ends of the corresponding fork arms.

7. The folding bicycle rear wheel housing mechanism according to claim 6, wherein The outer surface of the fork of the main frame is provided with a transition arc surface, and the rear fork is provided with an arc groove that matches the transition arc surface at the corresponding position.

8. The folding bicycle rear wheel housing mechanism according to claim 6, wherein, The main frame is L-shaped and includes a crossbar section and a vertical bar section. The fork is integrally formed on the vertical bar section. The mounting groove and cover plate are provided on the crossbar section. The hollow cavity is provided at the bottom of the crossbar section and is a cavity with a bottom opening and the opening size gradually decreases towards the top.

9. The folding bicycle rear wheel housing mechanism according to claim 1, wherein, The two side walls of the hollow cavity are formed with arc transition surfaces that are adapted to the outer contour of the rear wheel.

10. The rear wheel storage mechanism of the folding bicycle according to claim 1, characterized in that, Both the main frame and the rear fork are made of carbon fiber material and are integrally blow-molded using a mold.

Images