Folding monocycle
By introducing a folding mechanism and linkage structure into the single-leg bicycle, efficient folding of the single-leg bicycle is achieved, solving the problems of large size and inconvenience of traditional single-leg bicycles, and providing structural stability and convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN YOUYING SPORTS TECH CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-04-28
AI Technical Summary
Traditional single-leg bicycles have a fixed, one-piece structure, making them bulky and inconvenient to store and carry. Existing folding structures have simple folding methods, but they are still quite bulky when folded.
The front and rear wheel brackets are connected by a folding mechanism. The folding of the single-leg bicycle is achieved by the hinged movement of the upper and lower links. The lower link can be partially or completely stored in the rear wheel bracket. Combined with the design of the hinge seat and the movable cavity, the folding process is stable and compact.
Significantly reduces the size of the single-legged bicycle, making it easy to store and carry. The folding process is simple and convenient, and the structural stability and force transmission path are clear, improving the convenience and safety of use.
Smart Images
Figure CN224171100U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of single-leg bicycle technology, specifically a folding single-leg bicycle. Background Technology
[0002] A single-leg bike, also known as a walking aid or locomotive, is a mobility aid specifically designed for people with leg or foot disabilities. It is suitable for amputees, those with limps, and other similar conditions. Traditional single-leg bikes typically have wheels, a frame, and a platform or footrest for the user to kneel on. Users push off with their unaffected leg, effectively avoiding weight-bearing on the injured area and providing a more stable and effortless mobility experience than crutches. However, most single-leg bikes on the market are one-piece, fixed structures without folding capabilities. This makes them bulky when not in use, hindering convenient storage and transport. To address this issue, some single-leg bikes incorporate folding mechanisms, but these folding methods are often quite simple, merely folding down the control lever. While this reduces the bike's height to some extent, the rest of the main structure remains fixed, resulting in minimal change to the overall length and width. Consequently, the folded size is still relatively large, making it inconvenient to fit in a car trunk or home storage cabinet, indicating poor storage performance. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a folding single-leg bicycle with a simple structure, low manufacturing cost, efficient folding, significantly reduced single-leg size, easy and convenient folding operation, and easy storage and carrying.
[0004] The purpose of this utility model is achieved in the following way: a folding single-leg bicycle, which includes a front wheel bracket and a rear wheel bracket, wherein the front wheel bracket and the rear wheel bracket are connected by a folding mechanism, the folding mechanism includes a mounting seat installed above the front wheel bracket, an upper connecting rod hinged above the mounting seat, a lower connecting rod hinged below the mounting seat, and the upper connecting rod extending rearward and hinged to the rear wheel bracket;
[0005] The lower connecting rod extends into the rear wheel bracket and is hinged to the rear wheel bracket.
[0006] The mounting base is provided with an upper hinge seat and a lower hinge seat on one side. One end of the upper connecting rod is hinged to the upper hinge seat, and one end of the lower connecting rod is hinged to the lower hinge seat.
[0007] The rear wheel bracket is provided with two connecting plates, and a movable cavity is formed between the two connecting plates. The lower connecting rod extends into and is clamped in the movable cavity; the other end of the lower connecting rod is hinged to the movable cavity.
[0008] The other end of the upper connecting rod is hinged to the port of the movable cavity.
[0009] A pad support rod is installed at one end of the lower connecting rod.
[0010] The front wheel bracket has a front crossbar extending from the bottom to both sides, and the front wheels are respectively installed at both ends of the front crossbar.
[0011] The rear wheel bracket has a rear crossbar extending from the bottom to both sides, and the rear wheels are respectively installed at both ends of the rear crossbar.
[0012] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness.
[0013] 2. A folding mechanism is set up to fold the single-leg bike. The folding is efficient and can significantly reduce the size of the single-leg bike, making it easier for users to store and carry.
[0014] 3. The folding base is based on a linkage structure, which ensures structural stability and a clear force transmission path. The folding process is stable and smooth, and the single-legged vehicle is more stable when unfolded. The folding process is also simpler and more convenient.
[0015] 4. The lower linkage can be partially or completely stored in the rear wheel bracket, folding compactly and significantly reducing the volume after folding, thus improving the ease of use of the unicycle.
[0016] 5. The folding mechanism integrates support functions, resulting in a compact structure and enhancing the versatility of the single-leg bicycle. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the folded state of the single-leg bicycle in this utility model.
[0018] Figure 2 This is a schematic diagram of the unfolded state of the single-legged vehicle in this utility model.
[0019] Figure 3 This is a schematic diagram of the structure of the single-leg bicycle with the wheels hidden in this utility model.
[0020] Figure 4 This is an exploded view of the structure of the single-legged vehicle in this utility model. Detailed Implementation
[0021] The present invention will be further described in detail below with reference to the accompanying drawings. A folding single-leg bicycle includes a front wheel bracket 1 and a rear wheel bracket. The front wheel bracket 1 and the rear wheel bracket are connected by a folding mechanism 3. The folding mechanism 3 includes a mounting base 31 mounted on the top of the front wheel bracket 1. An upper connecting rod 32 is hinged to the top of the mounting base 31, and a lower connecting rod 33 is hinged to the bottom of the mounting base 31. The upper connecting rod 32 extends rearward and is hinged to the rear wheel bracket.
[0022] The lower connecting rod 33 extends into the rear wheel bracket and is hinged to the rear wheel bracket.
[0023] like Figure 1 , 2 As shown: A folding mechanism connects the front and rear wheel supports of the single-leg bicycle, significantly reducing its size and making it compact and portable. The folding mechanism includes a mounting base above the front wheel support, an upper connecting rod hinged to the upper part of the mounting base, and a lower connecting rod hinged to the lower part of the mounting base. Furthermore, the rear wheel support is hinged to the other ends of both the upper and lower connecting rods, thus connecting the front and rear wheel supports. When the single-leg bicycle needs to be folded, lifting the lower connecting rod causes the front and rear wheel supports to slide closer together. At this time, the upper and lower connecting rods rotate around their hinge points, thereby folding the single-leg bicycle. Similarly, when the unicycle needs to be unfolded, by pressing down the lower link, the front wheel bracket and the rear wheel bracket are pushed outward and slide relative to each other. At this time, the upper link and the lower link rotate in opposite directions around their own hinge point, thereby realizing the unfolding of the unicycle.
[0024] The hinge points of the upper link, lower link, mounting base, and rear wheel bracket are relatively fixed, forming a movable linkage structure. By moving this linkage structure, the front wheel bracket and rear wheel bracket can move relative to each other, thus enabling the folding or unfolding of the single-leg bicycle. Compared to single-link or complex folding mechanisms, using a linkage structure as the folding basis ensures folding functionality while providing better structural stability and force transmission path, making the single-leg bicycle more stable in the unfolded state and the folding process simpler and more convenient.
[0025] Furthermore, the lower link extends into the rear wheel bracket for hinge connection, resulting in a compact structure. The folded lower link can be nested within the rear wheel bracket, thereby reducing the overall size of the folded single-leg bike and achieving an ideal folding effect.
[0026] The mounting base 31 is provided with an upper hinge seat 311 and a lower hinge seat 312 on one side. One end of the upper connecting rod 32 is hinged to the upper hinge seat 311; one end of the lower connecting rod 33 is hinged to the lower hinge seat 312.
[0027] like Figure 3 As shown: One side of the mounting base is equipped with an upper hinge seat that hinges to the upper connecting rod, and a lower hinge seat that hinges to the lower connecting rod. These hinge seats specifically define the connection points of the upper and lower connecting rods, providing precise fulcrums for subsequent rod rotation, optimizing the force distribution of the folding mechanism during movement and load-bearing, and extending the service life of the folding mechanism. The use of specialized hinge seats ensures precise control of the hinge point positions of the upper and lower connecting rods on the mounting base, improving the stability and reliability of the connection between them, thereby guaranteeing the smoothness and repeatability of the folding mechanism's movement.
[0028] The rear wheel bracket is provided with two connecting plates 2, and a movable cavity 21 is formed between the two connecting plates 2. The lower connecting rod 33 extends into and is clamped in the movable cavity 21; the other end of the lower connecting rod 33 is hinged in the movable cavity 21.
[0029] like Figure 3 , 4 As shown: The rear wheel bracket has two connecting plates, with a hollowed-out cavity between them forming a movable chamber. The lower connecting rod extends into this cavity and is hinged within it. When the bicycle is folded, part or even most of the lower connecting rod enters this cavity, greatly reducing its protrusion and making the bicycle smaller when folded. This facilitates storage and portability, resulting in a compact structure. Furthermore, the lower connecting rod being held within the cavity constrains its movement, guiding the folding path, improving stability, and preventing it from loosening or wobbling after folding. Finally, utilizing the internal space of the rear wheel bracket as the movable chamber maximizes space utilization, demonstrating a clever design.
[0030] The other end of the upper connecting rod 32 is hinged to the port of the movable cavity 21.
[0031] like Figure 3 As shown: The upper connecting rod is hinged at the port of the movable cavity formed by the rear wheel bracket, which works in conjunction with the lower connecting rod that extends into the movable cavity for hinge connection. This clearly limits the movement of the upper connecting rod and precisely controls the linkage between the upper and lower connecting rods, so that the front wheel bracket and the rear wheel bracket fold along the set movement path. The folding is efficient and convenient, further ensuring the compactness of the folding mechanism and the smoothness of the folding process.
[0032] A pad support rod 4 is installed at one end of the lower connecting rod 33.
[0033] like Figure 1-3 As shown: A support rod with a pad is installed at one end of the lower linkage. The soft pad can be installed through this support rod, allowing the user to place the injured foot on the soft pad for movement when needed. It also provides a temporary seating function for the user to rest, increasing the practicality and comfort of the vehicle. Secondly, the support rod moves with the lower linkage, so the soft pad provides support when the single-leg bike is unfolded and retracts simultaneously when the bike is folded. This cleverly integrates the support function into the existing folding mechanism, rather than adding an additional complex separate support component, thus providing support while ensuring folding functionality.
[0034] The front wheel bracket 1 has a front crossbar 5 extending from the bottom to both sides, and the front wheels 51 are respectively installed at both ends of the front crossbar 5.
[0035] like Figure 1-4 As shown: In order to accommodate the installation of the front wheels, front crossbars are installed on both sides extending from the bottom of the front wheel bracket. The front wheels are respectively installed at both ends of the front crossbars, providing lateral stability for the front wheels. Compared with the single-wheel structure, the lateral installation of the double front wheels significantly improves the front lateral stability of the single-leg bike, prevents the single-leg bike from tipping over, and makes pushing the single-leg bike safer.
[0036] The rear wheel bracket has a rear crossbar 6 extending to both sides from the bottom, and the rear wheels 61 are respectively installed at both ends of the rear crossbar 6.
[0037] like Figure 1-4 As shown: In order to accommodate the installation of the rear wheels, a rear crossbar is installed on both sides extending from the bottom of the rear wheel bracket. The rear wheels are respectively installed at both ends of the rear crossbar, providing lateral stability for the rear wheels. Compared with the single-wheel structure, the lateral installation of the double rear wheels significantly improves the rear lateral stability of the single-leg bike, prevents the single-leg bike from tipping over, and makes pushing the single-leg bike safer.
[0038] In summary: When the bicycle needs to be folded for storage, lifting the lower link causes the upper and lower links to rotate around their hinge point, which in turn causes the front and rear wheel supports to slide closer together, thus folding the bicycle. When the bicycle needs to be unfolded for use, pressing down the lower link causes the upper and lower links to rotate around their hinge point, which in turn causes the front and rear wheel supports to slide apart, thus unfolding the bicycle.
[0039] The constraints of the length of the connecting rod and the specific position of the hinge point, along with their mutual rotational linkage, guide the front wheel bracket and the rear wheel bracket to move closer to or separate from each other along a set motion trajectory, thereby enabling the folding or unfolding of the single-leg bicycle. The folding is efficient and can significantly reduce the size of the single-leg bicycle.
[0040] Secondly, the lower link extends into the rear wheel bracket and is hinged, allowing it to be partially or completely accommodated in the movable cavity when folded. This further optimizes the compact design after folding, avoids protruding components, and makes the folded bicycle more compact, facilitating storage and carrying, and improving the bicycle's practical usability. The lower link is held in place by the rear wheel bracket, which guides and constrains it, ensuring a smooth and stable folding process.
[0041] Furthermore, the mounting base is equipped with an upper hinge seat and a lower hinge seat. The upper connecting rod is hinged to the upper hinge seat, and the lower connecting rod is hinged to the lower hinge seat. The specific hinge point positions of the upper and lower connecting rods are constrained to form a stable hinge connection. This not only ensures the structural stability of the single-leg cart in the unfolded state, but also makes the folding and unfolding process of the single-leg cart smoother and more controllable, reducing the difficulty of folding. Users can easily complete the folding operation, saving time and effort, so it can be widely promoted and used.
[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A folding single-leg bicycle, characterized in that: It includes a front wheel bracket (1) and a rear wheel bracket. The front wheel bracket (1) and the rear wheel bracket are connected by a folding mechanism (3). The folding mechanism (3) includes a mounting base (31) installed above the front wheel bracket (1). An upper connecting rod (32) is hinged above the mounting base (31), and a lower connecting rod (33) is hinged below the mounting base (31). The upper connecting rod (32) extends rearward and is hinged to the rear wheel bracket. The lower link (33) extends into the rear wheel bracket and is hinged to the rear wheel bracket.
2. A folding single-leg bicycle according to claim 1, characterized in that: The mounting base (31) is provided with an upper hinge seat (311) and a lower hinge seat (312) on one side. One end of the upper connecting rod (32) is hinged to the upper hinge seat (311); one end of the lower connecting rod (33) is hinged to the lower hinge seat (312).
3. A folding single-leg bicycle according to claim 1, characterized in that: The rear wheel bracket is provided with two connecting plates (2), and the two connecting plates (2) are hollowed out to form a movable cavity (21). The lower connecting rod (33) extends into and is clamped in the movable cavity (21); the other end of the lower connecting rod (33) is hinged in the movable cavity (21).
4. A folding single-leg bicycle according to claim 3, characterized in that: The other end of the upper connecting rod (32) is hinged to the port of the movable cavity (21).
5. A folding single-leg bicycle according to claim 1, characterized in that: A pad support rod (4) is installed at one end of the lower connecting rod (33).
6. A folding single-leg bicycle according to claim 1, characterized in that: The front wheel bracket (1) extends to both sides from the bottom and is equipped with a front crossbar (5), and the front wheels (51) are respectively installed at both ends of the front crossbar (5).
7. A folding single-leg bicycle according to claim 1, characterized in that: The rear wheel bracket has a rear crossbar (6) extending to both sides from the bottom, and the rear wheels (61) are respectively installed at both ends of the rear crossbar (6).