Folding bike

Abstract

The present invention relates to the technical field of bicycles, and provides a folding bicycle, comprising a bicycle frame, a steering member rotatably mounted at the front end of the bicycle frame, and a front wheel assembly and a rear wheel assembly that can be folded with the bicycle frame, wherein the bicycle frame comprises a front part and a rear part; the front wheel assembly comprises a front fork and a front wheel, the front fork is rotatably connected to the steering member, and can fold the front wheel to the rear part when rotating to the rear part; the rear wheel assembly comprises a rear fork and a rear wheel, the rear fork is rotatably connected to the rear end of the bicycle frame, and can fold the rear wheel to the front part and be spaced apart from the front wheel when rotating to the front part; the front fork has a first avoidance structure, and the rear fork has a second avoidance structure. Compared with the prior art, the folding bicycle provided by the present invention has a larger wheelbase after unfolding, and is comfortable and safe to ride. Moreover, since the bicycle frame, the front fork and the rear fork are all around the front wheel and the rear wheel after folding, the structure is compact, the volume is small, the shape is regular, and it is particularly thin, which is convenient for storage and carrying.

Description

Technical Field

[0001] The present invention relates to the technical field of bicycles, in particular to a folding bicycle. Background Art

[0002] As people pursue a healthier life and to better protect the environment, more and more people choose bicycles. However, bicycles are large and inconvenient to carry, and it is inconvenient to carry bicycles when transferring to subways or buses.

[0003] In order to facilitate the carrying of the bicycle, the traditional design is to set the main connection part of the bicycle to be a flippable or detachable connection. When carrying, the bicycle is folded or partially disassembled, and when riding, it is unfolded and assembled.

[0004] There are two main folding methods for existing folding bicycles. The first folding method is to fold the front wheel and the rear wheel side by side. This stacking method reduces the length direction after folding, but is very thick in the width direction, which is inconvenient to carry and place; the second folding method is to fold the front wheel and the rear wheel in a plane, and flip the front wheel to the front position, and flip the rear wheel to the rear position. This method is thinner in the thickness direction, but larger in the length direction. In order to reduce the length in the length direction, the wheelbase of the front and rear wheels of the bicycle can only be shortened. Therefore, this method is only suitable for small bicycles with a small wheelbase. Summary of the invention

[0005] The purpose of the present invention is to provide a folding bicycle to solve the technical problems that the foldable bicycle in the prior art is still too large and irregular in shape after being folded, which makes it inconvenient to carry, and the wheelbase of the front and rear wheels of the bicycle is short after being unfolded.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a folding bicycle, including a frame, a steering member rotatably mounted at the front end of the frame, and a front wheel assembly and a rear wheel assembly that can be folded with the frame, wherein the frame includes a front part and a rear part connected to each other; the front wheel assembly includes a front fork and a front wheel arranged on the front fork, the front fork is rotatably connected to the steering member, and the front wheel can be folded to the rear when rotating toward the rear; the rear wheel assembly includes a rear fork and a rear wheel arranged on the rear fork, the rear fork is rotatably connected to the rear end of the frame, and the rear wheel can be folded to the front and spaced from the front wheel when rotating toward the front; the front fork has a first avoidance structure that avoids the rear wheel assembly in a folded state, and the rear fork has a second avoidance structure that avoids the front wheel assembly in a folded state.

[0007] Furthermore, the frame has a receiving space for accommodating the front wheel and the rear wheel, and the receiving space is divided into a front side space corresponding to the front part and a rear side space corresponding to the rear part, the front wheel is folded into the rear side space in a folded state, and the rear wheel is folded into the front side space in a folded state.

[0008] Furthermore, the frame includes a front mounting seat, a rear mounting seat and at least one main beam connected therebetween, the steering member is arranged in the front mounting seat, and the rear fork is rotatably connected to the rear mounting seat; the longitudinal axis of the front mounting seat and the longitudinal axis of the rear mounting seat jointly define a longitudinal center plane, and at least one main beam extends from the front mounting seat to the rear mounting seat and deviates from the longitudinal center plane; the steering member is arranged in the front mounting seat, and the front mounting seat, the rear mounting seat and the main beam enclose the receiving space.

[0009] Furthermore, a cover member is provided on the main beam, which at least partially surrounds the front wheel and the rear wheel when folded.

[0010] Furthermore, the frame includes a front mounting seat and a rear mounting seat, the steering member is arranged in the front mounting seat, the longitudinal axis of the front mounting seat and the longitudinal axis of the rear mounting seat jointly define a longitudinal center plane, the front fork is connected to the steering member through a first articulated shaft, and the rear fork is connected to the rear mounting seat through a second articulated shaft; the axis of the first articulated shaft is perpendicular or parallel to the longitudinal center plane, and the axis of the second articulated shaft is perpendicular or parallel to the longitudinal center plane.

[0011] Furthermore, the frame includes a front mounting seat, a rear mounting seat and a main beam connected therebetween, the steering member is arranged in the front mounting seat; the longitudinal axis of the front mounting seat and the center of the rear wheel in the unfolded state jointly define a longitudinal center plane, and the accommodating space is located on one side of the frame; the front fork is connected to the steering member through a first hinge shaft, and a first preset angle is formed between the extension direction of the first hinge shaft and the direction perpendicular to the longitudinal center plane, so that the center dividing plane of the front wheel coincides with the longitudinal center plane in the unfolded state; the rear fork is connected to the rear mounting seat through a second hinge shaft, and a second preset angle is formed between the extension direction of the second hinge shaft and the direction perpendicular to the longitudinal center plane, so that the center dividing plane of the rear wheel coincides with the longitudinal center plane in the unfolded state.

[0012] Furthermore, the folding bicycle also includes a pair of handlebar assemblies arranged symmetrically, each handlebar assembly includes a handle and a stem, one end of the stem is hinged to the steering member, and the other end is hinged to the inner end of the handle, the two handlebars are parallel to each other in the folded state, and a preset spacing is left between the two stems for the front wheel and the rear wheel to partially pass through in the folded state, and the two handlebar assemblies can be rotated relative to the frame around the hinge between the stem and the steering member, and in the folded state, the two handlebar assemblies are respectively rotated to the sides of the front wheel and the rear wheel.

[0013] Furthermore, a rear fork support member is arranged between the rear fork and the frame, one end of the rear fork support member is hinged to the rear fork, and the other end is movably connected to the frame; an elastic member is arranged between the rear fork support member and the rear fork, which makes the rear fork support member swing toward the rear fork when folded; the rear fork support member is attached to the rear fork in the folded state.

[0014] Further, the front fork includes a front supporting arm, the front supporting arm includes a first section and a second section bent to each other, the first section is connected to the steering member, the second section is connected to the front wheel, and the first section and the second section constitute the first avoidance structure; or, the front fork includes two front supporting arms arranged at an interval, each of the front supporting arms includes a first section and a second section bent to each other, the first section is connected to the steering member, the second section is connected to the front wheel, and the interval between the two front supporting arms and the first section and the second section constitute the first avoidance structure.

[0015] Furthermore, the folding bicycle also includes a central axis and two pedal assemblies, wherein the central axis is rotatably mounted on the rear fork, and one of the pedal assemblies includes an adapter, a pedal and a crank, wherein the adapter is fixedly connected to the central axis, one end of the crank is connected to the pedal, and the other end is hinged to the adapter, and the pedal is buried between the front wheel and the rear wheel in the folded state.

[0016] Compared with the prior art, the folding bicycle provided by the present invention has a frame including a front part and a rear part connected to each other, the front fork is rotatably connected to the steering member and can fold the front wheel to the rear when rotating toward the rear; the rear fork is rotatably connected to the rear end of the frame and can fold the rear wheel to the front and be spaced apart from the front wheel when rotating toward the front part, the front fork has a first avoidance structure that avoids the rear wheel assembly in the folded state, and the rear fork has a second avoidance structure that avoids the front wheel assembly in the folded state. In this way, since the front wheel can be folded to the rear of the frame The front and rear wheels can be folded to the front of the frame, that is, the front and rear wheels are folded together in an interlaced manner, so the front fork and rear fork are longer, so the front and rear wheel wheelbases are larger after unfolding, and riding is comfortable and safe. Because the frame, front fork and rear fork are all around the front and rear wheels after folding, the structure is compact, the volume is small and the shape is regular, especially thin, which is convenient for storage and carrying. In addition, when unfolding, you only need to lift the frame up to make it airborne, and the rear wheel and rear fork, the front wheel and front fork are automatically unfolded under the action of gravity, and the operation is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional schematic diagram of a folding bicycle provided by the first embodiment of the present invention in an unfolded state;

[0018] Figure 2 is a top view schematic diagram of the folding bicycle provided by the first embodiment of the present invention in the unfolded state;

[0019] Figure 3 is a three-dimensional schematic diagram of a front wheel assembly of a foldable vehicle provided by Embodiment 1 of the present invention in a folded state;

[0020] Figure 4 is a top view schematic diagram of a front wheel assembly of a foldable vehicle provided by Embodiment 1 of the present invention in a folded state;

[0021] Figure 5 is a three-dimensional schematic diagram of a folding bicycle provided by the first embodiment of the present invention in a folded state;

[0022] Figure 6 is a top view schematic diagram of the folding bicycle provided by the first embodiment of the present invention in a folded state;

[0023] Figure 7 is a three-dimensional schematic diagram of a folding bicycle provided by a second embodiment of the present invention in an unfolded state;

[0024] Figure 8 is a top view schematic diagram of a folding bicycle provided by the second embodiment of the present invention in an unfolded state;

[0025] Fig. 9 is a three-dimensional schematic diagram of a front wheel assembly of a foldable vehicle provided by a second embodiment of the present invention in a folded state;

[0026] Fig.10is a three-dimensional schematic diagram of a folding bicycle provided by the second embodiment of the present invention in a folded state;

[0027] Fig.11 is a top view schematic diagram of a folding bicycle provided by the second embodiment of the present invention in a folded state;

[0028] Fig.12 is a three-dimensional schematic diagram of a folding bicycle provided by a third embodiment of the present invention in an unfolded state;

[0029] Fig.13 is a top view schematic diagram of a folding bicycle provided by a third embodiment of the present invention in an unfolded state;

[0030] Fig.14 is a three-dimensional schematic diagram of a front wheel assembly of a foldable vehicle provided by a third embodiment of the present invention in a folded state;

[0031] Fig.15 is a three-dimensional schematic diagram of a folding bicycle provided by a third embodiment of the present invention in a folded state;

[0032] Fig.16 is a front view schematic diagram of a folding bicycle provided by a fourth embodiment of the present invention in a folded state;

[0033] Fig.17 is a front view schematic diagram of a folding bicycle provided by a fifth embodiment of the present invention in a folded state;

[0034] Fig.18 It is a three-dimensional schematic diagram of the folding bicycle provided by the sixth embodiment of the present invention in a folded state.

[0035] Main component symbols

[0036] 100: Folding bike PP; P'-P': longitudinal center plane

[0037] 10: Frame 11: Front

[0038] 12: Rear 10a: Storage space

[0039] 10b: front space 10c: rear space

[0040] 13: Front mounting seat 14: Rear mounting seat

[0041] 15: Main beam 16: First articulated axis

[0042] 17: Second articulated axis

[0043] 20: Steering parts

[0044] 30: Front wheel assembly 31: Front fork

[0045] 32: Front wheel 33: First avoidance structure

[0046] 34: front support arm 341: first section

[0047] 342: Second paragraph

[0048] 40: Rear wheel assembly 41: Rear fork

[0049] 42: Rear wheel 43: Second avoidance structure

[0050] 44: Rear support arm 441: The third section

[0051] 442: The fourth paragraph

[0052] 50: handlebar assembly 51: handle

[0053] 52: stem

[0054] 60: Rear fork support 70: Middle shaft

[0055] 80: Pedal assembly 81: Adapter

[0056] 82: Pedal 83: Crank

[0057] A1: The first preset angle A2: The second preset angle

[0058] 90: Saddle 91: Seatpost DETAILED DESCRIPTION

[0059] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] In order to enable those skilled in the art to better understand the technical solution of the present invention, the implementation of the present invention is described in detail below with reference to specific drawings.

[0061] For the convenience of description, the terms "front", "rear", "left", "right", "up" and "down" mentioned below are based on the directions of the folding bicycle frame. Figure 1 The X-axis direction toward the front of the frame is "front", the Y-axis direction is "right", and the Z-axis direction is "up".

[0062] Unless otherwise defined, the technical or scientific terms used herein shall have the common meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not indicate a quantity limitation, but indicate the existence of at least one.

[0063] Embodiment 1

[0064] like Figures 1 to 6 As shown, the folding bicycle 100 provided in this embodiment can be a bicycle or electric vehicle with a large wheelbase. Of course, its structure is also suitable for bicycles or electric vehicles with a small wheelbase, and can fold a bicycle or electric vehicle with a small wheelbase into a smaller volume.

[0065] See also Figures 1 to 6 The folding bicycle 100 comprises a frame 10, a steering member 20 rotatably mounted at the front end of the frame 10, and a front wheel assembly 30 and a rear wheel assembly 40 which can be folded with the frame 10, wherein the frame 10 comprises a front portion 11 and a rear portion 12 which are connected to each other, the front wheel assembly 30 comprises a front fork 31 and a front wheel 32 which is arranged on the front fork 31, the front fork 31 is rotatably connected to the steering member 20, and the front wheel 32 can be folded to the rear portion 12 when the front fork 31 is rotated toward the rear portion 12; the rear wheel assembly 40 comprises a rear fork 41 and a rear wheel 42 which is arranged on the rear fork 41, the rear fork 41 is rotatably connected to the rear end of the frame 10, and the rear wheel 42 can be folded to the front portion 11 and spaced apart from the front wheel 32 when the rear fork 41 is rotated toward the front portion 11; the front fork 31 has a first avoidance structure 33 which avoids the rear wheel assembly 40 in the folded state, and the rear fork 41 has a second avoidance structure 43 which avoids the front wheel assembly 30 in the folded state. It is easy to understand that the front wheel 32 can swing relative to the frame 10 in the unfolded position and the folded position through the front fork 31 and the rear wheel 42 can swing relative to the frame 10 through the rear fork 41. In the unfolded state, the front fork 31 and the rear fork 41 swing to the front and rear sides of the frame 10 respectively, and the front wheel 32 and the rear wheel 42 are respectively located at the unfolded position at the front and rear sides of the frame 10; in the folded state, the front fork 31 swings toward the rear side of the frame 10, so that the front wheel 32 is folded to the folded position of the rear part 12, and the rear fork 41 swings toward the front side of the frame 10 , so that the rear wheel 42 is folded to the folding position of the front part 11; the first avoidance structure 33 on the front fork 31 can make the front fork 31 avoid the rear wheel 42 and the rear fork 41 during the swinging process of unfolding and folding, and the second avoidance structure 43 on the rear fork 41 can make the rear fork 41 avoid the front wheel 32 and the front fork 31 during the swinging process of unfolding and folding. In this way, it can be ensured that the front and rear wheel assemblies 30 and 40 will not interfere with each other during folding and unfolding, so that the folding bicycle 100 can be smoothly folded and unfolded.

[0066] See also Figures 1 to 6 The frame 10 has a receiving space 10a for accommodating the front wheel 32 and the rear wheel 42. The receiving space 10a is divided into a front space 10b corresponding to the front portion 11 and a rear space 10c corresponding to the rear portion 12. The front wheel 32 is folded into the rear space 10c in the folded state, and the rear wheel 42 is folded into the front space 10b in the folded state. It can be understood that since the above-mentioned folding bicycle 100 is folded and unfolded by swinging the front and rear forks 31, 41 relative to the frame 10, the folding position of the front wheel 32 is located in the rear space 10c, and the folding position of the rear wheel 42 is located in the front space 10b. In this way, since the front and rear wheels 32, 42 are staggered, the front and rear forks 31, 41 are longer, so the folding bicycle 100 has a larger front and rear wheel wheelbase after unfolding, and riding is comfortable and safe; and because the frame 10 and the front and rear forks 31, 41 are all around the front and rear wheels 32, 42, the size of the folding bicycle 100 after folding is extremely small, especially thin, compact in structure, regular in appearance, and easy to carry.

[0067] See also Figures 1 to 6 The frame 10 includes a front mounting seat 13, a rear mounting seat 14 and a main beam 15 connected therebetween. The steering member 20 is disposed in the front mounting seat 13, and the rear fork 41 is rotatably connected to the lower end of the rear mounting seat 14. The rear mounting seat 14 may be a vertical tube, and the seat rod 91 is telescopically mounted in the rear mounting seat 14. A saddle 90 is disposed on the seat rod 91. In the folded state, the saddle 90 moves with the contraction of the seat rod 91 and finally rests on the top of the front wheel 32, so that the folded volume is smaller. The longitudinal axis 13a of the front mounting seat 13 and the longitudinal axis 14a of the rear mounting seat 14 jointly define a longitudinal center plane PP. The main beam 15 extends from the front mounting seat 13 to the rear mounting seat 14 and deviates from the longitudinal center plane PP. The front mounting seat 13, the rear mounting seat 14 and the main beam 15 jointly enclose a receiving space 10a. In this embodiment, the number of main beams 15 is but not limited to two. The two main beams 15 extend from the front mounting seat 13 to the rear mounting seat 14 respectively. A preset spacing is reserved between the two main beams 15 for the front and rear wheels 32 and 42 to partially pass through in the folded state. The front mounting seat 13, the rear mounting seat 14 and the two main beams 15 define the above-mentioned receiving space 10a. That is to say, in the folded state, the front and rear wheels 32 and 42 are swung into the receiving space 10a through the front and rear forks 31 and 41 respectively. The front wheel 32 is located on the rear side of the rear wheel 42, and the two are arranged at an interval. The front and rear forks 31 and 41 are swung to the bottom of the main beam 15 respectively. In this way, since the main beam 15 leans against the two sides of the front and rear wheels 32 and 42 in the folded state, the folded volume is smaller.

[0068] In another embodiment, there is one main beam 15, which extends from the front mounting seat 13 to the rear mounting seat 14 and deviates from the longitudinal center plane PP, and can be located on the left or right side of the longitudinal center plane PP. In this way, in the folded state, the front and rear wheels 32 and 42 are located on the right or left side of the main beam 15.

[0069] See also Figures 1 to 6 The folding bicycle 100 of this embodiment is a longitudinal folding structure, the front fork 31 is connected to the steering member 20 through the first hinge shaft 16, and the rear fork 41 is connected to the rear mounting seat 14 through the second hinge shaft 17; the axis of the first hinge shaft 16 is perpendicular to the longitudinal center plane PP, and the axis of the second hinge shaft 17 is perpendicular to the longitudinal center plane PP, that is, the front fork 31 can swing up and down relative to the steering member 20 around the axis of the first hinge shaft 16, thereby driving the front wheel 32 to swing up and down relative to the frame 10, and the rear fork 41 can swing up and down relative to the rear mounting seat 14 around the axis of the second hinge shaft 17, thereby driving the rear wheel 42 to swing up and down relative to the frame 10, so that the front and rear wheels 32, 42 are swung upward into the accommodating space 10a of the frame 10. It is worth mentioning that during the unfolding and folding process, the movement trajectories of the centers of the front and rear wheels 32, 42 are both on the above-mentioned longitudinal center plane PP. In this way, in the folded state, the centers of the front and rear wheels 32, 42 are in the middle of the two main beams 15. When unfolding, it is only necessary to lift the frame up to make it suspended in the air, and the rear wheel and rear fork, front wheel and front fork will automatically unfold under the action of gravity, and the operation is quick and convenient.

[0070] See also Figures 1 to 6 The front fork 31 includes a front support arm 34, and the rear fork 41 includes a rear support arm. In the present embodiment, the number of the front support arms 34 is but not limited to two. The two front support arms 34 are spaced apart from the longitudinal center plane PP, and each front support arm 34 includes a first section 341 and a second section 342 that are bent to each other. The first section 341 is connected to the steering member 20, and the second section 342 is connected to the front wheel 32. The interval between the two front support arms 34 and the first section 341 and the second section 342 constitute a first avoidance structure 33; the rear fork 41 includes two rear support arms 44 that are spaced apart from the longitudinal center plane PP, and the interval between the two rear support arms 44 constitutes a second avoidance structure 43. In particular, in the folded state, the second section 342 of the front fork 31 on the same side is located between the main beam 15 on that side and the rear support arm 44 on that side, the upper part of the front wheel 32 is folded into the rear space 10c between the two main beams 15, and the lower part thereof is passed through the rear fork 41 via the second avoidance structure 43, the rear axle of the rear wheel 42 is accommodated at the bend of the first section 341 and the second section 342, and the upper part of the rear wheel 42 is folded into the front space 10b between the two main beams 15 via the two front support arms 34. It can be understood that the front fork 31 is stored in the space between the main beam 15 and the rear fork 41, reducing the overall thickness after folding.

[0071] In yet another embodiment, the number of the front support arm 34 is one, the front support arm 34 deviates from the aforementioned longitudinal center plane PP, and the number of the rear support arms 44 is two.

[0072] In yet another embodiment, the number of the front support arms 34 is two, the number of the rear support arm 44 is one, and the rear support arm 44 deviates from the aforementioned longitudinal center plane PP.

[0073] See also Figures 1 to 6 The main beam 15 is provided with a cover member (not shown) that at least partially surrounds the front wheel 32 and the rear wheel 42 when folded. The cover member can be a soft cloth of a changeable shape, or a cover of a fixed shape, for wrapping the front and rear wheels 32, 42. In this embodiment, the cover member is a soft cloth cover of a changeable shape, which is fixed between the two main beams 15. In this way, in the folded state, the cover member can wrap around the portion of the front and rear wheels 32, 42 that passes through the main beam 15, so as to prevent the wheels from soiling the user and components such as the stem and handles.

[0074] See also Figures 1 to 6 The folding bicycle 100 of the present embodiment further comprises a pair of symmetrically arranged handlebar assemblies 50, each handlebar assembly 50 comprises a handle 51 and a stem 52, one end of the stem 52 is hinged to the steering member 20, and the other end is hinged to the inner end of the handle 51; a preset spacing is reserved between the two stems 52 for the upper part of the front wheel 32 and the upper part of the rear wheel 42 to pass through in the folded state; in the unfolded state, the two handles 51 are substantially arranged perpendicular to the above-mentioned longitudinal center plane PP when not turning; when folded, the two handles 51 are respectively rotated upward around the hinge axis between them and the stem 52 until they are parallel to each other, and the two stems 52 are rotated around the hinge axis between them and the steering member 20 toward the frame 10, and finally the two sets of handlebar assemblies 50 are respectively close to the two sides of the front and rear wheels 32, 42, at which time the two handles 51 are located between the stem 52 and the main beam 15 and their outer ends point to the rear end of the frame 10; the beneficial effect is that the volume after folding is smaller, especially thinner.

[0075] See also Figures 1 to 6As a further optimization, a rear fork support member 60 is provided between the rear fork 41 and the frame 10, one end of the rear fork support member 60 is hinged to the rear fork 41, and the other end is movably connected to the frame 10. The rear fork support member 60 can be a bracket with a certain strength, or a shock absorber with an elastic shock-absorbing structure. An elastic member (not shown) is provided between the rear fork support member 60 and the rear fork 41 for swinging the rear fork support member 60 toward the rear fork 41 when folded. The elastic member always provides a force for driving the free end of the rear fork support member 60 to abut against the hinge between the rear fork 41 and the frame 10. When unfolded, the free end of the rear fork support member 60 moves along the rear mounting seat 14 under the action of the elastic member and finally abuts against a preset position on the rear mounting seat 14; in the folded state, the free end of the rear fork support member 60 is automatically folded to abut against the folded end of the rear fork 41 (i.e., the end of the rear fork 41 hinged to the frame 10) under the action of the elastic member, thereby making folding quick and convenient and reducing the volume after folding.

[0076] See also Figures 1 to 6 As a further optimization, the folding bicycle 100 of the present embodiment further includes a central axis 70 and two left and right pedal assemblies 80. The central axis 70 is rotatably arranged on the rear fork 41. The right pedal assembly can be any pedal assembly in the prior art. The left pedal assembly 80 includes an adapter 81, a pedal 82 and a crank 83. The adapter 81 is fixedly connected to the central axis 70. One end of the crank 83 is connected to the pedal 82, and the other end is hinged to the adapter 81. When folded, the crank 83 rotates 180 degrees around the hinge axis with the adapter 81 and the pedal 82 is buried between the front wheel 32 and the rear wheel 42, thereby preventing the crank 83 from protruding from the rear end of the frame and at the same time well storing the pedal 82, making the structure more compact and smaller in size.

[0077] Embodiment 2

[0078] The following is combined with Figures 7 to 11 Only the differences from the previous embodiment are described in detail.

[0079] See also Figures 7 to 11 The folding bicycle 100 of the present embodiment is a transverse folding structure. The frame 10 includes a front mounting seat 13, a rear mounting seat 14 and a main beam 15 connected therebetween. The steering member 20 is disposed in the front mounting seat 13. The longitudinal axis 13a of the front mounting seat 13 and the longitudinal axis 14a of the rear mounting seat 14 jointly define a longitudinal center plane PP. The number of the main beam 15 is but is not limited to one. The main beam 15 extends from the front mounting seat 13 to the rear mounting seat 14 and deviates from the longitudinal center plane PP. The front mounting seat 13, the rear mounting seat 14 and the main beam 15 enclose a receiving space 10a.

[0080] See also Figures 7 to 11The front fork 31 includes a front support arm 34, and the rear fork 41 includes a rear support arm 44. The number of the front support arm 34 is but not limited to one, and the front support arm 34 extends from the steering member 20 to the front wheel 32 and is arranged away from the longitudinal center plane PP, forming a first avoidance structure 33; the number of the rear support arm 44 is but not limited to one, and the rear support arm 44 extends from the rear mounting seat 14 to the rear wheel 42 and is arranged away from the longitudinal center plane PP, forming a second avoidance structure 43. The front fork 31 is connected to the steering member 20 through the first hinge shaft 16, and the rear fork 41 is connected to the rear mounting seat 14 through the second hinge shaft 17.

[0081] Specifically, the axis of the first hinge shaft 16 is parallel to the longitudinal center plane PP, the first hinge shaft 16 extends downward from the steering member 20 and obliquely toward the rear portion 12 of the frame 10, the axis of the second hinge shaft 17 is parallel to the longitudinal center plane PP, and the second hinge shaft 17 extends downward from the rear mounting seat 14 and obliquely toward the front portion 11 of the frame 10, that is, the front fork 31 can swing left and right relative to the steering member 20 around the axis of the first hinge shaft 16 to drive the front wheel 32 to swing left and right relative to the frame 10, so that the rear wheel 42 swings into the rear space 10c in the folded state. The rear fork 41 can swing left and right relative to the rear mounting seat 14 around the axis of the second hinge shaft 17 to drive the rear wheel 42 to swing left and right relative to the frame 10, so that the rear wheel 42 swings into the front space 10b in the folded state, and after the front and rear wheels 32, 42 swing upward into the receiving space 10a of the frame 10, the folding bicycle 100 is folded to minimize its volume. It is worth mentioning that, in the unfolded state and the folded state, the centers of the front and rear wheels 32, 42 are both on the longitudinal center plane PP.

[0082] Of course, the structure and folding method of the front wheel assembly or the rear wheel assembly may also be the structure and method of the first embodiment.

[0083] Embodiment 3

[0084] The following is combined with Figures 12 to 15 Only the differences from the previous embodiment are described in detail.

[0085] See also Figures 12 to 15The folding bicycle 100 of this embodiment adopts an offset beam structure, which includes a frame 10, a steering member 20 rotatably mounted at the front end of the frame 10, and a front wheel assembly 30 and a rear wheel assembly 40 that can be folded with the frame 10, wherein the frame 10 includes a front mounting seat 13, a rear mounting seat 14, and a main beam 15 connected therebetween, the number of the main beam 15 is but not limited to one, and the main beam 15 extends from the front mounting seat 13 to the rear mounting seat 14. The steering member 20 is disposed in the front mounting seat 13, and the front mounting seat 13, the rear mounting seat 14, and the main beam 15 enclose a receiving space 10a, which is located at one side of the frame 10. The longitudinal axis 13a of the front mounting seat 13 and the center of the rear wheel 42 in the unfolded state jointly define a longitudinal center plane P'-P', and the front fork 31 is connected to the steering member 20 via the first hinge shaft 16, and a first preset angle A1 is formed between the extension direction of the first hinge shaft 16 and the direction perpendicular to the longitudinal center plane P'-P', so that the center plane of the front wheel 32 (i.e., the axial center plane of the front wheel 32) coincides with the longitudinal center plane P'-P' in the unfolded state; the rear fork 41 is connected to the rear mounting seat 14 via the second hinge shaft 17, and a second preset angle A2 is formed between the extension direction of the second hinge shaft 17 and the direction perpendicular to the longitudinal center plane P'-P', so that the center plane of the rear wheel 42 (i.e., the axial center plane of the rear wheel 42) coincides with the longitudinal center plane P'-P' in the unfolded state. It is easy to understand that when the first and second preset angles A1 and A2 are small, the folding bicycle 100 is basically a longitudinal folding structure, that is, the front fork 31 can swing up and down relative to the steering member 20 around the axis of the first hinge shaft 16 to drive the front wheel 32 to swing up and down relative to the frame 10, so that the rear wheel 42 swings to the rear side space 10c in the folded state; the rear fork 41 can swing up and down relative to the rear mounting seat 14 around the axis of the second hinge shaft 17 to drive the rear wheel 42 to swing up and down relative to the frame 10, so that the rear wheel 42 swings to the front side space 10b in the folded state. It is worth mentioning that in the above-mentioned folding bicycle 100 structure, in the unfolded state, the center of the front wheel 32 and the center of the rear wheel 42 are both located in the longitudinal center plane P'-P', that is, the center dividing plane of the front wheel 32 and the center dividing plane of the rear wheel 42 in the unfolded state are on the same plane; and in the folded state, the front wheel assembly 30 and the rear wheel assembly 40 are both located on one side of the frame 10.

[0086] Of course, when the first and second preset angles A1 and A2 are relatively large, the folding bicycle 100 is basically a transverse folding structure, that is, the front fork 31 can swing left and right around the axis of the first hinge shaft 16 relative to the steering member 20, so as to drive the front wheel 32 to swing left and right relative to the frame 10; the rear fork 41 can swing left and right around the axis of the second hinge shaft 17 relative to the rear mounting seat 14, so as to drive the rear wheel 42 to swing left and right relative to the frame 10.

[0087] Specifically, the front fork 31 includes a front support arm 34, and the rear fork 41 includes a rear support arm 44. The number of the front support arm 34 is but not limited to one, and the front support arm 34 includes a first section 341 and a second section 342 that are bent to each other, the first section 341 is connected to the steering member 20, and the second section 342 is connected to the front wheel 32, the first section 341 extends obliquely from the steering member 20 to the front axle and to the outside of the front wheel 32, the first section 341 and the second section 342 constitute a first avoidance structure 33, and in the folded state, the rear axle of the rear wheel 42 is accommodated at the bending of the first section 341 and the second section 342. The number of the rear support arm 44 is but not limited to one, and the rear support arm 44 includes a third section 441 and a fourth section 442 that are bent to each other, the third section 441 is connected to the rear mounting seat 14, and the fourth section 442 is connected to the rear wheel 42, and the third section 441 extends obliquely from the rear mounting seat 14 to the rear axle and to the outer side of the rear wheel 42, and the third section 441 and the fourth section 442 constitute a second avoidance structure 43. It can be understood that the front mounting seat 13, the rear mounting seat 14 and the main beam 15 are located on one side of the front and rear wheels 32, 42, so the volume is smaller. Moreover, the length of the main beam 15 may not be limited by the diameter of the front and rear wheels 32, 42, so that in the structure using the front and rear wheels 32, 42 with larger diameters, a shorter main beam 15 can be used.

[0088] See also Figures 12 to 15 The folding bicycle 100 of this embodiment also includes a handle 51 and a stem 52, one end of the stem 52 is hinged to the steering member 20, and the other end is hinged to the middle of the handle 51; in the folded state, the handle 51 and the stem 52 are parked on one side of the front and rear wheels 32, 42, so that the folded volume is smaller.

[0089] Embodiment 4

[0090] The following is combined with Fig.16 Only the differences from the previous embodiment are described in detail.

[0091] See also Fig.16 The frame 10 includes a main beam 15, both ends of which are mounted on the upper ends of the front mounting seat 13 and the rear mounting seat 14, so that the main beam and the front mounting seat 13 and the rear mounting seat 14 enclose the above-mentioned receiving space for accommodating the front and rear wheel assemblies 30 and 40. In the folded state, the main beam 15 is located above the front and rear wheels 32 and 42.

[0092] Embodiment 5

[0093] The following is combined with Fig.17 Only the differences from the previous embodiment are described in detail.

[0094] See also Fig.17The frame 10 includes a main beam 15, both ends of which are mounted on the upper ends of the front mounting seat 13 and the rear mounting seat 14. The bottom surface of the main beam 15 is provided with a groove (not shown) connected to the receiving space. In the folded state, the upper parts of the front and rear wheels 32 and 42 are folded into the groove, so that the folded volume is smaller.

[0095] Embodiment 6

[0096] The following is combined with Fig.18 Only the differences from the previous embodiment are described in detail.

[0097] See also Fig.18 The folding bicycle 100 of the present embodiment further comprises a pair of symmetrically arranged handlebar assemblies 50, each handlebar assembly 50 comprises a handle 51 and a stem 52, one end of the stem 52 is hinged to the steering member 20, and the other end is hinged to the inner end of the handle 51; a preset spacing is left between the two stems 52 for the upper part of the front wheel 32 and the upper part of the rear wheel 42 to pass through in the folded state; in the unfolded state, the two handles 51 are substantially perpendicular to the longitudinal center plane PP when not turning; when folded, the two handles The two handlebars 51 rotate downward around the hinge axes between them and the stem 52 until they are parallel to each other. The two stems 52 rotate around the hinge axes between them and the steering member 20 toward the frame 10, and finally the two handlebar assemblies 50 are respectively close to the two sides of the front and rear wheels 32, 42. At this time, the two handlebars 51 are located between the stems 52 and the main beam 15 and their outer ends point to the front end of the frame 10. The beneficial effect of this is that in the structure of the main beam 15 with the same length, the length of the stem 52 can be designed to be longer, and the riding is more comfortable.

[0098] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A folding bicycle, comprising a frame, a steering member rotatably mounted at the front end of the frame, and a front wheel assembly and a rear wheel assembly that can be folded with the frame, characterized in that: The frame includes a front part and a rear part connected to each other; the front wheel assembly includes a front fork and a front wheel arranged on the front fork, the front fork is rotatably connected to the steering member, and the front wheel can be folded to the rear when the front fork is rotated toward the rear; the rear wheel assembly includes a rear fork and a rear wheel arranged on the rear fork, the rear fork is rotatably connected to the rear end of the frame, and the rear wheel can be folded to the front part and arranged with a distance from the front wheel in the front-to-back direction when the rear fork is rotated toward the front; the front fork has a first avoidance structure that avoids the rear wheel assembly in a folded state, and the rear fork has a second avoidance structure that avoids the front wheel assembly in a folded state; The front wheel can swing relative to the frame in an unfolded position and a folded position via the front fork, and the rear wheel can swing relative to the frame in an unfolded position and a folded position via the rear fork; The frame has a receiving space for accommodating the front wheel and the rear wheel, the receiving space is divided into a front side space corresponding to the front part and a rear side space corresponding to the rear part, the front wheel is folded into the rear side space in a folded state, and the rear wheel is folded into the front side space in a folded state; The frame comprises a front mounting seat, a rear mounting seat and at least one main beam connected therebetween, the steering member is arranged in the front mounting seat, and the rear fork is rotatably connected to the rear mounting seat; the longitudinal axis of the front mounting seat and the longitudinal axis of the rear mounting seat jointly define a longitudinal center plane; The front fork includes a front support arm, which extends from the steering member toward the front wheel and deviates from the longitudinal center plane to form a first avoidance structure; The rear fork includes two rear support arms that are spaced apart from the longitudinal center plane, and the space between the two rear support arms constitutes a second avoidance structure; or, the rear fork includes one rear support arm that is spaced apart from the longitudinal center plane to constitute the second avoidance structure.

2. A folding bicycle, comprising a frame, a steering member rotatably mounted at the front end of the frame, and a front wheel assembly and a rear wheel assembly that can be folded with the frame, characterized in that: The frame includes a front part and a rear part connected to each other; the front wheel assembly includes a front fork and a front wheel arranged on the front fork, the front fork is rotatably connected to the steering member, and the front wheel can be folded to the rear when the front fork is rotated toward the rear; the rear wheel assembly includes a rear fork and a rear wheel arranged on the rear fork, the rear fork is rotatably connected to the rear end of the frame, and the rear wheel can be folded to the front part and arranged with a distance from the front wheel in the front-to-back direction when the rear fork is rotated toward the front; the front fork has a first avoidance structure that avoids the rear wheel assembly in a folded state, and the rear fork has a second avoidance structure that avoids the front wheel assembly in a folded state; The front wheel can swing relative to the frame in an unfolded position and a folded position via the front fork, and the rear wheel can swing relative to the frame in an unfolded position and a folded position via the rear fork; The frame has a receiving space for accommodating the front wheel and the rear wheel, the receiving space is divided into a front side space corresponding to the front part and a rear side space corresponding to the rear part, the front wheel is folded into the rear side space in a folded state, and the rear wheel is folded into the front side space in a folded state; The frame includes a front mounting seat and a rear mounting seat, the steering member is arranged in the front mounting seat, and the longitudinal axis of the front mounting seat and the longitudinal axis of the rear mounting seat jointly define a longitudinal center plane; The front fork includes a front support arm, which extends from the steering member toward the front wheel and deviates from the longitudinal center plane to form a first avoidance structure; The rear fork includes two rear support arms that are spaced apart from the longitudinal center plane, and the space between the two rear support arms constitutes a second avoidance structure; or, the rear fork includes one rear support arm that is spaced apart from the longitudinal center plane to constitute the second avoidance structure.

3. The folding bicycle according to claim 1, characterized in that: At least one main beam extends from the front mounting seat to the rear mounting seat and deviates from the longitudinal center plane; the front mounting seat, the rear mounting seat and the main beam enclose the receiving space.

4. The folding vehicle according to claim 3, characterized in that: The main beam is provided with a cover member which at least partially surrounds the front wheel and the rear wheel when folded.

5. The folding bicycle according to claim 2, characterized in that: The front fork is connected to the steering member via a first articulated shaft, and the rear fork is connected to the rear mounting seat via a second articulated shaft; the axis of the first articulated shaft is perpendicular or parallel to the longitudinal center plane, and the axis of the second articulated shaft is perpendicular or parallel to the longitudinal center plane.

6. The folding vehicle according to claim 1 or 2, characterized in that: It also includes a pair of handlebar assemblies arranged symmetrically, each handlebar assembly includes a handle and a stem, one end of the stem is hinged to the steering member, and the other end is hinged to the inner end of the handle, the two handlebars are parallel to each other in the folded state, a preset spacing is left between the two stems for the front wheel and the rear wheel to partially pass through in the folded state, and the two handlebar assemblies can be rotated relative to the frame around the hinge between the stem and the steering member, and in the folded state, the two handlebar assemblies are respectively rotated to the sides of the front wheel and the rear wheel.

7. The folding vehicle according to claim 1 or 2, characterized in that: A rear fork support is provided between the rear fork and the frame, one end of the rear fork support is hinged to the rear fork, and the other end is movably connected to the frame; an elastic member is provided between the rear fork support and the rear fork for making the rear fork support swing toward the rear fork when folded; the rear fork support is abutted against the rear fork in the folded state.

8. The folding vehicle according to claim 1 or 2, characterized in that: It also includes a central axis and two pedal assemblies, wherein the central axis is rotatably mounted on the rear fork, and one of the pedal assemblies includes an adapter, a pedal and a crank, wherein the adapter is fixedly connected to the central axis, one end of the crank is connected to the pedal, and the other end is hinged to the adapter, and the pedal is buried between the front wheel and the rear wheel in a folded state.

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