WO2019075718A1

WO2019075718A1 - Foldable bicycle

Info

Publication number: WO2019075718A1
Application number: PCT/CN2017/107008
Authority: WO
Inventors: 邱捷加
Original assignee: 深圳市善谦科技有限公司
Priority date: 2017-10-20
Filing date: 2017-10-20
Publication date: 2019-04-25

Abstract

Disclosed is a foldable bicycle (100), comprising a frame (10), a steering member (20) rotatably mounted at a front end of the frame (10), and a front wheel assembly (30) and a rear wheel assembly (40) foldable relative to the frame (10), wherein the frame (10) comprises a front portion (11) and a rear portion (12); the front wheel assembly (30) comprises a front fork (31) and a front wheel (32), the front fork (31) being rotatably connected to the steering member (20) and being capable of enabling the front wheel (32) to be folded to the rear portion (12) when rotating to the rear portion (12); the rear wheel assembly (40) comprises a rear fork (41) and a rear wheel (42), the rear fork (41) being rotatably connected to a rear end of the frame (10) and being capable of enabling the rear wheel (42) to be folded to the front portion (11) and to be arranged spaced apart from the front wheel (32) when rotating to the front portion (11); and the front fork (31) has a first avoidance structure (33), and the rear fork (41) has a second avoidance structure (43). Compared with the prior art, the foldable bicycle (100) provided by the present solution has a larger shaft distance after unfolding, so that the riding is comfortable and safe, and since the frame (10), the front fork (31) and the rear fork (41) all surround the front wheel (32) and the rear wheel (42) after folding, the foldable bicycle is compact in structure and smaller in size and has a regular shape, and in particular is thinner, thereby facilitating storage and carrying.

Description

Folding car

[0001] The present invention relates to the technical field of bicycles, and more particularly to a folding bicycle.

Background technique

[0002] As people pursue a healthier life and better protect the environment, more and more people choose to have their own bicycles. However, the size of the bicycle is not convenient to carry, and it is not convenient to carry a bicycle to the subway or the bus.

[0003] In order to facilitate the carrying of the bicycle, the conventional design is to set the main connecting portion of the bicycle to a reversible or detachable connection, carry the cymbal, fold or partially disassemble the bicycle, ride the cymbal, and assemble the shovel.

[0004] The existing folding bicycle mainly has two folding methods. The first folding method is: folding the front wheel and the rear wheel side by side, the folding direction is reduced in the length direction, but the width direction is thick. It is not convenient to carry and place; the second folding method is: Fold the front and rear wheels in one plane, and turn the front wheel to the front position, and the rear wheel to the rear position. This method is thinner in the thickness direction. However, the length direction is large. In order to reduce the length in the length direction, the wheelbase of the front and rear wheels of the bicycle can only be reduced. Therefore, this method is only suitable for a small bicycle with a small wheelbase.

technical problem

[0005] An object of the present invention is to provide a folding bicycle to solve the problem that the foldable bicycle existing in the prior art is still too large in size and irregular in shape, is not convenient to carry, and is used to display the axles of the front and rear wheels of the rear vehicle. Short technical issues.

Problem solution

Technical solution

[0006] In order to achieve the above object, the present invention adopts a technical solution of: providing a folding vehicle including a frame, a steering member rotatably mounted at a front end of the frame, and a front wheel assembly foldable with the frame And a rear wheel assembly, wherein the frame includes front and rear portions connected to each other; the front wheel assembly includes a front fork and a front wheel disposed on the front fork, the front fork being rotatably coupled to the a steering member, and is rotatable toward the rear portion to fold the front wheel to the rear portion; the rear wheel assembly includes a rear fork and is disposed behind a rear wheel on the fork, the rear fork is rotatably coupled to a rear end of the frame, and is rotatable toward the front portion to fold the rear wheel to the front portion and spaced from the front wheel The front fork has a first avoiding structure that is evaded from the rear wheel assembly in a folded state, and the rear fork has a second avoiding structure that avoids the front wheel assembly in a folded state.

[0007] Further, 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 the rear part The corresponding rear side space, 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] Further, the frame includes a front mount, a rear mount, and at least one main beam connected therebetween, the steering member is disposed in the front mount, and the rear fork is rotatable Connected to the rear mount; the longitudinal axis of the front mount and the longitudinal axis of the rear mount together define a longitudinal center plane, at least one of the main beams from the front mount to the rear The mounting seat extends and deviates from the longitudinal center plane; the steering member is disposed in the front mounting seat, and the front mounting seat, the rear mounting seat and the main beam are enclosed to form the receiving space.

Further, the main beam is provided with a cover member that at least partially surrounds the front wheel and the rear wheel in a folding frame.

[0010] Further, the frame includes a front mounting seat and a rear mounting seat, and the steering member is disposed in the front mounting seat

The longitudinal axis of the front mount together with the longitudinal axis of the rear mount defines a longitudinal center plane, the front fork is coupled to the steering member by a first hinge shaft, and the rear fork passes the second hinge A shaft is coupled to the rear mount; an axis of the first hinge shaft is perpendicular or parallel to a longitudinal center plane, and an axis of the second hinge shaft is perpendicular or parallel to a longitudinal center plane.

[0011] Further, the frame includes a front mount, a rear mount, and a main beam connected therebetween, the steering member is disposed in the front mount; the longitudinal axis of the front mount Forming a longitudinal center plane together with a center of the rear wheel in an unfolded state, the receiving space being located at one side of the frame; the front fork being coupled to the steering member by a first hinge shaft, Forming a first predetermined angle between the extending direction of the first hinge shaft and the direction perpendicular to the longitudinal center plane, so that the front surface of the front wheel coincides with the longitudinal center plane in the unfolded state; The rear fork is coupled to the rear mount by a second hinge shaft

Forming a second between the extending direction of the second hinge shaft and the direction perpendicular to the longitudinal center plane The angle is preset so that the middle face of the rear wheel coincides with the longitudinal center plane in the rearward state.

[0012] Further, the folding cart further includes a pair of handlebar assemblies symmetrically disposed, each handlebar assembly includes a handle and a handle, the stem end is hinged to the steering member, and the other end is The inner ends of the handle are hinged, and the two handles are parallel to each other in a folded state, and a predetermined spacing between the two stems for the front wheel and the rear wheel portion to be passed out in a folded state is left, and The hinge is rotated about the hinge of the steering member and the steering member, and the two handlebar assemblies are respectively rotated to both sides of the front wheel and the rear wheel in a folded state.

[0013] Further, a rear fork support is disposed 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; Between the rear fork support and the rear fork, there is disposed an elastic member that swings the rear fork support to the rear fork; the rear fork support abuts against the rear fork in a folded state.

[0014] Further, the front fork includes a front support arm, and the front support arm includes a first section and a second section bent to each other, the first section is connected with the steering member, and the second section is connected with the front wheel. The first segment and the second segment constitute the first relief structure; or the front fork includes two front support arms spaced apart, each of the front support arms including a first bent a section and a second section, the first section being coupled to the steering member, the second section being coupled to the front wheel, the spacing between the two of the front support arms, and the first segment and the second segment forming the first A evasive structure.

[0015] Further, the folding cart further includes a middle shaft and two pedal assemblies, the middle shaft is rotatably mounted on the rear fork, and one of the pedal assemblies includes an adapter, a pedal and a crank. The adapter is fixedly coupled to the central shaft, one end of the crank is connected to the pedal, and the other end is hinged to the adapter, and the pedal is embedded in the front wheel and in the folded state Between the rear wheels.

Advantageous effects of the invention

Beneficial effect

[0016] In contrast to the prior art, the present invention provides a folding cart having a front and a rear portion that are coupled to each other. The front fork is rotatably coupled to the steering member and is rotatable toward the rear to fold the front wheel. To the rear; the rear fork is rotatably coupled to the rear end of the frame and is rotatable forwardly so that the rear wheel is folded to the front and spaced apart from the front wheel, the front fork has a folded state and a rear wheel a first avoiding structure in which the component avoids, the rear fork has a second avoiding structure that avoids the front wheel assembly in a folded state, so that the front wheel can be folded to the vehicle The rear and rear wheels of the frame can be folded to the front of the frame, that is, the front and rear wheels are folded and folded together, so that they have a long front fork and a rear fork, so that there is a large front and rear wheelbase after the swing, riding Comfortable and safe, and because the folding frame, front fork and rear fork are all around the front and rear wheels, it is compact, small in size and regular in shape, especially thin, easy to store and carry;吋 Only need to lift the frame up to make it volley, the rear and rear forks, the front wheel and the front fork are automatically opened under the action of gravity, which is convenient and quick to operate.

Brief description of the drawing

DRAWINGS

1 is a perspective view showing a state in which a folding bicycle is provided in an embodiment of the present invention;

2 is a top plan view showing a state in which a folding bicycle is provided in an embodiment of the present invention;

3 is a perspective view showing a folded state of a front wheel assembly of a folding bicycle according to an embodiment of the present invention;

4 is a top plan view showing a folded state of a front wheel assembly of a folding bicycle according to an embodiment of the present invention; [0020] FIG.

[0021] FIG. 5 is a perspective view showing a folded state of a folding bicycle according to an embodiment of the present invention;

6 is a top plan view showing a folded state of a folding cart according to an embodiment of the present invention;

7 is a perspective view showing a state in which a folding bicycle is provided in a second embodiment of the present invention;

[0024] FIG. 8 is a top plan view showing the state in which the folding bicycle is deployed according to the second embodiment of the present invention;

9 is a perspective view showing a folded state of a front wheel assembly of a folding bicycle according to Embodiment 2 of the present invention;

Figure 10 is a perspective view showing the folded state of the vehicle provided in the second embodiment of the present invention;

[0027] FIG. 11 is a top plan view showing a folded state of a folding vehicle provided by an embodiment of the present invention;

[0028] FIG. 12 is a perspective view showing the state of the folding of the vehicle provided in the third embodiment of the present invention;

[0029] FIG. 13 is a top plan view showing the state of the folding of the vehicle provided in the third embodiment of the present invention;

[0030] FIG. 14 is a perspective view showing the folded state of the front wheel assembly of the folding vehicle provided by the third embodiment of the present invention;

[0031] FIG. 15 is a perspective view showing the folding state of the vehicle provided in the third embodiment of the present invention;

[0032] FIG. 16 is a front elevational view showing the folded state of the folding vehicle provided by the fourth embodiment of the present invention;

FIG. 17 is a front elevational view showing the folded state of the vehicle according to the fifth embodiment of the present invention; FIG.

[0034] FIG. 18 is a perspective view showing the folded state of the vehicle provided by the embodiment of the present invention.

Embodiments of the invention The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the described embodiments of the present invention without departing from the scope of the invention are within the scope of the invention.

[0036] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the implementation of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] For convenience of description, the following refers to "front", "back", "left", "right", "upper" and "lower", which are based on the various directions of the folding frame, and the X in front of the frame in FIG. The axis direction is "front", the Y-axis direction is "right", and the z-axis direction is "up,,.

[0038] Unless otherwise defined, technical terms or scientific terms used herein shall be taken in the ordinary meaning as understood by those having ordinary skill in the art to which the invention pertains. The words "first", "second" and similar terms used in the specification and claims of the present invention are not intended to indicate any order, quantity or importance, but merely to distinguish different components. Similarly, the words "a" or "an" and the like do not denote a quantity limitation, but rather mean that there is at least one.

Embodiment 1

[0040] As shown in FIGS. 1 to 6, the folding bicycle 100 provided in this embodiment may be a bicycle or electric vehicle with a large wheelbase. Of course, the structure is also adapted to a bicycle or electric vehicle with a small wheelbase. A small wheelbase bicycle or electric vehicle folds into a smaller volume.

1 to 6, the above-described folding bicycle 100 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 are foldable with the frame 10. The frame 10 includes a front portion 11 and a rear portion 12 that are connected to each other. The front wheel assembly 30 includes a front fork 31 and a front wheel 32 disposed on the front fork 31. The front fork 31 is rotatably coupled to the steering member 20. And the front wheel 32 can be folded to the rear portion 12 by rotating the rear portion 12; the rear wheel assembly 40 includes a rear fork 41 and a rear wheel 42 disposed on the rear fork 41, and the rear fork 41 is rotatably coupled to the vehicle The rear end of the frame 10 is rotatable in the front portion 11 so that the rear wheel 42 is folded to the front portion 11 and spaced apart from the front wheel 32; the front fork 31 has a first escape from the rear wheel assembly 40 in the folded state. With the relief structure 33, the rear fork 41 has a second relief structure 43 that avoids the front wheel assembly 30 in the folded state. It is easy to understand that the front wheel 32 and the rear wheel 42 can be respectively in the extended position and folded by the rear fork 41. The stacking position is swung relative to the frame 10, and in the unfolded state, the front fork 31 and the rear fork 41 are respectively swung to the front side and the rear side of the frame 10, and the front wheel 32 and the rear wheel 42 are respectively located at the front side and the rear 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 portion 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 folded position of the front portion 11; the first relief structure 33 on the front fork 31 allows the front fork 31 to be evaded from the rear wheel 42 and the rear fork 41 during the swinging of the spreading and folding, on the rear fork 41 The second relief structure 43 can prevent the rear fork 41 from escaping with the front wheel 32 and the front fork 31 during the swinging process of the spreading and folding, thus ensuring that the front and rear wheel assemblies 30, 40 do not overlap each other when folding and unfolding Interference, in turn, allows the folding cart 100 to smoothly fold and unfold.

1 to 6, the frame 10 has a receiving space 10a for accommodating the front wheel 32 and the rear wheel 42, and the receiving space 10a is divided into a front side space 10b corresponding to the front portion 11 and corresponding to the rear portion 12. The rear side space 10c, the front wheel 32 is folded into the rear side space 10c in the folded state, and the rear wheel 42 is folded into the front side space 10b in the folded state. It can be understood that, since the folding cart 100 is folded and unfolded with respect to the swing of the front and rear forks 31, 41 with respect to the frame 10, the folded position of the front wheel 32 is located in the rear side space 10c, and the folded position of the rear wheel 42 is located in front. In the side space 10b, in this way, since the front and rear wheels 32, 42 are staggered so as to have long front and rear forks 31, 41, the rear folding bicycle 100 has a large front and rear wheelbase, which is comfortable and safe to ride; The frame 10 and the front and rear forks 31, 41 are all around the front and rear wheels 32, 42 so that the folding cart 100 is extremely small in size, particularly thin, compact, and regular in shape, and is easy to carry.

1 to 6, the frame 10 includes a front mount 13, a rear mount 14, and a main beam 15 connected therebetween. The steering member 20 is disposed in the front mount 13, and the rear fork 41 is rotatable. Connected to the lower end of the rear mount 14; the rear mount 14 may be a riser, the seat post 91 is telescopically mounted in the rear mount 14; the seat post 91 is provided with a saddle 90; the saddle is folded As the seat post 91 retracts and eventually rests above the front wheel 32, the folded volume is made smaller. The longitudinal axis 13a of the front mount 13 and the longitudinal axis 14a of the rear mount 14 together define a longitudinal center plane PP from which the main beam 15 extends from the front mount 13 to the rear mount 14 and offset from the longitudinal center plane PP; The rear mount 14 and the main beam 15 are collectively enclosed to form the accommodating space 10a. In this embodiment, the number of the main beams 15 is but not limited to two, and the two main beams 15 respectively extend from the front mounting seat 13 to the rear mounting seat 14, and the two main beams 15 are left in a folded state. a predetermined spacing for the front and rear wheels 32, 42 to pass through, 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, in the folded state, the front and rear wheels 32, 42 swings through the front and rear forks 31, 41, respectively In the accommodating space 10a, the front wheel 32 is located at the rear side of the rear wheel 42, and the two are spaced apart, and the front and rear forks 31, 41 are respectively swung below the main beam 15, so that the main beam 15 is placed in the folded state. The sides of the front and rear wheels 32, 4 2 make the folded volume smaller.

[0044] In still another embodiment, the number of the main beams 15 is one, and the front mounting seat 13 extends from the front mounting seat 14 and deviates from the longitudinal center plane PP, and may be located on the left or right side of the longitudinal center plane PP. In the folded state, the front and rear wheels 32, 42 are located on the right or left side of the main beam 15.

1 to 6, the folding bicycle 100 of the present embodiment has a longitudinal folding structure, and the front fork 31 is coupled to the steering member 20 via a first hinge shaft 16 and the rear fork 41 is coupled to the rear mounting portion via a second hinge shaft 17. The axis 14 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 is rotatable relative to the axis of the first hinge shaft 16 20 swinging up and down, thereby driving the front wheel 3 2 to swing up and down with respect to the frame 10, and the rear fork 41 can swing up and down with respect to the rear mounting seat 14 about the axis of the second hinge shaft 17, thereby driving the rear wheel 42 to swing up and down with respect 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 stretching and folding process, the movement trajectories of the centers of the front and rear wheels 32, 42 are all on the longitudinal center plane PP, so that in the folded state, the centers of the front and rear wheels 32, 42 are in the two mains. In the middle of the beam 15, the display only needs to lift the frame upwards to make it volley, and the rear and rear forks, the front wheel and the front fork are automatically unfolded under the action of gravity, and the operation is quick and convenient.

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 front support arms 34 is but not limited to two, and two front supports The arms 34 are spaced apart from the longitudinal center plane PP, each front support arm 34 including a first section 341 and a second section 342 that are bent to each other, the first section 341 being coupled to the steering member 20, the second section 342 and the front wheel 32 Connecting, the spacing between the two front support arms 34 and the first section 341 and the second section 342 constitute a first relief structure 33; the rear fork 41 comprises two rear support arms 44 spaced apart from the longitudinal center plane PP, two The spacing between the rear support arms 44 constitutes a second relief 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 the side and the rear support arm 44 on the side, and the upper portion of the front wheel 32 is folded into the two main beams 15 The rear side space 10c is disposed on the rear fork 41 via the second relief structure 43. The rear axle of the rear wheel 42 is received in the bend of the first section 341 and the second section 342, and the upper portion of the rear wheel 42 The front side space 10b between the two main beams 15 is folded by the two front support arms 34. It can be understood that the front fork 31 is housed in the space between the main beam 15 and the rear fork 41, reducing the overall thickness after folding. [0047] In yet another embodiment, the number of front support arms 34 is one, the front support arms 34 are offset from the longitudinal center plane PP described above, and the number of rear support arms 44 is two.

In still another embodiment, the number of front support arms 34 is two, and the number of rear support arms 44 is one, and the rear support arms 44 are offset from the longitudinal center plane P-P described above.

Referring to FIGS. 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 in a folding frame, and the cover member may be soft in a changeable shape. A cloth, or a cover having 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 variable shape, which is fixed between the two main beams 15, so that in the folded state, the front and rear wheels 32, 42 can be wrapped around the main beam. On the part of 15, it is possible to prevent the wheel from soiling the user and components such as handles and handles.

1 to 6, the folding bicycle 100 of the present embodiment further includes a pair of handlebar assemblies 50 symmetrically disposed, each handlebar assembly 50 including a handle 51 and a handle 52, and one end of the stand 52 is turned The member 20 is hinged, and the other end is hinged to the inner end of the handle 51; a predetermined spacing between the upper portions 52 for the upper portion of the front wheel 32 and the upper portion of the rear wheel 42 in the folded state is left; In the squat state, the two handles 51 are disposed substantially perpendicular to the longitudinal center plane PP described above at the unturned 吋; the 吋, the two handles 51 are respectively rotated about the hinge axis of the yoke 52 and the position of the shaft 52 to be parallel to each other, The two armatures 52 are rotated about the hinged axial frame 10 of the steering member 20 and finally the two sets of handlebar assemblies 50 are respectively adjacent to the sides of the front and rear wheels 32, 42. Between the stand 52 and the main beam 15 and the outer end thereof is directed to the rear end of the frame 10; the beneficial effect is that the folded volume is made smaller, especially thinner.

[0051] Referring to FIGS. 1 to 6, as a further optimization, a rear fork support 60 is disposed between the rear fork 41 and the frame 10, one end of the rear fork support 60 is hinged to the rear fork 41, and the other end is movably connected to the vehicle. Shelf 10. The rear fork support 60 may be a bracket having a certain strength or a shock absorber having an elastic suspension 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. The elastic member always provides a free end for driving the rear fork support member 60. The force abutting against the hinge of the rear fork 41 and the frame 10 is expanded, and the free end of the rear fork support 60 moves along the rear mount 14 under the action of the elastic member and finally abuts on the rear mount 14. In the folded state, the free end of the rear fork support 60 is automatically folded under the action of the elastic member to the folded end of the rear fork 41 (ie, the end of the rear fork 41 hinged to the frame 10) Rely on, so that folding is quick and easy, and the volume after folding is reduced.

[0052] Referring to FIGS. 1 through 6, as further optimized, the folding cart 100 of the present embodiment further includes a center shaft 70 and a left The right two pedal assemblies 80, the center shaft 70 is rotatably disposed on the rear fork 41, the right pedal assembly may be any pedal assembly in the prior art, and the left pedal assembly 80 includes an adapter 81, a pedal 82, and a crank 83. The adapter 81 is fixedly coupled to the center shaft 70, one end of the crank 83 is coupled to the pedal 82, and the other end is hinged to the adapter member 8 1; the folding jaws are rotated about the hinge axis of the adapter member 81 by 180 degrees and The pedal 82 is embedded between the front wheel 32 and the rear wheel 42, so that the crank 83 is prevented from protruding from the rear end of the frame and the pedal 82 is well accommodated, so that the structure is more compact and smaller.

Example 2

[0054] Only the differences from the foregoing embodiments will be described in detail below with reference to FIGS. 7 to 11.

7 to 11, the folding bicycle 100 of the present embodiment has a lateral folding structure, and the frame 10 includes a front mounting seat 13, a rear mounting seat 14, and a main beam 15 connected therebetween, and the steering member 20 is disposed. In the front mount 13, the longitudinal axis 13a of the front mount 13 and the longitudinal axis 14a of the rear mount 14 together define a longitudinal center plane PP. The number of main beams 15 is but not limited to one, and the main beam 15 is installed from the front. The seat 13 extends rearwardly from 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 to form the receiving space 10a

7 to 11, the front fork 31 includes a front support arm 34, and the rear fork 41 includes a rear support arm 44. The number of front support arms 34 is but not limited to one, and the front support arm 34 is oriented from the steering member 20 The front wheel 32 extends and is offset from the longitudinal center plane PP to form a first relief structure 33; the number of rear support arms 44 is but not limited to one, and the rear support arm 44 extends from the rear mount 14 to the rear wheel 42 and deviates from the longitudinal direction. The center plane PP is disposed to constitute the second relief structure 43. The front fork 31 is coupled to the steering member 20 via a first hinge shaft 16, and the rear fork 41 is coupled to the rear mount 14 via a second hinge shaft 17.

[0057] Specifically, the axis of the first hinge shaft 16 is parallel to the longitudinal center plane PP, and the first hinge shaft 16 extends downward from the steering member 20 and toward the rear portion 12 of the frame 10, and the second hinge shaft 17 The axis is parallel to the longitudinal center plane PP, and the second hinge shaft 17 extends downwardly from the rear mount 14 and toward the front portion 11 of the frame 10, that is, the front fork 31 is relatively rotatable about the axis of the first hinge shaft 16. The member 20 is swung left and right to drive the front wheel 32 to swing left and right with respect to the frame 10, thereby swinging the rear wheel 42 into the rear side space 10c in the folded state. The rear fork 41 can swing left and right relative to the rear mounting seat 14 about the axis of the second hinge shaft 17 to drive the rear wheel 42 to swing left and right relative to the frame 10, thereby swinging the rear wheel 42 into the front side space 10b in the folded state. After the front and rear wheels 32, 42 are swung up into the accommodating space 10a of the frame 10, the folding cart 100 is brought into a folded state 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 all on the longitudinal center plane PP.

[0058] Of course, the structure and folding manner of the front wheel assembly or the rear wheel assembly may also be the structure and mode of the first embodiment.

Embodiment 3

[0060] Only the differences from the foregoing embodiments will be described in detail below with reference to FIGS. 12 to 15.

Referring to FIGS. 12 to 15, the folding bicycle 100 of the present embodiment employs a side sill structure including a frame 10, a steering member 20 rotatably mounted at the front end of the frame 10, and capable of folding with the frame 10 The front wheel assembly 30 and the rear wheel assembly 40, wherein the frame 10 includes a front mount 13, a rear mount 14, and a main beam 15 connected therebetween, and the number of the main beams 15 is but not limited to one. The main beam 15 extends from the front mount 13 to the rear mount 14. The steering member 20 is disposed in the front mount 13, and the front mount 13, the rear mount 14, and the main beam 15 are enclosed to form a receiving space 10a, which is located at one side of the frame 10. The longitudinal axis 13a of the front mount 13 and the center of the rear wheel 42 in the deployed state define a longitudinal center plane P'-P', and the front fork 31 is coupled to the steering member 20 via the first hinge shaft 16, first A first predetermined angle A1 is formed between the extending direction of the hinge shaft 16 and the direction perpendicular to the longitudinal center plane P'-P', so that the front wheel 32 is in the mid-section of the front wheel 32 in the unfolded state (ie, The axial center plane of the front wheel 32 coincides with the longitudinal center plane P'-P'; the rear fork 41 is coupled to the rear mount 14 by the second hinge shaft 17, and the second hinge shaft 17 extends in a direction perpendicular to the longitudinal center plane A second predetermined angle A2 is formed between the directions of P'-P' such that the rear wheel 42 is in the deployed state, the middle facet of the rear wheel 42 (i.e., the axial center plane of the rear wheel 42) and the longitudinal center. Faces P'-P' coincide. It is easy to understand that, when the first and second preset angles A1, A2 are smaller, the folding cart 100 is substantially longitudinally folded, that is, the front fork 31 can swing up and down relative to the steering member 20 about the axis of the first hinge shaft 16. In order to drive the front wheel 32 to swing up and down with respect to the frame 10, thereby swinging the rear wheel 42 into 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 about the axis of the second hinge shaft 17 In order to drive the rear wheel 42 to swing up and down with respect to the frame 10, the rear wheel 42 is swung into 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 located in the longitudinal center plane P'-P', that is, in the state of being stretched. The middle facet of the wheel 32 is on the same plane as the middle facet of the rear wheel 42; while in the folded state, the front wheel assembly 30 and the rear wheel assembly 40 are all located on one side of the frame 10.

[0062] Of course, when the first and second preset angles A1, A2 are larger, the folding cart 100 is substantially a horizontally folded structure. That is, the front fork 31 can swing left and right relative to the steering member 20 about the axis of the first hinge shaft 16 to drive the front wheel 32 to swing left and right relative to the frame 10; the rear fork 41 can be opposite to the rear mounting seat 14 about the axis of the second hinge shaft 17. Swinging left and right to drive the rear wheel 42 to swing left and right relative to the frame 10.

[0063] 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 front support arms 34 is, but not limited to, one, and the front support arms 34 include a first section 341 and a second section 342 that are bent to each other, the first section 341 is coupled to the steering member 20, and the second section 342 is coupled to the front wheel 32, the first segment 341 extends obliquely from the steering member 20 to the front axle and the outer side of the front wheel 32. The first segment 341 and the second segment 342 constitute a first relief structure 33. In the folded state, the rear wheel 42 is rearward. The shaft is received at a bend of the first section 341 and the second section 342. The number of rear support arms 44 is, but not limited to, one, and the rear support arms 44 include a third section 441 and a fourth section 442 that are bent to each other, the third section 441 is connected to the rear mount 14, and the fourth section 442 is The rear wheel 42 is connected, and the third segment 441 extends obliquely from the rear mount 14 to the rear axle and to the outer side of the rear wheel 42, and the third segment 441 and the fourth segment 442 constitute the second relief structure 43. It can be understood that the front mount 13, the rear mount 14 and the main beam 15 are located on one side of the front and rear wheels 32, 42 so that the volume is smaller. Further, the length of the main beam 15 is not limited by the diameters of the front and rear wheels 32, 42, so that in the structure in which the front and rear wheels 32, 42 having a larger diameter are used, the main beam having a shorter length can be used.

12 to 15, the folding cart 100 of the present embodiment further has a handle 51 and a handle 52, one end of the handle 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 The 51 and the handle 52 are parked on one side of the front and rear wheels 32, 42 so that the folded volume is smaller.

Example 4

[0066] Only the differences from the foregoing embodiments will be described in detail below with reference to FIG.

Referring to FIG. 16, the frame 10 includes a main beam 15, and both ends of the main beam 15 are installed at the upper ends of the front mount 13 and the rear mount 14, so that the main beam and the front mount 13 and the rear mount 14 The accommodating space for accommodating the front and rear wheel assemblies 30, 40 is surrounded by the main beam 15 above the front and rear wheels 32, 42 in the folded state.

Example 5

[0069] Only the differences from the foregoing embodiments will be described in detail below with reference to FIG.

Referring to FIG. 17, the frame 10 includes a main beam 15, and both ends of the main beam 15 are installed at the upper ends of the front mounting seat 13 and the rear mounting seat 14, and the bottom surface of the main beam 15 is connected to the receiving space. A groove (not shown) is folded into the groove in the folded state, so that the folded volume is smaller. Example 6

[0072] Only the differences from the foregoing embodiments will be described in detail below with reference to FIG.

Referring to FIG. 18, the folding bicycle 100 of the present embodiment further includes a pair of handlebar assemblies 50 symmetrically disposed, each handlebar assembly 50 including a handle 51 and a handle 52, one end of the handle 52 and the steering member 20 Hinged, the other end is hinged to the inner end of the handle 51; a predetermined spacing between the upper portions 52 for the upper portion of the front wheel 32 and the upper portion of the rear wheel 42 in the folded state is left; The two handles 51 are disposed substantially perpendicular to the longitudinal center plane PP described above; the folding handles, the two handles 51 respectively rotate downward about the hinge axis of the shaft 52 and the position of the shaft 52 until they are parallel to each other, two handles The stand 52 rotates about the hinged axial frame 10 of the steering member 20 and finally causes the two sets of handlebar assemblies 50 to be respectively on either side of the front and rear wheels 32, 42. The two handles 51 are located on the handle 52. Between the main beam 15 and the outer end thereof is directed toward the front end of the frame 10; such an advantageous effect is that in the structure of the main beam 15 of the same length, the length of the stand 52 can be designed to be longer and the ride is more comfortable.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included in the present invention. Within the scope of protection of the invention.

Claims

Claim

[Claim 1] A folding bicycle comprising a frame, a steering member rotatably mounted at a front end of the frame, and a front wheel assembly and a rear wheel assembly foldable from the frame, wherein the vehicle The frame includes front and rear portions connected to each other; the front wheel assembly includes a front fork and a front wheel disposed on the front fork, the front fork being rotatably coupled to the steering member, and a rear rotation 吋 folds the front wheel to the rear portion; the rear wheel assembly includes a rear fork and a rear wheel disposed on the rear fork, the rear fork being rotatably coupled to the rear end of the frame And rotating to the front portion to fold the rear wheel to the front portion and spaced apart from the front wheel; the front fork has a first avoiding structure that avoids the rear wheel assembly in a folded state, The rear fork has a second evasive structure that avoids the front wheel assembly in a folded state.

[Claim 2] The folding bicycle according to claim 1, wherein 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 corresponding front side space and a rear side space corresponding to the rear part, the front wheel being folded into the rear side space in a folded state, the rear wheel being folded to the front side in a folded state Within the space.

[Claim 3] The folding bicycle according to claim 2, wherein the frame includes a front mount

a rear mounting seat and at least one main beam connected therebetween, the steering member being disposed in the front mounting seat, the rear fork being rotatably coupled to the rear mounting seat; the front mounting seat a longitudinal axis that defines a longitudinal center plane with the longitudinal axis of the rear mount, at least one of the main beams extending from the front mount to the rear mount and offset from the longitudinal center plane; The mounting seat, the rear mounting seat and the main beam are enclosed to form the receiving space.

[Claim 4] The folding bicycle according to claim 3, wherein the main beam is provided with a cover member that at least partially surrounds the front wheel and the rear wheel at a folding frame.

[Claim 5] The folding bicycle according to claim 1, wherein the frame includes a front mounting seat and a rear mounting seat, a steering member is disposed in the front mounting seat, and a longitudinal direction of the front mounting seat An axis defining a longitudinal center plane together with a longitudinal axis of the rear mount, the front fork being coupled to the steering member by a first hinge shaft, the rear fork being coupled to the rear mount by a second hinge shaft The axis of the first hinge axis is perpendicular or parallel to the longitudinal center plane, the second The axis of the hinge shaft is perpendicular or parallel to the longitudinal center plane.

[Claim 6] The folding bicycle according to claim 2, wherein the frame includes a front mount

a rear mounting seat and a main beam connected therebetween, the steering member being disposed in the front mounting seat; a longitudinal axis of the front mounting seat and a center of the rear wheel in an unfolded state a longitudinal center plane, the receiving space is located at one side of the frame; the front fork is coupled to the steering member by a first hinge shaft, and the first hinge shaft extends in a direction perpendicular to the longitudinal direction Forming a first predetermined angle between the directions of the center faces such that the front face of the front wheel coincides with the longitudinal center plane in the unfolded state; the rear fork is connected to the rear by the second hinge shaft a mounting seat, a second predetermined angle formed between the extending direction of the second hinge shaft and a direction perpendicular to the longitudinal center plane, so that the rear wheel is in the mid-section and the longitudinal direction of the rear wheel in the unfolded state The center plane coincides.

[Claim 7] The folding cart according to claim 1, further comprising a pair of handlebar assemblies symmetrically disposed, each handlebar assembly including a handle and a handle, the stem end and the seat The steering member is hinged, and the other end is hinged to the inner end of the handle. The two handles are parallel to each other in a folded state, and the two handles are left in a folded state for the front wheel and the rear wheel. a predetermined spacing that is partially passed out, and is rotatable relative to the frame about the hinge of the steering member and the steering member, and two of the handlebar assemblies are respectively rotated to the front in a folded state Both sides of the wheel and the rear wheel.

[Claim 8] The folding bicycle according to claim 1, wherein a rear fork support is disposed between the rear fork and the frame, and one end of the rear fork support is hinged to the rear a fork, the other end is movably connected to the frame; an elastic member is disposed between the rear fork support and the rear fork for swinging the rear fork support to the rear fork; a rear fork support The piece rests on the rear fork in the folded state.

[Claim 9] The folding bicycle according to claim 2, wherein the front fork includes a front support arm, and the front support arm includes first and second sections bent to each other, first The segment is connected to the steering member, the second segment is connected to the front wheel, and the first segment and the second segment constitute the first avoidance structure;

Alternatively, the front fork includes two front support arms that are spaced apart, and each of the front support arms And including a first segment and a second segment bent to each other, the first segment being coupled to the steering member, the second segment being coupled to the front wheel, the spacing between the two of the front support arms, and the first segment and the first segment The second segment constitutes the first avoidance structure.

[Claim 10] The folding bicycle according to claim 1, further comprising a center shaft and two pedal assemblies, wherein the center shaft is rotatably mounted on the rear fork, one of the pedals The assembly includes an adapter, a pedal and a crank, the adapter is fixedly coupled to the central shaft, one end of the crank is coupled to the pedal, and the other end is hinged to the adapter, the pedal is in a folded state The lower portion is buried between the front wheel and the rear wheel.