CN211417501U

CN211417501U - Foldable two-wheel vehicle

Info

Publication number: CN211417501U
Application number: CN201921815192.6U
Authority: CN
Inventors: 梁德
Original assignee: Shanghai Minden Industrial Technology Co ltd
Current assignee: Shanghai Minden Industrial Technology Co ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-09-04
Anticipated expiration: 2029-10-28

Abstract

The utility model provides a foldable two-wheeled vehicle, which comprises a frame unit, a front fork unit, a front wheel unit, a rear fork unit, a rear wheel unit, a handlebar unit and a saddle unit, wherein the frame unit and the front fork unit are both foldable structures and are movably connected; the rear fork unit is detachably connected with the frame unit through a first connecting piece and is hinged with the frame unit through a second connecting piece, namely, the rear fork unit can be turned over forwards; the front wheel unit is arranged on the front fork assembly, and the rear wheel unit is arranged on the rear fork unit; the handlebar unit is connected with the top end of the upper tube assembly in an installing mode, and the saddle unit is connected with the top end of the seat tube in an installing mode. After the automobile body is folded, the rear wheel unit is located frame unit below, and front wheel unit and rear wheel unit keep the parallel state and connect through the hook between the two to realize more reasonable spatial layout. This folding scheme is owing to need not folding standing and handlebar, can realize better locomotive intensity, compacter folding volume and more convenient folding performance.

Description

Foldable two-wheel vehicle

Technical Field

The utility model relates to a two wheeler technical field especially relates to a collapsible two wheeler.

Background

The folding bicycle or the folding electric bicycle in the market at present basically does not leave the folding handlebar or the folding handlebar in the arrangement of the folding scheme, the two parts are the most important parts for steering operation during riding, and the rigidity and the strength of the related parts are greatly reduced due to the existence of the folding mechanism, so that the riding experience and the reliability are influenced to a certain extent; on the other hand, in almost all folding bicycles, after folding, the type of handlebar chosen determines whether the folding state of the bicycle body is compact enough, for example, if a road-bent type handlebar is used, it is difficult to achieve a compact folding volume, which greatly limits the types of handlebars that can be selected; in addition, when the foldable two-wheeled vehicle performs folding operation, most types of foldable two-wheeled vehicles have different operation difficulties, the spatial layout of each part after folding is not reasonable, the space between two wheel sets and the peripheral space of the two wheel sets are not utilized to the maximum extent, and the folding shape is not neat enough; finally, in a product adopting a turnover rear fork mode, the movable connection mode of the rear fork and the frame cannot be convenient and stable.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a collapsible two wheeler, the vertical and horizontal all need not fold, simple structure, it is folding convenient, compact folding volume.

In order to achieve the above object, the present invention provides a foldable two-wheeled vehicle, comprising a frame unit (1), a front fork unit (2), a front wheel unit (3), a rear fork unit (4), a rear wheel unit (5), a handlebar unit (6) and a seat unit (7), wherein:

the frame unit (1) is of a foldable structure, the frame unit (1) comprises a head pipe assembly (11), a seat pipe assembly (12) and a frame hinge piece (13), the head pipe assembly (11) comprises a head pipe (111) and a front girder which are fixedly connected, the seat pipe assembly (12) comprises a seat pipe (121) and a rear girder which are fixedly connected, and the front girder and the rear girder are hinged through the frame hinge piece (13);

the front fork unit (2) is of a foldable structure, the front fork unit (2) comprises a front fork assembly (21), an upper pipe assembly (22) and a front fork hinge piece (23), the front fork assembly (21) and the upper pipe assembly (22) are hinged through the front fork hinge piece (23), and the upper pipe assembly (22) is movably connected with the head pipe assembly (11);

the top end of one side, opposite to the frame unit (1), of the rear fork unit (4) is provided with a first connecting piece, the bottom end of the side opposite to the frame unit (1) is provided with a second connecting piece, the rear fork unit (4) is detachably connected with the top end of the seat tube (121) through the first connecting piece, and the rear fork unit (4) is hinged with the bottom end of the seat tube (121) through the second connecting piece;

the front wheel unit (3) is mounted on the front fork assembly (21), and the rear wheel unit (5) is mounted on the rear fork unit (4); handlebar unit (6) with the top end erection joint of upper tube subassembly (22), saddle unit (7) with the top end erection joint of seat pipe (121).

Preferably, in the foldable two-wheeled vehicle, an inclined section is arranged between the front girder and the rear girder, and an included angle between the section and the axis of the front girder is a;

the frame hinge piece (13) is a frame hinge, the frame hinge comprises a front leaf (131) and a rear leaf (132), the front leaf (131) is fixed on the section of the front girder, and the rear leaf (132) is fixed on the section of the rear girder; when the frame hinge is turned over and opened by 180 degrees, the head pipe assembly (11) is turned over relative to the seat pipe assembly (12), and the plane where the head pipe assembly (11) is located is parallel to the plane where the seat pipe assembly (12) is located.

Preferably, in the foldable two-wheeled vehicle, a is in the range of 35 ° to 55 °.

Preferably, in the foldable two-wheeled vehicle, the seat tube assembly (12) further comprises a seat tube base (122), a seat tube clamp (123) and a reinforcing rod (127);

the seat pipe clamp (123) is fixed at the top end of the seat pipe (121), and the seat unit (7) is fastened through the seat pipe clamp (123);

the seat tube base (122) is fixed at the bottom end of the seat tube (121), the seat tube base (122) is provided with five through holes (1221) and a rotating shaft hole (1222), and the second connecting piece is hinged with the seat tube base (122) through the rotating shaft hole (1222);

one end of the reinforcing rod (127) is welded on the bottom side of the rear girder, and the other end of the reinforcing rod is welded on the seat tube base (122).

Preferably, in the foldable two-wheeled vehicle, a chain stopping wheel (128) is arranged at the bottom end of the seat tube assembly (12).

Preferably, in the foldable two-wheeled vehicle, the rear fork unit (4) has a triangular structure, the rear fork unit (4) comprises an upper fork (41), a lower fork (42) and a support beam (43), the upper fork (41) and the lower fork (42) are connected with each other at one end provided with a yoke, the other ends of the upper fork (41) and the lower fork (42) are respectively connected with two ends of the support beam (43), the end of the upper fork (41) is provided with the first connecting piece, and the end of the lower fork (42) is provided with the second connecting piece.

Preferably, in the foldable two-wheeled vehicle, a connecting rotating shaft (124) is installed at the top end of the seat tube (121), the connecting rotating shaft (124) is perpendicular to the plane of the frame unit (1), a hinged tightening buckle (125) is arranged on the connecting rotating shaft (124), and a hook-shaped structure buckle is arranged on the tightening buckle (125);

the second connecting piece is a U-shaped plug-in (411), grooves are formed in two ends of the U-shaped plug-in (411), and the grooves are inserted and clamped in two ends of the connecting rotating shaft (124);

an easy wheel shaft (44) is arranged on the upper end fork frame (41), the easy wheel shaft (44) is perpendicular to the plane of the frame unit (1), easy wheels (45) are mounted at two ends of the easy wheel shaft (44), and an elastic sleeve (46) is sleeved in the middle of the easy wheel shaft (44);

the tightening buckle (125) is buckled on the elastic sleeve (46) through the hook-shaped structure clasp, so that the upper end fork frame (41) is in hooked connection with the seat pipe (121).

Preferably, in the foldable two-wheeled vehicle, one end of the tightening buckle (125) is hinged with the connecting rotating shaft (124), the other end of the tightening buckle is provided with a rear mudguard (126), and the rear mudguard (126) is movably connected with the tightening buckle (125); the rear mudguard (126) is propped against the outer side of the rear fork unit (4), namely, the rear mudguard (126) is positioned above the rear wheel unit (5) and is not contacted with the rear wheel unit.

Preferably, in the foldable two-wheeled vehicle, the supporting beam (43) is provided with a catch wheel (47), and the catch wheel (47) can move up and down along the direction of the supporting beam (43).

Preferably, in the foldable two-wheeled vehicle, the catch wheel (47) comprises two symmetrically-locked brackets (471) and a roller (472), the roller (472) is arranged at one end of each bracket (471), the other end of each bracket is locked on the supporting beam (43) through a screw (473), and the roller (472) faces away from the rear wheel unit (5).

Preferably, in the foldable two-wheeled vehicle, a claw (48) with a downward opening is provided on the outer side of the rear fork unit (4), and the claw (48) is hooked on the front fork assembly (21) when the vehicle body is completely folded.

Preferably, in the foldable two-wheeled vehicle, the rear fork unit (4) is provided with a seat post catch (49) facing horizontally outward, and the seat unit (7) is fixed to the seat post catch (49) when the vehicle body is completely folded.

Preferably, in the foldable two-wheeled vehicle, the handlebar unit (6) comprises a handlebar stand component (61) and a handlebar cross component (62), one end of the handlebar stand component (61) is connected with the handlebar cross component (62) in a mounting mode, and the other end of the handlebar stand component (61) is connected with the top end of the upper pipe component (22) in a mounting mode.

Preferably, in the foldable two-wheeled vehicle, the stand assembly (61) comprises a stand quick-release wrench (611) and a stand pipe (612), the bottom end of the stand pipe (612) is sleeved outside the top end of the upper pipe assembly (22), and the stand quick-release wrench (611) connects and locks the stand pipe (612) and the upper pipe assembly (22);

a hanging core (223) is installed inside the upper pipe assembly (22), a countersunk head screw (617) is arranged on the vertical pipe (612), the countersunk head screw (617) penetrates into the upper pipe assembly (22) from the top end of the vertical pipe (612), and the countersunk head screw (617) is in threaded connection with the hanging core (223).

Preferably, in the foldable two-wheeled vehicle, the handlebar stand component (61) further comprises an upper cover (613) and a horizontal quick-release wrench (614), the top end of the handlebar stand pipe (612) is provided with a top seat (615), and the horizontal component (62) is clamped and fixed between the upper cover (613) and the top seat (615).

Preferably, in the foldable two-wheeled vehicle, the upper cover (613) is connected with a clamping groove or a screw at one end of the top seat (615), and the other end of the top seat is connected with the transverse quick-release wrench (614).

Preferably, in the foldable two-wheeled vehicle, a fixing ring (621) is arranged on the handlebar transverse component (62), and the fixing ring (621) is closely arranged on two sides of the handlebar vertical component (61).

Preferably, in the foldable two-wheeled vehicle, a rotary tray (8) is arranged on one side, back to the seat pipe assembly (12), of the head pipe assembly (11), the rotary tray (8) comprises a support (81), a tray (82) and a stabilizer bar (83), one end of the support (81) is provided with a threaded hole (811), the other end of the support is provided with a joint (812), a butting part (813) is arranged right below the joint (812), the joint (812) is hinged with the head pipe (111), and the butting part (813) butts against the head pipe (111);

a front mounting hole (821) and a rear mounting hole (822) are formed in the bottom side of the tray (82), the front mounting hole (821) is rotatably connected with the threaded hole (811), and the rear mounting hole (822) is rotatably connected with the head pipe (111);

the avris of support (81) is equipped with stabilizer bar (83), stabilizer bar (83) with support (81) swivelling joint, stabilizer bar (83) place the plane when rotatory with tray (82) place the plane is parallel to each other, the upper surface of stabilizer bar (83) with the bottom surface of tray (82) contacts and forms the support relation.

Preferably, collapsible two wheeler in, be equipped with fixing base (112) on head pipe (111), fixing base (112) with connect (812) articulated connection, fixing base (112) terminal surface is equipped with the boss, back mounting hole (822) cover is established on the boss, preceding mounting hole (821), back mounting hole (822), screw hole (811), joint (812) and fixing base (112) all are on same axis.

Preferably, in the foldable two-wheeled vehicle, a storage case (9) or a battery case is fixed to the inside of the head pipe assembly (11).

Compared with the prior art, the beneficial effects of the utility model are mainly embodied in that: the transverse component does not need to be folded, and a folding mechanism is not arranged between the transverse component and the upper pipe component, so that the rigidity and the strength of the transverse component are improved. When the vehicle body is folded, the handlebar unit is clamped between the front wheel and the rear wheel, the folding thickness is only the sum of the widths of the rear wheel and the front wheel, and the folding thickness reaches an optimal state. The transverse component is in a relatively loose space, namely the transverse component can adopt various models, does not occupy extra space, particularly a road bending handle, and can be well accommodated in the abundant space at the periphery of the seat pipe component.

Drawings

Fig. 1 is a schematic structural view of the foldable two-wheeled vehicle in the embodiment of the present invention in an unfolded state;

FIG. 2a is a schematic structural view of the frame unit in the expanded state according to the embodiment of the present invention;

FIG. 2b is a schematic structural view of the frame unit in a folded state according to the embodiment of the present invention;

FIG. 3a is a schematic structural view of the embodiment of the present invention in the unfolded state of the front fork unit;

FIG. 3b is a schematic structural view of the front fork unit in a folded state according to the embodiment of the present invention;

FIG. 4 is a schematic view of the connection structure of the rear fork unit and the frame unit according to the embodiment of the present invention;

FIG. 5 is a view showing an assembly structure of the rear fork unit and the rear wheel unit according to the embodiment of the present invention;

FIG. 6 is a schematic structural view of a catch wheel according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a handlebar unit according to an embodiment of the present invention;

FIG. 8a is a schematic structural diagram of a stem in an embodiment of the present invention;

FIG. 8b is a schematic structural diagram of a stem assembly according to an embodiment of the present invention;

fig. 9a is a schematic structural view illustrating a connection relationship between a rotary tray and a corresponding head pipe assembly according to an embodiment of the present invention;

FIG. 9b is a schematic view of the embodiment of the present invention showing the structure of the rotating tray after rotating

Fig. 9c is a schematic structural view of a bracket according to an embodiment of the present invention;

fig. 9d is a schematic structural view of a tray according to an embodiment of the present invention;

fig. 10 is a schematic structural view of the vehicle body in a folded state according to the embodiment of the present invention;

fig. 11 is a schematic structural view of the vehicle body folded state in the embodiment of the present invention.

Wherein: frame unit 1, head pipe assembly 11, head pipe 111, fixing seat 112, seat pipe assembly 12, seat pipe 121, seat pipe base 122, five-way hole 1221, rotating shaft hole 1222, seat pipe clamp 123, connecting rotating shaft 124, tension buckle 125, rear mudguard 126, reinforcing rod 127, chain blocking wheel 128, frame hinge 13, front leaf 131, rear leaf 132, front fork unit 2, front fork assembly 21, top pipe assembly 22, top pipe 221, fastening sleeve 222, suspension core 223, front fork hinge 23, top leaf 231, bottom leaf 232, front fork pin 233, front wheel unit 3, rear fork unit 4, upper end fork 41, U-shaped insert 411, lower end fork 42, hinge hole 421, support beam 43, free wheel shaft 44, free wheel 45, elastic sleeve 46, blocking wheel 47, bracket 471, roller 472, screw 473, hook 48, seat rod buckle 49, rear wheel unit 5, handlebar unit 6, handlebar stem assembly 61, vertical quick release pipe assembly 612, handle vertical pipe wrench, The upper cover 613, the horizontal quick-release wrench 614, the top seat 615, the counter bore 616, the countersunk screw 617, the handle horizontal assembly 62, the fixing ring 621, the seat unit 7, the rotary tray 8, the bracket 81, the threaded hole 811, the joint 812, the abutting portion 813, the tray 82, the front mounting hole 821, the rear mounting hole 822, the stabilizer bar 83, the rotary seat 84 and the storage box 9.

Detailed Description

The foldable two-wheeled vehicle of the invention will now be described in greater detail with reference to the schematic drawings, in which preferred embodiments of the invention are shown, it being understood that a person skilled in the art may modify the invention described herein while still achieving the advantageous effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.

In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "at least" means one or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected", if any, are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the present application, unless otherwise specified or limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.

The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

As shown in fig. 1, the utility model provides a collapsible two wheeler, including frame unit 1, front fork unit 2, front wheel unit 3, back fork unit 4, rear wheel unit 5, handlebar unit 6 and saddle unit 7, frame unit 1 and front fork unit 2 are beta structure, and back fork unit 4 is flip structure.

As shown in fig. 2a to 3b, the frame unit 1 includes a head pipe assembly 11, a seat pipe assembly 12, and a frame hinge 13, the head pipe assembly 11 including a head pipe 111 and a front side member, and the seat pipe assembly 12 including a seat pipe 121 and a rear side member. Specifically, a straight girder is used as a main body of the frame, and a head pipe 111 is welded to a front end of the girder at a vertical angle and a seat pipe 121 is welded to a rear end of the girder at a vertical angle. The middle part of the crossbeam close to the front is provided with a truncation surface, so that the crossbeam is truncated into two sections to form a front crossbeam and a rear crossbeam, the included angle between the truncation surface and the axis of the crossbeam is a, and the range of the a is 35-55 degrees. The section between preceding girder and the back girder is articulated connection through frame articulated elements 13 respectively, because the section is the slope structure, frame articulated elements 13 also is the slope setting promptly, consequently need not too wide thick girder can realize the longer structure of frame articulated elements 13, and longer frame articulated elements 13 length can provide higher intensity and rigidity. Preferably, the frame hinge 13 is a frame hinge, and the frame hinge includes a front leaf 131 and a rear leaf 132, the front leaf 131 is welded and fixed on the section of the front girder, and the rear leaf 132 is welded and fixed on the section of the rear girder. Further preferably, the included angle between the frame hinges and the side frame is 45 degrees, when the frame hinges are folded and opened by 180 degrees, the head pipe assembly 11 is turned over relative to the seat pipe assembly 12, the plane of the head pipe assembly 11 is parallel to the plane of the seat pipe assembly 12, at this time, the front side frame and the rear side frame form a mutually perpendicular positional relationship, and the head pipe 111 and the seat pipe 121 form a mutually perpendicular positional relationship. Wherein, the front leaf 131 and the rear leaf 132 of the frame hinge are fixed by a universal locking structure.

As shown in fig. 2b and 4, in the present embodiment, the seat tube assembly 12 further comprises a seat tube base 122, a seat tube clamp 123, and a reinforcement bar 127; the seat pipe clamp 123 is fixed to the top end of the seat pipe 121, and the height-adjustable seat unit 7 is fastened by the seat pipe clamp 123. The seat tube base 122 is fixed at the bottom end of the seat tube 121, a five-way hole 1221 and a rotating shaft hole 1222 are arranged on the seat tube base 122, and the end part of the lower end fork frame 42 is hinged with the seat tube base 122 through the rotating shaft hole 1222. One end of the reinforcing rod 127 is welded to the bottom side of the rear girder, and the other end is welded to the seat tube base 122 to form a triangular structure, so as to stably improve the strength of the seat tube assembly 12.

In addition, as shown in fig. 4, a connecting rotating shaft 124 is installed at the top end of the seat tube 121, the connecting rotating shaft 124 is disposed behind the seat tube clamp 123, the connecting rotating shaft 124 is perpendicular to the plane of the frame unit 1, and a tensioning buckle 125 is hinged on the connecting rotating shaft 124. Meanwhile, the bottom end of the seat tube assembly 12 is provided with a fixedly connected chain retaining wheel 128, and the chain retaining wheel 128 is used for preventing the chain from being too loose to cause chain dropping when the rear fork unit 4 overturns forwards.

As shown in fig. 3a to 3b, the front fork unit 2 includes a front fork assembly 21, a top tube assembly 22 and a front fork hinge 23, the front fork assembly 21 is connected to the front wheel unit 3, the top tube assembly 22 is connected to the handlebar unit 6, the front fork assembly 21 and the top tube assembly 22 are hinged by the front fork hinge 23, and the top tube assembly 22 is movably connected to the head tube assembly 11. Specifically, the upper tube assembly 22 penetrates through the head tube 111, the front fork hinge 23 is a front fork hinge, the front fork hinge includes an upper leaf 231 and a lower leaf 232, the upper leaf 231 and the lower leaf 232 are hinged and connected through a front fork pin shaft 233, and the upper leaf 231 and the lower leaf 232 of the front fork hinge are fixed through a universal locking structure.

Further, as shown in fig. 3b, the upper tube assembly 22 includes an upper tube 221 and an upper leaf 231, a through hole is provided on the upper leaf 231, the bottom end of the upper tube 221 is inserted into the through hole in an interference manner and then welded, in order to improve the connection strength between the upper tube 221 and the upper leaf 231, the bottom end of the upper tube 221 is pressed into an end portion of a fastening sleeve 222, the fastening sleeve 222 is disposed in the through hole of the upper leaf 231, and the end portions of the fastening sleeve 222 connected with the upper tube 221 all exceed the upper surface of the upper leaf 231, and the three are fixed by welding, so as to achieve the purpose of improving the strength.

Further, as shown in fig. 3a, the front fork assembly 21 includes two front fork arms and a lower leaf 232, the two front fork arms are symmetrically welded under the lower leaf 232, and the plane of the two front fork arms forms a 45-degree angle with the front fork pin 233, i.e. the front fork pin 233 forms a 45-degree angle with the front wheel unit 3, so as to ensure that the connecting line of the two ends of the handle bar unit 6 is parallel to the front wheel unit 3 when the front fork hinge is folded by 180 degrees. As shown in fig. 3b, a suspension core 223 is provided in the distal end of the upper pipe 221.

As shown in fig. 4 and 5, the rear fork unit 4 has a triangular structure, and the rear fork unit 4 includes an upper end fork 41, a lower end fork 42 and a support beam 43, the upper end fork 41 and the lower end fork 42 are connected to each other at one end provided with a yoke, both ends of the support beam 43 are connected to the other ends of the upper end fork 41 and the lower end fork 42, respectively, a first connecting member is disposed at an end of one end of the upper end fork 41 connected to the support beam 43, and a second connecting member is disposed at an end of one end of the lower end fork 42 connected to the support beam 43. The rear wheel unit 5 is mounted at the junction of the upper end yoke 41 and the lower end yoke 42.

Specifically, as shown in fig. 4 and 5, the second connecting member is a hinge hole 421, and the hinge hole 421 is connected to a pivot hole 1222 of the seat tube base 122 via a rear fork pivot. The first connecting member is a U-shaped plug 411, and both ends of the U-shaped plug 411 are provided with grooves, and the grooves are inserted at both ends of the connecting shaft 124. The rear part of the U-shaped plug-in 411 is provided with an easy-to-move wheel shaft 44 fixed on the upper end fork frame 41, the easy-to-move wheel shaft 44 is vertical to the plane of the frame unit 1, easy-to-move wheels 45 are arranged at both ends of the easy-to-move wheel shaft 44, and an elastic sleeve 46 is sleeved in the middle of the easy-to-move wheel shaft 44

Meanwhile, as shown in fig. 4, the tension buckle 125 is provided with a hook-shaped buckle, and when the U-shaped plug 411 is inserted into and clamped at both ends of the connecting shaft 124 through the groove, the tension buckle 125 can be fixed on the elastic sleeve 46 through the hook-shaped buckle, so that the end of the upper fork 41 is detachably connected with the top end of the seat tube 121, and the effect of fastening the frame unit 1 and the rear fork unit 4 is achieved. The elastic sleeve 46 plays a role in buffering between the tension buckle 125 and the free wheel shaft 44, and the fastening effect between the tension buckle 125 and the elastic sleeve 46 is essentially a cam effect, so that a better fastening effect can be achieved, and when the accumulated tolerance of the elastic sleeve 46 reaches a certain degree during the fastening effect, the tension buckle can still be ensured to effectively lock the rear fork unit 4 and can be opened at will.

In addition, as shown in fig. 4, one end of the tension buckle 125 is hinged to the connection shaft 124, the other end is provided with a rear fender 126 through a mounting hole, the rear fender 126 is movably connected to the tension buckle 125, and the rear fender 126 can rotate within a certain range with resistance relative to the tension buckle 125. The rear fender 126 abuts downward and upward on the outer side of the rear fork unit 4, i.e., the rear fender 126 is located above the rear wheel unit 5, and the rear fender 126 is prevented from contacting the rear wheel unit. When the rear wheel unit 5 is turned forward, the rear fender 126 is automatically away from the rear wheel unit 5, and at this time, the fastening buckle 125 and the rear fender 126 can be folded, so that the folded volume of the vehicle body reaches a minimum state.

When the rear wheel unit 5 is turned forward, the tension buckle 125 releases the elastic sleeve 46, and the lower fork 42 rotates with the seat tube base 122 through the rear fork rotating shaft, so that the rear wheel unit 5 is matched with the two easy-to-move wheels 45 to be supported on the ground. In order to facilitate the folding operation, the seat unit 7 is adjusted to fall to the lowest position, the seat post of the seat unit passes through the lower end of the seat tube 121 and can be directly inserted and clamped in the U-shaped insert 411, and the rear fork unit 4 and the frame unit 1 are clamped and fixed through the seat unit 7, so that the rear wheel unit 5 cannot move in the folding state, and the rear fork unit 4 is prevented from reversely rotating. Further, as shown in fig. 4, a catch wheel 47 is provided on the support beam 43, and the catch wheel 47 is moved up and down along the support beam 43. Thus, even if the seat unit 7 does not fall to the lowest position, the seat post can be abutted against the catch wheel 47 to achieve the effect of fixing the rear wheel unit 5 to prevent the rear fork unit 4 from rotating reversely, which is beneficial to fixing the seat post at the half-height position through the seat pipe clamp 123, and the seat post can hold the seat of the seat unit 7 by hand to push the folded vehicle body without carrying, so that the portability is better.

In this embodiment, as shown in fig. 6, the catch wheel 47 includes two symmetrically locked brackets 471 and a roller 472, the roller 472 is disposed at one end of the bracket 471, and the other end is locked on the supporting beam 43 by a screw 473, and the roller 472 faces away from the rear wheel unit 5.

Meanwhile, as shown in fig. 5, the rear fork unit 4 is provided with a claw 48 with a downward opening on the outer side, the claw 48 is provided at the joint of the upper fork 41 and the lower fork 42, the claw 48 is a U-shaped buckle, and when the vehicle body is completely folded, the claw 48 is hooked on the front fork assembly 1, that is, the inner fork arm of the front fork assembly 21 is clamped in the U-shaped buckle, so as to ensure that the vehicle body is not loose after being folded, and the vehicle body is folded into a folded state as shown in fig. 10. In order to further reduce the folded volume of the vehicle body, the rear fork unit 4 is provided with a seat post catch 49 facing horizontally outward, the seat post catch 49 is provided at the middle section of the upper end fork 41, and when the vehicle body is completely folded, the seat unit 7 is fixed on the seat post catch 49, that is, the seat post of the seat unit 7 is located between the front and rear wheels and is caught in the seat post catch 49, and the seat is located in the space below the seat tube assembly 12, forming the folded state shown in fig. 11.

As shown in FIG. 7, the handlebar unit 6 includes a handlebar assembly 61 and a handlebar cross assembly 62, the handlebar assembly 61 is used for connecting the front fork upper tube assembly 22 and the handlebar cross assembly 62, and one end of the handlebar assembly 61 is fixedly connected with the handlebar cross assembly 62, and the other end is fixedly connected with the top end of the upper tube assembly 22. Specifically, as shown in fig. 8a to 8b, the stem assembly 61 includes a stem quick-release wrench 611, a stem 612, an upper cover 613 and a horizontal quick-release wrench 614, the stem 612 is formed by welding a circular tube and a top seat 615 at the top end, and the top seat 615 is provided with a counter bore 616; the bottom end of the stand pipe 612 is sleeved outside the top end of the upper pipe assembly 22, and the stand pipe 612 is connected and locked with the upper pipe assembly 22 by the stand quick-release wrench 611; because the hanging core 223 is installed inside the upper pipe assembly 22, the top end of the vertical pipe 612 is provided with a countersunk head screw 617, the screw part of the countersunk head screw 617 penetrates into the upper pipe assembly 22 from the countersunk hole 616 of the top seat 615, the nut part of the countersunk head screw 617 is pressed outside the countersunk hole 616, and the screw part of the countersunk head screw 617 is in threaded connection with the hanging core 223. The horizontal assembly 62 is clamped and fixed between the upper cover 613 and the top seat 615, and in order to lock the upper cover 613 and the top seat 615, one end of the two is connected with a clamping groove or a screw, and the other end is connected with a horizontal quick-release wrench 614.

As shown in fig. 7, in order to ensure that the horizontal component 62 moving along with the folding process is always connected with the standing component 61 at the center, the horizontal component 62 is provided with fixing rings 621 for limiting, and the fixing rings 621 are closely arranged at two sides of the upper cover 613 to limit the horizontal position of the horizontal component 62 relative to the standing component 61. Preferably, the fixing ring 621 is an aluminum C-clip, and the C-clip is mounted on the lateral assembly 62 at two sides of the upper cover 613 by interference fit.

As shown in fig. 9a to 9d, a rotary tray 8 is installed on one side of the head pipe assembly 11 facing away from the seat pipe assembly 12, the rotary tray 8 includes a bracket 81, a tray 82 and a stabilizer bar 83, a fixing seat 112 is welded on one side of the head pipe 111 facing away from the front girder, the fixing seat 112 is in a step-shaped cylindrical structure, that is, the fixing seat 112 is divided into a bottom pillar stand and a boss on an end face, the fixing seat 112 is perpendicular to the head pipe 111, a through screwing hole is formed on the pillar stand of the fixing seat 112, and an axis of the screwing hole is perpendicular to a plane where the frame unit 1 is located. One end of the bracket 81 is provided with a threaded hole 811, the other end is provided with a joint 812, a propping part 813 is arranged right below the joint 812, the joint 812 is hinged with the fixed seat 112 through a screwed hole, and the propping part 813 props against the head pipe 111. The bottom side of tray 82 is equipped with preceding mounting hole 821 and back mounting hole 822, and preceding mounting hole 821 and back mounting hole 822 and the coaxial setting of the axis of tray 82, preceding mounting hole 821 passes through screw swivelling joint with screw hole 811, back mounting hole 822 and head pipe 111 swivelling joint, back mounting hole 822 overlaps on the boss promptly, preceding mounting hole 821, back mounting hole 822, screw hole 811, connect 812 and fixing base 112 all are on same axis, make tray 82 smoothly carry out axial for fixing base 112 and rotate. A rotating seat 84 is arranged on the side of the support 81, a rotatable stabilizing rod 83 is arranged on the rotating seat 84, the stabilizing rod 83 is rotatably connected with the rotating seat 84, the plane of the stabilizing rod 83 is parallel to the plane of the tray 82 when the stabilizing rod is rotated, and the upper surface of the stabilizing rod 83 is in contact with the bottom side surface of the tray 82 and forms a supporting relation.

As shown in fig. 9a, when the stabilizer bar 83 rotates to a position perpendicular to the bracket 81, the stabilizer bar 83 is supported on the bottom of the tray 82, and the tray 82 is in a stable state; as shown in fig. 9b, when the stabilizer bar 83 rotates to a position parallel to the bracket 81, the tray 82 can rotate around the central axis of the front mounting hole 821 and the rear mounting hole 822, and when the rotating tray rotates 90 degrees, the tray 82 is parallel to the head pipe 111, and at this time, when the vehicle body is in the folded state, the position of the tray 82 is ensured to be located between the front wheel unit 3 and the rear wheel unit 5, and no extra space is required, so that the folded volume of the vehicle body can be minimized.

Further, since there is no member requiring folding above the head pipe 111, a vacant space is formed behind the head pipe assembly 11, and preferably, as shown in fig. 1, a storage case 9 is fixed inside the head pipe assembly 11, and when the vehicle body is in the folded state, the storage case 9 is located at a position between the front wheel unit 3 and the rear wheel unit 5, without taking up an additional space. Storage box 9 can be used for depositing folding umbrella and car-loading package, also can set up this storage box 9 into the battery case, and the battery case provides the electric energy for the electrified upgrading of automobile body.

In the specific folding operation, in the present embodiment, after the vehicle body is completely folded, the rear wheel unit 5 and the rear fork unit 4 are turned to the lower side of the frame unit 1, the handlebar unit 6 is rotated to the vicinity of the seat tube assembly 12 along with the upper tube assembly 22, the front wheel unit 3 is rotated to the position parallel to the rear wheel unit 5 along with the front fork assembly 21, and the front wheel unit 3 and the rear wheel unit 5 are fixedly engaged by the hooks 48. Because frame articulated elements 13 slope sets up, when rear wheel unit 5 overturns forward, turn the front wheel of front wheel unit 3 the place ahead to the right through handlebar unit 6, handheld middle part to horizontal subassembly 62, directly pull to the side rear and can realize frame unit 1's folding easily, because the slip additional contribution and the long arm of force effect of front wheel, even if frame articulated elements 13 position is tight, realization folding process that also can be easy, this operation is then hardly realized to the girder folding joint structure of traditional vertical angle. Finally, front wheel unit 3 is located the left side of rear wheel unit 5, and the angle through the adjustment front fork hinge and the direction of transferring the frame hinge can reach the effect that front wheel unit 3 is located the right side of rear wheel unit 5, do the utility model discloses another expression form of using.

In summary, in the foldable two-wheeled vehicle provided in the embodiment, the handlebar assembly does not need to be folded, and a folding mechanism is not arranged between the handlebar assembly and the upper tube assembly, so that the rigidity and strength of the handlebar assembly are improved. When the vehicle body is folded, the handlebar unit is clamped between the front wheel and the rear wheel, the folding thickness is only the sum of the widths of the rear wheel and the front wheel, and the folding thickness reaches an optimal state. The transverse component is in a relatively loose space, namely the transverse component can adopt various models, does not occupy extra space, particularly a road bending handle, and can be well accommodated in the abundant space at the periphery of the seat pipe component.

The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.

Claims

1. A foldable two-wheeled vehicle, comprising a frame unit (1), a front fork unit (2), a front wheel unit (3), a rear fork unit (4), a rear wheel unit (5), a handlebar unit (6) and a seat unit (7), wherein:

2. The foldable two-wheeled vehicle of claim 1, wherein an inclined truncation surface is provided between the front and rear girders, and the truncation surface forms an included angle a with the axis of the front girder;

3. The foldable two-wheeled vehicle according to claim 2, wherein a ranges from 35 ° to 55 °.

4. The foldable two-wheeled vehicle according to claim 1, characterized in that the seat tube assembly (12) further comprises a seat tube base (122), a seat tube clamp (123) and a reinforcement bar (127);

5. The foldable two-wheeled vehicle according to claim 1, characterized in that the bottom end of the seat tube assembly (12) is provided with a chain stopper wheel (128).

6. The foldable two-wheeled vehicle according to claim 1, wherein the rear fork unit (4) has a triangular structure, the rear fork unit (4) includes an upper fork (41), a lower fork (42) and a support beam (43), the upper fork (41) and the lower fork (42) are connected to each other at one end provided with a yoke, the other ends of the upper fork (41) and the lower fork (42) are connected to both ends of the support beam (43), respectively, the first connector is provided at the end of the upper fork (41), and the second connector is provided at the end of the lower fork (42).

7. The foldable two-wheeled vehicle according to claim 6, characterized in that a connecting rotating shaft (124) is mounted at the top end of the seat tube (121), the connecting rotating shaft (124) is perpendicular to the plane of the frame unit (1), a hinged tightening buckle (125) is arranged on the connecting rotating shaft (124), and a hook-shaped structure buckle is arranged on the tightening buckle (125);

8. The foldable two-wheeled vehicle according to claim 7, wherein the tightening buckle (125) is hinged to the connecting shaft (124) at one end and provided with a rear fender (126) at the other end, and the rear fender (126) is movably connected to the tightening buckle (125); the rear mudguard (126) is propped against the outer side of the rear fork unit (4), namely, the rear mudguard (126) is positioned above the rear wheel unit (5) and is not contacted with the rear wheel unit.

9. The foldable two-wheeled vehicle according to claim 6, characterised in that the support beam (43) is provided with a catch wheel (47), the catch wheel (47) being adjustable up and down in the direction of the support beam (43).

10. The foldable two-wheeled vehicle according to claim 9, characterized in that the catch wheel (47) comprises two symmetrically locked brackets (471) and a roller (472), the roller (472) is arranged at one end of the bracket (471) and locked on the supporting beam (43) by a screw (473), and the roller (472) faces away from the rear wheel unit (5).

11. The foldable two-wheeled vehicle according to claim 1, characterised in that the rear fork unit (4) is provided with a downwardly opening finger (48) on the outside, the finger (48) hooking onto the front fork assembly (21) when the vehicle body is fully folded.

12. The foldable two-wheeled vehicle according to claim 1, characterised in that the rear fork unit (4) is provided with a seat post catch (49) facing horizontally outwards, the seat unit (7) being fixed to the seat post catch (49) when the vehicle body is fully folded.

13. The foldable two-wheeled vehicle according to claim 1, characterized in that the handlebar unit (6) comprises a handlebar assembly (61) and a handlebar cross assembly (62), the handlebar assembly (61) being mounted with one end to the handlebar cross assembly (62) and the other end to the top end of the upper tube assembly (22).

14. The foldable two-wheeled vehicle according to claim 13, wherein the stand assembly (61) comprises a stand quick release wrench (611) and a stand pipe (612), the bottom end of the stand pipe (612) is sleeved outside the top end of the upper pipe assembly (22), and the stand quick release wrench (611) connects and locks the stand pipe (612) and the upper pipe assembly (22);

15. The foldable two-wheeled vehicle according to claim 14, characterized in that the handlebar stem assembly (61) further comprises an upper cover (613) and a horizontal quick release wrench (614), the top end of the handlebar stem (612) is provided with a top seat (615), and the horizontal assembly (62) is clamped and fixed between the upper cover (613) and the top seat (615).

16. The foldable two-wheeled vehicle according to claim 15, characterised in that the upper cover (613) is connected to the top seat (615) by a bayonet or screw connection at one end and by the quick release wrench (614) at the other end.

17. The foldable two-wheeled vehicle according to claim 13, characterized in that the handlebar cross assembly (62) is provided with fixing rings (621), and the fixing rings (621) are arranged on both sides of the handlebar assembly (61) in a clinging manner.

18. The foldable two-wheeled vehicle according to claim 1, characterized in that a rotary tray (8) is arranged on the side of the head pipe assembly (11) facing away from the seat pipe assembly (12), the rotary tray (8) comprises a bracket (81), a tray (82) and a stabilizer bar (83), one end of the bracket (81) is provided with a threaded hole (811), the other end of the bracket is provided with a joint (812), a butting part (813) is arranged right below the joint (812), the joint (812) is hinged with the head pipe (111), and the butting part (813) butts against the head pipe (111);

19. The foldable two-wheeled vehicle of claim 18, wherein a fixed seat (112) is arranged on the head pipe (111), the fixed seat (112) is hinged to the joint (812), a boss is arranged on the end face of the fixed seat (112), the rear mounting hole (822) is sleeved on the boss, and the front mounting hole (821), the rear mounting hole (822), the threaded hole (811), the joint (812) and the fixed seat (112) are all on the same axis.

20. The foldable two-wheeled vehicle according to claim 1, characterised in that a storage box (9) or battery box is fixed inside the head pipe assembly (11).