CN114074737A - Vehicle with a steering wheel - Google Patents

Abstract

The invention provides a vehicle, and relates to the technical field of non-motor vehicles. The vehicle includes: a wheel including a first wheel and a second wheel that can be separated and combined; a drive assembly including a first member connected to the first wheel and a second member connected to the second wheel, the first and second members being relatively far apart and close together; and the driving mechanism is used for driving the first component and the second component to move relatively far and close. The vehicle of the invention can improve the foldability of the vehicle and reduce the space occupied by the vehicle.

Description

Vehicle with a steering wheel

Technical Field

The invention belongs to the technical field of vehicles, and particularly relates to a vehicle.

Background

The non-motor vehicles need to be folded in the using process, and wheels of related foldable vehicles are fixed relative to the vehicle body, so that the foldability of the vehicle body is limited; the wheels of other related foldable vehicles are independent, and the vehicles have large volume in a folded state, and have insufficient structural compactness and aesthetic property, so that the occupied space of the vehicles is large.

Disclosure of Invention

In view of the above, the present invention provides a vehicle, so as to solve the technical problems of how to improve the foldability of the vehicle and reduce the space occupied by the vehicle.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the present invention provides a vehicle, including: a wheel including a first wheel and a second wheel that can be separated and combined; a drive assembly including a first member connected to the first wheel and a second member connected to the second wheel, the first and second members being relatively far apart and close together; a drive mechanism for driving the first and second members relatively apart and closer together.

Further, the first wheel is fixedly connected with a first rotating structure; the second wheel is fixedly connected with a second rotating structure; the first and second rotating structures may be connected to rotate synchronously about a first direction and may be separated to be spaced apart by a preset distance in the first direction.

Further, the edge of the first rotating structure forms a first tooth wheel with a spacing of convex and concave parts, the edge of the second rotating structure forms a second tooth wheel with a spacing of convex and concave parts, and the first tooth wheel can be meshed with the second tooth wheel.

Further, the transmission assembly further comprises: a base; the transmission mechanism is connected with the base and comprises a first transmission piece and a second transmission piece which can be relatively far away from and close to each other; the first component is connected with the first transmission piece, and the second component is connected with the second transmission piece; the first component and the second component move in parallel under the driving of the first transmission piece and the second transmission piece so as to relatively move away from and approach to each other.

Further, the transmission assembly further comprises: the synchronous movement mechanism is connected with the base and can move relative to the base; the synchronous movement mechanism comprises a first movement part and a second movement part which move along opposite directions; the first moving part is connected with the first transmission part, and the second moving part is connected with the second transmission part.

Further, the synchronous movement mechanism further comprises a sliding block which can move relative to the base; the first moving piece and the second moving piece are connecting rods which are both rotatably connected with the sliding block; the first transmission piece comprises a first transmission connecting rod and a first guide connecting rod; one end of the first transmission connecting rod is rotatably connected with the first moving part, and the other end of the first transmission connecting rod is rotatably connected with the first part; one end of the first guide connecting rod is rotatably connected with the base, and the other end of the first guide connecting rod is rotatably connected with the first component; the second transmission part comprises a second transmission connecting rod and a second guide connecting rod; one end of the second transmission connecting rod is rotatably connected with the second moving part, and the other end of the second transmission connecting rod is rotatably connected with the second part; one end of the second guide connecting rod is rotatably connected with the base, and the other end of the second guide connecting rod is rotatably connected with the second part; wherein, first transmission connecting rod and second transmission connecting rod all with the base is rotatable is connected.

Further, the first moving part and the second moving part are a first gear and a second gear which are meshed with each other, and the diameters and the number of teeth of the first gear and the second gear are the same; the first transmission piece is a first rack meshed with the first gear, and the second transmission piece is a second rack meshed with the second gear.

Further, the transmission mechanism further comprises: the screw rod is connected with the base, and threads are arranged on the surface of the screw rod; the first transmission piece and the second transmission piece are both nuts which are sleeved on the screw rod and are in threaded connection with the screw rod, and the thread rotating direction of the first transmission piece is opposite to the thread rotating direction of the second transmission piece; the first component is connected with the first transmission piece, and the second component is connected with the second transmission piece.

Further, the driving mechanism comprises a traction mechanism, and the traction mechanism is connected with the sliding block so as to drive the sliding block to reciprocate.

Further, the traction mechanism comprises a steel wire and an elastic element fixedly connected with the steel wire, the elastic element is fixedly connected with the sliding block, and the elastic element can deform to enable the sliding block to reciprocate.

Further, the wheel further includes a third wheel, and the first wheel and the second wheel are separable on opposite sides of the third wheel in a state where the vehicle is folded, and the vehicle further includes: a front fork connected to the third wheel at the opposite sides, respectively, to limit movement of the third wheel; the rotatable mechanism is fixedly connected with the front fork so as to drive the front fork to rotate; and the restoring structure is connected with the rotatable mechanism, and can generate restoring force for driving the rotatable mechanism to reset along with the rotation of the rotatable mechanism.

Further, the restoring structure is a deformable component which moves along with the rotation of the rotatable mechanism to generate deformation.

Further, the vehicle further comprises a first mudguard, wherein the first mudguard comprises a first shielding part and a first curling part which are connected; the first shielding part is fixedly connected with the first component and covers part of the first wheel; the first bent part is bent from one end to the other end in the direction far away from the first wheel, and the one end is connected with the first shielding part; the second mud baffle comprises a second shielding part and a second curling part which are connected; the second shielding part is fixedly connected with the second component and covers part of the second wheel; the second curling part is bent from one end to the other end in a direction away from the second wheel, and the one end is connected with the second shielding part.

A vehicle includes a wheel, a transmission assembly, and a drive mechanism. By providing a first wheel, a second wheel and a transmission assembly on a vehicle, wherein the transmission assembly comprises a first part connecting the first wheel and a second part connecting the second wheel, the first part and the second part can be relatively far apart and close together to separate and merge the first wheel and the second wheel. According to the vehicle, the first wheel and the second wheel are separated and combined through the first part and the second part of the transmission assembly, the first wheel and the second wheel can be separated to two sides of the vehicle body when the vehicle is folded, and the driving wheels on the folding vehicle can be placed in the space between the first wheel and the second wheel, so that the foldability of the vehicle is improved, and the space occupied by the folded vehicle is reduced.

Drawings

FIG. 1 is a schematic diagram of the operating principle of a related foldable vehicle;

FIG. 2 is a top view of an unfolded state of the vehicle according to an embodiment of the present invention;

FIG. 3a is a schematic structural diagram of a transmission assembly of a vehicle according to an embodiment of the present invention, and a first wheel and a second wheel in an operating state;

FIG. 3b is a schematic illustration of the transmission assembly and the first and second wheels of the vehicle in another operating condition in accordance with the embodiment of the present invention;

FIG. 4a is a schematic structural diagram of a transmission assembly and a driving mechanism of a vehicle according to an embodiment of the present invention in an operating state;

FIG. 4b is a schematic structural diagram of the transmission assembly and the driving mechanism of the vehicle in another operating state according to the embodiment of the invention;

FIG. 5 is a cross-sectional view of the first and second wheels of the vehicle in an operating condition in accordance with an embodiment of the present invention;

FIG. 6 is a cross-sectional view of the first and second wheels of the vehicle in another operating condition in accordance with an embodiment of the present invention;

FIG. 7a is a schematic perspective view of a first wheel and a second wheel of a vehicle according to an embodiment of the present invention;

FIG. 7b is a schematic perspective view of the first and second wheels of the vehicle from another perspective according to the embodiment of the present invention;

FIG. 8a is a schematic structural diagram of a transmission assembly of a vehicle according to an embodiment of the present invention in one operating state;

FIG. 8b is a schematic illustration of the transmission assembly of the vehicle in another operating condition in accordance with the embodiment of the present invention;

FIG. 8c is a schematic illustration of a transmission assembly of the vehicle according to the embodiment of the present invention;

FIG. 8d is a schematic illustration of a transmission assembly of another vehicle according to an embodiment of the present invention;

FIG. 8e is a schematic illustration of a transmission assembly of another vehicle according to an embodiment of the present invention;

FIG. 9 is a perspective view of a vehicle according to an embodiment of the present invention;

FIG. 10 is a schematic structural view of a footrest of a vehicle according to an embodiment of the present invention;

FIG. 11a is a perspective cross-sectional view of a footrest and a chute of a vehicle in accordance with an embodiment of the present invention;

FIG. 11b is an enlarged view of a portion of the structure at A in FIG. 11 a;

FIG. 11c is an enlarged view of a portion of the structure at B in FIG. 11 a;

FIG. 11d is an enlarged partial view of the structure at C in FIG. 11 a;

FIG. 11e is a side view of a drive mechanism of the vehicle according to an embodiment of the present invention;

FIG. 11f is a bottom plan view of the drive mechanism of the vehicle of the embodiment of the present invention;

FIG. 11g is a left side view of a vehicle structure according to an embodiment of the present invention;

FIG. 12 is a perspective view of a vehicle according to an embodiment of the present invention in a folded state;

FIG. 13 is a perspective view of a third wheel and front fork of the vehicle in accordance with an embodiment of the present invention;

FIG. 14 is a perspective view of a rotatable mechanism of the vehicle according to an embodiment of the present invention;

fig. 15 is a sectional view of a steering mechanism of a vehicle according to an embodiment of the present invention.

Description of reference numerals:

1-foldable vehicle, 11-upright, 12-floor, 13-connecting tube, 14-front wheel, 15-rear wheel, 2-wheel, 21-first wheel, 211-first fender, 2111-first shelter, 2112-first curl, 22-second wheel, 221-second fender, 2211-second shelter, 2212-second curl, 23-first rotation structure, 231-first tooth, 24-second rotation structure, 241-second tooth, 25-third wheel, 3-transmission assembly, 31-first part, 32-second part, 33-base, 3-transmission assembly, 3-first part, 32-second part, 3-base, 3-connecting tube, and so on4-gear mechanism, 341-first transmission element, 3411-first transmission link, 3412-first guide link, 3413-first rack, 342-second transmission element, 3421-second transmission link, 3422-second guide link, 3423-second rack, 343-screw, 35-synchronous motion mechanism, 351-first motion element, 3511-first gear, 352-second motion element, 3521-second gear, 353-slider, 4-drive mechanism, 41-traction mechanism, 411-wire, 412-elastic element, 5-foot pedal, 51-handle, 52-traction wire, 53-wire collection module, 54-locking pin, 541-rear fork locking pin, 542-body locking pin, 543-oblique tube locking pin, 6-tube chute, 8-fork, 9-steering, 91-turnable, 92-head, 93-riser, 94-return, O-first direction, O '-centre line of symmetry of the slider in vertical direction, S-centre line of symmetry in principle sketch, theta-angle between link of the first and second moving member, theta' -maximum angle between link of the first and second moving member, theta '″ -minimum angle between link of the first and second moving member, v-velocity of the first bump, v-return, v-first direction, O' -centre line of symmetry of the slider in vertical direction, S-centre line of symmetry in principle sketch, theta-angle between link of the first moving member and link of the second moving member, theta₁A velocity component, v, of the first projection in the vertical direction₂-the velocity component of the first protrusion in the horizontal direction, -v-the velocity of the second protrusion, v₁-the velocity component of the second protrusion in the vertical direction, -v₂-the velocity component of the second protrusion in the horizontal direction

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The individual features described in the embodiments can be combined in any suitable manner without departing from the scope, for example different embodiments and aspects can be formed by combining different features. In order to avoid unnecessary repetition, various possible combinations of the specific features of the invention will not be described further.

In the following description, the term "first \ second \ …" is referred to merely to distinguish different objects and does not indicate that there is identity or relationship between the objects. It should be understood that the references to "above" and "below" are to be interpreted as referring to the orientation during normal use.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. The term "coupled", where not otherwise specified, includes both direct and indirect connections.

The vehicle of the present application includes electric vehicles, scooters, and other foldable non-motor vehicles, and those skilled in the art should understand that the specific type of vehicle does not limit the technical solution of the vehicle claimed in the present application. The following description will be given taking an example in which the vehicle is a foldable electric vehicle.

The working principle of the related foldable vehicle is exemplarily explained as follows: as shown in fig. 1, the foldable vehicle 1 includes a pillar 11 and a base plate 12, the pillar 11 is connected to the base plate 12 through a connecting pipe 13, a front wheel 14 is connected to the pillar 11, and a rear wheel 15 is connected to the base plate 12, in the case of the foldable vehicle being an electric vehicle, the front wheel 14 is generally a driving wheel, and the rear wheel 15 is generally a driven wheel, i.e., a non-powered wheel. However, the front wheels 14 may be driven wheels and the rear wheels 15 may be driving wheels. The upright post 11 and the bottom plate 12 can rotate relative to the connecting pipe 13, so that the upright post 11 and the bottom plate 12 are relatively close to each other until the upright post 11 and the bottom plate 12 are attached to each other as much as possible through the rotation of the upright post 11 and the connecting pipe 13 and the rotation of the bottom plate 12 and the connecting pipe 13, and the folding process of the whole vehicle body is realized.

In an embodiment of the invention, as shown in fig. 2, the vehicle comprises wheels 2, a transmission assembly 3 and a drive mechanism 4. The wheel 2 comprises a first wheel 21 and a second wheel 22 which can be separated and combined. Specifically, the first wheel 21 and the second wheel 22 refer to unpowered wheels in the vehicle, i.e., rear wheels shown in fig. 2. The first wheel 21 and the second wheel 22 are both of substantially identical construction and always remain coaxially arranged, i.e. both wheels have the same axis of symmetry. The first wheel 21 and the second wheel 22 can be combined to keep the first wheel 21 and the second wheel 22 connected, and the combination means that two adjacent surfaces of the first wheel 21 and the second wheel 22 can be attached to each other, or the distance between the two adjacent surfaces of the first wheel 21 and the second wheel 22 is much smaller than the thickness of the first wheel 21 or the second wheel 22 (the length of the first wheel or the second wheel in the left-right direction as shown in fig. 2). The first wheel 21 and the second wheel 22 can also be separated, by which is meant that the first wheel 21 and the second wheel 22 can move in opposite directions and are spaced apart by a preset distance.

As shown in fig. 3a and 3b, the transmission assembly 3 comprises a first part 31 connected to the first wheel 21 and a second part 32 connected to the second wheel 22. Specifically, the first and second wheels 21 and 22 are connected to the inner sides of the first and second members 31 and 32, respectively, such as the right side of the first member 31 and the left side of the second member 32 in fig. 3a and 3 b. The first part 31 and the second part 32 can be relatively far apart and close together to separate and merge the first wheel 21 and the second wheel 22. Specifically, the first member 31 and the second member 32 can drive the first wheel 21 and the second wheel 22 correspondingly connected with the first member to move. As shown in fig. 3a, the first member 31 and the second member 32 are in a relatively close state, and correspondingly, the first wheel 21 and the second wheel 22 are in a merged state; as shown in fig. 3b, the first member 31 and the second member 32 are in a relatively distant state, and correspondingly the first wheel 21 and the second wheel 22 are in a separated state.

As shown in fig. 4a and 4b, the drive mechanism 4 is used to drive the first member 31 and the second member 32 relatively away from and closer to each other. Specifically, the driving mechanism 4 is connected to the transmission assembly 3, and the driving mechanism 4 can generate a driving force and transmit the driving force to the first member 31 and the second member 32 of the transmission assembly 3, so that the first member 31 and the second member 32 can move away from and close to each other relatively.

Embodiments of the present invention provide a vehicle with a first wheel, a second wheel, and a transmission assembly, wherein the transmission assembly includes a first member coupled to the first wheel and a second member coupled to the second wheel, the first member and the second member being relatively movable away from and toward each other to separate and merge the first wheel and the second wheel. According to the vehicle, the first wheel and the second wheel are separated and combined through the first part and the second part of the transmission assembly, the first wheel and the second wheel can be separated to two sides of the vehicle body when the vehicle is folded, and the driving wheels of the folding vehicle can be placed in the space between the first wheel and the second wheel, so that the foldability of the vehicle is improved, the space occupied by the vehicle after folding is reduced, the structure is compact, and the carrying is convenient.

In some embodiments, as shown in fig. 5, a first rotating structure 23 is fixedly connected to the first wheel 21 and a second rotating structure 24 is fixedly connected to the second wheel 22. In particular, the first rotating structure 23 is arranged coaxially with the first wheel 21 and the second rotating structure 24 is arranged coaxially with the second wheel 22. First rotating-structure 23 can be through mode fixed connection such as bonding, welding in first wheel 21, also can be as an integrated into one piece structure with first wheel 21, and is concrete, and first rotating-structure 23 can be through mode fixed connection such as bolt, buckle in first wheel 21 to change first rotating-structure 23. The second rotating structure 24 may be fixedly connected to the second wheel 22 by bonding, welding, or the like, or may be integrally formed with the second wheel 22, specifically, the second rotating structure 24 may be fixedly connected to the second wheel 22 by bolts, fasteners, or the like, so as to replace the second rotating structure 24.

As shown in fig. 5, the first and second rotating structures 23 and 24 may be connected to rotate synchronously about a first direction. Specifically, the first rotating structure 23, the second rotating structure 24, the first wheel 21 and the second wheel 22 are coaxial, and the axis is O. The first direction is the direction of the axis O, and the first wheel 21 and the second wheel 22 rotate around the axis O and drive the first rotating structure 23 and the second rotating structure 24 connected to the first wheel to rotate around the axis O. The connection between the first rotating structure 23 and the second rotating structure 24 may be a fixed connection without relative movement, and during the rotation of one of the first wheel 21 and the second wheel 22, the first rotating structure 23 and the second rotating structure 24 are inevitably driven to rotate together, that is, the synchronous rotation is performed. The connection between the first rotating structure 23 and the second rotating structure 24 may also be an abutment, for example, the first rotating structure 23 and the second rotating structure 24 are configured in a manner that a groove and a protrusion interfere with each other, and during the rotation of one of the first wheel 21 and the second wheel 22, the first rotating structure 23 and the second rotating structure 24 are inevitably driven to rotate together.

As shown in fig. 6, the first rotating structure 23 and the second rotating structure 24 may be separated to be spaced apart by a preset distance in the first direction. Specifically, when the first rotating structure 23 and the second rotating structure 24 are connected in an abutting manner, the first rotating structure 23 and the second rotating structure 24 can be separated from each other, and a preset distance is formed in the direction of the axis O, so that the first wheel 21 fixedly connected to the first rotating structure 23 and the second wheel 22 fixedly connected to the second rotating structure 24 can be separated from each other and are located on two sides of the vehicle body. In the folded state, the space between the first rotating structure 23 and the second rotating structure 24 can be used for placing the driving wheels of the vehicle, so that the vehicle is more compact in structure after being folded, the size of the vehicle body is reduced, and the vehicle is convenient to carry.

Through the connection of first rotating-structure and second rotating-structure, can make first wheel, second wheel, first rotating-structure and second rotating-structure become a whole under operating condition and carry out synchronous revolution, through the separation of first rotating-structure and second rotating-structure, the vehicle can be when folding, and separately to the automobile body both sides with first wheel and second wheel to save space, conveniently carry and promoted the aesthetic feeling.

In other embodiments, the first wheel and the second wheel in the separated state may have a predetermined distance not only in the first direction but also in other directions.

In some embodiments, as shown in fig. 7a and 7b, the edge of the first rotating structure 23 forms a first row of teeth 231 spaced apart in relief, the edge of the second rotating structure 24 forms a second row of teeth 241 spaced apart in relief, and the first row of teeth 231 is engageable with the second row of teeth 241. It should be noted that the meaning of the alternate concave and convex is to say that the grooves and the protrusions are connected in sequence, one protrusion is arranged between two adjacent grooves, and one groove is arranged between two adjacent protrusions. Specifically, the first and second rolling teeth 231 and 241 are engaged with each other in a state where the first rotating structure 23 is connected to the second rotating structure 24. The first and second tooth wheels 231 and 241 may protrude in the forward and reverse directions of the first direction, that is, the first and second tooth wheels 231 and 241 are oppositely disposed in the first direction, and the groove of the first rotating structure 23 and the groove of the second rotating structure 24 may be open-mouthed. During the relative movement of the first and second rotating structures 23 and 24 in the first direction, the first and second teeth 231 and 241 approach each other, the protrusions of the first teeth 231 are conveniently inserted into the grooves of the second rotating structure 24 to be engaged with the second teeth 241, and the protrusions of the second teeth 241 are conveniently inserted into the grooves of the first rotating structure 23 to be engaged with the first teeth 231, so as to facilitate the connection of the first and second rotating structures 23 and 24.

As shown in fig. 7a and 7b, in some embodiments, the first wire 231 is arranged in a circular ring shape, and the second wire 241 is arranged in a corresponding circular ring shape, and the diameter of the circle formed by the first wire 231 is the same as the diameter of the circle formed by the second wire 241. And the center of the circle formed by the first tooth wheel 231 and the center of the circle formed by the second tooth wheel 241 are at the same position on the projection perpendicular to the plane in which the first direction is located. In a state where the first and second wheels 21 and 22 approach in the first direction to complete the connection of the first and second rotating structures 23 and 24, the first and second teeth 231 and 241 are always disposed opposite to each other, and the first and second teeth 231 and 241 do not affect the completion of the engagement of the first and second teeth 231 and 241 after being rotated by different angles.

In other embodiments, the first and second teeth 231 and 241 may protrude in other directions, and it is only necessary that the first and second teeth 231 and 241 are engaged with each other so that the first and second rotating structures 23 and 24 can be connected to each other for synchronous rotation. For example, the first tooth wheel 231 may protrude in a direction perpendicular to the first direction, the second tooth wheel 241 may protrude in a direction perpendicular to the first direction, and the first tooth wheel 231 and the second tooth wheel 241 may form a ring gear mechanism, i.e. a gear and a ring gear are engaged to realize torque bearing and synchronous rotation of the first rotating structure 23 and the second rotating structure 24.

A first meshing tooth is formed on the first rotating structure, a second meshing tooth is formed on the second rotating structure, and the first rotating structure and the second rotating structure are mutually meshed to be abutted, so that the first rotating structure and the second rotating structure synchronously rotate; the tooth socket meshed connection mode is simple in structure and has a good transmission effect.

In some embodiments, as shown in fig. 8a and 8b, the transmission assembly 3 further comprises a base 33 and a transmission mechanism 34. The base 33 is stationary, for example, the base 33 is an integral part of a vehicle frame. The transmission mechanism 34 is connected to the base 33, and the transmission mechanism 34 includes a first transmission member 341 and a second transmission member 342 that can move relatively away from and toward each other. Specifically, the first transmission member 341 and the second transmission member 342 are capable of moving relative to the base 33, respectively, as shown in fig. 8a, the first transmission member 341 and the second transmission member 342 are in a relatively far state, and as shown in fig. 8b, the first transmission member 341 and the second transmission member 342 are in a relatively close state. The first member 31 is connected to the first transmission member 341, and the second member 32 is connected to the second transmission member 342. Specifically, in the case where the first wheel 21 and the second wheel 22 are unpowered rear wheels, the first member 31 and the second member 32 may be a first rear fork and a second rear fork of the vehicle. The first member 31 and the second member 32 are disposed at an interval, and the longitudinal extension directions of the two members are parallel to each other. The first member 31 may move with the movement of the first transmission member 341, and the second member 32 may move with the movement of the second transmission member 342. The first member 31 and the second member 32 move in parallel to move away from and close to each other by the first transmission member 341 and the second transmission member 342. The parallel motion means that the first member 31 and the second member 32 do not rotate relative to each other, the motion trajectories of the first member 31 and the second member 32 are straight lines, the straight lines are parallel to each other, and the first member 31 and the second member 32 do not displace relative to each other in the vertical direction (the vertical direction shown in fig. 8a and 8 b). Specifically, during the process that the first member 31 and the second member 32 move along with the first transmission member 341 and the second transmission member 342, the first member 31 and the second member 32 always keep relatively parallel movement, and the first member 31 and the second member 32 do not move relatively in the vertical direction (the up-down direction shown in fig. 8a and 8 b), and always keep synchronization, that is, the first member 31 and the second member 32 do not have relative change of distance in the vertical direction. The first part 31 and the second part 32 are relatively movable only in the horizontal direction (the left-right direction shown in fig. 8a and 8 b), that is, the distance between the first part 31 and the second part 32 in the horizontal direction is relatively increased or decreased, that is, relatively far away and close. Since the longitudinal extension directions of the first member 31 and the second member 32 are parallel to each other, the first member 31 and the second member 32 can move away from and close to each other in parallel without an angle caused by relative movement therebetween. The first and second transmission members 341 and 342 can also limit the first and second members 31 and 32 from moving away and approaching infinitely.

In some embodiments, the transmission mechanism 34, the first member 31 and the second member 32 can be arranged in other specific ways. For example, the transmission mechanism 34 shown in fig. 8d includes a first transmission member 341 and a second transmission member 342 that can be relatively distant and close. The first transmission member 341 and the second transmission member 342 move along different oblique line directions in the vertical plane shown in fig. 8d, so as to move away from and approach each other relatively, and further drive the first component 31 and the second component 32 to move in the vertical direction shown in fig. 8d, so as to move away from and approach each other horizontally. For another example, the transmission mechanism 34 shown in fig. 8e includes a first transmission member 341 and a second transmission member 342 that can be relatively far away and close. The first transmission member 341 and the second transmission member 342 move relatively in the horizontal direction shown in fig. 8e to move away from and close to each other, so as to drive the first member 31 and the second member 32 to move away from and close to each other in the horizontal direction shown in fig. 8 e.

The transmission assembly realizes the parallel distance and approach of the first part and the second part through the transmission mechanism, improves the foldability of the vehicle, and further optimizes the folding space of the vehicle body.

In some embodiments, as shown in fig. 8a and 8b, the transmission mechanism 34 further comprises a synchronous movement mechanism 35 connected to the base 33, which is capable of moving relative to the base 33; the synchronous moving mechanism 35 includes a first moving member 351 and a second moving member 352 which move in opposite directions; the first moving element 351 is connected to the first transmission element 341, and the second moving element 352 is connected to the second transmission element 342, so as to drive the first transmission element 341 and the second transmission element 342 to move away from and close to each other. Specifically, the first moving element 351 and the second moving element 352 having the same moving speed and opposite moving directions can drive the first transmission element 341 and the second transmission element 342 connected thereto to generate the same moving speed and opposite moving directions. Furthermore, the first member 31 and the second member 32 can also generate movements with the same movement rate and opposite movement directions under the driving of the first transmission member 341 and the second transmission member 342, so as to keep relatively parallel far and close.

The first moving piece and the second moving piece which have the same moving speed and opposite moving directions are arranged, so that the step-by-step transmission of power is effectively realized; and the first moving member and the second moving member can be relatively far away and close, so that the foldability of the vehicle is further optimized.

In other embodiments, the synchronous motion mechanism 35 has additional specific components and arrangements. As shown in fig. 8d, the synchronous moving mechanism 35 includes a first moving member 351 and a second moving member 352 which move in opposite directions; the first moving element 351 is connected to the first transmission element 341, and the second moving element 352 is connected to the second transmission element 342, so as to drive the first transmission element 341 and the second transmission element 342 to move away from and close to each other. Specifically, the first moving element 351 and the second moving element 352 rotate in opposite directions at the same speed, so as to drive the first transmission element 341 and the second transmission element 342 to move away from and close to each other at the same speed relative to the symmetry axes of the two elements.

In some embodiments, as shown in fig. 8a and 8b, the synchronous motion mechanism 35 further comprises a slider 353 movable relative to the base 33. Specifically, the slider 353 may have a substantially cubic structure and has a symmetric center line O 'in a vertical direction (in a vertical direction as shown in fig. 8a and 8 b), and the slider 353 makes a reciprocating linear motion in a certain range along the symmetric center line O', as shown in fig. 8b, a position where the slider 353 stays is an upper limit of a motion range, which is hereinafter referred to as a top dead center, and as shown in fig. 8a, a position where the slider 353 stays is a lower limit of the motion range, which is hereinafter referred to as a bottom dead center. The first moving member 351 and the second moving member 352 are links each rotatably connected to the slider 353 to rotate in opposite directions at the same rate by the slider 353. Specifically, the first moving member 351 and the second moving member 352 are symmetrically arranged about the symmetry center line O ', and are rotatably connected to the slider 353, so as to move along the direction of the symmetry center line O' under the driving of the slider 353, and meanwhile, the first moving member 351 and the second moving member 352 respectively rotate relative to the slider 353 by taking the connection point as the rotation center at the same speed and in opposite directions within a certain range, so that the included angle θ between the first moving member 351 and the second moving member 352 is increased or decreased, that is, the first moving member 351 and the second moving member 352 are relatively far away from or close to each other. In the process of moving the slider 353 from the top dead center to the bottom dead center, an included angle θ between the first moving member 351 and the second moving member 352 is gradually increased, that is, the first moving member 351 and the second moving member 352 move relatively away from each other, and when the slider 353 moves to the bottom dead center, the included angle θ between the first moving member 351 and the second moving member 352 reaches a maximum value θ', that is, the state of the first moving member 351 and the second moving member 352 as shown in fig. 8 a; during the movement of the slider 353 from the bottom dead center to the top dead center, the angle θ between the first moving member 351 and the second moving member 352 gradually decreases, the first moving member 351 and the second moving member 352 exhibit relatively close movement, and when the slider 353 moves to the top dead center, the angle θ between the first moving member 351 and the second moving member 352 reaches the minimum value θ' ″, i.e., the state of the first moving member 351 and the second moving member 352 as shown in fig. 8 b.

As shown in fig. 8a and 8b, the first transmission member 341 includes a first transmission link 3411 and a first guide link 3412; one end of the first transmission link 3411 is rotatably connected to the first moving element 351, and the other end of the first transmission link 3411 is rotatably connected to the first member 31; the first guide link 3412 has one end rotatably connected to the base 33 and the other end rotatably connected to the first member 31; the second transmission part 342 includes a second transmission link 3421 and a second guide link 3422; one end of the second transmission link 3421 is rotatably connected to the second movement member 352, and the other end of the second transmission link 3421 is rotatably connected to the second member 32; the second guide link 3422 has one end rotatably connected to the base 33 and the other end rotatably connected to the second member 32. Wherein, the first transmission link 3411 and the second transmission link 3421 are both rotatably connected to the base 33. Specifically, since the first moving member 351 and the second moving member 352 are both configured as a link, in order to facilitate structural matching of the components, the first transmission member 351 and the second transmission member 352 are also configured in a link manner and are symmetrically disposed about the center line of symmetry O'. Here, the first and second transmission links 3411 and 3421 and the first and second guide links 3412 and 3422 are symmetrically disposed about the center line O'. The first guide link 3412 and the first transmission link 3411 are spaced apart from each other and have substantially the same extending direction, and similarly, the second guide link 3422 and the second transmission link 3421 are spaced apart from each other and have substantially the same extending direction. One end of the first transmission link 3411 and one end of the second transmission link 3421 are rotatably connected to the base 33, the other end of the first transmission link 3411 and the other end of the second transmission link 3421 are rotatably connected to the first component 31 and the second component 32, respectively, one end of the first moving element 351 and one end of the second moving element 352 are rotatably connected to the other end of the first transmission link 3411 and the other end of the second transmission link 3421, respectively, and the other end of the first moving element 351, the other end of the second moving element 352 and the slider 353 are connected to form the aforementioned rotation center and are rotatable around the rotation center. One end of the first guide link 2112 and one end of the second guide link 3422 are rotatably connected to the base 33, and the other end of the first guide link 3412 and the other end of the second guide link 3422 are rotatably connected to the first member 31 and the second member 32, respectively.

For the purpose of illustration and understanding of the movement of the entire linkage, the description is continued using a schematic diagram as shown in fig. 8 c. The four hinged supports (W1, W2, W3 and W4) shown in fig. 8c are fixed supports, which are equivalent to the base 33 in the present embodiment, W1, W2, W3 and W4 are arranged around a symmetry center line S, which is equivalent to the symmetry center line O' in the present embodiment, and the mass point M is equivalent to the slide block 353 in the present embodiment, and performs reciprocating linear motion in a certain range only along the direction of the symmetry center line S. Line segments PM and QM correspond to the first moving element 351 and the second moving element 352, respectively, in the present embodiment, line segments PW2 and QW4 correspond to the first transmission link 3411 and the second transmission link 3421, respectively, line segments UW1 and VW3 correspond to the first guide link 3412 and the second guide link 3422, respectively, and line segments UP and VQ correspond to the first component 31 and the second component 32, respectively, in the present embodiment. Wherein, the line segment UW1 is parallel to the line segment PW2, the line segment UP is parallel to the line segment W1W2, the line segment VW3 is parallel to the line segment QW4, the line segment VQ is parallel to the line segment W3W4, the line segment UP is also parallel to the line segment VQ, namely, four points of UW 1W 2P form a parallelogram, four points of VQW4W3 form another parallelogram, and the two quadrangles are symmetrical about the symmetrical center line S. Particle M moves to M ', particles U, P, V and Q move to U ', P, ' V ' and Q ', respectively, four points U ' W1W 2P ' still maintain a parallelogram, V ' Q ' W4W3 still maintains a parallelogram, and line segment U ' P ' remains parallel to line segment V ' Q '. The segment U 'P' and the segment V 'Q' can be kept parallel no matter where the mass point M is located in the motion range of the mass point M in the direction of the symmetrical center line S.

According to the above-described schematic illustration, in the present embodiment, as shown in fig. 8a and 8b, the slider 353 can always keep the lengthwise extending direction of the first member 31 parallel to the lengthwise extending direction of the second member 32 during the reciprocating movement along the center line of symmetry O', and can always keep the first member 31 and the second member 32 without relative movement in the vertical direction, only the relative distance and approach in the horizontal direction, that is, the first member 31 and the second member 32 keep the relative parallel distance and approach movement.

The rotation of the rotating assembly is realized by arranging the sliding block and the connecting rods at all levels together, so that the first part and the second part keep relatively parallel far and close movement, and all the connecting rod parts can rotate and move away and close to each other, thereby further improving the flexibility of vehicle folding; and the transmission mode structure that slider and connecting rod combine together is simple.

In other embodiments, the transmission 34 may have other specific configurations and arrangements. As shown in fig. 8d, the first and second moving members 351 and 352 in the synchronous moving mechanism 35 are a first gear 3511 and a second gear 3521 which are engaged with each other, and the first gear 3511 and the second gear 3521 have the same diameter and the same number of teeth. Specifically, the first gear 3511 and the second gear 3521 have the same diameter and the same number of teeth, so that the first gear 3511 and the second gear 3521 can be meshed in a rotating mode with the same speed and the same direction. The first transmission member 341 is a first rack 3413 engaged with the first gear 3511, and the second transmission member 342 is a second rack 3423 engaged with the second gear 3521. Specifically, the first rack 3413 and the second rack 3423 are symmetrically arranged about the symmetry axis of the first gear 3511 and the second gear 3521 and are correspondingly engaged with the first gear 3511 and the second gear 3521, the rotation of the first gear 3511 and the second gear 3521 drives the first rack 3413 and the second rack 3423 which are correspondingly engaged with the first gear 3511 and the second gear 3521 to move relatively, and the moving directions of the first rack 3413 and the second rack 3423 are opposite, the speeds are the same, and the synchronization is always maintained. The rotation of the gear is converted into the linear motion of the rack in a gear and rack meshing transmission mode; and the structure is simple and the space occupation ratio is small.

In other embodiments, as shown in FIG. 8e, the transmission 34 may have other specific configurations and arrangements. The transmission mechanism 34 further includes a screw 343 connected to the base 33, and a surface of the screw 343 is provided with a thread. Specifically, the screw 343 may be connected to the base 33 directly or indirectly. The screw 343 is a rod with a thread on the surface, and includes a screw rod, etc., and the thread may have a triangular, trapezoidal, rectangular, saw-tooth, and circular arc profile. The screw 343 may rotate relative to the base 33, and the screw 343 may be an integral screw, or may be assembled from two screws, and for simplification, in the exemplary embodiment, the integral screw is provided, and opposite ends of the screw 343 have threads with opposite rotation directions. The first transmission member 341 and the second transmission member 342 are nuts that are sleeved on the screw 343 and are in threaded connection with the screw 343, and the thread rotation direction of the first transmission member 341 is opposite to the thread rotation direction of the second transmission member 342. Specifically, the first transmission member 341 is a nut that is in threaded engagement with one end of the screw 343, and the first transmission member 341 is rotatable relative to the screw 343; the second transmission member 342 is a nut threadedly engaged with the other end of the screw 343, and the second transmission member 342 is rotatable relative to the screw 343. The two nuts have threads with opposite directions of rotation. When the screw 343 is rotated, the two nuts will move relative to the screw 343, and because the two ends of the screw 343 have threads with opposite turning directions, the two nuts can move in opposite directions and at the same speed along the length extension direction of the screw 343, i.e. move away from and close to each other relatively. The first member 31 is connected to the first transmission member 341, and the second member 32 is connected to the second transmission member 342. Specifically, the first member 31 and the second member 32 are fixedly connected to the first transmission member 341 and the second transmission member 342, respectively, and can horizontally move along with the horizontal movement of the first transmission member 341 and the second transmission member 342, so that the first member 31 and the second member 32 can relatively move away from and close to each other.

The screw rod and the two nuts are arranged on the transmission mechanism, the first component and the second component are fixedly connected to the nuts, and the first component and the second component generate relative movement through the relative movement of the nuts and the screw rod. The screw and nut combined transmission mode has the advantages of stable structure and long service life of the transmission assembly.

In some embodiments, as shown in fig. 4a and 4b, the driving mechanism 4 comprises a pulling mechanism 41, and the pulling mechanism 41 is connected with the slider 353 to drive the slider to reciprocate. Specifically, the traction mechanism 41 is capable of generating a driving force and transmitting the driving force to the slider 353, so that the slider 353 reciprocates along the symmetrical center line O'.

In some embodiments, as shown in fig. 4a and 4b, the traction mechanism 41 includes a steel wire 411 and an elastic element 412 fixedly connected to the steel wire 411, the elastic element 412 is fixedly connected to the slider 353, and the elastic element 412 can be deformed to reciprocate the slider 353. Specifically, the elastic element 412 may be a spring having a tensile state and a compression state, and the steel wire 411 has a tension state and a relaxation state, where the tension state and the relaxation state refer to that the length of the steel wire exposed to the outside changes along with the folding state of the vehicle, and the steel wire itself does not deform. The direction of the change in length of the wire 414 and the resilient member 412 is along the center line of symmetry O'. With the tension and relaxation states of the wire 414 switched, correspondingly, the elastic element 412 is switched between the compression and tension states, and the compression and tension of the elastic element 412 drives the slider 353 fixedly connected therewith to reciprocate along the symmetrical center line O'. The steel wire and the elastic element are used as power driving sources of the sliding block, so that the structure is simple, and the installation and the replacement are easy.

In some embodiments, as shown in fig. 11g, the wheel 2 further comprises a third wheel 25. Specifically, the third wheel 25 refers to a driving wheel in the vehicle, i.e., a front wheel shown in fig. 11 g. As shown in fig. 12, the first wheel 21 and the second wheel 22 can be separated on opposite sides of the third wheel 25. Specifically, when the vehicle is folded, the first wheel 21 and the second wheel 22 are separated, the third wheel 25 can move between the first wheel 21 and the second wheel 22, the first wheel 21 is positioned on one side of the third wheel 25, the second wheel is positioned on the other side of the third wheel 25, and the first wheel 21, the second wheel 22, and the third wheel 25 are juxtaposed. The wheels of the vehicle are orderly arranged in a folded state, so that the space occupied by the wheels is reduced.

As shown in fig. 13, the vehicle further includes a front fork 8 connected to the third wheel 25 at opposite sides, respectively, to restrict movement of the third wheel 25. Here, the opposite sides are opposite sides of the third wheel in which the first wheel and the second wheel are separated. Specifically, the third wheel 25 is disposed between the two front forks 8, and two ends of the rotating shaft of the third wheel 25 are respectively connected to one front fork 8, so that the third wheel 25 and the front fork 8 form a rotatable connection, and the motion limitation means that the third wheel 25 cannot swing or move relative to the front fork 8, but only can rotate relative to the front fork 8.

As shown in fig. 14, the vehicle further includes a rotatable mechanism 91 fixedly coupled to the front fork 8 to rotate the front fork 8. Specifically, an end of the front fork 8 away from the third wheel 25 is fixedly connected to an end of the rotatable mechanism 91, and the rotatable mechanism 91 is a part of the steering mechanism 9 in the vehicle, and has a substantially cylindrical structure, and can be disposed in the head pipe 92 of the vehicle or other fixed parts of the frame, and in an exemplary embodiment, the rotatable mechanism 91 is disposed in the head pipe 92 for the following description. The other end of the rotatable mechanism 91 may be fixedly connected to the vertical pipe 93, and may be coaxial with the vertical pipe 93, which is the rotation center line of the rotatable mechanism 91. Under the action of a steering force applied from the outside, the vertical tube 93 rotates around the rotation center line, and drives the rotatable mechanism 91 to rotate around the rotation center line, thereby driving the front fork 8 fixedly connected with the rotatable mechanism 91 to rotate.

As shown in fig. 15, the vehicle further includes a restoring structure 94 connected to the rotatable mechanism 91, wherein the restoring structure 94 is capable of generating a restoring force that brings the rotatable mechanism 91 into a restoring state in response to the rotation of the rotatable mechanism 91. Specifically, the restoring structure 94 is connected to the rotatable mechanism 91, when the restoring structure 94 is subjected to an external force, a reaction force opposite to the external force can be generated, and after the external force is removed, the reaction force of the restoring structure 94 can restore the structural configuration to the initial state, which is to be noted that the initial state refers to a state where the restoring structure 94 is not subjected to the external force.

The operation of the rotatable mechanism 91 for rotation and automatic reset will be described as follows: the rotatable mechanism 91 starts to rotate in the initial rotation direction when an external force is applied to the initial position, and the initial position refers to a position where the rotatable mechanism 91 stays in a state where no external force is applied to the rotatable mechanism. The rotatable mechanism 91 transmits the steering force to the restoring structure 94 under the driving of the rotatable mechanism 91, so that the restoring structure 94 in the initial state generates a reaction force opposite to the initial rotation direction, i.e., the restoring force. And as the rotatable mechanism 91 continues to rotate in the initial rotational direction, the restoring force will continue to increase and apply the restoring force to the rotatable mechanism 91 coupled to the return structure 94.

When the steering force applied by the external force on the rotatable mechanism 91 is greater than the restoring force applied by the restoring structure 94 applied on the rotatable mechanism 91, the rotatable mechanism 91 continues to rotate in the initial rotation direction within a certain range; when the steering force applied to the rotatable mechanism 91 is the same as the restoring force applied to the rotatable mechanism 91, the rotatable mechanism 91 reaches a balanced state and is stationary with respect to the head pipe 92; when the rotatable mechanism 91 is subjected to a steering force smaller than a restoring force applied to the rotatable mechanism 91, the rotatable mechanism 91 rotates back in a direction opposite to the initial rotation direction. After the externally applied steering force is removed, the rotatable mechanism 91 is subjected to the restoring force of the restoring structure 94 only, so that the rotatable mechanism 91 rotates back in the direction opposite to the initial rotation direction. During the rotation in the direction opposite to the initial rotation direction, the restoring structure 94 tends to restore to the initial state, and the restoring force generated by the restoring structure 94 gradually decreases, and the restoring force disappears when the restoring structure 94 completely restores to the initial state, that is, when the restoring force decreases to zero. At this time, the rotatable mechanism 91 is no longer subjected to the restoring force of the restoring structure 94, and rotation, i.e., steering, is stopped. When the restoring structure 94 is restored to the initial state, the rotatable mechanism 91 is correspondingly restored to the initial position. Therefore, the rotatable mechanism 91 stopped from rotating returns to the initial position, i.e., the reset, at the same time when the restoring force disappears.

By arranging the return structure, the return structure can generate a return force for driving the rotatable mechanism to reset along with the rotation of the rotatable mechanism, the direction of the return force is opposite to that of the steering force, and after the steering force is cancelled, the return force can enable the rotatable mechanism to automatically reset without additionally applying a rotating force, so that the steering mechanism has better controllability and the stability of the travelling crane is improved; and the free rotation of the rotatable mechanism is effectively prevented in the folding process, so that the rotatable mechanism can drive the front fork to automatically reset when automatically resetting, and further drive the third wheel to automatically reset, and when the vehicle is folded, the third wheel can be between the first wheel and the second wheel in an automatic righting state, so that the folding process of the vehicle is simplified.

In some embodiments, the return structure 94 is a deformable member that deforms as the rotatable mechanism 91 rotates. Specifically, the restoring structure 94 is a member that is elastically deformed by an external force and is restored to an original state after the external force is removed. The variable component can be an elastic element such as a torsion spring, a tension spring, a compression spring, a coil spring or a rubber cushion. The deformable member deforms with the rotation of the rotatable mechanism 91 to generate a restoring force that restores the deformable member from the deformed state to the original state in the case where the steering force applied from the outside is removed. The deformable component is used as a specific form of the return structure, so that the return structure is simple and convenient to install and replace.

In some embodiments, as shown in fig. 12, the vehicle further includes a first fender 211 and a second fender 221. The first mudguard 211 includes a first shielding portion 2111 and a first curled portion 2112 connected to each other, and the first shielding portion 2111 is fixedly connected to the first member 31 and covers a portion of the first wheel 21. Specifically, the first blocking portion 2111 is fixedly connected to the first member 31, so that the first blocking portion 2111 and the first wheel 21 do not undergo relative displacement. The width of the first shielding portion 2111 is substantially the same as the thickness of the first wheel 21, and the width is a distance between two outer edges of the first shielding portion 2111 facing each other in the axial direction of the first wheel; the thickness is the distance between the two opposite outer edges of the first wheel 21 in the direction of the axis of the first wheel. In this way, the first shielding portion 2111 can effectively cover the first wheel 21 and shield the sewage or the soil brought up by the movement of the first wheel 21, so as to prevent the sewage or the soil from splashing on the vehicle body to pollute the vehicle body. The first blocking portion 2111 is disposed in the circumferential direction of the first wheel 21, and may have a certain curvature, that is, the first blocking portion 2111 is curved in a curved shape and is curved in the circumferential direction of the first wheel 21. On the one hand, the arc-shaped first shielding portion 2111 can be better adapted to the first wheel 21 to save space; on the other hand, the sewage splashed to the first shielding portion 2111 can flow to the ground along the arc surface. The first curled portion 2112 is curved from one end to the other end in a direction away from the first wheel 21, and one end is connected to the first shielding portion 2111. Specifically, the first curled portion 2112 is located at the distal end of the first shielding portion 2111, and the first curled portion 2112 is bent, but the bent direction is opposite to the bent direction of the first shielding portion 2111, that is, the bent direction is away from the first wheel 21. Thus, the first curled portion 2112 can be formed at an open angle with respect to the first wheel 21, and the first curled portion 2112 and the first wheel 21 can be formed as a single supporting point, so that the vehicle can stand alone on the ground in a folded state without falling down, and thus, it is not necessary to provide a separate foreign object for supporting the vehicle, and the vehicle body can be prevented from being contaminated by the contact with the ground due to the non-standing state. The specific arrangement of the second mudguard 221 refers to the first mudguard 211, and will not be described herein again.

On one hand, the mudguard can shield dirt splashed by the wheels, and on the other hand, due to the design of the curled part of the mudguard, the vehicle can stand on the ground after being folded, so that the vehicle body is prevented from contacting the ground and being polluted, and the vehicle in a folded state does not need to be supported by people or other supporting parts. The structural design is ingenious, and the cost is saved.

The working process of vehicle folding according to the embodiment of the present invention is specifically described as follows: as shown in fig. 9, the vehicle according to the embodiment of the present invention includes a footrest 5 and a chute 6. As shown in fig. 9 and 10, a pull handle 51 is provided at the front end of the step 5, and the front end refers to the front side of the vehicle in the operating state. The pull handle 51 is fixedly connected with one end of the traction steel wire 52, the other end of the traction steel wire 52 is connected with the steel wire collection module 53, the steel wire collection module 53 comprises six mutually independent steel wires, and the six independent steel wires are controlled by the traction steel wire 52. As shown in fig. 11a, in order to maintain the aesthetic appearance of the exterior of the vehicle body, six independent wires are provided in the interior space of the vehicle body, respectively corresponding to the respective lock pins 54 connected to the interior of the vehicle body, and include two rear fork lock pins 541, two vehicle body lock pins 542, and two chute lock pins 543. When folding the vehicle, the user may pull the pull tab 51 in the direction of extension of the length of the footrest 5 (indicated by the arrow in fig. 10), the pull wire 52 pulls the pull tab 51 and transmits the force to the wire collection module 53, and the wire collection module 53 transmits the force to the individual wires.

As shown in fig. 11b, two steel wires are respectively connected to the two back fork locking pins 541, the back fork locking pins 541 may be cylindrical structures, one end of each back fork locking pin 541 has a protrusion, the back fork locking pins 541 have through holes, and the steel wires may be directly connected to the protrusions or may be disposed in the through holes to be fixedly connected to the back fork locking pins 541. The end of the footrest 5 is provided with a cavity and the end of the first part 31 adjacent to the footrest 5 is also provided with a cavity and the two cavities are coaxial and together form a receiving cavity for receiving the rear fork locking pin 541. When the vehicle is in operation, the rear fork locking pin 541 is located partially in the cavity of the first member 31 and partially in the cavity at the end of the footrest 5 to connect the first member 31 to the footrest 5. Similarly, the end of the second member 32 is provided with the same cavity so that the second member 32 is connected to the footboard 5. By connecting the two rear fork locking pins 541, the first member 31 and the second member 32 do not move relative to the pedal 5. When the vehicle needs to be folded, the wire connected to the rear fork locking pin 541 receives the force of the traction wire 52, and the wire connected to the rear fork locking pin 541 pulls the rear fork locking pin 541 in the direction indicated by the arrow in fig. 11b, so that the two rear fork locking pins 541 are separated from the cavities of the first and second members 31 and 32, and thus, the first and second members 31 and 32 are disconnected from the footboard 5 to move relative to the footboard 5.

As shown in fig. 11c, two body locking pins 542 are correspondingly connected to two wires, respectively, and the structure and arrangement principle of the body locking pins are the same as those of the rear fork locking pin 541, and the body locking pins 542 are partially located in the cavity of the head of the footrest 5 and partially located in the cavity of the chute 6, so that the chute 6 is connected to the footrest 5. By connecting the two body lock pins 542, the two inclined tubes 6 on both sides of the head of the footrest 5 do not move relative to the footrest 5. When the vehicle needs to be folded, the steel wire connected to the body locking pins 542 receives a force, the steel wire pulls the body locking pins 542 in a direction as indicated by arrows in fig. 11c, and the two body locking pins 542 are disengaged from the cavities of the two inclined tubes 6, so that the two inclined tubes 6 can be disconnected from the heads of the footrests 5 and separated to move relative to the footrests 5.

As shown in fig. 11d, the two remaining steel wires are respectively connected to two inclined tube locking pins 543, and the structure and arrangement principle are the same as those of the vehicle body locking pins 542, when the vehicle needs to be folded, the steel wires pull the inclined tube locking pins 543 in the direction indicated by the arrows in fig. 11d, and the two inclined tube locking pins 543 are separated from the cavities of the two head tubes 92, so that the head tubes 92 can be separated from the two inclined tubes 6 located at both sides of the head tubes 92.

As described above, the rear fork lock pin 541 can control connection and disconnection of the first member 31, the second member 32, and the footrest plates 5, the vehicle body lock pin 542 can control connection and disconnection of the footrest plates 5 and the two inclined tubes 6, and the inclined tube lock pin 543 can control connection and disconnection of the two inclined tubes 6 and the head tube 92.

As shown in fig. 11e and 11f, a steel wire 411 and an elastic element 412 for controlling the opening and closing of the first member 31 and the second member 32 are provided at the bottom of the footrest 5, and as shown in fig. 11e, one end (left end shown in fig. 11 e) of the two steel wires 411 is connected to the two inclined tubes 6 and wound around the rotation joints of the footrest 5 and the inclined tubes 6, and when the vehicle body is in the unfolded state, the steel wire 411 is in the tensioned state, and the elastic element 412 is in the compressed state, and correspondingly, as shown in fig. 11f, the slider 353 is at the top dead center position, and the first member 31 and the second member 32 can be relatively close to each other, so that the first wheel 21 and the second wheel 22 are in the combined state. As shown in fig. 11e, when the vehicle body is folded, the pedal 5 and the inclined tube 6 can rotate around the rotating joint, the steel wire 411 wound on the rotating joint is partially released, so that the steel wire 411 is in a loose state, the elastic element 412 is in a stretching state, and the first member 31 and the second member 32 are already separated from the pedal 5 during the folding process, so that, as shown in fig. 11f, when the elastic element 412 in the stretching state pushes the slider 353 to move from the upper dead point to the lower dead point, the first member 31 and the second member 32 can be moved relatively far away, and the first wheel 21 and the second wheel 22 are driven to be separated.

As shown in fig. 11g, pulling the pull tab 51, the six steel wires connected thereto are simultaneously applied with force by the action of the pull wire, and the locking pins fixedly connected to the respective steel wires are pulled, so that the first member and the second member are separated from the foot board, the foot board is separated from the chute, and the chute is separated from the head pipe. Then, the pedal plate 5 rotates clockwise, the inclined tube 6 rotates counterclockwise, the pedal plate 5 and the inclined tube 6 are relatively close to each other and tend to be attached to each other, in the rotating process, a steel wire of the driving mechanism is switched from a tensioning state to a loosening state, correspondingly, the elastic element is switched from a compression state to a tension state, the sliding block is driven to move, and then the first component and the second component which are separated from the pedal plate are driven to move relatively far away, so that the first wheel and the second wheel are separated. Meanwhile, a driving wheel (a third wheel) of the vehicle is relatively close to a unpowered wheel (a first wheel and a second wheel) and moves towards a space between the first wheel and the second wheel until the pedal plate 5 and the inclined tube 6 rotate to be in a fit state, the third wheel also moves to be between the first wheel and the second wheel, the three wheels are arranged in parallel, and if necessary, the handlebar can be bent at two sides of the vertical tube, so that the whole folding process of the vehicle is completed, and the folding state shown in fig. 12 is formed.

As shown in fig. 12, the first wheel 21 and the second wheel 22 are provided with a first fender 211 and a second fender 221, respectively, and the rear portions of the fenders are provided with extended portions that can serve as support points of the vehicle in a folded state, avoiding toppling over without support in an upright state.

The folded vehicle has the advantages that the three wheels are arranged in parallel, the space structure is compact, the size of the folded vehicle in a storage state is reduced, the folded vehicle can stand on the ground independently after being folded, the projection area of the folded vehicle relative to the ground is further reduced, and the occupied space is saved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (13)

1. A vehicle, characterized by comprising:

a wheel (2) comprising a first wheel (21) and a second wheel (22) which can be separated and combined;

-a transmission assembly (3) comprising a first part (31) connected to said first wheel (21) and a second part (32) connected to said second wheel (22), said first part (31) and said second part (32) being relatively far apart and close together;

a drive mechanism (4) for driving the first member (31) and the second member (32) relatively away from and towards each other.

2. The vehicle according to claim 1, characterized in that a first rotating structure (23) is fixedly connected to the first wheel (21); the second wheel (22) is fixedly connected with a second rotating structure (24); the first and second rotating structures (23, 24) are connectable to rotate synchronously about a first direction and separable to be spaced apart by a preset distance in the first direction.

3. Vehicle according to claim 2, characterized in that the edge of said first rotating structure (23) forms first concave-convex teeth (231), and the edge of said second rotating structure (24) forms second concave-convex teeth (241), said first teeth (231) being engageable with said second teeth (241).

4. The vehicle according to claim 1, characterized in that the transmission assembly (3) further comprises:

a base (33);

a transmission mechanism (34) connected with the base (33), wherein the transmission mechanism (34) comprises a first transmission piece (341) and a second transmission piece (342) which can be relatively far away and close;

wherein the first part (31) is connected to the first transmission element (341) and the second part (32) is connected to the second transmission element (342); the first component (31) and the second component (32) move in parallel to relatively move away from and close to each other under the driving of the first transmission piece (341) and the second transmission piece (342).

5. The vehicle according to claim 4, characterized in that the transmission assembly (3) further comprises:

a synchronous movement mechanism (35) connected to the base (33) and movable relative to the base (33); the synchronous moving mechanism (35) includes a first moving member (351) and a second moving member (352) that move in opposite directions;

wherein the first moving member (351) is connected to the first transmission member (341), and the second moving member (352) is connected to the second rotation member (342).

6. The vehicle of claim 5,

the synchronous movement mechanism (35) further comprises a slider (353) which can move relative to the base (33); the first moving part (351) and the second moving part (352) are connecting rods which are both rotatably connected with the sliding block (353);

the first transmission member (341) includes a first transmission link (3411) and a first guide link (3412); one end of the first transmission link (3411) is rotatably connected with the first moving part (351), and the other end of the first transmission link (3411) is rotatably connected with the first part (31); one end of the first guide connecting rod (3412) is rotatably connected with the base (33), and the other end of the first guide connecting rod is rotatably connected with the first part (31);

the second transmission part (342) comprises a second transmission link (3421) and a second guide link (3422); one end of the second transmission connecting rod (3421) is rotatably connected with the second moving part (352), and the other end of the second transmission connecting rod (3421) is rotatably connected with the second component (32); one end of the second guide connecting rod (3422) is rotatably connected with the base (33), and the other end of the second guide connecting rod is rotatably connected with the second component (32);

wherein the first transmission link (3411) and the second transmission link (3421) are both rotatably connected to the base (33).

7. The vehicle of claim 5,

the first moving part (351) and the second moving part (352) are a first gear (3511) and a second gear (3521) which are meshed with each other, and the diameter and the number of teeth of the first gear (3511) and the second gear (3521) are the same; the first transmission member (341) is a first rack (3413) engaged with the first gear (3511), and the second transmission member (342) is a second rack (3423) engaged with the second gear (3521).

8. The vehicle of claim 4, characterized in that the transmission (34) further comprises:

the screw rod (343) is connected with the base (33), and the surface of the screw rod (343) is provided with threads;

the first transmission piece (341) and the second transmission piece (342) are nuts which are sleeved on the screw rod (343) and are in threaded connection with the screw rod (343), and the thread rotating direction of the first transmission piece (341) is opposite to that of the second transmission piece (342); the first component (31) is connected to the first transmission element (341), and the second component (32) is connected to the second transmission element (342).

9. The vehicle according to claim 6, characterized in that the drive mechanism (4) comprises a traction mechanism (41), the traction mechanism (41) being connected to the slide (353) to bring the slide (353) to a reciprocating motion.

10. The vehicle according to claim 9, characterized in that the traction mechanism (41) comprises a steel wire (411) and an elastic element (412) fixedly connected with the steel wire (411), the elastic element (412) is fixedly connected with the slider (353), and the elastic element (412) can generate deformation to enable the slider (353) to reciprocate.

11. The vehicle according to claim 1, characterized in that the wheel (2) further comprises a third wheel (25), the first wheel (21) and the second wheel (22) being separable on opposite sides of the third wheel (25) in the vehicle folded state, the vehicle further comprising:

a front fork (8) connected to said third wheel (25) on said opposite sides, respectively, to limit the movement of said third wheel (25);

the rotatable mechanism (91) is fixedly connected with the front fork (8) so as to drive the front fork (8) to rotate;

and the restoring structure (94) is connected with the rotatable mechanism (91), and the restoring structure (94) can generate restoring force for driving the rotatable mechanism (91) to reset along with the rotation of the rotatable mechanism (91).

12. The vehicle of claim 11, characterized in that the return structure (94) is a deformable member that deforms as the rotatable mechanism (91) moves.

13. The vehicle of claim 1, further comprising:

a first fender (211) including a first shielding portion (2111) and a first curled portion (2112) that are connected; the first shutter portion (2111) is fixedly connected to the first member (31) and covers a portion of the first wheel (21); the first curled portion (2112) is curved in a direction away from the first wheel (21) from one end to the other end, the one end being connected to the first shielding portion (2111);

a second fender (221) including a second shielding portion (2211) and a second curled portion (2212) connected to each other; the second shielding portion (2211) is fixedly connected with the second component (32) and covers part of the second wheel (22); the second curled portion (2212) is curved in a direction away from the second wheel (22) from one end to the other end, the one end being connected to the second shielding portion (2211).

Images