TW202005861A - Foldable vehicle reduces the size of the vehicle when the upper frame is in the folded position - Google Patents

Abstract

A foldable vehicle comprises a frame set. The frame set includes a chassis frame and an upper frame pivotally coupled to the chassis frame. A driving device is arranged between the chassis frame and the upper frame. One end portion of the driving device is pivotally connected to the chassis frame, and the other end of the driving device is pivoted with the chassis frame. One push rod of the driving device is pivoted with the upper frame. The driving device is connected with the upper frame to move the upper frame to an unfolded position or a folded position. When the upper frame is in the folded position, the distance between the front wheel and the rear wheel of the vehicle is smaller than the distance between the front wheel and the rear wheel when the upper frame is in the unfolded position, so that the size of the vehicle is reduced when the upper frame is in the folded position.

Description

Collapsible vehicle

The invention relates to a foldable vehicle, in particular to a vehicle having one front wheel at one end responsible for steering and two rear wheels at the other end away from the steering, and can fold and shorten the wheelbase between the front and rear wheels.

Wheeled mobile tools are often used as mobility tools, one of which is a vehicle with a front wheel at the end of the turn and two rear wheels at the end away from the steering. The vehicle has a total of three The wheels touch the ground, so they can be rided without relying on the rider's sense of balance. It is a relatively easy-to-use mobility tool, and such vehicles are often used as mobility tools by people who are elderly or have limited mobility.

In order to maintain a stable system of travel and provide people to ride, the front wheels and the two rear wheels need to have a certain wheelbase, but such vehicles are usually large and not easy to store and carry. However, if the user of the vehicle is For the elderly or people with limited mobility, when going out, the vehicle is not easy or cannot be put into the storage space of the car, which causes inconvenience for those who need to use the vehicle.

To solve this problem, the present invention provides a collapsible vehicle, including: an upper frame, including a main pipe and a first pivot portion and a second pivot portion formed on the main pipe and spaced apart from each other, a handlebar, and The upper frame is pivotally connected, the first pivot portion is interposed between the handlebar and the second pivot portion, provides a seat adjustment assembly for riding, is combined on the upper frame, and a rotatable front wheel is pivotally combined with the handlebar, A chassis frame includes a pivot arm. The chassis frame further includes a pivot portion spaced from the pivot arm. The pivot arm of the chassis frame is pivotally connected to the first pivot portion of the upper frame. The upper frame can pivot relative to the chassis frame Turned to a folded position or an unfolded position, two rear wheels are rotatably combined with the chassis frame, the seat adjustment assembly is interposed between the front wheel and the two rear wheels, and a driving device is pivotally connected to the pivot portion The driving device further includes a movable push rod. The end of the push rod is pivotally connected to the second pivot portion of the upper frame. The movement of the push rod is to link the upper frame to the folded position or the expanded position. When the upper frame is in the expanded position, The distance between the front wheel and the two rear wheels is greater than the distance between the front wheel and the two rear wheels when the upper frame is in the folded position, and when the upper frame is in the deployed position, the distance between the seat adjustment assembly and the chassis frame is less than The distance between the seat adjustment assembly and the chassis frame when the upper shelf is in the folded position.

The vehicle of the invention is provided with a relatively pivotable upper frame and chassis frame, so that when the upper frame is in the deployed position, the volume of the vehicle and the wheelbase between the front and rear wheels are appropriate and suitable for riding by the person. When the upper frame is in the folded position At this time, the front and rear wheel tracks of the vehicle are reduced, which is advantageous for the storage and carrying of the vehicle (for example, it is easier to put it in the storage space of the car).

The upper rack further includes a positioning seat formed at one end, the positioning seat includes a support portion formed at the lower end, the seat adjustment assembly is mounted on the positioning seat, and when the upper rack is in the deployed position, the support portion abuts against On the chassis frame, when the upper frame is in the folded position, the support portion is separated from the chassis frame.

Wherein the positioning seat further includes a pivoting portion separated from the supporting portion, the seat adjustment assembly further includes a first riser, the first riser includes a lug, and the convexity of the first riser The ear is pivotally connected to the pivoting portion of the positioning seat, and the seat adjustment assembly can be pivoted relative to the positioning seat to a first position where seating can be provided or a second position where seating cannot be provided. When the upper rack is in the deployed position, the The positioning adjustment device is located at the first position, and when the upper shelf is located at the folding position, the positioning adjustment device is located at the second position.

The collapsible vehicle further includes a bracket including a connecting frame, the connecting frame includes a groove and a positioning hole spaced from the groove, a storage basket, mounted on the bracket, and a first pivot The pivoting portion further includes a pivot hole and a limiting hole spaced apart from the pivot hole, the first pivot is pivotally connected to the groove of the connecting frame, the lug of the first riser and the pivot hole of the positioning seat, The seat adjustment assembly and the bracket can be pivoted to the first position or the second position using the first pivot as the axis, and a second pivot can be detachably combined with the positioning hole of the bracket and the limiting hole of the positioning seat , When the seat adjustment assembly and the bracket are in the first position and the second pivot is combined with the positioning hole and the limiting hole, the seat adjustment assembly and the bracket are not allowed to pivot from the first position to the second position, When the seat adjustment assembly and the bracket are in the first position and the second pivot is separated from the positioning hole and the limiting hole, the seat adjustment assembly and the bracket are allowed to pivot from the first position to the second position.

The collapsible vehicle further includes: a quick release assembly, the supporting portion further includes a locking plate, the locking plate includes a slot, the quick release assembly is combined with the slot of the supporting portion, and the chassis frame further includes For a side bar, the quick release assembly can be operated in a released state or an engaged state. When the upper frame is in the deployed position, the supporting portion abuts the side bar, and when the upper frame is in the folded position, the supporting portion Separated from the side bar, when the upper rack is in the deployed position and the quick release assembly is in the engaged state, the upper rack is not allowed to pivot from the deployed position to the collapsed position, when the upper rack is in the deployed position and the quick release assembly is operated to release In the state, the upper rack is allowed to pivot from the deployed position to the folded position.

The side bar further includes a perforation. When the upper rack is in the deployed position and the quick release assembly is in a tight state, the quick release assembly is fitted with the perforation. When the upper rack is in the deployed position and the quick release assembly is in the release state, the quick release assembly and the perforation Separate.

Wherein the seat adjustment assembly is interposed between the second pivot portion and the two rear wheels, the chassis frame includes a side bar, the pivot arm is formed at one end of the side bar, and the chassis frame further includes a side A rear wheel shaft at the other end of the lever, the two rear wheels are rotatably coupled to both ends of the rear wheel shaft, and the pivot portion is formed on the rear wheel shaft.

The collapsible vehicle can be rided on. The vehicle includes: an upper frame including a main pipe and a first pivot portion and a second pivot portion formed on the main pipe and spaced apart from each other The seat adjustment assembly is combined with the upper frame. A chassis frame includes a pivot arm. The chassis frame further includes a pivot portion spaced from the pivot arm. The pivot arm of the chassis frame is pivotally connected to the first pivot portion of the upper frame , The upper frame can be pivoted to a collapsed position or an expanded position relative to the chassis frame, a driving device is pivotally connected to the pivot portion, the driving device further includes a movable push rod, the end of the push rod is connected to the upper frame The second pivot portion is pivotally connected, and the push rod movement is linked to the upper frame pivoting to the folded position or the expanded position. When the upper frame is at the expanded position, the distance between the seat adjustment assembly and the chassis frame is less than when the upper frame is at the folded position Adjust the distance between the components and the chassis frame.

The upper rack further includes a positioning seat formed at one end, the positioning seat includes a support portion formed at the lower end, the seat adjustment assembly is mounted on the positioning seat, and when the upper rack is in the deployed position, the support portion abuts against On the chassis frame, when the upper frame is in the folded position, the support portion is separated from the chassis frame.

Wherein the positioning seat further includes a pivoting portion separated from the supporting portion, the seat adjustment assembly further includes a first riser, the first riser includes a lug, and the convexity of the first riser The ear is pivotally connected to the pivoting portion of the positioning seat, and the seat adjustment assembly can be pivoted relative to the positioning seat to a first position where seating can be provided or a second position where seating cannot be provided. When the upper rack is in the deployed position, the The positioning adjustment device is located at the first position, and when the upper shelf is located at the folding position, the positioning adjustment device is located at the second position.

The invention will be understood more clearly with the detailed description of illustrative embodiments of the invention described in conjunction with the drawings.

The vehicle of the present invention may be a vehicle 10 (tricycle) which has one wheel in front and two wheels in the rear and can provide ride. Referring to the figures 1 to 3, the vehicle 10 includes a frame group 12, the frame group 12 includes an upper frame 20 and a chassis frame 60 pivotally connected together, wherein the upper frame 20 includes two parallel main pipes 22 and fixed A head pipe 24 at one end of the two main pipes 22, the upper frame 20 further includes a positioning seat 30 fixed on the other end of the two main pipes 22 with a supporting portion 42 and a pivoting portion 36, the positioning seat 30 includes parallel Two spaced-apart wing plates 34 and a seat plate 32 extending between the two wing plates 34 side, the supporting portion 42 and the pivoting portion 36 are formed at the bottom end and the top end of each wing plate 34 ( A total of two support portions 42 and two pivotal portions 36), each of the pivotal portions 36 includes a pivot hole 36A and a limiting hole 36B spaced from the pivot hole 36A, each pivotal portion 36 further includes a A groove 38 between the pivot hole 36A and the limiting hole 36B, one of the two supporting portions 42 further includes a locking plate 44, each locking plate 44 includes a slot 46, and the slot 46 of the locking plate 44 A quick-release assembly 48 is provided on the top, and the quick-release assembly 48 can be operated in a released state or an engaged state. Referring to FIG. 3, in essence, the second pivotal portion 52 is interposed between the first pivotal portion 23 and Between the positioning base 30, the first pivot portion 23 is between the first tube 24 and the second pivot portion 52.

The vehicle 10 further includes a handle 28 and a front wheel 26 rotatably coupled to the handle 28. The handle 28 is pivotally connected to the head pipe 24 of the upper frame 20 (as shown in FIGS. 1 and 2).

The vehicle 10 further includes a seat adjustment assembly 14 combined with the upper frame 20 and a backrest assembly 16 combined with the seat adjustment assembly 14, wherein the seat adjustment assembly 14 includes a first riser 151 and a seat cushion 351, wherein the first The riser 151 includes two lugs 157 formed on the outer surface. The first riser 151 of the seat adjustment assembly 14 is accommodated between the two wings 34 of the positioning seat 30, and each lug 157 is aligned with each pivot hole 36A, and a first pivot 111 is used to communicate with the first The two lugs 157 of the standpipe 151 and the pivot holes 36A are pivotally connected, so that the seat adjustment assembly 14 and the backrest assembly 16 can pivot together with the first pivot 111 as the rotation axis to a first A position (as shown in Figures 2 to 4) or a second position (as shown in Figures 5 to 7) where riding is not available, see Figure 3, in essence the first position refers to the seat cushion 351 is substantially parallel to the ground, so the seat cushion 351 can provide a seat for the person. Refer to FIG. 5, in essence, the second position refers to the state where the seat cushion 351 is substantially perpendicular to the ground, so the seat cushion 351 No one is allowed to ride.

According to the drawings, the vehicle 10 further includes a bracket 90 and a storage basket 99 pivoted to the bracket 90. The bracket 90 includes a connecting frame 92 having a U-shaped cross section. The connecting frame 92 includes symmetrical and parallel spaced apart from each other. Two side walls 94 open, each side wall 94 includes a groove 96 and a positioning hole 97 spaced from the groove 96, the bracket 90 further includes side grip rods 98 extending from each side wall 94, the storage basket 99 two The center of the side is pivotally connected to each side grip 98, so that the storage basket 99 can be automatically adjusted to a horizontal state because of its own weight.

The two side walls 94 of the connecting frame 92 of the bracket 90 are accommodated between the two lugs 157 of the corresponding first riser 151 and the pivoting portion 36 of the positioning seat 30, and the first pivot 111 and The grooves 96 of the connecting frame 92 are pivotally connected, and it is worth mentioning that the bracket 90 is substantially parallel to the positioning base 30 and is positioned under the effect of gravity without external forces other than gravity. The hole 97 is aligned with the limiting hole 36B, and each of the grooves 38 is used to accommodate the two side grips 98, as shown in Figures 3 and 4 when the seat adjusting device 14 is in the first position. The two pivot shafts 113 are detachably combined with the positioning holes 97 and the limiting holes 36B, which restricts the seat adjustment assembly 14, the backrest assembly 16, the bracket 90 and the storage basket 99 to remain in the first position and cannot be pivoted to the second position Location (as shown in Figures 5 and 6).

The chassis frame 60 includes two symmetrical side bars 66. Each side bar 66 includes a front end portion 62, a rear end portion 64, and a through hole 67 between the front and rear end portions 62, 64. The chassis frame 60 further It includes two pivot arms 74 formed at the front end 62 of each side bar 66 and a rear axle 69, the rear axle 69 is interposed between the two pivot arms 74 and the rear end 64, and the chassis frame 60 further includes The two axle portions 70 extending from the rear axle 69 and one axle rod 72 formed between the two axle portions 70, the chassis frame 60 further includes a plurality of frame rods 76 formed on each side rod 66.

Referring to FIG. 2, the two pivot arms 74 of the chassis frame 60 are pivotally connected to the first pivot portion 23 of the upper frame 20, and the upper frame 20 can be opposite to the chassis frame 60 according to the pivot axis defined by the first pivot portion 23 Pivot to a deployed position (as shown in Figures 2 and 3) and a collapsed position (as shown in Figure 7), in addition, when the upper rack 20 is in the deployed position and when the quick release assembly 48 is in the released state, the quick The disassembly unit 48 is separated from the perforation 67 of the chassis frame 60, allowing the upper frame 20 to pivot from the deployed position to the collapsed position. When the upper frame 20 is in the deployed position and the quick release component 48 is in the engaged state, the quick release component 48 is embedded with the perforation 67 Close, the upper shelf 20 is not allowed to pivot from the deployed position to the folded position.

The vehicle 10 includes a motor 84 fixed to the front end 62 of the chassis frame 60 and a battery 80 fixed to the rear end 64. The battery 80 supplies power required for the motor 84 to operate, and the motor 84 is interlocked with a driving wheel 84A The vehicle 10 further includes two rear wheels 88 that are rotatably coupled to both ends of the rear wheel shaft 69. A driven wheel 84B is rotatably provided on the rear wheel shaft 69, and is wound between the driving wheel 84A and the driven wheel 84B. A flexible transmission member 84C is provided, and the motor 84 operates to link the flexible transmission member 84C through the driving wheel 84A to make the driven wheel 84B rotate together with the two rear wheels 88. In addition, a cover plate is provided on the plurality of rack rods 76 78. The cover plate 78 covers the driven wheel 84 and the battery 80. In addition, the driving wheel 84A is further interlocked with a set of foot levers 85, so that the foot lever 85 can also drive the driving wheel The 84A rotation causes the two rear wheels 88 to move and propel the vehicle 10 forward.

The vehicle 10 of the present invention further includes a driving device 54 installed between the upper frame 20 and the chassis frame 60, the driving device 54 including a movable push rod 56 and an end portion 58. The end portion 58 of the driving device 54 is pivotally connected to the shaft 72 of the pivot portion 70, and the push rod 56 is pivotally connected to the second pivot portion 52 of the upper frame 20, so that when the push rod 56 moves, the upper frame 20 is pivoted to the extended position (As shown in Figures 2 and 3) or folded position (as shown in Figure 7). The driving device 54 may be constituted by a pneumatic cylinder or an electric telescopic device. In the scheme of the present invention, the electric telescopic device is used as the driving device 54, and the battery 80 system supplies power required for the driving device 54 to operate.

For the convenience of explanation, it is assumed that the upper frame 20 of the vehicle 10 is in the deployed position (as shown in FIGS. 2 and 3), so that the respective support portions 42 abut against the side bars 66 of the chassis frame 60, and the The quick release assembly 48 is operated in an engaged state, so that the quick release assembly 48 is fitted with the through hole 67 of the side rod 66 of the chassis frame 60, so that the upper frame 20 is fixed in the deployed position and cannot be pivoted to the collapsed position, the seat adjustment The assembly 14 is located in the first position, the seat cushion 351 is substantially parallel to the ground and can provide a person to ride on, and the two support portions 42 abut the two side bars 66 of the chassis frame 60 to support the person to ride on the seat cushion 351 The upper gravity, in addition, when the upper rack 20 is in the deployed position, the distance between the front wheel 26 and the two rear wheels 88 is the largest.

Suppose that to collapse the vehicle 10, first remove the second pivot 113, so that the seat adjustment assembly 14 can be operated to pivot from the first position to the second position, and when the seat adjustment assembly 14 pivots, the The first riser 151 pivots together against the connecting frame 92 of the pressing bracket 90, and the backrest assembly 16 is pivoted synchronously with the seat adjustment assembly 14 and pivots to the second position at the seat adjustment assembly 14 After that, the quick release assembly 48 is operated in a released state, and the driving device 54 is further operated to extend the push rod 56 to extend, so that the upper frame 20 pivots from the deployed position to the collapsed position, and the upper frame 20 pivots from the expanded position to the collapsed position During the process, the front wheel 26 pivots toward the two rear wheels 88, and the seat adjustment assembly 14, the backrest assembly 16 and the bracket 90 pivot away from the chassis frame 60 when the vehicle 10 is racked When the 20 is in the collapsed position, the distance between the front wheel 26 and the two rear wheels 88 is less than the distance between the front wheel 26 and the two rear wheels 88 when the upper frame 20 is in the deployed position.

The vehicle 10 of the present invention is provided with a relatively pivotable upper frame 20 and a chassis frame 60, so that when the upper frame 20 is in the deployed position, the volume of the vehicle 10 and the wheelbase between the front and rear wheels 26, 88 are appropriate and suitable for riding By the way, when the upper shelf 20 is at the folded position, the front and rear wheels 26 and 88 of the vehicle 10 are reduced in wheelbase, which is beneficial to the storage and carrying of the vehicle 10 (for example, it is easier to put it in the car's storage space).

The two support portions 42 of the seat adjustment assembly 14 of the vehicle 10 of the present invention provide sufficient support force, so that the collapsible vehicle 10 of the present invention still has sufficient support even in the type in which the upper frame 20 and the chassis frame 60 are not integrally formed Structural strength.

The basic teachings of the present invention have been explained, and many extensions and changes will be obvious to those skilled in the art. For example, the position of the second pivot portion 52 can be changed, for example, the position of the second pivot portion 52 can be after the positioning seat 30, in other words, the positioning seat 30 is between the first and second pivot portions 23 Between 52 and 52, even so, the displacement of the push rod 56 of the driving device 54 can still push the upper rack 20 to pivot to the expanded position or the folded position.

Since the invention disclosed in the specification can be implemented in other specific forms without departing from the spirit or general characteristics of the invention, and some of these specific forms have been pointed out, the embodiments disclosed in the specification should be regarded as illustrative rather than limiting. The scope of the present invention is defined by the appended patent application scope, not by the above description, and all changes to the equivalent meaning and scope falling within the patent application scope will still be included in its scope.

10 ‧ ‧ ‧ vehicle 12 ‧ ‧ ‧ frame group 14 ‧ ‧ ‧ seat adjustment assembly 16 ‧ ‧ ‧ backrest assembly 20 ‧ ‧ ‧ shelf 22 ‧ ‧ ‧ supervisor 23 ‧ ‧ ‧ first hub 24 ‧ ‧ ‧ head 26 ‧‧‧ Front wheel 28 ‧ ‧ ‧ ‧ handlebar 30 ‧ ‧ ‧ positioning seat 32 ‧ ‧ ‧ ‧ seat plate 34 ‧ ‧ ‧ wing plate 36 ‧ ‧ ‧ pivot joint 36A ‧ ‧ ‧ pivot hole 36B ‧ ‧ ‧ limit hole 38 ‧‧‧Groove 42‧‧‧Supporting part 44‧‧‧Locking plate 46‧‧‧‧Slotted 48‧‧‧‧Quick release assembly 52‧‧‧‧Pivot part 54‧‧‧‧Drive device 56‧‧‧Push rod 58 ‧ ‧ ‧ end part 60 ‧ ‧ ‧ chassis frame 62 ‧ ‧ ‧ front end part 64 ‧ ‧ ‧ rear end part 66 ‧ ‧ ‧ side bar 67 ‧ ‧ ‧ perforation 69 ‧ ‧ ‧ rear axle 70 ‧ ‧ ‧ shaft pivot 72 ‧‧‧Pivot arm 74‧‧‧Pivot arm 76‧‧‧Rack 78 ‧‧‧‧Cover 80 80‧‧‧Battery 84‧‧‧Motor 84A‧‧‧Drive wheel 84B‧‧‧Driven wheel 84C‧‧‧‧ Flexible transmission part 85‧‧‧Foot lever 88‧‧‧Rear 90 90‧‧‧Bracket 92‧‧‧Link frame 94‧‧‧Side wall 96‧‧‧Groove 97‧‧‧Locating hole 98‧‧‧ side Grip rod 99‧‧‧ storage basket 111‧‧‧ first pivot 113 ‧‧‧‧ second pivot 151 ‧‧‧‧ first riser 157‧‧‧‧lug 351‧‧‧ cushion

Fig. 1 is an exploded perspective view of the collapsible vehicle of the present invention.

Fig. 2 is a perspective combined view of the collapsible vehicle of the present invention.

Figure 3 is a side view of the collapsible vehicle of the present invention.

Figure 4 is a cross-sectional view taken along line 4-4 of Figure 2.

FIG. 5 is a state diagram of the seat adjustment assembly of the collapsible vehicle of the present invention pivoted to the second position.

Figure 6 is a cross-sectional view of the seat adjustment assembly pivoted to the second position.

FIG. 7 is a state diagram in which the upper frame of the collapsible vehicle of the present invention is pivoted to the collapsed position.

All drawings are only for explaining the basic teachings. The drawings will explain the number, position, relationship, and size extension of the elements constituting the illustrative embodiment or belong to industry skills after reading and understanding the following description. In addition, after reading and understanding the following description, changes in the exact size and size ratio with specific strength, weight, strength, and similar requirements are also industry skills.

In different drawings, the same reference numerals are used to indicate the same or similar elements; in addition, please understand the text such as "top", "bottom", "first", "second", "forward", "backward", "reverse" Direction, front, back, height, width, length, end, side, horizontal, vertical, etc. and similar terms are only convenient for the viewer Reference is made to the figures and only used to help describe the illustrative embodiments.

10‧‧‧Vehicle

12‧‧‧frame set

14‧‧‧ Seat adjustment kit

16‧‧‧Back component

20‧‧‧ Shelf

22‧‧‧Supervisor

23‧‧‧ The First Hub

24‧‧‧ first tube

26‧‧‧Front wheel

28‧‧‧handlebar

30‧‧‧Positioning seat

32‧‧‧seat board

34‧‧‧wing

36‧‧‧Pivot Department

36A‧‧‧Pivot hole

36B‧‧‧Limit hole

38‧‧‧groove

42‧‧‧Support Department

44‧‧‧locking board

46‧‧‧Slotted

48‧‧‧Quick release assembly

52‧‧‧Second Hub

54‧‧‧Drive device

56‧‧‧Putter

58‧‧‧End

60‧‧‧Chassis rack

62‧‧‧Front end

64‧‧‧ Rear

66‧‧‧Side rod

67‧‧‧Perforation

69‧‧‧Rear axle

70‧‧‧ pivot

72‧‧‧Shaft

74‧‧‧ articulated arm

76‧‧‧ pole

78‧‧‧cover

80‧‧‧ battery

84‧‧‧Motor

84A‧‧‧Drive wheel

84B‧‧‧driven wheel

84C‧‧‧Flexible transmission parts

85‧‧‧foot pedal

88‧‧‧Rear wheel

90‧‧‧Bracket

92‧‧‧Link frame

94‧‧‧Sidewall

96‧‧‧Trench

97‧‧‧Locating hole

98‧‧‧Side grip

99‧‧‧ storage basket

111‧‧‧The first pivot

113‧‧‧Second pivot

151‧‧‧First riser

157‧‧‧ lug

351‧‧‧Cushion

Claims (10)

A collapsible vehicle, comprising: 　　 an upper rack including a main pipe and a first pivot portion and a second pivot portion formed on the main pipe and spaced apart from each other; 　　 a handlebar, pivotally connected to the upper rack, the first The pivot part is between the handlebar and the second pivot part; 　　 provides a seat adjustment assembly for riding, combined with the upper frame; 　　 a rotatable front wheel, pivotally combined with the handlebar; 　　 a chassis frame, including a pivot joint The arm, the chassis frame further includes a pivot portion spaced apart from the pivot arm, the pivot arm of the chassis frame is pivotally connected with the first pivot portion of the upper frame, the upper frame can pivot to a folded position or a position relative to the chassis frame Unfolded position; 　　 two rear wheels, rotatably combined with the chassis frame, the seat adjustment assembly is interposed between the front wheel and the two rear wheels; 　　 a driving device, pivotally connected to the pivot portion, the driving device further includes a movable A push rod, the end of the push rod is pivotally connected to the second pivot portion of the upper frame, and the movement of the push rod links the upper frame to pivot to the collapsed position or the expanded position; The distance between the front wheel and the two rear wheels when the upper shelf is in the folded position, and when the upper shelf is in the expanded position, the distance between the seat adjustment assembly and the chassis frame is less than the seat adjustment when the upper shelf is in the folded position The distance between the component and the chassis frame. The collapsible vehicle as described in item 1 of the patent application, wherein the upper frame further includes a positioning seat formed at one end, the positioning seat includes a support portion formed at the lower end, and the seat adjustment assembly is mounted on the positioning seat　　When the upper frame is in the unfolded position, the supporting portion abuts against the chassis frame, 　　When the upper frame is in the folded position, the supporting portion is separated from the chassis frame. A collapsible vehicle as described in item 2 of the patent application scope, wherein the positioning seat further includes a pivotal portion spaced from the support portion, and the seat adjustment assembly further includes a first riser, the first A riser includes a lug, the lug of the first riser is pivotally connected to the pivoting portion of the positioning seat, and the seat adjustment assembly can be pivoted relative to the positioning seat to a first position where seating can be provided or not A second position, when the upper rack is in the expanded position, the positioning adjustment device is in the first position, and when the upper rack is in the folded position, the positioning adjustment device is in the second position. The collapsible vehicle as described in item 3 of the patent application scope further includes: 　　 a bracket including a connecting frame, the connecting frame includes a groove and a positioning hole separated from the groove; 　　 a storage basket, Installed on the bracket; 　　 a first pivot, the pivoting portion further includes a pivot hole and a limiting hole spaced from the pivot hole, the first pivot and the groove of the connecting frame, the protrusion of the first riser The ear and the pivot hole of the positioning seat are pivotally connected, and the seat adjustment assembly and the bracket can be pivoted to the first position or the second position using the first pivot as the axis; 　　 a second pivot, which is detachably connected to the bracket The positioning hole and the limiting hole of the positioning seat are combined; 　　When the seat adjusting component and the bracket are at the first position and the second pivot is combined with the positioning hole and the limiting hole, the seat adjusting component and the bracket are not allowed to The first position is pivoted to the second position, when the seat adjustment assembly and the bracket are in the first position and the second pivot is separated from the positioning hole and the limiting hole, the seat adjustment assembly and the bracket are allowed to be moved by the first The position pivots to the second position. The collapsible vehicle as described in item 2 of the scope of the patent application further includes: 　　 a quick release assembly, the supporting part further includes a locking plate, the locking plate includes a slot, the quick release assembly and the supporting part Slotted combination, the chassis frame further includes a side bar, the quick release assembly can be operated in a released state or an engaged state; 　　When the upper frame is in the expanded position, the support portion abuts on the side bar, 　　 when the upper frame When it is in the folded position, the supporting part is separated from the side bar. 　　When the upper shelf is in the deployed position and the quick release assembly is in the engaged state, the upper shelf is not allowed to pivot from the deployed position to the folded position, 　　When the upper shelf is in the expanded position When the quick release assembly is operated in the released state, the upper rack is allowed to pivot from the deployed position to the folded position. The collapsible vehicle as described in item 5 of the patent application scope, wherein the side bar further includes a perforation; 　　when the upper rack is in the deployed position and the quick release assembly is in a tight state, the quick release assembly is fitted with the perforation, 　　when the upper rack is located In the unfolded position and the quick-release assembly operates in a released state, the quick-release assembly is separated from the perforation. A collapsible vehicle as described in item 1 of the patent application, wherein the seat adjustment assembly is interposed between the second pivot portion and the two rear wheels, the chassis frame includes a side lever, and the pivot arm Formed at one end of the side bar, the chassis frame further includes a rear wheel shaft formed at the other end of the side bar, the two rear wheels are rotatably coupled to both ends of the rear wheel shaft, and the pivot portion is formed at the rear wheel shaft on. A collapsible vehicle that can be ridden. The vehicle includes: 　　 a shelf including a main pipe and a first pivot portion and a second pivot portion formed on the main pipe and spaced apart from each other; 　　 provides a ride Seat adjustment assembly, combined with the upper frame; 　　 A chassis frame, including a pivot arm, the chassis frame further includes a pivot portion spaced from the pivot arm, the pivot arm of the chassis frame is pivotally connected with the first pivot portion of the upper frame , The upper frame can be pivoted relative to the chassis frame to a collapsed position or an expanded position; 　　 a driving device pivotally connected to the pivot portion, the driving device further includes a movable push rod, the end of the push rod is The second pivot portion is pivotally connected, and the push rod movement is linked to the upper frame pivoting to the folded position or the expanded position; 　　 When the upper frame is in the expanded position, the distance between the seat adjustment assembly and the chassis frame is less than when the upper frame is in the folded position Adjust the distance between the components and the chassis frame. The collapsible vehicle as described in item 8 of the patent application scope, wherein the upper frame further includes a positioning seat formed at one end, the positioning seat includes a support portion formed at a lower end, and the seat adjustment assembly is mounted on the positioning seat　　When the upper frame is in the unfolded position, the supporting portion abuts against the chassis frame, 　　When the upper frame is in the folded position, the supporting portion is separated from the chassis frame. A collapsible vehicle as described in item 9 of the patent application scope, wherein the positioning seat further includes a pivotal portion spaced from the support portion, and the seat adjustment assembly further includes a first riser, the first A riser includes a lug, the lug of the first riser is pivotally connected to the pivoting portion of the positioning seat, and the seat adjustment assembly can be pivoted relative to the positioning seat to a first position where seating can be provided or not A second position, when the upper rack is in the expanded position, the positioning adjustment device is in the first position, and when the upper rack is in the folded position, the positioning adjustment device is in the second position.

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