Carrying cart and folding mechanism and wheel mechanism thereof

Abstract

The utility model provides a carrier loader and a folding mechanism and a wheel mechanism thereof, a frame comprises rear feet and a handlebar, the folding mechanism comprises a handlebar fixing rod, the handlebar fixing rod is pivoted to the rear feet, the handlebar is connected with the handlebar fixing rod to enable the handlebar and the handlebar fixing rod to synchronously pivot, and the folding mechanism comprises a folding mechanism and a wheel mechanism, the handlebar fixing rod is provided with a fixing rod locking piece, the fixing rod locking piece can move between a locking position and an unlocking position, and when the fixing rod locking piece moves to the locking position, the fixing rod locking piece is locked on the rear foot so as to prevent the handlebar fixing rod from pivoting relative to the rear foot; when the fixing rod locking piece moves to the unlocking position, the fixing rod locking piece is unlocked relative to the rear foot, so that the handlebar fixing rod is allowed to pivot relative to the rear foot. The carrier loader is convenient to fold and small in size after being folded.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a carrier, more particularly, to a folding mechanism and a wheel mechanism of a frame of the carrier. BACKGROUND

[0002] At present, the use of carriers such as strollers or trailers is increasingly popular, which can be used to carry people, animals or articles, including but not limited to child strollers, animal or article carrying devices, etc. The carrier is convenient for users to take children out or carry various articles, but the structure of the common carrier is complex, the model is large, and it is very heavy, which is determined by the frame structure of the carrier itself. Therefore, a carrier which is convenient to fold and has a small volume after folding is needed to facilitate users to carry out. SUMMARY

[0003] The purpose of the present disclosure is to provide a carrier and its folding mechanism, canopy device, handle mechanism and wheel mechanism, wherein the carrier is convenient to fold and has a small volume after folding.

[0004] As embodied and broadly described herein, in order to achieve these and other advantages and in accordance with the purpose of the present disclosure, a folding mechanism of a frame of a carrier is provided, wherein the frame comprises a rear leg and a handle, the folding mechanism comprises a handle fixing rod, the handle fixing rod is pivoted to the rear leg, the handle is connected to the handle fixing rod so that the handle can be pivoted synchronously with the handle fixing rod, wherein the handle fixing rod is provided with a fixing rod locking member, the fixing rod locking member can be moved between a locking position and a release position, when the fixing rod locking member is moved to the locking position, the fixing rod locking member is locked on the rear leg to prevent the handle fixing rod from being pivoted relative to the rear leg; when the fixing rod locking member is moved to the release position, the fixing rod locking member is released relative to the rear leg to allow the handle fixing rod to be pivoted relative to the rear leg.

[0005] In an embodiment, the fixing rod locking member is located in the handle fixing rod and can be moved along the handle fixing rod between the locking position and the release position, the rear leg is provided with a rear leg locking hole at the position where the handle fixing rod is pivoted, when the fixing rod locking member is moved to the locking position, the fixing rod locking member is inserted into the rear leg locking hole; when the fixing rod locking member is moved to the release position, the fixing rod locking member is withdrawn from the rear leg locking hole.

[0006] In an embodiment, the folding mechanism further comprises a handle sliding sleeve which can be moved along the handle, the handle sliding sleeve can drive the fixing rod locking member to move to the release position via a sliding sleeve transmission assembly.

[0007] In an embodiment, the sliding sleeve driving assembly comprises a driver arranged to be movable along the handle, a handle pulling member, a first end of the handle pulling member being connected to the handle sliding sleeve, a second end of the handle pulling member being connected to the driver, such that the movement of the handle sliding sleeve can drive the driver to move from an initial position to a driving position; wherein the driver is provided with a driver pushing part, the driver pushing part interacting with a locking member pushing pin arranged on the fixed rod locking member, such that the driver can drive the fixed rod locking member to move to the release position.

[0008] In an embodiment, the handle is provided with a driver long slot extending along the length direction of the handle, a driver fixing pin is arranged to pass through the driver and the driver long slot, and the second end of the handle pulling member is connected to the driver fixing pin.

[0009] In an embodiment, the folding mechanism comprises a driver resetting device arranged to tend to move the driver to the initial position.

[0010] In another aspect, the present disclosure provides a canopy device of a frame of a carrying vehicle, wherein the canopy device comprises a canopy rod for supporting a canopy, the canopy rod comprising a movable canopy rod and a horizontally arranged fixed canopy rod, a canopy mounting seat, one side of the canopy mounting seat being provided with a rod clamping slot, an end of the fixed canopy rod being fixed in the rod clamping slot, an end of the movable canopy rod being pivotally connected to the other side of the canopy mounting seat, and the canopy mounting seat being detachably fixed to the frame.

[0011] In an embodiment, the canopy mounting seat is provided with a canopy engaging part, and the frame is provided with a frame engaging part, the canopy engaging part and the frame engaging part being capable of engaging with each other.

[0012] In an embodiment, the canopy engaging part and the frame engaging part are profiled grooves matched with each other.

[0013] In an embodiment, the canopy engaging part is provided with a canopy elastic part capable of applying a pressing force to the frame engaging part.

[0014] In an embodiment, one of the canopy elastic part and the frame engaging part is provided with an engaging recess, and the other is provided with an engaging protrusion capable of engaging with the engaging recess.

[0015] In yet another aspect, the present disclosure provides a handle mechanism of a frame of a carrier vehicle, wherein the frame comprises a rear leg and a handle, the handle mechanism comprising a handle fixing rod, the handle fixing rod being pivotally connected to the rear leg, wherein the handle is connected to the handle fixing rod such that the handle is pivotable synchronously with the handle fixing rod or the handle is pivotable relative to the handle fixing rod.

[0016] In an embodiment, the handle is provided with a handle fixing member, the handle fixing member being movable along the handle between an engaged position and a disengaged position, when the handle fixing member is moved to the engaged position, a handle locking portion of the handle fixing member is capable of engaging a free end of the handle fixing rod such that the handle is pivotable synchronously with the handle fixing rod, when the handle fixing member is moved to the disengaged position, the handle locking portion of the handle fixing member is disengaged from the free end of the handle fixing rod such that the handle is pivotable relative to the handle fixing rod.

[0017] In an embodiment, the handle is provided with a fixing member long slot extending along a length direction of the handle, a fixing member connecting pin is arranged to pass through the handle fixing member and the fixing member long slot, and wherein the handle mechanism comprises a fixing member resetting device, the fixing member resetting device being arranged to tend to move the handle fixing member to the engaged position.

[0018] In an embodiment, the rear leg is provided with a rear leg connecting seat for the handle to be pivotally connected thereto, the rear leg connecting seat is provided with a handle pivot limiting portion for limiting a pivot angle of the handle.

[0019] In another aspect, the present disclosure provides a wheel mechanism of a frame of a carrier vehicle, wherein the frame comprises a front leg, a rear leg and a wheel, the wheel mechanism comprising: a wheel seat, the wheel seat being steeringly connected to the front leg or the rear leg, the wheel being connected to the wheel seat and being capable of steering synchronously with the wheel seat, the wheel seat being provided with a wheel steering positioning member, the front leg and / or the rear leg corresponding to the wheel seat being provided with at least two wheel steering positioning holes, wherein the wheel steering positioning member is operable to move between a directional position and a non-directional position, when the wheel steering positioning member is moved to the directional position, the wheel steering positioning member is capable of being inserted into one of the wheel steering positioning holes to orient the wheel, when the wheel steering positioning member is moved to the non-directional position, the wheel steering positioning member is out of the wheel steering positioning hole to allow the wheel to steer.

[0020] In an embodiment, the wheel mechanism comprises a directional member receiving seat movably arranged on the wheel seat, and the wheel steering directional member is arranged on the directional member receiving seat and moves with the directional member receiving seat.

[0021] In an embodiment, the wheel mechanism comprises a wheel directional operation member arranged to be operated to drive the directional member receiving seat to move.

[0022] In an embodiment, the frame comprises at least one of a front bottom tube pivoted to the front leg and a rear bottom tube pivoted to the rear leg, wherein the front bottom tube and / or the rear bottom tube is arranged to pivot and drive the wheel steering directional member to move to the non-directional position during the folding of the frame.

[0023] In an embodiment, a first end of the front bottom tube is pivoted to the front leg, a first end of the rear bottom tube is pivoted to the rear leg, at least one of the first end of the front bottom tube and the first end of the rear bottom tube is provided with a bottom tube driving part, the front leg and / or the rear leg is provided with a bottom tube transmission assembly, and the bottom tube driving part is capable of driving the wheel steering directional member to move to the non-directional position via the bottom tube transmission assembly through the pivoting of the front bottom tube and / or the rear bottom tube.

[0024] In an embodiment, the bottom tube transmission assembly is arranged in the wheel seat and comprises a first transmission member abutting against the bottom tube driving part and a second transmission member abutting against the wheel steering directional member, the first transmission member abuts against the second transmission member, so that the force of the bottom tube driving part is transmitted to the wheel steering directional member via the first transmission member and the second transmission member.

[0025] In an embodiment, a first end of the front bottom tube is pivoted to the front leg, a first end of the rear bottom tube is pivoted to the rear leg, at least one of the first end of the front bottom tube and the first end of the rear bottom tube is provided with a bottom tube pushing part, the wheel seat is provided with a wheel seat driven part, and the bottom tube pushing part is capable of pushing the wheel seat driven part to drive the wheel seat to steer to the folding orientation through the pivoting of the front bottom tube and / or the rear bottom tube during the folding of the frame.

[0026] In yet another aspect, the present disclosure provides a vehicle, a frame of the vehicle comprising: a frame base, a front leg comprising a front leg upper portion and a front leg lower portion pivotally connected to each other via a front leg pivot axis, a rear leg comprising a rear leg upper portion and a rear leg lower portion pivotally connected to each other via a rear leg pivot axis, the rear leg upper portion and the front leg upper portion being pivotally connectable to the frame base via a first frame pivot axis, a front bottom tube pivotally connected to the front leg lower portion via a front bottom tube pivot axis and to the frame base via a second frame pivot axis, a rear bottom tube pivotally connected to the rear leg lower portion via a rear bottom tube pivot axis and to the frame base via a third frame pivot axis, wherein a sequential connection of the first frame pivot axis, the rear leg pivot axis, the rear bottom tube pivot axis and the third frame pivot axis can form a first polygon, and a sequential connection of the first frame pivot axis, the front leg pivot axis, the front bottom tube pivot axis and the second frame pivot axis can form a second polygon.

[0027] In an embodiment, the frame of the vehicle further comprises: a frame slider movably arranged on the frame base in a vertical direction, a first connecting member pivotally connected to the rear leg upper portion via a first connecting member pivot axis, a second connecting member pivotally connected to the front leg upper portion via a second connecting member pivot axis, the second connecting member and the first connecting member being pivotally connectable to the frame slider via a slider pivot axis, wherein a sequential connection of the first frame pivot axis, the first connecting member pivot axis, the slider pivot axis and the second connecting member pivot axis can form a third polygon.

[0028] In an embodiment, the frame of the vehicle further comprises: a handgrip pivotally connected to the rear leg upper portion via a handgrip pivot axis, a support member pivotally connected to the handgrip via a support member pivot axis and to the frame base via the second frame pivot axis, wherein a sequential connection of the first frame pivot axis, the second frame pivot axis, the support member pivot axis and the handgrip pivot axis can form a fourth polygon.

[0029] In an embodiment, the frame of the vehicle further comprises: a folding mechanism as described above, and / or a canopy device, and / or a handgrip mechanism, and / or a wheel mechanism.

[0030] In another aspect, the present disclosure provides a vehicle, a frame of the vehicle comprising: a folding mechanism as described above, and / or a canopy device, and / or a handgrip mechanism, and / or a wheel mechanism.

[0031] The present disclosure has the advantage that the vehicle according to the present disclosure is easy to fold and has a small volume after folding.

[0032] The foregoing and other objects, features, aspects and advantages of the present disclosure will become more apparent from the following detailed description of the present disclosure when taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0033] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and serve to explain the principles of the present disclosure.

[0034] In the drawings:

[0035] FIG. 1 is a perspective view of a vehicle frame of a vehicle according to the present disclosure in an unfolded state.

[0036] FIG. 2 is a side view of a vehicle frame of a vehicle according to the present disclosure in a folded state.

[0037] FIG. 3 is a perspective view of a vehicle frame of a vehicle according to the present disclosure in a folded state.

[0038] FIG. 4 is a side view of a vehicle frame of a vehicle according to the present disclosure in an unfolded state, wherein a movable roof bar 511 of a roof arrangement is in a vertical position.

[0039] FIG. 5 is a side view of a vehicle frame of a vehicle according to the present disclosure in an unfolded state, wherein a movable roof bar 511 of a roof arrangement is in a horizontal position.

[0040] FIG. 6 is a perspective view of a vehicle frame provided with a folding mechanism according to the present disclosure.

[0041] FIG. 7A is another perspective view of a vehicle frame provided with a folding mechanism according to the present disclosure.

[0042] FIG. 7B is a partial enlarged view of FIG. 7A

[0043] FIG. 8A is a partial exploded view of the vehicle frame shown in FIG. 7A

[0044] FIG. 8B is a partial enlarged view of FIG. 8A

[0045] FIG. 9 is a perspective view of a vehicle frame provided with a folding mechanism according to the present disclosure, partially sectioned and an enlarged view of the sectioned part.

[0046] FIG. 10 ​​​is a perspective view of another part of a frame provided with a folding mechanism according to the present disclosure, with the part being cut away, and an enlarged view of the cut-away part.

[0047] FIG. 11 is a perspective view of yet another part of a frame provided with a folding mechanism according to the present disclosure, with the part being cut away, and an enlarged view of the cut-away part, wherein the fixed rod locking member is in the locked position.

[0048] FIG. 12 is a perspective view of yet another part of a frame provided with a folding mechanism according to the present disclosure, with the part being cut away, and an enlarged view of the cut-away part, wherein the fixed rod locking member is in the unlocked position.

[0049] FIG. 13 is a perspective view of a part of a vehicle provided with a folding mechanism according to the present disclosure, with the part being cut away.

[0050] FIG. 14 is a side view of a frame of a vehicle according to the present disclosure in an unfolded state, wherein the individual component members of the frame and their pivot axes are shown.

[0051] FIG. 15 is a side view of a frame of a vehicle according to the present disclosure in a folding state, wherein the individual component members of the frame and their pivot axes are shown.

[0052] FIG. 16 is a side view of a frame of a vehicle according to the present disclosure in a further folding state, wherein the individual component members of the frame and their pivot axes are shown.

[0053] FIG. 17 is a perspective view of a frame of a vehicle according to the present disclosure in an unfolded state, wherein the frame slider in the base channel is shown.

[0054] FIG. 18 is a perspective view of a roof arrangement according to the present disclosure and an enlarged view of a part thereof.

[0055] FIG. 19 is a perspective view of a frame of a vehicle provided with a roof arrangement according to the present disclosure, wherein an enlarged view of the connection of the roof arrangement to the frame is shown.

[0056] FIG. 20 is a side view of a frame of a vehicle provided with a vehicle mechanism according to the present disclosure, wherein the vehicle is shown in a push mode.

[0057] FIG. 21 is a side view of a frame of a vehicle provided with a vehicle mechanism according to the present disclosure, wherein the vehicle is shown in a tow mode.

[0058] FIG. 22 is a perspective view of a frame of a vehicle provided with a vehicle mechanism according to the present disclosure, wherein the vehicle lock portion of the vehicle fixing member engages the free end of the vehicle fixing rod.

[0059] FIG. 23 is a perspective view of a frame provided with a rider mechanism according to the present disclosure, wherein the rider lock portion of the rider fixture is disengaged from the free end of the rider fixation rod.

[0060] FIG. 24 is another perspective view of a frame provided with a rider mechanism according to the present disclosure, wherein the rider lock portion of the rider fixture is engaged with the free end of the rider fixation rod.

[0061] FIG. 25A is a partially exploded perspective view of a frame provided with a rider mechanism according to the present disclosure.

[0062] FIG. 25B is a partial enlarged view of FIG. 25A

[0063] FIG. 26A is a perspective view of a frame provided with a rider mechanism according to the present disclosure, partially sectioned.

[0064] FIG. 26B is a partial enlarged view of FIG. 26A

[0065] FIG. 27A is an exploded perspective view of a frame provided with a rider mechanism according to the present disclosure, partially sectioned.

[0066] FIG. 27B is a partial enlarged view of FIG. 27A

[0067] FIG. 28 is a perspective view of a frame provided with a rider mechanism according to the present disclosure, in an unfolded state.

[0068] FIG. 29 is a side view of a frame provided with a rider mechanism according to the present disclosure, in a folded state.

[0069] FIG. 30 is a perspective view of a frame provided with a rider mechanism according to the present disclosure, in a folded state.

[0070] FIG. 31 is a perspective view of the frame shown in FIG. 28

[0071] is a side view of the frame shown in FIG. 32 FIG. 31 is a side view of the frame shown in

[0072] FIG. 33 FIG. 31 is a side view of the frame shown in being folded, wherein both wheels are in an unfolded orientation.​​​​

[0073] FIG. 34 is FIG. 31 a side view of the frame further collapsed, with one wheel in the expanded orientation and one wheel in the collapsed orientation.

[0074] FIG. 35 is FIG. 31 a side view of the frame in the collapsed state, with both wheels in the collapsed orientation.

[0075] FIG. 36 is a perspective view of a partial component of a frame provided with a wheel mechanism according to the present disclosure.

[0076] FIG. 37 is a partial exploded perspective view of a wheel seat connecting a wheel of a wheel mechanism according to the present disclosure.

[0077] FIG. 38 is a perspective view of a wheel operating knob of a wheel mechanism according to the present disclosure.

[0078] FIG. 39 is a partial exploded perspective view of a wheel seat connecting a wheel of a wheel mechanism according to the present disclosure, with the wheel seat connecting housing removed.

[0079] FIG. 40 is a partial sectional view of a wheel seat connecting a wheel of a wheel mechanism according to the present disclosure.

[0080] FIG. 41 is a perspective view of a wheel seat connecting a wheel of a wheel mechanism according to the present disclosure, with a wheel steering positioning member in a non-orientation position.

[0081] FIG. 42 is a perspective view of a wheel seat connecting a wheel of a wheel mechanism according to the present disclosure, with a wheel steering positioning member in an orientation position.

[0082] FIG. 43 is a lateral sectional view of a wheel seat connecting a wheel of a wheel mechanism according to the present disclosure, with a wheel steering positioning member in a non-orientation position.

[0083] FIG. 44 is a lateral sectional view of a wheel seat connecting a wheel of a wheel mechanism according to the present disclosure, with a wheel steering positioning member in an orientation position.

[0084] FIG. 45A is a perspective view of a frame provided with a wheel mechanism according to the present disclosure, with a bottom tube driving portion in abutment with a first transmission member.

[0085] FIG. 45B is FIG. 45A a partial enlarged view.

[0086] FIG. 46A is a partial exploded perspective view of the frame shown in FIG. 45A

[0087] FIG. 46B is a partial enlarged view of FIG. 46A where the wheel steering positioner is in an oriented position.

[0088] FIG. 47A is a perspective view of a frame provided with a wheel mechanism according to the present disclosure, where the bottom tube drive portion pushes the first transmission member.

[0089] FIG. 47B is a partial enlarged view of FIG. 47A

[0090] FIG. 48A is a partial exploded perspective view of the frame shown in FIG. 47A

[0091] FIG. 48B is a partial enlarged view of FIG. 48A where the wheel steering positioner is in a non-oriented position.

[0092] FIG. 49A is a partial exploded perspective view of the frame shown in FIG. 47A from another angle, where the lower part of the front legs is removed.

[0093] FIG. 49B is a partial enlarged view of FIG. 49A where the wheel steering positioner is in a non-oriented position.

[0094] FIG. 50 is a perspective view of a first transmission member of a wheel mechanism according to the present disclosure.

[0095] FIG. 51 is a perspective view of a second transmission member of a wheel mechanism according to the present disclosure.

[0096] FIG. 52A is a perspective view of a frame provided with a wheel mechanism according to the present disclosure, where the bottom tube drive portion is ready to push the wheel seat driven portion.

[0097] FIG. 52B is a partial enlarged view of FIG. 52A

[0098] FIG. 53A is a perspective view of a frame provided with a wheel mechanism according to the present disclosure, where the bottom tube drive portion pushes the wheel seat driven portion.

[0099] FIG. 53B is a partial enlarged view of FIG. 53A ​​​​​

[0100] List of Reference Signs

[0101] 1 frame

[0102] 11 frame joint

[0103] 11A joint protrusion

[0104] 12 frame base

[0105] 12A base sliding slot

[0106] 13 frame sliding block

[0107] 100 rear leg

[0108] 101 rear leg upper portion

[0109] 102 rear leg lower portion

[0110] 110 rear leg locking hole

[0111] 120 rear leg connecting seat

[0112] 121 handlebar pivot limiting portion

[0113] 200 front leg

[0114] 201 front leg upper portion

[0115] 202 front leg lower portion

[0116] 300 handlebar

[0117] 301 pivot end

[0118] 301A pivot limiting portion

[0119] 310 handlebar sliding sleeve

[0120] 311 sliding sleeve long slot

[0121] 312 sliding sleeve fixing pin

[0122] 320 handlebar driving member

[0123] 321 driving member pushing portion

[0124] 322 driving member long slot

[0125] 323 driving member fixing pin

[0126] 324 driving member reset device

[0127] 330 handlebar pulling member

[0128] 331 first end

[0129] 332 Second End

[0130] 340 Driver's Fixture

[0131] 341 Driver Lock-On

[0132] 341A Fixture Receiving Section

[0133] 342 Fastener Long Slot

[0134] 343 Fastener connecting pin

[0135] 344 Fixture Reset Device

[0136] 345 Fastener release part

[0137] 350 rider pivot

[0138] 400 rider locking bar

[0139] 410 Fixing rod locking component

[0140] 411 Locking component top promotion

[0141] 412 Locking component reset device

[0142] 420 Free End

[0143] 500 canopy assembly

[0144] 510 Canopy Rod

[0145] 511 Movable Canopy Pole

[0146] 512 Fixed canopy rod

[0147] 520 Canopy Mounting Mount

[0148] 521 Roof Joint

[0149] 522 Roof Elastic Section

[0150] 522A engagement recess

[0151] 523 Rod Slot

[0152] 530 Canopy

[0153] 600 wheels

[0154] 610 Wheel seat

[0155] 611 Wheel Steering Alignment

[0156] 612 Orientation component housing

[0157] 612A Receiving Seat Drive Inclined Slot

[0158] 612B housing reset device

[0159] 613 wheel housing connecting shell

[0160] 614 wheel housing mounting hole

[0161] 620 wheel steering positioning hole

[0162] 630 wheel operation knob, wheel orientation operation member

[0163] 631 knob driving inclined rib

[0164] 632 inclined rib limiting portion

[0165] 633 knob operation protrusion

[0166] 640 wheel housing mounting shaft

[0167] 650 wheel housing cover

[0168] 651 first cover hole

[0169] 652 second cover hole

[0170] 653 wheel housing driven portion

[0171] 660 wheel housing locking member

[0172] 661 wheel housing reset device

[0173] 701 bottom pipe driving portion

[0174] 702 first transmission member

[0175] 703 second transmission member

[0176] 703B second transmission member reset device

[0177] 704 bottom pipe pushing portion

[0178] 710 front bottom pipe

[0179] 711 first end

[0180] 720 rear bottom pipe

[0181] 721 first end

[0182] 730 first connecting member

[0183] 740 second connecting member

[0184] 750 support member

[0185] S1 front leg pivot shaft

[0186] S2 rear leg pivot axis

[0187] S3 first frame pivot axis

[0188] S4 front bottom tube pivot axis

[0189] S5 second frame pivot axis

[0190] S6 rear bottom tube pivot axis

[0191] S7 third frame pivot axis

[0192] S8 first connecting member pivot axis

[0193] S9 second connecting member pivot axis

[0194] S10 slider pivot axis

[0195] S11 handle pivot axis

[0196] S12 support member pivot axis DETAILED DESCRIPTION

[0197] Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings. Although the present disclosure is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the disclosure is not intended to be limited to the particular embodiments described herein, but rather is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the embodiments.

[0198] Generally, the frame 1 of the carrier vehicle can include rear legs 100 and front legs 200 to which wheels 600 are respectively connected, and a handle 300 connected to the rear legs 100, wherein the handle 300 can be used by a user to push or pull the carrier vehicle to move.

[0199] For the purpose of convenient description, as shown in the drawings, the frame 1 of the carrier vehicle is taken as an example having four wheels 600. However, the present disclosure is also applicable to a carrier vehicle having two, three, or more than four wheels 600. FIGS. 1-6 Meanwhile, the direction in which the frame 1 is pushed (i.e., the left direction in the drawings) is defined as the front, the direction in which the frame 1 is pulled (i.e., the right direction in the drawings) is defined as the rear, and the left-right direction perpendicular to the front-rear direction is defined as the lateral direction. Since the frame 1 is left-right symmetrical in the lateral direction, for the sake of clarity, hereinafter, the structure of the lateral side of the frame 1 will be mainly described.

[0200] FIG. 4 FIG. 4

[0201] Folding mechanism of the frame

[0202] ​​​In order to enable the stroller to be folded for portability, the handle 300 can be designed to be pivotally connected to the rear legs 100, and to be locked against pivoting relative to the rear legs 100 when the frame 1 is in the unfolded state, so that the user pushes the stroller by the handle 300; and to be unlocked to be able to pivot relative to the rear legs 100 when the frame 1 is to be folded, so that the frame 1 can be folded. In addition, in order to be more convenient for use, when the frame 1 is in the unfolded state, the user can also need the handle 300 to be unlocked to be able to pivot relative to the handle fixing rod 400, so that the handle 300 is switched from the push mode (as shown in FIG. 20 ) to the tow mode (as shown in FIG. 21 , which will be described in detail later).

[0203] The folding mechanism of the frame 1 of the stroller according to the present disclosure can well meet the above requirements.

[0204] FIGS. 1-13 An embodiment of the folding mechanism of the frame 1 of the stroller according to the present disclosure is shown.

[0205] The frame 1 can include the rear legs 100 and the handle 300, and the folding mechanism includes the handle fixing rod 400 pivotally connected to the rear legs 100, and the handle 300 connected to the handle fixing rod 400 in such a way that the handle 300 can pivot synchronously with the handle fixing rod 400 when the frame 1 is folded.

[0206] In the present disclosure, the handle 300 and the handle fixing rod 400 "pivot synchronously" means that they are fixedly arranged side by side relative to each other, and the handle 300 can pivot following the handle fixing rod 400. In the embodiment as shown in FIGS. 20-25B , the handle 300 and the handle fixing rod 400 can pivot around the same handle pivot axis S11. In other embodiments, the pivot axis of the handle 300 can be arranged on the handle fixing rod 400 and offset from the pivot axis of the handle fixing rod 400.

[0207] By arranging the handle fixing rod 400, and the handle 300 can pivot synchronously or asynchronously with the handle fixing rod 400, the handle 300 can be switched between various working states relative to the rear legs 100.

[0208] For example, when the handle 300 pivots synchronously with the handle fixing rod 400, if the handle fixing rod 400 is locked against pivoting relative to the rear legs 100, the handle 300 is also locked against pivoting relative to the rear legs 100 and remains in the push mode (as shown in FIG. 1position (as shown in Fig. 3B), which facilitates the user to fold the frame 1 by the handle 300. FIG. 2 and FIG. 3 position (as shown in Fig. 3B), which facilitates the user to fold the frame 1 by the handle 300.

[0209] When the handle 300 is no longer pivoted synchronously with the handle fixed bar 400, the handle 300 can be pivoted relative to the rear leg 100 to an angle position suitable for towing the trailer (as shown in Fig. 3C), even if the handle fixed bar 400 is locked relative to the rear leg 100 and cannot be pivoted, which facilitates the user to tow the trailer by the handle 300. FIG. 21 When the handle 300 is no longer pivoted synchronously with the handle fixed bar 400, the handle 300 can be pivoted relative to the rear leg 100 to an angle position suitable for towing the trailer (as shown in Fig. 3C), even if the handle fixed bar 400 is locked relative to the rear leg 100 and cannot be pivoted, which facilitates the user to tow the trailer by the handle 300.

[0210] In order to enable the pivoting of the handle fixed bar 400 relative to the rear leg 100 to be locked or unlocked, the handle fixed bar 400 is provided with a fixed bar locking member 410, which is movable between a locking position and an unlocking position, as shown in FIG. 11 and FIG. 12 In order to enable the pivoting of the handle fixed bar 400 relative to the rear leg 100 to be locked or unlocked, the handle fixed bar 400 is provided with a fixed bar locking member 410, which is movable between a locking position and an unlocking position, as shown in

[0211] When the fixed bar locking member 410 is moved to the locking position, the fixed bar locking member 410 is locked on the rear leg 100 to prevent the handle fixed bar 400 from pivoting relative to the rear leg 100, as shown in FIG. 11 In one embodiment, the fixed bar locking member 410 can be arranged such that the fixed bar locking member 410 can be moved to the locking position only when the handle fixed bar 400 is pivoted relative to the rear leg 100 to an angle position such that the frame 1 is in the unfolded state, so as to keep the frame 1 in the unfolded state.

[0212] In another embodiment, the fixed bar locking member 410 can be arranged such that the fixed bar locking member 410 can be moved to the locking position when the handle fixed bar 400 is pivoted relative to the rear leg 100 to another angle position such that the frame 1 is not in the unfolded state (e.g. the frame 1 is in the folded state), so as to keep the frame 1 in a different use state (e.g. the folded state).

[0213] When the fixed bar locking member 410 is moved to the unlocking position, the fixed bar locking member 410 is unlocked relative to the rear leg 100 to allow the handle fixed bar 400 to pivot relative to the rear leg 100, so that the frame 1 can change the use state (e.g. to the folded state), as shown in

[0214] FIG. 12 When the fixed bar locking member 410 is moved to the unlocking position, the fixed bar locking member 410 is unlocked relative to the rear leg 100 to allow the handle fixed bar 400 to pivot relative to the rear leg 100, so that the frame 1 can change the use state (e.g. to the folded state), as shown in

[0215] In FIG. 11 and FIG. 12 ​In the embodiment shown, the fixed rod locking member 410 located in the rider fixed rod 400 is movable along the rider fixed rod 400 between a locking position and a releasing position. A rear leg locking hole 110 is provided at the portion of the rear leg 100 where the rider fixed rod 400 is pivoted. When the fixed rod locking member 410 is moved to the locking position and inserted into the rear leg locking hole 110, the fixed rod locking member 410 is locked on the rear leg 100. When the fixed rod locking member 410 is moved to the releasing position and withdrawn from the rear leg locking hole 110, the fixed rod locking member 410 is released relative to the rear leg 100.

[0216] In other embodiments, the fixed rod locking member 410 according to the present disclosure can also be locked and released relative to the rear leg 100 in other ways. For example, the fixed rod locking member 410 can be arranged to extend out of or retract into the pivoting end of the rider fixed rod 400 in a direction perpendicular to the length direction of the rider fixed rod 400 (i.e. the direction in which the rider fixed rod 400 extends). When the fixed rod locking member 410 extends out of the pivoting end of the rider fixed rod 400, it can abut against the outer wall of the rear leg 100, so that the rider fixed rod 400 is locked relative to the rear leg 100 and cannot pivot. When the fixed rod locking member 410 retracts into the pivoting end of the rider fixed rod 400, the rider fixed rod 400 is released relative to the rear leg 100 and can pivot.

[0217] To ensure that the fixed rod locking member 410 does not release accidentally after being locked on the rear leg 100, as shown in FIG. 11 and FIG. 12 The folding mechanism according to the present disclosure can also include a locking member resetting device 412 arranged to tend to move the fixed rod locking member 410 to the locking position.

[0218] The locking member resetting device 412 can be a spring, a gas pressure rod or a hydraulic rod, etc.

[0219] When the user is ready to fold the bicycle frame 1, the rider fixed rod 400 needs to be released relative to the rear leg 100 so as to be able to pivot. To facilitate the user's operation, the folding mechanism according to the present disclosure can also include a releasing operation part provided on the bicycle frame 1, which can be operated to drive the fixed rod locking member 410 to move to the releasing position.

[0220] In the embodiment shown in FIGS. 1-13 , the releasing operation part is a rider sleeve 310 that can move along the rider 300. The rider sleeve 310 is arranged on the rider 300, so that the user can easily perform the releasing operation without having to bend down.

[0221] The rider sleeve 310 can be a sleeve that is sleeved on the rider 300, or can be other structures having a groove that engages with the rider 300.

[0222] Since the rider sleeve 310 is spaced apart from the fixed bar locking member 410 at the pivot end of the rider fixed bar 400, the rider sleeve 310 needs to indirectly drive the fixed bar locking member 410 to move to the unlocking position via a sleeve driving assembly.

[0223] In the embodiment shown, the sleeve driving assembly can include a rider driving member 320 and a rider pulling member 330. FIGS. 7A-10

[0224] The rider driving member 320 is arranged to be movable along the rider 300. The rider driving member 320 can be in the form of a sleeve that is sleeved on the rider 300, or in other forms having grooves that are engaged with the rider 300.

[0225] As shown in Figs. 1 and 2, the first end 331 of the rider pulling member 330 is connected to the rider sleeve 310, and the second end 332 is connected to the rider driving member 320, so that the movement of the rider sleeve 310 can drive the rider driving member 320 to move from the initial position to the driving position. FIG. 9 FIG. 10 The rider pulling member 330 can be in the form of a flexible pulling wire such as a steel wire, or in the form of a rigid pulling rod.

[0226] As shown in Figs. 1 and 2, the rider driving member 320 is provided with a driving member pushing portion 321 that interacts with a locking member pushing pin 411 arranged on the fixed bar locking member 410, so that the rider driving member 320 can drive the fixed bar locking member 410 to move to the unlocking position.

[0227] In an embodiment, the driving member pushing portion 321 can be arranged on the side of the rider driving member 320 that faces the rider fixed bar 400, so as to interact with the locking member pushing pin 411. The locking member pushing pin 411 can be formed integrally with the fixed bar locking member 410 or separately formed and connected to the fixed bar locking member 410. In the case where the fixed bar locking member 410 is located in the rider fixed bar 400, the locking member pushing pin 411 arranged on the fixed bar locking member 410 can be exposed outside by penetrating through the wall of the rider fixed bar 400. FIG. 8B FIG. 13 In order to control the stroke of the movement of the rider sleeve 310 along the rider 300, as shown in Figs. 1 and 2, a sleeve long slot 311 extending along the length direction of the rider 300 is arranged on the rider 300, and a sleeve fixing pin 312 is arranged to penetrate through the rider sleeve 310 and the sleeve long slot 311. Thus, the stroke of the movement of the sleeve fixing pin 312 in the sleeve long slot 311 is the stroke of the movement of the rider sleeve 310 along the rider 300.

[0228] In an embodiment, the driving member pushing portion 321 can be arranged on the side of the rider driving member 320 that faces the rider fixed bar 400, so as to interact with the locking member pushing pin 411. The locking member pushing pin 411 can be formed integrally with the fixed bar locking member 410 or separately formed and connected to the fixed bar locking member 410. In the case where the fixed bar locking member 410 is located in the rider fixed bar 400, the locking member pushing pin 411 arranged on the fixed bar locking member 410 can be exposed outside by penetrating through the wall of the rider fixed bar 400.

[0229] In order to control the stroke of the movement of the rider sleeve 310 along the rider 300, as shown in Figs. 1 and 2, a sleeve long slot 311 extending along the length direction of the rider 300 is arranged on the rider 300, and a sleeve fixing pin 312 is arranged to penetrate through the rider sleeve 310 and the sleeve long slot 311. Thus, the stroke of the movement of the sleeve fixing pin 312 in the sleeve long slot 311 is the stroke of the movement of the rider sleeve 310 along the rider 300. FIG. 9

[0230] ​​​​It should be noted that the entire rider 300 shown in the attached figure is U-shaped, and the "length direction of the rider 300" mentioned in this article refers to the extension direction of the straight part of the rider 300 that is perpendicular to the lateral direction.

[0231] like FIG. 9 As shown, the first end 331 of the rider traction member 330 can be connected to the sliding sleeve fixing pin 312, so that when the rider sliding sleeve 310 drives the sliding sleeve fixing pin 312 to move, the sliding sleeve fixing pin 312 drives the rider traction member 330 to move.

[0232] Similarly, in order to control the travel of the driver drive component 320 along the driver 300, such as FIG. 10 As shown, the rider 300 has a drive member slot 322 extending along its length, and a drive member fixing pin 323 is configured to pass through the rider drive member 320 and the drive member slot 322. Thus, the travel distance of the drive member fixing pin 323 within the drive member slot 322 is the travel distance of the rider drive member 320 along the rider 300.

[0233] like FIG. 10 As shown, the second end 332 of the driver traction component 330 can be connected to the drive component fixing pin 323, so that when the driver traction component 330 drives the drive component fixing pin 323 to move, the drive component fixing pin 323 drives the driver drive component 320 to move.

[0234] The travel of the sliding sleeve retaining pin 312 within the sliding sleeve long groove 311 (i.e., the length of the sliding sleeve long groove 311 along the length direction of the rider 300) should be greater than or equal to the travel of the drive member retaining pin 323 within the drive member long groove 322 (i.e., the length of the drive member long groove 322 along the length direction of the rider 300), so that the movement of the rider sliding sleeve 310 is sufficient to drive the rider drive member 320 to the drive position, thereby driving the retaining rod locking member 410 to the release position.

[0235] To prevent the rider drive unit 320 from remaining in the drive position and causing the locking member 410 to remain in the unlocked position due to the pusher part 321 of the drive unit acting on the locking member pusher 411, thus preventing the locking member 410 from being unable to lock onto the rear foot 100, the rider drive unit 320 needs to be able to return to its initial position. FIG. 10 As shown, the retraction mechanism according to this disclosure may include a drive reset device 324, which is configured to move the driver drive 320 to an initial position so that the driver drive 320 can automatically return to the initial position without user operation.

[0236] exist FIG. 10In the embodiment shown, the driving member resetting device 324 can be a tension spring arranged in the handle 300, one end of which is connected to the inner wall of the handle 300 and the other end of which is connected to the driving member fixing pin 323. Of course, the driving member resetting device 324 can also be a compression spring, a torsion spring, a gas pressure rod or a hydraulic rod or other elastic member.

[0237] When the user is ready to fold the frame 1, he or she can operate the handle sleeve 310 on the handle 300 to move it upward along the handle 300, which then drives the handle driving member 320 to move from the initial position to the driving position via the handle pulling member 330. In this process, the driving member pushing part 321 of the handle driving member 320 exerts a force on the locking member pushing pin 411 arranged on the fixed rod locking member 410, causing the fixed rod locking member 410 to move to the unlocking position. That is, the fixed rod locking member 410 is unlocked relative to the rear leg 100, which allows the handle fixed rod 400 to pivot relative to the rear leg 100, thereby causing the handle 300, which pivots synchronously with the handle fixed rod 400, to also be able to pivot to the folded position relative to the rear leg 100 as the handle fixed rod 400 is unlocked relative to the rear leg 100.

[0238] Canopy device

[0239] In the use of the carrier vehicle, a canopy device 500 such as a sunroof is often used to provide a better carrying environment for the people or objects carried in the carrier vehicle.

[0240] FIG. 18 And FIG. 19 An embodiment of a canopy device 500 of a frame according to the present disclosure is shown.

[0241] As FIG. 18 shown, the canopy device 500 according to the present disclosure includes a canopy rod 510 for supporting a canopy 530. The canopy 530 can be made of a flexible material such as fabric and can have a sun protection effect.

[0242] The canopy rod 510 can include a movable canopy rod 511 and a substantially horizontally arranged fixed canopy rod 512. Among them, the movable canopy rod 511 is movable so that the user can adjust the degree of shielding provided by the canopy device 500 as needed. For example,

[0243] FIG. 4 The movable canopy rod 511 is shown in a vertical position, at which the canopy device 500 can provide a larger degree of shielding.

[0244] FIG. 5 The movable canopy rod 511 is shown in a horizontal position, at which the canopy device 500 can provide a smaller degree of shielding. Of course, the movable canopy rod 511 can move to other positions between the vertical position and the horizontal position.

[0245] In order to detachably fix the roof rod 510 to the vehicle frame 1, the roof device 500 according to the present disclosure further comprises a roof mount 520 detachably fixed to the vehicle frame 1.

[0246] As shown in FIG. 18 , one side of the roof mount 520 is provided with a rod clamping groove 523, and the end of the fixed roof rod 512 is fixed in the rod clamping groove 523, and the end of the movable roof rod 511 is pivoted to the other side of the roof mount 520. Thus, the movable roof rod 511 and the fixed roof rod 512 are connected to the roof mount 520.

[0247] As shown in FIG. 18 and FIG. 19 , the roof mount 520 is provided with a roof engaging portion 521, and the vehicle frame 1 is provided with a vehicle frame engaging portion 11, and the roof engaging portion 521 and the vehicle frame engaging portion 11 can be engaged with each other, so as to detachably fix the roof mount 520 to the vehicle frame 1.

[0248] Although in the embodiment shown in FIG. 17 and FIG. 19 , the vehicle frame engaging portion 11 is formed on the vehicle frame base 12, but the present disclosure is not limited thereto, and the vehicle frame engaging portion 11 can also be formed on other parts of the vehicle frame 1.

[0249] In addition, in the embodiment shown in FIGS. 17-19 , the roof engaging portion 521 and the vehicle frame engaging portion 11 are profiled grooves that match each other. In other embodiments, the roof engaging portion 521 and the vehicle frame engaging portion 11 can adopt other structures that match each other in concave-convex matching.

[0250] In order to make the engagement between the roof engaging portion 521 and the vehicle frame engaging portion 11 more secure, so as to avoid the roof device 500 from accidentally falling off the vehicle frame 1, as shown in FIG. 18 , the roof engaging portion 521 can be provided with a roof elastic portion 522 capable of exerting a pressing force on the vehicle frame engaging portion 11. The roof elastic portion 522 can be an elastic sheet or other elastic structure.

[0251] In an embodiment, one of the roof elastic portion 522 and the vehicle frame engaging portion 11 can be provided with an engaging recess 522A (see FIG. 18 ), and the other can be provided with an engaging protrusion 11A (see FIG. 19 ) capable of engaging with the engaging recess 522A. Through the engagement between the engaging recess 522A and the engaging protrusion 11A, the risk of the roof device 500 accidentally falling off the vehicle frame 1 is further reduced.

[0252] It should be understood that the present disclosure is not limited thereto, and the roof mount 520 can be fixed to the vehicle frame 1 in the form of threaded connection or pin connection, etc.

[0253] Vehicle handle structure of a vehicle frame

[0254] During the use of the vehicle, the user often needs to switch the handle 300 between the push mode and the tow mode. As mentioned above, when the frame 1 is in the unfolded state, the user can need to pivot the handle 300 relative to the rear leg 100 to release the lock, so as to switch the handle 300 from the push mode to the tow mode. Next, the structures related to these switches are described.

[0255] FIGS. 20-27B An embodiment of the vehicle handle structure of the frame 1 of the vehicle according to the present disclosure is shown.

[0256] In the frame 1 including the rear leg 100 and the handle 300, the vehicle handle structure according to the present disclosure includes a handle fixing rod 400 which is pivotally connected to the rear leg 100, and the handle 300 is connected to the handle fixing rod 400 in such a way that the handle 300 can pivot synchronously with the handle fixing rod 400 (see FIG. 20 ) or the handle 300 can pivot relative to the handle fixing rod 400 (see FIG. 21 ).

[0257] As shown in FIG. 22 and FIG. 23 , the handle 300 can be provided with a handle fixing member 340 which can move along the handle 300 between an engaged position and a disengaged position.

[0258] As shown in FIG. 22 , when the handle fixing member 340 moves to the engaged position, the handle locking portion 341 of the handle fixing member 340 can engage the free end 420 of the handle fixing rod 400, so that the handle 300 can pivot synchronously with the handle fixing rod 400. When the frame 1 is in the unfolded state, if the handle fixing rod 400 cannot pivot, the handle 300 also cannot pivot, and the user can push the vehicle by the handle 300, which is the push mode as shown in FIG. 20 . Alternatively, when preparing to fold the frame 1, the handle fixing rod 400 can pivot relative to the rear leg 100 to release the lock, and the handle 300 also pivots relative to the rear leg 100 to release the lock to the folding state (as shown in FIG. 2 and FIG. 3 ), which is beneficial for the user to fold the vehicle.

[0259] As shown in FIG. 23As shown, when the rider fixture 340 is moved in the direction of the arrow in the figure to the disengaged position, the rider locking portion 341 of the rider fixture 340 disengages from the free end 420 of the rider fixture bar 400, so that the rider 300 can be pivoted relative to the rider fixture bar 400. When the frame 1 is in the unfolded state, the rider fixture bar 400 is kept locked relative to the rear leg 100 and cannot be pivoted, but since the rider 300 can be pivoted relative to the rider fixture bar 400, the user can pivot the rider 300 to an angle position suitable for towing the trailer, and thus tow the carrier vehicle by the rider 300, which is the FIG. 21 towing mode shown.

[0260] As shown in the FIGS. 25A-27B embodiment, the rider fixture 340 can adopt a sleeve that is sleeved on the rider 300, which can be positioned in the vicinity of the free end 420 of the rider fixture bar 400 to function.

[0261] Of course, the rider fixture 340 can also adopt other structures having a groove that engages with the rider 300.

[0262] As shown in the FIG. 7B , FIG. 8B , FIG. 25B and FIG. 27B embodiments, the rider locking portion 341 on the rider fixture 340 can be formed by a portion extending from the sleeve-shaped body of the rider fixture 340, which has a fixture receiving portion 341A (see FIG. 8B ) that can be a recess, a sleeve or a collar and can receive the free end 420 of the rider fixture bar 400.

[0263] In order to control the stroke of the rider fixture 340 moving along the rider 300, as shown in FIG. 25B and FIG. 26B , a fixture long slot 342 extending along the length of the rider 300 is provided on the rider 300, and a fixture connecting pin 343 is arranged to pass through the rider fixture 340 and the fixture long slot 342. Thus, the stroke of the fixture connecting pin 343 moving in the fixture long slot 342 is the stroke of the rider fixture 340 moving along the rider 300.

[0264] In order to ensure that the rider locking portion 341 of the rider fixture 340 does not disengage from the free end 420 of the rider fixture bar 400 accidentally after engaging, as shown in FIG. 25B and FIG. 26B , the rider mechanism according to the present disclosure can further comprise a fixture resetting device 344 arranged to tend to move the rider fixture 340 to the engaged position.

[0265] The fixture resetting device 344 can adopt an elastic member such as a spring, a gas pressure rod or a hydraulic rod.

[0266] In addition, in order to facilitate the user to operate the handlebar fixing member 340 to disengage the handlebar locking portion 341 from the free end 420 of the handlebar fixing rod 400, as shown in FIG. 25B The handlebar fixing member 340 can be provided with a member releasing portion 345.

[0267] In the embodiment as shown in FIG. 25B The member releasing portion 345 can be a plurality of annular ribs or annular grooves arranged around the sleeve-shaped body of the handlebar fixing member 340, which can increase the friction between the user's fingers and the handlebar fixing member 340.

[0268] In other embodiments, the member releasing portion 345 can also be a pull ring or a pull hook connected to the handlebar fixing member 340, so that the user can drive the handlebar fixing member 340 to move to the disengaged position by hooking and pulling the pull ring or the pull hook.

[0269] When the handlebar locking portion 341 of the handlebar fixing member 340 is engaged with the free end 420 of the handlebar fixing rod 400, in order to avoid the handlebar 300 being pivoted to an angle that is too large (for example, the handlebar 300 being pivoted to touch the ground), as shown in FIG. 26B and FIG. 27B The rear leg 100 can be provided with a rear leg connecting seat 120 for the pivoting end 301 of the handlebar 300 to be pivoted thereon, and the handlebar pivoting shaft S11 can be arranged on the rear leg connecting seat 120, and the rear leg connecting seat 120 can be provided with a handlebar pivoting limiting portion 121 for limiting the pivoting angle of the pivoting end 301 of the handlebar 300.

[0270] In the embodiments as shown in FIG. 8B and FIG. 27B The handlebar pivoting limiting portion 121 can be a protrusion or a blocking rib arranged on the rear leg connecting seat 120. When the pivoting end 301 of the handlebar 300 is pivoted to a certain angle towards the falling direction (i.e., the pivoting direction of the handlebar 300 towards the ground), the protrusion or the blocking rib 121 can block the pivoting end 301 of the handlebar 300 from continuing to pivot towards the falling direction.

[0271] In other embodiments, the rear leg connecting seat 120 can be a housing for the pivoting end 301 of the handlebar 300 to be inserted therein, and a through long slot can be formed on the housing to allow the pivoting end 301 of the handlebar 300 to pivot within the range of the through long slot. In this case, the two ends of the through long slot are the handlebar pivoting limiting portions.

[0272] Wheel mechanism of a frame of a carrying vehicle

[0273] During the folding of the carrying vehicle, after the user folds the frame 1, the orientation of the wheels 600 can be such that the wheels 600 are away from the body of the frame 1 (as shown inFIG. 33 As shown), this results in the frame 1 still having a relatively large volume when folded, so the user needs to manually rotate the wheel 600 to bring it closer to the main body of the frame 1 (as shown). FIG. 34 and FIG. 35 (As shown), only by doing so can the volume of frame 1 be reduced to a minimum, and this folding operation is very inconvenient.

[0274] Therefore, this disclosure provides a wheel mechanism that, while folding the frame 1, can rotate the wheels 600 to a suitable orientation to reduce packaging volume and facilitate user carrying. This not only saves storage space but also reduces packaging costs for manufacturers.

[0275] FIGS. 28-53B An embodiment of the wheel mechanism of the frame 1 of the vehicle according to the present disclosure is shown.

[0276] like FIGS. 28-35 As shown, in a frame 1 including a front leg 200, a rear leg 100 and a wheel 600, the wheel mechanism according to the present disclosure includes a wheel seat 610 which is steerably connected to the front leg 200 or the rear leg 100, and the wheel 600 is connected to the wheel seat 610 and can be steered synchronously with the wheel seat 610.

[0277] FIG. 36 and FIG. 37 An embodiment is shown in which the wheel seat 600 is connected to the front foot 200. The bottom end of the front foot 202 of the front foot 200 is provided with a wheel seat mounting shaft 640 (see [link]). FIG. 36 The top of the wheel seat 610 is provided with a wheel seat mounting hole 614 (see...). FIG. 37 The wheel seat 610 is connected to the front foot 200 by inserting the wheel seat mounting shaft 640 into the wheel seat mounting hole 614.

[0278] In order to hold the wheel seat mounting shaft 640 in the wheel seat mounting hole 614, such as FIG. 37 , FIG. 39 , FIG. 43 , FIG. 44 As shown, the wheel mechanism according to this disclosure may include a wheel seat locking member 660 disposed on the wheel seat 610. This locking member may be in the form of a sheet and has a pressing portion protruding from the wheel seat connecting housing 613 of the wheel seat 610 for pressing by a user. The sheet-like structure of the wheel seat locking member 660 has a large locking member through hole and a small locking member through hole arranged side-by-side and communicating with each other (see [link to documentation]). FIG. 39), wherein the radial dimension of the large hole of the locking member is larger than the main radial dimension of the wheel seat mounting shaft 640, the radial dimension of the small hole of the locking member is smaller than the main radial dimension of the wheel seat mounting shaft 640 but larger than the radial dimension of the recess on the wheel seat mounting shaft 640, so that when the recess on the wheel seat mounting shaft 640 is radially coincided with the small hole of the locking member, the wheel seat mounting shaft 640 is kept in the wheel seat mounting hole 614; when the pressing part of the wheel seat locking member 660 is pressed to make the wheel seat locking member 660 radially move so that the recess on the wheel seat mounting shaft 640 is no longer radially coincided with the small hole of the locking member and the wheel seat mounting shaft 640 is completely radially coincided with the large hole of the locking member, the wheel seat mounting shaft 640 can exit the wheel seat mounting hole 614.

[0279] In addition, as shown in FIG. 39 , FIG. 43 , FIG. 44 , the wheel seat 610 can also be provided with a wheel seat resetting device 661, which is arranged to tend to move the wheel seat locking member 660 to the position where the small hole of the locking member is radially coincided with the recess on the wheel seat mounting shaft 640, so as to ensure that the wheel seat mounting shaft 640 is kept in the wheel seat mounting hole 614.

[0280] In another embodiment, the wheel seat mounting shaft 640 can also be arranged on the wheel seat 610, and the wheel seat mounting hole 614 is correspondingly arranged in the front leg 200.

[0281] Of course, the wheel seat 600 can also be connected to the rear leg 100 in the same way.

[0282] In other embodiments, the wheel seat 600 can also be connected to the front leg 200 or the rear leg 100 in other ways such as threaded connection.

[0283] It should be noted that the wheel mechanism according to the present disclosure is applicable to each wheel 600 and the front leg 200 or the rear leg 100 connected with the wheel seat 610, so the following will be described according to the case shown in the drawings.

[0284] When the frame 1 is in the unfolded state and the folded state, the wheel 600 needs to at least keep in the unfolded orientation (i.e. the orientation of the wheel 600 when the frame 1 is unfolded, at this time, the wheel 600 is away from the body of the frame 1, see FIG. 32 ) and the folded orientation (i.e. the orientation of the wheel 600 when the frame 1 is folded, at this time, the wheel 600 is close to the body of the frame 1, see FIG. 35 ). For this purpose, as shown in FIG. 36 and FIG. 37As shown, the wheel seat 610 is provided with a wheel steering positioning member 611, and the front leg 200 or the rear leg 100 corresponding to the wheel seat 610 is provided with at least two wheel steering positioning holes 620. When the wheel steering positioning member 611 is inserted into one of the wheel steering positioning holes 620, the wheel seat 610 and the wheel 600 connected thereto can be oriented, so that the wheel seat 610 and the wheel 600 connected thereto are kept in an unfolded orientation, a folded orientation or other orientations.

[0285] More specifically, the wheel steering positioning member 611 can be operated to move between an orientation position and a non-orientation position. As shown in FIG. 42 and FIG. 44 When the wheel steering positioning member 611 moves to the orientation position, the wheel steering positioning member 611 can be inserted into one of the wheel steering positioning holes 620, so that the wheel seat 610 and the wheel 600 connected thereto are oriented. As shown in FIG. 41 and FIG. 43 When the wheel steering positioning member 611 moves to the non-orientation position, the wheel steering positioning member 611 exits the wheel steering positioning hole 620, so as to allow the wheel seat 610 and the wheel 600 connected thereto to be steered.

[0286] In order to enable the wheel steering positioning member 611 to move between the orientation position and the non-orientation position, in the embodiment shown in FIG. 37 and FIG. 39 According to the wheel mechanism of the present disclosure, the wheel mechanism can comprise an orientation member accommodating seat 612 movably arranged in the wheel seat 610, and the wheel steering positioning member 611 is arranged in the orientation member accommodating seat 612 and moves with the orientation member accommodating seat 612.

[0287] In another embodiment, a receiving channel can be arranged in the wheel seat 610, and the wheel steering positioning member 611 can move up and down in the receiving channel.

[0288] In order to facilitate the user to operate the wheel steering positioning member 611 to move between the orientation position and the non-orientation position, the wheel mechanism according to the present disclosure can further comprise a wheel orientation operating member 630 arranged to be operated to drive the orientation member accommodating seat 612 to move.

[0289] In the embodiment shown in FIG. 38 and FIG. 39 The wheel orientation operating member 630 is a wheel operating knob 630 in the form of a ring, which can be sleeved on the wheel seat connecting shell 613 of the wheel seat 610. Moreover, as shown in FIG. 38 The inner wall of the wheel operating knob 630 is provided with a knob driving inclined rib 631. Correspondingly, as shown in FIG. 39As shown, the outer wall of the directional member receiving seat 612 is provided with a receiving seat driving groove 612A. The knob driving rib 631 is disposed in the receiving seat driving groove 631 and can apply force to the receiving seat driving groove 631. Thus, when the wheel operation knob 630 is rotated, the wheel operation knob 630 can drive the directional member receiving seat 612 to move by means of the force of the knob driving rib 631 on the receiving seat driving groove 631, so that the wheel steering positioning member 611 can move between the directional position and the non-directional position.

[0290] exist FIG. 38 In the embodiment shown, the end of the knob drive rib 631 may be provided with a rib limiting part 632, which can control the rotation stroke of the wheel operation knob 630 to prevent the wheel operation knob 630 from rotating too much and causing the knob drive rib 631 to disengage from the receiving seat drive groove 631.

[0291] In such FIG. 38 In the illustrated embodiment, the wheel operation knob 630 may further include a knob operation protrusion 633 that protrudes outward from the outer wall surface of the wheel operation knob 630 to allow the user to operate the wheel operation knob 630.

[0292] Of course, the wheel orientation operating member 630 can also adopt other structures, such as a lever, one end of which is connected to the orientation member receiving seat 612 or the wheel steering positioning member 611, and the other end is exposed in the wheel seat 610. By moving the lever, the wheel steering positioning member 611 can be moved between the orientation position and the non-orientation position.

[0293] like FIG. 37 and FIG. 41 As shown, a wheel cover 650 can be provided above the wheel operation knob 630, which covers the internal structure of the wheel seat 610 from above to prevent foreign objects from entering the interior of the wheel seat 610. The wheel cover 650 can be provided with a first cover hole 651 through which the wheel seat mounting shaft passes and a second cover hole 652 through which the wheel steering positioning member 611 passes.

[0294] To further facilitate the user, the wheel mechanism according to this disclosure also enables the wheel seat 610 and its connected wheel 600 to move in a directional manner from a directional state to a steering-allowed state during the retraction process of the frame 1, and the wheel seat 610 and its connected wheel 600 to move in a retracted orientation (see [link]). FIGS. 45A-49B (and does not require direct user intervention.)

[0295] First, the structure of the wheel seat 610 and the connected wheel 600, which are linked together, change from orientation to allow steering during the retraction of the frame 1.

[0296] The frame 1 can include at least one of a front bottom tube 710 and a rear bottom tube 720, wherein the front bottom tube 710 and / or the rear bottom tube 720 are arranged to pivot during the folding of the frame 1 and to drive the wheel steering positioning member 611 to the non-oriented position.

[0297] In FIG. 46B the illustrated embodiment, a first end 711 of the front bottom tube 710 is pivotally connected to the front leg 200, and a first end 721 of the rear bottom tube 720 is pivotally connected to the rear leg 100.

[0298] As FIG. 48B and FIG. 46B illustrated, at least one of the first end 711 of the front bottom tube 710 and the first end 721 of the rear bottom tube 720 can be provided with a bottom tube driving portion 701, and the corresponding front leg 200 and / or rear leg 100 can be provided with a bottom tube transmission assembly, through the pivoting of the front bottom tube 710 and / or the rear bottom tube 720, the bottom tube driving portion 701 thereon can drive the wheel steering positioning member 611 to the non-oriented position via the bottom tube transmission assembly.

[0299] FIG. 48B 、 FIGS. 49B-51 and FIGS. 49B-51 An embodiment of the bottom tube transmission assembly according to the present disclosure is illustrated. The bottom tube transmission assembly is arranged in the wheel seat 610 and includes a first transmission member 702 abutting the bottom tube driving portion 701 and a second transmission member 703 abutting the wheel steering positioning member 611. The first transmission member 702 abuts the second transmission member 703, so that the force of the bottom tube driving portion 701 is transmitted to the wheel steering positioning member 611 via the first transmission member 702 and the second transmission member 703.

[0300] In order to change the transmission direction of the force, as FIG. 50 illustrated, the contact surface of the first transmission member 702 abutting the bottom tube driving portion 701 and the contact surface of the first transmission member 702 abutting the second transmission member 703 can both be arranged as a transmission inclined surface. For example, the first transmission member 702 can be provided with a first driving inclined surface 702A and a first driven inclined surface 702B (see FIG. 51 ), and the second transmission member 703 can be provided with a second driven inclined surface 703A (see FIG. 46B ).

[0301] As FIG. 48B and FIGS. 52A-53B illustrated, the bottom tube transmission assembly according to the present disclosure can further include a second transmission member reset device 703B arranged to tend to press the second transmission member 703 against the first transmission member 702 to avoid the two from being out of contact.

[0302] Next, the structure in which the wheel seat 610 and the connected wheel 600 are driven to turn toward the retraction orientation during the retraction process of the frame 1 will be described.

[0303] exist FIG. 37 In the embodiment shown, at least one of the first end 711 of the front bottom tube 710 and the first end 721 of the rear bottom tube 720 may be provided with a bottom tube pusher 704, and the wheel seat 610 is provided with a wheel seat driven part 653. By pivoting the corresponding front bottom tube 710 and / or rear bottom tube 720 during the retraction of the frame 1, the bottom tube pusher 704 can push the wheel seat driven part 653, thereby driving the wheel seat 610 to turn to the retraction orientation.

[0304] The bottom tube pushing part 704 may be a radial extension provided on the first end 711 of the front bottom tube 710 and / or the first end 721 of the rear bottom tube 720.

[0305] The wheel seat driven part 653 may be a radial protrusion provided on the outer periphery of the wheel seat cover 650 (see...). FIGS. 14-17 It can also be a radial protrusion located in other parts of the wheel seat 610.

[0306] It should be understood that regarding the structure of the wheel seat 610 and its connected wheel 600, which moves from an orientation to a steering-allowed orientation during the retraction of the frame 1, and the structure that is driven to turn back to the retraction orientation, either one of these structures can be provided separately on the frame 1, or both structures can be provided on the frame 1. If both structures are provided on the frame 1, then these two structures should be configured such that the wheel seat 610 and its connected wheel 600 first move from an orientation to a steering-allowed orientation during the retraction of the frame 1, and then are driven to turn back to the retraction orientation.

[0307] The chassis of the transport vehicle

[0308] The following will describe the connecting components of the vehicle frame according to this disclosure, as well as their connection and linkage relationships.

[0309] FIGS. 14-16 An embodiment of the vehicle frame according to the present disclosure is shown. The lines connecting the pivot axes between the various connecting members of the frame 1 form multiple linkage quadrilaterals. Each pair of pivot axes corresponds substantially to one connecting member. Through these linkage quadrilaterals, the movement of any connecting member of the frame 1 will cause the other multiple connecting members to move together. This allows the user to operate only one or two connecting members of the frame 1 during its unfolding and folding process, enabling the other connecting members to unfold and fold together simultaneously. This greatly increases the convenience for the user when unfolding and folding the frame 1.

[0310] like FIGS. 14-17As shown, the frame 1 can include a frame base 12, a front leg 200, a rear leg 100, a front bottom tube 710 and a rear bottom tube 720.

[0311] Wherein, the front leg 200 includes a front leg upper portion 201 and a front leg lower portion 202 which are pivotally connected to each other via a front leg pivot shaft S1, the rear leg 100 includes a rear leg upper portion 101 and a rear leg lower portion 102 which are pivotally connected to each other via a rear leg pivot shaft S2, and the rear leg upper portion and the front leg upper portion are pivotally connectable to the frame base 12 of the frame 1 via a first frame pivot shaft S3.

[0312] In addition, the front bottom tube 710 is pivotally connected to the front leg lower portion 202 via a front bottom tube pivot shaft S4, and is pivotally connected to the frame base 12 via a second frame pivot shaft S5.

[0313] The rear bottom tube 720 is pivotally connected to the rear leg lower portion 102 via a rear bottom tube pivot shaft S6, and is pivotally connected to the frame base 12 via a third frame pivot shaft S7.

[0314] Thus, the sequentially connected first frame pivot shaft S3, rear leg pivot shaft S2, rear bottom tube pivot shaft S6 and third frame pivot shaft S7 can form a first polygon, and the sequentially connected first frame pivot shaft S3, front leg pivot shaft S1, front bottom tube pivot shaft S4 and second frame pivot shaft S5 can form a second polygon.

[0315] As shown, the frame 1 can further include a frame slider 13, a first connecting member 730 and a second connecting member 740. FIG. 17

[0316] As shown, the frame slider 13 is movably arranged on the frame base 12 along the up-down direction. For example, the frame slider 13 can move in a base slider slot 12A of the frame base 12 which extends along the up-down direction. FIGS. 14-16

[0317] The first connecting member 730 is pivotally connected to the rear leg upper portion 101 via a first connecting member pivot shaft S8, the second connecting member 740 is pivotally connected to the front leg upper portion 201 via a second connecting member pivot shaft S9, and the second connecting member 740 and the first connecting member 730 are pivotally connectable to the frame slider 13 via a slider pivot shaft S10.

[0318] Thus, the sequentially connected first frame pivot shaft S3, first connecting member pivot shaft S8, slider pivot shaft S10 and second connecting member pivot shaft S9 can form a third polygon.

[0319] As shown, the frame 1 can further include a support member 750. FIG. 5

[0320] ​​​Wherein, the rider 300 is pivoted to the rear leg upper portion 101 via a rider pivot axis S11, and the support 750 is pivoted to the rider 300 via a support pivot axis S12, and is pivoted to the frame base 12 via a second frame pivot axis S5.

[0321] Thus, the sequential connection of the first frame pivot axis S3, the second frame pivot axis S5, the support pivot axis S12 and the rider pivot axis S11 can form a fourth polygon.

[0322] The edges of the first polygon, the second polygon, the third polygon and the fourth polygon include most of the connecting members of the frame 1. Moreover, the four polygons are interrelated, and when one polygon is deformed, the other polygons will be deformed accordingly, so that the connecting members of the frame 1 are connected and moved with each other, and finally the frame 1 is unfolded and folded.

[0323] Next, how the folding mechanism, the roof device, the rider mechanism and the wheel structure of the frame 1 cooperate and operate with each other during the folding of the frame 1, and how the four polygons are deformed in connection will be described in detail.

[0324] When the user is ready to fold the frame 1, for the frame 1 with the roof device 500, the user can choose to fold the roof device 500 of the frame 1 first. That is, the movable roof rod 511 is moved to the horizontal position and is stacked on the fixed roof rod 512, as shown in FIG. 15 .

[0325] Of course, the user can also choose not to fold the roof device 500 of the frame 1, as shown in FIG. 16 and FIGS. 20-24 .

[0326] Alternatively, if the frame 1 is not equipped with the roof device 500, as shown in FIG. 21 , the roof device 500 does not need to be operated.

[0327] Next, if the rider 300 is in the trailer mode as shown in FIG. 21 , in order to fold the frame 1, the user needs to operate the rider mechanism of the frame 1 to switch the rider 300 to the trolley mode, so that the rider 300 can be pivoted synchronously with the rider fixed rod 400.

[0328] For example, the user can pivot the rider 300 relative to the rear leg 100 towards the direction away from the ground (i.e., the counterclockwise direction in FIG. 15 , until the rider 300 and the rider fixed rod 400 are substantially coincident in the transverse direction, so that the rider locking portion 341 of the rider fixed member 340 provided on the rider 300 engages with the free end 420 of the rider fixed rod 400, so that the rider 300 can be pivoted synchronously with the rider fixed rod 400, and is ready for the folding of the frame 1.

[0329] Then, the user will release the lock on frame 1.

[0330] Specifically, the user can operate the release mechanism of the frame 1's retraction mechanism, that is, operate the rider's sliding sleeve 310 on the rider 300, causing the rider's locking lever 400 to unlock relative to the rear foot 100 and pivot. This causes the rider 300, which pivots synchronously with the rider's locking lever 400 relative to the rear foot 100, to also pivot towards the retracted position. Thus, the frame 1 is unlocked.

[0331] After that, the user will fold up the frame 1.

[0332] like ​ As shown, after the frame 1 is unlocked, the user can push the rider 300 forward, which lifts the support 750 upward and pulls the upper rear leg 101 upward. As a result, the fourth polygon involving the rider 300, the support 750, the upper rear leg 101, and the frame base 12 deforms.

[0333] As the fourth polygon deforms, the upper part 101 of the rear foot causes the lower part 102 of the rear foot to move upward, and the lower part 102 of the rear foot in turn causes the rear undertube 720 to move upward. As a result, the first polygon involving the upper part 101 of the rear foot, the lower part 102 of the rear foot, the rear undertube 720 and the frame base 12 also deforms.

[0334] At the same time, the upper part 101 of the rear foot also drives the first connector 730 upward, the first connector 730 drives the second connector 740 upward, and the second connector 740 pushes the upper part 201 of the front foot upward. As a result, the third polygon involving the upper part 101 of the rear foot, the first connector 730, the second connector 740, and the upper part 201 of the front foot also deforms.

[0335] At the same time, the upper part 201 of the front foot drives the lower part 202 of the front foot upward, and the lower part 202 of the front foot in turn drives the front bottom tube 710 upward. As a result, the second polygon involving the upper part 201 of the front foot, the lower part 202 of the front foot, the front bottom tube 710 and the frame base 12 also deforms.

[0336] Ultimately, the four polygons deform simultaneously, causing the associated connecting components to move and come together, thus allowing the frame 1 to be retracted.

[0337] During the retraction of the frame 1, the wheel mechanism of the frame 1 is also driven, causing the wheel seat 610 and its connected wheel 600 to turn to the retraction orientation.

[0338] Specifically, during the deformation involving the first polygon of the rear lower leg 102 and the rear lower tube 720 and the second polygon of the front lower leg 202 and the front lower tube 710, the rear lower tube 720 pivots relative to the rear lower leg 102 and the front lower tube 710 pivots relative to the front lower leg 202 such that the lower tube drive 701 provided on at least one of the rear lower tube 720 and the front lower tube 710 causes the wheel steering positioning member 611 in the wheel seat 610 to move to a non-oriented position via the lower tube transmission assembly, thereby causing the wheel seat 610 and its connected wheel 600 to change from being oriented to being allowed to steer.

[0339] Subsequently, the rear lower tube 720 continues to pivot relative to the rear lower leg 102 and the front lower tube 710 continues to pivot relative to the front lower leg 202 such that the lower tube push 704 provided on at least one of the rear lower tube 720 and the front lower tube 710 pushes the wheel seat driven 653 on the wheel seat 610, thereby causing the wheel seat 610 and its connected wheel 600 to steer to a collapsed orientation.

[0340] Finally, the various component members of the frame 1 are compactly collapsed together.

[0341] The foregoing examples and advantages are merely exemplary and are not to be construed as limiting the scope of the disclosure. The description herein is intended to be illustrative, and not to limit the scope of the claims. Many alternatives, modifications, and variations will be apparent to those skilled in the art. The features, structures, methods, and other characteristics described herein can be combined in various ways to obtain other and / or additional exemplary embodiments.

Claims

1. A folding mechanism of a frame of a carrying vehicle, characterized in that, the frame comprises a rear leg and a handle, the folding mechanism comprises a handle fixing rod, the handle fixing rod is pivoted to the rear leg, the handle is connected with the handle fixing rod so that the handle can be pivoted synchronously with the handle fixing rod, wherein the handle fixing rod is provided with a fixing rod locking member, the fixing rod locking member can be moved between a locking position and a releasing position, when the fixing rod locking member is moved to the locking position, the fixing rod locking member is locked on the rear leg to prevent the handle fixing rod from being pivoted relative to the rear leg; when the fixing rod locking member is moved to the releasing position, the fixing rod locking member is released relative to the rear leg to allow the handle fixing rod to be pivoted relative to the rear leg.

2. The folding mechanism of claim 1, wherein, the fixing rod locking member is located in the handle fixing rod and can be moved along the handle fixing rod between the locking position and the releasing position, the rear leg is provided with a rear leg locking hole at a position where the handle fixing rod is pivoted, when the fixing rod locking member is moved to the locking position, the fixing rod locking member is inserted into the rear leg locking hole; when the fixing rod locking member is moved to the releasing position, the fixing rod locking member is withdrawn from the rear leg locking hole.

3. The folding mechanism of claim 1, wherein, the folding mechanism further comprises a handle sliding sleeve which can be moved along the handle, the handle sliding sleeve can drive the fixing rod locking member to move to the releasing position via a sliding sleeve transmission assembly.

4. The collapsing mechanism of claim 3, wherein, the sliding sleeve transmission assembly comprises: a handle driving member which is arranged to be movable along the handle; a handle traction member, a first end of the handle traction member is connected to the handle sliding sleeve, a second end of the handle traction member is connected to the handle driving member, so that the movement of the handle sliding sleeve can drive the handle driving member to move from an initial position to a driving position; wherein the handle driving member is provided with a driving member pushing portion, the driving member pushing portion interacts with a locking member pushing pin arranged on the fixing rod locking member, so that the handle driving member can drive the fixing rod locking member to move to the releasing position.

5. A wheel mechanism of a frame of a carrying vehicle, characterized in that, the frame comprises a front leg, a rear leg and a wheel, the wheel mechanism comprises: a wheel seat which is connected to the front leg or the rear leg in a steerable manner, the wheel is connected to the wheel seat and can be steered synchronously with the wheel seat, the wheel seat is provided with a wheel steering positioning member, the front leg and / or the rear leg corresponding to the wheel seat is provided with at least two wheel steering positioning holes, wherein the wheel steering positioning member can be operated to move between a directional position and a non-directional position, when the wheel steering positioning member moves to the directional position, the wheel steering positioning member can be inserted into one of the wheel steering positioning holes to orient the wheel; when the wheel steering positioning member moves to the non-directional position, the wheel steering positioning member is withdrawn from the wheel steering positioning hole to allow the wheel to be steered.

6. The wheel mechanism of claim 5, wherein The wheel mechanism includes a directional member receiving seat movably arranged on the wheel seat, and the wheel steering directional member is arranged on the directional member receiving seat and moves with the directional member receiving seat.

7. The wheel mechanism according to claim 5 or 6, wherein, The frame includes at least one of a front bottom tube pivoted to the front leg and a rear bottom tube pivoted to the rear leg, wherein the front bottom tube and / or the rear bottom tube is arranged to pivot during the folding of the frame and to drive the wheel steering directional member to move to the non-directional position.

8. A vehicle characterized by comprising: The frame of the carrying vehicle includes: a frame base, a front leg including a front leg upper portion and a front leg lower portion pivoted to each other via a front leg pivot shaft, a rear leg including a rear leg upper portion and a rear leg lower portion pivoted to each other via a rear leg pivot shaft, the rear leg upper portion and the front leg upper portion being pivotably connected to the frame base via a first frame pivot shaft, a front bottom tube pivoted to the front leg lower portion via a front bottom tube pivot shaft and to the frame base via a second frame pivot shaft, a rear bottom tube pivoted to the rear leg lower portion via a rear bottom tube pivot shaft and to the frame base via a third frame pivot shaft, wherein the first frame pivot shaft, the rear leg pivot shaft, the rear bottom tube pivot shaft and the third frame pivot shaft are sequentially connected to form a first polygon, and the first frame pivot shaft, the front leg pivot shaft, the front bottom tube pivot shaft and the second frame pivot shaft are sequentially connected to form a second polygon.

9. The cart of claim 8, wherein, The frame of the carrying vehicle further includes: a frame slider movably arranged on the frame base in the up-down direction, a first connecting member pivoted to the rear leg upper portion via a first connecting member pivot shaft, a second connecting member pivoted to the front leg upper portion via a second connecting member pivot shaft, the second connecting member and the first connecting member being pivotably connected to the frame slider via a slider pivot shaft, wherein the first frame pivot shaft, the first connecting member pivot shaft, the slider pivot shaft and the second connecting member pivot shaft are sequentially connected to form a third polygon.

10. A vehicle as claimed in claim 8 or 9, characterised in that, The frame of the carrying vehicle further includes: a hand member pivoted to the rear leg upper portion via the hand member pivot shaft, a support member pivoted to the hand member via a support member pivot shaft and to the frame base via the second frame pivot shaft, wherein the first frame pivot shaft, the second frame pivot shaft, the support member pivot shaft and the hand member pivot shaft are sequentially connected to form a fourth polygon.

Images