Transportation means

Abstract

The present application relates to a transportation means, comprising: a frame assembly; a seat assembly, rotatable relative to the frame assembly and having a first use state and a second use state; and a linkage mechanism, connected between the seat assembly and the frame assembly and used for allowing or restricting the seat assembly from switching between the first use state and the second use state.

Description

Vehicle TECHNICAL FIELD

[0001] The present application relates to the technical field of wheeled mobile devices, and in particular to a vehicle. BACKGROUND

[0002] In modern families, strollers have become an indispensable auxiliary tool for parents to carry infants and young children when going out, which greatly facilitates the activities of parents and makes it easier to take care of infants and young children.

[0003] However, as children grow up, when they gradually acquire the ability to walk and play, traditional strollers often face the fate of being idle, which leads to a short use cycle and relatively low utilization rate of the strollers.

[0004] Some strollers can have a foldable design. When the stroller is not needed, its volume can be reduced by folding it to facilitate storage or carrying. Some traditional strollers generally need to hold both ends of the stroller with both hands, and by applying a force to the two ends of the stroller towards the middle, the stroller can be folded and folded. However, this operation process can be tedious and laborious, and the user may need to bend over to adjust the posture and use both hands to apply force to successfully fold the stroller, which can be inconvenient for the user. SUMMARY

[0005] Therefore, it is necessary to provide a vehicle for at least one of the above technical problems.

[0006] In a first aspect of the present application, a vehicle is provided, which has a wide range of uses, a long use cycle, and a high utilization rate.

[0007] The vehicle of the first aspect can include a frame assembly, a seat assembly rotatable relative to the frame assembly and having a first use state and a second use state, and a linkage mechanism connected between the seat assembly and the frame assembly for allowing or limiting the seat assembly to switch between the first use state and the second use state.

[0008] In one embodiment, the linkage mechanism includes a first linkage member pivotally connected between the seat assembly and the frame assembly, an adjustment member movably disposed on the frame assembly and pivotally connected to the seat assembly, and a locking assembly disposed between the adjustment member and the frame assembly and adapted to limit or allow movement of the adjustment member relative to the frame assembly.

[0009] In one embodiment, the locking assembly has a locked state and an unlocked state; when the locking assembly is in the locked state, the adjustment member is fixed relative to the frame assembly to restrict the seat assembly from switching between the first use state and the second use state; when the locking assembly is in the unlocked state, the adjustment member is movable relative to the frame assembly to allow the seat assembly to switch between the first use state and the second use state.

[0010] In one embodiment, the locking assembly includes a first locking member movable relative to the frame assembly and the adjustment member and having a locked position and an unlocked position; a first locking portion provided on the adjustment member; and a second locking portion provided on the seat assembly; when the first locking member is in the locked position, the first locking member is in locking engagement with the first locking portion and the second locking portion to restrict the adjustment member from moving relative to the frame assembly; when the first locking member is in the unlocked position, the first locking member is out of locking engagement with the first locking portion and the second locking portion to allow the adjustment member to move relative to the frame assembly.

[0011] In one embodiment, the second locking portion includes a first locking hole, when the first locking member is in locking engagement with the first locking hole, the seat assembly is in the first use state; and a second locking hole, when the first locking member is in locking engagement with the second locking hole, the seat assembly is in the second use state.

[0012] In one embodiment, the locking assembly further includes an unlocking member having a locked position and an unlocked position in its moving path, the unlocking member is operatively connected with the first locking member; when the unlocking member is in the locked position, the first locking member is in the locked position, when the unlocking member is in the unlocked position, the first locking member is in the unlocked position.

[0013] In one of the embodiments, the locking assembly further comprises a support base and a guide, the support base is arranged on the adjusting member and has a first guide portion, the first guide portion extends perpendicularly to the moving direction of the release member, the first locking member is movably arranged on the support base, the guide extends through the first locking member and extends into the first guide portion; the release member is provided with a second guide portion, the second guide portion extends obliquely relative to the moving direction of the release member, the guide can extend into the second guide portion and slide with the second guide portion; when the release member switches between the locking position and the release position, the first locking member can switch between the locking position and the release position through the cooperation of the guide with the first guide portion and the second guide portion.

[0014] In one of the embodiments, the locking assembly further comprises a first reset member, the first reset member provides elastic return force for the release member to keep the release member in the locking position.

[0015] In one of the embodiments, the seat assembly comprises a surrounding frame in a closed frame type in the circumferential direction; when the seat assembly is in the first use state, the surrounding frame is arranged at an angle with the horizontal plane; when the seat assembly is in the second use state, the surrounding frame is arranged parallel to the horizontal plane.

[0016] In one of the embodiments, when the seat assembly is in the second use state, a placing plate is placed at the opening of the surrounding frame, so that the vehicle is used as a table.

[0017] In one of the embodiments, the positioning assembly further comprises a handle assembly, the handle assembly is pivotally connected to the frame assembly so that the vehicle has a trailer mode, a trolley mode and a cradle mode.

[0018] In one of the embodiments, when the vehicle is in the trolley mode, the handle assembly is located at the first side of the frame assembly and is arranged at an angle with the horizontal plane; when the vehicle is in the trailer mode, the handle assembly is located at the second side of the frame assembly and is arranged at an angle with the horizontal plane; when the vehicle is in the cradle mode, the handle assembly is arranged parallel to the horizontal plane; wherein the second side is arranged opposite to the first side relative to the moving direction of the vehicle.

[0019] In one of the embodiments, the frame assembly is provided with a first limiting member, the handle assembly is provided with a clamping member, the clamping member is suitable for clamping with the first limiting member, so that the vehicle is in the trolley mode.

[0020] In one of the embodiments, the frame assembly is provided with a second limiting member adapted to be engaged with the handle assembly to enable the carrier to be in the cradle mode.

[0021] In one of the embodiments, the handle assembly is pivotally connected with the frame assembly at a first pivot point, and the first and second limiting members are arranged in a circumferential direction of the first pivot point.

[0022] In the second aspect of the present application, a carrier is provided to enable a user to fold it in a more convenient manner.

[0023] The carrier of the second aspect can include a frame assembly, a handle assembly connected to the frame assembly, a seat assembly pivotally connected to the frame assembly and forming a first pivot point, and a linkage assembly pivotally connected to the seat assembly and forming a second pivot point, and being slidable relative to the frame assembly, wherein the linkage assembly is slidable relative to the frame assembly and the handle assembly is rotatable in a first rotation direction to drive the seat assembly to switch from an unfolded state to a folded state.

[0024] In the carrier described above, when the user needs to fold the carrier, the user can step on the linkage assembly to make the linkage assembly slide relative to the frame assembly, and at the same time, the user can hold the handle assembly and rotate the handle assembly in the first rotation direction to drive the frame assembly to rotate in the first rotation direction. In this way, the rotation of the frame assembly in the first rotation direction acts on the seat assembly via the first pivot point, and the sliding of the linkage assembly acts on the seat assembly via the second pivot point, which together drive the seat assembly to rotate from the unfolded state to the folded state, and in the process, other components in the carrier are also driven to the folded state, thereby achieving the folding of the entire carrier. This folding method does not require the user to bend over, but only needs to hold the handle assembly with one hand and step on the linkage assembly with the other foot, which is more labor-saving and convenient than the related art method of folding with both hands.

[0025] In one of the embodiments, the linkage assembly includes a sliding member slidably connected to the frame assembly, a first linkage member having one end pivotally connected to the seat assembly and forming the second pivot point and the other end pivotally connected to the sliding member, and a stepping member connected to the sliding member, wherein the rotation of the stepping member drives the sliding member to slide relative to the frame assembly and drives the seat assembly to switch from the unfolded state to the folded state via the first linkage member.

[0026] In one of the embodiments, the linkage assembly further includes a second linkage member having one end pivotally connected to the frame assembly and the other end pivotally connected to the sliding member, wherein the rotation of the handle assembly in the first rotation direction drives the frame assembly to rotate in the first rotation direction and drives the sliding member to slide relative to the frame assembly via the second linkage member.

[0027] In one of the embodiments, the linkage assembly further comprises a first locking assembly disposed between the sliding member and the frame assembly and switchable between a locked state to restrict the sliding movement of the sliding member relative to the frame assembly and an unlocked state to allow the sliding movement of the sliding member relative to the frame assembly.

[0028] In one of the embodiments, the first locking assembly comprises a first locking member disposed on the sliding member and movable relative to the frame assembly and having a locked position and an unlocked position, and a first locking counterpart disposed on the frame assembly; wherein when the first locking member is in the locked position, the first locking member is locked with the first locking counterpart to restrict the sliding movement of the sliding member relative to the frame assembly; and when the first locking member is in the unlocked position, the first locking member is unlocked from the first locking counterpart to allow the sliding movement of the sliding member relative to the frame assembly.

[0029] In one of the embodiments, the stepping member has a pivoting portion, the stepping member is pivoted to the sliding member via the pivoting portion, the pivoting portion of the stepping member is drivingly connected to the first locking member, the stepping member has a locked position and an unlocked position in a rotation path of the stepping member relative to the sliding member; wherein when the stepping member is rotated relative to the sliding member in a second rotation direction to the unlocked position, the first locking member is moved to the unlocked position, and when the stepping member is rotated relative to the sliding member in a first rotation direction to the locked position, the first locking member is moved to the locked position.

[0030] In one of the embodiments, the linkage assembly further comprises a first return member providing an elastic return force to the stepping member tending to switch the stepping member to the locked position.

[0031] In one of the embodiments, the sliding member is provided with a stop portion, when the stepping member is rotated relative to the sliding member in the first rotation direction to an upper limit position, the stop portion abuts against the stepping member to prevent further upward rotation of the stepping member.

[0032] In one of the embodiments, the first locking member is movably disposed on the sliding member and has a first guide pin; the pivoting portion of the stepping member has a first guide slot, the first guide pin extends into the first guide slot and slidingly cooperates with the first guide slot; wherein when the stepping member is rotated relative to the sliding member between the locked position and the unlocked position, the first locking member is driven to slide between the locked position and the unlocked position along a direction transverse to the sliding direction of the sliding member through the cooperation of the first guide pin and the first guide slot.

[0033] In one of the embodiments, the first locking member comprises: a sleeve, a second guide slot is arranged on the sleeve, the extension direction of the second guide slot is perpendicular to the sliding direction of the sliding member, and a first guide pin is arranged on the sleeve; a locking part, the locking part is movably arranged in the sleeve, when the first locking member is in the release position, the locking part extends into the first matching locking part and is locked with the first matching locking part; when the first locking member is in the locked position, the locking part is pulled out of the first matching locking part and is unlocked with the first matching locking part; a second guide pin, the second guide pin is connected to the locking part, and the second guide pin extends into the second guide slot and is in sliding cooperation with the second guide slot; and an elastic member, the elastic member is connected between the second guide pin and the sleeve.

[0034] In one of the embodiments, the carrier further comprises: an adjusting member, the adjusting member is movably arranged on the frame assembly and is pivotally connected with the seat assembly; and a second locking assembly, the second locking assembly is arranged between the adjusting member and the frame assembly and has a locked state and a release state; wherein, when the second locking assembly is in the locked state, the adjusting member is fixed relative to the frame assembly to limit the seat assembly to switch between the unfolded state and the folded state; when the second locking assembly is in the release state, the adjusting member is movable relative to the frame assembly to allow the seat assembly to switch between the unfolded state and the folded state.

[0035] In one of the embodiments, the second locking assembly comprises: a second locking member, the second locking member is movable relative to the frame assembly and the adjusting member and has a locked position and a release position; a second matching locking part, the second matching locking part is arranged on the adjusting member; and a third matching locking part, the third matching locking part is arranged on the frame assembly; wherein, when the second locking member is in the locked position, the second locking member is locked with the second matching locking part and the third matching locking part to limit the adjusting member to move relative to the frame assembly; when the second locking member is in the release position, the second locking member is unlocked with the third matching locking part to allow the adjusting member to move relative to the frame assembly.

[0036] In one of the embodiments, the second locking assembly further comprises: a first release member, the first release member has a locking position and an unlocking position on its moving path, and the first release member is drivingly connected with the second locking member; wherein, when the first release member is in the locking position, the second locking member is in the locked position, and when the first release member is in the unlocking position, the second locking member is in the release position.

[0037] In one of the embodiments, the second locking assembly further comprises: a first support seat arranged on the adjusting member and having a second guide portion, the extending direction of the second guide portion being perpendicular to the moving direction of the first release member; a second locking member arranged in the first support seat and capable of sliding along the extending direction of the second guide portion between the locking position and the release position through the sliding cooperation with the second guide portion, the second locking member having a third guide pin; the first release member is provided with a third guide slot extending obliquely relative to the moving direction of the first release member, the third guide pin extending into the third guide slot and slidingly cooperating with the third guide slot; when the first release member switches between the locking position and the release position, the second locking member is driven to slide along the extending direction of the second guide portion between the locking position and the release position through the cooperation of the third guide pin and the third guide slot.

[0038] In one of the embodiments, the second locking assembly further comprises: a second reset member, the second reset member providing the first release member with an elastic restoring force tending to switch the first release member to the locking position.

[0039] In one of the embodiments, the second locking assembly further comprises: a second release member arranged on the frame assembly, the second release member having a locking position and an unlocking position on its moving path, the second release member being drivingly connected with the first release member; when the second release member is at the locking position, the first release member is at the locking position, and when the second release member is at the unlocking position, the first release member is at the unlocking position; wherein the sliding of the sliding member relative to the frame assembly drives the second release member to move from the locking position to the unlocking position.

[0040] In one of the embodiments, the second locking assembly further comprises: a driving member connected to the first release member via a connecting member, the driving member being provided with a fourth guide slot extending obliquely relative to the moving direction of the second release member, the second release member having a fourth guide pin extending into the fourth guide slot and slidingly cooperating with the fourth guide slot; when the second release member switches between the locking position and the unlocking position, the driving member is driven to switch between the locking position and the unlocking position through the cooperation of the fourth guide pin and the fourth guide slot, and the first release member is driven to switch between the locking position and the unlocking position via the connecting member.

[0041] In one of the embodiments, the second locking assembly further comprises: a second support seat arranged on the frame assembly and having a third guide portion, the extending direction of the third guide portion being perpendicular to the sliding direction of the sliding member; the second release member is arranged in the second support seat and capable of sliding along the extending direction of the third guide portion between the locking position and the release position through the sliding cooperation with the third guide portion.

[0042] In one of the embodiments, the sliding member has a first pressing portion; the second release member has a first inclined surface extending obliquely relative to the sliding direction of the sliding member; wherein when the sliding member slides downward relative to the frame assembly and contacts the second release member, further downward sliding of the sliding member relative to the frame assembly causes the first pressing portion to press against the first inclined surface to drive the second release member to move from the locked position to the unlocked position.

[0043] In one of the embodiments, the sliding member has a second pressing portion; the second release member has a second inclined surface extending obliquely relative to the sliding direction of the sliding member; wherein when the sliding member slides upward relative to the frame assembly and contacts the second release member, further upward sliding of the sliding member relative to the frame assembly causes the second pressing portion to press against the second inclined surface to drive the second release member to move from the locked position to the unlocked position.

[0044] In one of the embodiments, when the carrier carries the load in the carrier, the gravity of the load drives the first locking member to press against the first locking portion to provide a frictional resistance between the first locking member and the first locking portion to prevent the first locking member and the first locking portion from being unlocked.

[0045] In one of the embodiments, the rider assembly is pivoted to the frame assembly, and the rider assembly is switchable between a locked state in which the rotation of the rider assembly relative to the frame assembly is limited and an unlocked state in which the rotation of the rider assembly relative to the frame assembly is allowed; wherein when the rider assembly is in the locked state, the movement of the rider assembly can drive the frame assembly to move. BRIEF DESCRIPTION OF DRAWINGS

[0046] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application and are incorporated herein for a purpose of explanations. The present application is explained by using the accompanying drawings and the descriptions, but should not be limited by the drawings.

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative work based on these drawings.

[0048] In addition, the drawings are not drawn in the ratio of 1:1, and the relative sizes of the various elements are only exemplarily drawn in the drawings, but not necessarily drawn in the true ratio. In the drawings:

[0049] Fig. 1 is a perspective view of a carrier in a first embodiment of the present application, wherein a seat assembly is in a first use state;

[0050] Fig. 2 is a perspective view of the carrier in the first embodiment of the present application, wherein the seat assembly is in a second use state;

[0051] Figure 3 is an exploded view of the seat assembly in the vehicle shown in Figure 1;

[0052] Figure 4 is a side view of the vehicle shown in Figure 1, in which the seat assembly is in the first use state;

[0053] Figure 5 is a side view of the vehicle shown in Figure 1, in which the seat assembly is in a transitional state between a first use state and a second use state;

[0054] Figure 6 is a side view of the vehicle shown in Figure 1, in which the seat assembly is in the second use state;

[0055] Figure 7 is a perspective view of the vehicle shown in Figure 1 from another angle, in which the seat cover is in the first folded state;

[0056] Figure 8 is a side view of the seat assembly in the vehicle shown in Figure 1 in the second use state, where the seat cover is in the first unfolded state;

[0057] Figure 9 is a side view of the seat assembly in the vehicle shown in Figure 1 when it is in the second use state, wherein the seat assembly is equipped with a small seat.

[0058] Figure 10 is a side view of the vehicle shown in Figure 1 when the seat assembly is in the second use state, wherein the seat assembly is equipped with a basket.

[0059] Figure 11 is a perspective view of the seat assembly in the vehicle shown in Figure 1 in the second use state, wherein a shelf is placed on the seat assembly;

[0060] Figure 12 is a perspective view of the vehicle shown in Figure 11 when the seat assembly and the storage panel are separated.

[0061] Figure 13 is an exploded view of the structure of the vehicle shown in Figure 2;

[0062] Figure 14 is a cross-sectional view of the vehicle shown in Figure 1, in which the locking component is in the locked state;

[0063] Figure 15 is a cross-sectional view of the vehicle shown in Figure 1, in which the locking component is in the unlocked state;

[0064] Figure 16 is a side view of the vehicle shown in Figure 2, with the driver's assembly in the second use position;

[0065] Figure 17 is a side view of the vehicle shown in Figure 2, with the driver's assembly in the third use position;

[0066] Figure 18 is a cross-sectional view of the vehicle shown in Figure 1, wherein the engaging component engages with the first limiting component;

[0067] Figure 19 is an exploded view of the locking mechanism in the vehicle shown in Figure 18.

[0068] Figure 20 is a perspective view of the carrier of the second embodiment of the application in the deployed condition and in a first use condition;

[0069] Figure 21 is a perspective view of the carrier of Figure 20 in a half- collapsed condition;

[0070] Figure 22 is a left side view of the carrier of Figure 20 in the deployed condition;

[0071] Figure 23 is a left side view of the carrier of Figure 20 in another half- collapsed condition;

[0072] Figure 24 is a left side view of the carrier of Figure 20 in a collapsed condition;

[0073] Figure 25 is a left side view of the carrier of Figure 20 in the deployed condition, with a partial cutaway view of the structure shown, and with the front and rear wheels omitted;

[0074] Figure 26 is an enlarged view of A of Figure 25;

[0075] Figure 27 is an enlarged view of B of Figure 25;

[0076] Figure 28 is an enlarged view of C of Figure 25;

[0077] Figure 29 is a perspective view of the carrier of Figure 20 from a different angle, with the slide omitted;

[0078] Figure 30 is a perspective view of the carrier of Figure 20 from a different angle, with parts of the structure associated with the first locking assembly exploded;

[0079] Figure 31 is a perspective view of the carrier of Figure 20 from a different angle, with parts of the structure associated with the second locking assembly exploded;

[0080] Figure 32 is a perspective view of the carrier of Figure 20 in the deployed condition and in a third use condition, with parts of the structure associated with the first and second locking assemblies exploded;

[0081] Figure 33 is a left side view of the carrier of Figure 20 in a first half- collapsed condition, with a partial cutaway view of the structure shown, and with the front and rear wheels omitted;

[0082] Figure 34 is an enlarged view of D of Figure 33;

[0083] Figure 35 is a left side view of the carrier of Figure 20 in a second half- collapsed condition, with a partial cutaway view of the structure shown, and with the front and rear wheels omitted;

[0084] Figure 36 is an enlarged view of E of Figure 35;

[0085] Figure 37 is a left side view of the vehicle shown in Figure 20 in a third, half- collapsed state, with a partial cutaway view of the structure shown, and with the front and rear wheels omitted;

[0086] Figure 38 is an enlarged view of area F in Figure 37;

[0087] Figure 39 is an enlarged view of area G in Figure 37;

[0088] Figure 40 is an enlarged view of area H in Figure 37;

[0089] Figure 41 is a left side view of the vehicle shown in Figure 20 in a collapsed state, with a partial cutaway view of the structure shown, and with the front and rear wheels omitted;

[0090] Figure 42 is a perspective view of the vehicle shown in Figure 20 in an expanded state and in a second, use state;

[0091] Figure 43 is a perspective view of the vehicle shown in Figure 42 in a half- collapsed state.

[0092] Reference numerals: 1000, carrier; 100, frame assembly; 110, front wheel frame; 111, front rod; 112, front cross rod; 113, front wheel seat; 114, front wheel; 115, front reinforcing rod; 120, rear wheel frame; 121, rear rod; 122, rear wheel seat; 123, rear wheel; 124, rear reinforcing rod; 125, sliding piece; 200, seat assembly; 210, surrounding frame; 211, first backrest tube; 212, second backrest tube; 213, connecting seat; 2131, first clamping part; 220, seat cloth cover; 221, bottom sheet; 222, surrounding sheet; 230A, connecting piece; 230B, matching piece; 240, seat; 241, seat part; 2411, seat tube; 242, backrest part; 2421, backrest tube; 243, clamping part; 250, armrest tube; 300, linkage mechanism; 310, first linkage piece; 320, adjusting piece; 330, locking assembly; 331, first locking piece; 332, first lock matching part; 333, second lock matching part; 3331, first lock matching hole; 3332, second lock matching hole; 334, release piece; 3341, second guide part; 3342, limiting hole; 335, support seat; 3351, first guide part; 336, guide piece; 337, first reset piece; 340, second linkage piece; 400, canopy assembly; 410, canopy support; 420, canopy cloth; 510, rear leg tube plug; 520, support tube plug; 600, basket assembly; 700, handle assembly; 710, upper handle frame; 711, first support tube; 712, push handle tube; 720, lower handle frame; 721, second support tube; 730, first limiting piece; 740, second limiting piece; 750, clamping piece; 751, sliding sleeve; 7511, second clamping part; 7512, guide part; 752, fixed plug; 753, second reset piece; 810, basket; 820, small seat; 821, cushion part; 822, backrest part; 823, first connecting part; 824, second connecting part; 830, storage board; Q1, first pivot point; Q2, second pivot point; Q3, third pivot point; Q4, fourth pivot point; Q5, fifth pivot point; W1, first limiting support point; W2, second limiting support point; V1, first fixed support point; F1, first direction.A1000, vehicle; A100, frame assembly; A110, front wheel frame; A111, front rod; A112, front cross rod; A113, front wheel seat; A114, front wheel; A115, front reinforcement rod; A120, rear wheel frame; A121, rear rod; A1211, rear rod side wall; A1212, lock hole; A122, rear wheel seat; A123, rear wheel; A124, rear reinforcement rod; A200, handle assembly; A210, support rod; A211, upper support rod; A212, lower support rod; A220, push handle rod; A300, seat assembly; A310, surrounding frame; A311, first back pipe; A312, second back pipe; A313, connecting seat; A320, seat support; A321, seat pipe; A322, back pipe; A330, armrest part; A340, canopy support; AQ1, first pivot point; AQ2, second pivot point; AQ3, third pivot point; AQ4, fourth pivot point; AQ5, fifth pivot point; A400, linkage assembly; A410, slider; A411, first guide part; A411a first guide slot; A4111a, guide side wall; A412, first pressing part; A413, second pressing part; A420, first linkage; A430, stepping part; A431, stepping sleeve; A432, stepping pipe; A433, pivot part; A4331, first guide slot; A4332, pivot center; A440, second linkage; A450, first locking assembly; A451, first locking part; A4511, first guide pin; A4512, sleeve; A45121, second guide slot; A4513, locking part; A4514, second guide pin; A4515, elastic part; A452, first lock part; A460, first reset part; A470, blocking part; A471, pivot part; A472, stop part; A500, adjusting part; A510, locking hole; A600, second locking assembly; A610, second locking part; A611, third guide pin; A620, first release part; A621, third guide slot; A630, first support seat; A631, second guide part; A631a, second guide slot; A631b, sixth guide slot; A650, second release part; A651, fourth guide pin; A652, first inclined surface; A653, second inclined surface; A660, second support seat; A670, third guide part; A670a, third guide slot; A670b, seventh guide slot; A680, driving part; A681, fourth guide slot; A690, connecting part. DETAILED DESCRIPTION

[0093] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific details described herein. Thus, the present application is not intended to be limited to the embodiments described herein and illustrated in the drawings.

[0094] Fig. 1 schematically shows a carrier 1000 according to a first embodiment of the present application, which is generally left-right symmetrical and can be used to carry a child, a pet, or goods, etc. without specific limitation. The carrier 1000 can include, for example, a frame assembly 100, a seat assembly 200, and a linkage mechanism 300. The seat assembly 200 is rotatable relative to the frame assembly 100 and has a first use state (see Fig. 1) and a second use state (see Fig. 2), and the linkage mechanism 300 is connected between the seat assembly 200 and the frame assembly 100 and is used to allow or limit the seat assembly 200 to switch between the first use state and the second use state (see the following description for details).

[0095] In the carrier 1000 described above, the seat assembly 200 is rotatable relative to the frame assembly 100 and has a first use state and a second use state, and the linkage mechanism 300 is used as a connecting component between the seat assembly 200 and the frame assembly 100 to control the switching of the seat assembly 200 between the two use states, which enhances the functionality and flexibility of the carrier 1000 to adapt to different use requirements. Specifically, since the seat assembly 200 has two use states, the use period of the carrier 1000 is significantly extended, and the utilization rate is greatly improved. For example, when a child is in the infant stage and cannot walk, the seat assembly 200 of the carrier 1000 can be in one of the use states to safely carry the child for travel; as the child grows up and no longer needs to use the carrier 1000 for travel, the seat assembly 200 of the carrier 1000 can be switched to the other use state, at which time the seat assembly 200 of the carrier 1000 can be used to carry goods or sundries, etc. This ingenious multi-functional design not only improves the practicality and applicability of the carrier 1000, but also makes the carrier 1000 have a very high utilization rate and reduces waste.

[0096] The following will describe the carrier 1000, and the frame assembly 100, the seat assembly 200, and the linkage mechanism 300 will be further described.

[0097] Referring to Figs. 1 and 2, in an embodiment, the frame assembly 100 includes a front wheel frame 110 and a rear wheel frame 120, which are pivotally connected to each other by a second pivot shaft along a front-rear direction and form a second pivot point Q2, wherein the front wheel frame 110 is located in front of the rear wheel frame 120. Specifically, the front wheel frame 110 can be generally in a U-shaped structure, for example, which includes front rod members 111 located on the left and right sides and a front cross rod 112 connected between the two front rod members 111. The front cross rod 112 is generally in a U-shaped structure and extends along the left-right direction. At least one front wheel seat 113 is mounted on the bottom of the front wheel frame 110. In this embodiment, two front wheel seats 113 are mounted on the bottom of the front wheel frame 110 and are spaced apart in the left-right direction. More specifically, the two front wheel seats 113 are generally mounted on the left and right ends of the front cross rod 112, and each of the two front wheel seats 113 is used to mount a front wheel 114, which can be a universal wheel or a non-universal wheel. Of course, in another alternative embodiment, the front wheel frame 110 can also have other implementations, for example, the front wheel frame 110 only includes two front rod members 111, one end of the two front rod members 111 is connected to form a V-shaped structure, and one front wheel seat 113 can be centrally mounted on the bottom of the front wheel frame 110. Alternatively, for example, the above-mentioned front cross rod 112 can be omitted, and the front wheel frame 110 only includes two front rod members 111 which are parallelly arranged in the left-right direction, and the two front wheel seats 113 are respectively connected with the two front rod members 111.

[0098] It should be noted that, unless otherwise explicitly specified and limited, the "front", "rear", "left", "right" and other orientation terms of the carrier 1000 in various embodiments of the present application are based on the "front", "rear", "left", "right" orientation of the carrier 1000 in normal driving, and the "front" and "rear" directions are schematically shown by arrows F and B in the drawings, and the "left" and "right" directions are schematically shown by arrows L and R. Among them, the left-right direction of the carrier 1000 can also be referred to as the transverse direction D1, and the front-rear direction of the carrier 1000 can also be referred to as the longitudinal direction D2. These orientation terms are only used to make the description of the embodiments of the present application clearer, and are not used to improperly limit the protection scope of the present application.

[0099] Continuing to refer to FIGS. 1 and 2, the rear wheel frame 120 may, for example, include two rear rod members 121 located at left and right sides, and the bottom of the rear wheel frame 120 is provided with at least one rear wheel seat 122. In the present embodiment, the bottom of the rear wheel frame 120 is provided with two rear wheel seats 122, which are respectively mounted on the two rear rod members 121 at the same side, and the two rear wheel seats 122 are respectively used for mounting the rear wheels 123, which may, for example, also be universal wheels or non-universal wheels. In the present embodiment, the size of the rear wheels 123 is greater than that of the front wheels 114, so as to make the overall structure of the carrier 1000 more stable. Of course, in another alternative embodiment, the size of the rear wheels 123 can be the same as or smaller than that of the front wheels 114.

[0100] Optionally, in another alternative embodiment, the rear wheel frame 120 can have other implementations. For example, the rear wheel frame 120 can also be substantially in a U-shaped structure, and can further include a rear cross rod (not shown in the figure) connected between the two rear rod members 121, the rear cross rod extending along the left-right direction. Alternatively, the rear wheel frame 120 can also be substantially in a V-shaped structure, one end of the two rear rod members 121 being connected to form a V-shaped structure, and the bottom of the rear wheel frame 120 can be centrally provided with a rear wheel seat 122.

[0101] Continuing to refer to FIGS. 1 and 2, in an embodiment, the front wheel frame 110 can further include a front reinforcing rod 115, and the rear wheel frame 120 can further include a rear reinforcing rod 124. The front reinforcing rod 115 is connected between the two front rod members 111 and extends along the left-right direction, and the rear reinforcing rod 124 is connected between the two rear rod members 121 and extends along the left-right direction. In this way, the structural strength of the front wheel frame 110 and the rear wheel frame 120 can be improved, thereby improving the overall structural strength of the carrier 1000, so as to make the carrier 1000 have a longer service life.

[0102] Referring to FIGS. 1 to 3, in an embodiment, the seat assembly 200 includes a surrounding frame 210. The surrounding frame 210 can be a frame type structure closed in a circumferential direction, such as a triangular frame, a rectangular frame, a pentagonal frame, etc. Specifically, in the present embodiment, the surrounding frame 210 is a rectangular frame, which can be substantially regarded as extending along the front-rear direction of the carrier 1000 when it is placed horizontally. Specifically, the surrounding frame 210 includes a first backrest tube 211, a second backrest tube 212, and a connecting seat 213, wherein the first backrest tube 211 and the second backrest tube 212 are both in a U-shaped structure, and the opening ends of the two U-shaped structures are opposite and connected through the connecting seat 213.

[0103] In the present embodiment, as can be known from the foregoing, the seat assembly 200 is capable of rotating relative to the frame assembly 100 to switch between the first use state and the second use state. Specifically, as shown in FIG. 1, FIG. 4 and FIG. 5, when the seat assembly 200 is in the first use state, the surrounding frame 210 can be considered to be arranged at an angle with the horizontal plane, and the angle therebetween is an acute angle. As shown in FIG. 2 and FIG. 6, when the seat assembly 200 is in the second use state, the surrounding frame 210 can be considered to be arranged parallel to the horizontal plane.

[0104] Referring to FIG. 8 and FIG. 9, in an embodiment, the seat assembly 200 further comprises a seat cloth cover 220, which is sleeved on the surrounding frame 210. Specifically, the seat cloth cover 220 comprises a bottom sheet 221 and surrounding sheets 222 extending away from the bottom sheet 221 from the circumferential edges of the bottom sheet 221. Among them, the shape of the bottom sheet 221 is matched with the shape of the surrounding frame 210, which is rectangular, and the surrounding sheet 222 has four, four surrounding sheets 222 are respectively located at the four circumferences of the bottom sheet 221, and the adjacent two surrounding sheets 222 are connected, and the end parts of the four surrounding sheets 222 away from the bottom sheet 221 are respectively connected with the four edges of the surrounding frame 210. In an embodiment, the four surrounding sheets 222 and the four circumferences of the bottom sheet 221 can be connected by sewing, for example, the adjacent two surrounding sheets 222 can also be connected by sewing, and the end parts of the four surrounding sheets 222 away from the bottom sheet 221 can be connected with the surrounding frame 210 by sewing. Of course, in other embodiments, the surrounding sheet 222 and the bottom sheet 221, the adjacent surrounding sheets 222, and the surrounding sheet 222 and the surrounding frame 210 can also be connected by a plurality of pairs of magic tape, a plurality of pairs of snap, etc., which are not limited here.

[0105] In an embodiment, the bottom sheet 221 can be made of at least one of a woven cloth, a mesh cloth, and the like, and of course, the surrounding sheets 222 can also be made of at least one of a woven cloth, a mesh cloth, and the like. The material of the bottom sheet 221 can be the same as that of the surrounding sheets 222, or can be different, which is not specifically limited herein. Specifically, in the present embodiment, the seat cloth cover 220 has a first unfolded state and a first folded state as a whole. As shown in FIGS. 8 and 9, when the seat cloth cover 220 is in the first unfolded state, the bottom sheet 221 and the surrounding sheets 222 are both in a natural relaxed state, the bottom sheet 221 and the four surrounding sheets 222 around the bottom sheet 221 can define a carrying space, the surrounding sheets 222 and the bottom sheet 221 form the side walls and the bottom wall of the carrying space, respectively, the carrying space can be used to carry a child, a pet, or goods, and the like, and the surrounding frame 210 forms an opening of the carrying space. When the seat cloth cover 220 is in the first folded state, the bottom sheet 221 is connected to the surrounding frame 210, and the bottom sheet 221 and the surrounding sheets 222 are both in a pressed and folded state, at this time, the space of the carrying space is reduced. Specifically, please refer to FIGS. 6 and 7, the bottom sheet 221 is provided with a connecting piece 230A, the surrounding frame 210 is provided with a matching piece 230B, the connecting piece 230A and the matching piece 230B can be locked and matched with each other by means of, but not limited to, clamping, bonding, and the like, to form a limiting support point, so that the bottom sheet 221 can be connected to the surrounding frame 210. When the connecting piece 230A and the matching piece 230B are disconnected, the bottom sheet 221 and the surrounding sheets 222 can be stretched to relax under the action of gravity, so that the seat cloth cover 220 resets to the first unfolded state, at this time, the carrying space is in a cubic shape. In the present embodiment, as shown in FIG. 7, the connecting piece 230A can include a pair of buckles and a connecting band, for example, the matching piece 230B can include a sleeve ring, wherein one buckle is arranged on the bottom sheet 221, the first end of the connecting band is connected to the bottom sheet 221, and the second end is provided with another buckle. When the seat cloth cover 220 is folded as a whole and needs to be kept in the first folded state, the second end of the connecting band can be inserted through the sleeve ring, and then the buckles of the connecting band and the bottom sheet 221 are buckled with each other. Of course, in other embodiments, the above buckles can be omitted, the connecting piece 230A can only include the connecting band, the first end of the connecting band is sewn to the bottom sheet 221, and the second end is inserted through the sleeve ring and wound with the first end to form a buckle. It should be noted that a plurality of connecting pieces 230A can be arranged on the bottom sheet 221, and a plurality of matching pieces 230B can also be arranged on the surrounding frame 210, and the number of the connecting pieces 230A and the matching pieces 230B is not specifically limited and can be set according to requirements.

[0106] Please refer to Figs. 1 and 3 again, in an embodiment, the seat assembly 200 can further comprise a seat 240, which is detachably connected to the connecting seat 213 of the surrounding frame 210. Specifically, the seat 240 comprises a seat part 241, which can be used to support the buttocks of a child for example, and a backrest part 242, which can be used to support the back of a child, and the seat part 241 and the backrest part 242 are pivotally connected to each other so that the seat 240 has a sitting state (see Figs. 1 and 3) and a lying state (see Figs. 8 and 9). When the seat 240 is in the sitting state, the seat part 241 and the backrest part 242 are arranged at an angle. When the seat 240 is in the lying state, the seat part 241 and the backrest part 242 are substantially horizontally connected and are in the same plane.

[0107] In an embodiment, as shown in Fig. 3, the seat part 241 can comprise a seat tube 2411 and a seat plate (not shown in the figure), and the backrest part 242 can comprise a backrest tube 2421 and a backrest plate (not shown in the figure). Among them, the seat tube 2411 and the backrest tube 2421 are pivotally connected, the seat plate and the backrest plate are rotatably connected and arranged between the seat tube 2411 and the backrest tube 2421, the seat plate is used to support the buttocks of a child, and the backrest plate is used to support the back of a child. It should be noted that the seat plate can be mounted on the seat tube 2411, and the backrest plate can be mounted on the backrest tube 2421, so that the seat plate can rotate relative to the backrest plate when the seat tube 2411 pivots relative to the backrest tube 2421. Of course, in other embodiments, the backrest tube 2421 can also be omitted, and the backrest plate is directly pivotally connected with the seat plate, which is not specifically limited here.

[0108] Please continue to refer to Figs. 1 and 3, in an embodiment, when the seat 240 is mounted on the surrounding frame 210, the seat 240 is substantially located inside the seat cover 220, i.e. in the carrying space. Specifically, the seat 240 is provided with a clamping part 243, and the connecting seat 213 is provided with a first clamping part 2131, and the two can be clamped or unclamped with each other. When the clamping part 243 and the first clamping part 2131 are clamped, the seat 240 is stably connected to the connecting seat 213 of the surrounding frame 210, and the clamping part 243 and the first clamping part 2131 form a first fixed support point V1; when the clamping part 243 and the first clamping part 2131 are unclamped, the seat 240 can be removed from the connecting seat 213 of the surrounding frame 210. Specifically, one of the clamping part 243 and the first clamping part 2131 is a convex structure, and the other is a concave structure, and the two are matched in concave-convex clamping. Of course, in other embodiments, the seat 240 can be detachably connected to the connecting seat 213 of the surrounding frame 210 through a connecting piece 230A such as a screw or a bolt, which is not specifically limited here.

[0109] It should be noted that in some embodiments, the seat 240 and the seat cloth cover 220 can be two independent components, and the seat 240 and the seat cloth cover 220 are not connected. Therefore, when the seat cloth cover 220 is switched between the first unfolded state and the first folded state, the seat cloth cover 220 does not affect the state change of the seat 240. Of course, in other embodiments, the seat 240 and the seat cloth cover 220 can be connected, and at least part of the structures of the seat 240 and the seat cloth cover 220 overlap each other; or the seat 240 and the seat cloth cover 220 can be considered as an integrated structure. For example, the seat 240 can be connected with the bottom sheet 221, and the seat 240 can be stacked with the bottom sheet 221; or the seat 240 and the bottom sheet 221 can be integrally formed, and at this time, the seat 240 can be considered as the bottom sheet 221. Therefore, in this case, the state switching of the seat cloth cover 220 and the state switching of the seat 240 are synchronous (for details, see the following description), that is, when the seat cloth cover 220 is switched between the first unfolded state and the first folded state, the seat 240 is switched between the lying state and the sitting state. Specifically, when the seat cloth cover 220 is in the first folded state, the seat 240 corresponds to the sitting state; when the seat cloth cover 220 is in the first unfolded state, the seat 240 corresponds to the lying state.

[0110] Please combine FIG. 1 and FIG. 4, in the first use state, the surrounding frame 210 is inclined relative to the ground, the opening of the carrying space is directed to the front of the traveling direction of the carrier 1000, the seat 240 is installed on the connecting seat 213 and is in the sitting state, and the included angle between the seat part 241 and the backrest part 242 is also generally directed to the front. At this time, the child can sit on the seat 240 to move with the vehicle frame assembly 100, and at this time, the carrier 1000 can be used as a child stroller. It should be noted that when the seat assembly 200 is in the first use state, the seat cloth cover 220 is usually folded and kept in the first folded state (see FIG. 7), so that the overall structure of the carrier 1000 is relatively simple, and at the same time, the seat cloth cover 220 can be prevented from being randomly spread to interfere with the user driving the vehicle frame assembly 100 to move.

[0111] Please combine FIG. 2 and FIG. 6, when the seat assembly 200 is in the second use state, the surrounding frame 210 is horizontally arranged, and the opening of the carrying space is directed upward. At this time, the user operates the connecting part 230A and the cooperating part 230B (see FIG. 7) to make the connecting part 230A and the cooperating part 230B disengage, and the bottom sheet 221 and the surrounding sheet 222 are stretched under the action of gravity to reset the seat cloth cover 220 to the first unfolded state (switched from FIG. 7 to FIG. 6). It should be noted that before the seat assembly 200 is adjusted to the second use state, the seat 240 needs to be removed from the connecting seat 213 to prevent the seat 240 from dividing the carrying space and reducing the space utilization.

[0112] According to the foregoing, the seat 240 and the seat cloth cover 220 have two states: one is that the seat 240 and the seat cloth cover 220 are independent of each other; the other is that the seat 240 and the seat cloth cover 220 are connected or integrally formed. The switching process of the seat assembly 200 between the first use state and the second use state will be briefly described below based on the above two cases.

[0113] Please combine FIG. 1, FIG. 4, FIG. 7 and FIG. 8, in the case that the seat 240 and the seat cloth cover 220 are two independent components, when the seat assembly 200 is switched from the first use state to the second use state, the surrounding frame 210 can be rotated first to make the surrounding frame 210 parallel to the ground, at the same time, the connecting piece 230A and the matching piece 230B are unlocked to make the seat cloth cover 220 switch to the first unfolded state; then, the seat 240 is detached from the connecting seat 213 of the surrounding frame 210, and the backrest part 242 of the seat 240 is rotated to make the seat 240 in a lying state (i.e. the backrest part 242 and the seat part 241 are roughly in the same plane), and finally the seat 240 is placed in the carrying space and laid on the bottom sheet 221 (see FIG. 8), at this time, the carrying space can also be regarded as the storage space of the seat 240, so that the problem of easy loss after disassembly of the seat 240 can be prevented; at the same time, the seat 240 laid on the bottom sheet 221 can enhance the structural strength of the bottom sheet 221, and the seat cloth cover 220 is not easy to deform and can stably support children or sundries when the carrying space carries children or sundries. Of course, the disassembled seat 240 can also be directly placed in the basket assembly 600 (the specific structure is described later) of the vehicle 1000, which is not limited here. It should be noted that in FIG. 8, the seat 240 is not visible from the outside of the seat cloth cover 220 when the seat 240 is placed in the carrying space, but in order to clearly understand the placement position and state of the seat 240, the seat 240 shown in FIG. 8 is shown by a dashed line. When the seat assembly 200 is switched from the second use state to the first use state, the seat 240 can be taken out from the carrying space or the basket assembly 600 and the inclination angle of the backrest part 242 relative to the seat part 241 is adjusted to make the seat 240 adjusted to a sitting state; then, the seat cloth cover 220 is folded and locked by the connecting piece 230A and the matching piece to make the seat cloth cover 220 remain in the first folded state, at the same time, the surrounding frame 210 is rotated to make the surrounding frame 210 inclined relative to the ground, and finally the seat 240 is installed to the connecting seat 213 of the surrounding frame 210 for carrying children. It should be noted that the order of the above operation steps can be adjusted according to the actual situation, which is not limited here.

[0114] In the present embodiment, the seat portion 241 is provided with a connector 230A at the end portion adjacent to the backrest portion 242, which can be locked with a cooperating connector 230B on the surrounding frame to form a first limiting support point W1 (see FIG. 7). Similarly, the backrest portion 242 is also provided with a connector 230A at the end portion adjacent to the seat portion 241, which can be locked with another cooperating connector 230B (not shown in FIG. 1) on the surrounding frame 210 to form a second limiting support point W2 (see FIG. 1). Please refer to FIGS. 1, 3 and 7, when the seat assembly 200 is in the first use state, the surrounding frame 210 is inclined relative to the ground and faces forward, at this time, the seat 240 is fixed by the clamping portion 243 and the first clamping portion 2131 cooperating with the connecting seat 213, and the backrest portion 242 and the seat portion 241 of the seat 240 are connected with the surrounding frame 210 through the corresponding connectors 230A and cooperating connectors 230B, respectively, so that the seat cloth cover 220 is kept in the first folded state. At this time, the seat portion 241 is kept stationary under the action of the first limiting support point W1 and the first fixed support point V1, and the backrest portion 242 is kept stationary under the action of the second limiting support point W2 and the first fixed point, so that the seat 240 can be stably kept in a sitting position. When the seat assembly 200 is switched from the first use state to the second use state, similarly, the surrounding frame 210 is rotated so that the surrounding frame 210 is parallel to the ground, then the clamping portion 243 of the seat 240 is detached from the first clamping portion 2131 of the connecting seat 213, at the same time, the connectors 230A of the backrest portion 242 and the seat portion 241 are unlocked with the corresponding cooperating connectors 230B, and the backrest portion 242 and the seat portion 241 are rotated so that the backrest portion 242 and the seat portion 241 are substantially in the same horizontal plane to evolve into the bottom sheet 221 of the seat cloth cover 220 (see FIG. 9). The seat portion 241 and the backrest portion 242 (at this time, they can be regarded as the bottom sheet 221) pull the surrounding sheet 222 to stretch under the action of gravity, so that the seat cloth cover 220 is switched to the first unfolded state (switched from FIG. 7 to FIG. 6). In this process, the seat cloth cover 220 is switched from the first folded state to the first unfolded state, and at the same time, the seat 240 is also switched from the sitting position to the lying position, and the seat 240 gradually evolves into the bottom sheet 221 (i.e. the bottom wall of the bearing space).When the seat assembly 200 is switched from the second use state to the first use state, the clamping portion 243 of the seat 240 is first clamped with the first clamping portion 2131 of the connecting seat 213, and then the backrest portion 242 and / or the seat portion 241 of the seat 240 is rotated, and the connecting member 230A at the backrest portion 242 is locked with the corresponding matching member 230B of the surrounding frame 210, and at the same time, the connecting member 230A at the seat portion 241 is locked with the corresponding matching member 230B of the surrounding frame 210, so that the seat cloth cover 220 is switched to the first folding state, and the seat 240 is switched to the sitting state. During the process, the bottom sheet 221 of the seat cloth cover 220 gradually evolves into the seat 240. It should be noted that the order of the above-mentioned operation steps can be adjusted according to actual conditions, and is not specifically limited here.

[0115] It should be noted that, as shown in FIG. 1, when the seat assembly 200 is in the first use state, the seat 240 remains in the sitting state, at which time the carrier 1000 can be used as a stroller. In this state, the carrier 1000 provides a safe and comfortable riding environment for the baby, making it easy for parents to take their children out. As shown in FIG. 6, when the seat assembly 200 is in the second use state, the seat assembly 200 is placed horizontally, the seat 240 is removed or kept in a lying state, and the seat cloth cover 220 is in the first unfolded state. At this time, the carrier 1000 is transformed into a facility with a carrying space suitable for children to lie down and rest, or for loading goods and sundries, etc. In this state, the carrier 1000 is more versatile, i.e., it can be used as a cradle to provide a comfortable resting space for children, or as a goods cart to help parents carry various items. It should be emphasized that when the seat assembly 200 is in the second use state, the carrier 1000 is not limited to the above-mentioned cases. For example, a small seat 820 (see FIG. 9) can be hung at the opening of the surrounding frame 210 (i.e., the opening of the carrying space), or a basket 810 (see FIG. 10) can be horizontally clamped for children to ride; or a storage board 830 can be placed at the opening of the surrounding frame 210 to make the carrier 1000 into a table (see FIGS. 11 and 12), which further expands the functionality and use of the carrier 1000. As can be seen from the above, the carrier 1000 has a seat assembly 200 with two use states, which is highly functional, flexible and adaptable, fully meeting the modern family's pursuit of multifunctional and efficient furniture. It not only prolongs its own use period and improves its utilization rate, but also brings great convenience to family life, reduces the replacement of furniture due to the growth of children, and realizes the dual advantages of economy and practicality.

[0116] In one embodiment, the seat assembly 200 further comprises an armrest tube 250 (see FIGS. 1 and 2) which is in a U-shaped structure and detachably connected to the connecting seats 213 on the left and right sides of the surrounding frame 210. When the seat assembly 200 is in the first use state, the child sitting on the seat 240 can rest his arms on the armrest tube 250, which not only improves the comfort of the ride, but also limits the child's ride space and prevents the child from falling off the seat 240. When the seat assembly 200 is in the second use state, the armrest tube 250 can be removed, so that the user can avoid interference with the armrest tube 250 when taking or placing items in the seat assembly 200. In one embodiment, the surrounding frame 210 further comprises a tray (not shown in the figure) which is detachably connected between the left and right connecting seats 213, for example, at the armrest tube 250. The tray can be used to place tableware, a water cup, snacks, etc., to facilitate the child to eat. Similarly, when the seat assembly 200 is in the second use state, the tray can be removed.

[0117] It should be noted that when the seat assembly 200 is in the second use state, the armrest tube 250 or the tray can also not be removed. For example, when a basket 810 is horizontally clamped at the opening of the surrounding frame 210, the front side and the left and right sides of the basket 810 are clamped with the surrounding frame 210, and the rear side of the basket 810 can be clamped with the armrest tube 250 or the tray, for example, so that the stability of the basket 810 clamped on the seat assembly 200 can be improved. Of course, in other embodiments, the rear side of the basket 810 can also be clamped with a connector (such as an Adaptor connector, not shown in the figure) provided on the surrounding frame 210, which is not specifically limited here. It should be noted that, as shown in FIG. 9, the above-mentioned small seat 820 can comprise a seat cushion part 821, a backrest part 822, a first connecting part 823 and a second connecting part 824, for example. The seat cushion part 821 and the backrest part 822 are arranged at an angle, the first connecting part 823 is located on the left side of the seat cushion part 821 and connects the seat cushion part 821 and the backrest part 822, and the second connecting part 824 is located on the right side of the seat cushion part 821 and connects the seat cushion part 821 and the backrest part 242. Specifically, the areas of the first connecting part 823 and the second connecting part 824 away from the seat cushion part 821 are in a hook shape, and the first connecting part 823 and the second connecting part 824 can be hung on the left and right sides of the surrounding frame 210, respectively, through the corresponding hooks.

[0118] In an embodiment, the vehicle 1000 can further comprise a canopy assembly 400 mounted to the seat assembly 200 and having a second unfolded state (see FIG. 6) and a second folded state (see FIG. 8). The canopy assembly 400 can comprise a canopy support 410 and a canopy cloth 420 connected to the canopy support 410. When the canopy assembly 400 is in the second unfolded state, the canopy assembly 400 is unfolded to shield part of the opening of the carrying space for sunshade or rain protection. When the canopy assembly 400 is in the second folded state, the opening of the carrying space is fully exposed so that the user can quickly put in or take out articles through the opening. It should be noted that in the present embodiment, regardless of whether the seat assembly 200 is in the first use state or the second use state, the canopy assembly 400 can be selectively in the second folded state or the second unfolded state according to the actual needs of the user.

[0119] According to the foregoing, the linkage mechanism 300 can restrict or allow the seat assembly 200 to switch between the first use state and the second use state. The specific structure and working principle of the linkage mechanism 300 will be described below in conjunction with the relevant drawings.

[0120] Please refer to FIGS. 1, 2 and 13, in an embodiment, the linkage mechanism 300 comprises a first linkage member 310, an adjusting member 320 and a locking assembly 330. The first linkage member 310 is pivotally connected between the seat assembly 200 and the vehicle frame assembly 100. The adjusting member 320 is movably arranged on the vehicle frame assembly 100 and pivotally connected with the seat assembly 200. The locking assembly 330 is arranged between the adjusting member 320 and the vehicle frame assembly 100 and is adapted to restrict or allow the movement of the adjusting member 320 relative to the vehicle frame assembly 100. It should be noted that the pivot connection of the first linkage member 310 with the vehicle frame assembly 100 includes two embodiments: one is that the first linkage member 310 is pivotally connected with the rear wheel frame 120; the other is that the first linkage member 310 is pivotally connected with the front wheel frame 110. The movably arrangement of the adjusting member 320 on the vehicle frame assembly 100 also includes two embodiments: one is that the adjusting member 320 is movably arranged on the rear wheel frame 120; the other is that the adjusting member 320 is movably arranged on the front wheel frame 110. Specifically, in the present embodiment, the first linkage member 310 is pivotally connected with the rear wheel frame 120, and the adjusting member 320 is movably arranged on the rear wheel frame 120.

[0121] Please continue to combine Figure 1, Figure 2 and Figure 13, in an embodiment, the rear wheel frame 120 is provided with a sliding member 125, which is slidingly sleeved on the rear wheel frame 120. More specifically, the inside of the sliding member 125 is provided with a second locking member (not shown in the figure), which is used to limit the sliding of the sliding member 125 relative to the rear wheel frame 120. In this embodiment, the first connecting member 310 is a rod structure, one end of which is pivotally connected to the connecting seat 213 of the surrounding frame 210 through a third pivot shaft and forms a third pivot point Q3, and the other end is pivotally connected to the sliding member 125 of the rear wheel frame 120 through a fourth pivot shaft and forms a fourth pivot point Q4. The adjusting member 320 is a rod structure, one end of which is pivotally connected to the surrounding frame 210 through a fifth pivot shaft and forms a fifth pivot point Q5, and the other end can be slidingly sleeved with the rear rod member 121 of the rear wheel frame 120, so that the adjusting member 320 can slide relative to the rear wheel frame 120, and the adjusting member 320 and the rear rod member 121 form an extension structure. When the adjusting member 320 moves relative to the rear rod member 121, the adjusting member 320 can drive the surrounding frame 210 to pivot around the fifth pivot point Q5 (or the fifth pivot shaft), so that the seat assembly 200 can be switched between the first use state and the second use state. It should be noted that the adjusting member 320 can be sleeved outside the rear rod member 121, of course, the rear rod member 121 can also be sleeved outside the adjusting member 320. Specifically, in this embodiment, the adjusting member 320 is slidingly arranged in the rear rod member 121, and a rear leg pipe plug 510 is arranged between the adjusting member 320 and the rear rod member 121, so that the adjusting member 320 can slide more smoothly relative to the rear rod member 121.

[0122] Referring to Figure 14 and Figure 15, in this embodiment, the locking assembly 330 has a locked state and a released state. Specifically, as shown in Figure 1 and Figure 15, when the locking assembly 330 is in the released state, the adjusting member 320 can move relative to the frame assembly 100, that is, the adjusting member 320 can slide relative to the rear rod member 121, so that the adjusting member 320 can drive the seat assembly 200 to rotate around the fifth pivot point Q5 (or the fifth pivot shaft), and at the same time, the seat assembly 200 will also rotate around the third pivot point Q3 (or the third pivot shaft), so that the seat assembly 200 can be switched between the first use state and the second use state. As shown in Figure 1 and Figure 14, when the locking assembly 330 is in the locked state, the adjusting member 320 is fixed relative to the frame assembly 100, that is, the adjusting member 320 cannot slide relative to the rear rod member 121, at this time, the seat assembly 200 cannot rotate around the fifth pivot point Q5 (or the fifth pivot shaft) and the third pivot point Q3 (or the third pivot shaft), so that the seat assembly 200 can be limited to switch between the first use state and the second use state, in other words, the seat assembly 200 can be kept in the first use state or the second use state.

[0123] Referring to FIGS. 2, 13-15, in an embodiment, the locking assembly 330 includes a first locking member 331, a first locking portion 332, and a second locking portion 333. The first locking member 331 is movable relative to the frame assembly 100 and the adjusting member 320 and has a locked position and an unlocked position. Specifically, the first locking portion 332 is provided on the adjusting member 320, and the second locking portion 333 is provided on the seat assembly 200. When the first locking member 331 is in the locked position, the first locking member 331 is locked with the first locking portion 332 and the second locking portion 333, so that the movement of the adjusting member 320 relative to the frame assembly 100 (specifically, the rear rod member 121) is limited, thereby limiting the switching of the seat assembly 200 between the first use state and the second use state. When the first locking member 331 is in the unlocked position, the first locking member 331 retreats from the second locking portion 333 to release the locking of the second locking portion 333, at this time, the adjusting member 320 can move relative to the frame assembly 100 (specifically, the rear rod member 121), and then the adjusting member 320 can drive the seat assembly 200 to switch between the first use state and the second use state.

[0124] In an embodiment, as shown in FIG. 13, the first locking portion 332 is a slot structure provided on the adjusting member 320, and the second locking portion 333 is a slot structure provided on the rear rod member 121. Specifically, the first locking portion 332 includes a locking hole, and the second locking portion 333 includes a first locking hole 3331 and a second locking hole 3332. When the first locking member 331 is locked with the first locking hole 3331 by passing through the locking hole, the seat assembly 200 corresponds to the first use state. When the first locking member 331 is locked with the second locking hole 3332 by passing through the locking hole, the seat assembly 200 corresponds to the second use state. Specifically, in this embodiment, the second locking hole 3332 is located above the first locking hole 3331 along the length direction of the rear rod member 121, and the first locking hole 3331 is closer to the rear wheel 123 relative to the second locking hole 3332.

[0125] In this embodiment, as shown in FIG. 13, the first locking hole 3331 can be provided in plurality, and the plurality of first locking holes 3331 are arranged at intervals along the length direction of the rear rod member 121. When the first locking member 331 is inserted into different first locking holes 3331 by passing through the locking hole, the inclination angle of the surrounding frame 210 relative to the ground is different (see FIGS. 4 and 5), so that the inclination angle of the seat 240 mounted on the surrounding frame 210 relative to the ground can be adjusted to improve the comfort of the child.

[0126] Please refer to FIG. 2, FIG. 13 to FIG. 15, in order to facilitate the user to control the position of the first locking member 331, in an embodiment, the locking assembly 330 further comprises a release member 334, which is movably arranged on the adjusting member 320, and the release member 334 has a locking position and an unlocking position on its moving path. Specifically, the release member 334 is operatively connected with the first locking member 331, when the release member 334 is in the locking position, the first locking member 331 is in the locking position; when the release member 334 is in the unlocking position, the first locking member 331 is in the release position. In this embodiment, the adjusting member 320 is a hollow tubular structure, the release member 334 is movably arranged inside the adjusting member 320, and a support tube plug 520 is arranged between the adjusting member 320 and the release member 334, so that the release member 334 can slide more smoothly relative to the adjusting member 320. More specifically, in this embodiment, the moving direction of the release member 334 is the same as the length direction of the adjusting member 320.

[0127] Please refer to FIG. 13 to FIG. 15, in an embodiment, the locking assembly 330 further comprises a support seat 335 and a guide member 336. Specifically, the support seat 335 is arranged on the adjusting member 320 and has a first guide portion 3351, the extending direction of the first guide portion 3351 is perpendicular to the moving direction of the release member 334, the first locking member 331 is movably arranged on the support seat 335, and the guide member 336 passes through the first locking member 331 and extends into the first guide portion 3351. More specifically, the release member 334 is provided with a second guide portion 3341, the second guide portion 3341 extends obliquely relative to the moving direction of the release member 334, and the guide member 336 can extend into the second guide portion 3341 and slide with the second guide portion 3341. When the release member 334 switches between the locking position and the unlocking position, through the cooperation of the guide member 336 with the first guide portion 3351 and the second guide portion 3341, the first locking member 331 can switch between the locking position and the release position. Of course, in other embodiments, the above-mentioned first locking member 331 and the guide member 336 can be integrally formed, and the guide member 336 can be regarded as a component part of the first locking member 331, which is mainly used to pass through the first guide portion 3351 and the second guide portion 3341 to guide the first locking member 331 to switch between the locking position and the release position. It should be noted that in this embodiment, the first guide portion 3351 and the second guide portion 3341 are both through hole structures.

[0128] Please continue to refer to FIG. 13 to FIG. 15, in an embodiment, the release member 334 is provided with a limiting hole 3342 at one end away from the second guide portion 3341, the limiting hole 3342 is generally a waist-shaped hole or a strip-shaped hole, and the extending direction of the limiting hole 3342 is parallel to the moving direction of the release member 334. The fifth pivot shaft is arranged in the limiting hole 3342, so that the path length of the release member 334 when moving relative to the adjusting member 320 can be limited. In addition, the fifth pivot shaft can also avoid limiting the release sliding of the release member 334.

[0129] In an embodiment, as shown in FIG. 13, the locking assembly 330 can also include a first reset member 337, for example, the first reset member 337 can be a spring, a spring sheet or other elastic member, which is used to provide elastic restoring force for the release member 334, so that the first locking member 331 can be kept in the locking position.

[0130] Please refer to FIG. 1, FIG. 2 and FIG. 4, in an embodiment, the linkage mechanism 300 can also include a second linkage member 340, the second linkage member 340 is pivotally connected between the front frame 110 and the rear frame 120, specifically, the second linkage member 340 is pivotally connected between the front rod member 111 and the sliding member 125 of the rear rod member 121. When the frame assembly 100 is switched between the unfolded state and the folded state, the sliding member 125 can slide on the rear rod member 121, and the sliding member 125 can drive the front frame 110 to pivot around the second pivot point Q2 to approach or move away from the rear frame 120 through the second linkage member 340.

[0131] In an embodiment, the carrier 1000 can also include a basket assembly 600 (see FIG. 1 and FIG. 7), the basket assembly 600 is movably arranged on the sliding member 125 and has a third unfolded state and a third folded state. When the basket assembly 600 is in the third unfolded state, it can be used to load daily necessities, such as a water cup, a paper towel and the like. When the basket assembly 600 is in the third folded state, the overall volume of the carrier 1000 can be reduced, which is convenient for storage and transportation.

[0132] FIG. 4 to FIG. 6 show the switching process of the seat assembly 200 between the first use state and the second use state through the linkage mechanism 300. Among them, the seat assembly 200 in FIG. 4 is in the first use state; the seat assembly 200 in FIG. 5 is in a transition state between the first use state and the second use state, or the seat assembly 200 in FIG. 5 can also be regarded as being in the first use state, but the inclination angle of the surrounding frame 210 in FIG. 5 is different from that in the seat assembly 200 shown in FIG. 4; the seat assembly 200 in FIG. 6 is in the second use state.

[0133] Please refer to FIGS. 4-6 and 13-15. Specifically, when it is needed to change the use state of the seat assembly 200, the release 334 is operated (e.g. pressed) to move relative to the adjusting member 320, and under the guidance of the first guide 3351 and the second guide 3341, the first lock 331 is switched from the locking position to the releasing position (switched from FIG. 14 to FIG. 15). In this way, the adjusting member 320 can move relative to the rear rod 121 of the rear frame 120, and in turn, the adjusting member 320 can drive the seat assembly 200 to rotate around the third pivot point Q3 and the fifth pivot point Q5 to switch the seat assembly 200 between the first use state and the second use state. For example, when the seat assembly 200 is in the first use state, and the release 334 is operated to drive the first lock 331 to the releasing position, the user can drive the adjusting member 320 to extend outward relative to the rear rod 121 (switched from FIG. 4 to FIGS. 5 and 6 in sequence), and in this way, the adjusting member 320 can push the surrounding frame 210 to rotate clockwise around the fifth pivot point Q5, and in this process, the surrounding frame 210 rotates clockwise around the third pivot point Q3 relative to the first linkage 310. When the seat assembly 200 rotates to the second use state, the release 334 is released, and the release 334 is automatically reset to the locking position under the action of the first reset 337, and at the same time, the release 334 drives the first lock 331 to reset to the locking position, i.e. the first lock 331 is locked with the second lock hole 3332 to limit the movement of the adjusting member 320 relative to the rear rod 121 of the rear frame 120. For another example, when the seat assembly 200 is in the second use state, and the release 334 is operated to drive the first lock 331 to the releasing position, the user can drive the adjusting member 320 to retract inward relative to the rear rod 121 (switched from FIG. 6 to FIGS. 5 and 4 in sequence), and in this way, the adjusting member 320 can pull the surrounding frame 210 to rotate counterclockwise around the fifth pivot point Q5. Similarly, in this process, the surrounding frame 210 rotates counterclockwise around the third pivot point Q3 relative to the first linkage 310. When the seat assembly 200 rotates to the first use state, the release 334 is released, and the release 334 is automatically reset to the locking position under the action of the first reset 337, and at the same time, the release 334 drives the first lock 331 to reset to the locking position, i.e. the first lock 331 is locked with the first lock hole 3331 to limit the movement of the adjusting member 320 relative to the rear rod 121 of the rear frame 120.

[0134] Please refer to FIG. 1 and FIG. 2 again, in an embodiment, the carrier 1000 can further comprise a handle assembly 700, which is pivotally connected to the frame assembly 100. The handle assembly 700 can comprise an upper handle frame 710 and a lower handle frame 720, for example, wherein the bottom of the upper handle frame 710 is connected to the top of the lower handle frame 720, the top of the upper handle frame 710 is used for a user to hold to push or pull the frame assembly 100, the bottom of the lower handle frame 720 is pivotally connected to the frame assembly 100, the handle assembly 700 has different use positions relative to the frame assembly 100, thereby making the carrier 1000 as a whole have different use modes, such as a stroller mode, a trailer mode or a bassinet mode (the specific principle can be referred to later). Specifically, the upper handle frame 710 can move relative to the lower handle frame 720. However, it should be noted that "the upper handle frame 710 can move relative to the lower handle frame 720" includes but is not limited to that the upper handle frame 710 can pivot relative to the lower handle frame 720, so that the handle assembly 700 can be folded, thereby reducing the size of the carrier 1000; or the upper handle frame 710 can move relative to the lower handle frame 720, so that the length (or height) of the handle assembly 700 is adjustable, thereby adapting to users of different heights to hold, improving the applicability of the carrier 1000. More specifically, in the embodiment, the upper handle frame 710 can be slidably sleeved with the lower handle frame 720, so that the length (or height) of the handle assembly 700 is adjustable. Of course, in other embodiments, the upper handle frame 710 and the lower handle frame 720 can also be fixedly connected, or they can be integrally formed, which is not limited here.

[0135] In an embodiment, as shown in FIG. 1 and FIG. 2, the upper handle frame 710 has a U-shaped structure, which comprises two first support tubes 711 arranged along the left-right direction and a pushing handle tube 712 connected between the two first support tubes 711. The first support tube 711 is a straight tube, and the pushing handle tube 712 has a U-shaped structure and is connected between the two first support tubes 711, which is used for a user to hold to push the carrier 1000. The lower handle frame 720 comprises two second support tubes 721 arranged along the left-right direction, for example, the upper ends of the two second support tubes 721 are slidably sleeved with the same side first support tube 711 respectively, and the lower ends of the two second support tubes 721 can be pivotally connected to the two ends of the front cross rod 112, for example; or the lower ends of the two second support tubes 721 can be pivotally connected to the same side front rod member 111 or rear rod member 121. Specifically, in the embodiment, the lower ends of the two second support tubes 721 are pivotally connected to the two ends of the front cross rod 112 through the first pivot shaft to form the first pivot point Q1.

[0136] The following will take the lower handle frame 720 pivotally connected to the front wheel frame 110 as an example to simply describe the different use positions of the handle assembly 700 relative to the frame assembly 100 when pivoted.

[0137] In the present embodiment, the rider assembly 700 is pivoted relative to the front frame 110 to have a first use position, a second use position and a third use position relative to the frame assembly 100. Specifically, as shown in Fig. 4, when the rider assembly 700 is in the first use position, the rider assembly 700 is disposed at an angle with respect to the horizontal plane, and the top of the rider assembly 700 is located at the first side of the frame assembly 100. At this time, when the seat assembly 200 is in the first use mode, the vehicle 1000 can be considered to be in a stroller mode. As shown in Fig. 16, when the rider assembly 700 is in the second use position, the rider assembly 700 is disposed at an angle with respect to the horizontal plane, and the top of the rider assembly 700 (i.e. the end of the rider assembly 700 away from the first pivot point Q1) is located at the second side of the frame assembly 100. At this time, when the seat assembly 200 is in the second use mode, the vehicle 1000 can be considered to be in a trailer mode. As shown in Fig. 17, when the rider assembly 700 is in the third use position, the rider assembly 700 is disposed parallel to the horizontal plane, and the top of the rider assembly 700 is located at the first side of the frame assembly 100. Herein, the second side is disposed opposite to the first side with respect to the direction of travel of the vehicle 1000; in other words, the second side and the first side of the frame assembly 100 are disposed opposite to each other along the front-to-rear direction of the vehicle 1000. Specifically, the second side can be considered to be the side of the front frame 110 facing away from the rear frame 120, and the first side can be considered to be the side of the rear frame 120 facing away from the front frame 110. Therefore, when the rider assembly 700 is in the first use position and the seat assembly 200 is in the first use mode, the vehicle 1000 can be considered to be in a stroller mode (see Fig. 4), such that a user can stand at the rear side of the vehicle 1000 and push the rider assembly 700 to move the vehicle 1000 forward. When the rider assembly 700 is in the second use position and the seat assembly 200 is in the second use mode, the vehicle 1000 can be considered to be in a trailer mode (see Fig. 16), such that a user can stand at the front side of the vehicle 1000 (i.e. the side of the front frame 110 facing away from the rear frame 120) and pull the rider assembly 700 to move the vehicle 1000 forward. When the rider assembly 700 is in the third use position, the rider assembly 700 can be considered to be substantially housed in the bottom of the frame assembly 100, at which time the vehicle 1000 can be used as a cradle or a table, etc. For example, when the seat assembly 200 is in the second use mode and the steering of the front wheels 114 and / or the rear wheels 123 is locked, the vehicle 1000 can only move back and forth along the front-to-rear direction. Therefore, when a child is lying in the carrying space, a user can gently rock the vehicle 1000 back and forth along the front-to-rear direction to soothe the child, at which time the vehicle 1000 can be considered to be in a cradle mode (see Fig. 17). When the movement of the front wheels 114 and / or the rear wheels 123 is locked, a user can place the placement board 830 at the opening of the enclosure frame 210, at which time the vehicle 1000 can be considered to be a table (see Figs. 11 and 12).

[0138] Specifically, in combination with the use state of the aforementioned seat assembly 200, as shown in FIGS. 1 and 4, when the seat assembly 200 is in the first use state, the rider assembly 700 can generally be in the first use position, at which time the carrier 1000 is considered a stroller, and a user can stand behind the carrier 1000 on the first side of the frame assembly 100 to push the carrier 1000 forward. As shown in FIG. 16, when the seat assembly 200 is in the second use state, the rider assembly 700 can generally be in the second use position, at which time the carrier 1000 can be considered a trailer, and a user can stand in front of the carrier 1000 on the second side of the frame assembly 100 to pull the carrier 1000 forward. It should be noted that in other embodiments, when the seat assembly 200 is in the first use state, the rider assembly 700 can also be in the second use position, which is not specifically limited herein. Similarly, when the seat assembly 200 is in the second use state, the rider assembly 700 can also be in the first use position or the third use position, which is not specifically limited herein.

[0139] For example, when the seat assembly 200 is in the second use state, please refer to FIG. 6, FIG. 16 and FIG. 17, the seat assembly 200 can be regarded as a sleeping box when the carrying space of the seat assembly 200 is used to provide a lying space for a child to rest. At this time, the driver assembly 700 can be in any one of the first use position, the second use position or the third use position. When the driver assembly 700 is in the first use position (see FIG. 6), the carrier 1000 can be regarded as a sleeping box stroller, and the user can stand on the first side of the frame assembly 100 to push the carrier 1000 forward. When the driver assembly 700 is in the second use position (see FIG. 16), the carrier 1000 can be regarded as a sleeping box trailer, and the user can stand on the first side of the frame assembly 100 to pull the carrier 1000 forward. When the driver assembly 700 is in the third use position (see FIG. 17), the steering of the front wheel 114 and the rear wheel 123 is usually locked, and at this time, the carrier 1000 can be regarded as a rocking bed for the user to lull the child to sleep. Please refer to FIG. 6, FIG. 9, FIG. 10 and FIG. 16, when the carrying space of the seat assembly 200 is used to carry goods or sundries, the driver assembly 700 can be in the first use position or the second use position. When the driver assembly 700 is in the first use position (see FIG. 6), the carrier 1000 can be regarded as a goods stroller, and the user can stand on the first side of the frame assembly 100 to push the carrier 1000 forward to transfer the goods. When the driver assembly 700 is in the second use position (see FIG. 16), the carrier 1000 can be regarded as a goods trailer, and the user can stand on the second side of the frame assembly 100 to pull the carrier 1000 forward to transfer the goods. When a small seat 820 is hung or a basket 810 is clamped at the opening of the surrounding frame 210 of the seat assembly 200 (see FIG. 9 and FIG. 10), the driver assembly 700 can also be in the first use position or the second use position. When the seat assembly 200 is used to support the placement plate 830 to make the carrier 1000 serve as a table, the driver assembly 700 is usually not used and can be in the third use position (see FIG. 11 and FIG. 12). It should be noted that in the embodiment, when the driver assembly 700 is in the third use position, the upper driver frame 710 slides relative to the lower driver frame 720 to reduce the length of the driver assembly 700 as a whole. In this way, the user can avoid bumping into the driver assembly 700 when walking around the carrier 1000.

[0140] Please refer to FIG. 2 and FIG. 11, in an embodiment, the frame assembly 100 is provided with a first limiting member 730 and a second limiting member 740, and the first limiting member 730 and the second limiting member 740 are circumferentially spaced apart around the first pivot point Q1 (or the first pivot shaft). Specifically, the first limiting member 730 is arranged on the front wheel frame 110 and away from the first pivot point Q1 (or the first pivot shaft), and the second limiting member 740 is arranged on the rear wheel frame 120 and substantially in the same horizontal plane as the first pivot point Q1 (or the first pivot shaft). When the rider assembly 700 is engaged with the second limiting member 740, the rider assembly 700 is substantially parallel to the horizontal plane and in the third use position, at which time the carrier 1000 can be used as a cradle or a table (as a table, a placement plate 830 needs to be placed at the opening of the surrounding frame 210). In an embodiment, the rider assembly 700 is provided with an engaging member 750 adapted to engage with the first limiting member 730. When the engaging member 750 is engaged with the first limiting member 730, the rider assembly 700 is in and remains in the first use position, at which time the carrier 1000 can be considered to be in the stroller mode, and the rider assembly 700 is substantially parallel to the front wheel frame 110. It should be noted that the first limiting member 730 can be arranged at the second pivot point Q2, i.e., the first limiting member 730 is coaxially arranged with the second pivot shaft. Of course, in other embodiments, the first limiting member 730 can also be located at any position between the first pivot point Q1 and the second pivot point Q2, which is not specifically limited here.

[0141] Specifically, in the present embodiment, as shown in FIG. 11, the second limiting member 740 is a hook structure mounted on the sliding member 125, and the opening of the hook faces away from the ground. After the user rotates the rider assembly 700 to the third use position, the rider assembly 700 can be directly released, and the rider assembly 700 is automatically clamped into the opening of the hook.

[0142] Please refer to FIG. 18 and FIG. 19, in an embodiment, the engaging member 750 includes a sliding sleeve 751. Specifically, the sliding sleeve 751 is slidably sleeved on the rider assembly 700 (such as the second support pipe 721) and has a first position and a second position, and the sliding sleeve 751 is provided with a second engaging portion 7511 adapted to engage with the first limiting member 730. Specifically, one of the second engaging portion 7511 and the first limiting member 730 is a convex structure, and the other is a groove structure, and the two are engaged in a concave-convex fitting manner. When the sliding sleeve 751 is in the first position, the second engaging portion 7511 is engaged with the first limiting member 730, and the rider assembly 700 is limited to pivot around the first pivot point Q1; when the sliding sleeve 751 is in the second position, the second engaging portion 7511 is disengaged from the first limiting member 730, and the rider assembly 700 can pivot around the first pivot point Q1 to switch to the third use position or the second use position.

[0143] Please continue to refer to FIG. 18 and FIG. 19, in the embodiment, the engaging member 750 further comprises a fixing plug 752 and a second reset member 753. The fixing plug 752 is fixedly installed on the handle assembly 700, and the second reset member 753 is abutted between the fixing plug 752 and the sliding sleeve 751. The second reset member 753 can be, for example, a spring, a spring sheet or other elastic member, which is used to drive the sliding sleeve 751 to reset and keep the sliding sleeve 751 in the first position. Specifically, in the embodiment, the first limiting member 730 is a convex structure, and the second engaging portion 7511 is a groove structure. When the user needs to drive the handle assembly 700 to rotate around the first pivot point Q1 to switch the handle assembly 700 from the first use position to the second use position or the third use position, the user can operate (push or pull upward along the first direction F1) the sliding sleeve 751 to move the sliding sleeve 751 upward along the length direction of the second support tube 721 to the second position, and after the first limiting member 730 is disengaged from the second engaging portion 7511, the user can rotate the handle assembly 700 and release the sliding sleeve 751. The sliding sleeve 751 is automatically moved downward along the first direction F1 to reset to the first position under the action of the second reset member 753. Specifically, in the embodiment, the sliding sleeve 751 is further provided with a guide portion 7512 having a slope, which is suitable for abutting against the first limiting member 730 to drive the sliding sleeve 751 to move from the first position to the second position. Therefore, when the user needs to switch the handle assembly 700 from the second use position or the third use position to the first use position, the handle assembly 700 can be directly rotated. In the process of rotation, the guide portion 7512 of the sliding sleeve 751 gradually abuts against the first limiting member 730. Under the guidance of the slope, the first limiting member 730 can abut against the sliding sleeve 751 and automatically move upward along the first direction F1 (i.e. automatically move to the second position). When the sliding sleeve 751 moves to the second position, the second engaging portion 7511 is opposite to the first limiting member 730, and the second reset member 753 drives the sliding sleeve 751 to move downward along the first direction F1 to reset to the first position. In this way, the second engaging portion 7511 is engaged with the first limiting member 730, and the handle assembly 700 is limited in the first use position.

[0144] FIG. 20 and FIG. 21 show perspective views of a carrier A1000 in different states according to a second embodiment of the present application. In some embodiments of the present application, the carrier A1000 can be a stroller as an example. However, in some other embodiments, the carrier A1000 can also be used as a carrier, a trailer, or a pet stroller, etc. according to different use scenarios.

[0145] In the second embodiment of the vehicle A1000, unless otherwise specified (for example, in some brackets marked in the following part of the description, the same components as those in the aforementioned first embodiment are referred to by the same names). In the second embodiment and the aforementioned first embodiment, the description of the same or corresponding components can be interchangeably referred to between the two sets of embodiments, unless there is a conflict.

[0146] The vehicle A1000 can have a left-right direction (also referred to as a transverse direction D1) and a front-rear direction (also referred to as a longitudinal direction D2). In each of the drawings, the F direction represents the front direction of the vehicle A1000, the B direction represents the rear direction of the vehicle A1000, the L direction represents the left direction of the vehicle A1000, and the R direction represents the right direction of the vehicle A1000. Note that, unless otherwise specifically specified and limited, the front, rear, left, right, and the like of the vehicle A1000 in each embodiment of the present application are based on the orientation of the vehicle A1000 when it is normally running. These orientation terms are used only to make the description of the embodiments of the present application clearer, and are not intended to improperly limit the scope of protection of the present application.

[0147] Referring to FIGS. 20 and 21, the vehicle A1000 can have a generally left-right symmetrical structure, which can include a frame assembly A100, a handle assembly A200, a seat assembly A300, and a linkage assembly A400.

[0148] The vehicle A1000 can have an unfolded state and a folded state. Referring to FIGS. 22 and 25, when the vehicle A1000 is in the unfolded state, each component in the vehicle A1000 can be in a respective unfolded state and generally unfolded relative to each other for use. Referring to FIGS. 24 and 41, when the vehicle A1000 is in the folded state, each component in the vehicle A1000 can be in a respective folded state and generally folded relative to each other.

[0149] Referring to FIGS. 20 and 21, the frame assembly A100 can include a front wheel frame A110 and a rear wheel frame A120. The front wheel frame A110 and the rear wheel frame A120 can be pivotally connected.

[0150] Continuing to refer to FIGS. 20 and 21, in some embodiments, the front wheel frame A110 is, for example, in a U-shaped structure, which includes front rod members A111 on the left and right sides and a front cross rod A112 connected between the two front rod members A111. The front cross rod A112 extends generally along the transverse direction D1. The front cross rod A112 can also be used as a footboard when a child is seated on the seat assembly A300 of the vehicle A1000. In some embodiments, at least one front wheel seat A113 is mounted on the bottom of the front wheel frame A110. Specifically, in the present embodiment, as shown in FIG. 20, two front wheel seats A113 are mounted on the bottom of the front wheel frame A110, which are spaced apart in the transverse direction D1. More specifically, the two front wheel seats A113 are mounted on the left and right ends of the front cross rod A112, and the two front rod members A111 are respectively connected with the front wheel seat A113 on the same side. Each front wheel seat A113 is used to mount a front wheel A114 so that the vehicle A1000 can be moved. The front wheel A114 can be a universal wheel or a non-universal wheel. In some embodiments, the front wheel frame A110 can also have different embodiments from that in FIG. 20. For example, the front wheel frame A110 can only include two front rod members A111, the ends of which are connected to form a V-shaped structure, and a front wheel seat A113 can be centrally mounted on the bottom of the front wheel frame A110. Alternatively, for example, the front wheel frame A110 can only include two front rod members A111 which are parallelly arranged in the left and right directions, and two front wheel seats A113 are respectively connected with the two front rod members A111, and the like, as long as the front wheel frame A110 can provide a mounting portion for mounting the front wheel A114.

[0151] Referring to FIGS. 20 and 21, the rear wheel frame A120 includes, for example, two rear rod members A121 on the left and right sides. The bottom of the rear wheel frame A120 is provided with at least one rear wheel seat A122. Specifically, in the present embodiment, the bottom of the rear wheel frame A120 is provided with two rear wheel seats A122. The two rear wheel seats A122 are respectively mounted on the two rear rod members A121 on the same side. Each rear wheel seat A122 is used to mount a rear wheel A123. The rear wheel A123 may, for example, also be a universal wheel or a non-universal wheel. In the present embodiment, the size of the rear wheel A123 is greater than that of the front wheel A114, so that the overall structure of the carrier A1000 is more stable. Of course, in another alternative embodiment, the size of the rear wheel A123 can be the same as or smaller than that of the front wheel A114. In some embodiments, the rear wheel frame A120 can also have a different implementation from that shown in FIG. 20. For example, the rear wheel frame A120 can include only two rear rod members A121, one end of each of the two rear rod members A121 is connected to form a V-shaped structure, and the bottom of the rear wheel frame A120 can be centrally provided with one rear wheel seat A122. Alternatively, for example, the rear wheel frame A120 can include only two rear rod members A121 arranged in parallel along the left-right direction, and the two rear wheel seats A122 are respectively connected to the two rear rod members A121, and the like, as long as the rear wheel frame A120 can provide a mounting portion for mounting the rear wheel A123.

[0152] Referring to FIGS. 20 and 21, in some embodiments, the front wheel frame A110 can further include a front reinforcing rod A115. The rear wheel frame A120 can further include a rear reinforcing rod A124. The front reinforcing rod A115 is connected between the two front rod members A111 and extends along the left-right direction. The rear reinforcing rod A124 is connected between the two rear rod members A121 and extends along the left-right direction. In this way, the structural strength of the front wheel frame A110 and the rear wheel frame A120 can be improved, thereby improving the overall structural strength of the carrier A1000, so that the carrier A1000 has a longer service life.

[0153] Referring to FIGS. 22 and 25, when the carrier A1000 is in the unfolded state, the front wheel frame A110 and the rear wheel frame A120 (for example, between the front rod member A111 and the rear rod member A121 on the same side) are pivoted open to a first angle a1. Referring to FIGS. 24 and 41, when the carrier A1000 is in the folded state, the front wheel frame A110 and the rear wheel frame A120 (for example, between the front rod member A111 and the rear rod member A121 on the same side) are pivoted to a second angle a2. The second angle a2 is smaller than the first angle a1. In the examples shown in the figures, the first angle a1 can be a right angle of about 90 degrees or an obtuse angle slightly greater than 90 degrees, and the second angle a2 can be, for example but not limited to, an acute angle in the range of 0-60 degrees. However, in other examples, the first angle a1 and the second angle a2 can also be set to other suitable values as needed.

[0154] Referring to FIGS. 20 and 21, a rider assembly A200 is coupled to the frame assembly A100, for example, to the front wheel frames A110 on both sides. The rider assembly A200, for example, has a U-shaped structure that includes two support bars A210 and a push bar A220 (corresponding to the push tube 712) coupled between the two support bars A210. The lower sides of the two support bars A210 are respectively pivotally coupled to the front bar members A111 of the front wheel frames A110 of the frame assembly A100. The upper sides of the two support bars A210 are respectively coupled to the ends of the push bar A220. The push bar A220 extends along the lateral direction D1 for a user to hold and push the vehicle A1000. In some embodiments, referring to FIGS. 22 and 24, the two support bars A210 of the rider assembly A200 can respectively include an upper support bar A211 (corresponding to the first support tube 711) and a lower support bar A212 (corresponding to the second support tube 721). The upper support bar A211 and the lower support bar A212 can be telescopically coupled to allow the rider assembly A200 to be lengthened (see FIG. 22) or shortened (see FIG. 24) by the telescoping between the upper support bar A211 and the lower support bar A212.

[0155] In the embodiments of the present application, when the rider assembly A200 is operated to fold the vehicle A1000, the rider assembly A200 is in a fixed state in which the movement of the rider assembly A200 relative to the frame assembly A100 is restricted, so that the movement of the rider assembly A200 can drive the frame assembly A100 to move accordingly. For example, referring to FIG. 20, in the fixed state, the rider assembly A200 can be in a state in which the support rod A210 of the rider assembly A200 is substantially parallel to the front rod member A111 of the front wheel frame A110. In some embodiments, referring to FIG. 20, the support rod A210 of the rider assembly A200 can be pivotally connected to the front wheel frame A110 of the frame assembly A100, for example, at a position where the front cross rod A112 on both sides of the front wheel frame A110 meets the front rod member A111. In some embodiments, the rider assembly A200 can have a locked state in which the rotation of the rider assembly A200 relative to the front rod member A111 of the frame assembly A100 is restricted (see FIG. 20), and an unlocked state in which the rotation of the rider assembly A200 relative to the front rod member A111 of the frame assembly A100 is allowed (see FIG. 32), and the rider assembly A200 can be switched between the two states. Thus, when the rider assembly A200 is in the unlocked state, the rider assembly A200 can rotate relative to the frame assembly A100 in a counterclockwise direction (a first rotation direction R1) and a clockwise direction (a second rotation direction R2) when viewed from the left side of the vehicle A1000. When the rider assembly A200 is in the locked state, the rider assembly A200 is in the fixed state described above, and the rider assembly A200 is relatively fixed with the frame assembly A100, so that the rotation of the rider assembly A200 in the first rotation direction R1 or the second rotation direction R2 drives the front wheel frame A110 of the frame assembly A100 to rotate in the first rotation direction R1 or the second rotation direction R2 accordingly. In addition, in some embodiments, instead of being pivotally connected, the support rod A210 of the rider assembly A200 can be fixedly connected to the front wheel frame A110 of the frame assembly A100 by clamping or being integrally formed, etc. In this case, the rider assembly A200 is in the fixedly connected state by default, and the rotation of the rider assembly A200 in the first rotation direction R1 or the second rotation direction R2 also drives the front wheel frame A110 of the frame assembly A100 to rotate accordingly.

[0156] Referring to FIGS. 20 and 21, in some embodiments, the seat assembly A300 can include a surrounding frame A310. The surrounding frame A310 can be a frame that is closed in a circumferential direction, such as a rectangular frame, an oval frame, a pentagonal frame, or the like. In particular, in the example shown in FIGS. 20 and 21, the surrounding frame A310 is substantially a rectangular frame. When it is placed horizontally, it can be substantially considered to extend in a front-rear direction of the vehicle A1000. The surrounding frame A310 can include a first backrest tube A311, a second backrest tube A312, and a connecting seat A313. The first backrest tube A311 and the second backrest tube A312 are both in a U-shaped structure, and the opening ends of the two U-shaped structures are opposite to each other and connected by the connecting seat A313. A seat portion can be mounted to the surrounding frame A310 for a child or a pet to sit on. For example, referring to FIG. 29, a seat support A320 can be detachably mounted to the connecting seat A313. The seat support A320 can include a seat tube A321 and a backrest tube A322 that are pivotally connected to each other. A seat cloth cover (not shown) (corresponding to the seat cloth cover 220) can be sleeved on the seat support A320 to form a seat (corresponding to the seat 240) for a person to sit on. The seat cloth cover can be a multi-layer structure, and the inside of the seat cloth cover can be filled with a cushioning material such as a seat plate or foam to improve the comfort of sitting. In some embodiments, a handrail portion A330 (corresponding to the handrail tube 250) can be mounted on the rods on both sides of the surrounding frame A310, for example, via the connecting seat A313, to facilitate a child sitting in the seat to hold on. In some embodiments, referring to FIGS. 20 and 22, a canopy support A340 can be detachably mounted on the rods on both sides of the surrounding frame A310. A canopy cloth (not shown) can be covered above the surrounding frame A310 by the canopy support A340, so as to play a role of mosquito prevention, light shielding, or the like. The canopy support A340 and the canopy cloth together form a canopy assembly.

[0157] The seat assembly A300 is pivotally connected to the frame assembly A100 and forms a first pivot connection point AQ1 (corresponding to the fifth pivot point Q5). For example, referring to FIGS. 20 and 21, the rear rod A121 of the frame assembly A100 can be pivotally connected to the surrounding frame A310 on both sides of the seat assembly A300 via the first pivot connection point AQ1. As will be discussed below, for example, the rear rod A121 of the rear wheel frame A120 can be pivotally connected to the surrounding frame A310 on both sides of the seat assembly A300 at the first pivot connection point AQ1 by the adjusting member A500 mounted on the rear rod A121, so that the seat assembly A300 can be rotated relative to the rear wheel frame A120.

[0158] When the carrier 1000 is in the unfolded state, such as in the first use state shown in FIGS. 20, 22 and 25 (corresponding to the stroller mode in the first embodiment), when the front and rear wheels A114, A123 of the carrier 1000 are placed on a horizontal ground, the front side (the side of the first backrest A311) of the seat assembly A300 is lower than the rear side (the side of the second backrest A312) of the seat assembly A300, and the seat assembly A300 is at an angle with the horizontal plane. The front side of the seat assembly A300 is closer to the front side of the rider assembly A200 (the side of the front rod A111), and the rear side of the seat assembly A300 is closer to the rear side of the rider assembly A200 (the side of the push handle rod A220). The seat assembly A300 is arranged substantially parallel to the rider assembly A200. In addition, as will be discussed below, in some embodiments, the unfolded state of the carrier 1000 can have a second use state in addition to the first use state shown in FIGS. 20, 22 and 25. Referring to FIG. 42, in the second use state (corresponding to the bassinet mode in the first embodiment), when the front and rear wheels A114, A123 of the carrier 1000 are placed on a horizontal ground, the front side of the seat assembly A300 is at the same height as the rear side of the seat assembly A300, and the seat assembly A300 is parallel to the horizontal plane. In this mode, the front side of the seat assembly A300 is still closer to the front side of the rider assembly A200 than the rear side of the seat assembly A300, and the rear side of the seat assembly A300 is still closer to the rear side of the rider assembly A200 than the front side of the seat assembly A300, and the seat assembly A300 is at an angle with the rider assembly A200. When the carrier 1000 is in the folded state, referring to FIGS. 24, 40, when the front and rear wheels A114, A123 of the carrier 1000 are placed on a horizontal ground, the seat assembly A300 is inverted as a whole, the front side of the seat assembly A300 is higher than the rear side of the seat assembly A300, and the front side of the seat assembly A300 is closer to the rear side of the rider assembly A200, and the rear side of the seat assembly A300 is closer to the front side of the rider assembly A200, so that the seat assembly A300 and the rider assembly A200 are folded together. In addition, in some embodiments, the unfolded state of the carrier 1000 can also have a third use state. Referring to FIG. 32, in the third use state (corresponding to the trailer mode in the first embodiment), when the rider assembly A200 is in the unlocked state, the rider assembly A200 can be rotated relative to the frame assembly A100 in the first rotation direction R1 to be at an angle with the front rod A111, and the seat assembly A300 is parallel to the horizontal plane. In this state, the carrier 1000 can be used as a trailer, and the user can move the carrier 1000 by pulling the rider assembly A200.

[0159] Referring to FIGS. 20 and 21, in embodiments of the present application, a linkage assembly A400 is provided. A user can control the front wheel assembly A110 by holding the handlebar assembly A200 and step on the linkage assembly A400 to fold the various components of the vehicle A1000 using the linkage assembly A400. Referring to FIGS. 20 and 21, the linkage assembly A400 is pivotally coupled to the seat assembly A300 to form a second pivot point AQ2 (corresponding to the third pivot point Q3) and the linkage assembly A400 is slidable relative to the frame assembly A100. Referring to FIGS. 22-24, the sliding of the linkage assembly A400 relative to the frame assembly A100 (e.g., downward relative to the rear wheel assembly A120 as shown in FIG. 22) and the rotation of the handlebar assembly A200 in the first rotational direction Rl causes the seat assembly A300 to switch from the unfolded state to the folded state. The second pivot point AQ2 and the first pivot point AQl on the seat assembly A300 can be distributed at different positions in the direction from the rear side to the front side of the seat assembly A300. For example, referring to FIG. 20, the second pivot point AQ2 can be closer to the rear side of the seat assembly A300 than the first pivot point AQl. In this way, the combined forces at the two pivot points AQl, AQ2 on the seat assembly A300 can cause the seat assembly A300 to rotate.

[0160] Referring to Figs. 20 and 21, in some embodiments, the linkage assembly A400 can include a slider A410, a first linkage A420, and a pedal A430 (corresponding to the basket assembly 600). The slider A410 is slidably connected to the frame assembly A100. In the example shown, the slider A410 has a hollow passage, and the slider A410 is slidably fitted over the rear rod A121 of the rear wheel frame A120 via the hollow passage, such that the slider A410 can slide up and down along the rear rod A121. In some examples, the slider A410 can also have other configurations, such as being fitted to one side of the rear rod A121 of the rear wheel frame A120 via a slide rail, etc. In some embodiments, a sliding mechanism such as a slide rail or a ball bearing can be provided between the slider A410 and the rear rod A121 to facilitate sliding therebetween. As the slider A410 slides up and down along the rear rod A121, the entire linkage assembly A400 can be caused to slide up and down relative to the rear wheel frame A120. As used herein, up and down sliding / rotation is not limited to straight up and down sliding / rotation, but can also be oblique up and down sliding / rotation. One end of the first linkage A420 is pivotally connected to the two sides of the surrounding frame A310 of the seat assembly A300 and forms a second pivot point AQ2, and the other end of the first linkage A420 is pivotally connected to the slider A410 and forms a third pivot point AQ3 (corresponding to the fourth pivot point Q4). The pedal A430 can have, for example, a U-shaped structure, and the two ends of the pedal A430 are connected to the slider A410. A pedal cover A431 can be fitted on the rear side crossbar of the pedal A430 for a user to step on. The pedal cover A431 can be, for example, made of plastic and can provide relatively high friction to facilitate stepping. In addition, the pedal cover A431 can also prevent the user from directly stepping on the rod with a coating and damaging the coating. Downward movement (e.g., rotation) of the pedal A430 can cause the slider A410 to slide downward relative to the frame assembly A100, and via the first linkage A420, the rear side of the seat assembly A300 is caused to flip downward, thereby causing the seat assembly A300 to rotate from the unfolded state to the folded state along the second rotation direction R2. In some embodiments, the linkage assembly A400 can further include a second linkage A440. One end of the second linkage A440 is pivotally connected to the front rod A111 of the front wheel frame A110 of the frame assembly A100 and forms a fourth pivot point AQ4, and the other end of the second linkage A440 is pivotally connected to the slider A410 and forms a fifth pivot point AQ5. In this way, rotation of the rider assembly A200 along the first rotation direction R1 causes the front wheel frame A110 of the frame assembly A100 to rotate along the first rotation direction R1, and via the second linkage A440, the slider A410 is caused to slide downward relative to the rear rod A121 of the rear wheel frame A120 of the frame assembly A100.

[0161] Referring to FIGS. 26, 28-30, 38, 40, in some embodiments, to avoid undesired collapsing due to external forces or the like urging the linkage assembly A400 to move downward during use, the linkage assembly A400 can further include a first locking assembly A450. The first locking assembly A450 is switchable between a locked state (FIGS. 26, 28) in which the sliding member A410 is restricted from sliding relative to the rear rod member A121 of the rear wheel frame A120 of the frame assembly A100, and an unlocked state (FIGS. 38, 40) in which the sliding member A410 is allowed to slide relative to the rear rod member A121 of the rear wheel frame A120 of the frame assembly A100. In this way, when the vehicle A1000 is in the deployed state and in use, the first locking assembly A450 can be switched to the locked state to avoid undesired collapsing during use, and when it is desired to collapse the vehicle A1000, the first locking assembly A450 can be switched to the unlocked state to allow collapsing of the vehicle A1000.

[0162] Referring to FIGS. 26, 28-30, 38, 40, in some embodiments, the first locking assembly A450 can include a first locking member A451 and a first locking counterpart A452. The first locking assembly A450 can be disposed between the slider A410 and the frame assembly A100. The first locking member A451 can be disposed on the slider A410. The first locking counterpart A452 can be disposed on the frame assembly A100, for example, on the rear rod member A121 of the rear wheel frame A120. The first locking member A451 can be movable relative to the rear rod member A121 of the rear wheel frame A120 of the frame assembly A100 and have a locked position (FIG. 28) and an unlocked position (FIG. 40). When the first locking member A451 is in the locked position, the first locking member A451 is locked with the first locking counterpart A452 to restrict the slider A410 from sliding relative to the rear rod member A121 of the rear wheel frame A120 of the frame assembly A100. When the first locking member A451 is in the unlocked position, the first locking member A451 is unlocked from the first locking counterpart A452 to allow the slider A410 to slide relative to the rear rod member A121 of the rear wheel frame A120 of the frame assembly A100. As shown in FIGS. 28 and 40, by way of example, the first locking member A451 can have a locking portion A4513. The locking portion A4513 can extend along a direction perpendicular to the extension direction of the rear rod member A121. For example, the locking portion A4513 can be in the shape of a sheet or a strip, etc. The first locking counterpart A452 can be a locking hole formed by a hole in the side wall A1211 of the rear rod member A121. When the locking portion A4513 of the first locking member A451 slides along its extension direction and extends into the locking hole, the first locking member A451 is in the locked position, and the locking portion A4513 can block the slider A410 from sliding relative to the rear rod member A121 by cooperating with the locking hole. When the locking portion A4513 of the first locking member A451 slides along its extension direction and withdraws from the locking hole, the first locking member A451 is in the unlocked position, and the locking portion A4513 is unlocked from the locking hole, so that the slider A410 can slide up and down along the rear rod member A121. In other examples, the first locking member A451 and the first locking counterpart A452 can have other different forms and can be locked or unlocked with each other in different ways. For example, the first locking member A451 can have a hook-shaped locking portion A4513 and the first locking counterpart A452 can be a fixed column disposed in the rear rod member A121 and capable of being hooked by the hook-shaped locking portion A4513, etc.

[0163] Referring to FIGS. 26 and 38, in some embodiments, the stepping member A 430 is pivotally connected to the sliding member A 410. The downward rotation of the stepping member A 430 relative to the sliding member A 410 in the second rotational direction R2 drives the first locking assembly A 450 to switch from the locked state to the released state. Thus, the first locking assembly A 450 can be unlocked when the stepping member A 430 is stepped down, without the need to perform additional operations to unlock the first locking assembly A 450. Specifically, referring to FIGS. 20 and 38, the stepping member A 430 can include a U-shaped stepping pipe A 432, and pivot portions A 433 installed at both ends of the U-shaped stepping pipe A 432. The stepping member A 430 is pivotally connected to the sliding member A 410 via the pivot portions A 433. The pivot portions A 433 of the stepping member A 430 are operatively connected to the first locking member A 451. The stepping member A 430 has a locking position (FIG. 28) and an unlocking position (FIGS. 34, 36, 40) in its rotational path relative to the sliding member A 410. The pivot center A 4332 of the pivot portions A 433 is the pivot point at which the stepping member A 430 is pivotally connected to the sliding member A 410. The first locking member A 451 can be connected to the pivot portions A 433 at a distance from the pivot center A 4332, for example, can be connected to the pivot portions A 433 near the edges. Thus, the rotation of the pivot portions A 433 can drive the first locking member A 451 to move. When the stepping member A 430 is rotated downward relative to the sliding member A 410 in the second rotational direction R2 to the unlocking position, the first locking member A 451 can be driven to move to the released position. When the stepping member A 430 is rotated upward relative to the sliding member A 410 in the first rotational direction Rl to the locking position, the first locking member A 451 can be driven to move to the locked position.

[0164] Referring to FIGS. 28-30, 34, 36 and 40, in some embodiments, the first lock A451 is movably arranged in the slider A410, and the first lock A451 has a first guide pin A4511. The pivot portion A433 of the pedal A430 has a first guide slot A4331. The first guide slot A4331 can be located, for example, at a distance from the pivot center A4332 on the upper side of the pivot portion A433. The first guide pin A4511 extends into the first guide slot A4331 and slides in the first guide slot A4331. In the example shown in FIG. 28, the first guide pin A4511 can have a cylindrical shape, and the first guide slot A4331 can extend generally radially outward from a position on the pivot portion A433 to the edge of the pivot portion A433 and form a notch that communicates with the outside. Since the first guide pin A4511 can slide in the first guide slot A4331, it not only has a degree of freedom of displacement relative to the side wall of the first guide slot A4331, but also has a degree of freedom of rotation relative to the side wall of the first guide slot A4331. Therefore, the rotation of the pivot portion A433 does not cause the first guide pin A4511 to rotate as well, but mainly drives the first guide pin A4511 to displace in a direction transverse to the sliding direction of the slider A410 (a direction aligned with the first lock portion A452). In this way, when the pedal A430 is rotated relative to the slider A410 between the locked position and the unlocked position, the rotation of the pivot portion A433 of the pedal A430 can drive the first lock A451 to slide between the locked position and the unlocked position along a direction transverse to (e.g., perpendicular to) the sliding direction of the slider A410 (i.e., the extension direction (length direction) of the rear rod A121) through the cooperation of the first guide pin A4511 and the first guide slot A4331. In some embodiments, a first guide portion A411 can also be arranged in the slider A410 for guiding the sliding direction of the first lock A451. The extension direction of the first guide portion A411 can be transverse to (e.g., perpendicular to) the sliding direction of the slider A410. The first lock A451 is arranged in the slider A410 and can slide along the extension direction of the first guide portion A411 between the locked position and the unlocked position through the sliding cooperation with the first guide portion A411. The first guide portion A411 can have different configurations. For example, referring to FIG. 28, the first guide portion A411 can include a first guide slot A411a arranged in the slider A410. The first guide slot A411a has a guide side wall A4111a. The extension direction of the guide side wall A4111a is perpendicular to the sliding direction of the slider A410. The first lock A451 is arranged in the first guide slot A411a and can slide along the extension direction of the guide side wall A4111a of the first guide slot A411a by abutting against the guide side wall A4111a.

[0165] Referring to FIGS. 28, 29, 31 and 40, in some embodiments, the first lock A451 can include a sleeve A4512, a lock portion A4513, a first guide pin A4511, a second guide pin A4514 and a resilient member A4515. The sleeve A4512 is provided with a second guide groove A45121. The second guide groove A45121 extends perpendicularly to the sliding direction of the slider A410, and the first guide pin A4511 is provided on the sleeve A4512. The lock portion A4513 is movably arranged in the sleeve A4512. When the first lock A451 is in the locked position, the lock portion A4513 extends into the first counter-lock portion A452 and is locked with the first counter-lock portion A452. When the first lock A451 is in the unlocked position, the lock portion A4513 is withdrawn from the first counter-lock portion A452 and is unlocked from the first counter-lock portion A452. The second guide pin A4514 is connected to the lock portion A4513, and the second guide pin A4514 extends into the second guide groove A45121 and is slidingly engaged with the second guide groove A45121. The resilient member A4515 is connected between the second guide pin A4514 and the sleeve A4512. The resilient member A4515 can be a spring or the like, for example. In such embodiments, the sliding engagement of the second guide pin A4514 with the second guide groove A45121 allows the lock portion A4513 to slide within the sleeve A4512 relative to the sleeve A4512 within a certain stroke. Since the sleeve A4512 provided with the first guide pin A4511 is not directly rigidly connected between the lock portion A4513 for locking with the first counter-lock portion A452, but is connected therebetween via the resilient member A4515 for buffering connection, the force exerted by the treading member A430 on the first lock A451 via the first guide pin A4511 is not directly rigidly applied to the lock portion A4513, but can be conducted to the lock portion A4513 after buffering via the resilient member A4515. In this way, the force applied to the lock portion A4513 can be more gentle and uniform, so that the motion transmission between the pivoting portion A433 of the treading member A430 and the lock portion A4513 is smoother, and the situation that the lock portion A4513 is stuck due to improper engagement with the surrounding components is reduced or avoided. In addition, the impact between the lock portion A4513 and the first counter-lock portion A452 due to excessive force or due to the fact that the lock portion A4513 and the first counter-lock portion A452 are not completely aligned can also be alleviated or avoided, so as to avoid damaging these components or surrounding components. In some other embodiments, the first lock A451 can also have different implementations. For example, the first lock A451 can also be integrally formed by the above-mentioned lock portion A4513 and the first guide pin A4511 provided on the lock portion A4513, without the above-mentioned sleeve A4512, second guide pin A4514 and resilient member A4515.

[0166] In some embodiments, the stepping member A430 can be used as a basket pole. In other words, the aforementioned stepping member A430 can be formed by using a basket pole. When the stepping member A430 is not stepped on, the stepping member A430 can be in a substantially horizontal position, thereby allowing a basket or the like to be placed on the stepping member A430 used as a basket pole. A user can place purchased food or personal belongings or the like in the basket to reduce the burden of carrying.

[0167] Referring to FIGS. 26, 28, 39, and 40, in some embodiments, the linkage assembly A400 further includes a first return member A460. The first return member A460 can be connected between the lower side of the pivot portion A433 and the sidewall of the sliding member A410. The first return member A460, for example, can be an elastic element such as a spring, which can provide the stepping member A430 with an elastic restoring force tending to switch the stepping member A430 to the locked position. In embodiments in which the stepping member A430 is used as a basket pole, the first return member A460 can provide the stepping member A430 with an elastic restoring force to keep the stepping member A430 in a substantially horizontal position, thereby facilitating the placement and use of the basket.

[0168] Referring to FIGS. 28, 30, and 40, in some embodiments, the sliding member A410 can be provided with a stop portion A472. For example, the pivot point of the first linkage member A420 and the sliding member A410 can have a blocking member A470, which can include a pivot portion A471 and a stop portion A472. The pivot portion A471 can be located at the pivot point of the first linkage member A420 and the sliding member A410. Specifically, the pivot portion A471 can be fixed to the sidewall of the sliding member A410, and the sliding member A410 is pivoted to the first linkage member A420 via the pivot portion A471. The stop portion A472 can extend from the pivot portion A471 toward the pivot portion A433 of the stepping member A430. The stop portion A472, for example, can have a strip shape as shown in the drawings, or other shapes. The stop portion A472 can cover the gap between the pivot point of the first linkage member A420 and the sliding member A410 and the pivot point of the stepping member A430 and the sliding member A410, to block foreign matter such as sand and dust from entering the gap and interfering with the pivoting of the pivot point. When the stepping member A430 is pivoted upward relative to the sliding member A410 in the first pivoting direction R1 to the upper limit position, the stop portion A472 (e.g., the end thereof) abuts against the stepping member A430 (e.g., the pivot portion A433) to prevent further upward pivoting of the stepping member A430. In this way, the stepping member A430 can be prevented from being pivoted upward to an excessively high position and interfering with, for example, the first linkage member A420 above. In embodiments in which the stepping member A430 is used as a basket pole, this can also prevent the stepping member A430 from being pivoted upward to an excessively high position and causing the basket placed thereon to be tipped over.

[0169] Referring to FIGS. 20, 26, and 38, in some embodiments, the carrier A100 further comprises an adjusting member A500. The adjusting member A500 is movably disposed on the frame assembly A100 and pivotally connected with the seat assembly A300. For example, the adjusting member A500 can be a rod-like structure, which can be disposed on the rear rod A121 of the rear wheel frame A120 of the frame assembly A100. One end of the adjusting member A500 can be pivotally connected with the two sides of the surrounding frame A310 of the seat assembly A300 at a first pivot point AQ1, and the other end can be slidingly sleeved with the rear rod A121 of the rear wheel frame A120, such that the adjusting member A500 can slide relative to the rear wheel frame A120, and the adjusting member A500 and the rear rod A121 form an extension structure. With the movement of the adjusting member A500 relative to the rear rod A121, the surrounding frame A310 can be pivoted about the first pivot point AQ1, and thus the angle of the seat assembly A300 can be adjusted, so that the seat assembly A300 can be switched between the unfolded state and the folded state.

[0170] Referring to FIGS. 26, 27, 30, 37, 39, in some embodiments, to avoid undesired movement between the adjustment member A500 and the rear frame A120, the vehicle A1000 can further include a second locking assembly A600 (corresponding to the locking assembly 330). The second locking assembly A600 is disposed between the adjustment member A500 and the rear bar member A121 of the rear frame A120 of the frame assembly A100, and has a locked state and an unlocked state. When the second locking assembly A600 is in the locked state, the adjustment member A500 is fixed relative to the rear bar member A121 of the rear frame A120 of the frame assembly A100 to restrict the seat assembly A300 from switching between the deployed state and the collapsed state. When the second locking assembly A600 is in the unlocked state, the adjustment member A500 is movable relative to the rear bar member A121 of the rear frame A120 of the frame assembly A100 to allow the seat assembly A300 to switch between the deployed state and the collapsed state. In some embodiments, the second locking assembly A600 includes a second locking member A610 (corresponding to the first locking member 331), a second locking portion (corresponding to the first locking portion 332), and a third locking portion (corresponding to the second locking portion 333). The second locking member A610 is movable relative to the frame assembly A100 and the adjustment member A500, and has a locked position and an unlocked position. The second locking portion (not shown) is disposed on the adjustment member A500. The third locking portion (not shown) is disposed on the rear bar member A121 of the rear frame A120 of the frame assembly A100. When the second locking member A610 is in the locked position, the second locking member A610 is in locking engagement with the second locking portion and the third locking portion to restrict the adjustment member A500 from moving relative to the frame assembly A100. When the second locking member A610 is in the unlocked position, the second locking member A610 is at least in unlocked engagement with the third locking portion to allow the adjustment member A500 to move relative to the frame assembly A100. In this way, when it is desired to adjust the angle of the seat assembly A300, the second locking assembly A600 can be switched to the unlocked state to adjust the angle of the seat assembly A300, e.g., to switch the seat assembly A300 between the deployed state and the collapsed state, via the adjustment member A500, and when the seat assembly A300 is in the desired state, e.g., in the deployed state for use, the second locking assembly A600 can be switched to the locked state to lock the seat assembly A300 in the current state, to avoid undesired rotation of the seat assembly A300.

[0171] The deployed state of the seat assembly A300 can include one or more use states. In some embodiments, the deployed state of the seat assembly A300 can include only one use state, such as the first use state shown in FIG. 20. In other embodiments, the deployed state of the seat assembly A300 can include multiple use states. For example, the deployed state of the seat assembly A300 can include a first use state and a second use state, where in the first use state, referring to FIG. 20, the perimeter frame A310 of the seat assembly A300 can be considered to be disposed at an angle with respect to a horizontal plane, and in the second use state, referring to FIG. 42, the perimeter frame A310 of the seat assembly A300 can be considered to be disposed parallel to the horizontal plane. In addition, the seat assembly A300 can be further switchable between multiple different positions in the first use state to allow the perimeter frame A310 of the seat assembly A300 to be disposed at different angles with respect to the horizontal plane, thereby allowing a child seated therein to be positioned at different angles. When the second locking assembly A600 is in the locked state, the adjustment member A500 is fixed with respect to the frame assembly A100, thereby restricting the seat assembly A300 from switching between any use state and the collapsed state; when the second locking assembly A600 is in the unlocked state, the adjustment member A500 is movable with respect to the frame assembly A100 to allow the seat assembly A300 to switch between the first use state, the second use state, and the collapsed state. In various embodiments described above having different numbers of use states, and each use state having one or more positions, the use states, positions, and the collapsed state can correspond to different angles at which the seat assembly A300 is rotated with respect to the horizontal plane, and the different angles of the seat assembly A300 can be adjusted by the adjustment member A500 being moved to different positions with respect to the rear rod member A121 of the rear frame A120. For example, referring to FIG. 32, the second locking portion can include a locking hole A510 disposed on the adjustment member A500 (corresponding to the locking hole of the first locking portion 332), and the third locking portion can include a plurality of locking holes A1212 disposed at different positions on the rear rod member A121 (corresponding to the first locking hole 3331 and the second locking hole 3332), each corresponding to a use state, a position, or the collapsed state. By adjusting the adjustment member A500 to a corresponding position and locking the second locking member A610 with the locking hole A510 on the adjustment member A500 and the locking hole A1212 at the corresponding position on the rear rod member A121 (e.g., extending into the locking hole A510 and the corresponding locking hole A1212), the seat assembly A300 can be locked in a corresponding state or position. Accordingly, when the second locking member A610 is in the unlocked position, the second locking member A610 can be unlocked from the third locking portion by being withdrawn from the corresponding locking hole A1212.In the embodiment of the present application having the second locking assembly A600, when it is required to fold the vehicle A1000, no matter what the current use state or gear of the seat assembly A300 is, the seat assembly A300 can be switched to the folded state by using the linkage assembly A400 and releasing the second locking assembly A600.

[0172] Referring to FIGS. 26, 27, 30, 38, 39, in some embodiments, the second locking assembly A600 further comprises a first release A620 (corresponding to the release 334). The first release A620 is movably arranged on the adjustment member A500, and has a locking position (FIG. 27) and an unlocking position (FIG. 38) on its movement path, and the first release A620 is operatively connected with the second locking member A610. Wherein, when the first release A620 is in the locking position, the second locking member A610 is in the locking position, and when the first release A620 is in the unlocking position, the second locking member A610 is in the release position. The user can drive the second locking member A610 to release by directly operating the first release A620 to move to the unlocking position (for example, pressing the first release A620), thereby allowing the adjustment of the use state, gear and folding state of the seat assembly A300 in the state that the second locking member A610 is in the release position. In addition, as will be described below, the user can also indirectly drive the first release A620 to move to the unlocking position by operating the second release A650 to drive the second locking member A610 to release.

[0173] Referring to FIGS. 27, 30, 32 and 39, in some embodiments, the second locking assembly A600 further comprises a first support seat A630 (corresponding to the support seat 335). The first support seat A630 is arranged on the adjusting member A500 and has a second guide portion A631 extending perpendicularly to the moving direction of the first release member A620. The second locking member A610 is arranged in the first support seat A630 and is slidable along the extension direction of the second guide portion A631 between the locking position and the release position by sliding cooperation with the second guide portion A631. The second locking member A610 has a third guide pin A611 (corresponding to the guide member 336). The first release member A620 is provided with a third guide groove A621 (corresponding to the second guide portion 3341) extending obliquely relative to the moving direction of the first release member A620. The third guide pin A611 extends into the third guide groove A621 and cooperates with the third guide groove A621 in sliding. When the first release member A620 switches between the locking position and the release position, the second locking member A610 is driven to slide along the extension direction of the second guide portion A631 between the locking position and the release position by the cooperation of the third guide pin A611 and the third guide groove A621. The second guide portion A631 can have different configurations. For example, referring to FIG. 32, in some embodiments, the second guide portion A631 can comprise a second guide groove A631a arranged in the first support seat A630, the extension direction of the second guide groove A631a being perpendicular to the moving direction of the first release member A620, and the second locking member A610 is arranged in the second guide groove A631a and is slidable along the extension direction of the second guide groove A631a. Alternatively or additionally, in some embodiments, the second guide portion A631 can comprise a sixth guide groove A631b (corresponding to the first guide portion 3351) arranged in the first support seat A630, the extension direction of the sixth guide groove A631b being perpendicular to the moving direction of the first release member A620, and the third guide pin A611 of the second locking member A610 extends into the sixth guide groove A631b and cooperates with the sixth guide groove A631b in sliding and is slidable along the extension direction of the sixth guide groove A631b.

[0174] Referring to FIGS. 27 and 39, in some embodiments, the second locking assembly A600 can further comprise a second reset member (not shown) (corresponding to the first reset member 337), which can be an elastic element such as a spring, etc. The second reset member provides the first release member A620 with an elastic restoring force tending to the locking position of the first release member A620.

[0175] Referring to Figs. 26-27, 31 and 38-39, in some embodiments, the second locking assembly A600 can further include a second release A650 movably disposed on the rear pole A121 of the rear frame A120 of the frame assembly A100, the second release A650 having a locked position and an unlocked position on its path of movement, the second release A650 operably connected with the first release A620. When the second release A650 is in the locked position, the first release A620 is in the locked position, and when the second release A650 is in the unlocked position, the first release A620 is in the unlocked position. Downward sliding of the slide A410 relative to the frame assembly A100 drives the second release A650 from the locked position to the unlocked position. As such, upon downward depression of the pedal A430, the second locking assembly A600 is also unlocked to allow for the collapsing of the vehicle A1000 without the need to perform additional operations to unlock the second locking assembly A600.

[0176] Referring to FIGS. 26-27, 31, and 38-39, in some embodiments, the second locking assembly A600 can further include a second support base A660 and a driving member A680. The second support base A660 is disposed on the rear rod A121 of the rear frame A120 of the frame assembly A100 and has a third guide portion A670 extending in a direction perpendicular to the sliding direction of the sliding member A410. The second release member A650 is disposed in the second support base A660 and is slidable along the third guide portion A670 in the extending direction thereof between the locked position and the released position by sliding engagement with the third guide portion A670, and has a fourth guide pin A651. The driving member A680 is connected to the first release member A620 via a connecting member A690, and is provided with a fourth guide slot A681 extending obliquely with respect to the moving direction of the second release member A650, and the fourth guide pin A651 extends into the fourth guide slot A681 and is in sliding engagement with the fourth guide slot A681. In this way, when the second release member A650 is switched between the locked position and the released position along the extending direction of the third guide portion A670, the driving member A680 is driven by the engagement of the fourth guide pin A651 with the fourth guide slot A681, and the first release member A620 is switched between the locked position and the released position via the connecting member A690. The connecting member A690 is a member connecting between the driving member A680 and the first release member A620 and conducting the movement of the driving member A680 to the first release member A620. In the example shown in the figures, the connecting member A690 can be, for example, a rigid wire made of stainless steel. In other examples, the connecting member A690 can also be, for example, a nylon wire tensioned between the driving member A680 and the first release member A620, or a linkage connected between the driving member A680 and the first release member A620, or directly integrated with the driving member A680 and the first release member A620, or other suitable mechanisms or materials. The third guide portion A670 can have different configurations. For example, in some embodiments, the third guide portion A670 can include a third guide slot A670a disposed in the second support base A660, the third guide slot A670a extending in a direction perpendicular to the sliding direction of the sliding member A410, and the second release member A650 is disposed in the third guide slot A670a and is slidable along the extending direction of the third guide slot A670a. Alternatively or additionally, in some embodiments, the third guide portion A670 can include a seventh guide slot A670b disposed in the second support base A660, the seventh guide slot A670b extending in a direction perpendicular to the sliding direction of the sliding member A410, and the fourth guide pin A651 of the second release member A650 extends into the seventh guide slot A670b and is in sliding engagement with the seventh guide slot A670b and is slidable along the extending direction of the seventh guide slot A670b.

[0177] Referring to FIG. 28, in some embodiments, the second release A650 is extended from the opening of the rear rod A121 side wall A1211 of the rear wheel frame A120 when the second release A650 is in the locked position, and referring to FIG. 40, the second release A650 is retracted from the opening of the rear rod A121 side wall A1211 of the rear wheel frame A120 and accommodated in the rear rod A121 of the rear wheel frame A120 when the second release A650 is in the unlocked position. Referring to FIGS. 28, 34, 36 and 40, the lower side of the slider A410 can have a first pressing portion A412, for example, in the example shown in the figures, the first pressing portion A412 can be located at the position of the lower side of the slider A410 immediately adjacent to the rear rod A121 and opposite to the second release A650. The upper side of the portion of the second release A650 that can be extended from the opening of the rear rod A121 side wall A1211 can have a first inclined surface A652 extending obliquely with respect to the sliding direction of the slider A410. In this way, when the slider A410 is slid downward relative to the rear rod A121 of the frame assembly A100 and contacts the second release A650, further downward sliding of the slider A410 relative to the rear rod A121 of the frame assembly A100 causes the first pressing portion A412 to press against the first inclined surface A652 to drive the second release A650 to move from the locked position to the unlocked position.

[0178] In the above embodiment of the present application with the second release A650, referring to FIG. 28, when the carrier A1000 is in the unfolded state, the second release A650 can be in the locked position protruding from the side wall of the rear rod A121, and the slider A410 can be at a position higher than the second release A650 on the rear rod A121 and can be spaced apart from the second release A650 to avoid pressing the second release A650. In some embodiments, the upper side of the slider A410 can have a second pressing portion A413, for example, in the example in FIG. 28, the second pressing portion A413 can be located at the position on the upper side of the slider A410 closest to the rear rod A121 and opposite to the second release A650; the lower side of the part of the second release A650 protruding from the opening of the side wall A1211 of the rear rod A121 can also have a second inclined surface A653 extending obliquely relative to the sliding direction of the slider A410. When the carrier A1000 is folded and in the folded state, referring to FIG. 41, the slider A410 can be at a position lower than the second release A650 on the rear rod A121 and can be spaced apart from the second release A650 to avoid pressing the second release A650. In such embodiments, during the folding of the carrier A1000, when the slider A410 slides downward relative to the rear rod A121, it will first press the second release A650 to press the second release A650 into the rear rod A121 to reach its unlocked position and drive the first release A620 to the unlocked position, thereby releasing the second locking assembly A600 and allowing the seat assembly A300 to be folded to its folded state, and then the slider A410 will continue to slide downward beyond the second release A650 and slide below the second release A650, thereby removing the pressing of the second release A650 to allow the second release A650 to pop out of the rear rod A121 to its locked position, and the first release A620 returns to the locked position, thereby locking the second locking assembly A600 again. In this way, when the carrier A1000 is folded to the folded state, the second locking assembly A600 is in the locked state, thereby allowing the carrier A1000 to remain in the folded state, and the folding is more stable.When it is needed to unfold the carrier A1000 for use again, the sliding member A410 can be pushed upward by the stepping member A430 to slide upward relative to the rear rod member A121 of the frame assembly A100 and to contact the second release member A650, further upward sliding of the sliding member A410 relative to the rear rod member A121 of the frame assembly A100 drives the second pressing portion A413 to press against the second inclined surface A653 to drive the second release member A650 to move from the locked position to the unlocked position, and to drive the first release member A620 to move to the unlocked position, thereby releasing the second locking assembly A600 and enabling the seat assembly A300 to be unfolded to its unfolded state, and then unfolding the whole carrier A1000, after that further upward sliding of the sliding member A410 relative to the rear rod member A121 of the frame assembly A100 above the second release member A650, the second release member A650 is ejected from the rear rod member A121 to its locked position, and the first release member A620 moves to the locked position, thereby locking the second locking assembly A600 again to keep the carrier A1000 in the unfolded state. In addition, in some embodiments, when the carrier A1000 is folded and in the folded state, the sliding member A410 can also be at the position of the second release member A650 and keep pressing against the second release member A650, thereby keeping the second locking assembly A600 in the released state. In such embodiments, the sliding member A410 can not have the second pressing portion A413 as described above, but the second release member A650 can still have the second inclined surface A653 or other similar smooth structure to make the upward sliding of the stepping member A430 more smooth and avoid being stuck by the second release member A650. In this way, when it is needed to unfold the carrier A1000 for use again, the second locking assembly A600 is already in the released state when the sliding member A410 is pushed upward by the stepping member A430, thereby enabling the carrier A1000 to be unfolded to the unfolded state more quickly, after that further upward sliding of the sliding member A410 relative to the rear rod member A121 of the frame assembly A100 above the second release member A650, the second release member A650 is ejected from the rear rod member A121 to its locked position, and the first release member A620 moves to the locked position, thereby locking the second locking assembly A600 again.

[0179] In embodiments incorporating features of the above embodiments, referring to Figs. 20-43, the carrier A1000 can be switched between the unfolded state and the folded state by the following procedures.

[0180] In use, the vehicle A1000 is in the unfolded state, and both the first locking assembly A450 and the second locking assembly A600 are in the locked state. As mentioned previously, when the vehicle A1000 is to be folded, the rider assembly A200 needs to be in a fixed state where the movement of the rider assembly A200 relative to the front frame A110 is restricted, so that the movement of the rider assembly A200 can drive the front frame A110 to move. For example, when the vehicle A1000 is in the unfolded state and in the first use state (Fig. 20 and Fig. 25) or the second use state (Fig. 42), the rider assembly A200 is in the locked state, i.e. the rider assembly A200 is already in the aforementioned fixed state, so no additional locking operation is needed to be performed on the rider assembly A200. For example, when the vehicle A1000 is in the unfolded state and in the third use state (Fig. 32), the rider assembly A200 is in the unlocked state, so the user can first switch the rider assembly A200 to the locked state (e.g. by rotating and locking the rider assembly A200, from Fig. 32 to Fig. 42) so that the rider assembly A200 is switched to the aforementioned fixed state. In addition, in the example where the rider assembly A200 is fixedly connected to the front frame A110, the rider assembly A200 is by default in the aforementioned fixed state, so no additional locking operation is needed to be performed on the rider assembly A200. Hereinafter, the first use state of the vehicle A1000 is taken as an example for detailed description. When the vehicle A1000 needs to be folded, as shown in Fig. 22, the user can first step down the stepping member A430, and at the same time, push the rider assembly A200 to move in the first rotation direction R1, and drive the front frame A110 to move together. When the stepping member A430 is stepped down, the downward force applied to the stepping member A430 first drives the stepping member A430 to rotate downward, i.e. the pivot portion A433 of the stepping member A430 rotates in the second rotation direction R2 shown in the drawing, and the rotation of the pivot portion A433 in turn drives the locking portion A4513 of the first locking member A451 to disengage from the first locking portion A452 to release the locking with the first locking portion A452, so that the first locking assembly A450 is released and switched to the unlocked state (Fig. 33 and Fig. 34). After the first locking member A451 is released, the continued stepping of the stepping member A430 drives the sliding member A410 to slide downward along the rear rod member A121, and at the same time, the upward and forward (i.e. the first rotation direction R1) pushing of the rider assembly A200 by the user makes the rider assembly A200 rotate in the first rotation direction R1, and drives the front frame A110 to rotate in the first rotation direction R1 as well. The rotation of the front rod member A111 of the front frame A110 in the first rotation direction R1 further drives the sliding member A410 to slide downward along the rear rod member A121 of the rear frame A120 via the second linkage member A440. In this way, the stepping of the stepping member A430 by the user and the upward and forward pushing of the rider assembly A200 by the user jointly drive the sliding member A410 to slide downward along the rear rod member A121 of the rear frame A120.When the slider A410 slides to contact the second release A650 on the rear rod A121 (Fig. 35 and Fig. 36), as the slider A410 continues to slide downward, the first pressing portion A412 on the lower side of the slider A410 presses against the first inclined surface A652 of the second release A650, and pushes the second release A650 to the inside of the rear rod A121 to reach its unlocked position (Fig. 37 and Fig. 40). During the movement of the second release A650 to its unlocked position inside the rear rod A121, the fourth guide pin A651 cooperates with the fourth guide slot A681 to cause the driving member A680 to move downward along the rear rod A121. The downward movement of the driving member A680 along the rear rod A121 causes the first release A620 to move downward along the rear rod A121 to its unlocked position via the connecting member A690. During the downward movement of the first release A620 along the rear rod A121 to its unlocked position, the third guide pin A611 cooperates with the third guide slot A621 to cause the second locking member A610 to move along the extension direction of the second guide portion A631 from the third locking portion in the rear rod A121 to its release position, thereby causing the second locking assembly A600 to be unlocked and switched to the release state (Fig. 37 to Fig. 39). After the second locking assembly A600 is unlocked, the adjustment member A500 can be extended or retracted relative to the rear rod A121. At this time, the adjustment member A500 and the first pivot point AQ1 of the seat assembly A300 act as a fulcrum, and as the slider A410 continues to slide downward relative to the rear rod A121, a downward pulling force is applied to the second pivot point AQ2 of the seat assembly A300 via the first connecting member A420, pulling the seat assembly A300 to rotate in the second rotation direction R2 from its unfolded state (either the first use state or the second use state) until it is inverted from the unfolded state to the folded state (for example, switched from Fig. 22 to Fig. 23 and then to Fig. 24). During the above process, other components in the vehicle A1000 are also gradually driven to the folded state, for example, the pushing of the driver assembly A200 causes the front wheel frame A110 to rotate in the first rotation direction R1 to pivot and fold the front wheel frame A110 relative to the rear wheel frame A120 to the folded state, and for example, the downward sliding of the slider A410 causes the first connecting member A420 and the second connecting member A440 to fold towards the rear rod A121 of the rear wheel frame A120, and the slider A410 slides down to a position at or a distance below the second release A650 described in the foregoing embodiments, thereby folding the connecting assembly A400 to the folded state, and thus the folding of the entire vehicle A1000 is completed (Fig. 41).Furthermore, in the telescoping embodiment of the rider assembly A200, the rider assembly A200 can be further shortened (Fig. 41) after the above process by retracting the upper support pole A211 and the lower support pole A212 to further reduce the size of the vehicle A1000 when collapsed.

[0181] When the carrier A1000 is folded and in the folded state, the user can manually lift the rear side of the seat assembly A300 upward (as shown in FIG. 24, rotate in the first rotation direction R1), while pressing the rear side of the driver assembly A200 downward (as shown in FIG. 24, rotate in the second rotation direction R2). The lifting of the rear side of the seat assembly A300 drives the seat assembly A300 to rotate in the first rotation direction R1, thereby driving the slider A410 to move upward relative to the rear rod A121 via the first linkage A420, and the pressing of the rear side of the driver assembly A200 drives the front wheel frame A110 to pivot relative to the rear wheel frame A120 in the second rotation direction R2, the rotation of the front wheel frame A110 in the second rotation direction R2 also drives the slider A410 to move upward relative to the rear rod A121 via the second linkage A440, thus, the two jointly drive the slider A410 to slide upward relative to the rear rod A121. As described above, the slider A410 can press the second release A650 to keep the second locking assembly A600 in the released state at the position of the second release A650 in the folded state, or the slider A410 can slide upward from a position below the second release A650 to the position of the second release A650 to press the second release A650 to release the second locking assembly A600. Since the second locking assembly A600 is released, the user can adjust the unfolded angle of the seat assembly A300 by the adjustment member A500. In this state, by continuing to lift the rear end of the seat assembly A300 upward to rotate the seat assembly A300 in the first rotation direction R1, the rotation of the seat assembly A300 in the first rotation direction R1 can drive the adjustment member A500 to move to the corresponding position relative to the rear rod A121 via the second pivot point AQ2. In the state that the second locking assembly A600 is released, the user can lift and rotate the seat assembly A300 to the desired unfolded state (unfolded to the first use state or the second use state, etc. according to the use needs) as needed. After the seat assembly A300 reaches the desired unfolded state, the user can continue to move the slider A410 upward relative to the rear rod A121 to pass the second release A650, the second release A650 pops out from the side wall A1211 of the rear rod A121 to its locking state, and the first release A620 and / or the return force provided by the second return member also drives the first release A620 to move to the locking state to lock the second locking assembly A600, thereby locking the seat assembly A300 in the desired unfolded state.Meanwhile, other components in the vehicle A1000 are also switched to their unfolded states, for example, the upward sliding of the sliding member A410 also pushes the front wheel frame A110 to pivot open relative to the rear wheel frame A120 by the second linkage member A440 to switch the frame assembly A100 to its unfolded state, and for example, the upward sliding of the sliding member A410 drives the first linkage member A420 and the second linkage member A440 to unfold relative to the rear rod member A121 of the rear wheel frame A120; after the sliding member A410 moves upward to pass the second release member A650, the sliding member A410 can continue to move to the first locking portion A452, when the first locking member A451 aligns with the first locking portion A452, the pivot portion A433 can be rotated in the first rotation direction R1 to push the first locking member A451 into the first locking portion A452 to lock with the first locking portion A452 by the restoring force provided by the first restoring member A460, so as to lock the first locking assembly A450, and the linkage assembly A400 is unfolded to the unfolded state, thus, the unfolding and locking of the entire vehicle A1000 are completed. In addition, in the embodiment in which the rider assembly A200 is telescopic and is shortened when folded, the rider assembly A200 can also be lengthened by the stretching between the upper support rod A211 and the lower support rod A212 to facilitate use. It should be noted that the folding and unfolding processes of the vehicle A1000 in the second use state or the third use state are similar to those in the first use state, which will not be described here.

[0182] In addition, the carrier A1000 can also have an anti-misoperation configuration when carrying a child or the like, to avoid the carrier A1000 from being accidentally folded due to misoperation and causing the child or pet carried to be injured. In one embodiment, when the carrier A1000 carries a load, in the state that the first locking member A452 is locked with the first locking portion A452, the gravity of the load drives the first locking member A452 to press against the first locking portion A452 to provide a frictional resistance between the first locking member A452 and the first locking portion A452, to prevent the movement of the first locking member A452 relative to the first locking portion A452, thereby preventing the first locking member A452 from being unlocked with the first locking portion A452, and further preventing the folding of the carrier A1000. For example, when the seat assembly A300 carries a load such as a child or a pet, under the gravity of the load, a downward force is applied to the seat assembly A300, which is transmitted to the slider A410 of the linkage assembly A400 via the second pivot point AQ2 and the first linkage member A420, so that the slider A410 also has a downward sliding tendency relative to the rear rod member A121 of the rear frame A120. At this time, since the carrier A1000 is in the unfolded state and the first locking assembly A450 is in the locked state, the first locking member A451 extends into the first locking portion A452 and is locked with the first locking portion A452, so that the downward force applied to the slider A410 can drive the first locking member A452 to press against the first locking portion A452 to press the first locking member A451 and the first locking portion A452 tightly. For example, the first locking portion A452 can be a lock hole structure, the locking portion A4513 extending into the lock hole can be pressed against the edge of the lock hole, or other forms of the first locking member A451 can be pressed against the first locking portion A452, thereby increasing the frictional resistance between the first locking member A451 and the first locking portion A452 to prevent the first locking member A451 from being separated from the first locking portion A452. In this state, even if the pedal A430 is pressed downward due to misoperation or the like, the first locking member A451 will not be unlocked with the first locking portion A452, thereby avoiding the carrier A1000 from being folded and falling to injure the child or pet sitting in the seat assembly A300. When the seat assembly A300 does not carry a load such as a child or a pet, the downward force borne by the slider A410 is smaller, and the first locking member A451 will not press the first locking portion A452 tightly, thereby enabling the unlocking operation of the first locking member A451 and the first locking portion A452 to be performed smoothly.Further, in the above embodiment where the first locking member A451 comprises the sleeve A4512, the locking portion A4513, the first guide pin A4511, the second guide pin A4514 and the elastic member A4515, the elastic configuration of the first locking member A451 can also facilitate the anti-misfold configuration when there is a load such as a child or a pet in the carrier A1000. Specifically, when the treading member A430 applies a force to the sleeve A4512 via the first guide pin A4511 on the sleeve A4512 towards the release of the first locking member A451, the force is not directly and rigidly transmitted to the locking portion A4513, but is transmitted to the locking portion A4513 via the second guide pin A4514 after being buffered by the elastic member A4515, i.e. the release force applied by the treading member A430 to the first locking member A451 needs to be transmitted to the locking portion A4513 via the elastic member A4515. When there is a load such as a child or a pet in the seat assembly A300, since the locking portion A4513 is pressed against the first locking portion A452 (e.g. the locking hole edge of the side wall A1211 of the rear rod member A121), the force applied by the sleeve A4512 will be buffered and partially absorbed by the elastic member A4515, the elastic force generated by the elastic deformation of the elastic member A4515 is smaller than the frictional resistance between the first locking member A451 and the first locking portion A452, and the elastic force is not sufficient to pull the locking portion A4513 out of the first locking portion A452 to release the locking, thereby preventing the undesired folding and collapsing of the carrier A1000, which can cause the load such as a child or a pet to be injured, and at the same time, the locking portion A4513 or the first locking portion A452 is not easily damaged. When there is no load such as a child or a pet in the seat assembly A300, since the locking portion A4513 is not pressed against the first locking portion A452, the frictional resistance between the first locking member A451 and the first locking portion A452 is small or negligible, and the elastic force generated by the elastic deformation of the elastic member A4515 is greater than the frictional resistance between the first locking member A451 and the first locking portion A452, and the elastic force is sufficient to pull the locking portion A4513 out of the first locking portion A452 to release the first locking member A451, at which time, the user can tread the treading member A430 to fold the carrier A1000 as described above.

[0183] Any combination of the above-described technical features of the embodiments can be made. For the sake of brevity, not all possible combinations are described, however, it is to be understood that any combination of the features is within the scope of the present specification.

[0184] The above embodiments only express several implementation ways of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation to the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A carrier, characterized by The utility model relates to a vehicle frame assembly, comprising: a vehicle frame assembly; a seat assembly rotatable relative to the vehicle frame assembly and having a first use state and a second use state; and a linkage mechanism connected between the seat assembly and the vehicle frame assembly for allowing or restricting the seat assembly to switch between the first use state and the second use state.

2. The carrier of claim 1, wherein, The linkage mechanism comprises: a first linkage member pivotally connected between the seat assembly and the vehicle frame assembly; an adjusting member movably arranged on the vehicle frame assembly and pivotally connected with the seat assembly; and a locking assembly arranged between the adjusting member and the vehicle frame assembly and adapted to restrict or allow the adjusting member to move relative to the vehicle frame assembly.

3. The vehicle of claim 2, wherein: the locking assembly has a locked state and an unlocked state; when the locking assembly is in the locked state, the adjusting member is fixed relative to the vehicle frame assembly to restrict the seat assembly to switch between the first use state and the second use state; and when the locking assembly is in the unlocked state, the adjusting member is movable relative to the vehicle frame assembly to allow the seat assembly to switch between the first use state and the second use state.

4. The carrier of claim 2, wherein, The locking assembly comprises: a first locking member movable relative to the vehicle frame assembly and the adjusting member and having a locked position and an unlocked position; a first locking portion arranged on the adjusting member; and a second locking portion arranged on the seat assembly; when the first locking member is in the locked position, the first locking member is in locking engagement with the first locking portion and the second locking portion to restrict the adjusting member to move relative to the vehicle frame assembly; and when the first locking member is in the unlocked position, the first locking member is out of locking engagement with the first locking portion and the second locking portion to allow the adjusting member to move relative to the vehicle frame assembly.

5. The carrier of claim 4, wherein, The second locking portion comprises: a first locking hole, when the first locking member is in locking engagement with the first locking hole, the seat assembly is in the first use state; and a second locking hole, when the first locking member is in locking engagement with the second locking hole, the seat assembly is in the second use state.

6. The vehicle of claim 4, wherein: the locking assembly further comprises an unlocking member having a locking position and an unlocking position in a movement path thereof, the unlocking member being operatively connected with the first locking member; when the unlocking member is in the locking position, the first locking member is in the locked position, and when the unlocking member is in the unlocking position, the first locking member is in the unlocked position.

7. The vehicle of claim 6, wherein: the locking assembly further comprises a support seat and a guide member, the support seat being arranged on the adjusting member and having a first guide portion, the first guide portion extending in a direction perpendicular to a movement direction of the unlocking member, the first locking member being movably arranged on the support seat, the guide member extending through the first locking member and into the first guide portion. The release member is provided with a second guide portion which extends obliquely relative to the moving direction of the release member, and the guide member can extend into the second guide portion and slide with the second guide portion; When the release member switches between the locking position and the release position, the first locking member can switch between the locking position and the release position through the cooperation of the guide member with the first guide portion and the second guide portion.

8. The carrier of claim 6, wherein, The locking assembly further comprises a first reset member which provides elastic return force for the release member to keep the release member in the locking position.

9. The carrier according to any one of claims 1 to 8, wherein The seat assembly comprises a surrounding frame in a closed frame type in the circumferential direction; When the seat assembly is in the first use state, the surrounding frame is arranged at an angle with the horizontal plane; When the seat assembly is in the second use state, the surrounding frame is arranged parallel to the horizontal plane.

10. The vehicle of claim 9, wherein, When the seat assembly is in the second use state, a placing plate is placed at the opening of the surrounding frame, so that the carrier is used as a table.

11. The carrier of any one of claims 1 to 8, wherein, The positioning assembly further comprises a handle assembly which is pivoted to the frame assembly so that the carrier has a trailer mode, a trolley mode and a cradle mode.

12. The vehicle of claim 11, wherein, When the carrier is in the trolley mode, the handle assembly is located at the first side of the frame assembly and is arranged at an angle with the horizontal plane; When the carrier is in the trailer mode, the handle assembly is located at the second side of the frame assembly and is arranged at an angle with the horizontal plane; When the carrier is in the cradle mode, the handle assembly is arranged parallel to the horizontal plane; The second side is arranged opposite to the first side relative to the moving direction of the carrier.

13. The carrier of claim 11, wherein, The frame assembly is provided with a first limiting member, and the handle assembly is provided with a clamping member which is adapted to be clamped with the first limiting member so that the carrier is in the trolley mode.

14. The vehicle of claim 13, wherein, The frame assembly is provided with a second limiting member which is adapted to be clamped with the handle assembly so that the carrier is in the cradle mode.

15. The carrier of claim 14, wherein, The handle assembly and the frame assembly are pivoted at a first pivot point, and the first limiting member and the second limiting member are arranged at intervals in the circumferential direction of the first pivot point.

16. A vehicle characterized by, Comprise: a frame assembly; a handle assembly connected to the frame assembly; a seat assembly pivoted to the frame assembly and forming a first pivot point; and a linkage assembly pivoted to the seat assembly and forming a second pivot point, and which can slide relative to the frame assembly; The sliding of the linkage assembly relative to the frame assembly and the rotation of the handle assembly in a first rotation direction drive the seat assembly to switch from an unfolded state to a folded state. The linkage assembly comprises:

17. The vehicle of claim 16, wherein, a sliding member slidingly connected to the frame assembly; a first linkage member having one end pivoted to the seat assembly and forming the second pivot point and the other end pivoted to the sliding member; and a treading member connected to the sliding member; ​ The rotation of the stepping member drives the sliding member to slide relative to the frame assembly, and drives the seat assembly to switch from the unfolded state to the folded state via the first linkage member.

18. The vehicle of claim 17, wherein, The linkage assembly further comprises: A second linkage member, one end of which is pivotally connected to the frame assembly, and the other end of which is pivotally connected to the sliding member; The rotation of the driver assembly in the first rotation direction drives the frame assembly to rotate in the first rotation direction, and drives the sliding member to slide relative to the frame assembly via the second linkage member.

19. The vehicle of claim 17, wherein, The linkage assembly further comprises: A first locking assembly arranged between the sliding member and the frame assembly, and switchable between a locked state of limiting the sliding of the sliding member relative to the frame assembly and an unlocked state of allowing the sliding of the sliding member relative to the frame assembly.

20. The vehicle of claim 19, wherein, The first locking assembly comprises: A first locking member arranged on the sliding member, movable relative to the frame assembly and having a locked position and an unlocked position; and A first locking matching portion arranged on the frame assembly; When the first locking member is in the locked position, the first locking member and the first locking matching portion are locked to limit the sliding of the sliding member relative to the frame assembly; when the first locking member is in the unlocked position, the first locking member and the first locking matching portion are unlocked to allow the sliding of the sliding member relative to the frame assembly.

21. The vehicle of claim 20, wherein, The stepping member has a pivot portion, the stepping member is pivotally connected to the sliding member via the pivot portion, the pivot portion of the stepping member is drivingly connected with the first locking member, and the stepping member has a locking position and an unlocking position on its rotation path relative to the sliding member; When the stepping member rotates relative to the sliding member to the unlocking position in a second rotation direction, the first locking member moves to the unlocked position, and when the stepping member rotates relative to the sliding member to the locking position in a first rotation direction, the first locking member moves to the locked position.

22. The vehicle of claim 21, wherein, The linkage assembly further comprises: A first reset member providing the stepping member with an elastic restoring force tending to switch the stepping member to the locking position.

23. The vehicle of claim 19, wherein, A stop portion is arranged on the sliding member, and when the stepping member rotates upward relative to the sliding member to an upper limit position in the first rotation direction, the stop portion abuts against the stepping member to prevent further upward rotation of the stepping member.

24. The vehicle of claim 21, wherein: The first locking member is movably arranged on the sliding member and has a first guide pin; The pivot portion of the stepping member has a first guide groove, and the first guide pin extends into the first guide groove and slidably matches with the first guide groove; When the stepping member rotates relative to the sliding member between the locking position and the unlocking position, the first locking member is driven to slide between the locked position and the unlocked position along a direction transverse to the sliding direction of the sliding member through the matching of the first guide pin and the first guide groove.

25. The vehicle of claim 24, wherein, The first locking member comprises: a sleeve, a second guide slot being arranged on the sleeve, the second guide slot extending perpendicularly to the sliding direction of the sliding member, and the first guide pin being arranged on the sleeve; a locking portion movably arranged in the sleeve, the locking portion extending into the first locking portion and being locked with the first locking portion when the first locking member is in the release position, the locking portion being withdrawn from the first locking portion and being unlocked with the first locking portion when the first locking member is in the locking position; a second guide pin connected to the locking portion, the second guide pin extending into the second guide slot and being slidably fitted with the second guide slot; and a resilient member connected between the second guide pin and the sleeve.

26. The vehicle of claim 20, wherein, The carrier further comprises: an adjusting member movably arranged on the frame assembly and pivotally connected with the seat assembly; and a second locking assembly arranged between the adjusting member and the frame assembly and having a locking state and a release state; wherein the adjusting member is fixed relative to the frame assembly to restrict the seat assembly from switching between the unfolded state and the folded state when the second locking assembly is in the locking state, and the adjusting member is movable relative to the frame assembly to allow the seat assembly to switch between the unfolded state and the folded state when the second locking assembly is in the release state.

27. The vehicle of claim 26, wherein, The second locking assembly comprises: a second locking member movable relative to the frame assembly and the adjusting member and having a locking position and a release position; a second locking portion arranged on the adjusting member; and a third locking portion arranged on the frame assembly; wherein the second locking member is locked with the second locking portion and the third locking portion to restrict the adjusting member from moving relative to the frame assembly when the second locking member is in the locking position, and the second locking member is unlocked with the third locking portion to allow the adjusting member to move relative to the frame assembly when the second locking member is in the release position.

28. The vehicle of claim 27, wherein, The second locking assembly further comprises: a first release member having a locking position and an unlocking position in the movement path thereof, the first release member being drivingly connected with the second locking member; wherein the second locking member is in the locking position when the first release member is in the locking position, and the second locking member is in the release position when the first release member is in the unlocking position.

29. The vehicle of claim 28, wherein, The second locking assembly further comprises: a first support seat arranged on the adjusting member and having a second guide portion extending perpendicularly to the movement direction of the first release member; the second locking member being arranged in the first support seat and being slidable along the second guide portion between the locking position and the release position by the sliding cooperation with the second guide portion, the second locking member having a third guide pin; The first release member is provided with a third guide slot extending obliquely relative to the moving direction of the first release member, and the third guide pin extends into the third guide slot and is in sliding fit with the third guide slot; When the first release member is switched between the locking position and the release position, the second locking member is driven to slide along the extending direction of the second guide portion between the locking position and the release position through the fit of the third guide pin and the third guide slot.

30. The vehicle of claim 29, wherein, The second locking assembly further comprises: A second reset member providing the first release member with an elastic restoring force tending to switch the first release member to the locking position.

31. The vehicle of claim 28, wherein, The second locking assembly further comprises: A second release member provided on the vehicle frame assembly, the second release member having a locking position and an unlocking position on its moving path, and the second release member is in driving connection with the first release member; When the second release member is in the locking position, the first release member is in the locking position, and when the second release member is in the unlocking position, the first release member is in the unlocking position; The sliding of the sliding member relative to the vehicle frame assembly drives the second release member to move from the locking position to the unlocking position.

32. The vehicle of claim 31, wherein, The second locking assembly further comprises: A driving member connected to the first release member via a connecting member, the driving member is provided with a fourth guide slot extending obliquely relative to the moving direction of the second release member, and the second release member has a fourth guide pin extending into the fourth guide slot and in sliding fit with the fourth guide slot; When the second release member is switched between the locking position and the unlocking position, the driving member is driven to switch the first release member between the locking position and the unlocking position via the connecting member through the fit of the fourth guide pin and the fourth guide slot.

33. The vehicle of claim 31, wherein, The second locking assembly further comprises: A second support seat provided on the vehicle frame assembly and having a third guide portion, the extending direction of the third guide portion being perpendicular to the sliding direction of the sliding member; the second release member is arranged in the second support seat and can slide along the extending direction of the third guide portion between the locking position and the release position through the sliding fit with the third guide portion.

34. The vehicle of claim 31, wherein The sliding member has a first pressing portion; The second release member has a first inclined surface extending obliquely relative to the sliding direction of the sliding member; When the sliding member slides downward relative to the vehicle frame assembly and contacts the second release member, further downward sliding of the sliding member relative to the vehicle frame assembly causes the first pressing portion to press against the first inclined surface to drive the second release member to move from the locking position to the unlocking position.

35. The vehicle of claim 34, wherein The sliding member has a second pressing portion; The second lock releasing member has a second inclined surface extending obliquely relative to a sliding direction of the sliding member; When the sliding member slides upward relative to the frame assembly and contacts the second lock releasing member, further upward sliding of the sliding member relative to the frame assembly causes the second pressing portion to press against the second inclined surface to drive the second lock releasing member to move from the locked position to the unlocked position.

36. The vehicle of claim 23, wherein, When the vehicle carries a load, the gravity of the load drives the first locking member to press against the first lock matching portion to provide a frictional resistance between the first locking member and the first lock matching portion to prevent the first locking member from being unlocked from the first lock matching portion.

37. The vehicle of claim 19, wherein, The rider assembly is pivotally connected to the frame assembly, and the rider assembly is switchable between a locked state in which rotation of the rider assembly relative to the frame assembly is limited and an unlocked state in which rotation of the rider assembly relative to the frame assembly is allowed; When the rider assembly is in the locked state, movement of the rider assembly can drive the frame assembly to move.

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