Carrier and positioning assembly thereof

Abstract

The invention relates to a carrier and a positioning assembly thereof, the positioning assembly comprises a first positioning assembly and a second positioning assembly, the first positioning assembly is rotatably arranged on the second positioning assembly, the first positioning assembly is used for being detachably connected with a carrier body, and the carrier body is a first carrier body or a second carrier body; when the first positioning assembly is used for being connected with the first carrier body and rotates to face the first direction relative to the second positioning assembly, the first positioning assembly can limit the first carrier body to be separated from the first positioning assembly. When the first positioning assembly is used for being connected with the second carrier body, the first positioning assembly is limited to rotate to the first direction relative to the second positioning assembly.

Description

Technical Field

[0001] The present application relates to the technical field of baby products, and in particular to a vehicle and its positioning component. Background Art

[0002] At present, the positioning components on the market usually have the function of being compatible with different types of vehicle bodies, such as being compatible with baby safety carriers and child safety seats. Each type of vehicle body can be rotatably mounted on the positioning component so that the user can adjust its direction according to actual needs. However, due to the differences in the applicable directions of different types of vehicle bodies in use, if the user misuses the direction of the vehicle body, potential safety hazards may be brought. Summary of the Invention

[0003] Based on this, in view of the above problems, it is necessary to provide a vehicle and its positioning component, which can selectively allow or restrict the detachment of the vehicle body, and at the same time, can selectively restrict the rotation angle of the vehicle body.

[0004] The present application provides a positioning component, including a first positioning component and a second positioning component. The first positioning component is rotatably arranged on the second positioning component, and the first positioning component is used for detachably connecting the vehicle body. The vehicle body is a first vehicle body or a second vehicle body. Wherein, when the first positioning component is used to connect with the first vehicle body and rotates relative to the second positioning component to face the first direction, the first positioning component can restrict the first vehicle body from detaching from the first positioning component; when the first positioning component is used to connect with the second vehicle body, the first positioning component is restricted from rotating relative to the second positioning component to face the first direction.

[0005] In one embodiment, it further includes: a first connection mechanism, which is arranged on the first positioning component and has a locked state and an unlocked state. When the first connection mechanism is in the locked state, the first connection mechanism is connected to the vehicle body. When the first connection mechanism is in the unlocked state, the first connection mechanism is detached from the vehicle body; and a first limiting mechanism, which is arranged between the first positioning component and the second positioning component and is used for selectively allowing or restricting the first connection mechanism to switch between the locked state and the unlocked state.

[0006] In one embodiment, it further includes: a locking and holding mechanism movably disposed on the first positioning component and used to hold the connection between the first connection mechanism and the vehicle body; wherein, when the first positioning component is used to connect the first vehicle body and faces the first direction, the first limiting mechanism enters the moving path of the locking and holding mechanism to limit the movement of the locking and holding mechanism, so as to limit the switching of the first connection mechanism from the locked state to the unlocked state.

[0007] In one embodiment, the first limiting mechanism includes: a first limiting groove provided on the side of the second positioning component facing the first positioning component; and a first limiting member movably disposed on the first positioning component and capable of inserting into or withdrawing from the first limiting groove; wherein, when the first limiting member inserts into the first limiting groove, the first limiting member allows the first connection mechanism to switch to the unlocked state; when the first limiting member withdraws from the first limiting groove, the first limiting member restricts the first connection mechanism from switching to the unlocked state; and when the first positioning component rotates relative to the second positioning component to face the first direction, the first limiting member withdraws from the first limiting groove.

[0008] In one embodiment, the first positioning component has a rotation axis, and the first limiting member is disposed offset from the rotation axis; define the straight line passing through the rotation axis and perpendicular to the first direction as the reference straight line. When the first positioning component faces the first direction, the first limiting member and the first limiting groove are misaligned and located on both sides of the reference straight line respectively.

[0009] In one embodiment, the first positioning component is a circular structure, the rotation axis is the center of the first positioning component, the first limiting groove is a semi-circular groove, and the radius of the semi-circular groove is the distance between the first limiting member and the center of the first positioning component. When the first positioning component rotates relative to the second positioning component to face away from the first direction, the first limiting member is located at the midpoint of the first limiting groove.

[0010] In one embodiment, a sliding inclined surface is provided at one end of the first limiting member facing the second positioning component, and the sliding inclined surface can push against the first limiting groove to move the first limiting member out of the first limiting groove in a direction away from the second positioning component.

[0011] In one embodiment, the first limiting mechanism further includes a first reset member, and the first reset member is used to provide an elastic restoring force for the first limiting member to drive the first limiting member to insert into the first limiting groove.

[0012] In one embodiment, the first positioning assembly includes: a first housing having a first installation cavity, and the first housing is further provided with a first limiting hole communicating with the first installation cavity. The first limiting member is movably disposed in the first installation cavity, and at least a part of the first limiting member can extend out of the first installation cavity through the first limiting hole.

[0013] In one embodiment, the first connection mechanism includes a clamping hook, which is pivotally connected to the first housing and has a locking position and an unlocking position; when the clamping hook is in the locking position, the clamping hook is used to be clamped and locked with the vehicle body.

[0014] In one embodiment, it further includes: a locking and holding mechanism, which is movably disposed in the first installation cavity. When the clamping hook is driven to the locking position, the locking and holding mechanism is used to lock the clamping hook in the locking position.

[0015] In one embodiment, the locking and holding mechanism includes a first locking member, which is movably disposed in the first installation cavity and has a first position and a second position; one of the first locking member and the clamping hook is provided with a locking groove, and the other is provided with a clamping portion; when the first locking member is in the first position, the locking groove is engaged with the clamping portion to lock the clamping hook in the locking position; when the first locking member is in the second position, the locking groove is separated from the clamping portion to allow the clamping hook to switch between the locking position and the unlocking position.

[0016] In one embodiment, when the first limiting member retreats from the first limiting groove, the first limiting member is located in the moving path of the first locking member to limit the first locking member to switch from the first position to the second position; when the first limiting member is inserted into the first limiting groove, the first limiting member deviates from the moving path of the first locking member to allow the first locking member to switch from the first position to the second position.

[0017] In one embodiment, the locking and holding mechanism further includes a third reset member, which is used to provide an elastic restoring force for the first locking member to keep the first locking member in the first position.

[0018] In one embodiment, the positioning assembly further includes a first unlocking member movably disposed on the first positioning assembly. The first unlocking member is drivingly connected to the first locking member, and the first unlocking member can be operated to drive the first locking member to move from the first position to the second position.

[0019] In one embodiment, the first unlocking member is provided with a driving inclined surface; the first locking member is further provided with a driving portion, and the driving portion is adapted to abut against the driving inclined surface and slide along the driving inclined surface so that the first locking member can be switched between the first position and the second position.

[0020] In one embodiment, a second limiting mechanism is further included. The second limiting mechanism is disposed between the first positioning assembly and the second positioning assembly and is configured to selectively limit the angular range of rotation of the first positioning assembly relative to the second positioning assembly.

[0021] In one embodiment, the second limiting mechanism has a first state and a second state. When the second limiting mechanism is in the first state, it limits the first positioning assembly from rotating relative to the second positioning assembly towards the first direction. When the second limiting mechanism is in the second state, it allows the first positioning assembly to rotate relative to the second positioning assembly towards the first direction; the positioning assembly further includes an elastic member; wherein, the elastic member always makes the second limiting mechanism in the first state. When the first positioning assembly is used to connect the first vehicle body, the second limiting mechanism is in the second state by overcoming the elastic force of the elastic member through the first vehicle body; or, the elastic member always makes the second limiting mechanism in the second state. When the first positioning assembly is used to connect the second vehicle body, the second limiting mechanism is in the first state by overcoming the elastic force of the elastic member through the second vehicle body.

[0022] In one embodiment, the second limiting mechanism includes: a second limiting groove provided in one of the second positioning assembly and the first positioning assembly; and a second limiting member movably disposed in the other of the second positioning assembly and the first positioning assembly and capable of being inserted into or withdrawn from the second limiting groove; wherein, when the first positioning assembly is used to connect the second vehicle body, the second limiting member is inserted into the second limiting groove, and the first positioning assembly is restricted from rotating relative to the second positioning assembly towards the first direction.

[0023] In one embodiment, the first positioning assembly has a rotation axis, and the second limiting member is disposed offset from the rotation axis; a straight line passing through the rotation axis and perpendicular to the first direction is defined as a reference line. When the first positioning assembly faces the first direction, the second limiting member and the second limiting groove are misaligned and are respectively located on both sides of the reference line.

[0024] In one embodiment, the first positioning component is a circular structure, the rotation axis is the center of the first positioning component, the second limiting groove is a semicircular groove, the radius of the semicircular groove is the distance between the second limiting member and the center of the first positioning component, and when the first positioning component is rotated relative to the second positioning component to face away from the first direction, the second limiting member is located at the midpoint of the second limiting groove.

[0025] In one embodiment, a linkage mechanism is further included. The linkage mechanism is provided in the first positioning assembly and is used for driving connection with the second limiting member. The linkage mechanism can drive the second limiting member to withdraw from or insert into the second limiting groove.

[0026] In one embodiment, the linkage mechanism includes a linkage member, which is movably arranged in the first positioning assembly and has a third position and a fourth position. The first end of the linkage member is provided with a first oblique groove, and the second limiting member is slidably arranged in the first oblique groove at one end away from the second limiting groove; when the linkage member moves to the third position, the second limiting member is inserted into the second limiting groove; when the linkage member moves to the fourth position, the second limiting member withdraws from the second limiting groove.

[0027] In one embodiment, the linkage mechanism further includes a pressing member, which is movably disposed in the first positioning assembly and has a fifth position and a sixth position. The pressing member is provided with a second inclined groove, and the second end of the linkage member is slidably disposed in the second inclined groove. When the pressing member is in the fifth position, the linkage member is located in the third position; when the pressing member is in the sixth position, the linkage member is located in the fourth position.

[0028] In one embodiment, an extending direction of the first inclined slot is staggered with an extending direction of the second inclined slot.

[0029] In one embodiment, the linkage mechanism further includes a fourth restoring member, which abuts against the linkage member and is used to provide an elastic restoring force for the linkage member to drive the linkage member to remain in the third position.

[0030] In one embodiment, when the first positioning assembly is used to connect with the second carrier body, the pressing member is in the fifth position, and the linking member is in the third position.

[0031] In one embodiment, the positioning assembly further includes a rotational movement mechanism, and the first positioning assembly is slidingly connected to the second positioning assembly via the rotational movement mechanism, and the first positioning assembly simultaneously moves and turns relative to the sliding of the second positioning assembly.

[0032] In one embodiment, the rotational movement mechanism includes a first track, a second track, a first slider, and a second slider. The first track extends along the first direction, the second track is disposed intersecting the first track, the first slider and the second slider are spaced apart and disposed on the first positioning assembly. The first slider is configured to slide within the second track, and the second slider is configured to slide within the first track.

[0033] In one embodiment, an intersection point is formed at the intersection of the first track and the second track, and the distance between the intersection point and the end of the first track or the end of the second track is greater than or equal to the distance between the first slider and the second slider.

[0034] In one embodiment, when the first slider is located at the intersection point, the second slider is located within the first track, and the first positioning assembly faces or backs the first direction relative to the second positioning assembly; when the second slider is located at the intersection point, the first slider is located within the second track, and the first positioning assembly is disposed facing or backing a second direction relative to the second positioning assembly, and the second direction intersects the first direction.

[0035] In one embodiment, the second positioning assembly includes a second housing having a second installation cavity that communicates with the first track and the second track; the rotational movement mechanism further includes a first slider and a second slider. The first slider is located within the second installation cavity and is connected to the first slider; the second slider is located within the second installation cavity and is connected to the second slider.

[0036] In one embodiment, the positioning assembly further includes a first locking mechanism disposed between the first positioning assembly and the second positioning assembly. The first locking mechanism has a first locked state and a first unlocked state. When the first locking mechanism is in the first locked state, the first positioning assembly is restricted from rotating relative to the second positioning assembly. When the first locking mechanism is in the first unlocked state, the first positioning assembly is allowed to rotate relative to the second positioning assembly.

[0037] In one embodiment, the first locking mechanism includes: a locking component movably disposed on one of the second positioning component and the first positioning component; and a locking recess disposed on the other of the second positioning component and the first positioning component; wherein when the locking component is inserted into the locking recess, the first positioning component and the second positioning component are locked and engaged to restrict the first positioning component from rotating relative to the second positioning component; when the locking component withdraws from the locking recess, the first positioning component can rotate relative to the second positioning component.

[0038] In one embodiment, the locking component includes a first locking portion, and the first locking portion is movably disposed along the first direction on one of the second positioning component and the first positioning component; when the first positioning component rotates relative to the second positioning component to face one of the first direction and away from the first direction, the first locking portion can be locked and engaged with the locking recess.

[0039] In one embodiment, the positioning component further includes a first unlocking mechanism, and the first unlocking mechanism can be operably connected to the first locking portion and is used to drive the first locking portion to withdraw from the locking recess.

[0040] In one embodiment, the first locking portion is movably disposed on the second positioning component, the locking recess is disposed on the first positioning component, and the first unlocking mechanism includes: a first driving member pivotally connected to the second positioning component and pivotally connected to the first locking portion; a first operating member operably disposed on the second positioning component; and a first traction component respectively connected to the first operating member and the first driving member; wherein when the first operating member is operated, the first operating member drives the first driving member to pivot through the first traction component, so that the first driving member can drive the first locking portion to withdraw from the locking recess.

[0041] In one embodiment, the locking component further includes a second locking portion, and the second locking portion is movably disposed on one of the second positioning component and the first positioning component, and the second locking portion is disposed opposite to the first locking portion along the first direction; when the first positioning component rotates relative to the second positioning component to face the other of the first direction and away from the first direction, the second locking portion can be locked and engaged with the locking recess.

[0042] In one embodiment, the first positioning component further includes a second driving member and a second transmission component, and the second transmission component is configured to drive the second driving member to move, so that the second driving member drives the second locking portion to withdraw from the locking recess.

[0043] In one embodiment, the locking recess is provided on the first positioning component, the second locking portion is provided on the second positioning component, and when the second driving member is driven by the second transmission component, it can push the second locking portion out of the locking recess.

[0044] In one embodiment, the second transmission component includes: a transmission member movably disposed on the first positioning component and configured to be drivingly connected to a first transmission component provided on the first vehicle body; a third driving member pivotally connected to the first positioning component and one end of the third driving member is pivotally connected to the second driving member; and a third traction component respectively connected to the transmission member and the other end of the third driving member; when the transmission member is driven to move by the first transmission component, the transmission member drives the third driving member to pivot through the third traction component, so that the second driving member moves to be able to push the second locking portion out of the locking recess.

[0045] In one embodiment, the second positioning component includes a second housing, a convex body protrudes from the upper surface of the second housing, the convex body forms a limiting convex portion, and a groove-shaped structure is formed between the limiting convex portion and the upper surface of the second housing. The first positioning component includes a first housing. When the first positioning component faces the first direction or faces away from the first direction relative to the second positioning component, a part of the edge of the first housing is inserted into the groove-shaped structure.

[0046] In one embodiment, the second housing includes a second top cover and a second bottom cover connected to each other. The convex body protrudes from the upper surface of the second top cover, the convex body forms the limiting convex portion, and the groove-shaped structure is formed between the limiting convex portion and the upper surface of the second top cover.

[0047] In one embodiment, the second positioning component includes a frame and at least one first support mechanism. The first support mechanism includes a first support member and a second support member. The first support member is fixed to the frame, and the second support member is supported on the first support member. When the first positioning component faces the first direction or faces away from the first direction relative to the second positioning component, at least a part of the second support member is located below the first positioning component.

[0048] In one embodiment, the second support member includes two relatively arranged connecting pieces and a connecting piece connected between the two connecting pieces. The two connecting pieces are supported on the first support member, and the connecting piece is located below the limiting convex portion.

[0049] In one embodiment, the connecting piece includes a connecting body and a supporting convex part protruding from the connecting body. A clamping groove is formed between the supporting convex part and the connecting piece, and the clamping groove is located within the groove-shaped structure and is used to receive a part of the edge of the first housing.

[0050] In one embodiment, the second positioning assembly includes two of the first supporting structures oppositely arranged along the first direction. When the first positioning assembly moves toward or away from the first direction relative to the second positioning assembly, the second supporting member provides a supporting force for the first positioning assembly.

[0051] In one embodiment, the first positioning assembly further includes a second supporting mechanism. The second supporting mechanism includes a first sliding member and a second sliding member. The first positioning assembly includes a first housing, and the second positioning assembly includes a second housing. The first sliding member and the second sliding member are respectively connected to the first housing and the second housing.

[0052] In one embodiment, the second positioning assembly further includes a third supporting mechanism and a second housing. The second housing includes a second top cover and a second bottom cover connected to each other. The third supporting mechanism includes a plurality of supporting columns. Each supporting column includes a bottom column disposed on the second bottom cover and a top column disposed on the second top cover, and the bottom column is connected to the top column.

[0053] The present application further provides a positioning assembly for installing one of a first vehicle body and a second vehicle body to an automotive seat, including: a second positioning assembly detachably installed on the automotive seat; a first positioning assembly rotatably disposed on the second positioning assembly, and the first positioning assembly is used for detachably connecting to one of the first vehicle body and the second vehicle body; a first limiting mechanism disposed between the first positioning assembly and the second positioning assembly. When the first positioning assembly is connected to the first vehicle body, the first limiting mechanism selectively allows or restricts the first vehicle body to disengage from the first positioning assembly; and a second limiting mechanism disposed between the first positioning assembly and the second positioning assembly. When the first positioning assembly is connected to the second vehicle body, the second limiting mechanism is used to selectively limit the angular range of rotation of the first positioning assembly relative to the second positioning assembly.

[0054] In one embodiment, when the first positioning assembly is connected to the first vehicle body and the first positioning assembly rotates relative to the second positioning assembly to face the first direction, the first limiting mechanism is used to restrict the first vehicle body from disengaging from the first positioning assembly.

[0055] In one embodiment, the first limiting mechanism includes: a first limiting groove provided on a surface of the second positioning component facing the first positioning component; and a first limiting member movably provided on the first positioning component and capable of inserting into or retracting from the first limiting groove; wherein, when the first positioning component is used to connect the first vehicle body and rotates relative to the second positioning component to face the first direction, the first limiting member inserts into the first limiting groove to limit the first vehicle body from detaching from the first positioning component.

[0056] In one embodiment, the first positioning component includes a first connection mechanism for detachably connecting the first vehicle body and having a locked state and an unlocked state. When the first connection mechanism is in the locked state, the first vehicle body is restricted from detaching from the first connection mechanism; when the first connection mechanism is in the unlocked state, the first vehicle body is allowed to detach from the first connection mechanism; the positioning component further includes a locking and holding mechanism movably provided on the first positioning component and used to hold the first connection mechanism in the locked state; when the first limiting member retracts from the first limiting groove, the first limiting member is located on the movement path of the locking and holding mechanism to limit the movement of the locking and holding mechanism; when the first limiting member inserts into the first limiting groove, the first limiting member deviates from the movement path of the locking and holding mechanism to allow the locking and holding mechanism to move.

[0057] In one embodiment, the second limiting mechanism includes: a second limiting groove provided on one of the second positioning component and the first positioning component; and a second limiting member movably provided on the other of the second positioning component and the first positioning component and capable of inserting into or retracting from the second limiting groove; wherein, when the first positioning component is used to connect the second vehicle body, the second limiting member inserts into the second limiting groove, and the first positioning component is restricted from rotating relative to the second positioning component to face the first direction.

[0058] In one embodiment, the positioning component further includes a rotary movement mechanism, and the first positioning component is slidably connected to the second positioning component through the rotary movement mechanism, and the first positioning component performs displacement and steering simultaneously with the sliding of the first positioning component relative to the second positioning component.

[0059] In one embodiment, the rotary movement mechanism includes a first track, a second track, a first sliding member, and a second sliding member. The extending direction of the second track is arranged to intersect with the extending direction of the first track. The first sliding member and the second sliding member are spaced apart on the first positioning component. The first sliding member is used to slide in the second track, and the second sliding member is used to slide in the first track.

[0060] In one embodiment, an intersection is formed at the intersection of the first track and the second track, and the distance between the intersection and the end of the first track or the end of the second track is greater than or equal to the distance between the first slider and the second slider.

[0061] The present application further provides a vehicle, including: the positioning component as described above; and a vehicle body detachably connected to the first positioning component of the positioning component, where the vehicle body is a first vehicle body or a second vehicle body.

[0062] In one embodiment, it includes the positioning component as described above, where the first transmission component includes: a pushing member movably disposed on the first vehicle body and used to push the transmission member; and a second traction component respectively connected to the pushing member and the second operating member; when the second operating member is operated, the second operating member drives the pushing member to push the transmission member through the second traction component.

[0063] The present application further includes a positioning component, including: a first positioning component having a rotation axis, where the first positioning component is used to detachably connect to a vehicle body, and the vehicle body is a first vehicle body or a second vehicle body; a second positioning component; a rotary movement mechanism, where the rotary movement mechanism includes a track and a slider sliding in the track, and the first positioning component simultaneously performs displacement and rotation relative to the second positioning component through the rotary movement mechanism, and the rotation axis displaces along a linear trajectory perpendicular to the track as the first positioning component displaces and rotates, and the track has a first groove section and a second groove section on both sides of the intersection of the linear trajectory and the track; wherein, when the first positioning component is used to connect the first vehicle body and the slider is located in the second groove section, the first positioning component restricts the first vehicle body from detaching from the first positioning component; when the first positioning component is used to connect the second vehicle body, the slider is restricted from moving to the second groove section.

[0064] In one embodiment, the slider is disposed on the first positioning component and deviates from the rotation axis, and the track is disposed on the second positioning component.

[0065] In one embodiment, the first groove section is located in a first direction of the intersection, and the second groove section is located in a direction opposite to the first direction of the intersection. When the slider is located in the second groove section, the first positioning component faces the first direction relative to the second positioning component.

[0066] The present application also provides a positioning assembly for mounting the first vehicle body or the second vehicle body to an automobile seat, including: a third positioning assembly detachably mounted on the automobile seat; a second positioning assembly rotatably provided on the third positioning assembly; a first positioning assembly movably provided on the second positioning assembly and having an extended state and a retracted state, and the first positioning assembly is used for detachably connecting with the first vehicle body or the second vehicle body; and an extension mechanism connected between the first positioning assembly and the second positioning assembly for guiding the first positioning assembly to switch between the extended state and the retracted state.

[0067] In one embodiment, the extension mechanism includes a first main link, a second main link and a first auxiliary link. One of the first main link and the second main link is connected to the first positioning assembly, and the other is connected to the second positioning assembly. Two ends of the first auxiliary link are respectively pivotally connected to the first main link and the second main link, so that the first main link and the second main link can approach or separate from each other; when the first main link and the second main link approach each other, the first positioning assembly is in the retracted state, and when the first main link and the second main link separate from each other, the first positioning assembly is in the extended state.

[0068] In one embodiment, gears are respectively provided at one end of the first main link and one end of the second main link, and the two gears are meshed with each other. Two ends of the first auxiliary link are respectively pivotally connected to the centers of the two gears.

[0069] In one embodiment, the extension mechanism further includes a first reinforcing link and a third auxiliary link. The first reinforcing link is pivotally connected to the third auxiliary link, and one end of the first reinforcing link away from the third auxiliary link is pivotally connected to the first auxiliary link. One end of the third auxiliary link away from the first reinforcing link is pivotally connected to the first main link, so that the first main link, the first auxiliary link, the first reinforcing link and the third auxiliary link form a four-bar linkage structure, and the third auxiliary link is connected to the second positioning assembly.

[0070] In one embodiment, the extension mechanism further includes a second auxiliary link. Two ends of the second auxiliary link are respectively pivotally connected to the centers of the two gears, and the second auxiliary link and the first auxiliary link are respectively located on both sides of the gears.

[0071] In one embodiment, the stretching mechanism further includes a second reinforcing rod and a fourth auxiliary rod. The second reinforcing rod is pivotally connected to the fourth auxiliary rod, and one end of the second reinforcing rod away from the fourth auxiliary rod is connected to the second auxiliary rod. One end of the fourth auxiliary rod away from the second reinforcing rod is pivotally connected to the second main link, so that the second main link, the second auxiliary rod, the second reinforcing rod and the fourth auxiliary rod form a four-bar linkage structure, and the fourth auxiliary rod is connected to the first positioning assembly.

[0072] In one embodiment, a second locking mechanism is further included. The second locking mechanism is disposed between the first positioning assembly and the second positioning assembly. The second locking mechanism has a second locking state and a second unlocking state. When the second locking mechanism is in the second locking state, the first positioning assembly is restricted from moving relative to the second positioning assembly. When the second locking mechanism is in the second unlocking state, the first positioning assembly is allowed to move relative to the second positioning assembly.

[0073] In one embodiment, the second locking mechanism includes a second locking member pivotally connected to the first positioning assembly. The second locking member has an operating end and a locking end. The second positioning assembly is provided with a locking mating portion. The second locking member is pivotable between a locking position and an unlocking position. When the second locking member is in the locking position, the locking end can be locked with the locking mating portion. When the second locking member is in the unlocking position, the locking end can be disengaged from the locking mating portion; the operating end can be operated to pivot the second locking member from the locking position to the unlocking position. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] The drawings forming a part of this application are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an improper limitation to this application.

[0075] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0076] In addition, the drawings are not drawn to a scale of 1:1, and the relative sizes of the respective elements are only schematically drawn in the drawings and not necessarily drawn to the actual scale. In the drawings:

[0077] Figure 1Schematic diagram of the three-dimensional structure of a vehicle in an embodiment of the present application, where the first vehicle body is connected to the first positioning component, and the first positioning component faces the first direction;

[0078] Figure 2 Schematic diagram of the three-dimensional structure of a vehicle in an embodiment of the present application, where the first vehicle body is connected to the first positioning component, and the first positioning component faces the third direction;

[0079] Figure 3 Schematic diagram of the three-dimensional structure of a vehicle in an embodiment of the present application, where the first vehicle body is connected to the first positioning component, and the first positioning component faces the fourth direction;

[0080] Figure 4 Schematic diagram of the three-dimensional structure of a vehicle in an embodiment of the present application, where the second vehicle body is connected to the first positioning component, and the first positioning component faces the third direction;

[0081] Figure 5 Schematic diagram of the three-dimensional structure of a vehicle in an embodiment of the present application, where the second vehicle body is connected to the first positioning component, and the first positioning component faces the fourth direction;

[0082] Figure 6 Shows Figure 5 a three-dimensional view of the second vehicle body in

[0083] Figure 7 Schematic diagram of the three-dimensional structure of the positioning component in the first embodiment of the present application, where the first positioning component faces the first direction;

[0084] Figure 8 Schematic diagram of the three-dimensional structure of the positioning component in the first embodiment of the present application, where the first positioning component faces the second direction;

[0085] Figure 9 Schematic diagram of the three-dimensional structure of the positioning component in the first embodiment of the present application, where the first positioning component faces the fourth direction;

[0086] Figure 10 Schematic diagram of the three-dimensional structure of the positioning component in the first embodiment of the present application, where the first positioning component faces the third direction;

[0087] Figure 11 Is Figure 7 a three-dimensional structure diagram of the first positioning component in the positioning component in

[0088] Figure 12 Shows Figure 11 the U1-U1 cross-sectional view of , where the engaging hook is in the locked position;

[0089] Figure 13 Shows Figure 11Cross-sectional view of U1-U1, where the engaging hook is in the unlocking position;

[0090] Figure 14 is Figure 7 Schematic perspective structure diagram of the first positioning component in the positioning component from another perspective;

[0091] Figure 15 is Figure 14 Exploded view of the first positioning component in ;

[0092] Figure 16 is Figure 15 Enlarged view of area A in ;

[0093] Figure 17 is Figure 15 Partial structure diagram of the first positioning component in, where the first top cover is omitted;

[0094] Figure 18 is Figure 17 Enlarged view of area B in ;

[0095] Figure 19 is Figure 17 Enlarged view of area C in ;

[0096] Figure 20 is Figure 15 Partial structure diagram of the first positioning component in, where the first bottom cover is omitted;

[0097] Figure 21 is Figure 20 Enlarged view of area D in ;

[0098] Figure 22 is Figure 7 Schematic perspective structure diagram of the second positioning component in the positioning component;

[0099] Figure 23 is Figure 7 Schematic perspective structure diagram of the second positioning component in the positioning component from another perspective;

[0100] Figure 24 is Figure 7 Top view of the second positioning component in the positioning component;

[0101] Figure 25 is Figure 7 Top view of the second positioning component in the positioning component, where the second top cover is omitted;

[0102] Figure 26 is Figure 25 Enlarged view of area O in ;

[0103] Figure 27 is Figure 25 Enlarged view of area P in ;

[0104] Figure 28 Shows a bottom view of the second top cover of the second positioning component;

[0105] Figure 29 Shows Figure 1 The U2-U2 cross-sectional view of

[0106] Figure 30 Is Figure 29 The enlarged view at circle E in

[0107] Figure 31 Is Figure 29 The enlarged view at circle F in

[0108] Figure 32 Shows Figure 2 The U3-U3 cross-sectional view of

[0109] Figure 33 Is Figure 32 The enlarged view at circle G in

[0110] Figure 34 Is Figure 32 The enlarged view at circle H in

[0111] Figure 35 Shows Figure 4 The U4-U4 cross-sectional view of

[0112] Figure 36 Is Figure 35 The enlarged view at circle J in

[0113] Figure 37 Is Figure 35 The enlarged view at circle K in

[0114] Figure 38 Partial structural schematic diagram of the second positioning component shown in an embodiment of the present application;

[0115] Figure 39 Is Figure 38 The structural schematic diagram of the second support member in the second positioning component in

[0116] Figure 40 Partial structural schematic diagram of the second positioning component shown in another embodiment of the present application;

[0117] Figure 41 Is Figure 40 The structural schematic diagram from another perspective;

[0118] Figure 42 Is Figure 9 The U5-U5 cross-sectional view of

[0119] Figure 43Schematic three-dimensional structure diagram of the positioning component in the first embodiment of the present application, in which the first top cover and the second top cover are omitted;

[0120] Figure 44 is Figure 43 the enlarged view of the circled S in;

[0121] Figure 45 Schematic three-dimensional structure diagram of the positioning component in the first embodiment of the present application, in which the first top cover, the first bottom cover and the second top cover are omitted;

[0122] Figure 46 is Figure 45 the enlarged view of the circled T in;

[0123] Figure 47 is Figure 43 the structure diagram of the third traction component in, in which the third traction component is not deformed;

[0124] Figure 48 is Figure 43 the structure diagram of the third traction component in, in which the third traction component is deformed;

[0125] Figure 49 shows Figure 1 the front view of the first vehicle body in;

[0126] Figure 50 shows Figure 49 the U6-U6 cross-sectional view of, in which the pushing member is not pressed down;

[0127] Figure 51 shows Figure 49 the U6-U6 cross-sectional view of, in which the pushing member is pressed down;

[0128] Figure 52 Schematic three-dimensional structure diagram of the positioning component in the second embodiment of the present application, in which the first positioning component faces the first direction;

[0129] Figure 53 Schematic three-dimensional structure diagram of the positioning component in the second embodiment of the present application, in which the first positioning component faces the third direction;

[0130] Figure 54 Schematic three-dimensional structure diagram of the positioning component in the second embodiment of the present application, in which the first positioning component faces the second direction and the first positioning component is in the retracted state;

[0131] Figure 55 Schematic three-dimensional structure diagram of the positioning component in the second embodiment of the present application, in which the first positioning component faces the second direction and the first positioning component is in the extended state;

[0132] Figure 56 isFigure 55 Enlarged view of the middle circle L;

[0133] Figure 57 Schematic perspective view of the positioning component in the second embodiment of the present application, where the first positioning component faces the fourth direction;

[0134] Figure 58 Cross-sectional view of the positioning component in the second embodiment of the present application.

[0135] Explanation of reference numerals:

[0136] 1000, Vehicle; 100, Positioning Component; 110, First Positioning Component; 111, First Housing; 1111, First Installation Cavity; 1112, First Limiting Hole; 1113, Second Limiting Hole; 1114, Thrust Hole; 1115, First Top Cover; 1116, First Bottom Cover; 1117, Push Hole; 1118, Edge; 112, First Connection Mechanism; 1121, Clamping Hook; 11211, Clamping Portion; 11212, Accommodating Groove; 11213, Thrust Wall; 1122, Card Slot; 113, Indication Mechanism; 1131, Swing Member; 1132, Color Patch; 1133, Observation Hole; 114, Moving Limiting Seat; 1141, Activity Cavity; 1142, First Opening; 1143, Second Opening; 115, Support Plate; 116, Support Rod; 117, Second Support Mechanism; 120, Second Positioning Component; 121, Second Housing; 1211, Second Installation Cavity; 1212, Second Top Cover; 1213, Second Bottom Cover; 1214, Convex Body; 1215, Limiting Convex Portion; 1216, First Channel; 1217, Second Channel; 122, Locking and Matching Portion; 123, Support Frame; 124, Pivot Axis; 125, Seat Connection Plug; 126, Support Leg; 127, First Support Mechanism; 1271, First Support Member; 1272, Second Support Member; 12721, Connection Piece; 12721a, Connection Body; 12721b, Support Convex Portion; 12721c, Fixed Groove; 12721d, Clamping Groove; 12722, Connecting Piece; 12722a, Arch Portion; 12722b, Accommodating Groove; 12722c, Fastening Hole; 1273, Support Pad; 1274, Auxiliary Support Piece; 12741, First Auxiliary Piece; 12742, Second Auxiliary Piece; 12743, Third Auxiliary Piece; 12744, Hole Opening; 128, Frame; 1281, First Straight Rod; 1282, Second Straight Rod; 1283, Arc Rod; 129, Third Support Mechanism; 1291, First Support Column; 1291a, First Bottom Column; 1291b, First Top Column; 1292, Second Support Column; 1292a, Second Bottom Column; 1292b, Second Top Column; 130, Third Positioning Component; 140, First Limiting Mechanism; 141, First Limiting Groove; 142, First Limiting Member; 1421, Sliding Inclined Plane; 1422, Strip Hole; 143, First Reset Member; 150, Locking and Holding Mechanism; 151, First Locking Member; 1511, Locking Groove; 1512, Driving Portion; 152, Third Reset Member; 160, First Unlocking Member; 161, Driving Inclined Plane; 170, Second Limiting Mechanism; 171, Second Limiting Groove; 172, Second Limiting Member; 1721, Guide Convex; 180, Linkage Mechanism; 181, Linkage Member; 1811, First Oblique Slot; 182, Pressing Member; 1821, Second Oblique Slot; 183, Fourth Reset Member; 190, Rotary Movement Mechanism; 191, First Track; 192, Second Track; 193, Intersection Point194. First sliding member; 195. Second sliding member; 196. First slider; 197. Second slider; 1971. Groove; 198. Sliding wheel; 211. Locking assembly; 2111. First locking portion; 2112. Second locking portion; 2113. Fifth reset member; 2114. Seventh reset member; 212. Locking recess; 230. Extension mechanism; 231. First main link; 232. Second main link; 233. First auxiliary rod; 234. Gear; 235. First reinforcing rod; 236. Third auxiliary rod; 237. Second auxiliary rod; 238. Second reinforcing rod; 239. Fourth auxiliary rod; 240. Second locking mechanism; 241. Second locking member; 2411. Operating end; 2412. Locking end; 242. Button; 300. First unlocking mechanism; 310. First driving member; 320. First operating member; 330. First traction assembly; 331. First traction rope; 400. Second unlocking mechanism; 410. Second driving member; 411. Elastic arm; 420. Second operating member; 430. First transmission assembly; 431. Pushing member; 432. Second traction assembly; 4321. Second traction rope; 433. Linking block; 434. Guide wheel; 440. Second transmission assembly; 441. Transmission member; 4411. Fixed seat; 44111. First connecting portion; 4412. Movable pushing seat; 44121. Second connecting portion; 4413. Third connecting portion; 442. Third driving member; 443. Third traction assembly; 4431. Third traction rope; 44311. First rope end; 44312. Second rope end; 4432. Third traction sleeve; 44321. First sleeve end; 44322. Second sleeve end; 444. Eighth reset member; 500. First vehicle body; 520. Pushing member; 530. Sixth reset member; 600. Second vehicle body; 610. Engaging member; F1. First direction; F2. Second direction; F3. Third direction; F4. Fourth direction; F5. Fifth direction; Q1. First pivot point; Q2. Second pivot point; Q3. Third pivot point.; Detailed implementation manners

[0137] To make the above objects, features, and advantages of the present application more obvious and understandable, the following describes the detailed implementation manners of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0138] Figures 1 to 5A perspective view of a vehicle 1000 provided according to some embodiments of the present invention is schematically shown. The vehicle 1000 may include, for example, a first vehicle body 500, a second vehicle body 600, and a positioning component 100 provided according to some embodiments of the present invention. While the vehicle 1000 is being described below, the first vehicle body 500, the second vehicle body 600, and the positioning component 100 will also be described together.

[0139] See Figures 1 to 3 , in some embodiments, the first vehicle body 500 may be, for example, a child safety seat, which is mainly used for older children to ride. See Figures 4 to 6 , in some embodiments, the second vehicle body 600 may be, for example, an infant safety carrier, which is mainly used for infants and toddlers aged zero to about 15 months (within about ten kilograms) to ride. Considering the safety of traveling, when the infant safety carrier is placed on the vehicle seat, it is restricted to face the direction of the vehicle's head, that is, it is restricted to face the front along the normal driving direction of the vehicle.

[0140] Figures 7 to 10 A perspective view of the positioning component 100 in different states in the first embodiment of the present invention is schematically shown. It should be noted that when the entire vehicle 1000 is a child safety seat, the positioning component 100 can be regarded as the vehicle base. Specifically, the positioning component 100 includes a first positioning component 110 and a second positioning component 120, and the first positioning component 110 is rotatably disposed on the second positioning component 120. Among them, the second positioning component 120 is used for detachably connecting to the vehicle seat. Specifically, the second positioning component 120 is provided with a seat connection mechanism 125 (such as an ISOFIX connector) and a support leg 126. The seat connection mechanism 125 is mainly used to fix the second positioning component 120 to the vehicle seat, and the support leg 126 is used to abut against the floor inside the vehicle. The first positioning component 110 can be detachably connected to one of the first vehicle body 500 and the second vehicle body 600, that is, it is equivalent to that the first positioning component 110 can be detachably connected to the first vehicle body 500 alone (see Figures 1 to 3 ), or the first positioning component 110 can be detachably connected to the second vehicle body 600 alone (see Figure 4 and Figure 5)。Specifically, when the first vehicle body 500 is connected to the first positioning component 110, the first positioning component 110 can rotate relative to the second positioning component 120 towards the first direction F1, and when the first positioning component 110 rotates relative to the second positioning component 120 towards the first direction F1, the first vehicle body 500 is restricted from detaching from the first positioning component 110 (the specific principle can be seen below). In other words, when the first vehicle body 500 is connected to the first positioning component 110, the first positioning component 110 can rotate freely relative to the second positioning component 120, especially when it can rotate relative to the second positioning component 120 towards the first direction F1 (as Figure 1 shown), but when the first positioning component 110 rotates relative to the second positioning component 120 towards the first direction F1, the first vehicle body 500 connected to the first positioning component 110 cannot detach from the first positioning component 110. When the second vehicle body 600 is connected to the first positioning component 110, the first positioning component 110 is restricted from rotating relative to the second positioning component 120 towards the first direction F1 (the specific principle can be seen below). It should be noted that, with the normal driving of the vehicle as a reference, the first direction F1 refers to the front direction of the vehicle when the positioning component 100 is installed on the vehicle seat, that is, it is equivalent to the direction towards the vehicle head. It should be noted that in this article, the orientation of the vehicle body 600 is the same as the direction that the infant or child faces after sitting in the vehicle body 600; the orientation of the first positioning component 110 relative to the second positioning component 120 is also the same as the direction that the infant or child faces after sitting in the vehicle body 600.

[0141] See Figures 7 to 10 , in an embodiment, the first positioning component 110 includes a first housing 111 and a first connection mechanism 112. The first connection mechanism 112 is arranged in the first housing 111 and is used to detachably connect the first vehicle body 500 or the second vehicle body 600. Among them, the first connection mechanism 112 has a locking state and an unlocking state. When the first connection mechanism 112 is in the locking state, the first connection mechanism 112 is connected to the vehicle body. When the first connection mechanism 112 is in the unlocking state, the first connection mechanism 112 detaches from the vehicle body.

[0142] Specifically, engaging members 610 (see Figure 6 ) are provided at the bottoms of the first vehicle body 500 and the second vehicle body 600. The engaging members 610 can be, for example, engaging rods. Specifically, as Figures 11 to 13 shown, the first connection mechanism 112 includes an engaging hook 1121 and a card slot 1122 provided in the first housing 111. The card slot 1122 is used to accommodate the engaging member 610 of the first vehicle body 500 or the second vehicle body 600. The engaging hook 1121 is pivotally connected to the first housing 111 and has a locking position (seeFigure 12 ), and the unlocking position (see Figure 13 ). When the engaging hook 1121 is in the locking position, the engaging hook 1121 at least partially extends into the slot 1122 to engage and lock with the engaging member 610 (see Figure 36 and Figure 37 ).

[0143] In one embodiment, as shown in Figure 12 and Figure 13 , the engaging hook 1121 is provided with a receiving groove 11212 adapted to the engaging member 610. The receiving groove 11212 is U-shaped, and the receiving groove 11212 has a pushing wall 11213 adapted to be pushed by the engaging member 610 to drive the engaging hook 1121 to pivot from the unlocking position to the locking position. The first housing 111 has a first installation cavity 1111. The slot wall of the slot 1122 is provided with a through hole (not shown in the figure), and the through hole communicates the first installation cavity 1111 and the slot 1122. Specifically, as shown in Figure 17 and Figure 18 , a support frame 123 is provided in the first installation cavity 1111, and the engaging hook 1121 is pivotally connected to the support frame 123 through a pivot shaft 124. When the engaging hook 1121 is in the locking position, the engaging hook 1121 at least partially passes through the through hole and extends into the slot 1122 to engage and lock with the engaging member 610. When the engaging hook 1121 is in the unlocking position, the engaging hook 1121 retreats from the slot 1122 through the through hole.

[0144] Specifically, in this embodiment, as shown in Figure 6 and Figure 7 , two engaging members 610 are provided at the bottom of the first carrier body 500 and the second carrier body 600 along their front-back directions. The first housing 111 is formed with two rows of slots 1122, wherein each row of slots 1122 includes at least one slot 1122. Specifically, each row of slots 1122 includes two slots 1122. In other words, the first housing 111 is formed with four slots 1122, and the four slots 1122 are arranged in a rectangular pattern, and the distance between the two rows of slots 1122 arranged front and back of the first positioning component 110 is equal to the distance between the two engaging members 610 of the first carrier body 500 or the second carrier body 600. Correspondingly, four engaging hooks 1121 are pivotally connected to the first housing 111, and each slot 1122 corresponds to one engaging hook 1121.

[0145] Refer to Figures 15 to 18 , in one embodiment, the positioning component 100 further includes a locking and holding mechanism 150. The locking and holding mechanism 150 is movably arranged in the first installation cavity 1111. When the engaging hook 1121 is driven to the locking position, the locking and holding mechanism 150 is used to lock the engaging hook 1121 in the locking position.

[0146] Continue to refer to Figures 15 to 18, in one embodiment, the locking and holding mechanism 150 includes a first locking member 151. The first locking member 151 is movably disposed within the first mounting cavity 1111 and has a first position and a second position. Specifically, when the first positioning assembly 110 faces the first direction F1 or the third direction F3, the moving direction of the first locking member 151 is parallel to the first direction F1 or the third direction F3. More specifically, one of the first locking member 151 and the engaging hook 1121 is provided with a locking groove 1511 (see Figure 13 ), and the other is provided with an engaging portion 11211. In other words, when the first locking member 151 is provided with the locking groove 1511, the engaging hook 1121 is provided with the engaging portion 11211; or, when the engaging hook 1121 is provided with the locking groove 1511, the first locking member 151 is provided with the engaging portion 11211. Specifically, as shown in Figure 12 and Figure 13 , in this embodiment, the engaging hook 1121 is provided with the engaging portion 11211, and the first locking member 151 is provided with the locking recess 1511. More specifically, when the first locking member 151 is in the first position, the engaging portion 11211 engages with the locking groove 1511 to lock the engaging hook 1121 in the locked position (see Figure 12 ). When the first locking member 151 is in the second position, the engaging portion 11211 is separated from the locking groove 1511 to allow the engaging hook 1121 to switch between the locked position and the unlocked position (see Figure 13 ).

[0147] In one embodiment, as shown in Figure 15 , ​ and ​ , the locking and holding mechanism 150 further includes a third reset member 152. The third reset member 152 is configured to provide an elastic restoring force for the first locking member 151 so that the first locking member 151 remains in the first position. The third reset member 152 is, for example, a spring. In this way, when the engaging hook 1121 pivots from the unlocked position to the locked position, under the action of the third reset member 152, the first locking member 151 can be automatically switched to the first position, so that the locking groove 1511 of the first locking member 151 can engage with the engaging portion 11211 of the engaging hook 1121 to lock the engaging hook 1121 and keep the engaging hook 1121 in the locked position. In this way, the stability and reliability of mounting the first vehicle body 500 or the second vehicle body 600 to the first positioning assembly 110 are improved.

[0148] In one embodiment, the first connecting mechanism 112 further includes a second reset member (not shown in the figure). The second reset member is used to hold the engaging hook 1121 in the unlocking position. The second reset member is, for example, a torsion spring, which is sleeved on the pivot shaft 124 and abuts against the engaging hook 1121. In this way, when the first locking member 151 moves to the second position, the locking groove 1511 moves away from the engaging portion 11211, so that the engaging portion 11211 disengages from the locking groove 1511, and the engaging hook 1121 can automatically rotate around the pivot shaft 124 to be in the unlocking position, thus facilitating smooth unlocking and not easily having the problem of the engaging hook 1121 being locked.

[0149] The following will be described in conjunction with ​ , ​ , ​ , ​ and ​ to illustrate the working principle and process of the first connecting mechanism 112 in an embodiment of the present application.

[0150] When the first vehicle body 500 or the second vehicle body 600 is not installed on the first positioning assembly 110, the engaging hook 1121 is held in the unlocking position under the action of the second reset member (see ​ ), and at the same time, the engaging portion 11211 retreats from the locking groove 1511.

[0151] When it is necessary to install the first vehicle body 500 or the second vehicle body 600 on the first positioning assembly 110, that is, when it is necessary to connect the engaging member 610 with the first connecting mechanism 112, referring to ​ , ​ , ​ and ​ , the user can first place the engaging member 610 into the card slot 1122 and make the engaging member 610 abut against the pushing wall 11213 of the accommodating groove 11212. Subsequently, push down the pushing wall 11213 of the accommodating groove 11212 to drive the engaging hook 1121 to rotate around the pivot shaft 124 (switching from ​ to ​ ), for example, rotate clockwise in the viewing angle along ​ until the engaging hook 1121 extends into the card slot 1122 to block the slot opening of the card slot 1122. At the same time, after the engaging hook 1121 rotates, the engaging portion 11211 is opposite to the locking groove 1511, and the third reset member 152 drives the first locking member 151 to move to the first position, so that the locking groove 1511 is clamped outside the engaging portion 11211, and finally the engaging hook 1121 is held in the locking position to realize stable connection with the engaging member 610.

[0152] When it is necessary to separate the first vehicle body 500 or the second vehicle body 600 from the first positioning component 110, that is, when it is necessary to disengage the engaging member 610 from the first connecting mechanism 112, the user can move the first locking member 151 from the first position to the second position. During this process, the locking groove 1511 gradually moves away from the engaging portion 11211. During the movement, when the engaging portion 11211 completely retreats from the locking groove 1511, the engaging hook 1121 automatically rotates around the pivot shaft 124 under the action of the second reset member (from ​ to ​ switch), for example, rotates counterclockwise in the viewing angle of ​ to make the engaging hook 1121 retreat from the card slot 1122, so that the notch of the card slot 1122 is opened.

[0153] See ​ , in an embodiment, the positioning component 100 further includes a first unlocking member 160 movably disposed on the first positioning component 110 to facilitate the user to control the first locking member 151. The first unlocking member 160 is drivingly connected to the first locking member 151. The first unlocking member 160 can be operated to drive the first locking member 151 to move from the first position to the second position. In this way, the user can switch the first locking member 151 from the first position to the second position by controlling the first unlocking member 160.

[0154] See ​ , in an embodiment, the first unlocking member 160 is provided with a driving inclined surface 161. The first locking member 151 is further provided with a driving portion 1512, and the driving portion 1512 is adapted to be pushed by the driving inclined surface 161 and slide along the driving inclined surface 161, so that the first locking member 151 can be switched between the first position and the second position. Specifically, the first unlocking member 160 moves along the fifth direction F5 in the first housing 111, and the fifth direction F5 can be regarded as perpendicular to the bottom surface of the first housing 111.

[0155] See ​ and ​ , briefly describe the cooperation relationship between the first unlocking member 160 and the first driving member 310. Specifically, when the first locking member 151 is in the first position, the driving portion 1512 of the first locking member 151 abuts against the top end of the driving inclined surface 161 of the first unlocking member 160. As ​ and ​ show, when the first unlocking member 160 is pushed upward along the fifth direction F5, under the guiding drive of the driving inclined surface 161, the driving portion 1512 gradually moves to the bottom end of the driving inclined surface 161, and then the first locking member 151 moves to the second position, so that the engaging portion 11211 can be disengaged from the locking groove 1511.

[0156] See ​ and ​, in one embodiment, the first housing 111 has an indicating mechanism 113. The indicating mechanism 113 indicates whether the engaging hook 1121 is in the locked position or the unlocked position according to the relative position between the first locking member 151 and the first housing 111. Specifically, as ​ shown, the first housing 111 includes a first top cover 1115 and a first bottom cover 1116 that are connected up and down, and the first top cover 1115 and the first bottom cover 1116 enclose a first installation cavity 1111. The card slot 1122 is formed in the first top cover 1115. Specifically, the indicating mechanism 113 includes a swinging member 1131, a color block 1132, and an observation hole 1133. Among them, the swinging member 1131 is pivotally connected to one side of the first bottom cover 1116 facing the first installation cavity 1111 to form a third pivot point Q3, and one end of the swinging member 1131 is pivotally connected to the first locking member 151. The other end of the swinging member 1131 is provided with a color block 1132 (such as green). The first top cover 1115 is provided with an observation hole 1133. Combining the foregoing, when operating (such as pushing the first unlocking member 160 upward along the fifth direction F5), the first locking member 151 moves from the first position to the second position. At this time, the end of the swinging member 1131 away from the color block 1132 moves with the first locking member 151, so that the entire swinging member 1131 pivots, and then the end of the swinging member 1131 provided with the color block 1132 can be moved. In this way, the user can judge the position of the first locking member 151 by observing whether the color block 1132 is displayed at the observation hole 1133, and then infer the position of the engaging hook 1121. Specifically, in this embodiment, when the first locking member 151 is in the first position, the color block 1132 is opposite to the observation hole 1133, and the user can view the color block 1132 through the observation hole 1133. When the first locking member 151 is in the second position, the color block 1132 is misaligned with the observation hole 1133, and the user cannot view the color block 1132 through the observation hole 1133. Therefore, when the color block 1132 is viewed through the observation hole 1133, it indicates that the engaging hook 1121 is in the locked position; when the color block 1132 is not viewed through the observation hole 1133, it indicates that the engaging hook 1121 is in the unlocked position. Of course, in other embodiments, when the first locking member 151 is in the first position, the color block 1132 is misaligned with the observation hole 1133, and the user cannot view the color block 1132 through the observation hole 1133. When the first locking member 151 is in the second position, the color block 1132 is opposite to the observation hole 1133, and the user can view the color block 1132 through the observation hole 1133. Or, each swinging member 1131 is provided with two color blocks 1132 of different colors (such as red and green). The two color blocks 1132 of different colors respectively correspond to the first locking member 151 being in the first position and the second position. The user views the color of the color block 1132 through the observation hole 1133 to judge whether the engaging hook 1121 is in the locked position or the unlocked position.

[0157] See​ , ​ , ​ and ​ , in one embodiment, the positioning assembly 100 further includes a rotary moving mechanism 190. The first positioning assembly 110 can rotate relative to the second positioning assembly 120 through the rotary moving mechanism 190. Specifically, taking a child sitting in the first vehicle body 500 as an example for illustration. When the positioning assembly 100 is installed on the vehicle seat, the first vehicle body 500 is installed on the first positioning assembly 110, and the child is sitting in the first vehicle body 500, under the action of the rotary moving mechanism 190, the first positioning assembly 110 (which can also be the first vehicle body 500) can face the first direction F1 (see ​ ) or face away from the first direction F1 (i.e., the third direction F3) to sit (see ​ ). Of course, under the action of the rotary moving mechanism 190, the first positioning assembly 110 (which can also be the first vehicle body 500) can also face the second direction F2 (see ​ ) or the fourth direction F4 (see ​ ), in this way, it is convenient for the user to put the child into the first vehicle body 500 or take the child out of the first vehicle body 500.

[0158] It should be noted that the above-mentioned first direction F1 and the third direction F3 are parallel and opposite in direction. In this embodiment, the third direction F3 can be regarded as the direction towards the rear of the vehicle, that is, it is equivalent to the rear of the normal driving direction of the vehicle. The above-mentioned second direction F2 and the fourth direction F4 are parallel and opposite in direction, and both can be regarded as the left and right directions when the vehicle is driving normally. Among them, the second direction F2 faces the left door of the vehicle, and the fourth direction F4 faces the right door of the vehicle.

[0159] In order to further improve the convenience of the user to put in or take out and hold the child when the first vehicle body 500 faces the second direction F2 or the fourth direction F4, in one embodiment, the first positioning assembly 110 is slidably connected to the second positioning assembly 120 through the rotary moving mechanism 190, and the first positioning assembly 110 makes a displacement and a turn while sliding relative to the second positioning assembly 120. In this way, for example, when the user switches the first vehicle body 500 from facing the first direction F1 to facing the second direction F2, the first vehicle body 500 can rotate relative to the second positioning assembly 120 to change the orientation, and at the same time, it can be pulled out relative to the second positioning assembly 120 to be closer to the door, which is convenient for holding or putting in the child. Compared with the traditional rotary mechanism, this rotary moving mechanism 190 can make the first positioning assembly 110 perform a lateral movement while rotating relative to the second positioning assembly 120, without the need to first turn and then perform a lateral pulling operation as in the traditional method. In this way, the convenience of the operation is improved.

[0160] In one embodiment, as ​ and ​ shown, the rotational movement mechanism 190 includes a first track 191, a second track 192, a first slider 194, and a second slider 195. The first track 191 extends along a first direction F1, and the second track 192 is arranged to cross the first track 191. An intersection point 193 is formed at the intersection of the first track 191 and the second track 192. Specifically, the second track 192 is perpendicularly arranged to cross the first track 191, that is, it is equivalent to the second track 192 extending towards a second direction F2. More specifically, both the first track 191 and the second track 192 are divided into two slot segments by the intersection point 193. One slot segment of the first track 191 (which can be called the first slot segment) can be regarded as extending from the intersection point 193 towards the first direction F1, and the other slot segment of the first track 191 (which can be called the second slot segment) can be regarded as extending from the intersection point 193 towards a third direction F3. One slot segment of the second track 192 (which can be called the third slot segment) can be regarded as extending from the intersection point 193 towards the second direction F2, and the other slot segment of the second track 192 (which can be called the fourth slot segment) can be regarded as extending from the intersection point 193 towards a fourth direction F4. In this embodiment, the lengths of the four slot segments are equal. The first slider 194 and the second slider 195 are spaced apart and arranged on the first positioning component 110. The first slider 194 is used for sliding within the second track 192, and the second slider 195 is used for sliding within the first track 191.

[0161] See ​ and ​ , in one embodiment, the distance R1 between the intersection point 193 and the two end portions of the first track 191 is greater than or equal to the distance R3 between the first slider 194 and the second slider 195, that is, R1≥R3. The distance R2 between the intersection point 193 and the two end portions of the second track 192 is greater than or equal to the distance R3 between the first slider 194 and the second slider 195, that is, R2≥R3. Specifically, in this embodiment, R1 = R2 = R3.

[0162] Specifically, when the first slider 194 is located at the intersection point 193, the second slider 195 is within the first track 191, and the first positioning component 110 is towards or away from the first direction F1 relative to the second positioning component 120, that is, it is equivalent to the first positioning component 110 being arranged relative to the second positioning component 120 towards the first direction F1 (see ​ ), or the first positioning component 110 being arranged relative to the second positioning component 120 towards the third direction F3 (see ​)。When the second slider 195 is at the intersection point 193, the first slider 194 is within the second track 192, and the first positioning component 110 is arranged towards or away from the second direction F2 relative to the second positioning component 120, that is, it is equivalent to that the first positioning component 110 can be arranged towards the second direction F2 relative to the second positioning component 120 (see ​ ), or the first positioning component 110 can be arranged towards the fourth direction F4 relative to the second positioning component 120 (see ​ ). In some non-limiting embodiments, the second slider 195 is closer to the front of the first positioning component than the first slider 194. In some non-limiting embodiments, the first positioning component 110 is circular, and the first slider 194 is located at the center of the first positioning component 110. When the first positioning component 110 is towards the first direction F1 or the third direction F3 relative to the second positioning component 120, the intersection point 193 and the center of the first positioning component 110 overlap in a direction perpendicular to the plane where the first track 191 and the second track 192 are located.

[0163] The following will combine ​ and ​ to briefly illustrate the principle and process of the displacement and rotation of the first positioning component 110 relative to the second positioning component 120 through the sliding of the rotation movement mechanism 190.

[0164] In one embodiment, please also refer to ​ , when the first positioning component 110 is arranged towards the first direction F1 relative to the second positioning component 120, the first slider 194 is at the intersection point 193, that is, point M, and the second slider 195 is at point N on the first track 191.

[0165] When the user needs to switch the first positioning component 110 from being arranged towards the first direction F1 relative to the second positioning component 120 to being arranged towards the second direction F2 relative to the second positioning component 120, that is, it is equivalent to that the first positioning component 110 needs to be changed from being arranged towards the front relative to the second positioning component 120 to being arranged towards the left (from ​ to ​Switch). The user can pull the first positioning component 110 to the left, and while pulling, make the first positioning component 110 have a tendency to rotate counterclockwise around the first slider 194. In this way, the first slider 194 can move from point M to point M' in the second track 192. At the same time, the second slider 195 moves synchronously from point N to point N' in the first track 191. During this process, the first positioning component 110 gradually starts to rotate relative to the second positioning component 120 and can move laterally (specifically, in the left direction) relative to the second positioning component 120. When the first slider 194 moves to M', the second slider 195 is at point N', that is, at the intersection point 193. At this time, the position of the first positioning component 110 relative to the second positioning component 120 is as ​ shown. It should be noted that the process of the orientation and position of the first positioning component 110 relative to the second positioning component 120 from ​ the state to ​ the state is reversible, that is, the orientation of the first positioning component 110 relative to the second positioning component 120 can also be switched from facing the second direction F2 to facing the first direction F1.

[0166] When the user needs to switch the setting of the first positioning component 110 relative to the second positioning component 120 from facing the first direction F1 to facing the fourth direction F4, that is, equivalent to changing the setting of the first positioning component 110 relative to the second positioning component 120 from facing forward to facing the right (from ​ to ​ switch). The user can pull the first positioning component 110 to the right, and while pulling, make the first positioning component 110 have a tendency to rotate clockwise around the first slider 194. In this way, the first slider 194 can move from point M to point M" in the second track 192. At the same time, the second slider 195 moves synchronously from point N to point N' in the first track 191. During this process, the first positioning component 110 gradually starts to rotate relative to the second positioning component 120 and can move laterally (specifically, in the right direction) relative to the second positioning component 120. When the first slider 194 moves to M", the second slider 195 is at point N', that is, at the intersection point 193. At this time, the position of the first positioning component 110 relative to the second positioning component 120 is as ​ shown. It should be noted that the process of the orientation and position of the first positioning component 110 relative to the second positioning component 120 from ​ the state to ​ the state is reversible, that is, the orientation of the first positioning component 110 relative to the second positioning component 120 can also be switched from facing the fourth direction F4 to facing the first direction F1.

[0167] See ​And ​ , the user can switch the first positioning component 110 relative to the second positioning component 120 from being oriented towards the second direction F2 to being oriented towards the third direction F3; or, referring to ​ and ​ , the user can switch the first positioning component 110 relative to the second positioning component 120 from being oriented towards the fourth direction F4 to being oriented towards the third direction F3. The following will take the case where the first positioning component 110 is switched relative to the second positioning component 120 from being oriented towards the second direction F2 to being oriented towards the third direction F3 for illustration. Specifically, the user can pull the first positioning component 110, and while pulling, make the first positioning component 110 have a tendency to rotate counterclockwise around the first sliding member 194 as the center. In this way, the second sliding member 195 can move from point N' to point N" in the first track 191, and at the same time, the first sliding member 194 can move synchronously from point M' to point M in the second track 192. During this process, the first positioning component 110 gradually starts to rotate relative to the second positioning component 120, and at the same time, the rear end of the first positioning component 110 can move relative to the second positioning component 120 towards the first direction F1. When the second sliding member 195 moves to N", the first sliding member 194 is at point M, that is, at the intersection point 193. At this time, the position of the first positioning component 110 relative to the second positioning component 120 is as shown in ​ . It should be noted that the process of the orientation and position of the first positioning component 110 relative to the second positioning component 120 from the state of ​ to the state of ​ is reversible, that is, the orientation of the first positioning component 110 relative to the second positioning component 120 can also be switched from being oriented towards the third direction F3 to being oriented towards the second direction F2.

[0168] When the user needs to switch the first positioning component 110 relative to the second positioning component 120 from being oriented towards the third direction F3 to being oriented towards the fourth direction F4, that is, it is equivalent to changing the setting of the first positioning component 110 relative to the second positioning component 120 from being oriented rearward to being oriented rightward (switching from ​ to ​ ). Directly pull the first positioning component 110 and make the first positioning component 110 have a tendency to rotate counterclockwise around the first sliding member 194 as the center. In this way, the first sliding member 194 can move from point M to point M" in the second track 192, and the second sliding member 195 can move synchronously from point N" to point N' in the first track 191. Similarly, when the user needs to switch the first positioning component 110 relative to the second positioning component 120 from being oriented towards the fourth direction F4 to being oriented towards the first direction F1, that is, it is equivalent to changing the setting of the first positioning component 110 relative to the second positioning component 120 from being oriented rightward to being oriented forward (from ​ to​ Switch). Directly pull the first positioning component 110 and make the first positioning component 110 have a tendency to rotate counterclockwise around the first sliding member 194 as the center. In this way, the second sliding member 195 can be moved from point N' to point N within the first track 191, so that the first sliding member 194 synchronously moves from point M'' to point M within the second track 192.

[0169] In this embodiment, the shape of the projection of the first positioning component 110 on the second positioning component 120 is symmetric about the rotation axis of the first positioning component 110. When the first positioning component 110 rotates relative to the second positioning component 120 towards the first direction F1, the overlapping area and range between the two are the same as those when the first positioning component 110 rotates relative to the second positioning component 120 towards the third direction F3. In this embodiment, the shape of the projection of the first positioning component 110 on the second positioning component 120 is circular. In other embodiments, the shape of the projection of the first positioning component 110 on the second positioning component 120 can also be other centrosymmetric figures that are symmetric about the rotation axis of the first positioning component 110.

[0170] See ​ , in one embodiment, the second positioning component 120 includes a second housing 121. The second housing 121 has a second installation cavity 1211, and the second installation cavity 1211 communicates with the first track 191 and the second track 192. Specifically, the second housing 121 includes a second top cover 1212 and a second bottom cover 1213 that are connected to each other. The second installation cavity 1211 is formed between the second top cover 1212 and the second bottom cover 1213. In this embodiment, the second top cover 1212 and the second bottom cover 1213 are arranged up and down. Both the second top cover 1212 and the second bottom cover 1213 are in a housing structure, and the second top cover 1212 and the second bottom cover 1213 are covered up and down to form the second installation cavity 1211. Both the first track 191 and the second track 192 are formed on the second top cover 1212. Of course, in some other embodiments not shown, the second bottom cover 1213 can be in a housing structure, and an open second installation cavity 1211 is formed inside it. The second top cover 1212 is in a flat plate structure and covers the opening of the second installation cavity 1211. Among them, the second top cover 1212 can be connected to the second bottom cover 1213 through connecting pieces such as screws.

[0171] See ​ , in one embodiment, the rotary moving mechanism 190 further includes a first slider 196 and a second slider 197. The first slider 196 is located within the second installation cavity 1211 and is connected to the first sliding member 194 (visible ​ and ​) The first slider 196 is stopped by the inner wall of the second mounting cavity 1211 to limit the first sliding member 194 within the second track 192. The second slider 197 is located within the second mounting cavity 1211 and is connected to the second sliding member 195 (see [[ID=*]] ​ ) The second slider 197 is stopped by the inner wall of the second mounting cavity 1211 to limit the second sliding member 195 within the first track 191. In this way, it is possible to prevent the first positioning assembly 110 from detaching from the second positioning assembly 120 when the first positioning assembly 110 slides relative to the second positioning assembly

[0172] Specifically, the second installation cavity 1211 further has a first channel 1216 and a second channel 1217. The first channel 1216 communicates with the first track 191. The second slider 197 can slide along the first channel 1216, and the second slider 195 can slide along the first track 191. The second channel 1217 communicates with the second track 192. The first slider 196 can slide along the second channel 1217, and the first slider 194 can slide along the second track 192. The length direction of the first channel 1216 intersects with the length direction of the second channel 1217. More specifically, in this embodiment, the length direction of the first channel 1216 (which corresponds to the dimension in the first direction F1 or the third direction F3 in this embodiment) is perpendicularly crossed with the length direction of the second channel 1217 (which corresponds to the dimension in the second direction F2 or the fourth direction F4 in this embodiment). The width direction of the first channel 1216 intersects with the width direction of the second channel 1217. More specifically, in this embodiment, the width direction of the first channel 1216 (which corresponds to the dimension in the second direction F2 or the fourth direction F4 in this embodiment) is perpendicularly crossed with the width direction of the second channel 1217 (which corresponds to the dimension in the first direction F1 or the third direction F3 in this embodiment). Wherein, the dimension of the second slider 197 along the length direction of the first channel 1216 is greater than the width of the second channel 1217, and the dimension of the first slider 196 along the length direction of the second channel 1217 is greater than the width of the first channel 1216. In this way, the first slider 194 can be restricted from sliding on the second track 192 to prevent the first slider 194 from sliding along the first track 191; the second slider 195 can be restricted from sliding on the first track 191 to prevent the second slider 195 from sliding along the second track 192. The first channel 1216 and the second channel 1217 are in communication. In this embodiment, the length of the first channel 1216 is greater than the length of the first track 191, and the length of the second channel 1217 is greater than the length of the second track 192. In this embodiment, two oppositely arranged wall bodies (or called the first wall bodies) extend from the lower surface of the second top cover 1212 towards the second installation cavity 1211, and the first channel 1216 is formed between these two wall bodies. Two other oppositely arranged wall bodies (or called the second wall bodies) extend from the lower surface of the second top cover 1212 towards the second installation cavity 1211, and the second channel 1217 is formed between these two wall bodies. In some embodiments, the wall bodies forming the first channel 1216 can also extend from the second bottom cover 1213, and the wall bodies forming the second channel 1217 can also extend from the second bottom cover 1213, which is not limited herein.

[0173] Specifically, as ​ , ​ and ​As shown, on the side of the second slider 197 facing the second top cover 1212, there is a groove 1971, and a sliding wheel 198 is installed in the groove 1971. Part of the wheel surface of the sliding wheel 198 protrudes from the groove 1971 and slidably abuts against the wall surface of the second top cover 1212 provided with the first track 191. By providing the sliding wheel 198, the smoothness of the movement of the second sliding member 195 in the first track 191 can be improved. More specifically, the second slider 197 is provided with four grooves 1971, and a sliding wheel 198 is installed in each groove 1971. Of course, the number of the grooves 1971 and the sliding wheels 198 in the second track 192 is not limited to four, and can be, for example, one, two, three, five or more. More specifically, in this embodiment, the first slider 196 can be similar to the second slider 197, and is also provided with a groove 1971 and a sliding wheel 198. The specific setting positions and quantities can refer to the grooves 1971 and the sliding wheels 198 of the second slider 197 correspondingly. According to the foregoing description, the first positioning assembly 110 can rotate freely relative to the second positioning assembly 120 under the action of the rotation moving mechanism 190, that is, the first positioning assembly 110 can rotate relative to the second positioning assembly 120 to face any one of the first direction F1, the second direction F2, the third direction F3 and the fourth direction F4. Therefore, when the first vehicle body 500 (for example, a child safety seat) is connected to the first positioning assembly 110, the first vehicle body 500 can also follow the first positioning assembly 110 to face any one of the first direction F1, the second direction F2, the third direction F3 and the fourth direction F4. However, when the second vehicle body 600 (for example, an infant safety carrier) is connected to the first positioning assembly 110, considering the safety of infants and young children during riding, the second vehicle body 600 can follow the first positioning assembly 110 to face any one of the second direction F2, the third direction F3 and the fourth direction F4, but cannot rotate with the first positioning assembly 110 to face the first direction F1. However, when the first positioning assembly 110 is connected to the first vehicle body 500 and the first positioning assembly 110 faces the first direction F1, at this time, if the user directly detaches the first vehicle body 500 from the first positioning assembly 110 and connects the second vehicle body 600 to the first positioning assembly 110, it will cause the second vehicle body 600 to face the first direction F1, which poses a safety hazard. To this end, in order to prevent the user from inadvertently detaching the first vehicle body 500 set to face the first direction F1 from the first positioning assembly 110, the positioning assembly 100 in this application further includes a first limiting mechanism 140. The first limiting mechanism 140 is arranged between the first positioning assembly 110 and the second positioning assembly 120 and is used to selectively allow or limit the detachment of the first vehicle body 500 relative to the first positioning assembly 110.Specifically, when the first positioning component 110 rotates relative to the second positioning component 120 towards the first direction F1, the first limiting mechanism 140 is used to limit the first vehicle body 500 from detaching from the first positioning component 110; and when the first positioning component 110 rotates relative to the second positioning component 120 towards the second direction F2, the third direction F3 or the fourth direction F4, the first limiting mechanism 140 can allow the first vehicle body 500 to detach from the first positioning component 110. Therefore, when the user needs to remove the first vehicle body 500 from the first positioning component 110, it is necessary to first rotate the first positioning component 110 to a direction other than towards the first direction F1, that is, equivalent to towards the second direction F2, the third direction F3 or the fourth direction F4.

[0174] The working principle of the first limiting mechanism 140 will be briefly explained below with reference to the drawings.

[0175] See ​ 、 ​ and ​ In an embodiment, the first limiting mechanism 140 is disposed between the first positioning component 110 and the second positioning component 120 and is used to selectively allow or limit the first connecting mechanism 112 to switch between a locked state and an unlocked state. In this embodiment, when the first positioning component 110 is used to connect the first vehicle body 500 and faces the first direction F1, the first limiting mechanism 140 enters the moving path of the locking and holding mechanism 150 to limit the movement of the locking and holding mechanism 150, so as to limit the first connecting mechanism 112 from switching from the locked state to the unlocked state.

[0176] Specifically, the first limiting mechanism 140 includes a first limiting groove 141 and a first limiting member 142. The first limiting groove 141 is disposed on the surface of the second positioning component 120 facing the first positioning component 110. Specifically, the first limiting groove 141 is disposed on the second top cover 1212 of the second housing 121. The first limiting member 142 is movably disposed on the first positioning component 110 and can be inserted into or withdrawn from the first limiting groove 141. Specifically, as shown in ​ and ​ The first bottom cover 1116 of the first housing 111 is provided with a first limiting hole 1112, and the first limiting hole 1112 is communicated with the first installation cavity 1111. The first limiting member 142 is movably disposed in the first installation cavity 1111 and at least part of the first limiting member 142 can extend out of the first installation cavity 1111 through the first limiting hole 1112 (see ​)。Among them, when the first limiting member 142 extends out of the first installation cavity 1111 through the first limiting hole 1112 and inserts into the first limiting groove 141, the first limiting member 142 allows the first connection mechanism 112 to switch to the unlocked state, and the first vehicle body 500 is allowed to disengage from the first positioning assembly 110; when the first limiting member 142 retracts from the first limiting groove 141, the first limiting member 142 restricts the first connection mechanism 112 from switching to the unlocked state, and the first vehicle body 500 is restricted from disengaging from the first positioning assembly 110. Specifically, when the first positioning assembly 110 rotates relative to the second positioning assembly 120 towards the first direction F1, the first limiting member 142 retracts from the first limiting groove 141. In this way, the first vehicle body 500 cannot be removed from the first positioning assembly 110 when facing the first direction F1.

[0177] Specifically, the first positioning assembly 110 has a rotation axis, and the first limiting member 142 is arranged offset from the rotation axis. In this embodiment, a straight line passing through the rotation axis and perpendicular to the first direction F1 is defined as the reference line. When the first positioning assembly 110 faces the first direction F1, the first limiting member 142 and the first limiting groove 141 are misaligned and located on both sides of the reference line respectively. More specifically, in this embodiment, when the first positioning assembly 110 is generally circular in shape, the above-mentioned rotation axis can be regarded as the center of the first positioning assembly 110. Specifically, the first limiting groove 141 is a semi-circular groove (see ​ ), and the radius of the semi-circular groove is the distance between the first limiting member 142 and the center of the first positioning assembly 110. More specifically, the notch of the semi-circular groove faces the third direction F3. When the first positioning assembly 110 rotates relative to the second positioning assembly 120 away from the first direction F1 (i.e., towards the third direction F3), the first limiting member 142 is located at the midpoint of the first limiting groove 141. It should be noted that in this embodiment, the first sliding member 194 is arranged at the rotation axis of the first positioning assembly 110, and the second track 192 provides displacement sliding for the first sliding member 194. Therefore, the second track 192 in this embodiment is also the linear trajectory of the displacement of the rotation axis of the first positioning assembly 110. Of course, in other embodiments, the first positioning assembly 110 can be other symmetrical shapes (such as oval, rectangular, etc.), and the rotation axis can be the geometric center position of the first positioning assembly 110 or offset from the geometric center position; or, the first positioning assembly 110 can also be an asymmetrical shape, and the rotation axis can be set according to actual needs.

[0178] In this embodiment, the radius of the first limiting groove 141 is equal to half of the distance between the first sliding member 194 and the second sliding member 195. Or rather, the radius of the first limiting groove 141 is equal to one quarter of the first track 191 or the second track 192. The first limiting member 142 is located at the midpoint between the first sliding member 194 and the second sliding member 195. The center of the first limiting groove 141 is located at the intersection point 193 between the first track 191 and the second track 192. The first limiting groove 141 and the second track 192 have two intersection points, which are respectively located at the midpoint of the third groove section of the second track 192 and the midpoint of the fourth groove section of the second track 192. The first limiting groove 141 and the second track 192 have one intersection point, which is located at the midpoint of the first groove section of the first track 191. Of course, in other embodiments, the first limiting groove 141 can also be other shapes, such as elliptical, and the first limiting member 142 can deviate from the midpoint between the first sliding member 194 and the second sliding member 195.

[0179] As described above, the first vehicle body 500 is detachably connected to the first housing 111 through the first connecting mechanism 112. Specifically, when the first locking member 151 is in the first position, the engaging hook 1121 is in the locked position. At this time, the first vehicle body 500 cannot be removed from the first connecting mechanism 112. When the first locking member 151 is in the second position, the engaging hook 1121 is in the unlocked position. At this time, the first vehicle body 500 can be removed from the first connecting mechanism 112. It can be seen that the position of the first locking member 151 is associated with whether the first vehicle body 500 can be removed from the first positioning assembly 110. Specifically, when the first locking member 151 is in the first position, the first vehicle body 500 cannot be removed from the first positioning assembly 110; when the first locking member 151 is in the second position, the first vehicle body 500 can be removed from the first positioning assembly 110. In this embodiment, when the first limiting member 142 moves away from the first limiting groove 141, correspondingly, the first limiting member 142 is located on the moving path of the first locking member 151, which can limit the movement of the first locking member 151 from the first position to the second position, thereby restricting the switching of the engaging hook 1121 from the locked position to the unlocked position and keeping the engaging hook 1121 in the locked position. Furthermore, the notch of the card slot 1122 is blocked, and the engaging member 610 of the first vehicle body 500 cannot be taken out from the card slot 1122, that is, it is equivalent to that the first vehicle body 500 is not removed from the first positioning assembly 110. When the first limiting member 142 is inserted into the first limiting groove 141, correspondingly, the first limiting member 142 deviates from the moving path of the first locking member 151, which allows the first locking member 151 to move, so that the engaging hook 1121 switches from the locked position to the unlocked position, thereby opening the notch of the card slot 1122, and the engaging member 610 of the first vehicle body 500 can be taken out from the card slot 1122 to complete the removal of the first vehicle body 500 from the first positioning assembly 110.

[0180] Combined with ​ and ​ , in this embodiment, according to the foregoing, when the first vehicle body 500 is connected to the first positioning member 110 and the first positioning assembly 110 faces the first direction F1, the first limiting member 142 and the first limiting groove 141 are misaligned and located on both sides of the reference straight line respectively. At this time, the first limiting member 142 abuts against the second top cover 1212 of the second housing 121, and the first limiting member 142 is located on the moving path of the first locking member 151. Therefore, the movement of the first locking member 151 is blocked and remains in the first position, and finally the first vehicle body 500 cannot be removed from the first positioning assembly 110. Combined with ​ and ​, when the first vehicle body 500 is connected to the first positioning component 110, and during the process that the first positioning component 110 gradually rotates from the first direction F1 to face the second direction F2 or the fourth direction F4 relative to the second positioning component 120, the first limiting member 142 rotates with the first positioning component 110 and gradually becomes opposite to the first limiting groove 141. When the first limiting member 142 is opposite to the first limiting groove 141, the first limiting member 142 can move downward to insert into the first limiting groove 141. In this way, the moving path of the first limiting member 142 can be deviated from that of the first locking member 151, and further, the first locking member 151 can be allowed to move to the second position to realize the removal of the first vehicle body 500 from the first positioning component 110.

[0181] It should be noted that when the first positioning component 110 faces the second direction F2 or the fourth direction F4, the first limiting member 142 is opposite to the end of the first limiting groove 141 and is inserted at the end; during the process that the first positioning component 110 switches from the second direction F2 or the fourth direction F4 to the third direction F3, the first limiting member 142 will move to the midpoint of the first limiting groove 141 within the first limiting groove 141 in the shape of a semi-circular groove.

[0182] See ​ 、 ​ and ​ , in an embodiment, a sliding inclined surface 1421 is provided at one end of the first limiting member 142 facing the second positioning component 120. The sliding inclined surface 1421 can push against the groove walls at both ends of the first limiting groove 141 to move the first limiting member 142 out of the first limiting groove 141 in a direction away from the second positioning component 120, so that when the first positioning component 110 slides relative to the second positioning component 120, the first limiting member 142 can be automatically inserted into or withdrawn from the first limiting groove 141 according to the orientation of the first positioning component 110.

[0183] Continue to refer to ​ 、 ​ and ​ , in an embodiment, the first limiting mechanism 140 further includes a first reset member 143. The first reset member 143 is used to provide an elastic restoring force for the first limiting member 142 to drive the first limiting member 142 to insert into the first limiting groove 141. Specifically, as ​ and ​As shown, a support rod 116 and two support plates 115 are provided in the first installation cavity 1111, and the two support plates 115 are respectively located on opposite sides of the first limiting hole 1112. The first limiting member 142 is provided with a strip-shaped hole 1422, and the support rod 116 passes through the strip-shaped hole 1422 and is respectively connected to the two support plates 115. More specifically, a cavity is provided inside the first limiting member 142. The first reset member 143 is a spring for example, and the spring is accommodated in the cavity, and both ends of the spring are respectively abutted against the support rod 116 and the bottom wall of the cavity of the first limiting member 142 (see ​ , ​ and ​ ). When the first limiting member 142 moves away from the first limiting groove 141, the first limiting member 142 abuts against the surface of the second positioning assembly 120, so that the first reset member 143 is compressed; when the first limiting member 142 moves above the first limiting groove 141, the first reset member 143 resets to drive the first limiting member 142 to move downward and insert into the first limiting groove 141.

[0184] According to the foregoing description, the first positioning assembly 110 can rotate freely relative to the second positioning assembly 120 under the action of the rotation moving mechanism 190. Therefore, the carrier body connected to the first positioning assembly 110 can also rotate freely with the first positioning assembly 110. However, considering the safety of riding, some carrier bodies such as the second carrier body 600 (such as an infant safety carrier) cannot be arranged facing forward (i.e., equivalent to facing the first direction F1). In other words, when the first positioning assembly 110 is connected to the second carrier body 600, the first positioning assembly 110 is restricted from facing the first direction F1, which is equivalent to being restricted from facing the front of the vehicle. In this embodiment, the positioning assembly 100 further includes a second limiting mechanism 170 and a linkage mechanism 180 to achieve restricting the first positioning assembly 110 from facing the first direction F1 when the second carrier body 600 is connected to the first positioning assembly 110. Among them, the second limiting mechanism 170 is used to limit the rotation angle range of the first positioning assembly 110 relative to the second positioning assembly 120, and the linkage mechanism 180 can enable the second limiting mechanism 170 to only play a limiting role when the second carrier body 600 is connected to the first positioning assembly 110. The operating principles of the second limiting mechanism 170 and the linkage mechanism 180 are described in detail below.

[0185] The second limiting mechanism 170 has a first state and a second state. When the second limiting mechanism 170 is in the first state, it restricts the first positioning assembly 110 from rotating relative to the second positioning assembly 120 to face the first direction F1. When the second limiting mechanism 170 is in the second state, it allows the first positioning assembly 110 to rotate relative to the second positioning assembly 120 to face the first direction F1.

[0186] Specifically, the second limiting mechanism 170 is disposed between the first positioning component 110 and the second positioning component 120. The second limiting mechanism 170 is used to limit the angular range of rotation of the first positioning component 110 relative to the second positioning component 120 when the second vehicle body 600 is connected to the first positioning component 110, so as to prevent the second vehicle body 600 from rotating towards the first direction F1.

[0187] See ​ , ​ and ​ , in an embodiment, the second limiting mechanism 170 includes a second limiting groove 171 and a second limiting member 172. Among them, the second limiting groove 171 can be provided on one of the second positioning component 120 and the first positioning component 110, and the second limiting member 172 is movably provided on the other of the second positioning component 120 and the first positioning component 110, and the second limiting member 172 can be inserted into or withdrawn from the second limiting groove 171. For example, when the second limiting groove 171 is provided on the first positioning component 110, the second limiting member 172 is movably provided on the second positioning component 120. Or, in this embodiment, the second limiting groove 171 is provided on the second positioning component 120, and the first limiting member 172 is movably provided on the first positioning component 110. More specifically, in this embodiment, the second limiting groove 171 is provided on the surface of the second positioning component 120 facing the first positioning component 110. Specifically, as ​ and ​ shown, the first bottom cover 1116 of the first housing 111 is provided with a second limiting hole 1113, the second limiting hole 1113 is communicated with the first installation cavity 1111, the second limiting member 172 is movably provided in the first installation cavity 1111 and at least part of the second limiting member 172 can extend out of the first installation cavity 1111 through the second limiting hole 1113 (see ​)。Among them, when the second limiting member 172 is inserted into the second limiting groove 171, the first positioning assembly 110 is restricted from rotating relative to the second positioning assembly 120 towards the first direction F1 (i.e., it can be regarded that the second limiting mechanism 170 is in the first state). When the second limiting member 172 retreats from the second limiting groove 171, the first positioning assembly 110 is allowed to rotate relative to the second positioning assembly 120 towards the first direction F1 (i.e., it can be regarded that the second limiting mechanism 170 is in the second state). Specifically, when the first vehicle body 500 is connected to the first positioning assembly 110, the second limiting member 172 retreats from the second limiting groove 171 and remains in the retracted state. In this way, the first positioning assembly 110 can rotate towards the first direction F1. In this embodiment, the first positioning assembly 110 can rotate 360° relative to the second positioning assembly 120. When the second vehicle body 600 is connected to the first positioning assembly 110, the second limiting member 172 is inserted into the second limiting groove 171, and the length of the second limiting groove 171 limits the movement range of the second limiting member 172. In this way, the first positioning assembly 110 cannot rotate towards the first direction F1.

[0188] In one embodiment, the second limiting member 172 is arranged offset from the rotation axis of the first positioning assembly 110 in the same way as the first limiting member 142. And when the first positioning assembly 110 faces the first direction F1, the second limiting member 172 and the second limiting groove 171 are misaligned and are respectively located on both sides of the reference straight line. Specifically, as ​ , the second limiting groove 171 is a semi-circular groove (see ​ ), and the radius of the semi-circular groove is the distance between the centers of the second limiting member 172 and the first positioning assembly 110. More specifically, the notch of the semi-circular groove faces the third direction F3. When the first positioning assembly 110 rotates relative to the second positioning assembly 120 away from the first direction F1, the second limiting member 172 is located at the midpoint of the second limiting groove 171. When the first positioning assembly 110 rotates relative to the second positioning assembly 120 to the second direction F2 and the fourth direction F4 respectively, the second limiting member 172 is located at ​ the two ends of the second limiting groove 171 in

[0189] In this embodiment, the radius of the second limiting groove 171 is equal to half of the distance between the first sliding member 194 and the second sliding member 195, or rather, the radius of the second limiting groove 171 is equal to one-fourth of the first track or the second track. The second limiting member 172 is located at the midpoint between the first sliding member 194 and the second sliding member 195. The center of the second limiting groove 171 is located at the intersection point 193 between the first track and the second track. The second limiting groove 171 and the second track 192 have two intersection points, which are respectively located at the midpoint positions of the third groove section and the fourth groove section of the second track 192. The second limiting groove 171 and the second track 192 have one intersection point, which is located at the midpoint position of the first groove section of the first track 191. Of course, in other embodiments, the first limiting groove 171 may also be of other shapes, such as elliptical, and the second limiting member 172 may deviate from the midpoint position between the first sliding member 194 and the second sliding member 195.

[0190] See ​ , in one embodiment, the linkage mechanism 180 is disposed in the first installation cavity 1111 and is used for driving connection with the second limiting member 172. The linkage mechanism 180 can drive the second limiting member 172 to retract from or insert into the second limiting groove 171. In this way, the state of the second limiting member 172 can be controlled by the linkage mechanism 180.

[0191] Continue to see ​ , in one embodiment, the linkage mechanism 180 includes a linkage member 181. The linkage member 181 is movably disposed in the first installation cavity 1111 and has a third position and a fourth position. Specifically, the moving direction of the linkage member 181 is parallel to the first direction F1 or the third direction F3. Specifically, a first inclined slot 1811 (see ​ ) is formed at the first end of the linkage member 181. One end of the second limiting member 172 facing away from the second limiting groove 171 is slidably disposed in the first inclined slot 1811, and the end of the second limiting member 172 close to the second limiting groove 171 can pass through the second limiting hole 1113 and insert into the second limiting groove 171. More specifically, when the linkage member 181 moves to the third position, the second limiting member 172 inserts into the second limiting groove 171; when the linkage member 181 moves to the fourth position, the second limiting member 172 retracts from the second limiting groove 171. In other words, when the linkage member 181 switches between the third position and the fourth position, under the driving action of the first inclined slot 1811, the second limiting member 172 can be inserted into or retracted from the second limiting groove 171. In this way, whether the second limiting member 172 inserts into the second limiting groove 171 can be controlled by changing the position of the linkage member 181.

[0192] It should be noted that the second limiting member 172 can be slidably arranged in the first inclined slot 1811 through a connecting member such as a pin rod. Or, as ​ shown, a guiding protrusion 1721 is provided on the side wall of the second limiting member 172, and the guiding protrusion 1721 is inserted into the first inclined slot 1811.

[0193] Also referring to ​ , in an embodiment, the linkage mechanism 180 further includes a pressing member 182, and the pressing member 182 is movably arranged in the first installation cavity 1111 and has a fifth position and a sixth position. Specifically, a moving limiting seat 114 (see ​ and ​ ) is provided on the side of the first bottom cover 1116 facing the first installation cavity 1111. The moving limiting seat 114 has a moving cavity 1141, and a first opening 1142 is provided on the side of the moving limiting seat 114 facing the second limiting member 172. The first opening 1142 is communicated with the moving cavity 1141. The pressing member 182 is accommodated in the moving cavity 1141 and can move up and down in the moving cavity 1141 along the fifth direction F5. The pressing member 182 is provided with a second inclined slot 1821 (see ​ and ​ ). The second end of the linkage member 181 passes through the first opening 1142 and is slidably arranged in the second inclined slot 1821. The extending direction of the first inclined slot 1811 intersects with the extending direction of the second inclined slot 1821. Specifically, when the pressing member 182 is in the fifth position, the linkage member 181 is in the third position; when the pressing member 182 is in the sixth position, the linkage member 181 is in the fourth position. In this way, the position of the linkage member 181 can be changed by changing the position of the pressing member 182, and further whether the second limiting member 172 can be inserted into the second limiting groove 171 can be controlled. In this embodiment, as ​ shown, a part of the pressing member 182 has a quadrilateral hollow cylindrical structure, and the second inclined slot 1821 is provided on the side wall of the hollow cylindrical structure. The second end of the linkage member 181 enters the hollow cylindrical structure; as ​ shown, another part of the pressing member 182 is a circular convex column structure.

[0194] In this embodiment, the distance between the bottom end of the first inclined slot 1811 and the bottom end of the second inclined slot 1821 is less than the distance between the top end of the first inclined slot 1811 and the top end of the second inclined slot 1821. When the pressing member 182 is in the fifth position in the moving cavity 1141, the second end of the linkage member 181 is located at the bottom end of the second inclined slot 1821, and the guiding protrusion 1721 of the second limiting member 172 is located at the bottom end of the first inclined slot 1811; when the pressing member 182 is in the sixth position in the moving cavity 1141, the second end of the linkage member 181 is located at the top end of the second inclined slot 1821, and the guiding protrusion 1721 of the second limiting member 172 is located at the top end of the first inclined slot 1811.

[0195] Specifically, in one embodiment, as ​ shown, the linkage mechanism 180 further includes a fourth reset member 183. The fourth reset member 183 abuts against the linkage member 181 and is used to provide an elastic restoring force for the linkage member 181 to drive the linkage member 181 to stay at the third position.

[0196] Next, with reference to the drawings, a brief description will be given of the principle that when the first positioning assembly 110 is connected to the first vehicle body 500, the first positioning assembly 110 can rotate relative to the second positioning assembly 120 towards the first direction F1, and when the first positioning assembly 110 is connected to the second vehicle body 600, the first positioning assembly 110 is restricted from rotating relative to the second positioning assembly 120 towards the first direction F1. In other words, with reference to the drawings, a brief description will be given of the working principle of the second limiting mechanism 170; or, generally speaking, a simple explanation will be given of the principle that when the second limiting member 172 is inserted into the second limiting groove 171, the first positioning assembly 110 is restricted from rotating relative to the second positioning assembly 120 towards the first direction F1, and the principle that when the second limiting member 172 retreats from the second limiting groove 171, the first positioning assembly 110 is allowed to rotate relative to the second positioning assembly 120 towards the first direction F1.

[0197] Refer to ​ and ​ , in one embodiment, the first housing 111 is provided with a push hole 1114 communicating with the first installation cavity 1111. Specifically, the first top cover 1115 is provided with the push hole 1114, and the top of the moving limit seat 114 is provided with a second opening 1143 (see ​ and ​ ), and the second opening 1143 and the push hole 1114 are oppositely arranged along the fifth direction F5. One side of the first vehicle body 500 facing the first positioning assembly 110 is provided with a push member 520 (see ​ ). When the first vehicle body 500 is connected to the first connecting mechanism 112, that is, when the first vehicle body 500 is installed on the first positioning assembly 110, the push member 520 will pass through the push hole 1114 and abut against the pressing member 182, so that the pressing member 182 is in the sixth position.

[0198] According to the foregoing, when the pressing member 182 is in the sixth position, the linkage member 181 is in the fourth position, and the second limiting member 172 is lifted to retreat from the second limiting groove 171. Specifically, when the second limiting member 172 is lifted, it does not extend out of the second limiting hole 1113. When the first vehicle body 500 remains installed on the first positioning assembly 110, under the pushing action of the push member 520, the pressing member 182 can be kept in the sixth position, and further the second limiting member 172 can always be kept in the lifted state (see ​ and ​), the second limiting member 172 retracts from the second limiting groove 171. Therefore, when the first positioning assembly 110 slides relative to the second positioning assembly 120 through the rotation movement mechanism 190, the second limiting member 172 will not interfere with the second positioning assembly 120, and the first positioning assembly 110 can slide freely relative to the second positioning assembly 120. For example, the first positioning assembly 110 can face the first direction F1 (see ​ and ​ ); or the first positioning assembly 110 can face the third direction F3 (see ​ and ​ ).

[0199] However, when the first vehicle body 500 is removed from the first positioning assembly 110, the pressing member 182 no longer receives the pushing force from the pushing member 520. Under the elastic action of the fourth reset member 183, the linkage member 181 can move and stay in the third position, and under the driving action of the first inclined groove 1811 and the second inclined groove 1821, the pressing member 182 is restored to the fifth position, and the second limiting member 172 moves downward to extend out of the second limiting hole 1113 and is inserted into the second limiting groove 171.

[0200] See ​ and ​ . Since the pushing member 520 is not provided on the side of the second vehicle body 600 facing the first positioning assembly 110, when the second vehicle body 600 is installed on the first positioning assembly 110, the top of the pressing member 182 can still be kept in the fifth position without being affected by the external pushing force. At the same time, the linkage member 181 stays in the third position, and the second limiting member 172 stays outside the second limiting hole 1113 and is inserted into the second limiting groove 171. Specifically, in this embodiment, the second limiting groove 171 is a semicircular groove and is communicated with the first track 191 and the second track 192, and the notch of the semicircular groove faces the third direction F3. Therefore, the second limiting member 172 can only move within the extension range of the semicircular groove after being inserted into the second limiting groove 171. When the first positioning assembly 110 faces the third direction F3, the second limiting member 172 is located at the midpoint of the semicircular groove; when the first positioning assembly 110 faces the second direction F2 or the fourth direction F4, the second limiting member 172 is located at the end of the semicircular groove and abuts against the groove wall at the end, and the end of the second limiting groove 171 restricts the second limiting member 172 from continuing to rotate, thereby restricting the first positioning assembly 110 from rotating relative to the second positioning assembly 120 to face the first direction F1.

[0201] In one embodiment, the radius of the first limiting groove 141 and the radius of the second limiting groove 171 may be the same or different. When the radius of the first limiting groove 141 is the same as the radius of the second limiting groove 171, the first limiting groove 141 can be regarded as the second limiting groove 171. Correspondingly, the first limiting hole 1112 can be regarded as the second limiting hole 1113. More specifically, as ​ and ​ shown, the second limiting member 172 is generally a cylindrical structure with openings at both ends, and the second limiting member 172 is sleeved outside the first limiting member 142. Of course, in other embodiments, when the radius of the first limiting groove 141 is different from the radius of the second limiting groove 171, the first limiting groove 141 and the second limiting groove 171 can be regarded as concentric structures.

[0202] As introduced above, in this embodiment, by inserting the second limiting member 172 of the second limiting mechanism 170 into the second limiting groove 171, it is possible to prevent the second carrier body 600 from rotating to face the first direction F1 for use. The second limiting mechanism 170 can be called an anti-misuse structure. In this embodiment, the fourth reset member 183 is used as an elastic member, and due to the elastic force of the fourth reset member 183, the second limiting mechanism 170 can always be in the first state, that is, the linkage mechanism 180 always drives the second limiting member 172 to insert into the second limiting groove 171. By the pushing member 520 of the first carrier body 500, the elastic force of the fourth reset member 183 can be overcome to make the second limiting mechanism 170 in the second state. Therefore, when the first positioning assembly 110 is connected to the first carrier body 500 or the second carrier body 600, the user does not need to manually operate to release the restriction of the second limiting mechanism 170 on the rotation angle range of the first positioning assembly 110 or drive the second limiting mechanism 170 to restrict the rotation angle range of the first positioning assembly 110.

[0203] It should be noted that in other embodiments, the second limiting mechanism 170 can always be in the second state by means of an elastic member. When the first positioning assembly 110 is used to connect to the second vehicle body 600, the second limiting mechanism 170 is in the first state by the second vehicle body 600 overcoming the elastic force of the elastic member. In other embodiments, the linkage mechanism 180 can be omitted. For example, an elastic member is located inside the second limiting member 172 and abuts against the second limiting member 172. The elastic force of the elastic member always causes the second limiting member 172 to disengage from the second limiting groove 171. The second vehicle body 600 is provided with a pushing structure similar to the pushing member 520. When the second vehicle body 600 is connected to the first positioning assembly 110, the pushing structure overcomes the elastic force of the elastic member and pushes the second limiting member 172 to move and insert into the second limiting groove 171, thereby restricting the rotation angle range of the first positioning assembly 110. Alternatively, the positioning assembly 100 may further be provided with a misuse prevention mechanism (not shown in the figure), and the misuse prevention mechanism is provided with a misuse prevention button for manual operation by the user. The misuse prevention button can be operated to move to different positions. When the user manually operates the misuse prevention button to move to one of the positions, the second limiting member 172 can be driven to insert into the second limiting groove 171.

[0204] In order to prevent the first positioning assembly 110 from rotating relative to the second positioning assembly 120 arbitrarily, in one embodiment, the positioning assembly 100 further includes a first locking mechanism, and the first locking mechanism is disposed between the first positioning assembly 110 and the second positioning assembly 120. The first locking mechanism has a first locking state and a first unlocking state. When the first locking mechanism is in the first locking state, the first positioning assembly 110 is restricted from rotating relative to the second positioning assembly 120. When the first locking mechanism is in the first unlocking state, the first positioning assembly 110 is allowed to rotate relative to the second positioning assembly 120. In this embodiment, when the first locking mechanism is in the first locking state, the side surface of the first positioning assembly 110 is locked with the second positioning assembly 120, that is, lateral locking is achieved between the first positioning assembly 110 and the second positioning assembly 120.

[0205] See ​ , ​ and ​, in one embodiment, the first locking mechanism includes a locking component 211 and a locking recess 212. The locking component 211 is movably disposed on one of the second positioning component 120 and the first positioning component 110, and the locking recess 212 is disposed on the other of the second positioning component 120 and the first positioning component 110. For example, when the locking component 211 is movably disposed on the first positioning component 110, the locking recess 212 is disposed on the second positioning component 120. Or, when the locking component 211 is movably disposed on the second positioning component 120, the locking recess 212 is disposed on the first positioning component 110. Wherein, when the locking component 211 is inserted into the locking recess 212, the first positioning component 110 and the second positioning component 120 are locked and cooperated to limit the rotation of the first positioning component 110 relative to the second positioning component 120. When the locking component 211 retracts from the locking recess 212, the first positioning component 110 can rotate relative to the second positioning component 120.

[0206] It should be noted that, in this embodiment, when the first positioning component 110 faces the first direction F1 or the third direction F3 relative to the second positioning component 120, the locking component 211 can be locked and cooperated with the locking recess 212 to limit the rotation of the first positioning component 110 relative to the second positioning component 120. And when the first positioning component 110 faces the second direction F2 or the fourth direction F4 relative to the second positioning component 120, the locking component 211 and the locking recess 212 are not locked to each other, and the first positioning component 110 can rotate relative to the second positioning component 120. In this embodiment, the locking recess 212 is disposed on the side surface of the first positioning component 110; in other embodiments, the locking recess 212 may be disposed at the bottom of the first positioning component 110, so that the bottom of the first positioning component 110 is locked with the second positioning component 120.

[0207] In this embodiment, as ​ , ​ , ​ and ​ shown, the locking component 211 includes a first locking portion 2111. The first locking portion 2111 is movably disposed along the first direction F1 on one of the second positioning component 120 and the first positioning component 110. Specifically, in this embodiment, the first locking portion 2111 is movably disposed on the second positioning component 120. A convex body protrudes from the upper surface of the second housing. Specifically, two convex bodies 1214 are provided on the second housing at intervals along the first direction F1 or the third direction F3 (see ​ and ​), the space between the two convex bodies 1214 is used to accommodate the first positioning component 110. Optionally, along the first direction F1, the first locking portion 2111 can be movably disposed at the front end or the rear end of the second positioning component 120, that is, it is equivalent to being movably disposed in one of the two convex bodies 1214 arranged front and back. Specifically, a perforation is respectively provided on each of the two convex bodies 1214, and both perforations communicate with the second installation cavity 1211. Among them, the first locking portion 2111 corresponds to one of the perforations and is movably disposed in the second installation cavity 1211, and at least part of the first locking portion 2111 can extend out of the second installation cavity 1211 through the corresponding perforation. More specifically, as ​ and ​ shown, along the first direction F1, the first locking portion 2111 is located at the rear end of the second positioning component 120, that is, it is equivalent to the first locking portion 2111 movably passing through the perforation of the convex body 1214 located at the rear. It should be noted that the convex body 1214 protrudes upward relative to the first track 191 and the second track 192. In this embodiment, the first track 191 and the second track 192 are provided on the upper surface of the second top cover 1212, so the convex body 1214 protrudes upward relative to the upper surface of the second top cover 1212. In other embodiments, if the first track 191 and the second track 192 are not provided on the upper surface of the second top cover 1212 but sink relative to the upper surface of the second top cover 1212, at this time, the convex body 1214 may not protrude upward relative to the upper surface of the second top cover 1212. For example, the convex body 1214 may be flush with the upper surface of the second top cover 1212. In this embodiment, the convex body 1214 is provided on the second top cover 1212, and in other embodiments, the convex body 1214 may also be provided at other parts of the second housing 121. In some non-limiting embodiments, the convex body 1214 may also be only one or more than two.

[0208] Further, in this embodiment, as ​ shown, the locking assembly 211 further includes a second locking portion 2112. The second locking portion 2112 can be movably disposed along the first direction F1 in one of the second positioning component 120 and the first positioning component 110. Specifically, in this embodiment, both the second locking portion 2112 and the first locking portion 2111 are movably disposed in the second positioning component 120, and the second locking portion 2112 and the first locking portion 2111 are oppositely disposed along the first direction F1. Specifically, as ​ and ​ shown, the second locking portion 2112 is movably disposed at the front end of the second positioning component 120, that is, it is equivalent to the second locking portion 2112 movably passing through the perforation of the convex body 1214 located at the front.

[0209] Specifically, in this embodiment, as ​As shown, the locking recess 212 is provided only on one side of the first positioning component 110, and the number of the locking recesses 212 on this side is set to one. When the first positioning component 110 faces the first direction F1, the locking recess 212 faces the first direction F1, and the locking recess 212 rotates synchronously with the rotation of the first positioning component 110. Therefore, when the first positioning component 110 faces the first direction F1, the second locking portion 2112 can be inserted into the locking recess 212 to be in locking cooperation with the locking recess 212, so that the first positioning component 110 remains facing the first direction F1. When the first positioning component 110 faces the third direction F3, the locking recess 212 rotates synchronously to face the third direction F3, and the first locking portion 2111 can be inserted into the locking recess 212 to be in locking cooperation with the locking recess 212, so that the first positioning component 110 remains facing the third direction F3.

[0210] Optionally, in other embodiments, locking recesses 212 can be provided on both sides of the first positioning component 110. At this time, the locking component 211 can include the first locking portion 2111 and the second locking portion 2112, or only include the first locking portion 2111 or the second locking portion 2112. Taking the case where locking recesses 212 are provided on both sides of the first positioning component 110 and the locking component 211 only includes the first locking portion 2111 as an example, when the first positioning component 110 faces the first direction F1 or the third direction F3, one side of the locking recess 212 faces the first direction F1, and the other side of the locking recess 212 faces the third direction F3. In this way, when the first positioning component 110 rotates to the first direction F1 or the third direction F3, the first locking portion 2111 can be inserted into the corresponding locking recess 212 respectively to achieve locking cooperation, so that the first positioning component 110 can be kept in the first direction F1 or the third direction F3. In this embodiment, both the first locking portion 2111 and the second locking portion 2112 only include one tongue, and the number of the locking recesses 212 on the corresponding side of the first positioning component 110 is also correspondingly set to one; in other embodiments, the number of tongues of the first locking portion 2111 and the second locking portion 2112 can be two or more, and the number of the locking recesses 212 on the corresponding side of the first positioning component 110 is also correspondingly set to two or more.

[0211] See ​ and ​In one embodiment, the second top cover 1212 has two convex bodies 1214 spaced apart along the first direction F1 or the third direction F3, each of which is formed with a limiting protrusion 1215. Both limiting protrusions 1215 protrude toward the space where the first positioning assembly 110 is accommodated. A groove structure with an opening is formed between each limiting protrusion 1215 and the upper surface of the second shell 121 (in this embodiment, the upper surface of the second top cover 1212). In this way, when the first positioning assembly 110 is accommodated in the space between the two convex bodies 1214, a portion of the edge 1118 of the first shell 111 (see FIG. 1 ) is formed. ​ and ​ ) can be inserted into these two groove structures. Specifically, the first shell 111 is circular. When the first positioning assembly 110 is accommodated in the space between the two protrusions 1214, the circumferential edge 1118 of the first shell 111 can be inserted into the two groove structures. When the carrier body is installed on the first positioning assembly 110, the center of gravity of the carrier body is generally biased towards the rear side of the carrier body, that is, the side of the carrier body close to its backrest. Taking the first carrier body 500 as an example, ​ As shown, when the first carrier body 500 is positioned rearward, that is, when the first positioning assembly 110 is positioned toward the third direction F3, the portion of the edge 1118 of the first housing 111 facing the third direction F3 may tend to tilt upward. Inserting the portion of the edge 1118 of the first housing 111 into the two slot-shaped structures prevents the first positioning assembly 110 from detaching from the second positioning assembly 120 due to the weight of the carrier body. In some non-limiting embodiments, there may be only one slot-shaped structure or more than two slot-shaped structures.

[0212] Furthermore, a first support mechanism 127 may be provided in the second mounting cavity 1211. On the one hand, when the carrier body (such as the first carrier body 500 or the second carrier body 600) is connected to the first positioning assembly 110, and the first positioning assembly 110 is rotated relative to the second positioning assembly 120 toward the first direction F1 or the third direction F3, the first support mechanism 127 is used to auxiliary support the carrier body to improve the stability of the carrier body installed on the first positioning assembly 110. On the other hand, the first support mechanism 127 of this embodiment is at least partially located within the groove structure of the protrusion 1214. The first support mechanism 127 of this embodiment can be used to strengthen the groove wall strength of the groove structure used to engage the partial edge 1118 of the first shell 111 described above. In this embodiment, there are two first support mechanisms 127, which are respectively provided at the two protrusions 1214.

[0213] The following describes the structure of the first support mechanism 127 located at the rear end of the second positioning assembly 120 as an example. The first support mechanism 127 may include a first support member 1271 and a second support member 1272. In this embodiment,​ As shown, the second positioning component 120 further includes a skeleton 128 disposed in the second installation cavity 1211. The skeleton 128 is generally in a U-shaped structure and includes a first straight rod 1281 and a second straight rod 1282 that extend in the front-rear direction of the positioning component 100 and are spaced apart in the left-right direction, and an arc rod 1283 with two ends respectively connected to the first straight rod 1281 and the second straight rod 1282. In this embodiment, the first support member 1271 at the rear end of the second positioning component 120 is a U-shaped rod, and the two ends of the first support member 1271 are respectively fixed to the upper surfaces of the first straight rod 1281 and the second straight rod 1282. There are two second support members 1272, which are spaced apart on the upper surface of the first support member 1271. Of course, in other embodiments, the first support member 1271 may also be in other shapes such as a straight structure, and the number of the second support members 1272 may also be more than two or less than two.

[0214] Taking one of the second support members 1272 as an example, its structure will be specifically described below. Please refer to ​ and ​ , the second support member 1272 is generally in a U-shaped frame structure and includes two connecting pieces 12721 arranged oppositely, and a connecting piece 12722 connected between the two connecting pieces 12721. Each connecting piece 12721 includes a connecting body 12721a and a supporting convex portion 12721b protruding from the connecting body 12721a. The supporting convex portion 12721b is connected to the approximate middle of the connecting body 12721a. In this embodiment, the connecting pieces 12721 are all integrally formed structures. In other embodiments, the connecting pieces 12721 may also be connected by the connecting body 12721a and the supporting convex portion 12721b through welding, riveting and other methods. The lower surfaces of the connecting body 12721a and the supporting convex portion 12721b enclose a fixing groove 12721c, and at least a part of the first support member 1271 is engaged in the fixing groove 12721c, so that the second support member 1272 is supported on the first support member 1272. Further, to increase the connection stability between the first support member 1271 and the second support member 1272, the part of the connecting body 12721a below the supporting convex portion 12721b and the lower surface of the supporting convex portion 12721b are fixedly connected to the part of the first support member 1271. The upper surface of the supporting convex portion 12721b, the connecting body 12721a and the connecting piece 12722 enclose a clamping groove 12721d. Specifically, the connecting piece 12722 is generally in a square sheet structure, and the approximate middle of the connecting piece 12722 arches upward, that is, arches away from the first support member 1271 to form an arched portion 12722a. A receiving groove 12722b is formed on the surface of the arched portion 12722a facing the first support member 1271. A fastening hole 12722c communicating with the receiving groove 12722b is also provided at the approximate middle of the arched portion 12722a.

[0215] In this embodiment, please also refer to ​ and ​ , on one side of the convex body 1214 facing the space for accommodating the first positioning component 110, there is a communication hole (not shown in the drawings) communicating with the second installation cavity 1211. The communication hole is specifically located at the bottom of the groove structure. The first support member 1271 is located in the second installation cavity 1211, and the part of the second support member 1272 below the upper surface of the support convex portion 12721b is located in the second installation cavity 1211, and the part of the second support member 1272 above the upper surface of the support convex portion 12721b extends out of the second installation cavity 1211 through the communication hole and protrudes above the upper surface of the second top cover 1212. The arched portion 12722a of the connecting piece 12722 is located below the limiting convex portion 1215; more specifically, the arched portion 12722a of the connecting piece 12722 can be supported below the limiting convex portion 1215.

[0216] In this embodiment, the limiting convex portion 1215 (or the convex body 1214) is generally made of plastic material, while the second support member 1272 is made of a rigid material (such as a metal sheet), so the second support member 1272 can strengthen the structural strength of the limiting convex portion 1215 (or the convex body 1214). When the first positioning component 110 is accommodated in the space between the two convex bodies 1214, a part of the edge 1118 of the first housing 111 (see ​ and ​ ) can be inserted into these two groove structures, that is, inserted into the two engaging grooves 12721d at the front and rear ends of the second positioning component 120, which can further prevent the first positioning component 110 from randomly detaching from the second positioning component 120.

[0217] Further, please refer to ​ and ​ , a support cushion block 1273 can also be arranged in the accommodation groove 12722b of each second support member 1272. The support cushion block 1273 can be fixed to the surface of the arched portion 12722a facing the first support member 1271 through a fastener such as a screw passing through the fastening hole 12722c and the support cushion block 1273. The support cushion block 1273 can increase the contact area between the second support member 1272 and the edge 1118, thereby further improving the structural strength of the limiting convex portion 1215 and preventing the limiting convex portion 1215 from being damaged or the limit on the first positioning component 110 from failing.

[0218] Further, as shown in ​ and ​As shown, the first support mechanism 127 may further include an auxiliary support piece 1274 with a substantially C-shaped cross-section. For example, the auxiliary support piece 1274 may include a first auxiliary piece 12741, a second auxiliary piece 12742, and a third auxiliary piece 12743 that are sequentially connected and arranged at an angle. Among them, the length of the third auxiliary piece 12743 is less than that of the first auxiliary piece 12471 and the second auxiliary piece 12742, and the third auxiliary piece 12743 is connected to the middle position of the second auxiliary piece 12742. In this embodiment, the first auxiliary piece 12741 and the second auxiliary piece 12742 are perpendicular to each other, and the second auxiliary piece 12742 and the third auxiliary piece 12743 are perpendicular to each other. In other embodiments, the angle between the first auxiliary piece 12741 and the second auxiliary piece 12742 and the angle between the second auxiliary piece 12742 and the third auxiliary piece 12743 may also be greater than 90 degrees or less than 90 degrees. When the auxiliary support piece 1274 is disposed on the second support member 1272, the first auxiliary piece 12741 is disposed substantially horizontally and above the upper surface of the support protrusions 12721b of the two second support members 1272. The second auxiliary piece 12742 is disposed substantially vertically and abuts against the bottom of the engaging grooves 12721d of the two second support members 1272, that is, against the portion of the connecting body 12721a of the two second support members 1272 that is above the support protrusions 12721b. The third auxiliary piece 12743 is located between the two second support members 1272 and can abut against the two connecting pieces 12722. More specifically, in this embodiment, the support pads 1273 disposed in the receiving grooves 12722b of each of the foregoing second support members 1272 can be regarded as a part of the auxiliary support piece 1274, and the two support pads 1273 are disposed on the second auxiliary piece 12742 and at both ends of the third auxiliary piece 12743. In this embodiment, the auxiliary support piece 1274 is an integrally formed mechanism, that is, it is equivalent to the first auxiliary piece 12741, the second auxiliary piece 12742, the third auxiliary piece 12743, and the support pads 1273 being integrally formed. Of course, in other embodiments, the first auxiliary piece 12741, the second auxiliary piece 12742, the third auxiliary piece 12743, and the support pads 1273, etc. can also be connected by welding, riveting, etc. to form the auxiliary support piece 1274. More specifically, the second auxiliary piece 12742 is provided with an orifice 12744 that communicates with the second installation cavity 1211 and the communication hole of the convex body 1214 for the first locking portion 2111 or the second locking portion 2112 to pass through. When the first positioning assembly 110 is accommodated in the space between the two convex bodies 1214, a partial edge 1118 of the first housing 111 (see ​ and ​)It can be supported by the first auxiliary piece 12741 of the auxiliary support piece 1274. Compared with being directly supported by the upper surfaces of the support protrusions 12721b of the two second support members 1272, its support area is greatly increased, playing a certain role in relieving force, reducing the pressure borne by the unit support area, and thus can further assist in supporting the first positioning component 110, that is, assisting in supporting the carrier body, so as to improve the stability of the carrier body installed on the first positioning component 110.

[0219] It should be noted that the structure of the first support mechanism 127 at the front end of the second positioning component 120 is roughly similar to the structure of the first support mechanism 127 at the rear end of the second positioning component 120. The only difference is that since the second positioning component 120 as a whole presents a structure with a lower front and a higher rear, the first support member 1271 of the first support mechanism 127 at the front end of the second positioning component 120 is a straight rod rather than a U-shaped rod.

[0220] Furthermore, as ​ shown, the first positioning component 110 further includes a second support mechanism 117. Specifically, the second support mechanism 117 includes the aforementioned first sliding member 194 and second sliding member 195. The two ends of the first sliding member 194 are respectively connected to the first positioning component 110 and the first slider 196 provided on the second positioning component 120, and the two ends of the second sliding member 195 are respectively connected to the first positioning component 110 and the second slider 197 provided on the second positioning component 120. Please refer to ​ and ​ together. When the first positioning component 110 rotates relative to the second positioning component 120 towards the second direction F2 or the fourth direction F4, at least a part of the first positioning component 110 will project beyond the projection of the second positioning component 120 in the fifth direction F5 in the fifth direction F5, that is, this part of the first positioning component 110 will be suspended. And the first sliding member 194 and the second sliding member 195 are always within the projection range of the second positioning component 120 in the fifth direction F5. Therefore, the first sliding member 194 and the second sliding member 195 can support the first positioning component 110 and the carrier body installed above the first positioning component 110, and can also generate a certain pulling force on the non-suspended part of the first positioning component 110 to prevent it from tilting upwards due to the gravity of the suspended part of the first positioning component 110.

[0221] Furthermore, please refer to ​ 、 ​ and ​, the second positioning component 120 may further include a third support mechanism 129. The third support mechanism 129 includes a plurality of groups of support column assemblies disposed in the second installation cavity 1121. In this embodiment, the third support mechanism 129 includes six groups of support column assemblies, and the six groups of support column assemblies are spaced apart along the extension direction of the second track 192. Specifically, each group of support column assemblies includes a first support column 1291 and a second support column 1292 respectively located on both sides of the second track 192. The first support column 1291 includes a first bottom column 1291a fixed to the second bottom cover 1213 and a first top column 1291b fixed to the second top cover 1212, and the first bottom column 1291a and the first top column 1291b are in contact with each other to form a support structure. The second support column 1292 includes a second bottom column 1292a fixed to the second bottom cover 1213 and a second top column 1292b fixed to the second top cover 1212, and the second bottom column 1292a and the second top column 1292b are in contact with each other to form a support structure. In this way, the six groups of support column assemblies can further enhance the structural strength of the second positioning component 120 and play an auxiliary supporting role for the first positioning component 110. In this embodiment, as ​ and ​ shown, two of the groups of support column assemblies (hereinafter referred to as the first support column assemblies) are respectively close to the two ends of the first track 192; another two groups of support column assemblies (hereinafter referred to as the second support column assemblies) are close to the position of the intersection point 193; and another two groups of support column assemblies (hereinafter referred to as the third support column assemblies) are away from the second track 192 along the first direction F1 with respect to the second support column assemblies, and are away from the first track 191 along the second direction F2 with respect to the second support column assemblies. When the first positioning component 110 rotates relative to the second positioning component 120 to the second direction or the fourth direction, the first sliding member 194 and the second sliding member 195 will assist in bearing the force. The first support column assemblies and the second support column assemblies can provide a supporting force for the first positioning component 110 at positions adjacent to the first sliding member 194 and the second sliding member 195. In addition, the third support column assemblies can further expand the supporting range, thereby providing a supporting force for the vehicle body connected to the first positioning component 110, and increasing the structural strength of the second positioning component 120 to prevent the second positioning component 120 from being damaged by crimping. Of course, in other embodiments, the number and installation positions of the support column assemblies can also be adjusted as needed.

[0222] See ​ , in one embodiment, the vehicle 1000 further includes a first unlocking mechanism 300. The first unlocking mechanism 300 can be operably connected to the first locking portion 2111 or the second locking portion 2112 and can be used to drive the first locking portion 2111 or the second locking portion 2112 to withdraw from the locking recess 212.

[0223] Specifically, in this embodiment, as ​As shown, the first unlocking mechanism 300 is operably connected to the first locking portion 2111. Therefore, the unlocking principle and process of the first unlocking mechanism 300 will be described below in terms of the interlocking cooperation between the first unlocking mechanism 300 and the first locking portion 2111. Specifically, the first unlocking mechanism 300 includes a first driving member 310, a first operating member 320, and a first traction assembly 330. Among them, the first driving member 310 is pivotally connected to the second positioning assembly 120 and pivotally connected to the first locking portion 2111. The first operating member 320 is operably disposed on the second positioning assembly 120 and exposed from the second positioning assembly 120. In this way, it is convenient for the user to operate the first operating member 320. The first traction assembly 330 is respectively connected to the first operating member 320 and the first driving member 310. When the first operating member 320 is operated (such as pressed or pushed), the first operating member 320 drives the first driving member 310 to pivot through the first traction assembly 330, so that the first driving member 310 can drive the first locking portion 2111 to withdraw from the locking recess 212. In some non-limiting embodiments, since the first locking portion 2111 is located at the rear end of the second positioning assembly 120 and the locking recess 212 is located at the front end of the first positioning assembly 110, only when the first positioning assembly 110 rotates relative to the second positioning assembly 120 to a state facing the third direction F3 (i.e., away from the first direction F1), the first locking portion 2111 can be locked and engaged with the locking recess 212, and then the first locking portion 2111 can be controlled to withdraw from the locking recess 212 through the first unlocking mechanism 300.

[0224] In one embodiment, as ​ shown, there are two first unlocking mechanisms 300. The two first unlocking mechanisms 300 are respectively located on the left and right sides of the second positioning assembly 120 in the left-right direction. Both of the two first unlocking mechanisms 300 are operably connected to the first locking portion 2111. In this way, the user can operate any one of the first operating members 320 to make the first locking portion 2111 withdraw from the locking recess 212.

[0225] See ​, in one embodiment, the first traction assembly 330 includes a first traction rope 331. One end of the first traction rope 331 is connected to the first driving member 310, and the other end of the first traction rope 331 is connected to the first operating member 320. Specifically, the positioning assembly 100 is installed on the vehicle seat. Taking the first unlocking mechanism 300 near the right door as an example to illustrate its working principle. The first driving member 310 in the first unlocking mechanism 300 is pivotally connected to the second bottom cover 1213 at a first pivot point Q1. The pivot point of the first driving member 310 with the first locking portion 2111 and the connection point of the first driving member 310 with the first traction rope 331 are respectively located on both sides of the first pivot point Q1. More specifically, the first operating member 320 is movably arranged in the second housing 121. Therefore, when it is necessary to unlock the first locking portion 2111, the first operating member 320 near the right door can be moved to drive the first traction rope 331 to pull the first driving member 310 to rotate counterclockwise around the first pivot point Q1. Furthermore, the first driving member 310 can drive the first locking portion 2111 to move toward the third direction F3, so that the first locking portion 2111 can withdraw from the locking recess 212. It should be noted that when the first driving member 310 near the right door rotates counterclockwise around the first pivot point Q1, since the first driving member 310 near the left door is also connected to the first locking portion 2111, the first locking portion 2111 will drive the first driving member 310 near the left door to rotate clockwise around its first pivot point Q1, that is, the two first driving members 310 on the left and right in this embodiment are interlocked, and operating one of the first operating members 320 can unlock the first locking portion 2111 and drive the two first driving members 310 to pivot.

[0226] Continue to refer to ​ , in one embodiment, the locking assembly 211 further includes a fifth reset member 2113. The fifth reset member 2113 abuts between the second bottom cover 1213 and the first locking portion 2111, and is used to drive the first locking portion 2111 to reset, so as to always make the first locking portion 2111 have a tendency to insert into the locking recess 212. The fifth reset member 2113 is, for example, a spring. In this way, when the locking recess 212 rotates with the first positioning assembly 110 to be opposite to the first locking portion 2111, it is equivalent to the shell wall of the first housing 111 releasing the abutment against the first locking portion 2111. Under the elastic action of the fifth reset member 2113, the first locking portion 2111 can be automatically inserted into the locking recess 212.

[0227] As described above, since the first positioning component 110 is restricted from facing the first direction F1 when it is connected to the second vehicle body 600, in this embodiment, when the first positioning component 110 is connected to the second vehicle body 600, only the first locking portion 2111 can play a locking role, and the second locking portion 2112 is not in locking cooperation with the locking recess 212. Specifically, when the first positioning component 110 faces the third direction F3, under the action of the fifth restoring member 2113, the first locking portion 2111 can automatically insert into the locking recess 212 to be in locking cooperation with the locking recess 212. At the same time, the second locking portion 2112 is abutted by the wall of the first housing 111 and is received in the second installation cavity 1211. When the user needs to switch the first positioning component 110 from facing the third direction F3 to the second direction F2 or the fourth direction F4, the user can operate the aforementioned first unlocking mechanism 300 to retract the first locking portion 2111 from the locking recess 212. Therefore, when the first positioning component 110 is connected to the second vehicle body 600, the first locking portion 2111 can be controlled only by the first unlocking mechanism 300.

[0228] As described above, when the first positioning component 110 is connected to the first vehicle body 500, the first positioning component 110 can rotate freely relative to the second positioning component 120, that is, the first positioning component 110 can face any one of the first direction F1, the second direction F2, the third direction F3, and the fourth direction F4. In one embodiment, as ​ shown, the locking assembly 211 further includes a seventh restoring member 2114. The seventh restoring member 2114 abuts between the second bottom cover 1213 and the second locking portion 2112 and is used to make the second locking portion 2112 have a tendency to insert into the locking recess 212. Therefore, when the first positioning component 110 faces the first direction F1, the locking recess 212 is opposite to the second locking portion 2112. Under the elastic action of the seventh restoring member 2114, the second locking portion 2112 can be inserted into the locking recess 212 to be in locking cooperation with the locking recess 212. At this time, the first locking portion 2111 is abutted by the wall of the first housing 111 and is received in the second installation cavity 1211. When it is necessary to switch the first positioning component 110 from facing the first direction F1 to other directions (for example, the second direction F2, the fourth direction F4, etc.), the user can first retract the second locking portion 2112 from the locking recess 212, and then change the orientation of the first positioning component 110 through the rotation moving mechanism 190.

[0229] See ​ and ​ , in one embodiment, the vehicle 1000 further includes a second unlocking mechanism 400. The second unlocking mechanism 400 is mainly used to be operably connected to the second locking portion 2112 and can be used to drive the second locking portion 2112 to withdraw from the locking recess 212.

[0230] See ​ , in one embodiment, the locking recess 212 is a locking hole that can communicate with the first mounting cavity 1111. Specifically, as shown in ​ and ​ , the second unlocking mechanism 400 includes a second driving member 410, a second operating member 420, and a transmission unit. Among them, the second driving member 410 is movably disposed in the first mounting cavity 1111, and the second driving member 410 can drive the second locking portion 2112 to withdraw from the locking recess 212. Specifically, when the first positioning assembly 110 faces or backs the first direction F1, the moving direction of the second driving member 410 is parallel to the first direction F1 or the third direction F3. In this way, when the second driving member 410 moves, it can contact and abut against the second locking portion 2112, and then can push the second locking portion 2112 out of the locking recess 212. Specifically, the second driving member 410 is provided with an elastic arm 411, and the elastic arm 411 is used to abut against the side wall of the first bottom cover 1116 or the first top cover 1115 to assist in driving the second driving member 410 to reset. The second operating member 420 is operably disposed on the first carrier body 500 (see ​ and ​ ). The transmission unit is respectively drivingly connected to the second operating member 420 and the second driving member 410. Among them, when the second operating member 420 is operated, the second operating member 420 drives the second driving member 410 to move through the transmission unit, so that the second driving member 410 drives the first locking portion 2111 to withdraw from the locking recess 212.

[0231] Combined with ​ and ​ , in one embodiment, the transmission unit includes a first transmission assembly 430 and a second transmission assembly 440. Among them, the first transmission assembly 430 is disposed on the first carrier body 500, and the second transmission assembly 440 is disposed in the first mounting cavity 1111. The first transmission assembly 430 is drivingly connected to the second transmission assembly 440.

[0232] Combined with ​ , ​ , ​ , in one embodiment, the second transmission assembly 440 includes a transmission member 441, a third driving member 442, and a third traction assembly 443. Among them, the transmission member 441 is movably disposed in the first mounting cavity 1111 and is drivingly connected to the first transmission assembly 430 (see ​ and ​ ). The third driving member 442 is pivotally connected to the bottom wall of the first mounting cavity 1111 and is pivotally connected to the second driving member 410. Specifically, the third driving member 442 is pivotally connected to the first bottom cover 1116 at the second pivot point Q2 (see ​ and ​)。The third traction assembly 443 is respectively connected to the transmission member 441 and the third driving member 442 (see ​ and ​ ). When the first transmission assembly 430 drives the transmission member 441 to move, the transmission member 441 drives the third driving member 442 to pivot through the third traction assembly 443, so that the second driving member 410 moves to be able to push the second locking portion 2112 out of the locking recess 212.

[0233] Specifically, as ​ and Figure 48 shown, the third traction assembly 443 is a flexible element, which includes a third traction rope 4431 and a third traction sleeve 4432 sleeved outside the third traction rope 4431. When the transmission member 441 moves, the third traction sleeve 4432 deforms to enable the third traction rope 4431 to drive the third driving member 442 to pivot, and further drive the second driving member 410 to move to push against the second locking portion 2112. Specifically, the third traction sleeve 4432 has a first sleeve end 44321 and a second sleeve end 44322, and the third traction rope 4431 has a first rope end 44311 adjacent to the first sleeve end 44321 and a second rope end 44312 adjacent to the second sleeve end 44322. More specifically, as Figure 30 shown, the transmission member 441 includes a fixed seat 4411 and a movable pushing seat 4412. The fixed seat 4411 is fixedly arranged in the first installation cavity 1111, and the movable pushing seat 4412 is movably arranged along the fifth direction F5 on the fixed seat 4411, that is, the movable pushing seat 4412 can move relative to the fixed seat 4411 along the fifth direction F5. Among them, the first rope end 44311 of the third traction rope 4431 is connected to the first connection portion 44111 of the fixed seat 4411 (see Figure 30 ), the second rope end 44312 of the third traction rope 4431 is connected to the third driving member 442 (see Figure 43 and Figure 44 ), and the connection point of the second rope end 44312 of the third traction rope 4431 and the third driving member 442 and the pivot connection point of the third driving member 442 and the second driving member 410 are respectively located on both sides of the second pivot connection point Q2. The first sleeve end 44321 of the third traction sleeve 4432 is connected to the second connection portion 44121 of the movable pushing seat 4412 (see Figure 30 ), along the fifth direction F5, the second connection portion 44121 is located below the first connection portion 44111, and the second sleeve end 44322 of the third traction sleeve 4432 is connected to the first top cover 1115 or the first bottom cover 1116 (see Figure 43 and Figure 44 ). Specifically, a third connection portion 4413 is provided on one side of the first bottom cover 1116 or the second top cover 1212 facing the first installation cavity 1111 (see Figure 21), the second sleeve end 44322 of the third traction sleeve 4432 is connected to the third connecting portion 4413. Specifically, the third traction sleeve 4432 is a bendable wire sleeve. It should be noted that the third traction sleeve 4432 should be made of a hard but bendable material, for example, a bendable tubular structure made of a metal material (such as steel) or plastic (such as PVC). Similarly, the third traction rope 4431 can also be made of a hard but bendable material. The working principle and process of the second transmission assembly 440 will be described below in conjunction with Figure 29 and Figure 30 .

[0234] When it is necessary to retract the second locking portion 2112 from the locking recess 212 so that the first positioning assembly 110 can slide relative to the second positioning assembly 120, the user can move the movable pushing seat 4412 downward along the fifth direction F5. In this way, the second connecting portion 44121 will drive the first sleeve end 44321 to move, and at the same time, the third traction sleeve 4432 will be squeezed and bent, so that the third traction rope 4431 will bend along with the third traction sleeve 4432. Since the first rope end 44311 of the third traction rope 4431 is fixed to the first connecting portion 44111, when the movable pushing seat 4412 moves downward along the fifth direction F5, the first sleeve end 44321 moves downward along the fifth direction F5 with the second connecting portion 44121, and the length of the section L1 of the third traction rope 4431 between the first sleeve end 44321 and the first rope end 44311 will increase (from Figure 47 to Figure 48 ). Since the total length of the third traction rope 4431 remains unchanged, under the transmission action of the third traction sleeve 4432, the length of the section L2 of the third traction rope 4431 between the second rope end 44312 and the second sleeve end 44322 decreases (from Figure 47 to Figure 48 ), so that it can be regarded that the second rope end 44312 will pull the third driving member 442 to pivot clockwise around the second pivot point Q2, and then the third driving member 442 can push the second driving member 410 to move to push the second locking portion 2112 out of the locking hole (from Figure 43 to Figure 45 switch).

[0235] See Figure 30, in one embodiment, the second transmission assembly 440 further includes an eighth reset member 444. The eighth reset member 444 can be an elastic member such as a spring, which abuts between the fixed seat 4411 (or the surface of the first bottom cover 1116 facing away from the second positioning assembly 120) and the movable pushing seat 4412, and is used to drive the movable pushing seat 4412 to move upward along the fifth direction F5. When the movable pushing seat 4412 is not pushed, the eighth reset member 444 can reset the movable pushing seat 4412, and further reset the third traction sleeve 4432 and the third traction rope 4431. Driven by the third traction rope 4431, the third driving member 442 can pivot counterclockwise around the second pivot point Q2 to assist in driving the second driving member 410 to reset.

[0236] See Figure 29 and Figure 30 , in one embodiment, the first transmission assembly 430 includes a pushing member 431 and a second traction assembly 432. Among them, the pushing member 431 is movably arranged on the first vehicle body 500 and is used to push the transmission member 441. Specifically, the pushing member 431 can move along the fifth direction F5, and the first top cover 1115 is provided with a pushing hole 1117. In this way, when the first vehicle body 500 is installed on the first housing 111, the pushing member 431 can pass through the pushing hole 1117 and abut against the movable pushing seat 4412. More specifically, the second traction assembly 432 is respectively connected to the pushing member 431 and the second operating member 420. In this way, when the second operating member 420 is operated, the second operating member 420 can drive the pushing member 431 to push the movable pushing seat 4412 of the transmission member 441 through the second traction assembly 432.

[0237] See Figure 29 , in one embodiment, the second traction assembly 432 includes a second traction rope 4321. One end of the second traction rope 4321 is connected to the second operating member 420, and the other end of the second traction rope 4321 is connected to the pushing member 431. Specifically, the second operating member 420 is movably arranged on the first vehicle body 500, and a linkage block 433 is provided at the top of the pushing member 431 (see Figure 30 , Figure 50 and Figure 51 ). The linkage block 433 and the first operating member 320 are arranged at intervals along the front-back direction of the first vehicle body 500. More specifically, a guide wheel 434 is provided inside the first vehicle body 500 (see Figure 30 , Figure 50 and Figure 51) The two ends of the second traction rope 4321 respectively bypass the guide pulley 434 and are connected to the linkage block 433 and the first operating member 320. In this way, when the second operating member 420 is operated (such as rotated, pressed or moved), under the guiding action of the guide pulley 434, the second traction rope 4321 will pull the linkage block 433 to push the pushing member 431 to move downward along the fifth direction F5, and then the pushing member 431 passes through the pushing hole 1117 and extends into the first installation cavity 1111 to push the movable pushing seat 4412 to move downward along the fifth direction F5. Specifically, a sixth reset member 530 (see Figure 50 and Figure 51 ) is provided inside the first vehicle body 500. The sixth reset member 530 abuts between the first vehicle body 500 and the linkage block 433. When the user releases the second operating member 420, the sixth reset member 530 is used to drive the pushing member 431 to reset, that is, to drive the pushing member 431 to retreat from the first installation cavity 1111.

[0238] In this embodiment, the linkage block 433 and the pushing member 431 are connected by fasteners such as screws or rivets, so that when the second traction rope 4321 pulls the linkage block 433, the pushing member 431 can be driven to move. In other embodiments, the linkage block 433 can be omitted, and the second traction rope 4321 can be directly connected to the pushing member 431 to directly pull the pushing member 431 to move.

[0239] The working principle and process of the second unlocking mechanism 400 will be briefly described below in conjunction with the relevant drawings.

[0240] See Figures 29 to 31 . When the first vehicle body 500 is connected to the first positioning assembly 110, the pushing member 431 and the transmission member 441 are arranged opposite to each other. When the first positioning assembly 110 faces the first direction F1 relative to the second positioning assembly 120, the locking recess 212 (locking hole) faces the first direction F1 and is opposite to the second locking portion 2112. At this time, the second locking portion 2112 is automatically inserted into the locking hole of the first positioning assembly 110 under the action of the seventh reset member 2114 to lock the first positioning assembly 110 in the first direction F1.

[0241] Combined with Figures 29 to 31 and Figures 43 to 48When it is necessary to change the orientation of the first vehicle body 500, the user can operate the second operating member 420, so that the second operating member 420 pulls the pushing member 431 downward along the fifth direction F5 through the second towing rope 4321. During the downward movement of the pushing member 431, it gradually passes through the pushing hole 1114 and extends into the first installation cavity 1111 to abut against the movable pushing seat 4412. When the top of the movable pushing seat 4412 receives a downward pushing force along the fifth direction F5, the movable pushing seat 4412 moves downward to drive the first sleeve end 44321 to move by the second connecting portion 44121, thereby further bending and deforming the third towing sleeve 4432. During the further bending and deforming process of the third towing sleeve 4432, the length of the section L1 of the third towing rope 4431 between the first rope end 44311 and the first sleeve end 44321 increases, and the length of the section L2 of the third towing rope 4431 between the second rope end 44312 and the second sleeve end 44322 decreases. In this way, it can be regarded that the second rope end 44312 moves towards the direction close to the second sleeve end 44322, thereby pulling the third driving member 442 to pivot clockwise around the second pivot point Q2, so that the third driving member 442 pushes the second driving member 410 to move towards the direction close to the locking hole to push the second locking portion 2112 out of the locking hole.

[0242] In this embodiment, the second unlocking mechanism 400 can also be used to unlock the first locking portion 2111. Specifically, when the first vehicle body 500 is installed on the first positioning assembly 110 and the first positioning assembly 110 faces the third direction F3 relative to the second positioning assembly 120, the first locking portion 2111 is opposite to the locking hole, and the first locking portion 2111 can automatically insert into the locking hole under the action of the fifth reset member 2113. At this time, the user can selectively unlock the first locking portion 2111 through the second unlocking mechanism 400 or the first unlocking mechanism 300.

[0243] First, take the detachable connection between the first vehicle body 500 and the first positioning component 110 as an example to illustrate the operation mode of the positioning component 100 in the first embodiment. The positioning component 100 is connected to the vehicle seat, and the first vehicle body 500 is connected to the first positioning component 110. When the first vehicle body 500 faces the first direction F1 (i.e., equivalent to the front of the vehicle's travel) along with the first positioning component 110, at this time, the first limiting mechanism 140 can limit the detachment of the first vehicle body 500 from the first positioning component 110 (the specific principle can be referred to the foregoing). In other words, when the first vehicle body 500 is connected to the first positioning component 110 and faces the first direction F1, it is impossible to detach the first vehicle body 500 to replace and install the second vehicle body 600. When the first vehicle body 500 faces the first direction F1 along with the first positioning component 110, the second locking portion 2112 will insert into the locking recess 212 of the first positioning component 110 to limit the rotation of the first positioning component 110 relative to the second positioning component 120, so that the first vehicle body 500 remains facing the first direction F1. When it is necessary to change the orientation of the first vehicle body 500, the user can operate the second unlocking mechanism 400 (operate the second operating member 420) to make the second locking portion 2112 retreat from the locking recess 212. Subsequently, under the action of the rotation and movement mechanism 190, the first positioning component 110 can be rotated to face any one of the second direction F2, the third direction F3, or the fourth direction F4. It should be noted that when the first vehicle body 500 rotates to face the third direction F3 along with the first positioning component 110, the first locking portion 2111 will insert into the locking recess 212 to keep the first vehicle body 500 in the third direction F3. When it is necessary to change the orientation of the first vehicle body 500 again, the user operates the second unlocking mechanism 400 or the first unlocking mechanism 300 to make the first locking portion 2111 retreat from the locking recess 212.

[0244] Suppose it is necessary to disassemble the first vehicle body 500 from the first positioning component 110 and connect the second vehicle body 600 to the first positioning component 110. According to the description above, the orientation of the first positioning component 110 can be changed first so that it faces any one of the second direction F2, the third direction F3, or the fourth direction F4. When the first positioning component 110 faces a direction other than the first direction F1, at this time, the first limiting mechanism 140 can allow the first vehicle body 500 to be disassembled from the first positioning component 110 (for the specific principle, refer to the description above). When the second vehicle body 600 is connected to the first positioning component 110, at this time, the second limiting mechanism 170 can limit the angular range of the rotation of the first positioning component 110 relative to the second positioning component 120, so that the first positioning component 110 cannot rotate to face the first direction F1 (for the specific principle, refer to the description above). When the first positioning component 110 faces the third direction F3, the first locking portion 2111 will automatically insert into the locking recess 212 of the first positioning component 110, so that the second vehicle body 600 can maintain its orientation towards the third direction F3. When it is necessary to change the orientation of the second vehicle body 600, the user can only operate the first unlocking mechanism 300 to make the first locking portion 2111 retreat from the locking recess 212, unlocking the first positioning component 500 and the second positioning component 600.

[0245] See Figures 52 to 54 , the second embodiment of the present application provides another positioning component 100, which is used to install the first vehicle body 500 or the second vehicle body 600 to an automobile seat. Specifically, the positioning component 100 includes a first positioning component 110, a second positioning component 120, a third positioning component 130, and an extension mechanism 230. Among them, the third positioning component 130 is detachably installed on the automobile seat. The third positioning component 130 is provided with a seat connection plug 125 and a support leg 126. The seat connection plug 125 is mainly used to fix the third positioning component 130 to the automobile seat, and the support leg 126 is used to abut against the floor inside the vehicle. The second positioning component 120 is rotatably arranged on the third positioning component 130. The first positioning component 110 is movably arranged on the second positioning component 120 and has an extended state and a retracted state, and the first positioning component 110 is used for detachable connection with the first vehicle body 500 or the second vehicle body 600. In this way, by rotating the second positioning component 120, the first positioning component 110 can face the first direction F1 (see Figure 52 ), the second direction F2 (see Figure 54 ), the third direction F3 (see Figure 53 ), and the fourth direction F4 (see Figure 57) in any one direction. Specifically, the second positioning component 120 and the third positioning component 130 in this embodiment are both substantially circular structures and have substantially the same radius. When the first positioning component 110 is in the retracted state, the first positioning component 110 coincides with the second positioning component 120 vertically (see Figures 52 to 54 );when the first positioning component 110 is in the extended state, the first positioning component 110 is vertically offset relative to the second positioning component 120 (see Figure 55 and Figure 57 ). The extension mechanism 230 is connected between the first positioning component 110 and the second positioning component 120 and is used to guide the first positioning component 110 to switch between the extended state and the retracted state.

[0246] It should be noted that in this embodiment, "the second positioning component 120 is rotatably arranged on the third positioning component 130" means that the second positioning component 120 can rotate around an axis relative to the third positioning component 130. In this embodiment, the second positioning component 120 is circular and the axis is its center; in other embodiments, the second positioning component 120 can be other symmetric shapes (such as an ellipse, a rectangle, etc.), and the axis can be the geometric center position of the second positioning component 120 or a position deviating from the geometric center; or, the second positioning component 120 can also be an asymmetric shape, and the axis can be set according to actual needs.

[0247] See Figure 55 and Figure 56 , in one embodiment, the extension mechanism 230 includes a first main link 231, a second main link 232 and a first auxiliary link 233. One of the first main link 231 and the second main link 232 is connected to the first positioning component 110, and the other is connected to the second positioning component 120. Both ends of the first auxiliary link 233 are pivotally connected to the first main link 231 and the second main link 232 respectively, so that the first main link 231 and the second main link 232 can approach or move away from each other. Specifically, when the first main link 231 and the second main link 232 approach each other, the first positioning component 110 is in the retracted state. When the first main link 231 and the second main link 232 move away from each other, the first positioning component 110 is in the extended state.

[0248] See Figure 56 , in one embodiment, gears 234 are respectively provided at one end of the first main link 231 and one end of the second main link 232, and the two gears 234 are meshed with each other. Both ends of the first auxiliary link 233 are pivotally connected to the centers of the two gears 234.

[0249] Continue to refer to Figure 56, in one embodiment, the stretching mechanism 230 further includes a second auxiliary rod 237. The two ends of the second auxiliary rod 237 are respectively pivotally connected to the centers of the two gears 234, and the second auxiliary rod 237 and the first auxiliary rod 233 are respectively located on both sides of the gear 234. In this way, the stability during the process of the first main link 231 and the second main link 232 approaching or separating from each other can be improved.

[0250] See again Figure 56 , in one embodiment, the stretching mechanism 230 further includes a first reinforcing rod 235, a second reinforcing rod 238, a third auxiliary rod 236 and a fourth auxiliary rod 239. Among them, the first reinforcing rod 235 is pivotally connected to the third auxiliary rod 236, and the end of the first reinforcing rod 235 far from the third auxiliary rod 236 is pivotally connected to the first auxiliary rod 233. The end of the third auxiliary rod 236 far from the first reinforcing rod 235 is pivotally connected to the first main link 231, so that the first main link 231, the first auxiliary rod 233, the first reinforcing rod 235 and the third auxiliary rod 236 form a four-bar linkage structure (hereinafter referred to as the first link assembly). The second reinforcing rod 238 is pivotally connected to the fourth auxiliary rod 239, and the end of the second reinforcing rod 238 far from the fourth auxiliary rod 239 is connected to the second auxiliary rod 237. The end of the fourth auxiliary rod 239 far from the second reinforcing rod 238 is pivotally connected to the second main link 232, so that the second main link 232, the second auxiliary rod 237, the second reinforcing rod 238 and the fourth auxiliary rod 239 also form a four-bar linkage structure (hereinafter referred to as the second link assembly). Specifically, the third auxiliary rod 236 is connected to the second positioning assembly 120, and the fourth auxiliary rod 239 is connected to the first positioning assembly 110.

[0251] See Figure 54 and Figure 55 , before the first positioning assembly 110 is stretched outwards, the first link assembly is rectangular, the second link assembly is rectangular, and the first link assembly and the second link assembly overlap. During the process of the first positioning assembly 110 being stretched outwards, the first link assembly deforms into a parallelogram, and the angles of the four interior angles of the parallelogram formed by the first link assembly gradually change; similarly, the second link assembly deforms into a parallelogram, and the angles of the four interior angles of the parallelogram formed by the second link assembly gradually change. In this embodiment, during the process of the first positioning assembly 110 being stretched outwards, the first link assembly and the second link assembly change from overlapping to mirror symmetry.

[0252] In one embodiment, as Figure 55 shown, the positioning assembly 100 includes at least one stretching mechanism 230. Specifically, in this embodiment, the positioning assembly 100 includes two stretching mechanisms 230, and the two stretching mechanisms 230 are arranged in parallel.

[0253] See Figure 58In one embodiment, the positioning assembly 100 further includes a second locking mechanism 240. The second locking mechanism 240 is disposed between the first positioning assembly 110 and the second positioning assembly 120. The second locking mechanism 240 has a second locking state and a second unlocking state. When the second locking mechanism 240 is in the second locking state, the first positioning assembly 110 is restricted from moving relative to the second positioning assembly 120, which is equivalent to the first positioning assembly 110 being unable to switch between the extended state and the retracted state. When the second locking mechanism 240 is in the second unlocking state, the first positioning assembly 110 is allowed to move relative to the second positioning assembly 120, which is equivalent to the first positioning assembly 110 being able to switch between the extended state and the retracted state.

[0254] Continue to see Figure 58 In one embodiment, the second locking mechanism 240 includes a second locking member 241 pivotally connected to the first positioning assembly 110. The second locking member 241 has an operating end 2411 and a locking end 2412, and the second positioning assembly 120 is provided with a locking mating portion 122 (e.g., a mating hole). The second locking member 241 is pivotable between a locked position and an unlocked position. When the second locking member 241 is in the locked position, the locking end 2412 can be locked and mated with the locking mating portion 122. When the second locking member 241 is in the unlocked position, the locking end 2412 can be disengaged from the locking mating portion 122. The operating end 2411 can be operated to pivot the second locking member 241 from the locked position to the unlocked position. Specifically, the pivot point between the second locking member 241 and the first positioning assembly 110 is located between the operating end 2411 and the locking end 2412, so that the second locking member 241 roughly presents a "seesaw" structure when the first positioning assembly 110 pivots, that is, when the operating end 2411 is pressed, the locking end 2412 is tilted up to be able to disengage from the locking mating portion 122.

[0255] In one embodiment, if Figure 58 As shown, the second locking mechanism 240 further includes a button 242, which is used to abut against the operating end 2411. When the second locking member 241 needs to be released, the user can push the button 242 to drive the second locking member 241 to pivot to the unlocking position.

[0256] Of course, in other embodiments not shown, the second locking mechanism 240 may also be a locking structure, for example, the locking structure includes a male buckle and a female buckle that can be engaged with each other, one of the male buckle and the female buckle being provided on the first positioning assembly 110, and the other being provided on the second positioning assembly 120. In another example, the second locking member 241 is a locking column that can be operated to move in the vertical direction, and the first positioning assembly 110 and the second positioning assembly 120 are locked or released by inserting or disengaging the second locking member 241 into or out of the locking mating portion 122.

[0257] The operation mode of the above second embodiment will be described below by taking the detachable connection between the first vehicle body 500 and the first positioning component 110 as an example. The positioning component 100 is connected inside the vehicle, and the first vehicle body 500 is connected to the first positioning component 110. Assume that the first vehicle body 500 is used in the first direction F1. When the child needs to be taken out of the first vehicle body 500, the user operates the first positioning component 110 to rotate relative to the second positioning component 120 to face the second direction F2 or the fourth direction F4, so that the first positioning component 110 faces the vehicle side door and the child faces the vehicle side door. Then the user operates the button 242 to release the second locking member 241 from the locking cooperation portion 122, and the user pulls the first positioning component 110 in the second direction F2 or the fourth direction F4, and the stretching mechanism 230 is stretched and deformed, and the first vehicle body 500 moves in the second direction F2 or the fourth direction F4.

[0258] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0259] The above embodiments only represent several implementation manners of the present application, and the description thereof is relatively specific and detailed, but it should not be understood as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A positioning component, characterized in that: It includes a first positioning component and a second positioning component. The first positioning component is rotatably arranged on the second positioning component. The first positioning component is used for detachably connecting to a vehicle body, and the vehicle body is a first vehicle body or a second vehicle body. Among them, when the first positioning component is used to connect to the first vehicle body and rotates relative to the second positioning component to face the first direction, the first positioning component can limit the first vehicle body from detaching from the first positioning component; when the first positioning component is used to connect to the second vehicle body, the first positioning component is restricted from rotating relative to the second positioning component to face the first direction.

2. The positioning assembly according to claim 1, characterized in that It further includes: a first connection mechanism, which is arranged on the first positioning component and has a locked state and an unlocked state. When the first connection mechanism is in the locked state, the first connection mechanism is connected to the vehicle body. When the first connection mechanism is in the unlocked state, the first connection mechanism is detached from the vehicle body; and a first limiting mechanism, which is arranged between the first positioning component and the second positioning component and is used for selectively allowing or restricting the first connection mechanism to switch between the locked state and the unlocked state.

3. The positioning component according to claim 2, wherein It further includes: a locking and holding mechanism, which is movably arranged on the first positioning component and is used for holding the connection between the first connection mechanism and the vehicle body; among them, when the first positioning component is used to connect to the first vehicle body and faces the first direction, the first limiting mechanism enters the moving path of the locking and holding mechanism to limit the movement of the locking and holding mechanism, so as to limit the first connection mechanism from switching from the locked state to the unlocked state.

4. The positioning component according to claim 2 or 3, characterized in that, The first limiting mechanism includes: a first limiting groove, which is arranged on the surface of the second positioning component facing the first positioning component; and a first limiting member, which is movably arranged on the first positioning component and can be inserted into or withdrawn from the first limiting groove; among them, when the first limiting member is inserted into the first limiting groove, the first limiting member allows the first connection mechanism to switch to the unlocked state; when the first limiting member withdraws from the first limiting groove, the first limiting member restricts the first connection mechanism from switching to the unlocked state; and when the first positioning component rotates relative to the second positioning component to face the first direction, the first limiting member withdraws from the first limiting groove.

5. The positioning component according to claim 4, wherein The first positioning component has a rotation axis, and the first limiting member is arranged offset from the rotation axis; a straight line passing through the rotation axis and perpendicular to the first direction is defined as a reference straight line. When the first positioning component faces the first direction, the first limiting member and the first limiting groove are misaligned and are respectively located on both sides of the reference straight line.

6. The positioning assembly according to claim 5, characterized in that The first positioning component is a circular structure, the rotation axis is the center of the first positioning component, the first limiting groove is a semicircular groove, the radius of the semicircular groove is the distance between the first limiting member and the center of the first positioning component, and when the first positioning component is rotated relative to the second positioning component to face away from the first direction, the first limiting member is located at the midpoint of the first limiting groove.

7. The positioning component according to claim 4, wherein An end of the first limiting member facing the second positioning assembly is provided with a sliding slope, and the sliding slope can push the first limiting groove to move the first limiting member out of the first limiting groove in a direction away from the second positioning assembly.

8. The positioning component according to claim 7, wherein The first positioning assembly includes a first housing, the first connecting mechanism includes a latch hook, the latch hook is pivotally connected to the first housing and has a locked position and a released position; When the engaging hook is located at the locking position, the engaging hook is used to engage and lock with the carrier body.

9. The positioning component according to claim 8, wherein The first housing has a first mounting cavity, and the positioning assembly further includes: A locking and holding mechanism is movably arranged in the first mounting cavity. When the engaging hook is driven to the locking position, the locking and holding mechanism is used to lock the engaging hook at the locking position.

10. The positioning assembly according to claim 9, characterized in that The lock-retention mechanism includes a first locking member movably disposed within the first mounting cavity and having a first position and a second position; One of the first locking member and the locking hook is provided with a locking groove, and the other is provided with a locking portion; when the first locking member is in the first position, the locking groove engages with the locking portion to lock the locking hook in the locking position; when the first locking member is in the second position, the locking groove is separated from the locking portion to allow the locking hook to switch between the locking position and the unlocking position.

11. The positioning assembly according to claim 10, characterized in that When the first limiting member retreats from the first limiting groove, the first limiting member is located in the moving path of the first locking member to limit the first locking member from switching from the first position to the second position; When the first limiting member is inserted into the first limiting groove, the first limiting member deviates from the moving path of the first locking member to allow the first locking member to switch from the first position to the second position.

12. The positioning component according to claim 1, wherein It also includes a second limiting mechanism, which is arranged between the first positioning component and the second positioning component and is used to selectively limit the angular range of rotation of the first positioning component relative to the second positioning component.

13. The positioning assembly according to claim 12, characterized in that The second limiting mechanism has a first state and a second state. When the second limiting mechanism is in the first state, the first positioning assembly is limited from rotating relative to the second positioning assembly toward the first direction. When the second limiting mechanism is in the second state, the first positioning assembly is allowed to rotate relative to the second positioning assembly toward the first direction. The positioning assembly also includes an elastic member; wherein, the elastic member always keeps the second limiting mechanism in the first state, and when the first positioning assembly is used to connect to the first carrier body, the second limiting mechanism is in the second state by overcoming the elastic force of the elastic member through the first carrier body; or, the elastic member always keeps the second limiting mechanism in the second state, and when the first positioning assembly is used to connect to the second carrier body, the second limiting mechanism is in the first state by overcoming the elastic force of the elastic member through the second carrier body.

14. The positioning component according to claim 13, characterized in that, The second limiting mechanism includes: a second limiting groove, provided in one of the second positioning component and the first positioning component; and a second limiting member, movably disposed on the other of the second positioning assembly and the first positioning assembly and capable of being inserted into or withdrawn from the second limiting groove; When the first positioning assembly is used to connect to the second carrier body, the second limiting member is inserted into the second limiting groove, and the first positioning assembly is restricted from rotating relative to the second positioning assembly toward the first direction.

15. The positioning component according to claim 14, wherein The first positioning assembly has a rotation axis, and the second limiting member is arranged offset from the rotation axis; A straight line passing through the rotation axis and perpendicular to the first direction is defined as a reference straight line. When the first positioning component is facing the first direction, the second limiting member and the second limiting groove are offset and respectively located on both sides of the reference straight line.

16. The positioning component according to claim 15, characterized in that, The first positioning component is a circular structure, the rotation axis is the center of the first positioning component, the second limiting groove is a semicircular groove, the radius of the semicircular groove is the distance between the second limiting member and the center of the first positioning component, and when the first positioning component is rotated relative to the second positioning component to face away from the first direction, the second limiting member is located at the midpoint of the second limiting groove.

17. The positioning assembly according to claim 14, wherein: It also includes a linkage mechanism, which is arranged on the first positioning assembly and is used to be drivingly connected to the second limiting member. The linkage mechanism can drive the second limiting member to withdraw from or insert into the second limiting groove.

18. The positioning assembly according to claim 17, characterized in that The linkage mechanism includes a linkage member, which is movably arranged in the first positioning assembly and has a third position and a fourth position. A first oblique groove is provided at the first end of the linkage member, and the second limiting member is slidably arranged in the first oblique groove at one end away from the second limiting groove; when the linkage member moves to the third position, the second limiting member is inserted into the second limiting groove; when the linkage member moves to the fourth position, the second limiting member retreats from the second limiting groove.

19. The positioning assembly according to claim 18, characterized in that The linkage mechanism further includes a pressing member, which is movably arranged on the first positioning assembly and has a fifth position and a sixth position. The pressing member is provided with a second inclined slot, and the second end of the linkage member is slidably arranged in the second inclined slot. When the pressing member is in the fifth position, the linkage member is in the third position; when the pressing member is in the sixth position, the linkage member is in the fourth position.

20. The positioning component according to claim 19, characterized in that, When the first positioning assembly is used to connect with the second vehicle body, the pressing member is in the fifth position, and the linkage member is in the third position.

21. The positioning assembly according to claim 1, wherein The positioning assembly further includes a first locking mechanism disposed between the first positioning assembly and the second positioning assembly. The first locking mechanism has a first locking state and a first unlocking state. When the first locking mechanism is in the first locking state, the first positioning assembly is restricted from rotating relative to the second positioning assembly. When the first locking mechanism is in the first unlocking state, the first positioning assembly is allowed to rotate relative to the second positioning assembly.

22. The positioning assembly according to claim 21, characterized in that The first locking mechanism includes: a locking assembly movably disposed in one of the second positioning assembly and the first positioning assembly; and a locking recess disposed in the other of the second positioning assembly and the first positioning assembly; wherein when the locking assembly is inserted into the locking recess, the first positioning assembly and the second positioning assembly are locked in cooperation to restrict the first positioning assembly from rotating relative to the second positioning assembly; when the locking assembly withdraws from the locking recess, the first positioning assembly can rotate relative to the second positioning assembly.

23. The positioning assembly according to claim 22, wherein the locking assembly includes a first locking portion movably disposed in one of the second positioning assembly and the first positioning assembly along the first direction; when the first positioning assembly rotates relative to the second positioning assembly to face one of the first direction and the direction opposite to the first direction, the first locking portion can be locked in cooperation with the locking recess.

24. The positioning assembly according to claim 23, wherein the positioning assembly further includes a first unlocking mechanism capable of being operably connected to the first locking portion and used to drive the first locking portion out of the locking recess.

25. The positioning component according to claim 24, wherein The first locking portion is movably disposed in the second positioning assembly, the locking recess is disposed in the first positioning assembly, and the first unlocking mechanism includes: a first driving member pivotally connected to the second positioning assembly and pivotally connected to the first locking portion; a first operating member operably disposed in the second positioning assembly; and a first traction assembly respectively connected to the first operating member and the first driving member; wherein when the first operating member is operated, the first operating member drives the first driving member to pivot through the first traction assembly, so that the first driving member can drive the first locking portion out of the locking recess.

26. The positioning assembly according to any one of claims 23 to 25, wherein The locking assembly further includes a second locking portion, the second locking portion is movably disposed on one of the second positioning assembly and the first positioning assembly, and the second locking portion and the first locking portion are oppositely disposed along the first direction; When the first positioning assembly rotates relative to the second positioning assembly to face the other of the first direction and the direction opposite to the first direction, the second locking portion can be in locking cooperation with the locking recess.

27. The positioning component according to claim 1, wherein The second positioning assembly includes a second housing, a convex body protrudes from the upper surface of the second housing, the convex body forms a limiting convex portion, a groove-shaped structure is formed between the limiting convex portion and the upper surface of the second housing, the first positioning assembly includes a first housing, when the first positioning assembly faces the first direction or the direction opposite to the first direction relative to the second positioning assembly, a part of the edge of the first housing is inserted into the groove-shaped structure.

28. The positioning component according to claim 27, wherein The second positioning assembly includes a skeleton and at least one first support mechanism, the first support mechanism includes a first support member and a second support member, the first support member is fixed to the skeleton, the second support member is supported by the first support member, when the first positioning assembly faces the first direction or the direction opposite to the first direction relative to the second positioning assembly, at least a part of the second support member is located below the first positioning assembly.

29. The positioning assembly according to claim 1, wherein The second positioning assembly further includes a third support mechanism and a second housing, the second housing includes a second top cover and a second bottom cover connected to each other, the third support mechanism includes a plurality of support columns, each support column includes a bottom column disposed on the second bottom cover and a top column disposed on the second top cover, and the bottom column is connected to the top column.

30. A vehicle, characterized in that, Comprising: The positioning assembly according to any one of claims 1-29; And A vehicle body, detachably connected to the first positioning assembly of the positioning assembly, the vehicle body being a first vehicle body or a second vehicle body.

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