Child restraint system and positioning assembly thereof

Abstract

Disclosed are a child restraint system and a positioning assembly (100a, 100b) thereof. The positioning assembly (100a) includes a first positioning component (1) and a second positioning component (2). A first track (21E1, 21E2, 21E1', 21E2', 21E3, 21E4, 21E5, 21E6, 21E7, 21E8, 121E1, 121E2) and a second track (22E1, 22E2, 22E1', 22E2', 22E3, 22E4, 22E5, 22E6, 22E7, 22E8, 122E1, 122E2) are arranged on one of the first positioning component (1) and the second positioning component (2), and a first sliding member (121a, 221a) and a second sliding member (121b, 221b) are arranged on the other of the first positioning component (1) and the second positioning component (2). The first sliding member (121a, 221a) is slidable along the first track, and the second sliding member (121b, 221b) is slidable along the second track. The first positioning component (1) is rotatable and movable relative to the second positioning component (2) along the first track and the second track wherein said first track is curved or circular and said second track is straight.

Description

CHILD RESTRAINT SYSTEM AND POSITIONING ASSEMBLY THEREOFCROSS-REFERENCES TO RELATED APPLICATIONS

[0001] This application claims priorities to Chinese Patent Application No. 202411888819.6, filed on December 19, 2024, and entitled "CHILD RESTRAINT SYSTEM AND POSITIONING ASSEMBLY THEREOF", Chinese Patent Application No. 202311794840.5, filed on December 22, 2023, and entitled "CHILD RESTRAINT SYSTEM AND POSITIONING ASSEMBLY THEREOF", and Chinese Patent Application No. 202410269778.6, filed on March 8, 2024, and entitled "CHILD RESTRAINT SYSTEM AND POSITIONING ASSEMBLY THEREOF", which are incorporated herein by reference in their entireties.TECHNICAL FIELD

[0002] Embodiments of the present disclosure relates to technologies for child restraint systems in vehicles, and in particular, to a child restraint system and a positioning assembly thereof.BACKGROUND

[0003] At present, child safety seats have been used widely and frequently. Existing child safety seats are generally fixed on the rear seats of vehicles. When children need to be seated, they need to be placed in child safety seats. However, due to influences of factors such as the size of a vehicle door, the height of a space inside the vehicle, the distance between a vehicle seat and the vehicle door, and the size of the child, it is rather inconvenient to pick up or place the child, and the child may even have his / her head hit frequently, or the child safety seat may collide with the vehicle door when it is rotated towards a side the vehicle, which greatly reduces usage and operation experience and satisfaction of using the child safety seat.SUMMARY

[0004] The purpose of the present application is to provide a child restraint system and a positioning assembly thereof, which can push the child safety seat or a child basket to be in a state of extending to a side proximate to a vehicle door to facilitate carrying a child in or out, or which can enable the child safety seat or the child basket to slide to another side away from the vehicle door while the child safety seat or the child basket is rotating to face the side proximate to a vehicle door, thereby preventing the child safety seat or the child basket from colliding with the vehicle door.

[0005] To achieve the above-mentioned purpose, one aspect of the present application provides a positioning assembly. The positioning assembly includes: a first positioning component and a second positioning component. A first track is arranged on one of the first positioning component and the second positioning component, and a first sliding member is arranged on the other of the first positioning component and the second positioning component, and the first sliding member is slidable along the first track. A second track is arranged on the one of the first positioning component and the second positioning component, and a second sliding member is arranged on the other of the first positioning component and the second positioning component, and the second sliding member is slidable along the second track. The first positioning component is rotatable and movable relative to the second positioning component along the first track and the second track, and the first track is an arc track or a circular track, and the second track is a straight track.

[0006] In one of the embodiments, the positioning assembly further includes a third positioning component, where the second positioning component is fixedly arranged on the third positioning component and located between the first positioning component and the third positioning component.

[0007] In one of the embodiments, the first sliding member and the second sliding member are arranged on the first positioning component, and the second positioning component includes the first track and the second track.

[0008] In one of the embodiments, the first track is an arc track. The first track is arranged between a left-right center line of the second positioning component and a point located in a front-back center line and in a front portion of the second positioning component, or the first track is arranged between the left-right center line of the second positioning component and a point located in the front-back center line and in a rear portion of the second positioning component. The first track is located on one of a left portion and a right portion of the second positioning component. The second track is a straight track, extending along the left-right center line from the center point of the second positioning component to the other of the left portion and the right portion.

[0009] In one of the embodiments, a distance from the center point of the second positioning component to an intersection point where the first track and the front-back center line intersect, is greater than a distance from the center point of the second positioning component to an intersection point where the first track and the left-right center line Y intersect; where the intersection point where the first track and the front-back center line intersect is the point located in the front-back center line and in the front portion of the second positioning component, or the point located in the front-back center line and in the rear portion of the second positioning component.

[0010] In one of the embodiments, corresponding to the positioning assembly being in a forward-facing sitting mode or in a rear-facing sitting mode: the first sliding member is arranged at a first position on a lower surface of the first positioning component, and the first position corresponds to the intersection point where the first track and the front-back center line intersect; and the second sliding member is arranged at a second position on the lower surface of the first positioning component, and the second position corresponds to the center point of the second positioning component.

[0011] In one of the embodiments, a first track is an arc track; the first track is arranged between a point located in a front portion and a point located in a rear portion, and located on one of a left portion and a right portion of the second positioning component, wherein the point located in the front portion and the point located in the rear portion are located in a front-back center line of the second positioning component. A second track is a straight track, and the second track is configured to extend along a leftright center line of the second positioning component from the center point of the second positioning component to the other of the left portion and the right portion.

[0012] In one of the embodiments, a distance between intersection points where the first track and the front-back center line intersect, is greater than twice of a distance between the center point of the second positioning component and an intersection point where the first track and the left-right center line intersect.

[0013] In one of the embodiments, corresponding to the positioning assembly being in a forward-facing sitting mode or a rear-facing sitting mode: the first sliding member is arranged at a first position on a lower surface of the first positioning component, and the first position corresponds to any one of the intersection points where the first track and the front-back center line intersect; and the second slidingmember is arranged at a second position on the lower surface of the first positioning component, and the second position corresponds to the center point of the second positioning component.

[0014] In one of the embodiments, the first track is a circular track, and the first track is configured to surround the center point of the second positioning component; and the second track is a straight track, and the second track extends to the left and to the right along a left-right center line from the center point of the second positioning component to the outside of the first track, or extends to the left and to the right along a direction parallel to the left-right center line to the outside of the first track.

[0015] In one of the embodiments, a distance between a frontmost end and a rearmost end of the circular track is greater than a distance between a leftmost end and a rightmost end of the circular track.

[0016] In one of the embodiments, the first track is an elliptical track centered on the center point of the second positioning component, and a straight line connecting the frontmost end and the rearmost end of the elliptical track is the major axis of the elliptical track, a straight line connecting the leftmost end and the rightmost end of the elliptical track is the minor axis of the elliptical track; and the second track is a straight track, and the second track is located in the minor axis of the elliptical track and configured to extend to the outside of the elliptical track.

[0017] In one of the embodiments, corresponding to the positioning assembly being in a forward-facing sitting mode or a rear-facing sitting mode, the first sliding member is arranged on a lower surface of the first positioning component and located at a position corresponding to a rearmost end or a frontmost end of the first track, and the second sliding member is arranged on a lower surface of the first positioning component and located at a position corresponding to the center point of the second track.

[0018] In one of the embodiments, corresponding to the first positioning component in a state of extending to a left side, the first sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to a rightmost end of the first track, and the second sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to a leftmost end of the second track; and / or corresponding to the first positioning component in a state of extending to a right side, the first sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to a leftmost end of the first track, and the second sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to a rightmost end of the second track.

[0019] In one of the embodiments, corresponding to the first positioning component in a state of drawing back towards a left side, the first sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to a rightmost end of the first track, and the second sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to a leftmost end of the second track; and / or corresponding to the first positioning component in a state of drawing back towards a right side, the first sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to a leftmost end of the first track, and the second sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to a rightmost end of the second track.

[0020] In one of the embodiments, a length of the second track is greater than or equal to a difference between a length of the major axis and a length of the minor axis.

[0021] In one of the embodiments, the first sliding member is sleeved with a first bearing, and the first bearing engages with the first track; and the second sliding member is sleeved with a second bearing, and the second bearing engages with the second track.

[0022] In one of the embodiments, an outer contour dimension of the first bearing is larger than an outer contour dimension of the second bearing, or the outer contour dimension of the first bearing is larger than a width of the second track.

[0023] In one of the embodiments, the second positioning component further includes a third track. The third track is arranged below the second track. The second sliding member is configured to pass through the second track and to be inserted into the third track.

[0024] In one of the embodiments, the third positioning component includes a bracket, and the bracket is disposed at the bottom of the third positioning component; and the positioning assembly further includes a first limiting hook and a second limiting hook, wherein the first limiting hook and the second limiting hook are disposed at a frontmost end and a rearmost end of the third positioning component respectively; an upper end of the first limiting hook and an upper end of the second limiting hook are configured to extend upward and stick out of the second positioning component, and configured to engage with the first positioning component; and a lower end of the first limiting hook and a lower end of the second limiting hook are respectively fixed to the bracket.

[0025] In one of the embodiments, at least one engaging mechanism is provided on an upper surface of the first positioning component.

[0026] In one of the embodiments, the first track is a circular track, and the first track is configured to surround the center point of the second positioning component; and the second track is a straight track, and the second track is configured to extend to the left and the right respectively along a direction parallel to a left-right center line of the second positioning component and reach the outside of the first track.

[0027] In one of the embodiments, a distance between a frontmost end and a rearmost end of the first track is greater than a distance between a leftmost end and a rightmost end of the first track. Corresponding to the positioning assembly being in a forward-facing sitting mode or a rear-facing sitting mode, the first sliding member is arranged on a lower surface of the first positioning component and located at a position corresponding to a rearmost end or a frontmost end of the first track, and the second sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to the center point of the second track.

[0028] In one of the embodiments, the first track is a circular track, and the circular track is configured to surround the center point of the second positioning component, and a distance between a leftmost end and a rightmost end of the first track is greater than a distance between a frontmost end and a rearmost end of the first track.

[0029] The second track is a straight track, and the second track is configured to extend forwards and backwards along a front-back center line from the center point of the second positioning component to the outside of the first track, or configured to extend forwards and backwards along a direction parallel to the front-back center line of the second positioning component and reach the outside of the first track.

[0030] In one of the embodiments, corresponding to the positioning assembly being in a forward-facing sitting mode: the first sliding member is arranged on a lower surface of the first positioning component, and located at a position corresponding to the frontmost end of the first track; and the second sliding member is arranged on the lower surface of the first positioning component, and located at a position corresponding to a rearmost end of the second track.

[0031] In one of the embodiments, corresponding to the first positioning component being in a state of extending to a left side, the first sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to the leftmost end of the first track, and the second sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to the center point of the second track.

[0032] In one of the embodiments, corresponding to the first positioning component being in a state of extending to a right side, the first sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to the rightmost end of the first track, and the second sliding member is located at a position corresponding to the center point of the second track.

[0033] In one of the embodiments, corresponding to the positioning assembly being in a forward-facing sitting mode, the first sliding member is arranged on a lower surface of the first positioning component and located at a position corresponding to the rearmost end of the first track, and the second sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to a frontmost end of the second track.

[0034] In one of the embodiments, corresponding to the first positioning component being in a state of drawing back towards a right side, the first sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to the rightmost end of the first track, and the second sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to a center point of the second track.

[0035] In one of the embodiments, corresponding to the first positioning component being in a state of drawing back towards a left side, the first sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to the leftmost end of the first track, and the second sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to the center point of the second track.

[0036] In one of the embodiments, the first track is an elliptical track centered at the center of the second positioning component, and a line connecting the leftmost end and the rightmost end of the elliptical track is the major axis of the elliptical track. The second track is a straight track located in the minor axis of the elliptical track and configured to extend to the outside of the elliptical track.

[0037] In one of the embodiments, a first track and a second track are arranged on the first positioning component, and a first sliding member and a second sliding member are arranged on the second positioning component.

[0038] In one of the embodiments, the first track is a circular track, and the first track is configured to surround a center point of the first positioning component, and a distance between a frontmost end and a rearmost end of the first track is greater than a distance between a leftmost end and a rightmost end of the first track.

[0039] The second track is a straight track; the second track is configured to extend along a left-right center line from a center point of the first positioning component to the left and to the right and reach the outside of the first track, or configured to extend along a direction parallel to the left-right center line from the center point of the first positioning component to the left and to the right and reach the outside of the first track.

[0040] In one of the embodiments, corresponding to the positioning assembly being in a forward-facing sitting mode: the first sliding member is arranged on an upper surface of the second positioning component and located at a position corresponding to the leftmost end of the first track; and the secondsliding member is arranged on the upper surface of the second positioning component and located at a position corresponding to a rightmost end of the second track.

[0041] In one of the embodiments, corresponding to the first positioning component being in a state of extending to a right side, the first sliding member is arranged on the upper surface of the second positioning component, and the rearmost end of the first track is located at a position corresponding to the first sliding member; and the second sliding member is arranged on the upper surface of the second positioning component, and a center point of the second track is located at a position corresponding to the second sliding member.

[0042] In one of the embodiments, corresponding to the first positioning component being in a state of drawing back towards the right side, the first sliding member is arranged on the upper surface of the second positioning component, and the frontmost end of the first track is located at a position corresponding to the first sliding member; the second sliding member is arranged on the upper surface of the second positioning component, and the center point of the second track is located at a position corresponding to the second sliding member.

[0043] In one of the embodiments, corresponding to the positioning assembly being in a forward-facing sitting mode, the first sliding member is arranged on an upper surface of the second positioning component and located at a position corresponding to the rightmost end of the first track; and the second sliding member is arranged on the upper surface of the second positioning component and located at a position corresponding to a leftmost end of the second track.

[0044] In one of the embodiments, corresponding to the first positioning component being a state of extending to the left side, the first sliding member is arranged on the upper surface of the second positioning component, and the rearmost end of the first track is located at a position corresponding to the first sliding member; and the second sliding member is arranged on the upper surface of the second positioning component, and the center point of the second track is located at a position corresponding to the second sliding member.

[0045] In one of the embodiments, corresponding to the first positioning component being in a state of drawing back towards a left side, the first sliding member is arranged on the upper surface of the second positioning component, and the frontmost end of the first track is located at a position corresponding to the first sliding member; the second sliding member is arranged on the upper surface of the second positioning component, and a center point of the second track is located at a position corresponding to the second sliding member.

[0046] In one of the embodiments, the first track is an elliptical track centered at the center of the first positioning component, and a line connecting the frontmost end and the rearmost end of the first track is the major axis of the elliptical track. The second track is a straight track located in the minor axis of the elliptical track and configured to extend to the outside of the elliptical track.

[0047] In one of the embodiments, the first track is a circular track; the first track is configured to surround a center point of the first positioning component; and a distance between a leftmost end and a rightmost end of the first track is greater than a distance between a frontmost end and a rearmost end of the first track.

[0048] The second track is a straight track; the second track is configured to extend forwards and backwards along a front-back center line from the center point of the first positioning component and reach the outside of the first track, or configured to extend forwards and backwards along a directionparallel to the front-back center line from the center point of the first positioning component to the outside of the first track.

[0049] In one of the embodiments, corresponding to the positioning assembly being in a forward-facing sitting mode, the first sliding member is arranged on an upper surface of the second positioning component and located at a position corresponding to the leftmost end of the first track, and the second sliding member is arranged on the upper surface of the second positioning component and located at a position corresponding to a center point of the second track.

[0050] In one of the embodiments, corresponding to the first positioning component being in a state of extending to a left side, the first sliding member is arranged on the upper surface of the second positioning component, and the frontmost end of the first track is located at a position corresponding to the first sliding member; and the second sliding member is arranged on the upper surface of the second positioning component, and a rearmost end of the second track is located at a position corresponding to the second sliding member.

[0051] In one of the embodiments, corresponding to the first positioning component being in a state of drawing back towards the left side, the first sliding member is arranged on the upper surface of the second positioning component, and the rearmost end of the first track is located at a position corresponding to the first sliding member; and the second sliding member is arranged on the upper surface of the second positioning component, and a frontmost end of the second track is located at a position corresponding to the second sliding member.

[0052] In one of the embodiments, corresponding to the positioning assembly being in a forward-facing sitting mode, the first sliding member is arranged on an upper surface of the second positioning component and located at a position corresponding to the rightmost end of the first track, and the second sliding member is arranged on the upper surface of the second positioning component and located at a position corresponding to a center point of the second track.

[0053] In one of the embodiments, corresponding to the first positioning component being in a state of extending to a right side, the first sliding member is arranged on the upper surface of the second positioning component, and the frontmost end of the first track is located at a position corresponding to the first sliding member; and the second sliding member is arranged on the upper surface of the second positioning component, and a rearmost end of the second track is located at a position corresponding to the second sliding member.

[0054] In one of the embodiments, corresponding to the first positioning component being in a state of drawing back towards the right side, the first sliding member is arranged on the upper surface of the second positioning component, and the rearmost end of the first track is located at a position corresponding to the first sliding member; and the second sliding member is arranged on the upper surface of the second positioning component, and a frontmost end of the second track is located at a position corresponding to the second sliding member.

[0055] In one of the embodiments, the first track is an elliptical track centered on the center of the first positioning component, and a line connecting the leftmost end and the rightmost end of the first track is the major axis of the elliptical track. The second track is a straight track located in the minor axis of the elliptical track and configured to extend to the outside of the elliptical track.

[0056] Another aspect of the present application provides a positioning assembly, including a first positioning component and a second positioning component. The positioning assembly further includes a connecting rod; one end of the connecting rod is pivotally connected to the first positioning component,and the other end of the connecting rod is pivotally connected to the second positioning component; the connecting rod is configured to enable the first positioning component to move in a vertical direction and / or a horizontal direction relative to the second positioning component.

[0057] In one of the embodiments, the positioning assembly further includes a third positioning component. The second positioning component is rotatably arranged on the third positioning component and located between the first positioning component and the third positioning component.

[0058] In one of the embodiments, the positioning assembly further includes a locking member, wherein the locking member is configured to lock or release the first positioning component and the second positioning component.

[0059] In one of the embodiments, the locking member includes a locking hook and a locking hole. The locking hook is pivotally connected to the first positioning component, and the locking hook includes a free end and a locking end; and the locking end is configured to engage with the locking hole or to be released from the locking hole.

[0060] In one of the embodiments, the first positioning component includes an upper seat body and a lower seat body, and the upper seat body and the lower seat body are fixedly connected to each other. A first pivot shaft is arranged on the lower seat body. One end of the first pivot shaft is fixedly connected to the lower seat body, and the other end of the first pivot shaft is pivotally connected to a portion of the locking hook between the free end and the locking end.

[0061] In one of the embodiments, a button is arranged on upper seat body and disposed at a position proximate to the free end of the locking hook and configured to be operated to press the free end of the locking hook rotate around the first pivot axis. A first elastic member is sleeved on the first pivot axis, and the first elastic member is configured to enable the locking end to press against a side wall of the locking hole in a direction in which the button pushes the free end.

[0062] In one of the embodiments, a side surface of the locking end of the locking hook is an inclined surface, and the inclined surface is a side surface of the locking end abutting against the side wall of the locking hole under the action of the first elastic member to guide the locking end into the locking hole.

[0063] In one of the embodiments, a first end of the connecting rod has a first pivot hole, and a second end of the connecting rod has a second pivot hole. A third pivot shaft is arranged on the first positioning component, and third pivot shaft is pivotally connected to the first pivot hole. A second pivot shaft is fixedly arranged on the second positioning component, and the second pivot shaft is pivotally connected to the second pivot hole.

[0064] In one of the embodiments, a second elastic member is sleeved on the second pivot shaft, and the second elastic member is configured to drive the connecting rod to push the first positioning component to move upward.

[0065] In one of the embodiments, a support rod is fixedly arranged on the second positioning component, and the second pivot shaft is arranged on the support rod.

[0066] In one of the embodiments, the number of connecting rods is four. The number of support rods is two, and two ends of each support rod are fixedly arranged on the second positioning component. Each support rod is provided with two second pivot shafts; one end of each second pivot shaft is fixedly connected to the support rod, and the other end of each second pivot shaft is pivotally connected to a second pivot hole of a corresponding connecting rod.

[0067] In one of the embodiments, a limiting rod is arranged between the two support rods, and two ends of the limiting rod are fixedly connected to the two support rods respectively. A limiting groove isformed on a lower surface of the first positioning component, and when the first positioning component and the second positioning component are locked together, the limiting rod is locked in the limiting groove.

[0068] In one of the embodiments, each support rod has two fixing protrusions arranged thereon, and each connecting rod further has a fixing hole. One end of each second elastic member is fixedly connected to a corresponding fixing protrusion, and the other end of each second elastic member is fixedly connected to a fixing hole of a corresponding connecting rod.

[0069] In one of the embodiments, a length of the connecting rod is configured to enable the first positioning component to extend to a side of the second positioning component.

[0070] In one of the embodiments, a support rod is fixedly arranged on the second positioning component, and a sliding component is sleeved on the support rod; the sliding component and the bottom of the second positioning component are spaced apart; one end of the connecting rod is pivotally connected to the first positioning component, and the other end of the connecting rod is pivotally connected to the sliding component.

[0071] In one of the embodiments, the number of connecting rods is four. The number of support rods is two, and two ends of each support rod are fixedly arranged on the second positioning component; the number of the sliding components is two. Each support rod is provided with two second pivot shafts; one end of each second pivot shaft is fixedly connected to a corresponding sliding component, and the other end of each second pivot shaft is pivotally connected to the second pivot hole of a corresponding connecting rod.

[0072] In one of the embodiments, two support rods are fixedly arranged on the second positioning component, and a limiting rod is arranged between the two support rods, and two ends of the limiting rod are fixedly connected to the two support rods respectively. The limiting rod is configured to, after the locking end is disengaged from the locking hole, limit the locking hook to be at one position.

[0073] In one of the embodiments, a limiting groove is formed on a lower surface of the first positioning component, and when the first positioning component and the second positioning component are locked together, the locking end of the locking hook engages with the locking hole, and the limiting rod is locked in the limiting groove.

[0074] In one of the embodiments, each sliding component has two fixing protrusions arranged thereon, and each connecting rod further has a fixing hole. One end of each second elastic member is fixedly connected to a corresponding fixing protrusion, and the other end of each second elastic member is fixedly connected to the fixing hole of a corresponding connecting rod.

[0075] The present application further provides a child restraint system, used for being installed on a vehicle seat and including a child safety seat or a child basket, and any one of the positioning assemblies above. The child safety seat or the child basket is detachably arranged on the positioning assembly.

[0076] In one of the embodiments, at least one engaging mechanism is disposed on an upper surface of the first positioning component of the positioning assembly, and the child safety seat or the child basket is configured to engage with or to be disengaged from the at least one engaging mechanism.

[0077] In one of the embodiments, the child restraint system further includes a support leg. The positioning assembly further includes a third positioning component. The second positioning component is fixedly arranged on the third positioning component and located between the first positioning component and the third positioning component; or the second positioning component is rotatably arranged on the third positioning component and located between the first positioning component andthe third positioning component. One end of the support leg is fixedly connected to the third positioning component of the positioning assembly, and the other end of the support leg is configured to press against a bottom plate of a vehicle.

[0078] In the child restraint system and the positioning assembly thereof provided by the present application, the positioning assembly includes the first positioning component and the second positioning component. The first positioning component is be slidably or pivotally arranged on the second positioning component. In an actual use, the child restraint system is installed on a vehicle seat. The child safety seat or the child basket can be detachably or fixedly installed on the positioning assembly. By rotating the child safety seat or the child basket, the child safety seat or the child basket is rotated and moves toward a lateral position along with the first positioning component of the positioning assembly, and the child safety seat or the child basket is in a state of extending to one side, so that the child safety seat or the child basket is closer to the vehicle door, thereby making it convenient to carry a child in or out, and improving the usage and operation experience and the satisfaction for the child safety seat or the child basket. The child safety seat described hereinafter, alternatively, may be the child basket.

[0079] The foregoing features and elements may be combined in various combinations without exclusivity, unless expressly indicated otherwise. Features which are described in the context of separate aspects and embodiments may be used together and / or be interchangeable. Similarly, features described in the context of a single embodiment may also be provided separately or in any suitable subcombination. These features and elements as well as the operation thereof will become more apparent in light of the following description and the accompanying drawings. It should be understood, however, that the following description and drawings are intended to be illustrative and explanatory in nature and non-limiting.BRIEF DESCRIPTION OF THE DRAWINGS

[0080] The following description should not be considered limiting in any way. Referring to the accompanying drawings, similar components are represented by similar reference numerals:

[0081] FIG. 1 is a schematic structural view showing a positioning assembly according to an embodiment of a first aspect of the present application;

[0082] FIG. 2 is a schematic view showing a first positioning component of a positioning assembly according to an embodiment of the first aspect of the present application;

[0083] FIG. 3a is a schematic structural view showing a second positioning component of the positioning assembly according to an embodiment of the first aspect of the present application, with the second positioning component is installed on a third positioning component;

[0084] FIG. 3b is a schematic structural view showing a second positioning component of the positioning assembly according to another embodiment of the first aspect of the present application;

[0085] FIG. 4 is a three-dimensional view showing a positioning assembly in a forward-facing sitting mode according to an embodiment of the present application;

[0086] FIG. 5 is a schematic structural view showing positions of a first sliding member and a second sliding member of the first positioning component when the first positioning component of the positioning assembly extends to the left side according to an embodiment of the first aspect of the present application;

[0087] FIG. 6 is a three-dimensional schematic view showing the first positioning component of the positioning assembly in a state of extending to the left side according to an embodiment of the first aspect of the present application;

[0088] FIG. 7a is a schematic structural view showing a second positioning component of the positioning assembly according to yet another embodiment of the first aspect of the present application;

[0089] FIG. 7b is a schematic structural view showing a second positioning component of the positioning assembly according to yet another embodiment of the first aspect of the present application;

[0090] FIG. 8 is a schematic structural view showing positions of the first sliding member and the second sliding member of the first positioning component when the first positioning component of a positioning assembly in yet another embodiment of the first aspect of the present application extends to the right side;

[0091] FIG. 9 is a three-dimensional schematic view showing the first positioning component of a positioning assembly in a state of extending to the right side according to yet another embodiment of the first aspect of the present application;

[0092] FIG. 10 is a schematic structural view showing a second positioning component of a positioning assembly according to embodiments of a second aspect of the present application;

[0093] FIG. 11 is a schematic structural view showing a second positioning component of a positioning assembly according to an embodiment of the second aspect of the present application;

[0094] FIG. 12 is a schematic structural view showing positions of the first sliding member and the second sliding member of the first positioning component when the first positioning component of a positioning assembly extends to the left side according to an embodiment of the second aspect of the present application;

[0095] FIG. 13 is a three-dimensional schematic view showing the positioning assembly in a rearfacing sitting mode according to an embodiment of the present application;

[0096] FIG. 14 is a schematic structural view showing the positions of the first sliding member and the second sliding member of the first positioning component when the positioning assembly is in a rearfacing sitting mode according to an embodiment of the second aspect of the present application;

[0097] FIG. 15 is a schematic structural view showing a second positioning component of the positioning assembly according to another embodiment of the second aspect of the present application;

[0098] FIG. 16 is a schematic structural view showing the positions of the first sliding member and the second sliding member of the first positioning component when the first positioning component of a positioning assembly extends to the right side according to another embodiment of the second aspect of the present application;

[0099] FIG. 17 is a schematic structural view showing the positions of the first sliding member and the second sliding member of the first positioning component when the positioning assembly is in a rearfacing sitting mode according to another embodiment of the second aspect of the present application;

[0100] FIG. 18a is a schematic structural view showing a second positioning component of a positioning assembly according to an embodiment of a third aspect of the present application, with a first track being a circular track;

[0101] FIG. 18b is a schematic structural view showing a second positioning component of a positioning assembly according to another embodiment of the third aspect of the present application, with the first track being an elliptical track;

[0102] FIG. 19 shows a sectional schematic view of the positioning assembly according to some embodiments of the present application, and enlarged schematic views of part A and part B in the sectional view respectively;

[0103] FIG. 20 is a sectional schematic view showing the positioning assembly from another viewing angle according to some embodiments of the present application;

[0104] FIG. 21 is a schematic structural view showing a second positioning component according to yet another embodiment of the third aspect of the present application;

[0105] FIG. 22 is a schematic structural view showing a first positioning component according to yet another embodiment of the third aspect of the present application;

[0106] FIG. 23 is a schematic three-dimensional structure view showing a positioning assembly in a forward-facing sitting mode according to yet another embodiment of the third aspect of the present application;

[0107] FIG. 24 is a schematic structural view showing corresponding positions of the first sliding member and the second sliding member of the first positioning component, which are located on the second positioning component, when the first positioning component is in a state of extending to the front side but facing the left side according to yet another embodiment of the third aspect of the present application;

[0108] FIG. 25 is a schematic three-dimensional structure view showing the first positioning component facing the left side and moving to the front side according to yet another embodiment of the third aspect of the present application;

[0109] FIG. 26 is a schematic structural view showing the corresponding positions of the first sliding member and the second sliding member of the first positioning component, which are located on the second positioning component, when the positioning assembly is in a rear-facing sitting mode according to yet another embodiment of the third aspect of the present application;

[0110] FIG. 27 is a schematic three-dimensional structure view showing the positioning assembly in the rear-facing sitting mode according to yet another embodiment of the third aspect of the present application;

[0111] FIG. 28 is a schematic structural view showing corresponding positions of the first sliding member and the second sliding member of the first positioning component, which are located on the second positioning component, when the first positioning component is in a state of extending to the rear side but facing the right side according to yet another embodiment of the third aspect of the present application;

[0112] FIG. 29 is a schematic three-dimensional structure view showing the first positioning component facing the right side and moving to the rear side according to yet another embodiment of the third aspect of the present application;

[0113] FIG. 30 is a schematic structural view showing a second positioning component according to an embodiment of a fourth aspect of the present application;

[0114] FIG. 31 is a schematic structural view showing a first positioning component according to an embodiment of the fourth aspect of the present application;

[0115] FIG. 32 is a schematic three-dimensional structure view showing a positioning assembly in a forward-facing sitting mode according to an embodiment of the fourth aspect of the present application;

[0116] FIG. 33 is a schematic structural view showing corresponding positions of the first sliding member and the second sliding member of the first positioning component, which are located on thesecond positioning component, when the first positioning component extends to the left side according to an embodiment of the fourth aspect of the present application;

[0117] FIG. 34 is a schematic three-dimensional structure view showing the first positioning component in a state of extending to the left side according to an embodiment of the fourth aspect of the present application;

[0118] FIG. 35 is a schematic structural view showing corresponding positions of the first sliding member and the second sliding member of the first positioning component, which are located on the second positioning component, when the positioning assembly is in the rear-facing sitting mode according to an embodiment of the fourth aspect of the present application;

[0119] FIG. 36 is a schematic three-dimensional structure view showing the positioning assembly in the rear-facing sitting mode according to an embodiment of the fourth aspect of the present application;

[0120] FIG. 37 is a schematic structural view showing corresponding positions of the first sliding member and the second sliding member of the first positioning component, which are located on the second positioning component, when the first positioning component extends to the right side according to an embodiment of the fourth aspect of the present application;

[0121] FIG. 38 is a schematic three-dimensional structure view showing the first positioning component in a state of extending to the right side according to an embodiment of the fourth aspect of the present application;

[0122] FIG. 39 is a schematic structural view showing a second positioning component according to another embodiment of the fourth aspect of the present application;

[0123] FIG. 40 is a schematic structural view showing a first positioning component according to another embodiment of the fourth aspect of the present application;

[0124] FIG. 41 is a schematic three-dimensional structure view showing the positioning assembly in the forward-facing sitting mode according to another embodiment of the fourth aspect of the present application;

[0125] FIG. 42 is a schematic structural view showing corresponding positions of the first sliding member and the second sliding member of the first positioning component, which are located on the second positioning component, when the first positioning component draws back towards the right side according to another embodiment of the fourth aspect of the present application;

[0126] FIG. 43 is a schematic three-dimensional structure view showing the first positioning component drawing back towards the left side according to another embodiment of the fourth aspect of the present application;

[0127] FIG. 44 is a schematic structural view showing corresponding positions of the first sliding member and the second sliding member of the first positioning component, which are located on the second positioning component, when the positioning assembly is in a rear-facing sitting mode according to another embodiment of the fourth aspect of the present application;

[0128] FIG. 45 is a schematic three-dimensional structure view showing the positioning assembly in the rear-facing sitting mode according to another embodiment of the fourth aspect of the present application;

[0129] FIG. 46 is a schematic structural view showing positions of the first sliding member and the second sliding member of the first positioning component, which are located on the second positioning component, when the first positioning component draws back towards the left side according to yet another embodiment of the fourth aspect of the present application;

[0130] FIG. 47 is a schematic three-dimensional structure view showing the first positioning component drawing back towards the left side according to another embodiment of the fourth aspect of the present application;

[0131] FIG. 48 is a schematic structural view showing the second positioning component according to yet another embodiment of the fourth aspect of the present application;

[0132] FIG. 49 is a schematic structural view showing the first positioning component according to yet another embodiment of the fourth aspect of the present application;

[0133] FIG. 50 is a schematic three-dimensional structure view showing a positioning assembly in a forward-facing sitting mode according to yet another embodiment of the fourth aspect of the present application;

[0134] FIG. 51 is a schematic structural view showing corresponding positions of the first sliding member and the second sliding member of the first positioning component, which are located on the second positioning component, when the first positioning component is in a state of extending to the front side but facing the left side according to yet another embodiment of the fourth aspect of the present application;

[0135] FIG. 52 is a schematic three-dimensional structure view showing the first positioning component facing the left side and moving to the front side according to yet another embodiment of the fourth aspect of the present application;

[0136] FIG. 53 is a schematic structural view showing corresponding positions of the first sliding member and the second sliding member of the first positioning component, which are located on the second positioning component, when the positioning assembly is in the rear-facing sitting mode according to yet another embodiment of the fourth aspect of the present application;

[0137] FIG. 54 is a schematic three-dimensional structure view showing the positioning assembly in the rear-facing sitting mode according to yet another embodiment of the fourth aspect of the present application;

[0138] FIG. 55 is a schematic structural view showing corresponding positions of the first sliding member and the second sliding member of the first positioning component, which are located on the second positioning component, when the first positioning component is in a state of facing the right side and extending to the rear side according to yet another embodiment of the fourth aspect of the present application;

[0139] FIG. 56 is a schematic three-dimensional structure view showing the first positioning component facing the right side and moving to the rear side according to yet another embodiment of the fourth aspect of the present application;

[0140] FIG. 57 is a schematic structural view showing a first positioning component according to an embodiment of a fifth aspect of the present application;

[0141] FIG. 58 is a schematic structural view showing a second positioning component according to an embodiment of the fifth aspect of the present application;

[0142] FIG. 59 is a schematic top view showing the first positioning component according to an embodiment of the fifth aspect of the present application, with dotted lines showing a first track and a second track which are arranged on the lower surface of the first positioning component, and with all components on the upper surface of the first positioning component being omitted;

[0143] FIG. 60 is a schematic structural view showing the positioning assembly in the forward-facing sitting mode according to an embodiment of the fifth aspect of the present application, with the dottedlines showing the first track and the second track which are arranged on the lower surface of the first positioning component, and with all components on the upper surface of the first positioning component being omitted;

[0144] FIG. 61 is a schematic three-dimensional structure view showing the positioning assembly in the forward-facing sitting mode according to an embodiment of the fifth aspect of the present application;

[0145] FIG. 62 is a schematic structural view showing the first positioning component in a state of extending to the right side according to an embodiment of the fifth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0146] FIG. 63 is a schematic three-dimensional structure view showing the first positioning component in a state of extending to the right side according to an embodiment of the fifth aspect of the present application;

[0147] FIG. 64 is a schematic structural view showing the positioning assembly in the rear-facing sitting mode according to an embodiment of the fifth aspect of the present application, with dotted lines showing the first track and the second track which are arranged on the lower surface of the first positioning component, and with the components on the upper surface of the first positioning component being omitted;

[0148] FIG. 65 is a schematic three-dimensional structure view showing the positioning assembly in the rear-facing sitting mode according to an embodiment of the fifth aspect of the present application;

[0149] FIG. 66 is a schematic structural view showing the first positioning component facing the left side and drawing back towards the right side according to an embodiment of the fifth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0150] FIG. 67 is a schematic three-dimensional structure view showing the first positioning component facing the left side and drawing back towards the right side according to an embodiment of the fifth aspect of the present application;

[0151] FIG. 68 is a schematic structural view showing the second positioning component according to another embodiment of the fifth aspect of the present application;

[0152] FIG. 69 is a schematic structural view showing the positioning assembly in the forward-facing sitting mode according to another embodiment of the fifth aspect of the present application, with the dotted lines showing the first track and the second track which are arranged on the lower surface of the first positioning component, and with all components on the upper surface of the first positioning component being omitted;

[0153] FIG. 70 is a schematic structural view showing the first positioning component facing the right side and drawing back towards the left side according to another embodiment of the fifth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0154] FIG. 71 is a schematic structural view showing the positioning assembly in the rear-facing sitting mode according to another embodiment of the fifth aspect of the present application, with the dotted lines showing the first track and the second track which are arranged on the lower surface of the first positioning component, and with all components on the upper surface of the first positioning component being omitted;

[0155] FIG. 72 is a schematic structural view showing the first positioning component in a state of extending to the left side according to another embodiment of the fifth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0156] FIG. 73 is a schematic structural view showing the second positioning component according to yet another embodiment of the fifth aspect of the present application;

[0157] FIG. 74 is a schematic structural view showing the positioning assembly in the forward-facing sitting mode according to yet another embodiment of the fifth aspect of the present application, with the dotted lines showing the first track and the second track which are arranged on the lower surface of the first positioning component, and with all components on the upper surface of the first positioning component being omitted;

[0158] FIG. 75 is a schematic structural view showing the first positioning component in a state of extending to the rear side but facing the right side according to yet another embodiment of the fifth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0159] FIG. 76 is a schematic structural view showing a positioning assembly in a rear-facing sitting mode according to yet another embodiment of the fifth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0160] FIG. 77 is a schematic structural view showing the first positioning component in a state of extending to the rear side but facing the left side according to yet another embodiment of the fifth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0161] FIG. 78 is a schematic structural view showing a first positioning component according to an embodiment of a sixth aspect of the present application;

[0162] FIG. 79 is a schematic structural view showing a second positioning component according to an embodiment of the sixth aspect of the present application;

[0163] FIG. 80 is a schematic top view showing the first positioning component according to an embodiment of the sixth aspect of the present application, with the dotted lines showing the first track and the second track which are arranged on the lower surface of the first positioning component, and with all components on the upper surface of the first positioning component being omitted;

[0164] FIG. 81 is a schematic structural view showing the positioning assembly in the forward-facing sitting mode according to an embodiment of the sixth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0165] FIG. 82 is a schematic structural view showing the first positioning component facing the right side and drawing back towards the left side according to an embodiment of the sixth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0166] FIG. 83 is a schematic structural view showing the positioning assembly in the rear-facing sitting mode according to an embodiment of the sixth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0167] FIG. 84 is a schematic structural view showing the first positioning component in a state of extending to the left side according to an embodiment of the sixth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0168] FIG. 85 is a schematic structural view showing the second positioning component according to yet another embodiment of the sixth aspect of the present application;

[0169] FIG. 86 is a schematic structural view showing the positioning assembly in the forward-facing sitting mode according to yet another embodiment of the sixth aspect of the present application, with the dotted lines showing the first track and the second track which are arranged on the lower surface of the first positioning component, and with all components on the upper surface of the first positioning component being omitted;

[0170] FIG. 87 is a schematic structural view showing the first positioning component in a state of extending to the right side according to yet another embodiment of the sixth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0171] FIG. 88 is a schematic structural view showing the positioning assembly in the rear-facing sitting mode according to yet another embodiment of the sixth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0172] FIG. 89 is a schematic structural view showing the first positioning component facing the left side and drawing back towards the right side according to yet another embodiment of the sixth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0173] FIG. 90 is a schematic structural view showing a first positioning component according to yet another embodiment of the sixth aspect of the present application;

[0174] FIG. 91 is a schematic structural view showing a second positioning component according to yet another embodiment of the sixth aspect of the present application;

[0175] FIG. 92 is a schematic top view showing the first positioning component according to yet another embodiment of the sixth aspect of the present application, with the dotted lines showing a first track and a second track which are arranged on the lower surface of the first positioning component, and with all components on the upper surface of the first positioning component being omitted;

[0176] FIG. 93 is a schematic structural view showing the positioning assembly in the forward-facing sitting mode according to yet another embodiment of the sixth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0177] FIG. 94 is a schematic structural view showing a first positioning component in a state of facing the right side and extending to the rear side according to yet another embodiment of the sixth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0178] FIG. 95 is a schematic structural view showing the positioning assembly in the rear-facing sitting mode according to yet another embodiment of the sixth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0179] FIG. 96 is a schematic structural view showing the first positioning component in a state of extending to the rear side but facing the left side according to yet another embodiment of the sixth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0180] FIG. 97 is a schematic structural view showing a second positioning component according to yet another embodiment of the sixth aspect of the present application;

[0181] FIG. 98 is a schematic structural view showing a positioning assembly in the forward-facing sitting mode according to yet another embodiment of the sixth aspect of the present application, with all components on the upper surface of the first positioning component being omitted;

[0182] FIG. 99 is a schematic three-dimensional structure view showing a positioning assembly according to an embodiment of a seventh aspect of the present application;

[0183] FIG. 100 is a schematic three-dimensional structure view showing the positioning assembly with a child safety seat installed according to an embodiment of the seventh aspect of the present application;

[0184] FIG. 101 is a schematic side sectional view showing the positioning assembly in a locked state according to an embodiment of the seventh aspect of the present application;

[0185] FIG. 102 is a schematic side sectional view showing the positioning assembly in an unlocked state according to an embodiment of the seventh aspect of the present application;

[0186] FIG. 103 is a schematic structural view showing a second positioning component of the positioning assembly according to an embodiment of the seventh aspect of the present application;

[0187] FIG. 104 is a schematic view showing a connection between a first positioning component and the second positioning component of the positioning assembly according to an embodiment of the seventh aspect of the present application;

[0188] FIG. 105 is a side three-dimensional schematic view showing the unlocked positioning assembly according to an embodiment of the seventh aspect of the present application;

[0189] FIG. 106 is a schematic side sectional view showing the unlocked positioning assembly according to an embodiment of the seventh aspect of the present application;

[0190] FIG. 107 is a sectional schematic view showing the first positioning component of a positioning assembly in a state of extending to one side according to an embodiment of the seventh aspect of the present application;

[0191] FIG. 108 is a partial three-dimensional schematic view showing the first positioning component of the positioning assembly in a state of extending to one side according to an embodiment of the seventh aspect of the present application;

[0192] FIG. 109 is a schematic side view showing a child restraint system provided with a child safety seat according to an embodiment of the seventh aspect of the present application;

[0193] FIG. 110 is a schematic three-dimensional view showing the child restraint system provided with the child safety seat according to an embodiment of the seventh aspect of the present application;

[0194] FIG. 111 is a schematic three-dimensional view showing the child restraint system provided with the child safety seat according to an embodiment of the seventh aspect of the present application, with the child safety seat in a state of extending to the left side;

[0195] FIG. 112 is a schematic three-dimensional view showing the child restraint system provided with the child safety seat according to an embodiment of the seventh aspect of the present application, with the child safety seat in a state of extending to the right side;

[0196] FIG. 113 is a schematic three-dimensional view showing a child restraint system provided with a child basket according to an embodiment of the seventh aspect of the present application;

[0197] FIG. 114 is a schematic three-dimensional view showing the child restraint system provided with the child basket according to an embodiment of the seventh aspect of the present application, with the child basket in a state of extending to the left side;

[0198] FIG. 115 is a schematic three-dimensional view showing the child restraint system provided with the child basket according to an embodiment of the seventh aspect of the present application, with the child basket in a state of extending to the left side.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0199] One or more embodiments of the present invention are described herein in detail with reference to the accompanying drawings by way of illustration and not limitation.

[0200] Embodiments of this application provide a positioning assembly 100a. The positioning assembly 100a includes a first positioning component 1 and a second positioning component 2. A first track is arranged on one of the first positioning component 1 and the second positioning component 2. A first sliding member is arranged on the other of the first positioning component 1 and the second positioning component 2. The first sliding member is slidable along the first track. A second track is arranged on one of the first positioning component 1 and the second positioning component 2, and a second sliding member is arranged on the other of the first positioning component 1 and the second positioning component 2, and the second sliding member is slidable along the second track. The first positioning component 1 is rotatable and movable relative to the second positioning component 2 along the first track and the second track. The first track is an arc track or a circular track, and the second track is a straight track. In embodiments of the present application, the positioning assembly 100a may be, for example, a base. The first positioning component 1 may be a turntable of the base, and the second positioning component 2 may be a base seat of the base, and the turntable may rotate and move relative to the base seat. As shown in FIGS. 1-3, 5, 7a-7b, 11, 15 and 18a-18b, the positioning assembly 100a includes the first positioning component 1 and the second positioning component 2. The first track (21E1 or 21E2 shown in FIG. 3a, 21E1' or 21E2' shown in FIG. 3b, 21E3 or 21E4 shown in FIG. 10, 21E5 shown in FIG. 18a, 21E6 shown in FIG. 18b, 21E8 shown in FIG. 21, or 21E7 shown in FIG. 30) is arranged on one of the first positioning component 1 and the second positioning component 2, for example, on the second positioning component 2. The first sliding member 121a is arranged on the other of the first positioning component 1 and the second positioning component 2, for example, on the first positioning component 1 as shown in FIG. 2. The first sliding member 121a is slidable along the first track (21E1 or 21E2 shown in FIG. 3a, 21E1' or 21E2' shown in FIG. 3b, 21E3 or 21E4 shown in FIG. 10, 21E5 shown in FIG. 18a, 21E6 shown in FIG. 18b, 21E8 shown in FIG. 21, or 21E7 shown in FIG. 30). The second track (22E1 or 22E2 shown in FIG. 3a, 22E1' or 22E2' shown in FIG. 3b, 22E3 or 22E4 shown in FIG. 10, 22E5 shown in FIG. 18a, 22E6 shown in FIG. 18b, 22E8 shown in FIG. 21, or 22E7 shown in FIG. 30) is arranged on one of the first positioning component 1 and the second positioning component 2, for example, on the second positioning component 2. The second sliding member 121b is arranged on the other of the first positioning component 1 and the second positioning component 2, for example, on the first positioning component 1 as shown in FIG. 2. The second sliding member 121b is slidable along the second track (22E1 or 22E2 shown in FIG. 3a, 22E1' or 22E2' shown in FIG. 3b, 22E3 or 22E4 shown in FIG. 10, 22E5 shown in FIG. 18a, 22E6 shown in FIG. 18b, 22E8 shown in FIG. 21, or 22E7 shown in FIG. 30). The first positioning component 1 is rotatable and movable relative to the second positioning component 2 along the first track (21E1 or 21E2 shown in FIG. 3a, 21E1’ or 21E2’ shown in FIG. 3b, 21E3 or 21E4 shown in FIG. 10, 21E5 shown in FIG. 18a, 21E6 shown in FIG. 18b, 21E8 shown in FIG. 21, or 21E7 shown in FIG. 30) and the second track (22E1 or 22E2 shown in FIG. 3a, 22E1' or 22E2' shown in FIG. 3b, 22E3 or 22E4 shown in FIG. 10, 22E5 shown in FIG. 18a, 22E6 shown in FIG. 18b, 22E8 shown in FIG. 21, or 22E7 shown in FIG. 30).

[0201] The positioning assembly 100a of the present application includes the first positioning component 1 and the second positioning component 2. The first track (21E1 or 21E2 shown in FIG. 3a, 21El' or21E2' shown in FIG. 3b, 21 E3 or 21E4 shown in FIG. 10, 21E5 shown in FIG. 18a, 21E6 shownin FIG. 18b, 21E8 shown in FIG. 21, or 21E7 shown in FIG. 30) is arranged on one of the first positioning component 1 and the second positioning component 2, and the first sliding member 121a is arranged on the other of the first positioning component 1 and the second positioning component 2. The first sliding member 121a is slidable along the first track (21E1 or 21E2 shown in FIG. 3a, 21E1' or 21E2' shown in FIG. 3b, 21E3 or 21E4 shown in FIG. 10, 21E5 shown in FIG. 18a, 21E6 shown in FIG. 18b, 21E8 shown in FIG. 21, or 21E7 shown in FIG. 30). The second track (22E1 or 22E2 shown in FIG. 3a, 22E1' or 22E2' shown in FIG. 3b, 22E3 or 22E4 shown in FIG. 10, 22E5 shown in FIG. 18a, 22E6 shown in FIG. 18b, 22E8 shown in FIG. 21, or 22E7 shown in FIG. 30) is arranged on one of the first positioning component 1 and the second positioning component 2, and the second sliding member 121b is arranged on the other of the first positioning component 1 and the second positioning component 2, and the second sliding member 121b is configured to be slidable along the second track (22E1 or 22E2 shown in FIG. 3a, 22E1' or 22E2' shown in FIG. 3b, 22E3 or 22E4 shown in FIG. 10, 22E5 shown in FIG. 18a, 22E6 shown in FIG. 18b, 22E8 shown in FIG. 21, or 22E7 shown in FIG. 30), so that the first positioning component 1 is rotatable and movable relative to the second positioning component 2 along the first track and the second track.

[0202] In an embodiment, the positioning assembly 100a further includes a third positioning component 3. The second positioning component 2 is fixedly arranged on the third positioning component 3 and is located between the first positioning component 1 and the third positioning component 3. In an embodiment, the third positioning component 3 is configured to be stationary. In an actual use of the present application, as shown in FIGS. 1 and 31, the second positioning component 2 is fixedly arranged on the third positioning component 3, and the positioning assembly 100a is mounted on a vehicle seat through the third positioning component 3, and the positioning assembly 100a is firmly attached to the vehicle floor through the support leg 300. A child safety seat 200 (shown in FIG. 110) or a child basket 400 (shown in FIG. 113) is detachably mounted on the first positioning component 1. By rotating the child safety seat 200 or the child basket 400, the child safety seat 200 or the child basket 400 is rotated and moves toward a lateral position along with the first positioning component 1 of the positioning assembly 100a, and the child safety seat or the child basket is in a state of extending to one side, so that the child safety seat or the child basket is closer to the vehicle door, thereby making it convenient to carry a child in or out, and improving the usage and operation experience and the satisfaction for the child safety seat or the child basket. The child safety seat described hereinafter, alternatively, may be the child basket.

[0203] In some embodiments, the second positioning component 2 may also be configured to be rotatable relative to the third positioning component 3. The positioning assembly 100a is installed on the vehicle seat through the third positioning component 3, and the child safety seat 200 is detachably installed on the first positioning component 1. By rotating the child safety seat 200, the child safety seat 200 rotates together with the first positioning component 1 and the second positioning component 2 relative to the third positioning component 3, so that the child safety seat can be rotated to be in a state of facing one side of the vehicle seat. In some embodiments, the positioning assembly 100a may not be provided with the third positioning component 3, and the positioning assembly 100a is directly installed on the vehicle seat through the second positioning component 2. In some embodiments, the second positioning component 2 and the third positioning component 3 may also be integrally formed, and the positioning assembly 100a is installed on the vehicle seat through the second positioning component 2 and the third positioning component 3 that are integrally formed. In the present application, as shown inFIG. 2 and FIG. 4, when the second positioning component 2 is fixed on the vehicle seat, the front of the second positioning component 2 is defined as the direction in which the vehicle is traveling forward. The rear of the vehicle, which is opposite to the direction in which the vehicle is traveling forward, is defined as the rear of the second positioning component 2. The direction in which the second positioning component 2 closes to a left door of the vehicle is defined as the left of the second positioning component 2, and the direction in which the second positioning component 2 closes to a right door of the vehicle is defined as the right. A front portion of the first positioning component 1 corresponds to a position where feet of a child are located when the child is seated. When the front portion of the first positioning component 1 is located in front of the second positioning component 2, the positioning assembly 100a is in a forward-facing sitting mode, that is the child safety seat or the child basket is in a forward-facing sitting mode. As shown in FIG. 2 and FIG. 13, when the front portion of the first positioning component 1 is located behind the second positioning component 2, the positioning assembly 100a is in a rear-facing sitting mode, that is, the child safety seat or the child basket is in a rear-facing sitting mode. The positioning assembly of the present application is in a state of extending to one side, which means that, the front portion of the first positioning component of the positioning assembly is facing this side, and the center of the first positioning component is displaced toward this side relative to the center of the second positioning component, so that the front portion of the first positioning component is closer to a vehicle door at this side. The positioning assembly of the present application is in a state of drawing back towards one side, which means that, the rear portion of the first positioning component of the positioning assembly faces this side, the front portion of the first positioning component faces the other side opposite to this side, and the center of the first positioning component is displaced toward this side relative to the center of the second positioning component, so that the front portion of the first positioning component is away from a vehicle door at the other side. In the present application, the front portion, the rear portion, the left portion and the right portion of the first positioning component 1 refer to the parts of the first positioning component 1 corresponding to the front, rear, left and right directions of the child when the child is seated, namely the parts of the first positioning component 1 corresponding to the front, rear, left and right directions of the second positioning component 2 or the vehicle seat or the vehicle respectively when the positioning assembly 100a is in the forward-facing sitting mode. In all the drawings of the present application, the front, rear, left, right, up and down marked with arrows refer to the front, rear, left, right, up and down spatial directions of the second positioning component or the vehicle seat or the vehicle respectively, and Fl, F2, F3 and F4 marked with arrows refer to directions corresponding to the front, rear, right and left portions of the first positioning component 1, respectively.

[0204] A first aspect of the present application provides a positioning assembly 100a. In an embodiment of the first aspect of the present application, in order to enable the first positioning component 1 to slide outwards laterally relative to the second positioning component 2, a first sliding member 121a and a second sliding member 121b are arranged on the first positioning component 1, and a first track and a second track are arranged on the second positioning component 2. The first track is an arc track arranged along a front-rear direction of the second positioning component 2. The second track is a straight track arranged along a left-right direction of the second positioning component 2.

[0205] In an embodiment of the first aspect, referring to FIG. 2, the first sliding member 121a and the second sliding member 121b are arranged on the first positioning component 1. Optionally, the second sliding member 121b is arranged at a center point 0’ of the first positioning component 1, and the first sliding member 121a is arranged at the rear portion of the first positioning component 1. Optionally, thecenter point 0’ of the first positioning component 1 is a geometrical center of the first positioning component 1. Correspondingly, referring to FIG. 3, the second positioning component 2 at least includes a first track 21E1 and a second track 22E1. Further, the first positioning component 1 includes an upper seat body 11 and a lower seat body 12. The upper seat body 11 is fixedly arranged on the upper surface of the lower seat body 12, and the first sliding member 121a and the second sliding member 121b are arranged on the lower surface of the lower seat body 12. The first sliding member 121a is slidably arranged in the first track 2 IE 1, so that the first sliding member 121a can slide along the first track 21E1. The second sliding member 121b is slidably arranged in the second track 22E1, so that the second sliding member 121b can slide along the second track 22E1. In an embodiment, the first sliding member 121a and the second sliding member 121b are pillars. In an embodiment, the first track 21E1 and the second track 22E1 are both grooves, but the present disclosure is not limited thereto. The shape and the structure of the first sliding member 121a and the second sliding member 121b are not limited in these embodiment, as long as the first sliding member 121a can slide along the first track 21E1 and the second sliding member 121b can slide along the second track 22E1, after the first positioning component 1 is installed on the second positioning component 2, thereby realizing the rotation and movement of the first positioning component 1 relative to the second positioning component 2.

[0206] In some embodiments of the first aspect, as shown in FIGS. 3a-3b and 7a-7b, the first track (21E1, 21E1', 21E2, or 21E2') of the second positioning component 2 is an arc track, and the first track is arranged between the left-right center line X of the second positioning component 2 and a point A4, which is located in the front-back center line Y and in the front portion of the second positioning component 2. Alternatively, the first track is arranged between the left-right center line X of the second positioning component 2 and a point Al, which is located in the front-back center line Y and in the rear portion of the second positioning component 2. The left-right center line X refers to a center line extending in the left-right direction, and the front-back center line Y refers to a center line Y extending in the front-rear direction. The first track is located on one of the left and the right portions of the second positioning component 2. Taking the front-back center line Y of the second positioning component 2 as a reference, a portion on the left of the second positioning component 2 is the left portion, and a portion on the right is the right portion thereof. The second track (22E1, 22E1', 22E2, or 22E2') is a straight track, extending along the left-right center line X from the center point O (i.e., the point Bl) of the second positioning component 2 to the other of the left portion and the right portion. Where, the point Bl is a point on the second track, i.e., a point described based on the second track, and the point Bl coincides with the center point O of the second positioning component 2. In an embodiment, further, the distance from the center point O (i.e., the point Bl) of the second positioning component 2 to the intersection point Al or the intersection point A4, where the first track and the front-back center line Y intersect, is greater than the distance from the center point O (i.e., a point Bl) of the second positioning component 2 to the intersection point A2 or the intersection point A3, where the first track and the leftright center line X intersect. The intersection point Al or A4 where the first track and the front-back center line intersect is the point located in the front-back center line Y and in the front portion of the second positioning component 2, or the point located in the front-back center line Y and in the rear portion of the second positioning component 2. Accordingly, in an embodiment of the application, when the positioning assembly 100a is in the forward-facing sitting mode or in the rear-facing sitting mode, the first sliding member 121a is arranged at a first position on the lower surface of the first positioning component 1, and the first position corresponds to the intersection point (Al or A4), where the first track(21E1, 21E1 21E2, or 21E2') and the front-back center line Y intersect, and the second sliding member 121b is arranged at a second position on the lower surface of the first positioning component 1, and the second position corresponds to the center point O of the second positioning component 2. Specifically, when the positioning assembly 100a is in the forward-facing sitting mode or in the rear-facing sitting mode, the first sliding member 121a is arranged on the lower surface of the lower seat body 12 and located at a position corresponding to the intersection point A4 or the intersection point Al, where the first track and the front-back center line Y intersect, and the second sliding member 121b is arranged on the lower surface of the lower seat body 12 and located at a position corresponding to the center point O (i.e., the point B 1) of the second positioning component 2. Optionally, the center point O of the second positioning component 2 is a geometrical center of the second positioning component 2.

[0207] In an embodiment, as shown in FIG. 3a, the first track 21E1 is an arc track. The first track 21E1 is arranged between the left-right center line X of the second positioning component 2 and the point Al, which is located in the front-back center line Y and in the rear portion of the second positioning component 2, and the first track 21E1 is located on the right portion of the second positioning component 2. That is, the first track 21E1 is part of an arc track shown in FIG. 3a, which is located at the right portion of the second positioning component 2. The second track 22E1 is a straight track, which is configured to extend along the left-right center line X from the center point O (i.e., the point Bl) of the second positioning component 2 to the left portion, that is, the second track 22E1 is part of a straight track shown in FIG. 3a, which is located at the left portion of the second positioning component 2. Correspondingly, when the positioning assembly 100a is in the forward-facing sitting mode or the rearfacing sitting mode, the first sliding member 121a is arranged at a first position on the lower surface of the lower seat body 12, and the first position on the lower surface corresponds to the first track 21E1, and specifically, the first position corresponds to the point Al in the first track 21E1. The second sliding member 121b is arranged at a position on the lower surface of the lower seat body 12 corresponding to the position of the center point O of the second positioning component 2. The embodiment of the present application is illustrated by taking the positioning assembly shown in FIG. 4 in the forward-facing sitting mode as an example. Referring to FIG. 3a and FIG. 4, when the positioning assembly 100a is in the forward-facing sitting mode, the first sliding member 121a on the first positioning component 1 is located at the first position on the first positioning component 1, which corresponds to the point Al, and the second sliding member 121b is located at the second position on the first positioning component 1, which corresponds to the point Bl. When the child safety seat is rotated to drive the first positioning component 1 to start rotating, the first sliding member 121a on the first positioning component 1 starts sliding from point Al and along the first track 21E1 in a direction indicated by an arrow. At the same time, the second sliding member 121b is driven to slide from point Bl and along the second track 22E1 in a direction indicated by an arrow, that is, to slide toward the left side. In this process, the first positioning component 1 gradually moves toward the left side while rotating. As shown in FIGS. 5 and 6, when the first sliding member 121a slides to the point A2 in the first track 21E1, and the second sliding member 121b slides to the point B2 in the second track 22E1, the first positioning component 1 comes into a state of extending to the left side, so that the child safety seat is in a state of extending to the left side. In an embodiment of the present application, corresponding to the positioning assembly 100a being in the rear-facing sitting mode, the first sliding member 121a on the first positioning component 1 is located at the first position on the first positioning component 1, which corresponds to the point Al, and that the second sliding member 121b is located at the second position on the firstpositioning component 1, which corresponds to the point Bl, the working process of the positioning assembly 100a of this embodiment is similar to the above process, which will not be described repeatedly herein, but differs from the above process in that the first positioning component 1 draws back towards the left side while rotating.

[0208] In another embodiment, as shown in FIG. 3b, the first track 21E1' may also be arranged between the left-right center line X of the second positioning component 2 and a point A4, which is located in the front-back center line Y and in the front portion of the second positioning component 2, and the first track 21E1' is located on the right portion of the second positioning component 2. That is, the first track 21E1' is part of the arc track shown in FIG. 3b, which is located on the right portion of the second positioning component 2. The second track 22E1' is a straight track, which is configured to extend along the left-right center line X from the center point O (i.e., the point Bl) of the second positioning component 2 to the left portion, that is, the second track 22E1' is part of the straight track shown in FIG. 3b, which is located on the left portion of the second positioning component 2. Correspondingly, when the positioning assembly 100a is in the forward-facing sitting mode or the rear-facing sitting mode, the first sliding member 121a is arranged at a first position on the lower surface of the lower seat body 12, and the first position on the lower surface corresponds to the first track 21E1', and specifically, the first position corresponds to the point A4 in the first track 21E1'. The second sliding member 121b is arranged at the second position on the lower surface of the lower seat body 12 corresponding to the center point O (i.e., the point Bl) of the second positioning component 2. In an embodiment of the present application, corresponding to the positioning assembly 100a being in the rear-facing sitting mode, the first sliding member 121a is disposed at the first position on the lower surface of the lower seat body 12 corresponding to the A4 point in the first track 21E1', and the second sliding member 121b is disposed at the second position on the lower surface of the lower seat body 12 corresponding to the center point O (i.e., the point Bl) of the second positioning component 2. Similarly, the first positioning component 1 may be rotated and moves toward the left side at the same time, so that the child safety seat is in a state of extending to the left side, and the specific process is similar to the above process, which will not be described repeatedly herein. In an embodiment, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 121a is arranged at the first position on the lower surface of the lower seat body 12 corresponding to the point A4 in the first track 21E1', and the second sliding member 121b is arranged at the second position on the lower surface of the lower seat body 12 corresponding to the center point O (i.e., the point Bl) of the second positioning component 2. The working process of the positioning assembly 100a of this embodiment is similar to the above process, which will not be described repeatedly herein, but differs from the above process in that the first positioning component 1 draws back towards the left side while rotating.

[0209] In yet another embodiment of the first aspect, as shown in FIG. 7a, the first track 21E2 is an arc track. The first track 21E2 is arranged between the left-right center line X of the second positioning component 2 and the point Al, which is located in the front-back center line Y and in the rear portion of the second positioning component 2, and the first track 21E2 is located on the left portion of the second positioning component 2. That is, the first track 21E2 is part of an arc track shown in FIG. 7a, which is located at the left portion of the second positioning component 2. The second track 22E2 is a straight track, which is configured to extend along the left-right center line X from the center point O (i.e., the point Bl) of the second positioning component 2 to the right portion, that is, the second track 22E2 is part of a straight track shown in FIG. 7a, which is located at the right portion of the second positioningcomponent 2. Correspondingly, when the positioning assembly 100a is in the forward-facing sitting mode or the rear-facing sitting mode, the first sliding member 121a is arranged at the first position on the lower surface of the lower seat body 12, and the first position on the lower surface corresponds to the first track 21E2, and specifically, the first position corresponds to the point Al in the first track 21E2. The second sliding member 121b is arranged at the second position on the lower surface of the lower seat body 12, which corresponds to the center point O (i.e., the point Bl) of the second positioning component 2. The embodiment of the present application is illustrated by taking the positioning assembly shown in FIG. 4 in the forward-facing sitting mode as an example. Referring to FIG. 4 and FIG. 7a, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 121a on the first positioning component 1 is arranged at the first position on the lower surface of the lower seat body 12, which corresponds to the point Al shown in the figure, and the second sliding member 121b is located at the second position on the lower surface of the lower seat body 12, which corresponds to the point Bl. When the child safety seat is rotated to drive the first positioning component 1 to start rotating, the first sliding member 121a on the first positioning component 1 starts sliding from point Al and along the first track 21E2 in a direction indicated by an arrow. At the same time, the second sliding member 121b is driven to slide from point Bl and along the second track 22E2 in a direction indicated by an arrow, that is, to slide toward the right side. In this process, the first positioning component 1 gradually moves toward the right side while rotating. As shown in FIGS. 8 and 9, when the first sliding member 121a slides to the point A3 in the first track 21E2, and the second sliding member 121b slides to the point B3 in the second track 22E2, the first positioning component 1 comes into a state of extending to the right side, so that the child safety seat is in a state of extending to the right side. In an embodiment of the present application, corresponding to the positioning assembly 100a being in the rear-facing sitting mode, the first sliding member 121a on the first positioning component 1 is located at the first position on the lower surface of the lower seat body 12, which corresponds to the point Al, and that the second sliding member 121b is located at the second position on the lower surface of the lower seat body 12, which corresponds to the point Bl, the working process of the positioning assembly 100a of this embodiment is similar to the above process, which will not be described repeatedly herein, but differs from the above process in that the first positioning component 1 draws back towards the right side while rotating.

[0210] In yet another embodiment of the first aspect, as shown in FIG. 7b, the first track 21E2' may also be arranged between the left-right center line X of the second positioning component 2 and a point A4, which is located in the front-back center line Y and in the front portion of the second positioning component 2, and the first track 21E2' is located on the left portion of the second positioning component 2. That is, the first track 21E2' is part of the arc track shown in FIG. 7b, which is located on the left portion of the second positioning component 2. The second track 22E2' is a straight track, which is configured to extend along the left-right center line X from the center point O (i.e., the point Bl) of the second positioning component 2 to the right portion, that is, the second track 22E2' is part of the straight track shown in FIG. 7b, which is located on the right portion. Correspondingly, when the positioning assembly 100a is in the forward-facing sitting mode or the rear-facing sitting mode, the first sliding member 121a is arranged at a first position on the lower surface of the lower seat body 12, and the first position on the lower surface corresponds to the first track 21E2', and specifically, the first position corresponds to the point A4, which is located in the front-back center line Y and in the front portion of the second positioning component 2. The second sliding member 121b is arranged at the second positionon the lower surface of the lower seat body 12 corresponding to the center point O (i.e., the point Bl) of the second positioning component 2. In an embodiment of the present application, corresponding to the positioning assembly 100a being in the rear-facing sitting mode, the first sliding member 121a is disposed at the first position on the lower surface of the lower seat body 12 corresponding to the A4 point, and the second sliding member 121b is disposed at the second position on the lower surface of the lower seat body 12 corresponding to the center point O (i.e., the point Bl) of the second positioning component 2. For this embodiment, similarly, the first positioning component 1 may be rotated and move towards the right side at the same time, so that the child safety seat is in a state of extending to the right side, and the specific process is similar to the above process, which will not be described repeatedly herein. In an embodiment, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 121a is arranged at the first position on the lower surface of the lower seat body 12 corresponding to the point A4 in the first track 21E2', and the second sliding member 121b is arranged at the second position on the lower surface of the lower seat body 12 corresponding to the center point O (i.e., the point Bl) of the second positioning component 2. The working process of the positioning assembly 100a of this embodiment is similar to the above process, which will not be described repeatedly herein, but differs from the above process in that the first positioning component 1 draws back towards the right side while rotating.

[0211] A second aspect of the present application provides a positioning assembly 100a. In order to allow the first positioning component 1 to slide outwards laterally relative to the second positioning component 2, the first slide member 121a and the second slide member 121b are arranged on the first positioning component 1, and the first track and the second track are arranged on the second positioning component 2. The first track is an arc track arranged along the front-rear direction of the second positioning component 2, and the second track is a straight track arranged along the left-right direction of the second positioning component 2. The embodiments of the second aspect will be described in detail hereinafter.

[0212] In some embodiments of the second aspect, as shown in FIG. 10, a first track (21E3 or 21E4) is an arc track, arranged between the point A4 located in the front portion and the point Al located in the rear portion which are located in the front-back center line Y of the second positioning component 2, and located on one of the left and right portions of the second positioning component 2. A second track (22E3 or 22E4) is a straight track, extending along the left-right center line X from the center point O (i.e., the point Bl) of the second positioning component 2 to the other of the left and right portions. In an embodiment, the distance between the intersection points Al and A4 where the first track and the front-back center line Y intersect is greater than twice of the distance between the center point O (i.e., the point Bl) of the second positioning component 2 and the intersection point where the first track and the left-right center line X intersect to. Correspondingly, in an embodiment, when the positioning assembly 100a is in the forward-facing sitting mode or the rear-facing sitting mode, the first sliding member 121a is arranged at a first position on the lower surface of the lower seat body 12, which corresponds to any one of the point Al and the point A4 in the first track 21E3 or 21E4, and the second sliding member 121b is arranged at a second position on the lower surface of the lower seat body 12, which corresponds to the center point O (i.e., the point Bl) of the second positioning component 2. By rotating the child safety seat, the child safety seat is rotated and moves toward a lateral position together with the first positioning component 1 of the positioning assembly 100a, and in addition, a switching between the forward-facing sitting mode and the rear-facing sitting mode of the positioning assemblycan be realized. The child safety seat can be rotated to come into a state of extending to one side, so that the child safety seat may be closer to the vehicle door, thereby making it convenient to carry a child in or out. The switching between the forward-facing sitting mode and the rear-facing sitting mode of the child safety seat can also be done freely, thereby improving the safety of the child safety seat, and improving the usage and operation experience and the satisfaction for the child safety seat. In addition, the embodiment of the present application may also allow the child safety seat to rotate to a state of drawing back towards one side, which will be specifically described as follows.

[0213] In an embodiment of the second aspect, as shown in FIG. 11, the first track 21E3 is arranged between the point A4 located in the front portion and the point Al located in the rear portion which are located in the front-back center line Y of the second positioning component 2, and is located on the right portion of the second positioning component 2. That is, the first track 21E3 is an arc track in FIG. 11 located on the right portion of the second positioning component 2. The second track 22E3 is a straight track configured to extend along the left-right center line X from the center point O (i.e., the point Bl) of the second positioning component 2 to the left portion, that is, the second track 22E3 is part of the straight track shown in FIG. 11, which is located on the left portion of the second positioning component 2. Correspondingly, when the positioning assembly 100a is in the forward-facing sitting mode or the rear-facing sitting mode, the first sliding member 121a is arranged at a first position on the lower surface of the lower seat body 12, which corresponds to any one of the point A4 and the point Al in the first track 21E3. That is, it is only required that the first position, where the first sliding member 121a on the lower seat body 12 is arranged, can be aligned with any one of the point Al and the point A4 in the first track 21E3 when the first positioning component 1 is in the forward-facing sitting mode or the rearfacing sitting mode. The second sliding member 121b is arranged at the second position on the lower surface of the lower seat body 12, which corresponds to the center point O (i.e., the point Bl) of the second positioning component 2. In this arrangement, by rotating the child safety seat, the child safety seat is rotated and moves toward the left side together with the first positioning component 1 of the positioning assembly 100a, and the child safety seat can be in a state of extending to the left side or can be in a state of drawing back towards the left side. In addition, the switching between the forward-facing sitting mode and the rear-facing sitting mode of the positioning assembly can also be realized.

[0214] An embodiment of this application is illustrated by taking the positioning assembly 100a being in the forward-facing sitting mode as shown in FIG. 4, and the first sliding member 121a on the first positioning component 1 is located at the position of the point Al in FIG. 11 as an example. As shown in FIGS. 4 and 11, the first track 21E3 is arranged on the right portion of the second positioning component 2, and the second track 22E3 is a straight track extending along the left-right center line X from the center point O (i.e., the point Bl) of the second positioning component 2 to the left portion. Corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 121a on the first positioning component 1 is located at the point Al in FIG. 11, and the second sliding member 121b is located at the point Bl in FIG. 11. The first sliding member 121a on the first positioning component 1 starts sliding from the point Al and slides along the first track 21E3 in the direction indicated by an arrow, and at the same time, the second sliding member 121b starts sliding from the point Bl and slides along the second track 22E3 in the direction indicated by an arrow, i.e., slides toward the left side. In this process, the first positioning component 1 gradually moves toward the left side while rotating. As shown in FIG. 12, when the first sliding member 121a slides to the point A2 in the first track 21E3, the second sliding member 121b slides to the point B2 in the second track 22E3,and the first positioning component 1 comes into a state of extending to the left side, so that the child safety seat is in a state of extending to the left side (as shown in FIG. 6). Continuing to refer to FIG. 12, the first positioning component 1 is rotated continuously, so that the first sliding member 121a slides along the first track 21E3 in the direction indicated by an arrow at the point A2, that is, slides from the point A2 to the point A4. At the same time, the second sliding member 121b slides along the second track 22E3 in the direction indicated by an arrow at the point B2, that is, slides from the point B2 to the center point O (i.e., point Bl). In this process, the first positioning component 1 gradually returns to the center point O (i.e., point Bl) while rotating. As shown in FIGS. 13 and 14, when the first sliding member 121a slides to the point A4 in the first track 21E3, and the second sliding member 121b slides to the point Bl of the second track 22E3, the first positioning component 1 returns to the center point O. At this time, the positioning assembly 100a is in the rear-facing sitting mode. Through the positioning assembly 100a of the embodiment of the present application, the first positioning component 1 can be pulled out to the left side, and the switching from the forward-facing sitting mode to the rear-facing sitting mode may also be realized. When the first positioning component 1 is in the rear-facing sitting mode as shown in FIG. 13, the first positioning component 1 may be rotated in the opposite direction, which is opposite to the above-mentioned sliding process. Through the positioning assembly 100a of the embodiment of the present application, the first positioning component 1 can be pulled out to the left side, and the rear-facing sitting mode can also be switched to the forward-facing sitting mode. Thus, this embodiment of the present application can realize pulling out of the first positioning component 1 to the left side and achieve the switching between the forward-facing sitting mode and the rear-facing sitting mode of the positioning assembly. In an embodiment of the present application, corresponding to the positioning assembly 100a is in the rear-facing sitting mode, the first sliding member 121a on the first positioning component 1 is located at a position on the first positioning component 1, which corresponds to the point Al, and the second sliding member 121b on the first positioning component 1 is located at a position corresponding to the point Bl. The working process of the positioning assembly 100a of this embodiment is similar to the above process, which will not be described repeatedly herein. The working process of this embodiment differs from the above process in that: first, the first positioning component 1 rotates in the direction indicated by the arrow at the point Al and draws back towards the left side at the same time; then the child safety seat is rotated continuously, and the positioning assembly 100a returns to the center point, and at this time, the positioning assembly 100a is in the forward-facing sitting mode; further the first positioning component 1 can be rotated in the reverse direction, which is opposite to the above sliding process, so that the first positioning component 1 can draw back towards the left side, and that the positioning assembly 100a can be further switched from the forward-facing sitting mode to the original rear-facing sitting mode.

[0215] In another embodiment of the second aspect, as shown in FIG. 15, the first track 21E4 is arranged between the point A4 located in the front portion and the point Al located in the rear portion which are located in the front-back center line Y of the second positioning component 2, and is located on the left portion of the second positioning component 2. That is, the first track 21E4 is an arc track in FIG. 15 located on the left portion of the second positioning component 2. The second track 22E4 is a straight track configured to extend along the left-right center line X from the center point O (i.e., the point Bl) of the second positioning component 2 to the right portion, that is, the second track 22E4 is part of the straight track shown in FIG. 15, which is located on the right portion of the second positioning component 2. Correspondingly, when the positioning assembly 100a is in the forward-facing sittingmode or the rear-facing sitting mode, the first sliding member 121a is arranged at a first position on the lower surface of the lower seat body 12, which corresponds to any one of the point A4 and the point Al in the first track 21E4. The first track 21E4 includes the point A4 and the point Al, and it is only required that the first position, where the first sliding member 121a on the lower seat body 12 is arranged, can be aligned with any one of the point Al and the point A4 in the first track 21E3 when the first positioning component 1 is in the forward-facing sitting mode or the rear-facing sitting mode. The second sliding member 121b is arranged at the second position on the lower surface of the lower seat body 12, which corresponds to the center point O (i.e., the point Bl) of the second positioning component 2. In this arrangement, by rotating the child safety seat, the child safety seat is rotated and moves toward the right side together with the first positioning component 1 of the positioning assembly 100a, and the child safety seat can be in a state of extending to the right side or can be in a state of drawing back towards the right side. In addition, the switching between the forward-facing sitting mode and the rear-facing sitting mode of the positioning assembly can also be realized.

[0216] An embodiment of this application is illustrated by taking the positioning assembly 100a being in the forward-facing sitting mode as shown in FIG. 4, and the first sliding member 121a on the first positioning component 1 is located at the position of the point Al in FIG. 15 as an example. As shown in FIGS. 4 and 15, the first track 21E4 is arranged on the left portion of the second positioning component 2, and the second track 22E4 is a straight track extending along the left-right center line X from the center point O (i.e., the point Bl) of the second positioning component 2 to the right portion. The first sliding member 121a on the first positioning component 1 is located at the point Al in FIG. 15, and the second sliding member 121b is located at the point Bl in FIG. 15. The first sliding member 121a on the first positioning component 1 starts sliding from the point Al and slides along the first track 21E4 in the direction indicated by an arrow, and at the same time, the second sliding member 121b starts sliding from the point Bl and slides along the second track 22E4 in the direction indicated by an arrow, i.e., slides toward the right side. In this process, the first positioning component 1 gradually moves toward the right side while rotating. As shown in FIG. 16, when the first sliding member 121a slides to the point A3 in the first track 21E4, the second sliding member 121b slides to the point B3 in the second track 22E4, and the first positioning component 1 comes into a state of extending to the right side, so that the child safety seat is in a state of extending to the right side. Continuing to refer to FIG. 16, the first positioning component 1 is rotated continuously, so that the first sliding member 121a slides along the first track 21E4 in the direction indicated by an arrow at the point A3, that is, slides from the point A3 to the point A4. At the same time, the second sliding member 121b slides along the second track 22E4 in the direction indicated by an arrow at the point B3, that is, slides from the point B3 to the center point O (i.e., point B 1). In this process, the first positioning component 1 gradually returns to the center point O (i.e., point Bl) while rotating. As shown in FIGS. 13 and 17, when the first sliding member 121a slides to the point A4 in the first track 21E4, and the second sliding member 121b slides to the point Bl of the second track 22E4, the first positioning component 1 returns to the center point O. At this time, the positioning assembly 100a is in the rear-facing sitting mode. Through the positioning assembly 100a of the embodiment of the present application and by rotating the first positioning component 1, the first positioning component 1 can be pulled out to the right side, and by rotating the first positioning component 1 continuously, the first positioning component 1 can be switched from the forward-facing sitting mode to the rear-facing sitting mode. In addition, when the first positioning component 1 is in the rear-facing sitting mode as shown in FIG. 13, the first positioning component 1 may be rotated in theopposite direction, which is opposite to the above-mentioned sliding process. Through the positioning assembly 100a of the embodiment of the present application, the first positioning component 1 can be pulled out to the right side, and the rear-facing sitting mode can also be switched to the forward-facing sitting mode. Thus, this embodiment of the present application can realize pulling out of the first positioning component 1 to the right side and achieve the switching between the forward-facing sitting mode and the rear-facing sitting mode of the first positioning component 1. In an embodiment of the present application, corresponding to the positioning assembly 100a being in the rear-facing sitting mode, the first sliding member 121a on the first positioning component 1 is located at a position on the first positioning component 1, which corresponds to the point Al, and the second sliding member 121b on the first positioning component 1 is located at a position corresponding to the point Bl. The working process of the positioning assembly 100a of this embodiment is similar to the above process, which will not be described repeatedly herein. The working process of this embodiment differs from the above process in that: first, the first positioning component 1 rotates in the direction indicated by the arrow at the point Al and draws back towards the right side at the same time; then the child safety seat is rotated continuously, and the positioning assembly 100a returns to the center point, and at this time, the positioning assembly 100a is in the forward-facing sitting mode; then the first positioning component 1 can be rotated in the reverse direction, which is opposite to the above sliding process, so that the first positioning component 1 can draw back towards the right side, and that the positioning assembly 100a can be further switched from the forward-facing sitting mode to the original rear-facing sitting mode.

[0217] A third aspect of the present application provides a positioning assembly 100a. In the embodiment of the third aspect, in order to allow the first positioning component 1 to slide outwards laterally relative to the second positioning component 2, the first sliding member 121a and the second sliding member 121b are arranged on the first positioning component 1, and the first track and the second track are arranged on the second positioning component 2. The third aspect of the present application differs from the first aspect in that, the first track is a circular track, which is arranged along the frontrear direction of the second positioning component 2, and the second track is a straight track, which is arranged along the left-right direction of the second positioning component 2.

[0218] In some embodiments of the third aspect, as shown in FIG. 18 a or FIG. 18 b, the first track 21E5 is a circular track, and the circular track is configured to surround the center point O of the second positioning component 2. In an embodiment, the circular track is arranged along the front-rear direction of the second positioning component 2, that is, the distance between the frontmost end and the rearmost end of the circular track, which are located at the point A4 and the point Al in FIG. 18a or FIG. 18b, respectively, is greater than the distance between the leftmost end and the rightmost end of the circular track, which are located at the point A3 and the point A2 in FIG. 18a or FIG. 18b, respectively. The frontmost end (the point A4) of the first track 21E5 is located at any position in front of the front-back center line Y of the second positioning component 2. The rearmost end (the point Al) of the first track 21E5 may be located at any position at the back of the front-back center line Y of the second positioning component 2. The circular track is a form of the arc track. The difference between the circular track and the arc track is that the circular track is a structure composed of multiple arc segments. Such an arrangement enables the child safety seat to realize a cycle of being laterally pushed out and switched between the forward-facing sitting mode and the rear-facing sitting mode.

[0219] In one of the embodiments, as shown in FIG. 18a, the second track 22E5 is a straight track extending in the left-right direction of the second positioning component 2. Specifically, the second track22E5 is configured to extend to the left and the right respectively in a direction parallel to the left-right center line X of the second positioning component 2 and extend to the outside of the circular track. In this way, the center point B 1 of the second track 22E5 does not coincide with the center point O of the second positioning component 2, that is, the second track 22E5 is arranged apart from the left-right center line X of the second positioning component 2. In an embodiment, corresponding to the positioning assembly 100a being in the forward-facing sitting mode or the rear-facing sitting mode, the first sliding member 121a is arranged on the lower surface of the first positioning component 1 and located at a position which corresponds to the frontmost end or the rearmost end of the first track 21E5 (respectively located at the point A4 or the point Al in FIG. 18a), and the second sliding member 121b is arranged on the lower surface of the first positioning component 1 and located at a position which corresponds to the center point B 1 of the second track 22E5.

[0220] In another embodiment, as shown in FIG. 18b, the second track 22E5 is a straight track, which extends along the left-right center line X from the center point O of the second positioning component 2 to the left and right portions respectively and extends to the outside of the circular track. In this arrangement, the center point Bl of the second track 22E5 coincides with the center point O of the second positioning component 2. Further, corresponding to the positioning assembly 100a being in the forward-facing sitting mode or the rear-facing sitting mode, the first sliding member 121a is arranged on the lower surface of the first positioning component 1 and located at a position corresponding to the frontmost end or the rearmost end of the first track 21E5 (respectively located at the point A4 or the point Al in FIG. 18 a), and the second sliding member 121b is arranged on the lower surface of the first positioning component 1 and located at a position corresponding to the center point B 1 of the second track 22E5, that is, the center point O of the second positioning component 2. In another embodiment, as shown in FIG. 18b, preferably, the first track 21E6 is an elliptical track centered on the center point O of the second positioning component 2, and a straight line connecting the frontmost end and the rearmost end of the elliptical track (located at the point A4 and the point Al in FIG. 18b respectively) is the major axis of the elliptical track, and a straight line connecting the leftmost end B2 and the rightmost end B3 of the elliptical track is a minor axis of the elliptical track. The second track 22E6 is a straight track, which is located in the minor axis (the straight line connecting the point A3 and the point A2 in FIG. 18b) of the elliptical track, and extends to the outside of the elliptical track. Further, the center point Bl of the straight track coincides with the center point O of the second positioning component 2. The second positioning component 2 of the positioning assembly of the present application is provided with the elliptical track surrounding the center point O (i.e., the point Bl), the straight track is formed in the left-right center line, i.e., formed in the direction of the minor axis of the ellipse. The straight line connecting the frontmost end (the point A4) and the rearmost end (the point Al) of the elliptical track is the major axis of the elliptical track, the second track 22E6 is the straight track, which is located in the minor axis of the elliptical track, so as to ensure that when the child safety seat is rotated, the first positioning component 1 of the positioning assembly 100a can be driven to rotate and move towards either the left or right side. In addition, the embodiment of the third aspect of the present application can also realize the switching between the forward-facing sitting mode and the rear-facing sitting mode of the positioning assembly, which is described in detail as follows.

[0221] In an embodiment of the present application, referring to FIG. 4 and FIG. 18b, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 121a on the first positioning component 1 is located at the position of the point Al in the figure, and thesecond sliding member 121b is located at the position of the center point Bl of the second track 22E6 in the figure. The embodiment of the present application will be illustrated by taking the positioning assembly being in the forward-facing sitting mode first as shown in FIG. 4 as an example. The child safety seat is rotated to drive the first positioning component 1 of the positioning assembly to start rotating, so that the first sliding member 121a on the first positioning component 1 starts sliding from the point Al and slides along the first track 21E6 in the direction indicated by an arrow at the point Al. At the same time, the second sliding member 121b is driven to start sliding from the point Bl and slides along the second track 22E6 toward the left side of the second positioning component 2. In this process, the first positioning component 1 gradually moves to the left side while rotating. When the first sliding member 121a slides to the point A2 in the first track 21E6, the second sliding member 121b slides to the point B2 in the second track 22E6, and the first positioning component 1 comes into a state of extending to the left side (refer to FIG. 6), so that the child safety seat is in a state of extending to the left side, and that the child safety seat is closer to a left door of the vehicle, thereby making it convenient to carry the child in or out from the left side. The child safety seat is rotated continuously, so that the first sliding member 121a on the first positioning component 1 starts sliding from the point A2 and continues to slide along the first track 21E6 in the direction indicated by an arrow at point A2, that is, slides from the point A2 to the point A4. At the same time, the second sliding member 121b is driven to slide from the point B2 toward the center point Bl of the second track 22E6. In this process, the first positioning component 1 gradually returns to the center point Bl of the second track 22E6 while rotating. As shown in FIG. 18 b, when the first sliding member 121a slides to the point A4 in the first track 21E6, the second sliding member 121b slides to the point Bl in the second track 22E6, and the first positioning component 1 returns to the center point Bl. At this time, the positioning assembly 100a is in the rear-facing sitting mode (as shown in FIG. 13), thus the forward-facing sitting mode of the child safety seat is switched to the rear-facing sitting mode, thereby improving the safety of the child safety seat and improving the usage and operation experience and the satisfaction for the child safety seat. Through the positioning assembly 100a of the embodiment of the present application, the first positioning component 1 can be pulled out to the left side, and the forward-facing sitting mode can also be switched to the rear-facing sitting mode. At this time, the child safety seat is rotated continuously, so that the first sliding member 121a on the first positioning component 1 starts sliding from the point A4 and slides along the first track 21E6 in the direction indicated by an arrow at the point A4, that is, slides from the point A4 to the point A3. At the same time, the second sliding member 121b is driven to start sliding from the point Bl and slide toward the right portion along the second track 22E6, that is, slides from the point Bl to the point B3. During this process, the first positioning component 1 gradually moves toward the right side while rotating. When the first sliding member 121a slides to the point A3 in the first track 21E6, the second sliding member 121b slides to the point B3 in the second track 22E6, and the first positioning component 1 comes into a state of extending to the right side (refer to FIG. 9), so that the child safety seat is in a state of extending to the right side and is closer to a right door of the vehicle, thereby making it convenient to carry the child in or out from the right side. The child safety seat is rotated continuously, so that the first sliding member 121a on the first positioning component 1 starts sliding from the point A3 and continues to slide along the first track 21E6 in the direction indicated by an arrow at the point A3, that is, slides from the point A3 to the point Al. At the same time, the second sliding member 121b is driven to slide from the point B3 to the center point Bl of the second track 22E6. During this process, the first positioning component 1 gradually returns to the center point B 1 of the second track 22E6 whilerotating. As shown in FIG. 18b, when the first sliding member 121a slides to the point Al in the first track 21E6, the second sliding member 121b slides to the center point Bl of the second track 22E6, and the first positioning component 1 returns to the center point Bl. At this time, the positioning assembly 100a is in the forward-facing sitting mode (as shown in FIG. 4). Through the positioning assembly 100a of the embodiment of the present application, the first positioning component 1 can be pulled out to the right side, and at the same time, the positioning assembly 100a can also be switched from the rear-facing sitting mode to the forward-facing sitting mode, that is, it returns to the initial forward-facing sitting mode. The child safety seat can be switched between the forward-facing sitting mode and the rear-facing sitting mode freely, thereby improving the safety of the child safety seat, and improving the usage and operation experience and the satisfaction for the child safety seat. During an actual use of this embodiment of the present application, the first sliding member 121a may also slide in the reverse direction, that is, rotates from the point Al to the point A3, and the first positioning component 1 comes into a state of extending to the right side; then the first sliding member 121a rotates from the point A3 to the point A4, the first positioning component 1 returns to the center point Bl, and the forward-facing sitting mode is switched to the rear-facing sitting mode; then the first sliding member 121a rotates from the point A4 to the point A2, the first positioning component 1 comes into a state of extending to the left side; then the first sliding member 121a rotates from the point A2 to the point Al, the first positioning component 1 returns to the center point Bl, and the rear-facing sitting mode is switched to the forwardfacing sitting mode. From the above description of the use process of this embodiment of the present application, it can be known that in this embodiment of the present application, when the child safety seat is rotated, the child safety seat can be rotated and move together with the first positioning component 1 of the positioning assembly 100a to come into a state of extending to the left side or extending to the right side. In addition, the switching between the forward-facing sitting mode and the rear-facing sitting mode of the positioning assembly can be achieved. The child safety seat can be adjusted to come into a state of extending to either the left side or the right side, so that the child safety seat is closer to the left or right door of the vehicle, thereby making it convenient to carry the child in or out. The forward-facing sitting mode and the rear-facing sitting mode of the child safety seat can be switched freely, thereby improving the safety of the child safety seat, and improving the usage and operation experience and the satisfaction for the child safety seat.

[0222] In another embodiment of the present application, referring to FIG. 4 and FIG. 18b, corresponding to the positioning assembly 100a being in the rear-facing sitting mode, the first sliding member 121a on the first positioning component 1 is located at the position of the point Al in the figure, and the second sliding member 121b is located at the position of the center point Blof the second track 22E6 in the figure. That is, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 121a on the first positioning component 1 is located at the position of the point A4 in the figure, and the second sliding member 121b is located at the position of the center point Bl of the second track 22E6 in the figure. The use process of the embodiment of the present application will be illustrated by taking the seat being in the rear-facing sitting mode first as an example. The child safety seat is rotated to drive the first positioning component 1 of the positioning assembly to start rotating, so that the first sliding member 121a on the first positioning component 1 starts sliding from the point Al and slides along the first track 21 E6 in the direction indicated by the arrow at the point Al. At the same time, the second sliding member 121b is driven to start sliding from the point Bl and slides along the second track 22E6 toward the left side of the second positioning component 2. In thisprocess, the first positioning component 1 gradually draws back towards the left side while rotating. When the first sliding member 121a slides to the point A2 in the first track 21E6, the second sliding member 121b slides to the point B2 in the second track 22E6, and the first positioning component 1 draws back towards the left side, so that the child safety seat is in a state of drawing back towards the left side. This embodiment of the present application enables the child safety seat to rotate and to draw back towards the left side while rotating, so that when the child safety seat is installed on a right seat of the vehicle, the child safety seat can be prevented from hitting the right door when it is rotated to face the right side for use, and moreover, some space is reserved at the right side for the child to put feet, thereby improving the use and operation experience and the satisfaction for the child safety seat. The child safety seat is rotated continuously, so that the first sliding member 121a on the first positioning component 1 starts sliding from the point A2 and continues to slide along the first track 21E6 in the direction indicated by the arrow at the point A2, that is, slides from the point A2 to the point A4. At the same time, the second sliding member 121b is driven to slide from the point B2 toward the center point Bl of the second track 22E6. In this process, the first positioning component 1 gradually returns to the center point Bl of the second track 22E6 while rotating. As shown in FIG. 18b, when the first sliding member 121a slides to the point A4 in the first track 21E6, and when the second sliding member 121b slides to the point Bl in the second track 22E6, the first positioning component 1 returns to the center point Bl. At this time, the positioning assembly 100a is in the forward-facing sitting mode (as shown in FIG. 4). Through the positioning assembly 100a of the embodiment of the present application, the rearfacing sitting mode can also be switched to the forward-facing sitting mode. At this time, the child safety seat is rotated continuously, so that the first sliding member 121a on the first positioning component 1 starts sliding from the point A4 and slides along the first track 21E6 in the direction indicated by the arrow at the point A4, that is, slides from the point A4 to the point A3. At the same time, the second sliding member 121b is driven to start sliding from the point B 1 and slide toward the right portion along the second track 22E6, that is, slides from the point Bl to the point B3. During this process, the first positioning component 1 gradually draws back towards the right side while rotating. When the first sliding member 121a slides to the point A3 in the first track 21E6, the second sliding member 121b slides to the point B3 in the second track 22E6, and the first positioning component 1 draws back towards the right side, so that the child safety seat is in a state of drawing back towards the right side. This embodiment of the present application enables the child safety seat to rotate and draw back towards the right side while rotating, so that when the child safety seat is installed on a left seat of the vehicle, the child safety seat can be prevented from hitting the left door when it is rotated to face the left side for use, and moreover, some space is reserved at the left side for the child to put feet, thereby improving the use and operation experience and the satisfaction for the child safety seat. The child safety seat is rotated continuously, so that the first sliding member 121a on the first positioning component 1 starts sliding from the point A3 and continues to slide along the first track 21E6 in the direction indicated by the arrow at the point A3, that is, slides from the point A3 to the point Al. At the same time, the second sliding member 121b is driven to slide from the point B3 to the center point B 1 of the second track 22E6. During this process, the first positioning component 1 gradually returns to the center point Bl of the second track 22E6 while rotating. As shown in FIG. 18b, when the first sliding member 121a slides to the point Al in the first track 21E6, the second sliding member 121b slides to the center point Bl of the second track 22E6, and the first positioning component 1 returns to the center point Bl. At this time, the positioning assembly 100a is in the rear-facing sitting mode (as shown in FIG. 13).

[0223] Further, as shown in FIG. 18a, in an embodiment of the present application, corresponding the first positioning component 1 in the state of extending to the left side, the first sliding member 121a is arranged on the lower surface of the first positioning component 1, and is located at a position corresponding to the rightmost end (the point A2) of the first track 21E5, and the second sliding member 121b is arranged on the lower surface of the first positioning component 1, and is located at a position corresponding to the leftmost end (the point B2) of the second track 22E5; and / or corresponding to the first positioning component 1 being in the state of extending to the right side, the first sliding member 121a is arranged on the lower surface of the first positioning component 1, and is located at a position corresponding to the leftmost end (the point A3) of the first track 21E5, and the second sliding member 121b is arranged on the lower surface of the first positioning component 1, and is located at a position corresponding to the rightmost end (the point B3) of the second track 22E5. Further, as shown in FIG. 18b, in another embodiment of the present application, corresponding to the first positioning component 1 being in the state of drawing back towards the left side, the first sliding member 121a is arranged on the lower surface of the first positioning component 1, and is located at a position corresponding to the rightmost end (the point A2) of the first track 21E6, and the second sliding member 121b is arranged on the lower surface of the first positioning component 1, and is located at a position corresponding to the leftmost end (the point B2) of the second track 22E6; and / or corresponding to the first positioning component 1 being in the state of drawing back towards the right side, the first sliding member 121a is arranged on the lower surface of the first positioning component 1, and is located at a position corresponding to the leftmost end (the point A3) of the first track 21E6, and the second sliding member 121b is arranged on the lower surface of the first positioning component 1, and is located at a position corresponding to the rightmost end (the point B3) of the second track 22E6.

[0224] In some embodiments of the present application, in order to achieve the safety of fixing the child safety seat relative to the base when in use, the lengths of the first track and the second track may be adjusted, for example, the distance between the leftmost end and the rightmost end of the first track may be increased proportionally, or the length of the second track may be reduced proportionally, so that the first positioning component can rotate and move to come into a state of extending to one side relative to the second positioning component by a smaller distance, so as to ensure the stability of the fixation of the first positioning component.

[0225] In some embodiments of the present application, in order to realize the effect that the first positioning component 1 can be rotated to come into a state of extending to one side relative to the second positioning component 2, the length of the second track is greater than or equal to a difference between the length of the major axis and the length of the minor axis. Specifically, the length of the second track is greater than or equal to the difference between the length of the major axis and the minor axis and is smaller than the left-right dimension of the second positioning component. For example, if the second positioning component 2 is circular, the length of the second track is smaller than the diameter of the second positioning component 2. In an embodiment, the length of the second track is equal to the difference between the length of the major axis and the length of the minor axis, and through this arrangement, when the first positioning component 1 is rotated relative to the second positioning component 2 to such a position that the child safety seat faces the vehicle door, the child safety child can move while rotating, that is, the child safety child can come into a state of extending to one side towards the vehicle door. In other embodiments not shown, the length of the second track is greater than the difference between the length of the major axis and the minor axis, and in this arrangement, when thefirst positioning component 1 is rotated relative to the second positioning component 2 to such a position that the child safety seat faces the vehicle door, since the first sliding member 121a and the second sliding member 121b are both located on the second track, i.e., the straight track, when the child safety seat is not extended enough toward the vehicle door, the child safety seat can be pulled toward the vehicle door to increase the length of the child safety seat extending toward the vehicle door, thus making it easy to carry the baby out.

[0226] In some embodiments of the present application, referring to FIG. 19, in order to increase the flexibility of the first sliding member 121a sliding in the first track (21E1 or 21E2 shown in FIG. 3a, 21El' or21E2' shown in FIG. 3b, 21 E3 or 21E4 shown in FIG. 10, 21E5 shown in FIG. 18a, 21E6 shown in FIG. 18b, 21E8 shown in FIG. 21, or 21E7 shown in FIG. 30 ), and the flexibility of the second sliding member 121b sliding in the second track (22E1 or 22E2 shown in FIG. 3a, 22E1' or 22E2' shown in FIG. 3b, 22E3 or 22E4 shown in FIG. 10, 22E5 shown in FIG. 18a, 22E6 shown in FIG. 18b, 22E8 shown in FIG. 21, or 22E7 shown in FIG. 30), reduce a friction resistance, and increase the wear resistance, the first sliding member 121a of the present application is sleeved with a first bearing 122a, and the first bearing 122a engages with the first track (21E1 or 21E2 shown in FIG. 3a, 21E1' or 21E2' shown in FIG. 3b, 21E3 or 21E4 shown in FIG. 10, 21E5 shown in FIG. 18a, 21E6 shown in FIG. 18b, 21E8 shown in FIG. 21, or 21E7 shown in FIG. 30), and the second sliding member 121b is sleeved with a second bearing 122b, and the second bearing 122b engages with the second track (22E1 or 22E2 shown in FIG. 3a, 22E1' or 22E2' shown in FIG. 3b, 22E3 or 22E4 shown in FIG. 10, 22E5 shown in FIG. 18a, 22E6 shown in FIG. 18b, 22E8 shown in FIG. 21, or 22E7 shown in FIG. 30). The first sliding member 121a, via the first bearing 122a sleeved thereon, engages with the first track and can slide in the first track; and the second sliding member 121b, via the second bearing 122b sleeved thereon, engages with the second track and can slide in the second track, thereby increasing the sliding flexibility, reducing the friction resistance, and increasing the wear resistance.

[0227] In some embodiments of the present application, during the rotation and movement of the first positioning component 1, in order to prevent the first sliding member 121a sleeved with the first bearing 122a from entering the second track, an outer contour dimension of the first bearing 122a is configured to be larger than an outer contour dimension of the second bearing 122b, or the outer contour dimension of the first bearing 122a is configured to be larger than the width of the second track. In such arrangement, the first positioning component 1 can be ensured to rotate and move smoothly, and the first bearing 122a of the first positioning component 1 can be prevented from sliding to a malposition. Specifically, the outer contour dimension of the first bearing 122a and the outer contour dimension of the second bearing 122b are the outer diameter of the first bearing 122a and the outer diameter of the second bearing 122b, respectively.

[0228] In some embodiments of the present application, as shown in FIG. 19, when the second sliding member 121b sleeved with the second bearing 122b slides in the second track, in order to prevent the second bearing 122b from entering the first track, the second positioning component 2 further includes a third track 23. The third track 23 is arranged below the second track. The second sliding member 121b is configured to pass through the second track and to be inserted into the third track 23. In this arrangement, the first positioning component 1 can be ensured to rotate and move smoothly, and the second bearing 122b of the first positioning component 1 can be prevented from sliding to a malposition. In an embodiment, the third track 23 is configured to be a groove. In some embodiments, the third track 23 may not be arranged, and the depth of the second track may be configured to be greater than the depthof the first track, and in this arrangement, the depth to which the second sliding member 121b is inserted into the second track may be greater than the depth to which the first sliding member 121a is inserted into the first track, thereby preventing the second bearing 122b from sliding to a malposition.

[0229] In some embodiments of the present application, as shown in FIGS. 19 and 20, the third positioning component 3 includes a bracket 31, which is disposed at the bottom of the third positioning component 3. The positioning assembly 100a further includes a first limiting hook 4a and a second limiting hook 4b, and the first limiting hook 4a and the second limiting hook 4b are disposed at the frontmost end and the rearmost end of the third positioning component 3 respectively. The upper end of the first limiting hook 4a and the upper end of the second limiting hook 4b extend upward and stick out of the second positioning component 2, and are configured to engage with the first positioning component 1. The lower end 4a 1 of the first limiting hook 4a and the lower end 4b 1 of the second limiting hook 4b are respectively fixed to the bracket 31. Specifically, limiting grooves are formed between the second positioning component 2 and the first limit hook 4a, and between the second positioning component 2 and the second limit hook 4b, respectively. The limiting grooves are configured to limit an upward or downward movement of the first positioning component 1, while allowing the first positioning component 1 to slide and move relative to the second positioning component 2 (in a plane of the front, rear, left and right directions), thereby increasing the stability of the first positioning component in the forward-facing sitting mode or the rear-facing sitting mode. Moreover, the second positioning component 2 may be fixed on the third positioning component 3, thereby increasing the stability of connection of the second positioning component 2 and the third positioning component 3.

[0230] In some embodiments of the present application, as shown in FIGS. 19 and 20, in order to facilitate the installation of the child safety seat, at least one engaging mechanism 111 is provided on the upper surface of the first positioning component 1. Specifically, at least one engaging mechanism 111 is provided on the upper surface of the upper seat body 11 of the first positioning component 1. Further, in order to increase the stability of the child safety seat, an engaging mechanism 111 is provided on each of the front and rear sides of the upper surface of the upper seat body 11. Specifically, the engaging mechanism 111 is a locking slot. By arranging the engaging mechanism 111 on the upper surface of the upper seat body 11 of the first positioning component 1, during an actual use of the present application, the positioning assembly 100a is installed on the vehicle seat, and the child safety seat 200 (shown in FIG. 109) can be locked and installed in the engaging mechanism 111 of the first positioning component 1 of the positioning assembly 100a. After the child safety seat 200 is used, the child safety seat 200 may also be released from the engaging mechanism 111, thereby realizing a detachable connection between the child safety seat 200 and the positioning assembly 100a.

[0231] In yet another embodiment of the third aspect, as shown in FIG. 21, the positioning assembly 100a includes a first positioning component 1 and a second positioning component 2. A first track 21E8 and a second track 22E8 are arranged on the second positioning component 2. The first track 21E8 is a circular track, which is configured to surround the center point O of the second positioning component 2. Further, a distance between the frontmost end A4 and the rearmost end Al of the first track 21E8 is greater than a distance between the leftmost end A3 and the rightmost end A2 of the circular track 21E8. Further, the second track 22E8 is a straight track, which extends to the left and to the right along the leftright center line X from the center point O of the second positioning component 2 to the outside of the first track 21E8, and specifically, extends to the leftmost end B2 and the rightmost end B3, respectively, and intersects with the circular track at the left intersection point A3 (i.e., the leftmost end A3 of thecircular track 21E8) and at the right intersection point A2 (i.e., the rightmost end A2 of the circular track 21E8). Alternatively, the second track 22E8 is a straight track, and extends to the left and to the right along a direction parallel to the left-right center line X from the center point O of the second positioning component 2 to the outside of the first track 21E8.

[0232] In this embodiment, the center point B 1 of the second track 22E8 coincides with the center point O of the second positioning component 2. In some other embodiments, the second track 22E8 is a straight track, and the second track 22E8 may also extend to the left and the right respectively along a direction parallel to the left-right center line X of the second positioning component 2 and reach the outside of the first track 21E8, that is, the center point B 1 of the second track 22E8 deviates from the center point O of the second positioning component 2.

[0233] In the embodiment, as shown in FIG. 21 and FIG. 22, correspondingly, a first sliding member 121a and a second sliding member 121b are provided on the first positioning component 1. The positions where the first sliding member 121a and the second sliding member 121b on the first positioning component 1 are arranged correspond to the structures and positions of the first track 21E8 and the second track 22E8 on the second positioning component 2. Specifically, corresponding to the positioning assembly 100a being in the forward-facing sitting mode (as shown in FIG. 23), the first sliding member 121a and the second sliding member 121b are arranged at positions as follows. The first sliding member 121a is arranged on the lower surface of the first positioning component 1, and located at a position corresponding to the right intersection point A2 of the first track 21E8 and the second track 22E8. The second sliding member 121b is arranged on the lower surface of the first positioning component 1 and located at a position corresponding to the leftmost end B2 of the second track 22E8.

[0234] This embodiment of the present application will be illustrated by taking the positioning assembly 100a being in the forward-facing sitting mode (shown in FIG.23) as an example. Referring to FIGS. 21-29, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 121a on the first positioning component 1 is located at the position corresponding to the rightmost end A2 of the circular track 21E8 in FIG. 21, and the second sliding member 121b is located at the position corresponding to the leftmost end B2 of the second track 22E8 in FIG. 21. When the child safety seat is rotated to drive the first positioning component 1 of the positioning assembly to start rotating, the first sliding member 121a on the first positioning component 1 starts sliding from the point A2 and slides along the first track 21E8 in the direction indicated by the arrow at the point A2, and at the same time, the second sliding member 121b is driven to slide from the point B2 toward the center point B 1 of the second track 22E8 along the second track 22E8. In this process, the first positioning component 1 gradually moves toward the front side while rotating. As shown in FIGS. 24 and 25, when the first sliding member 121a slides to the point A4 in the first track 21E8, the second sliding member 121b slides to the center point B 1 of the second track 22E8. At this time, the first positioning component 1 comes into a state of extending to the front side but facing the left side, that is, the front portion of the first positioning component 1 is facing the left side, and the center of the first positioning component 1 is displaced toward the front side of the second positioning component 2 relative to the center of the second positioning component 2, so that the child safety seat is in a state of extending to the front side but facing the left side Therefore, this embodiment of the present application can realize the effect that the child safety seat is rotated to come into a state of extending to the front side but facing the left side, thereby realizing a flexible adjustment for the position where the child is seated, improving the comfort of the child sitting in the child safety seat, and further making itconvenient to carry the child in or out the vehicle from the left side, thereby improving the use and operation experience and satisfaction for the child safety seat.

[0235] As shown in FIG. 24, the child safety seat is continuously rotated to drive the first sliding member 121a on the first positioning component 1 to continue to slide from the point A4 and slide along the first track 21E8 in a direction indicated by the arrow at the point A4, and at the same time, the second sliding member 121b is driven to slide from the center point Bl of the second track 22E8 toward the rightmost end B3 of the second track 22E8. In this process, the first positioning component 1 gradually returns to the center point Bl of the second track 22E8 while rotating. As shown in FIG. 26 and FIG. 27, when the first sliding member 121a slides from the point A4 to the point A3, namely, to the left intersection point A3 of the first track 21E8 and the second track 22E8, the second sliding member 121b slides to the rightmost end B3 of the second track 22E8. At this time, the first positioning component 1 returns to the center point Bl of the second track 22E8, and the positioning assembly 100a is in the rearfacing sitting mode. Therefore, through the positioning assembly 100a of the embodiment of the present application, the child safety seat can be further switched from the forward-facing sitting mode to the rear-facing sitting mode, thereby making it convenient to adjust the direction in which the child is seated, and improving the safety of the child sitting in the child safety seat.

[0236] As shown in FIG. 26, the child safety seat is continuously rotated to drive the first sliding member 121a on the first positioning component 1 to continue to slide from the point A3 and slide along the first track 21E8 in a direction indicated by the arrow at the point A3, and at the same time, the second sliding member 121b is driven to slide from the point B3 toward the center point B 1 of the second track 22E8. In this process, the first positioning component 1 rotates to come into a state of extending to the rear side but facing the right side, that is, the front portion of the first positioning component 1 is facing the right side, and the center of the first positioning component 1 is displaced toward the rear side of the second positioning component 2 relative to the center of the second positioning component. As shown in FIG. 28 and FIG. 29, when the first sliding member 121a slides from the point A3 to the point Al, namely, to the rearmost end Al of the first track 21E8, the second sliding member 121b slides to the center point Bl of the second track 22E8. At this time, the first positioning component 1 comes into a state of extending to the rear side but facing the right side, that is, the front portion of the first positioning component 1 is facing the right side, and the center of the first positioning component 1 is displaced toward the rear side of the second positioning component 2 relative to the center of the second positioning component, so that the child safety seat is in a state of extending to the rear side but facing the right side. Therefore, this embodiment of the present application can realize a flexible adjustment for the position where the child is seated, improving the comfort of the child sitting in the child safety seat, and further making it convenient to carry the child in or out the vehicle from the right side, thereby improving the use and operation experience and satisfaction for the child safety seat.

[0237] As shown in FIG. 28, the child safety seat is continuously rotated to drive the first sliding member 121a on the first positioning component 1 to continue to slide from the point Al and slide along the first track 21E8 in a direction indicated by the arrow at the point Al, and at the same time, the second sliding member 121b is driven to slide from the center point Bl of the second track 22E8 toward the leftmost end B2 of the second track 22E8. In this process, the first positioning component 1 gradually returns to the center point B 1 of the second track 22E8 while rotating. When the first sliding member 121a slides from the point Al to the point A2, namely, to the right intersection point A2 of the first track 21E8 and the second track 22E8, the second sliding member 121b slides to the rightmost end B2 of thesecond track 22E8. At this time, the first positioning component 1 returns to the center point Bl of the second track 22E8, and the positioning assembly 100a is in the forward-facing sitting mode, as shown in FIG. 21 and FIG. 23. Therefore, through the positioning assembly 100a of the embodiment of the present application, the child safety seat can be further switched from the rear-facing sitting mode to the forward-facing sitting mode, thereby making it convenient to adjust the direction in which the child is seated and improving the comfort and safety of the child sitting in the child safety seat. At this point, the child safety seat completes a rotation cycle, and different functions are realized in different stages. The child safety seat can also be rotated in a direction opposite to the above rotation direction to realize corresponding functions in each stage, and the corresponding use process and the effects that can be achieved are the same as those described above respectively, which will not be repeatedly described in the present application.

[0238] Alternatively, in other embodiment of the present application, corresponding to the positioning assembly 100a being in the forward-facing sitting mode (as shown in FIG. 23), the first sliding member 121a and the second sliding member 121b may be arranged at positions as follows. The first sliding member 121a is arranged on the lower surface of the first positioning component 1, and located at a position corresponding to the left intersection point A3 of the first track 21E8 and the second track 22E8. The second sliding member 121b is arranged on the lower surface of the first positioning component 1 and located at a position corresponding to the rightmost end B3 of the second track 22E8. The specific working process of the positioning assembly 100a of this embodiment is similar to the aforementioned process, which will not be described repeatedly herein.

[0239] A fourth aspect of the present application provides a positioning assembly 100a. In an embodiment of the present application, as shown in FIGS. 30 to 32, the positioning assembly 100a includes a first positioning component 1 and a second positioning component 2. A first track 21E7 and a second track 22E7 are arranged on the second positioning component 2. The first track 21E7 is a circular track, which is configured to surround the center point O of the second positioning component 2. A distance between the leftmost end a2 and the rightmost end a4 of the first track 21E7 is greater than a distance between the frontmost end al and the rearmost end a3 of the first track 21E7. The second track 22E7 is a straight track extending along the front-rear direction of the second positioning component 2. Specifically, the second track 22E7 extends forwards and backwards along the front-back center line Y from the center point O of the second positioning component 2 to the outside of the first track 21E7, and specifically, extends to the frontmost end b3 and the rearmost end b2, respectively, and intersects with the circular track at the front intersection point al (i.e., the frontmost end al of the circular track 21E7) and at the rear intersection point a3 (i.e., the rearmost end a3 of the circular track 21E7).

[0240] In this embodiment, the center point bl of the second track 22E7 coincides with the center point O of the second positioning component 2. In some other embodiments, the second track 22E7 may also extend forwards and backwards along a direction parallel to the front-back center line Y of the second positioning component 2 and reach the outside of the first track 21E7, that is, the center point bl of the second track 22E7 deviates from the center point O of the second positioning component 2.

[0241] In some embodiments, the first track 21E7 is an elliptical track centered on the center O of the second positioning component 2, and the line connecting the leftmost end a2 and the rightmost end a4 of the first track 21E7 is the major axis of the elliptical track. The second track 22E7 is a straight track located in the minor axis of the elliptical track and extends to the outside of the elliptical track.

[0242] As shown in FIG. 31, in an embodiment of the present application, correspondingly, a first sliding member 121a and a second sliding member 121b are arranged on the first positioning component 1. The positions, where the first sliding member 121a and the second sliding member 121b on the first positioning component 1 are arranged, correspond to the structures and positions of the first track and the second track on the second positioning component 2. Specifically, as shown in FIG. 30, corresponding to the positioning assembly 100a being in the forward-facing sitting mode (as shown in FIG. 32), the first sliding member 121a and the second sliding member 121b are arranged at positions as follows. The first sliding member 121a is arranged on the lower surface of the first positioning component 1, and located at a position corresponding to the front intersection point al of the first track 21E7 and the second track 22E7. The second sliding member 121b is arranged on the lower surface of the first positioning component 1 and located at a position corresponding to the rearmost end b2 of the second track 22E7.

[0243] The embodiment of the present application will be illustrated by taking the positioning assembly 100a being in the forward-facing sitting mode (shown in FIG. 32) as an example. Referring to FIGS. SO- 32, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 121a on the first positioning component 1 is located at the position corresponding to the frontmost end al of the first track 21E7 in FIG. 30, and the second sliding member 121b is located at the position corresponding to the rearmost end b2 of the second track 22E7 in FIG. 30. When the child safety seat is rotated to drive the first positioning component 1 of the positioning assembly to start rotating, the first sliding member 121a on the first positioning component 1 starts sliding from the point al and slides along the first track 21E7 in the direction indicated by the arrow at the point al, and at the same time, the second sliding member 121b is driven to slide from the point b2 toward the center point bl of the second track 22E7 along the second track 22E7. In this process, the first positioning component 1 gradually moves toward the left side while rotating. As shown in FIGS. 33 and 34, when the first sliding member 121a slides to the point a2 in the first track 21E7, the second sliding member 121b slides to the center point bl of the second track 22E7. At this time, the first positioning component 1 comes into a state of extending to the left side, so that the child safety seat is in a state of extending to the left side. Therefore, this embodiment of the present application can realize the effect that the child safety seat is rotated to come into a state of extending to the left side, thereby making it convenient to carry the child in or out the vehicle from the left side and improving the use and operation experience and satisfaction for the child safety seat.

[0244] As shown in FIG. 33, the child safety seat is continuously rotated to drive the first sliding member 121a on the first positioning component 1 to continue to slide from the point a2 and slide along the first track 21E7 in a direction indicated by the arrow at the point a2, and at the same time, the second sliding member 121b is driven to slide from the center point bl of the second track 22E7 toward the frontmost end b3 of the second track 22E7. In this process, the first positioning component 1 gradually returns to the center point bl of the second track 22E7 while rotating. As shown in FIG. 35 and FIG. 36, when the first sliding member 121a slides from the point a2 to the point a3, namely, to the rear intersection point a3 of the first track 21E7 and the second track 22E7, the second sliding member 121b slides to the frontmost end b3 of the second track 22E7. At this time, the first positioning component 1 returns to the center point bl of the second track 22E7, and the positioning assembly 100a is in the rearfacing sitting mode. Therefore, through the positioning assembly 100a of the embodiment of the present application, the child safety seat can be further switched from the forward-facing sitting mode to therear-facing sitting mode, thereby making it convenient to adjust the direction in which the child is seated and improving the safety of the child sitting in the child safety seat.

[0245] As shown in FIG. 35, the child safety seat is continuously rotated to drive the first sliding member 121a on the first positioning component 1 to continue to slide from the point a3 and slide along the first track 21E7 in a direction indicated by the arrow at the point a3, and at the same time, the second sliding member 121b is driven to slide from the point b3 toward the center point bl of the second track 22E7. In this process, the first positioning component 1 gradually moves toward the right side while rotating. As shown in FIG. 37 and FIG. 38, when the first sliding member 121a slides from the point a3 to the point a4, namely, to the rightmost end namely the point a4 of the first track 21E7, the second sliding member 121b slides to the center point bl of the second track 22E7. At this time, the first positioning component 1 comes into a state of extending to the right side, so that the child safety seat is in a state of extending to the right side. Therefore, this embodiment of the present application can realize the effect that the child safety seat is rotated to come into a state of extending to the right side, thereby making it convenient to carry the child in or out the vehicle from the right side and improving the use and operation experience and satisfaction for the child safety seat. In an embodiment of the present application, as shown in FIGS. 33 and 34, corresponding to the first positioning component 1 being in a state of extending to the left side, the first sliding member 121a is arranged on the lower surface of the first positioning component 1 and located at a position corresponding to the leftmost end namely the point a2 of the first track 21E7, and the second sliding member 121b is arranged on the lower surface of the first positioning component 1 and located at a position corresponding to the center point bl of the second track 22E7. Further, as shown in FIGS. 37 and 38, corresponding to the first positioning component 1 being in a state of extending to the right side, the first sliding member 121a is arranged on the lower surface of the first positioning component 1 and located at a position corresponding to the rightmost end namely the point a4 of the first track 21E7, and the second sliding member 121b is located at a position corresponding to the center point bl of the second track 22E7.

[0246] As shown in FIG. 37, the child safety seat is continuously rotated to drive the first sliding member 121a on the first positioning component 1 to continue to slide from the point a4 and slide along the first track 21E7 in a direction indicated by the arrow at the point a4, and at the same time, the second sliding member 121b is driven to slide from the center point bl of the second track 22E7 toward the rearmost end b2 of the second track 22E7. In this process, the first positioning component 1 gradually returns to the center point bl of the second track 22E7 while rotating. When the first sliding member 121a slides from the point a4 to the point al, namely, to the front intersection point al of the first track 21E7 and the second track 22E7, the second sliding member 121b slides to the rearmost end b2 of the second track 22E7. At this time, the first positioning component 1 returns to the center point bl of the second track 22E7, and the positioning assembly 100a is in the forward-facing sitting mode, as shown in FIG. 30 and FIG. 32. Therefore, through the positioning assembly 100a of the embodiment of the present application, the child safety seat can be further switched from the rear-facing sitting mode to the forward-facing sitting mode, thereby making it convenient to adjust the direction in which the child is seated and improving the comfort and safety of the child sitting in the child safety seat. At this point, the child safety seat completes a rotation cycle, and different functions are realized in different stages. The child safety seat can also be rotated in a direction opposite to the above rotation direction to realize corresponding functions in each stage, and the corresponding use process and the effects that can beachieved are the same as those described above respectively, which will not be repeatedly described in the present application.

[0247] In an embodiment of the present application, as shown in FIG. 30, the first track 21E7 may be an elliptical track centered at the center O of the second positioning component 2, and the line connecting the leftmost end a2 and the rightmost end a4 of the elliptical track is the major axis of the elliptical track. The second track 22E7 is a straight track located in the minor axis of the elliptical track, and extends to the outside of the elliptical track, and specifically, extends to the frontmost end b3 and the rearmost end b2, and intersects with the elliptical track at the front intersection point al and the rear intersection point a3.

[0248] In another embodiment of the present application, as shown in FIG. 39, the positioning assembly 100a includes a first positioning component 1 and a second positioning component 2. A first track 21E7 and a second track 22E7 are arranged on the second positioning component 2. The positions, shapes, and structures of the first track 21E7 and the second track 22E7 are the same as those in the embodiment of FIG. 30 above, which will not be described repeatedly herein in this application.

[0249] In this embodiment, the center point bl of the second track 22E7 coincides with the center point O of the second positioning component 2. In some other embodiments, the second track 22E7 may also extend forwards and backwards to the outside of the first track 21E7 along a direction parallel to the front-back center line Y of the second positioning component 2, that is, the center point bl of the second track 22E7 deviates from the center point O of the second positioning component 2.

[0250] As shown in FIG. 39 and FIG. 40, in the embodiment of the present application, correspondingly, a first sliding member 121a and a second sliding member 121b are provided on the first positioning component 1. The positions, where the first sliding member 121a and the second sliding member 121b on the first positioning component 1 are arranged, correspond to the structures and positions of the first track 21E7 and the second track 22E7 on the second positioning component 2. Specifically, corresponding to the positioning assembly 100a being in the forward-facing sitting mode (as shown in FIG. 41), the first sliding member 121a and the second sliding member 121b are arranged at positions as follows. The first sliding member 121a is arranged on the lower surface of the first positioning component 1 and located at a position corresponding to the rearmost end a3 of the first track 21E7, namely the rear intersection point a3 of the first track 21E7 and the second track 22E7. The second sliding member 121b is arranged on the lower surface of the first positioning component 1, and located at a position corresponding to the frontmost end b3 of the second track 22E7.

[0251] The embodiment of the present application will be illustrated by taking the positioning assembly 100a being in the forward-facing sitting mode (shown in FIG. 41) as an example. Referring to FIGS. 39- 41, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 121a on the first positioning component 1 is located at the position corresponding to the rear intersection point a3 of the first track 21E7 and the second track 22E7, and the second sliding member 121b is located at the position corresponding to a point between the center point bl and the frontmost end b3 of the second track 22E7. When the child safety seat is rotated to drive the first positioning component 1 of the positioning assembly to start rotating, the first sliding member 121a on the first positioning component 1 starts sliding from the point a3 and slides along the first track 21E7 in the direction indicated by an arrow at the point a3, and at the same time, the second sliding member 121b is driven to slide from the point b3 toward the center point bl of the second track 22E7 along the second track 22E7. In this process, the first positioning component 1 gradually draws back towards theright side while rotating. As shown in FIGS. 42 and 43, when the first sliding member 121a slides to the rightmost end namely the point a4 in the first track 21E7, the second sliding member 121b slides to the center point bl of the second track 22E7. At this time, the first positioning component 1 draws back towards the right side, so that the child safety seat is in a state of facing the left side and drawing back toward the right side. Therefore, this embodiment of the present application can realize the effect that the child safety seat is rotated to come into a state of facing the left side and drawing back towards the right side, so that when the child safety seat is installed on a left seat of the vehicle, the child safety seat can be prevented from hitting the left door when it is rotated to face the left side for use, and moreover, some space is reserved at the left side for the child to put feet, thereby improving the use and operation experience and the satisfaction for the child safety seat.

[0252] As shown in FIG. 42, the child safety seat is continuously rotated to drive the first sliding member 121a on the first positioning component 1 to continue to slide from the point a4 and slide along the first track 21E7 in a direction indicated by the arrow at the point a4, and at the same time, the second sliding member 121b is driven to slide from the point bl toward the rearmost end b2 of the second track 22E7 in a direction indicated by the arrow at the point bl . In this process, the first positioning component 1 gradually returns to the center point bl of the second track 22E7 while rotating. As shown in FIG. 44 and FIG. 45, when the first sliding member 121a slides from the point a4 to the point al, namely, to the front intersection point al of the first track 21E7 and the second track 22E7, the second sliding member 121b slides to the rearmost end b2 of the second track 22E7. At this time, the first positioning component 1 returns to the center point bl of the second track 22E7, and the positioning assembly 100a is in the rear-facing sitting mode. Therefore, through the positioning assembly 100a of the embodiment of the present application, the child safety seat can be further switched from the forward-facing sitting mode to the rear-facing sitting mode, thereby making it convenient to adjust the direction in which the child is seated, and improving the safety of the child sitting in the child safety seat

[0253] As shown in FIG. 44, the child safety seat is continuously rotated to drive the first sliding member 121a on the first positioning component 1 to continue to slide from the point al and slide along the first track 21E7 in a direction indicated by the arrow at the point al, and at the same time, the second sliding member 121b is driven to slide from the point b2 toward the center point bl of the second track 22E7 along the second track 22E7 in the direction indicated by an arrow at point b2. In this process, the first positioning component 1 gradually draws back towards the left side while rotating. As shown in FIG. 46 and FIG. 47, when the first sliding member 121a slides to the leftmost end namely the point a2 of the first track 21E7, the second sliding member 121b slides to the center point bl of the second track 22E7. At this time, the first positioning component 1 draws back towards the left side, so that the child safety seat is in a state of drawing back towards the left side. Therefore, this embodiment of the present application can realize the effect that the child safety seat faces the right side and draws back towards the left side while rotating, so that when the child safety seat is installed on a right seat of the vehicle, the child safety seat can be prevented from hitting the right door when it is rotated to face the right side for use, and moreover, some space is reserved at the right side for the child to put feet, thereby improving the use and operation experience and the satisfaction for the child safety seat. In an embodiment of the present application, as shown in FIGS. 42 and 43, corresponding to the first positioning component 1 being in a state of drawing back towards the right side, the first sliding member 121a is arranged on the lower surface of the first positioning component 1 and located at a position corresponding to the rightmost end a4 of the first track 21E7, and the second sliding member 121b is arranged on the lowersurface of the first positioning component 1 and located at a position corresponding to the center point bl of the second track 22E7. As shown in FIGS. 46 and 47, corresponding to the first positioning component 1 being in a state of drawing back towards the left side, the first sliding member 121a is arranged on the lower surface of the first positioning component 1 and located at a position corresponding to the leftmost end a2 of the first track 21E7, and the second sliding member 121b is arranged on the lower surface of the first positioning component 1 and located at a position corresponding to the center point bl of the second track 22E7.

[0254] As shown in FIG. 46, the child safety seat is continuously rotated to drive the first sliding member 121a on the first positioning component 1 to continue to slide from the point a2 and slide along the first track 21E7 in a direction indicated by the arrow at the point a2, and at the same time, the second sliding member 121b is driven to slide from the point bl toward the frontmost end b3 of the second track 22E7 in a direction indicated by the arrow at the point b 1. In this process, the first positioning component 1 gradually returns to the center point bl of the second track 22E7 while rotating. When the first sliding member 121a slides from the point a2 to the point a3, namely, to the rear intersection point a3 of the first track 21E7 and the second track 22E7, the second sliding member 121b slides to the frontmost end b3 of the second track 22E7. At this time, the first positioning component 1 returns to the center point bl of the second track 22E7, and the positioning assembly 100a is in the forward-facing sitting mode, as shown in FIG. 39 and FIG. 41. Therefore, through the positioning assembly 100a of the embodiment of the present application, the child safety seat can be further switched from the rear-facing sitting mode to the forward-facing sitting mode, thereby making it convenient to adjust the direction in which the child is seated and improving the safety of the child sitting in the child safety seat. At this point, the child safety seat completes a rotation cycle, and different functions are realized in different stages. The child safety seat can also be rotated in a direction opposite to the above rotation direction to realize corresponding functions in each stage, and the corresponding use process and the effects that can be achieved are the same as those described above respectively, which will not be repeatedly described in the present application.

[0255] In yet another embodiment of the present application, as shown in FIG. 48, the positioning assembly 100a includes a first positioning component 1 and a second positioning component 2. A first track 21E7 and a second track 22E7 are arranged on the second positioning component 2. The first track 21E7 is a circular track, and the circular track is configured to surround the center point O of the second positioning component 2. A distance between the leftmost end a2 and the rightmost end a4 of the first track 21E7 is greater than a distance between the frontmost end al and the rearmost end a3 of the first track 21E7. The second track 22E7 is a straight track, which extends along the front-rear direction of the second positioning component 2. Specifically, the second track 22E7 extends forwards and backwards from the center point O of the second positioning component 2 to the outside of the first track 21E7 along the front-back center line Y of the second positioning component 2, specifically, extends to the frontmost end b3 and the rearmost end b2, respectively, and intersects with the circular track at the front intersection point al (i.e., the frontmost end al of the circular track 21E7) and at the rear intersection point a3 (i.e., the rearmost end a3 of the circular track 21E7).

[0256] In this embodiment, the center point bl of the second track 22E7 coincides with the center point O of the second positioning component 2. In some other embodiments, the second track 22E7 may also extend forwards and backwards to the outside of the first track 21E7 along a direction parallel to thefront-back center line Y of the second positioning component 2, that is, the center point bl of the second track 22E7 deviates from the center point O of the second positioning component 2.

[0257] As shown in FIGS. 48 and 49, in this embodiment, correspondingly, a first sliding member 121a and a second sliding member 121b are arranged on the first positioning component 1. Optionally, the second sliding member 121b is arranged at the center point 0’ (e.g., the geometrical center) of the first positioning component 1, and the first sliding member 121a is arranged at the left portion of the first positioning component 1. The positions, where the first sliding member 121a and the second sliding member 121b on the first positioning component 1 are arranged, correspond to the structures and positions of the first track 21E7 and the second track 22E7 on the second positioning component 2. Specifically, corresponding to the positioning assembly 100a being in the forward-facing sitting mode (shown in FIG. 50) or in the rear-facing sitting mode (shown in FIG. 54), the first sliding member 121a and the second sliding member 121b are arranged at positions as follows. The first sliding member 121a is arranged on the lower surface of the first positioning component 1 and located at a position corresponding to the leftmost end a2 of the first track 21E7. The second sliding member 121b is arranged on the lower surface of the first positioning component 1 and located at a position corresponding to the center point bl of the second track 22E7.

[0258] The embodiment of the present application will be illustrated by taking the positioning assembly 100a being in the forward-facing sitting mode (shown in FIG. 50) as an example. Referring to FIGS. 48- 50, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 121a on the first positioning component 1 is located at the position corresponding to the leftmost end a2 of the first track 21E7, and the second sliding member 121b is located at the position corresponding to the center point bl of the second track 22E7. When the child safety seat is rotated to drive the first positioning component 1 of the positioning assembly to start rotating, the first sliding member 121a on the first positioning component 1 starts sliding from the point a2 and slides along the first track 21E7 in the direction indicated by the arrow at the point a2, and at the same time, the second sliding member 121b is driven to slide from the point b 1 toward the frontmost end b3 of the second track 22E7 along the second track 22E7 in the direction indicated by the arrow at the point bl . In this process, the first positioning component 1 gradually moves toward the front side while rotating. As shown in FIGS. 51 and 52, when the first sliding member 121a slides to the rearmost end namely the point a3 in the first track 21E7, the second sliding member 121b slides to the frontmost end b3 of the second track 22E7. At this time, the first positioning component 1 comes into a state of extending to the front side but facing the left side and, so that the child safety seat is in a state of extending to the front side but facing the left side, that is, the front portion of the first positioning component 1 is facing the left side, and the center of the first positioning component 1 is displaced toward the front side of the second positioning component 2 relative to the center of the second positioning component 2. Therefore, this embodiment of the present application can realize the effect that the child safety seat is rotated to come into a state of extending to the front side but facing the left side, thereby realizing a flexible adjustment for the position where the child is seated, improving the comfort of the child sitting in the child safety seat. For example, when the child safety seat is placed in a rear seat of a seven-seat vehicle, the vehicle door is close to the front side of the rear seat, and in this case, the child safety seat can be rotated to come into a state of facing the left door through this structure and extending to the front side, so as to be closer to the vehicle door, thus making it convenient to carry the child in or out from the right side, and improving the use and operation experience and satisfaction for the child safety seat.

[0259] As shown in FIG. 51, the child safety seat is continuously rotated to drive the first positioning component 1 to start rotating, driving the first sliding member 121a on the first positioning component 1 to slide from the point a3 and slide along the first track 21E7 in a direction indicated by the arrow at the point a3, and at the same time, the second sliding member 121b is driven to slide from the point b3 toward the center point bl of the second track 22E7 along the second track 22E7 in the direction indicated by the arrow at point b3. In this process, the first positioning component 1 gradually returns to the center point bl of the second track 22E7 while rotating. As shown in FIG. 53 and FIG. 54, when the first sliding member 121a slides to the rightmost point a4 of the first track 21E7, the second sliding member 121b slides to the center point bl of the second track 22E7. At this time, the first positioning component 1 returns to the center point bl of the second track 22E7, and the child safety seat is in a state of facing the rear side and returning to the center point bl of the second track 22E7 from the front side, namely, in the rear-facing sitting mode. Therefore, through the positioning assembly 100a of the embodiment of the present application, the child safety seat can be further switched from the forwardfacing sitting mode to the rear-facing sitting mode, thereby making it convenient to adjust the direction in which the child is seated and improving the safety of the child sitting in the child safety seat.

[0260] As shown in FIG. 53, the child safety seat is continuously rotated to drive the first sliding member 121a on the first positioning component 1 to continue to slide from the point a4 and slide along the first track 21E7 in a direction indicated by the arrow at the point a4, and at the same time, the second sliding member 121b is driven to slide from the point bl toward the rearmost end b2 of the second track 22E7 in a direction indicated by the arrow at the point bl . In this process, the first positioning component 1 gradually moves toward the rear side of the second positioning component 2 while rotating. As shown in FIG. 55 and FIG. 56, when the first sliding member 121a slides from the point a4 to the point al, namely, to the front intersection point al of the first track 21E7 and the second track 22E7, the second sliding member 121b slides to the rearmost end b2 of the second track 22E7. At this time, the first positioning component 1 comes into a state of extending to the rear side but facing the right side, so that the child safety seat is in a state of extending to the rear side but facing the right side. Therefore, this embodiment of the present application can realize the effect that the child safety seat is rotated to come into a state of extending to the rear side but facing the right side, thereby realizing a flexible adjustment for the position where the child is seated, improving the comfort of the child sitting in the child safety seat, and further making it convenient to carry the child in or out the vehicle from the right side, and improving the use and operation experience and satisfaction for the child safety seat.

[0261] As shown in FIG. 55, the child safety seat is continuously rotated to drive the first sliding member 121a on the first positioning component 1 to slide from the point al and slide along the first track 21E7 in a direction indicated by the arrow at the point al, and at the same time, the second sliding member 121b is driven to slide from the point b2 toward the center point bl of the second track 22E7 along the second track 22E7. In this process, the first positioning component 1 faces the front side and gradually returns to the center point bl of the second track 22E7 while rotating. As shown in FIG. 48 and FIG. 50, when the first sliding member 121a slides to the leftmost point a2 of the first track 21E7, the second sliding member 121b slides to the center point bl of the second track 22E7. At this time, the first positioning component 1 returns to the center point bl of the second track 22E7, and the child safety seat is in a state of facing the front side and returning to the center point bl of the second track 22E7 from the rear side, namely, in the forward-facing sitting mode. Therefore, through the positioning assembly 100a of the embodiment of the present application, the child safety seat can be further switchedfrom the rear-facing sitting mode to the forward-facing sitting mode, thereby making it convenient to adjust the direction in which the child is seated and improving the safety of the child sitting in the child safety seat. At this point, the child safety seat completes a rotation cycle, and different functions are realized in different stages. The child safety seat can also be rotated in a direction opposite to the above rotation direction to realize corresponding functions in each stage, and the corresponding use process and the effects that can be achieved are the same as those described above respectively, which will not be repeatedly described in the present application.

[0262] In other embodiment of the present application, corresponding to the positioning assembly 100a being in the rear-facing sitting mode, the first sliding member 121a is disposed on the lower surface of the first positioning component 1 and located at a position corresponding to the leftmost end a2 of the first track 21E7, and the second sliding member 121b is disposed on the lower surface of the first positioning component 1 and located at a position corresponding to the center point bl of the second track 22E7. That is, in this embodiment, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 121a is disposed on the lower surface of the first positioning component 1 and located at a position corresponding to the rightmost end a4 of the first track 21E7, and the second sliding member 121b is disposed on the lower surface of the first positioning component 1 and located at a position corresponding to the center point bl of the second track 22E7. The working process of the positioning assembly 100a of this embodiment is similar to the above process, which will not be described repeatedly herein, but differs from the above process in that: in the working process of this embodiment, corresponding to the positioning assembly 100a being in the rear-facing sitting mode, first, the effect that the child safety seat being in a state of extending to the front side but facing the right side can be achieved, that is, the front portion of the first positioning component 1 is facing the right side, and the center of the first positioning component 1 is displaced toward the front side of the second positioning component 2 relative to the center of the second positioning component 2; then the child safety seat can return to the center point bl of the second track 22E7 and switched to be in a forward-facing sitting mode; further the child safety seat can come into a state of extending to the rear side but facing the left side, that is, the front portion of the first positioning component 1 is facing the left side, and the center of the first positioning component 1 is displaced toward the rear side of the second positioning component 2 relative to the center of the second positioning component 2; and finally, the child safety seat can come into a state of facing the rear side and returning to the center point bl of the second track 22E7 from the front side, that is, the child safety seat returns to the original rearfacing sitting mode.

[0263] In some embodiments of the present application, the first sliding member 121a and the second sliding member 121b may also be arranged on the second positioning component 2, and correspondingly, the first track and the second track are arranged on the first positioning component 1. Specific implementations are further described in the present application hereinafter.

[0264] A fifth aspect of the present application provides a positioning assembly 100a, as shown in FIGS. 57-59 and FIG. 63, the positioning assembly 100a includes a first positioning component 1 and a second positioning component 2. A first track 121E1 and a second track 122E1 are arranged on the first positioning component 1, and a first sliding member 221a and a second sliding member 221b are arranged on the second positioning component 2. Further, the first sliding member 221a and the first track 121E1 are configured to be slidable relative to each other, and the second sliding member 221b and the second track 122E1 are configured to be slidable relative to each other. The first track 121 Eland the second track 122E1 are arranged on the lower surface of the first positioning component 1, and may also be configured to penetrate through the upper and lower surfaces of the first positioning component 1.

[0265] Specifically, In an embodiment of the present application, as shown in FIG. 57 and FIG. 59, the first track 12 IE 1 is a circular track, and the first track 121E1 is configured to surround a center point O’ of the first positioning component 1, and a distance between the frontmost end A4 ( located at the front portion of the first positioning component 1) and the rearmost end Ai ( located at the rear portion of the first positioning component 1) of the first track 121E1 is greater than a distance between the leftmost end A3 ( located at the left portion of the first positioning component 1) and the rightmost end A2 ( located at the right portion of the first positioning component 1) of the first track 121E1. The second track 122E1 is a straight track and is configured to extend along the left-right center line x from the center point O’ of the first positioning component 1 to the left and right and reach the outside of the first track 121E1, specifically, extend to the leftmost end B2 and the rightmost end B3 of the second track 122E1 respectively. The left-right center line x of the first positioning component 1 refers to a center line passing through the center O’ of the first positioning component 1 and extending to the leftmost portion and the rightmost portion. The front-back center line y of the first positioning component 1 refers to a center line passing through the center O’ of the first positioning component 1 and extending to the frontmost portion and the rearmost portion of the first positioning component 1.

[0266] In this embodiment, a center point Bi of the second track 122E1 coincides with the center point O’ of the first positioning component 1, as shown in FIG. 59. In some other embodiments, the second track 122E1 may also be configured to extend to the left and to the right along a direction parallel to the left-right center line x of the first positioning component 1 and reach the outside of the first track 121E1 specifically, that is, the center point Bi of the second track 122E1 deviates from the center point O’ of the first positioning component 1.

[0267] The first track 121E1 is an elliptical track centered at the center O’ of the first positioning component 1, and a line connecting the frontmost end A4 and the rearmost end Ai of the first track 121E1 is the major axis of the elliptical track. The second track 122E1 is a straight track, located in the minor axis of the elliptical track, and extends outward from the elliptical track.

[0268] As shown in FIG. 58, in this embodiment, correspondingly, the first sliding member 221a and the second sliding member 221b are arranged on the second positioning component 2. The positions, where the first sliding member 221a and the second sliding member 221b are arranged on the second positioning component 2, correspond to the structures and positions of the first track 121E1 and the second track 122E1 on the first positioning component 1. Specifically, as shown in FIG. 58 and FIG. 60, corresponding to the positioning assembly 100a being in the forward-facing sitting mode (as shown in FIG. 61), the first sliding member 221a and the second sliding member 221b are arranged at positions as follows. The first sliding member 221a is arranged on the upper surface of the second positioning component 2, and is located at a position corresponding to the leftmost end A3 of the first track 121E1, namely, a left intersection point A3 of the first track 121E1 and the second track 122E1. The second sliding member 221b is arranged on the upper surface of the second positioning component 2, and is located at a position corresponding to the rightmost end B3 of the second track 122E1.

[0269] The embodiment of the present application will be illustrated by taking the positioning assembly 100a being in the forward-facing sitting mode (shown in FIG. 61) as an example. Referring to FIG. 57, FIG. 60 and FIG. 61, corresponding to the positioning assembly 100a being in the forward-facing sittingmode, the first sliding member 221a on the second positioning component 2 is located at the position corresponding to the leftmost end A3 of the first track 121E1, and the second sliding member 221b is located at a position corresponding to the rightmost end B3 of the second track 122E1. When the child safety seat is rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, the rearmost end Ai of the first track 121E1 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point Ai, and at the same time, the center point Bi of the second track 122E1 is driven to move toward the second sliding member 221b along a direction indicated by an arrow at the point Bi. In this process, the first positioning component 1 gradually moves toward the right side while rotating. As shown in FIGS. 62 and 63, when the rearmost end Ai of the first track 121E1 moves to the first sliding member 221a, the center point Bi of the second track 122E1 moves to the second sliding member 221b, and the first positioning component 1 comes into a state of extending to the right side, so that the child safety seat is in a state of extending to the right side. Therefore, this embodiment of the present application can realize the effect that the child safety seat is rotated to come into a state of extending to the right side, thereby making it convenient to carry the child in or out the vehicle from a vehicle door at the right side and improving the use and operation experience and satisfaction for the child safety seat. In an embodiment of the present application, as shown in FIG. 62, corresponding to the first positioning component 1 being in a state of extending to the right side, the first sliding member 221a is arranged on the upper surface of the second positioning component 2, and the rearmost end Ai of the first track 121E1 is located at a position corresponding to the first sliding member 221a. The second sliding member 221b is arranged on the upper surface of the second positioning component 2, and the center point Bi of the second track 122E1 is located at a position corresponding to the second sliding member 221b.

[0270] As shown in FIG. 62, the child safety seat is continuously rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, so that the rightmost end A2 of the first track 121E1 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point A2, and at the same time, the leftmost end B2 of the second track 122E1 is driven to move toward the second sliding member 221b in a direction indicated by an arrow at the point B2. In this process, the first positioning component 1 gradually returns to the center of the second positioning component 2 while rotating. As shown in FIG. 64 and FIG. 65, when the rightmost end A2 of the first track 121E1 moves to the first sliding member 221a, the leftmost end B2 of the second track 122E1 moves to the second sliding member 221b, and at this time, the first positioning component 1 faces backward and returns to the center of the second positioning component 2, so that the child safety seat is in the rear-facing sitting mode. Therefore, this embodiment of the present application can further realize the effect that the child safety seat is switched from the forward-facing sitting mode to the rear-facing sitting mode, thereby making it convenient to adjust the direction in which the child is seated and improving the safety of the child sitting in the child safety seat.

[0271] As shown in FIG. 64, the child safety seat is continuously rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, so that the frontmost end A4 of the first track 121E1 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point A4, and at the same time, the center point Bi of the second track 122E1 is driven to move toward the second slidingmember 221b along a direction indicated by an arrow at the point Bi. In this process, the first positioning component 1 gradually draws back towards the right side while rotating. As shown in FIG. 66 and FIG. 67, when the frontmost end A4 of the first track 121E1 moves to the first sliding member 221a, the center point Bi of the second track 122E1 moves to the second sliding member 221b, and the first positioning component 1 draws back towards the right side, so that the child safety seat is in a state of drawing back towards the right side. This embodiment of the present application can realize the effect that the child safety seat is rotated and draws back towards the right side, so that when the child safety seat is installed on a left seat of the vehicle, the child safety seat can be prevented from hitting the left door when it is rotated to face the left side for use, and moreover, some space is reserved at the left side for the child to put feet, thereby improving the use and operation experience and the satisfaction for the child safety seat. In an embodiment of the present application, as shown in FIG. 66, corresponding to the first positioning component 1 being in a state of drawing back towards the right side, the first sliding member 221a is arranged on the upper surface of the second positioning component 2, and the frontmost end A4 of the first track 121E1 is located at the position corresponding to the first sliding member 221a. The second sliding member 221b is arranged on the upper surface of the second positioning component 2, and the center point Bi of the second track 122E1 is located at the position corresponding to the second sliding member 221b.

[0272] As shown in FIG. 66, the child safety seat is continuously rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, so that the leftmost end A3 of the first track 121E1 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point A3, and at the same time, the rightmost end B3 of the second track 122E1 is driven to move toward the second sliding member 221b along a direction indicated by an arrow at the point B3. In this process, the first positioning component 1 gradually returns to the center of the second positioning component 2 while rotating. When the leftmost end A3 of the first track 121E1 moves to the first sliding member 221a, the rightmost end B3 of the second track 122E1 moves to the second sliding member 221b. At this time, the first positioning component 1 faces forward and returns to the center of the second positioning component 2, so that the child safety seat is in the forward-facing sitting mode, as shown in FIG. 60 and FIG. 61. Therefore, this embodiment of the present application can further realize the effect that the child safety seat is switched from the rear-facing sitting mode to the forward-facing sitting mode, thereby making it convenient to adjust the direction in which the child is seated and improving the safety of the child sitting in the child safety seat. At this point, the child safety seat completes a rotation cycle, and different functions are realized in different stages. The child safety seat can also be rotated in a direction opposite to the above rotation direction to realize corresponding functions in each stage, and the corresponding use process and the effects that can be achieved are the same as those described above respectively, which will not be repeatedly described in the present application.

[0273] In another embodiment of the present application, as shown in FIG. 69, the positioning assembly 100a includes a first positioning component 1 and a second positioning component 2. A first track 121E1 and a second track 122E1 are arranged on the first positioning component 1. The positions, shapes and structures of the first track 121E1 and the second track 122E1 are the same as those of the embodiment described above and shown in FIG. 57, which will not be described repeatedly in the present application herein.

[0274] As shown in FIG. 68, in this embodiment, correspondingly, a first sliding member 221a and a second sliding member 221b are arranged on the second positioning component 2. The positions, where the first sliding member 221a and the second sliding member 221b are arranged on the second positioning component 2, correspond to the structures and positions of the first track 121E1 and the second track 122E1 on the first positioning component 1. Specifically, as shown in FIG. 68 and FIG. 69, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 221a is arranged on the upper surface of the second positioning component 2, and located at a position corresponding to the rightmost end A2 of the first track 121E1, namely, a right intersection point A2 of the first track 121E1 and the second track 122E1. The second sliding member 221b is arranged on the upper surface of the second positioning component 2 and is located at a position corresponding to the leftmost end B2 of the second track 122E1.

[0275] The embodiment of the present application will be illustrated by taking the positioning assembly 100a being in the forward-facing sitting mode (shown in FIG. 61) as an example. Referring to FIG. 61 and FIG. 69, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 221a on the second positioning component 2 is located at the position corresponding to the rightmost end A2 of the first track 121E1, and the second sliding member 221b is located at a position corresponding to the leftmost end B2 of the second track 122E1. When the child safety seat is rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, the frontmost end A4 of the first track 121E1 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point A4, and at the same time, the center point Bi of the second track 122E1 is driven to move toward the second sliding member 221b along a direction indicated by an arrow at the point Bi. In this process, the first positioning component 1 gradually draws back towards the left side while rotating. As shown in FIG. 70, when the frontmost end A4 of the first track 121E1 moves to the first sliding member 221a, the center point Bi of the second track 122E1 moves to the second sliding member 221b, and the first positioning component 1 draws back towards the left side, so that the child safety seat is in a state of drawing back towards the left side. Therefore, this embodiment of the present application can realize the effect that the child safety seat draws back towards the left side while rotating, so that when the child safety seat is installed on a right seat of the vehicle, the child safety seat can be prevented from hitting the right door when it is rotated to face the right side for use, and moreover, some space is reserved at the right side for the child to put feet, thereby improving the use and operation experience and the satisfaction for the child safety seat. In an embodiment of the present application, as shown in FIG. 70, corresponding to the first positioning component 1 being in a state of drawing back towards the left side, the first sliding member 221a is arranged on the upper surface of the second positioning component 2, and the frontmost end A4 of the first track 121E1 is located at a position corresponding to the first sliding member 221a. The second sliding member 221b is arranged on the upper surface of the second positioning component 2, and the center point Bi of the second track 122E1 is located at the position corresponding to the second sliding member 221b.

[0276] As shown in FIG. 70, the child safety seat is continuously rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, so that the leftmost end A3 of the first track 121E1 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point A3, and at the same time, the rightmost end B3 of the second track 122E1 is driven to move toward the second slidingmember 221b in a direction indicated by an arrow at the point B3. In this process, the first positioning component 1 gradually returns to the center of the second positioning component 2 while rotating. As shown in FIG. 71, when the leftmost end A3 of the first track 121E1 moves to the first sliding member 221a, the rightmost end B3 of the second track 122E1 moves to the second sliding member 221b, and at this time, the first positioning component 1 faces backward and returns to the center of the second positioning component 2, so that the child safety seat is in the rear-facing sitting mode. Therefore, this embodiment of the present application can further realize the effect that the child safety seat is switched from the forward-facing sitting mode to the rear-facing sitting mode, thereby making it convenient to adjust the direction in which the child is seated and improving the safety of the child sitting in the child safety seat.

[0277] As shown in FIG. 71, the child safety seat is continuously rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, so that the rearmost end Ai of the first track 121E1 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point Ai, and at the same time, the center point Bi of the second track 122E1 is driven to move toward the second sliding member 221b along a direction indicated by an arrow at the point Bi. In this process, the first positioning component 1 gradually moves toward the left side while rotating. As shown in FIG. 72, when the rearmost end Ai of the first track 121E1 moves to the first sliding member 221a, the center point Bi of the second track 122E1 moves to the second sliding member 221b, and the first positioning component 1 comes into a state of extending to the left side, so that the child safety seat is in a state of extending to the left side. This embodiment of the present application can realize the effect that the child safety seat is rotated to come into a state of extending to the left side, thereby making it convenient to carry the child in or out the vehicle from a vehicle door at the left side and improving the use and operation experience and satisfaction for the child safety seat. In an embodiment of the present application, as shown in FIG. 72, corresponding to the first positioning component 1 being in a state of extending to the left side, the first sliding member 221a is arranged on the upper surface of the second positioning component 2, and the rearmost end Ai of the first track 121E1 is located at a position corresponding to the first sliding member 221a. The second sliding member 221b is arranged on the upper surface of the second positioning component 2, and the center point Bi of the second track 122E1 is located at the position corresponding to the second sliding member 221b.

[0278] As shown in FIG. 72, the child safety seat is continuously rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, so that the rightmost end A2 of the first track 121E1 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point A2, and at the same time, the leftmost end B2 of the second track 122E1 is driven to move toward the second sliding member 221b along a direction indicated by an arrow at the point B2. In this process, the first positioning component 1 gradually returns to the center of the second positioning component 2 while rotating. When the rightmost end A2 of the first track 121E1 moves to the first sliding member 221a, the leftmost end B2 of the second track 122E1 moves to the second sliding member 221b. At this time, the first positioning component 1 faces forward and returns to the center of the second positioning component 2, so that the child safety seat is in the forward-facing sitting mode, as shown in FIG. 69. Therefore, this embodiment of the present application can further realize the effect that the child safety seat is switched from the rear-facing sitting mode to the forward-facing sitting mode, thereby making it convenient to adjust thedirection in which the child is seated and improving the safety of the child sitting in the child safety seat. At this point, the child safety seat completes a rotation cycle, and different functions are realized in different stages. The child safety seat can also be rotated in a direction opposite to the above rotation direction to realize corresponding functions in each stage, and the corresponding use process and the effects that can be achieved are the same as those described above respectively, which will not be repeatedly described in the present application.

[0279] In yet another embodiment of the present application, as shown in FIG. 74, the positioning assembly 100a includes a first positioning component 1 and a second positioning component 2. A first track 121E1 and a second track 122E1 are arranged on the first positioning component 1. The positions, shapes and structures of the first track 121E1 and the second track 122E1 are the same as those in the embodiments of FIG. 57 or FIG. 69, which will not be described repeatedly in the present application herein.

[0280] As shown in FIG. 73, in this embodiment, correspondingly, the first sliding member 221a and the second sliding member 221b are arranged on the second positioning component 2. The positions, where the first sliding member 221a and the second sliding member 221b are arranged on the second positioning component 2, correspond to the structures and positions of the first track 121E1 and the second track 122E1 on the first positioning component 1. Specifically, as shown in FIG. 73 and FIG. 74, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 221a is arranged on the upper surface of the second positioning component 2 and located at a position corresponding to the rearmost end Ai of the first track 121E1, and the second sliding member 221b is arranged on the upper surface of the second positioning component 2 and located at a position corresponding to the center point Bi of the second track 122E1.

[0281] The embodiment of the present application will be illustrated by taking the positioning assembly 100a being in the forward-facing sitting mode (shown in FIG. 61) as an example. Referring to FIG. 61 and FIG. 74, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 221a on the second positioning component 2 is located at the position corresponding to the rearmost end Ai of the first track 121E1, and the second sliding member 221b is located at a position corresponding to the center point Bi of the second track 122E1. When the child safety seat is rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, the rightmost end A2 of the first track 121E1 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point A2, and at the same time, the leftmost end B2 of the second track 122E1 is driven to move toward the second sliding member 221b along a direction indicated by an arrow at the point B2. In this process, the first positioning component 1 is rotated to come into a state of facing the right side and extending to the rear side. As shown in FIG. 75, when the rightmost end A2 of the first track 121E1 moves to the first sliding member 221a, the leftmost end B2 of the second track 122E1 moves to the second sliding member 221b, and the first positioning component 1 comes into a state of extending to the rear side but facing the right side, so that the child safety seat is in a state of extending to the rear side but facing the right side. Therefore, this embodiment of the present application can realize a flexible adjustment for the position where the child is seated, improving the comfort of the child sitting in the child safety seat, and further making it convenient to carry the child in or out the vehicle from the right side, and improving the use and operation experience and satisfaction for the child safety seat.

[0282] As shown in FIG. 75, the child safety seat is continuously rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, so that the frontmost end A4 of the first track 121E1 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point A4, and at the same time, the center point Bi of the second track 122E1 is driven to move toward the second sliding member 221b in a direction indicated by an arrow at the point Bi. In this process, the first positioning component 1 gradually returns to the center of the second positioning component 2 while rotating. As shown in FIG. 76, when the frontmost end A4 of the first track 121E1 moves to the first sliding member 221a, the center point Bi of the second track 122E1 moves to the second sliding member 221b, and at this time, the first positioning component 1 faces the rear side and returns to the center of the second positioning component 2, so that the child safety seat is in the rear-facing sitting mode. Therefore, this embodiment of the present application can further realize the effect that the child safety seat is switched from the forward-facing sitting mode to the rear-facing sitting mode, thereby making it convenient to adjust the direction in which the child is seated and improving the safety of the child sitting in the child safety seat.

[0283] As shown in FIG. 76, the child safety seat is continuously rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, so that the leftmost end A3 of the first track 121E1 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point A3, and at the same time, the rightmost end B3 of the second track 122E1 is driven to move toward the second sliding member 221b along a direction indicated by an arrow at the point B3. In this process, the first positioning component 1 is rotated to come into a state of facing the left side and extending to the rear side. As shown in FIG. 77, when the leftmost end A3 of the first track 121E1 moves to the first sliding member 221a, the rightmost end B3 of the second track 122E1 moves to the second sliding member 221b, and the first positioning component 1 comes into a state of facing the left side and extending to the rear side, so that the child safety seat is in a state of extending to the rear side but facing the left side. Therefore, this embodiment of the present application can realize a flexible adjustment for the position where the child is seated, improving the comfort of the child sitting in the child safety seat, and further making it convenient to carry the child in or out the vehicle from the left side, and improving the use and operation experience and satisfaction for the child safety seat.

[0284] As shown in FIG. 77, the child safety seat is continuously rotated to drive the rearmost end Ai of the first track 121E1 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point Ai, and at the same time, the center point Bi of the second track 122E1 is driven to move toward the second sliding member 221b along a direction indicated by an arrow at the point Bi. In this process, the first positioning component 1 gradually returns to the center of the second positioning component 2 while rotating. As shown in FIG. 74, when the rearmost end Ai of the first track 121E1 moves to the first sliding member 221a, the center point Bi of the second track 122E1 moves to the second sliding member 221b. At this time, the first positioning component 1 is in the forward-facing sitting mode, so that the child safety seat is in the forward-facing sitting mode. Therefore, this embodiment of the present application can further realize the effect that the child safety seat is switched from the rear-facing sitting mode to the forward-facing sitting mode, thereby making it convenient to adjust the direction in which the child is seated and improving the safety of the child sitting in the child safety seat. At this point, the child safety seat completes a rotation cycle, and differentfunctions are realized in different stages. The child safety seat can also be rotated in a direction opposite to the above rotation direction to realize corresponding functions in each stage, and the corresponding use process and the effects that can be achieved are the same as those described above respectively, which will not be repeatedly described in the present application.

[0285] In other embodiment of the present application is similar to the embodiments of FIG. 73 and FIG. 74, except that, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 221a is arranged on the upper surface of the second positioning component 2 and located at a position corresponding to the frontmost end A4 of the first track 121E1. And the working process of the positioning assembly 100a of this embodiment is similar to the above process, which will not be described repeatedly herein. The working process of this embodiment differs from the above process in that the child safety seat being in a state of extending to the front side can be realized. Specifically, in the working process of this embodiment, it can be realized that, first, the child safety seat is in a state of facing the right side and extending to the front side, then the child safety seat can return to the center point Bi of the second track 122E1 to come into the rear-facing sitting mode, and then the child safety seat can come into a state of extending to the front side but facing the left side, and finally, the child safety seat can face the front side and return to the center point Bi of the second track 122E1, that is, the child safety seat returns to the original forward-facing sitting mode.

[0286] A sixth aspect of the present application provides a positioning assembly 100a. As shown in FIGS. 78 and 80, the positioning assembly 100a includes a first positioning component 1 and a second positioning component 2. A first track 121E2 and a second track 122E2 are arranged on the first positioning component 1, and a first sliding member 221a and a second sliding member 221b are arranged on the second positioning component 2. The first track 121E2 is a circular track, the first track 121E2 is configured to surround the center point O’ of the first positioning component 1, and a distance between the leftmost end a2 (located at the left portion of the first positioning component 1) and the rightmost end as (located at the right portion of the first positioning component 1) of the first track 121E2 is greater than a distance between the frontmost end a4 (located at the front portion of the first positioning component 1) and the rearmost end ai (located at the rear portion of the first positioning component 1) of the first track 121E2. The second track 122E2 is a straight track, extending forwards and backwards along the front-back center line y from the center point O’ of the first positioning component Ito the outside of the first track 121E2, specifically, reaches the frontmost end 62 and the rearmost end ba of the second track 122E2, respectively.

[0287] In this embodiment, the center point bi of the second track 122E2 coincides with the center point O’ of the first positioning component 1. In some other embodiments, the second track 122E2 may also extend forwards and backwards in the direction parallel to the front-back center line y of the first positioning component 1 and reach the outside of the first track 121E2, respectively, that is, the center point bi of the second track 122E2 deviates from the center point O’ of the first positioning component 1.

[0288] In some embodiments of the present application, the first track 121E2 is an elliptical track centered on the center O’ of the first positioning component 1, and the line connecting the leftmost end a2 and the rightmost end as of the first track 121E2 is the major axis of the elliptical track. The second track 122E2 is a straight track, located in the minor axis of the elliptical track, and extending to the outside of the elliptical track respectively.

[0289] In this embodiment, correspondingly, a first sliding member 221a and a second sliding member 221b are arranged on the second positioning component 2. The positions, where the first sliding member 221a and the second sliding member 221b are arranged on the second positioning component 2, correspond to the structures and positions of the first track 121E2 and the second track 122E2 on the first positioning component 1. Specifically, as shown in FIGS. 79 and 81, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the positions, where the first sliding member 221a and the second sliding member 221b are arranged, are as follows. The first sliding member 221a is arranged on the upper surface of the second positioning component 2 and located at a position corresponding to the leftmost end a2 of the first track 121E2, and the second sliding member 221b is arranged on the upper surface of the second positioning component 2 and located at a position corresponding to the center point bi of the second track 122E2.

[0290] The embodiment of the present application will be illustrated by taking the positioning assembly 100a being in the forward-facing sitting mode (shown in FIG. 61 and FIG. 81) as an example. Referring to FIG. 81, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 221a is arranged on the upper surface of the second positioning component 2 and located at the position corresponding to the leftmost end a2 of the first track 121E2, and the second sliding member 221b is arranged on the upper surface of the second positioning component 2 and located at a position corresponding to the center point bi of the second track 122E2. When the child safety seat is rotated to drive the first positioning component 1 of the positioning assembly 100a to start rotating relative to the second positioning component 2, the rearmost end ai of the first track 121E2 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point ai, and at the same time, the frontmost end b2 of the second track 122E2 is driven to move toward the second sliding member 221b along a direction indicated by an arrow at the point b2. In this process, the first positioning component 1 gradually draws back towards the left side while rotating. As shown in FIG. 82, when the rearmost end ai of the first track 121E2 moves to the first sliding member 221a, the frontmost end b2 of the second track 122E2 moves to the second sliding member 221b, and in this process, the first positioning component 1 draws back towards the left side, so that the child safety seat is in a state of drawing back towards the left side. This embodiment of the present application can realize the effect that the child safety seat draws back towards the left side while rotating, so that when the child safety seat is installed on a right seat of the vehicle, the child safety seat can be prevented from hitting the right door when it is rotated to face the right side for use, and moreover, some space is reserved at the right side for the child to put feet, thereby improving the use and operation experience and the satisfaction for the child safety seat. In an embodiment of the present application, as shown in FIG. 82, corresponding to the first positioning component 1 being in a state of drawing back towards the left side, the first sliding member 221a is arranged on the upper surface of the second positioning component 2, and the rearmost end ai of the first track 121E2 is located at a position corresponding to the first sliding member 221a. The second sliding member 221b is arranged on the upper surface of the second positioning component 2, and the frontmost end b2 of the second track 122E2 is located at the position corresponding to the second sliding member 221b.

[0291] As shown in FIG. 82, the child safety seat is continuously rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, so that the rightmost end as of the first track 121E2 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point as. and at the sametime, the center point bi of the second track 122E2 is driven to move toward the second sliding member 221b in a direction indicated by an arrow at the point bi. In this process, the first positioning component 1 gradually returns to the center of the second positioning component 2 while rotating. As shown in FIG. 83, when the rightmost end as of the first track 121E2 moves to the first sliding member 221a, the center point bi of the second track 122E2 moves to the second sliding member 221b, and at this time, the first positioning component 1 faces backward and returns to the center of the second positioning component 2, so that the child safety seat is in the rear-facing sitting mode. Therefore, this embodiment of the present application can further realize the effect that the child safety seat is switched from the forward-facing sitting mode to the rear-facing sitting mode, thereby making it convenient to adjust the direction in which the child is seated and improving the safety of the child sitting in the child safety seat.

[0292] As shown in FIG. 83, the child safety seat is continuously rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, so that the frontmost end a4 of the first track 121E2 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point a4, and at the same time, the rearmost end ba of the second track 122E2 is driven to move toward the second sliding member 221b along a direction indicated by an arrow at the point ba. In this process, the first positioning component 1 gradually moves toward the left side while rotating. As shown in FIG. 84, when the frontmost end a4 of the first track 121E2 moves to the first sliding member 221a, the rearmost end ba of the second track 122E2 moves to the second sliding member 221b, and at this time, the first positioning component 1 come into a state of extending to the left side, so that the child safety seat is in a state of extending to the left side. Therefore, this embodiment of the present application can realize the effect that the child safety seat is rotated to come into a state of extending to the left side, thereby making it convenient to carry the child in or out the vehicle from a vehicle door at the left side, and improving the use and operation experience and satisfaction for the child safety seat. In an embodiment of the present application, as shown in FIG. 84, corresponding to the first positioning component 1 being in a state of extending to the left side, the first sliding member 221a is arranged on the upper surface of the second positioning component 2, and the frontmost end a4 of the first track 121E2 is located at a position corresponding to the first sliding member 221a. The second sliding member 221b is arranged on the upper surface of the second positioning component 2, and the rearmost end ba of the second track 122E2 is located at the position corresponding to the second sliding member 221b.

[0293] As shown in FIG. 84, the child safety seat is continuously rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, so that the leftmost end a2 of the first track 121E2 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point a2, and at the same time, the center point bi of the second track 122E2 is driven to move toward the second sliding member 221b along a direction indicated by an arrow at the point bi. In this process, the first positioning component 1 gradually returns to the center of the second positioning component 2 while rotating. As shown in FIG. 81, when the leftmost end a2 of the first track 121E2 moves to the first sliding member 221a, the center point bi of the second track 122E2 moves to the second sliding member 221b. At this time, the first positioning component 1 faces the front side and returns to the center of the second positioning component 2, so that the child safety seat is in the forward-facing sitting mode. Therefore, this embodiment of the present application can further realize the effect that the child safety seat is switched from the rear-facing sitting mode to the forward-facing sitting mode, thereby making itconvenient to adjust the direction in which the child is seated and improving the safety of the child sitting in the child safety seat. At this point, the child safety seat completes a rotation cycle, and different functions are realized in different stages. The child safety seat can also be rotated in a direction opposite to the above rotation direction to realize corresponding functions in each stage, and the corresponding use process and the effects that can be achieved are the same as those described above respectively, which will not be repeatedly described in the present application.

[0294] In another embodiment of the present application, as shown in FIG. 86, the positioning assembly 100a includes a first positioning component 1 and a second positioning component 2. A first track 121E2 and a second track 122E2 are arranged on the first positioning component 1. The positions, shapes and structures of the first track 121E 2 and the second track 122E 2 are the same as those in the embodiments of FIG. 78 and FIG. 80 above, which will not be described repeatedly in the present application herein.

[0295] In this embodiment, correspondingly, the first sliding member 221a and the second sliding member 221b are arranged on the second positioning component 2. The positions, where the first sliding member 221a and the second sliding member 221b are arranged on the second positioning component 2, correspond to the structures and positions of the first track 121E1 and the second track 122E1 on the first positioning component 1. Specifically, as shown in FIGS. 85 and 86, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 221a is arranged on the upper surface of the second positioning component 2 and located at a position corresponding to the rightmost end as of the first track 121E2, and the second sliding member 221b is arranged on the upper surface of the second positioning component 2 and located at a position corresponding to the center point bi of the second track 122E2.

[0296] The embodiment of the present application will be illustrated by taking the positioning assembly 100a being in the forward-facing sitting mode (shown in FIG. 63 and FIG. 86) as an example. Referring to FIG. 86, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the first sliding member 221a is arranged on the upper surface of the second positioning component 2 and located at the position corresponding to the rightmost end as of the first track 121E2, and the second sliding member 221b is arranged on the upper surface of the second positioning component 2 and located at a position corresponding to the center point bi of the second track 122E2. When the child safety seat is rotated to drive the first positioning component 1 of the positioning assembly 100a to start rotating relative to the second positioning component 2, the frontmost end a4 of the first track 121E2 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point a4, and at the same time, the rearmost end ba of the second track 122E2 is driven to move toward the second sliding member 221b along a direction indicated by an arrow at the point ba. In this process, the first positioning component 1 gradually moves toward the right side while rotating. As shown in FIG. 87, when the frontmost end a4 of the first track 121E2 moves to the first sliding member 221a, the rearmost end ba of the second track 122E2 moves to the second sliding member 221b, and at this time, the first positioning component 1 comes into a state of extending to the right side, so that the child safety seat is in a state of extending to the right side. Therefore, this embodiment of the present application can further realize the effect that the child safety seat is rotated to come into a state of extending to the right side, thereby making it convenient to carry the child in or out the vehicle from a vehicle door at the right side and improving the use and operation experience and satisfaction for the child safety seat. In an embodiment of the present application, as shown in FIG. 87, corresponding tothe first positioning component 1 being in a state of extending to the right side, the first sliding member 221a is arranged on the upper surface of the second positioning component 2, and the frontmost end a4 of the first track 121E2 is located at a position corresponding to the first sliding member 221a. The second sliding member 221b is arranged on the upper surface of the second positioning component 2, and the rearmost end ba of the second track 122E2 is located at the position corresponding to the second sliding member 221b.

[0297] As shown in FIG. 87, the child safety seat is continuously rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, so that the leftmost end a2 of the first track 121E2 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point a2, and at the same time, the center point bi of the second track 122E2 is driven to move toward the second sliding member 221b in a direction indicated by an arrow at the point bi. In this process, the first positioning component 1 gradually returns to the center of the second positioning component 2 while rotating. As shown in FIG. 88, when the leftmost end a2 of the first track 121E2 moves to the first sliding member 221a, the center point bi of the second track 122E2 moves to the second sliding member 221b, and at this time, the first positioning component 1 faces backward and returns to the center of the second positioning component 2, so that the child safety seat is in the rear-facing sitting mode. Therefore, this embodiment of the present application can further realize the effect that the child safety seat is switched from the forward-facing sitting mode to the rear-facing sitting mode, thereby making it convenient to adjust the direction in which the child is seated and improving the safety of the child sitting in the child safety seat.

[0298] As shown in FIG. 88, the child safety seat is continuously rotated to drive the first positioning component 1 of the positioning assembly 100a to start rotating relative to the second positioning component 2, so that the rearmost end ai of the first track 121E2 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point ai, and at the same time, the frontmost end b2 of the second track 122E2 is driven to move toward the second sliding member 221b along a direction indicated by an arrow at the point b2. In this process, the first positioning component 1 faces the left side and gradually draws back towards the right side while rotating. As shown in FIG. 89, when the rearmost end ai of the first track 121E2 moves to the first sliding member 221a, the frontmost end b2 of the second track 122E2 moves to the second sliding member 221b, and at this time, the first positioning component 1 draws back towards the right side, so that the child safety seat is in a state of drawing back towards the right side. Therefore, this embodiment of the present application can realize the effect that the child safety seat draws back towards the right side while rotating, so that when the child safety seat is installed on a left seat of the vehicle, the child safety seat can be prevented from hitting the left door when it is rotated to face the left side for use, and moreover, some space is reserved at the left side for the child to put feet, thereby improving the use and operation experience and the satisfaction for the child safety seat. In an embodiment of the present application, as shown in FIG. 89, corresponding to the first positioning component 1 being a state of drawing back towards the right side, the first sliding member 221a is arranged on the upper surface of the second positioning component 2, and the rearmost end ai of the first track 121E2 is located at a position corresponding to the first sliding member 221a. The second sliding member 221b is arranged on the upper surface of the second positioning component 2, and the frontmost end bi of the second track 122E2 is located at the position corresponding to the second sliding member 221b.

[0299] As shown in FIG. 89, the child safety seat is continuously rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, so that the rightmost end as of the first track 121E2 on the first positioning component 1 moves toward the first sliding member 221a along a direction indicated by an arrow at the point as. and at the same time, the center point bi of the second track 122E2 is driven to move toward the second sliding member 221b along a direction indicated by an arrow at the point bi. In this process, the first positioning component 1 gradually returns to the center of the second positioning component 2 while rotating. As shown in FIG. 86, when the rightmost end as of the first track 121E2 moves to the first sliding member 221a, the center point bi of the second track 122E2 moves to the second sliding member 221b. At this time, the first positioning component 1 faces the front side and returns to the center of the second positioning component 2, so that the child safety seat is in the forward-facing sitting mode. Therefore, this embodiment of the present application can further realize the effect that the child safety seat is switched from the rear-facing sitting mode to the forward-facing sitting mode, thereby making it convenient to adjust the direction in which the child is seated and improving the safety of the child sitting in the child safety seat. At this point, the child safety seat completes a rotation cycle, and different functions are realized in different stages. The child safety seat can also be rotated in a direction opposite to the above rotation direction to realize corresponding functions in each stage, and the corresponding use process and the effects that can be achieved are the same as those described above respectively, which will not be repeatedly described in the present application.

[0300] In yet another embodiment of the present application, as shown in FIG. 90 to FIG. 92, the positioning assembly 100a includes a first positioning component 1 and a second positioning component 2. A first track 121E2 and a second track 122E2 are arranged on the first positioning component 1, and a first sliding member 221a and a second sliding member 221b are arranged on the second positioning component 2. The first track 121E2 is a circular track, and the first track 121E2 is configured to surround the center point o of the first positioning component 1. A distance between the leftmost end a2 (located at the left portion of the first positioning component 1) and the rightmost end as (located at the right portion of the first positioning component 1) of the first track 121E2 is greater than a distance between the frontmost end a4 (located at the front portion of the first positioning component 1) and the rearmost end ai (located at the rear portion of the first positioning component 1) of the first track 121E2. The second track 122E2 is a straight track. The straight track is configured to extend forwards and backwards along the front-back center line y from the center point O’ of the first positioning component 1 to the outside of the first track 121E2, specifically, reach the frontmost end 62 and the rearmost end ba of the second track 122E2, respectively.

[0301] In this embodiment, the center point bi of the second track 122E2 coincides with the center point O’ of the first positioning component 1. In some other embodiments, the second track 122E2 may be also configured to extend forwards and backwards in the direction parallel to the front-back center line y of the first positioning component 1 and reach the outside of the first track 121E2, that is, the center point bi of the second track 122E2 deviates from the center point O’ of the first positioning component 1.

[0302] In some embodiments of the present application, the first track 121E2 is an elliptical track centered on the center O’ of the first positioning component 1, and the line connecting the leftmost end a2 and the rightmost end as of the first track 121E2 is the major axis of the elliptical track. The secondtrack 122E2 is a straight track, located in the minor axis of the elliptical track, and extending to the outside of the elliptical track respectively.

[0303] In this embodiment, correspondingly, a first sliding member 221a and a second sliding member 221b are arranged on the second positioning component 2. The positions, where the first sliding member 221a and the second sliding member 221b are arranged on the second positioning component 2, correspond to the structures and positions of the first track 121E2 and the second track 122E2 on the first positioning component 1. Specifically, as shown in FIGS. 91 and 93, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the positions, where the first sliding member 221a and the second sliding member 221b are arranged, are as follows. The second sliding member 221b is arranged on the upper surface of the second positioning component 2 and located at a position corresponding to the rearmost end ba of the second track 122E2, and the first sliding member 221a is arranged on the upper surface of the second positioning component 2 and located at a position corresponding to the frontmost end a4 (i.e., a front intersection point a4 of the first track 121E2 and the second track 122E2) of the first track 121E2.

[0304] The embodiment of the present application will be illustrated by taking the positioning assembly 100a being in the forward-facing sitting mode (shown in FIG. 93) as an example. Referring to FIG. 93, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the second sliding member 221b is arranged on the upper surface of the second positioning component 2 and located at a position corresponding to the rearmost end ba of the second track 122E2. The first sliding member 221a is arranged on the upper surface of the second positioning component 2 and located at the position corresponding to the frontmost end a4 (i.e., the front intersection point a4 of the first track 121E2 and the second track 122E2) of the first track 121E2. When the child safety seat is rotated to drive the first positioning component 1 of the positioning assembly 100a to start rotating relative to the second positioning component 2, the center point bi of the second track 122E2 on the first positioning component 1 is driven to move toward the second sliding member 221b along a direction indicated by an arrow at the point bi, and at the same time, the leftmost end a2 of the first track 121E2 moves toward the first sliding member 221a along a direction indicated by an arrow at the point a2. In this process, the first positioning component 1 faces the right side and gradually extends to the rear side while rotating. As shown in FIG. 94, when the center point bi of the second track 122E2 moves to the second sliding member 221b, the leftmost end a2 of the first track 121E2 moves to the first sliding member 221a, and at this time, the first positioning component 1 come into a state of extending to the rear side but facing the right side, that is, the front portion of the first positioning component 1 is facing the right side, and the center of the first positioning component 1 is displaced toward the rear side of the second positioning component 2 relative to the center of the second positioning component 2, so that the child safety seat is in a state of extending to the rear side but facing the right side. Therefore, this embodiment of the present application can realize the effect that the child safety seat is rotated to face the right side and extends to the rear side. Therefore, this embodiment of the present application can realize a flexible adjustment for the position where the child is seated, improving the comfort of the child sitting in the child safety seat, and further making it convenient to carry the child in or out the vehicle from the right side, and improving the use and operation experience and satisfaction for the child safety seat.

[0305] As shown in FIG. 94, the child safety seat is continuously rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, so that the frontmost end b2 of the second track 122E2 on the first positioning component 1 is drivento move toward the second sliding member 221b in a direction indicated by an arrow at the point bi. and at the same time, the rearmost end ai of the first track 121E2 moves toward the first sliding member 221a along a direction indicated by an arrow at the point ai. In this process, the first positioning component 1 gradually returns to the center of the second positioning component 2 while rotating. As shown in FIG. 95, when the frontmost end bi of the second track 122E2 moves to the second sliding member 221b, the rearmost end ai of the first track 121E2 moves to the first sliding member 221a, and at this time, the first positioning component 1 faces the rear side and returns to the center of the second positioning component 2, so that the child safety seat is in the rear-facing sitting mode. Therefore, this embodiment of the present application can further realize the effect that the child safety seat is switched from the forward-facing sitting mode to the rear-facing sitting mode, thereby making it convenient to adjust the direction in which the child is seated and improving the safety of the child sitting in the child safety seat.

[0306] As shown in FIG. 95, the child safety seat is continuously rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, so that the center point bi of the second track 122E2 on the first positioning component 1 is driven to move toward the second sliding member 221b along a direction indicated by an arrow at the point bi, and at the same time, the rightmost end as of the first track 121E2 moves toward the first sliding member 221a along a direction indicated by an arrow at the point as. In this process, the first positioning component 1 moves toward the rear side while rotating. As shown in FIG. 96, when the center point bi of the second track 122E2 moves to the second sliding member 221b, the rightmost end as of the first track 121E2 moves to the first sliding member 221a, and at this time, the first positioning component 1 comes into a state of extending to the rear side, so that the child safety seat is in a state of extending to the rear side but facing the left side. Therefore, this embodiment of the present application can realize the effect that the child safety seat is rotated to come into a state of extending to the rear side but facing the left side. Therefore, this embodiment of the present application can realize a flexible adjustment for the position where the child is seated, improving the comfort of the child sitting in the child safety seat, and further making it convenient to carry the child in or out the vehicle from the left side, and improving the use and operation experience and satisfaction for the child safety seat.

[0307] As shown in FIG. 96, the child safety seat is continuously rotated to drive the first positioning component 1 of the positioning assembly to start rotating relative to the second positioning component 2, so that the rearmost end ba of the second track 122E2 on the first positioning component 1 is driven to move toward the second sliding member 221b in a direction indicated by an arrow at the point ba, and at the same time, the frontmost end a4 of the first track 121E2 moves toward the first sliding member 221a along a direction indicated by an arrow at the point a4. In this process, the first positioning component 1 gradually returns to the center of the second positioning component 2 while rotating. As shown in FIG. 93, when the rearmost end ba of the second track 122E2 moves to the second sliding member 221b, the frontmost end a4 of the first track 121E2 moves to the first sliding member 221a, and at this time, the first positioning component 1 faces the front side and returns to the center of the second positioning component 2, so that the child safety seat is in the forward-facing sitting mode. Therefore, this embodiment of the present application can further realize the effect that the child safety seat is switched from the rear-facing sitting mode to the forward-facing sitting mode, thereby making it convenient to adjust the direction in which the child is seated and improving the safety of the child sitting in the child safety seat. The child safety seat can also be rotated in a direction opposite to the aboverotation direction to realize corresponding functions in each stage, and the corresponding use process and the effects that can be achieved are the same as those described above respectively, which will not be repeatedly described in the present application.

[0308] In other embodiment of the present application is similar to the embodiments of FIG. 91 and FIG. 93, except that, as shown in FIG. 97 and FIG. 98, corresponding to the positioning assembly 100a being in the forward-facing sitting mode, the positions of the first sliding member 221a and the second sliding member 221b are as follows. The second sliding member 221b is arranged on the upper surface of the second positioning component 2 and located at the frontmost end bi of the second track 122E2, and the first sliding member 221a is arranged on the upper surface of the second positioning component 2 and located at a position corresponding to the rearmost end ai (i.e., the rear intersection point ai of the first track 121E2 and the second track 122E2) of the first track 121E2. The working process of the positioning assembly 100a of this embodiment is similar to the above process, which will not be described repeatedly herein. The working process of this embodiment differs from the above process in that, in the working process of this embodiment, it can be realized that, first, the child safety seat faces the right side and extends to the front side, then the child safety seat can return to the center point bi of the second track 122E2 to come into the rear-facing sitting mode, and then the child safety seat can come into a state of extending to the front side but facing the left side, and finally, the child safety seat can face the front side and return to the center point bi of the second track 122E2, that is, the child safety seat returns to the original forward-facing sitting mode.

[0309] A seventh aspect of the present application provides a positioning assembly 100b. As shown in FIGS. 99-100 and FIG. 103, the positioning assembly 100b includes a first positioning component 10 and a second positioning component 20. The positioning assembly 100b also includes a connecting rod 40. One end of the connecting rod 40 is pivotally connected to the first positioning component 10, and the other end of the connecting rod 40 is pivotally connected to the second positioning component 20. The connecting rod 40 is configured to enable the first positioning component 10 to move in a vertical direction and / or a horizontal direction relative to the second positioning component 20. The vertical direction refers to a direction perpendicular to the upper surface of the second positioning component 20, and the vertical direction may be, for example, an upward or downward direction as described hereinafter. The horizontal direction may be a front, rear, left, or right direction as described in the present disclosure. The positioning assembly 100a of the present application includes the first positioning component 10, the second positioning component 20 and the connecting rod 40, and the first positioning component 10 is pivotally connected to the second positioning component 20 by one end of the connecting rod 40 being pivotally connected to the first positioning component 10, and the other end of the connecting rod 40 being pivotally connected to the second positioning component 20, so that the first positioning component 10 can move in the vertical direction and / or in the horizontal direction relative to the second positioning component 20.

[0310] Further, the positioning assembly 100b further includes a third positioning component 30, and the third positioning component 30 is stationary. Further, the second positioning component 20 is rotatably arranged on the third positioning component 30 and located between the first positioning component 10 and the third positioning component 20. In the positioning assembly 100b of the present application, the first positioning component 10 is pivotally arranged on the second positioning component 20, so that the first positioning component 10 can simultaneously move upward and move toward one side relative to the second positioning component 20. In an actual use process of thepositioning assembly 100b of the present application, the positioning assembly 100b is installed on a vehicle seat, and the positioning assembly 100b is firmly attached to the vehicle floor through a support leg 300. The child safety seat 200 is detachably or fixedly installed on the first positioning component 10. By rotating the child safety seat 200, the first positioning component 10 and the second positioning component 20 connected together can rotate relative to the third positioning component 30. When the child safety seat 200 faces a side of the vehicle seat, the first positioning component 10 can move toward the side of the vehicle seat relative to the second positioning component 20, driving the child safety seat 200 to extend to the side of the vehicle seat, thereby making the child safety seat 200 closer to the vehicle door, making it convenient to carry a child in or out, and improving the use and operation experience and satisfaction for the child safety seat.

[0311] In some embodiments of the present application, the positioning assembly 100b includes a locking member, which is configured to lock or release the first positioning component 10 and the second positioning component 20, so that during a normal use of the child safety seat 200, the first positioning component 10 and the second positioning component 20 are locked together, and when the child safety seat 200 needs to be extended to a side of the vehicle seat, the first positioning component 10 can be released from the second positioning component 20, so that the first positioning component 10 can move toward the side of the vehicle seat relative to the second positioning component 20.

[0312] In an embodiment of the present application, as shown in FIGS. 101 and 102, the locking member includes a locking hook 1022 and a locking hole 207. The locking hole 207 is formed on the second positioning component 20. The locking hook 1022 is arranged on the first positioning component 10. Further, the locking hook 1022 includes a free end 10221 and a locking end 10222. The locking end 10222 is configured to engage with the locking hole 207, or to be released from the locking hole 207. Through the arrangement of the locking hook 1022, the locking end 10222 of the locking hook 1022 may engage with the locking hole 207, thereby locking the first positioning component 10 and the second positioning component 20 together. The locking end 10222 of the locking hook 1022 may also be disengaged from the locking hole 207, thereby releasing the first positioning component 10 from the second positioning component 20.

[0313] In an embodiment of the present application, as shown in FIG. 101, the first positioning component 10 includes an upper seat body 101 and a lower seat body 102, and the upper seat body 101 and the lower seat body 102 are fixedly connected. A first pivot shaft 1021 is arranged on the lower seat body 102. One end of the first pivot shaft 1021 is fixedly connected to the lower seat body 102, and the other end of the first pivot shaft 1021 is pivotally connected to a portion of the locking hook 1022 between the free end 10221 and the locking end 10222. Further, the locking hook 1022 is configured to be pivotable around the first pivot shaft 1021. In this way, by controlling the position of the free end 10221 of the locking hook 1022, the locking end 10222 of the locking hook 1022 may be driven to engage with the locking hole 207, thereby locking the first positioning component 10 and the second positioning component 20 together, and the locking end 10222 of the locking hook 1022 may also be disengaged from the locking hole 207, thereby releasing the first positioning component 10 from the second positioning component 20.

[0314] In an embodiment of the present application, as shown in FIGS. 101 and 102, a button 1011 is disposed on the upper seat 101. The button 1011 is disposed at a position close to the free end 10221 of the locking hook 1022. When the button is pressed, the free end 10221 of the locking hook 1022 may be pushed to rotate around the first pivot axis 1021. In such an arrangement, the locking end 10222 canpivot to an unlocking position and is disengaged from the second positioning component 20. A first elastic member 1025 is sleeved on the first pivot axis 1021. The first elastic member 1025 is configured to enable the locking end 10222 of the locking hook 1022 to pivot toward the locking position, that is, the first elastic member 1025 enables the locking end 10222 of the locking hook 1022 to press against a side wall of the locking hole 207 in the direction in which the button 1011 pushes the free end 10221. In an embodiment of the present application, the locking hole 207 is a through hole, as shown in FIG. 101. During a normal use of the child safety seat 200, the locking end 10222 of the locking hook 1022 passes through the locking hole 207, and under the action of the first elastic member 1025, the locking end 10222 of the locking hook 1022 engages with the lower surface of the bottom the second positioning component 20, thereby locking the first positioning component 10 and the second positioning component 20 together. When the child safety seat 200 needs to be extended to one side of the vehicle seat, as shown in FIG. 102, the button 1011 is pressed, and the button 1011 pushes the free end 10221 of the locking hook 1022, so that the free end 10221 rotates around the first pivot axis 1021 and overcomes the elastic force applied to the locking end 10222 by the first elastic member 1025, so as to drive the locking end10222 to rotate and leave the pressed position of the lower surface of the bottom of the second positioning component 20, so as to facilitate a subsequent withdrawal of the locking end 10222 from the locking hole 207, and release the first positioning component 10 from the second positioning component 20. In some embodiments, the first elastic member 1025 may be a torsion spring, which is sleeved on the first pivot shaft 1021, with one end abutting against the lower seat body 102 and the other end abutting against the locking hook 1022, but is not limited thereto.

[0315] In an embodiment of the present application, as shown in FIG. 106, in the process of locking the first positioning component 10 and the second positioning component 20 together, in order to make the locking end 10222 of the locking hook 1022 easily engage with the locking hole 207, a side surface10223 of the locking end 10222 of the locking hook 1022 is an inclined surface, and the side surface 10223 of the locking end 10222 is a side surface of the locking end 10221 abutting against the side wall of the locking hole 207 under the action of the first elastic member 1025. When the child safety seat connected to the first positioning component 10 is pressed downward, the inclined side surface 10223 can abut against the side wall of the locking hole 207 and guide the locking end 10222 of the locking hook 1022 to enter the locking hole 207 to engage with the lower surface of the second positioning component 20, thereby locking the first positioning component 10 and the second positioning component 20 together again.

[0316] In some embodiments of the present application, two support rods 201 are fixedly arranged on the second positioning component 20, a limiting rod 203 is arranged between the two support rods 201, and two ends of the limiting rod 203 are fixedly connected to the two support rods 201 respectively. The limiting rod 203 is configured to, after the locking end 10222 is disengaged from the locking hole 207, limit the locking hook 1022 to be at one position. And / Or a limiting groove 1024 is formed on a lower surface of the first positioning component 10, and when the first positioning component 10 and the second positioning component 20 are locked together, the locking end 10222 of the locking hook 1022 engages with the locking hole 207, and the limiting rod 203 is locked in the limiting groove 1024. In some embodiments of the present application, a pivot hole may be formed in one of a first end of the connecting rod 40 and the first positioning component 10, and correspondingly, a pivot shaft is arranged on the other one of the first end of the connecting rod 40 and the first positioning components 10. A pivot hole may be formed in one of a second end of the connecting rod 40 and the second positioningcomponent 20, and correspondingly, a pivot shaft is arranged on the other of the second end of the connecting rod 40 and the second positioning components 20. Alternatively, pivot holes may be formed in both the first end of the connecting rod 40 and the first positioning component 10, and a pivot shaft is arranged to pass through the pivot holes in the first end of the connecting rod 40 and in the first positioning component 10, and pivot holes are formed in both the second end of the connecting rod 40 and the second positioning component 20, and another pivot shaft is arranged to pass through the pivot holes in the second end of the connecting rod 40 and in the second positioning component 20. Further, in an embodiment of the present application, as shown in FIG. 103, the first end of the connecting rod 40 has a first pivot hole 401, and the second end of the connecting rod 40 has a second pivot hole 402. As shown in FIG. 104, correspondingly, a third pivot shaft 1023 is arranged on the first positioning component 10 and pivotally connected to the first pivot hole 401. Referring to FIG. 103, a second pivot shaft 206 is fixedly arranged on the second positioning component 20, and the second pivot shaft 206 is pivotally connected to the second pivot hole 402. More preferably, a support rod 201 is fixedly arranged on the second positioning component 20, and the second pivot shaft 206 is arranged on the support rod 201. In such arrangement, the first positioning component 10 and the second positioning component 20 are pivotally connected through the connecting rod 40. As shown in FIG. 104, the connecting rod 40 can pivot relative to the support rod 201 in a direction W indicated by the arrow in the figure, driving the first positioning component 10 to move downward and move towards one side, so that the first positioning component 10 can move relative to the second positioning component 20 in the vertical direction and / or horizontal direction, thereby realizing an upward lifting and lateral movement of the first positioning component 10.

[0317] In an embodiment of the present application, as shown in FIG. 103, a second elastic member 205 is sleeved on the second pivot shaft 206, and the second elastic member 205 is configured to drive the connecting rod 40 to push the first positioning component 10 to move upward. Specifically, as shown in FIGS. 102 and 106, when the locking end 10222 of the locking hook 1022 is disengaged from the locking hole 207, under the action of the rebounding force of the second elastic member 205, the connecting rod 40 pushes the first positioning component 10, so that the first positioning component 10 is lifted upward, thus driving the locking hook 1022 to move upward, and driving the locking end 10222 to withdraw from the locking hole 207, thereby releasing the first positioning component 10 from the second positioning component 20.

[0318] In an embodiment of the present application, as shown in FIGS. 103 and 104, the number of connecting rods 40 is four. The number of support rods 201 is two, and two ends of each support rod 201 are fixedly arranged on the second positioning component 20. Each support rod 201 is provided with two second pivot shafts 206. One end of each second pivot shaft 206 is fixedly connected to the support rod 201, and the other end of each second pivot shaft 206 is pivotally connected to the second pivot hole 402 of the corresponding connecting rod 40, the present application is not limited thereto. In some embodiments not shown, the number of connecting rods 40 may also be 2, 3, 5 or 6, etc., as long as the pivotal connection between the first positioning component 10 and the second positioning component 20 can be ensured, and a stable support for the first positioning component 10 can be achieved.

[0319] In order to enable the second elastic member 205 to push the first positioning component 10 to move upward after the first positioning component 10 is released from the second positioning component 20, in an embodiment of the present application, as shown in FIG. 103, each support rod 201 has twofixing protrusions 204 arranged thereon, and each connecting rod 40 also has a fixing hole 403. One end of each second elastic member 205 is fixedly connected to a corresponding fixing protrusion 204, and the other end of the second elastic member 205 is fixedly connected to the fixing hole 403 of the corresponding connecting rod 40. By arranging the fixing protrusion 204 on the support rod 201, a fixed support can be provided for the second elastic member 205, so that the second elastic member 205 can push the first positioning component 10 to move upward after the first positioning component 10 is released from the second positioning component 20.

[0320] In an embodiment of the present application, a limiting rod 203 is arranged between the two support rods 201, and two ends of the limiting rod 203 are respectively fixedly connected to the two support rods 201. As shown in FIGS. 106-108, after the first positioning component 10 is released from the second positioning component 20, the locking end 10222 of the locking hook 1022 withdraws from the locking hole 207. After the button 1011 is released, under the action of the first elastic member 1025, the locking end 10222 may pivot counterclockwise around the first pivot axis 1021 to reach the lower surface of the lower seat body 102, thus disabling the locking end 10222 of the locking hook 1022 to pass through the locking hole 207 to lock the first positioning component 10 and the second positioning component 20 together when the first positioning component 10 and the second positioning component 20 need to be locked next time. In order to avoid such an accident, in an embodiment of the present application, a limiting rod 203 is arranged on and between the two support rods 201. The limiting rod 203 is configured to limit an excessive pivot of the locking end 10222 of the locking hook 1022 caused by the force of the first elastic member 1025 when the locking end 10222 is disengaged from the locking hole. In other words, the limiting rod 203 can keep the locking end 10222 of the locking hook 1022 in a position in which the locking end 10222 is disengaged from the locking hole 207, and when the first positioning component 10 needs to be locked to the second positioning component 20, the locking end 10222 of the locking hook 1022 can smoothly engage with the locking hole 207, thereby further locking the first positioning component 10 and the second positioning component 20 together.

[0321] The present application will be described by taking the positioning assembly 100b being in the forward-facing sitting mode shown in FIG. 110 as an example. As shown in FIGS. 101-102 and FIG. 110, the positioning assembly 100b is in the forward-facing sitting mode (as shown in FIG. 110), and the child safety seat 200 is installed on the first positioning component 10 of the positioning assembly 100b, and the first positioning component 10 and the second positioning component 20 are locked together. When a child needs to be carried out from the side of the vehicle door, the child safety seat 200 is rotated so that the first positioning component 10 and the second positioning component 20 that are locked together rotate with the child safety seat 200 to face the side of the vehicle door (as shown in FIG. 101). Press the button 1011, and the button 1011 pushes the free end 10221 of the locking hook 1022 to rotate around the first pivot axis 1021. The pivoting of the free end 10221 drives the locking end 10222 to pivot to the unlocking position and to be disengaged from the locking hole 207, thus the first positioning component 10 is released from the second positioning component 20. At this time, under the action of the rebound force of the second elastic member 205, the connecting rod 40 pivots around the second pivot axis 206 relative to the second positioning component 20, and pushes the first positioning component 10 at the same time, so that the first positioning component 10 is lifted upward, thus driving the locking hook 1022 to move upward and driving the locking end 10222 to withdraw from the locking hole 207 (as shown in FIG. 106). Under the elastic force of the second elastic member 205, the first positioning component 10 is pushed toward the side of the vehicle door, thereby pushing the child safetyseat 200 out toward the side of the vehicle door. Alternatively, the child safety seat 200 is pushed toward the side of the vehicle door, and the first positioning component 10, under the push of the child safety seat 200, drives the connecting rod 40 to pivot toward the side of the vehicle door, and the pivoting of the connecting rod 40 drives the child safety seat 200 installed on the first positioning component 10 to gradually descend and move towards this side of the vehicle door, thereby pushing the child safety seat 200 out from the side of the vehicle door. After being used, the child safety seat 200 can be pushed from the side of the vehicle door toward the center of the vehicle seat. Under the push of the child safety seat 200, the first positioning component 10 drives the connecting rod 40 to pivot toward the center of the vehicle seat. The pivoting of the connecting rod 40 drives the child safety seat 200 installed on the first positioning component 10 to gradually rise and approach the center of the vehicle seat. After reaching the center of the vehicle seat, the child safety seat 200 is pressed downward, and the locking end 10222 of the locking hook 1022 arranged on the first positioning component 10 moves downward until it engages with the locking hole 207. At this time, the first positioning component 10 and the second positioning component 20 are locked together. Finally, the child safety seat 200 is rotated so that the child safety seat 200 drives the first positioning component 10, together with the second positioning component 20, to rotate to be in the forward-facing sitting mode or the rear-facing sitting mode relative to the third positioning component 30.

[0322] In some embodiments of the present application, when the child safety seat 200 faces the side of the vehicle seat, in order to enable the first positioning component 10 to extend to the side of the second positioning component 20, the length of the connecting rod 40 is configured to be at least greater than or equal to a length, for which the first positioning component 10 needs to extend. After the first positioning component 10 is released from the second positioning component 20, the child safety seat may be pushed to the left or right, so that the connecting rod 40 gradually descends and extends to the left side or right side, thereby pushing the child safety seat out to the left or right side.

[0323] In order to reduce the length of the connecting rod 40 thus making the first positioning component 10 occupy as little space as possible after being released from the second positioning component 20, and in order to ensure that the first positioning component 10 can extend for a sufficient length beyond one side of the second positioning component 20, in an embodiment of the present application, as shown in FIGS. 103 and 104, the support rod 201 is arranged on the second positioning component 20, and a sliding component 202 is further sleeved on the support rod 201, and the sliding component 202 is slidable along the support rod 20 land the sliding component 202 and the bottom of the second positioning component 20 are spaced apart. One end of the connecting rod 40 is pivotally connected to the first positioning component 10, and the other end of the connecting rod 40 is pivotally connected to the sliding component 202. Specifically, the second pivot shaft 206 is arranged on the sliding component 202, and the other end of the connecting rod 40 is pivotally connected to the sliding component 202 through the second pivot shaft 206. Alternatively, the second pivot shaft 206 may be arranged at another end of the connecting rod 40, but is not limited thereto. As shown in FIG. 102, when the first positioning component 10 is released from the second positioning component 20, the first positioning component 10 is movable in the vertical direction relative to the second positioning component 20 or may be bounced up in the vertical direction. At this time, the first positioning component 10, together with the sliding component 202, can slide along the support rod 201 via the sliding component 202 sleeved on the support rod 201. As shown in FIGS. 104 and 107, being connected to the sliding component 202 through the connecting rod 40, the first positioning component 10, togetherwith the sliding component 202, can move along the supporting rod 201 arranged on the second positioning component 20 and move toward one side of the vehicle seat. In addition, the arrangement of the sliding component 202 may also reduce a resistance to the first positioning component 10 when the first positioning component 10 is pushed out from one side, thereby making it easier to push the child safety seat out from one side.

[0324] In and embodiment of the present application, as shown in FIG. 103 and FIG. 104, the number of the connecting rods 40 is four. The number of the support rods 201 is two, and two ends of each support rod 201 are fixedly arranged on the second positioning component 20. The number of the sliding components 202 is two. Each sliding component 202 is provided with two second pivot shafts 206. One end of each second pivot shaft 206 is fixedly connected to the sliding component 202, and the other end of each second pivot shaft 206 is pivotally connected to the second pivot hole 402 of the corresponding connecting rod 40. Such a configuration can ensure that, via the connecting rod 40, the first positioning component 10 moves smoothly along the supporting rod 201 on the second positioning component 20 toward one side of the vehicle seat along with the sliding component 202. It may be understood that the numbers of the connecting rods 40, the support rods 201 and the sliding components 202 are not limited in this application, as long as the first positioning component 10 can move and come into a state of extending to one side of the vehicle seat along the supporting rod 201 on the second positioning component 20 along with the sliding component 202 through the connecting rod 40.

[0325] In an embodiment of the present application, as shown in FIG. 103 and FIG. 104, two fixing protrusions 204 are arranged on each sliding component 202, and each connecting rod 40 also has a fixing hole 403. One end of each second elastic member 205 is fixedly connected to a corresponding fixing protrusion 204, and the other end of each second elastic member 205 is fixedly connected to the fixing hole 403 of a corresponding connecting rod 40. In this way, the fixing protrusion 204 arranged on the sliding component 202 can provide a fixed support for the second elastic member 205. After the first positioning component 10 is released from the second positioning component 20, under the action of the second elastic member 205, the first positioning component 10 can be lifted upward, as shown in FIG. 105. Moreover, through the connecting rod 40, the first positioning component 10 can move along the support rod 201 together with the sliding component 202 and move toward one side of the vehicle seat.

[0326] In another embodiment, as shown in FIG. 103, sliding components 202 are sleeved on the two support rods 201 respectively. Further, a limiting rod 203 is arranged between the two sliding components 202, and two ends of the limiting rod 203 are fixedly connected to the two sliding components 202 respectively. As shown in FIGS. 106 to 108, after the first positioning component 10 is released from the second positioning component 20, the locking end 10222 of the locking hook 1022 withdraws from the locking hole 207. After the button 1011 is released, under the action of the first elastic member 1025, the locking end 10222 may pivot counterclockwise around the first pivot axis 1021 to reach the lower surface of the lower seat body 102, thus disabling the locking end 10222 of the locking hook 1022 to engage with the locking hole 207 to lock the first positioning component 10 and the second positioning component 20 together when the first positioning component 10 and the second positioning component 20 need to be locked next time. In order to avoid such an accident, in an embodiment of the present application, a limiting rod 203 is arranged on and between the two sliding components 202. The limiting rod 203 is configured to limit an excessive pivot of the locking end 10222 of the locking hook 1022 caused by the force of the first elastic member 1025 when the locking end 10222 is disengaged from the locking hole. In other words, the limiting rod 203 can keep the locking end 10222 of the lockinghook 1022 in a position in which the locking end 10222 is disengaged from the locking hole 207, and when the first positioning component 10 needs to be locked to the second positioning component 20, the locking end 10222 of the locking hook 1022 can smoothly pass through the locking hole 207, thereby further locking the first positioning component 10 and the second positioning component 20 together.

[0327] Further, in an embodiment of the present application, after the first positioning component 10 and the second positioning component 20 are locked together, in order to prevent the first positioning component 10 from sliding laterally relative to the second positioning component 20, as shown in FIGS. 101 and 102, a limiting groove 1024 is formed on the lower surface of the lower seat body 102, and when the first positioning component 10 and the second positioning component 20 are locked together, the locking end 10222 of the locking hook 1022 engages with the locking hole 207, and the limiting rod 203 is locked in the limiting groove 1024. As shown in FIG. 101, after the locking end 10222 of the locking hook 1022 passes through the locking hole 207, under the action of the first elastic member 1025, the locking end 10222 of the locking hook 1022 presses against the bottom lower surface of the second positioning component 20, thereby locking the first positioning component 10 and the second positioning component 20 together. At the same time, the limiting rod 203 arranged between the two support rods 201 or between the two sliding components 202 is locked into the limiting groove 1024, thereby preventing the first positioning component 10 from sliding laterally relative to the second positioning component 20 and locking the first positioning component 10 and the second positioning component 20 more firmly. When the child safety seat 200 needs to extend to one side of the vehicle seat, as shown in FIGS. 106 to 108, the button 1011 is pressed, and the button 1011 pushes the locking hook 1022 to pivot. Under the rebound force of the second elastic member 205, the connecting rod 40 pivots and pushes the first positioning component 10 to lift upward, and simultaneously drives the locking hook 1022 to move upward, thus driving the locking hook 1022 to withdraw from the locking hole 207. As the first positioning component 10 is bounced upward, the limiting groove 1024 moves upward, thus releasing the limitation on the limiting rod 203. Continue to push the child safety seat 200 to one side, and the first positioning component 10 can move towards the side relative to the second positioning component 20. The shape of the limiting groove 1024 is not limited in the present application, as long as when the first positioning component 10 is locked on the second positioning component 20, the limiting groove 1024 can lock the limiting rod 203 to prevent the first positioning component 10 from sliding laterally relative to the second positioning component 20.

[0328] The present application will be described by taking the positioning assembly 100b being in the forward-facing sitting mode shown in FIG. 110 as an example. The positioning assembly 100b is in the forward-facing sitting mode (as shown in FIG. 110), and the child safety seat 200 is installed on the first positioning component 10 of the positioning assembly 100b, and the first positioning component 10 and the second positioning component 20 are locked together. When a child needs to be carried out from the side of the vehicle door, the child safety seat 200 is rotated so that the first positioning component 10 and the second positioning component 20 that are locked together rotate with the child safety seat 200 to face the side of the vehicle door (as shown in FIG. 101). Press the button 1011, and the button 1011 pushes the free end 10221 of the locking hook 1022 to rotate around the first pivot axis 1021. The pivoting of the free end 10221 drives the locking end 10222 to pivot to the unlocking position and to be disengaged from the locking hole 207, thus the first positioning component 10 is released from the second positioning component 20. At this time, under the action of the rebound force of the second elastic member 205 arranged on the connecting rod 40, the connecting rod 40 pushes the first positioningcomponent 10, so that the first positioning component 10 is lifted upward, thus driving the locking hook 1022 to move upward and driving the locking end 10222 to withdraw from the locking hole 207 (as shown in FIG. 105 and FIG. 106). The child safety seat 200 is pushed toward the side of the vehicle door, and the first positioning component 10, under the push of the child safety seat 200, drives the connecting rod 40 to pivot toward the side of the vehicle door, and the pivoting of the connecting rod 40 drives the child safety seat 200 installed on the first positioning component 10 to gradually descend and extend towards this side of the vehicle door, and at the same time, the sliding component 202 is driven to slide along the support rod 201 towards this side of the vehicle door, thereby pushing the child safety seat 200 out from the side of the vehicle door, and ensuring that the child safety seat 200 can be pushed out for a sufficient distance from the side of the vehicle door (as shown in FIG. 107 and FIG. 108). After being used, the child safety seat 200 can be pushed from the side of the vehicle door toward the center of the vehicle seat. Under the push of the child safety seat 200, the first positioning component 10 drives the sliding component 202 to slide along the support rod 201 toward the center of the seat, and simultaneously drives the connecting rod 40 to pivot toward the center of the vehicle seat. The pivoting of the connecting rod 40 and the sliding of the sliding component 202 drives the child safety seat 200 installed on the first positioning component 10 to gradually rise and approach the center of the vehicle seat. After reaching the center of the vehicle seat, the child safety seat 200 is pressed downward by overcoming the rebound force of the second elastic member 205, and the locking end 10222 of the locking hook 1022 arranged on the first positioning component 10 moves downward until it engages with the locking hole 207. At this time, the first positioning component 10 and the second positioning component 20 are locked together (shown in FIG. 101). Finally, the child safety seat 200 is rotated so that the child safety seat 200 drives the first positioning component 10, together with the second positioning component 20, to rotate to be in the forward-facing sitting mode (shown in FIG. 110) or the rear-facing sitting mode (shown in FIG. 109) relative to the third positioning component 30.

[0329] The present application further provides a child restraint system for being installed on a vehicle seat. As shown in FIGS. 109 to 115, the child restraint system includes a child safety seat 200 or a child basket 400, and a positioning assembly 100a or 100b of any of the above embodiments. The child safety seat 200 or the child basket 400 is detachably arranged on the positioning assembly 100a or 100b. In an actual use of the present application, the child restraint system is installed on the vehicle seat. The child safety seat 200 or the child basket 400 is detachably or fixedly installed on the positioning assembly 100a or 100b. By rotating the child safety seat 200 or the child basket 400, the child safety seat 200 or the child basket 400 rotates and moves toward a lateral position along with the first positioning component 1 or 10 in the positioning assembly 100a or 100b, and the child safety seat 200 or the child basket 400 is in a state of extending to one side, so that the child safety seat 200 or the child basket 400 is closer to the vehicle door, thereby making it convenient to carry a child in or out, and improving the usage and operation experience and the satisfaction for the child restraint system.

[0330] In an embodime...

Claims

What is claimed is1. A positioning assembly, characterized by comprising a first positioning component and a second positioning component, wherein a first track is arranged on one of the first positioning component and the second positioning component, and a first sliding member is arranged on the other of the first positioning component and the second positioning component, and the first sliding member is slidable along the first track; a second track is arranged on the one of the first positioning component and the second positioning component, and a second sliding member is arranged on the other of the first positioning component and the second positioning component, and the second sliding member is slidable along the second track; the first positioning component is rotatable and movable relative to the second positioning component along the first track and the second track; and the first track is an arc track or a circular track, and the second track is a straight track.

2. The positioning assembly according to claim 1, wherein the first sliding member and the second sliding member are arranged on the first positioning component, and the second positioning component comprises the first track and the second track.

3. The positioning assembly according to claim 2, wherein: the first track is a circular track, and the first track is configured to surround a center point of the second positioning component; and the second track is a straight track, and the second track extends to the left and to the right along a left-right center line from the center point of the second positioning component to the outside of the first track, or extends to the left and to the right along a direction parallel to the left-right center line to the outside of the first track.

4. The positioning assembly according to claim 3, wherein: a distance between a frontmost end and a rearmost end of the circular track is greater than a distance between a leftmost end and a rightmost end of the circular track.

5. The positioning assembly according to claim 3, wherein the first track is an elliptical track centered on the center point of the second positioning component, and a straight line connecting the frontmost end and the rearmost end of the elliptical track is the major axis of the elliptical track, and a straight line connecting the leftmost end and the rightmost end of the elliptical track is the minor axis of the elliptical track; and the second track is a straight track, and the second track is located in the minor axis of the elliptical track and configured to extend to the outside of the elliptical track.

6. The positioning assembly according to claim 5, wherein corresponding to the positioning assembly being in a forward-facing sitting mode or a rear-facing sitting mode, the first sliding member is arranged on a lower surface of the first positioning component and located at a position corresponding to a rearmost end or a frontmost end of the first track, and the second sliding member is arranged on a lower surface of the first positioning component and located at a position corresponding to a center point of the second track.

7. The positioning assembly according to claim 6, wherein corresponding to the first positioning component in a state of extending to a left side, the first sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to a rightmost end of the first track, and the second sliding member is arranged on thelower surface of the first positioning component and located at a position corresponding to a leftmost end of the second track; and / or corresponding to the first positioning component in a state of extending to a right side, the first sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to a leftmost end of the first track, and the second sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to a rightmost end of the second track.

8. The positioning assembly according to any one of claims 5 to 7, wherein a length of the second track is greater than or equal to a difference between a length of the major axis and a length of the minor axis.

9. The positioning assembly according to any one of claims 2 to 7, wherein the first sliding member is sleeved with a first bearing, and the first bearing engages with the first track; the second sliding member is sleeved with a second bearing, and the second bearing engages with the second track; and an outer contour dimension of the first bearing is larger than an outer contour dimension of the second bearing, or the outer contour dimension of the first bearing is larger than a width of the second track.

10. The positioning assembly according to any one of claims 2 to 7, wherein the second positioning component further comprises a third track; the third track is arranged below the second track; and the second sliding member is configured to pass through the second track and to be inserted into the third track.

11. The positioning assembly according to claim 2, wherein the first track is a circular track, and the circular track is configured to surround a center point of the second positioning component, and a distance between a leftmost end and a rightmost end of the first track is greater than a distance between a frontmost end and a rearmost end of the first track; the second track is a straight track, and the second track is configured to extend forwards and backwards along a front-back center line from the center point of the second positioning component to the outside of the first track, or configured to extend forwards and backwards along a direction parallel to the front-back center line of the second positioning component and reach the outside of the first track.

12. The positioning assembly according to claim 11, wherein corresponding to the positioning assembly being in a forward-facing sitting mode: the first sliding member is arranged on a lower surface of the first positioning component, and located at a position corresponding to the frontmost end of the first track; and the second sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to a rearmost end of the second track.

13. The positioning assembly according to claim 12, wherein corresponding to the first positioning component being in a state of extending to a left side, the first sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to the leftmost end of the first track, and the second sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to a center point of the second track; and / orcorresponding to the first positioning component being in a state of extending to a right side, the first sliding member is arranged on the lower surface of the first positioning component and located at a position corresponding to the rightmost end of the first track, and the second sliding member is located at a position corresponding to the center point of the second track.

14. The positioning assembly according to claim 1, wherein a first track and a second track are arranged on the first positioning component, and a first sliding member and a second sliding member are arranged on the second positioning component.

15. The positioning assembly according to claim 14, wherein the first track is a circular track, and the first track is configured to surround a center point of the first positioning component, and a distance between a frontmost end and a rearmost end of the first track is greater than a distance between a leftmost end and a rightmost end of the first track; and the second track is a straight track; the second track is configured to extend along a left-right center line from the center point of the first positioning component to the left and to the right and reach the outside of the first track, or configured to extend along a direction parallel to the left-right center line from the center point of the first positioning component to the left and to the right and reach the outside of the first track.

16. The positioning assembly according to claim 15, wherein corresponding to the positioning assembly being in a forward-facing sitting mode: the first sliding member is arranged on an upper surface of the second positioning component and located at a position corresponding to the leftmost end of the first track; and the second sliding member is arranged on the upper surface of the second positioning component and located at a position corresponding to a rightmost end of the second track.

17. The positioning assembly according to claim 16, wherein corresponding to the first positioning component being in a state of extending to the right side, the first sliding member is arranged on the upper surface of the second positioning component, and the rearmost end of the first track is located at a position corresponding to the first sliding member; and the second sliding member is arranged on the upper surface of the second positioning component, and a center point of the second track is located at a position corresponding to the second sliding member, and / or corresponding to the first positioning component being in a state of drawing back towards the right side, the first sliding member is arranged on the upper surface of the second positioning component, and the frontmost end of the first track is located at a position corresponding to the first sliding member; the second sliding member is arranged on the upper surface of the second positioning component, and the center point of the second track is located at a position corresponding to the second sliding member.

18. The positioning assembly according to claim 15, wherein corresponding to the positioning assembly being in a forward-facing sitting mode, the first sliding member is arranged on an upper surface of the second positioning component and located at a position corresponding to the rightmost end of the first track; and the second sliding member is arranged on the upper surface of the second positioning component and located at a position corresponding to a leftmost end of the second track.

19. The positioning assembly according to claim 18, wherein: corresponding to the first positioning component being in a state of drawing back towards the left side, the first sliding member is arranged on the upper surface of the second positioning component, and the frontmost end of the first track is located at a position corresponding to the first sliding member; thesecond sliding member is arranged on the upper surface of the second positioning component, and a center point of the second track is located at a position corresponding to the second sliding member; and / or corresponding to the first positioning component being in a state of extending to the left side, the first sliding member is arranged on the upper surface of the second positioning component, and the rearmost end of the first track is located at a position corresponding to the first sliding member; and the second sliding member is arranged on the upper surface of the second positioning component, and the center point of the second track is located at a position corresponding to the second sliding member.

20. The positioning assembly according to claim 14, wherein the first track is a circular track; the first track is configured to surround a center point of the first positioning component; and a distance between a leftmost end and a rightmost end of the first track is greater than a distance between a frontmost end and a rearmost end of the first track; and the second track is a straight track; the second track is configured to extend forwards and backwards along a front-back center line from the center point of the first positioning component and reach the outside of the first track, or configured to extend forwards and backwards along a direction parallel to the front-back center line from the center point of the first positioning component to the outside of the first track.

21. The positioning assembly according to claim 20, wherein: corresponding to the positioning assembly being in a forward-facing sitting mode, the first sliding member is arranged on an upper surface of the second positioning component and located at a position corresponding to the leftmost end of the first track, and the second sliding member is arranged on the upper surface of the second positioning component and located at a position corresponding to a center point of the second track.

22. The positioning assembly according to claim 21, wherein corresponding to the first positioning component being in a state of extending to a left side, the first sliding member is arranged on the upper surface of the second positioning component, and the frontmost end of the first track is located at a position corresponding to the first sliding member; and the second sliding member is arranged on the upper surface of the second positioning component, and a rearmost end of the second track is located at a position corresponding to the second sliding member; and / or corresponding to the first positioning component being in a state of drawing back towards the left side, the first sliding member is arranged on the upper surface of the second positioning component, and the rearmost end of the first track is located at a position corresponding to the first sliding member; and the second sliding member is arranged on the upper surface of the second positioning component, and a frontmost end of the second track is located at a position corresponding to the second sliding member.

23. The positioning assembly according to claim 20, wherein corresponding to the positioning assembly being in a forward-facing sitting mode, the first sliding member is arranged on an upper surface of the second positioning component and located at a position corresponding to the rightmost end of the first track, and the second sliding member is arranged on the upper surface of the second positioning component and located at a position corresponding to a center point of the second track.

24. The positioning assembly according to claim 23, wherein corresponding to the first positioning component being in a state of extending to a right side, the first sliding member is arranged on the upper surface of the second positioning component, and the frontmost end of the first track is located at a position corresponding to the first sliding member; and the second sliding member is arranged on the upper surface of the second positioning component, and arearmost end of the second track is located at a position corresponding to the second sliding member; and / or corresponding to the first positioning component being in a state of drawing back towards the right side, the first sliding member is arranged on the upper surface of the second positioning component, and the rearmost end of the first track is located at a position corresponding to the first sliding member; and the second sliding member is arranged on the upper surface of the second positioning component, and a frontmost end of the second track is located at a position corresponding to the second sliding member.

25. A positioning assembly, comprising a first positioning component and a second positioning component, wherein the positioning assembly further comprises a connecting rod; one end of the connecting rod is pivotally connected to the first positioning component, and the other end of the connecting rod is pivotally connected to the second positioning component; the connecting rod is configured to enable the first positioning component to move in a vertical direction and / or a horizontal direction relative to the second positioning component.

26. The positioning assembly according to claim 25, further comprising a locking member, wherein the locking member is configured to lock or release the first positioning component and the second positioning component; the locking member comprises a locking hook and a locking hole; the locking hook is pivotally connected to the first positioning component, and the locking hook comprises a free end and a locking end; and the locking end is configured to engage with the locking hole or to be released from the locking hole.

27. The positioning assembly according to claim 26, wherein a side surface of the locking end of the locking hook is an inclined surface, and the inclined surface is a side surface of the locking end abutting against the side wall of the locking hole under an action of the first elastic member to guide the locking end into the locking hole.

28. The positioning assembly according to claim 26, wherein two support rods are fixedly arranged on the second positioning component, a limiting rod is arranged between the two support rods, and two ends of the limiting rod are fixedly connected to the two support rods respectively; and the limiting rod is configured to, after the locking end is disengaged from the locking hole, limit the locking hook to be at one position; and / or a limiting groove is formed on a lower surface of the first positioning component, and when the first positioning component and the second positioning component are locked together, the locking end of the locking hook engages with the locking hole, and the limiting rod is locked in the limiting groove.

29. The positioning assembly according to claim 25, wherein a support rod is fixedly arranged on the second positioning component, and a sliding component is sleeved on the support rod; the sliding component and the bottom of the second positioning component are spaced apart; one end of the connecting rod is pivotally connected to the first positioning component, and the other end of the connecting rod is pivotally connected to the sliding component.

30. A child restraint system, used for being installed on a vehicle seat and comprising a child safety seat or a child basket, and the positioning assembly of claim 1 or claim 25, wherein the child safety seat or the child basket is detachably arranged on the positioning assembly.

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