Rotatable child seat mounting base and child restraint system

Abstract

This application discloses a rotatable child seat mounting base and a child restraint system. The child seat mounting base includes: a connecting frame; a rotating disk rotatably mounted on the connecting frame; a first locking mechanism and a second locking mechanism mounted on the rotating disk, the first locking mechanism providing a first locking groove and a second locking groove, and the second locking mechanism providing a third locking groove and a fourth locking groove, each locking groove opening upwards in the direction of gravity and equipped with a corresponding locking hook; and a drive arm rotatably mounted on the rotating disk, with both ends of the drive arm linked to the first locking mechanism and the second locking mechanism respectively. The drive arm has a working position that drives each locking hook to open its corresponding locking groove and a standby position. In the standby position, each locking hook closes its corresponding locking groove. During the rotation of the rotating disk, the first locking mechanism, the second locking mechanism, and the drive arm move with the rotating disk. This application achieves a highly stable locking effect, a simple component fit relationship, and a rich design basis to improve the user experience.

Description

Technical Field

[0001] This application relates to the field of child car seats, and in particular to a rotatable child car seat mounting base and a child restraint system. Background Technology

[0002] With the improvement of living standards, child restraint systems in cars have gradually attracted people's attention. A child restraint system is generally a seating device specifically designed for the safe riding of children in a car. Depending on the age and size of the child, child restraint systems can be divided into infant carriers for younger infants and car seats for older children. Besides the size difference, car seats and infant carriers also differ significantly in their usage scenarios. For example, infant carriers are generally required to be installed facing rearward relative to the vehicle's direction of travel, while car seats are generally installed facing forward. Furthermore, older children can independently enter or exit car seats, so car seats are generally fixed to the car; conversely, infant carriers need to be easily connected to or detached from the car to facilitate the movement of younger infants.

[0003] Therefore, mounting bases that can accommodate both infant car seats and car seats have emerged on the market. These bases can be permanently fixed to car seats and are equipped with locking mechanisms. When an infant or child needs to ride in the car, the infant car seat or car seat is secured to the base using these locking mechanisms. This design places high demands on the mechanical performance, stability, and ease of use of the locking mechanism.

[0004] Meanwhile, since people often operate car child restraint systems from the side of the car seat, a rotating child restraint system can effectively improve the user experience. However, the rotating mechanism further limits the design space of the locking mechanism, resulting in complex structures in existing car seat technologies, leaving room for improvement. Utility Model Content

[0005] To address the aforementioned technical problems, this application discloses a rotatable child seat mounting base, comprising:

[0006] Connecting frame for detachable connection to car seats;

[0007] A rotating disk is rotatably mounted on the connecting frame;

[0008] A first locking mechanism and a second locking mechanism are installed on the rotating disk. The first locking mechanism provides a first locking groove and a second locking groove, and the second locking mechanism provides a third locking groove and a fourth locking groove. Each locking groove opens upward in the direction of gravity and is equipped with a corresponding locking hook.

[0009] A drive arm is rotatably mounted on the rotating disk. One end of the drive arm is linked to the first locking mechanism, and the other end is linked to the second locking mechanism. The drive arm has a working position and a corresponding standby position in its rotation direction, which drive each lock hook to open the corresponding lock groove. When the drive arm is in the standby position, each lock hook closes the corresponding lock groove.

[0010] During the rotation of the rotating disk relative to the connecting frame, the first locking mechanism, the second locking mechanism, and the driving arm remain relatively stationary and move with the rotating disk.

[0011] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0012] In one embodiment, each locking mechanism includes:

[0013] A base is fixedly connected to the rotating disk, and the base provides a corresponding locking groove;

[0014] A locking hook is hinged to the base;

[0015] The sliding member is driven by the drive arm to move relative to the base, and the sliding member drives each locking hook to move relative to the base to open or close the corresponding locking groove.

[0016] In one embodiment, the drive arm cooperates with the middle of each locking mechanism, and the locking hooks are provided at both ends of each locking mechanism; the two locking hooks of the same locking mechanism move closer to each other to achieve synchronous opening of the corresponding locking slots.

[0017] In one embodiment, the drive arm further includes a traction member that drives itself to rotate, one end of the traction member acting on the end of the drive arm, and the other end of the traction member extending along the base and connected to an operating member exposed to the outside.

[0018] In one embodiment, the device further includes a housing fixed to the connecting frame and a receiving portion fixedly connected to the rotating disk. The receiving portion is provided with an adapter groove for receiving a basket or car seat. The adapter groove is recessed relative to the upper surface of the receiving portion, and each of the locking grooves extends into the adapter groove.

[0019] In one embodiment, the top of each locking groove is not higher than or flush with the upper surface of the receiving portion; or the top of each locking groove is slightly higher than the upper surface of the receiving portion.

[0020] In one embodiment, the adapter slot has two slots, which correspond to the first locking mechanism and the second locking mechanism respectively.

[0021] In one embodiment, the connecting frame defines a mounting plane, and the rotation plane of the rotating disk and the mounting plane intersect each other with an included angle ranging from 1 degree to 15 degrees.

[0022] In one embodiment, the system further includes indicating components, which are provided in multiples and correspond to each locking mechanism. Each indicating component includes:

[0023] The driving part has a free position protruding from the upper surface of the receiving part and a pressure-triggered position;

[0024] The indicator is linked to the drive unit. When the drive unit is in the triggered position, the indicator is exposed to the outside.

[0025] This application also discloses a child restraint system, including a baby carrier and a rotatable child seat mounting base as described in the above technical solution. The bottom of the baby carrier is provided with a first locking shaft and a second locking shaft. When the baby carrier and the rotatable child seat mounting base are connected, the first locking shaft is constrained by the first locking groove and the third locking groove, and the second locking shaft is constrained by the second locking groove and the fourth locking groove.

[0026] In the direction of travel of the vehicle, the basket has a rearward locking position and a side-to-side temporary position during the rotation of the rotary disc.

[0027] The technical solution disclosed in this application achieves a highly stable locking effect, a simple component matching relationship, and a rich design basis through the cooperation of the rotating disk and locking mechanism in the mounting base, thereby improving the user experience of child restraint systems.

[0028] The specific beneficial technical effects will be further explained in the specific implementation methods in conjunction with the specific structures or steps. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a child restraint system structure in one embodiment of this application;

[0030] Figure 2 for Figure 1 A schematic diagram of the structure of a child restraint system after the basket is rotated at a certain angle.

[0031] Figure 3 for Figure 1 A diagram illustrating the explosion of a child restraint system in China;

[0032] Figure 4This is a schematic diagram of a rotatable child seat mounting base structure in one embodiment of this application;

[0033] Figure 5 for Figure 4 A schematic diagram showing the movement and coordination of the components in the rotatable child seat mounting base;

[0034] Figure 6 A schematic diagram of the external structure of the mounting base for a rotatable child seat after it has been rotated to a certain angle;

[0035] Figure 7 for Figure 6 A schematic diagram of the internal structure of the rotatable child seat mounting base;

[0036] Figure 8 Side view of the mounting base for a rotatable child seat;

[0037] Figure 9 for Figure 8 An exploded view of the rotatable child seat mounting base.

[0038] The annotations in the figure are explained as follows:

[0039] 100. Connect the skeleton;

[0040] 200, Rotary disk; 210, Guide seat; 211, Guide wheel; 220, Positioning groove; 230, Positioning component; 240, Retaining groove;

[0041] 310. First locking mechanism; 311. First locking groove; 312. Second locking groove; 320. Second locking mechanism; 321. Third locking groove; 322. Fourth locking groove; 330. Lock hook; 340. Base; 350. Sliding member; 351. Friction reducing member;

[0042] 400. Drive arm; 401. Clearance notch; 410. Traction component; 510. Housing; 520. Receiving part; 521. Adaptor groove; 522. Guide cover;

[0043] 600, Indicator assembly; 610, Drive unit; 620, Indicator unit; 621, Viewing window; 630, Transmission component; 900, Mounting base; 910, Basket. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] It should be noted that when a component is said to be "connected" to another component, it can be directly connected to the other component or it can be connected to a component in between. When a component is said to be "set on" another component, it can be directly set on the other component or it may be set to a component in between.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0047] Child restraint systems generally include a mounting base 900 for connection to a car seat and an infant carrier 910 or car seat detachable from the mounting base 900. The mounting base 900 provides a stable mounting surface for restraining the occupant using the infant carrier 910 or car seat. To reduce the weight of the infant carrier 910 or car seat, the corresponding mechanisms for rotation and pitch adjustment in the child restraint system are generally located on the mounting base 900. After the infant carrier 910 or car seat is connected to the mounting base 900 via a locking mechanism, the aforementioned adjustments are achieved through the corresponding mechanisms on the mounting base 900. (For example, see attached image.) Figure 1 and attached Figure 2 As shown, in order to enable the infant carrier 910 or the child safety seat to rotate relative to the mounting base 900, the mounting base 900 is generally provided with a rotatable rotating disk 200 relative to the car seat. During the rotation of the rotating disk 200, the infant carrier 910 or the child safety seat connected to the rotating disk 200 through the locking mechanism can be locked in different orientations.

[0048] Combined with appendix Figure 3 To be continued Figure 9 In the illustrated embodiment, this application discloses a rotatable child seat mounting base, including a connecting frame 100, a rotating disk 200, a first locking mechanism 310, a second locking mechanism 320, and a drive arm 400.

[0049] The connecting frame 100 is used for a separable connection with the car seat to establish a stable mounting base, such as defining a mounting plane. The connecting frame 100 can achieve a stable connection through existing technologies, such as ISOFix, Latch, and one or more methods such as car seat belt fastening, which will not be elaborated further.

[0050] The rotating disk 200 is rotatably mounted on the connecting frame 100 and provides a base for rotation, for example, defining a plane of rotation. The plane of rotation and the mounting plane can be coincident, parallel, or intersecting. (See attached diagram.)Figure 9 In the illustrated embodiment, the rotation plane and the mounting plane intersect, with an included angle ranging from 1 degree to 15 degrees. (See attached...) Figure 9 In this design, the angle α between the rotating plane and the mounting plane ranges from 5 to 10 degrees, and the mounting plane is represented as a horizontal plane. However, in practice, the mounting plane may be tilted relative to the horizontal plane due to the support surface of the car seat, and the rotating plane will tilt synchronously. In addition to the central rotating shaft, the rotating disk 200's mechanical properties can be improved by guide seats 210 located radially outwards. Multiple guide seats 210 are provided and engage with the outer edge of the rotating disk 200. The guide seats 210 restrict the axial movement of the rotating disk 200 along its own rotating shaft. (See attached diagram.) Figure 5 and attached Figure 9 As shown, the guide seat 210 can be a C-shaped limiting structure, with the side edge of the rotating disk 200 located inside the opening of the C-shape; the guide seat 210 can also be a guide wheel 211 that abuts against the rotating disk 200. The guide wheel 211 can be set individually or in pairs and clamp the rotating disk 200 from both sides respectively.

[0051] The circumferential locking of the rotating disk 200 is achieved through a positioning mechanism, which includes a positioning groove 220 disposed on the rotating disk 200 and a positioning element 230 connected to the connecting frame 100. When the positioning element 230 and the positioning groove 220 are matched, the position of the rotating disk 200 relative to the connecting frame 100 is locked. Multiple positioning grooves 220 can be provided to achieve multiple positioning positions of the rotating disk 200, further enabling different orientations of the infant carrier 910 or the child safety seat. In some orientations, the infant carrier 910 or child safety seat needs to maintain its position but does not want it to be locked in that position, such as when the infant carrier 910 or child safety seat faces the side of the car seat for the occupant to enter or exit. Therefore, the rotating disk 200 is provided with a retaining groove 240. The positioning member 230 cooperates with the retaining groove 240 to temporarily hold the rotating disk 200 in position. When the rotating disk 200 is subjected to external force, the positioning member 230 and the retaining groove 240 can separate from each other. That is, the rotating disk 200 has a locking position where the positioning member 230 matches the positioning groove 220 and a temporary holding position where the positioning member 230 matches the retaining groove 240. (See attached...) Figure 5 and attached Figure 7 In the embodiment shown, the positioning groove 220 is an open positioning hole on the rotating disk 200, and the positioning member 230 passes through the positioning hole to achieve force cooperation between the two. The holding groove 240 is a recess on the rotating disk 200 and the outer edge of the recess smoothly transitions with the surrounding components. The positioning member 230 partially enters the recess to achieve positioning cooperation between the two.

[0052] The first locking mechanism 310, the second locking mechanism 320, and the drive arm 400 are mounted on the rotating disk 200 and rotate with it. During the rotation of the rotating disk 200 relative to the connecting frame 100, the first locking mechanism 310, the second locking mechanism 320, and the drive arm 400 remain relatively stationary. The drive arm 400 can also rotate relative to the rotating disk 200 to drive the first locking mechanism 310 and the second locking mechanism 320. Specifically, the first locking mechanism 310 provides a first locking groove 311 and a second locking groove 312, and the second locking mechanism 320 provides a third locking groove 321 and a fourth locking groove 322. Each locking groove opens upwards in the direction of gravity and is equipped with a corresponding locking hook 330. One end of the drive arm 400 is linked to the first locking mechanism 310, and the other end is linked to the second locking mechanism 320. The drive arm 400 has a working position that drives each locking hook 330 to open its corresponding locking slot, and a corresponding standby position in its rotational direction. When the drive arm 400 is in the standby position, each locking hook 330 closes its corresponding locking slot. The drive arm 400 directly or indirectly drives the relative movement between the locking hook 330 and the locking slot to switch the state of the locking mechanism.

[0053] The specific structure of the locking mechanism can be implemented using existing technology, or you can refer to the appendix. Figure 5 and attached Figure 7 In the illustrated embodiments, each locking mechanism includes:

[0054] The base 340 is fixedly connected to the rotating disk 200, and the base 340 provides a corresponding locking groove;

[0055] Locking hook 330, hinged to base 340;

[0056] The sliding member 350, driven by the drive arm 400, moves relative to the base 340, causing each locking hook 330 to move relative to the base 340 to open or close the corresponding locking groove. Furthermore, the sliding member 350 is provided with a friction-reducing member 351 for cooperating with the drive arm 400. The friction-reducing member 351 has a friction-reducing surface facing the drive arm 400 to improve the cooperation effect between the drive arm 400 and the sliding member 350. (See attached...) Figure 5 In the embodiment shown, the slider 350 is provided with a drive groove for engaging the end of the drive arm 400, and the friction reducing member 351 is a columnar structure disposed in the drive groove. The columnar structure abuts against the end of the drive arm 400 and achieves friction reduction through its own arc surface.

[0057] In this embodiment, the locking hook 330 includes a hinged end that is hinged to the base 340, a locking end that cooperates with the locking groove, and a controlled end that cooperates with the sliding member 350. Furthermore, the locking hook 330 is an integral structure, with the hinged end, locking end, and controlled end being different parts of the integral structure.

[0058] The drive arm 400 engages with the middle of each locking mechanism, and each locking mechanism has locking hooks 330 at both ends; the two locking hooks 330 of the same locking mechanism move closer together to achieve synchronous opening of the corresponding locking grooves. The two locking hooks 330 of the same locking mechanism may have the same or different structures. (See attached...) Figure 5 In the embodiment shown, the hinge end and locking end of one locking hook 330 are located at the two ends of the extension direction of the locking hook 330, and the controlled end is located between the hinge end and the locking end; the controlled end and locking end of the other locking hook 330 are located at the two ends of the extension direction of the locking hook 330, and the hinge end is located between the controlled end and the locking end. The above arrangement can realize the opposite or opposite movement of the locking hooks 330 at different positions under the premise of the unidirectional movement of the sliding member 350.

[0059] For the specific structure of the drive arm 400, please refer to the appendix. Figure 5 In the illustrated embodiment, the drive arm 400 is elongated with a central rotation center, and its two ends are respectively engaged with different locking structures. The drive arm 400 also includes a traction member 410 for driving its own rotation. One end of the traction member 410 acts on the end of the drive arm 400, and the other end extends along the base 340 and connects to the operating member exposed to the outside. Both ends of the drive arm 400 are provided with traction members 410 to increase the driving torque and improve the operating feel. The drive arm 400 may also have its own reset member to maintain a standby position, or it can be returned to the standby position by the reset member of the locking mechanism. The two ends of the drive arm 400 are narrowed into sheet-like structures and rest on the locking mechanism. The side edges of the sheet-like structures cooperate with the locking mechanism to drive the locking hook 330 to change its relative position. The operating member can be set at any position on the child seat mounting base 900, such as on the housing 510 or the receiving part 520 mentioned below. When there are multiple traction components 410, each traction component 410 can be independently equipped with an operating component to achieve a double lock, and each traction component 410 can also be linked to the same operating component to achieve synchronous drive.

[0060] In addition to the cooperation between the locking mechanism and the rotating disc 200, the child seat mounting base 900 also requires an external housing 510 for protection. (See attached image) Figure 6 To be continued Figure 9In the illustrated embodiment, the child seat mounting base 900 further includes a housing 510 fixed to the connecting frame 100 and a receiving portion 520 fixedly connected to the rotating disk 200. The receiving portion 520 is provided with an adapter groove 521 for receiving the infant carrier 910 or the car seat. The adapter groove 521 is recessed relative to the upper surface of the receiving portion 520, and each locking groove extends into the adapter groove 521. The adapter groove 521 is used to accommodate a portion of the infant carrier 910 or the car seat to improve connection stability and enhance the user experience. Furthermore, the adapter groove 521 has two grooves, corresponding to the first locking mechanism 310 and the second locking mechanism 320, respectively. The adapter groove 521 is provided with a guide cover 522 covering the locking groove and the locking hook 330. The guide cover 522 has an opening that aligns with the locking groove, allowing the infant carrier 910 or the car seat to engage with the locking groove and / or the locking hook 330 through the opening. The top of each locking groove is not higher than or flush with the upper surface of the receiving part 520. (See attached document) Figure 8 In the illustrated embodiment, some of the locking grooves are not higher than or flush with the upper surface of the receiving portion 520, while the top of some of the locking grooves is slightly higher than the upper surface of the receiving portion 520. Specifically, in the height direction, the protrusion distance of the locking groove above the upper surface of the receiving portion 520 is between 0.5 cm and 3 cm. Further, the protrusion distance is between 0.5 cm and 1.5 cm.

[0061] To further improve the stability of the infant carrier 910 or child safety seat connected to the mounting base 900, please refer to the attached... Figure 3 To be continued Figure 7 In the illustrated embodiment, the child seat mounting base 900 further includes multiple indicator components 600, each corresponding to a locking mechanism. Each indicator component 600 includes a drive unit 610 and an indicator part 620 linked to the drive unit 610. The drive unit 610 has a free position protruding from the upper surface of the receiving part 520 and a triggered position under pressure. When the drive unit 610 is in the triggered position, the indicator part 620 is exposed to the outside. The indicator components 600 are disposed inside the housing 510 or the receiving part 520 to reduce interference. The housing 510 or the receiving part 520 has a viewing window 621 exposing the indicator part 620. The drive unit 610 and the indicator part 620 can be integrally disposed or separately disposed, for example, attached to... Figure 5 and attached Figure 7In the illustrated embodiment, the indicating component 600 further includes a transmission member 630, which is hinged at the middle to the housing 510 or the receiving part 520, and its two ends are respectively linked to the driving part 610 and the indicating part 620. The indicating part 620 can respond to the triggered position and the free position of the driving part 610 through different parts of itself. For example, when the driving part 610 is in the triggered position, the first part of the indicating part 620 is exposed to the viewing window 621; when the driving part 610 is in the free position, the second part of the indicating part 620 is exposed to the viewing window 621. The indicating component 600 can visually indicate to the user the connection status of the infant carrier 910 or the child safety seat with the mounting base 900.

[0062] Based on the above and the appendix Figure 1 To be continued Figure 2 As shown, this application also discloses a child restraint system, including an infant carrier 910 and a rotatable child seat mounting base as described above. In the forward direction of the vehicle, the infant carrier 910 has a rearward locking position and a side-to-side temporary position during the rotation of the rotating disk 200.

[0063] The bottom of the baby carrier 910 is provided with a first locking shaft and a second locking shaft. When the baby carrier 910 is connected to the rotatable child seat mounting base, the first locking shaft is constrained by the first locking groove 311 and the third locking groove 321, and the second locking shaft is constrained by the second locking groove 312 and the fourth locking groove 322. Each locking shaft is constrained by the first locking mechanism 310 and the second locking mechanism 320. Only when all locking mechanisms are fully unlocked can the baby carrier 910 be separated from the mounting base 900.

[0064] When the basket 910 and the mounting base 900 need to be separated: the user can directly drive the drive arm 400 to rotate relative to the rotating disk 200 via the operating component or electronic control component. The two ends of the drive arm 400 respectively drive the sliding parts 350 of each locking mechanism to move relative to the base 340. Driven by the sliding parts 350, each locking hook 330 swings relative to the base 340 to open its locking slot. Each locking shaft of the basket 910 can then be removed from its corresponding locking slot. The direction of movement of each component can be found in the appendix. Figure 5 As indicated by the middle arrow.

[0065] When the basket 910 and the mounting base 900 need to be connected: the user places the bottom of the basket 910 into the corresponding adapter slot 521 and downwards. Each locking shaft can be aligned with the locking slot under the action of the guide cover 522. Each locking hook 330 swings under the force of the locking shaft to open the locking slot and achieve locking. During this process, the sliding member 350 is provided with an avoidance notch 401 to avoid interference with the drive arm 400. The avoidance notch 401 can be implemented by the drive slot mentioned above, or it can be set independently.

[0066] Understandably, the same procedure can be followed when the child safety seat and mounting base 900 are connected or separated.

[0067] In summary, the coordinated optimization of the rotating disc 200 and the locking mechanism in the mounting base 900 effectively avoids the complex internal structure of the prior art, and can effectively take into account the design requirements of rotation and separability between the baby carrier 910 and the mounting base 900, thus improving the user experience of the child restraint system.

[0068] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0069] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A rotatable child seat mounting base, characterized in that, include: Connecting frame for detachable connection to car seats; A rotating disk is rotatably mounted on the connecting frame; A first locking mechanism and a second locking mechanism are installed on the rotating disk. The first locking mechanism provides a first locking groove and a second locking groove, and the second locking mechanism provides a third locking groove and a fourth locking groove. Each locking groove opens upward in the direction of gravity and is equipped with a corresponding locking hook. A drive arm is rotatably mounted on the rotating disk. One end of the drive arm is linked to the first locking mechanism, and the other end is linked to the second locking mechanism. The drive arm has a working position and a corresponding standby position in its rotation direction, which drive each lock hook to open the corresponding lock groove. When the drive arm is in the standby position, each lock hook closes the corresponding lock groove. During the rotation of the rotating disk relative to the connecting frame, the first locking mechanism, the second locking mechanism, and the driving arm remain relatively stationary and move with the rotating disk.

2. The rotatable child seat mounting base according to claim 1, characterized in that, The locking mechanisms include: A base is fixedly connected to the rotating disk, and the base provides a corresponding locking groove; A locking hook is hinged to the base; The sliding member is driven by the drive arm to move relative to the base, and the sliding member drives each locking hook to move relative to the base to open or close the corresponding locking groove.

3. The rotatable child seat mounting base according to claim 2, characterized in that, The drive arm engages with the middle of each locking mechanism, and the locking hooks are provided at both ends of each locking mechanism; the two locking hooks of the same locking mechanism move closer to each other to achieve synchronous opening of the corresponding locking slots.

4. The rotatable child seat mounting base according to claim 2, characterized in that, The drive arm also includes a traction member that drives itself to rotate. One end of the traction member acts on the end of the drive arm, and the other end of the traction member extends along the base and is connected to an operating member exposed to the outside.

5. The rotatable child seat mounting base according to claim 1, characterized in that, It also includes a housing fixed to the connecting frame and a receiving part fixedly connected to the rotating disk. The receiving part is provided with an adapter groove for receiving a basket or car seat. The adapter groove is recessed relative to the upper surface of the receiving part, and each of the locking grooves extends into the adapter groove.

6. The rotatable child seat mounting base according to claim 5, characterized in that, The top of each of the locking grooves is not higher than or flush with the upper surface of the receiving part; or the top of each of the locking grooves is slightly higher than the upper surface of the receiving part.

7. The rotatable child seat mounting base according to claim 5, characterized in that, The adapter slot has two slots, which correspond to the first locking mechanism and the second locking mechanism respectively.

8. The rotatable child seat mounting base according to claim 5, characterized in that, It also includes indicator components, which are provided in multiples and correspond to each locking mechanism. Each indicator component includes: The driving part has a free position protruding from the upper surface of the receiving part and a pressure-triggered position; The indicator is linked to the drive unit. When the drive unit is in the triggered position, the indicator is exposed to the outside.

9. The rotatable child seat mounting base according to claim 1, characterized in that, The connecting frame defines a mounting plane, and the rotation plane of the rotating disk and the mounting plane intersect each other with an included angle ranging from 1 degree to 15 degrees.

10. A child restraint system, comprising an infant carrier and a rotatable child seat mounting base as described in any one of claims 1 to 9, wherein the bottom of the infant carrier is provided with a first locking shaft and a second locking shaft, and in the connected state of the infant carrier and the rotatable child seat mounting base, the first locking shaft is constrained by a first locking groove and a third locking groove, and the second locking shaft is constrained by a second locking groove and a fourth locking groove; In the direction of travel of the vehicle, the basket has a rearward locking position and a side-to-side temporary position during the rotation of the rotary disc.

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