Unlocking structure for a child safety seat or a baby basket

By introducing a linkage mechanism into child safety seats or infant carriers, the problem of requiring two hands to unlock in existing technologies is solved, enabling the convenience of unlocking and turning with one hand.

CN120922003BActive Publication Date: 2026-07-31NINGBO WELLDON INFANT & CHILD SAFETY TECHNOLOGY CO LTD
View PDF 3 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NINGBO WELLDON INFANT & CHILD SAFETY TECHNOLOGY CO LTD
Filing Date
2025-09-16
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

Current child safety seats and infant car seats require both hands to unlock, making it impossible to unlock and rotate them with one hand.

Method used

It employs a linkage mechanism, which controls the locking mechanism on the base via the unlocking mechanism on the child safety seat or infant carrier, enabling one-handed unlocking and rotation.

Benefits of technology

It enables unlocking and rotation operations to be completed with one hand, improving ease of use.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120922003B_ABST
    Figure CN120922003B_ABST
Patent Text Reader

Abstract

This invention relates to an unlocking structure for a child safety seat or infant carrier, comprising a child safety seat or infant carrier; and a base disposed below the child safety seat or infant carrier; the base includes a fixed seat and a turntable rotatably connected to the fixed seat, the child safety seat or infant carrier being connected to the turntable, and a locking element being provided on the turntable; the child safety seat or infant carrier is provided with an unlocking element, and the unlocking element and the locking element are connected by a linkage mechanism. The unlocking structure for a child safety seat or infant carrier obtained by this invention has the following advantages: By employing a linkage mechanism, the unlocking element on the child safety seat or infant carrier can control the locking element on the base, allowing the user to unlock the child safety seat or infant carrier with their hand on it. After unlocking, this hand can directly rotate the child safety seat or infant carrier, achieving single-handed unlocking and rotation operations, making it more convenient to use.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This invention relates to the field of infant and child product technology, and in particular to an unlocking structure for child safety seats or infant carriers. Background Technology

[0002] A child car seat is a seat specifically designed for children of different weights (or age groups) and installed in a car to effectively improve children's safety while traveling. The European mandatory standard defines it as: a child safety protection system consisting of a seatbelt assembly or flexible components with interfaces, adjustment mechanisms, and accessories, capable of being secured to a motor vehicle. In the event of a car collision or sudden deceleration, it can reduce the impact force on the child and restrict the child's body movement, thereby mitigating injury.

[0003] In the prior art, for example, Chinese invention patent publication number CN110370993A discloses a child safety seat, including a base, an ISOFIX mechanism, a seat section, a buckle mechanism, a support leg mechanism, a central processing unit, and an alarm device. The base has a rotatable turntable, and the seat section is disposed on the turntable. Signal acquisition devices for detecting whether the structure is currently locked or unlocked are respectively provided at the turntable, the ISOFIX mechanism, the buckle mechanism, and the support leg mechanism. Each signal acquisition device is connected to the central processing unit. The alarm device is located at the front end of the base. Each signal acquisition device sends its detection signal to the central processing unit. If an unlocked signal is detected, the central processing unit controls the alarm device to issue an unlocking alarm. However, rotating the seat section of this child safety seat requires one hand to unlock it on the base and the other hand to rotate the seat section, making it impossible to operate with one hand. Summary of the Invention

[0004] One object of this application is to provide an unlocking structure for a child safety seat or infant carrier that can be unlocked and rotated with one hand.

[0005] The technical solution adopted in this application is: an unlocking structure for a child safety seat or infant carrier, comprising:

[0006] Child safety seats or infant carriers; and

[0007] The base is located under the child safety seat or infant car seat;

[0008] The base includes a fixed seat and a turntable rotatably connected to the fixed seat. The child safety seat or infant carrier is connected to the turntable. The turntable is equipped with a locking element, and the child safety seat or infant carrier is equipped with an unlocking element. The unlocking element and the locking element are connected by a linkage mechanism. The fixed seat is equipped with a fixing groove, which cooperates with the locking element. When the turntable is locked, part of the locking element is inserted into the fixing groove.

[0009] Compared with the prior art, the advantages of this application are that the locking element is used to lock the rotation of the fixed seat and the turntable; the linkage mechanism can be used to control the locking element on the base through the unlocking element on the child safety seat or infant carrier, so that the user can unlock the child safety seat or infant carrier with his / her hand. After unlocking, this hand can directly rotate the child safety seat or infant carrier, realizing the unlocking and rotation operation with one hand, which is more convenient to use.

[0010] In some embodiments of this application, the linkage mechanism includes an unlocking block and a pushing block. The unlocking block is located on the turntable and connected to the locking element, and the pushing block is located on the child safety seat or infant carrier and connected to the unlocking element. When the child safety seat or infant carrier is installed with the base, the pushing block and the unlocking block cooperate.

[0011] Furthermore, the unlocking block is provided with a guide groove, and the turntable is provided with a guide block, which cooperates with the guide groove; the unlocking block is provided with a guide hole, and the turntable is provided with a guide post, which cooperates with the guide hole.

[0012] Furthermore, the turntable is provided with a guide channel for the locking member to extend out. The locking member is T-shaped, with the vertical side of the T-shape passing through the guide channel. The top width of the locking member is greater than the width of the guide channel.

[0013] Furthermore, the unlocking block and the locking member are connected by a first steel wire rope.

[0014] Furthermore, the push block includes a sliding part and a pushing part. The child safety seat or infant carrier is provided with a sliding groove, the sliding part is located on the sliding groove, and the pushing part extends out of the sliding groove to cooperate with the unlocking block.

[0015] Furthermore, the unlocking component includes a handle and a hinge seat, the handle and the hinge seat are hinged together, the hinge seat is fixedly connected to a child safety seat or infant carrier, and the handle is connected to a push block.

[0016] Furthermore, the push block and the unlocking component are connected by a second steel wire rope.

[0017] Furthermore, the turntable is provided with adjacent notches and mounting slots, the mounting slots are connected to the notches, the unlocking block is located on the notches, and when the child safety seat or infant carrier is installed with the base, the pushing block is located on the mounting slot.

[0018] In some embodiments of this application, two unlocking devices are provided, with the two unlocking devices respectively located on both sides of the child safety seat or on both sides of the infant carrier. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0020] Figure 2 This is a schematic diagram of the base structure of Embodiment 1 of the present invention;

[0021] Figure 3 This is a schematic diagram of the base without the turntable in Embodiment 1 of the present invention;

[0022] Figure 4 This is a structural schematic diagram of the child safety seat according to Embodiment 1 of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the turntable in Embodiment 1 of the present invention. Figure 1 ;

[0024] Figure 6 This is a schematic diagram of the structure of the turntable in Embodiment 1 of the present invention. Figure 2 ;

[0025] Figure 7 This is a schematic diagram of the unlocking block in Embodiment 1 of the present invention;

[0026] Figure 8 yes Figure 3 Enlarged view of part A in the image;

[0027] Figure 9 This is a schematic diagram of the installation structure of the push block in Embodiment 1 of the present invention. Figure 1 ;

[0028] Figure 10 This is a schematic diagram of the installation structure of the push block in Embodiment 1 of the present invention. Figure 2 ;

[0029] Figure 11 This is a schematic diagram of the unlocking component of Embodiment 1 of the present invention. Figure 1 ;

[0030] Figure 12 This is a schematic diagram of the unlocking component of Embodiment 1 of the present invention. Figure 2 ;

[0031] Figure 13 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0032] Figure 14 This is a schematic diagram of the infant carrier of Embodiment 2 of the present invention;

[0033] Figure 15 This is a schematic diagram of the installation structure of the push block in Embodiment 2 of the present invention.

[0034] In the diagram: 1. Child safety seat; 2. Infant carrier; 3. Base; 4. Fixing seat; 5. Turntable; 6. Locking element; 7. Unlocking element; 8. Unlocking block; 9. Pushing block; 10. Guide groove; 11. Guide block; 12. Guide hole; 13. Guide post; 14. Guide channel; 15. First steel wire rope; 16. Sliding part; 17. Pushing part; 18. Sliding groove; 19. Handle; 20. Hinge seat; 21. Second steel wire rope; 22. Notch; 23. Mounting groove; 24. Fixing groove; 25. Connecting plate; 26. First slot; 27. Second slot; 28. Third slot; 29. ​​Fourth slot; 30. Fixing box; 31. Window. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.

[0036] In the description of this application, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0037] Those skilled in the art should understand that in the disclosure of this application, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.

[0038] Example 1:

[0039] This embodiment provides an unlocking structure for a child safety seat, such as... Figures 1-4 , Figure 8 As shown, it includes:

[0040] Child safety seat 1; and

[0041] The base 3 is located below the child safety seat 1;

[0042] The base 3 includes a fixed seat 4 and a turntable 5 rotatably connected to the fixed seat 4. The child safety seat 1 is connected to the turntable 5. The turntable 5 is provided with a locking member 6. When the turntable 5 is locked, part of the locking member 6 is inserted into the fixed seat 4. The child safety seat 1 is provided with an unlocking member 7, and the unlocking member 7 is connected to the locking member 6 through a linkage mechanism. In this embodiment, the fixed seat 4 is provided with a fixing groove 24, which cooperates with the locking member 6. That is, when the turntable 5 is locked, part of the locking member 6 is inserted into the fixing groove 24.

[0043] The locking element 6 is used to lock the relative rotation of the fixed seat 4 and the turntable 5. The linkage mechanism can be used to control the locking element 6 on the base 3 through the unlocking element 7 on the child safety seat 1, so that the user can unlock the child safety seat 1 with his / her hand. After unlocking, the hand can directly rotate the child safety seat 1, realizing the unlocking and rotation operation with one hand, which is more convenient to use.

[0044] To ensure the reliability of the linkage mechanism, it includes an unlocking block 8 and a pushing block 9. The unlocking block 8 is located on the turntable 5 and connected to the locking element 6. The pushing block 9 is located on the child safety seat 1 and connected to the unlocking element 7. When the child safety seat 1 and base 3 are installed, the pushing block 9 cooperates with the unlocking block 8. The unlocking block 8 is linked to the locking element 6, meaning that the locking element 6 can be controlled by the unlocking block 8. The pushing block 9 is linked to the unlocking element 7, meaning that the pushing block 9 can be controlled by the unlocking element 7. The pushing block 9 cooperates with the unlocking block 8, thereby causing the unlocking element 7 to link with the pushing block 9. The pushing block 9 pushes the unlocking block 8, and the unlocking block 8 links with the unlocking element 7, thus unlocking the fixed seat 4 and the turntable 5.

[0045] To ensure reliable movement of block 8, such as Figure 6 , Figure 7 As shown, the unlocking block 8 is provided with a guide groove 10, and the turntable 5 is provided with a guide block 11, which cooperates with the guide groove 10; the unlocking block 8 is provided with a guide hole 12, and the turntable 5 is provided with a guide post 13, which cooperates with the guide hole 12. The cooperation between the guide block 11 and the guide groove 10 restricts the movement of the unlocking block 8, ensuring that the movement of the unlocking block 8 can be stably linked with the unlocking component 7, thereby ensuring reliable rotational unlocking of the fixed base 4 and the turntable 5; the cooperation between the guide post 13 and the guide hole 12 restricts the movement of the unlocking block 8, ensuring that the movement of the unlocking block 8 can be stably linked with the unlocking component 7, thereby ensuring reliable rotational unlocking of the fixed base 4 and the turntable 5.

[0046] In this embodiment, a connecting plate 25 is provided between the guide block 11 and the guide post 13, which can improve the structural strength of the guide block 11 and the guide post 13.

[0047] For reliable movement of locking component 6, such as Figure 5As shown, the turntable 5 is provided with a guide channel 14 for the locking member 6 to extend. The locking member 6 is T-shaped, with its vertical T-shaped side passing through the guide channel 14. The top width of the locking member 6 is greater than the width of the guide channel 14. That is, when the locking member 6 is extended into position, its horizontal T-shaped side is flush with the inner wall of the turntable 5, and the top of the locking member 6 cannot pass through the guide channel 14. The guide channel 14 is used to guide the movement of the locking member 6, ensuring that the extension direction of the locking member 6 is reliable, which in turn ensures the reliable rotational locking of the fixed base 4 and the turntable 5.

[0048] To ensure a reliable connection between the unlocking block 8 and the locking component 6, the unlocking block 8 and the locking component 6 are connected by a first steel wire rope 15. The design of the first steel wire rope 15 not only connects the unlocking block 8 and the locking component 6, but also facilitates the placement of the unlocking block 8 and the locking component 6, which can be arranged at intervals.

[0049] In this embodiment, the unlocking block 8 is provided with a first slot 26, the locking member 6 is provided with a second slot 27, and the two ends of the first steel wire rope 15 are respectively located on the first slot 26 and the second slot 27; the first steel wire rope 15 can be a seat pull cable.

[0050] To ensure the structural reliability of block 9, such as Figure 9 , Figure 10 As shown, the push block 9 includes a sliding part 16 and a pushing part 17. The child safety seat 1 is provided with a sliding groove 18, the sliding part 16 is located on the sliding groove 18, and the pushing part 17 extends out of the sliding groove 18 to cooperate with the unlocking block 8. The cooperation between the sliding part 16 and the sliding groove 18 restricts the movement of the push block 9, ensuring that the movement of the push block 9 can be stably linked with the locking member 6, thereby ensuring reliable rotation and unlocking of the fixed seat 4 and the turntable 5.

[0051] In this embodiment, the child safety seat 1 is provided with a fixing box 30, and the fixing box 30 is provided with a window 31 for the push part 17 to extend out. The push part 17 extends through the window 31, and the window 31 restricts the range of movement of the push part 17; the sliding groove 18 is located on the fixing box 30.

[0052] To ensure the structural reliability of unlocking component 7, such as Figure 11 , Figure 12 As shown, the unlocking component 7 includes a handle 19 and a hinge seat 20. The handle 19 and the hinge seat 20 are hinged together. The hinge seat 20 is fixedly connected to the child safety seat 1. The handle 19 is connected to the push block 9. The handle 19 is designed to facilitate user operation. The hinge seat 20 provides the mounting position for the handle 19. Pulling the handle 19 can drive the push block 9.

[0053] To ensure a reliable connection between the push block 9 and the unlocking component 7, the push block 9 and the unlocking component 7 are connected by a second steel wire rope 21. One end of the second steel wire rope 21 is connected to the handle 19, and the other end is connected to the push block 9. The design of the second steel wire rope 21 not only connects the push block 9 and the unlocking component 7, but also facilitates the placement of the push block 9 and the unlocking component 7, allowing them to be arranged at intervals.

[0054] In this embodiment, the push block 9 is provided with a third slot 28, the handle 19 is provided with a fourth slot 29, and the two ends of the second wire rope 21 are located on the third slot 28 and the fourth slot 29 respectively.

[0055] To ensure reliable engagement between the push block 9 and the unlocking block 8, the turntable 5 is provided with adjacent notches 22 and mounting slots 23. The mounting slots 23 communicate with the notches 22, and the unlocking block 8 is located on the notches 22. When the child safety seat 1 and the base 3 are installed, the push block 9 is located on the mounting slots 23. The design of the notches 22 and the mounting slots 23 facilitates the positioning and installation of the push block 9 on the child safety seat 1; the adjacentity of the notches 22 and the mounting slots 23 allows the push block 9 to move between them, thereby enabling the push of the unlocking block 8.

[0056] In this embodiment, the mounting groove 23 is recessed downward to form the guide block 11 on the bottom surface.

[0057] To facilitate user operation, two unlocking components 7 are provided, with each component 7 positioned on one side of the child safety seat 1. The unlocking components 7 are located on both sides, allowing the user to easily unlock the seat from either side, regardless of which side it is installed on.

[0058] Example 2:

[0059] This embodiment provides an unlocking structure for an infant carrier, such as... Figures 13-15 As shown, it includes:

[0060] Infant carrier 2; and

[0061] The base 3 is located below the baby carrier 2;

[0062] The base 3 includes a fixed seat 4 and a turntable 5 rotatably connected to the fixed seat 4. The infant carrier 2 is connected to the turntable 5. The turntable 5 is provided with a locking member 6. When the turntable 5 is locked, part of the locking member 6 is inserted into the fixed seat 4. The infant carrier 2 is provided with an unlocking member 7. The unlocking member 7 and the locking member 6 are connected by a linkage mechanism. In this embodiment, the fixed seat 4 is provided with a fixing groove 24. The fixing groove 24 cooperates with the locking member 6, that is, when the turntable 5 is locked, part of the locking member 6 is inserted into the fixing groove 24.

[0063] The locking element 6 is used to lock the rotation of the fixed base 4 and the turntable 5. The linkage mechanism can be used to control the locking element 6 on the base 3 through the unlocking element 7 on the baby carrier 2, so that the user can unlock the baby carrier 2 with his / her hand. After unlocking, the hand can directly rotate the baby carrier 2, realizing the unlocking and rotation operation with one hand, which is more convenient to use.

[0064] To ensure the reliability of the linkage mechanism, it includes an unlocking block 8 and a pushing block 9. The unlocking block 8 is located on the turntable 5 and connected to the locking element 6, while the pushing block 9 is located on the infant carrier 2 and connected to the unlocking element 7. When the infant carrier 2 and base 3 are installed, the pushing block 9 engages with the unlocking block 8. The unlocking block 8 is linked to the locking element 6, meaning the locking element 6 can be controlled by the unlocking block 8. The pushing block 9 is linked to the unlocking element 7, meaning the pushing block 9 can be controlled by the unlocking element 7. The engagement of the pushing block 9 and the unlocking block 8 further causes the unlocking element 7 to engage with the pushing block 9, which in turn pushes the unlocking block 8. The unlocking block 8 then engages with the unlocking element 7, thus unlocking the connection between the fixed base 4 and the turntable 5.

[0065] To ensure the structural reliability of the push block 9, the push block 9 includes a sliding part 16 and a pushing part 17. The baby carrier 2 is provided with a sliding groove 18, the sliding part 16 is located on the sliding groove 18, and the pushing part 17 extends out of the sliding groove 18 to cooperate with the unlocking block 8. The cooperation between the sliding part 16 and the sliding groove 18 restricts the movement of the push block 9, ensuring that the movement of the push block 9 can be stably linked with the locking member 6, and ensuring reliable rotation and unlocking of the fixed base 4 and the turntable 5.

[0066] In this embodiment, the baby carrier 2 is provided with a fixing box 30, and the sliding groove 18 is located on the fixing box 30.

[0067] To ensure the structural reliability of the unlocking component 7, it includes a handle 19 and a hinge seat 20. The handle 19 and the hinge seat 20 are hinged together, and the hinge seat 20 is fixedly connected to the infant carrier 2. The handle 19 is connected to the push block 9. The handle 19 is designed for easy user operation, and the hinge seat 20 provides the mounting position for the handle 19, allowing the push block 9 to be driven when the handle 19 is pulled.

[0068] To ensure reliable engagement between the push block 9 and the unlock block 8, the turntable 5 is provided with adjacent notches 22 and mounting slots 23. The mounting slots 23 communicate with the notches 22, and the unlock block 8 is located on the notches 22. When the infant carrier 2 and the base 3 are installed, the push block 9 is located on the mounting slots 23. The design of the notches 22 and the mounting slots 23 facilitates the positioning and installation of the push block 9 on the infant carrier 2; the adjacentity of the notches 22 and the mounting slots 23 allows the push block 9 to move on both, thereby enabling the push of the unlock block 8.

[0069] To facilitate user operation, two unlocking components 7 are provided, with each component 7 positioned on one side of the infant carrier 2. The unlocking components 7 are located on both sides, allowing the user to easily unlock the carrier regardless of which side it is installed on.

[0070] Apart from the features mentioned above, all other features are the same as those in Example 1.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An unlocking mechanism for a child safety seat or infant carrier, comprising: Child safety seat (1) or infant carrier (2); and The base (3) is located under the child safety seat (1) or infant car seat (2); The base (3) is characterized by including a fixed seat (4) and a turntable (5) rotatably connected to the fixed seat (4). The child safety seat (1) or infant carrier (2) is connected to the turntable (5). The turntable (5) is provided with a locking element (6). The child safety seat (1) or infant carrier (2) is provided with an unlocking element (7). The unlocking element (7) and the locking element (6) are connected by a linkage mechanism. The fixed seat (4) is provided with a fixing groove (24). The fixing groove (24) cooperates with the locking element (6). When the turntable (5) is locked, part of the locking element (6) is inserted into the fixing groove (24). The linkage mechanism includes an unlocking block (8) and a pushing block (9). The unlocking block (8) is located on the turntable (5) and connected to the locking component (6). The pushing block (9) is located on the child safety seat (1) or infant carrier (2) and connected to the unlocking component (7). When the child safety seat (1) or infant carrier (2) is installed with the base (3), the pushing block (9) cooperates with the unlocking block (8). The unlocking block (8) is provided with a guide groove (10), and the turntable (5) is provided with a guide block (11), which cooperates with the guide groove (10); the unlocking block (8) is provided with a guide hole (12), and the turntable (5) is provided with a guide post (13), which cooperates with the guide hole (12); The push block (9) includes a sliding part (16) and a push part (17). The child safety seat (1) or infant carrier (2) is provided with a sliding groove (18). The sliding part (16) is located on the sliding groove (18), and the push part (17) extends out of the sliding groove (18) to cooperate with the unlocking block (8). The turntable (5) is provided with adjacent notches (22) and mounting slots (23). The mounting slots (23) are connected to the notches (22). The unlocking block (8) is located on the notches (22). When the child safety seat (1) or infant carrier (2) is installed with the base (3), the pushing block (9) is located on the mounting slots (23).

2. The unlocking structure for a child safety seat or infant carrier according to claim 1, characterized in that, The turntable (5) is provided with a guide channel (14) for the locking member (6) to extend out. The locking member (6) is T-shaped, and the vertical side of the T-shaped locking member (6) passes through the guide channel (14). The top width of the locking member (6) is greater than the width of the guide channel (14).

3. The unlocking structure for a child safety seat or infant carrier according to claim 1, characterized in that, The unlocking block (8) and the locking member (6) are connected by a first steel wire rope (15).

4. The unlocking structure for a child safety seat or infant carrier according to claim 1, characterized in that, The unlocking component (7) includes a handle (19) and a hinge seat (20), which are hinged together. The hinge seat (20) is fixedly connected to a child safety seat (1) or an infant carrier (2), and the handle (19) is connected to a push block (9).

5. The unlocking structure for a child safety seat or infant carrier according to claim 1, characterized in that, The push block (9) and the unlocking component (7) are connected by a second steel wire rope (21).

6. The unlocking structure for a child safety seat or infant carrier according to claim 1, characterized in that, Two unlocking components (7) are provided, and the two unlocking components (7) are respectively provided on both sides of the child safety seat (1) or on both sides of the infant carrier (2).