Lateral sliding backrest and base separation mechanism of child safety seat

Abstract

The utility model discloses a lateral sliding backrest and base separating mechanism for a child safety seat, which relates to the field of safety seats and comprises a base, a turntable and a backrest. The base is rotationally matched with the turntable; the turntable is provided with a first guide rail and a first sliding piece; the bottom of the backrest is matched with the rotary table, the backrest is provided with a second guide rail and a second sliding part, the second guide rail is parallel to the first guide rail, the second sliding part is in sliding fit with the first guide rail, and the first sliding part is in sliding fit with the second guide rail. A locking assembly is arranged between the rotating disc and the backrest and used for limiting the backrest to slide in the direction of the first guide rail. The backrest and the base are separated in a sideslip mode, the guide rails are matched with the buckles to lock the base, dismounting and mounting are very convenient, the two guide rails and the sliding pieces are matched with each other, and stability is high.

Description

Technical Field

[0001] This utility model relates to the field of child safety seats, and in particular to a mechanism for separating the backrest and base of a child safety seat that allows for lateral sliding. Background Technology

[0002] A car safety seat is a device used to restrain children in a car, ensuring their safety after an external impact. A safety seat typically consists of a backrest and a seat. The backrest is fixed to the seat, which is in turn fixed to the car. Usually, for maintenance or other considerations, the backrest and seat are detachable. Currently, a common way the backrest and seat are connected is as follows: Patent document CN221678570U discloses a 360° rotating and sliding pull-out mechanism for a child safety seat. This mechanism uses guide rails, often lateral single-set C-shaped rails, which fasten to the seat from both sides. However, this design presents safety hazards in actual use. The combined weight of the seat and child is significant, and in the event of an external impact, a large force is generated. Under such a large force, the lateral single-set C-shaped rails are prone to flipping over, losing their restraining effect, and causing the seat and backrest to separate, resulting in poor reliability. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a backrest and base separation mechanism for lateral sliding of a child safety seat. The backrest and base are separated by lateral sliding, and the guide rail and buckle work together to lock the base. Disassembly and installation are very convenient. The two sets of guide rails and sliding parts work together to achieve high stability.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a mechanism for separating the backrest and base of a child safety seat that allows for lateral sliding, including a base, a turntable and a backrest;

[0005] The base rotates in conjunction with the turntable;

[0006] The turntable is provided with a first guide rail and a first sliding member;

[0007] The bottom of the backrest is adapted to the turntable. The backrest is provided with a second guide rail and a second sliding member. The second guide rail is arranged parallel to the first guide rail. The second sliding member is slidably fitted on the first guide rail. The second sliding member has only axial degree of freedom on the first guide rail. The first sliding member is slidably fitted on the second guide rail. The first sliding member has only axial degree of freedom on the second guide rail.

[0008] After the backrest slides along the direction of the first guide rail, the second sliding member can be separated from the first guide rail, and the first sliding member can be separated from the second guide rail; a locking component is provided between the turntable and the backrest, and the locking component is used to restrict the backrest from sliding along the direction of the first guide rail.

[0009] This solution uses two sets of guide rails and sliding parts to achieve a sliding fit between the turntable and the backrest, providing a more stable fit. Furthermore, since the two sets of guide rails and sliding parts only have axial freedom, they prevent separation and improve the stability of the turntable and backrest fit. A locking component restricts the backrest's axial freedom along the guide rails, ensuring the backrest is stably fixed at the turntable position. After releasing the locking component, the guide rails and sliding parts slide to their axial ends to separate, completing the disassembly of the turntable and backrest. This is very simple and convenient, and the assembly process is more stable.

[0010] Preferably, the first guide rail is a T-slot, and the second sliding member is a T-post. The T-post fits into the T-slot, which can effectively ensure that the backrest has only axial sliding freedom on the first guide rail, while the second sliding member is locked onto the first guide rail.

[0011] Preferably, the second guide rail is a strip-shaped hole provided on the backrest, and the first sliding member is a T-shaped post. The end of the strip-shaped hole is provided with an outlet portion, and the outer diameter of the end cap of the T-shaped post is smaller than that of the outlet portion. When the first sliding member is located at the outlet portion, the second sliding member is separated from the first guide rail. After passing through the strip-shaped hole, the T-shaped post can be hung back behind the strip-shaped hole to achieve adaptation, so that the first sliding member only has the axial sliding degree of freedom on the second guide rail. Since the outlet portion with a larger diameter is provided at the end of the strip-shaped hole, when the first sliding member moves to the outlet portion, it can be smoothly separated from the turntable from the outlet portion. At this time, the second sliding member is also separated from the first guide rail. Therefore, both sets of guide rails and sliding members are separated, thus realizing the separation of the backrest from the turntable.

[0012] Preferably, the locking component includes a locking block and a control block. The locking block is slidably engaged with the turntable, and the sliding direction of the locking block points towards the backrest. The backrest is provided with a locking hole adapted to the end of the locking block. When the first sliding member is adapted to the second guide rail, the locking block extends to the locking hole. The control block is laterally slidably engaged with the turntable. The locking block and the controlled block are linked. Moving the control block will cause the end of the locking block to separate from the locking hole. By operating the locking block to move it closer to or onto the locking hole on the backrest, the sliding freedom of the backrest in the guide rail direction can be restricted. Combined with the two sets of guide rails, a stable engagement between the backrest and the turntable can be achieved.

[0013] Preferably, a spring is provided between the turntable and the control block. A toggle pin is provided on the front side of the control block, and a slotted oblique hole is provided on the side of the locking block corresponding to the toggle pin. This slotted oblique hole is inclined relative to the sliding direction of both the locking block and the control block. The toggle pin extends into the slotted oblique hole. Normally, the toggle pin pushes the end of the locking block into the locking hole within the slotted oblique hole. When the control block drives the toggle pin to slide within the slotted oblique hole, it will cause the locking block to slide, either engaging or disengaging from the locking hole, thus providing more convenient control over locking the backrest.

[0014] Preferably, the locking hole is a strip-shaped window hole parallel to the first guide rail. That is, when the locking block is in the locking hole, the backrest can slide axially along the guide rail on the turntable with a distance of one end, so that the backrest can be slid out laterally, and then the locking block can be separated from the locking hole to remove the backrest.

[0015] Preferably, the locking block has a guide slope on the side corresponding to the side where the backrest slides in. This facilitates lateral movement of the locking block to slide it into the hole during backrest installation.

[0016] Preferably, the rear end of the control block is the operating end, which is located on the upper surface of the turntable. That is, the operating end of the control block is located on the upper surface that mates with the backrest. When the backrest is in contact with the turntable, it can cover the operating end of the control block, preventing accidental contact with the operating end of the control block and thus preventing the locking block from separating from the locking hole.

[0017] Preferably, the base is provided with a circular recess, the turntable rotates and engages with the circular recess, the side of the circular recess is provided with a side sliding notch corresponding to the second guide rail, the lower end of the backrest is provided with a connecting platform corresponding to the side sliding notch, and the first guide rail and the second sliding member are disposed on the connecting platform. During normal use, the turntable rotates, causing the connecting platform and the side sliding notch to misalign. Since the locking hole is a strip-shaped window, the locking block does not completely restrict the degree of freedom in the direction of the guide rail. However, the connecting platform is actually in the circular recess, which can restrict the degree of freedom of the connecting platform in the direction of the guide rail, that is, restrict the degree of freedom of the backrest in the direction of the guide rail. When disassembly is required, rotate the backrest so that the connecting platform and the side sliding notch are aligned. At this time, the circular recess will no longer restrict the degree of freedom of the connecting platform in the axial direction of the guide rail. The backrest can slide outward along the side sliding notch with the connecting platform for a distance equal to the length of the locking hole, until the operating end at the rear end of the control block is exposed. At this time, the two sets of guide rails and sliding parts are not separated, and the backrest and the turntable cannot be separated. At this time, by moving the rear end of the control block, the locking block is moved, and the end of the locking block separates from the locking hole. The connecting platform will then have complete freedom in the direction of the guide rail. At this time, the boss can be slid to separate the two sets of guide rails and sliding parts. Lifting the backrest will complete the separation of the backrest and the turntable.

[0018] Advantages of this utility model:

[0019] This utility model uses a side-sliding method to separate the backrest and the base. The guide rail and buckle work together to lock the base, making disassembly and installation very convenient and highly stable. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only eight of the drawings in this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is an external schematic diagram of an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the turntable and locking assembly according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the locking component according to an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the connecting platform of the backrest according to an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the internal initial state of an embodiment of the present utility model;

[0026] Figure 6 This is a schematic diagram of the internal backrest turning alignment with the side sliding notch in an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of an embodiment of the present invention where the inner backrest has slid to the side but the locking component has not been unlocked;

[0028] Figure 8 This is a schematic diagram of the internal backrest sliding sideways and the locking component being unlocked in an embodiment of the present utility model;

[0029] The components are as follows: 1. Base; 2. Backrest; 3. Turntable; 4. First guide rail; 5. First sliding member; 6. Second guide rail; 7. Second sliding member; 8. Outlet; 9. Locking block; 10. Control block; 11. Actuating pin; 12. Spring; 13. Strip-shaped oblique hole; 14. Guide oblique surface; 15. Operating end; 16. Side sliding notch; 17. Connecting platform; 18. Locking hole. Detailed Implementation

[0030] To enhance understanding of this utility model, it will be described in further detail below with reference to the accompanying drawings and embodiments. These embodiments are only used to explain this utility model and do not limit the scope of protection of this utility model.

[0031] Example

[0032] like Figure 1 As shown, a mechanism for separating the backrest and base of a child safety seat that allows for lateral sliding includes a base 1, a turntable 3, and a backrest 2; the base 1 rotatably engages with the turntable 3. Figure 2 As shown, the turntable 3 is provided with a first guide rail 4 and a first sliding member 5; the bottom of the backrest 2 is adapted to the turntable 3. Figure 4 As shown, the backrest 2 is provided with a second guide rail 6 and a second sliding member 7. The second guide rail 6 is arranged parallel to the first guide rail 4. The second sliding member 7 is slidably engaged on the first guide rail 4. The second sliding member 7 has only axial degree of freedom on the first guide rail 4. The first sliding member 5 is slidably engaged on the second guide rail 6. The first sliding member 5 has only axial degree of freedom on the second guide rail.

[0033] After the backrest 2 slides along the direction of the first guide rail 4, the second sliding member 7 can be separated from the first guide rail 4, and the first sliding member 5 can be separated from the second guide rail 6; a locking component is provided between the turntable 3 and the backrest 2, and the locking component is used to restrict the backrest 2 from sliding along the direction of the first guide rail 4.

[0034] This solution employs two sets of guide rails and sliding components to achieve a sliding fit between the turntable 3 and the backrest 2, providing a more stable fit. Furthermore, since the two sets of guide rails and sliding components only have axial freedom, they can prevent separation and improve the stability of the fit between the turntable 3 and the backrest 2. The locking component restricts the axial freedom of the backrest 2 on the guide rail, ensuring that the backrest 2 is stably fixed in the position of the turntable 3. After releasing the locking component, the guide rails and sliding components slide to their axial ends to separate, thus completing the disassembly of the turntable 3 and the backrest 2. This is very simple and convenient, and the fit is more stable during assembly.

[0035] The first guide rail 4 is a T-slot, and the second sliding member 7 is a T-post. The T-post fits into the T-slot, which can effectively allow the backrest 2 to have only axial sliding freedom on the first guide rail 4, while the second sliding member 7 is locked onto the first guide rail 4.

[0036] The second guide rail 6 is a strip-shaped hole set in the backrest 2. The first sliding member 5 is a T-shaped post. The end of the strip-shaped hole is provided with an outlet 8. The outer diameter of the end cap of the T-shaped post is smaller than that of the outlet 8. When the first sliding member 5 is located in the outlet 8, the second sliding member 7 is separated from the first guide rail 4. After passing through the strip-shaped hole, the T-shaped post can be hung back behind the strip-shaped hole to achieve adaptation. This allows the first sliding member 5 to have only axial sliding freedom in the second guide rail 6. Since the outlet 8 with a larger diameter is provided at the end of the strip-shaped hole, the first sliding member 5 can be smoothly separated from the turntable 3 from the outlet 8 when it moves to the outlet 8. At this time, the second sliding member 7 is also separated from the first guide rail 4. Therefore, both sets of guide rails and sliding members are separated, thus realizing the separation of the backrest 2 from the turntable 3.

[0037] Combination Figure 3 As shown, the locking assembly includes a locking block 9 and a control block 10. The locking block 9 is slidably engaged with the turntable 3, and the sliding direction of the locking block 9 points towards the backrest 2. The backrest 2 is provided with a locking hole 18 that matches the end of the locking block 9. When the first sliding member 5 is engaged with the second guide rail 6, the locking block 9 extends to the locking hole 18. The control block 10 is laterally slidably engaged with the turntable 3. The locking block 9 and the control block 10 are linked. Moving the control block 10 will cause the end of the locking block 9 to separate from the locking hole 18. By operating the locking block 9 to approach or be positioned in the locking hole 18 of the backrest 2 through the control block 10, the sliding freedom of the backrest 2 in the guide rail direction can be restricted. Combined with the two sets of guide rails, a stable engagement between the backrest 2 and the turntable 3 can be achieved.

[0038] A spring 12 is provided between the turntable 3 and the control block 10. A toggle pin 11 is provided on the front side of the control block 10. A strip-shaped oblique hole 13 is provided on the side of the locking block 9 corresponding to the toggle pin 11. The strip-shaped oblique hole 13 is inclined relative to the sliding direction of both the locking block 9 and the control block 10. The toggle pin 11 extends into the strip-shaped oblique hole 13. Normally, the toggle pin 11 pushes the end of the locking block 9 to extend into the locking hole 18 within the strip-shaped oblique hole 13. When the control block 10 drives the toggle pin 11 to slide within the strip-shaped oblique hole 13, it will cause the locking block 9 to slide, either engaging or disengaging from the locking hole 18, thus providing more convenient control over locking the backrest 2.

[0039] The locking hole 18 is a strip-shaped window hole parallel to the first guide rail 4. That is, when the locking block 9 is in the locking hole 18, the backrest 2 can slide axially along the guide rail on the turntable 3 with a distance of one end, so that the backrest 2 can slide out laterally, and then the locking block 9 can be separated from the locking hole 18 so that the backrest 2 can be removed.

[0040] The locking block 9 is provided with an inlet ramp 14 on the side where the backrest 2 slides in. This facilitates the lateral movement of the locking block 9 to slide into the hole when installing the backrest 2.

[0041] The rear end of the control block 10 is the operating end 15, which is located on the upper surface of the turntable 3. That is, the operating end 15 of the control block 10 is located on the upper surface that mates with the backrest 2. When the backrest 2 is mated with the turntable 3, it can cover the operating end 15 of the control block 10, preventing accidental operation that could cause the locking block 9 to separate from the locking hole 18.

[0042] The base 1 is provided with a circular recess, and the turntable 3 rotatably engages with the circular recess. A side sliding notch 16 is provided on the side of the circular recess corresponding to the second guide rail 6. A connecting platform 17 is provided at the lower end of the backrest 2 corresponding to the side sliding notch 16. The first guide rail 4 and the second sliding member 7 are disposed on the connecting platform 17. Figure 5 As shown, during normal user use, the turntable 3 rotates, causing the connecting platform 17 to be misaligned with the side sliding notch 16. Since the locking hole 18 is a strip-shaped window, the locking block 9 does not completely restrict its degree of freedom in the guide rail direction. However, the connecting platform 17 is actually in a circular recess, which can restrict the degree of freedom of the connecting platform 17 in the guide rail direction, thus restricting the degree of freedom of the backrest 2 in the guide rail direction. Combined with... Figure 6 As shown, when disassembly is required, rotate the backrest 2 so that the connecting platform 17 aligns with the side sliding notch 16. At this time, the circular recess will no longer restrict the axial freedom of the connecting platform 17 on the guide rail. Figure 7 As shown, the backrest 2, along with the connecting platform 17, can slide outwards along the side sliding notch 16 for a distance equal to the length of the locking hole 18, until the operating end 15 at the rear of the control block 10 is exposed. At this point, neither set of guide rails nor sliding parts are separated, and the backrest 2 and turntable 3 cannot be separated either. Figure 8 As shown, by moving the rear end of the control block 10, the locking block 9 moves, and the end of the locking block 9 separates from the locking hole 18. The connecting platform 17 will then have complete freedom in the direction of the guide rail. At this time, the boss can continue to slide, so that both sets of guide rails and sliding parts are separated. Lifting the backrest 2 will complete the separation of the backrest 2 from the turntable 3.

[0043] Advantages of this utility model:

[0044] This utility model uses a side-sliding method to separate the backrest 2 from the base 1. The guide rail and buckle work together to lock the base 1, making disassembly and installation very convenient. The two sets of guide rails and sliding parts work together to achieve high stability.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The embodiments described above are merely illustrative 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 utility model patent. 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 all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A child safety seat backrest to base disengagement mechanism for lateral slippage, characterised in that, Includes a base (1), a turntable (3), and a backrest (2); The base (1) rotates in conjunction with the turntable (3); The turntable (3) is provided with a first guide rail (4) and a first sliding member (5); The bottom of the backrest (2) is adapted to the turntable (3). The backrest (2) is provided with a second guide rail (6) and a second sliding member (7). The second guide rail (6) is arranged parallel to the first guide rail (4). The second sliding member (7) is slidably fitted on the first guide rail (4). The second sliding member (7) has only axial freedom on the first guide rail (4). The first sliding member (5) is slidably fitted on the second guide rail (6). The first sliding member (5) has only axial freedom on the second guide rail (6). After the backrest (2) slides along the direction of the first guide rail (4), the second sliding member (7) can be separated from the first guide rail (4), and the first sliding member (5) can be separated from the second guide rail (6); a locking component is provided between the turntable (3) and the backrest (2), and the locking component is used to restrict the backrest (2) from sliding along the direction of the first guide rail (4).

2. A child safety seat backrest-to-base disengagement mechanism for lateral slippage according to claim 1, characterized in that: The first guide rail (4) is a T-slot, and the second sliding member (7) is a T-post.

3. A child safety seat backrest-to-base disengagement mechanism for lateral slippage according to claim 1, characterized in that: The second guide rail (6) is a strip hole set on the backrest (2). The first sliding member (5) is a T-shaped post. The end of the strip hole is provided with an outlet (8). The outer diameter of the end cap of the T-shaped post is smaller than that of the outlet (8). When the first sliding member (5) is located in the outlet (8), the second sliding member (7) is separated from the first guide rail (4).

4. A child safety seat backrest-to-base disengagement mechanism for lateral slippage according to claim 1, characterized in that: The locking assembly includes a locking block (9) and a control block (10). The locking block (9) is slidably engaged with the turntable (3). The sliding direction of the locking block (9) points towards the backrest (2). The backrest (2) is provided with a locking hole (18) adapted to the end of the locking block (9). When the first sliding member (5) is adapted to the second guide rail (6), the locking block (9) extends to the locking hole (18). The control block (10) is slidably engaged with the turntable (3). The locking block (9) and the control block (10) are linked. Moving the control block (10) will cause the end of the locking block (9) to separate from the locking hole (18).

5. A child safety seat backrest-to-base disengagement mechanism for lateral slippage according to claim 4, wherein: A spring (12) is provided between the turntable (3) and the control block (10). A toggle pin (11) is provided on the front side of the control block (10). A strip-shaped oblique hole (13) is provided on the side of the locking block (9) corresponding to the toggle pin (11). The strip-shaped oblique hole (13) is inclined relative to the sliding direction of the locking block (9) and the control block (10). The toggle pin (11) extends to the strip-shaped oblique hole (13). Under normal conditions, the toggle pin (11) pushes the end of the locking block (9) to extend to the locking hole (18) in the strip-shaped oblique hole (13).

6. A child safety seat backrest-to-base disengagement mechanism for lateral slippage according to claim 5, wherein: The card hole (18) is a strip-shaped window hole parallel to the first guide rail (4).

7. A child safety seat backrest-to-base disengagement mechanism for lateral slippage according to claim 6, characterized in that: The card block (9) is provided with an inlet ramp (14) on the side where the backrest (2) slides in.

8. A child safety seat backrest-to-base disengagement mechanism for lateral slippage according to claim 6, characterized in that: The rear end of the control block (10) is the operation end (15), which is located on the upper surface of the turntable (3).

9. A child safety seat backrest-to-base disengagement mechanism for lateral slippage according to claim 8, characterized in that: The base (1) is provided with a circular recess, the turntable (3) rotates and engages with the circular recess, the side of the circular recess is provided with a side sliding notch (16) corresponding to the second guide rail (6), the lower end of the backrest (2) is provided with a connecting platform (17) corresponding to the side sliding notch (16), and the first guide rail (4) and the second sliding member (7) are provided on the connecting platform (17).

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