Child safety seat

Abstract

A child safety seat, comprising a seat body. The seat body comprises a seat (2) and a backrest (3) which is movably arranged with respect to the seat (2); the seat (2) has a first seat surface (211) and a second seat surface (221), and the backrest (3) has a backrest surface (311); the backrest (3) is movable with respect to the seat (2), so that the child safety seat has a first usage state and a second usage state; when the backrest (3) is in the first usage state, a loading space is formed between the backrest surface (311) and the first seat surface (211), enabling the child safety seat to be in a sitting usage state; and when the backrest (3) is in the second usage state, a loading space is formed between the backrest surface (311) and the second seat surface (221), enabling the child safety seat to be in a lying-down usage state.

Description

A child safety seat Technical Field

[0001] The present invention relates to the technical field of children's products, and in particular to a child safety seat. Background Art

[0002] A child safety seat is used when a child is riding in a car to improve the safety of the child. The child safety seat comprises a base and a seat body arranged on the base, wherein the seat body comprises a backrest and a seat.

[0003] In the prior art, most child safety seats are adjusted by sliding the entire seat body relative to the base when in use. This adjustment method cannot change the angle between the backrest and the seat, which reduces the comfort of the child safety seat in some use states.

[0004] Some child safety seats feature backrests that rotate relative to the seat. By rotating the backrest relative to the seat, the angle between the two can be adjusted, thereby adjusting the child safety seat's position. This adjustment method requires the backrest to rotate a relatively large angle when transitioning between a first position and a second position, which requires a relatively large operating space and increases the child safety seat's overall dimensions. This also makes the transition between the first and second positions difficult, making it inconvenient to use. Summary of the Invention

[0005] The purpose of the present invention is to address the deficiencies in the prior art and to provide a child safety seat that is easy to switch between various use states and has a small structural volume.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A child safety seat comprises a seat body, wherein the seat body comprises:

[0008] a seat having a first seating surface and a second seating surface that supports the child's buttocks;

[0009] a backrest, movably arranged relative to the seat, the backrest having a backrest surface for supporting the back of a child;

[0010] The backrest is movable relative to the seat so that the child safety seat has a first usage state and a second usage state; when the backrest is in the first usage state, a bearing space is formed between the backrest surface and the first seat surface, so that the child safety seat is in a sitting usage state; when the backrest is in the second usage state, a bearing space is formed between the backrest surface and the second seat surface, so that the child safety seat is in a lying usage state.

[0011] In some embodiments, in the first usage state, the backrest moves toward a side close to the seat to above the first seat surface;

[0012] In the second usage state, the backrest moves toward the side close to the seat to above the second seat surface.

[0013] In some embodiments, in the first usage state and the second usage state, the plane where the backrest surface is located has different inclination angles relative to the horizontal plane.

[0014] In some embodiments, in a first usage state, the first seat surface is used to support the child's buttocks, and the second seat surface is used to support the child's legs; in a second usage state, the second seat surface is used to support the child's buttocks.

[0015] In some embodiments, the first seat surface and the second seat surface are sequentially arranged in a front-to-rear direction, the first seat surface is arranged close to the backrest, and the first seat surface and the second seat surface are arranged relatively inclined with respect to each other;

[0016] In a first use state, a first angle is formed between the backrest surface and the first seat surface;

[0017] In the second use state, a second angle is formed between the backrest surface and the second seat surface;

[0018] The second angle is greater than the first angle, so that in the first use state, the child safety seat is used in a sitting position, and in the second use state, the child safety seat is used in a lying position.

[0019] In some embodiments, the first seat surface has a first front end portion and a first rear end portion arranged opposite to each other, and the first front end portion is connected to the second seat surface; in a first usage state, the backrest portion moves to the position of the first rear end portion; in a second usage state, the backrest portion moves to the position of the first front end portion.

[0020] In some embodiments, when the backrest is at the same position, the angle formed between the first seat surface and the backrest surface is smaller than the angle formed between the second seat surface and the backrest surface.

[0021] In some embodiments, the backrest includes a first backrest board and a second backrest board that can be slidably arranged on the first backrest board along the length extension direction of the first backrest board. The side of the first backrest board facing the seat is the backrest surface. When the backrest is in a first usage state, the lower end of the second backrest board is against the first seat surface; when the backrest is in a second usage state, the lower end of the second backrest board is against the second seat surface.

[0022] In some embodiments, the first backrest board has a receiving groove extending along its length direction, the lower part of the receiving groove is open, and the second backrest board can be slidably disposed in the receiving groove and can extend from the lower part of the receiving groove to the outside of the receiving groove.

[0023] In some embodiments, the backrest includes a first backrest board, and the side of the first backrest board facing the seat is the backrest surface. When the backrest is in a first usage state, the lower end of the first backrest board is against the first seat surface, or there is a first gap between the lower end of the first backrest board and the first seat surface; when the backrest is in a second usage state, there is a second gap between the lower end of the first backrest board and the second seat surface, and the second gap is larger than the first gap.

[0024] In some embodiments, the backrest can be arranged to rotate relative to the seat; or the backrest can be arranged to slide relative to the seat; or the backrest can be arranged to rotate and slide relative to the seat.

[0025] In some embodiments, the seat body also includes a bracket assembly, the seat is fixedly arranged on the bracket assembly, the backrest can be rotatably arranged on the bracket assembly, or the backrest can be slidably arranged on the bracket assembly, or the backrest can be rotatably and slidably arranged on the bracket assembly, and the child safety seat also includes a base, and the bracket assembly is detachably arranged on the base.

[0026] In some embodiments, the bracket assembly includes a first support rod and a second support rod intersecting at one end, the other end of the first support rod and the other end of the second support rod are respectively detachably connected to the base, the backrest is movably set on the first support rod and / or the second support rod, and the seat is fixedly set on the first support rod or the second support rod.

[0027] In some embodiments, the child safety seat further comprises a locking mechanism for locking the relative position of the bracket assembly and the base, and the locking mechanism is respectively provided at the connection between the first support rod and the base and at the connection between the second support rod and the base.

[0028] In some embodiments, the locking mechanism includes a locking member rotatably arranged on the base and a hook groove having an opening arranged on the base; when the locking mechanism is in a locked state, the opening of the hook groove is completely or partially closed by the locking member, and a clamping space for clamping the first support rod or the second support rod is formed between the locking member and the hook groove; when the locking mechanism is in an unlocked state, the locking member leaves the opening of the hook groove so that the opening of the hook groove is open.

[0029] Due to the application of the above technical solution, the present invention has the following advantages over the prior art: the child safety seat of the present invention has two seating surfaces, and the backrest can move relative to the seat to different seating surfaces, thereby forming a child-carrying space between the different seating surfaces. This allows the child safety seat to have multiple usage states and improves the comfort of the child safety seat during use. Furthermore, the two seating surfaces can be tilted to intersect with each other. Thus, when the child safety seat is switched between different usage states, the relative movement range of the backrest is limited, and the operating space required is also reduced, thereby facilitating the switching of the backrest between various usage states. Furthermore, the child safety seat is compact in size and lightweight, making it easier to transport. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a perspective schematic diagram of the child safety seat of this embodiment in a first usage state;

[0031] Figure 2 is a front view of the child safety seat of this embodiment in a first usage state;

[0032] Figure 3 is a schematic cross-sectional view along line AA in Figure 2;

[0033] Figure 4 is a perspective schematic diagram of the child safety seat of this embodiment in the second usage state;

[0034] Figure 5 is a front view of the child safety seat of this embodiment in the second usage state;

[0035] Figure 6 is a schematic cross-sectional view along line AA in Figure 5;

[0036] FIG7 is a perspective view of a child safety seat body according to an embodiment of the present invention;

[0037] FIG8 is a second perspective schematic diagram of the seat body of the child safety seat of this embodiment;

[0038] Figure 9 is a front view of the seat body of the child safety seat of this embodiment;

[0039] Figure 10 is a schematic cross-sectional view along line AA in Figure 9;

[0040] Figure 11 is a perspective schematic diagram of the base of the child safety seat of this embodiment;

[0041] Figure 12 is a partial enlarged schematic diagram of point A in Figure 11;

[0042] Figure 13 is a partial enlarged schematic diagram of point B in Figure 11;

[0043] Figure 14 is a front view of the base of the child safety seat of this embodiment;

[0044] Figure 15 is a schematic cross-sectional view along line AA in Figure 14;

[0045] Figure 16 is a perspective schematic diagram of the bracket assembly of the child safety seat of this embodiment;

[0046] FIG17 is a front view of the bracket assembly of the child safety seat of this embodiment;

[0047] FIG18 is a schematic cross-sectional view along line AA in FIG17 .

[0048] Among them: 1. base; 11. hook groove; 2. seat; 21. first seat plate; 211. first seat surface; 22. second seat plate; 221. second seat surface; 3. backrest; 31. first backrest plate; 311. backrest surface; 312. accommodating groove; 32. second backrest plate; 4. bracket assembly; 41. first support rod; 42. second support rod; 5. handle; 6. locking piece. DETAILED DESCRIPTION

[0049] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0050] In the following description, the directions "front," "rear," "left," "right," "up," and "down" are all based on the child safety seat being installed on a car seat, with the front of the car being the front and the rear being the rear. The left and right directions of the car correspond to the left and right directions in this embodiment, and the up and down directions of the car correspond to the up and down directions in this embodiment. The definitions of these directions are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and are not to be construed as limitations of the present invention.

[0051] As shown in FIG. 1 to FIG. 6 , the child safety seat of the present invention includes a base 1 and a seat body. The base 1 is connected to the car seat, and the seat body is for children to sit on.

[0052] As shown in FIG. 1 to FIG. 10 , the seat body includes a seat 2 and a backrest 3 , and the backrest 3 is arranged in front of or behind the seat 2 .

[0053] As shown in Figures 3, 6, and 10, the seat 2 has a first seating surface 211 and a second seating surface 221. Both the first seating surface 211 and the second seating surface 221 are designed to support a child's buttocks. The first seating surface 211 and the second seating surface 221 are arranged in a forward-backward direction, with the first seating surface 211 positioned adjacent to the backrest 3. The first seating surface 211 and the second seating surface 221 are arranged at an angle relative to each other, forming an angle therebetween. In this embodiment, one end of the first seating surface 211 and one end of the second seating surface 221 intersect at an angle.

[0054] As shown in FIG. 3 , FIG. 6 and FIG. 10 , the backrest 3 has a backrest surface 311 .

[0055] The backrest 3 is movable relative to the seat 2, so that the backrest 3 can be moved relative to the seat 2 to form different angles with the seat 2, thereby placing the child safety seat in different usage states. Here, the backrest 3 can be movable relative to the seat 2, either directly or indirectly.

[0056] In this embodiment, the child safety seat has a first use state and a second use state, as shown in FIG. 1 to FIG. 6 .

[0057] When the child safety seat is in the first usage state, the backrest 3 moves toward the side closer to the seat 2 to above the first seating surface 211. The backrest surface 311 or its extended surface intersects with the first seating surface 211, forming a first angle A between the backrest surface 311 and the first seating surface 211, as shown in Figures 1 and 3. In this usage state, the first seating surface 211 is used to support the child's buttocks, and the space between the backrest surface 311 and the first seating surface 211 forms a carrying space for the child.

[0058] When the child safety seat is in the second usage state, the backrest 3 moves toward the side closer to the seat 2 to above the second seating surface 221. The backrest surface 311 or its extended surface intersects with the second seating surface 221, forming a second angle B between the backrest surface 311 and the second seating surface 221, as shown in Figures 4 and 6. In this usage state, the second seating surface 221 is used to support the child's buttocks, and the space between the backrest surface 311 and the second seating surface 221 forms a carrying space for the child.

[0059] The above-mentioned carrying space refers to the space used to support the child's back and hips.

[0060] The second angle B is greater than the first angle A, so that the child safety seat is in a sitting position when in the first use state, and in a lying position when in the second use state.

[0061] In this embodiment, when the child safety seat is in the first use state and the second use state, the plane where the backrest surface 311 is located has different inclination angles relative to the horizontal plane.

[0062] Of course, in other embodiments, the child safety seat may also be arranged such that the plane on which the backrest surface 311 is located is tilted at the same angle relative to the horizontal plane in both the first and second usage positions. Furthermore, when the plane on which the backrest surface 311 is located is tilted at the same angle relative to the horizontal plane, the first seating surface 211 and the second seating surface 221 are tilted relative to each other, so that the angle formed between the first seating surface 211 and the backrest surface 311 is smaller than the angle formed between the second seating surface 221 and the backrest surface 311, i.e., the second angle B is larger than the first angle A, as shown in Figures 3 and 6 .

[0063] In this embodiment, when the child safety seat is in the first usage state, the second seat surface 221 is used to support the child's legs.

[0064] The first seating surface 211 has a first front end and a first rear end that are oppositely disposed, with the first front end being connected to the second seating surface 221. When the child safety seat is in the first use state, the backrest surface 311 moves to the first rear end position. When the child safety seat is in the second use state, the backrest surface 311 moves to the first front end position.

[0065] In this embodiment, the seat 2 includes a first seat plate 21 and a second seat plate 22 arranged in sequence along the front-to-back direction. One end portion of the first seat plate 21 and the second seat plate 22 intersect at an angle. The upper end surface of the first seat plate 21 is the first seat surface 211, and the upper end surface of the second seat plate 22 is the second seat surface 221.

[0066] As shown in Figures 3, 4, and 6, the backrest 3 includes a first backrest board 31 and a second backrest board 32. The second backrest board 32 is slidably mounted on the first backrest board 31 along the longitudinal extension of the first backrest board 31. The second backrest board 32 can slide downward relative to the first backrest board 31 and extend below the first backrest board 31. The end surface of the first backrest board 31 facing the seat 2 is the aforementioned backrest surface 311.

[0067] When the child safety seat is in the first usage state, the lower end of the second backrest plate 32 abuts the first seat surface 211, as shown in Figure 3. When the child safety seat is in the second usage state, the lower end of the second backrest plate 32 abuts the second seat surface 221, as shown in Figures 4 and 6. The provision of the second backrest plate 32 prevents the formation of a gap between the backrest 3 and the seat 2 in all usage states of the child safety seat, thereby reducing the comfort of the child safety seat during use.

[0068] Specifically, the first backrest board 31 has a receiving groove 312 extending along its length, with the lower portion of the receiving groove 312 being open. The second backrest board 32 is slidably disposed in the receiving groove 312 and can extend from the lower portion of the receiving groove 312 to the outside of the receiving groove 312, thereby abutting against the first seat surface 211 or the second seat surface 221.

[0069] Of course, the backrest 3 may also include only the first backrest board 31, with the end surface of the first backrest board 31 facing the seat 2 being the aforementioned backrest surface 311. When the child safety seat is in the first usage state, the lower end of the first backrest board 31 abuts against the first seat surface 211, or a first gap is defined between the lower end of the first backrest board 31 and the first seat surface 211. When the child safety seat is in the second usage state, a second gap is defined between the lower end of the first backrest board 31 and the second seat surface 221, the second gap being larger than the first gap.

[0070] The following embodiments are specifically provided in this application to illustrate how the backrest 3 can be movably arranged relative to the seat 2:

[0071] In a specific embodiment, the backrest 3 can be rotatably arranged relative to the seat 2. By rotating the backrest 3 relative to the seat 2, the child safety seat has the above-mentioned first usage state and second usage state, and can be switched between the first usage state and the second usage state, as shown in Figures 1 to 10.

[0072] Moreover, when the child safety seat is in the first usage state, the backrest 3 can rotate relative to the seat 2 so that the backrest surface 311 or its extended surface intersects with different positions on the first seat surface 211, thereby making the first angle A formed between the backrest surface 311 and the first seat surface 211 different. In this way, the child safety seat can also adjust the angle between the backrest surface 311 and the first seat surface 211 in the first usage state, thereby improving the comfort of the child safety seat when in use.

[0073] Similarly, when the child safety seat is in the second usage state, the backrest 3 can rotate relative to the seat 2 so that the backrest surface 311 or its extended surface intersects with different positions on the second seat surface 221, thereby making the second angle B formed between the backrest surface 311 and the second seat surface 221 different. In this way, the child safety seat can also adjust the angle between the backrest surface 311 and the second seat surface 221 in the second usage state, thereby improving the comfort of the child safety seat when in use.

[0074] In addition, when the use state of the child safety seat is adjusted by rotating the backrest 3 relative to the seat 2, the rotation angle of the backrest 3 is equivalent to the rotation angle of the backrest 3 in the prior art minus the angle between the first seat surface 211 and the second seat surface 221. This makes the rotation angle of the backrest 3 relatively small, thereby reducing the required operating space, making it easier to switch the child safety seat between various use states. At the same time, it also makes the structural size of the child safety seat smaller and the weight lighter, making it easier to carry the child safety seat.

[0075] In another specific embodiment, the backrest 3 can be slidably arranged relative to the seat 2. By sliding the backrest 3 relative to the seat 2, the child safety seat has the above-mentioned first use state and second use state, and can be switched between the first use state and the second use state.

[0076] Alternatively, in other embodiments, the backrest 3 is arranged to rotate and slide relative to the seat 2, so that the child safety seat can have the above-mentioned first use state and second use state, and can be switched between the first use state and the second use state.

[0077] The chair body further includes a support assembly 4, which is mounted on the base 1. The seat 2 is fixedly mounted on the support assembly 4. The backrest 3 is rotatably mounted on the support assembly 4, or the backrest 3 can be slidably mounted on the support assembly 4, or the backrest 3 can be both rotatably and slidably mounted on the support assembly 4.

[0078] In this embodiment, the bracket assembly 4 includes a first support rod 41 and a second support rod 42, each of which is fixedly connected or integrally arranged at one end. The bracket assembly 4 as a whole forms a downwardly facing V-shaped structure, as shown in Figures 16 to 18. The backrest 3 is movably mounted on the first support rod 41 and / or the second support rod 42, and the seat 2 is fixedly mounted on the first support rod 41 or the second support rod 42. When the backrest 3 moves relative to the seat 2 to adjust the use state of the child safety seat, the lower portion of the backrest 3 can move within the area enclosed by the V-shaped structure, thereby providing a relatively large space for the backrest 3 to move relative to the seat 2, as shown in Figures 3 and 6.

[0079] The bracket assembly 4 is detachably arranged on the base 1 , so that the seat body 1 can be detached from the base 1 as a whole.

[0080] The seat body also includes a handle 5, which is rotatably mounted on the bracket assembly 4. When the seat body is removed from the base 1, the handle 5 can be used to lift the seat body away from the base 1. When the seat body is mounted on the base 1 for use, the handle 5 can be rotated relative to the bracket assembly 4 to move closer to the backrest 3 or the seat 2.

[0081] In this embodiment, the other end of the first support rod 41 and the other end of the second support rod 42 are both detachably connected to the base 1 .

[0082] The child safety seat also includes a locking mechanism. When the bracket assembly 4 is connected to the base 1, the locking mechanism locks the relative position of the bracket assembly 4 and the base 1, so that the bracket assembly 4 cannot be removed from the base 1. After the locking mechanism is unlocked, the seat body can be removed from the base 1 as a whole.

[0083] In this embodiment, the locking mechanisms are respectively provided at the connection between the first support rod 41 and the base 1 and at the connection between the second support rod 42 and the base 1 .

[0084] Specifically, the locking mechanism includes a locking member 6, which is rotatably mounted on the base 1. The base 1 also includes a hook slot 11 with an opening, as shown in Figures 11 to 15. When the locking mechanism is in the locked state, the opening of the hook slot 11 is completely or partially closed by the locking member 6. A clamping space for clamping the first support rod 41 or the second support rod 42 is formed between the locking member 6 and the hook slot 11. When the bracket assembly 4 is connected to the base 1, the first support rod 41 and the second support rod 42 are respectively located in the clamping space at the corresponding position and cannot be disengaged from the corresponding clamping space, thereby preventing the bracket assembly 4 from being removed from the base 1. When the locking mechanism is in the unlocked state, the locking member 6 rotates relative to the base 1 and moves away from the opening of the hook slot 11, thereby opening the hook slot 11 and allowing the first support rod 41 and the second support rod 42 to disengage from the opening of the hook slot 11 at the corresponding position, thereby allowing the bracket assembly 4 to be separated from the base 1.

[0085] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A child safety seat, characterized in that: Comprising a seat body, the seat body comprising: A seat having a first seat surface and a second seat surface for supporting a child's buttocks; A backrest movably arranged relative to the seat, the backrest having a backrest surface for supporting a child's back; The backrest is movable relative to the seat so that the child safety seat has a first use state and a second use state; when the backrest is in the first use state, a carrying space is formed between the backrest surface and the first seat surface, so that the child safety seat is in a sitting use state; when the backrest is in the second use state, a carrying space is formed between the backrest surface and the second seat surface, so that the child safety seat is in a lying use state.

2. The child safety seat according to claim 1, wherein: In the first use state, the backrest moves towards the side close to the seat to above the first seat surface; In the second use state, the backrest moves towards the side close to the seat to above the second seat surface.

3. The child safety seat according to claim 2, wherein: In the first use state and the second use state, the inclination angle of the plane where the backrest surface is located relative to the horizontal plane is different.

4. The child safety seat according to claim 2, characterized in that: In the first use state, the first seat surface is used to support a child's buttocks, and the second seat surface is used to support a child's legs; in the second use state, the second seat surface is used to support a child's buttocks.

5. The child safety seat according to claim 2, wherein: The first seat surface and the second seat surface are arranged in sequence in the front-rear direction, the first seat surface is arranged close to the backrest, and the first seat surface and the second seat surface are inclined relative to each other; In the first use state, a first included angle is formed between the backrest surface and the first seat surface; In the second use state, a second included angle is formed between the backrest surface and the second seat surface; The second included angle is greater than the first included angle, so that in the first use state, the child safety seat is used in a sitting position, and in the second use state, the child safety seat is used in a lying position.

6. The child safety seat according to claim 5, characterized in that: The first seat surface has a first front end and a first rear end arranged opposite to each other, and the first front end is connected to the second seat surface; in the first use state, the backrest surface moves to the position of the first rear end; in the second use state, the backrest surface moves to the position of the first front end.

7. The child safety seat according to claim 1, characterized in that: When the backrest is at the same position, the included angle formed between the first seat surface and the backrest surface is smaller than the included angle formed between the second seat surface and the backrest surface.

8. The child safety seat according to claim 1, wherein: The backrest includes a first backrest plate and a second backrest plate slidably arranged on the first backrest plate along the length extension direction of the first backrest plate. The side of the first backrest plate facing the seat is the backrest surface. When the backrest is in the first use state, the lower end of the second backrest plate abuts on the first seat surface; when the backrest is in the second use state, the lower end of the second backrest plate abuts on the second seat surface.

9. The child safety seat according to claim 8, wherein: The first backrest plate has a receiving groove extending along its length direction, the lower part of the receiving groove is open, and the second backrest plate can be slidably arranged in the receiving groove and can extend out of the receiving groove from the lower part of the receiving groove.

10. The child safety seat according to claim 1, characterized in that: The backrest includes a first backrest plate, and the side of the first backrest plate facing the seat is the backrest surface. When the backrest is in the first use state, the lower end of the first backrest plate abuts against the first seat surface, or there is a first gap between the lower end of the first backrest plate and the first seat surface; when the backrest is in the second use state, there is a second gap between the lower end of the first backrest plate and the second seat surface, and the second gap is greater than the first gap.

11. The child safety seat according to claim 1, wherein: The backrest is rotatably arranged relative to the seat; or the backrest is slidably arranged relative to the seat; or the backrest is rotatably and slidably arranged relative to the seat.

12. The child safety seat according to claim 1 or 11, characterized in that: The seat body further includes a bracket assembly. The seat is fixedly arranged on the bracket assembly, and the backrest is rotatably arranged on the bracket assembly, or the backrest is slidably arranged on the bracket assembly, or the backrest is rotatably and slidably arranged on the bracket assembly. The child safety seat further includes a base, and the bracket assembly is detachably arranged on the base.

13. The child safety seat according to claim 12, characterized in that: The bracket assembly includes a first support rod and a second support rod with intersecting end portions. The other end of the first support rod and the other end of the second support rod are respectively detachably connected to the base. The backrest is movably arranged on the first support rod and / or the second support rod, and the seat is fixedly arranged on the first support rod or the second support rod.

14. The child safety seat according to claim 13, characterized in that: The child safety seat further includes a locking mechanism for locking the relative positions of the bracket assembly and the base. The locking mechanism is respectively arranged at the connection between the first support rod and the base and the connection between the second support rod and the base.

15. The child safety seat according to claim 14, characterized in that: The locking mechanism includes a locking member rotatably arranged on the base and a hook groove with an opening arranged on the base. When the locking mechanism is in the locked state, the opening of the hook groove is completely or partially closed by the locking member, and a clamping space for clamping the first support rod or the second support rod is formed between the locking member and the hook groove; when the locking mechanism is in the unlocked state, the locking member leaves the opening of the hook groove so that the opening of the hook groove is opened.

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