Child safety seat

Abstract

The utility model discloses a child safety seat, which relates to the technical field of child safety seats and comprises a base and a backrest, a connecting shaft is arranged on the base, a connecting hook capable of being buckled in the connecting shaft is arranged at the bottom of the backrest, at least two limiting ribs are arranged on the outer side wall of the connecting hook opposite to the connecting shaft, and a fixing rib is arranged on the side wall of the base. The limiting ribs at different positions are clamped to the fixing ribs so that angle adjustment of the backrest can be achieved, a top face is arranged at the top of the base in the thickness direction of the base, the maximum distance between the top face and the limiting ribs is D1, the distance between the top face and the fixing ribs is D2, D1-D2 is larger than or equal to 4 mm and smaller than or equal to 6 mm, and the use flexibility of the product can be improved. The headrest capable of sliding is arranged on the backrest, the handle is arranged on the headrest, fixed connection between the headrest and the backrest can be released by pulling the handle, the operation groove where the handle is embedded is formed in the headrest, the anti-clamping piece is arranged at the bottom of the handle, when the handle is pulled up, the anti-clamping piece can shield the operation groove to prevent hands from being clamped, and operation safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of child safety seats, in particular to a child safety seat. Background Art

[0002] At present, as people's awareness of children's safety in cars continues to increase, the use of child safety seats is becoming more and more common. In the relevant technology, the height of the headrest of a child safety seat can be adjusted to meet the height changes of children at different ages. The current headrest adjustment process requires pulling the handle to pull the switch. However, when the handle is pulled, a notch is exposed, and clothes, fingers, etc. are easily inserted into the notch. When the handle rebounds, it will cause foreign objects or hands to be clamped, causing safety problems; on the other hand, the current child seat backrest cannot adjust the angle, and the adaptability is poor when installed in different cars, affecting riding comfort. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a child safety seat that can improve the safety and convenience of adjustment operation.

[0004] A child safety seat according to an embodiment of the utility model comprises a base and a backrest, wherein:

[0005] A connecting shaft is provided on the base, and a connecting hook which can be buckled on the radial outer periphery of the connecting shaft is provided on the bottom of the backrest. At least two limiting ribs are provided on the outer wall of the connecting hook which is away from the connecting shaft. A fixing rib is provided on the side wall of the base which faces the connecting hook. The limiting ribs at different positions can be snapped onto the fixing ribs to realize the angle adjustment of the backrest.

[0006] A headrest is provided on the backrest, and a movable handle is provided on the headrest. By pulling the handle, the headrest can slide on the backrest and be adjusted along the height direction of the backrest. An operating groove for embedding the handle is provided in the headrest, and the handle can slide in the operating groove. An anti-pinch plate is provided at the bottom of the handle. When the handle is pulled up, the anti-pinch plate can cover the gap between the operating groove and the handle to achieve the anti-pinch function.

[0007] A child safety seat according to an embodiment of the utility model has at least the following beneficial effects: this embodiment includes a base and a backrest, a connecting shaft is provided on the base, a connecting hook that can be buckled on the radial outer periphery of the connecting shaft is provided at the bottom of the backrest, at least two limiting ribs are provided on the outer wall of the connecting hook that is away from the connecting shaft, and a fixing rib is provided on the side wall of the base facing the connecting hook, and the limiting ribs at different positions can be snapped on the fixing rib to achieve the angle adjustment of the backrest, which is conducive to improving the convenience of adjustment and improving the adaptability of the product in different usage scenarios. A movable handle is provided on the headrest, and pulling the handle can make the headrest slide on the backrest and adjust along the height direction of the backrest, an operating groove for embedding the handle is provided in the headrest, and the handle can slide in the operating groove, and an anti-pinch sheet is provided at the bottom of the handle, and when the handle is pulled up, the anti-pinch sheet can cover the gap between the operating groove and the handle to achieve the anti-pinch function, which helps to improve the convenience and safety of operation.

[0008] According to some embodiments of the utility model, along the height direction, a top surface is provided on the top of one side of the base close to the connecting hook, the maximum distance between the top surface and the limiting rib is D1, and the distance between the top surface and the fixing rib is D2, satisfying: 4mm≤D1-D2≤6mm;

[0009] According to some embodiments of the present invention, the limiting rib includes a first rib and a second rib that are spaced apart in a backrest height direction, and a minimum distance between the first rib and the second rib is at least 1.5 mm.

[0010] According to some embodiments of the utility model, there is a gap between the outer wall of the handle and the inner wall of the operating groove along the width direction of the base, and anti-pinch ribs are provided on both sides of the anti-pinch sheet. When the handle is pulled up, the anti-pinch ribs are blocked in the gap to realize the anti-pinch function.

[0011] According to some embodiments of the utility model, an adjustment mechanism is provided on the headrest, the adjustment mechanism includes a locking plate that can be buckled to the backrest, the handle has a pull rod portion extending in a direction close to the base, the end of the pull rod portion has an unlocking portion, and pulling up the handle can drive the unlocking portion to pull the locking plate to release the buckling of the locking plate and the backrest.

[0012] According to some embodiments of the utility model, a reset piece is provided on the headrest, the pull rod portion has a mounting cavity, and the reset piece elastically pushes against the bottom wall of the mounting cavity close to the base to achieve the reset of the handle.

[0013] According to some embodiments of the utility model, the backrest is provided with a reinforcing tube extending along its height direction, the headrest is slidably connected to the reinforcing tube, the reinforcing tube is provided with a plurality of clamping holes arranged along its length direction, and the locking plates can be buckled in different clamping holes to realize the position adjustment of the headrest.

[0014] According to some embodiments of the present invention, an inner wall of the installation cavity close to the back side has a plurality of reinforcing ribs, and the reinforcing ribs extend along the width direction of the installation cavity.

[0015] According to some embodiments of the present invention, along the thickness direction of the backrest, two opposite side walls of the backrest are provided with reinforcement grooves, and the reinforcement grooves are recessed on the backrest.

[0016] According to some embodiments of the present invention, the reinforcement groove includes a first reinforcement groove located on the backrest toward the headrest and a second reinforcement groove away from the first reinforcement groove. At least two first reinforcement grooves are provided along the height direction of the backrest.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is an axonometric view of a child safety seat in an embodiment of the utility model;

[0020] Figure 2 A cross-sectional view of a child safety seat in an embodiment of the utility model;

[0021] Figure 3 for Figure 2 A magnified view of center A;

[0022] Figure 4 for Figure 2 Magnified view of middle B;

[0023] Figure 5 It is a partial cross-sectional view of the backrest in the embodiment of the utility model;

[0024] Figure 6 for Figure 5 Enlarged view of middle C;

[0025] Figure 7 It is a partial cross-sectional view of the connection between the backrest and the headrest in the embodiment of the utility model;

[0026] Figure 8 for Figure 7 Enlarged view of middle D;

[0027] Fig. 9 for Figure 7 Enlarged view of middle E;

[0028] Fig.10 This is an axonometric view of the handle in the embodiment of the utility model;

[0029] Fig.11 It is a partial cross-sectional view of a headrest in an embodiment of the utility model;

[0030] Fig.12 for Fig.11 Enlarged view of middle F;

[0031] Fig.13 for Figure 1 Magnified view of middle G.

[0032] Reference numerals:

[0033] Backrest 100; connecting hook 101; first rib 102; second rib 103; first reinforcement groove 104; second reinforcement groove 105; reinforcement tube 106; clamping hole 107;

[0034] Headrest 110; reset member 111; operation slot 112; blocking portion 113; slider 114;

[0035] Adjustment mechanism 120; handle 121; anti-pinch sheet 122; anti-pinch rib 123; locking sheet 124; pull rod portion 125; installation cavity 126; reinforcing rib 127; unlocking portion 128; positioning column 129; first hook portion 130; second hook portion 131; traction portion 132; reinforcing rib 133; shielding sheet 134;

[0036] Base 140 ; ​​connecting shaft 141 ; fixing rib 142 ; top surface 143 ; plug-in hole 144 . DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0040] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0041] In the related art, the height of the headrest of a child safety seat can be adjusted to meet the height changes of children at different ages. The current headrest adjustment process requires pulling a handle to pull a switch. However, when the handle is pulled, a notch is exposed, and clothes, fingers, etc. can easily fit into the notch. When the handle rebounds, foreign objects or hands may be clamped, causing safety problems. On the other hand, the current child seat backrest cannot adjust the angle, and is not adaptable when installed in different cars, affecting ride comfort.

[0042] To solve the above problems, refer to Figure 1 and Figure 2 In an embodiment of the utility model, a child safety seat is provided, including a base 140 and a backrest 100, wherein a connecting shaft 141 is provided on the base 140, and a connecting hook 101 which can be buckled on the radial outer periphery of the connecting shaft 141 is provided at the bottom of the backrest 100. It can be understood that the backrest 100 can be rotated around the axis of the connecting shaft 141 to achieve angle adjustment.

[0043] Reference Figure 3 , at least two limiting ribs are provided on the outer side wall of the connecting hook 101 facing away from the connecting shaft 141, and a fixing rib 142 is provided on the side wall of the base 140 facing the connecting hook 101, and the limiting ribs at different positions can be snapped into the fixing rib 142 to achieve angle adjustment of the backrest 100. It can be understood that the base 140 has a plug-in hole 144 into which the connecting hook 101 can be plugged, the plug-in hole 144 is located on the radial outer side of the connecting shaft 141, and the fixing rib 142 is located on the side wall of the plug-in hole 144 opposite to the connecting shaft 141. When the connecting hook 101 is located in the plug-in hole 144, the limiting rib and the fixing rib 142 can be buckled to achieve angle limitation of the backrest 100.

[0044] Reference Figure 4 It can be understood that there are at least two limiting ribs, and the limiting ribs include a first rib 102 and a second rib 103 arranged at intervals along the height direction of the backrest 100, the first rib 102 is located above the second rib 103, and along the height direction of the backrest 100, the fixed rib 142 and the limiting rib both have an upward upper surface and a downward lower surface, when the lower surface of the fixed rib 142 abuts against the upper surface of the first rib 102, the backrest 100 is at a first angle relative to the base 140, and when the lower surface of the fixed rib 142 abuts against the upper surface of the second rib 103, the backrest 100 is at a second angle relative to the base 140, so as to realize the angle adjustment of the backrest 100.

[0045] Furthermore, along the height direction, a top surface 143 is provided at the top of the side of the base 140 close to the connecting hook 101, and the maximum distance between the top surface 143 and the limiting rib is defined as D1, and the distance between the top surface 143 and the fixing rib 142 is defined as D2. It should be noted that the maximum distance D1 between the top surface 143 and the limiting rib is the distance between the top surface 143 and the end point on the second rib 103 farthest from the connecting shaft 141 along the height direction; the distance D2 between the top surface 143 and the fixing rib 142 is the distance between the top surface 143 and the end point on the fixing rib 142 closest to the connecting shaft 141 along the height direction. Further, D1 and D2 satisfy: 4mm≤D1-D2≤6mm.

[0046] It is understandable that when D1-D2 is less than 4mm, the difference between the maximum distance between the top surface 143 and the limiting rib and the distance between the top surface 143 and the fixed rib 142 is small. Since there are at least two limiting ribs, the adjustable angle range between the backrest 100 and the base 140 is small, which cannot meet the use requirements; when D1-D2 is greater than 6mm, the difference between the maximum distance between the top surface 143 and the limiting rib and the distance between the top surface 143 and the fixed rib 142 is large, and the adjustable angle range between the backrest 100 and the base 140 is large. However, in actual use scenarios, the angle range of the backrest 100 has a certain reasonable value. Although expanding the adjustment range of the backrest 100 can improve the flexibility of use, the probability of using certain angle values ​​is low. Therefore, setting an overly large angle range will make it difficult for users to quickly adjust to a reasonable angle range, which will reduce the use experience. In summary, only when 4mm≤D1-D2≤6mm can the angle adjustment requirements of the backrest 100 be met and the use experience can be improved.

[0047] Furthermore, in some embodiments of the present application, the maximum distance D1 between the top surface 143 and the limiting rib is preferably 20 mm, and the distance D2 between the top surface 143 and the fixing rib 142 is preferably 15 mm, and at this time D1-D2 is 5 mm, which meets the angle adjustment requirements of the backrest 100.

[0048] Reference Figure 6, the minimum distance between the first rib 102 and the second rib 103 is at least 1.5mm. It can be understood that the first rib 102 and the second rib 103 protrude from the outer wall of the connecting hook 101 away from the connecting shaft 141, so a groove for inserting the fixing rib 142 is formed between the two. It is defined that there is a first intersection between the side of the first rib 102 close to the second rib 103 and the side wall of the connecting hook 101, and there is a second intersection between the side of the second rib 103 close to the first rib 102 and the side wall of the connecting hook 101. There is a straight line N1 connecting the first intersection and the second intersection. The length of N1 is the minimum distance between the first rib 102 and the second rib 103, and the maximum length of N1 is at least 1.5mm, which can ensure that the fixing rib 142 can be stably buckled between the first rib 102 and the second rib 103, so as to provide a stable angle limit for the backrest 100.

[0049] Reference Figure 5 , along the thickness direction of the backrest 100, the two opposite side walls of the backrest 100 are provided with reinforcement grooves, and the reinforcement grooves are recessed on the backrest 100. It can be understood that the backrest 100 can be formed by blow molding using plastic material. In order to reduce weight and save materials, the backrest 100 has a cavity inside. The reinforcement groove is helpful to increase the strength of the outer peripheral wall of the backrest 100, thereby effectively avoiding deformation or even structural damage during use. Further, the reinforcement groove includes a first reinforcement groove 104 located on the side of the backrest 100 facing the headrest 110 and a second reinforcement groove 105 away from the first reinforcement groove 104. Along the height direction of the backrest 100, at least two first reinforcement grooves 104 are provided, which helps to increase the area covered by the reinforcement groove on the outer wall of the backrest 100, thereby effectively increasing the structural strength of the backrest 100. It can be understood that along the height direction, multiple second reinforcement grooves 105 can also be provided to improve the structural strength of the backrest 100. Furthermore, along the height direction, the cross-sectional thickness of the backrest 100 gradually increases from top to bottom, so that the depth of the first reinforcement groove 104 near the upper part is less than the thickness of the first reinforcement groove 104 near the bottom, thereby keeping the cross-sectional area of ​​the internal cavity of the backrest 100 uniform, avoiding stress concentration caused by excessive depth of the first reinforcement groove 104 near the upper part of the backrest 100, thereby weakening the strength of the backrest 100.

[0050] Reference Figure 1 The headrest 110 is provided with a movable handle 121, and the headrest 110 can be slid on the backrest 100 and adjusted along the height direction of the backrest 100 by pulling the handle 121, referring to Figure 7It can be understood that the headrest 110 is provided with an adjustment mechanism 120, which includes a locking piece 124 that can be buckled on the backrest 100, and the handle 121 has a pull rod portion 125 extending in a direction close to the base 140, and the end of the pull rod portion 125 has an unlocking portion 128. Pulling up the handle 121 can drive the unlocking portion 128 to pull the locking piece 124 to release the buckling of the locking piece 124 and the backrest 100. Correspondingly, the backrest 100 is provided with a reinforcement tube 106, which extends along the height direction of the backrest 100, and the headrest 110 is provided with a slider 114 that can be slidably connected to the reinforcement tube 106. The height of the headrest 110 is adjusted by adjusting the height of the slider 114 on the reinforcement tube 106. At the same time, a plurality of clamping holes 107 are provided on the reinforcement tube 106 along its length direction, so that the slider 114 is clamped with the clamping holes 107 of different heights to achieve the height adjustment of the headrest 110.

[0051] Specifically, refer to Fig. 9 The locking piece 124 is pivotally connected to the slider 114. Along the height direction, the upper end of the locking piece 124 has a first hook 130, and the first hook 130 extends in the direction close to the headrest 110. The lower end of the locking piece 124 has a second hook 131, and the second hook 131 extends in the direction away from the headrest 110. At the same time, the unlocking portion 128 has a traction portion 132 protruding toward the direction close to the locking piece 124. It can be understood that when the second hook 131 is inserted into the card hole 107, the adjustment mechanism 120 is in a locked state, and the headrest 110 is fixed in the backrest 100; when the handle 121 is pulled, the traction portion 132 can pull the first hook 130 to make the locking piece 124 rotate, so that the second hook 131 is disengaged from the card hole 107, and the adjustment mechanism 120 is in an unlocked state, so that the headrest 110 can be adjusted in height.

[0052] Reference Figure 8 , a reset member 111 is provided on the headrest 110, the rod portion 125 has an installation cavity 126, the reset member 111 elastically pushes against the bottom wall of the installation cavity 126 close to the base 140, and at the same time, a blocking portion 113 extending in the direction close to the backrest 100 is provided on the headrest 110, and the top of the reset member 111 elastically abuts against the wall surface of the blocking portion 113 to achieve a downward thrust on the handle 121, thereby achieving the automatic reset function of the handle 121. It can be understood that the reset member 111 uses a spiral spring, and at the same time, a positioning column 129 is provided on the bottom wall of the installation cavity 126, and the positioning column 129 can be inserted into the reset member 111 to prevent the reset member 111 from shifting, so as to maintain a stable reset function.

[0053] Reference Fig.10The inner wall of the installation cavity 126 near the backrest 100 has a plurality of reinforcing ribs 127, which extend along the width direction of the installation cavity 126, and help to improve the strength of the side wall of the installation cavity 126, thereby reducing the deformation and fatigue of the pull rod portion 125 during the pulling process, and help to maintain a good reset effect. It can be understood that along the length direction of the pull rod portion 125, a plurality of reinforcing ribs 127 are arranged in the installation cavity 126, and at the same time, the wall surface of the installation cavity 126 where the reinforcing ribs 127 are arranged is also provided with reinforcing ribs 133, which extend along the length direction of the pull rod portion 125, and help to further improve the strength of the side wall of the installation cavity 126 and reduce deformation.

[0054] Reference Figure 1 , Fig.10 , Fig.11 and Fig.12 An operating groove 112 in which a handle 121 is embedded is provided in the headrest 110, and the handle 121 can slide in the operating groove 112. It can be understood that along the height direction, the length of the operating groove 112 is greater than the length of the handle 121, thereby providing space for the handle 121 to slide in the operating groove 112. When the adjustment mechanism 120 is in a locked state, the handle 121 is at the bottom of the operating groove 112, and when the handle 121 is raised, there is a gap between the bottom wall of the operating groove 112 and the bottom wall of the handle 121. An anti-pinch sheet 122 is provided at the bottom of the handle 121. When the handle 121 is pulled up, the anti-pinch sheet 122 can block the gap between the operating groove 112 and the handle 121 to achieve an anti-pinch function, which helps to improve the convenience and safety of operation. Furthermore, a shielding piece 134 is provided on the upper end of the handle 121 opposite to the anti-pinch piece 122. When the adjustment mechanism 120 is in a locked state, there is a gap between the top of the handle 121 and the top wall of the operating groove 112. The shielding piece 134 can shield the gap at the top of the handle 121, thereby further improving the protection effect.

[0055] It can be understood that the anti-pinch plate 122 can be arranged on the side of the handle 121 away from the backrest 100, and the shielding plate 134 can be arranged on the other side of the handle 121 opposite to the anti-pinch plate 122. In fact, the shielding plate 134 can also be arranged on the side of the handle 121 away from the backrest 100, and the anti-pinch plate 122 can be arranged on the other side of the handle 121 opposite to the shielding plate 134, which can also achieve the anti-pinch function.

[0056] Reference Figure 1 , Fig.10 and Fig.13, along the width direction of the base 140, there is a gap between the outer wall of the handle 121 and the inner wall of the operating groove 112, and anti-pinch ribs 123 are provided on both sides of the anti-pinch sheet 122. When the handle 121 is pulled up, the anti-pinch ribs 123 are blocked in the gap to achieve the anti-pinch function. Specifically, the anti-pinch ribs 123 protrude from the side of the handle 121 away from the backrest 100, and the anti-pinch ribs 123 extend along the height direction of the backrest 100 to cover the gap between the handle 121 and the operating groove 112, meeting the protection requirements.

[0057] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A child safety seat, comprising a base and a backrest, characterized in that: The base is provided with a connecting shaft, the backrest bottom is provided with a connecting hook that can be buckled on the radial outer periphery of the connecting shaft, the outer side wall of the connecting hook facing away from the connecting shaft is provided with at least two limiting ribs, the side wall of the base facing the connecting hook is provided with a fixing rib, and the limiting ribs at different positions can be snapped on the fixing rib to achieve the angle adjustment of the backrest; The backrest is provided with a headrest, and the headrest is provided with a movable handle. By pulling the handle, the headrest can slide on the backrest and be adjusted along the height direction of the backrest. The headrest is provided with an operating groove for embedding the handle, and the handle can slide in the operating groove. An anti-pinch sheet is provided at the bottom of the handle, and when the handle is pulled up, the anti-pinch sheet can cover the gap between the operating groove and the handle to achieve an anti-pinch hand function.

2. A child safety seat according to claim 1, characterized in that: Along the height direction, a top surface is provided on the top of one side of the base close to the connecting hook, the maximum distance between the top surface and the limiting rib is D1, and the distance between the top surface and the fixing rib is D2, satisfying: 4mm≤D1-D2≤6mm.

3. A child safety seat according to claim 1, characterized in that: The limiting rib comprises a first rib and a second rib which are arranged at intervals along the backrest height direction, and a minimum distance between the first rib and the second rib is at least 1.5 mm.

4. A child safety seat according to claim 1, characterized in that: Along the width direction of the base, there is a gap between the outer wall of the handle and the inner wall of the operating groove, and anti-pinch ribs are provided on both sides of the anti-pinch sheet. When the handle is pulled up, the anti-pinch ribs are blocked in the gap to realize the anti-pinch function.

5. A child safety seat according to claim 1, characterized in that: The headrest is provided with an adjustment mechanism, which includes a locking plate that can be buckled on the backrest. The handle has a pull rod portion extending in a direction close to the base, and the end of the pull rod portion has an unlocking portion. Pulling up the handle can drive the unlocking portion to pull the locking plate to release the buckling of the locking plate and the backrest.

6. A child safety seat according to claim 5, characterized in that: The headrest is provided with a reset piece, the pull rod portion has a mounting cavity, and the reset piece elastically pushes against the bottom wall of the mounting cavity close to the base to achieve the reset of the handle.

7. A child safety seat according to claim 6, characterized in that: The backrest is provided with a reinforcing tube extending along its height direction, the headrest is slidably connected to the reinforcing tube, the reinforcing tube is provided with a plurality of clamping holes arranged along its length direction, and the locking plate can be buckled in the clamping holes at different positions to realize the position adjustment of the headrest.

8. A child safety seat according to claim 6, characterized in that: The inner wall of the installation cavity close to the back-to-back side has a plurality of reinforcing ribs, and the reinforcing ribs extend along the width direction of the installation cavity.

9. A child safety seat according to claim 1, characterized in that: Along the thickness direction of the backrest, two opposite side walls of the backrest are provided with reinforcement grooves, and the reinforcement grooves are recessed on the backrest.

10. A child safety seat according to claim 9, characterized in that: The reinforcement groove comprises a first reinforcement groove located on the backrest and facing the headrest, and a second reinforcement groove away from the first reinforcement groove. At least two first reinforcement grooves are provided along the height direction of the backrest.

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