A child safety seat

Abstract

The application discloses a child safety seat and belongs to the field of child safety seats. The child safety seat comprises a seat safety belt, a backrest body and a headrest body. The backrest body is provided with a limiting hole at a middle position along the extension direction of the backrest body. The headrest body is movably arranged on one side of the backrest body along the extension direction of the backrest body. The headrest body is provided with a through hole. The backrest body and the headrest body have a gap therebetween. The limiting hole, the gap and the through hole form a channel. The seat safety belt is arranged in the channel. In the process of adjusting the headrest body from the middle position to the bottom position along the extension direction of the backrest body, the hole wall of the limiting hole can limit the seat safety belt, so that the seat safety belt on the side, away from the headrest body, of the backrest body is prevented from being brought into the side, close to the headrest body, of the backrest body by the headrest body in the process, the redundant length of the seat safety belt is effectively shortened, and the safety of the safety belt in binding the child is ensured.

Description

Technical Field

[0001] This application relates to the field of child safety seat technology, and more particularly to a child safety seat. Background Technology

[0002] Child safety seats provide safety for children traveling in cars. To accommodate children of different sizes and heights, the headrest of a child safety seat is generally height-adjustable, allowing the backrest to be positioned at different heights to provide comfortable head support for the child. In existing child safety seats, the safety seat anchor points on the backrest are usually located at the bottom of the backrest's extension. When the headrest is adjusted to the bottom, the seatbelt has excessive length, which can compromise the safety of the seatbelt in restraining the child. Utility Model Content

[0003] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a child safety seat.

[0004] To solve the above-mentioned technical problems, this application provides: A child safety seat for securing to a vehicle seat, the child safety seat comprising: Seat belts; A limiting hole is provided at the middle position of the back body along its extension direction; The headrest body is movably disposed on one side of the backrest body along the extension direction of the backrest body. The headrest body has a through hole, and there is a gap between the backrest body and the headrest body. The limiting hole, the gap, and the through hole form a channel, and the seat belt passes through the channel.

[0005] In addition, the child safety seat according to this application may also have the following additional technical features: In some embodiments of this application, the backrest body is provided with a guide rail along its extension direction, and the headrest body is slidably connected to the guide rail.

[0006] In some embodiments of this application, the guide rail has a first limit position and a second limit position, and when the head rest body is located in the first limit position, the through hole is located at or above the top of the limiting hole; When the headrest body is in the second extreme position, the through hole is located at or below the bottom of the limiting hole.

[0007] In some embodiments of this application, when the headrest body moves relative to the backrest body to a position where the through hole is below the bottom edge of the limiting hole, the gap between the through hole and the bottom edge of the limiting hole forms an adjustment channel, and the seat belt of the accommodating portion serves as an adjustment section.

[0008] In some embodiments of this application, the child safety seat further includes a seat body connected to the bottom of the backrest body. The seat belt includes a fixed section and a movable section. The fixed section is fixedly connected to the side of the seat body near the backrest body. The seat body has a mounting hole. One end of the movable section passes through the mounting hole, and the other end passes through the channel and is snapped into place with the fixed section. In some embodiments of this application, the child safety seat further includes a stop component disposed in the mounting hole for pressing or releasing the movable section.

[0009] In some embodiments of this application, the child safety seat further includes a first anti-slip member, which is connected to the side wall of the backrest body. The side wall of the backrest body has a first groove, and the first anti-slip member has a first limiting slot located within the first groove, which is used to limit the sliding of the shoulder strap of the vehicle seat belt in the first fixed state.

[0010] In some embodiments of this application, the child safety seat further includes a first mounting member, wherein the first anti-slip member is connected to the side wall of the backrest body via the first mounting member.

[0011] In some embodiments of this application, the child safety seat further includes a seat body and a second anti-slip member. The seat body is connected to the bottom of the backrest body, and the second anti-slip member is connected to the side wall of the seat body. The side wall of the seat body has a second groove, and the second anti-slip member has a second limiting slot. The second limiting slot is located in the second groove and is used to limit the sliding of the shoulder strap of the vehicle seat belt in the second fixed state.

[0012] In some embodiments of this application, the child safety seat further includes a second mounting member, the second anti-slip member being connected to the side wall of the seat body via the second mounting member.

[0013] Compared to existing technologies, the beneficial effects of this application are: This application discloses a child safety seat, comprising a seat belt, a backrest body, and a headrest body. The backrest body has a limiting hole, and the headrest body is movably disposed on one side of the backrest body along its extension direction. The headrest body has a through hole, and there is a gap between the backrest body and the headrest body. The limiting hole, the gap, and the through hole form a channel through which the seat belt passes. By placing the limiting hole at the middle position of the backrest body along its extension direction, the wall of the limiting hole can limit the seat belt during the adjustment of the headrest body from the middle position to the bottom position along the extension direction of the backrest body. This prevents the seat belt on the side of the backrest body away from the headrest body from being pulled into the backrest body on the side closer to the headrest body, thereby effectively shortening the redundant length of the seat belt and ensuring the safety of the child restrained by the seat belt. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This application shows a perspective view of the headrest body of a child safety seat in a first extreme position according to some embodiments of the present application; Figure 2 This application shows a perspective view of the headrest body of a child safety seat in a first extreme position in some embodiments; Figure 3 This invention provides a perspective view of the headrest body of a child safety seat in a second extreme position, as shown in some embodiments of the present application. Figure 4 This application shows a perspective view of the headrest body of a child safety seat in a second extreme position in some embodiments; Figure 5 It shows Figure 1 Enlarged schematic diagram of the structure of section A in the middle; Figure 6 A perspective view of a child safety seat in a second fixed state is shown in some embodiments of this application; Figure 7 It shows Figure 6 Enlarged schematic diagram of the structure of section B in the middle; Figure 8 This application shows perspective views of a child safety seat and a vehicle seat belt in a first fixed state in some embodiments; Figure 9This application shows a perspective view of a child safety seat and a vehicle seat belt in a second fixed state in some embodiments; Figure 10 It shows Figure 1 A cross-sectional view of a child safety seat; Figure 11 It shows Figure 3 A cross-sectional view of a child safety seat.

[0016] Explanation of key component symbols: 100- Child safety seat; 110 - Back against the main body; 111 - Limiting hole; 112 - Guide rail; 113 - First groove; 114 - Gap; 120 - Head rests against body; 121 - Through hole; 130 - First anti-slip component; 131 - First limiting slot; 140 - First mounting component; 150 - Base body; 151 - Second groove; 152 - Mounting hole; 160 - Second anti-slip component; 161 - Second limiting slot; 170 - Second mounting component; 180 - Seat belt; 181 - Fixed section; 182 - Flexible section; 190 - Stop assembly; 210 - Shoulder strap; 220 - Waist belt; 230 - Movable buckle. Detailed Implementation

[0017] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0018] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0020] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] like Figure 1 and Figure 2 As shown, an embodiment of this application provides a child safety seat 100 for being secured to a vehicle seat. The child safety seat 100 includes a seat belt 180, a backrest body 110, and a headrest body 120.

[0023] See also Figure 3 and Figure 4 The backrest body 110 has a limiting hole 111 at its midpoint along its extension direction. The headrest body 120 is movably disposed on one side of the backrest body 110 along its extension direction. The headrest body 120 has a through hole 121. There is a gap 114 between the backrest body 110 and the headrest body 120. The limiting hole 111, the gap 114, and the through hole 121 form a channel, through which the seat belt 180 passes.

[0024] The child safety seat 100 provided in the embodiments of this application includes a seat belt 180, a backrest body 110 and a headrest body 120. The backrest body 110 has a limiting hole 111. The headrest body 120 is movably disposed on one side of the backrest body 110 along the extending direction of the backrest body 110. The headrest body 120 has a through hole 121. There is a gap 114 between the backrest body 110 and the headrest body 120. The limiting hole 111, the gap 114 and the through hole 121 form a channel through which the seat belt 180 passes. By setting the limiting hole 111 at the middle position of the backrest body 110 along its extension direction, the wall of the limiting hole 111 can limit the seat belt 180 during the process of adjusting the headrest body 120 from the middle position to the bottom position along the extension direction of the backrest body 110. This prevents the seat belt 180 on the side of the backrest body 110 away from the headrest body 120 from being pulled into the side of the backrest body 110 close to the headrest body 120, thereby effectively shortening the redundant length of the seat belt 180 and ensuring the safety of the child restrained by the seat belt.

[0025] like Figure 1 and Figure 3 As shown, in one embodiment of this application, the backrest body 110 is provided with a guide rail 112 along its extension direction, and the headrest body 120 is slidably connected to the guide rail 112.

[0026] This allows the headrest body 120 to be slidably disposed on one side of the backrest body 110 along the extension direction of the backrest body 110, thereby enabling the headrest body 120 to be positioned at different heights relative to the backrest body 110, thus providing comfortable head support for children.

[0027] For example, the guide rail 112 is provided with multiple gear slots, which are spaced apart along the extension direction of the guide rail 112. The headrest body 120 is provided with a locking protrusion that engages with the gear slot, so that the headrest body 120 can maintain the height position after the height position is adjusted under the locking action of the locking protrusion and the gear slot.

[0028] In other embodiments, the headrest body 120 is provided with a plurality of position slots, which are spaced apart along the extension direction of the headrest body 120. The guide rail 112 is provided with a snap-fit ​​protrusion that engages with the position slot, so that the headrest body 120 can maintain the height position after the height position is adjusted by the snap-fit ​​cooperation between the snap-fit ​​protrusion and the position slot.

[0029] like Figures 1 to 4As shown in the above embodiments of this application, the guide rail 112 has a first extreme position and a second extreme position. When the headrest body 120 is located in the first extreme position, the through hole 121 is located at or above the top of the limiting hole 111. When the headrest body 120 is located in the second extreme position, the through hole 121 is located at or below the bottom of the limiting hole 111.

[0030] In this embodiment, by setting the through hole 121 to be located at or below the bottom of the limiting hole 111 when the headrest body 120 is at the second extreme position of the guide rail 112, the hole wall of the limiting hole 111 can limit the seat belt 180 during the process of adjusting the headrest body 120 along the guide rail 112 from the middle position of the backrest body 110 to the second extreme position of the guide rail 112. This prevents the seat belt 180 on the side of the backrest body 110 away from the headrest body 120 from being pulled into the side of the backrest body 110 close to the headrest body 120, thereby effectively shortening the redundant length of the seat belt 180 and ensuring the safety of the child restrained by the seat belt.

[0031] It is understandable that the first extreme position is located at or above the top of the guide rail 112, and the second extreme position is located at or below the bottom of the guide rail 112.

[0032] like Figure 10 and Figure 11 As shown, in one embodiment of this application, when the headrest body 120 moves relative to the backrest body 110 to the point where the through hole 121 is below the bottom edge of the limiting hole 111, the gap 114 between the through hole 121 and the bottom edge of the limiting hole 111 forms an adjustment channel, and the seat belt 180 of the accommodating portion serves as the adjustment section.

[0033] Understandably, when the headrest body 120 is at its lowest point, tightening the seat belt 180 locks it in place. At this time, pulling the headrest body 120 upwards allows it to be adjusted further. That is, when the stop assembly 190 is not activated, the adjustment section allows the headrest body 120 to move upwards relative to the backrest body 110, improving the ease of adjustment of the headrest body 120.

[0034] like Figures 1 to 4As shown, in one embodiment of this application, the child safety seat 100 further includes a seat body 150, which is connected to the bottom of the backrest body 110. The seat belt 180 includes a fixed section 181 and a movable section 182. The fixed section 181 is fixedly connected to the side of the seat body 150 near the backrest body 110. The seat body 150 has a mounting hole 152. One end of the movable section 182 passes through the mounting hole 152, and the other end passes through the channel and is snapped into connection with the fixed section 181.

[0035] In this embodiment, the fixed segment 181 is fixedly connected to the side of the seat body 150 near the back of the body 110. One end of the movable segment 182 is inserted through the mounting hole 152 of the seat body 150, and the other end of the movable segment 182 is inserted through the channel and snapped into the fixed segment 181. Under the snapping action of the movable segment 182 and the fixed segment 181, the child is stably restrained on the child safety seat 100. When it is necessary to release the restraint of the child, the movable segment 182 and the fixed segment 181 are separated to make the snapping between them invalid.

[0036] like Figure 1 and Figure 3 As shown in the above embodiments of this application, the child safety seat further includes a stop assembly 190, which is disposed in the mounting hole 152 and is used to press or release the movable segment 182.

[0037] In this embodiment, by providing a stop component 190 for tightening or loosening the movable segment 182 in the mounting hole 152, the user can manually adjust the redundant length of the seat belt 180 according to the position of the headrest body 120 relative to the backrest body 110, thereby ensuring the safety of restraining the child.

[0038] like Figure 1 and Figure 5 As shown, in any of the above embodiments of this application, the child safety seat 100 further includes a first anti-slip member 130. The first anti-slip member 130 is connected to the side wall of the backrest body 110. The side wall of the backrest body 110 is provided with a first groove 113. The first anti-slip member 130 is provided with a first limiting slot 131. The first limiting slot 131 is located in the first groove 113 and is used to limit the sliding of the shoulder strap of the vehicle seat belt in the first fixed state of the child safety seat 100.

[0039] In this embodiment, the first anti-slip member 130 is connected to the side wall of the backrest body 110. By opening a first groove 113 on the side wall of the backrest body 110 and opening a first limiting groove 131 in the first groove 113 on the first anti-slip member 130, the path of the shoulder strap bends from the side wall of the backrest body 110 into the first limiting groove 131 in the first groove 113, and then bends in the opposite direction from the first limiting groove 131 in the first groove 113 to the side wall of the backrest body 110, so as to achieve a tensioning effect, making the shoulder strap fit tightly against the side wall of the backrest body 110 and the groove wall of the first limiting groove 131, increasing the sliding friction. Thus, when the vehicle collides or brakes suddenly, the probability of the shoulder strap sliding relative to the backrest body 110 can be effectively reduced, thereby effectively improving the safety of the child safety seat 100 restrained by the vehicle seat belt.

[0040] It should be noted that the first fixed state is the state in which the child safety seat 100 is installed facing forward on the vehicle seat.

[0041] like Figure 1 and Figure 8 As shown, it can be understood that one end of the vehicle seat belt is movably connected to the vehicle, and the other end is fixedly connected to the vehicle seat. The vehicle seat has a slot, and the vehicle seat belt has a movable buckle 230. The movable buckle 230 is slidably fitted onto the vehicle seat belt and can engage with the slot to divide the vehicle seat belt into a shoulder strap 210 and a lap belt 220. The shoulder strap 210 is movably connected to the vehicle, and the lap belt 220 is fixedly connected to the vehicle seat. When the child safety seat 100 is installed face-up on the vehicle seat, the shoulder strap 210 passes sequentially through the first limiting slot 131 and the side of the backrest body 110 near the seat body 150, and the lap belt 220 passes through the side of the backrest body 110 near the seat body 150, and is locked by engaging with the slot through the movable buckle to stably bind the child safety seat 100 to the vehicle seat. Specifically, the shoulder strap 210 bends from the side wall of the backrest body 110 into the first limiting groove 131 located in the first groove 113, and then bends in the opposite direction from the first limiting groove 131 to the side wall of the backrest body 110 to achieve a tensioning effect, so that the shoulder strap 210 is in close contact with the side wall of the backrest body 110 and the groove wall of the first limiting groove 131, increasing the sliding friction. Thus, when the vehicle collides or brakes suddenly, it can effectively reduce the probability of the shoulder strap 210 slipping relative to the backrest body 110, thereby effectively improving the safety of the child safety seat 100 restrained by the vehicle seat belt.

[0042] like Figure 1 and Figure 5As shown in the above embodiments of this application, the child safety seat 100 further includes a first mounting member 140, and the first anti-slip member 130 is connected to the side wall of the backrest body 110 through the first mounting member 140. This ensures that the first anti-slip member 130 is stably held against the side wall of the backrest body 110, thereby keeping the first limiting groove 131 of the first anti-slip member 130 always within the first groove 113, thus guaranteeing the stability of the shoulder strap anti-slip function.

[0043] For example, the connection between the first anti-slip component 130 and the first mounting component 140 can be injection molding, snap-fit, or screw connection, and the connection between the first mounting component 140 and the side wall backing the body 110 can be screw connection or injection molding.

[0044] In the above embodiments of this application, two first anti-slip members 130 are provided, and the two first anti-slip members 130 are respectively connected to the opposite sides of the backing body 110.

[0045] In this embodiment, by setting the number of first anti-slip parts 130 to two, and connecting the two first anti-slip parts 130 to the opposite sides of the backrest body 110 respectively, the child safety seat 100 can be installed in a forward-facing state and fixed to any vehicle seat with anti-slip shoulder straps, effectively expanding the applicability of the child safety seat 100.

[0046] like Figure 6 and Figure 7 As shown in the above embodiments of this application, the child safety seat 100 further includes a second anti-slip member 160. The second anti-slip member 160 is connected to the side wall of the seat body 150. The side wall of the seat body 150 is provided with a second groove 151. The second anti-slip member 160 is provided with a second limiting slot 161. The second limiting slot 161 is located in the second groove 151 and is used to limit the sliding of the shoulder strap of the vehicle seat belt in the second fixed state of the child safety seat 100.

[0047] In this embodiment, the second anti-slip member 160 is connected to the side wall of the seat body 150. By opening a second groove 151 on the side wall of the seat body 150 and opening a second limiting groove 161 in the second groove 151 on the second anti-slip member 160, the path of the shoulder strap bends from the side wall of the seat body 150 into the second limiting groove 161 in the second groove 151, and then bends back out from the second limiting groove 161 in the second groove 151 to the side wall of the seat body 150, so as to achieve a tensioning effect, making the shoulder strap tightly adhere to the side wall of the seat body 150 and the groove wall of the second limiting groove 161, increasing the sliding friction. Thus, when the vehicle collides or brakes suddenly, the probability of the shoulder strap sliding relative to the seat body 150 can be effectively reduced, thereby effectively improving the safety of the child safety seat 100 restrained by the vehicle seat belt.

[0048] It should be noted that the second fixed state is the state in which the child safety seat 100 is installed rear-facing on the vehicle seat.

[0049] like Figure 6 and Figure 9 As shown, it can be understood that one end of the vehicle seat belt is movably connected to the vehicle, and the other end is fixedly connected to the vehicle seat. The vehicle seat has a slot, and the vehicle seat belt has a movable buckle 230. The movable buckle 230 is slidably fitted onto the vehicle seat belt and can engage with the slot to divide the vehicle seat belt into a shoulder strap 210 and a lap belt 220. The shoulder strap 210 is movably connected to the vehicle, and the lap belt 220 is fixedly connected to the vehicle seat. When the child safety seat 100 is installed rear-facing on the vehicle seat, the shoulder strap 210 passes sequentially through the second limiting slot 161 and the side of the seat body 150 near the backrest body 110, and the lap belt 220 passes through the side of the seat body 150 near the backrest body 110, and is locked by engaging with the slot through the movable buckle to stably bind the child safety seat 100 to the vehicle seat. Specifically, the shoulder strap 210 bends from the side wall of the seat body 150 into the second limiting groove 161 located in the second groove 151, and then bends in the opposite direction from the second limiting groove 161 to the side wall of the seat body 150 to achieve a tensioning effect, so that the shoulder strap 210 is in close contact with the side wall of the seat body 150 and the groove wall of the second limiting groove 161, increasing the sliding friction. This effectively reduces the probability of the shoulder strap 210 slipping relative to the seat body 150 when the vehicle collides or brakes suddenly, thereby effectively improving the safety of the child safety seat 100 restrained by the vehicle seat belt.

[0050] like Figure 7As shown in the above embodiments of this application, the child safety seat 100 further includes a second mounting member 170, and the second anti-slip member 160 is connected to the side wall of the seat body 150 through the second mounting member 170. This ensures that the second anti-slip member 160 is stably held against the side wall of the seat body 150, thereby keeping the second limiting groove 161 of the second anti-slip member 160 always within the second groove 151, thus guaranteeing the stability of the shoulder strap anti-slip function.

[0051] For example, the connection between the second anti-slip member 160 and the second mounting member 170 can be injection molding, snap-fit, or screw connection, and the connection between the second mounting member 170 and the side wall of the seat body 150 can be screw connection or injection molding.

[0052] In the above embodiments of this application, two second anti-slip members 160 are provided, and the two second anti-slip members 160 are respectively connected to the opposite sides of the seat body 150.

[0053] In this embodiment, by setting the number of second anti-slip members 160 to two, and connecting the two second anti-slip members 160 to the opposite sides of the seat body 150 respectively, the child safety seat 100 can be installed in a rear-facing position with the shoulder straps non-slip and fixed on any vehicle seat, effectively expanding the applicability of the child safety seat 100.

[0054] This application also provides a vehicle including the child safety seat 100 described in the above embodiments.

[0055] The vehicle has the child safety seat 100 of any of the above embodiments, and therefore has all the beneficial effects of the child safety seat 100, which will not be described in detail here.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A child safety seat for securing to a vehicle seat, characterized in that, The child safety seat (100) includes: Seat belt (180); A limiting hole (111) is provided at the middle position of the back body (110) along its extension direction. The headrest body (120) is movably disposed on one side of the backrest body (110) along the extension direction of the backrest body (110). The headrest body (120) has a through hole (121). There is a gap (114) between the backrest body (110) and the headrest body (120). The limiting hole (111), the gap (114) and the through hole (121) form a channel. The seat belt (180) passes through the channel.

2. The child safety seat according to claim 1, characterized in that, The backrest body (110) is provided with a guide rail (112) along its extension direction, and the headrest body (120) is slidably connected to the guide rail (112).

3. The child safety seat according to claim 2, characterized in that, The guide rail (112) has a first limit position and a second limit position. When the head rest body (120) is located in the first limit position, the through hole (121) is located at or above the top of the limiting hole (111). When the headrest body (120) is in the second extreme position, the through hole (121) is located at or below the bottom of the limiting hole (111).

4. The child safety seat according to claim 1, characterized in that, When the headrest body (120) moves relative to the backrest body (110) to the point where the through hole (121) is below the bottom edge of the limiting hole (111), the gap (114) between the through hole (121) and the bottom edge of the limiting hole (111) forms an adjustment channel, and the seat belt (180) of the accommodating portion serves as the adjustment section.

5. The child safety seat according to claim 1, characterized in that, The child safety seat (100) also includes a seat body (150), which is connected to the bottom of the backrest body (110). The seat belt (180) includes a fixed section (181) and a movable section (182). The fixed section (181) is fixedly connected to the side of the seat body (150) near the backrest body (110). The seat body (150) has an installation hole (152). One end of the movable section (182) passes through the installation hole (152), and the other end passes through the channel and is snapped into connection with the fixed section (181).

6. The child safety seat according to claim 5, characterized in that, The child safety seat also includes a stop assembly (190) disposed in the mounting hole (152) for pressing or releasing the movable segment (182).

7. The child safety seat according to any one of claims 1 to 6, characterized in that, The child safety seat (100) further includes a first anti-slip component (130), which is connected to the side wall of the backrest body (110). The side wall of the backrest body (110) is provided with a first groove (113), and the first anti-slip component (130) is provided with a first limiting slot (131). The first limiting slot (131) is located in the first groove (113) and is used to limit the sliding of the shoulder strap of the vehicle seat belt in the first fixed state of the child safety seat (100).

8. The child safety seat according to claim 7, characterized in that, The child safety seat (100) also includes a first mounting member (140), and the first anti-slip member (130) is connected to the side wall of the backrest body (110) through the first mounting member (140).

9. The child safety seat according to claim 5, characterized in that, The child safety seat (100) further includes a second anti-slip member (160), which is connected to the side wall of the seat body (150). The side wall of the seat body (150) is provided with a second groove (151), and the second anti-slip member (160) is provided with a second limiting slot (161). The second limiting slot (161) is located in the second groove (151) and is used to limit the sliding of the shoulder strap of the vehicle seat belt in the second fixed state of the child safety seat (100).

10. The child safety seat according to claim 9, characterized in that, The child safety seat (100) also includes a second mounting member (170), the second anti-slip member (160) being connected to the side wall of the seat body (150) via the second mounting member (170).

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