Child safety seat

Abstract

The invention discloses a child safety seat which comprises a seat back mechanism comprising a seat back and a headrest, the headrest comprises a headrest body and a headrest supporting piece, the headrest body comprises a bearing part, a first headrest side wing part and a second headrest side wing part, the headrest supporting piece comprises a supporting part, a first supporting side wing part and a second supporting side wing part, and the supporting part is arranged on the bearing part in an aligned mode; the first supporting side wing part is arranged on the first headrest side wing part in an aligned mode, the second supporting side wing part is arranged on the second headrest side wing part in an aligned mode, at least one of the first headrest side wing part and the second headrest side wing part is provided with an assembly part, and the assembly part can be clamped with the corresponding one of the first supporting side wing part and the second supporting side wing part. The assembly part is provided with a bent structure protruding towards a central space defined by the first headrest side wing part and the second headrest side wing part, and the bent structure can be clamped with the outer edge of the corresponding one of the first supporting side wing part and the second supporting side wing part so that the headrest supporting part can be detachably installed on the headrest body. The headrest has the advantages of being convenient to install and firm and reliable in installation.

Description

[0001] This application is a divisional application of the invention patent application of Mingmen Switzerland Co., Ltd. (the application date is September 17, 2020, the application number is 202010983069.6, and the invention name is "Chair back mechanism and headrest thereof"). Technical Field

[0002] The present invention relates to the field of infant products, and in particular to a child safety seat. Background Art

[0003] A child safety seat is a device that is fastened to a car seat for a child to sit on and secures the child in the child safety seat through a restraining device to ensure the child's safety. As a child safety seat can minimize the damage to a child in the event of an emergency brake or accidental collision, child safety seats were quickly accepted by consumers and gradually promoted around the world.

[0004] In order to improve the comfort and safety of use and better protect the head and neck of children, child safety seats are generally equipped with headrests. The existing headrests include a headrest body and a headrest support. The headrest support is fixed to the headrest body by gluing. Before assembling the headrest, glue needs to be applied to the headrest body. Therefore, the assembly of the headrest requires a lot of materials, a lot of processes, and is time-consuming and laborious.

[0005] Therefore, there is an urgent need for a headrest and a seat back mechanism that are easy to install to overcome the above-mentioned defects. Summary of the invention

[0006] The object of the present invention is to provide a headrest which is easy to install.

[0007] Another object of the present invention is to provide a chair back mechanism with a headrest, which is easy to install.

[0008] To achieve the above-mentioned purpose, the headrest of the present invention includes a headrest body and a headrest support, the headrest support is arranged on the inner side of the headrest body, one of the headrest body and the headrest support is provided with an assembly part, and the other of the headrest body and the headrest support is provided with an assembly part that can be detachably locked with the assembly part, and the headrest support is detachably installed on the headrest body by locking the assembly part with the assembly part.

[0009] In this way, the headrest body and the headrest support of the present invention are fixedly assembled by locking the assembly part with the assembly portion, so the installation of the headrest can be completed after the assembly part is locked with the assembly portion, and the installation of the headrest body and the headrest support is firm and reliable, which greatly simplifies the installation operation and effectively saves assembly time. Moreover, because the locking of the assembly part with the assembly portion is detachable, the assembled headrest can be disassembled to remove the headrest support from the headrest body, which is convenient for maintenance, cleaning and care of the headrest support. Furthermore, since it is no longer necessary to apply glue to the headrest body when installing the headrest, the installation process is effectively simplified and materials are saved.

[0010] Preferably, the assembly member and the assembly portion of the present invention are locked together by snapping.

[0011] Preferably, the headrest support of the present invention is pressed tightly against the headrest body by the engagement of the assembly member and the assembly portion.

[0012] Preferably, the headrest support of the present invention is assembled on the headrest body by clamping of an assembling part.

[0013] Preferably, the assembly portion of the present invention is a concave structure, and the assembly member is a bent structure that can be inserted into the concave structure.

[0014] Preferably, the assembly member of the present invention is arranged on the headrest body, the assembly portion is arranged on the headrest support, and the assembly member is bent toward the inner cavity of the headrest body.

[0015] Preferably, the bending structure of the present invention is an elastic structure.

[0016] Preferably, the bending structure of the present invention is clamped and engaged with the recessed structure in an interference fit manner.

[0017] Preferably, the present invention has a pair of bending structures and a pair of recessed structures, the two bending structures are arranged oppositely on the headrest body, and the two recessed structures are arranged oppositely on the headrest support.

[0018] Preferably, the distance between the two bending structures of the present invention is smaller than the distance between the two concave structures.

[0019] Preferably, a notch is formed on the assembly portion of the headrest support member of the present invention, and the assembly member is inserted into the assembly portion through the notch to be engaged with the assembly portion.

[0020] Preferably, the headrest support of the present invention is an integrated structure composed of EPS.

[0021] Preferably, the back of the headrest support of the present invention is provided with a fitting portion, and the headrest body is provided with a locking portion engaged with the fitting portion, and the locking portion is locked into the fitting portion when the headrest support is installed on the headrest body.

[0022] Preferably, the locking portion of the present invention is a rib structure, and the fitting portion is a slot structure.

[0023] Preferably, the headrest body of the present invention includes a supporting portion and a first headrest side wing portion and a second headrest side wing portion respectively located on both sides of the supporting portion, the headrest support component includes a supporting portion and a first support side wing portion and a second support side wing portion respectively located on both sides of the supporting portion, the supporting portion is arranged in an opposite direction to the supporting portion, the first support side wing portion is arranged in an opposite direction to the first headrest side wing portion, and the second support side wing portion is arranged in an opposite direction to the second headrest side wing portion.

[0024] Preferably, the first supporting side wing portion and / or the second supporting side wing portion of the present invention each have an inner side surface structure facing the inner cavity of the headrest support component, an outer side surface structure facing the outside of the headrest support component, and an arc transition surface structure located at the intersection of the inner side surface structure and the outer side surface structure, and the assembly portion is arranged on the arc transition surface structure.

[0025] Preferably, the first headrest side wing portion and the second headrest side wing portion of the present invention are shell structures.

[0026] Preferably, the assembly part of the present invention is arranged at the edge of the first headrest side wing part and / or the second headrest side wing part.

[0027] Preferably, the fitting portion of the present invention is arranged on the back of the first supporting wing portion and / or the second supporting wing portion, and the locking portion is arranged on the first headrest wing portion and / or the second headrest wing portion.

[0028] Preferably, a matching locking portion is disposed in the assembly portion of the present invention, and a locking portion engaged with the matching locking portion is disposed on the assembly member, and the assembly member is inserted into the assembly portion so that the locking portion is engaged with the matching locking portion.

[0029] Preferably, the locking portion of the present invention is a slot structure, and the locking portion is a protruding structure that slides into the slot structure for card insertion.

[0030] Preferably, the protruding structure of the present invention is a rib structure provided at the turning point of the bending structure, and the protruding structure is arranged to face the inner cavity of the headrest body.

[0031] Preferably, a safety guide is installed between the lower end of the first headrest side wing portion and / or the second headrest side wing portion of the present invention and the supporting portion.

[0032] Preferably, a penetration gap is formed between the lower ends of the first supporting wing portion and / or the second supporting wing portion of the present invention and the supporting portion, and the safety guide is arranged opposite to the penetration gap.

[0033] Preferably, the headrest body of the present invention further comprises a sliding arm which is arranged on the back of the headrest body and extends downward.

[0034] The chair back mechanism of the present invention comprises a chair back and the headrest arranged on the chair back.

[0035] Preferably, the headrest of the present invention is slidably mounted on the chair back in an adjustable height.

[0036] It is understandable that, since the chair back mechanism of the present invention comprises a chair back and a headrest disposed on the chair back, the headrest on the chair back mechanism of the present invention also has the advantage of being easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a three-dimensional structural schematic diagram of the chair back mechanism of the present invention.

[0038] Figure 2 It is a three-dimensional structural schematic diagram of the headrest of the present invention.

[0039] Figure 3 It is a three-dimensional structural schematic diagram of the headrest supporting member in the headrest of the present invention.

[0040] Figure 4 yes Figure 3 A schematic diagram of the three-dimensional structure of the middle headrest support from another angle.

[0041] Figure 5 Schematic diagram of the three-dimensional structure of the headrest body in the headrest of the present invention

[0042] Figure 6 yes Figure 5 A schematic diagram of the three-dimensional structure of the middle headrest body from another angle.

[0043] Figure 7 yes Figure 6 A partial enlarged schematic diagram of the structure at point A in the middle. DETAILED DESCRIPTION

[0044] In order to explain the technical content and structural features of the present invention in detail, further description is given below in combination with the implementation modes and the accompanying drawings.

[0045] like Figure 1 As shown, the chair back mechanism 100 of the present invention includes a chair back 10 and a headrest 20 disposed on the chair back 10. Specifically, the headrest 20 is slidably disposed on the chair back 10 in an adjustable height, so that the headrest 20 can be adjusted to adapt to children of different heights, so that the child's head can be supported and protected by the headrest 20. Preferably, the chair back mechanism 100 of the present invention is suitable for being installed on a base (not shown in the figure), so that the chair back mechanism 100 and the base are assembled into a child safety seat to provide a comfortable and safe riding environment for the child. It should be noted that the structure of the above-mentioned chair back 10 and the base can adopt the existing well-known structure, so it will not be repeated here. The following is in conjunction with the attached Figures 1 to 7 The headrest 20 described above will be further described.

[0046] like Figures 1 to 3As shown, the headrest 20 of the present invention comprises a headrest body 21 and a headrest support 22, and the headrest support 22 is arranged on the inner side of the headrest body 21. The headrest body 21 is provided with an assembly part 211, and the headrest support 22 is provided with an assembly part 221 that can be detachably locked with the assembly part 211. The headrest support 22 is detachably mounted on the headrest body 21 by locking the assembly part 211 with the assembly part 221. In this way, the headrest body 21 and the headrest support 22 of the present invention are fixedly assembled by locking the assembly part 211 with the assembly part 221, so the installation of the headrest 20 can be completed after the assembly part 211 is locked with the assembly part 221, and the installation of the headrest body 21 and the headrest support 22 is firm and reliable, which greatly simplifies the installation operation and effectively saves assembly time. Moreover, since the locking of the assembly part 211 and the assembly part 221 is separable, the assembled headrest 20 can be disassembled to remove the headrest support 22 from the headrest body 21, which is convenient for the maintenance, cleaning and care of the headrest support 22. Furthermore, since it is no longer necessary to apply glue to the headrest body 21 when the headrest 20 is installed, the installation process is effectively simplified and materials are saved. According to actual needs, in other embodiments, the assembly part 211 is arranged on the headrest support 22, and correspondingly, the assembly part 221 is arranged on the headrest body 21, which can also achieve the separable locking of the headrest body 21 and the headrest support 22, so it is not limited to this. The headrest support 22 is arranged in a U shape, and the headrest support 22 encloses a space for supporting the child's head (not marked in the figure) so as to better support and protect the child's head, but it is not limited to this. For example, the headrest support 22 is an integrated structure composed of EPS, but not limited thereto, so that the structure of the headrest support 22 is more solid and reliable, and has better shock absorption effect and economy. In this embodiment, the headrest body 21 uses a hard plastic body, but not limited thereto, to provide good support and reduce manufacturing costs. Specifically, the assembly part 211 and the assembly part 221 are locked by clamping, so as to facilitate the rapid docking, locking and release of the assembly part 211 and the assembly part 221. Preferably, the headrest support 22 is pressed against the headrest body 21 by the clamping of the assembly part 211 and the assembly part 221, so that the headrest support 22 and the headrest body 21 form a headrest 20 with a tighter structure. More specifically, the headrest support 22 is assembled on the headrest body 21 by the clamping of the assembly part 211, so that the connection between the headrest support 22 and the headrest body 21 is more reliable and stable.

[0047] like Figures 2 to 6As shown, the assembly part 221 is a concave structure, and the assembly part 211 is a bent structure that can be inserted into the concave structure. The structure of the assembly part 211 and the assembly part 221 is simple and easy to arrange. In addition, the bending structure can better clamp the headrest support 22. For example, the headrest body 21 is also arranged in a U shape, and the headrest body 21 surrounds an open cavity structure (not marked in the figure) for the installation of the headrest support 22, but it is not limited to this, so that the headrest body 21 can be better installed and docked with the headrest support 22. Specifically, the assembly part 211 is bent toward the inner cavity of the headrest body 21, so as to avoid the assembly part 211 from spreading outward, making the structure of the headrest body 21 more compact. More specifically, the bending structure is clamped and engaged with the concave structure in an interference fit, and the locking of the assembly part 211 and the assembly part 221 is more firm and stable, and not easy to loosen.

[0048] like Figures 1 to 6 As shown, the bending structure is an elastic structure. Therefore, the bending structure can be deformed to a certain extent. When the headrest support 22 is installed on the headrest body 21, the headrest support 22 can push the bending structure to deform, which is convenient for the installation and removal of the headrest 20. In order to make the installation of the headrest support 22 and the headrest body 21 more firm and reliable, a pair of bending structures and a pair of recessed structures are respectively provided. The two bending structures are arranged oppositely on the headrest body 21, and the two recessed structures are arranged oppositely on the headrest support 22. Specifically, as Figure 1 As shown, the spacing a between the two bending structures is smaller than the spacing b between the two recessed structures, so that during the installation process of the headrest 20, the two bending structures need to be spread apart. After the headrest support 22 and the headrest body 21 are installed in place, the bending structure is correspondingly inserted into the recessed structure, so that the bending structure can clamp the headrest support 22 and press the headrest support 22 onto the headrest body 21, so that the headrest support 22 and the headrest body 21 are tightly installed together. More specifically, the assembly part 221 on the headrest support 22 is provided with a notch 222, and the assembly part 211 is inserted into the assembly part 221 through the notch 222 and is engaged with the assembly part 221. The assembly part 211 can be conveniently inserted into the assembly part 221 by using the notch 222. It should be noted that the spacing a between the two bending structures refers to the distance between the ends of the two bending structures, and the spacing b between the two recessed structures refers to the distance between the two notches 222.

[0049] like Figures 2 to 6As shown, the headrest body 21 includes a supporting portion 212 and a first headrest side wing portion 213 and a second headrest side wing portion 214 respectively located on both sides of the supporting portion 212. The headrest support 22 includes a supporting portion 223 and a first support side wing portion 224 and a second support side wing portion 225 respectively located on both sides of the supporting portion 223. The supporting portion 223 is arranged on the supporting portion 212, the first support side wing portion 224 is arranged on the first headrest side wing portion 213, and the second support side wing portion 225 is arranged on the second headrest side wing portion 214, so that the combined structure of the headrest 20 is more solid and compact, and the layout is simpler and more reasonable. Preferably, in this embodiment, the headrest body 21 is a split structure, but not limited to this. The first headrest side wing portion 213 is installed on the left side of the supporting portion 212, and the second headrest side wing portion 214 is installed on the right side of the supporting portion 212, so as to facilitate production and layout. For example, the first headrest side wing portion 213 and the second headrest side wing portion 214 are shell structures, which are small in size and light in weight, and are conducive to reducing the weight of the headrest 20. The assembly part 211 is arranged at the edge of the first headrest side wing portion 213 and the second headrest side wing portion 214, so as to mold the assembly part 211 on the first headrest side wing portion 213 and the second headrest side wing portion 214. Preferably, the assembly part 211 is molded with the first headrest side wing portion 213 and the second headrest side wing portion 214 to form an integral structure, so as to enhance the stability of the structure and facilitate production and manufacturing. The first support side wing portion 224 is formed by extending the support portion 223 to the left, and the second support side wing portion 225 is formed by extending the support portion 223 to the right, so as to make the structure of the headrest support 22 of the integral structure more solid and stable. Specifically, the first supporting wing portion 224 and the second supporting wing portion 225 each have an inner side surface structure 226 facing the inner cavity of the headrest support 22, an outer side surface structure 227 facing the outer side of the headrest support 22, and an arc transition curved surface structure 228 located at the intersection of the inner side surface structure 226 and the outer side surface structure 227, and the assembly portion 221 is arranged on the arc transition curved surface structure 228. It can be seen that the thickness of the headrest support 22 is large, and it can play a good buffering role when a collision occurs. In addition, the assembly portion 221 is arranged on the arc transition curved surface structure 228, so that the engagement of the assembly part 211 with the assembly portion 221 is more direct and fast.

[0050] like Figures 2 to 7As shown, a matching lock portion 229 is provided in the assembly portion 221, and a locking portion 215 that engages with the matching lock portion 229 is provided on the assembly part 211. The assembly part 211 is inserted into the assembly part 221 so that the locking portion 215 engages with the matching lock portion 229. When the assembly part 211 is inserted into the assembly part 221, the locking portion 215 is also inserted into the matching lock portion 229, achieving double locking, so that the headrest support 22 and the headrest body 21 are more reliably installed together. For example, the matching lock portion 229 is a slot structure, and the locking portion 215 is a protruding structure that slides into the slot structure for insertion. Therefore, the structure of the matching lock portion 229 and the locking portion 215 is simple and easy to arrange. Of course, according to actual needs, the matching lock portion 229 can be selected to be arranged on the assembly part 211, and the corresponding locking portion 215 is arranged in the assembly part 221, which can also achieve double locking, so it is not limited to this. Preferably, the protrusion structure is a rib structure provided at the turning point of the bending structure, and the protrusion structure is arranged opposite to the inner cavity of the headrest body 21. Therefore, in addition to being able to engage with the slot structure, the protrusion structure can also enhance the structural strength and rigidity of the bending structure, making the bending structure less likely to be broken, pressed or deformed.

[0051] like Figures 3 to 6 As shown, in order to make the headrest body 21 and the headrest support 22 more firmly and reliably installed together, the back of the headrest support 22 is provided with a fitting portion 220, and the headrest body 21 is provided with a locking portion 216 engaged with the fitting portion 220, and the locking portion 216 is inserted into the fitting portion 220 when the headrest support 22 is installed on the headrest body 21. For example, in the embodiment, the locking portion 216 is a rib plate structure, and the fitting portion 220 is a slot structure, but it is not limited to this. Of course, according to actual needs, the locking portion 216 can be provided on the headrest support 22, and correspondingly, the fitting portion 220 is provided on the headrest body 21, which can also achieve the purpose of strengthening the connection between the headrest body 21 and the headrest support 22, so it is not limited to this. Preferably, the locking portion 216 is extended toward the assembly part 211, and the height of the locking portion 216 is gradually reduced toward the assembly part 211, but it is not limited to this. The fitting portion 220 is a slot structure arranged in a long straight shape, but is not limited thereto. Specifically, the fitting portion 220 is arranged on the back of the first supporting wing portion 224 and the second supporting wing portion 225, and the locking portion 216 is arranged on the first headrest wing portion 213 and the second headrest wing portion 214. Such an arrangement enables the first supporting wing portion 224 to be more reliably and firmly connected to the first headrest wing portion 213, and also enables the second supporting wing portion 225 to be more reliably and firmly connected to the second headrest wing portion 214. Of course, according to actual needs, the fitting portion 220 can also be only arranged on the first supporting wing portion 224 or the second supporting wing portion 225, and correspondingly, the locking portion 216 can be only arranged on the first headrest wing portion 213 or the second headrest wing portion 214, which can also achieve the purpose of strengthening the connection between the headrest body 21 and the headrest support 22, so it is not limited thereto.

[0052] like Figures 1 to 6 As shown, a safety guide 23 is installed between the lower ends of the first headrest wing 213 and the second headrest wing 214 and the supporting portion 212. The seat back mechanism 100 of the present invention is assembled with the base to form a child safety seat. When the child safety seat is placed on a car seat for use, the seat belt and other protective structures on the car can be wrapped around the child sitting in the child safety seat to protect the child from accidental injuries. After the headrest 20 is adjusted in height, the seat belt passes through the safety guide 23 and then wraps around the child. Due to the guidance and restriction of the safety guide 23, the seat belt will not strangle the child. Preferably, the safety guide 23 is an annular structure, but not limited to this, so that the seat belt and other protective structures can pass through the safety guide 23. Specifically, the lower ends of the first support wing 224 and the second support wing 225 each surround a penetration notch 24 with the support portion 223, and the safety guide 23 is arranged directly opposite to the penetration notch 24. The safety belt passing through the safety guide 23 can be directly passed out through the penetration notch 24, which is convenient for winding the safety belt. In order to facilitate the installation of the headrest 20 and the sliding on the chair back 10, the headrest body 21 also includes a sliding arm 217 arranged on the back of the headrest body 21 and extending downward. For example, there are two sliding arms 217 arranged one on the left and one on the right, and the sliding arm 217 is a tubular structure, so that the sliding of the headrest 20 on the chair back 10 is smoother and helps to reduce the weight of the headrest 20. Preferably, the sliding arm 217 is arranged on the first headrest side wing 213 and the second headrest side wing 214, and each forms an integral structure with the first headrest side wing 213 and the second headrest side wing 214 to enhance structural stability and facilitate production and manufacturing.

[0053] Combined with Figures 1 to 7 , the working principle of the chair back mechanism 100 of the present invention is explained: when the headrest 20 is installed, the headrest support 22 is placed in the open cavity structure surrounded by the headrest body 21, the assembly parts 211 are correspondingly inserted into the assembly part 221, the locking part 215 is correspondingly inserted into the matching lock part 229, and the matching lock part 216 is inserted into the matching part 220. The headrest support 22 and the headrest body 21 are tightly installed together to complete the installation of the headrest 30. After that, the slide arm 217 is installed on the chair back 10, and the headrest 20 can be installed on the chair back 10. The headrest 20 and the chair back 10 are assembled into the chair back mechanism 100. The chair back mechanism 100 and the base are assembled into a child safety seat. When the child safety seat is placed on the car seat for use, the headrest 20 is adjusted in height to adapt to the head of the child sitting in the child safety seat. Then the safety belt is passed through the safety guide 23 and then wrapped around the child so that the safety belt will not strangle the child.

[0054] Compared with the prior art, the headrest 20 of the present invention comprises a headrest body 21 and a headrest support 22. The headrest support 22 is arranged on the inner side of the headrest body 21. One of the headrest body 21 and the headrest support 22 is provided with an assembly part 211, and the other of the headrest body 21 and the headrest support 22 is provided with an assembly part 221 which can be detachably locked with the assembly part 211. The headrest support 22 is detachably mounted on the headrest body 21 by locking the assembly part 211 with the assembly part 221. In this way, the headrest body 21 and the headrest support 22 of the present invention are fixedly assembled by locking the assembly part 211 with the assembly part 221. Therefore, after the assembly part 211 is locked with the assembly part 221, the installation of the headrest 20 can be completed. The installation of the headrest body 21 and the headrest support 22 is firm and reliable, which greatly simplifies the installation operation and effectively saves assembly time. Furthermore, since the locking of the assembly part 211 and the assembly part 221 is detachable, the assembled headrest 20 can be disassembled to remove the headrest support 22 from the headrest body 21, which is convenient for the maintenance, cleaning and care of the headrest support 22. Furthermore, since it is no longer necessary to apply glue to the headrest body 21 when installing the headrest 20, the installation process is effectively simplified and materials are saved.

[0055] It is understandable that the chair back mechanism 100 having the headrest 20 of the present invention also has the same technical effect.

[0056] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are all within the scope of the present invention.

Claims

1. A child safety seat, comprising: A chair back mechanism, the chair back mechanism comprising a chair back and a headrest arranged on the chair back, the headrest comprising a headrest body and a headrest support, Wherein, the headrest body includes a supporting portion and a first headrest side wing portion and a second headrest side wing portion respectively located on both sides of the supporting portion; the headrest support component includes a supporting portion and a first supporting side wing portion and a second supporting side wing portion respectively located on both sides of the supporting portion; the supporting portion is arranged on the supporting portion, the first supporting side wing portion is arranged on the first headrest side wing portion, and the second supporting side wing portion is arranged on the second headrest side wing portion. At least one of the first headrest side wing portion and the second headrest side wing portion has an assembly part, and the assembly part can be engaged with the corresponding one of the first supporting side wing portion and the second supporting side wing portion to lock the headrest support with the headrest body. The assembly part has a bending structure protruding toward the central space surrounded by the first headrest side wing portion and the second headrest side wing portion, and the bending structure can be engaged with the outer edge of the corresponding one of the first supporting side wing portion and the second supporting side wing portion, so that the headrest support can be detachably mounted on the headrest body.

2. The child safety seat according to claim 1, characterized in that: in, The headrest support is an integrated structure composed of EPS for supporting and protecting the child's head, and the headrest body is a hard plastic body.

3. The child safety seat according to claim 1, characterized in that: The headrest support is provided with an assembly portion, the assembly portion is a concave structure, the bending structure can be inserted into the concave structure, and the bending structure is a deformable elastic structure.

4. The child safety seat according to claim 3, characterized in that: The assembly part is bent toward the inner cavity of the headrest body, so as to press the headrest support part toward the headrest body.

5. The child safety seat according to claim 3, characterized in that: The bending structures are provided with a pair, and the recessed structures are provided with a pair. The two bending structures are arranged oppositely on the headrest body, and the two recessed structures are arranged oppositely on the headrest support. The distance between the two bending structures is smaller than the distance between the two recessed structures, so that the bending structure is clamped and engaged with the recessed structure in an interference fit.

6. The child safety seat according to any one of claims 1 to 5, characterized in that: The back of the headrest support is provided with a fitting part, and the headrest body is provided with a locking part engaged with the fitting part. The locking part is locked in the fitting part when the headrest support is installed on the headrest body.

7. The child safety seat according to claim 6, characterized in that: The locking portion is a rib structure, the fitting portion is a slot structure, the fitting portion is arranged on the back of the first supporting side wing portion and / or the second supporting side wing portion, and the locking portion is arranged on the first headrest side wing portion and / or the second headrest side wing portion.

8. The child safety seat according to claim 1, characterized in that: The first supporting side wing portion and / or the second supporting side wing portion each have an inner side surface structure facing the inner cavity of the headrest support component, an outer side surface structure facing the outside of the headrest support component, and an arc transition surface structure located at the intersection of the inner side surface structure and the outer side surface structure, and the assembly portion is arranged on the arc transition surface structure.

9. The child safety seat according to claim 4, characterized in that: A matching locking portion is arranged in the assembly portion, a locking portion engaged with the matching locking portion is arranged on the assembly part, and the assembly part is inserted into the assembly part so that the locking portion is engaged with the matching locking portion.

10. The child safety seat according to claim 9, characterized in that: The matching locking part is a slot structure, the locking part is a protruding structure that slides into the slot structure for insertion, the protruding structure is a rib structure arranged at the turning point of the bending structure, and the protruding structure is arranged facing the inner cavity of the headrest body.

11. The child safety seat according to any one of claims 1 to 5, characterized in that: The headrest is slidably arranged on the chair back in an adjustable height.

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