Child seat

Abstract

The application discloses a child seat, which comprises a seat body and an energy-absorbing part. The seat body comprises a backrest and a base connected with each other, and the backrest has a first side edge and a second side edge arranged transversely opposite to each other. The energy-absorbing part is connected to the first side edge or the second side edge, and comprises a first base connected to the backrest and a first boss connected to the first base and away from the backrest. The first base defines a first cavity with an opening facing the backrest, and the first boss defines a second cavity with an opening facing the backrest. The first cavity and the second cavity are communicated. The opening of the first cavity is larger than that of the second cavity. The child seat disclosed by the application can improve the buffering performance of the child seat, thereby improving the safety performance of the child seat.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of child safety seats, in particular to a child seat. BACKGROUND

[0002] In modern society, people choose to travel by car more frequently to meet the diverse needs of modern life. Especially for families, when going out, private cars are the preferred mode of transportation. For families with children, especially children aged 0 to 14, when traveling by private car, the safety of children needs to be protected. Because the size of adult seat safety facilities such as adult seat belts and airbags is not suitable for children, in the event of a car accident, adult seat safety facilities not only cannot guarantee the safety of children, but also can cause greater harm to the safety of children. Children's seats are suitable in size for children and provide cushioning performance, so that children's seats can protect the safety of children. Therefore, when traveling by private car, children's seats are often used to protect the safety of children.

[0003] For car accidents, the side impact force is more harmful to passengers than the front or rear impact force. Because there are usually engine boxes and other equipment in the front of the car, which can effectively reduce the effect of the front impact force to provide cushioning. And there are usually trunks and other equipment in the back of the car, which can effectively reduce the effect of the rear impact force to provide cushioning. The side only has doors and other facilities to cushion the side impact force, so the side impact force has a greater effect. Therefore, when the impact force is the same, the side impact force causes more harm to passengers than other impact forces. Therefore, reducing the effect of the side impact force can effectively reduce the harm to passengers and protect the safety of passengers, thereby improving the safety of passengers.

[0004] For children, because children are in development, the spine and other parts are prone to injury, especially when subjected to impact forces, there is a greater security risk. Therefore, children's seats protect children when traveling by car, provide cushioning, and reduce the effect of impact forces on children to make them safer. Because reducing the effect of the side impact force can effectively reduce the harm to passengers, children's seats usually provide cushioning facilities on the side to reduce the effect of the side impact force on children. But when the impact force is too large, the cushioning facility is difficult to reduce all the impact forces received, the cushioning performance of the children's seat is insufficient, and the safety performance of the children's seat is too low, so that the child passenger is injured under the action of the side impact force, endangering the safety of the child passenger. SUMMARY

[0005] The main purpose of the present application is to provide a child seat which can improve the buffering performance of the child seat and improve the safety performance of the child seat.

[0006] To achieve the above-mentioned purpose, the first aspect of the present application provides a child seat comprising:

[0007] a seat body comprising a backrest and a base connected to each other, the backrest having a first side edge and a second side edge arranged transversely opposite to each other;

[0008] an energy-absorbing part connected to the first side edge or the second side edge, the energy-absorbing part comprising a first base connected to the backrest and a first boss connected to a side of the first base away from the backrest, the first base defining a first cavity with an opening facing the backrest, the first boss defining a second cavity with an opening facing the backrest, the first cavity and the second cavity being in communication;

[0009] wherein the opening of the first cavity is larger than the opening of the second cavity.

[0010] In the above-mentioned embodiments, the energy-absorbing part can deform by collapsing to absorb part of the impact force, thereby reducing the impact force on the child and reducing the injury degree of the child. When the energy-absorbing part is impacted, the first boss is first impacted to deform by collapsing to form primary energy absorption, and when the impact force is transmitted to the first base, the base deforms by collapsing to form secondary energy absorption. Compared with the buffering of primary energy absorption, the energy-absorbing part in the present application can form buffering of twice energy absorption, thereby further reducing the impact force on the child and improving the safety performance. Furthermore, in the present application, the first base defines the first cavity, and the first boss defines the second cavity. Compared with the structure in which the first base and the first boss are solid and absorb energy by compression, the present application absorbs energy by collapsing, which can provide a larger deformation space and better energy absorption effect, and can also save materials to reduce material cost. Furthermore, the first cavity and the second cavity are in communication, compared with the structure in which the first cavity and the second cavity are isolated, the second cavity will not generate gas compression during the collapsing of the first boss, thereby being more conducive to the collapsing of the first boss. Furthermore, in the present application, the opening of the first cavity is larger than the opening of the second cavity, so that the first boss can deform the first base inwardly when the first boss collapses, and thus the overall collapsing of the energy-absorbing part will not excessively press the adjacent components, thereby reducing the damage of the energy-absorbing part to other adjacent components due to the collapsing.

[0011] In some embodiments, the first boss has a first wall surface away from the backrest, a projection plane is parallel to the first wall surface, the first boss forms a first orthographic projection on the projection plane, and the energy-absorbing part forms a second orthographic projection on the projection plane.

[0012] The area of the first orthographic projection is S1 and the area of the second orthographic projection is S2, and they satisfy: 0.5≤S1 / S2≤0.9.

[0013] In the above embodiment, the first boss has a first wall surface facing away from the backrest, and the projection plane is parallel to the first wall surface. On the projection plane, the area of the first boss and the area of the second boss are in a certain proportion, so that the area ratio of the first boss and the second boss is appropriate, and the collapse effect of the first boss and the second boss is obvious, thereby reducing the impact force on the child and improving the safety performance.

[0014] In some embodiments, the first boss has a first wall surface facing away from the backrest, and the height dimension L of the first boss in the direction perpendicular to the first wall surface satisfies: 2mm≤L≤5mm.

[0015] In the above embodiment, the height dimension of the first boss is moderate, which is suitable for daily use and placement, thereby improving the adaptability of the child seat. The distance between the first boss and the backrest is moderate, thereby improving the buffering performance and the effect of the collapse, thereby reducing the impact force on the child and improving the safety performance of the child seat.

[0016] In some embodiments, the backrest includes a back portion, a first side wing portion, and a second side wing portion, the first side wing portion and the second side wing portion are respectively connected to the two laterally opposite sides of the back portion, the first side wing portion includes the first side edge, and the second side wing portion includes the second side edge.

[0017] In the above embodiment, the area of the first side wall is greater than the area of the side directly provided on the first side edge of the backrest, and the area of the second side wall is greater than the area of the side of the second side edge. The area of the first side wing portion is increased, thereby improving the buffering performance and the effect of the collapse, thereby reducing the impact force on the child and improving the safety performance of the child seat.

[0018] In some embodiments, the energy absorption portion includes oppositely arranged third and fourth side edges, the third side edge has a second wall surface facing away from the fourth side edge, the second wall surface is provided with a first fixing column, the fourth side edge has a third wall surface facing the third side edge, the third wall surface is provided with a second fixing column, the first fixing column and the second fixing column extend in the same direction, the first side wing portion is provided with a first fixing hole and a second fixing hole, the first fixing column is arranged in the first fixing hole and is threadedly connected with the first side wing portion, and the second fixing column is arranged in the second fixing hole and is threadedly connected with the first side wing portion.

[0019] The second wall surface is further provided with a third fixing column, the first side wing portion is further provided with a third fixing hole, and the third fixing column is arranged in the third fixing hole and is threadedly connected with the first side wing portion.

[0020] The third fixed column is arranged between the first fixed column and the second fixed column in a direction from the third side edge to the fourth side edge;

[0021] The first fixed column, the second fixed column, and the third fixed column are connected to the first base.

[0022] In the above embodiment, the energy-absorbing part is threadedly connected with the first wing part, the reliability of the connection between the energy-absorbing part and the first wing part is improved, the collapse effect of the energy-absorbing part is improved, the buffer performance of the child seat is improved, and the safety performance of the child seat is improved. Further, the number of connections between the energy-absorbing part and the first wing part is increased, the reliability of the connection between the energy-absorbing part and the first wing part is improved. By three-point positioning, the positioning accuracy of the energy-absorbing part and the first wing part is improved, and the reliability of the connection between the energy-absorbing part and the first wing part is further improved, the collapse effect of the energy-absorbing part is improved, the buffer performance of the child seat is improved, and the safety performance of the child seat is improved. Further, the first fixed column, the second fixed column, and the third fixed column are connected to the first base, the distance between the first fixed column and the second fixed column is increased, the positioning accuracy of the energy-absorbing part and the first wing part is further improved, the collapse effect of the energy-absorbing part is improved, and the impact force on the child is reduced, so that the safety performance of the child seat is improved.

[0023] In some embodiments, the energy-absorbing part further comprises a connecting piece provided with a first connecting hole, the hole axis of the first connecting hole is parallel to the thickness direction of the connecting piece and parallel to the axis of the first fixed column;

[0024] The first wing part is provided with a first through hole penetrating the first wing part in a direction from the first wing part to the second wing part, the first wing part has a first side wall away from the second wing part, the side of the first wing part away from the first side wall is provided with a fourth fixed column, the fourth fixed column is provided with a second connecting hole, the connecting piece is arranged in the first through hole, and the connecting piece and the fourth fixed column are threadedly connected through the first connecting hole and the second connecting hole;

[0025] The connecting piece is connected to the third wall surface and extends out of the first cavity;

[0026] The energy-absorbing part is integrally injection molded, and the draft angle a of the connecting piece satisfies: 4°≤a≤7°.

[0027] In the above embodiments, the energy-absorbing portion further comprises a connecting piece, the connecting piece is arranged in the first through hole, and the connecting piece is threadedly connected with the fourth fixed column through the first connecting hole and the second connecting hole. The connecting piece further provides support for the energy-absorbing portion, the effect of the collapse of the energy-absorbing portion is further improved, the impact force on the child can be reduced, and the safety performance of the child seat is improved. Further, the connecting piece is connected to the third wall surface and extends out of the first cavity. The connecting piece further provides support for the energy-absorbing portion, the effect of the collapse of the energy-absorbing portion is further improved, the impact force on the child can be reduced, and the safety performance of the child seat is improved. Furthermore, the energy-absorbing portion is integrally injection molded. Thus, the deformation during production is improved, the defective products are reduced, and the production efficiency is improved. The draft angle a of the connecting piece satisfies: 4°≤a≤7°. The moderate draft angle a improves the reliability and stability of the fixation of the energy-absorbing portion, the effect of the collapse of the energy-absorbing portion is further improved, the impact force on the child can be reduced, and the safety performance of the child seat is improved.

[0028] In some embodiments, the second wall surface is provided with a first protruding portion, the first protruding portion has a first connecting surface arranged perpendicularly to the axis of the first fixed column, and the first protruding portion is connected to the first connecting surface.

[0029] The second wall surface is further provided with a second protruding portion, the second protruding portion has a second connecting surface arranged perpendicularly to the axis of the second fixed column, and the second protruding portion is connected to the second connecting surface.

[0030] In the above embodiments, the second wall surface is provided with a first protruding portion and a second protruding portion, the first protruding portion has a first connecting surface arranged perpendicularly to the axis of the first fixed column, the first protruding portion is connected to the first connecting surface, the second protruding portion has a second connecting surface arranged perpendicularly to the axis of the second fixed column, and the second protruding portion is connected to the second connecting surface. The first fixed column and the second fixed column provide support for the energy-absorbing portion, improve the positioning accuracy of the energy-absorbing portion, improve the effect of the collapse of the energy-absorbing portion, and thus can reduce the impact force on the child, thereby improving the safety performance of the child seat.

[0031] In some embodiments, the second wall surface is further provided with a third protruding portion, one end of the third protruding portion is connected to the first protruding portion, and the other end of the third protruding portion is connected to the second protruding portion. The first protruding portion, the second protruding portion, and the third protruding portion face one side of the first cavity and jointly define a third cavity in communication with the first cavity. The first side wing portion comprises a first side wing plate and a first flange. One side of the first side wing plate is connected to the back portion, and the other side of the first side wing plate is connected to the first flange. The first flange is located on the side of the first side wing plate away from the back portion. The first flange and the first side wing plate jointly define a first gap. The energy-absorbing portion is at least partially arranged in the first gap.

[0032] In the above embodiment, the second wall surface is provided with a third protruding part, one end of the third protruding part is connected to the first protruding part, and the other end is connected to the second protruding part, so as to define a third cavity. The first side wing part includes a first side wing plate and a first flange. When the energy-absorbing part is subjected to an impact force, the support provided by the first protruding part, the second protruding part and the third protruding part is stable, the connection of the first fixed column and the second fixed column is reinforced, the connection stability of the energy-absorbing part is improved, the effect of the collapse of the energy-absorbing part is improved, and the impact force received by the child is reduced, so that the safety performance of the child seat is improved. Further, the first side wing part includes a first side wing plate and a first flange, the first flange and the first side wing plate jointly define a first gap, and the energy-absorbing part is at least partially arranged in the first gap. When the energy-absorbing part is subjected to an impact force, the first side wing plate and the first flange limit the energy-absorbing part, the stability of the connection between the energy-absorbing part and the first side wing part is improved, the effect of the collapse of the energy-absorbing part is improved, the impact force received by the child is reduced, and the safety performance of the child seat is improved.

[0033] In some embodiments, the first protruding part, the second protruding part and the third protruding part are all arranged in the first gap, and one side of each of the first protruding part, the second protruding part and the third protruding part abuts against the first flange;

[0034] The first boss is located outside the first gap, and protrudes from the first flange in a direction from the second side wing part to the first side wing part.

[0035] In the above embodiment, the first protruding part, the second protruding part and the third protruding part are all arranged in the first gap and abut against one side of the first flange, and the first boss is located outside the first gap and protrudes from the first flange. When the first boss collapses, the influence on the first boss is reduced, the effect of the collapse of the energy-absorbing part is improved, the impact force received by the child is reduced, and the safety performance of the child seat is improved.

[0036] In some embodiments, the energy-absorbing part includes a first energy-absorbing part and a second energy-absorbing part, the first energy-absorbing part is connected to the first side wing part, the second energy-absorbing part is connected to the second side wing part, the second energy-absorbing part includes a second base connected to the second side wing part and a second boss connected to one side of the second base away from the second side wing part, the second base defines a fourth cavity with an opening facing the second side wing part, the second boss defines a fifth cavity with an opening facing the second side wing part, and the fourth cavity and the fifth cavity are in communication;

[0037] The opening of the fourth cavity is larger than the opening of the fifth cavity.

[0038] In the above embodiment, the energy-absorbing part includes a first energy-absorbing part and a second energy-absorbing part, the first energy-absorbing part is connected to the first side wing part, and the second energy-absorbing part is connected to the second side wing part. By acting on the safety seat through the plurality of energy-absorbing parts, the cushioning performance of the child seat is improved, the impact force on the child is reduced, and the safety performance of the child seat is improved.

[0039] Compared with the prior art, the application has the following beneficial effects:

[0040] In the technical solution of the application, the child seat includes a seat body and an energy-absorbing part. The seat body includes a backrest and a base, and the base and the backrest jointly define a child seating space. The backrest has a first side edge and a second side edge arranged transversely opposite to each other, and the energy-absorbing part is connected to the first side edge or the second side edge. When the child seat is subjected to a lateral impact force, the energy-absorbing part can deform by collapsing to absorb part of the impact force, thereby reducing the impact force on the child and reducing the injury degree of the child. In particular, in the application, the energy-absorbing part includes a first base and a first boss connected to the first base. When the energy-absorbing part is subjected to an impact, the first boss is first subjected to an impact force to produce a collapsing deformation and form a first energy absorption. When the impact force is transmitted to the first base, the base produces a collapsing deformation and forms a second energy absorption. Compared with one-time energy absorption cushioning, the energy-absorbing part in the application can form two-time energy absorption cushioning, thereby further reducing the impact force on the child and improving the safety performance.

[0041] Furthermore, in the application, the first base defines a first cavity, and the first boss defines a second cavity. Compared with the structure in which the first base and the first boss are solid and absorb energy by compression, the application absorbs energy by collapsing, which can provide a larger deformation space and better energy absorption effect, and can also save materials to reduce material costs. Further, in the application, the first cavity and the second cavity are communicated. Compared with the structure in which the first cavity and the second cavity are isolated, no gas compression occurs in the second cavity during the collapsing of the first boss, thereby facilitating the collapsing of the first boss.

[0042] Further, in the application, the opening of the first cavity is larger than the opening of the second cavity, so that the first base can deform inwardly when the first boss collapses. Therefore, the overall collapsing of the energy-absorbing part does not easily excessively pressurize the adjacent components, thereby reducing the damage of the energy-absorbing part to other adjacent components due to the collapsing. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from the structures shown in these drawings without any creative effort.

[0044] Figure 1 Fig. 1 is a first perspective view of a child seat according to an embodiment of the present application;

[0045] Figure 2 Fig. 2 is a partial enlarged view of A in Fig. 1; Figure 1

[0046] Figure 3 Fig. 3 is a first perspective view of an energy-absorbing portion according to an embodiment of the present application;

[0047] Figure 4 Fig. 4 is a second perspective view of the energy-absorbing portion according to an embodiment of the present application;

[0048] Figure 5 Fig. 5 is a partial enlarged view of B in Fig. 1; Figure 4

[0049] Figure 6 Fig. 6 is a first perspective view of a seat body according to an embodiment of the present application;

[0050] Figure 7 Fig. 7 is a partial enlarged view of C in Fig. 1; Figure 6

[0051] Figure 8 Fig. 8 is a second perspective view of the child seat according to an embodiment of the present application;

[0052] Figure 9 Fig. 9 is a partial enlarged view of D in Fig. 1; Figure 8

[0053] Figure 10 Fig. 10 is a second perspective view of the seat body according to an embodiment of the present application;

[0054] Figure 11 Fig. 11 is a third perspective view of the child seat according to an embodiment of the present application; wherein the footrest is opened forwardly and the headrest is opened upwardly;

[0055] Figure 12 Fig. 12 is a perspective view of a second energy-absorbing portion according to an embodiment of the present application;

[0056] Figure 13 Fig. 13 is a side view of a first energy-absorbing portion according to an embodiment of the present application, viewed in a direction perpendicular to a first wall surface; wherein the area S1 and the range of the area S2 are shown, S2 including S1;

[0057] Figure 14 Fig. 14 is a sectional view of the first energy-absorbing portion according to an embodiment of the present application.

[0058] BRIEF DESCRIPTION OF THE DRAWINGS

[0059] 10 - child seat; ​​​​

[0060] 100 - seat body;

[0061] 110 - backrest;

[0062] 111 - back portion;

[0063] 112 - first side wing portion; 1121 - first side wing plate; 1122 - first flange; 1123 - first gap; 1124 - first through hole;

[0064] 113 - second side wing portion; 1131 - second side wing plate; 1132 - second flange; 1133 - second gap;

[0065] 114 - headrest portion;

[0066] 115 - first fixing hole;

[0067] 116 - second fixing hole;

[0068] 117 - third fixing hole;

[0069] 118 - fourth fixing column; 1181 - second connecting hole;

[0070] 200 - base;

[0071] 210 - footrest;

[0072] 300 - first energy-absorbing portion;

[0073] 310 - first base; 311 - first concave cavity; 312 - second wall surface; 313 - third wall surface;

[0074] 320 - first boss; 321 - second concave cavity; 322 - first wall surface;

[0075] 330 - first protruding portion; 331 - first connecting surface;

[0076] 340 - second protruding portion; 341 - second connecting surface;

[0077] 350 - third protruding portion; 351 - third concave cavity;

[0078] 360 - connecting piece; 361 - first connecting hole;

[0079] 370 - first fixing column;

[0080] 380 - second fixing column;

[0081] 390 - third fixing column;

[0082] 400 - second energy-absorbing portion;

[0083] 410 - second base; 411 - fourth concave cavity;

[0084] 420 - second boss; 421 - fifth concave cavity.

[0085] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments in conjunction with the accompanying drawings. DETAILED DESCRIPTION

[0086] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0087] With the development of modern society, private cars are often chosen as the travel mode for family travel. For families including children, child seats are often used to protect the personal safety of children when traveling by private cars. The method of protecting children by child seats includes buffering to reduce the effect of impact force and protecting the personal safety of children. In the event of a car accident, the impact force on the side of the car poses a greater threat to personal safety, but the side protection measures of child seats are insufficient, resulting in insufficient buffering performance of child seats and too low safety performance of child seats, so that children are injured under the action of side impact force, endangering the personal safety of child passengers.

[0088] An embodiment of the present application provides a child seat 10 which can be installed on a car, in particular, the child seat 10 can be installed on a small or medium-sized private car. When the child seat 10 is in a working state, the child seat 10 is installed on the rear seat of the car, and when the car is subjected to impact force, the child seat 10 can well protect the child, thereby improving the safety of the child when riding. The child seat 10 is provided with a buffering facility, so that the child seat 10 has buffering performance when subjected to impact force, to reduce the effect of impact force on the child seat 10 and improve the safety performance of the child seat 10. The method of installing the child seat 10 on the car includes forward installation (the child's line of sight is in the same direction as the driving direction of the vehicle) and reverse installation (the child's line of sight is opposite to the driving direction of the vehicle). Different installation methods are determined by the age, height and weight of the child. When the child is young, short or light, reverse installation is usually used, and when the child meets the use requirements in terms of age, weight or height, forward installation is usually used.

[0089] Referring to Figures 1-3The child seat 10 comprises a seat body 100 and an energy-absorbing part. The seat body 100 comprises a backrest 110 and a base 200 connected to each other. The base 200 is configured to be mounted on a seat of a vehicle, such that the child seat 10 is less likely to slide off the seat of the vehicle when the vehicle is subjected to an impact force, thereby ensuring the safety of a child seated in the child seat 10. The backrest 110 has a first side and a second side arranged opposite to each other. The energy-absorbing part is connected to the first side or the second side of the backrest 110. Hereinafter, the energy-absorbing part connected to the first side of the backrest 110 is taken as an example for description.

[0090] Referring to Figure 1 and Figure 11 In some embodiments, the backrest 110 comprises a headrest 114. The headrest 114 is configured to be slidable up and down, so as to adjust the height of the headrest 114, thereby adapting the headrest 114 to children of different heights, and improving the adaptability of the child seat 10. In some embodiments, the base 200 comprises a footrest 210. The footrest 210 is configured to be slidable forward and backward along the base 200, so as to adjust the length of the footrest 210, thereby adapting the footrest 210 to children of different heights, and improving the adaptability of the child seat 10.

[0091] During driving of the vehicle, if the child seat 10 is subjected to a lateral impact force, the first side of the backrest 110 or the second side of the backrest 110 is subjected to the impact force. The impact force will be transmitted to the child, thereby endangering the safety of the child. In order to improve the safety performance, the child seat 10 needs to buffer the impact force, so as to reduce the impact force transmitted to the child. In the present application, the energy-absorbing part is arranged on the first side of the backrest 110. The energy-absorbing part is configured to provide buffering, so as to reduce the effect of the lateral impact force, and improve the safety performance of the child seat 10.

[0092] In some embodiments, a plurality of energy-absorbing parts are arranged on the first side of the backrest 110. The energy-absorbing parts are configured to provide buffering, so as to further improve the buffering performance of the child seat 10, and further improve the safety performance of the child seat 10.

[0093] In some embodiments, the material of the energy-absorbing part comprises a plastic material. Specifically, the energy-absorbing part is made of 60% of PP7633-3 and 40% of VMX6102. On the one hand, the plastic material can improve the plasticity of the energy-absorbing part, thereby improving the energy-absorbing effect of the energy-absorbing part. On the other hand, the plastic material can also improve the structural strength of the energy-absorbing part.

[0094] In order to reduce the effect of impact force and improve the buffering performance, the energy absorption part includes a first base 310 connected to the backrest 110 and a first boss 320 connected to the side of the first base 310 away from the backrest 110. When the side is subjected to impact force, the energy absorption part is used to reduce the effect of impact force, wherein the first boss 320 is located on the side away from the backrest 110, the first boss 320 is used to reduce the effect of impact force first, so that the effect of impact force is reduced, the first base 310 is located between the backrest 110 and the first boss 320, and the first base 310 is used to reduce the effect of impact force further, so that the effect of impact force is further reduced. That is, the first boss 320 and the first base 310 sequentially buffer the effect of impact force, so as to improve the buffering performance of the energy absorption part, so as to reduce the effect of impact force on the child seat 10 and improve the safety performance of the child seat 10. The first base 310 defines a first cavity 311 with an opening facing the backrest 110, and the first boss 320 defines a second cavity 321 with an opening facing the backrest 110. When the first boss 320 and the first base 310 are subjected to impact force, the first cavity 311 and the second cavity 321 cause the first boss 320 and the first base 310 to collapse, so that the first boss 320 and the first base 310 further reduce the effect of impact force, the buffering performance of the first boss 320 and the first base 310 is further improved, and the buffering performance of the energy absorption part is further improved, so that the buffering performance of the child seat 10 is improved, and the safety performance of the child seat 10 is further improved.

[0095] In order to further improve the buffering performance of the first boss 320 and the first base 310 and improve the safety performance of the child seat 10. The first cavity 311 and the second cavity 321 are in communication, and when the first boss 320 and the first base 310 are subjected to impact force, the effect of the collapse of the first boss 320 and the first base 310 is improved, and the effect of the impact force on the energy absorption part is further reduced, so that the buffering performance of the child seat 10 is further improved, and the safety performance of the child seat 10 is further improved. The opening of the first cavity 311 is larger than the opening of the second cavity 321, and when the first boss 320 and the first base 310 are subjected to impact force, the first boss 320 and the first base 310 collapse towards the outside of the energy absorption part due to the larger opening of the first cavity 311 than the opening of the second cavity 321, so that the first boss 320 and the first base 310 further buffer the effect of impact force, so that the effect of impact force on the energy absorption part is further reduced, so that the buffering performance of the child seat 10 is further improved, and the safety performance of the child seat 10 is further improved.

[0096] The effect of the impact force on the energy-absorbing portion causes the first boss 320 and the first base 310 to collapse. The collapsing of the energy-absorbing portion includes a first collapse (the first boss 320 collapses due to the impact force) and a second collapse (the first base 310 collapses due to the impact force). The first boss 320 has a first wall surface 322 facing away from the backrest 110. A projection plane is parallel to the first wall surface 322. The first boss 320 forms a first orthographic projection on the projection plane. The energy-absorbing portion forms a second orthographic projection on the projection plane. The area of the first orthographic projection is S1, and the area of the second orthographic projection is S2. If S1 / S2 is too small, the area of the first orthographic projection is too small relative to the area of the second orthographic projection. The effect of the first collapse is small, and the effect of the first collapse is too low relative to the effect of the second collapse. This results in a low cushioning performance of the child seat 10, which leads to a low safety performance of the child seat 10. If S1 / S2 is too large, the area of the first orthographic projection is too large relative to the area of the second orthographic projection. The effect of the second collapse is not obvious, and the effect of the second collapse is too low relative to the effect of the first collapse. This results in a low cushioning performance of the child seat 10, which leads to a low safety performance of the child seat 10. Therefore, a first safety range is provided. When S1 / S2 is within the first safety range, the ratio of the area of the first orthographic projection to the area of the second orthographic projection is appropriate. The effects of the first collapse and the second collapse are obvious, the effect of the collapse is improved, the cushioning performance of the child seat 10 is improved, and the safety performance of the child seat 10 is improved. Figure 13 In some embodiments, the area of the first orthographic projection S1 and the area of the second orthographic projection S2 satisfy 0.5≤S1 / S2≤0.9. For example, S1 / S2 can be 0.5, 0.6, 0.7, 0.8, or 0.9. When 0.5≤S1 / S2≤0.9, the effect of the collapse is obvious, the cushioning performance of the child seat 10 is improved, and the safety performance of the child seat 10 is improved.

[0097] The first boss 320 has a first wall surface 322 facing away from the backrest 110. The height of the first boss 320 is provided in a direction perpendicular to the first wall surface 322. When the energy-absorbing part is subjected to an impact force, the impact force acts on the energy-absorbing part in the height direction of the first boss 320, so that the height of the first boss 320 is increased, and the buffering performance of the energy-absorbing part is improved. For the height dimension of the first boss 320, when the height dimension is too large, the distance between the first boss 320 and the backrest 110 is increased, the buffering performance of the first boss 320 is improved, the effect of collapse is obvious, and the buffering performance of the child seat 10 is improved, so that the safety performance of the child seat 10 is improved. However, due to the increase in the distance between the first boss 320 and the backrest 110, the space ratio of the energy-absorbing part is increased, which is not conducive to daily use and placement, and reduces the adaptability of the child seat 10, which may make the child seat 10 unable to be installed in some cars. When the height dimension is too small, the distance between the first boss 320 and the backrest 110 is reduced, the space ratio of the energy-absorbing part is reduced, which is suitable for daily use and placement, improves the adaptability of the child seat 10, and the child seat 10 is easy to install in a car. However, due to the reduction in the distance between the first boss 320 and the backrest 110, the buffering performance of the first boss 320 is reduced, the effect of collapse is not obvious, the buffering performance of the child seat 10 is reduced, and the safety performance of the child seat 10 is reduced. Therefore, a second safety range is provided, and when the height dimension of the first boss 320 is within the second safety range, the height dimension is moderate, which is suitable for daily use and placement, improves the adaptability of the child seat 10, the distance between the first boss 320 and the backrest 110 is moderate, the buffering performance of the first boss 320 is moderate, the effect of collapse is obvious, the effect of collapse is good, the buffering performance of the child seat 10 is good, and the safety performance of the child seat 10 is good. Referring to Figure 14 In some embodiments, the height dimension L of the first boss 320 satisfies: 2mm≤L≤5mm. For example, L can be 2mm, 3mm, 4mm or 5mm. That is, the second safety range is 2mm to 5mm. When 2mm≤L≤5mm, the height dimension is moderate, which is suitable for daily use and placement, the distance between the first boss 320 and the backrest 110 is moderate, the effect of collapse is obvious, the buffering performance of the child seat 10 is good, and the safety performance of the child seat 10 is good.

[0098] When the energy-absorbing portion is subjected to an impact force, the energy-absorbing portion collapses to provide cushioning, and the effect of the collapse is enhanced as the area of the collapse increases, thereby enhancing the cushioning performance of the child seat 10. This enhances the safety performance of the child seat 10. The area of the second orthogonal projection is the area of the orthogonal projection of the energy-absorbing portion on the projection plane, and the area of the second orthogonal projection includes the area of the collapse. Therefore, increasing the area of the second orthogonal projection enhances the cushioning performance of the child seat 10. In some embodiments, the backrest 110 includes a back portion 111, a first side wing portion 112, and a second side wing portion 113. The first side wing portion 112 and the second side wing portion 113 are respectively connected to two laterally opposite sides of the back portion 111. The first side wing portion 112 includes a first side edge, and the second side wing portion 113 includes a second side edge. Since the child seat 10 is suitable for a car, if the side edges of the backrest 110 are too thick, the child seat 10 will not be suitable for the car seat, and the safety performance of the child seat 10 will be reduced. The side areas of the first side wing portion 112 and the second side wing portion 113 can be large to protect the child from the sides in the child seat 10, so that the child is relatively fixed with the child seat 10 on the sides, and the child seat 10 can be avoided from being unsuitable for the car seat. The area of the first side edge of the back portion 111 is smaller than the area of the first side wall of the first side wing portion 112, and the area of the second side edge of the back portion 111 is smaller than the area of the second side wall of the second side wing portion 113. Therefore, the area of the second orthogonal projection of the energy-absorbing portion of the first side wall of the first side wing portion 112 is larger than the area of the second orthogonal projection of the energy-absorbing portion of the first side edge of the back portion 110, the effect of the collapse of the energy-absorbing portion of the first side wall of the first side wing portion 112 is higher than the effect of the collapse of the energy-absorbing portion of the first side edge of the back portion 110, the cushioning performance of the child seat 10 including the first side wing portion 112 is higher than the cushioning performance of the child seat 10 not including the first side wing portion 112, and the safety performance of the child seat 10 including the first side wing portion 112 is higher than the safety performance of the child seat 10 not including the first side wing portion 112. Therefore, the first side wall is arranged on the first side wing portion 112, the area of the second orthogonal projection of the energy-absorbing portion is increased, the effect of the collapse is obvious, the cushioning performance of the child seat 10 is enhanced, and the safety performance of the child seat 10 is improved.

[0099] The energy-absorbing portion is connected with the first side wing portion 112, and in the working state of the child seat 10, the two are relatively fixed, so that the connection of the energy-absorbing portion is stable, the effect of the collapse of the energy-absorbing portion is improved, the buffering performance of the child seat 10 is improved, and the safety performance of the child seat 10 is improved. The connection mode of the energy-absorbing portion and the first side wing portion 112 includes bonding, welding, and threaded connection and the like. In some embodiments, the energy-absorbing portion includes oppositely arranged third and fourth side edges, the third side edge has a second wall surface 312 facing away from the fourth side edge, the second wall surface 312 is provided with a first fixing column 370, the fourth side edge has a third wall surface 313 facing the third side edge, the third wall surface 313 is provided with a second fixing column 380, the first fixing column 370 and the second fixing column 380 extend in the same direction, the first side wing portion 112 is provided with a first fixing hole 115 and a second fixing hole 116, the first fixing column 370 is provided in the first fixing hole 115 and is threadedly connected with the first side wing portion 112, the second fixing column 380 is provided in the second fixing hole 116 and is threadedly connected with the first side wing portion 112, the energy-absorbing portion is threadedly connected with the first side wing portion 112, and the two are stably connected, so that the energy-absorbing portion is stably connected with the first side wing portion 112, the buffering performance of the child seat 10 is improved, and the safety performance of the child seat 10 is improved. Compared with bonding and welding, threaded connection can be conveniently disassembled and replaced, so as to prevent the energy-absorbing portion from aging, reduce the collapse effect of the energy-absorbing portion, reduce the buffering performance of the child seat 10, and reduce the safety performance of the child seat 10. The energy-absorbing portion and the first side wing portion 112 are connected by using the first fixing column 370, the second fixing column 380, the first fixing hole 115, and the second fixing hole 116, the first fixing column 370 and the second fixing column 380 are respectively matched with the first fixing hole 115 and the second fixing hole 116, and after matching, threaded connection is used, so that the energy-absorbing portion and the first side wing portion 112 are accurately positioned, the collapse effect of the energy-absorbing portion is good, the buffering performance of the child seat 10 is improved, and the safety performance of the child seat 10 is improved.

[0100] In some embodiments, the number of connections between the energy-absorbing portion and the fixed column of the first side wing portion 112 and the fixed hole is three. The second wall surface 312 is further provided with a third fixed column 390, and the first side wing portion 112 is further provided with a third fixed hole 117. The third fixed column 390 is arranged in the third fixed hole 117 and is threadedly connected with the first side wing portion 112. Compared with the case where the number of connections is two, the three fixed columns and the three fixed holes are used for three-point positioning, so that the positioning of the energy-absorbing portion and the first side wing portion 112 is further accurate, and the reliability of the connection between the energy-absorbing portion and the first side wing portion 112 is improved, so that the collapse effect of the energy-absorbing portion is improved, the buffering performance of the child seat 10 is improved, and the safety performance of the child seat 10 is improved. Further, viewed in the direction from the third side edge to the fourth side edge, the third fixed column 390 is arranged between the first fixed column 370 and the second fixed column 380, which further improves the reliability of the connection between the energy-absorbing portion and the first side wing portion 112, further improves the collapse effect of the energy-absorbing portion, further improves the buffering performance of the child seat 10, and further improves the safety performance of the child seat 10. Still further, the first fixed column 370, the second fixed column 380, and the third fixed column 390 are all connected to the first base 310, which increases the distance between the first fixed column 370 and the second fixed column 380, so that the positioning of the energy-absorbing portion and the first side wing portion 112 is further accurate, the collapse effect of the energy-absorbing portion is improved, the buffering performance of the child seat 10 is improved, and the safety performance of the child seat 10 is improved. Moreover, the connection to the first base 310 makes the energy-absorbing portion easy to process, reduces the manufacturing process, and reduces the manufacturing cost.

[0101] The axis of the first fixed column 370, the axis of the second fixed column 380, and the axis of the third fixed column 390 are parallel to each other, in order to make the positioning of the energy-absorbing part more accurate, the energy-absorbing part further comprises a connecting piece 360, the connecting piece 360 is provided with a first connecting hole 361, the hole axis of the first connecting hole 361 is parallel to the thickness direction of the connecting piece 360 and parallel to the axis of the first fixed column 370, the first side wing part 112 is provided with a first through hole 1124, the first through hole 1124 penetrates the first side wing part 112 in the direction from the first side wing part 112 to the second side wing part 113, the connecting piece 360 is not parallel to the axis of the first positioning column, so that the positioning of the energy-absorbing part is further accurate, the effect of the collapse of the energy-absorbing part is further improved, and the buffering performance of the child seat 10 is further improved, so that the safety performance of the child seat 10 is further improved. The first side wing part 112 has a first side wall away from the second side wing part 113, the fourth fixed column 118 is arranged on the side of the first side wing part 112 away from the first side wall, the fourth fixed column 118 is provided with a second connecting hole 1181, the connecting piece 360 is arranged in the first through hole 1124, and the connecting piece 360 is threadedly connected with the fourth fixed column 118 through the first connecting hole 361 and the second connecting hole 1181. The fourth fixed column 118 is threadedly connected with the second connecting hole 1181, and the two are stably connected, so as to improve the buffering performance of the child seat 10, so as to improve the safety performance of the child seat 10. And compared with bonding and welding, the fourth fixed column 118 is threadedly connected with the second connecting hole 1181 and the first connecting hole 361, so that the disassembly and replacement of the energy-absorbing part are more convenient. At the same time, since the connecting piece 360 is arranged in the first through hole 1124 and is threadedly connected with the fourth fixed column 118 through the first connecting hole 361 and the second connecting hole 1181, when the energy-absorbing part collapses, the fourth fixed column 118 provides support to the energy-absorbing part through the connecting piece 360, so that the effect of the collapse of the energy-absorbing part is improved, the buffering performance of the child seat 10 is improved, and the safety performance of the child seat 10 is improved. In some embodiments, the connecting piece 360 is connected to the third wall surface 313 and protrudes into the first recess 311, so that the connecting piece 360 further provides support to the energy-absorbing part, so that the effect of the collapse of the energy-absorbing part is further improved, the buffering performance of the child seat 10 is further improved, and the safety performance of the child seat 10 is further improved.

[0102] The energy-absorbing part is integrally injection molded, and the draft angle α of the connecting piece 360 satisfies: 4°≤α≤7°, so as to improve the deformation problem generated during production, reduce the defective products during production, improve the production efficiency, and also improve the assembly production rate, further improve the production efficiency. The moderate draft angle α improves the reliability and stability of the fixation of the energy-absorbing part, further improves the effect of the collapse of the energy-absorbing part, further improves the buffering performance of the child seat 10, and further improves the safety performance of the child seat 10.

[0103] The third side has a second wall surface 312 facing away from the fourth side, the first fixing column 370 and the third fixing column 390 are arranged on the second wall surface 312, in order to keep the first fixing column 370, the second fixing column 380 and the third fixing column 390 parallel, so that the energy absorption part is positioned reliably. In some embodiments, the second wall surface 312 is provided with a first protruding part 330, the first protruding part 330 has a first connecting surface 331 arranged perpendicular to the axis of the first fixing column 370, the first protruding part 330 is connected to the first connecting surface 331, and the second wall surface 312 is further provided with a second protruding part 340, the second protruding part 340 has a second connecting surface 341 arranged perpendicular to the axis of the second fixing column 380, and the second protruding part 340 is connected to the second connecting surface 341. The first fixing column 370 is arranged on the first protruding part 330, and the second fixing column 380 is arranged on the second protruding part 340, so that the first fixing column 370 and the second fixing column 380 are respectively arranged on the plane perpendicular to the respective axis, and the first fixing column 370 and the second fixing column 380 further provide support to the energy absorption part, so that the energy absorption part is positioned accurately, the effect of the collapse of the energy absorption part is further improved, the cushioning performance of the child seat 10 is further improved, and the safety performance of the child seat 10 is further improved. And the second wall surface 312 does not need to be perpendicular to the axis of the first fixing column 370, which improves the adaptability of the second wall surface 312.

[0104] In the direction perpendicular to the axis of the first fixing column 370, the first protruding part 330 and the second protruding part 340 are only connected by the second wall surface 312, when the energy absorption part is subjected to an impact force, the support provided by the first protruding part 330 and the second protruding part 340 is unstable, which may cause the connection of the first fixing column 370 and the second fixing column 380 to be unstable, so that the effect of the collapse of the energy absorption part is reduced. Therefore, the second wall surface 312 is further provided with a third protruding part 350, one end of the third protruding part 350 is connected to the first protruding part 330, and the other end is connected to the second protruding part 340, the first protruding part 330, the second protruding part 340 and the third protruding part 350 face one side of the first cavity 311 and jointly define a third cavity 351 communicating with the first cavity 311. The third cavity 351 is used to connect the first protruding part 330 and the second protruding part 340, so that the first protruding part 330 and the second protruding part 340 are connected stably, when the energy absorption part is subjected to an impact force, the support provided by the first protruding part 330 and the second protruding part 340 is stable, which strengthens the connection of the first fixing column 370 and the second fixing column 380, so that the energy absorption part is connected stably with the first side wing part 112, the effect of the collapse of the energy absorption part is further improved, the cushioning performance of the child seat 10 is further improved, and the safety performance of the child seat 10 is further improved.

[0105] In some embodiments, the first side wing part 112 comprises a first side wing plate 1121 and a first flange 1122, one side of the first side wing plate 1121 is connected to the back part 111, the other side of the first side wing plate 1121 is connected to the first flange 1122, the first flange 1122 is located on the side of the first side wing plate 1121 away from the back part 111, the first flange 1122 and the first side wing plate 1121 together define a first gap 1123, the energy-absorbing part is at least partially arranged in the first gap 1123. Alternatively, the second side wing part 113 comprises a second side wing plate 1131 and a second flange 1132, one side of the second side wing plate 1131 is connected to the back part 111, the other side of the second side wing plate 1131 is connected to the second flange 1132, the second flange 1132 is located on the side of the second side wing plate 1131 away from the back part 111, the second flange 1132 and the second side wing plate 1131 together define a second gap 1133, the second energy-absorbing part 400 is at least partially arranged in the second gap 1133. For the energy-absorbing part, in the direction perpendicular to the axis of the first fixing hole 115, the first flange 1122 and the first side wing plate 1121 limit the energy-absorbing part, so that when the energy-absorbing part is subjected to an impact force, by limiting the energy-absorbing part, the gap between the energy-absorbing part and the first side wing part 112 is reduced, the stability of the connection between the energy-absorbing part and the first side wing part 112 is improved, the effect of the collapse of the energy-absorbing part is improved, the cushioning performance of the child seat 10 is improved, and the safety performance of the child seat 10 is improved.

[0106] In order to further make the connection between the energy-absorbing part and the first side wing part 112 tight, and further improve the effect of the collapse of the energy-absorbing part. The first protruding part 330, the second protruding part 340 and the third protruding part 350 are all arranged in the first gap 1123, and the first protruding part 330, the second protruding part 340 and the third protruding part 350 all abut against the first flange 1122. In the direction perpendicular to the axis of the first fixing hole 115, the first flange 1122 and the first side wing plate 1121 limit the first protruding part 330, the second protruding part 340 and the third protruding part 350, so as to further limit the energy-absorbing part, further reduce the gap between the energy-absorbing part and the first side wing part 112, further improve the stability of the connection between the energy-absorbing part and the first side wing part 112, further improve the effect of the collapse of the energy-absorbing part, further improve the cushioning performance of the child seat 10, and further improve the safety performance of the child seat 10. In some embodiments, the first boss 320 is located outside the first gap 1123, and in the direction from the second side wing part 113 to the first side wing part 112, the first boss 320 protrudes from the first flange 1122. So that the first boss 320 is spaced from the first flange 1122, so that the first boss 320 reduces the influence when collapsing, so as to improve the effect of the collapse of the energy-absorbing part, improve the cushioning performance of the child seat 10, and improve the safety performance of the child seat 10.

[0107] In some embodiments, the energy absorbing portion includes a first energy absorbing portion 300 connected to the first side wing portion 112 and a second energy absorbing portion 400 connected to the second side wing portion 113 to reduce the effect of the impact force. The second energy absorbing portion 400 includes a second base 410 connected to the second side wing portion 113 and a second boss 420 connected to a side of the second base 410 away from the second side wing portion 113. That is, the second boss 420 and the second base 410 sequentially perform the buffering effect, respectively, to improve the buffering performance of the second energy absorbing portion 400, so that the safety performance of the child seat 10 is improved. The second base 410 defines a fourth cavity 411 with an opening facing the second side wing portion 113, and the second boss 420 defines a fifth cavity 421 with an opening facing the second side wing portion 113, and the fourth cavity 411 and the fifth cavity 421 are in communication. When the second energy absorbing portion 400 is subjected to an impact force, the fourth cavity 411 and the fifth cavity 421 cause the second boss 420 and the second base 410 to collapse, so that the buffering performance of the child seat 10 is improved, and the safety performance of the child seat 10 is further improved. The opening of the fourth cavity 411 is larger than the opening of the fifth cavity 421, so that the first boss 320 and the first base 310 collapse outwardly of the first energy absorbing portion 300, so that the first boss 320 and the first base 310 further perform the buffering effect, so that the buffering performance of the child seat 10 is further improved, and the safety performance of the child seat 10 is further improved.

[0108] It should be noted that other contents of the automobile disclosed in the present application can refer to the prior art, which will not be described here.

[0109] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications will also change accordingly.

[0110] In addition, when an element is described as "fixed" to another element, it can be directly on the other element, or one or more intervening elements can be present therebetween. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intervening elements can be present therebetween.

[0111] In addition, if the description in the embodiments of the present application involves "first", "second", etc., the description of "first", "second", etc. is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes include A scheme, or B scheme, or A and B are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0112] In addition, it should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application, but the present application can be implemented in many different forms, and is not limited to the embodiments described in the specification. These embodiments are not additional limitations on the content of the present application, and the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. And, the above technical features continue to combine, form various embodiments not listed above, which are considered to be within the scope of the present application. Furthermore, for those skilled in the art, the above description can be improved or changed, and all these improvements and changes shall fall within the scope of the claims of the present application.

Claims

1. A child seat, characterized in that The child seat comprises: a seat body comprising a backrest and a base connected to each other, the backrest having a first side edge and a second side edge arranged transversely opposite to each other; an energy-absorbing portion connected to the first side edge or the second side edge, the energy-absorbing portion comprising a first base connected to the backrest and a first boss connected to a side of the first base away from the backrest, the first base defining a first cavity with an opening facing the backrest, and the first boss defining a second cavity with an opening facing the backrest, the first cavity and the second cavity being in communication; wherein the opening of the first cavity is larger than the opening of the second cavity; the backrest comprises a back portion, a first side wing portion, and a second side wing portion; the energy-absorbing portion comprises a third side edge and a fourth side edge arranged opposite to each other, the third side edge having a second wall surface away from the fourth side edge, the second wall surface being provided with a first fixing column, the fourth side edge having a third wall surface facing the third side edge, the third wall surface being provided with a second fixing column, the first fixing column and the second fixing column extending in the same direction, the first side wing portion being provided with a first fixing hole and a second fixing hole, the first fixing column being arranged in the first fixing hole and being threadedly connected to the first side wing portion, and the second fixing column being arranged in the second fixing hole and being threadedly connected to the first side wing portion; the second wall surface is further provided with a third fixing column, and the first side wing portion is further provided with a third fixing hole, the third fixing column being arranged in the third fixing hole and being threadedly connected to the first side wing portion; when viewed in a direction along the third side edge pointing to the fourth side edge, the third fixing column is arranged between the first fixing column and the second fixing column; the first fixing column, the second fixing column, and the third fixing column are all connected to the first base.

2. The child seat according to claim 1, wherein: the first boss has a first wall surface away from the backrest, a projection plane is parallel to the first wall surface, the first boss forms a first orthographic projection on the projection plane, and the energy-absorbing portion forms a second orthographic projection on the projection plane; an area of the first orthographic projection S1 and an area of the second orthographic projection S2 satisfy: 0.5≤S1 / S2≤0.

9.

3. The child seat according to claim 1, wherein: the first boss has a first wall surface away from the backrest, and a height dimension L of the first boss in a direction perpendicular to the first wall surface satisfies: 2mm≤L≤5mm.

4. The child seat according to claim 1, wherein: the first side wing portion and the second side wing portion are respectively connected to two sides of the back portion transversely opposite to each other, the first side wing portion comprises the first side edge, and the second side wing portion comprises the second side edge.

5. The child seat according to claim 1, wherein: the energy-absorbing portion further comprises a connecting piece provided with a first connecting hole, an axis of the first connecting hole is parallel to a thickness direction of the connecting piece and parallel to an axis of the first fixing column. The first side wing part is provided with a first through hole penetrating the first side wing part in a direction from the first side wing part to the second side wing part, the first side wing part has a first side wall away from the second side wing part, and a fourth fixing column is arranged on a side of the first side wing part away from the first side wall, and the fourth fixing column is provided with a second connecting hole. The connecting piece is connected to the third wall surface and extends out of the first cavity. The energy-absorbing part is integrally injection molded, and the draft angle α of the connecting piece satisfies 4°≤α≤7°.

6. The child seat of claim 5, wherein The second wall surface is provided with a first protruding part having a first connecting surface arranged perpendicularly to an axis of the first fixing column, and the first protruding part is connected to the first connecting surface. The second wall surface is further provided with a second protruding part having a second connecting surface arranged perpendicularly to an axis of the second fixing column, and the second protruding part is connected to the second connecting surface.

7. The child seat of claim 6, wherein The second wall surface is further provided with a third protruding part connected to the first protruding part at one end and connected to the second protruding part at the other end, and the first protruding part, the second protruding part and the third protruding part together define a third cavity facing the first cavity and communicating with the first cavity. The first side wing part comprises a first side wing plate and a first flange, one side of the first side wing plate is connected to the back part, the other side of the first side wing plate is connected to the first flange, the first flange is located on a side of the first side wing plate away from the back part, and the first flange and the first side wing plate together define a first gap, and the energy-absorbing part is at least partially arranged in the first gap.

8. The child seat of claim 7, wherein The first protruding part, the second protruding part and the third protruding part are all arranged in the first gap, and the first protruding part, the second protruding part and the third protruding part all abut against the first flange at one side; The first boss is located outside the first gap, and in a direction from the second side wing part to the first side wing part, the first boss protrudes from the first flange.

9. The child seat of claim 5, wherein The energy-absorbing part comprises a first energy-absorbing part and a second energy-absorbing part, the first energy-absorbing part is connected to the first side wing part, the second energy-absorbing part is connected to the second side wing part, the second energy-absorbing part comprises a second base connected to the second side wing part and a second boss connected to a side of the second base away from the second side wing part, the second base defines a fourth cavity with an opening facing the second side wing part, the second boss defines a fifth cavity with an opening facing the second side wing part, and the fourth cavity and the fifth cavity communicate with each other; The opening of the fourth cavity is larger than the opening of the fifth cavity.

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