Child safety seat and seat assembly thereof, side wing, and carrier comprising side wing

Abstract

A child safety seat and a seat assembly (A100) thereof, a side wing (C4), and a carrier (C1000) comprising the side wing (C4). The seat assembly (A100) comprises an upper housing (A20) and a lower housing (A40), the lower housing (A40) being cooperatively connected to the upper housing (A20), one of the upper housing (A20) and the lower housing (A40) being provided with a first positioning member (A10), and the other being provided with a second positioning member (A30); the first positioning member (A10) comprises a first positioning main body (A12) and a guide portion (A16) provided on the first positioning main body (A12); and the second positioning member (A30) abuts against the first positioning member (A10) under the guidance of the guide portion (A16).

Description

Child safety seats and their seat components, side wings, and vehicles containing side wings. Technical Field

[0001] This invention relates to the field of children's products technology, and in particular to a child safety seat and its seat components, side wings, and a vehicle including the side wings. Background Technology

[0002] A child safety seat is a seat specifically designed for children of different weights or ages, installed in a car to effectively improve children's safety while traveling. A child safety seat typically consists of a seat section and a backrest, with the seat section generally formed by assembling an upper and lower shell. However, assembling the upper and lower shells is difficult, inefficient, and inconvenient to manufacture.

[0003] In addition, to increase the strength and rigidity of the seat, multiple reinforcing ribs are usually installed inside the upper and lower shells to achieve the desired pressure resistance. However, at the junction of the reinforcing ribs and the flat surface, when light shines at a certain angle, a visual imperfection or shadow, commonly known as "watermarks," will appear on the surface of the seat, thus negatively affecting the appearance of the product.

[0004] Currently, some child safety seats have wings on the sides of the backrest. However, to facilitate the production and processing of the seats, no reinforcement structures are added, resulting in low strength, especially poor side impact performance. Of course, some seats add reinforcement structures to the side wings to improve strength, such as adding protrusions or bumps, or directly attaching expanded polypropylene (EPP) buffers to improve strength and cushioning performance. However, this method will make the structure too complicated, which is not conducive to production and processing. Summary of the Invention

[0005] Therefore, it is necessary to provide a seat assembly that is easy to assemble and a child safety seat using the seat assembly.

[0006] According to one aspect, a seat assembly for a child safety seat is provided, comprising:

[0007] Upper shell; and

[0008] The lower housing is connected to the upper housing. One of the upper housing and the lower housing is provided with a first positioning member, and the other is provided with a second positioning member. The first positioning member includes a first positioning body and a guide part provided on the first positioning body. The second positioning member abuts against the first positioning member under the guidance of the guide part.

[0009] According to the above-mentioned seat assembly, during the assembly process of the upper and lower shells, the guide part can guide the second positioning member to accurately align with the first positioning member, thereby achieving the contact between the second positioning member and the first positioning member, which is convenient to operate and has high assembly efficiency.

[0010] In one embodiment, the first positioning body has a first positioning hole, the second positioning member has a second positioning hole, the guide portion is partially disposed inside the first positioning hole and has a guide slope protruding from the first positioning hole. When the upper housing and the lower housing are connected, the guide slope is used to contact the inner wall of the second positioning hole to guide the second positioning member to align with the first positioning member.

[0011] In one embodiment, a plurality of the guide portions are spaced apart inside the first positioning hole, and the angle formed by each guide ramp and the inner wall of the second positioning hole is an acute angle.

[0012] In one embodiment, one of the upper housing and the lower housing is provided with a third positioning member, and the other is provided with a fourth positioning member. The third positioning member has a third positioning hole, and the fourth positioning member is inserted into the third positioning hole.

[0013] In one embodiment, the third positioning member includes a positioning portion disposed within the third positioning hole, and the fourth positioning member abuts against the positioning portion.

[0014] In one embodiment, the third positioning member has a third positioning hole, and a plurality of positioning parts are spaced apart inside the third positioning hole, and the length of each positioning part is less than the depth of the third positioning hole.

[0015] In one embodiment, the lower housing is provided with a plurality of first positioning elements, and the upper housing is provided with a plurality of second positioning elements corresponding to the plurality of first positioning elements.

[0016] In one embodiment, the seat assembly further includes a connector for connection to a vehicle seat and an adjustment webbing connected to the connector, the adjustment webbing contacting the surfaces of the plurality of first positioning members.

[0017] In one embodiment, the lower housing is provided with four first positioning members, wherein the distance between the two first positioning members near the front of the lower housing is smaller than the distance between the two first positioning members near the rear of the lower housing, and the adjusting webbing contacts the inner surface of the two first positioning members near the front of the lower housing and the outer surface of the two first positioning members near the rear of the lower housing.

[0018] In one embodiment, one of the upper housing and the lower housing is provided with a first fixing member, and the other is provided with a second fixing member, wherein the first fixing member and the second fixing member are fixedly connected by fasteners.

[0019] In one embodiment, the first fixing member has a positioning groove, and the end of the second fixing member is inserted into the positioning groove.

[0020] In one embodiment, the positioning groove has a bottom wall and a side wall connected to the bottom wall, the angle formed by the side wall and the bottom wall being an obtuse angle.

[0021] In one embodiment, the upper housing includes a seating portion and an anti-slip portion disposed on the front side of the seating portion, the height of the anti-slip portion being greater than the height of the seating portion, and the anti-slip portion extending from the left side to the right side of the upper housing in a left-right direction.

[0022] In one embodiment, the upper housing includes a support portion and two upper armrest portions connected to the support portion. The upper housing has notches on both sides of the support portion corresponding to the upper armrest portions. The lower housing includes a lower armrest portion corresponding to the upper armrest portions and a shielding portion corresponding to the notches.

[0023] According to another aspect, a child safety seat is also provided, including a seat assembly as described in any of the above, a backrest assembly detachably disposed on the seat assembly, and a headrest assembly movably disposed on the backrest assembly.

[0024] Therefore, it is necessary to provide a seat assembly that does not have obvious "watermark" defects on its surface and a child safety seat using the seat assembly.

[0025] According to one aspect, a seat assembly for a child safety seat is provided, comprising:

[0026] The upper housing includes an upper armrest for supporting a child's arm, and the upper housing further includes a first reinforcing rib connected to the upper armrest; and

[0027] The lower housing, which mates with the upper housing, includes a lower armrest portion for abutting against a vehicle seatbelt. The lower housing also includes a second reinforcing rib connected to the lower armrest portion, the rear side of which abuts against the front side of the first reinforcing rib.

[0028] The side wall of the lower housing and the lower armrest are integral parts.

[0029] According to the above seat assembly, reinforcing ribs are respectively provided on the upper and lower shells, and the reinforcing ribs of the upper and lower shells are attached to each other. Under the premise of meeting the strength requirements, the thickness of a single reinforcing rib can be made thinner and the length can be made shorter, so as to avoid obvious "watermark" defects at the connection between the shell and the reinforcing rib.

[0030] In one embodiment, the upper armrest includes a left side wall and an upper side wall that are connected to each other, and the first reinforcing rib is connected to the upper side wall and the left side wall respectively.

[0031] In one embodiment, the upper housing includes a seating portion, and the upper housing has a notch on each side of the seating portion. The upper housing also includes a partition surrounding the notch, and the first reinforcing rib is connected to the partition.

[0032] In one embodiment, the lower housing includes a bottom wall and side walls located on both sides of the bottom wall, the lower armrest includes an inner side wall connected to the side wall, the inner side wall being used to abut the seat belt, the second reinforcing rib being connected to the bottom wall and the side wall, and the top of the second reinforcing rib being connected to the inner side wall.

[0033] In one embodiment, the lower armrest includes a front sidewall and a right sidewall connected to each other, and an inner sidewall connects the front sidewall and the sidewall. When the upper housing and the lower housing are connected, the upper sidewall is connected to the right sidewall, and the left sidewall is connected to both the front sidewall and the inner sidewall.

[0034] In one embodiment, the second reinforcing rib has a stepped structure on the side away from the sidewall.

[0035] In one embodiment, the lengths of both the first reinforcing rib and the second reinforcing rib are less than the distance between the upper sidewall of the upper armrest and the bottom wall of the lower housing.

[0036] In one embodiment, the lower housing includes a shielding portion corresponding to the notch, and the lower armrest portion includes a third reinforcing rib parallel to the second reinforcing rib. The top of the third reinforcing rib is connected to the shielding portion, and a positioning groove is provided at the part of the third reinforcing rib connected to the shielding portion. The upper housing includes a positioning hook that engages in the positioning groove, and a stepped structure is provided on the third reinforcing rib. The partition portion of the upper housing abuts against the stepped structure of the third reinforcing rib.

[0037] In one embodiment, the upper housing further includes a fourth reinforcing rib, the top of which is connected to the upper sidewall of the upper armrest portion, and the fourth reinforcing rib is connected to one side of the first reinforcing rib.

[0038] In one embodiment, the upper housing further includes a fifth reinforcing rib, which is connected to the upper sidewall and the left sidewall of the upper armrest portion, and abuts against the inner sidewall and the right sidewall.

[0039] In one embodiment, the seat assembly further includes a storage box slidably disposed within the lower housing.

[0040] In one embodiment, the upper housing is provided with a first guide rail, the lower housing is provided with a second guide rail, and the storage box can slide along the first guide rail and the second guide rail.

[0041] In one embodiment, the first guide rail is further provided with a locking groove, and the storage box is further provided with a slider, the slider being able to slide within the locking groove, and the locking groove being able to limit the sliding stroke of the slider.

[0042] According to another aspect, a child safety seat is also provided, including a seat assembly as described in any of the above, a backrest assembly detachably disposed on the seat assembly, and a headrest assembly movably disposed on the backrest assembly.

[0043] One aspect of the present invention provides a side wing for a vehicle, the side wing including a side wing body and a reinforcing structure formed by the side wing body protruding outward.

[0044] In one embodiment, the reinforcing structure includes at least two reinforcing protrusions, each of which is formed by protruding outward from the side wing body and is spaced vertically along the length of the side wing body.

[0045] In one embodiment, the reinforcing protrusion extends from a first end of the side wing body to a second end of the side wing body in the width direction of the side wing body.

[0046] In one embodiment, the protrusion height of the reinforcing protrusion is set in a shape that is low at both ends and high in the middle along the lateral direction of the reinforcing protrusion from the first end to the second end.

[0047] In one embodiment, the longitudinal height of the reinforcing structure relative to the lower edge of the side wing body is greater than or equal to 280 mm.

[0048] In one embodiment, the side wing further includes a breathable structure, the breathable structure including a breathable groove, the breathable groove being a recess formed by the reinforcing protrusion at a corresponding position on the side wing body.

[0049] In one embodiment, the breathable structure further includes a plurality of breathable openings formed within the breathable groove.

[0050] Another aspect of the present invention provides a vehicle comprising a backrest, a seat, and the aforementioned side wings, wherein the lower end of the backrest is connected to the seat, and the side wings are connected to both sides of the backrest.

[0051] In one embodiment, the longitudinal height of the reinforcing structure relative to the upper surface of the seat portion is configured such that when a passenger sits on the seat portion, the horizontal position of the reinforcing structure corresponds to the passenger's shoulder.

[0052] In one embodiment, the angle between the side wing body and the backrest is greater than 90°.

[0053] Details of one or more embodiments of the present invention are set forth in the following drawings and description. These and other features, objects, and advantages of the invention will become apparent from a further examination of the following specification and drawings. Attached Figure Description

[0054] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0055] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the various components are shown as examples only and not necessarily to scale. In the accompanying drawings:

[0056] Figure 1 is a perspective view of a child safety seat according to some embodiments of the first aspect;

[0057] Figure 2 is a perspective view of the child safety seat shown in Figure 1 from another angle;

[0058] Figure 3 is a perspective view of the seat assembly in Figure 1;

[0059] Figure 4 is a top view of the seat assembly shown in Figure 3;

[0060] Figure 5 is an exploded perspective view of the seat assembly shown in Figure 3;

[0061] Figure 6 is a magnified view of part A in Figure 5;

[0062] Figure 7 is a perspective view of the upper housing according to some embodiments of the first aspect;

[0063] Figure 8 is a cross-sectional view along line VIII-VIII in Figure 4;

[0064] Figure 9 is a magnified view of part B in Figure 8;

[0065] Figure 10 is a perspective view of the lower housing according to some embodiments of the first aspect;

[0066] Figure 11 is a partial enlarged view of part C in Figure 10;

[0067] Figure 12 is a cross-sectional view along line XII-XII in Figure 4;

[0068] Figure 13 is a partial enlarged view of part D in Figure 12;

[0069] Figure 14 is a partial enlarged view of part E in Figure 10;

[0070] Figure 15 is a cross-sectional view along line XV-XV in Figure 4;

[0071] Figure 16 is a partial enlarged view of part F in Figure 15;

[0072] Figure 17 is a perspective view of a headrest assembly according to some embodiments of the first aspect;

[0073] Figure 18 is a perspective view of a child safety seat according to some embodiments of the second aspect;

[0074] Figure 19 is a perspective view of the child safety seat shown in Figure 18 from another angle;

[0075] Figure 20 is a perspective view of the seat assembly in Figure 18;

[0076] Figure 21 is a top view of the seat assembly shown in Figure 20;

[0077] Figure 22 is an exploded perspective view of the seat assembly shown in Figure 20;

[0078] Figure 23 is a partial enlarged view of part G in Figure 22;

[0079] Figure 24 is a partial enlarged view of part H in Figure 22;

[0080] Figure 25 is a perspective view of the upper housing according to some embodiments of the second aspect;

[0081] Figure 26 is a partial enlarged view of part I in Figure 25;

[0082] Figure 27 is a perspective view of the lower housing according to some embodiments of the second aspect;

[0083] Figure 28 is a partial enlarged view of part J in Figure 27;

[0084] Figure 29 is a cross-sectional view along line XIII-XIII in Figure 21;

[0085] Figure 30 is a partial enlarged view of part K in Figure 29;

[0086] Figure 31 is an exploded view of Figure 29;

[0087] Figure 32 is a partial enlarged view of part L in Figure 22;

[0088] Figure 33 is a perspective view of the upper housing according to some embodiments of the second aspect;

[0089] Figure 34 is a perspective view of the lower housing according to some embodiments of the second aspect;

[0090] Figure 35 is a cross-sectional view along line XVIII-XVIII in Figure 21;

[0091] Figure 36 is a partial enlarged view of part M in Figure 35;

[0092] Figure 37 is a perspective view of a vehicle according to an embodiment of the third aspect of this application;

[0093] Figure 38 is a side view of a vehicle according to an embodiment of the third aspect of this application;

[0094] Figure 39 is a front view of a vehicle according to an embodiment of the third aspect of this application;

[0095] Figure 40 is a perspective view and a partial enlarged view of a vehicle according to an embodiment of the third aspect of this application, showing the reinforcing structure;

[0096] Figure 41 is a cross-sectional view of the vehicle shown in Figure 39 along line AA and a partial enlarged view thereof;

[0097] Figure 42 is a cross-sectional view and a partially enlarged view of a vehicle according to an embodiment of the third aspect of this application, wherein the side wings do not include side wing rolled edges;

[0098] Figure 43 is a perspective view of a carrier according to an embodiment of the third aspect of this application, showing a breathable structure; and

[0099] Figure 44 is a front view of a vehicle according to an embodiment of the third aspect of this application, wherein the headrest is slid to a higher position relative to the seat.

[0100] Reference numerals: C1000, vehicle; C1, headrest; C2, seat; C3, seat; C31, upper surface of seat; C4, side wing; C41, side wing body; C411, wing; C412, connecting part; C413, lower edge; C414, outwardly inclined section; C42, reinforcing structure; C421, reinforcing protrusion; C4212, middle section; C4213, first end of reinforcing protrusion; C4214, second end of reinforcing protrusion; C43, ventilated structure; C431, ventilated groove; C432, ventilated opening; C44, side wing rolled edge; w, width; h, protrusion height; H, longitudinal height. Detailed Implementation

[0101] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0102] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0103] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0104] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0105] Please refer to Figures 1 and 2. According to some embodiments of the first aspect of this application, a child safety seat is provided. A child safety seat is generally installed in the back seat of a car and is specifically designed for children of different weights (or age groups) to effectively improve children's safety while traveling in a vehicle. In the event of a car collision or sudden deceleration, a child safety seat can reduce the impact force on the child and restrict the child's body movement, thereby mitigating injury.

[0106] In this embodiment, the child safety seat includes a seat assembly A100, a backrest assembly A200 detachably disposed on the seat assembly A100, and a headrest assembly A300 movably disposed on the backrest assembly A200. The child safety seat has a high-back mode (see Figures 1 and 2) for use with the backrest assembly A200 and a no-back mode (see Figure 3) for use without the backrest assembly A200. When the child safety seat is in the no-back mode, i.e., when the seat assembly A100 is installed alone on the vehicle seat, it is generally suitable for older children, and the child needs to be restrained on the seat assembly A100 using the seat belt provided on the vehicle seat. When the child safety seat is in the high-back mode, i.e., when the backrest assembly A200 and the seat assembly A100 are connected together and installed on the vehicle seat, it is generally suitable for younger children, and the child can be restrained on the seat assembly A100 using the seat belt (not shown) provided on the child safety seat or the seat belt provided on the vehicle seat. This application describes the child safety seat type provided in this embodiment. Of course, in other embodiments, the technical features of this application can be used in other child safety seats, such as in child safety seats where the backrest assembly A200 and seat assembly A100 are not removable. This application does not limit the application.

[0107] Please refer to Figures 3 to 5. According to some embodiments of this application, the seat assembly A100 includes an upper housing A20 and a lower housing A40. During assembly, the upper housing A20 and the lower housing A40 fit together to form the outer shell of the seat assembly A100.

[0108] Referring to Figure 5, in this embodiment, the lower housing A40 is generally box-shaped. The lower housing A40 includes a bottom wall A42, a front wall A44 located in front of the bottom wall A42, side walls A46 located on both sides of the bottom wall A42, and a rear wall A48 located behind the bottom wall A42. The bottom wall A42, front wall A44, side walls A46, and rear wall A48 together form an accommodating space with an opening.

[0109] Referring to Figures 5 and 7, the upper housing A20 is disposed at the opening of the lower housing A40. In this embodiment, the upper housing A20 is generally cover-shaped. The upper housing A20 includes a support portion and two upper armrest portions A201 respectively connected to both sides of the support portion. The support portion provides a support surface and is used to support the child's buttocks and legs. The upper armrest portions A201 extend upward from the edge of the support portion and then bend forward. The lower housing A40 includes a lower armrest portion A401 corresponding to the upper armrest portion A201. The lower armrest portion A401 is formed by extending upward from a portion of the sidewall A46 of the lower housing A40 and then bending forward. The upper armrest portion A201 and the lower armrest portion A401 cooperate to form the armrest portion of the seat assembly A100 for supporting the child's arms. The armrest portion is generally square. The armrest includes a lower sidewall, a front sidewall, and an outer sidewall located in the lower armrest A401, and an inner sidewall and an upper sidewall located in the upper armrest A201. The upper housing A20 has notches A203 on both sides of the support portion, corresponding to the upper armrest A201. Specifically, the orthographic projection of the upper armrest A201 onto the plane of the support portion is located within the notch A203. The lower housing A40 includes a shielding portion A47 connected to the sidewall A46. The shielding portion A47 is formed by bending inward from the top of the sidewall A46 and is connected to the lower sidewall of the lower armrest A401. When the upper housing A20 and the lower housing A40 are connected, the shielding portion A47 can just cover the notch A203, so that the edge of the shielding portion A47 smoothly transitions with the edge of the support portion, thereby forming a complete area for children to sit in. The structural design of the aforementioned shielding portion A47 and notch A203 not only facilitates the manufacturing of the upper shell A20 and lower shell A40, but also provides a certain degree of guidance for the assembly of the upper shell A20 and lower shell A40. Furthermore, in this embodiment, no unnecessary holes (such as screw holes for fixing or simple demolding holes) are provided on the front wall A44, side wall A46, rear wall A48, shielding portion A47, front and outer side walls of the lower armrest portion A401, and inner and upper side walls of the upper armrest portion A201. Specifically, for the front wall A44 and side wall A46 of the lower shell A40, only the front wall A44 of the lower shell A40 has a hole for the adjustment webbing A43 to pass through, and a receiving hole for the sliding of the storage box is provided at the connection between the front wall A44 and the side wall A46 of the lower shell A40. In other words, apart from the openings for other parts of the seat assembly A100 to extend out, the surfaces in the side wall A46 of the lower housing A40 that come into contact with the occupant or the fabric cover are all complete, hole-free surfaces, thereby improving the overall appearance of the assembled seat assembly A100.

[0110] In order to facilitate the alignment of the upper housing A20 and the lower housing A40 during the assembly process, one of the upper housing A20 and the lower housing A40 is provided with a first positioning member A10, and the other is provided with a second positioning member A30.

[0111] Referring to Figures 5 and 6, in this embodiment, the first positioning member A10 is disposed on the bottom wall A42 of the lower housing A40. The first positioning member A10 includes a first positioning body A12. In this embodiment, the first positioning body A12 is generally cylindrical. A first positioning hole A14 is axially formed inside the first positioning body A12. The first positioning member A10 also includes a plurality of guide portions A16 disposed within the first positioning hole A14. Each guide portion A16 is generally shaped like a blade extending radially from the inner wall of the first positioning hole A14, and the plurality of guide portions A16 are evenly distributed circumferentially along the first positioning hole A14. In this embodiment, the number of guide portions A16 is 4, and an angle of approximately 90° is formed between two adjacent guide portions A16. It can be understood that the number of guide portions A16 can also be 2, 3, 5 or more, as long as the plurality of guide portions A16 are evenly distributed circumferentially along the first positioning hole A14. A portion of the guide portion A16 is located inside the first positioning hole A14, with its top extending outside the first positioning hole A14. The top of the guide portion A16 has a guide ramp A162. The guide ramp A162 slopes inward toward the interior of the first positioning hole A14; in other words, the angle between the guide ramp A162 and the wall of the first positioning hole A14 is an obtuse angle. It is understood that although the four guide portions A16 in the illustrated embodiment are independent, spaced-apart elements, in other embodiments, the opposite edges of the four guide portions A16 may be connected as a single unit, forming a shape similar to the tip of a Phillips screwdriver.

[0112] Referring to Figure 7, in this embodiment, the second positioning member A30 is disposed on the upper housing A20, and the position of the second positioning member A30 corresponds to that of the first positioning member A10. The second positioning member A30 is generally cylindrical in shape, and a second positioning hole A32 is formed inside the second positioning member A30. The diameter of the second positioning member A30 is basically the same as the diameter of the first positioning body A12.

[0113] Referring to Figures 8 and 9, when the upper housing A20 and the lower housing A40 are assembled together, during the process of the upper housing A20 approaching the lower housing A40, due to possible operational errors in the assembly process, the second positioning member A30 may not be perfectly aligned with the first positioning member A10 in the vertical direction. In this case, the guide slope A162, protruding from the first positioning hole A14, will first contact the inner wall of the second positioning hole A32 of the second positioning member A30. At this time, the angle α formed by the guide slope A162 and the inner wall of the second positioning hole A32 is an acute angle. In some embodiments, α can be 30° to 45°. Under the guiding action of the guide slope A162, the second positioning member A30 can be finely adjusted in the horizontal direction, thereby ensuring that the second positioning member A30 is perfectly aligned with the first positioning member A10. As shown in Figure 9, since the diameter of the second positioning member A30 is basically the same as the diameter of the first positioning body A12, the end of the second positioning member A30 can ultimately abut against the top of the first positioning body A12, thereby achieving successful assembly of the upper shell A20 and the lower shell A40. It can be understood that in other embodiments, the diameter of the second positioning member A30 may not be the same as the diameter of the first positioning body A12, the hole wall of the second positioning member A30 may be misaligned with the hole wall of the first positioning body A12, and the end of the hole wall of the second positioning member A30 or the top of the hole wall of the first positioning body A12 may abut against other parts of the first positioning body A12 or the second positioning member A30.

[0114] According to the seat assembly A100 of this embodiment, during the assembly of the upper housing A20 and the lower housing A40, the guide part A16 can guide the second positioning member A30 to accurately align with the first positioning member A10, thereby achieving contact between the second positioning member A30 and the first positioning member A10. This facilitates operation, increases assembly efficiency, reduces positioning difficulty, simplifies processes, and helps accelerate production. Furthermore, after contact, the first positioning member A10 and the second positioning member A30 can also provide some support to the upper housing A20, preventing collapse of the upper housing A20 due to excessive force.

[0115] Although the first positioning member A10 and the second positioning member A30 are cylindrical in this embodiment, it is understood that they can also be other shapes, such as square, elliptical, etc. Furthermore, one or more axial through slots can be formed on the first positioning member A10 and the second positioning member A30; that is, the first positioning member A10 and the second positioning member A30 can also be composed of multiple separate arc-shaped pieces, with the arc-shaped pieces and through slots of the first positioning member A10 and the second positioning member A30 interlocking. Alternatively, the first positioning member A10 and the second positioning member A30 can be arc-shaped pieces, with their ends directly abutting each other. In this embodiment, the first positioning member A10 is located on the lower housing A40, and the second positioning member A30 is located on the upper housing A20. However, it is understood that in other embodiments, the first positioning member A10 can also be located on the upper housing A20, in which case the second positioning member A30 is correspondingly located on the lower housing A40.

[0116] Referring to Figures 1 and 10, the seat assembly A100 also includes a connector A41 and an adjusting webbing A43. The connector A41 is located at the rear of the lower housing A40 and is used for detachable connection to an anchor point on the vehicle to secure the child safety seat to the rear seat. In this embodiment, the connector A41 is a LATCH (Lower Anchors and Tethers for Children) hook. It is understood that in other embodiments, the connector A41 may also be an ISOFIX interface. The adjusting webbing A43 is located inside the lower housing A40 and connected to the connector A41, used to adjust the length of the connector A41 extending out of the lower housing A40.

[0117] In this embodiment, as shown in Figure 10, there are two connectors A41. The adjusting webbing A43 includes an adjusting section A432, two winding sections A434 connected to the adjusting section A432, and a connecting section A436 connected to the end of the winding sections A434. The adjusting section A432 extends from the front wall A44 of the lower housing A40 to facilitate the user to pull it outward by hand. The two connecting sections A436 extend from the rear wall A48 of the lower housing A40 and are respectively connected to the two connectors A41.

[0118] Referring to Figures 5 and 10, in this embodiment, there are four first positioning members A10, and correspondingly, there are also four second positioning members A30. It can be understood that the number of first positioning members 10 and second positioning members 30 can also be one, two, five, or more, respectively. The winding segment A434 of the webbing A43 is adjusted to wrap around the surface of the first positioning member A10, thereby changing the direction of extension.

[0119] The four first positioning elements A10 can be located at any position on the lower housing A40. In this embodiment, the four first positioning elements A10 are divided into two groups, including two first positioning elements A10 near the front of the lower housing A40 and two first positioning elements A10 near the rear of the lower housing A40, and the distance between the two first positioning elements A10 near the front of the lower housing A40 is smaller than the distance between the two first positioning elements A10 near the rear of the lower housing A40. Thus, guided by the two first positioning elements A10 near the rear of the lower housing A40, the two winding segments A434 of the webbing A43 gradually expand outwards at the rear and connect with the two connecting segments A436 to adapt to the position setting of the anchor point on the vehicle. Specifically, the two first positioning elements A10 near the front of the lower housing A40 are symmetrically arranged about the center line of the lower housing A40 in the left-right direction, and similarly, the two first positioning elements A10 near the rear of the lower housing A40 are symmetrically arranged about the center line of the lower housing A40 in the left-right direction. Guided by the two first positioning members A10 near the front of the lower housing A40, the two winding segments A434 of the adjusting webbing A43 gradually converge at the front and connect with the adjusting segment A432. More specifically, the two facing surfaces (or the two adjacent surfaces) of the two first positioning members A10 near the front of the lower housing A40 can be referred to as the inner surfaces, and the two mutually distant surfaces of the two first positioning members A10 near the rear of the lower housing A40 can be referred to as the outer surfaces. The two winding segments A434 of the adjusting webbing A43 can first contact the inner surfaces of the two first positioning members A10 near the front of the lower housing A40, change their extension direction, then contact the outer surfaces of the two first positioning members A10 near the rear of the lower housing A40, change their extension direction again, and finally connect with the connecting segment A436. By setting four first positioning elements A10 at specific positions in the lower housing A40 and making the adjusting webbing A43 bypass the surface of the first positioning elements A10, the movement trajectory of the adjusting webbing A43 can be reasonably planned. This allows the pulling force to be transmitted to the connecting section A436 more reasonably when the user pulls the adjusting section A432 outward, making it more convenient and less strenuous for the adjusting connecting element A41 to extend beyond the lower housing A40.

[0120] It should also be noted that the adjusting webbing A43 rotates during its extension. Specifically, referring to A10, the connecting section A436 of the adjusting webbing A43 is generally horizontal, and the end of the winding section A434 near the connecting section A436 gradually rotates from a generally horizontal position to a generally vertical position, so that the winding section A434 wraps around the surface of the vertically extending first positioning member A10. Meanwhile, the end of the winding section A434 near the adjusting section A432 gradually rotates from a generally vertical position to a generally horizontal position, so that the winding section A434 connects with the generally horizontal adjusting section A432.

[0121] To further improve the alignment between the upper housing A20 and the lower housing A40, one of the upper housing A20 and the lower housing A40 is provided with a third positioning element A50, and the other is provided with a fourth positioning element A60.

[0122] Referring to Figures 10 and 11, in this embodiment, the third positioning member A50 is located on the center line of the lower housing A40 in the left-right direction and is close to the rear wall A48 of the lower housing A40. In the left-right direction, the third positioning member A50 is located between the two first positioning members A10 near the rear of the lower housing A40. In the left-right direction, the distance between the third positioning member A50 and each of the two first positioning members A10 near the rear of the lower housing A40 is equal. In this embodiment, the third positioning member A50 is generally cylindrical. A third positioning hole A52 is provided axially inside the third positioning member A50. Referring to Figure 7, the fourth positioning member A60 is disposed on the upper housing A20 and corresponds to the position of the third positioning member A50. In the left-right direction, the fourth positioning member A60 is located between the two second positioning members A30 near the rear of the upper housing A20. In the left-right direction, the distance between the fourth positioning member A60 and each of the two second positioning members A30 near the rear of the upper housing A20 is equal. In this embodiment, the fourth positioning member A60 is also generally cylindrical, but its outer diameter is slightly smaller than that of the third positioning member A50, and its outer diameter is equal to the diameter of the third positioning hole A52. Therefore, when the upper housing A20 and the lower housing A40 are connected, the fourth positioning member A60 can be inserted into the third positioning hole A52 of the third positioning member A50.

[0123] As shown in Figures 11 to 13, the third positioning member A50 further includes a plurality of positioning portions A54 disposed within the third positioning hole A52. Each positioning portion A54 is approximately shaped like a blade extending radially from the inner wall of the third positioning hole A52, and the plurality of positioning portions A54 are evenly distributed circumferentially along the third positioning hole A52. In this embodiment, the number of positioning portions A54 is four, and adjacent positioning portions A54 form an angle of approximately 90°. It can be understood that the number of positioning portions A54 can also be two, three, five, or more, as long as the plurality of positioning portions A54 are distributed circumferentially along the third positioning hole A52. The length of each positioning portion A54 is less than the depth of the third positioning hole A52. When the fourth positioning member A60 is inserted into the third positioning hole A52, the end of the fourth positioning member A60 is located within the third positioning hole A52, and the end of the fourth positioning member A60 can abut against the top of the positioning portion A54, thereby precisely controlling the insertion depth of the fourth positioning member A60 into the third positioning hole A52.

[0124] In this embodiment, there is one third positioning member A50 and one fourth positioning member A60. However, it is understood that the number of third positioning members A50 and fourth positioning members A60 can also be two, three or more. In addition, in other embodiments, the third positioning member A50 can also be disposed on the upper housing A20, in which case the fourth positioning member A60 is disposed on the lower housing A40.

[0125] To further improve the alignment between the upper housing A20 and the lower housing A40, one of the upper housing A20 and the lower housing A40 is provided with a first fixing member A70, and the other is provided with a second fixing member A80. The first fixing member A70 and the second fixing member A80 are fixedly connected by fasteners (such as screws). Referring to Figures 10 and 14, in this embodiment, the lower housing A40 is provided with the first fixing member A70. The first fixing member A70 includes a fixing body A72 and a positioning groove A74 formed on the top surface of the fixing body A72. Referring to Figure 7, the upper housing A20 is provided with a second fixing member A80, which corresponds to the first fixing member A70. The second fixing member A80 is generally cylindrical. Referring to Figures 15 and 16, the positioning groove A74 is generally inverted trapezoidal in shape, and the opening size of the positioning groove A74 is slightly larger than the diameter of the second fixing member A80, so the end of the second fixing member A80 can be inserted into the positioning groove A74 of the first fixing member A70.

[0126] Specifically, the positioning groove A74 has a bottom wall A742 and a side wall A744 connected to the bottom wall A742. The angle β formed by the side wall A744 and the bottom wall A742 is an obtuse angle. A first through hole A746 for fasteners to pass through is provided on the bottom wall A742, and a second through hole A82 for fasteners to pass through is provided on the second fixing member A80. During the process of the upper housing A20 approaching the lower housing A40, due to possible operational errors in the assembly process, the second through hole A82 may not be perfectly aligned with the first through hole A746 in the vertical direction. In this case, the end of the second fixing member A80 will first contact the side wall A744 of the positioning groove A74. Guided by the inclined side wall A744, the second fastener A80 can be slightly adjusted in the horizontal direction, so that the second through hole A82 of the second fastener A80 is completely aligned with the first through hole A746 of the first fastener A70. This makes it convenient for the fastener to pass through the first through hole A746 and the second through hole A82 in sequence to fix the first fastener A70 and the second fastener A80 together.

[0127] In this embodiment, the lower housing A40 is further provided with a second fixing member A80, and the upper housing A20 is further provided with a first fixing member A70. More specifically, please refer to Figures 7 and 10. In this embodiment, there are ten first fixing members A70, four of which are located in the lower housing A40 and near the rear wall A48 of the lower housing A40. Four are located in the upper housing A20 and near the front of the upper housing A20. The other two first fixing members A70 are respectively located in the two lower armrest portions A401. There are also ten second fixing members A80, four of which are located in the upper housing A20 and near the rear of the upper housing A20. Four are located in the lower housing A40 and near the front wall A44 of the lower housing A40. The other two second fixing members A80 are respectively located in the two upper armrest portions A201. It is understandable that the number of the first fastener A70 and the second fastener A80 can be other numbers, and the positions of the first fastener A70 and the second fastener A80 can also be set in other positions, as long as the first fastener A70 and the second fastener A80 correspond one-to-one.

[0128] In the aforementioned upper housing A20 and lower housing A40, each pair of corresponding first fixing members A70 and second fixing members A80 constitute a fixing assembly, and the seat assembly A100 has multiple fixing assemblies. In this embodiment, the seat assembly A100 has ten fixing assemblies. The fixing assemblies located at the front and rear of the seat assembly A100 are offset from the first positioning member A10 and the second positioning member A30 in the front-rear direction. That is, in the front-rear direction, the first positioning member A10 and the second positioning member A30 are distributed between the fixing assemblies located at the front and rear of the seat assembly A100. This provides greater support to the upper housing A20 in the front-rear direction, preventing the upper housing A20 from collapsing due to excessive force.

[0129] Please refer to Figures 3 and 12. More specifically, the support portion of the upper housing A20 includes a seating portion A202 and an anti-slip portion A204 located in front of the seating portion A202 (the area indicated by the dashed box in Figure 3). The anti-slip portion A204 and the seating portion A202 transition smoothly without a clear boundary. The seating portion A202 is generally flat and supports the occupant's buttocks. The anti-slip portion A204 is generally an upwardly convex arc surface that supports the occupant's thighs. The anti-slip portion A204 extends from the left side to the right side of the upper housing A20 in a left-right direction. The height of the anti-slip portion A204 is greater than the height of the seating portion A202 to prevent the occupant from sliding forward while seated. In this embodiment, the height difference H between the anti-slip portion A204 and the seating portion A202 can be in the range of 15mm to 40mm. In this embodiment, the fixing component located at the front of the seat assembly A100 corresponds to the position of the anti-slip portion A204. In this embodiment, two upper armrests A201 are respectively connected to the two sides of the seating portion A202, and the upper shell A20 has a notch A203 on each side of the seating portion A202 corresponding to the upper armrest A201; in other embodiments, the notch A203 may also extend from the seating portion A202 to the anti-slip portion A204, which is not limited here.

[0130] Please refer to Figures 2 and 17. The headrest assembly A300 includes a headrest body A302, an adjusting rod A304, and an operating member A306. The headrest body A302 is slidably connected to the backrest assembly A200. The adjusting rod A304 is slidably connected to the headrest body A302, and its lower end can be selectively engaged with multiple engaging portions of the backrest assembly A200. The operating member A306 is pivotally connected to the top of the adjusting rod A304. When the user operates the operating member A306, the operating member A306 can rotate and disengage the lower end of the adjusting rod A304 from the engaging portions of the backrest assembly A200, releasing the headrest body A302. This allows the headrest body A302 to slide up or down relative to the backrest assembly A200, thereby easily adjusting the height of the headrest assembly A300 relative to the backrest assembly A200 to accommodate children of different sizes.

[0131] Please refer to Figures 18 and 19. According to some embodiments of the second aspect of this application, a child safety seat is provided. A child safety seat is generally installed in the back seat of a car and is specifically designed for children of different weights (or age groups) to effectively improve children's safety while traveling in a vehicle. In the event of a car collision or sudden deceleration, a child safety seat can reduce the impact force on the child and restrict the child's body movement, thereby mitigating injury. In this embodiment, the child safety seat includes a seat assembly B100, a backrest assembly B200 detachably disposed on the seat assembly B100, and a headrest assembly B300 movably disposed on the backrest assembly B200. It is understood that in other embodiments, the child safety seat may only include the seat assembly B100, omitting the backrest assembly B200 and headrest assembly B300. In this case, the child safety seat is a booster seat, suitable for children weighing 9kg-36kg, which ensures that the child can correctly and compliantly wear the seat belt while traveling in a vehicle, improving the child's safety while traveling in a vehicle.

[0132] Please refer to Figures 20 to 22. According to some embodiments of this application, the seat assembly B100 includes an upper housing B20 and a lower housing B40. During assembly, the upper housing B20 and the lower housing B40 fit together to form the outer shell of the seat assembly B100.

[0133] Referring to Figure 22, in this embodiment, the lower housing B40 is generally box-shaped. The lower housing B40 includes a bottom wall B42, a front wall B44 located in front of the bottom wall B42, side walls B46 located on both sides of the bottom wall B42, and a rear wall B48 located behind the bottom wall B42. The bottom wall B42, front wall B44, side walls B46, and rear wall B48 together form an accommodating space with an opening.

[0134] Referring to Figures 22 and 25, the upper housing B20 is disposed at the opening of the lower housing B40. In this embodiment, the upper housing B20 is generally cover-shaped. The upper housing B20 includes a seating portion B202 and two upper armrest portions B201 respectively connected to both sides of the seating portion B202. The seating portion B202 is used to support the child's buttocks. The upper armrest portions B201 are formed by extending upward from the edge of the seating portion B202 and then bending forward.

[0135] The lower housing B40 includes a lower armrest portion B401 corresponding to the upper armrest portion B201. The lower armrest portion B401 is formed by extending upward and then bending forward from a portion of the side wall B46 of the lower housing B40; in other words, the lower armrest portion B401 and the side wall B46 are integrally formed. The upper armrest portion B201 is used to support the child's arm, and the lower armrest portion B401 is used to support the upper armrest portion B201 and can abut against the vehicle's seat belt. The upper armrest portion B201 and the lower armrest portion B401 together constitute the armrest portion of the seat assembly B100.

[0136] The seat assembly B100 of this embodiment includes two armrests, left and right. Since the two armrests are symmetrical, the following description will only use the armrest shown in Figure 22, which supports a child's right hand, as an example. In this embodiment, the armrests are generally square, including an inner wall B4011, a front wall B4012, and a right wall B4013 located in the lower armrest B401, and a left wall B2014 and an upper wall B2015 located in the upper armrest B201. The inner wall B4011 extends rearward from the lower end of the front wall B4012 along an arc until it connects approximately perpendicularly to the top of the side wall B46, thus forming an approximately J-shaped receiving groove. The vehicle's seatbelt primarily abuts against the inner wall B4011 of the lower armrest B401. The rear end of the right wall B4013 extends downward and connects to the side wall B46. When the upper housing B20 and the lower housing B40 are connected, the upper side wall B2015 is connected to the right side wall B4013, and the left side wall B2014 is connected to the front side wall B4012 and the inner side wall B4011, respectively. In this embodiment, the seam between the upper armrest B201 and the lower armrest B401 is located at the joint between the side walls, rather than inside the side walls. For example, the seam between the upper armrest B201 and the lower armrest B401 is located between the upper side wall B2015 of the upper armrest B201 and the front side wall B4012 of the lower armrest B401, between the left side wall B2014 of the upper armrest B201 and the inner side wall B4011 of the lower armrest B401, and between the front side wall B4012 and the left side wall B2014, thereby improving the integrity and aesthetics of the seat assembly B100.

[0137] In this embodiment, as shown in Figures 22 and 25, the upper shell B20 has a roughly U-shaped notch B203 on each side of the seating portion B202. The orthographic projection of the upper armrest portion B201 onto the plane of the seating portion B202 is located within the notch B203. The lower shell B40 may further include a shielding portion B47 connected to the side wall B46. The shielding portion B47 is formed by bending inward from the top of the side wall B46 and is connected to the inner side wall B4011 of the lower armrest portion B401. When the upper shell B20 and the lower shell B40 are connected, the shielding portion B47 can just cover the notch B203, so that the edge of the shielding portion B47 smoothly transitions with the edge of the seating portion B202, thereby forming a complete area for children to sit in. The structural design of the aforementioned shielding part B47 and notch B203 not only facilitates the manufacturing of the upper shell B20 and the lower shell B40, but also provides a certain degree of guidance for the assembly of the upper shell B20 and the lower shell B40.

[0138] When a child safety seat is used in conjunction with the vehicle's seatbelt, the seatbelt sits within the receiving groove formed by the inner wall B4011 and comes into contact with the inner wall B4011 of the lower armrest. During emergency braking, the seatbelt exerts significant pressure on the inner wall B4011 of the lower armrest. Therefore, additional structural reinforcement is required in this area.

[0139] Please refer to Figures 22 to 24. In this embodiment, the upper shell B20 is provided with a first reinforcing rib B2012, and the lower shell B40 is provided with a second reinforcing rib B4012 that cooperates with the first reinforcing rib B2012.

[0140] Referring to Figures 23, 25, and 26, the first reinforcing rib B2012 is generally square in shape and extends vertically. The upper end of the first reinforcing rib B2012 is connected to the upper side wall B2015 of the upper armrest portion B201, and one side of the first reinforcing rib B2012 is connected to the left side wall B2014 of the upper armrest portion B201. The upper housing B20 includes a partition portion B2032 that surrounds the edge of the notch B203 and extends downwards. The lower end of the first reinforcing rib B2012 is connected to the partition portion B2032. In this embodiment, the first reinforcing rib B2012 and the partition portion B2032 are substantially perpendicular. As shown in Figure 26, the lower end of the first reinforcing rib B2012 extends further laterally and is connected to the second positioning member B30 on the upper housing B20. The front end face of the first reinforcing rib B2012 is roughly a smooth plane, and the rear end face is connected to a fourth reinforcing rib B2016 extending in the front-rear direction (as shown in Figure 25) to enhance the strength of the first reinforcing rib B2012 in the front-rear direction.

[0141] Please refer to Figures 24, 27, and 28. The second reinforcing rib B4012 is approximately square in shape, extending upwards from the bottom wall B42 of the lower housing B40 until it connects with the inner sidewall B4011. In other words, the bottom of the second reinforcing rib B4012 is connected to the bottom wall B42 of the lower housing B40, one side of the second reinforcing rib B4012 is connected to the sidewall B46 of the lower housing B40, and the top of the second reinforcing rib B4012 is connected to the inner sidewall B4011, abutting against the inner sidewall B4011 from the rear, thereby enhancing the structural strength of the inner sidewall B4011. It should be noted that, in this embodiment, please also refer to Figure 35, the sidewall B46 of the lower housing B40 is not perpendicular to the bottom wall B42 of the lower housing B40, but rather the sidewall B46 is slightly inclined outwards relative to the bottom wall B42. As shown in Figures 24 and 28, a stepped structure B4012a is provided on the side of the second reinforcing rib B4012 away from the side wall B46, which can reduce the lateral width of the upper part of the second reinforcing rib B4012 without reducing the stress strength.

[0142] Please refer to Figures 29 to 31. When the upper shell B20 and the lower shell B40 are connected, the front side of the first reinforcing rib B2012 and the rear side of the second reinforcing rib B4012 are in contact with each other. In this embodiment, the lengths of both the first reinforcing rib B2012 and the second reinforcing rib B4012 are less than the distance between the bottom wall B42 of the lower shell B40 and the upper side wall B2015 of the upper shell B20, to avoid watermarks during demolding due to excessive rib length. Therefore, the two reinforcing ribs only partially overlap in the height direction. Furthermore, the surface-to-surface contact prevents relative sliding between the first reinforcing rib B2012 and the second reinforcing rib B4012, facilitating positioning during installation. It is understood that in other embodiments, the rear side of the first reinforcing rib B2012 and the front side of the second reinforcing rib B4012 may also be in contact with each other.

[0143] As described in the background section, the common practice in the art is to use a separate armrest assembly or to provide a thicker armrest reinforcement rib in the lower housing B40 to support the armrest and meet the preset pressure resistance performance. However, the connection between the armrest reinforcement rib and the contact surface (i.e., the sides and bottom of the lower housing B40) can lead to stress concentration due to sudden changes in thickness. This stress concentration is particularly noticeable during injection molding cooling because different thickness areas cool at different rates. When light shines at a specific angle, the stress concentration area produces a visual defect or shadow on the surface of the product, commonly known as "watermarks," thus affecting the aesthetics of the finished product. Similarly, if a long armrest reinforcement rib is provided in the lower housing B40 (for example, extending from the bottom wall B42 of the lower housing B40 to the upper side wall of the upper housing B20), watermarks may also appear between the armrest reinforcement rib and the contact surface. In addition, the complex reinforcement rib design can also lead to difficulties in demolding and assembly of the housing.

[0144] According to the embodiment of this application, the seat assembly B100 has a first reinforcing rib B2012 and a second reinforcing rib B4012 respectively provided on the upper armrest portion B201 of the upper housing B20 and the lower armrest portion B401 of the lower housing B40. The first reinforcing rib B2012 abuts against the second reinforcing rib B4012 from the rear. This maintains the overall strength of the reinforcing ribs while allowing the thickness and length of individual reinforcing ribs to be set thinner and shorter, thereby avoiding the formation of "watermark" defects at the connection between the reinforcing ribs and the contact surfaces (i.e., the sides and bottom surfaces of the lower housing B40). In addition, by providing a stepped structure B4012a on the second reinforcing rib B4012, the lateral width of the second reinforcing rib 4012 can be reduced, further reducing the occurrence rate of "watermark" defects.

[0145] As shown in Figures 22 and 32, to increase the structural strength of the shielding portion B47, a third reinforcing rib B4014 is also provided on the lower armrest portion B401. The third reinforcing rib B4014 is located in front of the second reinforcing rib B4012 and is parallel to it. The shape of the third reinforcing rib B4014 is similar to that of the second reinforcing rib B4012; it extends upwards from the bottom wall B42 of the lower shell B40 until it connects with the shielding portion B47. In other words, the bottom of the third reinforcing rib B4014 is connected to the bottom wall B42 of the lower shell B40, one side of the third reinforcing rib B4014 is connected to the side wall B46 of the lower shell B40, and the top of the third reinforcing rib B4014 is connected to the shielding portion B47, thereby enhancing the structural strength of the third reinforcing rib B4014. Similar to the second reinforcing rib B4012, the third reinforcing rib B4014 has a stepped structure B4014a on the side away from the sidewall B46, thereby reducing the lateral width of the third reinforcing rib B4014 without reducing its load-bearing strength. Furthermore, the longitudinal edge of the stepped structure B4014a extends vertically, facilitating the positioning notch B203. The difference from the second reinforcing rib B4012 is that the top of the third reinforcing rib B4014, where it connects to the shielding portion B47, has a positioning groove B4015. In this embodiment, multiple third reinforcing ribs B4014 are arranged at intervals along the extending direction of the shielding portion B47, and the distance between two adjacent third reinforcing ribs B4014 and the distance between a third reinforcing rib B4014 and a second reinforcing rib B4012 are equal.

[0146] Please refer again to Figures 25 and 26. The upper housing B20 is provided with an elongated positioning hook B2022. The positioning hook B2022 is formed by bending downward from the edge of the seating part B202 of the upper housing B20 near the notch B203.

[0147] Please refer to Figures 35 and 36. When the upper housing B20 and the lower housing B40 are connected, the positioning hook B2022 on the upper housing B20 can be engaged within the positioning groove B4015 of the lower housing B40. Additionally, the bottom of the partition portion B2032 on the upper housing B20 abuts against the stepped structure B4014a of the multiple third reinforcing ribs B4014. By configuring the engagement between the partition portion B2032 and the stepped structure B4014a of the upper housing B20, and the engagement between the positioning hook B2022 and the positioning groove B4015, deformation of the lower housing B40 in the lateral direction can be prevented, while also facilitating positioning during assembly of the upper and lower housings B20.

[0148] Referring to Figures 25, 26, and 33, the upper shell B20 also includes a fourth reinforcing rib B2016. The fourth reinforcing rib B2016 is generally a square piece that extends in a direction parallel to the extending direction of the upper armrest portion B201. The top of the fourth reinforcing rib B2016 is connected to the upper sidewall B2015 of the upper armrest portion B201, and the front part of the fourth reinforcing rib B2016 is connected to the first reinforcing rib B2012. In this embodiment, the fourth reinforcing rib B2016 is substantially perpendicular to the first reinforcing rib B2012. As an auxiliary reinforcing rib, the fourth reinforcing rib B2016 can provide support to the first reinforcing rib B2012 from the rear, thereby further improving the structural strength of the first reinforcing rib B2012 and preventing it from deforming under excessive force in the front-rear direction.

[0149] Referring to Figures 25 and 33, the upper shell B20 also includes a fifth reinforcing rib B2018. The fifth reinforcing rib B2018 is generally a square piece. The top of the fifth reinforcing rib B2018 is connected to the upper side wall B2015 of the upper armrest portion B201, and the side of the fifth reinforcing rib B2018 is connected to the left side wall B2014 of the upper armrest portion B201. The fifth reinforcing rib B2018 is arranged substantially parallel to the first reinforcing rib B2012. When the upper shell B20 and the lower shell B40 are connected, the lower end of the fifth reinforcing rib B2018 abuts against the inner side wall B4011 of the lower armrest portion B401, and the right side of the fifth reinforcing rib B2018 abuts against the right side wall B4013 of the lower armrest portion B401. In this embodiment, multiple fifth reinforcing ribs B2018 are arranged at intervals along the extending direction of the upper armrest portion B201, and the distance between two adjacent fifth reinforcing ribs B2018 is equal to the distance between the fifth reinforcing rib B2018 and the second reinforcing rib B4012. By providing the fifth reinforcing ribs B2018, the structural strength of the upper armrest portion B201 can be enhanced, preventing deformation of the armrest portion, and it is also beneficial for positioning during the assembly of the upper shell B20 and the lower shell B40.

[0150] Please refer to Figures 18, 33, and 34. The seat assembly B100 also includes a storage box B402. The storage box B402 is slidably disposed within the lower housing B40 and has two usage states: open and closed.

[0151] As shown in Figure 22, in this embodiment, a receiving hole B442 is provided at the connection between the front wall B44 and the side wall B46 of the lower housing B40. The storage box B402 is slidably received within the receiving hole B442.

[0152] As shown in Figure 33, a first guide rail B2024 is provided on the back of the seating portion B202 of the upper housing B20. As shown in Figure 34, a second guide rail B4224 is provided on the bottom wall B42 of the lower housing B40. The storage box B402 can slide along the first guide rail B2024 and the second guide rail B4224, thereby switching between an open state with the receiving hole B442 pulled out and a closed state with it pushed back into the lower housing B40. When the storage box B402 is pulled out of the receiving hole B442, the storage box B402 can hold items such as water cups; when there is no need to place water cups, the storage box B402 can be pushed back into the lower housing B40, thereby adding a new function to the seat assembly B100.

[0153] As shown in Figure 33, the first guide rail B2024 also has a locking groove B2026 inside. As shown in Figure 34, the storage box B402 also has a slider B4022 on one side. The slider B4022 can slide within the locking groove B2026, and the locking groove B2026 can limit the sliding stroke of the slider B4022, thereby ensuring that the storage box B402 will not be easily pulled out of the receiving hole B442 and affect its use.

[0154] Referring to Figures 18 and 34, the seat assembly B100 also includes a connector B41 and an adjusting webbing B43. The connector B41 is located at the rear of the lower housing B40 and is used for detachable connection to an anchor point on the vehicle to secure the child safety seat to the rear seat. In this embodiment, the connector B41 is a LATCH (Lower Anchors and Tethers for Children) hook. It is understood that in other embodiments, the connector B41 may also be an ISOFIX interface. The adjusting webbing B43 is located inside the lower housing B40 and connected to the connector B41, used to adjust the length of the connector B41 extending out of the lower housing B40.

[0155] Specifically, there are two connectors B41. The adjusting webbing B43 includes an adjusting section B432, two winding sections B434 connected to the adjusting section B432, and a connecting section B436 located at the end of the winding sections B434. The adjusting section B432 extends from the front wall B44 of the lower housing B40 to facilitate manual pulling by the user. The two connecting sections B436 extend from the rear wall B48 of the lower housing B40 and are connected to the two connectors B41 respectively.

[0156] A third aspect of the present invention provides a vehicle C1000, comprising a backrest C2, a seat C3, and side wings C4. The backrest C2 is connected to the seat C3, and the side wings C4 are connected to both sides of the backrest C2. The side wings C4 include a side wing body C41 and a reinforcing structure C42, the reinforcing structure C42 being formed by protruding outward from the side wing body C41. The present invention enhances shock absorption through the reinforcing structure C42, thereby providing better protection for the occupant.

[0157] Referring to Figures 37 and 2, a perspective view of a vehicle C1000 provided according to an embodiment of a third aspect of the present invention is shown. The vehicle C1000 can be a child safety seat, infant carrier, etc. For example, the vehicle C1000 can be a rear-facing child safety seat suitable for children aged one to four years, or a forward-facing child safety seat suitable for older children (e.g., four to twelve years). The vehicle C1000 can be secured to a car seat by means of, for example, ISOFIX connectors, a pull strap, or other structures, or by means of a car seatbelt. The vehicle C1000 includes a backrest C2, a seat C3, and two side wings C4. The side wings C4 will be described concurrently with the description of the vehicle C1000 below.

[0158] Referring to Figures 37, 38, and 44, the headrest C1 is connected to the backrest C2, which is connected to the seat C3. Two side wings C4 are connected to both sides of the backrest C2. Specifically, the backrest C2 is pivotally connected to the seat C3, thereby allowing adjustment of the tilt angle of the backrest C2 relative to the seat C3, and / or the backrest C2 is detachably connected to the seat C3. Each side wing C4 may be integrally formed with the backrest C2 or detachably connected. In one embodiment, the headrest C1 is slidably connected to the backrest C2, thereby allowing adjustment of the height of the headrest C1 relative to the seat C3 to accommodate children of different heights.

[0159] Referring to Figures 39 and 40, which illustrate the side wing C4 of the present invention, the following description uses one of the side wings C4 of the vehicle C1000 as an example. The side wing C4 includes a side wing body C41 and a reinforcing structure C42, which is formed by the side wing body C41 protruding outwards. The side wing C4 can be made of plastic, but other materials can also be used as needed. The backrest C2, the seat C3, and the side wing C4 together define the seating space of the vehicle C1000, and the child is confined within the seating space by a seat belt (not shown) or a car seat belt. The side of the side wing body C41 facing the seating space is referred to as the inner side, and the side of the side wing body C41 facing away from the seating space is referred to as the outer side. As shown in Figure 40, the side wing body C41 includes a wing portion C411 and a connecting portion C412 connected to the wing portion C411, and viewed from a cross-section perpendicular to both the wing portion C411 and the connecting portion C412, the side wing body C41 is approximately L-shaped. The wing C411 can be connected to the connecting portion C412 in a direction generally perpendicular to the connecting portion C412, and the specific angle is not limited here. For example, the wing C411 can also be connected to the connecting portion C412 at an angle greater than 90 degrees, that is, the wing C411 extends outward at an angle relative to the plane perpendicular to the connecting portion C412. The wing C411 can be integrally formed with the connecting portion C412 or connected to it in other ways. The side wing C4 can also be other than L-shaped, such as being generally flat, as long as it is convenient to connect to the backrest C2 and provide lateral support for the occupant. The reinforcing structure C42 can be a convex-concave reinforcing structure that protrudes from the inside to the outside of the side wing body C41. In one embodiment, the side wing body C41 can be integrally formed with the reinforcing structure C42, for example, by injection molding, stamping, forging, additive manufacturing, etc. The reinforcing structure C42 of the present invention has a simple structure, is easy to manufacture and process, and can improve the impact resistance of the side wings C4 and improve the lateral buffer performance.

[0160] Referring to Figures 40 and 41, the reinforcing structure C42 may include at least two reinforcing protrusions C421, each protruding outward from the side wing body C41 and spaced vertically along the length direction (i.e., the longitudinal direction of the side wing body C41). The side wing body C41 may have multiple reinforcing protrusions C421, such as two, three, four, or more, thereby increasing the area of ​​the reinforcing structure C42, improving the impact resistance of the side wing C4, and effectively absorbing impact force. The reinforcing protrusions C421 may extend from the first end of the side wing body C41 to the second end of the side wing body C41 in the width direction (i.e., the lateral direction of the side wing body C41). Along the lateral direction (width direction) of the side wing body C41, the first end of the side wing body C41 may be the end not connected to the backing portion C2, and the second end of the side wing body C41 may be the end connected to the backing portion C2. As shown in Figure 40, the reinforcing protrusion C421 extends from one end of the wing portion C411 in the width direction of the side wing body C41 to the point where the wing portion C411 connects with the connecting portion C412. The reinforcing protrusion C421 can also extend from the first end of the side wing body C41 to the second end, for example, to the side where the connecting portion C412 connects with the backing portion C2. Multiple reinforcing protrusions C421 can extend approximately parallel to each other. Although the reinforcing protrusion C421 shown in the figure is elongated, it can also be other shapes, such as a semi-circle, an ellipse, etc., protruding outwards from the side wing body C41. Furthermore, as shown, the reinforcing protrusion C421 extends linearly from the first end to the second end of the side wing body C41; however, it can also extend in a curved manner from the first end to the second end of the side wing body C41.

[0161] See Figures 41 and 43. The reinforcing protrusion C421 may have a certain width w to ensure that the reinforcing structure C42 has sufficient strength. For example, the width w of the reinforcing protrusion C421 may be approximately 20 mm to approximately 35 mm, such as approximately 22 mm to approximately 33 mm, or approximately 24 mm to approximately 31 mm. In one embodiment, the width w of the reinforcing protrusion C421 may be approximately 28 mm. The width w of multiple reinforcing protrusions C421 may be the same or different. Although the width w of the reinforcing protrusion C421 has been given above, the present invention is not limited thereto. The reinforcing protrusion C421 may also have other widths, and the width w of the same reinforcing protrusion C421 may also vary, as long as it can enhance the shock absorption effect of the side wing C4 and improve the side impact performance.

[0162] See Figures 38, 42, and 43. A reinforcing protrusion C421 protrudes outward from the side wing body C41 by a certain protrusion height h. The protrusion height h of the reinforcing protrusion C421 relative to the side wing body C41 is approximately 6 mm to approximately 15 mm, for example, approximately 7 mm to 13 mm, or for example, approximately 8 mm to approximately 11 mm. Although the protrusion height h of the reinforcing protrusion C421 is given above, the invention is not limited thereto, and the reinforcing protrusion C421 may have other protrusion heights h. The protrusion height h of multiple reinforcing protrusions C421 may be the same or different. Furthermore, the protrusion height h of the same reinforcing protrusion C421 at different locations may be the same or different. In one embodiment, the connecting portion C412 of the side wing body C41 is connected to the backing portion C2, and the wing portion C411 of the side wing body C41 is connected to the connecting portion C412 at an angle greater than 90 degrees, that is, the wing portion C411 extends outward at an angle relative to a direction perpendicular to the connecting portion C412. The reinforcing convex C421 is formed by protruding outward from the wing portion C411, and the protrusion height h of the reinforcing convex C421 can gradually change along the lateral direction of the reinforcing convex C421 (that is, the width direction of the side wing body C41) from the first end C4213 to the second end C4214 of the reinforcing convex C421. Alternatively, in one embodiment, the side wing body C41 can be generally flat, the reinforcing convex C421 extends along the width direction of the side wing body C41 and spans the entire side wing body C41, and the protrusion height h of the reinforcing convex C421 can gradually change along the lateral direction of the reinforcing convex C421 from the first end C4213 to the second end C4214 of the reinforcing convex C421. For example, the protrusion height h of the reinforcing protrusion C421 is set along the transverse direction of the reinforcing protrusion C421 from the first end C4213 to the second end C4214, with both ends lower and the middle higher. This arrangement of the reinforcing protrusion C421 can be coordinated with the inclined arrangement of the side wing C4, while ensuring the uniform wall thickness of the side wing C4, so as to facilitate the processing and forming of the side wing C4. In one embodiment, the protrusion height h of the intermediate segment C4212 (at the middle in the transverse direction of the reinforcing protrusion C421) between the first end C4213 and the second end C4214 of the reinforcing protrusion C421 is approximately 8 mm relative to the side wing body C41. The intermediate segment C4212 may also have other protrusion heights, which are not limited here.

[0163] See Figures 40 and 43. The reinforcing structure C42 is positioned at a distance from the lower edge C413 of the side wing body C41, thereby providing better lateral protection for the occupant. The lower edge C413 of the side wing body C41 is the edge of the side wing body C41 that is closest to the seat portion C3 in the longitudinal direction when the side wing C4 is mounted on the vehicle C1000. In one embodiment, the longitudinal height H of the reinforcing structure C42 relative to the lower edge C413 of the side wing body C41 can be set such that when the occupant sits on the seat portion C3, the horizontal position of the reinforcing structure C42 corresponds to the occupant's shoulder. In one embodiment, the longitudinal height H of the reinforcing structure C42 relative to the upper surface C31 of the seat portion C3 is greater than or equal to approximately 280 mm. In another embodiment, the longitudinal height H of the reinforcing structure C42 relative to the upper surface C31 of the seat portion C3 is approximately 323 mm. In one embodiment, the longitudinal height H of the reinforcing structure C42 relative to the lower edge C413 of the side wing body C41 is greater than or equal to approximately 280 mm. The reinforcing structure C42 may also have other heights relative to the lower edge C413 of the side wing body C41.

[0164] See Figures 40, 41, and 43. The side wing C4 also includes a ventilated structure C43, which is formed on the side wing body C41 and configured to enhance air permeability between the outer and inner sides of the side wing body C41. The ventilated structure C43 may include a ventilated groove C431, which may be a recess formed at a corresponding position on the side wing body C41 by a reinforcing protrusion C421. The formation of the ventilated groove C431 on the side wing body C41 allows air to circulate between the seating space and the outside of the seating space even when the occupant is leaning against the backrest C2 or the side wing C4, thereby improving the occupant's comfort. In one embodiment, the headrest C1 is slidably connected to the backrest C2, and when the headrest C1 slides to its lowest position relative to the seat C3, the height of the headrest C1 relative to the seat C3 is greater than the height of the ventilated groove C431 relative to the seat C3, thus preventing the ventilated groove C431 from being blocked by the headrest C1. In one embodiment, the side wing body C41 may further include an outwardly inclined segment C414 formed by the side wing body C41 from the inside to the outside. This outwardly inclined segment C414 is connected to the reinforcing structure C42, for example, integrally formed, and is located above the reinforcing structure C42. The side wing body C41 is provided with this outwardly inclined segment C414 to facilitate the sliding of the headrest C1 on the backrest C2 without obstruction by the side wing body C41. The ventilated structure C43 may further include a plurality of ventilated openings C432 formed on the side wing body C41 and the reinforcing structure C42. Ventilation openings C432 can be evenly distributed on the side wing body C41 and the reinforcing structure C42. In one embodiment, the ventilation openings C432 can be formed within the ventilation grooves C431, thereby further enhancing the air permeability between the outer and inner sides of the side wing body C41. The ventilation openings C432 can be of various shapes, such as strip holes, square holes, triangular holes, circular holes, etc. In one embodiment, the ventilation opening C432 can be a circular hole.

[0165] Side wings C4 are typically installed on the backrest C2 for passenger seating. To improve passenger comfort and the aesthetics of the vehicle C1000, the vehicle C1000 usually includes coverings, such as covering the headrest C1, backrest C2, seat C3, and side wings C4. The coverings can be flexible materials, such as cloth or leather.

[0166] See Figures 38, 40, and 42. The side wing C4 includes a side wing rolled edge C44. The side opposite to the side where the side wing body C41 connects to the backrest C2 is the first side. The side wing rolled edge C44 is formed by rolling the circumferential edge of the first side from the inside to the outside. As shown in Figure 40, the side wing rolled edge C44 extends from the circumferential edge of the first side along the protrusion direction of the reinforcing structure C42 for a distance greater than or equal to the protrusion height h of the reinforcing structure 42, and then rolls outward to form the side wing rolled edge C44. The side wing rolled edge C44 can prevent the reinforcing structure C42 from being damaged by compression, for example, during transportation. In addition, when the side wing C4 is covered with a covering, the side wing rolled edge C44 can prevent the edge of the side wing C4 from scratching the covering and create a gap between the covering and the side wing body C41, thereby improving the air permeability of the vehicle C1000.

[0167] Another aspect of the present invention provides a side wing C4 for a vehicle C1000, the side wing C4 of which is as described above.

[0168] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0169] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A seat assembly for a child safety seat, characterized in that, include: Upper shell; and The lower housing is connected to the upper housing. One of the upper housing and the lower housing is provided with a first positioning member, and the other is provided with a second positioning member. The first positioning member includes a first positioning body and a guide part provided on the first positioning body. The second positioning member abuts against the first positioning member under the guidance of the guide part.

2. The seat assembly of the child safety seat according to claim 1, characterized in that, The first positioning body has a first positioning hole, and the second positioning member has a second positioning hole. The guide part is located inside the first positioning hole and has a guide slope protruding from the first positioning hole. When the upper housing and the lower housing are connected, the guide slope is used to contact the inner wall of the second positioning hole to guide the second positioning member to align with the first positioning member.

3. The seat assembly of the child safety seat according to claim 2, characterized in that, The plurality of guide portions are spaced apart inside the first positioning hole, and the angle formed by each guide slope and the inner wall of the second positioning hole is an acute angle.

4. The seat assembly of the child safety seat according to claim 1, characterized in that, One of the upper housing and the lower housing is provided with a third positioning member, and the other is provided with a fourth positioning member. The third positioning member has a third positioning hole, and the fourth positioning member is inserted into the third positioning hole.

5. The seat assembly of the child safety seat according to claim 4, characterized in that, The third positioning element includes a positioning part disposed in the third positioning hole, and the fourth positioning element abuts against the positioning part.

6. The seat assembly of the child safety seat according to claim 1, characterized in that, One of the upper housing and the lower housing is provided with a first fixing member, and the other is provided with a second fixing member. The first fixing member and the second fixing member are fixedly connected by fasteners. The first fixing member is provided with a positioning groove, and the end of the second fixing member is inserted into the positioning groove.

7. The seat assembly of the child safety seat according to claim 6, characterized in that, The positioning groove has a bottom wall and a side wall connected to the bottom wall, and the angle formed by the side wall and the bottom wall is an obtuse angle.

8. The seat assembly of the child safety seat according to claim 1, characterized in that, The upper housing includes a seating section and an anti-slip section disposed on the front side of the seating section. The height of the anti-slip section is greater than the height of the seating section, and the anti-slip section extends from the left side to the right side of the upper housing in a left-right direction.

9. The seat assembly of the child safety seat according to claim 1, characterized in that, The upper housing includes a support portion and two upper armrest portions connected to the support portion. The upper housing has notches on both sides of the support portion corresponding to the upper armrest portions. The lower housing includes a lower armrest portion corresponding to the upper armrest portions and a shielding portion corresponding to the notches.

10. A seat assembly for a child safety seat, characterized in that, include: The upper housing includes an upper armrest for supporting a child's arm, and the upper housing further includes a first reinforcing rib connected to the upper armrest; and The lower housing, which mates with the upper housing, includes a lower armrest portion for abutting against a vehicle seatbelt. The lower housing also includes a second reinforcing rib connected to the lower armrest portion, the rear side of which abuts against the front side of the first reinforcing rib. The side wall of the lower housing and the lower armrest are integral parts.

11. The seat assembly of the child safety seat according to claim 10, characterized in that, The upper armrest includes a left side wall and an upper side wall that are connected to each other, and the first reinforcing rib is connected to the upper side wall and the left side wall respectively.

12. The seat assembly of the child safety seat according to claim 11, characterized in that, The upper housing includes a seating portion, and each side of the seating portion has a notch. The upper housing also includes a partition portion surrounding the notch, and the first reinforcing rib is connected to the partition portion.

13. The seat assembly of the child safety seat according to claim 12, characterized in that, The lower housing includes a bottom wall and side walls located on both sides of the bottom wall. The lower armrest includes an inner side wall connected to the side wall. The inner side wall is used to abut the seat belt. The second reinforcing rib is connected to the bottom wall and the side wall, and the top of the second reinforcing rib is connected to the inner side wall.

14. The seat assembly of the child safety seat according to claim 13, characterized in that, The lower armrest includes a front sidewall and a right sidewall that are connected to each other. The inner sidewall connects the front sidewall and the sidewall. When the upper housing and the lower housing are connected, the upper sidewall is connected to the right sidewall, and the left sidewall is connected to both the front sidewall and the inner sidewall.

15. The seat assembly of the child safety seat according to claim 13, characterized in that, The second reinforcing rib has a stepped structure on the side away from the sidewall.

16. The seat assembly of the child safety seat according to claim 13, characterized in that, The lengths of both the first reinforcing rib and the second reinforcing rib are less than the distance between the upper sidewall of the upper armrest and the bottom wall of the lower housing.

17. The seat assembly of the child safety seat according to claim 12, characterized in that, The lower housing includes a shielding portion corresponding to the notch, and the lower armrest portion includes a third reinforcing rib parallel to the second reinforcing rib. The top of the third reinforcing rib is connected to the shielding portion, and a positioning groove is provided at the part of the third reinforcing rib connected to the shielding portion. The upper housing includes a positioning hook that engages in the positioning groove. A stepped structure is provided on the side of the third reinforcing rib away from the shielding portion, and the partition portion of the upper housing abuts against the stepped structure of the third reinforcing rib.

18. The seat assembly of the child safety seat according to claim 10, characterized in that, The upper housing also includes a fourth reinforcing rib, which extends in the front-rear direction and is connected to the rear side of the first reinforcing rib.

19. The seat assembly of the child safety seat according to claim 14, characterized in that, The upper housing also includes a fifth reinforcing rib, which is connected to the upper side wall and the left side wall of the upper armrest, and abuts against the inner side wall and the right side wall.

20. A child safety seat, characterized in that, Includes the seat assembly as described in any one of claims 1-19, a backrest assembly detachably disposed on the seat assembly, and a headrest assembly movably disposed on the backrest assembly.

21. A wing for a vehicle, characterized in that, The wing includes a wing body and a reinforcing structure, the reinforcing structure being formed by the wing body protruding outward.

22. The wing according to claim 21, characterized in that, The reinforcing structure includes at least two reinforcing protrusions, each of which is formed by protruding outward from the side wing body and is spaced vertically along the length of the side wing body.

23. The wing according to claim 22, characterized in that, The reinforcing protrusion extends from the first end of the side wing body to the second end of the side wing body in the width direction of the side wing body.

24. The wing according to claim 22, characterized in that, The protrusion height of the reinforcing protrusion is set in a shape that is low at both ends and high in the middle along the lateral direction of the reinforcing protrusion from the first end to the second end.

25. The wing according to claim 21, characterized in that, The longitudinal height of the reinforcing structure relative to the lower edge of the side wing body is greater than or equal to 280 mm.

26. The wing according to claim 22, characterized in that, The side wing also includes a breathable structure, which includes a breathable groove formed by the reinforcing protrusion at a corresponding position on the side wing body.

27. The wing according to claim 26, characterized in that, The breathable structure also includes a plurality of breathable openings formed within the breathable groove.

28. A vehicle, characterized in that, The vehicle includes a backrest, a seat, and side wings as described in any one of claims 21 to 27, wherein the lower end of the backrest is connected to the seat, and the side wings are connected to both sides of the backrest.

29. The vehicle according to claim 28, characterized in that, The longitudinal height of the reinforcing structure relative to the upper surface of the seat is configured such that when a passenger sits on the seat, the horizontal position of the reinforcing structure corresponds to the passenger's shoulder.

30. The vehicle according to claim 28, characterized in that, The angle between the side wing body and the backrest is greater than 90°.

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