Child safety seat and seat assembly thereof

Abstract

The invention relates to a child safety seat and a seat assembly thereof. The seat assembly comprises an upper shell and a lower shell. And the lower shell is matched and connected with the upper shell. Wherein one of the upper shell and the lower shell is provided with a first positioning piece, and the other one is provided with a second positioning piece. The first positioning piece comprises a first positioning body and a guiding part arranged on the first positioning body, and the second positioning piece abuts against the first positioning piece under the guiding of the guiding part. According to the seat assembly, in the assembling process of the upper shell and the lower shell, the guiding part can guide the second positioning piece to be accurately aligned with the first positioning piece, so that the second positioning piece abuts against the first positioning piece, operation is convenient, and the assembling efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of children's products technology, and in particular to a child safety seat and its components. 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 part to accurately align with the first positioning part, thereby achieving the contact between the second positioning part and the first positioning part, 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 A perspective view of a child safety seat according to some embodiments of the first aspect;

[0057] Figure 2 for Figure 1 A 3D view of the child safety seat from another perspective;

[0058] Figure 3 for Figure 1 A 3D view of the seat components;

[0059] Figure 4 for Figure 3 Top view of the seat assembly shown;

[0060] Figure 5 for Figure 3 An exploded perspective view of the seat assembly shown.

[0061] Figure 6 for Figure 5 Enlarged view of part A in the middle;

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

[0063] Figure 8 For along Figure 4A sectional view of line VIII-VIII in the middle;

[0064] Figure 9 for Figure 8 Enlarged view of part B in the middle;

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

[0066] Figure 11 for Figure 10 Enlarged view of a section in the middle C;

[0067] Figure 12 For along Figure 4 A sectional view of line XII-XII in the middle;

[0068] Figure 13 for Figure 12 A magnified view of a section in part D;

[0069] Figure 14 for Figure 10 A magnified view of a section in part E;

[0070] Figure 15 For along Figure 4 A cross-sectional view of the XV-XV line;

[0071] Figure 16 for Figure 15 Enlarged view of a section of part F in the middle;

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

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

[0074] Figure 19 for Figure 18 A 3D view of the child safety seat from another perspective;

[0075] Figure 20 for Figure 18 A 3D view of the seat components;

[0076] Figure 21 for Figure 20 Top view of the seat assembly shown;

[0077] Figure 22 for Figure 20 An exploded perspective view of the seat assembly shown.

[0078] Figure 23 for Figure 22 Enlarged view of a section of the central G region;

[0079] Figure 24 for Figure 22 Enlarged view of a section in the middle H area;

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

[0081] Figure 26 for Figure 25 A magnified view of a section of the central I area;

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

[0083] Figure 28 for Figure 27 Enlarged view of a section of the J-shaped part;

[0084] Figure 29 For along Figure 21 A sectional view of line XIII-XIII in the middle;

[0085] Figure 30 for Figure 29 A magnified view of a section in the middle K area;

[0086] Figure 31 for Figure 29 Exploded view;

[0087] Figure 32 for Figure 22 A magnified view of a section in the middle L area;

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

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

[0090] Figure 35 For along Figure 21 A sectional view of the XVIII-XVIII line;

[0091] Figure 36 for Figure 35 Enlarged view of a section of the M-shaped part;

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

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

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

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

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

[0097] Figure 42 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 curled edges;

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

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

[0100] Figure label:

[0101] 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, Ventilation Structure; C431, Ventilation Groove; C432, Ventilation Opening; C44, Side Wing Rolled Edge; w, Width; h, Protrusion Height; H, Longitudinal Height. Detailed Implementation

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] Please see Figure 1 and Figure 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.

[0107] 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 for use with the backrest assembly A200 (see...). Figure 1 and Figure 2 ) and the No Back mode used by the A200 without a backing component (see Figure 3When the child safety seat is in the no-backrest mode, that is, 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-backrest mode, that is, when the backrest assembly 200 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, for example, in child safety seats where the backrest assembly A200 and the seat assembly A100 are not detachable, and this application is not limited thereto.

[0108] Please see 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.

[0109] Please see 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.

[0110] Please see Figure 5 and Figure 7An 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 side wall 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 portion includes a lower side wall, a front side wall, and an outer side wall located in the lower armrest portion A401, and an inner side wall and an upper side wall located in the upper armrest portion A201. The upper shell A20 has notches A203 on both sides of the support portion, corresponding to the upper armrest portion A201. Specifically, the orthographic projection of the upper armrest portion A201 onto the plane of the support portion is located within the notch A203. The lower shell A40 includes a shielding portion A47 connected to the side wall A46. The shielding portion A47 is formed by bending inward from the top of the side wall A46 and is connected to the lower side wall of the lower armrest portion A401. When the upper shell A20 and the lower shell 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 shielding portion A47 and the notch A203 not only facilitates the manufacturing of the upper shell A20 and the lower shell A40, but also provides a certain degree of guidance for the assembly of the upper shell A20 and the lower shell A40. Furthermore, in this embodiment, no unnecessary holes (such as screw holes for fixing and demolding holes simply for mold removal) are provided on the front wall A44, side wall A46, rear wall A48, shielding part A47, front and outer side walls of lower armrest part A401, and inner and upper side walls of upper armrest part A201 of the lower housing A40. Specifically, for the front wall A44 and side wall A46 of the lower housing A40, only the front wall A44 of the lower housing A40 has a hole for the adjustment webbing A43 to pass through, and a receiving hole for the storage box to slide at the connection between the front wall A44 and the side wall A46 of the lower housing A40. In other words, apart from the holes for other parts of the seat assembly A100 to extend out, the surfaces of 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.

[0111] 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.

[0112] Please see Figure 5 and Figure 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.

[0113] Please see 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.

[0114] Please see Figure 8 and Figure 9When 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. Figure 9 As shown, 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 housing A20 and the lower housing 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.

[0115] 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.

[0116] 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.

[0117] Please see Figure 1 and Figure 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.

[0118] In this embodiment, as Figure 10 As shown, 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 manual pulling. The two connecting sections A436 extend from the rear wall A48 of the lower housing A40 and are connected to the two connectors A41 respectively.

[0119] Please see Figure 5 and Figure 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 A10 and second positioning members A30 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.

[0120] 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.

[0121] 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.

[0122] 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.

[0123] Please see Figure 10 and Figure 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. Please refer 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.

[0124] like Figures 11 to 13 As shown, the third positioning member A50 also 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 along the circumference of 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 along the circumference of 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 depth to which the fourth positioning member A60 is inserted into the third positioning hole A52.

[0125] 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.

[0126] 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). Please refer to [link / reference]. Figure 10 and Figure 14 In this embodiment, the lower housing A40 is provided with a 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. Please refer to [link to previous document]. 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. Please refer to [link / reference]. Figure 15 and Figure 16 The positioning groove A74 is roughly 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. Therefore, the end of the second fixing member A80 can be inserted into the positioning groove A74 of the first fixing member A70.

[0127] 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.

[0128] 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. For more details, please refer to... Figure 7 and Figure 10 In this embodiment, there are ten first fixing members A70, four of which are located on the lower housing A40, near the rear wall A48 of the lower housing A40. Four more are located on the upper housing A20, near the front of the upper housing A20. The remaining two first fixing members A70 are located on the two lower armrest portions A401. There are also ten second fixing members A80, four of which are located on the upper housing A20, near the rear of the upper housing A20. Four more are located on the lower housing A40, near the front wall A44 of the lower housing A40. The remaining two second fixing members A80 are located on the two upper armrest portions A201. It is understood that the number of first fixing members A70 and second fixing members A80 can be other than those specified, and their positions can also be other than specified, as long as a one-to-one correspondence between the first fixing members A70 and the second fixing members A80 is maintained.

[0129] 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.

[0130] Please see Figure 3 and Figure 12 More specifically, the support portion of the upper housing A20 includes a seating portion A202 and an anti-slip portion A204 located on the front side of the seating portion A202. Figure 3(The area indicated by the dashed box). The anti-slip part A204 and the seating part A202 transition smoothly without a clear boundary. The seating part A202 is generally flat and supports the occupant's buttocks. The anti-slip part A204 is generally an upwardly convex arc surface that supports the occupant's thighs. The anti-slip part 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 part A204 is greater than the height of the seating part A202 to prevent the occupant from sliding forward while sitting. In this embodiment, the height difference H between the anti-slip part A204 and the seating part 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 part 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.

[0131] Please see Figure 2 and Figure 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 cause the lower end of the adjusting rod A304 to disengage 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.

[0132] Please see Figure 18 and Figure 19According 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 designed specifically 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.

[0133] Please see 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.

[0134] Please see 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.

[0135] Please see Figure 22 and Figure 25 The upper housing B20 is located 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.

[0136] 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.

[0137] The seat assembly B100 of this embodiment includes two armrests, left and right. Since the two armrests are symmetrical, the following description will focus solely on their left and right sides. Figure 22 The following description uses the armrest portion used to support a child's right hand as an example. In this embodiment, the armrest portion is generally square, including the inner sidewall B4011, front sidewall B4012, and right sidewall B4013 located in the lower armrest portion B401, and the left sidewall B2014 and upper sidewall B2015 located in the upper armrest portion B201. The inner sidewall B4011 extends rearward from the lower end of the front sidewall B4012 along an arc-shaped line until it connects approximately perpendicularly to the top of the sidewall B46, thus forming an approximately J-shaped receiving groove. The vehicle's seatbelt mainly abuts against the inner sidewall B4011 of the lower armrest portion B401. The rear end of the right sidewall B4013 extends downward and connects to the sidewall 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.

[0138] In this embodiment, as Figure 22 and Figure 25As shown, the upper shell B20 has a roughly U-shaped notch B203 on each side of the seating area B202. The orthographic projection of the upper armrest B201 onto the plane of the seating area B202 is located within the notch B203. The lower shell B40 may also 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 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 area 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.

[0139] 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.

[0140] Please see 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.

[0141] Please see Figure 23 , Figure 25 and Figure 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. Figure 26 As shown, 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 generally a smooth plane, and the rear end face is connected to a fourth reinforcing rib B2016 extending in the front-rear direction (as shown). Figure 25 (as shown), to enhance the strength of the first reinforcing rib B2012 in the front-rear direction.

[0142] Please see Figure 24 , Figure 27 and Figure 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 side wall B46 of the lower housing B40 is not perpendicular to the bottom wall B42 of the lower housing B40; instead, the side wall B46 is slightly inclined outward relative to the bottom wall B42. For example... Figure 24 and Figure 28 As shown, the second reinforcing rib B4012 has a stepped structure B4012a on the side 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.

[0143] Please see 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.

[0144] 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.

[0145] 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.

[0146] like Figure 22 and Figure 32As shown, 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 the second reinforcing rib B4012. The shape of the third reinforcing rib B4014 is similar to that of the second reinforcing rib B4012. It extends upward 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.

[0147] Please refer to it again. Figure 25 and Figure 26 The upper housing B20 is provided with a long strip-shaped 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.

[0148] Please see Figure 35 and Figure 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.

[0149] Please see Figure 25 , Figure 26 and Figure 33The upper shell B20 also includes a fourth reinforcing rib B2016. The fourth reinforcing rib B2016 is generally a square piece, extending 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 when subjected to excessive force in the front-rear direction.

[0150] Please see Figure 25 and Figure 33 The upper shell B20 also includes a fifth reinforcing rib B2018. The fifth reinforcing rib B2018 is approximately square. 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.

[0151] Please see Figure 18 , Figure 33 and Figure 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.

[0152] like Figure 22 As shown, 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.

[0153] like Figure 33 As shown, a first guide rail B2024 is provided on the back of the seating portion B202 of the upper housing B20. Figure 34As shown, 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.

[0154] like Figure 33 As shown, the first guide rail B2024 also has an engagement groove B2026 inside. (As...) Figure 34 As shown, a slider B4022 is also provided on one side of the storage box B402. The slider B4022 can slide within the engaging groove B2026, and the engaging 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.

[0155] Please see Figure 18 and Figure 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.

[0156] 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.

[0157] 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.

[0158] refer to Figure 37 and Figure 2 The illustration shows a perspective view of a vehicle C1000 according to an embodiment of a third aspect of the present invention. 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 top 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 in conjunction with the following description of the vehicle C1000.

[0159] See Figure 37 , Figure 38 and Figure 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.

[0160] See Figure 39 and Figure 40The figure illustrates the side wing C4 of the present invention. The following description uses one side wing 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 protruding outward from the side wing body C41. The side wing C4 can be made of plastic, but other materials can be selected 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 called the inner side, and the side of the side wing body C41 facing away from the seating space is called the outer side. Figure 40 As shown, the side wing body C41 includes a wing portion C411 and a connecting portion C412 connected to the wing portion C411. 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 portion C411 can be connected to the connecting portion C412 in a direction approximately perpendicular to the connecting portion C412; the specific angle is not limited here. For example, the wing portion C411 can also be connected to the connecting portion C412 at an angle greater than 90 degrees, that is, the wing portion C411 extends outwards at an angle relative to the plane perpendicular to the connecting portion C412. The wing portion C411 can be integrally formed with the connecting portion C412 or connected in other ways. The side wing C41 can also be other shapes besides L-shaped, such as being approximately flat, as long as it facilitates connection to the backrest portion C2 and provides lateral support for the occupant. The reinforcing structure C42 can be a convex-concave reinforcing structure, protruding outwards from the inner side 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 wing C4 and improve the lateral buffering performance.

[0161] See Figure 40 and Figure 41The 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 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 backrest C2, and the second end of the side wing body C41 may be the end connected to the backrest C2. Figure 40 As shown, 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 substantially 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 of the side wing body C41 to the second end; however, it can also extend in a curved manner from the first end of the side wing body C41 to the second end.

[0162] See Figure 41 and Figure 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.

[0163] See Figure 38 , Figure 42 and Figure 43The 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, for example, approximately 8 mm to approximately 11 mm. Although the protrusion height h of the reinforcing protrusion C421 has been given above, the present invention is not limited thereto, and the reinforcing protrusion C421 may also 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 positions 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 the 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.

[0164] See Figure 40 and Figure 43The reinforcing structure C42 is positioned at a certain 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 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 yet another 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 can also have a different height relative to the lower edge C413 of the side wing body C41.

[0165] See Figure 40 , Figure 41 and Figure 43The side wing C4 also includes a ventilated structure C43, which is formed on the side wing body C41 and configured to enhance the breathability 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. Forming 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 is slid 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 outwardly inclined segment C414 on the side wing body C41 facilitates 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. The ventilated openings C432 may be evenly distributed on the side wing body C41 and the reinforcing structure C42. In one embodiment, the ventilated openings C432 may be formed within ventilated grooves C431, thereby further enhancing the ventilability between the outer and inner sides of the side wing body C41. The vent opening C432 can be of various shapes, such as a strip hole, a square hole, a triangular hole, a circular hole, etc. In one embodiment, the vent opening C432 can be a circular hole.

[0166] 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.

[0167] See Figure 38 , Figure 40 and Figure 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 backing part 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. For example... Figure 40As shown, the side wing rolled edge C44 extends from the circumferential edge of the first side along the protruding direction of the reinforcing structure C42 for a distance greater than or equal to the protruding height h of the reinforcing structure C42, and then curls 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.

[0168] 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.

[0169] 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.

[0170] 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 of a child safety seat, characterized by 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. A seat assembly for a child safety seat according to claim 1, wherein, 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. A seat assembly for a child safety seat according to claim 2, wherein, 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 claim 1, wherein, 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. A seat assembly for a child safety seat according to claim 4, wherein, 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 claim 1, wherein, 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. A seat assembly for a child safety seat according to claim 6, wherein, 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 claim 1, wherein, 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 claim 1, wherein, 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 child safety seat, characterized in that Includes the seat assembly as described in any one of claims 1-9, a backrest assembly detachably disposed on the seat assembly, and a headrest assembly movably disposed on the backrest assembly.

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