Cushioning structure, cushioning assembly and child carrier system

Abstract

This invention discloses a seat cushion structure, a seat cushion assembly, and a child carrier system having the seat cushion structure. The seat cushion structure includes: a connecting unit for connecting to the headrest of the child carrier; a backrest unit connected to the connecting unit; and a seat unit connected to the backrest unit. The connecting unit drives the backrest unit and seat unit to move as the headrest moves. The seat cushion structure, seat cushion assembly, and child carrier system provided by this invention are suitable for children of different ages or heights and are easily adjustable.

Description

Technical Field

[0001] The present invention relates to the technical field of children's products, and in particular to a seat cushion structure, a seat cushion assembly, and a children's carrier system. Prior Art

[0002] Child carriers (such as child safety seats) are devices designed specifically for children. They are typically used in conjunction with a seat cushion structure to further support the child's body and enhance safety and comfort. Child carriers are generally designed to be adjustable to accommodate children of different ages and heights. Therefore, the seat cushion structure must be designed to be adjustable to accommodate children of different ages and heights. Summary of the Invention

[0003] In view of this, an object of the present invention is to provide a seat cushion structure, a seat cushion assembly, and a child carrier system including the seat cushion structure.

[0004] To this end, according to a first technical solution of the present invention, a seat cushion structure is provided, suitable for use in a child carrier, comprising: a connecting unit for connecting to a headrest portion of the child carrier; a backrest unit connected to the connecting unit; and a seat unit connected to the backrest unit; wherein the connecting unit drives the backrest unit and the seat unit to move as the headrest portion moves.

[0005] In one embodiment, the connecting unit includes: a headrest cushion connected to the backrest unit and used to support the child's head; and a connecting portion connected to the back of the headrest cushion and used to connect to the headrest portion.

[0006] In one embodiment, a portion of the connecting portion is spaced apart from the back of the headrest cushion to form a pocket-shaped portion, and the connecting unit is used to be sleeved onto the headrest portion to accommodate the headrest portion in the pocket-shaped portion.

[0007] In one embodiment, the connecting portion has an opening, and the opening is used to reveal the position operating member provided on the headrest portion.

[0008] In one embodiment, the seat unit has a crotch strap through hole, and the crotch strap through hole extends along the longitudinal direction of the seat unit to form a long strip.

[0009] In one embodiment, the seat unit includes: a seat cushion; a dividing portion connected to the seat cushion and dividing the seat cushion into at least a first seating area and a second seating area, the first seating area being connected between the backrest unit and the second seating area, and the seat cushion being able to be bent at the dividing portion.

[0010] In one embodiment, along the longitudinal direction of the seat cushion structure, the extension length of the first seating area is smaller than the extension length of the second seating area.

[0011] In one embodiment, the seat unit has an elongated crotch strap through-hole extending from the second seat area to the first seat area.

[0012] In one embodiment, along the longitudinal direction of the seat cushion structure, the extending length of the crotch strap through-hole in the first seat area is shorter than the extending length of the crotch strap through-hole in the second seat area.

[0013] In one embodiment, a first waist belt channel is provided at one end of the first seating area away from the second seating area, and the seat cushion is provided with a guide channel, which extends inward from the side edge of the seat cushion and connects to the first waist belt channel.

[0014] In one embodiment, the seat cushion is further provided with a second lumbar belt channel, and the second lumbar belt channel is located outside the first lumbar belt channel along the transverse direction of the seat cushion.

[0015] In one embodiment, a portion of the second lap belt channel extends beyond the first lap belt channel along the longitudinal direction of the seat cushion toward the free end of the seat cushion.

[0016] In one embodiment, the seat cushion structure has two sets of waist belt fitting portions spaced apart in a transverse direction of the seat cushion structure, each set of waist belt fitting portions having at least two waist belt channels arranged in the transverse direction, so that the seat cushion structure can be used to match at least two width modes of the waist belt of the child carrier.

[0017] In one embodiment, the seat unit includes a seat cushion and two first side guards respectively connected to both sides of the seat cushion, the first side guards including: a first part connected to the seat cushion; a second part connected to the first part along the longitudinal direction of the seat cushion, the second part being closer to the backrest unit relative to the first part, and the second part being separated from the seat cushion.

[0018] In one embodiment, the seat unit includes a seat cushion and two first side guards respectively connected to both sides of the seat cushion, the first side guards having a first end and a second end arranged opposite to each other, the second end of the first side guard being closer to the backrest unit relative to the first end of the first side guard, the second end of the first side guard being provided with a first inclined edge, the first inclined edge extending obliquely from one side edge of the first side guard in a direction away from the side edge of the seat cushion so that the second end of the first side guard gives way to the side edge of the seat cushion.

[0019] In one embodiment, the backrest unit includes a backrest cushion and two second side guards respectively connected to both sides of the backrest cushion. The second end of the first side guard is provided with a second inclined edge. The second inclined edge extends obliquely from the other side edge of the first side guard in a direction away from the first end of the first side guard, so that the second end of the first side guard gives way to the second side guard.

[0020] In one embodiment, the second side guard has a first edge on a side close to the first side guard, and the first edge extends outwardly and obliquely in a direction away from the seat unit.

[0021] In one embodiment, the connecting unit is also used to support the child's head, and the seat cushion structure has two shoulder strap channels located between the connecting unit and the backrest unit.

[0022] In one embodiment, the seat cushion structure further includes a connector, which is used to connect to a structure in the child carrier that is located below the headrest and can move with the headrest; wherein the connector is connected to the connecting unit and is located on the back of the connecting unit, or the connector is connected to the backrest unit and is located on the back of the backrest unit.

[0023] According to a second technical solution of the present invention, a seat cushion assembly is provided, suitable for a child carrier, comprising a cushion body and the seat cushion structure according to the first technical solution above, the seat cushion assembly comprising a first usage mode and a second usage mode; wherein, when the seat cushion assembly is in the first usage mode, the seat cushion structure and the cushion body are used in combination, the cushion body is placed on the seat cushion structure and is used for a child to ride on; and when the seat cushion assembly is in the second usage mode, the cushion body is removed from the seat cushion structure, and the seat cushion structure is used for a child to ride on.

[0024] In one embodiment, the pad includes a main body and two fourth side guards respectively connected to both sides of the main body, and a through portion is formed between each of the fourth side guards and the corresponding side of the main body, and the through portion is used to allow the waist belt of the child carrier to pass through.

[0025] In one embodiment, the seat unit of the seat cushion structure has a seat cushion, and both outer sides of the seat cushion have lap belt passages.

[0026] According to a third technical solution of the present invention, a child carrier system is provided, comprising a child carrier and a seat cushion structure as provided in the first technical solution above, the seat cushion structure being detachably connected to the child carrier, wherein the seat body of the child carrier comprises: a seat portion; a backrest portion connected to the seat portion and forming a seating space together with the seat portion; and a headrest portion connected to the backrest portion and capable of sliding relative to the backrest portion in a longitudinal direction of the backrest portion; wherein the seat cushion structure is located within the seating space, and a connecting unit of the seat cushion structure is connected to the headrest portion.

[0027] In one embodiment, when the headrest slides relative to the backrest in a direction away from the seat portion, the distance between the free edge of the seat unit of the seat cushion structure and the free edge of the seat portion increases; when the headrest slides relative to the backrest in a direction toward the seat portion, the distance between the free edge of the seat unit of the seat cushion structure and the free edge of the seat portion decreases.

[0028] In one embodiment, the child carrier system includes a head abutment surface and a back abutment surface, wherein the head abutment surface is provided on the headrest portion or the connecting unit, and is used to abut and support the child's head, and the back abutment surface is provided on the backrest unit of the seat cushion structure, and is used to abut and support the child's back; wherein, along a direction perpendicular to the head abutment surface, the head abutment surface is retracted relative to the backrest abutment surface toward the seat body.

[0029] In one embodiment, the child carrier includes a safety belt connected to the seat body, and the safety belt passes through the seat cushion structure to position the seat cushion structure in the seating space.

[0030] In one embodiment, the safety belt includes a lap belt, and the seat portion has two sets of lap belt connection assemblies. Each set of lap belt connection assemblies has at least two lap belt connection portions spaced apart in the transverse direction of the child carrier. The lap belt can be connected to any one of the at least two lap belt connection portions, so that the lap belt has at least two width modes.

[0031] In one embodiment, the headrest portion includes a headrest support sheet and a buffer component connected to the headrest support sheet, and the buffer component is located on a side of the headrest support sheet facing the seating space.

[0032] According to the seat cushion structure, seat cushion assembly, and child carrier system of the present invention, the position of the seat cushion structure can be displaced as the headrest of the child carrier moves. When the user adjusts the headrest to match the seated child, the position of the seat cushion structure can also be simultaneously adjusted to a position that matches the seated child. This makes the seat cushion structure suitable for children of different ages and heights and facilitates adjustment. Simple diagram description

[0033] FIG1 is a schematic diagram of a child carrier system according to a first embodiment of the present invention, wherein a seat cushion structure is located within the passenger space of the child carrier, and a safety belt and a cover mounted on the child carrier are shown.

[0034] FIG2 is a schematic diagram illustrating the seat body of the child carrier provided by the first embodiment of the present invention with the safety belt and the cover hidden, wherein the headrest is located at a lower position.

[0035] FIG3 is a schematic diagram of the child carrier provided by the first embodiment of the present invention after the seat body hides the safety belt and the cover, wherein the headrest is located at a higher position.

[0036] FIG4 is a schematic diagram of a child carrier provided by the first embodiment of the present invention, wherein the headrest extends through the covering.

[0037] FIG. 5 is a front view of the seat cushion structure provided by the first embodiment of the present invention after being laid flat.

[0038] FIG. 6 is a schematic diagram illustrating the back side of the seat cushion structure provided by the first embodiment of the present invention after being laid flat.

[0039] FIG7 is a schematic diagram illustrating the child carrier system provided by the first embodiment of the present invention after the shoulder straps and waist belt are hidden, wherein the headrest is located at a lower position.

[0040] FIG8 is a schematic diagram illustrating the child carrier system provided by the first embodiment of the present invention after the shoulder straps and waist belt are hidden, wherein the headrest is located at a higher position.

[0041] FIG. 9 is a schematic diagram of a child carrier provided by a second embodiment of the present invention.

[0042] FIG10 is a front view of a seat cushion structure provided by the second embodiment of the present invention after being laid flat, wherein the first side guard and the second side guard are removed from the seat cushion structure.

[0043] FIG11 is a schematic diagram of the back side of the seat cushion structure provided by the second embodiment of the present invention after being laid flat, wherein the first side guard and the second side guard are removed from the seat cushion structure, and the connecting body is not flipped upward.

[0044] FIG12 is a schematic diagram of the back side of the seat cushion structure provided by the second embodiment of the present invention after being laid flat, wherein the first side guard and the second side guard are removed from the seat cushion structure, and the connecting body is flipped upward.

[0045] FIG13 is a front view of a seat cushion structure provided by a second embodiment of the present invention after being laid flat, wherein the seat cushion structure is connected to a first side guard and a second side guard.

[0046] FIG14 is a schematic diagram showing the exploded back side of the seat cushion structure provided by the second embodiment of the present invention after being laid flat, wherein the connector is flipped upward.

[0047] FIG15 is a schematic diagram illustrating a usage method of the child carrier system provided by the third embodiment of the present invention, wherein the seat cushion assembly is in the first usage mode.

[0048] FIG. 16 is a schematic diagram illustrating another usage of the child carrier system provided by the third embodiment of the present invention, wherein the seat cushion assembly is in the second usage mode.

[0049] FIG. 17 is a front view of the seat cushion structure provided by the third embodiment of the present invention after being laid flat.

[0050] FIG. 18 is a schematic diagram illustrating the back side of the seat cushion structure provided by the third embodiment of the present invention after being laid flat.

[0051] FIG. 19 is a perspective view of a pad provided in accordance with a third embodiment of the present invention.

[0052] FIG. 20 is a top view of a pad provided in accordance with a third embodiment of the present invention.

[0053] FIG. 21 is a bottom view of a pad provided in accordance with a third embodiment of the present invention.

[0054] FIG. 22 is a perspective view illustrating the cooperation between the pad and the waist belt provided in the third embodiment of the present invention.

[0055] FIG. 23 is a cross-sectional view taken along line AA of FIG. 22 . Implementation Method

[0056] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive disclosure of the present invention.

[0057] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element and integrated with it, or there may be an intermediate element. The terms "mounted," "one end," "the other end," and similar expressions used herein are for illustrative purposes only.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0059] Referring to FIG. 1 , a schematic diagram of a child carrier system according to the present invention is shown. The child carrier system includes a seat cushion structure 100 and a child carrier 200. The seat cushion structure 100 is detachably connected to the child carrier 200 and is positioned within the passenger compartment of the child carrier 200. While the child carrier 200 is illustrated in the figure using a carrier-type child safety seat as an example, the seat cushion structure 100 according to the present invention can also be used in other child carriers 200 that require child support, such as harness-type child safety seats, booster-type child safety seats, high chairs, and various types of strollers.

[0060] Referring to Figures 1 to 4 , a child carrier 200 includes a seat body 210, a safety belt connected to the seat body 210, and a cover 250 that fits over the seat body 210. The seat body 210 includes a headrest 240, a backrest 230, and a seat 220. The backrest 230 is connected to the seat 220 and together with the seat 220 form a seating space. The headrest 240 is connected to the backrest 230 and can slide relative to the backrest 230 in the longitudinal direction of the backrest 230. The seat body 210 also includes a headrest adjustment mechanism (not shown) and a position operating member (not shown) for a user to adjust the position of the headrest 240. By operating the position operating member, the user releases the headrest adjustment mechanism from locking the headrest 240. The user then slides the headrest 240 relative to the backrest 230 to a desired position, releasing the position operating member to lock the headrest 240. In this way, the position of the headrest portion 240 matches the riding child, and the child carrier 200 can be suitable for children of different ages or heights.

[0061] As shown in Figures 1 and 4, the safety belt of a child carrier 200 can restrain a child and keep them within the passenger compartment. The safety belt includes two shoulder straps 201, two waist belts 202, and a crotch strap 203. One end of the crotch strap is connected to the seat body 210, and the other end of the crotch strap is connected to a buckle 204. The shoulder straps 201 and waist belt 202 are provided with connectors that are detachably connected to the buckle 204. Of course, the safety belt can also be of other forms and is not limited to this. The safety belt passes through the seat cushion structure 100 to position the seat cushion structure 100 within the passenger compartment of the child carrier 200.

[0062] As shown in Figures 2 to 4, the headrest portion 240 can extend through the cover 250. The headrest portion 240 includes a headrest support sheet 2401 and a cushioning member 2402 connected to the headrest support sheet 2401. The cushioning member 2402 is located on the side of the headrest support sheet 2401 facing the passenger compartment. The headrest support sheet 2401 can be made of a material such as plastic or metal, and the cushioning member 2402 can be made of foam, such as EPP foam. The headrest support sheet 2401 can be connected to the backrest portion 230 and slide relative to the backrest portion 230. The headrest support sheet 2401 and the cushioning member 2402 can be secured together using an adhesive, a snap-fit ​​structure, or the like. The backrest portion 230 includes a backrest support sheet 2301, which can be made of a material such as plastic or metal, to provide support for the child's back. The headrest support piece 2401 is connected to the backrest support piece 2301. When the headrest support piece 2401 slides, it can drive the backrest support piece 2301 to move, so that the backrest support piece 2301 is also adjusted to a position that matches the child sitting on it.

[0063] As shown in Figures 2 and 3, the seat portion 220 has two sets of lap belt connection assemblies. Each set of lap belt connection assemblies includes two lap belt connection portions spaced apart in the transverse direction of the child carrier 200. The lap belt can be connected to either of the two lap belt connection portions, allowing the lap belt to have two width configurations. Specifically, the two lap belt connection portions include a first lap belt connection portion 2201 and a second lap belt connection portion 2202. The second lap belt connection portion 2202 is located on the outside of the seat portion 220 in the transverse direction (or width direction) relative to the first lap belt connection portion 2201. The two lap belt connection portions are perforated. When the two lap belts are connected to the two second lap belt connection portions 2202, the width between the two lap belts 202 is larger, allowing them to restrain wider children. When the two lap belts 202 are connected to the two first lap belt connection portions 2201, the width between the two lap belts 202 is smaller, allowing them to restrain narrower children. In other embodiments, each set of waist belt connection assemblies may include only one waist belt connection portion, so that the waist belt 202 of the child carrier 200 can be used in only one width mode; or, each set of waist belt connection assemblies may include more than three waist belt connection portions, so that the waist belt 202 has more levels of width modes.

[0064] Referring to Figures 1, 5, and 6, Figure 5 illustrates the front side of the seat cushion structure 100 of this embodiment, i.e., the side facing the passenger compartment (toward the child), while Figure 6 illustrates the back side of the seat cushion structure 100 of this embodiment, i.e., the side facing the seat body 210 (away from the child). After being removed from the child carrier 200, the seat cushion structure 100 can be unfolded and laid flat, or folded and placed within the passenger compartment of the child carrier 200. The seat cushion structure 100 of this embodiment includes a connecting unit 110, a backrest unit 120, and a seat unit 130. The connecting unit 110 is used to connect to the headrest 240 of the child carrier 200, the backrest unit 120 is connected to the connecting unit 110, and the seat unit 130 is connected to the backrest unit 120. 7 and 8 , when the headrest 240 of the child carrier 200 slides relative to the backrest 230 to adjust the height of the headrest 240, the headrest 240 can drive the connecting unit 110 to slide together, and the connecting unit 110 then drives the backrest unit 120 and the seat unit 130 to move along with the movement of the headrest 240. When the user adjusts the position of the headrest 240, the position of the seat cushion structure 100 can be adjusted simultaneously, so that the positions of the backrest unit 120 and the seat unit 130 are adjusted to match the position of the child.

[0065] 1 , 5 and 6 , the connection unit 110 is also used to support the child's head. The seat cushion structure 100 has two shoulder strap channels 150 located between the connection unit 110 and the backrest unit 120 . The shoulder straps of the child carrier 200 can pass through the shoulder strap channels 150 .

[0066] 5 and 6 , the connection unit 110 includes a headrest cushion 111 and a connection portion 113. The headrest cushion 111 is connected to the backrest unit 120 and is used to support the child's head. The connection portion 113 is connected to the back of the headrest cushion 111 and is used to connect to the headrest portion 240 of the child carrier 200. The connection portion 113 can be connected to the back of the headrest portion 240 of the child carrier 200. In this embodiment, a portion of the connection portion 113 is spaced apart from the back of the headrest cushion 111 to form a pocket 1132. The connection unit 110 is designed to be fitted onto the headrest portion 240 of the child carrier 200 to accommodate the headrest portion 240 within the pocket 1132, for example, to enclose the headrest support sheet 2401 and the cushioning member 2402 within the pocket 1132. Furthermore, the connecting portion 113 has an opening 1131 , and the opening 1131 is used to expose a position operating member provided on the headrest portion 240 , so that the user can operate the position operating member to adjust the position of the headrest portion 240 .

[0067] In this embodiment, the connecting portion 113 is a sheet-like structure (e.g., a fabric sheet), and the upper edge and left and right edges of the connecting portion 113 are secured to the headrest cushion 111 (e.g., by sewing). The opening 1131 of the pocket 1132 faces downward. The connecting portion 113 covers approximately half of the upper back surface of the headrest 240, and the pocket 1132 fits over the upper portion of the headrest 240. In other embodiments, the connecting portion 113 may be a strap or snap fastener structure connected to the back surface of the headrest cushion 111.

[0068] Referring to Figures 1, 5, and 6, the seat unit 130 is used to support a child's hips and / or legs. The seat unit 130 has a crotch strap aperture 140 extending longitudinally along the seat unit 130 to form a long strip. The crotch strap aperture 140 allows the crotch strap 203 of the child carrier 200 to pass through. As the seat cushion structure 100 slides with the headrest 240, the crotch strap aperture 140 can slide with the seat unit 130 without interfering with the crotch strap 203. Adjustments to the seat unit 130 ensure that the crotch strap 203 remains in place, ensuring that the crotch strap 203 remains securely attached to the child.

[0069] Referring to Figures 1, 5, and 6, the seat unit 130 includes a seat cushion 131, a dividing portion 132, and two first side guards 133. The seat cushion 131 is used to support a child's buttocks and / or legs. The dividing portion 132 is connected to the seat cushion 131 and divides the seat cushion 131 into a first seating area 1311 and a second seating area 1312. The first seating area 1311 is connected between the backrest unit 120 and the second seating area 1312. The seat cushion 131 can be bent at the dividing portion 132. The first seating area 1311 generally supports the child's buttocks, while the second seating area 1312 generally supports the child's legs. However, due to differences in height and body proportions among children, the specific areas supported by the first and second seating areas 1311, 1312 may differ for different children. The dividing portion 132 may be a structure such as a seam, rivet, or a thinner portion of the seat cushion 131. Two first side guards 133 are connected to either side of the seat cushion 131, providing lateral protection for the child's lower body. In this embodiment, the first side guards 133 are fixedly connected to the seat cushion 131 (e.g., sewn together). In other embodiments, the first side guards 133 and seat cushion 131 may be detachably connected, allowing the user to choose whether to attach the first side guards as needed. Furthermore, in other embodiments, the seat cushion 131 may have only one seating area or be divided into three or more seating areas.

[0070] It should be noted that the first seating area 1311 and the second seating area 1312 allow the seat unit 130 to easily deform and adapt to different children's bodies when adjusted. For example, the first seating area 1311 can be adjusted to a lower position to accommodate shorter children (as shown in FIG7 ). In this case, the first seating area 1311 and the second seating area 1312 are relatively flat, or positioned substantially flat on the seat portion 220 of the child carrier 200, and the first seating area 1311 can support the lower part of the child's buttocks. Alternatively, the first seating area 1311 can be adjusted to a higher position to accommodate taller children (as shown in FIG8 ). In this case, the first seating area 1311 and the second seating area 1312 are relatively flat, and the first seating area 1311 can support the back of the child's buttocks. In this embodiment, the seat unit 130 is thinner at the boundary 132, making it easier to bend.

[0071] Taking the seat cushion structure 100 shown in Figure 5 as an example, the vertical direction of the seat cushion structure 100 is the longitudinal direction, which also corresponds to the extension direction of the connecting unit 110, the backrest unit 120, and the seat unit 130. The horizontal direction of the seat cushion structure 100 is the transverse direction, which also corresponds to the width direction of the connecting unit 110, the backrest unit 120, and the seat unit 130. Referring to Figures 5 and 6, along the longitudinal direction of the seat cushion structure 100, the extension length of the first seat area 1311 is less than the extension length of the second seat area 1312. The elongated crotch strap perforations 140 extend from the second seat area 1312 to the first seat area 1311. When the seat cushion structure 100 is used to support a small child and the seat unit 130 is pulled away from the backrest portion 230, the first seat area 1311 still does not interfere with the crotch strap. Furthermore, along the longitudinal direction of the seat cushion structure 100, the crotch strap through-hole 140 extends longer in the first seating area 1311 than in the second seating area 1312. As shown in Figures 5 and 6, the crotch strap through-hole 140 is located approximately in the middle of the extended length of the seat cushion 131.

[0072] Referring to Figures 1, 5, and 6, the seat cushion structure 100 has two sets of lap belt fitting portions spaced apart along the transverse direction of the seat cushion structure 100. Each set of lap belt fitting portions has two lap belt channels arranged along the transverse direction, enabling the seat cushion structure 100 to accommodate two width patterns of the lap belt 202 of the child carrier 200. Each set of lap belt fitting portions includes a first lap belt channel 160a and a second lap belt channel 160b for passing the lap belt 202 of the child carrier 200. The first lap belt channel 160a and the second lap belt channel 160b are spaced apart along the transverse direction of the seat cushion structure 100, with the second lap belt channel 160b located outboard of the first lap belt channel 160a along the transverse direction of the seat cushion 131. In this embodiment, the second lap belt channel 160b is located at a side edge of the seat cushion 131. A portion of the second lap belt channel 160b extends beyond the first lap belt channel 160a along the longitudinal direction of the seat cushion 131 toward the free end of the seat cushion 131. Therefore, when the seat cushion structure 100 is moved to accommodate an older or taller child, the seat cushion 131 retracts toward the backrest portion 230 of the child carrier 200. The second lap belt channel 160b provides more clearance for the lap belt 202, making the seat cushion structure 100 more adaptable.

[0073] Specifically, a first lap belt channel 160a is provided at one end of the first seating area 1311, distal from the second seating area 1312. The seat cushion 131 is provided with a guide channel 160c extending inward from a side edge 1313 of the seat cushion 131 and connecting to the first lap belt channel 160a. The lap belt 202 of the child carrier 200 can pass through the guide channel 160c and enter the first lap belt channel 160a, thereby positioning the lap belt 202. A second lap belt channel 160b is provided at the side edge 1313 of the seat cushion 131, which restricts movement of the lap belt 202.

[0074] It should be noted that, in other embodiments, each set of waist belt matching portions of the seat cushion structure 100 may include only one waist belt channel, for example, only the first waist belt channel 160a or only the second waist belt channel 160b; each set of waist belt matching portions of the seat cushion structure 100 may also include more than three waist belt channels, so that the seat cushion structure 100 can be used to match more levels of width patterns of the waist belt 202 of the child carrier 200.

[0075] 5 and 6 , the first side guard 133 includes a first portion 1331 and a second portion 1332. The second portion 1332 is connected to the first portion 1331 along the longitudinal direction of the seat cushion 131 and is closer to the backrest unit 120 than the first portion 1331. The first portion 1331 is connected to the seat cushion 131 (more specifically, the first portion 1331 is connected to the second seating area 1312), while the second portion 1332 is separated from the seat cushion 131. Thus, while ensuring the connection between the first side guard 133 and the seat cushion 131, the second lap belt channel 160b is also conveniently extended to the gap 134 between the second portion 1332 and the seat cushion 131. When the child is larger and wider, the lap belt 202 needs to be positioned in the second lap belt channel 160b, and the seat unit 130 will move closer to the backrest 230. In this embodiment, the separation between the second portion 1332 and the seat cushion 131 can prevent the first side guard 133 from interfering with the lap belt 202. In addition, the portion of the seat cushion 131 close to the backrest unit 120 (for example, the first seat area 1311 and the portion of the second seat area 1312 close to the first seat area 1311) will be squeezed and deformed by the child's approximate buttocks area (for example, this portion fits the child's buttocks and is concave inward). In this embodiment, the second portion 1332 is separated from the seat cushion 131 to prevent the first side guard 133 from deforming as the seat cushion 131 deforms, thereby preventing the first side guard 133 from deforming and twisting, which may affect the child's riding comfort and safety.

[0076] 5 and 6 , the first side guard 133 has a first end 1333 and a second end 1334 that are oppositely disposed. The second end 1334 of the first side guard 1333 (e.g., the free end of the second portion 1332) is closer to the backrest unit 120 than the first end 1333 of the first side guard 1333. The second end 1334 of the first side guard 1333 is defined by a first inclined edge 13341 and a second inclined edge 13342. The first inclined edge 13341 and the second inclined edge 13342 are connected, more specifically, by a circular arc transition.

[0077] 5 and 6 , more specifically, the first side guard 133 has a first side 1335 and a second side 1336 that are oppositely disposed. The first side 1335 of the first side guard 133 is connected to the seat cushion 131. The first inclined edge 13341 extends obliquely from one side of the first side guard 133 (i.e., the first side 1335 of the first side guard 133) in a direction away from the side edge 1313 of the seat cushion 131, such that the second end 1334 of the first side guard 133 clears the side edge 1313 of the seat cushion 131. In other words, the first oblique edge 13341 extends obliquely from the first side 1335 of the first side guard 133 toward the second side 1336 of the first side guard 133 and in a direction away from the first end 1333 of the first side guard 133. When the seat unit 130 of the seat cushion structure 100 is bent, the side edge 1313 of the seat cushion 131 (for example, the side edge 1313 of the first seating area 1311) will bend toward the first side guard 133. Compared to the first side 1335 of the first side guard 133 extending roughly in a straight line, the provision of the first inclined edge 13341 in this embodiment can prevent the second end 1334 of the first side guard 133 from interfering with the side edge 1313 of the seat cushion 131. The second end 1334 of the first side guard 133 can give way to the side edge 1313 of the seat cushion 131. In some scenarios, when the first seating area 1311 is located at a higher position and bent at a larger angle relative to the second seating area 1312, the first inclined edge 13341 can abut the side edge 1313 of the seat cushion 131; in some scenarios, for example, when the first seating area 1311 is roughly flat on the seat portion 220, the first inclined edge 13341 and the side edge 1313 of the seat cushion 131 are set separately.

[0078] 5 and 6 , the second inclined edge 13342 extends in a direction different from that of the first inclined edge 13341. The second inclined edge 13342 extends obliquely from the other side of the first side guard 133 (i.e., the second side 1336 of the first side guard 133) toward a direction away from the first end 1333 of the first side guard 133.

[0079] Referring to Figures 5 and 6 , the backrest unit 120 includes a backrest cushion 121 and two second side guards 122 connected to either side of the backrest cushion 121. The backrest cushion 121 is used to support a child's back. The second side guards 122 have a first edge 1221 and a second edge 1222 disposed opposite each other along the longitudinal direction of the seat cushion structure 100. The first edge 1221 is located on the side of the second side guard 122 proximal to the first side guard 133, while the second edge 1222 is closer to the connection unit 110 than the first edge 1221. Unlike the generally straight second side 1336 of the first side guard 133, in this embodiment, a second inclined edge 13342 is provided to allow the second end 1334 of the first side guard 133 to clear the way of the second side guard 122. This prevents interference between the second side guard 122 and the second end 1334 of the first side guard 133 when the backrest unit 120 is in a lowered position. It should be noted that the first edge 1221 extends outwardly and at an angle, away from the seat unit 130. When the backrest unit 120 is adjusted and moved downward to a certain position, the second inclined edge 13342 can abut the first edge 1221, and the first side protector 133 can help support the second side protector 122. In this embodiment, the second side protector 122 and the backrest cushion 121 are fixedly connected (e.g., sewn together); in other embodiments, the second side protector 122 and the backrest cushion 121 can also be detachably connected, and the user can choose whether to connect the second side protector 122 as needed, which is not limited here.

[0080] Referring to Figures 5 and 6 , the connection unit 110 also includes two third side guards 112 connected to either side of the headrest cushion 111. The third side guards 112 have third edges 1121 disposed opposite the second edge 1222 of the second side guard 122. The second edge 1222 extends obliquely, and the third edge 1121 extends obliquely and mates with the second edge 1222. It should be noted that the edges of the first side guard 133, the second side guard 122, and the third side guard 112 can be straight or curved, depending on practical needs, and this is not a limitation here. Furthermore, the seat cushion structure 100 may also be provided without the first side guard 133, the second side guard 122, or the third side guard 112. It should be noted that the connection unit 110 of the seat cushion structure 100 may be provided without the headrest cushion 111 and the third side guard 112, with the child seat's headrest portion 240 directly contacting and supporting the child's head. For example, the headrest portion 240 is provided with a connecting hole or a connecting buckle, and the connecting unit is a belt-like structure (such as a strap) connected to the backrest unit 120, and the belt-like structure is tied together with the headrest portion 240 through the connecting hole, or the connecting unit is a mating buckle connected to the backrest unit 120, and the mating buckle is engaged with the connecting buckle of the headrest portion 240.

[0081] Referring to Figures 1, 7, and 8, the seat cushion structure 100 is positioned within the passenger compartment of a child carrier 200, with the connection unit 110 of the seat cushion structure 100 connected to the headrest 240. When the headrest 240 slides relative to the backrest 230 away from the seat 220 (i.e., when the height of the headrest 240 is raised), for example, from the lower position in Figure 7 to the higher position in Figure 8, the distance between the free edge of the seat unit 130 of the seat cushion structure 100 and the free edge of the seat 220 increases, i.e., the distance increases from H1 to H2. When the headrest 240 slides relative to the backrest 230 toward the seat 220 (i.e., when the height of the headrest 240 is lowered), for example, from the higher position in Figure 8 to the lower position in Figure 7, the distance between the free edge of the seat unit 130 of the seat cushion structure 100 and the free edge of the seat 220 decreases, i.e., the distance decreases from H2 to H1.

[0082] As shown in Figures 7 and 8, when the position of the headrest 240 is adjusted, the seat unit 130 moves, and the position of the crotch strap 203 within the crotch strap aperture 140 also changes. The crotch strap aperture 140 has a first end 141 and a second end 142 that are positioned opposite each other. The first end 141 of the crotch strap aperture 140 is closer to the backrest unit 120 than the second end 142 of the crotch strap aperture 140. In Figure 7, the crotch strap 203 is positioned within the crotch strap aperture 140 and closer to the first end 141 of the crotch strap aperture 140. In Figure 8, the crotch strap 203 is positioned within the crotch strap aperture 140 and closer to the second end 142 of the crotch strap aperture 140.

[0083] Referring to Figure 1 , the child carrier system includes a head-supporting surface and a back-supporting surface. The head-supporting surface is provided on the connecting unit 110 and is used to support and abut the child's head. The back-supporting surface is provided on the backrest unit 120 of the seat cushion structure 100 and is used to support and abut the child's back. The head-supporting surface is recessed relative to the backresting surface in a direction perpendicular to the head-supporting surface, toward the seat body 210. The recessed distance can be set to be greater than 0 mm and less than or equal to 15 mm. This reduces the risk of the child's head bending toward their back and facilitates breathing. In other embodiments, the connecting unit 110 of the seat cushion structure 100 does not support the child's head. Instead, the headrest 240 of the child carrier 200 supports and abuts the child's head. In this case, the head-supporting surface is provided on the headrest 240 of the child carrier 200.

[0084] The following describes the user operation process in this embodiment:

[0085] 1 , 7 , and 8 , the user first connects the seat cushion structure 100 to the child carrier 200, connects the connection unit 110 of the seat cushion structure 100 to the headrest 240 of the child carrier 200, exposes the position operating member of the headrest 240 from the opening 1131 of the connection portion 113, and passes the shoulder strap 201, waist strap 202, and crotch strap 203 through the shoulder strap channel 150, waist belt channel (first waist belt channel 160a or second waist belt channel 160b), and crotch strap through-hole 140 of the seat cushion structure 100, respectively. As a result, the seat cushion structure 100 is positioned within the passenger space of the child carrier 200. When a child is riding, the user operates the position control member on the headrest 240 according to the child's height and body shape, causing the headrest 240 to move and adjust to a suitable position. During this movement, the headrest 240 drives the connecting unit 110, the backrest unit 120, and the seat unit 130 to move, so that the backrest unit 120 and the seat unit 130 also move to a position that matches the child. The child sits in the riding space, supported by the seat cushion structure 100, and then fastens the seat belt.

[0086] FIG9 is a schematic diagram illustrating a child carrier 200 according to a second embodiment of the present invention. The child carrier 200 of the second embodiment also includes a seat body 210, a safety belt connected to the seat body 210, and a cover 250 disposed over the seat body 210. The child carrier 200 of this embodiment is a variation of the child carrier 200 of the first embodiment described above. Unless otherwise specified, the structure and interconnection relationships of the components of the child carrier 200 of this embodiment can be found in the description of the first embodiment above. The following primarily describes the differences between this embodiment and the first embodiment.

[0087] Referring to FIG. 9 , the second embodiment presents a modification to the child carrier of the first embodiment. The main difference lies in that, in addition to the headrest portion 240 (which also includes a headrest support sheet 2401 and a cushioning member 2402) extending through the cover 250, the backrest support sheet 2301 connected to the headrest support sheet 2401 also extends through the cover 250. The other components of the child carrier 200 of the second embodiment and their corresponding connections are similar to those of the first embodiment and will not be further described here.

[0088] 10 to 14 , similar to the first embodiment, the seat cushion structure 100 of the second embodiment includes a connecting unit 110, a backrest unit 120, a seat unit 130, a crotch belt through-hole 140, a shoulder belt channel 150, a first waist belt channel 160a, a second waist belt channel 160b and a guide channel 160c. The connecting unit 110 also includes a headrest cushion 111, a third side guard 112, a connecting portion 113, an opening 1131 and a pocket-shaped portion 1132. The backrest unit 120 also includes a backrest cushion 121. The seat unit also includes a seat cushion 131, a first seat area 1311, a second seat area 1312 and a dividing portion 132. The seat cushion structure 100 in this embodiment is a variation of the seat cushion structure 100 in the first embodiment above. In the absence of any conflict, the structures of the components of the seat cushion structure 100 in this embodiment and the connection relationship between the components can be referred to the description in the first embodiment above. The following mainly describes the differences between this embodiment and the first embodiment above, and the same parts will not be repeated here.

[0089] Referring to Figures 13 and 14 , compared to the first embodiment, in the seat cushion structure 100 of the second embodiment, the seat cushion 131 and the two first side guards 133 are detachably connected, and the backrest cushion 121 and the two second side guards 122 are detachably connected. Specifically, a connecting mechanism 170 is provided between the seat cushion 131 and the first side guards 133 to achieve a detachable connection. The connecting mechanism 170 may be a snap (as shown in Figure 14 ), Velcro, or webbing. Similarly, a connecting mechanism 170 is provided between the backrest cushion 121 and the second side guards 122 to achieve a detachable connection.

[0090] In this embodiment, the first side guard 133 is provided with an extension portion 1337 (which may be referred to as the first extension portion 1337), and the second side guard 122 is provided with an extension portion 1223 (which may be referred to as the second extension portion 1223). The connecting mechanism 170 is a snap button, which includes a female snap button and a male snap button that cooperate with each other. One of the female snap button and the male snap button is provided on the back surface of the seat cushion 131 and the back surface of the backrest cushion 121, and the other of the female snap button and the male snap button is provided on the extension portion 1337 of the first side guard 133 and the extension portion 1223 of the second side guard 122. When the first side guard 133 is connected to the seat cushion 131 and the second side guard 122 is connected to the back cushion 121, the extension 1337 of the first side guard 133 is blocked by the seat cushion 131, and the extension 1223 of the second side guard 122 is blocked by the back cushion 121. In addition, the connection structure 170 is located on the back side of the seat cushion 131 and the back side cushion 121, so as not to affect the user's sitting comfort.

[0091] Referring to Figures 11, 12, and 13, compared to the first embodiment, the seat cushion structure 100 of the second embodiment further includes a connector 180. The connector 180 is connected to the connection unit 110 and located on the back of the connection unit 110, or is connected to the backrest unit 120 and located on the back of the backrest unit 120. The connector 180 is used to connect to a structure located below the headrest 240 in the child carrier 200 and capable of moving with the headrest 240. This increases the stability of the connection between the seat cushion structure 100 and the child carrier 200 and reduces the risk of the headrest 240 becoming detached from the seat cushion structure 100, preventing the headrest 240 from driving the seat cushion structure 100. Specifically, in this embodiment, the connector 180 is used to connect to the backrest support sheet 2301. Because the backrest support sheet 2301 is connected to the headrest support sheet 2401, the backrest support sheet 2301 can move with the headrest 240.

[0092] Specifically, in this embodiment, the connector 180 is connected to the lower end of the headrest cushion 111 of the connection unit 110 (e.g., the connection between the headrest cushion 111 and the backrest cushion 121). The connector 180 is pocket-shaped and is designed to fit over the exterior of the backrest support sheet 2301. When the seat cushion structure 100 is not yet connected to the child carrier 200, the connector 180 can be flipped upward (as shown in Figures 12 and 14) or flipped downward (as shown in Figure 11). When the connector 180 is connected to the backrest support sheet 2301 (or when the connector 180 is flipped downward around the connection between the connector 180 and the headrest portion 240), the connector 180 at least partially overlaps the backrest unit 120 when viewed in the front-to-back direction (as shown in Figure 11). When the connector 180 is placed over the backrest support sheet 2301, the backrest support sheet 2301 exposed by the cover 250 is obscured. The backrest unit 120 is located in front of the connector 180 and obscured from view, allowing the user to sit on the front of the seat cushion structure 100. In this embodiment, the connector 180 is a cloth cover and is placed over the backrest support sheet 2301. The connector 180 and the backrest unit 120 overlap, increasing the thickness of the seat cushion structure 100 and enhancing the child's riding comfort. The connector 180 and the connection unit 110 or the backrest unit 120 can be fixedly connected (e.g., by stitching) or detachably connected (e.g., by snaps, Velcro, etc.). In other embodiments, the connector 180 can also be a strap, fastener, or other structure.

[0093] During operation, compared to the first embodiment, the user needs to add the step of connecting the connector 180 to the backrest support plate 2301 for the seat cushion structure 100 of the second embodiment. The remaining operation procedures can be referred to the operation procedures of the first embodiment described above and will not be repeated here. It is understood that the user can choose whether to remove the first and second side protectors according to actual needs. When the first and second side protectors are removed, the seat cushion structure has a relatively large seating area, suitable for children of larger or older sizes. When the seat cushion is connected to the first side protectors and the backrest cushion is connected to the second side protectors, the seat cushion structure has a relatively small seating area, suitable for children of smaller or younger sizes.

[0094] Figures 15 and 16 illustrate two different usage modes of a child carrier system according to a third embodiment of the present invention. Figure 15 shows the safety belt and cover 250 installed on a child carrier 200, with the headrest 240 positioned lower. Figure 16 shows the safety belt and cover 250 installed on a child carrier 200, with the headrest 240 positioned higher.

[0095] The child carrier system of the third embodiment includes a child carrier 200 and a seat cushion assembly. The seat cushion assembly includes a seat cushion structure 100 and a cushion body 300. The seat cushion structure 100 is detachably connected to the child carrier 200, and the cushion body 300 is detachably connected to the seat cushion structure 100. Thus, the seat cushion assembly has a first use mode and a second use mode. As shown in FIG15 , when the seat cushion assembly is in the first use mode, the seat cushion structure 100 can be used in combination with the cushion body 300. The cushion body 300 is placed on the seat cushion structure 100 and is used to seat a child. Both the seat cushion structure 100 and the cushion body 300 are positioned within the passenger compartment of the child carrier 200. As shown in FIG16 , when the seat cushion assembly is in the second use mode, the cushion body 300 is removed from the seat cushion structure 100, allowing the seat cushion structure 100 to be used alone in the child carrier 200. The seat cushion structure 100 is positioned within the passenger compartment of the child carrier 200 and is used to seat a child. The cushion body 300 may also be referred to as an auxiliary seat cushion or an additional seat cushion. When the cushion body 300 is used, the child safety seat can be used by children of smaller size or age, such as newborns.

[0096] Referring to Figures 17 and 18 , similar to the first embodiment, the seat cushion structure 100 of the third embodiment includes a connection unit 110, a backrest unit 120, a seat unit 130, a crotch strap aperture 140, and a shoulder strap channel 150. The connection unit 110 similarly includes a headrest cushion 111, a third side protector 112, a connection portion 113, an opening 1131, and a pocket 1132. The backrest unit 120 similarly includes a backrest cushion 121. The seat unit 130 similarly includes a seat cushion 131, a first seating area 1311, a second seating area 1312, and a boundary portion 132. The seat cushion structure 100 of this embodiment is a variation of the seat cushion structure 100 of the first embodiment. Unless otherwise specified, the components of the seat cushion structure 100 of this embodiment and the connections between the components can be found in the description of the first embodiment. The following primarily describes the differences between this embodiment and the first embodiment, and the common features are not reiterated here.

[0097] In the third embodiment, the seat cushion structure 100 is not provided with the first waist belt channel 160a and the guide channel 160c, but is provided with two waist belt passages 160d located on both outer sides of the seat cushion 131, and the two waist belts 202 can pass through the two waist belt passages 160d respectively.

[0098] Figures 19 to 21 illustrate a cushion body 300 according to a third embodiment. The cushion body 300 includes a main body 310 and two fourth side guards 320, each connected to either side of the main body 310. The fourth side guards 320 and the main body 310 may be detachably or fixedly connected. The cushion body 300, connected to the main body 310 by the two fourth side guards 320, forms a child-friendly seating space (as shown in Figure 19). In this embodiment, when the cushion body 300 is placed on the seat structure 100, its main body 310 at least partially obscures the seat unit 130 and backrest unit 120 of the seat structure 100. The headrest 111 of the seat structure 100 is elevated above the cushion body 300. The seat assembly primarily provides support for the user via the connection unit 110 between the cushion body 300 and the seat structure 100.

[0099] Referring to Figures 19 to 21 , the main body 310 includes a first main body area 311 and a second main body area 312, which are connected. The first main body area 311 is provided with a through-hole 330 for passing the crotch strap 203 of the child carrier 200. In this embodiment, the through-hole 330 extends in the transverse direction of the pad 300 (the left-right direction in Figures 20 or 21 is considered the transverse direction of the pad 300) to form a long strip. Two fourth side guards 320 are respectively connected (fixedly or removably) to either side of the first main body area 311. The two fourth side guards 320 are also respectively removably connected to either side of the second main body area 312. When the two fourth side guards 320 are detached from the second main body area 312, the cushion body 300 can be spread out flat for easy storage. When the two fourth side guards 320 are connected to both the first main body area 311 and the second main body area 312, the first main body area 311 and the second main body area 312 are bent at their connection position and are arranged at an angle. In this embodiment, the angle between the first main body area 311 and the second main body area 312 is greater than 90 degrees and less than 180 degrees, and roughly matches the angle between the seat portion 220 and the backrest portion 230 of the child carrier 200.

[0100] Furthermore, a connecting structure 170 is provided between the fourth side guard 320 and the second main body section 312 to achieve a detachable connection. This connecting structure 170 may be a snap, Velcro, or connecting webbing. In this embodiment, the connecting structure 170 is a snap, comprising a matching female snap and a male snap. One of the female snap and the male snap is located on the back of the second main body section, while the other is located on the extension 323 (also known as the third extension 323) of the fourth side guard 320. When the female snap and the male snap are connected, the extension 323 of the fourth side guard 320 is located on the back of the second main body section 312. When the pad 300 is in use, the extension 323 of the fourth side guard 320 is obscured by the second main body section 312. It should be noted that in other embodiments, the two fourth side guards 320 can be fixedly connected to either side of the second main body section 312, while the two fourth side guards 320 can be detachably connected to either side of the first main body section 311. This allows the cushion 300 to be unfolded and stored when not in use. Alternatively, the two fourth side guards 320 can be completely detachable from the main body section 310 (for example, the fourth side guards 320 can be detachably connected to both the first and second main body sections 311, 312 via the connection mechanism 170). When the cushion 300 is needed, the two fourth side guards 320 can be connected to the main body section 310. Alternatively, in other embodiments, the fourth side guards 320 are completely fixedly connected to the main body section 310 and cannot be detached at any position. In this case, the cushion 300 will maintain the three-dimensional configuration shown in FIG. 19 and cannot be unfolded.

[0101] Furthermore, as shown in Figures 20 and 23, after the fourth side guards 320 are connected to the second main body section 312, a through-portion 340 is formed between each fourth side guard 320 and the corresponding side of the second main body section 312. The through-portion 340 is used to pass the waist belt 202 through. After passing through the waist belt passage 160d, the waist belt 202 can further pass through the through-portion 340.

[0102] In this embodiment, the width of the first main body region 311 gradually increases from its end connecting to the second main body region 312 toward its end away from the second main body region 312 (or the free end of the first main body region 311). The width of the second main body region 312 gradually increases from its end connecting to the first main body region 311 toward its end away from the first main body region 311 (or the free end of the second main body region 312). The fourth side guard 320 has a first side edge 321 and a second side edge 322 arranged at an angle. The first side edge 321 connects to the first main body region 311, and the second side edge 322 is configured to mate with the second main body region 312. The extension portion 323 of the fourth side guard 320 protrudes from the second side edge 322 and is located at the end of the fourth side guard 320 away from the first main body region 311. The fourth side guards 320 are generally fan-shaped. When the fourth side guards 320 are connected to the main body 310, the two fourth side guards 320 gradually expand outward in the width direction from both sides of the main body 310.

[0103] As can be appreciated, if the seat cushion structure 100 and the cushion body 300 are used together, the seating space will be relatively small, making the child carrier system suitable for children of smaller size or age. If the cushion body 300 is removed and the seat cushion structure 100 is used alone in the child carrier 200, the child carrier system is suitable for children of larger size or age. Typically, when the seat cushion structure 100 and the cushion body 300 are used together to accommodate smaller children, the headrest 240 of the child carrier 200 is adjusted relatively downward, and the free edge of the seat unit 130 of the seat cushion structure 100 is moved forward. As shown in FIG. 15 , the free edge of the seat unit 130 extends forward beyond the cushion body 300, exposing a portion of the seat unit 130.

[0104] The following describes the user operation process in the third embodiment:

[0105] 15 and 16 , the user first connects the seat cushion structure 100 to the child carrier 200, connects the connecting unit 110 of the seat cushion structure 100 to the headrest 240 of the child carrier 200, exposes the position operating member of the headrest 240 from the opening 1131 of the connecting portion 113, and passes the shoulder strap 201, waist strap 202, and crotch strap 203 through the shoulder strap channel 150, waist strap passage 160d, and crotch strap through-hole 140 of the seat cushion structure 100, respectively. As a result, the seat cushion structure 100 is positioned within the passenger space of the child carrier 200.

[0106] If the child is larger or older, the seat cushion structure 100 is used alone. The child sits on the seat cushion structure 100. The user operates the position control element on the headrest 240 according to the child's height and body shape, moving the headrest 240 to an appropriate position (e.g., the higher position shown in FIG16 ). During this movement, the headrest 240 drives the connecting unit 110, the backrest unit 120, and the seat unit 130 to move, so that the backrest unit 120 and the seat unit 130 also move to a position that matches the child. The child then sits in the seating space, supported by the seat cushion structure 100, and can then fasten the safety belt.

[0107] If the child is smaller or younger, the seat cushion structure 100 and cushion body 300 are used together, and the headrest 240 is adjusted to an appropriate position (e.g., the lower position shown in FIG15 ). This allows the connection unit 110, backrest unit 120, and seat unit 130 to be positioned appropriately for the child. The user places the cushion body 300 on the seat cushion structure 100, passes the lap belt 202 of the child carrier 200 through the lap belt passage 160d of the seat cushion structure 100 and the through-hole 340 of the cushion body 300, then connects the fourth side guard 320 of the cushion body 300 to the main body 310, passes the crotch belt 202 through the crotch belt through-hole 140 of the seat cushion structure 100 and the through-hole 330 of the cushion body 300, and then passes the shoulder belt 201 of the child carrier 200 through the shoulder belt passage 150 of the seat cushion structure 100 and out through the gap between the headrest 111 and the main body 310. The child sits in the seating space, supported by the seat cushion structure 100 and the cushion body 300, and then fastens the child's seat belt. The technical features of the above-described embodiments can be combined in any manner. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there are no contradictions in the combination of these technical features, they should be considered within the scope of this specification.

[0108] The above-described embodiments merely illustrate several implementations of the present invention. While their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and these variations and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

[0109] 100: Seat cushion structure 110: connection unit 111: Headrest cushion 112: Third side guard 1121: The Third Edge 113: Connecting part 1131: Open 1132: pouch 120: Backrest unit 121: Back cushion 122: Second side guard 1221: First Edge 1222: Second Edge 1223: Extension 130: Seating unit 131:Seat cushion 1311: First seating area 1312: Second seating area 1313: side edge 132: Boundary 133: First side guard 1331: Part 1 1332: Part 2 1333: First end 1333 1334: Second End 13341: First inclined edge 13342: Second inclined edge 1335: First side 1336: Second side 1337: Extension 134: Interval 140: Crotch strap perforation 141: First End 142: Second End 150: with channel 160a: First belt channel 160b: Second belt channel 160c: Guide channel 160d: Belt access 170: Connection structure 180: Connector 200:Children's carrier 201:Shoulder strap 202: Belt 203: Crotch belt 204: Buckle 210: Seat body 220: Seating Department 2201: First waist belt connection part 2202: Second waist belt connection 230: backrest 2301: Back support sheet 240: Headrest 2401: Headrest support piece 2402: Buffer 250: Cover H1, H2: Spacing 300: Pad body 310: Main body 311: First Main Area 312: Second Main Area 320: Fourth side guard 321: First side 322: Second side 323: Extension 330:Through hole 340:Through the

Claims

1. A seat cushion structure suitable for child vehicles, said seat cushion structure comprising: A connecting unit for connecting to the headrest of the child vehicle; The backrest unit is connected to the connecting unit; A seat unit is connected to the backrest unit; wherein the connecting unit causes the backrest unit and the seat unit to move as the headrest moves.

2. The seat cushion structure as claimed in claim 1, wherein the connecting unit comprises: A headrest, connected to the backrest unit and used to support the child's head; A connecting portion is attached to the back of the headrest and used to connect with the headrest portion; wherein a portion of the connecting portion is spaced apart from the back of the headrest to form a bag-shaped portion, and the connecting unit is used to be sleeved onto the headrest portion to accommodate the headrest portion into the bag-shaped portion.

3. The seat cushion structure as claimed in claim 1, wherein the seat unit comprises: Seat cushion; The seat cushion is connected to a dividing section and divides the seat cushion into at least a first seat area and a second seat area. The first seat area is connected between the backrest unit and the second seat area. The seat cushion is foldable at the dividing section.

4. The seat cushion structure as claimed in claim 3, wherein the extension length of the first seat area is less than the extension length of the second seat area along the longitudinal direction of the seat cushion structure; and / or the seat unit has an elongated crotch strap perforation extending from the second seat area to the first seat area.

5. The seat cushion structure as claimed in claim 4, wherein, along the longitudinal direction of the seat cushion structure, the extension length of the crotch strap perforation in the first seat area is less than the extension length of the crotch strap perforation in the second seat area.

6. The seat cushion structure as claimed in claim 3, wherein a first waist belt channel is provided at the end of the first seat area away from the second seat area, the seat cushion is provided with a guide channel extending inward from the side edge of the seat cushion and communicating with the first waist belt channel; the seat cushion is further provided with a second waist belt channel located outside the first waist belt channel along the lateral direction of the seat cushion.

7. The seat cushion structure as claimed in claim 1, wherein the seat cushion structure has two sets of belt fitting portions spaced apart along the lateral direction of the seat cushion structure, each set of belt fitting portions having at least two belt channels arranged along the lateral direction, so that the seat cushion structure can be used to fit at least two width patterns of the belt of the child vehicle.

8. The seat cushion structure as described in claim 1, wherein, It also includes a connector for connecting to a structure in the child carrier located below the headrest and movable with the headrest; wherein the connector is connected to the connecting unit and located on the back of the connecting unit, or the connector is connected to the backrest unit and located on the back of the backrest unit.

9. A seat cushion assembly suitable for child vehicles, wherein, The seat cushion assembly includes a cushion body and a seat cushion structure as claimed in any one of claims 1 to 8, the seat cushion assembly comprising a first use mode and a second use mode; wherein: when the seat cushion assembly is in the first use mode, the seat cushion structure is used in combination with the cushion body, the cushion body being placed on the seat cushion structure and used for a child to sit on; when the seat cushion assembly is in the second use mode, the cushion body is removed from the seat cushion structure, the seat cushion structure being used for a child to sit on.

10. A child vehicle system, wherein, The invention includes a child vehicle and a seat structure as described in any one of claims 1 to 8, the seat structure being detachably connected to the child vehicle, wherein the seat body of the child vehicle includes: a seat portion; a backrest portion connected to the seat portion and forming a seating space together with the seat portion; and a headrest portion connected to the backrest portion and slidable relative to the backrest portion in the longitudinal direction of the backrest portion; wherein the seat structure is located within the seating space, and a connecting unit of the seat structure is connected to the headrest portion.

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