Seat cushion structure and child safety seat

Abstract

To provide a reliable and safe seat cushion structure, and a child safety seat including the seat cushion structure.SOLUTION: A back cushion has a first surface and a second surface opposite to the first surface. The first surface is configured to face the child. A seat cushion is used to support a hip of the child. Here: the back cushion is provided with a pushing portion configured to make the first surface of the back cushion push the back of the child such that the back and the head of the child tend to be positioned in the same straight line; and / or the seat cushion is provided with a stopper portion configured to block the child from sliding down.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] This application relates to a seat cushion structure and a child seat including the seat cushion structure.

Background Art

[0002] A child seat is a device designed for children. Children are strapped into the safety seat during a ride, and in the event of a car collision or sudden deceleration, the impact force on the children can be reduced, thereby reducing the harm to them and effectively enhancing the safety of children during the ride.

[0003] For young or small infants, a seat cushion structure is usually added inside the child seat to further support the infant's body and enhance comfort and safety.

[0004] However, there are unreasonable points in the design structure of the conventional seat cushion structure. Infants are prone to slipping down their bodies during a ride, thus detaching their heads from the safety protection by the headrest set. Also, due to the unreasonable design angle of the conventional seat cushion structure, when slipping down, the infant's head is easily bent towards the body, and if the infant's chin touches the chest for a long time, it is likely to cause the risk of suffocation. Therefore, the conventional seat cushion structure could not provide comfortable, reliable, and safe support for infants.

Summary of the Invention

[0005] Therefore, the objective of this application is to provide a highly reliable and safe seat cushion structure and a child seat including the seat cushion structure.

[0006] In one aspect of the present application, a seat cushion structure applied to the seat body of a child seat is provided. The seat cushion structure includes a back cushion and a seat cushion. The back cushion is used to support the back of an infant. The back cushion has a first surface and a second surface facing away from the first surface. The first surface is configured to face the infant. The seat cushion is used to support the buttocks of the infant. Here, a push portion is provided on the back cushion. The first surface of the back cushion is pushed against the back of the infant by the push portion so that the back and head of the infant tend to be located on the same straight line, and / or here, a stopper portion is provided on the seat cushion. The stopper portion prevents the infant from slipping downward.

[0007] According to one embodiment, the push portion is located on the first surface or the second surface of the back cushion, and the outer surface of the push portion forms at least a part of the first surface of the back cushion or at least a part of the second surface of the back cushion.

[0008] According to one embodiment, the push portion is integrally formed on the back cushion, and the outer surface of the push portion forms at least a part of the second surface of the back cushion.

[0009] According to one embodiment, the push portion is a protrusion protruding in a direction away from the first surface of the back cushion.

[0010] According to one embodiment, the push portion increases the thickness of the material of the push portion of the back cushion to form the push portion in a convex shape, or the back cushion has a constant material thickness and is curved and raised at the push portion to form a convex shape.

[0011] According to an embodiment, the back cushion has a first end and a second end in the vertical direction, the first end of the back cushion is farther from the seat cushion than the second end of the back cushion, the thickness of the first end of the back cushion is a first thickness, the thickness of the second end of the back cushion is a second thickness, the thickness of the back cushion under the pressing is a third thickness, and the third thickness is greater than the second thickness.

[0012] According to an embodiment, the third thickness is greater than the first thickness.

[0013] According to an embodiment, the push part is located at a central position between the first end and the second end of the back cushion, and extends at least a part of the left and right width of the back cushion along the left and right direction of the back cushion.

[0014] According to an embodiment, ventilation holes are provided in the back cushion, and the ventilation holes extend from the first surface of the back cushion to the second surface of the back cushion.

[0015] According to an embodiment, the seat cushion has a second end facing the first end, and the first end of the seat cushion and the second end of the back cushion are connected to each other in an arc transition, and the second end of the seat cushion extends obliquely upward.

[0016] According to an embodiment, the seat cushion and the back cushion are integrally formed.

[0017] According to an embodiment, the seat cushion has a first surface and a second surface facing away from the first surface, the first surface of the seat cushion is configured to face an infant, and the first surface of the seat cushion includes an arc segment connected to the second end of the back cushion and a straight segment connected to the arc segment.

[0018] According to one embodiment, the seat cushion has a first surface and a second surface facing away from the first surface. The first surface of the seat cushion is configured to face an infant. The first surface of the seat cushion and the second surface of the seat cushion are inclined upward and forward, and the distance between the first surface of the seat cushion and the second surface of the seat cushion gradually increases in the direction upward and forward.

[0019] According to one embodiment, the connecting line of the first surface of the seat cushion and the connecting line of the second surface of the seat cushion form a first angle, and the first angle is 8° or more and 25° or less.

[0020] According to one embodiment, the first angle is 11°.

[0021] According to one embodiment, the seat cushion has a first surface and a second surface facing away from the first surface. The first surface of the seat cushion is configured to face an infant. The connecting line of the first surface of the back cushion and the connecting line of the first surface of the seat cushion form a second angle, and the second angle is 101° or more and 110° or less.

[0022] According to one embodiment, the second angle is 105°.

[0023] According to one embodiment, the seat cushion further has a third surface. The third surface is located at the second end of the seat cushion, and the third surface connects the first surface of the seat cushion and the second surface of the seat cushion.

[0024] According to one embodiment, the second surface of the seat cushion extends upward and forward beyond the first surface, and the third surface and the first surface are connected to each other in an arc transition.

[0025] According to one embodiment, the stopper portion has a convex shape extending upward and forward, and an outer surface of the stopper portion forms at least a part of a first surface of the seat cushion and a third surface of the seat cushion.

[0026] According to one embodiment, a thickness of a second end of the back cushion is a second thickness, and a thickness between one end of the facing segment close to the arc surface segment and a second surface of the seat cushion is a fourth thickness, and the fourth thickness is greater than the second thickness.

[0027] According to one embodiment, a thickness of a location adjacent to a third surface of the seat cushion between a first surface of the seat cushion and a second surface of the seat cushion is a fifth thickness, and the fifth thickness is greater than the fourth thickness.

[0028] According to one embodiment, a relief portion is provided in the seat cushion, and the relief portion is used to avoid a crotch belt assembly of a seat provided in the seat body.

[0029] According to one embodiment, the relief portion is a relief cut recessed rearward from the third surface of the seat cushion, the relief cut has a relief portion limit surface, and the relief portion limit surface is perpendicular to a second surface of the seat cushion, or the relief portion limit surface extends obliquely from front to rear and from top to bottom with respect to the second surface of the seat cushion.

[0030] In another aspect of the present application, a child seat including a seat body and a support structure provided on the seat body is provided, and the support structure includes a headrest for supporting a head of an infant and the above-described seat cushion structure.

[0031] According to one embodiment, the headrest has a first end and a second end in the vertical direction, the first end of the headrest is farther from the seat cushion structure than the second end of the headrest, an upward protrusion is provided at the first end of the headrest, and / or side protrusions are provided on both left and right sides of the headrest.

[0032] According to one embodiment, the headrest has a first surface and a second surface facing away from the first surface, the first surface is configured to face an infant, a transition portion is provided at the second end of the headrest, and the transition portion is bent downward toward the second surface of the headrest with respect to the other portion of the headrest.

[0033] According to one embodiment, the thickness of the transition portion of the headrest is a sixth thickness, and the sixth thickness is smaller than the first thickness of the first end of the back cushion away from the seat cushion.

[0034] According to one embodiment, when the bottom of the seat body is disposed on a horizontal plane, the second surface of the seat cushion forms a third angle with the horizontal plane, and the third angle is 25° or more and 55° or less.

[0035] According to one embodiment, the third angle is 40°.

[0036] In another aspect of the present application, a child seat including a seat body and a seat cushion structure is provided. The seat cushion structure is detachably disposed on the seat body. The seat cushion structure includes a back cushion and a seat cushion. The first surface of the seat cushion is configured to face an infant. When the bottom of the seat body is disposed on a horizontal plane, the angle between the first surface of the seat cushion and the horizontal plane is a fourth angle, and the fourth angle is 33° or more and 80° or less.

[0037] According to one embodiment, the fourth angle is 36° or more and 70° or less.

[0038] According to one embodiment, the fourth angle is 51°.

[0039] According to the seat cushion structure of the present application, it is possible to effectively avoid a situation where a riding infant slips and falls out of the protection of the headrest, and it is also possible to provide effective and safe support for the infant, keeping the infant's head and body in a straight line and avoiding the danger of the infant's head bending towards its body, and providing reliable and safe support for the infant.

Brief Description of the Drawings

[0040] The accompanying drawings are included in this specification to provide a further understanding of the present invention, incorporated herein, showing embodiments of the present invention, and used to explain the principles of the present invention together with the following description.

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Modes for Carrying Out the Invention

[0041] Hereinafter, embodiments will be described in detail with reference to the drawings. Although the present disclosure can easily make various modifications and alternative forms, specific embodiments are illustratively shown in the drawings. However, the present disclosure should not be construed as being limited to the embodiments disclosed herein. Rather, the present disclosure will cover all modifications, equivalents, and alternatives included within the spirit and scope of the embodiments.

[0042] In the following description, a child seat will be taken as an example. However, the seat cushion structure and support structure according to the present application can be similarly applied to other child devices that need to support infants and young children. For example, it can also be applied to children's chairs and various children's carts. As shown in FIG. 1, FIG. 1 is a schematic diagram showing a child seat 10 according to the present application. The child seat 10 can be attached to an automobile seat and includes a seat body 12. The seat body 12 is composed of two parts: a plastic body 12a and a foam body 12b. The plastic body 12a forms the frame body of the seat body 12, and the foam body 12b is provided inside the plastic body 12a and is provided to provide a more comfortable riding experience for the occupant.

[0043] Referring to FIG. 1, the seat body 12 can be divided into a backrest portion and a seat portion. The child seat 10 is detachably attached to an automobile seat and usually includes a handle 14 extending across both ends in the width direction of the seat body 12 to facilitate carrying. The child seat 10 shown in FIG. 1 is of a basket type that can be attached to a vehicle seat or cart for use and can also be lifted and used alone. Further, the child seat 10 further has a crotch belt assembly 16 connected to the seat portion of the seat body 12. The crotch belt assembly 16 includes a crotch belt and an engaging member connected to the crotch belt (the crotch belt assembly in the figure is schematically shown and the engaging member is not shown). The child seat 10 further has a shoulder belt and / or a waist belt (not shown), and a connecting member (not shown) on the shoulder belt and waist belt also engages with this engaging member. Thereby, the crotch belt and the shoulder belt can form a three-point seat belt, or the crotch belt, shoulder belt, waist belt and the belts can form a five-point seat belt.

[0044] As shown in FIGS. 1 and 2, FIG. 2 is a side view showing the support structure 20 according to the present application. The child seat 10 has a support structure 20. The support structure 20 includes a headrest 100 and a seat cushion structure 200. The headrest 100 is used to support the head of an infant, and the seat cushion structure 200 is detachably provided on the seat body 12 of the child seat 10 and is used to support the back and buttocks of the infant. For a small-sized infant, the seat cushion structure 200 can further support the feet (e.g., thighs) of the infant. The seat cushion structure 200 can provide better support for infants who are young and small in body size. FIG. 2 also schematically shows an infant supported by the support structure 20, with the head in contact with the headrest 100, the back and buttocks in contact with the seat cushion structure 200, and the head and back being substantially on the same straight line l.

[0045] The headrest 100 can move vertically along the backrest portion of the seat body 12 to adjust the height position of the headrest 100. The headrest 100 has a first surface 130 facing the head of the infant and a second surface 140 facing away from the first surface 130. The headrest 100 has a first end 110 and a second end 120. The first end 110 of the headrest 100 is farther from the seat cushion structure 200 than the second end 120 of the headrest. The second end 120 of the headrest 100 is closer to the seat cushion structure 200 than the first end 110 of the headrest. An upward protrusion 112 is provided at this first end 110. In any embodiment, side protrusions 113 (as shown in FIG. 1) are provided on both the left and right sides of the headrest 100. Both the upward protrusion 112 and the side protrusions 113 protrude outward with respect to the first surface 130 of the headrest 100. In this way, the head of the infant can be protected in all directions. A transition portion 122 that is bent downward toward the second surface 140 with respect to the other part of the headrest 100 is also provided at the second end 120 of the headrest 100. The portion of the transition portion 122 that is bent downward may be a downward arc segment, a downward inclined surface, or other downward curve segments or broken line segments.

[0046] As shown in FIGS. 1 and 2, the seat cushion structure 200 has a hardness sufficient to provide sufficient support for the infant, such as PU foam or EVA foam. The seat cushion structure 200 can be disposed inside an outer cloth cover (not shown). For example, the outer cloth cover covers the outside of the seat cushion structure 200, and the seat cushion structure is held inside the outer cloth cover via a fastener or a buckle or a buckle or a magnetic buckle or a collar or the like, facilitating the removal and washing of the outer cloth cover. The outer cloth cover is relatively soft and conforms to the skin, and the outer cloth cover can be made of materials such as a gourd cloth or a knitted cloth.

[0047] Referring to FIGS. 3, 4, and 5, FIG. 3 is a schematic diagram showing the seat cushion structure 200 according to the present application, FIG. 4 is a side schematic diagram showing the seat cushion structure 200 according to the present application, and FIG. 5 is a side cross-sectional view showing the seat cushion structure 200 according to the present application. The seat cushion structure 200 includes a back cushion 210 that supports the back of an infant and a seat cushion 220 that supports the buttocks of the infant or supports the legs (such as the thighs) of the infant. The back cushion 210 has a first end 213 and a second end 214, and the first end 213 of the back cushion 210 is separated from the seat cushion 220 with respect to the second end 214 of the back cushion 210.

[0048] The first surface 211 of the back cushion 210 is a surface facing the infant, and the second surface 212 of the back cushion 210 is a surface facing away from the infant. At least one of the first surface 211 and the second surface 212 of the back cushion 210 is provided with a push portion 215. The push portion 215 can lift the back cushion 210 after the seat cushion structure 200 is placed on the child seat 10, can lift the back of the infant better upward, can relatively widen the space between the head and the back of the infant, and can cause the head of the infant to be bent to its back, which can affect the breathing of the infant.

[0049] The push portion 215 may be provided in the longitudinal central region of the back cushion 210, or may be provided at other positions between the first end 213 and the second end 214 of the back cushion 210, and extends at least a part of the left - right width of the back cushion 210 along the left - right direction of the back cushion 210.

[0050] In this embodiment, the push portion 215 is provided on the side away from the first surface 211 of the back cushion 210, i.e., on the second surface 212 of the back cushion 210, and the outer surface of the push portion 215 forms at least a part of the second surface 212 of the back cushion 210, so that the push portion 215 can abut against the backrest of a child seat or a stroller and lift the first surface 211 of the back cushion 210 to abut against the back of an infant. Since the push portion 215 according to this embodiment protrudes in an arc shape, the second surface 212 of the back cushion 210 has an overall arc shape, and the approximate center part of this arc shape protrudes further toward the backrest of a child seat or a stroller. The back cushion 210 is formed so that the push portion 215 can be integrally molded, and the push portion 215 protrudes in a direction away from the first surface 211. The push portion 215 is not limited to the above-mentioned arc shape, and may be in other push portion shapes, such as a bump shape, which pushes the baby's back and reduces the angle at which the head is bent toward the body. In other embodiments, the push portion 215 may not be formed by integral molding with the back cushion 210, by molding the base of the back cushion 210 and the push portion 215 separately, and then bonding the push portion 215 to the base by gluing, locking, restraining, or the like, so that the base and the push portion together form the back cushion 210.

[0051] In this embodiment, the push portion 215 is distributed in the central region of the second surface 212 of the back cushion 210, so that the outer surface of the push portion 215 forms a part of the second surface 212 of the back cushion 210. In other embodiments, the outer surface of the push portion 215 can form the entire surface of the second surface 212 of the back cushion 210, or the push portion 215 is located on the first surface 211 of the back cushion 210, and the outer surface of the push portion 215 forms at least a part of the first surface 211 of the back cushion 210, so that the first surface 211 of the back cushion 210 can be lifted to push the back of the baby.

[0052] As shown in FIG. 4, the thickness of the first end 213 of the back cushion 210 is the first thickness T1, the thickness of the second end 214 of the back cushion 210 is the second thickness T2, and the thickness of the push portion 215 of the back cushion 210 is the third thickness T3. It is shown that the third thickness T3 is greater than the second thickness T2 and the third thickness T3 is also greater than the first thickness T1.

[0053] In this embodiment, the push portion 215 of the back cushion 210 increases the thickness of the material of the push portion 215 of the back cushion 210 and makes the push portion 215 convex, so that the first surface 211 of the back cushion 210 can press the back of the infant forward. The push portion 215 in this embodiment is also called the back thick portion. In other embodiments, due to the curved shape of the push portion 215, the back of the infant can be pushed. For example, the thickness of the material does not change, but a shape in which the push portion 215 is curved and bulged to form a protrusion can be realized. In this embodiment, the push portion 215 can widen the back of the infant, further widen the space between the head and the back, reduce the excessive curvature of the inside of the infant's back, and smooth the breathing of the infant. In other embodiments, the push portion 215 may push the back of the infant and may not be protruded so that the back and the head of the infant tend to be in a straight line.

[0054] As shown in FIG. 3, the back cushion 210 is provided with a plurality of ventilation holes 216. The ventilation holes 216 can extend from the first surface 211 of the back cushion 210 to the second surface 212 thereof. The ventilation holes 216 shown in the figure are circular, but in other embodiments, the ventilation holes 216 may be provided in other shapes such as elliptical, runway-shaped, stripe-shaped, square, rectangular, etc.

[0055] As shown in FIG. 3, in this embodiment, the back cushion 210 and the seat cushion 220 are integrally formed, and the first end 223 of the seat cushion 220 and the second end 214 of the back cushion 210 are integrally connected, and the connection portion presents a smooth curved shape. According to the embodiment illustrated with reference to FIG. 5, the integrally formed back cushion 210 and seat cushion 220 are arranged at an angle to each other, and in order to obtain an optimal riding comfort, the connection portion between the back cushion 210 and the seat cushion 220 is curved. Of course, in other embodiments, the back cushion 210 and the seat cushion 220 may be separately formed and arranged to be coupled to each other.

[0056] As shown in FIGS. 3 and 5, the seat cushion 220 has a first end 223 and a second end 224 opposite thereto. The first end 223 of the seat cushion 220 and the second end 214 of the back cushion 210 are connected to each other in an arc transition, and the second end 223 of the seat cushion 220 extends upward and forward. The seat cushion 220 has a first surface 221 for infants and a second surface 222 facing away from the first surface 221. As described above, since the transition between the back cushion 210 and the seat cushion 220 in this embodiment is an arc, the first surface 221 of the seat cushion 220 includes an arc surface segment 221a connected to the second end 214 of the back cushion 210 and a straight surface segment 221b connected to the arc surface segment 221a, and the straight surface segment 221b extends substantially straight upward and forward.

[0057] The seat cushion 220 further has a third surface 227 located at the second end 224 of the seat cushion 220, and the third surface 227 connects the first surface 221 of the seat cushion 210 and the second surface 222 of the seat cushion 210. As shown in FIGS. 3 and 5, the third surface 227 and the first surface 221 are connected to each other in an arc transition.

[0058] The seat cushion 220 also includes a stopper portion 226 that prevents a sitting infant from slipping down, so that the seat cushion 220 can support the infant, is advantageous for maintaining the head position of the infant, and avoids the infant's head from bending excessively backward while the infant is sleeping or the vehicle is rocking. In this embodiment, the entire seat cushion 220 is formed by integral molding. In other embodiments, the seat cushion 220 can also include a plurality of separate parts, and the stopper portion 226 is molded separately from other parts and connected to each other to jointly form the seat cushion 220.

[0059] As shown in FIGS. 3 and 5, in this embodiment, the stopper portion 226 is located at the second end 224 of the seat cushion 220 and has the form of a protrusion extending obliquely upward. Referring to FIGS. 3 and 5, the stopper portion 226 is located obliquely above the seat cushion 220, and the outer surface of the stopper portion 226 forms at least a part of the first surface 221 of the seat cushion 220 and the third surface 227 of the seat cushion 220. By the arc transition between the first surface 221 and the third surface 227, an older or larger-sized infant's leg (e.g., calf) can be placed on the third surface 227 to obtain comfortable support. The thickness between the first surface 221 and the second surface 222 of the seat cushion 220 gradually increases from the first end 223 of the seat cushion 220 toward the end adjacent to its third surface 227.

[0060] In this embodiment, the first end 223 of the seat cushion 220 and the second end 214 of the back cushion 210 are integrally connected. Referring to FIG. 4, the thickness at the first end 223 of the seat cushion 220, that is, the thickness between the end close to the back cushion 210 on the arc surface segment 221a of the first surface 221 of the seat cushion 220 and the second surface 222 of the seat cushion 220, is the second thickness T2 at the second end 214 of the back cushion 210. The thickness between the end close to the arc surface segment 221a on the straight surface segment 221b of the first surface 221 of the seat cushion 220 and the second surface 222 of the seat cushion 220 is the fourth thickness T4, and the fourth thickness T4 is greater than the second thickness T2. The thickness adjacent to the third surface 227 between the first surface 221 and the second surface 222 of the seat cushion 220 is the fifth thickness T5, and the fifth thickness T5 is greater than the fourth thickness T4. In this embodiment, the maximum thickness of the seat cushion 220 is the fifth thickness T5 described above.

[0061] As shown in FIG. 5, the thickness between the straight surface segment 221b of the first surface 221 and the second surface 222 also gradually increases from the end close to the back cushion 210 to the end close to the third surface 227. In this embodiment, the second surface 222 of the seat cushion 210 extends obliquely upward beyond the first surface 221, and the third surface 227 forms an inclined surface that transitions in an arc, connecting the first surface 221 and the second surface 222.

[0062] Referring to FIGS. 5 and 6, FIG. 6 is a partial side schematic view of the seat cushion 220 according to the present application. In order to provide a more comfortable riding experience in line with ergonomics and realize the positioning barrier function of the stopper portion 226, the angle between the connection line of the first surface 221 of the seat cushion 220 (i.e., a part of the outer surface of the stopper portion 226 in this embodiment) and the connection line of the second surface 222 of the seat cushion 220 is the first angle β, where the first angle β is 8° or more and 25° or less (i.e., 8° ≤ β ≤ 25°), preferably β = 11°. The angle between the connection line of the first surface 221 of the seat cushion 220 (i.e., a part of the outer surface of the stopper portion 226 in this embodiment) and the connection line of the first surface 211 of the back cushion 210 is the second angle α, and the second angle α is 101° or more and 110° or less (i.e., 101° ≤ α ≤ 110°), preferably α = 105°. When the bottom of the seat body 12 is supported on a horizontal plane, the angle formed between the second surface 222 of the seat cushion 220 and the horizontal plane is the third angle γ, and the third angle γ is 25° or more and 55° or less (i.e., 25° ≤ γ ≤ 55°), preferably γ = 40°. With the above configuration of the stopper portion 226, it can provide better holding power for infants and also improve the riding comfort, stability, and safety.

[0063] As shown in FIG. 6, when the bottom of the seat body 12 is supported on a horizontal plane, the angle between the first surface 221 of the seat cushion 220 and the horizontal plane is the fourth angle δ, where the fourth angle δ is 33° or more and 80° or less (i.e., 33° ≤ δ ≤ 80°), more specifically, the fourth angle δ is 30° or more and 70° or less (i.e., 30° ≤ δ ≤ 70°), preferably δ = 51°.

[0064] In this embodiment, both the first surface 221 and the second surface 222 of the seat cushion 220 transition in an arc shape. The first angle β can be defined by the extension line (i.e., the connection line) of the first surface 221 of the seat cushion 220 and the extension line (i.e., the connection line) of the second surface 222 of the seat cushion 220. The second angle α can be defined by the extension line (i.e., the connection line) of the first surface 221 of the seat cushion 220 and the extension line (i.e., the connection line) of the first surface 211 of the backrest cushion 210. As shown in FIG. 6, the bottom of the seat body 12 is in an arc shape. When the bottom of the seat body 12 is supported on a horizontal plane, the horizontal plane substantially contacts the bottom of the seat body 12. The third angle γ can be defined by the extension line of the second surface 222 of the seat cushion 220 and the tangent line of the bottom of the seat body 12. In other embodiments, the transition between the backrest cushion 210 and the seat cushion 220 does not have to be in an arc shape. If a clear angle origin is formed in a direct straight connection, the first angle β can be obtained more directly. Similarly, in other embodiments, the second angle α, the third angle γ, and the fourth angle δ can be directly defined according to the specific shape changes of the seat cushion structure 200 and the bottom of the seat body 12 without the need for extension lines.

[0065] In this embodiment, since the stopper portions 226 are substantially distributed in the tip region of the first surface 221 of the seat cushion 220, the outer surface of the stopper portions 226 forms a part of the first surface 221 of the seat cushion 220 (for example, the facing segment 221b of the first surface 221 of the seat cushion 220) and the third surface 227. In other embodiments, the outer surface of the stopper portions 226 can form the entire first surface 221 of the seat cushion 220 and / or the third surface 227 of the seat cushion 220.

[0066] As shown in FIGS. 3 and 5, a relief portion 225 for avoiding the crotch belt assembly 16 provided on the seat portion of the seat body 12 is provided at the second end 224 of the seat cushion 220. The relief portion 225 may be in the form of a relief notch recessed inward from the third surface 227 of the seat cushion 220 as shown in FIGS. 3 and 5. Of course, the relief portion 225 may be in the form of a relief hole. By passing the crotch belt assembly 16 through the relief portion 225, the position of the seat cushion structure 200 can be limited and stopped, and the sliding down of the seat cushion structure 200 can be avoided. Thereby, through the cooperation of the relief portion 225 and the crotch belt assembly 16, the seat cushion structure 200 can better receive the infant and reduce the risk of the infant sliding down.

[0067] As in the embodiment shown in FIG. 3, the relief portion 225 is a relief cut, and the relief portion limit surface 225a is substantially perpendicular to the second surface 222 of the seat cushion 220. As shown in FIG. 7, FIG. 7 is a partial cross-sectional view showing another embodiment of the relief portion 225 according to the present application. In this embodiment, the relief portion limit surface 225a is inclined downward and inward (that is, from front to back, from top to bottom). When the crotch belt abuts against the relief portion limit surface 225a, the biasing direction of the crotch belt with respect to the relief portion limit surface 225a can be directed toward the headrest 100, which is advantageous for holding the seat cushion structure 200 and avoiding the sliding down of the seat cushion structure 200.

[0068] The headrest 100 and the seat cushion structure 200 as described above can support the entire body of the infant and relatively extend the back and head of the infant (that is, the back and the head tend to extend in a straight line rather than the head bending excessively towards the back), and can smooth the breathing of the infant. In this embodiment, as shown in FIG. 2, the thickness of the first end 213 of the back cushion 210 is the first thickness T1, the thickness of the transition portion 122 of the headrest 100 is the sixth thickness T6, and the first thickness T1 is greater than the sixth thickness T6. Thereby, even when the head of the infant is located at a low position of the headrest 100, the back of the infant can be lifted upward with respect to the head, and after the back of the infant is lifted, it helps to extend the head in a direction away from the back. Furthermore, the head in contact with the headrest 100 of the infant and the back in contact with the back cushion 210 are located substantially in the same straight line, and the transition between the head and the back is smooth, reducing the risk of suffocation of the infant. Furthermore, this first thickness T1 is smaller than the above-mentioned fifth thickness T5 (reference shown in FIG. 4).

[0069] Note that at each position of the seat cushion structure 200, since the thickness direction is the direction of the supporting force provided by the seat cushion structure 200 at that position, when the shape of the seat cushion structure 200 is curved, the thickness direction at each position also changes. For example, the thickness directions of the first thickness T1 and the second thickness T2 in FIGS. 3, 4, and 5 are not parallel.

[0070] In other embodiments, regardless of the thickness of the seat cushion 220 and whether it has a protruding stopper portion, when the seat cushion structure 200 cooperates with the seat body 12 and the inclination of the first surface 221 of the seat cushion 220 with respect to the horizontal plane at the bottom of the seat body 12 reaches a certain angle, an infant can sit on the seat cushion 220, be received by the first surface 221 with a certain inclination, and play a role in preventing the infant from slipping off. For example, on the inner surface of the seat portion of the seat body (i.e., the surface that contacts the second surface of the seat cushion), there is a portion that bulges inward. When the seat cushion structure 200 is arranged in the seat body 12 and the bottom of the seat body 12 is supported on a horizontal plane, the angle formed by the first surface 221 of the seat cushion 220 and this horizontal plane is the aforementioned fourth angle δ, where the fourth angle δ is 33° or more and 80° or less (i.e., 33° ≤ δ ≤ 80°).

[0071] In this embodiment, the headrest 100 and the seat cushion structure 200 are integrally formed separately. The headrest 100 is connected to the backrest portion of the child seat 10 and can be adjusted in position with respect to the backrest portion. The seat cushion structure 200 is separately arranged on the seat body 12. In other embodiments, both the headrest 100 and the seat cushion structure 200 may be detachable structures independent of the seat body 12. For example, the headrest 100 and the seat cushion structure 200 may be accommodated in different spaces of the same outer cloth cover such that the support structure 20 is detachably arranged in the seat body 12. Alternatively, the headrest 100 and the seat cushion structure 200 may be accommodated in different outer cloth covers respectively, and the headrest 100 and the seat cushion structure 200 may be connected by structures such as magic tapes, buttons, fasteners, or the headrest 100 and the seat cushion structure 200 may be integrally formed.

[0072] Referring to FIGS. 8 and 9, FIG. 8 is a schematic view showing the seat cushion structure 200' of the comparative embodiment. FIG. 9 is a schematic view showing the support structure 20' of the comparative embodiment. The seat cushion structure 200' of this comparative embodiment is not provided with a push portion and a stopper portion, the entire surface for infants of the seat cushion structure 200' is flat, and no transition portion is provided on the headrest 100'. Therefore, when the infant is sleeping or the child seat is swaying with the movement of the vehicle, the infant is very likely to slip off, and at the same time, the head of the infant also moves downward. As shown in FIG. 9, the head of the infant bends toward the back, which is likely to affect the smoothness of the infant's breathing.

[0073] When the support structure 20 of the present application is provided on the seat body 12 of the child seat 10, the headrest 100 can support the head of the infant, the seat cushion structure 200 can support the back and buttocks of the infant. At the same time, a transition portion 122 is provided at the second end 120 of the headrest 100, and a push portion 215 is provided on the back cushion 210 of the seat cushion structure 200. Therefore, the entire support structure 20 can better support the body of the infant, its head and body tend to stretch, are located substantially in a straight line, and the risk of suffocation caused by the head being bent toward the back can be avoided. In addition, a stopper portion 226 is provided on the seat cushion 220 of the seat cushion structure 200, which can limit the position of the infant, avoid the infant from slipping off, and provide a more comfortable and safe supporting force for the infant sitting on it. The escape portion 225 provided on the seat cushion 220 of the seat cushion structure 200 allows the crotch belt assembly 16 of the child seat 10 to pass through, can position the seat cushion structure 200, further avoid the infant from slipping off, and can provide safe, comfortable and reliable support for the infant.

[0074] It is necessary to explain that when the infant is sitting horizontally normally, the back of the infant is relatively upward. After the infant slides down, the back of the infant also drops downward, and there is a certain range of movement for the back of the infant. The distribution range of the push part in the back cushion of the present application can be set to correspond to the movement range of the back of the infant so that the head and body of the infant always tend to stretch (that is, when the infant is lying horizontally and sliding down normally, the head and body tend to stretch) and are located almost in a straight line. Of course, in other embodiments, if it can be ensured by other structures that the breathing of the infant is smooth when the infant is lying horizontally normally, the distribution range of the push part in the back cushion of the present application can correspond only to the position range after the back of the infant drops.

[0075] The features of the present invention can be embodied in various forms without departing from the characteristics of the present invention. Therefore, unless otherwise specifically stated, the above embodiments should be broadly interpreted as being within the scope limited by the appended claims. Accordingly, it should also be understood that all modifications and variations included within the scope and limitations of the claims, or within the scope and limitations of an equivalent scheme of the scope, should be included in the appended claims.

Explanation of Reference Numerals

[0076] 10 Child seat 12 Seat body 12a Plastic body 12b Foam body 14 Handle 16 Crotch belt assembly 20, 20 Support structure’ 100, 100’ Headrest 110 First end 112 Upper protrusion 113 Side protrusion 120 Second end 122 Transition part 130 First surface 140 Second surface 200, 200’ Seat cushion structure 210 Back cushion 211 First surface 212 Second surface 213 First end 214 Second end 215 Cushion part 216 Vent hole 220 Seat cushion 221 First surface 222 Second surface 227 Third surface 221a Arc surface segment 221b Straight surface segment 223 First end 224 Second end 226 Stopper part 225 Relief part 225a Relief part limit surface l Infant's body center line β First angle α Second angle γ Third angle δ Fourth angle 1 Straight line T1 First thickness T2 Second thickness T3 Third thickness T4 Fourth thickness T5 Fifth thickness T6 Sixth thickness

Claims

1. A seat cushion structure to be applied to a seat body of a child seat, The seat cushion structure includes a back cushion and a seat cushion, the back cushion is used to support the back of an infant, the back cushion having a first surface and a second surface opposite to the first surface, the first surface being configured to face the infant; The seat cushion is used to support the buttocks of an infant, The back cushion is provided with a push portion, and the push portion causes a first surface of the back cushion to push against the back of the baby so that the back and head of the baby tend to be positioned in the same straight line; and / or The seat cushion is provided with a stopper portion, which prevents the baby from sliding downward. A seat cushion structure characterized by:

2. The push portion is located on a first surface or a second surface of the back cushion, and an outer surface of the push portion forms at least a part of the first surface of the back cushion or at least a part of the second surface of the back cushion.

2. The seat cushion structure according to claim 1.

3. The back cushion has the push portion integrally formed therewith, and the outer surface of the push portion forms at least a portion of the second surface of the back cushion.

2. The seat cushion structure according to claim 1.

4. The push portion is a protrusion that protrudes in a direction away from the first surface of the back cushion.

4. The seat cushion structure according to claim 3.

5. The back cushion has a first end and a second end in a vertical direction, the first end of the back cushion is farther from the seat cushion than the second end of the back cushion, the thickness of the first end of the back cushion is a first thickness, the thickness of the second end of the back cushion is a second thickness, and the pressing thickness of the back cushion is a third thickness, the third thickness being greater than the second thickness.

2. The seat cushion structure according to claim 1.

6. the third thickness is greater than the first thickness; Or, The push portion is located at a central position between a first end and a second end of the back cushion, and extends across at least a portion of the left-right width of the back cushion along the left-right direction of the back cushion.

6. The seat cushion structure according to claim 5.

7. The back cushion is provided with an air vent, the air vent extending from a first surface of the back cushion to a second surface of the back cushion.

2. The seat cushion structure according to claim 1.

8. The seat cushion has a first surface and a second surface facing away from the first surface, the first surface of the seat cushion is configured to face an infant, the first surface of the seat cushion and the second surface of the seat cushion are inclined toward the front and upper side, and a distance between the first surface of the seat cushion and the second surface of the seat cushion gradually increases in the direction toward the front and upper side.

2. The seat cushion structure according to claim 1.

9. The connecting line of the first surface of the seat cushion and the connecting line of the second surface of the seat cushion form a first angle, the first angle being equal to or greater than 8° and equal to or less than 25°.

9. The seat cushion structure according to claim 8.

10. The seat cushion has a first surface and a second surface facing away from the first surface, the first surface of the seat cushion is configured to face the baby, and a connecting line of the first surface of the back cushion and a connecting line of the first surface of the seat cushion form a second angle, the second angle being equal to or greater than 101° and equal to or less than 110°.

2. The seat cushion structure according to claim 1.

11. The seat cushion has a first end and an opposing second end, the first end of the seat cushion and the second end of the back cushion are connected to each other by a circular transition, and the second end of the seat cushion extends forward and upward; the seat cushion has a first surface and a second surface opposite the first surface, the first surface of the seat cushion is configured to face the infant, the first surface of the seat cushion includes an arcuate segment connected to the second end of the back cushion and a face segment connected to the arcuate segment; the seat cushion further has a third surface, the third surface being located at a second end of the seat cushion, the third surface connecting the first surface of the seat cushion and the second surface of the seat cushion; A thickness of the second end of the back cushion is a second thickness, and a thickness between an end of the face segment near the arc surface segment and a second surface of the seat cushion is a fourth thickness, the fourth thickness being greater than the second thickness.

2. The seat cushion structure according to claim 1.

12. a thickness of the second end of the back cushion is a second thickness, a thickness between an end of the face segment close to the arc surface segment and a second surface of the seat cushion is a fourth thickness, the fourth thickness being greater than the second thickness; A thickness between the first surface of the seat cushion and the second surface of the seat cushion adjacent a third surface of the seat cushion is a fifth thickness, the fifth thickness being greater than the fourth thickness.

12. The seat cushion structure according to claim 11.

13. A child seat including a seat body and a support structure provided on the seat body, The support structure includes a headrest for supporting the head of an infant and a seat cushion structure according to any one of claims 1 to 12. A child seat characterized by the above.

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