Seat cushion and infant carrier with seat cushion

Abstract

This application discloses an infant carrier comprising a backrest, a headrest having shoulder strap holes, and shoulder straps extending through the shoulder strap holes, wherein the rear side of the headrest has a first connecting member, and the front side of the backrest has a second connecting member, and the first connecting member is height-adjustable to the second connecting member. The infant carrier of this application allows for adjustment of the height of the headrest and the height of the shoulder straps simultaneously.

Description

Technical Field

[0001] The present application relates to the technical field of infant carriers, and particularly to an infant carrier having a structure for adjusting the height of a headrest and an infant carrier equipped with a seat cushion.

Background Art

[0002] Infant carriers have already become essential for taking children out. Conventional infant carriers are provided with a headrest whose height can be adjusted in order to adapt to growing children. However, when adjusting the height of the headrest of a conventional infant carrier, the height of the shoulder straps for restraining the child does not change. Therefore, when a child with a tall stature uses a conventional infant carrier, it is impossible to properly align their shoulders with the shoulder straps.

[0003] Moreover, for conventional infant carriers, the method of adjusting the height of the headrest lacks flexibility, the connection method is limited, and the operation is inconvenient.

[0004] Child safety seats, infant or child carriers such as baby strollers, usually have a seat cushion structure (sometimes called a "small seat cushion") to ensure the size suitability and comfort when an infant or child sits. Such a small seat cushion can be attached to a child safety seat, for example, by inserting straps or attaching buckles during use, and can be removed from the child safety seat for cleaning or replacement. Also, in order to ensure the comfort of a child's head during use, the small seat cushion usually has a headrest part for the child to rest while sitting.

[0005] Therefore, it is necessary to develop an infant carrier that can solve the above problems.

Summary of the Invention

[0006] The objective of this invention is to provide an infant carrier that allows for simultaneous adjustment of the height of the headrest and the height of the shoulder straps.

[0007] This invention provides a seat cushion for installation in an infant carrier or child carrier that can solve the problem of the inconvenience of adjusting the height of the headrest portion of a seat cushion product in the prior art.

[0008] To achieve the above objective, the present invention provides an infant carrier comprising a backrest and a headrest, wherein the backrest has a first connecting member, and the headrest has a second connecting member, the first connecting member being slidably positioned relative to the second connecting member to adjust the height of the headrest relative to the backrest, the first connecting member being an adjustment strap, and the second connecting member being an adjustment member having a plurality of adjustment holes, the adjustment strap extending through the plurality of adjustment holes, and the adjustment member being detachably attached to the headrest.

[0009] In one embodiment, the infant carrier further comprises shoulder straps, the headrest has shoulder strap holes, the shoulder straps are connected to the backrest and extend through the shoulder strap holes in the headrest.

[0010] In one embodiment, the adjustment member includes a connecting strap and a connecting sheet, wherein one end of the connecting strap is fixed to the headrest and the other end has the connecting sheet, the adjustment strap has a buckle, one end of the adjustment strap is fixed to the backrest and the other end is fixedly or detachably connected to the backrest, the buckle is movably provided on the adjustment strap, the connecting strap extends through the buckle, and the connecting sheet cooperates with the buckle to prevent the headrest from separating from the backrest.

[0011] In one embodiment, the headrest has two adjustment members arranged side by side, and the two adjustment members are fixed to the headrest on the sides closest to each other.

[0012] In one embodiment, the headrest includes a pocket into which a portion of the adjustment member is inserted, and the headrest includes a fixing strap, one end of which is fixed to the headrest and the other end of which is detachably connected to a first surface of the adjustment member, the one end of which is located in the pocket, and the portion of which is connected to the pocket by a button.

[0013] In one embodiment, the headrest is provided with a connecting strap, a passage is formed between the connecting strap and the headrest, the adjustment member is removably extended into the passage, and the adjustment holes are located on both sides of the connecting strap.

[0014] In one embodiment, the headrest is further provided with a steering member, and the connecting strap has a fixed end connected to the headrest and a free end detachably attached to the headrest, the free end extending through the steering member and detachably attached to the headrest, thereby forming the passage surrounding the adjustment member and the steering member between the fixed end and the free end of the connecting strap.

[0015] In one embodiment, the free end of the connecting strap is detachably attached to the headrest by one of a hook-and-loop tape, a button, or a snap-fit.

[0016] In one embodiment, the steering member is a flexible rope with both ends fixed to the headrest, the connecting strap surrounds the connection portion of the adjustment member and the steering member, and the number of connecting straps is less than the number of adjustment straps.

[0017] In one embodiment, the adjustment strap is inserted through one of the adjustment holes between the adjustment member and the headrest, and the adjustment member is inserted through the other adjustment hole, thereby causing the adjustment member to apply a holding force to the adjustment member, with one end of the adjustment strap fixed to the backrest, and the other end of the adjustment strap being detachably connected to the backrest via a connecting member, or each end of each adjustment strap being detachably connected to a connecting ring via a connecting member.

[0018] In one embodiment, the connecting member includes a first arm extending through the connecting ring and a second arm extending through the end of the adjustment strap, wherein a notch is formed between the first arm and the second arm, the first arm is provided with a first stopper rib at the end of the notch to prevent the adjustment strap from detaching from the notch, and the second arm is provided with a second stopper rib at the end of the notch to prevent the adjustment strap from detaching from the notch, or the first arm is pivotably connected to the second arm, and the notch can be opened and closed by pivoting between the first arm and the second arm.

[0019] In one embodiment, the adjustment member includes a connecting portion and a plurality of positioning portions connected to the connecting portion, each of the plurality of positioning portions having at least two adjustment holes, a plurality of adjustment straps corresponding to the plurality of positioning portions are provided in parallel on the backrest, and each of the plurality of adjustment straps extends sequentially through each adjustment hole of the corresponding positioning portion, the connecting portion of the adjustment member is fixedly connected to the headrest, and the positioning portions are pivotable relative to the connecting portion.

[0020] In one embodiment, the upper edge of the backrest is formed as an incline to form a gap between the headrest and the backrest for holding the headrest, and the free end of the connecting strap is detachably attached to the upper edge of the headrest.

[0021] In another embodiment, the present invention provides a seat cushion applicable to an infant carrier, the seat cushion comprising a seat cushion body, a headrest portion, and a positioning structure including a first positioning portion provided on the seat cushion body and a second positioning portion provided on the headrest portion, wherein the first positioning portion and the second positioning portion are movably connected to each other to position the headrest portion at multiple positions relative to the seat cushion body, the first positioning portion of the positioning structure being a slide adjustment strap and the second positioning portion of the positioning structure being a connecting component, or the first positioning portion of the positioning structure being a connecting component and the second positioning portion of the positioning structure being a slide adjustment strap, the slide adjustment strap engaging with the connecting component slidably relative to each other to movably connect the headrest portion to the seat cushion body, and the headrest portion can be positioned at different positions relative to the seat cushion body by cooperation between the slide adjustment strap and the connecting component. Thus, the seat cushion of the present invention not only has a simple structure, but also enables continuous adjustment and positioning of the headrest portion relative to the seat cushion body.

[0022] In one embodiment, the connecting component has a connecting portion fixed to the seat cushion body or the headrest portion, and at least one positioning portion connected to the connecting portion, wherein the positioning portion is movably connected to the slide adjustment strap and pivotally movable relative to the connecting portion.

[0023] In one embodiment, one end of the headrest portion has a protruding headrest neck portion, the second positioning portion is located on the headrest neck portion, the seat cushion body has a recess corresponding to the headrest neck portion, and when adjusting the position of the headrest portion, the headrest neck portion can slide within the recess of the seat cushion body.

[0024] In one embodiment, the headrest portion includes a back cover layer surrounding the neck portion of the seat cushion body, and the headrest portion is sleeved to the neck portion of the seat cushion body. This increases the stability of the connection between the headrest portion and the seat cushion body.

[0025] In one embodiment, a lifting strap is provided at the end of the neck portion of the seat cushion body, a first opening is provided at the first end of the headrest portion for extending through the neck portion of the seat cushion body, and a second opening is provided at the second end of the headrest portion for extending through the lifting strap, with the dimensions of the first opening being larger than the dimensions of the second opening.

[0026] In one embodiment, the length of the lifting strap is configured such that the lifting strap always extends through the second opening when the headrest is positioned in any desired location, and the lifting strap is made of a rigid material.

[0027] In one embodiment, the connecting component has two or more through holes, the slide adjustment strap extends through the through holes, and the positioning of the headrest part is realized by the friction between the slide adjustment strap and the wall of the through hole. The connecting component includes a pair of the positioning parts arranged at a predetermined distance in the horizontal direction, the slide adjustment strap includes a pair of the slide adjustment straps arranged in parallel at the predetermined distance, each of the slide adjustment straps has two end parts fixed to one of the seat cushion body or the headrest part, and an overhang part located between the two end parts. Each of the positioning parts is fixed to the other of the seat cushion body or the headrest part, and the overhang parts of the pair of slide adjustment straps respectively extend through a corresponding one of the pair of positioning parts.

[0028] In one embodiment, the slide adjustment strap is a braided strap, the slide adjustment strap has a plurality of convex line structures extending perpendicular to the length direction of the slide adjustment strap, and the connecting component is a plastic sheet.

[0029] In one embodiment, a rigid sheet is provided along the moving direction of the headrest part at the neck part of the seat cushion body.

[0030] In one embodiment, the rigid sheet has a shoulder strap groove for passing the shoulder strap, and the seat cushion body has a thigh strap through hole for passing the thigh strap.

[0031] The height of the headrest of the carrier for infants of the present application can be adjusted, and the headrest is provided with shoulder strap holes, and the height of the shoulder straps can be adjusted synchronously.

[0032] The headrest of the infant carrier of the present application is removable from the infant carrier to facilitate maintenance or replacement.

[0033] In this invention, an adjustment strap is provided on the backrest of the infant carrier, and the headrest, which is connected to the adjustment member, is slidably connected to the adjustment strap via the adjustment member, thereby enabling height adjustment of the headrest. Therefore, the connection structure between the headrest and the backrest in this invention is simple and easy to operate.

[0034] In this invention, a connecting strap is provided on the headrest, and the connecting strap is detachably connected to an adjustment member and secured with a hook-and-loop tape, allowing the headrest to be easily removed. Therefore, the connection structure between the headrest and the backrest in this invention is simple and easy to operate. [Brief explanation of the drawing]

[0035] The various purposes, features, and advantages of this disclosure will become more apparent by considering the following detailed description in conjunction with the drawings of preferred embodiments of this disclosure. The accompanying drawings are illustrative of this disclosure and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always indicate the same or similar parts. [Figure 1] This is a schematic diagram of the infant carrier in which the headrest is positioned low. [Figure 2] This is a schematic diagram of the infant carrier in which the headrest is positioned high. [Figure 3] This is a schematic diagram of a first embodiment of the infant carrier in which the headrest of the present invention is located separately from the backrest. [Figure 4] This is a schematic diagram of a second embodiment of the infant carrier of the present invention, in which the headrest and shoulder straps have been removed. [Figure 5] This is a schematic rear view of the headrest of a second embodiment of the infant carrier of the present invention. [Figure 6] This is a schematic diagram of a third embodiment of an infant carrier, in which the outer contour of the headrest of the present application is shown by a dashed line, and the components obscured by the headrest are shown. [Figure 7]This is a schematic rear view of the headrest of a third embodiment of the infant carrier of the present invention. [Figure 8] This is a schematic rear view of the headrest of the fourth embodiment of the infant carrier of the present invention. [Figure 9] This is a schematic rear view of the headrest of the fifth embodiment of the infant carrier of the present invention. [Figure 10] This is a schematic rear view of the headrest of the sixth embodiment of the infant carrier of the present invention. [Figure 11] This is a schematic rear view of the headrest of the seventh embodiment of the infant carrier of the present invention. [Figure 12] This is a schematic rear view of the headrest of the eighth embodiment of the infant carrier of the present invention. [Figure 13] This is a schematic rear view of the headrest of the ninth embodiment of the infant carrier of the present invention. [Figure 14] This is a schematic rear view of the headrest of the tenth embodiment of the infant carrier of the present invention. [Figure 15] This is a schematic diagram of an eleventh embodiment of the infant carrier in which the headrest of the present invention has been removed. [Figure 16] This is a schematic rear view of the headrest of the 11th embodiment of the infant carrier of the present invention. [Figure 17] This is a schematic side view of the 11th embodiment of the infant carrier of the present invention. [Figure 18] This is a schematic diagram of a twelfth embodiment of the infant carrier in which the headrest of the present invention has been removed. [Figure 19] This is a schematic side view of the twelfth embodiment of the infant carrier of the present invention. [Figure 20] This is a schematic rear view of the headrest of the twelfth embodiment of the infant carrier of the present invention. [Figure 21] This is a schematic diagram of a thirteenth embodiment of the infant carrier in which the headrest of the present invention has been removed. [Figure 22] This is a schematic front view showing a seat cushion for a child safety seat in which the headrest portion according to the 14th embodiment of the present application is in a first position. [Figure 23]This is a schematic rear view of the seat cushion according to the 14th embodiment in the state shown in Figure 22. [Figure 24] This is a schematic front view of a seat cushion in which the headrest portion is in a second position, according to the 14th embodiment of the present application. [Figure 25] This is a schematic rear view of the seat cushion according to the 14th embodiment in the state shown in Figure 24. [Figure 26] This is a schematic front view showing a seat cushion for a child safety seat in which the headrest portion according to the 15th embodiment of the present application is located in an intermediate position between the first position and the second position. [Figure 27] This is a schematic front view of an individual seat cushion body according to the 14th embodiment of the present application. [Figure 28] This is a schematic rear view of an individual seat cushion body according to the 14th embodiment. [Figure 29] A schematic diagram of the neck portion of a seat cushion body including a neck portion reinforcing plate according to the 16th embodiment of the present application is shown. [Figure 30] A schematic diagram of the neck portion of a seat cushion body including a neck portion reinforcing plate according to the 17th embodiment of the present application is shown. [Figure 31] A schematic diagram of the neck portion of a seat cushion body including a neck portion reinforcing plate according to the 18th embodiment of the present application is shown. [Figure 32] This is a schematic front view of an individual headrest portion according to an embodiment of the present invention. [Figure 33] Figure 32 is a schematic rear perspective view of the headrest portion according to an embodiment of the present application. [Figure 34] This is a schematic diagram showing the cooperative mechanism between the neck portion of the seat cushion body according to one embodiment of the present invention and the headrest portion shown in Figure 33. [Figure 35] Figure 34 is a schematic diagram showing the individual cooperative relationships of the positioning structures. [Figure 36] This is a schematic diagram of the neck portion of the seat cushion body according to the 19th embodiment of the present application. [Figure 37] This is a schematic front view of the headrest portion according to the 20th embodiment of the present application. [Figure 38]This is a schematic front view of the headrest portion according to the 21st embodiment of the present application. [Figure 39] These are schematic front views of the seat cushion body according to the 20th and 21st embodiments. [Figure 40] Figure 39 is a schematic diagram of the back of the seat cushion body. [Figure 41] A schematic diagram shows an infant carrier including the child safety seat of the present invention and a seat cushion according to an embodiment of the present invention in which the headrest portion is in a first position. [Figure 42] Figure 41 schematically shows the infant carrier with the headrest portion of the seat cushion raised to the second position. [Modes for carrying out the invention]

[0036] To more clearly explain the overall concept of this application, it will be described in detail below with reference to the attached drawings.

[0037] While the following description provides many specific details to fully understand this disclosure, this disclosure may be implemented in forms other than those described herein, and therefore the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0038] Furthermore, in the description of this application, directions or positional relationships indicated by terms such as "center," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "axial direction," "radial direction," and "circumferential direction" are based on the directions or positional relationships shown in the drawings and are used solely for the purpose of simplifying the description of this application. They do not indicate or imply that the referred device or component has a specific direction or must be constructed and operated in a specific direction, and therefore cannot be understood as limitations on this application.

[0039] In this application, unless otherwise specified, terms such as "attachment," "connection," "joining," and "fixing" should be understood in a broad sense. For example, a connection may be fixed, detachably connected, integrated, directly connected, indirectly connected via an intermediate medium, or be an internal communication or interaction relationship between two components. However, when describing a direct connection, it means that the connection relationship is not established between the two bodies to be connected by an excessive structure, but rather the whole is formed by the connection structure alone. A person skilled in the art will be able to understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] In this application, unless otherwise specified, the position of a first feature "above" or "below" a second feature means that the first and second features may be in direct contact, or they may be indirectly in contact through an intermediate medium. In this specification, any reference to the terms "one embodiment," "several embodiments," "example," "specific example," or "several examples" means that the specific features, structures, materials, or properties described in that embodiment or example are included in at least one embodiment or example of this application. In this specification, a schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials, or properties described may be combined in an appropriate manner in any one or more embodiments or examples.

[0041] This application provides an infant carrier 1 in which an infant or child sits. The infant carrier 1 may be a baby cradle, a child safety seat, a stroller, or other infant carrier. A first embodiment of the present invention will be described below.

[0042] As shown in Figures 1 and 2, the infant carrier 1 may include a backrest 50, a headrest 10 with shoulder strap holes 110, and a safety belt 2 attached to the seat shell 1. The safety belt 2 may include shoulder straps 20 and adjustment straps 21. The adjustment straps 21 are not necessarily required and may be removable. The shoulder straps 20 can extend through the shoulder strap holes 110. The back of the headrest 10 may include a first connecting member 30, and the front of the backrest 50 may include a second connecting member 40. The first connecting member 30 is attached to the second connecting member 40 in a height-adjustable manner.

[0043] There may be two shoulder straps 20. The two shoulder straps 20 correspond to the two shoulders of the child. The front of the two shoulder straps 20 are detachably engaged with the crotch strap 23 of the infant carrier, for example, via a buckle 25, thereby preventing outward pulling or inward retraction of the adjustment strap 21 when locked. The structure of the safety belt 2 and the buckle 25 is known in the prior art and will not be described here.

[0044] The backrest 50 extends almost vertically. Alternatively, the backrest 50 may be slightly tilted backward. The headrest 10 may be positioned higher on the backrest 50 to support and protect the occupant's head. The shoulder straps 20 may be formed in two and positioned symmetrically in front of the backrest. The lower end of the shoulder straps 20 may be fixed to the seat cushion of the infant carrier 1, while the upper end of the shoulder straps 20 may be fixed to the backrest 50 of the infant carrier 1. The shoulder straps 20 are slidable within the shoulder strap holes 110 to adjust the length exposed in front of the infant carrier 1. The shoulder straps 20 can restrain the occupant's shoulders and protect the occupant's safety.

[0045] The shoulder strap holes 110 can be provided at a low position on the headrest 10 so as not to interfere with the headrest 10's support of the occupant's head. In this embodiment, the first connecting member 30 may be either a male hook-and-loop tape or a female hook-and-loop tape, and the second connecting member 40 may be the other of the male hook-and-loop tape and the female hook-and-loop tape. A hook-and-loop tape is usually composed of two parts; those with hooks formed on their surface are usually called male hook-and-loop tapes, and those with annular shapes formed on their surface are usually called female hook-and-loop tapes. As shown in Figure 3, the first connecting member 30 and the second connecting member 40 may be formed as squares of equal area, and the side lengths of the squares may be, for example, 5 cm, 6 cm, 7 cm, 8 cm, 9 cm, 10 cm, or greater than 10 cm. The first connecting member 30 and the second connecting member 40 may be formed as squares of different sizes. For example, the area of ​​the first connecting member 30 may be smaller than the area of ​​the second connecting member 40. Specifically, the length of the sides of the first connecting member 30 may be, for example, half the length of the sides of the second connecting member 40. The present invention is not limited thereto. The first connecting member 30 and the second connecting member 40 may also be of other shapes, such as rectangles, ellipses, circles, etc.

[0046] As shown in Figures 1 and 2, when the headrest 10 is installed in a low position or a high position, shoulder strap holes 110 are provided in the headrest 10, and the upper end of the shoulder strap 20 moves along with the movement of the headrest 10, so that the position of the shoulder strap 20 can also be adjusted according to the change in the rider's height. With this configuration, the infant carrier 1 has better adaptability and is easy to operate.

[0047] The second embodiment of the present application will be described below.

[0048] Referring to Figures 4 and 5, the first connecting member 30 may be an adjustment member 310. The adjustment member 310 may have a plurality of adjustment holes 311 that penetrate through it. The adjustment member 310 may be a PE plate. As shown in Figure 5, the adjustment member 310 has four adjustment holes 311, and each set of two adjustment holes 311 can be formed in a row. The adjustment member 310 may have any other number of adjustment holes 311. The adjustment member 310 engages with the rear surface of the headrest 10 at its outer edge and contacts and holds the headrest 10 only at an intermediate position (for example, the position where the adjustment holes 311 are located), and may have a certain gap between the intermediate position and the headrest 10 when biased.

[0049] The second connecting member 40 may be an adjustment strap 410. One end of the adjustment strap 410 may be fixed to the backrest 50, and the other end of the adjustment strap 410 may be fixedly or detachably connected to the backrest 50. If the other end of the adjustment strap 410 is detachably connected to the backrest 50, the headrest 10 can be removed from the backrest 50 to facilitate operations such as cleaning, maintenance, and replacement. The adjustment strap 410 penetrates between the adjustment member 310 and the headrest 10 through one of the adjustment holes 311 and protrudes through the adjustment member 310 through the other adjustment hole 311, thereby allowing the adjustment member 310 to exert a holding force on the adjustment strap 410. If there are more than two (e.g., four) adjustment holes 311 in each row, the adjustment strap 410 can sequentially penetrate and protrude through each adjustment hole 311 in a row to change the magnitude of the holding force. As shown in Figure 4, the adjustment straps 410 may be installed in parallel in pairs (although only one adjustment strap 410 is shown in Figure 5, adjustment straps 410 may also be provided in the two adjustment holes 311 on the right side), and the present invention is not limited thereto. One or more adjustment straps 410 may be provided.

[0050] Referring to Figure 5, when the adjustment strap 410 moves in and out of the adjustment hole 311, the adjustment strap 410 receives a holding force (or clamping force) from the adjustment member 310. Optionally or additionally, the width of the adjustment hole 311 is set to approximate the thickness of the adjustment strap 410 so that the adjustment strap 410 receives a holding force from the adjustment hole 311. The portion of the adjustment strap 410 located between the adjustment member 310 and the headrest 10 also receives a holding force provided by both the adjustment member 310 and the headrest 10. When it is necessary to adjust the height of the headrest 10, the headrest 10 is moved by the resistance force (holding force) of the adjustment member 310 and the adjustment hole 311 against the headrest 10.

[0051] A third embodiment of the present invention will now be described.

[0052] Referring to Figures 6 and 7, the first connecting member 30 may include a connecting strap 320 and a connecting sheet 330. One end of the connecting strap 320 may be fixed to the headrest 10. The other end of the connecting strap 320 may be provided with a connecting sheet 330. The connecting sheet 330 is made of rigid plastic and may be approximately perpendicular to the connecting strap 320.

[0053] The second connecting member 40 may include an adjustment strap 410 and a buckle 420. One end of the adjustment strap 410 may be fixed to the backrest 50, and the other end of the adjustment strap 410 may be fixedly or removably connected to the backrest 50. When the other end of the adjustment strap 410 is removably connected to the backrest 50, the headrest 10 may be removed from the backrest 50, facilitating operations such as cleaning, maintenance, and replacement. Both ends of the adjustment strap 410 are located at different heights. The buckle 420 is movably provided on the adjustment strap 410. A sufficient holding force can be formed between the adjustment strap 410 and the buckle 420. The connecting strap 320 passes through the buckle 420, and the connecting sheet 330 cooperates with the buckle 420 to prevent the separation of the headrest 10 and the backrest 50.

[0054] Specifically, as shown in FIG. 6, the buckle 420 may be a buckle having three holes. The buckle having three holes can be understood as a buckle with a shape similar to the Chinese character "eye" and has three holes arranged in the vertical direction. The adjustment strap 410 can pass through one of the holes of the buckle having three holes (for example, the lowermost hole), and the size of the connecting sheet 330 is larger than that of the corresponding hole of the buckle having three holes. Thus, since the connecting sheet 330 is blocked by the buckle 420 at the rear side of the buckle 420, the headrest 10 is attached to the backrest 50 and cannot be removed.

[0055] In this embodiment, the connecting strap 3, the connecting sheet 330, the adjustment strap 410, and the buckle 420 may all be formed in two symmetrical parts. The adjustment strap 410 is oriented substantially vertically to provide an adjustable range of the height of the headrest 10. The connecting strap may have a relatively short length, which facilitates the connecting sheet 330 passing through the buckle 420 and may be installed so that the headrest 10 does not visibly shake with respect to the backrest 50.

[0056] The connecting sheet 330 can be formed as a rectangular piece. Optionally, the connecting sheet 330 is configured to separate the headrest 10 from the backrest 50 by rotating the holes of a buckle having three holes at a predetermined angle.

[0057] A fourth embodiment of the present invention will now be described. Since the fourth embodiment is the same as the second embodiment, only the differences will be described.

[0058] Referring to Figure 8, the adjustment strap 410 has a plurality of holes 411 formed along its longitudinal direction. These holes 411 form a certain undulation on the surface of the adjustment strap 410, which can increase the holding force between the adjustment strap 410 and the connecting sheet 330. Although only one adjustment strap 410 is shown in Figure 8, it is preferable that two adjustment straps 410 are arranged side by side. Two adjustment members 310 may be formed side by side at the same height. The adjustment members 310 may be connected to the headrest 1 on only one side, that is, the adjustment member 310 may have a connecting portion 340 on only one side. Preferably, the two adjustment members 310 have connecting portions 340 only on the inner side (the side closer to each other). In this way, the other side (upper side, lower side, and outer side) of the adjustment member 310 can move away from the headrest 10, thereby allowing the headrest 10 to be separated from the backrest 50 by a finite distance. This is advantageous for ease of operation when adjusting the height of the headrest 10. The two spaced-apart adjustment members 310 save material, and the headrest 10 can be stably attached to the backrest 50 when the adjustment member 310 is fixed to the headrest 10 on only one side. The above configuration in this embodiment can be similarly applied to other embodiments.

[0059] A fifth embodiment of the present invention will now be described. Since the fifth embodiment is the same as the second embodiment, only the differences will be described below.

[0060] Referring to Figure 9, although only one adjustment strap 410 is shown, it is preferable that two adjustment straps 410 are arranged side by side. Two adjustment members 310 may be formed side by side at the same height. The headrest 10 may include pockets 120. A portion of each adjustment member 310 (outside in Figure 9) is insertable into the pocket 120. The pocket 120 is a sheet that covers the headrest 10, for example, with a portion of its outer circumference (for example, the upper, lower, and left side for the left pocket 120 in Figure 9) attached to the headrest 10, and the remaining portion of its outer circumference (for example, the right side for the left pocket 120 in Figure 9) not attached to the headrest 10, allowing an opening to be formed. The adjustment members 310 may be foldable to facilitate insertion into the pocket 120.

[0061] The headrest 10 may include a fixing strap 130. The fixing strap 130 may be a fabric strap. One end of the fixing strap 130 may be fixed to the headrest 10, for example, in a position located within the pocket 120 of the headrest 10. The other end of the fixing strap 130 is detachably connected (for example, by a hook-and-loop tape) to the first surface of the adjustment member 310 (for example, the surface of the adjustment member 310 that faces the backrest 50), forming a first attachment portion 140.

[0062] In Figure 9, parts of the adjustment member 310 and the fixing strap 130 are indicated by dashed lines to show that these parts are obscured by the pocket 120 and are not visible.

[0063] The headrest 10 is detachably connected to the second surface of the adjustment member 310 (for example, by a hook-and-loop tape method), forming a second mounting portion 150. The second surface is, for example, the surface of the adjustment member 310 that faces the headrest 10. That is, the first surface faces the second surface. The second mounting portion 150 may be located approximately in the center of the adjustment member 310. The second mounting portion 150 may be located in other positions. In Figure 9, the second mounting portion 150 is formed to the left of the adjustment hole 311, but it may also be understood that the second mounting portion 150 may be formed to the right of the adjustment hole 311. The first mounting portion 140 and the second mounting portion 150 allow the adjustment member 310 to be separated from the headrest 10, while also forming a stable and secure connection with the headrest 10 and preventing rattling of the headrest 10.

[0064] The second mounting portion 150 in Figure 9 is shown with a dashed line, which means that the second mounting portion 150 is formed on the surface of the adjustment member 310 that faces the headrest 10 and is therefore not visible.

[0065] The adjustment strap 410 may have a plurality of holes 411 formed along its longitudinal direction. These holes 411 can form a certain undulation on the surface of the adjustment strap 410, thereby increasing the holding force between the adjustment strap 410 and the connecting sheet 330.

[0066] Figure 9 shows two separate adjustment members 310, but it may be understood that the adjustment member 310 may be formed as a whole. In this case, pockets 120 may be formed on both the left and right sides of the whole adjustment member 310, with first mounting portions 140 provided on each side, and a second mounting portion 150 may be located in the center of the adjustment member 310. Optionally, the adjustment member 310 may have a connecting portion 340 formed thereon, similar to the fourth embodiment.

[0067] A sixth embodiment of the present invention will now be described. Since the sixth embodiment is the same as the fifth embodiment, only the differences will be described below.

[0068] Referring to Figure 10, in this embodiment, it is not necessary to form a fixing strap 130. A portion of each adjustment member 310 (for example, the left portion of the left adjustment member 310) is insertable into the pocket 120 and is detachably connected to the headrest 10 via a component such as a button (for example, a button is provided on the adjustment member 310, and a hole is provided at a corresponding position in the pocket 120 that cooperates with the button) or a snap fastener, forming a first mounting portion 140.

[0069] In Figure 10, parts of the adjustment member 310 and the fixing strap 130 are indicated by dashed lines to show that these parts are obscured by the pocket 120 and are not visible. Also, in Figure 10, the second mounting portion 150 is indicated by a dashed line to show that the second mounting portion 150 is formed on the surface of the adjustment member 310 facing the headrest 10 and is not visible.

[0070] The headrest 10 may include a restraint ring 160. The adjustment member 310 can pass through the restraint ring 160 so that the restraint ring 160 restrains and fixes the adjustment member 310 to some extent. The portion of the adjustment member 310 that passes through the restraint ring 160 and the portion that is inserted into the pocket 120 may be narrower in width (vertical dimension shown in Figure 10) than the other portions so that the adjustment member 310 can extend through the restraint ring 160 and easily insert into the pocket 120.

[0071] In this embodiment, the first mounting portion 140 and the second mounting portion 150 allow the adjustment member 310 to be separated from the headrest 10, while also forming a stable and secure connection with the headrest 10, preventing the headrest 10 from rattling. The first mounting portion 140 provided in the pocket 120 is less likely to be opened unintentionally, preventing the adjustment member 310 from being unintentionally detached from the headrest 10.

[0072] A seventh embodiment of the present invention will now be described. Since the seventh embodiment is the same as the sixth embodiment, only the differences will be described below.

[0073] Referring to Figure 11, in this embodiment, the adjustment member 310 may be formed as a single unit, but the present application is not limited thereto. The adjustment member 310 may be formed as a rectangle (i.e., having a matching width), but the present application is not limited thereto. Both ends of the adjustment member 310 are detachably connected to the headrest 10 via the first mounting portion (button) 140. Each end of the adjustment member 310 may be provided with two buttons for forming a stable tightening force, but the present application is not limited to the number of buttons. The two portions of the first mounting portion (button) 140 are provided at corresponding positions on the adjustment member 310 and the headrest 10, respectively.

[0074] Although only one adjustment strap 410 is shown in Figure 11, this embodiment may have two adjustment straps 410 installed in parallel and symmetrically. The first mounting portion 140 in Figure 11 is indicated by a dashed line showing that it is blocked by the adjustment member 310.

[0075] In this embodiment, the pocket 120, the second mounting portion 150, and the restraining ring 160 may be omitted. For other parts of this embodiment, refer to the sixth embodiment.

[0076] In this embodiment, the adjustment member 310 can be detached from the headrest 10 by the multiple first mounting parts (buttons) 140, while also forming a stable and reliable connection with the headrest 10, preventing rattling of the headrest 10, making it easy to operate and low-cost.

[0077] An eighth embodiment of the present invention will now be described. Since the eighth embodiment is the same as the seventh embodiment, only the differences will be described below.

[0078] Referring to Figure 12, in this embodiment, the adjustment member 310 may be formed as a single unit, but the present application is not limited thereto. Two fixing arms 312 extend from both ends of the adjustment member 310 along a direction perpendicular to the length of the adjustment member 310. The two fixing arms 312 extend from both ends of the adjustment member 310 in opposite directions. That is, each end of the adjustment member 310 may be formed in a T-shape. Connection holes 170 may be formed in the headrest 10. The number and position of the connection holes 170 may correspond to the number and position of the fixing arms 312. Since the adjustment member 310 is bendable, the fixing arms 312 can be inserted into their respective connection holes 170, and the position of the headrest 10 can be fixed by the adjustment member 310. At the same time, the headrest 10 and the adjustment member 310 can be separated by bending the fixing arms 312.

[0079] Although only one adjustment strap 410 is shown in Figure 12, this embodiment may have two adjustment straps 410 installed in parallel and symmetrically. In Figure 12, a portion of the fixing arm 312 is shown by a dashed line indicating that a portion of the fixing arm 312 is inserted into the connection hole 170.

[0080] In this embodiment, buttons may not be provided. For other parts of this embodiment, refer to the seventh embodiment.

[0081] In this embodiment, the cooperation between the connection hole 170 and the fixing arm 312 makes it possible to separate the adjustment member 310 from the headrest 10, while also forming a stable and reliable connection with the headrest 10, preventing rattling of the headrest 10 and making operation convenient.

[0082] A ninth embodiment of the present invention will now be described. Since the ninth embodiment is the same as the seventh embodiment, only the differences will be described below.

[0083] Referring to Figure 13, in this embodiment, the adjustment member 310 may be formed as a single unit, but the present application is not limited thereto. The adjustment member 310 may be formed as a rectangle (i.e., having a matching width), but the present application is not limited thereto. Both ends of the adjustment member 310 are detachably connected to the headrest 10 via a second mounting portion 150. The second mounting portion 150 may be a hook-and-loop tape. One hook-and-loop tape may be provided at each end of the adjustment member 310, but the present application is not limited thereto. The two portions of the second mounting portion (hook-and-loop tape) 150 are provided at corresponding positions on the adjustment member 310 and the headrest 10, respectively.

[0084] The headrest 10 may include two pockets 120. The two pockets 120 may be positioned corresponding to the ends of the adjustment member 310, such that both ends of the adjustment member 310 are inserted into the two pockets 120. The pockets 120 are sheets that cover the headrest 10, with, for example, a portion of the outer circumference (for example, the upper, lower, and left side for the left pocket 120 in Figure 13) attached to the headrest 10, and the remaining portion of the outer circumference (for example, the right side for the left pocket 120 in Figure 13) not attached to the headrest 10, allowing an opening to be formed. The adjustment member may be foldable to facilitate insertion of the adjustment member 310 into the pockets 120.

[0085] When both ends of the adjustment member 310 are inserted into the two pockets 120, the two second mounting parts 150 can be positioned within the two pockets 120, thereby stably fixing the adjustment member 310 to the headrest 10.

[0086] Although only one adjustment strap 410 is shown in Figure 13, this embodiment may have two adjustment straps 410 installed in parallel and symmetrically. In Figure 13, both ends of the adjustment member 310 are indicated by dashed lines, showing that both ends of the adjustment member 310 extend into the pocket 120. In Figure 13, the second mounting portion 150 is provided on the side of the adjustment member 310 facing the headrest 10, and is therefore indicated by a dashed line, showing that it is obstructed by the adjustment member 310 and the pocket 120.

[0087] In this embodiment, buttons may not be provided. For other parts of this embodiment, refer to the seventh embodiment.

[0088] In this embodiment, the fixing force of the hook-loop tape and the restraint of the adjustment member 310 by the pocket 120 allow the adjustment member 310 to be detached from the headrest 10, while also forming a stable and reliable connection with the headrest 10, preventing rattling of the headrest 10, and making it easy to operate.

[0089] A tenth embodiment of the present invention will now be described. Since the tenth embodiment is the same as the seventh embodiment, only the differences will be described below.

[0090] Referring to Figure 14, in this embodiment, the adjustment member 310 may be formed as a single unit, but the present application is not limited thereto. The adjustment member 310 may be formed as a rectangle (i.e., having a matching width), but the present application is not limited thereto. Both ends of the adjustment member 310 are detachably connected to the headrest 10 via a first mounting portion 140. The first mounting portion 140 may be a button. One button may be provided at each end of the adjustment member 310, but the present application is not limited to the number of buttons. The two portions of the first mounting portion (button) 140 are provided at corresponding positions on the adjustment member 310 and the headrest 10, respectively.

[0091] The headrest 10 may include two pockets 120. The two pockets 120 may be positioned corresponding to the ends of the adjustment member 310, such that both ends of the adjustment member 310 are inserted into the two pockets 120. The pockets 120 are sheets that cover the headrest 10, with, for example, a portion of the outer circumference (e.g., the upper, lower, and left sides for the left pocket 120 in Figure 14) attached to the headrest 10, and the remaining portion of the outer circumference (e.g., the right side for the left pocket 120 in Figure 14) not attached to the headrest 10, allowing an opening to be formed. The adjustment member may be foldable to facilitate insertion of the adjustment member 310 into the pockets 120.

[0092] When both ends of the adjustment member 310 are inserted into the two pockets 120, the two first mounting parts 140 can be positioned within the two pockets 120, thereby stably fixing the adjustment member 310 to the headrest 10.

[0093] A second mounting portion 150 may be provided in the middle of the adjustment member 310, but the present invention does not limit the number of second mounting portions 150. The second mounting portion 150 may be a hook-and-loop tape.

[0094] Although only one adjustment strap 410 is shown in Figure 14, this embodiment may have two adjustment straps 410 installed in parallel and symmetrically. In Figure 14, both ends of the adjustment member 310 are indicated by dashed lines, showing that both ends of the adjustment member 310 extend into the pocket 120. In Figure 14, the first mounting portion 140 is provided on the side of the adjustment member 310 facing the headrest 10 and is indicated by dashed lines, showing that it is obscured by the adjustment member 310 and the pocket 120. In Figure 14, the second mounting portion 150 is provided on the side of the adjustment member 310 facing the headrest 10 and is indicated by dashed lines, showing that it is obscured by the adjustment member 310.

[0095] For other parts of this embodiment, refer to the seventh embodiment.

[0096] In this embodiment, the fixing force of the hook-loop tape and the restraint of the adjustment member 310 by the pocket 120 allow the adjustment member 310 to be detached from the headrest 10, while also forming a stable and reliable connection with the headrest 10, thereby preventing the headrest 10 from rattling.

[0097] An eleventh embodiment of the present invention will now be described.

[0098] Referring to Figures 15 and 16, in this embodiment, the infant carrier 1 may include a headrest 10 and a backrest 50. An adjustment strap 410 is fixedly attached to the backrest 50. Both ends of the adjustment strap 410 may be fixed to the backrest 50, while the other part of the adjustment strap 410 may be detached from the backrest 50. The adjustment strap 410 may be flexible.

[0099] Optionally, two adjustment straps 410 may be installed side by side on the backrest 50. Optionally, the two adjustment straps 410 may be parallel to each other and oriented substantially vertically, with a certain distance between them. The adjustment straps 410 may be braided straps, but the present invention is not limited thereto.

[0100] An adjustment member 430 is slidably provided on the adjustment strap 410. The adjustment member 430 may be formed in the shape of a sheet, but the present invention is not limited thereto. The adjustment member 430 may include a connecting portion 432 and a positioning portion 433 connected to the connecting portion 432. The positioning portion 433 may be provided with at least two adjustment holes 431.

[0101] Optionally, the adjustment member 430 includes one connecting portion 432 and two positioning portions 433 located on either side of the connecting portion 432. Two adjustment straps 410 can each be connected to two positioning portions 433. Specifically, each adjustment strap 410 can sequentially pass through two or more adjustment holes 431 in the corresponding positioning portion 433. Each adjustment hole 431 provides a certain resistance to the adjustment strap 410 passing through it, thereby allowing the adjustment member 430 to be held stationary at multiple specific positions on the adjustment strap 410. At the same time, because the dimensions of the adjustment holes 431 are larger than the dimensions of the adjustment strap 410, the position of the adjustment member 430 relative to the adjustment strap 410 can be changed by moving the adjustment strap 410 relative to the adjustment hole 431. The adjustment member 430 may be integrally molded from plastic or resin, thereby causing the two positioning portions 433 to not synchronize due to uneven force during the process of adjusting the height of the headrest 10, but the present invention is not limited thereto.

[0102] Referring to Figure 16, a connecting strap 320 is fixedly provided on the headrest 10. The connecting strap 320 may be flexible. One end (fixed end) of the connecting strap 320 is fixed to the headrest 10, the other end (free end) of the connecting strap 320 is detachably connected to the headrest 10, and the other part of the connecting strap 320 is detachable from the headrest 10. The free end of the connecting strap 320 is detachably attached to the headrest by one of the following methods: hook-and-loop tape, button, and buckle, but the present invention is not limited thereto. Specifically, a first fixing part 321 may be formed on the free end of the connecting strap 320, a second fixing part 350 may be formed on the headrest 10, the first fixing part 321 may be connected to the second fixing part 350, and the second fixing part 350 may be positioned above the fixed end of the connecting strap 320, but the disclosure is not limited thereto. The number of connecting straps 320 may be less than the number of adjustment straps 410. For example, the headrest 10 may be provided with one connecting strap 320, and the backrest 50 may be provided with two adjustment straps 410, thereby ensuring stability when the headrest 10 slides up and down, and allowing the headrest 10 to be quickly removed from the backrest 20.

[0103] A steering member 360 may be provided on the headrest 10. Both ends of the steering member 360 can be fixed to the headrest 10, thereby creating a passage between the steering member 360 and the headrest 10 for passing a connecting strap 320. The steering member 360 may be a flexible strap or a flexible rope, but is not limited thereto. By providing the steering member 360, during the movement of the headrest 10, the adjustment member 430 can directly contact the attachment point of the free end of the connecting strap 320, preventing the free end from severing its connection with the headrest 10.

[0104] Referring to Figures 15 to 17, first, the free end of the connecting strap 320 on the headrest 10 passes through the passage formed between the connecting portion 432 of the adjustment member 430 and the backrest 50. Then, the free end of the connecting strap 320 passes through the passage formed between the steering member 360 and the headrest 10. Next, the free end of the connecting strap 320 passes again in the reverse direction through the passage formed between the connecting portion 432 of the adjustment member 430 and the backrest 50. Finally, the free end of the connecting strap 320 is detachably connected to the headrest 10 (i.e., the first fixing portion 321 is detachably connected to the second fixing portion 350). Because the headrest 10 and the adjustment seat 430 are detachable, the headrest 10 does not need to contain hard materials such as plastic, and is easy to wash and dry in a washing machine.

[0105] The upper edge of the headrest 10 may be formed at an angle so as to create a gap between the headrest 10 and the backrest 50 for holding the headrest 10. The free end of the connecting strap 320 is detachably attached to the upper edge of the headrest 10, thereby facilitating the removal of the connecting strap 320.

[0106] In this embodiment, the adjustment strap 410 may be referred to as the first connecting member, and the adjustment member 430 may be referred to as the second connecting member.

[0107] In this embodiment, the headrest 10 can be height-adjusted relative to the backrest 50 of the infant carrier 1 to accommodate use by infants or children of different heights. The headrest 10 can be removed from the backrest 50 for easy cleaning.

[0108] The following describes a twelfth embodiment of the present invention. Note that the description of the twelfth embodiment will be omitted for parts that are the same as those of the eleventh embodiment.

[0109] As shown in Figure 18, connecting rings 440 may be formed on the backrest 50. The connecting rings 440 may be flexible straps or flexible ropes, such as braided straps, but the present invention is not limited thereto. Four connecting rings 440 may be formed on the backrest 50, but the present invention is not limited thereto. Preferably, a different number of connecting rings 440, for example, two connecting rings 440, may be formed on the backrest 50.

[0110] Referring to Figure 19, an adjustment member 430 may be provided on the headrest 10. The structure of the adjustment member 430 can be described in the description of the 11th embodiment. The connecting portion 432 of the adjustment member 430 may be fixed to the headrest 10. Specifically, the connecting portion 432 of the adjustment member 430 may be sewn to the headrest 10. The adjustment strap 410 can pass through two or more adjustment holes 431 of the adjustment member 430 in sequence. The positioning portion 433 of the adjustment member 430 can pivot or bend relative to the connecting portion 432 so that the adjustment strap 410 can easily pass through the adjustment holes 431.

[0111] Connecting members 450 may be provided at both ends of the adjustment strap 410. The connecting members 450 can be formed in the shape of the letters "C" or "G". The connecting member 450 may include a first arm 451 and a second arm 452. A notch 453 may be formed between the first arm 451 and the second arm 452. The notch 453 may be controlled to open and close, or the notch 453 may be made smaller to prevent the adjustment strap 410 from detaching from the notch 453, or stopper ribs may be provided at the ends of the first arm 451 and the second arm 452 near the notch to prevent the adjustment strap 410 from detaching from the notch 453, the stopper ribs protruding from the first arm 451 and the second arm 452 and having a thickness greater than the thickness of the adjustment strap. One end of the adjustment strap 410 passes through the notch 453 and is sleeved onto one of the first arm 451 and the second arm 452. The other end of the first arm 451 and the second arm 452 may pass through the connecting ring 440 and be detachably connected to the backrest 50.

[0112] Referring to Figure 20, the adjustment strap 410 is connected to two connecting rings 440 via connecting members 450 at both ends, and the middle portion of the adjustment strap 410 passes through the adjustment hole 431 of the adjustment member 430. This allows the headrest 10 to be detachably connected to the backrest 50. The position of the headrest 10 relative to the backrest 50 can then be adjusted by moving the position of the adjustment strap 410 relative to the adjustment member 430.

[0113] The following describes a thirteenth embodiment of the present invention. Note that the description of the thirteenth embodiment will be omitted for parts that are the same as those of the eleventh embodiment.

[0114] Referring to Figure 21, the difference between this embodiment and the 11th embodiment is that in this embodiment, a connecting member 450 is provided at one end of each adjustment strap 410, a connecting ring 440 corresponding to the connecting member 450 is provided on the backrest 50, and one end of the adjustment strap 410 is detachably connected to the backrest 50. In this embodiment, the adjustment member 430 is detachable from the headrest 10 and the backrest 50, and the adjustment member 430 may be removed when cleaning the headrest 10 and the backrest 50.

[0115] In some small seat cushion products known to the inventor, the headrest and the small seat cushion employ a connection method in which their relative positions are fixed. For example, they are either joined together as a single unit or connected using removable snap buttons or hook-and-loop fasteners. This makes it impossible to adjust the height of the headrest according to the height of the child's head, resulting in poor usability. Similarly, some small seat cushions used in infant and child carriers also have adjustable headrests, but because the headrest and the small seat cushion are each connected to the seat, if removal or cleaning is necessary, the small seat cushion must be removed first, and then the headrest attached to the seat must be removed, which is also inconvenient during use.

[0116] This application provides a seat cushion (or "mini seat cushion") for infants or children that can be detachably attached to and used as part of an infant or child carrier such as a child safety seat, stroller, baby cradle, baby sling, or crib. The seat cushion includes a seat cushion body (or body) and a headrest attached to the seat cushion body. The seat cushion is mainly made of a flexible material and can have a shape that conforms to the carrier to which it is applied. Furthermore, the seat cushion according to this application allows the position of the headrest relative to the seat cushion body to be adjusted as needed to accommodate children of different heights, and this position adjustment can be achieved by a positioning structure between the seat cushion body and the headrest, and this positioning structure can also serve as a connecting structure between the seat cushion body and the headrest.

[0117] Figures 22 to 25 are schematic diagrams of a seat cushion 100S according to the first embodiment of the present invention. Here, Figure 22 is a schematic front view of the seat cushion of this embodiment when the headrest is in the lowest position relative to the seat cushion (or referred to as the "first position"), Figure 23 is a schematic rear view of the seat cushion in the state shown in Figure 22, Figure 24 is a schematic front view of the seat cushion of this embodiment when the headrest is in the highest position relative to the seat cushion (or also referred to as the "second position"), and Figure 25 is a schematic rear view of the seat cushion in the state shown in Figure 24.

[0118] First, referring to Figures 22 and 23, the seat cushion 100S comprises a seat cushion body 110S and a headrest portion 120S provided on the upper part of the seat cushion body 110S. The headrest portion 120S is in the lowest position relative to the seat cushion body 110S (i.e., the first position), and the bottom of the headrest portion 120S at that position is in close contact with the upper side of the seat cushion body 110S. As can be seen from the figures, a pair of shoulder side pads 112S are provided on both sides of the upper part of the seat cushion body 110S, which can be placed on both sides of the occupant's shoulders when in use, and headrest side pads 122S are provided on both sides of the headrest portion 120S, which can be placed on both sides of the occupant's head when in use. As described above, according to the present invention, the seat cushion body 110S and the headrest portion 120S are connected to each other by a positioning structure between them to constitute the entire seat cushion 100S. In the state shown in Figures 22 and 23, the positioning structure is located inside the headrest portion 120S and is not visible, but the positioning structure will be described in detail later.

[0119] In the seat cushion 100S according to this embodiment, the headrest portion 120S can be adjusted and positioned within a certain range relative to the seat cushion body 110S by the positioning portion described above. Referring to Figures 24 and 25, the state in which the headrest portion 120S of the seat cushion 100S is raised and positioned at the highest position (i.e., the second position) is shown. Referring to Figures 22 and 24 together, according to this embodiment, when the headrest portion 120S is lifted relative to the seat cushion body 110S, the neck portion 111S of the seat cushion body, which protrudes from the end of the seat cushion body 110S, can be seen below the headrest portion 120S, and this neck portion 111S of the seat cushion body extends into the interior of the headrest portion 120S from the bottom opening 123S (see Figure 25) of the headrest portion 120S. When the headrest portion 120S reaches the second position (see Figure 24), at which point the headrest portion 120S can be adjusted to its maximum limit position, the upper portion of the neck portion 111S of the seat cushion body is still located inside the headrest portion 120S, and a portion of the slide adjustment strap 130S, which is vertically provided on the neck portion 111S of the seat cushion body, is visible. This slide adjustment strap 130S is part of the positioning structure of the seat cushion 100S of the present invention. Therefore, when using the seat cushion 100S in the first embodiment of the present invention, a portion of the neck portion 111S of the seat cushion body and a portion of the slide adjustment strap 130S above it are always positioned inside the headrest portion 120S.

[0120] In this embodiment, the slide adjustment strap 130S is operably connected to a connecting component provided within the headrest portion 120S, which is another part of the positioning structure. This connecting component works in cooperation with the slide adjustment strap 130S to adjust the position of the headrest portion 120S. Figure 24 shows that the slide adjustment strap 130S is provided with a plurality of convex wire structures 132S arranged laterally, which assist in the vertical positioning of the headrest portion 120S. The configuration of this slide adjustment strap 130S is shown in detail in Figures 27 and 35.

[0121] Furthermore, according to this embodiment, as shown in Figure 22, a lifting strap 118S having a predetermined length is provided at the top of the neck portion 111S of the seat cushion body so that when the headrest portion 120S is in the first position, the lifting strap 118S is exposed at the top of the seat cushion 100S. Specifically, at this time, the lifting strap 118S can penetrate the inside of the headrest portion 120S and extend through the top opening 121S above it. The lifting strap 118S is mainly configured to pull upward to hold the neck portion 111S of the seat cushion body in an upright position in order to move the headrest portion 120S downward. In addition, the lifting strap 118S makes it easier to reach and put your hand on the seat cushion 100S. When the headrest portion 120S is in the second position, as shown in Figures 24 and 25, the lifting strap 118S is retracted into the headrest portion and not exposed. At this time, the user can reach through the top opening 121S of the headrest portion 120S, grasp the lifting strap 118S, and pull it up to adjust the headrest portion 120S downward. However, the present invention is not limited thereto. For example, in the second embodiment of the present invention shown in Figure 26, the lifting strap 118S has sufficient length to extend from the top opening 121S of the headrest portion even when the headrest portion 120S is in the second position. The seat cushion of this embodiment is identical to that of the first embodiment, except for the difference with respect to the lifting strap 118S. In Figure 26, the solid line indicates that the headrest portion 120S is in an intermediate position between the first and second positions, and the dashed line indicates that the headrest portion 120S is in the second position. As can be seen from the figure, when using the seat cushion 100S in this embodiment, the lifting strap 118S is always exposed at the top of the seat cushion 100S, preventing the lifting strap 118S from being retracted when adjusting the movement of the headrest portion 120S, and the top opening 121S of the headrest portion 120S has the function of holding the position and orientation of the lifting strap 118S during this process.In Figure 26, the two opposing movement adjustment directions of the headrest portion 120S are indicated by double arrows. In other embodiments of the present invention, for example, the seat cushions in the embodiments shown in Figures 37 to 40 do not have the lifting strap, but these embodiments will be described in detail below.

[0122] As can be seen from Figures 23 and 25, the rear side of the headrest portion 120S of the seat cushion 100S according to the first embodiment is provided with a first back cover layer 124S and a second back cover layer 125S that are flexible and cover the internal structure of the headrest portion 120S, which may include other parts of the positioning structure described above. However, other parts of the positioning structure described above may be provided as described later with reference to Figures 33 to 35.

[0123] Furthermore, the seat cushion according to the present invention may be connected to the carrier via strap components applied to the carrier, and these strap components may generally include shoulder straps and crotch straps. For this reason, the seat cushion body 110S in the seat cushion 100S according to the present invention may include shoulder strap through holes 114S and crotch strap through holes 116S (see Figures 24 and 25), and the seat cushion can be integrally connected to the carrier in cooperation with the shoulder straps and crotch straps of the carrier, respectively. If it becomes necessary to remove or replace the seat cushion 100S, the connection between these strap components and the seat cushion body 110S can be released, and the entire seat cushion, including the seat cushion body 110S and the headrest portion 120S, can be removed from the carrier.

[0124] As described above, in order to achieve height adjustment and positioning of the headrest portion in the seat cushion according to the present invention, the seat cushion of the present invention includes a positioning structure that is simultaneously connected to the seat cushion body and the headrest portion. The positioning structure may include a first positioning portion and a second positioning portion that cooperate with each other. The first positioning portion may be provided on the seat cushion body, and the second positioning portion may be provided on the headrest portion. This positioning structure will be described in detail with reference to Figures 27 to 36.

[0125] Figure 27 is a schematic front view of an individual seat cushion body according to the first embodiment of the present application. Figure 28 is a schematic rear view of an individual seat cushion body according to the first embodiment, with the neck portion and surrounding portion of the seat cushion body indicated by dashed circles. Figures 29 to 31 show three different embodiments of the neck portion of the seat cushion body, including the neck portion reinforcing plate. Figure 32 is a schematic front view of an individual headrest portion according to an embodiment of the present application. Figure 33 is a schematic rear perspective view of the headrest portion according to the embodiment of the present application shown in Figure 32. Figure 34 is a schematic diagram showing the cooperation method between the neck portion of the seat cushion body according to an embodiment of the present application and the headrest portion in Figure 33, where Figure 35 is a schematic diagram showing the cooperation relationship of the positioning structure shown in Figure 34 individually. Figure 36 is a schematic diagram of the neck portion of the seat cushion body according to a sixth embodiment of the present application.

[0126] Referring to Figures 27 and 28, as well as Figures 24 to 26, according to the first and second embodiments of the present application, the first positioning part of the positioning structure is a slide adjustment strap 130S provided on the neck portion 111S of the seat cushion body, and works in cooperation with a second positioning part (connecting member in this embodiment) provided on the headrest portion 120S to constitute the positioning structure. Positioning of the headrest portion 120S can be achieved by friction or a position regulating structure between the first positioning part and the second positioning part. The slide adjustment strap 130S consists of a pair of elongated slide adjustment straps arranged substantially parallel to each other at a predetermined distance apart in the vertical direction along the front surface of the neck portion 111S of the seat cushion body, and each end 134S of the pair of slide adjustment straps 130S is securely fixed to the neck portion 111S of the seat cushion body. The slide adjustment strap 130S may be made of a woven fabric or a plastic sheet having flexibility and surface roughness, and the slide adjustment strap 130S has a plurality of protruding wire structures 132S provided at predetermined intervals along the lateral direction to assist in cooperative positioning with the connecting member. However, the present invention is not limited thereto. For example, the number of slide adjustment straps 130S may be one or three or more, the slide adjustment strap 130S may not have protruding wire structures, other protruding structures or lateral grooves may be provided to assist in positioning, or the positioning performance may be improved by changing the material surface properties of the slide adjustment strap 130S to improve the frictional force or adhesion force with the connecting member.

[0127] As described above, the second positioning portion of the positioning structure according to the present embodiment is the connecting component 140S provided inside the headrest portion 120S. Referring to FIG. 33, the connecting component 140S is arranged along a substantially horizontal direction inside the headrest portion 120S, and includes a connecting portion 142S located at the central portion and a pair of positioning portions 144S located on both the left and right sides of the connecting portion 142S. The pair of positioning portions 144S are also separated by the above-mentioned predetermined distance. The connecting member 140S includes at least two through holes for passing the corresponding slide adjustment strap 130S. Specifically, each positioning portion 144S in the connecting component 140S includes at least one through hole, preferably a pair of through holes, for example, a double-hole structure in the shape of the Chinese character "日". The shape and arrangement of these engagement holes 146S are suitable for passing the pair of slide adjustment straps 130S therethrough and sliding freely. Reference can be made to the connection engagement schematic diagram of the slide adjustment strap 130S and the connecting component 140S shown in FIG. 35. In addition, the connecting component 140S may be integrally formed using a single plastic sheet, or the plastic connecting portion 142S and the positioning portion 144S may be formed separately and connected thermally or mechanically to form an integral connecting component 140S. However, the embodiments of the connecting components in the present application are not limited thereto. For example, a connecting component having three or more positioning portions may be adopted, or the connecting components themselves may be provided in pairs. The positioning portion is not limited to the double-hole structure, and as long as it can ensure slidable cooperation between the slide adjustment strap and the connecting component and maintain a certain locking effect at multiple positions, it may be formed by a pair of metal rings or ring members of other materials, or may be formed by other components or structures that can be locked to a certain extent with the convex lines, protrusions or concave grooves of the slide adjustment strap.

[0128] More specifically, according to the embodiment of the present application, the connecting component 140S may include a pair of positioning portions 144S arranged horizontally and separated by a predetermined distance, the slide adjustment strap 130S may include a pair of slide adjustment straps 130S arranged parallel to each other and separated by a predetermined distance, each slide adjustment strap 130S may include two ends 134S fixed to one of the seat cushion body 110S or the headrest portion 120S and an overhang portion between the two ends 134S, each positioning portion 144S is fixed to the other of the seat cushion body 110S or the headrest portion 120S, and the overhang portions of the pair of slide adjustment straps 130S are each drilled into the corresponding one of the pair of positioning portions 144S.

[0129] Furthermore, the connecting part 140S is fixed to the headrest part 120S via the connecting part 142S, and a pair of positioning parts 144S having two engagement holes 146S are cantilevered on both sides of the connecting part 142S (i.e., the positioning parts 144S are movable free ends relative to the connecting part 142S). The connecting part 142S can be fixed to the inside of the headrest part 120S by mechanical connection or stitching, and a rectangular connecting part fixing line 148S can be formed as shown in Figures 33 and 35. The two positioning parts 144S can each pivot relative to the connecting part 142S by going around the connecting part fixing line 148S (stitching thread) on one side, thereby facilitating the installation of the slide adjustment strap 130S during the production assembly process. However, the present invention is not limited thereto, and the two ends of the connecting part 140S (i.e., the free ends of the two positioning parts 144S) may be fixed to the headrest together with the connecting part 142S, and it is sufficient that they are not formed in a state of floating in the air, and that the above-mentioned slidable cooperation between the positioning part 144S and the slide adjustment strap 130S is ensured.

[0130] As mentioned above, Figures 27 and 28 show an individual seat cushion body 110S according to this embodiment, which is provided only with a slide adjustment strap 130S, and Figures 32 and 33 show an individual headrest portion 120S according to this embodiment, which is provided only with a separate connecting component 140S. However, in the actual product, as shown in Figures 34 and 35, the slide adjustment strap 130S and the connecting component 140S are connected in cooperation. Furthermore, the cooperative connection between the slide adjustment strap 130S and the connecting component 140S in the seat cushion 100S needs to be completed during the processing and assembly stage of the seat cushion product, for example, so that the slide adjustment strap 130S is passed through the positioning portion 144S of the connecting component before it is fixed to the neck portion 111S of the seat cushion body 110S. Therefore, the division of the seat cushion into two parts shown in Figures 27, 28, 32, and 33 is merely a schematic illustration for the sake of explanation, and such a division does not actually exist.

[0131] Furthermore, in this embodiment, the seat cushion body 110S and the headrest portion 120S of the seat cushion 100S are connected by a positioning structure that includes a slide adjustment strap 130S and a connecting component 140S. However, this does not necessarily mean that the seat cushion body 110S and the headrest portion 120S are inseparable. For example, the slide adjustment strap 130S can be securely fixed to the neck portion of the seat cushion body by a detachable fastening device, and the headrest portion 120S can be removed from the seat cushion body 110S together with the slide adjustment strap 130S as needed.

[0132] According to the present invention, in order to more smoothly adjust the vertical sliding position of the headrest portion of the seat cushion 100S without being hindered by bending or breaking of the neck portion 111S of the seat cushion body, a neck portion reinforcing plate 113S is provided on the back side or inside the neck portion 111S of the seat cushion body to increase the rigidity of this portion, and this neck portion reinforcing plate 113S can be formed from a plastic sheet or a rigid plate thereof. Referring to Figures 29, 30, and 31, three embodiments are shown in which the neck portion reinforcing plate 113S is included on the back side of the neck portion 111S of the seat cushion body. Here, Figure 29 shows a third embodiment of the present invention, and the difference from the first embodiment is mainly that the neck portion reinforcing plate 113S is provided on the back side of the neck portion 111S of the seat cushion body and above the shoulder strap through hole 114S. Figure 30 shows a fourth embodiment of the present invention, the difference from the third embodiment being that the neck reinforcing plate 113S and the lifting strap 118S are integrated, so that the lifting strap and the neck portion are not easily bent or wound up during the process of sliding the headrest portion relative to the seat cushion body, and in this case the lifting strap 118S may be made of the same rigid material as the neck reinforcing plate 113S. In other embodiments, the lifting strap 118S may be made of a hard material, but it may also be made of a flexible material having a certain toughness. Figure 31 shows a fifth embodiment of the present invention, the difference from the third embodiment being that the area of ​​the neck reinforcing plate 113S is extended to include the shoulder strap through hole 114S, and the area of ​​the shoulder strap through hole 114S is reinforced together with the neck portion 111S of the seat cushion body by having a shoulder strap groove in the neck reinforcing plate 113S. In this embodiment, since the area of ​​the neck reinforcement plate 113S extends downwards, the lifting strap 118S is not provided at the top of the neck portion 111S of the seat cushion body. However, the present invention is not limited to this.

[0133] Returning to Figures 33 and 34, and with reference to Figures 23 and 25, the back structure of the headrest portion according to each of the above embodiments will be further described. In Figures 33 and 34, the first back cover layer 124S and the second back cover layer 125S on the rear side of the headrest portion 120S are in an open or semi-open state. In Figure 33, a connecting component 140S located on the front inner surface of the headrest portion 120S is visible, and this connecting component 140S is provided on the inner surface of a recess 128S inside the headrest portion 120S. The recess 128S of the headrest portion 120S is designed to accommodate the neck portion 111S of the corresponding seat cushion body, and a reinforcing layer may be provided on the inner surface of the recess 128S to increase the connection strength between the connecting component 140S and the inside of the headrest portion. The presence of this recess 128S in the headrest portion 120S prevents the overlapping portion between the headrest portion 120S and the neck portion 111S of the seat cushion body from bulging during the process of moving and adjusting the position of the headrest portion 120S, thereby improving the comfort of the seat cushion 100S when used by infants and children. In actual use, the first back cover layer 124S and the second back cover layer 125S are overlapped and surround the rear side of the headrest portion from both sides, and are fixed to each other by the first hook-and-loop portion 126S of the first back cover layer 124S and the second hook-and-loop portion 127S of the second back cover layer 125S, covering the neck portion 111S of the seat cushion body in the recess 128S provided on the inside of the headrest portion 120S, and as shown in Figure 34, the headrest portion 120S can be connected to and sleeved to the neck portion 111S of the seat cushion body. This improves the stability of the connection between the headrest portion 120S and the seat cushion body 110S. In addition, the top opening 121S and bottom opening 123S of the headrest portion 120S are formed between the inner upper and lower edges of the headrest portion 120S and the back cover layers 124S and 125S, respectively, and the size of the bottom opening 123S may be larger than the size of the top opening 121S.However, the headrest portion of the present invention is not limited to the above structure. The first back cover layer and the second back cover layer may be joined to each other by a structure such as a zipper, or the back of the headrest portion 120S may be opened and closed and fixed along the back edge of the headrest portion, and it may also include only an integrated outer cover layer with openings 121S and 123S specifically formed at the top and bottom of the headrest portion.

[0134] Figure 36 is a front view of the neck portion 111S of the seat cushion body according to the sixth embodiment of the present invention, and differs from the above embodiment in that the connecting component of the positioning structure is provided on the neck portion 111S of the seat cushion body, rather than on the headrest portion 120S. Therefore, the slide adjustment strap of the positioning structure according to this embodiment is provided inside the headrest portion 120S (not shown). In addition, the neck portion 111S of the seat cushion body in this embodiment may be provided with a neck portion reinforcing plate (dotted line area in the figure) to improve the convenience of adjusting the position of the headrest portion.

[0135] Figure 37 is a schematic front view of the headrest portion 120S according to the seventh embodiment of the present application. Figure 38 is a schematic front view of the headrest portion 120S according to the eighth embodiment of the present application. Figure 39 is a schematic front view of the seat cushion body 110S according to the seventh and eighth embodiments. Figure 40 is a schematic rear view of the seat cushion body 110S of Figure 39.

[0136] Referring to Figures 37 and 38, the seventh and eighth embodiments of the present application differ from the first to sixth embodiments in that they have a headrest neck portion 129S that protrudes downward from the lower part of the headrest portion 120S. Furthermore, the headrest neck portion 129S of the seventh embodiment is provided with a slide adjustment strap 130S, and the headrest neck portion 129S of the eighth embodiment is provided with a connecting component 140S. Accordingly, referring to Figures 39 and 40 together, the upper part of the seat cushion body 110S according to the seventh and eighth embodiments does not have a neck portion, but has a recess suitable for housing the headrest neck portion 129S inside, and this recess communicates with the outside through a seat cushion body opening 119S formed at the top of the seat cushion body 110S, and the headrest neck portion 129S is fitted into the recess in the upper part of the seat cushion body 110S through the seat cushion body opening 119S. Furthermore, in the seventh embodiment of the present invention, a connecting component 140S is provided in the upper recess of the seat cushion body 110S, which is connected to a slide adjustment strap 130S that cooperates with the headrest neck portion 129S in the recess. Similarly, in the eighth embodiment of the present invention, a slide adjustment strap 130S is provided in the upper recess of the seat cushion body 110S, which is connected to a connecting component 140S that cooperates with the headrest neck portion 129S in the recess. In the seventh and eighth embodiments, the slide adjustment strap 130S, together with the connecting component 140S, constitutes a positioning structure, and when the seat cushion 100S is in use, at least a part of the positioning structure is housed in the upper recess of the seat cushion body 110S.

[0137] Furthermore, as is clear from Figures 39 and 40, the upper part of the seat cushion body 110S according to the seventh and eighth embodiments of this application does not have shoulder strap through holes 114S. In this case, when the seat cushion is to be applied to the corresponding infant carrier, the shoulder straps of the carrier can pass directly between the seat cushion body 110S and the headrest portion 120S, bypass both sides of the headrest neck portion 129S, and connect the seat cushion and the carrier body. Of course, this application is not limited thereto, and in the seventh and eighth embodiments described above, a pair of shoulder strap through holes 114S can be provided in the upper part of the seat cushion body 110S, as in the other embodiments, to allow the shoulder straps of the carrier to be inserted.

[0138] In other embodiments of the present invention, the shoulder strap through-hole 114S provided in the upper part of the seat cushion body 110S may be omitted, and the seat cushion and the carrier body may be connected by passing the carrier's shoulder strap directly between the seat cushion body 110S and the headrest portion 120S. In any case, providing the shoulder strap through-hole 114S in the upper part of the seat cushion body 110S and passing the carrier's shoulder strap through it is an optional configuration.

[0139] Furthermore, in Figures 37 and 38, a reinforcing plate may be provided on the back or inside of the headrest neck portion 129S to improve the rigidity of the headrest neck portion 129S and facilitate the movement adjustment of the headrest portion relative to the seat cushion body.

[0140] Referring back to Figure 35, the position adjustment and positioning of the headrest portion 120S of the seat cushion 100S according to the above embodiment of the present application is achieved by having the slide adjustment strap 130S sequentially pass through the two engagement holes 146S of the positioning portion 144S after the assembly of the positioning structure between the seat cushion body 110S and the headrest portion 120S is completed. Therefore, when an external force (e.g., a lifting force) acts on the headrest portion 120S, the slide adjustment strap 130S slides up and down through the engagement holes 146S of the positioning portion 144S. When the external force is canceled, the friction or adhesion between the slide adjustment strap 130S and the positioning portion 144S, and a position regulating structure such as a protrusion on the slide adjustment strap 130S, are used to hold the two in either relative position.

[0141] According to the above embodiment, the seat cushion of the present invention has a simple structure, and the headrest portion is continuous with the seat cushion body, making it easy to achieve reliable adjustment and positioning.

[0142] On the other hand, the present application provides an infant carrier comprising a carrier body and a seat cushion 100S according to any of the above embodiments of the present application. Figure 41 schematically shows an infant carrier according to the present application, in which the carrier body is a child safety seat 10S, which includes, for example, a seat cushion 100S according to the first embodiment of the present application, and the headrest portion of the seat cushion is in a first position (or the lowest position). Figure 42 schematically shows the infant carrier of Figure 41 with the headrest portion of the seat cushion 100S raised to a second position (or the highest position).

[0143] Referring to Figures 41 and 42, in the infant carrier 1S, the seat cushion 100S according to the first embodiment is connected to a child safety seat 10S which includes a lower seat portion 11S and a backrest portion 12S formed integrally with the seat portion. A pair of shoulder straps 14S and a crotch strap 16S are fixed to the backrest portion 12S and seat portion 11S of the child safety seat 10S, respectively, and connect the seat cushion 100S to the child safety seat 10S via the seat cushion body 110S, providing safety by restraining the shoulders and crotch of a child seated on the seat cushion 100S during actual use. Specifically, one end of each shoulder strap 14S is fixed to the backrest portion 12S, and the other end of each shoulder strap 14S may pass through a corresponding shoulder strap through-hole 114S (see Figure 42) in the upper part of the seat cushion body 110S and be detachably engaged with an engagement buckle 18S provided on one end of the crotch strap 16S. The other end of the crotch strap 16S is fixed to the seat portion 11S by passing through one of the crotch strap through holes 116S in the middle and lower part of the seat cushion body 110S. The shoulder strap 14S and the crotch strap 16S are securely connected and easily separated by the engaging buckle 18S. Of course, the connection method of the shoulder strap 14S of the infant carrier 1S is not limited to the above structure. One end of the shoulder strap 14S may not be fixed to the backrest portion 12S and may be provided to be adjustable in length, and the other end of the shoulder strap 14S may be fixed to the seat portion 11S. The buckle provided in the middle and lower part of the shoulder strap 14S engages with the engaging buckle 18S on the crotch strap 16S to form a five-point safety belt, which can more effectively secure and protect infants and children to whom the infant carrier 1S is applied.

[0144] The seat cushion 100S can be connected to the child safety seat 10S by passing the shoulder strap 14S and crotch strap 16S through the shoulder strap through-hole 114S and crotch strap through-hole 116S, respectively, in the seat cushion body 110S. When in use, the headrest portion 120S of the seat cushion 100S can be placed on the surface of the backrest portion 12S of the child safety seat 10S and its vertical position can be adjusted according to the actual needs. If it is necessary to remove the seat cushion 100S from the child safety seat 10S, the entire seat cushion 100S can be separated from the child safety seat by detaching the shoulder strap 14S from the engagement buckle 18S and pulling the shoulder strap 14S and crotch strap 16S through the corresponding through-holes 114S and 116S of the seat cushion body, thereby allowing the seat cushion to be removed or replaced. At this time, the seat cushion body 110S of the seat cushion 100S according to the present invention is always integrally connected to the headrest portion 120S.

[0145] Furthermore, in the infant carrier 1S according to the present invention, in addition to the child safety seat 10S, the carrier body may be a stroller, baby cradle, baby carrier, or baby bed, and the seat cushion 100S according to any of the above embodiments of the present invention can be applied to these carrier bodies.

[0146] A person skilled in the art will readily conceive of other embodiments of the Application after practicing the Specification and the Inventions Disclosed herein. This Application is intended to cover any variations, uses, or adaptive changes of the Disclosure, which will follow the general principles of the Disclosure and include common or conventional art means in the Art not disclosed herein. The Specification and Examples are illustrative only, and the true scope and spirit of the Application are indicated by the Claims of the Application.

[0147] The embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. Since this application can be specifically implemented in various forms without departing from the spirit and substance thereof, the above embodiments are not limited to the above details and should be interpreted most broadly within the scope defined by the claims, so all variations falling within the claims or equivalents thereof should be covered by the claims. [Explanation of symbols]

[0148] 1. Infant carrier 10 headrests 110 Shoulder strap holes 120 pockets 140 First mounting section 150 Second mounting section 160 Restraint Rings 170 connection holes 2. Safety belt 20 Shoulder straps 21 Adjustable strap 23 Crotch strap 25 Buckles 30 First connecting member 310 Adjustment Member 311 Adjustment hole 312 Fixed Arm 320 Connecting Straps 321 First fixing part 330 Connection Sheet 340 Connection part 350 Second fixing part 360 Steering component 40 Second connecting member 410 Adjustable Strap 411 holes 412 Adjustment strap connection ring 420 Buckle 430 Adjustment Member 431 Adjustment hole 432 Connection part 433 Positioning section 440 connecting rings 450 Connecting Member 451 First Arm 452 Second Arm 453 Notches 50 Backrest 1S Infant Carrier 10S Child Safety Seat 11S Seat section 12S Backrest 14S Shoulder Strap 16S Crotch Strap 18S Engagement Latch 100S Seat Cushion 110S Seat Cushion Body 111S Seat cushion body neck section 112S Shoulder side pads 113S Neck reinforcement plate 114S Shoulder strap pass-through holes 116S Crotch strap through hole 118S Lifting Strap 119S Seat cushion main body opening 120S Headrest 121S Top opening 122S Headrest Side Pads 123S bottom opening 124S First back cover layer 125S Second back cover layer 126S First hook loop section 127S Second hook loop section 128S Headrest inner recess 129S Headrest Neck Section 130S Slide Adjustment Strap 132S convex line structure 134S end 140S Connecting parts 142S Connection 144S Positioning section 146S Engagement hole 148S Connection fixed wire

Claims

1. An infant carrier equipped with a backrest and a headrest, The aforementioned backrest has a first connecting member, The headrest has a second connecting member, the first connecting member is slidably positioned relative to the second connecting member to adjust the height of the headrest relative to the backrest, the first connecting member is an adjustment strap, and the second connecting member is an adjustment member having a plurality of adjustment holes, the adjustment strap extending through the plurality of adjustment holes. The adjustment member is detachably attached to the headrest. An infant carrier characterized by the following features.

2. The infant carrier further includes shoulder straps, The headrest has shoulder strap holes, and the shoulder straps are connected to the backrest and extend through the shoulder strap holes in the headrest. The infant carrier according to feature 1.

3. The adjustment member includes a connecting strap and a connecting sheet, the connecting strap having one end fixed to the headrest and the other end having the connecting sheet, the adjustment strap having a buckle, the adjustment strap having one end fixed to the backrest and the other end fixed or detachably connected to the backrest, the buckle being movably provided on the adjustment strap, the connecting strap extending through the buckle, and the connecting sheet cooperating with the buckle to prevent the headrest and the backrest from separating. An infant carrier according to claim 1 or 2.

4. The headrest has two adjustment members arranged side by side, and the two adjustment members are fixed to the headrest on the sides closest to each other. An infant carrier according to any one of claims 1 to 3.

5. The headrest includes a pocket into which a portion of the adjustment member is inserted, the headrest includes a fixing strap with one end fixed to the headrest and the other end detachably connected to a first surface of the adjustment member, the one end of the fixing strap is located in the pocket, and the portion of the adjustment member is connected to the pocket by a button. The infant carrier according to feature 4.

6. The headrest is provided with a connecting strap, a passage is formed between the connecting strap and the headrest, the adjustment member is removably extended into the passage, and the adjustment holes are located on both sides of the connecting strap. An infant carrier according to any one of claims 1 to 5.

7. The headrest is further provided with a steering member, and the connecting strap has a fixed end that is fixedly connected to the headrest and a free end that is detachably attached to the headrest, the free end extending through the steering member and detachably attached to the headrest, thereby forming the passage between the fixed end and the free end of the connecting strap that surrounds the adjustment member and the steering member. The infant carrier according to feature 6.

8. The free end of the connecting strap is detachably attached to the headrest by one of the following: a hook-and-loop tape, a button, or a snap-fit. The infant carrier according to feature 7.

9. The steering member is a flexible rope with both ends fixed to the headrest, the connecting strap surrounds the connection portion of the adjustment member and the steering member, and the number of connecting straps is less than the number of adjustment straps. An infant carrier according to claim 7 or 8.

10. The adjustment strap is inserted through one of the adjustment holes between the adjustment member and the headrest, and exits through the other adjustment hole, thereby allowing the adjustment member to apply a holding force to the adjustment member. One end of the adjustment strap is fixed to the backrest, and the other end of the adjustment strap is detachably connected to the backrest via a connecting member, or each end of each adjustment strap is detachably connected to a connecting ring via the connecting member. An infant carrier according to any one of claims 1 to 9.

11. The connecting member includes a first arm extending through the connecting ring and a second arm extending through the end of the adjustment strap, wherein a notch is formed between the first arm and the second arm, the first arm is provided with a first stopper rib at the end of the notch to prevent the adjustment strap from detaching from the notch, and the second arm is provided with a second stopper rib at the end of the notch to prevent the adjustment strap from detaching from the notch, or the first arm is pivotably connected to the second arm, and the notch can be opened and closed by pivoting between the first arm and the second arm. The infant carrier according to feature 10.

12. The adjustment member includes a connecting portion and a plurality of positioning portions connected to the connecting portion, each of the plurality of positioning portions having at least two adjustment holes, and the backrest has a plurality of adjustment straps arranged in parallel to the plurality of positioning portions, with each of the plurality of adjustment straps extending sequentially through the adjustment holes of the corresponding positioning portion, the connecting portion of the adjustment member is fixedly connected to the headrest, and the positioning portions are pivotable relative to the connecting portion. An infant carrier according to any one of claims 1 to 11.

13. The upper edge of the backrest is formed as a slope to form a gap between the headrest and the backrest for holding the headrest, and the free end of the connecting strap is detachably attached to the upper edge of the headrest. The infant carrier according to feature 7.

14. A seat cushion applicable to an infant carrier, The seat cushion itself, The headrest and, The seat cushion body includes a positioning structure that includes a first positioning portion provided on the seat cushion body and a second positioning portion provided on the headrest portion, The first positioning unit and the second positioning unit are connected to each other so as to be movable in order to position the headrest unit at multiple positions relative to the seat cushion body. The first positioning portion of the positioning structure is a slide adjustment strap, and the second positioning portion of the positioning structure is a connecting component, or the first positioning portion of the positioning structure is a connecting component, and the second positioning portion of the positioning structure is a slide adjustment strap, The slide adjustment strap engages with the connecting component in a slidable manner relative to each other, thereby movably connecting the headrest portion to the seat cushion body, and the headrest portion can be positioned at different positions relative to the seat cushion body through the cooperation of the slide adjustment strap and the connecting component. A seat cushion characterized by the following features.

15. The connecting component comprises a connecting portion fixed to the seat cushion body or the headrest portion, and at least one positioning portion connected to the connecting portion, wherein the positioning portion is movably connected to the slide adjustment strap and pivotable relative to the connecting portion. The seat cushion according to feature 14.

16. One end of the headrest portion has a protruding headrest neck portion, the second positioning portion is located on the headrest neck portion, the seat cushion body has a recess corresponding to the headrest neck portion, and when adjusting the position of the headrest portion, the headrest neck portion can slide within the recess of the seat cushion body. The seat cushion according to feature 14 or 15.

17. The headrest portion includes a back cover layer surrounding the neck portion of the seat cushion body, and the headrest portion is sleeved to the neck portion of the seat cushion body. A seat cushion according to any one of claims 14 to 16.

18. A lifting strap is provided at the end of the neck portion of the seat cushion body, a first opening is provided at the first end of the headrest portion for extending through the neck portion of the seat cushion body, and a second opening is provided at the second end of the headrest portion for extending through the lifting strap, and the dimensions of the first opening are larger than the dimensions of the second opening. The seat cushion according to feature 16.

19. The length of the lifting strap is configured such that the lifting strap always extends through the second opening when the headrest is positioned in any desired location, and the lifting strap is made of a rigid material. The seat cushion according to feature 18.

20. The connecting component has two or more through holes, the slide adjustment strap extends through the through holes, the connecting component includes a pair of positioning parts arranged horizontally at a predetermined distance apart, the slide adjustment strap includes a pair of slide adjustment straps arranged parallel to each other at the predetermined distance apart, each slide adjustment strap has two ends fixed to one of the seat cushion body or the headrest part and an overhang part located between the two ends, each positioning part is fixed to the other of the seat cushion body or the headrest part, and the overhang parts of the pair of slide adjustment straps extend through a corresponding positioning part of the pair of positioning parts. A seat cushion according to any one of claims 14 to 19.

21. The slide adjustment strap is a braided strap, and the slide adjustment strap has a plurality of convex wire structures extending perpendicular to the longitudinal direction of the slide adjustment strap, and the connecting part is a plastic sheet. The seat cushion according to claim 20.

22. A rigid sheet is provided on the neck portion of the seat cushion body, along the direction of movement of the headrest portion. A seat cushion according to any one of claims 16 to 21, characterized by the above.

23. The rigid sheet has shoulder strap grooves for passing shoulder straps through, and the seat cushion body has a crotch strap through hole for passing crotch straps through. The seat cushion according to feature 22.

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