EP4688499A2

EP4688499A2 - Seat cushion and infant carrier with seat cushion

Info

Publication number: EP4688499A2
Application number: EP24714912.3A
Authority: EP
Inventors: Daliang ZHANG; Ruyi Li; Xiangyong Zeng
Original assignee: Wonderland Switzerland AG
Current assignee: Wonderland Switzerland AG
Priority date: 2023-03-25
Filing date: 2024-03-22
Publication date: 2026-02-11
Also published as: CN222973247U; DE112024001412T5; WO2024200256A3; TW202438355A; CN118906930A; WO2024200256A2; JP2026511195A; TWI896045B

Abstract

The present application discloses an infant carrier, which includes: a backrest; a headrest formed with a shoulder strap hole; and a shoulder strap extended through the shoulder strap hole, where a back side of the headrest is provided with a first connecting member, a front side of the backrest is provided with a second connecting member, and the first connecting member is attached to the second connecting member in a height adjustable manner. The infant carrier provided by the present application can simultaneously adjust the height of the shoulder strap while adjusting the height of the headrest.

Description

SEAT CUSHION AND INFANT CARRIER WITH SEAT CUSHION

TECHNICAL FIELD

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

BACKGROUND

[0002] Infant carriers have become indispensable for children's transportation. Existing infant carriers are provided with height-adjustable headrests to accommodate growing children. However, when the height of the headrest of the existing infant carrier is adjusted, the height of the shoulder straps for restraining the child does not change, so that the shoulders of a taller child do not fit well with the shoulder straps when using the existing infant carriers.

[0003] In addition, the manner for adjusting the height of the headrest of the existing infant carrier is not flexible enough, the connection manners are limited, and operation is inconvenient.

[0004] An infant or child carrier such as a child safety seat or a stroller is usually equipped with a seat cushion structure (which may be referred to as a "small seat cushion") to ensure that the toddler or child is seated in a size- appropriate and comfortable manner. Such kind of small seat cushions may be installed on a child seat by means of inserting straps or attaching buckles during use, and can be detached from the child safety seat for easy cleaning or replacement. In addition, to ensure children's head comfort during use, small seat cushions are usually equipped with a headrest portion for children to rest on while seated.

[0005] Therefore, there is a need to develop an infant carrier that can solve the above problems.

SUMMARY

[0006] The purpose of the present application is to provide an infant carrier that can simultaneously adjust the height of the shoulder straps while adjusting the height of the headrest.

[0007] The present application provides a seat cushion arranged on an infant or child carrier, which can solve the problem of inconvenient height adjustment and positioning of the headrest portion of seat cushion products in the prior art.

[0008] In order to achieve the above purposes, the present application provides an infant carrier, which includes: a backrest with a first connecting member; a headrest with a second connecting member, where the first connecting member is capable of being slidably positioned relative to the second connecting member to adjust a height of the headrest relative to the backrest, the first connecting member is an adjusting strap, the second connecting member is an adjusting member provided with a plurality of adjusting holes, and the adjusting strap extends through the plurality of the adjusting holes; and the adjusting member is detachably connected to the headrest.

[0009] In an embodiment, the infant carrier further includes a shoulder strap, where a shoulder strap hole is formed on the headrest, the shoulder strap is connected to the backrest and extends through the shoulder strap hole on the headrest.

[0010] In an embodiment, the adjusting member includes a connecting strap and a connecting sheet, one end of the connecting strap is secured to the headrest, the other end of the connecting strap is provided with the connecting sheet, the adjusting strap is provided with a buckle, one end of the adjusting strap is secured to the backrest, the other end of the adjusting strap is fixedly or detachably connected to the backrest, the buckle is movably provided on the adjusting strap, the connecting strap extends through the buckle, and the connecting sheet fits with the buckle to prevent the headrest from being separated from the backrest.

[0011] In an embodiment, the headrest is provided with two adjusting members arranged side by side, and sides of the two adjusting members proximate to each other are secured to the headrest.

[0012] In an embodiment, the headrest includes a pocket, and a portion of the adjusting member is inserted into the pocket; the headrest includes a securing strap, one end of the securing strap is secured to the headrest, the other end of the securing strap is detachably connected to a first surface of the adjusting member, the one end of the securing strap is located within the pocket, and the portion of the adjusting member is connected to the pocket by a button.

[0013] In an embodiment, the headrest is provided with a connecting strap, a channel is formed between the connecting strap and the headrest, the adjusting member is detachably extended into the channel, and the adjusting holes are respectively located on both sides of the connecting strap.

[0014] In an embodiment, the headrest is further provided with a steering member, the connecting strap includes a fixed end secured to the headrest and a free end detachably attached to the headrest, the free end extends through the steering member and is detachably attached to the headrest, so that the channel surrounding the adjusting member and the steering member is formed between the fixed end and the free end of the connecting strap.

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

[0016] In an embodiment, the steering member is a flexible rope secured to the headrest at both ends, the connecting strap surrounds a connecting portion of the adjusting member and the steering member, and the number of the connecting straps is less than the number of the adjusting straps. [0017] In an embodiment, the adjusting strap is extended between the adjusting member and the headrest from one of the adjusting holes and out of the adjusting member from another adjusting hole so that the adjusting member exerts a holding force on the adjusting member, where one end of the adjusting strap is secured to the backrest, and the other end of the adjusting strap is detachably connected to the backrest via a connecting member, or each end of each adjusting strap is detachably connected to a connecting ring via the connecting member.

[0018] In an embodiment, the connecting member includes a first arm and a second arm, where the first arm extends through the connecting ring, the second arm extends through the end of the adjusting strap, and a notch is formed between the first arm and the second arm; where the first arm is provided with a first stop rib at an end of the notch for preventing the adjusting strap from being disengaged from the notch, and the second arm is provided with a second stop rib at the end of the notch for preventing the adjusting strap from being disengaged from the notch; or, the first arm is pivotally connected to the second arm, and the notch is capable of being opened and closed through the pivot between the first arm and the second arm.

[0019] In an embodiment, the adjusting member includes a connecting portion and a plurality of positioning portions connected to the connecting portion, the plurality of positioning portions are each provided with at least two adjusting holes, a plurality of the adjusting straps corresponding to the plurality of positioning portions are provided in parallel on the backrest, and each of the plurality of the adjusting straps is extended sequentially through each of the adjusting holes of a corresponding one of the positioning portions; the connecting portion of the adjusting member is fixedly connected to the headrest, and the positioning portion is capable of being pivoted relative to the connecting portion.

[0020] In an embodiment, an upper edge of the backrest is formed into a slope so that a gap between the headrest and the backrest for holding the headrest is formed, and the free end of the connecting strap is detachably attached to the upper edge of the headrest.

[0021] In another aspect, the present application provides a seat cushion, which can be applied to an infant carrier, and the seat cushion includes: a seat cushion body; a headrest portion; and a positioning structure, including a first positioning part provided to the seat cushion body and a second positioning part provided to the headrest portion, where the first positioning part and the second positioning part are movably connected to each other to position the headrest portion at a plurality of positions relative to the seat cushion body, where the first positioning part of the positioning structure is a sliding adjustment strap, and the second positioning part of the positioning structure is a connecting component; or, the first positioning part of the positioning structure is a connecting component, and the second positioning part of the positioning structure is a sliding adjustment strap; the sliding adjustment strap and the connecting component are engaged in a manner capable of sliding relative to each other to movably connect the headrest portion to the seat cushion body, and the headrest portion is capable of being positioned at different positions relative to the seat cushion body through the fit between the sliding adjustment strap and the connecting component. In this way, the seat cushion of the present disclosure not only has a simple structure, but also can realize the continuous adjustment and positioning of the headrest portion on the seat cushion body.

[0022] In an embodiment, the connecting component includes a connecting portion and at least one positioning portion connected to the connecting portion, the positioning portion is movably connected to the sliding adjustment strap, the connecting portion is secured to the seat cushion body or the headrest portion, and the positioning portion is capable of being pivoted relative to the connecting portion.

[0023] In an embodiment , one end of the headrest portion is provided with a protruding neck portion of the headrest portion, the second positioning part is located on the neck portion of the headrest portion, the seat cushion body is provided with a concave portion corresponding to the neck portion of the headrest portion, and when a position of the headrest portion is adjusted, the neck portion of the headrest portion is capable of sliding within the concave portion of the seat cushion body.

[0024] In an embodiment , the headrest portion includes a back covering layer surrounding a neck portion of the seat cushion body so that the headrest portion is sleeved on the neck portion of the seat cushion body, thereby enhancing the stability of the connection between the headrest portion and the seat cushion body.

[0025] In an embodiment, an end of the neck portion of the seat cushion body is provided with a lifting strap, a first end of the headrest portion is provided with a first opening for extending through the neck portion of the seat cushion body, a second end of the headrest portion is provided with a second opening for extending through the lifting strap, and a size of the first opening is greater than a size of the second opening.

[0026] In an embodiment, a length of the lifting strap is configured to always allow the lifting strap extending through the second opening when the headrest portion is positioned in any position, and the lifting strap is made of rigid material.

[0027] In an embodiment, the connecting component is provided with two or more through holes, and the sliding adjustment strap extends through the through holes, and the positioning of the headrest portion is achieved by the friction between the sliding adjustment strap and walls of the through holes. The connecting component includes a pair of the positioning portions arranged in a horizontal direction and separated by a predetermined distance, and the sliding adjustment strap includes a pair of sliding adjustment straps arranged in parallel and separated by the predetermined distance, where each of the sliding adjustment straps includes two end portions secured to one of the seat cushion body and the headrest portion and an overhanging section between the two end portions, each of the positioning portions is secured to the other of the seat cushion body and the headrest portion, and the overhanging sections of the pair of sliding adjustment straps are respectively extended through a corresponding one of the pair of positioning portions.

[0028] In an embodiment, the sliding adjustment strap is a braided strap, the sliding adjustment strap is provided with a plurality of convex line structures extending in a direction perpendicular to a length direction of the sliding adjustment strap, and the connecting component may be a plastic sheet. [0029] In an embodiment, the neck portion of the seat cushion body is provided with a hard sheet along a moving direction of the headrest portion.

[0030] In an embodiment, the hard sheet is provided with a shoulder strap groove through which a shoulder strap is extended, and the seat cushion body is provided with a crotch strap through hole through which a crotch strap is extended.

[0031] The height of the headrest of the infant carrier of the present application is adjustable, and the headrest is provided with shoulder strap holes, which can synchronously drive the adjustment of the height of the shoulder straps.

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

[0033] In the present application, an adjusting strap is provided on the backrest of the infant carrier, and the headrest connected with the adjusting member is slidably connected to the adjusting strap through the adjusting member, thereby achieving height adjustment of the headrest. Therefore, the connection structure between the headrest and the backrest of the present application is simple and easy to operate.

[0034] In the present application, a connecting strap is provided on the headrest, the connecting strap is detachably connected to the adjusting member and fixed with a hook and loop tape, so that the headrest can be easily disassembled. Therefore, the connection structure between the headrest and the backrest of the present application is simple and easy to operate.

BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The various objects, features and advantages of the present disclosure will become more apparent by considering the following detailed description of preferred embodiments of the disclosure in conjunction with the accompanying drawings. The accompanying drawings are merely exemplary illustrations of the present disclosure and are not necessarily drawn to scale. In the accompanying drawings, the same reference numbers always refer to the same or similar parts.

[0036] FIG. 1 is a schematic diagram of an infant carrier of the present application, where a headrest is in a lower position;

[0037] FIG. 2 is a schematic diagram of the infant carrier of the present application, where the headrest is in a higher position;

[0038] FIG. 3 is a schematic diagram of a first embodiment of the infant carrier of the present application, where the headrest is in a position separated from the backrest;

[0039] FIG. 4 is a schematic diagram of a second embodiment of the infant carrier of the present application, where the headrest and shoulder straps are removed;

[0040] FIG. 5 is a schematic rear view of the headrest of the second embodiment of the infant carrier of the present application.

[0041] FIG. 6 is a schematic diagram of a third embodiment of the infant carrier of the present application, where an outer contour of the headrest is shown in dashed lines and parts obscured by the headrest are shown;

[0042] FIG. 7 is a schematic rear view of the headrest of the third embodiment of the infant carrier of the present application;

[0043] FIG. 8 is a schematic rear view of the headrest of a fourth embodiment of the infant carrier of the present application;

[0044] FIG. 9 is a schematic rear view of the headrest of a fifth embodiment of the infant carrier of the present application;

[0045] FIG. 10 is a schematic rear view of the headrest of a sixth embodiment of the infant carrier of the present application;

[0046] FIG. 11 is a schematic rear view of the headrest of a seventh embodiment of the infant carrier of the present application;

[0047] FIG. 12 is a schematic rear view of the headrest of an eighth embodiment of the infant carrier of the present application;

[0048] FIG. 13 is a schematic rear view of the headrest of a ninth embodiment of the infant carrier of the present application;

[0049] FIG. 14 is a schematic rear view of the headrest of a tenth embodiment of the infant carrier of the present application;

[0050] FIG. 15 is a schematic diagram of an eleventh embodiment of the infant carrier of the present application, where the headrest is removed;

[0051] FIG. 16 is a schematic rear view of the headrest of the eleventh embodiment of the infant carrier of the present application; [0052] FIG. 17 is a schematic side view of the eleventh embodiment of the infant carrier of the present application;

[0053] FIG. 18 is a schematic diagram of a twelfth embodiment of the infant carrier of the present application, where the headrest is removed;

[0054] FIG. 19 is a schematic side view of the twelfth embodiment of the infant carrier of the present application;

[0055] FIG. 20 is a schematic rear view of the headrest of the twelfth embodiment of the infant carrier of the present application;

[0056] FIG. 21 is a schematic diagram of a thirteenth embodiment of the infant carrier of the present application, where the headrest is removed;

[0057] FIG. 22 is a front view schematic diagram of a seat cushion for a child safety seat according to a fourteenth embodiment of the present application, where a headrest portion of the seat cushion is in a first position;

[0058] FIG. 23 is a rear view schematic diagram of the seat cushion according to the fourteenth embodiment in the state of FIG. 22;

[0059] FIG. 24 is a front view schematic diagram of the seat cushion according to the fourteenth embodiment of the present application, where the headrest portion is in a second position;

[0060] FIG. 25 is a rear view schematic diagram of the seat cushion according to the fourteenth embodiment in the state of FIG. 24;

[0061] FIG. 26 is a front view schematic diagram of the seat cushion for the child safety seat according to a fifth embodiment of the present application, where the headrest portion of the seat cushion is located at an intermediate position between the first position and the second position;

[0062] FIG. 27 is a schematic front view of a separate seat cushion body according to the fourteenth embodiment of the present application;

[0063] FIG. 28 is a schematic rear view of the separate seat cushion body according to the fourteenth embodiment;

[0064] FIG. 29, FIG. 30, and FIG. 31 illustrate schematic diagrams of a neck portion of the seat cushion body including a neck reinforcing plate according to sixteenth, seventeenth, and eighteenth embodiments of the present application, respectively;

[0065] FIG. 32 is a schematic front view of a separate headrest portion according to an embodiment of the present application;

[0066] FIG. 33 is a schematic rear perspective view of the headrest portion according to the embodiment of the present application in FIG. 32;

[0067] FIG. 34 is a schematic diagram showing a manner in which the neck portion of the seat cushion body fits into the headrest portion of FIG. 33 according to an embodiment of the present application,

[0068] FIG. 35 is a schematic diagram showing, separately, the fitting relationship of the positioning structure shown in FIG. 34;

[0069] FIG. 36 is a schematic view of the neck portion of the seat cushion body according to a nineteenth embodiment of the present application;

[0070] FIG. 37 shows a schematic front view of the headrest portion according to a twentieth embodiment of the present application;

[0071] FIG. 38 shows a schematic front view of the headrest portion according to a twenty-first embodiment of the present application;

[0072] FIG. 39 is a schematic front view of the seat cushion body according to the twentieth and the twenty-first embodiments;

[0073] FIG. 40 is a schematic rear view of the seat cushion body of FIG. 39;

[0074] FIG. 41 schematically shows an infant carrier according to the present application, including a child safety seat and the seat cushion according to an embodiment of the present application, where the headrest portion of the seat cushion is at the first position;

[0075] FIG. 42 schematically shows a state in which the headrest portion of the seat cushion is raised to the second position of the infant carrier in FIG. 41.

List of reference signs:

1 Infant carrier

10 Headrest

110 Shoulder strap hole

120 Pocket

140 First attachment portion

150 Second attachment portion

160 Constraining ring

170 Connecting hole

2 Safety belt

20 Shoulder strap

21 Adjusting strap

23 Crotch strap

25 Buckle

30 First connecting member

310 Adjusting member 311 Adjusting hole

312 Securing arm

320 Connecting strap

321 First securing portion

330 Connecting sheet

340 Connecting portion

350 Second securing portion

360 Steering member Second connecting member

410 Adjusting strap

411 Hole

412 Connecting ring of the adjusting strap

420 Buckle

430 Adjusting member

431 Adjusting hole

432 Connecting portion

433 Positioning portion

440 Connecting ring

450 Connecting member

451 First arm

452 Second arm

453 Notch 0 Backrest Infant carrier

10S Child safety seat

IIS Seat portion

12S Backrest portion

14S Shoulder strap

16S Crotch strap

18S Engagement latch 0S Seat cushion

110S Seat cushion body

111S Neck portion of the seat cushion body

112S Shoulder side pad 113S Neck reinforcing plate

114S Shoulder strap through hole

116S Crotch strap through hole

118S Lifting strap

119S Seat cushion body opening

120S Headrest portion

12 IS Top opening

122S Headrest side pad

123S Bottom opening

124S First back covering layer

125S Second back covering layer

126S First hook and loop portion

127S Second hook and loop portion

128S Concave portion on the inner side of the headrest portion

129S Neck portion of the headrest portion

130S Sliding adjustment strap

132S Convex line structure

134S End portion

1408 Connecting component

142S Connecting portion

144S Positioning portion

146S Engagement hole

148S Fixing line of the connecting portion

DETAILED DESCRIPTION

[0076] In order to explain the overall concept of the present application more clearly, a detailed description will be given below in conjunction with the accompanying drawings in the description by way of example.

[0077] It should be noted that many specific details are set forth in the following description to fully understand the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0078] In addition, in the description of the present application, it should be understood that the terms "center", "on", "under", "front", "back", "left", "right", "vertical", "horizontal" ", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only intended to facilitate the description of the present application and simplify the description, and do not indicate or imply that the apparatus or component referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0079] In the present application, unless otherwise expressly stated and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated into one-piece. It may be directly connected or indirectly connected through an intermediate medium. It may be the internal connection between two components or the relationship of interaction between two components. However, the indication of a direct connection indicates that the two connected bodies do not establish a connection relationship through a transition structure, but are connected through only a connection structure to form a whole. For those of ordinary skill in the art, the specific meanings of the above terms in the present application may be understood according to specific circumstances.

[0080] In the present application, unless otherwise expressly stated and limited, a first feature being "on" or "below" a second feature may mean that the first feature and second feature are in a direct contact, or the first feature and second feature are in an indirect contact through an intermediary. In the description of the present specification, description referred to the terms "an embodiment", "some embodiments", "an example", "specific examples" or "some examples", etc. means that specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present description, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0081] The present application provides an infant carrier 1, which can be used by an infant or a child to sit in. The infant carrier 1 may be a baby cradle, a child safety seat, a stroller or other infant carriers. A first embodiment of the present application will be described below.

[0082] As shown in FIG. 1 and FIG. 2, the infant carrier 1 may include: a backrest 50; a headrest 10 formed with a shoulder strap hole 110; and a safety belt 2 attached to the seat shell 1. The safety belt 2 may include a shoulder strap 20 and an adjusting strap 21. The adjusting strap 21 is not necessary and may be removed. The shoulder strap 20 may extend through the shoulder strap hole 110. The back of the headrest 10 may be provided with a first connecting member 30, and the front of the backrest 50 may be provided with a second connecting member 40. The first connecting member 30 is attached to the second connecting member 40 in a height- adjustable manner.

[0083] The number of shoulder straps 20 may be configured as two. The two shoulder straps 20 correspond to the two shoulder parts of the child. The front sides of the two shoulder straps 20 may be detachably engaged with a crotch strap 23 of the infant carrier, for example, by means of a buckle 25, so that neither an outwardly pulling movement of the adjusting straps 21 nor an inwardly retracting movement of the adjusting straps 21 is permitted in a locked state. The structures of the safety belt 2 and the buckle 25 are commonly known in the art and will not be described in detail herein.

[0084] The backrest 50 extends generally vertically. Optionally, the backrest 50 may be tilted slightly backward. The headrest 10 may be provided at a higher position of the backrest 50 to support and protect the passenger's head. The shoulder straps 20 may be formed into two pieces, which are symmetrically arranged at the front of the backrest. The lower end of the shoulder strap 20 may be secured to a seat cushion of the infant carrier 1, and the upper end of the shoulder strap 20 may be secured to the backrest 50 of the infant carrier 1. The shoulder strap 20 may slide relative to the shoulder strap hole 110, thereby adjusting a length exposed to the front of the infant carrier 1. The shoulder straps 20 may be used to restrain the passenger's shoulders, thereby protecting the passenger's safety.

[0085] The shoulder strap hole 110 may be provided at a lower position of the headrest 10 so as not to hinder the headrest 10 from supporting the passenger's head. In this embodiment, the first connecting member 30 may be one of a male hook and loop tape and 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. It may be understood that a hook and loop tape typically consists of two parts, the surface formed with hooks may typically be referred to as a male tape and the surface formed with loops may typically be referred to as a female tape. As shown in FIG. 3, the first connecting member 30 and the second connecting member 40 may be formed into squares with equal areas, and the side length of the square 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 also be formed into squares of different sizes. For example, the area of the first connecting member 30 is smaller than the area of the second connecting member 40. Specifically, the side length of the first connecting member 30 may be, for example, a half of the side length of the second connecting member 40, and the present application is not limited thereto. The first connecting member 30 and the second connecting member 40 may be of other shapes, such as rectangular, oval, circular, etc. [0086] As shown in FIG. 1 and FIG. 2, when the headrest 10 is provided at a lower position and a higher position, since the shoulder strap hole 110 are provided on the headrest 10, the upper end of the shoulder strap 20 move with the movement of the headrest 10, so that the position of the shoulder strap 20 can also be adjusted according to the height of the passenger, and such a structure allows for a better adaptability and convenient operation of the infant carrier 1.

[0087] A second embodiment of the present application will be described below.

[0088] Referring to FIG. 4 and FIG. 5, the first connecting member 30 may be an adjusting member 310. Aplurality of adjusting holes 311 may be formed penetrating the adjusting member 310. The adjustment member 310 may be a PE board. As shown in FIG. 5, four adjusting holes 311 may be formed on the adjusting member 310, and every two adjusting holes 311 form a row. Other numbers of adjusting holes 311 may also be formed on the adjusting member 310. The adjusting member 310 may be engaged with the rear surface of the headrest 10 at the outer periphery, while only maintain contact with the headrest 10 at an intermediate position (such as the position where the adjusting holes 311 are located), and may allow a certain gap between the intermediate position and the headrest 10 when a force is applied.

[0089] The second connecting member 40 may be an adjusting strap 410. One end of the adjusting strap 410 may be secured to the backrest 50, and the other end of the adjusting strap 410 may be fixedly or detachably connected to the backrest 50. When the other end of the adjusting strap 410 is configured to be detachably connected to the backrest 50, the headrest 10 may be detached from the backrest 50 so that operations such as cleaning, maintenance, replacement, and the like can be easily performed. The adjusting strap 410 is extended between the adjusting member 310 and the headrest 10 from one of the adjusting holes 311 and out of the adjusting member 310 from another adjusting hole 311 such that the adjusting member 310 exerts a holding force on the adjusting strap 410. When the number of adjusting holes 311 in each row is set to more than 2 (e.g., 4), the adjusting strap 410 may be extended in and out of the individual adjusting holes 311 in the row in sequence, so that the magnitude of the holding force can be changed. As shown in FIG. 4, the adjusting strap 410 may be provided as two pieces side-by-side (although only one adjusting strap 410 is shown in FIG. 5, it may be understood that the two adjusting holes 311 on the right side may also be provided with an adjusting strap 410), and the present application is not limited thereto. And the number of the adjusting strap 410 may also be set to one or more than two.

[0090] Referring to FIG. 5, as the adjusting strap 410 is extended into and out of the adjusting holes 311, the adjusting strap 410 is subject to a holding force (or known as a clamping force) from the adjusting member 310. Optionally or additionally, a width of the adjusting holes 311 is set close to a thickness of the adjusting strap 410 such that the adjusting strap 410 is subject to a holding force from the adjusting holes 311. In addition, the portion of the adjusting strap 410 disposed between the adjusting member 310 and the headrest 10 may also be subject to a holding force provided by both the adjusting member 310 and the headrest 10. When a height of the headrest 10 needs to be adjusted, the headrest 10 is moved by overcoming the resistance (holding force) of the adjusting member 310 and the adjusting holes 311 against the headrest 10.

[0091] A third embodiment of the present application will be described below

[0092] Referring to FIG. 6-FIG. 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 secured to the headrest 10. The other end of the connecting strap 320 may be provided with the connecting sheet 330. The connecting sheet 330 may be formed of hard plastic and may be generally perpendicular to the connecting strap 320.

[0093] The second connecting member 40 may include an adjusting strap 410 and a buckle 420. One end of the adjusting strap 410 may be secured to the backrest 50, and the other end of the adjusting strap 410 may be fixedly or detachably connected to the backrest 50. When the other end of the adjusting strap 410 is configured to be detachably connected to the backrest 50, the headrest 10 may be detached from the backrest 50 so that operations such as cleaning, maintenance, replacement, and the like can be easily performed. The two ends of the adjusting strap 410 are located at different heights. The buckle 420 is movably provided on the adjusting strap 410. Sufficient holding force can be formed between the adjusting strap 410 and the buckle 420. The connecting strap 320 may pass through the buckle 420, and the connecting sheet 330 may cooperate with the buckle 420 to prevent the headrest 10 from being separated from the backrest 50.

[0094] Specifically, as shown in FIG. 6, the buckle 420 may be a buckle with three holes. The buckle with three holes may be understood as a fastener whose shape is close to the Chinese character " B " with three holes arranged in a vertical direction. The adjusting strap 410 may pass through one hole of the buckle with three holes (for example, the lowermost hole), and a size of the connecting sheet 330 is larger than a size of the hole of the buckle with three holes. In this way, since the connecting sheet 330 is blocked by the buckle 420 on a rear side of the buckle 420, the headrest 10 is attached to the backrest 50 and cannot be detached.

[0095] In this embodiment, the connecting strap 320, the connecting sheet 330, the adjusting strap 410, and the buckle 420 may all be symmetrically formed as two. The adjusting strap 410 is oriented substantially vertically to provide a range of height adjustability of the headrest 10. The connecting strap 320 may have a shorter length which may be configured to facilitate the connecting sheet 330 passing through the buckle 420 without causing the headrest 10 to shake significantly relative to the backrest 50. [0096] The connecting sheet 330 may be formed into a rectangular piece. Optionally, the connecting sheet 330 is configured to pass through the holes of the buckle with three holes by being rotated at a specific angle, thereby enabling the headrest 10 to be separated from the backrest 50.

[0097] A fourth embodiment of the present application will be described below. The fourth embodiment is similar to the second embodiment, and only the different parts will be described below. [0098] Referring to FIG. 8, the adjusting strap 410 is formed with a plurality of holes 411 along its length direction. These holes 411 may cause the surface of the adjusting strap 410 to form certain undulations, thereby increasing the holding force between the adjusting strap 410 and the connecting sheet 330. Although only one adjusting strap 410 is shown in FIG. 8, preferably, two adjusting straps 410 are arranged side by side. The adjusting members 310 may be formed as two side by side at the same height. The adjusting piece 310 may be connected to the headrest 1 at only one side, that is, the adjusting member 310 may be formed with a connecting portion 340 at one side only. Optionally, the two adjusting members 310 are formed with connecting portions 340 at the inner side only (the side close to each other). In this way, the other sides (the upper side, the lower side, and the outer side) of the adjusting member 310 may be moved away from the headrest 10, thereby allowing the headrest 10 to be separated by a limited distance relative to the backrest 50, which facilitates ease of operation when adjusting the height of the headrest 10. The use of two separated adjusting members 310 saves material and keeps the headrest 10 stably attached to the backrest 50 when only one side of the adjusting member 310 is secured to the headrest 10. The above structure in this embodiment may also be applied to other embodiments.

[0099] A fifth embodiment of the present application will be described below. The fifth embodiment is similar to the second embodiment, and only the different parts will be described below. [00100] Referring to FIG.9, although only one adjusting strap 410 is shown in FIG. 9, preferably, two adjusting straps 410 are arranged side by side. The adjusting members 310 may be formed as two side by side at the same height. The headrest 10 may include pockets 120. A portion of each adjusting member 310 (the outer side in FIG. 9) may be inserted into the pocket 120. The pocket 120 is, for example, a sheet covering the headrest 10, where a portion of the periphery of the sheet (e.g., which may be an upper side, a lower side, and a left side of the pocket 120 on the left in FIG. 9) is attached to the headrest 10, and a remaining portion of the periphery (e.g., which may be a right side of the pocket 120 on the left in FIG. 9) is not attached to the headrest 10 so that an opening can be formed. To facilitate insertion of the adjusting member 310 into the pocket 120, the adjusting member may be bendable.

[00101] The headrest 10 may include a securing strap 130. The securing strap 130 may be a fabric strap. One end of the securing strap 130 may be secured to the headrest 10, for example, to a position of the headrest 10 within the pocket 120. The other end of the securing strap 130 may be detachably connected (e.g., by means of a hook and loop tape) to a first surface of the adjusting member 310 (e.g., a surface of the adjusting member 310 facing the backrest 50) to form a first attachment portion 140.

[00102] A portion of the adjusting member 310 and the securing strap 130 in FIG. 9 is shown as a dotted line, which indicates that the portion is blocked by the pocket 120 and is not visible.

[00103] The headrest 10 may be detachably connected to a second surface of the adjusting member 310 (e.g., by means of a hook and loop tape) to form a second attachment portion 150. The second surface is, for example, a surface of the adjusting member 310 facing the headrest 10. That is, the first surface is opposite to the second surface. The second attachment portion 150 may be located substantially at the center of the adjusting member 310. The second attachment portion 150 may be located at other locations as well. Although in FIG. 9, the second attachment portion 150 is formed on a left side of the adjusting hole 311, it may be understood that the second attachment portion 150 may also be formed on a right side of the adjusting hole 311. Through the first attachment portion 140 and the second attachment portion 150, the adjusting member 310 is capable of being separated from the headrest 10, while a stable and reliable connection with the headrest 10 can also be formed and the headrest 10 can be prevented from shaking.

[00104] The second attachment portion 150 in FIG. 9 is shown as a dotted line, which means that the second attachment portion 150 is formed on the surface of the adjusting member 310 facing the headrest 10 and is not visible.

[00105] The adjusting strap 410 may be formed with a plurality of holes 411 along its length direction. These holes 411 may cause the surface of the adjusting strap 410 to form certain undulations, thereby increasing the holding force between the adjusting strap 410 and the connecting sheet 330.

[00106] Although two adjusting members 310 are shown as separate from each other in FIG. 9, it may be understood that the adjusting members 310 may also be formed as a single unit. In this case, pockets 120 may be formed on left and right sides of the integrally formed adjusting member 310, one first attachment portion 140 may be provided on each of two sides, and one second attachment portion 150 may be provided centrally at the center of the adjusting member 310. Alternatively, the adjusting member 310 may be formed with a connecting portion 340 like the fourth embodiment.

[00107] A sixth embodiment of the present application will be described below. The sixth embodiment is similar to the fifth embodiment, and only the different parts will be described below.

[00108] Referring to FIG. 10, in this embodiment, the securing strap 130 may not be formed. A portion of each adjusting member 310 (e.g., a left portion thereof for the left adjusting member 310) may be inserted into the pocket 120 and detachably connected to the headrest 10 to form the first attachment portion 140 by, for example, a button (e.g., a button is provided on the adjusting member 310 and a hole is provided in the pocket 120 at a corresponding location to fit with the button) or a snap fastener, or other elements.

[00109] A portion of the adjusting member 310 and the securing strap 130 in FIG. 10 is shown as a dotted line, which indicates that the portion is obscured by the pocket 120 and is not visible. Likewise, the second attachment portion 150 in FIG. 10 is shown as a dotted line, which indicates that the second attachment portion 150 is formed on the surface of the adjusting member 310 facing the headrest 10 and is not visible.

[00110] The headrest 10 may include a constraining ring 160. The adjusting member 310 may pass through the constraining ring 160 so that the constraining ring 160 constrains and secures the adjusting member 310 to a certain extent. A portion of the adjusting member 310 that passes through the constraining ring 160 and a portion that is inserted into the pocket 120 may have a smaller width (the size in an up-and-down direction as shown in FIG. 10) than other portions, thereby facilitating the adjusting member 310 to be extended through the constraint ring 160 and to be inserted into the pocket 120.

[00111] In this embodiment, by means of the first attachment portion 140 and the second attachment portion 150, the adjusting member 310 is capable of being separated from the headrest 10, while a stable and reliable connection with the headrest 10 can also be formed and the headrest 10 can be prevented from shaking. The first attachment portion 140 disposed within the pocket 120 is less likely to be opened unintentionally, thereby ensuring that the adjustment member 310 will not be accidentally separated from the headrest 10.

[00112] A seventh embodiment of the present application will be described below. The seventh embodiment is similar to the sixth embodiment, and only the different parts will be described below. [00113] Referring to FIG. 11, in this embodiment, a single adjusting member 310 may be formed, but the present application is not limited thereto. The adjusting member 310 may be formed in a rectangular shape (i.e., having a consistent width), but the present application is not limited thereto. Both ends of the adjusting member 310 are detachably connected to the headrest 10 via a first attachment portion (button) 140. Each end of the adjustment member 310 may be provided with two buttons to form a stable fastening force, but the number of buttons is not limited in the present application. Two portions of the first attachment portion (button) 140 are provided at corresponding positions on the adjusting member 310 and the headrest 10.

[00114] Although only one adjusting strap 410 is shown in FIG. 11, this embodiment may have two adjusting straps 410 arranged side by side and symmetrically. The first attachment portion 140 in FIG. 11 is shown as a dotted line, which indicates that the first attachment portion 140 is blocked by the adjusting member 310.

[00115] In this embodiment, the pocket 120, the second attachment portion 150 and the constraining ring 160 may not be provided. For other portions of this embodiment, reference may be made to the sixth embodiment.

[00116] In this embodiment, by means of the plurality of first attachment portions (buttons) 140, the adjusting member 310 is detachable from the headrest 10, while a stable and reliable connection with the headrest 10 can also be formed and the headrest 10 can be prevented from shaking. The operation is easy and the cost is low.

[00117] An eighth embodiment of the present application will be described below. The eighth embodiment is similar to the seventh embodiment, and only the different parts will be described below. [00118] Referring to FIG. 12, in this embodiment, a single adjusting member 310 may be formed, but the present application is not limited thereto. Two securing arms 312 extend from each of the two ends of the adjusting member 310 in a direction perpendicular to a length of the adjusting member 310. Two securing arms 312 extending from each end of the adjusting member 310 extend in opposite directions. In other words, each end of the adjusting member 310 may be formed in a T shape. Connecting holes 170 may be formed on the headrest 10. The number and positions of the connecting holes 170 may correspond to the number and positions of the securing arms 312. Since the adjusting member 310 may be bent, the securing arms 312 may be inserted into the corresponding connecting holes 170 respectively, thereby fixing the position of the headrest 10 through the adjusting member 310. At the same time, the headrest 10 may be separated from the adjusting member 310 through bending the securing arm 312.

[00119] Although only one adjusting strap 410 is shown in FIG. 12, this embodiment may have two adjusting straps 410 arranged side by side and symmetrically. A portion of the securing arm 312 in FIG. 12 is shown as a dotted line, which indicates that the portion of the securing arm 312 extends into the connecting hole 170.

[00120] In this embodiment, buttons may not be provided. For other portions of this embodiment, reference may be made to the seventh embodiment.

[00121] In this embodiment, by means of the fit of the connecting hole 170 and the securing arm 312, the adjusting member 310 is detachable from the headrest 10, while a stable and reliable connection with the headrest 10 can also be formed and the headrest 10 can be prevented from shaking, which is easy to operate.

[00122] A ninth embodiment of the present application will be described below. The ninth embodiment is similar to the seventh embodiment, and only the different parts will be described below. [00123] Referring to FIG. 13, in this embodiment, a single adjusting member 310 may be formed, but the present application is not limited thereto. The adjusting member 310 may be formed in a rectangular shape (i.e., having a consistent width), but the present application is not limited thereto. Both ends of the adjusting member 310 are detachably connected to the headrest 10 via a second attachment portion 150. The second attachment portion 150 may be a hook and loop tape. Each end of the adjusting member 310 may be provided with a hook and loop tape, but the present application does not limit the number of hook and loop tapes. Two portions of the second attachment portion (hook and loop tape) 150 are provided at corresponding positions on the adjusting member 310 and the headrest 10.

[00124] The headrest 10 may include two pockets 120. The two pockets 120 may be disposed at positions corresponding to the two ends of the adjusting member 310 such that the two ends of the adjusting member 310 may be respectively inserted into the two pockets 120. The pocket 120 is, for example, a sheet covering the headrest 10, where a portion of the periphery of the sheet (e.g., which may be an upper side, a lower side, and a left side of the pocket 120 on the left in FIG. 13) is attached to the headrest 10, and a remaining portion of the periphery (e.g., which may be a right side of the pocket 120 on the left in FIG. 13) is not attached to the headrest 10 so that an opening can be formed. To facilitate insertion of the adjusting member 310 into the pocket 120, the adjusting member may be bendable.

[00125] When both ends of the adjusting member 310 are inserted into the two pockets 120, the two second attachment portions 150 may be disposed within the two pockets 120, thereby ensuring that the adjusting member 310 is stably secured to the headrest 10.

[00126] Although only one adjusting strap 410 is shown in FIG. 13, this embodiment may have two adjusting straps 410 arranged side by side and symmetrically. The two ends of the adjusting member 310 in FIG. 13 are shown as dashed lines, which indicates that the two ends of the adjusting member 310 extend into the pockets 120. The second attachment portions 150 in FIG. 13 are shown as dashed lines, which indicates that the second attachment portions 150 are provided on a side of the adjusting member 310 facing the headrest 10, and thus are obscured by the adjusting member 310 and the pockets 120.

[00127] In this embodiment, buttons may not be provided. For other portions of this embodiment, reference may be made to the seventh embodiment.

[00128] In this embodiment, by means of the securing force of the hook and loop tape and the constraint of the pocket 120 exerted on the adjustment member 310, the adjusting member 310 is detachable from the headrest 10, while a stable and reliable connection with the headrest 10 can also be formed and the headrest 10 can be prevented from shaking, which is easy to operate.

[00129] A tenth embodiment of the present application will be described below. The tenth embodiment is similar to the seventh embodiment, and only the different part will be described below. [00130] Referring to FIG. 14, in this embodiment, a single adjusting member 310 may be formed, but the present application is not limited thereto. The adjusting member 310 may be formed in a rectangular shape (i.e., having a consistent width), but the present application is not limited thereto. Both ends of the adjusting member 310 are detachably connected to the headrest 10 via a first attachment portion 140. The first attachment portion 140 may be a button. Each end of the adjustment member 310 may be provided with one button, but the present application does not limit the number of buttons. Two portions of the first attachment portion (button) 140 are provided at corresponding positions on the adjustment member 310 and the headrest 10.

[00131] The headrest 10 may include two pockets 120. The two pockets 120 may be disposed at positions corresponding to the two ends of the adjusting member 310, so that the two ends of the adjusting member 310 may be respectively inserted into the two pockets 120. Each pocket 120 is, for example, a sheet covering the headrest 10, where a portion of the periphery of the sheet (e.g., which may be an upper side, a lower side, and a left side of the pocket 120 on the left in FIG. 14) is attached to the headrest 10, and a remaining portion of the periphery (e.g., which may be a right side of the pocket 120 on the left in FIG. 14) is not attached to the headrest 10 so that an opening can be formed. To facilitate insertion of the adjusting member 310 into the pocket 120, the adjusting member may be bendable.

[00132] When the two ends of the adjusting member 310 are respectively inserted into the two pockets 120, the two first attachment portions 140 may be disposed within the two pockets 120, thereby ensuring that the adjusting member 310 is stably secured to the headrest 10.

[00133] One second attachment portion 150 may also be provided in the middle of the adjusting member 310, but the number of the second attachment portions 150 is not limited in this application. The second attachment portion 150 may be a hook and loop tape.

[00134] Although only one adjusting strap 410 is shown in FIG. 14, this embodiment may have two adjusting straps 410 arranged side by side and symmetrically. The two ends of the adjusting member 310 in FIG. 14 are shown as dashed lines, which indicates that the two ends of the adjusting member 310 extend into the pockets 120. The first attachment portions 140 in FIG. 14 are shown as dashed lines, which indicates that the first attachment portions 140 are provided on the side of the adjusting member 310 facing the headrest 10, and thus are obscured by the adjusting member 310 and the pockets 120. The second attachment portion 150 in FIG. 14 is shown as a dashed line, which indicates that the second attachment portion 150 is provided on the side of the adjusting member 310 facing the headrest 10, and thus is obscured by the adjusting member 310.

[00135] For other portions of this embodiment, reference may be made to the seventh embodiment. [00136] In this embodiment, by means of the securing force of the hook and loop tape and the constraint of the pocket 120 exerted on the adjustment member 310, the adjusting member 310 is detachable from the headrest 10, while a stable and reliable connection with the headrest 10 can also be formed and the headrest 10 can be prevented from shaking

[00137] An eleventh embodiment of the present application will be described below.

[00138] Referring to FIG. 15 and FIG. 16, in this embodiment, the infant carrier 1 may include a headrest 10 and a backrest 50. Adjusting straps 410 may be fixedly arranged on the backrest 50. Both ends of the adjusting strap 410 may be secured to the backrest 50, while other portions of the adjusting strap 410 may be spaced apart from the backrest 50. The adjusting straps 410 may be flexible.

[00139] Optionally, two adjusting straps 410 may be provided side by side on the backrest 50. Optionally, the two adjusting straps 410 are oriented parallel to each other and substantially vertically, and the two adjusting straps 410 are spaced apart by a certain distance. The adjusting straps 410 may be braided straps, but the present application is not limited thereto.

[00140] An adjusting member 430 may be slidably arranged on the adjusting strap 410. The adjusting member 430 may be formed as a sheet, but the application is not limited thereto. The adjusting 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 adjusting holes 431.

[00141] Optionally, the adjusting member 430 includes a connecting portion 432 and two positioning portions 433 located on both sides of the connecting portion 432. The two adjusting straps 410 may be connected to the two positioning portions 433 respectively. Specifically, each adjusting strap 410 may be sequentially extended through two or more adjusting holes 431 on the corresponding positioning portion 433. Each adjusting hole 431 exerts a certain resistance on the adjusting strap 410 through which it passes, which enables the adjusting member 430 to be statically maintained at multiple specific positions on the adjusting strap 410. At the same time, since a size of the adjusting hole 431 is larger than a size of the adjusting strap 410, the position of the adjusting member 430 relative to the adjusting strap 410 may be changed by moving the adjusting strap 410 relative to the adjusting hole 431. The adjusting member 430 may be integrally formed of plastic or resin to prevent the two positioning portions 433 from being out of synchronization due to uneven force during the process of adjusting the height of the headrest 10, but the present application is not limited thereto.

[00142] Referring to FIG. 16, a connecting strap 320 may be fixedly provided on the headrest 10. The connecting strap 320 may be flexible. One end (fixed end) of the connecting strap 320 may be secured to the headrest 10, the other end (free end) of the connecting strap 320 may be detachably connected to the headrest 10, and other portions of the connecting strap 320 may be spaced apart from the headrest 10. A free end of the connecting strap 320 may be detachably attached to the headrest through one of a hook and loop tape, a button, and a buckle, but the present application is not limited thereto. Specifically, a first securing portion 321 may be formed at the free end of the connecting strap 320, a second securing portion 350 may be formed on the headrest 10, and the first securing portion 321 may be connected to the second securing portion 350. The second securing portion 350 may be located above the fixed end of the connecting strap 320, but the present application is not limited thereto. The number of the connecting straps 320 may be less than the number of adjusting straps 410. For example, the headrest 10 may be provided with one connecting strap 320, while the backrest 50 may be provided with two adjusting straps 410, thereby facilitating quick removal of the headrest 10 from the backrest 20 while ensuring that the headrest 10 slides up and down stably.

[00143] The headrest 10 may be provided with a steering member 360. Both ends of the steering member 360 may be fixed to the headrest 10 so that a channel through which the connecting strap 320 may pass is formed between the steering member 360 and the headrest 10. The steering member 360 may be a flexible strap or a flexible rope, but the present application is not limited thereto. By providing the steering member 360, it can prevent the adjusting member 430 from directly contacting an attachment point of the free end of the connecting strap 320 during the movement of the headrest 10, which causes the free end to disconnect from the headrest 10.

[00144] Referring to FIGS. 15 through 17, firstly, the free end of the connecting strap 320 on the headrest 10 passes through a channel formed between the connecting portion 432 of the adjusting member 430 and the backrest 50. Then, the free end of the connecting strap 320 passes through the channel formed between the steering member 360 and the headrest 10. Next, the free end of the connecting strap 320 passes again in an opposite direction through the channel formed between the connecting portion 432 of the adjusting 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 securing portion 321 is detachably connected to the second securing portion 350). Since the headrest 10 and the adjusting piece 430 are detachable, the headrest 10 is free of hard materials such as plastic, making it easy to wash and dry with a washing machine.

[00145] An upper edge of the headrest 10 may be formed into a slope, thereby forming 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 detachment of the connecting strap 320.

[00146] In this embodiment, the adjusting strap 410 may be referred to as a first connecting member and the adjusting member 430 may be referred to as a second connecting member.

[00147] In this embodiment, the height of the headrest 10 can be adjusted relative to the backrest 50 of the infant carrier 1 to accommodate infants or children of different heights. The headrest 10 can be detached from the backrest 50 for easy cleaning.

[00148] A twelfth embodiment of the present application will be described below. It should be noted that the same parts of the twelfth embodiment and the eleventh embodiment will not be described again.

[00149] Referring to FIG. 18, connecting rings 440 may be formed on the backrest 50. The connecting ring 440 may be a flexible strap or a flexible rope, such as a braided strap, but the present application is not limited thereto. Four connecting rings 440 may be formed on the backrest 50, but the present application is not limited thereto. Alternatively, other numbers of connection rings 440 may be formed on the backrest 50, for example, two connecting rings 440.

[00150] Referring to FIG. 19, the headrest 10 may be provided with the adjusting member 430. The structure of the adjusting member 430 may refer to the description in the eleventh embodiment. The connecting portion 432 of the adjusting member 430 may be secured to the headrest 10. Specifically, the connecting portion 432 of the adjusting member 430 may be sewn to the headrest 10. The adjusting strap 410 may pass sequentially through two or more adjusting holes 431 on the adjusting member 430. The positioning portion 433 of the adjusting member 430 may be pivoted or bent relative to the connecting portion 432 so that the adjusting strap 410 may easily pass through the adjusting hole 431.

[00151] Each end of the adjusting strap 410 may be provided with a connecting member 450, which may be formed in a shape similar to the letter "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 be opened or closed, or the notch 453 may be small to prevent the adjusting strap 410 from being disengaged from the notch 453. A stop rib may also be provided at an end near the notch between the first arm 451 and the second arm 452 to prevent the adjusting strap 410 from being disengaged from the notch 453. The stop rib protrudes from the first arm 451 and the second arm 452, and a thickness of the stop rib is greater than a thickness of the adjusting strip. An end of the adjusting strap 410 may pass through the notch 453 and be sleeved on one of the first arm 451 and the second arm 452, and the other of the first arm 451 and the second arm 452 may pass through the connecting ring 440 so as to be detachably connected to the backrest 50.

[00152] Referring to FIG. 20, the adjusting strap 410 is connected to two connecting rings 440 via the connecting members 450 at both ends, and a middle part of the adjusting strap 410 extends through the adjusting hole 431 of the adjusting member 430. In this way, the headrest 10 is detachably connected to the backrest 50. Furthermore, by moving the position of the adjusting strap 410 relative to the adjusting member 430, the position of the headrest 10 relative to the backrest 50 can be adjusted. [00153] A thirteenth embodiment of the present application will be described below. It should be noted that the same parts of the thirteenth embodiment and the eleventh embodiment will not be described again.

[00154] Referring to FIG. 21, this embodiment differs from the eleventh embodiment in that an end of each adjusting strap 410 of this embodiment is provided with a connecting member 450 and the backrest 50 is provided with a connecting ring 440 corresponding to the connecting member 450, such that one end of the adjusting strap 410 is detachably connected to the backrest 50. In this embodiment, the adjusting member 430 may be separated from the headrest 10 and the backrest 50 so that the adjusting member 430 may be removed when cleaning the headrest 10 and the backrest 50.

[00155] In some small seat cushion products known to the inventor, the headrest and the small seat cushion are connected in a relatively fixed position, for example, the two are integrated into one unit, or connected by detachable snap buttons or hook and loop fasteners. In this way, a height position of the headrest cannot be adjusted according to a height of the child's head, resulting in inconvenience in use. In addition, some small seat cushions used in infant or child carriers are equipped with a headrest of which the position is adjustable, but the headrest and the small seat cushion are connected to the seat respectively. Therefore, when they need to be disassembled and cleaned, it is necessary to remove the small seat cushion separately first, and then remove the headrest connected to the seat, which will also cause inconvenience in use.

[00156] The present application provides a seat cushion (or be referred to as "small seat cushion") that can be used by infants or children. The seat cushion can be detachably connected to, for example, an infant or child carrier such as a child safety seat, a stroller, a baby cradle, a baby sling, or a crib, and can be used as a part of the carrier. The seat cushion includes a seat cushion body (or main body) and a headrest connected to the seat cushion body. The seat cushion may be made primarily of flexible material and have a shape adapted to the carrier to which it is applied. In addition, the seat cushion according to the present application can adjust the position of the headrest relative to the seat cushion body according to actual needs, so that it can be adapted to the use of children of different heights. Such position adjustment can be achieved through a positioning structure between the seat cushion body and the headrest, which can also serve as a connection structure between the seat cushion body and the headrest.

[00157] FIGS. 22 to 25 illustrate a schematic view of a seat cushion 100S according to a first embodiment of the present application. FIG. 22 is a schematic front view of the seat cushion of this embodiment when the headrest portion is in the lowest position (or be referred to as a "first position") relative to the seat cushion portion. FIG. 23 is a schematic rear view of the seat cushion in the state of FIG. 22. FIG. 24 is a schematic front view of the seat cushion of this embodiment when the headrest portion is in the highest position (or be referred to as a "second position") relative to the seat cushion portion. FIG. 25 is a schematic rear view of the seat cushion in the state of FIG. 24.

[00158] Referring first to FIG. 22 and FIG. 23, the seat cushion 100S includes a seat cushion body 110S and a headrest portion 120S disposed on the upper portion thereof, and the headrest portion 120S is in the lowest position (i.e., the first position) relative to the seat cushion body 110S . At this position, the bottom of the headrest 120S is in close contact with an upper side of the seat cushion body 110S. As can be seen from the figure, a pair of shoulder side pads 112S may be included on the two sides of the upper portion of the seat cushion body 110S , which may be rested on both sides of the shoulders of the passenger when in use. Headrest side pads 122S are provided on both sides of the headrest portion 120S, which may be rested on both sides of the head of the passenger when in use. As mentioned above, according to the present application, the seat cushion body 110S and the headrest portion 120S are connected to each other through the positioning structure between them to form an integral seat cushion 100S. In the state of FIG. 22 and FIG. 23, the positioning structure is located inside the headrest 120S and is not visible. The positioning structure will be described in detail later.

[00159] In the seat cushion 100S according to this embodiment, the position of the headrest portion 120S can be adjusted and positioned within a certain range relative to the seat cushion body 110S with the aid of the positioning portion described above. Referring to FIG. 24 and FIG. 25, a state when the headrest portion 120S of the seat cushion 100S is raised and positioned to a highest position (i.e., the second position) is shown. As can be seen in conjunction with FIG. 22 and FIG. 24, according to the present embodiment, when the headrest portion 120S is elevated relative to the seat cushion body 110S, a neck portion of the seat cushion body 11 IS protruding from an end of the seat cushion body 110S may be seen underneath the headrest portion 120S, where the neck portion of the seat cushion body 11 IS extends into an interior of the headrest portion 120S from the bottom opening 123S (see FIG. 25) of the headrest portion 120S. When the headrest portion 120S reaches the second position (see FIG. 24), which is a maximum limit position to which the headrest portion 120S may be adjusted, the upper part of the neck portion of the seat cushion body 11 IS is still inside the headrest portion 120S. A part of a sliding adjustment strap 130S arranged vertically may be seen at the neck portion of the seat cushion body 11 IS. The sliding adjustment strap 130S is part of the positioning structure of the seat cushion 100S of the present application. Thus, during use of the seat cushion 100S of the first embodiment of the present application, a part of the neck portion of the seat cushion body 111S, as well as a part of the sliding adjustment strap 130S thereon, will always be located inside the headrest portion 120S.

[00160] According to this embodiment, the sliding adjustment strap 130S is operably connected to a connecting component provided inside the headrest portion 120S, which is another part of the positioning structure, and the connecting component fits with the sliding adjustment strap 130S to realize the positional adjustment of the headrest portion 120S. In FIG. 24, it may also be seen that a plurality of laterally arranged convex line structures 132S are provided on the sliding adjustment strap 130S to assist vertical positioning of the headrest portion 120S. The construction of the sliding adjustment strap 130S is illustrated in detail in FIG. 27 and FIG. 35.

[00161] In addition, according to this embodiment, a lifting strap 118S with a predetermined length is provided at the top of the neck portion of the seat cushion body 11 IS, so that the lifting strap 118S may be exposed at the top of the seat cushion 100S when the headrest portion 120S is in the first position, as shown in FIG. 22. Specifically, the lifting strap 118S at this time may penetrate an inner side of the headrest portion 120S and extend out from a top opening 12 IS thereon. The lifting strap 118S is mainly used to lift the neck portion of the seat cushion body 11 IS upward to keep it in an upright state, so as to facilitate moving the headrest portion 120S downward. In addition, the lifting strap 118S makes it easy to reach and hang the seat cushion 100S. When the headrest portion 120S is in the second position, the lifting strap 118S may be retracted into the headrest portion without being exposed, as shown in FIG. 24 and FIG. 25, at which time the user may reach his/her hand through the top opening 121S of the headrest portion 120S to grasp and pull up the lifting strap 118S, so as to adjust the headrest portion 120S downward. However, the present application is not limited thereto. For example, in a second embodiment of the present application shown in FIG. 26, the lifting strap 118S has sufficient length, so that even when the headrest 120S is in the second position, the lifting strap 118S may still extend out from the top opening 12 IS of the headrest portion. The seat cushion of this embodiment is not otherwise different from the aforementioned first embodiment except for the difference regarding the lifting strap 118S. In FIG. 26, an intermediate position where the headrest portion 120S of this embodiment is located between the first position and the second position is shown by solid lines, while the dotted lines indicate that the headrest portion 120S is in the second position. As can be seen, during use of the seat cushion 100S of this embodiment, the lifting strap 118S will always be exposed at the top of the seat cushion 100S, which prevents the lifting strap 118S from being wound during a moving adjustment process of the headrest portion 120S. The top opening 121 S of the headrest portion 120S has an effect of maintaining the position and orientation of the lifting strap 118S during this process. In addition, two mutually opposite moving adjustment directions of the headrest portion 120S are shown with double arrows in FIG. 26. While in other embodiments of the present application, for example, the seat cushions of the embodiments shown in FIGS. 37 to 40 do not include the lifting strap, and these embodiments will be described in detail later.

[00162] It can also be seen in FIG. 23 and FIG. 25 that a flexible first back covering layer 124S and a flexible second back covering layer 125S are provided on a rear side of the headrest portion 120S of the seat cushion 100S according to the first embodiment to cover an internal structure of the headrest portion 120S, which may include the aforementioned other part of the positioning structure and will be described in detail later with reference to FIGS. 33 to 35.

[00163] Additionally, the seat cushion according to the present application may be connected to the carrier via strap components on the carrier to which it is applied, wherein the strap components may generally include a shoulder strap and a crotch strap. To this end, the seat cushion body 110S in the seat cushion 100S according to the present application may include a shoulder strap through hole 114S and a crotch strap through hole 116S (see FIGS. 24 and 25) to fit with a shoulder strap and a crotch strap of the carrier, respectively, so as to connect the seat cushion integrally to the carrier. When the seat cushion 100S needs to be disassembled for cleaning or replaced, the connection between these strap components and the seat cushion body 110S may be released, and the seat cushion including the seat cushion body 110S and the headrest portion 120S can be integrally detached from the carrier.

[00164] As previously described, to realize height adjustment and positioning of the headrest portion of the seat cushion according to the present application, the seat cushion of the present application includes a positioning structure connected to both the seat cushion body and the headrest portion. The positioning structure may include a first positioning part and a second positioning part that fit with each other. The first positioning part may be provided to the seat cushion body, and the second positioning part may be provided to the headrest portion. The positioning structure is described in detail below with reference to FIGS. 27 to 36.

[00165] FIG. 27 is a schematic front view of the separate seat cushion body according to the first embodiment of the present application; FIG. 28 is a schematic rear view of the separate seat cushion body according to the first embodiment, with the neck portion and adjacent portions of the seat cushion body indicated by dashed circles; FIGS. 29 to 31 schematically illustrate three different embodiments of the neck portion of the seat cushion body including a neck reinforcing plate; FIG. 32 is a schematic front view of a separate headrest portion according to an embodiment of the present application, and FIG. 33 is a schematic rear perspective view of the headrest portion according to the embodiment of the present application in FIG. 32; FIG. 34 is a schematic diagram showing a manner in which the neck portion of the seat cushion body fits into the headrest portion of FIG. 33 according to an embodiment of the present application, and FIG. 35 is a schematic diagram showing, separately, the fitting relationship of the positioning structure shown in FIG. 34; FIG. 36 is a schematic view of the neck portion of the seat cushion body according to a sixth embodiment of the present application. [00166] Referring to FIGS. 27 and 28, and in conjunction with reference to the preceding FIGS. 24 to 26, according to the first and second embodiments of the present application, the first positioning part of the positioning structure is the sliding adjusting strap 130S provided on the neck portion of the seat cushion body 11 IS, which fits with the second positioning part (a connecting member in the present embodiment) provided on the headrest portion 120S to constitute the positioning structure. Positioning of the headrest portion 120S can be achieved through friction or a limiting structure between the first positioning part and the second positioning part. The sliding adjustment straps 130S may include a pair of elongate sliding adjustment straps substantially parallel and spaced apart by a predetermined distance, which are disposed along a vertical direction on a front surface of the neck portion of the seat cushion body 11 IS, and each end 134S of the pair of the sliding adjustment straps 130S is reliably secured to the neck portion of the seat cushion body 11 IS. The sliding adjustment strap 130S may be made of fabric, or may be made of a plastic sheet with flexibility and surface roughness, and a plurality of convex line structures 132S are arranged at a predetermined interval on the sliding adjustment strap 130S along a transverse direction to assist in positioning in conjunction with the connecting member. However, the present application is not limited thereto. For example, the number of sliding adjustment straps 130S may be one or more than three, and the sliding adjustment strap 130S may not be provided with the convex line structures, but may be provided with other protruding structures or transverse grooves to assist positioning. Alternatively, friction or adhesion to the connecting component may be increased by altering material surface properties of the sliding adjusting strap 130S to improve positioning performance.

[00167] As mentioned above, the second positioning part of the positioning structure according to this embodiment is the connecting component 1408 provided inside the headrest portion 120S. Referring to FIG. 33, the connecting component 1408 is disposed substantially in the transverse direction on the inner side of the headrest portion 120S and includes a connecting portion 142S located at the center and a pair of positioning portions 144S located on the left and right sides of the connecting portion 142S, which are likewise spaced apart by a predetermined distance as described above. The connecting component 1408 includes at least two through holes, through which the corresponding sliding adjustment strap 130S may be extended. Specifically, each positioning portion 144S in the connecting component 1408 includes at least one through hole, preferably a pair of through holes, to present, for example, a structure with two holes like the Chinese character " H ". The shape and arrangement of these engagement holes 146S are suitable for the aforementioned pair of sliding adjustment straps 130S to be extended therein and slide freely, as can be seen in the schematic diagram of the connection fit between the sliding adjustment straps 130S and the connecting component 1408 shown in FIG. 35. In addition, the connecting member 1408 may be integrally made of a single plastic sheet, or the connecting portion 142S and the positioning portion 144S of plastic material may be formed individually and then integrally connected to the connecting component 1408 by hot pressing or mechanical means. However, it should be noted that the implementation manner of the connecting component of the present application is not limited thereto. For example, a connecting component containing three or more positioning portions may be used, or the connecting components themselves may be arranged in pairs. The positioning portion is not limited to a doublehole structure, but may be formed by a pair of metal rings or rings of other materials, or other similar parts or structures that can be locked on the convex lines, protrusions or grooves of the sliding adjustment strap to a certain extent, as long as the sliding adjustment strap and the connecting component can be slidably fitted to one another and a certain degree of stopping effect can be maintained at multiple positions.

[00168] More specifically, according to an embodiment of the present application, the connecting component 1408 may include a pair of positioning portions 144S arranged in a horizontal direction and separated by a predetermined distance, and the sliding adjustment straps 130S may include a pair of sliding parts arranged in parallel and separated by a predetermined distance. Each of the sliding adjustment straps 130S may include two end portions 134S secured to one of the seat cushion body 110S or the headrest portion 120S and an overhanging section between the two end portions 134S. Each positioning portion 144S is secured to the other of the seat cushion body 110S or the headrest portion 120S. The overhanging sections of the pair of sliding adjustment straps 130S are respectively penetrated into the corresponding one of the pair of positioning portions 144S.

[00169] In addition, the connecting component 1408 is secured to the headrest portion 120S through the connecting portion 142S, and a pair of positioning portions 144S including two engagement holes 146S are provided in a cantilevered manner on both sides of the connecting portion 142S (i.e., the positioning portions 144S are movable free ends relative to the connecting portion 142S). The attachment portion 142S may be secured to the inner side of the headrest portion 120S through mechanical connection or sewing, and may form a square fixing line 148S of the connecting portion, as shown in FIG. 33 and FIG. 35. The two positioning portions 144S may respectively pivot around the fixing line 148S (suture) of connection part on one side relative to the connecting portion 142S, which can facilitate the penetrating of the sliding adjustment straps 130S during the production and assembly process. However, the present application is not limited thereto, and the two end portions of the connecting component 1408 (i.e., free end portions of the two positioning portions 144S) may also be secured to the headrest portion together with the connecting portion 142S instead of being formed into an overhanging state, as long as the aforementioned slidable fit between the positioning portions 144S and the sliding adjustment strap 130S can be ensured.

[00170] It should be understood here that, as mentioned above, FIG. 27 and FIG. 28 show a separate seat cushion body 110S with only the sliding adjustment strap 130S provided thereon according to this embodiment, and FIG. 32 and FIG. 33 show a separate headrest portion 120S according to this embodiment, in which only a separate connecting member 1408 is provided. However, in actual products, the sliding adjustment strap 130S and the connecting component 1408 are fitted and connected together, as shown in FIG. 34 and FIG. 35. Moreover, the fitting connection between the sliding adjustment strap 130S and the connecting component 1408 in the seat cushion 100S needs to be completed during a processing and assembling stage of the seat cushion product. For example, the sliding adjustment strap 130S is extended into the positioning portion 144S of the connecting component before being secured to the neck portion of the seat cushion body 11 IS of the seat cushion body 110S. Accordingly, a separate form of the two portions of the seat cushion in the foregoing FIGS. 27, 28, 32, and 33 is merely a schematic illustration for ease of description, and the separate form does not exist in practice.

[00171] In addition, although the seat cushion body 110S and the headrest portion 120S of the seat cushion 100S according to this embodiment are connected together through a positioning structure including a sliding adjustment strap 130S and a connecting component 1408, this does not mean that the seat cushion body 110S and the headrest portion 120S cannot be detached. For example, the sliding adjustment strap 130S may be reliably secured to the neck portion of the seat cushion body using a detachable fastening apparatus so that the headrest portion 120S may be removed from the seat cushion body 110S along with the sliding adjustment strap 130S when necessary.

[00172] According to the present application, for smoother adjustment and positioning via up-and- down sliding of the headrest portion in the seat cushion 100S without being hindered by bending or curling of the neck portion of the seat cushion body 11 IS, a neck reinforcing plate 113S may be provided on the back side or inner side of the neck portion of the seat cushion body 11 IS to improve the rigidity of this portion. The neck reinforcing plate 113S may be formed of a plastic sheet or other rigid sheet. Referring to FIG. 29, FIG. 30 and FIG. 31, three embodiments where a back of the neck portion of the seat cushion body 11 IS includes the reinforcing plate 113S are respectively shown. FIG. 29 illustrates a third embodiment of the present application, which differs from the first embodiment mainly in that a neck reinforcing plate 113S is provided on the back of the neck portion of the seat cushion body 11 IS and the upper side of the shoulder strap through holes 114S. FIG. 30 illustrates a fourth embodiment of the present application, which differs from the third embodiment in that the neck reinforcing plate 113S and the lifting strap 118S are integrated, so that the lifting strap and the neck are not easily bent or wound during sliding adjustment of the headrest portion relative to the seat cushion body. In this case, both the lifting strap 118S and the neck reinforcing plate 113S may be made of rigid material. In other embodiments, the lifting strap 118S may be made of hard material, but it may also be made of flexible material with certain toughness. FIG. 31 illustrates a fifth embodiment of the present application, which differs from the third embodiment in that the area of the neck reinforcing plate 113S is expanded to include the shoulder strap through holes 114S, so that the neck reinforcing plate 113S includes shoulder strap grooves, which allows the area of the shoulder strap through holes 114S to be reinforced along with the neck portion of the seat cushion body 111S. In addition, in this embodiment, since the area of the neck reinforcing plate 113S extends downward, the lifting strap 118S is not provided on the top of the neck 11 IS of the seat cushion body. However, the present application is not limited thereto.

[00173] Referring back to FIG. 33 and FIG. 34, and in conjunction with reference to FIG. 23 and FIG. 25, the back structure of the headrest portion according to the foregoing embodiments will now be further described. In FIG. 33 and FIG. 34, the first back covering layer 124S and the second back covering layer 125S on the rear side of the headrest portion 120S are in an open or semi-open state. The connecting component 1408 located on a front inner surface of the headrest portion 120S may be seen in FIG. 33, and the connecting member 1408 may be disposed on an inner surface of a concave portion 128S on the inner side of the headrest portion 120S. The concave portion 128S of the headrest portion 120S is suitable for accommodating a corresponding neck portion of the seat cushion body 11 IS, and a reinforcing layer may be provided on the inner surface of the concave portion 128S to improve the connection strength between the connecting component 1408 and the inner side of the headrest portion. Due to the existence of the concave portion 128S of the headrest portion 120S, the overlapping part of the headrest portion 120S and the neck portion of the seat cushion body 11 IS will not bulge during the process of moving and adjusting the position of the headrest part 120S, which can improve the comfort of an infant or a child when using the seat cushion 100S. In practice, the first back covering layer 124S and the second back covering layer 125S may surround from both sides and overlap on the rear side of the headrest portion. The first back covering layer 124S and the second back covering layer 125S are secured to each other by using a first hook and loop portion 126S on the first back covering layer 124S and a second hook and loop portion 127S on the second back covering layer 125S, and cover the neck portion of the seat cushion body 11 IS provided on the concave portion 128S on the inner side of the headrest portion 120S, as shown by FIG. 34, so that the headrest portion 120S may be connected and sleeved on the neck portion of the seat cushion body 11 IS. This structure can enhance the stability of the connection between the headrest portion 120S and the seat cushion body 110S. In addition, the top opening 121S and the bottom opening 123S of the headrest portion 120S may be respectively formed between a top edge and a bottom edge of an inner side the headrest portion 120S and the back covering layers 124S, 125S, and the size of the bottom opening 123S is greater than the size of the top opening 12 IS. However, the headrest portion of the present application is not limited to the above structure. The first back covering layer and the second back covering layer may also be integrated with each other through structures such as zippers, or the back of the headrest portion 120S only includes an integral outer covering which may be opened and fixed along a back edge of the headrest portion, and an opening 121 S and an opening 123S may be specifically formed at the top and bottom of the headrest portion. [00174] FIG. 36 shows a front view of the neck portion of the seat cushion body 11 IS according to a sixth embodiment of the present application, which differs from the preceding embodiments in that the connecting component of the positioning structure is provided on the neck portion of the seat cushion body 111 S rather than on the headrest portion 120S. Correspondingly, the sliding adjustment strap of the positioning structure according to this embodiment is provided inside the headrest portion 120S (not shown). In addition, the neck portion of the seat cushion body 11 IS of this embodiment may also be provided with a neck reinforcing plate (as shown in the dashed line area in the figure) to improve the convenience of adjusting the position of the headrest portion.

[00175] FIG. 37 shows a schematic front view of the headrest portion 120S according to a seventh embodiment of the present application, and FIG. 38 shows a schematic front view of the headrest portion 120S according to an eighth embodiment of the present application. FIG. 39 is a schematic front view of the seat cushion body 110S according to the seventh and eighth embodiments, and FIG. 40 is a schematic rear view of the seat cushion body 110S of FIG. 39.

[00176] Referring to FIG. 37 and FIG. 38, the seventh and eighth embodiments of the present application differ from the aforementioned first to sixth embodiments in that the lower portion of the headrest 120S has a downwardly protruding neck portion of the headrest portion 129S. Moreover, the neck portion of the headrest portion 129S according to the seventh embodiment is provided with the sliding adjustment strap 130S, and the neck portion of the headrest portion 129S according to the eighth embodiment is provided with the connecting component 1408. Correspondingly, referring to FIG. 39 and FIG. 40 together, the upper portion of the seat cushion body 110S according to the seventh and eighth embodiments does not have a neck portion, but rather has a concave portion adapted to accommodate the headrest neck 129S therein, where the concave portion is externally connected to the exterior through a seat cushion body opening 119S formed in the top of the seat cushion body 110S, and the neck portion of the headrest portion 129S passes through the seat cushion body opening 119S and fits into the concave portion in the upper portion of the seat cushion body 110S. Further, the connecting component 1408 is provided within the concave portion of the upper portion of the seat cushion body 110S according to the seventh embodiment of the present application to connect with the sliding adjustment strap 130S on the neck portion of the headrest portion 129S which is fitted within the concave portion. And the sliding adjustment strap 130S is provided within the concave portion of the upper portion of the seat cushion body 1 IOS according to the eighth embodiment of the present application to connect with the connecting component 1408 on the neck portion of the headrest portion 129S which is fitted within the concave portion. Similarly, in the seventh and eighth embodiments, the sliding adjustment strap 130S and the connecting component 1408 together form a positioning structure, and during use of the seat cushion 100S, at least a portion of the positioning structure will be accommodated within the concave portion of the upper portion of the seat cushion body 110S

[00177] In addition, it can also be seen from FIG. 39 and FIG. 40 that the upper portion of the seat cushion body 110S according to the seventh and eighth embodiments of the present application is not provided with shoulder strap through holes 114S. In this case, when the seat cushion is to be applied to a corresponding infant carrier, the shoulder strap of the carrier may pass directly between the seat cushion body 110S and the headrest portion 120S and pass over both sides of the neck portion of the headrest portion 129S so as to connect the seat cushion to the carrier body. Of course, the present application is not limited thereto, and a pair of shoulder strap through holes 114S may also be provided in the upper portion of the seat cushion body 110S in the aforementioned seventh and eighth embodiments, as in the other embodiments, for threading the shoulder strap of the carrier.

[00178] In other embodiments according to the present application, the shoulder strap through holes 114S provided on the upper portion of the seat cushion body 110S may also be omitted, and the shoulder strap of the carrier may pass directly between the seat cushion body 110S and the headrest portion 120S to connect the seat cushion with the carrier body. In any case, however, it is optional to provide shoulder strap through holes 114S in the upper portion of the seat cushion body 110S through which the shoulder strap of the carrier passes.

[00179] In addition, in FIG. 37 and FIG. 38, a reinforcing plate may also be provided on the back or inside of the neck portion of the headrest portion 129S to increase the stiffness of the neck portion of the headrest portion 129S to facilitate the moving adjustment of the headrest portion relative to the seat cushion body.

[00180] Referring back to FIG. 35, the position adjustment and positioning of the headrest portion 120S of the seat cushion 100S according to the foregoing embodiments of the present application is realized in the following manner: after the positioning structure between the seat cushion body 110S and the headrest portion 120S has been assembled, the sliding adjustment strap 130S is sequentially extended through the two engagement holes 146S of the positioning portion 144S, so that when an external force (e.g., a lifting force ) is applied to the headrest portion 120S, the sliding adjustment strap 130S may slide up and down through the engagement holes 146S of the positioning portion 144S, and when the external force is removed, the sliding adjustment strap 130S can be maintained in any relative position by means of friction or adhesion between sliding adjustment strap 130S and the positioning portion 144S, and by means of a limiting structure such as a convex line on the sliding adjustment strap.

[00181] According to the aforementioned embodiments, the seat cushion of the present application not only has a simple structure, but also can easily realize the continuous and reliable adjustment and positioning of the headrest portion on the seat cushion body.

[00182] In another aspect, the present application provides an infant carrier, including a carrier body and a seat cushion 100S according to any of the foregoing embodiments of the present application. FIG. 41 schematically shows an infant carrier according to the present application, where the carrier body is a child safety seat 10S and includes, for example, the seat cushion 100S according to the first embodiment of the present application, with the headrest portion at the first position (or the lowest position). FIG. 42 schematically shows a state in which the headrest portion of the seat cushion 100S is raised to the second position (or the highest position) of the infant carrier in FIG. 41.

[00183] Referring to FIG. 41 and FIG. 42, in the infant carrier IS, the seat cushion 100S according to the first embodiment is connected to the child safety seat 10S, where the child safety seat 10S includes a seat portion 1 IS at a lower side and a backrest portion 12S integrally formed with the seat portion. A pair of shoulder straps 14S and a crotch straps 16S are secured to the backrest portion 12S and the seat portion 1 IS , respectively, of the child safety seat 10S which are used for passing through the seat cushion body 110S to connect the seat cushion body 110S to the child safety seat 10S and providing safety by restraining the shoulders and crotch of the child seated on the seat cushion 100S during actual use. Specifically, one end portion of each shoulder strap 14S may be secured to the backrest portion 12S, and the other end portion of each shoulder strap 14S may be extended through a corresponding shoulder strap through hole 114S in the upper portion of the seat cushion body 110S (see FIG. 42) thereby engaging, in a detachable manner, with an engagement buckle 18S provided on one end portion of the crotch strap 16S. The other end portion of the crotch strap 16S extends through a crotch strap through hole 116S in a lower middle portion of the seat cushion body 110S and is secured to the seat portion 1 IS. The shoulder strap 14S and the crotch strap 16S can be reliably connected and easily separated by the engagement buckle 18S. Of course, the connection method of the shoulder strap 14S of the infant carrier IS is not limited to the above structure. One end of the shoulder strap 14S may not be secured to the backrest portion 12S, but may be set to be adjustable in length. The other end of the shoulder strap 14S may be secured to the seat portion 1 IS, and a buckle is provided in the lower middle portion of the shoulder strap 14S to be fastened to the engagement buckle 18S on the crotch strap 16S, so as to form a five-point safety belt for better securing and protecting infants and children using the infant carrier IS.

[00184] The seat cushion 100S can be connected to the child safety seat 10S by extending the shoulder strap 14S and the crotch strap 16S through the shoulder strap through holes 114S and the crotch strap through hole 116S in the seat cushion body 110S, respectively. During the use, the headrest portion 120S of the seat cushion 100S may be placed against the surface of the backrest portion 12S of the child safety seat 10S for upward and downward position adjustment according to actual needs. When it is necessary to remove the seat cushion 100S from the child safety seat 10S, the shoulder strap 14S may be disengaged from the engagement buckle 18S, and the shoulder strap 14S and the crotch strap 16S may be withdrawn through the corresponding through holes 114S, 116S of the seat cushion body to separate the seat cushion 100S as a whole from the child safety seat, to make it easier to remove and wash or replace the seat cushion. During this process, the seat cushion body 110S and the headrest portion 120S of the seat cushion 100S according to the present application are always integrally connected.

[00185] In addition, in the infant carrier IS according to the present application, in addition to the child safety seat 10S, the carrier body may also be a stroller, a baby cradle, a baby carrier or a crib, etc. The seat cushion 100S according to any of the above embodiments of the present application may be applied to all of these carrier bodies.

[00186] Other embodiments of the present application will be readily apparent to those skilled in the art from consideration of the description and practice of the disclosure disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of the present disclosure and include common knowledge or customary technical means in the technical field that are not disclosed in this application. The description and embodiments are to be considered as exemplary only, and the true scope and spirit of the present application is indicated by the claims of the present application.

[00187] Although the present application has been described with reference to enumeration of exemplary embodiments, the terms used are illustrative and exemplary rather than limiting. Since the present application may be embodied in various forms without departing from the spirit and essence of the present application, it should be understood that the above-described embodiments are not limited to any foregoing details, but should be interpreted in the broadest sense within the scope defined by the claims. Therefore, all variations falling within the scope of the claims or their equivalents shall be covered by the claims.

Claims

WHAT IS CLAIMED IS:

1. An infant carrier, comprising: a backrest with a first connecting member; a headrest with a second connecting member, wherein the first connecting member is capable of being slidably positioned relative to the second connecting member to adjust a height of the headrest relative to the backrest, the first connecting member is an adjusting strap, the second connecting member is an adjusting member provided with a plurality of adjusting holes, and the adjusting strap extends through the plurality of the adjusting holes; and wherein the adjusting member is detachably connected to the headrest.

2. The infant carrier according to claim 1, further comprising a shoulder strap, wherein a shoulder strap hole is formed on the headrest, the shoulder strap is connected to the backrest and extends through the shoulder strap hole on the headrest.

3. The infant carrier according to any one of claims 1 or 2, wherein the adjusting member comprises a connecting strap and a connecting sheet, one end of the connecting strap is secured to the headrest, the other end of the connecting strap is provided with the connecting sheet, the adjusting strap is provided with a buckle, one end of the adjusting strap is secured to the backrest, the other end of the adjusting strap is fixedly or detachably connected to the backrest, the buckle is movably provided on the adjusting strap, the connecting strap extends through the buckle, and the connecting sheet fits with the buckle to prevent the headrest from being separated from the backrest.

4. The infant carrier according to any one of claims 1 to 3, wherein the headrest is provided with two adjusting members arranged side by side, and sides of the two adjusting members proximate to each other are secured to the headrest.

5. The infant carrier according to claim 4, wherein the headrest comprises a pocket, and a portion of the adjusting member is inserted into the pocket; and wherein the headrest comprises a securing strap, one end of the securing strap is secured to the headrest, the other end of the securing strap is detachably connected to a first surface of the adjusting member, the one end of the securing strap is located within the pocket, and the portion of the adjusting member is connected to the pocket by a button.

6. The infant carrier according to any one of claims 1 to 5, wherein the headrest is provided with a connecting strap, a channel is formed between the connecting strap and the headrest, the adjusting member is detachably extended into the channel, and the adjusting holes are respectively located on both sides of the connecting strap.

7. The infant carrier according to claim 6, wherein, the headrest is further provided with a steering member, the connecting strap comprises a fixed end secured to the headrest and a free end detachably attached to the headrest, the free end extends through the steering member and is detachably attached to the headrest, so that the channel surrounding the adjusting member and the steering member is formed between the fixed end and the free end of the connecting strap.

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

9. The infant carrier according to any one of claims 7 or 8, wherein the steering member is a flexible rope secured to the headrest at both ends, the connecting strap surrounds a connecting portion of the adjusting member and the steering member, and the number of the connecting straps is less than the number of the adjusting straps.

10. The infant carrier according to any one of claims 1 to 9, wherein the adjusting strap is extended between the adjusting member and the headrest from one of the adjusting holes and out of the adjusting member from another adjusting hole so that the adjusting member exerts a holding force on the adjusting member, and wherein one end of the adjusting strap is secured to the backrest, and the other end of the adjusting strap is detachably connected to the backrest via a connecting member, or each end of each adjusting strap is detachably connected to a connecting ring via the connecting member.

11. The infant carrier according to claim 10, wherein the connecting member comprises a first arm and a second arm, wherein the first arm extends through the connecting ring, the second arm extends through the end of the adjusting strap, and a notch is formed between the first arm and the second arm; wherein the first arm is provided with a first stop rib at an end of the notch for preventing the adjusting strap from being disengaged from the notch, and the second arm is provided with a second stop rib at the end of the notch for preventing the adjusting strap from being disengaged from the notch; or, the first arm is pivotally connected to the second arm, and the notch is capable of being opened and closed through the pivot between the first arm and the second arm.

12. The infant carrier according to any one of claims 1 to 11, wherein the adjusting member comprises a connecting portion and a plurality of positioning portions connected to the connecting portion, the plurality of positioning portions are each provided with at least two adjusting holes, a plurality of the adjusting straps corresponding to the plurality of positioning portions are provided in parallel on the backrest, and each of the plurality of the adjusting straps is extended sequentially through each of the adjusting holes of a corresponding one of the positioning portions; and wherein the connecting portion of the adjusting member is fixedly connected to the headrest, and the positioning portion is capable of being pivoted relative to the connecting portion.

13. The infant carrier according to claim 7, wherein an upper edge of the backrest is formed into a slope so that a gap between the headrest and the backrest for holding the headrest is formed, and the free end of the connecting strap is detachably attached to the upper edge of the headrest.

14. A seat cushion, applied to an infant carrier, wherein the seat cushion comprises: a seat cushion body; a headrest portion; and a positioning structure, comprising a first positioning part provided to the seat cushion body and a second positioning part provided to the headrest portion, wherein the first positioning part and the second positioning part are movably connected to each other to position the headrest portion at a plurality of positions relative to the seat cushion body, wherein the first positioning part of the positioning structure is a sliding adjustment strap, and the second positioning part of the positioning structure is a connecting component; or, the first positioning part of the positioning structure is a connecting component, and the second positioning part of the positioning structure is a sliding adjustment strap, and wherein the sliding adjustment strap and the connecting component are engaged in a manner capable of sliding relative to each other to movably connect the headrest portion to the seat cushion body, and the headrest portion is capable of being positioned at different positions relative to the seat cushion body through the fit between the sliding adjustment strap and the connecting component.

15. The seat cushion according to claim 14, wherein the connecting component comprises a connecting portion and at least one positioning portion connected to the connecting portion, and wherein the positioning portion is movably connected to the sliding adjustment strap, the connecting portion is secured to the seat cushion body or the headrest portion, and the positioning portion is capable of being pivoted relative to the connecting portion.

16. The seat cushion according to any one of claims 14 or 15, wherein one end of the headrest portion is provided with a protruding neck portion of the headrest portion, wherein the second positioning part is located on the neck portion of the headrest portion, and wherein the seat cushion body is provided with a concave portion corresponding to the neck portion of the headrest portion, and when a position of the headrest portion is adjusted, the neck portion of the headrest portion is capable of sliding within the concave portion of the seat cushion body.

17. The seat cushion according to any one of claims 14 to 16, wherein the headrest portion comprises a back covering layer surrounding a neck portion of the seat cushion body so that the headrest portion is sleeved on the neck portion of the seat cushion body.

18. The seat cushion according to claim 16 wherein an end of the neck portion of the seat cushion body is provided with a lifting strap, a first end of the headrest portion is provided with a first opening for extending through the neck portion of the seat cushion body, a second end of the headrest portion is provided with a second opening for extending through the lifting strap, and a size of the first opening is greater than a size of the second opening.

19. The seat cushion according to claim 18, wherein a length of the lifting strap is configured to always allow the lifting strap extending through the second opening when the headrest portion is positioned in any position, and the lifting strap is made of rigid material.

20. The seat cushion according to any one of claims 14 to 19, wherein the connecting component is provided with two or more through holes, and the sliding adjustment strap extends through the through holes, wherein the connecting component comprises a pair of the positioning portions arranged in a horizontal direction and separated by a predetermined distance, and the sliding adjustment strap comprises a pair of sliding adjustment straps arranged in parallel and separated by the predetermined distance, wherein each of the sliding adjustment straps comprises two end portions secured to one of the seat cushion body and the headrest portion and an overhanging section between the two end portions, each of the positioning portions is secured to the other of the seat cushion body and the headrest portion, and the overhanging sections of the pair of sliding adjustment straps are respectively extended through a corresponding one of the pair of positioning portions.

21. The seat cushion according to claim 20, wherein the sliding adjustment strap is a braided strap, the sliding adjustment strap is provided with a plurality of convex line structures extending in a direction perpendicular to a length direction of the sliding adjustment strap, and the connecting component is a plastic sheet.

22. The seat cushion according to any one of claims 16 to 21, wherein the neck portion of the seat cushion body is provided with a hard sheet along a moving direction of the headrest portion.

23. The seat cushion according to claim 22, wherein the hard sheet is provided with a shoulder strap groove through which a shoulder strap is extended, and the seat cushion body is provided with a crotch strap through hole through which a crotch strap is extended.