child seat

Abstract

We offer a child car seat with a foldable backrest. [Solution] The child seat 100 comprises a seat shell 10 including a seat base 1 and a backrest 2, and a hinge 300 located between the seat base and the backrest. The backrest is foldable relative to the seat base.

Description

Technical Field

[0001] (Reference to Related Applications) This application claims priority to U.S. Provisional Application No. 63 / 757,626, filed on February 12, 2025, and U.S. Provisional Application No. 63 / 794,109, filed on April 24, 2025, the entire disclosures of which are incorporated herein by reference.

[0002] The present disclosure relates to a conventional child seat, and more particularly to a booster seat having a foldable backrest.

Background Art

[0003] Child seats are essential for ensuring the safety and comfort of young passengers in vehicles. There are various booster seats with different configurations that help raise a child to the correct height to use the vehicle seat belt, but current designs often lack an optimal integration of comfort, convenience, and compactness, and this tendency is particularly evident in terms of foldability, belt retention, and additional features such as armrests and cup holders. The present disclosure provides a child seat comprising a booster seat that integrates a foldable backrest, a belt guide, an extendable and swiveling armrest, and a deployable cup holder to address these issues.

Summary of the Invention

[0004] According to one embodiment of the present disclosure, a child seat is provided, the child seat comprising a seat shell including a seat base and a backrest, and a hinge located between the seat base and the backrest, the backrest being foldable with respect to the seat base.

[0005] In one embodiment, the hinge may comprise a belt guide for passing a seat belt through the hinge.

[0006] In one embodiment, the belt guide may have a curved surface for guiding the seat belt.

[0007] In one embodiment, the hinge may include a hook portion configured to hold the seat belt in a predetermined position.

[0008] In one embodiment, the hinge may be located on the outer circumference of the seat base.

[0009] In one embodiment, the backrest may further include a lower and an upper part, the depth of the lower part being less than the depth of the upper part, and the backrest is configured to prevent collision with the seat base and to facilitate turning when folded relative to the seat base.

[0010] In one embodiment, the backrest further includes a lower and an upper part, the lower part of which may be located between opposing sides of the seat base.

[0011] In one embodiment, the width of the upper part is greater than the width of the lower part, so that when the child seat is folded, a portion of the side of the backrest is located between the sides of the seat base, and the other portion of the side of the backrest is located outside the seat base.

[0012] In one embodiment, a groove is provided on the side of the backrest, and the groove may be configured to avoid the hinge so as to prevent the side of the backrest from becoming jammed with the hinge.

[0013] In one embodiment, the armrest may further include soft accessories installed on the inner trim.

[0014] In one embodiment, the armrest may be rotatable and automatically extend when the backrest is folded.

[0015] In one embodiment, the height of the armrest can be adjusted in one or more stages according to the child's growth.

[0016] In one embodiment, a cup holder that can be extended from the seat base and has a protruding portion for easy removal may be further provided.

[0017] In one embodiment, the cup holder may further include a soft peripheral portion.

[0018] In one embodiment, the seat base may further be provided with one or more cup holders positioned on opposing sides, each of which may be configured to be pulled out from the seat base and pushed in toward the seat base.

[0019] In one embodiment, the backrest may be provided with a cover located below it and extending from the seat base, the cover being configured to conceal ribs and structural details.

[0020] In one embodiment, the backrest may be covered with soft material.

[0021] In another aspect of the present disclosure, a child seat is provided, the child seat comprising a seat shell including a seat base and a backrest, a hinge located between the seat base and the backrest, the backrest being foldable relative to the seat base, and armrests attached to the backrest, the armrests located on opposing sides of the backrest. Each of the armrests is configured to be adjustable along the backrest between a stowed position and an extended position.

[0022] According to another aspect of the present disclosure, a child seat is provided, the child seat including a seat base, a seat shell including a backrest foldable with respect to the seat base, a hinge positioned between the seat base and the backrest, and an armrest attached to the backrest, the armrest including an extendable portion. The extendable portion is movable between a retracted position and an extended position.

[0023] In one embodiment, the extendable portion of the armrest may be in the extended position and is configured to be rotatable between an upward rotation position and a downward rotation position with respect to the armrest body of the armrest.

Brief Description of the Drawings

[0024] The objects, features, and advantages of the present disclosure will be more readily understood by referring to the following disclosure in conjunction with the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same components in each drawing, and reference numerals having alphabetical characters and / or numerical subscripts are used to indicate a part or subpart of a component, or an additional type, embodiment, or variation of a selected component, as further indicated by the context of the text, in each drawing. [Figure 1] It is a side (elevation) view of an exemplary or representative first embodiment of a child seat. [Figure 2] It is an isometric projection view of an exemplary or representative first embodiment of a child seat, including a partially enlarged view of a representative first embodiment of a hinge. [Figure 2A] It is a schematic view showing a part of a hinge according to another embodiment of the present disclosure. [Figure 2B] It is a schematic view showing a part of a hinge according to another embodiment of the present disclosure. [Figure 3A] It is a partial side view of an exemplary or representative first embodiment of a child seat provided with a belt passing through a hinge region. [Figure 3B]It is a partial isometric projection view of an exemplary or representative first embodiment of a child seat. [Figure 3C] It is a partial isometric projection view of an exemplary or representative first embodiment of a child seat. [Figure 4A] It is a partial isometric projection view of an exemplary or representative first embodiment of a child seat and a representative first embodiment of a hinge. [Figure 4B] It is a partial isometric projection view of an exemplary or representative first embodiment of a child seat and a representative first embodiment of a hinge. [Figure 4C] It is a partial isometric projection view of an exemplary or representative first embodiment of a child seat and a representative first embodiment of a hinge (FIGS. 4A to 4C are collectively referred to as "FIG. 4" in this specification). [Figure 5A] It is an isometric projection view of an exemplary or representative first embodiment of a child seat and a representative first embodiment of a backrest cover in a folded position. [Figure 5B] It is a rear (elevation) view of an exemplary or representative first embodiment of a child seat and a representative first embodiment of a backrest cover. [Figure 6A] It is a partial isometric projection view of an exemplary or representative first embodiment of a child seat and a cup holder. [Figure 6B] It is a partial isometric projection view of an exemplary or representative first embodiment of a child seat and the cup holder shown in FIG. 6A. [Figure 7] It is an isometric projection view of an exemplary or representative first embodiment of a child seat and a representative second embodiment of a hinge. [Figure 8] It is a side (elevation) view of an exemplary or representative first embodiment of a child seat and a representative second embodiment of a hinge. [Figure 9A] It is a side (elevation) view of an exemplary or representative first embodiment of a child seat in a folded position and a representative second embodiment of a hinge. [Figure 9B]This is a side (elevation) view of an exemplary or representative first embodiment of a child seat in the open position and a representative second embodiment of a hinge. [Figure 9C] This is a partial rear view of an exemplary or representative first embodiment of a child seat in the open position and a representative second embodiment of a hinge. [Figure 10] This is a partial isometric projection of an exemplary or representative second embodiment of a child seat equipped with an armrest according to the first embodiment, and further shows a representative third embodiment of the armrest and a hinge in a disassembled state. [Figure 11] This is an illustrative example of a child seat equipped with an armrest according to a typical first embodiment, or an isometric projection of a typical second embodiment, where a typical fourth embodiment of the armrest and hinge in an extended state is further shown. [Figure 11A] This is a schematic diagram of a portion of the armrest area of ​​a child seat according to another embodiment of the present disclosure, illustrating the cushioning effect of the armrest pad. [Figure 12A] This is an example of a child seat equipped with a cup holder according to a typical first embodiment, or a partial isometric projection of a typical first embodiment, showing the stored state. [Figure 12B] This is an example of a child seat equipped with a cup holder according to a typical first embodiment, or an isometric projection view of a typical first embodiment, showing the stored state. [Figure 13] This is an illustrative or representative partial side (elevation) view of a child seat equipped with a cup holder with a cup according to a typical first embodiment, showing the unfolded state. [Figure 14] This is an example of a child seat equipped with a cup holder with a cup according to a typical first embodiment, or a partial isometric projection of a typical first embodiment, showing the unfolded state. [Figure 15]This is an example of a child seat equipped with a cup holder with a cup according to a typical first embodiment, or a partial isometric projection of a typical first embodiment, showing the unfolded state. [Figure 16] This is an example of a child seat including a magnified portion of a cup holder with a cup according to a typical first embodiment, or a partial isometric projection view of a typical first embodiment. [Figure 17A] This is an example of a child seat equipped with a cup holder according to a typical first embodiment, or a partial front view of a typical first embodiment, showing the unfolded state. [Figure 17B] Figure 17A is an enlarged isometric projection view of an exemplary or representative first embodiment of the cup holder shown, illustrating the cup holder in its stored position. [Figure 18] This is an isometric projection view of an exemplary or representative first embodiment of a cup holder. [Figure 19] This is a cross-sectional view of an exemplary or representative first embodiment of the cup holder (along the A-A' plane in Figure 18). [Figure 20] This is a cross-sectional view of an exemplary or representative first embodiment of the cup holder (along the B-B' plane in Figure 18). [Figure 21] These are partial isometric projection views of an exemplary or representative first embodiment of a child car seat and a representative second embodiment of a backrest cover. [Figure 22] These are partial isometric projection views of an exemplary or representative first embodiment of a child car seat and a representative third embodiment of a backrest cover. [Figure 23] These are isometric projection views of an exemplary or representative first embodiment of a child car seat and a representative fourth embodiment of a backrest cover. [Figure 24] This is an illustrative side (elevation) view of a child seat equipped with an armrest according to a typical second embodiment, or a typical third embodiment, showing the stored state. [Figure 25]This is an illustrative side (elevation) view of a child seat equipped with an armrest according to a typical second embodiment, or a typical third embodiment, showing a partially unfolded state. [Figure 26] This is an illustrative side (elevation) view of a child seat equipped with an armrest according to a typical second embodiment, or a typical third embodiment, showing the fully unfolded state. [Figure 27] This is an illustrative side (elevation) view of a child seat equipped with an armrest according to a typical second embodiment, or a typical side (elevation) view of a third embodiment, showing the child seat in its folded state. [Figure 28] This is an illustrative or representative side (elevation) view of a foldable child seat with armrests in a retracted (or upright) position, representing a typical third embodiment. [Figure 29] This is an exemplary or representative side (elevation) view of a foldable child seat with an armrest in an extended (or horizontal) position, representing a typical third embodiment. [Figure 30] This is an exemplary or representative side (elevation) view of a foldable child seat with an armrest in the extended (or horizontal) position, representing a typical third embodiment, showing the child seat in its folded state. [Figure 31] This is an illustrative side (elevation) view of a typical third embodiment of a foldable child seat equipped with armrests in a retracted (or upright) position, or a typical fourth embodiment, showing the child seat in its folded state. [Figure 32] This is a side (elevation) view of an exemplary or representative fifth embodiment of a child seat equipped with an armrest according to a typical fourth embodiment, showing multiple positions from the deployed (or horizontal) position to the retracted (or upright) position. [Figure 33A]Figure 32 shows an exemplary child seat in a rear-facing mode, including an armrest in a retracted (or upright) position, representing a typical fourth embodiment, or a side (elevation) view of a typical fifth embodiment. [Figure 33B] Figure 32 shows an exemplary child seat in forward-facing mode, including the armrests in the stowed (or upright) position, representing a typical fourth embodiment, or a side (elevation) view of a typical fifth embodiment, also showing an adjustable headrest. [Figure 33C] Figure 32 is an illustrative or representative side (elevation) view of a child seat in forward-facing mode, including an armrest positioned between the stowed (or upright) position and the deployed (or horizontal) position, as shown in a typical fourth embodiment, and also shows the raised backrest and headrest. [Figure 33D] Figure 32 is a side (elevation) view of an exemplary or representative fifth embodiment of the child seat, shown in booster mode without the backrest. [Figure 34A] This is an illustrative or representative side (elevation) view of a foldable child seat, which includes an extendable and rotatable armrest in a retracted position, according to a typical fifth embodiment. [Figure 34B] This is an illustrative or representative side (elevation) view of a foldable child seat of a typical fifth embodiment, which includes an extendable and rotatable armrest in an extended and downward-rotated position. [Figure 35A] Figure 34B is an illustrative or representative front (elevation) view of a foldable child seat, which is a typical fifth embodiment and includes extendable and rotatable armrests in an extended and downward-rotating position, as shown in the figure. [Figure 35B] Figure 34B shows an exemplary or representative front (elevation) view of a foldable child seat, which is a typical fifth embodiment and includes extendable and rotatable armrests in an extended and upward-rotating position, as shown in Figure 34B. [Modes for carrying out the invention]

[0025] While this disclosure can be implemented in many different forms, specific exemplary embodiments are shown in the accompanying drawings and described in detail herein. However, this disclosure should be considered illustrative of the principles of this disclosure and should be understood as not intended to limit to specific embodiments. In this regard, before describing in detail at least one embodiment consistent with this disclosure, it should be understood that the application of this disclosure is not limited to the structural details and configurations described above and below, illustrated in the accompanying drawings, or described in the embodiments. Methods and apparatus consistent with this disclosure may take other embodiments and can be implemented and performed in various ways. Furthermore, the expressions and terminology used herein, as well as the abstract, are for illustrative purposes only and should not be considered limiting.

[0026] This disclosure provides a child seat 100 that includes, or is configured as, a booster seat, the booster seat including a foldable backrest, a belt guide on a hinge, and a deployable cup holder, enabling a more compact and functional design. The seat may or may not include an armrest, and the configuration of these features enhances both the aesthetics and usability of the seat.

[0027] Figure 1 is a side view of an exemplary or representative first embodiment of the child seat 100, and Figure 2 is an isometric projection view of an exemplary or representative first embodiment of the child seat 100, including a partial enlarged view of a representative first embodiment of the hinge 300.

[0028] Referring to Figures 1-2, an exemplary or representative child seat 100 comprises a seat shell 10 having a seat base 1 and a backrest 2, and a hinge mechanism or hinge 300 located between the seat base 1 and the backrest 2. The seat shell 10 is configured to accommodate a child passenger. Here, the seat shell 10 comprises a seat base 1 and a backrest 2 that is foldably connected to the seat base 1 to allow relative movement between the seat shell 1 and the seat base 1. The hinge mechanism is operably connected between the backrest 2 and the seat base 1 to facilitate such folding. The hinge mechanism may comprise or be configured as a hinge 300. The hinge 300 may include a belt guide 320. The belt guide 320 may include a limiting section configured to at least partially limit a seat belt 930 (see Figure 3) within the belt guide 320. The limiting portion may, for example, be configured as a hook portion 330 formed by the belt guide 320, but is not limited thereto. As shown in Figures 1 and 2, the belt guide 320 may comprise a first belt guide 320a positioned on the backrest and a second belt guide 320b positioned on the seat base. The first belt guide 320a forms the hook portion 330. The first belt guide 320a and the second belt guide 320b may be hinged to each other, and at least one of the first belt guide 320a and the second belt guide 320b forms the hook portion 330. In other words, the belt guide 320 may be formed by both the side of the seat base 1 and the side of the backrest 2. In the illustrated embodiment, the first belt guide 320a forms the hook portion 330. As shown in Figures 2A and 2B, in other examples, the belt guide 320 may be positioned on the seat base 1. Alternatively, in another example, the belt guide 320 may be located on the backrest 2.

[0029] Figure 3A is a partial side view of an exemplary or typical first embodiment of the child seat 100, which includes a seat belt 930 (i.e., a vehicle seat belt) passing through the hinge region. Figure 3B is a partial isometric projection of an exemplary or typical first embodiment of the child seat 100. Figure 3C is a partial isometric projection of an exemplary or typical first embodiment of the child seat 100.

[0030] Referring to Figures 3A-3C, an exemplary or representative hinge mechanism (i.e., hinge 300) includes a belt guide 320 configured to allow a seat belt 930 to pass through it. One side of the backrest 2 is hinged to one side of the seat base 1. In the illustrated representative embodiment, the first belt guide 320a may be located on the side of the backrest 2 or may be formed by the side of the backrest 2. The second belt guide 320b may be formed by the side of the seat base 1. The second belt guide 320b protrudes from the upper surface of the seat base 1. The belt guide includes a curved guide surface configured to guide the seat belt along a predetermined path during installation and use. The second belt guide 320b is provided with a receiving groove 102 having a recess on its surface. At least a portion of the first belt guide 320a is housed in the receiving groove 102 and hinged to the second belt guide 320b. The first belt guide 320a is, for example, a C-shaped belt guide. The first belt guide 320a has an inwardly moving surface. The curved guide surface 323 is formed, at least in part, by this inwardly moving surface. In the illustrated embodiment, the inwardly moving surface of the first belt guide 320a and the recessed surface of the second belt guide 320b jointly form the curved guide surface 323. This allows the seat belt 930 to be guided smoothly over the surface. Furthermore, the curved guide surface 323 makes the belt guide 320 appear thinner and less bulky.

[0031] Continuing to refer to Figures 3A-3C, the hinge further comprises a hook portion 330 (the hook portion 330 may function as an embodiment of a restrictor) configured to hold the seat belt in a fixed position within the belt guide. The hinge mechanism (i.e., hinge 300) is positioned in the outer peripheral region of the seat base 1 to facilitate access to and integration with the seat belt system. In this embodiment, the hook portion 330 may be formed by a first belt guide 320a. In other words, the first belt guide 320a includes the hook portion 330. In the vertical direction, at least a portion of the hook portion 330 is located above the curved guide surface 323 of the belt guide 320. When the seat belt 930 passes through the belt guide 320, the hook portion 330 can restrict the seat belt 930 at least partially. In the illustrated embodiment, both the hook portion 330 and the first belt guide 320a are located outside the second belt guide 320b. In other words, at least a portion of the side of the seat base 1 is located outside the seat base 1.

[0032] Figures 4A, 4B, and 4C are partial isometric projections of exemplary or representative first embodiments of the child seat 100 and representative first embodiments of the hinges 300A, 300B, and 300C.

[0033] As described above, in addition to the design and structure of hinge 300, many more designs and structures are possible and are included within the scope of this disclosure. Figures 4A to 4C show a number of, but not all, hinge mechanisms (i.e., hinges 300A, 300B, 300C) and selectable display modes for child seat 100. The following are examples, but are not limited to: Hinge 300A has exposed flat rivets. Hinge 300B has a color sticker 340 configured to conceal the rivets on its surface (this may function as a cover member and / or belt guide mark 322, but the cover member and / or belt guide mark 322 is not limited to the color sticker 340). The hinge 300C has a mounting interface (including, for example, a protruding post (not shown) and a hole 203 located in the cover 350) in the rivet area (also called the hinge area), thereby ensuring secure mounting after the riveting of the backrest 2 and the assembly of the plastic cover (the plastic cover may function as one embodiment of the cover 350, but is not limited to the cover 350).

[0034] Referring to Figure 4A, in one example, the hinge 300A may include a pivot shaft 310 that pivotably connects the first belt guide 320a to the second belt guide 320b. The pivot shaft 310 passes through the first belt guide 320a and is inserted into the second belt guide 320b. The pivot shaft 310 may be configured, for example, as a flat rivet and may be exposed from the surface of the hinge 300A (specifically, the surface of the first belt guide 320a). The hinge 300A may further be fitted with belt guide marks (not shown in this example) that can be printed on the outer surface of the first belt guide 320a or affixed to the outer surface of the first belt guide 320a as stickers.

[0035] Referring to Figure 4B, in other examples, like hinge 300A, hinge 300B may include a pivot shaft (not shown) that pivotably connects the first belt guide 320a to the second belt guide 320b. The pivot shaft 310 may be provided, for example, as a rivet. Hinge 300B in this example differs from hinge 300A in that hinge 300B further includes a cover member. The cover member may be provided, for example, as a color sticker 340 attached to the pivot shaft (e.g., a rivet). The color sticker 340 is attached to the outer surface of the first belt guide 320a. For example, the color sticker may be configured in green, but is not limited to this. It should be understood that the cover member is not limited to the color sticker 340. In other examples, the cover member may be made of plastic, metal, etc., and may be attached to the first belt guide 320a (e.g., by snap-fit, adhesive, embedding, etc.). The cover member in this example can provide a more concise appearance for the hinge 300B. The hinge 300B may be further fitted with a belt guide mark 322, which may be installed as a color sticker 340, but is not limited to this. For example, in other embodiments, the belt guide mark 322 may be printed on the outer surface of the first belt guide 320a or manufactured from plastic, metal, etc., and attached to the first belt guide 320a (e.g., by snap-fit, adhesive, embedding, etc.). In the illustrated example, the color sticker 340 can function as both a cover member and a belt guide mark 322. That is, the cover member and the belt guide mark 322 may be formed from the same component. Selectively, in other examples, the cover member and the belt guide mark 322 may be formed from different components.

[0036] Referring to Figure 4C, in another example, the hinge 300C includes a pivot shaft 310 that pivotably connects a second belt guide 320b to the side of the backrest 2. The pivot shaft 310 is configured, for example, as a rivet. The hinge 300C further includes a cover member that is attached to the hinge area 202 of the backrest 2 to conceal the pivot shaft 310. The cover member may be configured as a cover 350 (e.g., a plastic cover). The cover 350 is fixed to the outside of the hinge area 202 (e.g., by inserting a protruding post on it into a hole 203) and can rotate with the hinge area 202. The cover 350 forms the first belt guide 320a. After the backrest 2 is hinged to the seat base 1 by the pivot shaft 310, the cover 350 can be assembled. Such an arrangement conceals the pivot shaft 310 (e.g., a rivet). The hinge 300C in this example appears to have the simplest appearance compared to the hinges 300A and 300B shown in Figures 4A and 4B. In this example, the shape of the cover 350 corresponds to the shape of the hinge region 202. The cover 350 may be provided with belt guide marks (not shown in this example). The structural arrangement of the belt guide marks can be configured by referring to the above description of the belt guide marks 322 in the example shown in Figures 4A and 4B, but this description will not be repeated here. In other examples, the protruding posts of the cover 350 can function as pivot shafts 310. By inserting the protruding posts into the holes 203 and the holes in the second belt guide 320b (not shown), a hinge connection can be achieved between the hinge region 202 of the backrest 2 and the second belt guide 320b, and the cover 350 (i.e., the first belt guide 320a) can be fixed to the side of the backrest 2.

[0037] Figure 5A is an isometric projection view of an exemplary or representative first embodiment of the child seat 100 and a representative first embodiment of the backrest cover 21 in its folded position. Figure 5B is a rear (elevation) view of an exemplary or representative first embodiment of the child seat 100 and a representative first embodiment of the backrest cover 21.

[0038] Referring to Figures 5A-5B, the exemplary or representative backrest 2 of the child seat 100 is equipped with a cover (also called a backrest cover 21) on its bottom side. This backrest cover 21 is designed to conceal structural ribs and other technical components, protecting the lower members while ensuring a smooth and aesthetically pleasing appearance. For example, the cover may be manufactured from materials such as, but is not limited to, plastic, wood, high-strength aramid fiber material, composite material, metal, or any other suitable material that provides the required strength, durability, and functionality. Referring to Figures 5A and 5B, the sides of the backrest 2 are located outside the seat base 1. After the child seat 100 is folded, the seat base 1 is substantially housed within the backrest 2 (i.e., the seat base 1 is substantially located between the sides of the backrest 2).

[0039] Figure 6A is an illustrative or representative first embodiment of the child seat 100 and a partial isometric projection of the cup holder 5. Figure 6B is an illustrative or representative first embodiment of the child seat 100 and a partial isometric projection of the cup holder 5 in Figure 6A.

[0040] Referring to Figures 6A-6B, an exemplary or representative seat base 1 includes a cup holder 5 that is deployable and retractable relative to the seat base 1. As shown in the drawings, when the cup holder 5 is retracted relative to the seat base 1, it is housed in a retractable groove 101 on the left and / or right side of the seat base 1. Each of the opposing sides of the seat base 1 (e.g., the second belt guide 320b) is provided with a receiving groove 102 that is recessed inward relative to the outer circumference of the seat base 1. The side of the backrest 2 (e.g., the first belt guide 320a) is partially housed in the receiving groove 102 and is pivotable relative to the side of the seat base 1. In the left-right direction, the outer circumference of the first belt guide 320a does not extend beyond (protrude) the outer circumference of the seat base 1.

[0041] Figure 7 is an isometric projection view of an exemplary or representative first embodiment of the child seat 100 and a representative second embodiment of the hinge 300. Figure 8 is a side (elevation) view of an exemplary or representative first embodiment of the child seat 100 and a representative second embodiment of the hinge 300. Figure 9A is a side (elevation) view of an exemplary or representative first embodiment of the child seat 100 and a representative second embodiment of the hinge 300 in the folded position. Figure 9B is a side (elevation) view of an exemplary or representative first embodiment of the child seat 100 and a representative second embodiment of the hinge 300 in the unfolded position. Figure 9C is a partial rear view of an exemplary or representative first embodiment of the child seat 100 and a representative second embodiment of the hinge 300 in the unfolded position.

[0042] Referring to Figures 7-9C, an exemplary or representative backrest 2 is foldable relative to the seat base 1. In other words, in the illustrated embodiment, the child seat 100 is foldable. For example, the child seat 100 may be configured without armrests, but is not limited thereto. In this case, the armrests are omitted and replaced by belt hooks (also called hooks 330). In the illustrated embodiment, the seat base 1 has sides that are positioned opposite each other. The sides of the seat base 1 are hinged to the sides of the backrest 2 via pivot shafts 310. The backrest 2 can rotate around the pivot shafts 310 to fold relative to the seat base 1. The sides of the seat base 1 may each form a limiting portion. For example, the limiting portion may be configured as a hook 330, but is not limited thereto. The pivot shafts 310 are mounted on the seat base 1 and are adjacent to the hooks 330. Selectively, belt guides 320, which may be formed by the sides of the seat base 1, may be installed on opposing sides of the seat base 1. Each belt guide 320 includes a hook portion 330 and has a curved guide surface 323. In the vertical direction, the hook portion 330 is substantially positioned above the curved guide surface 323 to hold the seat belt 930 (see Figure 3A) in a fixed position within the belt guide 320. In the child seat 100 shown in Figure 9C, the pivot shaft 310 is partially pulled out from the side of the seat base 1 in the direction indicated by the arrow.

[0043] In the typical embodiment shown in the drawings, the backrest 2 further includes a lower part 2b and an upper part 2a, with the lower part 2b being less deep than the upper part 2a. That is, the depth of the lower part 2b of the backrest 2 is less than the depth of the upper part 2a of the backrest 2. Specifically, each side of the backrest 2 includes a lower part located at the lower part 2b of the backrest 2 and an upper part located at the upper part 2a of the backrest 2, with the width of the lower part in the front-rear direction decreasing compared to the width of the upper part in the front-rear direction. The upper and lower parts transition continuously. Referring to Figure 7, the lower parts of the backrest 2 are each pivotably connected to the sides of the seat base 1 via pivot shafts. The structural configuration of the backrest 2, seat base 1, and hinge 300 in the child seat 100 shown in Figure 8 is substantially the same as that of the child seat 100 shown in Figure 7, with only slight differences in their specific shapes. Referring to Figure 8, the dashed line X1 schematically shows the initial visual position of the backrest 2 when the depth of the lower part 2b of the backrest 2 is not reduced. If the sides of the backrest 2 were designed based on the standard shown by the dashed line X1, the sides of the backrest 2 may collide with the seat base 1 when the backrest 2 pivots and folds relative to the seat base 1. Compared to the dashed line X1, in the illustrated embodiment, the lower edge of the backrest 2 is significantly offset backward, i.e., the lower part 2b of the backrest 2 has a reduced depth. As a result, the reduced depth of the lower part 2b is configured to minimize interference with the seat base 1 and to facilitate the pivoting of the backrest 2 relative to the seat base 1 when performing the folding operation.

[0044] As shown in Figures 7-9C, the lower part 2b of the backrest 2 is located inside the side of the seat base 1. In this embodiment, by swapping the positions of the side of the seat base 1 and the side of the backrest 2 (compared to the child seat 100 shown in Figures 4A-4C), more space is provided in the seat base 1. This promotes both an integrated appearance and an integrated seat belt retainer (i.e., belt guide 320).

[0045] As shown in Figures 9A to 9C, in one embodiment, the upper part 2a of the backrest 2 is significantly wider than its lower part 2b. In other words, the width of the upper part 2a of the backrest 2 is greater than the width of the lower part 2b of the backrest 2. Specifically, in the illustrated embodiment, the width of the backrest 2 in the left-right direction (i.e., the distance between opposing sides of the backrest 2) gradually increases from the bottom to the top. When the child seat 100 is folded, at least a portion of the seat base 1 is accommodated by the backrest 2 (or sandwiched between the sides of the backrest 2, for example, the upper side). That is, when the child seat 100 is folded, a portion of each side of the backrest 2 is located inside the respective sides of the seat base 1, and the other portions of each side of the backrest 2 pass over the seat base 1 from, for example, the front and / or top of the respective belt guides 320, and at least partially sandwich the seat base 1 between them. A groove 201 for accommodating the hinge 300 is provided on each side of the backrest 2, thereby preventing the side of the backrest 2 from interfering with the belt guide 320 during the folding process of the child seat 100, and thus preventing it from getting caught in the hinge 300. The groove 201 is generally recessed towards the rear. Circle C in Figure 9B shows the approximate area of ​​the groove 201. The position of the groove 201 is relatively high, for example, higher than the pivot shaft 310 of the hinge 300.

[0046] Continuing to refer to Figures 9A-9C, a backrest pad 24 (also called a backrest seat fabric) is installed on the upper part 2a of the backrest 2, and the outer surface of the upper part 2a protrudes outward relative to the outer surface of the lower part 2b. That is, in the left-right direction, the sides of the upper part 2a protrude outward relative to the lower part 2b and toward the belt guide 320. The backrest pad 24 may be manufactured from, for example, soft goods (e.g., fabric, leather). The backrest pad 24 (for example, the boundary line 241 between the backrest pad 24 and the lower part 2b) is located above and / or in front of the hinge 300 (specifically, the hook portion 330 of the hinge 300). For example, referring to Figure 9B, when the backrest 2 of the child seat 100 is extended, the boundary line 241 is located above the belt guide 320 (e.g., the hook portion 330). Referring to Figure 9A, when the backrest 2 is folded, the boundary line 241 is located in front of the belt guide 320 (e.g., the hook portion 330). When the backrest 2 is in a position between the positions shown in Figures 9A and 9B, the boundary line 241 is located in front of and above the belt guide 320 (e.g., the hook portion 330). That is, the backrest pad 24 is located outside a circle centered on the pivot shaft 310 and having a radius equal to the distance between the furthest point of the hook portion 330 and the pivot shaft 310. Therefore, during the downward folding process of the backrest 2 around the pivot shaft 310, interference between the backrest pad 24 and the hinge 300 can be avoided, thereby preventing the backrest pad from getting caught in the hinge 300 or at least preventing partial detachment of the backrest pad.

[0047] Figure 10 is an isometric projection of an exemplary or representative second embodiment of the child seat 100 equipped with an armrest according to the first embodiment, further showing a representative third embodiment of the armrest 4 and the hinge in a disassembled state. Figure 11 is an isometric projection of an exemplary or representative second embodiment of the child seat 100 equipped with an armrest 4 according to a representative first embodiment, further showing a representative fourth embodiment of the armrest 4 and the hinge in an enlarged state.

[0048] Referring to Figures 10-11, an exemplary or representative child seat 100 is configured with an armrest 4, and a hinge 300 is located between the seat base 1 and the backrest 2. The hinge is positioned to partially cover the armrest 4. The armrest 4 is located on the opposing sides of the backrest 2 and can project forward from the sides of the backrest 2. Similar to hinge 300C, in this example, hinge 300 may also include a belt guide 320 and a pivot shaft (not shown in this example). The belt guide 320 includes a first belt guide 320a located on the backrest 2 and a second belt guide 320b located on the seat base 1. The opposing sides of the backrest 2 and the side of the seat base 1 (e.g., the second belt guide 320b) are hinged together by a pivot shaft (e.g., a rivet, not shown in this example). In the illustrated embodiment, each side of the backrest 2 forms a hinge region 202. The first belt guide 320a is formed by a cover 350 fixedly connected to the hinge region 202. This cover 350 covers the hinge region 202 and partially covers the armrest 4. The hinge region 202 of the backrest 2 is hinged to a second belt guide 320b on the outside of the seat base 1. The armrest 4 is located above the hinge region 202. The curved guide surface 323 of the belt guide 320 is located below the armrest 4. A portion of the cover 350 covering the armrest 4 can form a limiting portion (i.e., the second belt guide 320 includes a limiting portion), thereby restricting the seat belt 930 (see Figure 3A) between the armrest 4 and the curved guide surface 323 of the belt guide 320. In this embodiment, the hinge 300 may further include the cover 350. The cover 350 is assembled to the backrest 2 along the direction indicated by the arrows in Figure 10, for example, by snap-fit ​​mounting interfaces 301, 302. The cover 350 may be manufactured from, for example, plastic.

[0049] Referring together to Figures 11 and 11A, the armrest 4 may have additional soft material added to its inner surface to provide a softer, more substantial visual effect and to avoid interference with the seat base 1, thereby allowing the backrest 2 to be folded. The armrest 4 includes an armrest pad 401 which may be made of soft material and is applied to its surface. The soft material applied to the inner surface of the armrest 4 forms a portion of the armrest pad 401. The cover 350 is attached to the outside of the armrest pad 401 and covers at least the outer and lower portions of the armrest 4. A partially schematic diagram in Figure 11A shows the cushioning effect of the armrest pad 401 in an armrest 4 according to another example of the present disclosure.

[0050] In another embodiment, the child seat 100 may be a booster seat. This booster seat includes an armrest 4 with soft material added to the inner trim of the armrest 4. The armrest 4 is swivelable or extendable and can automatically adjust its position when the booster backrest (i.e., the backrest 2 of the child seat 100) is folded down.

[0051] Figure 12A is an example of a child seat 100 equipped with a cup holder 5 according to a typical first embodiment, or a partial isometric projection of a typical first embodiment, showing the stored state. Figure 12B is an example of a child seat 100 equipped with a cup holder 5 according to a typical first embodiment, or a partial isometric projection of a typical first embodiment, showing the stored state. Figure 13 is an example of a child seat 100 equipped with a cup holder 5 with a cup 910 according to a typical first embodiment, or a partial side (elevation) view of a typical first embodiment, showing the unfolded state. Figure 14 is an example of a child seat 100 equipped with a cup holder with a cup 910 according to a typical first embodiment, or a partial isometric projection of a typical first embodiment, showing the unfolded state. Figure 15 is an example of a child seat 100 equipped with a cup holder with a cup 910 according to a typical first embodiment, or a partial isometric projection of a typical first embodiment, showing the unfolded state. Figure 16 is an exemplary or representative isometric projection of a child seat 100, including a partially enlarged portion of a cup holder with a cup 910 according to a typical first embodiment. Figure 17A is an exemplary or representative front view of a child seat 100 equipped with a cup holder 5 according to a typical first embodiment, showing the unfolded state. Figure 17B is an enlarged isometric projection of an exemplary or representative isometric projection of the cup holder 5 shown in Figure 17A, showing the cup holder 5 in the retracted state. Figure 18 is an isometric projection of an exemplary or representative isometric projection of the cup holder 5 according to a typical first embodiment. Figure 19 is a cross-sectional view of an exemplary or representative isometric projection of the cup holder 5 according to a typical first embodiment (along the A-A' plane in Figure 18). Figure 20 is a cross-sectional view of an exemplary or representative isometric projection of the cup holder 5 according to a typical first embodiment (along the B-B' plane in Figure 18).

[0052] Referring to Figures 12A to 20, an exemplary or representative child seat 100 includes a deployable cup holder 5. In some examples, the cup holder 5 has a wider and softer edge, and the radius of the cup holder 5 corresponds to the contour of the seat base. The cup holder 5 includes an overhang 51 configured to facilitate manual deployment by the user. The overhang 51 at the upper edge 52a of the cup holder 5 allows for easy extension. The cup holder 5 fits into the contour of the seat base and has varying thicknesses to facilitate smooth deployment. The design of the backrest 2 includes a plastic cover that enhances the aesthetic appearance of the seat and hides the ribs and structural details. The plastic cover may function as one embodiment of the backrest cover 21 of the backrest 2, but is not limited to the backrest cover 21. The backrest 2 may also be covered with soft goods to provide improved comfort. The cup holder 5 further includes a soft periphery 52 to enhance user comfort. The peripheral portion 52 may include a soft upper edge portion 52a and a soft lower edge portion 52b.

[0053] In certain embodiments, one or more cup holders 5 are positioned on opposing sides of the seat base 1 and are configured to be retractable and retractable relative to the seat base 1, allowing the user to pull them out for use and push them in for storage.

[0054] Referring to Figures 15-17B, a recessed storage groove 53 is formed on the upper surface of the cup holder 5, and this storage groove 53 is configured to hold an item such as a cup 910. The opening of the storage groove 53 has a soft edge. The seat base 1 has a storage groove 101 configured to accommodate the cup holder 5. As shown in Figures 18-20, the cup holder 5 may be configured as a hollow cup holder shell to reduce the overall weight, thereby facilitating the push-pull operation. The thickness of the cup holder 5 varies depending on the location. For example, the thickness of the cup holder 5 is greater at the joint (or transition) between the wall of the storage groove 53 and the rest of the cup holder 5. In the illustrated embodiment, a protruding portion 51 is positioned around the wall of the storage groove 53, and an operating space 501 accessible to the user's fingers is formed between the protruding portion 51 and the wall of the storage groove 53, allowing the cup holder 5 to be pulled out by pulling the protruding portion 51.

[0055] Referring to Figures 15-17A, when the cup holder 5 is pulled out relative to the seat base 1, the cup holder 5 is at least partially pulled out from the seat base 1, and the storage groove 53 is exposed to the outside of the seat base 1 to facilitate the placement of items. Referring to Figures 17A-17B, when the cup holder 5 is retracted relative to the seat base 1, the cup holder 5 is at least partially retracted into the storage groove 101, and the storage groove 53 is not exposed from the seat base 1. As shown by the dashed line in Figure 17B, the contour of the cup holder 5 is aligned with the contour of the seat base 1. As shown in Figure 17A, the protruding portion 51 of the cup holder 5 protrudes at least partially from the storage groove 101 (i.e., from the circumferential surface of the seat base 1) to allow the operation of the protruding portion 51. In this case, as shown by the dashed line X3, the cup holder 5 fits within the contour of the seat base 1. Specifically, the dimensions of the seat base 1 may gradually decrease from top to bottom, and the circumferential surface of the seat base 1 forms an inclined surface. In this way, the cup holder 5 fits within the contour of the seat base 1 (for example, not exceeding the upper contour of the seat base 1), and the protruding portion 51 can at least partially protrude from the circumferential surface of the seat base 1.

[0056] Figure 21 is a partial isometric projection view of an exemplary or representative first embodiment of the child seat 100 and a representative second embodiment of the backrest cover 21. Figure 22 is a partial isometric projection view of an exemplary or representative first embodiment of the child seat 100 and a representative third embodiment of the backrest cover 21. Figure 23 is an isometric projection view of an exemplary or representative first embodiment of the child seat 100 and a representative fourth embodiment of the backrest cover 21.

[0057] Referring to Figures 21-23, an exemplary or representative child seat 100 includes a backrest cover 21 that extends from the seat base 1 and partially overlaps the lower part 2b of the backrest 2. The backrest cover 21 is configured to conceal structural ribs and other internal components or technical features. The backrest cover 21 is configured, for example, as a plastic cover. Depending on the design requirements, the backrest cover 21 may be covered with soft goods.

[0058] Figure 24 is an exemplary side (elevation) view of a child seat 100 equipped with an armrest 4 according to a typical second embodiment or a typical third embodiment, showing the stored state. Figure 25 is an exemplary side (elevation) view of a child seat 100 equipped with an armrest 4 according to a typical second embodiment or a typical third embodiment, showing the partially unfolded state. Figure 26 is an exemplary side (elevation) view of a child seat 100 equipped with an armrest 4 according to a typical second embodiment or a typical third embodiment, showing the fully unfolded state. Figure 27 is an exemplary side (elevation) view of a child seat 100 equipped with an armrest 4 according to a typical second embodiment or a typical third embodiment, showing the folded state of the child seat. Figure 28 is an exemplary side (elevation) view of a foldable child seat 100 equipped with an armrest 4 in the retracted (or upright) position according to a typical third embodiment or a typical fourth embodiment. Figure 29 is an exemplary side (elevation) view of a foldable child seat 100 with an armrest 4 in the deployed (or horizontal) position according to a typical third embodiment, or a typical side (elevation) view of a typical fourth embodiment. Figure 30 is an exemplary side (elevation) view of a foldable child seat 100 with an armrest 4 in the deployed (or horizontal) position according to a typical third embodiment, or a typical side (elevation) view of a typical fourth embodiment, showing the child seat 100 in the folded state. Figure 31 is an exemplary side (elevation) view of a foldable child seat 100 with an armrest 4 in the retracted (or upright) position according to a typical third embodiment, or a typical side (elevation) view of a typical fourth embodiment, showing the child seat 100 in the folded state. Figure 32 is an exemplary side (elevation) view of a child seat 100 with an armrest 4 according to a typical fourth embodiment, or a typical side (elevation) view of a typical fifth embodiment, showing multiple positions from the deployed (or horizontal) position to the retracted (or upright) position. Figure 33A is an illustrative or representative side (elevation) view of the child seat 100 shown in Figure 32, which is in a rear-facing mode and includes the armrest 4 in a retracted (or upright) position, as well as a typical fifth embodiment.Figure 33B is an exemplary side (elevation) view of the child seat 100 shown in Figure 32 in forward-facing mode, or a typical fifth embodiment, including the armrest 4 in the retracted (or upright) position, and also showing the adjustable headrest. Figure 33C is an exemplary side (elevation) view of the child seat 100 shown in Figure 32 in forward-facing mode, or a typical fifth embodiment, including the armrest 4 in a position between the retracted (or upright) position and the extended (or horizontal) position, and also showing the raised backrest and headrest. Figure 33D is an exemplary side (elevation) view of the child seat 100 shown in Figure 32 in backless booster mode, with the backrest removed. Figure 34A is an exemplary side (elevation) view of the foldable child seat 100 in a typical fifth embodiment, or a typical sixth embodiment, with an extendable and rotatable armrest 4 in the retracted position. Figure 34B is an exemplary side (elevation) view of a foldable child seat 100, or a typical sixth embodiment, which includes an extendable and rotatable armrest 4 in an extended and downward-rotated position, representing a typical fifth embodiment. Figure 35A is an exemplary front (elevation) view of a foldable child seat 100, or a typical sixth embodiment, which includes an extendable and rotatable armrest 4 in an extended and downward-rotated position, representing a typical fifth embodiment. Figure 35B is an exemplary front (elevation) view of a foldable child seat 100, or a typical sixth embodiment, which includes an extendable and rotatable armrest 4 in an extended and upward-rotated position, representing a typical fifth embodiment.

[0059] Referring to Figures 24-35B, an exemplary or representative child seat 100 includes at least one armrest 4 attached to the backrest. Each armrest 4 is positioned on an opposing side of the backrest. Each armrest 4 is configured to be adjustable to provide enhanced support. The armrests 4 are movable between a stowed position in which the armrests 4 are compacted or stored and an extended position in which the armrests 4 are extended for use.

[0060] In some embodiments, the armrest 4 includes a fixed portion and a sliding portion configured to move relative to the fixed portion. As shown in Figures 24-27, in one example, the sliding portion 42 of the armrest 4 slides forward and backward relative to the fixed portion 41. In the illustrated embodiment, the length of the fixed portion 41 is configured such that when the backrest 2 is folded relative to the seat base 1, the fixed portion 41 does not come into contact with the mounting surface 920 of the child seat 100 (see Figure 30, e.g., the floor, the seat surface of a vehicle). The sliding portion is further configured to retract or displace inward when it comes into contact with the mounting surface 920 (see Figure 30, e.g., the floor, the seat surface of a vehicle), thereby enabling position adjustment or shock absorption. Specifically, as shown in Figures 24-26, the sliding part 42 can move forward relative to the fixing part 41 (in the direction indicated by arrow AR1) to switch the armrest 4 from the retracted position to the extended position, and the sliding part 42 can also move backward relative to the fixing part 41 (in the opposite direction to the direction indicated by arrow AR1) to switch the armrest 4 from the extended position to the retracted position. Furthermore, as shown in Figures 26-27, when the armrest 4 is in the extended position, during the folding process of the backrest 2 relative to the seat base 1, the sliding part 42 of the armrest 4 comes into contact with the mounting surface 920 of the child seat 100 (see Figure 30), and the mounting surface 920 applies an external force F1 to the sliding part 42, causing the sliding part 42 to slide backward relative to the fixing part 41 along the direction of arrow AR2. Therefore, the armrest 4 can be switched from the extended position to the retracted position, or to an intermediate position between the extended position and the retracted position. In this intermediate position, the sliding portion 42 simply contacts the mounting surface 920, and there may be no interaction of any mutual forces between them. Referring to Figures 25-27, the sliding portion 42 is slidably positioned within the sliding groove 411 of the fixed portion 41, thereby allowing the sliding portion 42 to slide relative to the fixed portion 41 along the sliding groove 411.

[0061] In some examples, the armrest 4 rotates upward during the folding process, allowing the backrest 2 to fold flat. As shown in Figures 28-31, the armrest 4 is pivotably connected to the backrest 2 and can switch between a stowed position (also called the upright position, where the armrest 4 is nearly parallel to the backrest 2) and an extended position (also called the horizontal position, where the armrest 4 is nearly perpendicular to the backrest 2). The armrest 4 provides support when in the extended position and allows the backrest 2 to fold flat against the seat base 1 when in the stowed position. This allows the armrest 4 to be configured to be longer and designed to be positioned higher. Selectively, as shown in Figures 29 and 31, when the armrest 4 is in the retracted position, during the folding process of the backrest 2 relative to the seat base 1, the armrest 4 can come into contact with the mounting surface 920 (see Figure 30, e.g., the floor, the seat surface of the vehicle seat, etc.) and be pushed by the mounting surface 920 to move from the extended position to the retracted position. This differs from the arrangement shown in Figure 30, where the armrest 4 is in the extended position, or a position between the extended and retracted positions, and extends beyond the mounting surface 920 after the backrest 2 has been fully folded relative to the seat base 1. Selectively, the armrest 4 may automatically fold downward and lock or fix in the belt holding position to function as a belt guide. Furthermore, as shown in Figures 28 and 29, the armrest 4 can automatically pivot downward from the retracted position (as indicated by the arrow in Figure 28) to the belt holding position (e.g., the extended position, or a position between the extended and retracted positions).

[0062] In some cases, as shown in Figures 32-33D, the child seat 100 may be configured as a booster seat, which may include a seat base 1 and a backrest 2 detachably connected to the seat base 1. The seat base 1 may include a seat portion 11 and a base portion 12, the seat portion 11 being adjustable to the base portion 12 for adjusting the height of the seat portion 11. The armrest 4 is swivelably connected (or hinged) to the backrest 2 (e.g., the side of the backrest 2) and is swivelable relative to the backrest 2 around a pivot shaft 310. The armrest 4 can be switched between a retracted position (also called the upright position, i.e., a position substantially parallel to the backrest 2) and an extended position (also called the horizontal position, i.e., a position substantially perpendicular to the backrest 2), and can be maintained in at least two positions. As an example, referring to Figure 32, the armrest 4 can be rotated from the extended position in the direction indicated by the arrow to maintain in the order of a first partially extended position between the retracted position and the extended position, a second partially extended position between the first partially extended position and the retracted position, and the retracted position. As shown in Figure 32, when the armrest 4 is in the retracted position, it can be flush with the side of the backrest 2. The height of the armrest 4 (or the angle between the armrest 4 and the backrest 2) can be adjusted to four different levels depending on the child's age and build. It should be understood that the height of the armrest 4 may also be the average height of the entire armrest 4 (for example, the height of the center of the armrest 4). In the illustrated embodiment, the smaller the angle between the armrest 4 and the backrest 2, the greater the height of the armrest 4. Continuing to refer to Figure 32, the child seat 100 further includes an adjustable headrest 3 which is slidably positioned on the backrest 2 for height adjustment. For example, the headrest 3 can be maintained in positions corresponding to three different heights to accommodate children of different ages and body types. The backrest 2 is equipped with an adjustment section 23. The adjustment section 23 is located at the end of the backrest 2 away from the seat base 1 and is slidable up and down relative to the seat base 1 between a first height position and a second height position. The height corresponding to the second height position of the adjustment section 23 is greater than the height corresponding to the first height position of the adjustment section 23.The headrest 3 can slide up and down together with the adjustment unit 23.

[0063] Referring to Figures 32-33D, the child seat 100 can be divided into four distinct stages of use: Stage 1, rear-facing, suitable for children aged approximately 0-2 years; Stage 2, forward-facing, suitable for children aged 2 years and older; Stage 3, forward-facing, suitable for children aged 4 years and older; and Stage 4, a booster seat without a backrest. The armrest 4 automatically resets to its initial position (e.g., the stowed position) when it moves upward before rotating downward to the desired angle. Referring to Figure 33A, in Stage 1, the child seat 100 is used in the rear-facing position. In this case, the armrest 4 may be used in the stowed position, while the headrest 3 is positioned in the first low-height headrest position. Referring to Figure 33B, in Stage 2, the child seat 100 is in the forward-facing position. In this case, the armrest 4 can still be used in the retracted position, while the headrest 3 can be positioned in a low first headrest position, or adjusted to a second headrest position higher than the first headrest position as indicated by the dashed line, and a third headrest position higher than the second headrest position, if necessary. Referring to Figure 33C, in stage 3, the child seat 100 is used in the forward-facing position. In this case, the armrest 4 can be used in the extended position, or adjusted to a first partially extended position, a second partially extended position, or a retracted position as indicated by the dashed line in the figure, while the headrest 3 can be positioned in a second headrest position, or adjusted to a first headrest position or a third headrest position as indicated by the dashed line, if necessary. Along with this, in stage 3, the adjustment part 23 of the backrest 2 is adjusted to a second height position. Referring to Figure 33D, in stage 4, the child seat 100 is used as a booster without the backrest 2 (i.e., only the seat base 1 is retained and used), and the backrest 2 is removed along with the armrest 4 and headrest 3 attached to it. In Figure 33D, the seat portion 11 can be rotated relative to the base portion 12 to adjust the overall height of the seat portion 11, and the footrest 6 of the child safety seat 100 may be removed or left in place.

[0064] In one embodiment, as shown in Figures 34A to 35B, the child seat 100 may be configured as a booster seat. The armrest 4 of the child seat 100 is attached to the backrest 2 and includes an extendable portion 44 and an armrest body 43. The armrest body 43 is attached to the backrest 2 (for example, the side of the backrest 2). The extendable portion 44 is movable between a retracted position in which the extendable portion 44 is at least partially housed within or adjacent to the armrest body 43 of the armrest 4, and an extended position in which the extendable portion 44 protrudes outward from the armrest 4 to provide additional support or function. That is, the extendable portion 44 is movable between the retracted position and the extended position relative to the armrest body 43. In the extended position, the extendable portion 44 is configured to rotate further relative to the armrest 4. This rotation allows the extendable portion 44 to move between an upward rotation position and a downward rotation position, thereby providing ergonomic adjustability or ease of access depending on the usage situation.

[0065] Referring to Figures 34B and 35A, when the extendable portion 44 is in the extended and downward-rotated position (i.e., when the armrest 4 is in the extended and downward-rotated position), both ends of the extendable portion 44 (i.e., the first end 441 and the second end 442) are located on either side of the armrest body 43 in the left-right direction. Specifically, the first end 441 of the extendable portion 44 is aligned with the inside of the side of the backrest 2 (shown by the dashed line X4), or is located between the inside and outside of the side of the backrest 2, extending inward and beyond the outside of the side of the seat base 1 (shown by the dashed line X5). On the other hand, the second end 442 of the extendable portion 44 extends outward and beyond the outside of the side of the backrest 2 and the outside of the side of the seat base 1. Referring to Figure 35B, when the extendable portion 44 is in the extended and upward-rotated position (i.e., when the armrest 4 is in the extended and upward-rotated position), the first end 441 of the extendable portion 44 is aligned with the outside of the seat base 1 (shown by the dashed line X5) or located outside the side of the seat base 1. When it is necessary to fold the child seat 100, the extendable portion 44 is first rotated to the upward-rotated position (see Figure 35B), and then the backrest 2 can be folded downward relative to the seat base 1. This prevents interference between the armrest 4 (e.g., the armrest body 43) and the seat base 1 during the process of folding the backrest 2 downward relative to the seat base 1.

[0066] While this disclosure has described specific embodiments, these embodiments are illustrative and not limiting. This description provides many specific details, such as electronic components, electrical and structural connections, materials, and structural variations, to provide a thorough understanding of the embodiments of this disclosure. However, those skilled in the art should recognize that embodiments of this disclosure may be carried out without one or more specific details, or with other devices, systems, assemblies, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail so as not to obscure the aspects of the embodiments of this disclosure. Those skilled in the art should recognize that additional or equivalent method steps may be used, combined with other steps, or performed in a different order, all of which fall within the scope of the protection claimed by this disclosure. Furthermore, the various drawings are not drawn to scale and should not be considered limiting.

[0067] Throughout this specification, the terms “one embodiment,” “a certain embodiment,” or “a specific embodiment” mean that a particular feature, structure, or characteristic relating to that embodiment is included in at least one embodiment, but not necessarily in all embodiments, and does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic in any particular embodiment may be combined with one or more other embodiments in any suitable way and in any suitable combination, including by using selected features without corresponding use of other features. In addition, many modifications may be made to adapt a particular application, situation, or material to the essential scope and spirit of this disclosure. As taught herein, the embodiments of this disclosure described and illustrated herein are subject to other variations and modifications and should be considered part of the spirit and scope of this disclosure.

[0068] Furthermore, it will be understood that one or more elements shown in the drawings may be realized in a manner of further separation or integration, and in some cases may be removable or rendered inoperable, which may be useful depending on the particular application. Integrated combinations of components also fall within the scope of this disclosure and may be applicable in particular to embodiments where the separation or combination of individual components is not clear or indistinguishable. Furthermore, the term “coupled” as used herein includes various forms such as “coupling” and “couplable” and means and includes direct or indirect structural coupling, connection or attachment, or suitability or ability to such direct or indirect structural coupling, connection or attachment, and includes integrated components and components coupled via or through other components.

[0069] The dimensions and numerical values ​​disclosed herein should not be understood as being strictly limited to the exact numerical values ​​stated. Instead, unless otherwise specified, each such dimension is intended to mean both the numerical value stated and the functionally equivalent range surrounding that value. For example, a dimension disclosed as "40 mm" is intended to mean "approximately 40 mm".

[0070] Any document cited in the detailed description of this disclosure is incorporated herein by reference to the extent relevant. No citation of any document should be considered prior art to this disclosure. In the event of any conflict between any meaning or definition of a term herein and any meaning or definition of the same term in a document incorporated by reference, the meaning or definition given to the term herein shall prevail.

[0071] Furthermore, any arrows in the drawings should be considered illustrative and not restrictive unless otherwise specified. Steps or combinations of components should also be considered within the scope of this disclosure, especially if their separation or combination is unclear or predictable. As used herein and in the following claims, the term “or” usually means “and / or” and has both connecting and selective meanings (and is not limited to the meaning of “exclusive or”). Throughout this specification and the following claims, “one” and “the foregoing” should be understood to include multiple references, not limited to a single item or element, unless explicitly limited in context and explicitly excluded. Similarly, throughout this specification and the following claims, the meaning of “in” includes “in” and “above,” unless explicitly limited in context. For example, the wording of a particular claim may include the word “between,” but the interpretation of this word should not be limited to exclude the scope of elements beyond the scope of the examples, unless a specific disclaimer is made or the term is limited during the examination process. Therefore, the embodiments of this disclosure should not be construed as limiting unless otherwise indicated.

[0072] The above description of the embodiments shown in this disclosure (including the contents described in the abstract or abstract) is not intended to be exhaustive or to limit this disclosure to the exact forms disclosed herein. As stated above, it should be understood that many variations, modifications, and substitutions are intended and can be implemented without departing from the spirit and scope of the novel concept of this disclosure. It should be understood that no limitation is intended and should not be presumed to be with respect to the specific methods and apparatus shown herein. Of course, the claims are intended to cover all such modifications that fall within the claims. Thus, although several embodiments of this disclosure have been described, this disclosure is limited only to the following claims and their equivalents.

Claims

1. The seat shell, including the seat base and backrest, A hinge located between the seat base and the backrest, A child car seat equipped with, The aforementioned backrest is foldable relative to the seat base. child seat.

2. The hinge is equipped with a belt guide for passing a seat belt through the hinge. The child car seat according to claim 1.

3. The belt guide has a curved surface for guiding the seat belt. The child car seat according to claim 2.

4. The hinge includes a hook portion configured to hold the seat belt in a predetermined position. The child car seat according to claim 2.

5. The hinge is located on the outer circumference of the seat base, A child car seat according to any one of claims 1 to 4.

6. The aforementioned backrest further includes a lower and an upper part, The depth of the lower part is less than the depth of the upper part. The backrest is configured to prevent collision with the seat base and to facilitate turning when folded relative to the seat base. A child car seat according to any one of claims 1 to 4.

7. The backrest further includes a lower and an upper part, the lower part being located between the opposing sides of the seat base. A child car seat according to any one of claims 1 to 4.

8. The upper width is greater than the lower width, so that when the child seat is folded, a portion of the side of the backrest is located between the sides of the seat base, and the other portion of the side of the backrest is located outside the seat base. The child car seat according to claim 7.

9. A groove is provided on the side of the backrest, and the groove is configured to avoid the hinge so as to prevent the side of the backrest from becoming jammed with the hinge. The child car seat according to claim 8.

10. It also features armrests, including soft accessories that are installed on the interior trim. A child car seat according to any one of claims 1 to 4.

11. The armrest is rotatable and automatically extends when the backrest is folded down. The child car seat according to claim 10.

12. The armrest can be adjusted in height in one or more stages according to the child's growth. The child car seat according to claim 10.

13. The seat base is further equipped with a cup holder that can be extended from the seat base and has a protruding portion for easy removal. A child car seat according to any one of claims 1 to 4.

14. The cup holder further comprises a soft periphery. The child car seat according to claim 13.

15. The seat base further comprises one or more cup holders positioned on opposing sides, Each of the cup holders is configured to be pulled out from the seat base and pushed in toward the seat base. A child car seat according to any one of claims 1 to 4.

16. The aforementioned backrest is located at its lower part and includes a cover extending from the seat base. The cover is configured to conceal the ribs and structural details. A child car seat according to any one of claims 1 to 4.

17. The aforementioned backrest is covered with soft material. The child car seat according to claim 16.

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