Seat assembly, folding mechanism, storage device and child seat

Abstract

The present disclosure provides a seat assembly detachably connected to a child car seat back. The seat assembly includes a base, a seat body, and a movable element. The seat body is slidably connected to the base, and the seat body can be positioned at different positions relative to the base. The movable element is located between the backrest and the seat body, and when the backrest is detached from the seat body, the movable element disengages from the backrest and locks with the base, thereby locking the seat body from moving relative to the base. The present disclosure also provides a folding mechanism and a storage device. The present disclosure also provides a child car seat including the seat assembly and / or the folding mechanism and / or the storage device.

Description

[Technical Field]

[0001] The present disclosure relates to child car seats, and more particularly to seat assemblies, folding mechanisms, and storage devices for child car seats. [Background technology]

[0002] As child safety becomes a growing concern, child seats have become essential riding equipment for children.

[0003] A child car seat configured to be attached to a vehicle can improve the safety of children while riding in the vehicle. To accommodate children of various ages, a child car seat typically provides two usage modes: a usage mode with a backrest and a usage mode without a backrest. In the usage mode with a backrest, the angle of the backrest can be adjusted to suit younger children. In the usage mode without a backrest, i.e., after the backrest is removed from the seat portion of the child car seat, the child car seat can be used for older children. In the usage mode without a backrest, the seat portion must be positioned in a specific position on the base. For example, the seat surface of the seat portion is configured to be substantially parallel to the direction of travel of the vehicle, ensuring a comfortable seating experience for the child. However, when the backrest of an existing child car seat is removed, the seat portion is randomly adjusted relative to the base, which may result in a different inclination angle of the seat surface. Therefore, it is difficult to ensure a comfortable seating experience for the child in the usage mode without a backrest.

[0004] Typically, child car seats are secured to the rear seats of a vehicle, occupying a large amount of space there. Most child car seats currently on the market are large and non-foldable. Installing a child car seat in the rear seat of a vehicle often leaves little or no space in the rear seat, limiting the space available for other passengers and luggage, making travel inconvenient. Furthermore, when a child car seat is temporarily not in use, the entire car seat must be removed from the rear seat of the vehicle to free up space for passengers and luggage. When the child car seat is used again, the entire car seat must be returned to the rear seat and secured. This is not only cumbersome and inconvenient, but can also increase the cost of transporting the child car seat. Furthermore, repeated loading and unloading increases the likelihood of incorrect installation or unstable placement of the child car seat, and requires more space to store the removed child car seat, causing inconvenience to users.

[0005] Furthermore, for convenience, children often place objects such as cups and toys on the child car seat. Child car seats are typically provided with a storage cup that has a detachable structure. However, conventional storage cups are typically detachably connected to the child car seat in the vertical direction (i.e., up and down). Therefore, if a child's foot accidentally kicks the storage cup from below, the storage cup may become tilted or accidentally come off, creating a safety hazard. Furthermore, existing child car seats do not allow the position of the storage cup to be adjusted, which is inconvenient for children of different sizes. Summary of the Invention

[0006] A first aspect of the present disclosure provides a child car seat and its seat body that prevents an uncomfortable sitting feeling for a child when the seat is in a backless use mode.

[0007] In one embodiment, a first aspect of the present disclosure provides a child car seat, the child car seat including a seat assembly including a base and a seat body, a backrest, the seat body slidably connected to the base, the seat body being positionable at different positions relative to the base, and the backrest detachably connected to the seat body, the backrest including a locking element, the locking element being unable to be unlocked when the seat body does not slide into a predetermined position relative to the base, and the locking element being able to be unlocked when the seat body slides into the predetermined position relative to the base.

[0008] In one embodiment, the seat assembly further includes a movable element located between the backrest and the seat body, and when the backrest is removed from the seat body, the movable element is disengaged from the backrest and locked with the base, locking the seat body from moving relative to the base.

[0009] In one embodiment, an engagement hole is formed in the base, and when the backrest is removed from the seat main body, the movable element is disengaged from the backrest and engaged with the engagement hole.

[0010] In one embodiment, the backrest includes an abutment element, and the movable element includes a rotation rod slidably connected to the seat main body and an elastic element connected to the rotation rod, the rotation rod having a first end and a second end, when the backrest is not released, the second end of the rotation rod is pressed by the backrest, the first end is positioned outside the engagement hole and facing the engagement hole, and the elastic element is configured to apply a force to move the first end of the rotation rod toward the engagement hole.

[0011] In one embodiment, when the seat proper is slid into position relative to the base, the backrest is in a vertical position.

[0012] In one embodiment, an escape slot is formed in the rear edge of the base facing the backrest, and when the seat body is slid into position, the locking element faces the escape slot to allow the backrest to be removed.

[0013] In one embodiment, an avoidance slot facing the backrest is formed at the rear edge of the base, and when the seat body slides into a predetermined position, the locking element is unlocked through the avoidance slot, and when the seat body does not slide into the predetermined position, the locking element cannot be unlocked through the avoidance slot.

[0014] In one embodiment, the locking element includes an engagement hook and an operating element rotatably provided on the backrest, and the seat assembly further includes an engagement rod fixed to the seat body, the engagement hook being fixedly connected to the operating element, the engagement hook having a hook portion facing the engagement rod and hooking onto the engagement rod, the engagement hook sliding relative to the base together with the seat body, and when the seat body slides into the predetermined position, the hook portion faces the avoidance slot.

[0015] In one embodiment, the seat body includes a seat body having an accommodating groove formed therein for receiving the locking element, and the locking element is fixed to a lower end of the backrest.

[0016] In one embodiment, the seat assembly includes an adjustment assembly between the base and the seat body, the base including a positioning guide rail having a plurality of positioning holes spaced apart from one another, and the seat body being slidably mounted on the base and cooperating with each one of the positioning holes via the adjustment assembly.

[0017] In one embodiment, the seat body includes a guide slot for accommodating the positioning guide rail, the length of the guide slot being greater than the length of the positioning guide rail, and the seat body includes a first abutment portion, which is positioned on the side of the guide slot away from the backrest and abuts against the positioning guide rail when the seat body slides into position.

[0018] In one embodiment, the seat body includes a seat body including an upper case and a lower case connected to each other, the adjustment assembly includes a positioning element connected between the upper case and the lower case, an elastic element connected to the positioning element, and an adjustment element connected to the positioning element, the positioning element being selectively disposed in one of the positioning holes, and the adjustment element being movably connected to the lower case.

[0019] In one embodiment, the positioning element includes a positioning rod, a connecting element connected to the positioning rod, and a link element connected between the adjustment element and the connecting element. A first guide groove is formed in the lower case, the extension direction of the first guide groove is parallel to the axial direction of the positioning hole, the connecting element is movably disposed in the first guide groove, a receiving groove is formed in the connecting element, and the elastic element is disposed in the receiving groove and abuts against the connecting element.

[0020] In one embodiment, the seat body includes armrests on both sides of the seat body, and connection holes corresponding to the first guide grooves are formed on the inside of the armrests, and the positioning element is positioned in the connection holes through the positioning holes.

[0021] In one embodiment, the seat body includes an armrest, an upper portion of which is formed with a first curved slide slot and a second curved slide slot that are interlocked with each other, the backrest includes an inclined portion and side inclined portions located on both sides of the inclined portion, the slide portions protruding from the bottom of the side inclined portions, the slide portions being slidably disposed in the first curved slide slot, and the cross sections of the first curved slide slot and the second curved slide slot matching the cross section of the slide portions.

[0022] A first aspect of the present disclosure provides a seat assembly detachably connected to a seat back, the seat assembly including a base, a seat body, and a movable element, the seat body being slidably connected to the base, the seat body being positionable at different positions relative to the base, the movable element being located between the back and the seat body, and when the back is detached from the seat body, the movable element being disengaged from the back and locked with the base, thereby locking the seat body from moving relative to the base.

[0023] In one embodiment, an engagement hole is formed in the base, and when the backrest is removed from the seat main body, the movable element is disengaged from the backrest and engaged with the engagement hole.

[0024] In one embodiment, an engagement hole is formed in the base, and the movable element includes a rotation rod slidably connected to the seat main body and an elastic element connected to the rotation rod, the rotation rod having a first end and a second end, when the backrest is not released, the second end of the rotation rod is pressed by the backrest, the first end is positioned outside the engagement hole and facing the engagement hole, and the elastic element is configured to apply a force to move the first end of the rotation rod toward the engagement hole.

[0025] In one embodiment, the seat assembly includes an adjustment assembly between the base and the seat body, the base including a positioning guide rail having a plurality of positioning holes spaced apart from one another, and the seat body being slidably mounted on the base and cooperating with each one of the positioning holes via the adjustment assembly.

[0026] In one embodiment, the backrest includes a locking element, the base is formed with an avoidance slot for cooperating with the locking element, the seat body includes a seat body, the seat body is formed with an accommodating groove for receiving the locking element, and the avoidance slot at least partially overlaps with the accommodating groove.

[0027] In the child car seat and the seat assembly, the lock between the backrest and the seat main body is unlocked and the backrest can be removed from the seat main body only when the seat main body is slid to the predetermined position relative to the base. In other words, the backrest can be removed from the seat main body only when the seat main body is slid to the predetermined position relative to the base. After the backrest is removed, the movable element is disconnected from the backrest and the base, and the seat main body cannot slide relative to the base. In this way, when the child car seat is in the second mode with the backrest removed, the seat main body is only in the predetermined position, which avoids incorrect operation by the user and ensures the comfort of the child in the second mode.

[0028] A second aspect of the present disclosure provides a child car seat and a folding mechanism thereof. Specifically, the present disclosure provides a foldable child car seat. More specifically, the present disclosure provides a folding mechanism for the child car seat that has a simple structure, convenient operation, and a high safety level. Optionally, the present disclosure provides a child car seat that can be folded via a sliding connection between the seat and the backrest.

[0029] One embodiment of the second aspect provides a folding mechanism for folding a backrest of a child car seat relative to a seat portion. The folding mechanism includes a slide groove, a slide rib, and a locking structure, the slide groove being disposed on one of the seat portion and the backrest, the slide rib being disposed on the other of the seat portion and the backrest, and the locking structure being operable to switch between a locked position and an unlocked position. When the locking structure is in the locked position, the backrest is fixed to the seat portion and is in an unfolded state, and when the locking structure is in the unlocked position, the backrest is foldable relative to the seat portion due to sliding engagement between the slide groove and the slide rib and is in a folded state.

[0030] In one embodiment, the slide grooves are arranged on both sides of the seat portion, and the slide ribs are arranged on both sides of the backrest.

[0031] In one embodiment, the slide grooves are arranged on the upper surface of the armrest on both sides of the seat portion.

[0032] In one embodiment, the slide ribs are disposed on the bottom surface of each of the two side wings of the backrest, and correspond to the slide grooves.

[0033] In one embodiment, the armrests on both sides of the seat section include a front armrest and a rear armrest spaced apart from each other, wherein in the unfolded state, the slide rib is in the rear slide groove of the rear armrest, and in the folded state, the slide rib is in the front slide groove of the front armrest.

[0034] In one embodiment, an imaginary vertical plane is defined between the front armrest and the rear armrest. The imaginary vertical plane is located in the gap between the front armrest and the rear armrest in the front-to-rear direction and is perpendicular to the base. When the backrest of the child car seat is locked to the seat, it is located on the rear side of the imaginary vertical plane. When the backrest is unlocked from the seat, it can move forward along the rear armrest, gradually passing through the imaginary vertical plane, and continue to move forward along the front armrest until it is folded against the seat. At this time, the entire backrest is located in front of the imaginary vertical plane.

[0035] In one embodiment, the slide rib and the slide groove have complementary T-shaped structures, and the cross section of the slide groove is an inverted T-shaped.

[0036] In one embodiment, the locking structure is disposed on the underside of the backrest, and the folding mechanism further includes an engagement rod fixed to the child seat, and the locking structure is in the locked position when engaged with the engagement rod and in the unlocked position when disengaged from the engagement rod.

[0037] In one embodiment, the locking structure includes an operating element, a locking hook assembly, and a connecting rod, wherein the operating element is at least partially exposed and disposed on the backrest, the locking hook assembly is pivotally connected to a fixed rod of the backrest and protrudes from an underside of the backrest, the locking hook assembly engages with the engaging rod when the locking structure is in the locked position, the connecting rod is connected between the locking hook assembly and the operating element, the connecting rod is fixedly connected to the locking hook assembly and movably connected to the operating element, and the locking hook assembly can be disengaged from the engaging rod by operating the operating element.

[0038] In one embodiment, the locking hook assembly includes a first locking hook and a second locking hook, each of which has one end connected to the operating element via a corresponding one of two connecting rods, the other ends of which are hook-shaped and face each other, and the central portions of the first locking hook and the second locking hook are rotatably connected to the fixing rod of the seat back.

[0039] In one embodiment, one of the two connecting rods is arranged at an upper part of the operating element, and the other of the two connecting rods is arranged at a lower part of the operating element, the connecting rod being rotatably connected to the operating element at the lower part, and the connecting rod being rotatably and slidably connected to the operating element at the upper part.

[0040] In one embodiment, the locking structure includes two locking hook assemblies, the two locking hook assemblies being symmetrically arranged about a central axis of the backrest.

[0041] In one embodiment, the folding mechanism further includes an elastic restoring element having one end fixed to the frame of the seat back and another end fixed to the locking structure, the elastic restoring element applying a force to position the locking structure in the locked position.

[0042] In one embodiment, the other end of the elastic resilient element is fixed to the operating element, or to the locking hook assembly, or to the connecting rod.

[0043] In one embodiment, the backrest is removable from the seat in a folded state.

[0044] The present disclosure also provides a child car seat, which includes a seat portion, a backrest, and a folding mechanism according to any of the above embodiments, allowing the backrest to be folded relative to the seat portion to fold the child car seat.

[0045] In one embodiment, the child car seat provides a storage device that is detachably mounted in the slide groove of the seat portion.

[0046] A third aspect of the present disclosure provides a storage device, the storage device being detachably attached to a seat portion of a child car seat, the storage device including a connecting portion and a storage structure, the connecting portion being slidably connected to the child car seat in a forward / rearward direction, and the storage structure being fixed to the connecting portion for storing an object.

[0047] In one embodiment, the connection portion is slidable in the front-rear direction along the connection structure of the child car seat, and is located at at least one position on the connection structure.

[0048] In one embodiment, the connection portion includes a first sliding portion that extends from one end of the connection portion, is positioned below the connection portion, and slidably cooperates with a corresponding second sliding portion provided on the connection structure.

[0049] In one embodiment, the first slide portion is a slide rib having an inverted T-shape, and the second slide portion is a slide groove having a shape complementary to that of the slide rib.

[0050] In one embodiment, the storage device further includes a positioning element, the positioning element being disposed on the connection portion of the storage device, and the storage device is positioned at different positions on the connection structure via the positioning element.

[0051] In one embodiment, the storage device further includes a positioning element disposed on the connection portion of the storage device, the positioning element being rotatably connected to the connection portion and having an engagement position in which the connection structure is engaged and a disengagement position in which the connection structure is disengaged.

[0052] In one embodiment, one end of the positioning element is rotatably connected to the connection portion, and the positioning element includes a positioning protrusion, which is arranged on an underside of the other end of the positioning element for engaging with the child seat, thereby positioning the connection portion on the child seat.

[0053] In one embodiment, the positioning element further includes a resilient arm, the resilient arm having an arm-like structure extending from one end of the positioning element toward the other end of the positioning element, and the tail end of the resilient arm abuts against the connection portion to always provide a force urging the positioning protrusion toward the child seat.

[0054] In one embodiment, the positioning element further includes an operating portion, and the operating portion is pulled to overcome the elastic rotation of the elastic arm, thereby disengaging the positioning protrusion from the child car seat.

[0055] In one embodiment, the positioning element further includes an actuator, the actuator being operable to move the positioning element between the engaged position and the disengaged position.

[0056] A third aspect of the present invention provides a child car seat, the child car seat including the storage device according to any one of the above aspects and a seat unit, the storage device being disposed in the seat unit.

[0057] In one embodiment, the second sliding portion of the child car seat is provided on an upper surface of an armrest on at least one side of the seat portion.

[0058] In one embodiment, the second sliding portion of the child car seat further includes at least one positioning hole that engages with the positioning protrusion.

[0059] In one embodiment, the child seat further includes a base, side covers, and a bottom cover, the side covers being fixedly connected to both sides of the seat, and the bottom cover being fixedly connected between the base and the seat portion.

[0060] In one embodiment, the child seat further includes a backrest, the backrest being slidably connected to the seat portion along the second sliding portion of the child seat to fold or unfold the backrest relative to the seat portion. [Brief explanation of the drawings]

[0061] The accompanying drawings are included to provide a further understanding of the present disclosure, are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure, and together with the description, serve to explain the concepts of the present disclosure.

[0062] [Figure 1] 1 is a perspective view schematically illustrating a child car seat according to an embodiment of the first aspect of the present disclosure. [Figure 2] 2 is a schematic diagram showing the inside of the seat body in FIG. 1. [Figure 3] 2 shows a schematic perspective view of the backrest in FIG. 1; [Figure 4] 3 is a schematic enlarged view of a portion A in FIG. 2. [Figure 5] 2 is a schematic top view of the child car seat of FIG. 1 in place; FIG. [Figure 6] 6 is a cross-sectional view schematically showing the child car seat taken along line CC in FIG. 5. FIG. [Figure 7] 6 shows a schematic cross-sectional view of the child car seat of FIG. 5 when out of position; [Figure 8] 3 shows a schematic enlarged view of part B in FIG. 2. [Figure 9] FIG. 10 is a cross-sectional view schematically illustrating a child car seat according to another embodiment of the first aspect of the present disclosure. [Figure 10]2 shows a schematic perspective view of the seat assembly in FIG. 1; [Figure 11] 11 shows a schematic cross-sectional view of the child car seat taken along line DD in FIG. 10. [Figure 12] FIG. 10 is a perspective view schematically illustrating a child car seat according to another embodiment of the first aspect of the present disclosure. [Figure 13] 13 shows a schematic view of the child car seat of FIG. 12 with the backrest removed. [Figure 14] FIG. 10 is a perspective view showing a child car seat according to an embodiment of the second aspect of the present disclosure. [Figure 15] FIG. 10 is a perspective view showing a child car seat in an unfolded state according to an embodiment of the second aspect of the present disclosure. [Figure 16] 16 is a perspective view of the child car seat of FIG. 15 with the locking structure in the unlocked position and the backrest beginning to fold relative to the seat portion. FIG. [Figure 17] 17 is a perspective view showing the child car seat of FIG. 16 further folded. FIG. [Figure 18] FIG. 17 is a perspective view of the child car seat of FIG. 16 in an unfolded state. [Figure 19] 1 shows a perspective view of a seat portion of a child car seat according to an embodiment of the second aspect of the present disclosure. [Figure 20] 1 shows a perspective view of a backrest of a child car seat according to an embodiment of the second aspect of the present disclosure. [Figure 21a] 21a and 21b are diagrams showing a child car seat when the locking structure is in the locked position in an embodiment of the second aspect of the present disclosure, and FIG. 21a is a front view of the child car seat when the locking structure is in the locked position. [Figure 21b] 21b is a cross-sectional view taken along line EE in FIG. 21a, showing the child car seat when the locking structure is in the locked position in an embodiment of the second aspect of the present disclosure. FIG. [Figure 21c]21c is a partial enlarged view of block F shown in FIG. 21b, showing a child car seat when the locking structure is in a locked position in an embodiment of the second aspect of the present disclosure. FIG. [Figure 21d] 21a and 21b show a child car seat when the locking structure is in the locked position in an embodiment of the second aspect of the present disclosure, and FIG. 21d shows a perspective view showing the child car seat when the locking structure is in the locked position. [Figure 21e] 21e shows a partial enlarged view of the locking structure shown in FIG. 21d, illustrating a child car seat when the locking structure is in a locked position in an embodiment of the second aspect of the present disclosure. FIG. [Figure 22a] 22a is a front view of the child car seat when the locking structure is in the unlocked position, in accordance with an embodiment of the second aspect of the present disclosure; FIG. 22b is a front view of the child car seat when the locking structure is in the unlocked position; FIG. [Figure 22b] 22a and 22b are views showing a child car seat when the locking structure is in an unlocked position in an embodiment of the second aspect of the present disclosure, and FIG. 22b is a front view of the child car seat when the locking structure is in the unlocked position. [Figure 22b] 22a and 22b show a child car seat in an embodiment of the second aspect of the present disclosure when the locking structure is in the unlocked position, and FIG. 22b is a front view of the child car seat when the locking structure is in the unlocked position, and FIG. 22b shows a cross-sectional view taken along line GG shown in FIG. 22a. [Figure 22c] 22c is a partial enlarged view of block H in FIG. 22b, showing a child car seat when the locking structure is in an unlocked position in an embodiment of the second aspect of the present disclosure. FIG. [Figure 22d] 22a and 22b show a child car seat when the locking structure is in the unlocked position in an embodiment of the second aspect of the present disclosure, and FIG. 22d shows a perspective view showing the child car seat when the locking structure is in the unlocked position. [Figure 22e]22a and 22b show a child car seat with the locking structure in an unlocked position in an embodiment of the second aspect of the present disclosure, and FIG. 22e shows the child car seat in the locking structure of FIG. 22d. [Figure 23] FIG. 2 is a perspective view showing a child car seat with a storage device attached to the seat portion. [Figure 24] 10 shows a schematic perspective view of a sheet in an embodiment of the third aspect of the present disclosure. [Figure 25] 10A and 10B show schematic side views of a seat in an embodiment of the third aspect of the present disclosure; [Figure 26] 10A and 10B show schematic perspective views of a storage device in an embodiment of the third aspect of the present disclosure; [Figure 27] 10 shows a schematic perspective view of a seat in an embodiment of the third aspect of the present disclosure, in which a storage device is arranged on a side of the seat; [Figure 28] 10 shows a schematic perspective view of a seat in an embodiment of the third aspect of the present disclosure, in which a storage device on one side of the seat is in an installed state and a storage device on the other side of the seat is in the process of being installed; [Figure 29] 10 is a perspective view of a seat according to an embodiment of the third aspect of the present disclosure, in which a storage device is provided on each of both sides of the seat; [Figure 30] FIG. 30 is a top view of the seat portion of FIG. 29. [Figure 31] 31 is a cross-sectional view of the seat portion taken along line JJ in FIG. 30. [Figure 32] FIG. 32 is an enlarged view of a portion K shown in FIG. [Figure 33] FIG. 30 is a perspective view of the seat portion of FIG. 29 seen from a different angle. [Figure 34] FIG. 34 is an enlarged view of the part Q shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0063] Exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. While the present disclosure is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the accompanying drawings. However, the present disclosure should not be construed as limited to the embodiments set forth herein, but on the contrary, covers all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure.

[0064] The present disclosure will now be described in detail with reference to the accompanying drawings.

[0065] 1 and 2, an embodiment of a first aspect of the present disclosure provides a child car seat 110. The child car seat includes a seat assembly 120 and a backrest 130 that is detachably provided on the seat assembly 120. The child car seat 110 has a first mode in which the backrest 130 is provided and a second mode in which the backrest 130 is removed.

[0066] The seat assembly 120 includes a base 121, a seat body 122, and an adjustment assembly 123 between the base 121 and the seat body 122. The seat body 122 is slidably connected to the base 121 and can move relative to the base 121 so as to be positioned in different positions. Specifically, when a user operates the adjustment assembly 123, the position of the seat body 122 relative to the base 121 is adjusted, thereby changing the inclination angle of the seat surface of the seat assembly 120 relative to a horizontal reference plane.

[0067] 1 and 2 , in one embodiment, the base 121 includes a curved upper surface 1211 and two positioning guide rails 1212. Each of the positioning guide rails 1212 includes a plurality of positioning holes 12121 spaced apart from one another. The seat body 122 is provided with two guide slots 1220 for accommodating the two positioning guide rails 1212. The length of the guide slots 1220 is greater than the length of the positioning guide rails 1212. The seat body 122 is slidably provided on the base 121 and can move back and forth along the positioning guide rails 1212.

[0068] As shown in FIG. 1, the seat main body 122 includes a seat body 1221 (sometimes referred to as a "seat portion") and armrests 1222 provided on both sides of the seat body 1221. The seat body 1221 includes an upper case 12211 and a lower case 12212 that are connected to each other. Referring to FIG. 2, a guide slot 1220 is formed in the lower case 12212. The positioning guide rail 1212 of the base 121 is provided throughout the lower case 12212 via the corresponding guide slot 1220. Furthermore, the lower case 12212 is also provided with a first abutment portion 12213. The first abutment portion 12213 is provided on the side of the guide slot 1220 that is remote from the backrest 130. When the seat body 122 slides backward into position relative to the base 121, the first abutment portion 12213 is configured to abut against the positioning guide rail 1212, thereby restricting further backward sliding of the seat body 122.

[0069] That is, when the user cannot continue to slide the seat main body 122 rearward, the seat main body 122 is in a predetermined position, i.e., the backrest 130 is in a position where it can be removed from the seat main body 122. Similarly, the lower case 12212 is also provided with a second abutment portion (not shown). The second abutment portion is provided on a side of the guide slot 1220 close to the backrest 130, and is configured to limit further forward sliding of the seat main body 122 when the seat main body 122 slides forward and abuts against the positioning guide rail 1212. It can be understood that one or both of the first abutment portion 12213 and the second abutment portion may also be provided on the upper case 12211.

[0070] As shown in FIG. 2 , the adjustment assembly 123 is configured to be positioned with respect to different positioning holes 12121 to position the seat body 122 when the seat body 122 slides to different positions. In one embodiment, the adjustment assembly 123 includes a positioning element 1231 connected between the upper case 12211 and the lower case 12212, a first elastic element 1232 connected to the positioning element 1231, and an adjustment element 1233 connected to the positioning element 1231. The positioning element 1231 is selectively disposed in one of the positioning holes 12121. The adjustment element 1233 is movably connected to the lower case 12212 and can be driven to disengage the positioning element 1231 from the positioning hole 12121 under the action of an external force. In one embodiment, a portion of the adjustment element 1233 penetrates the bottom of the lower case 12212, allowing a user to operate the adjustment element 1233 to disengage the positioning element 1231 from the positioning hole 12121. When the positioning element 1231 is disengaged from the positioning hole 12121, the user can push the backrest 130, causing the backrest 130 and the seat body 122 to slide relative to the base 121, thereby adjusting the position of the seat body 122 on the base 121. When the positioning rod 12311 moves to the other positioning hole 12121 and the external force acting on the adjustment element 1233 is released, the positioning element 1231 can be positioned again in the other positioning hole 12121 by the elastic restoring force of the first elastic element 1232. In this way, the seat body 122 and the backrest 130 are fixed to the base 121 again.

[0071] In one embodiment, the positioning element 1231 includes a positioning rod 12311, a connecting element 12312 connected to the positioning rod 12311, and a link element 12313 connected between the adjustment element 1233 and the connecting element 12312. Furthermore, two first guide grooves 12214 are provided in the lower case 12212, and the extension direction of each first guide groove 12214 is parallel to the axial direction of the positioning hole 12121. Each connecting element 12312 is movably disposed in the corresponding first guide groove 12214 and moves along the first guide groove 12214 toward or away from the positioning hole 12121, thereby causing the positioning rod 12311 to advance into the positioning hole 12121.

[0072] A connecting hole (not shown) corresponding to the first guide groove 12214 is formed on the inner side of the armrest 1222. The positioning rod 12311 passes through the positioning hole 12121 and is disposed in the connecting hole, thereby more stably connecting the seat main body 122 and the base 121 to each other. A receiving groove 12314 is formed in the connecting element 12312, and the first elastic element 1232 is disposed in the receiving groove 12314 and abuts against the connecting element 12312. Therefore, after the positioning rod 12311 is released from the positioning hole 12121, the positioning rod 12311 extends to the other positioning hole 12121 through elastic force during the process of the seat main body 122 sliding relative to the base 121. In addition, two sets of second guide grooves 12215 are formed in the lower case 12212. The two link elements 12313 of the two positioning elements 1231 are arranged to cross each other, and each of the connecting elements 2213 is movably arranged in a pair of second guide grooves 12215. The two link elements 12313 are connected to the adjustment element 1233. A user can move the adjustment element 1233 away from the backrest 130 to drive the movement of the two link elements 12313, thereby driving the two positioning rods 12311 to disengage from their respective positioning holes 12121. After the user releases the adjustment element 1233, the backrest 130 and the seat main body 122 slide under the user's push until the positioning rod 12311 faces one of the positioning holes 12121, and the positioning rod 12311 is inserted into the positioning hole 12121 under the action of the first elastic element 1232, thereby fixing the seat main body 122 to the base 121 again.

[0073] The backrest 130 is detachably connected to the seat body 122. When the backrest 130 is connected to the seat body 122, the backrest 130 can slide relative to the base 121 together with the seat body 122, and the child car seat 110 can be used by a younger child in the first mode with the backrest 130 provided.

[0074] 3 , the backrest 130 includes a locking element 140. When the locking element 140 is unlocked, the backrest 130 can be removed from the seat main body 122. However, in this embodiment, the locking element 140 may be unlocked only when the seat main body 122 is moved into a predetermined position relative to the base 121. That is, when the seat main body 122 does not slide into a predetermined position relative to the base 121, the locking element 140 cannot be unlocked and the backrest 130 cannot be removed from the seat main body 122. In this way, it is possible to prevent the backrest 130 from being removed by a user when the seat main body 122 is not adjusted to an appropriate position, thereby affecting the comfort of a child sitting thereon.

[0075] Referring to Fig. 3, in one embodiment, the locking element 140 includes an engagement hook 143 and an operating element 141 rotatably provided on the backrest 130. Specifically, referring to Figs. 2 and 4, the locking element 140 further includes a first fixed shaft 142 and a second fixed shaft 145 fixed to the backrest 130. The operating element 141 and the engagement hook 143 are rotatably connected to the first fixed shaft 142, and one end of the engagement hook 143 is connected to the operating element 141 via the second fixed shaft 145. In this embodiment, an operating port 1411 is provided at an upper end of the operating element 141, which is operated by a user to rotate the operating element 141.

[0076] When the seat body 122 does not slide into a predetermined position relative to the base 121, the locking element 140 locks the backrest 130 and the seat body 122 to prevent the backrest 130 from moving relative to the seat body 122. Referring to FIGS. 5 and 6, when the seat body 122 slides into a predetermined position relative to the base 121 as shown in FIG. 6, the locking element 140 releases the lock between the backrest 130 and the seat body 122, allowing the backrest 130 to move relative to the seat body 122 and be detached from the seat body 122. At this time, the child car seat 110 enters a second mode in which the backrest 130 is detached (see FIG. 10), and is used for older children. As shown in FIG. 6, when the seat body 122 slides into a predetermined position relative to the base 121, the center position of the seat body 122 is aligned with the center position of the base 121, and the backrest 130 is in a vertical position. This arrangement allows a child to sit comfortably in the seat body 122 after the backrest 130 is removed.

[0077] 6, the seat assembly 120 further includes an engagement rod 129 connected to the seat main body 122. Referring to FIGS. 4 and 6, one end of the engagement hook 143 is connected to the operating element 141 via a second fixed shaft 145, and the other end of the engagement hook 143 faces the engagement rod 129 and has a hook portion 1431 for hooking the engagement rod 129.

[0078] Furthermore, in this embodiment, the base 121 is formed with an avoidance slot 1214 for mating with the locking element 140. Specifically, the avoidance slot 1214 is formed on the rear edge of the base 121. When the seat main body 122 slides into position, the hook portion 1431 of the engagement hook 143 corresponds to the position of the avoidance slot 1214. In one embodiment, an orthogonal projection of the hook portion 1431 of the engagement hook 143 fits within the avoidance slot 1214. When it is necessary to remove the backrest 130 from the seat main body 122, the operating element 141 is rotated to drive the hook portion 1431 of the engagement hook 143 to rotate counterclockwise around the first fixed shaft 142, thereby disengaging the hook portion 1431 from the engagement rod 129. Providing the avoidance slot 1214 in the base 121 prevents the hook portion 1431 from interfering with and preventing it from being disengaged from the engagement rod 129 during rotation.

[0079] 4 again, in one embodiment, the locking element 140 further includes an elastic restoring element 147 connected to the second fixed shaft 145 together with the operating element 141 to restore the operating element 141 when the user releases the operating element 141. Furthermore, one end of the elastic restoring element 147 is connected to the second fixed shaft 145, and the other end of the elastic restoring element 147 is connected to the backrest 130. When the external force applied to the operating element 141 is removed, the operating element 141 is restored by the elastic force of the elastic restoring element 147, and the engagement hook 143 can be driven to restore its position.

[0080] In another embodiment, the operating element 141 is connected to the backrest 130 with a transitional fit. In this manner, even if the user releases the operating element 141 after the hook portion 1431 has disengaged from the engagement rod 129, the operating element 141 will not automatically re-hook the engagement rod 129. In this manner, if the engagement between the hook portion 1431 and the engagement rod 129 is released but the backrest 130 and the seat main body 122 are not separated, the backrest 130 and the seat main body 122 can continue to maintain an unlocked state. On the other hand, when the backrest 130 is attached and it is necessary to lock the backrest 130 and the seat main body 122, the operating element 141 may be rotated in the opposite direction so that the hook portion hooks onto the engagement rod 129.

[0081] When the backrest 130 is not removed, the engagement hook 143 can slide relative to the base 121 together with the seat body 122. Therefore, the hook portion 1431 may be movable relative to the base 121 together with the seat body 122. Referring to FIG. 7 , when the seat body 122 is moved out of position relative to the base 121, the hook portion 1431 of the engagement hook 143 is misaligned with the avoidance slot 1214 and moves away from it. That is, the orthogonal projection of the engagement hook 143 on the base 121 is located outside the avoidance slot 1214.

[0082] In this case, the rotation of the engagement hook 143 is interfered with by the base 121, and the user cannot rotate the operating element 141 or disengage the hook portion 1431 from the engagement rod 129. Therefore, when the seat main body 122 is moved to a non-predetermined position relative to the base 121, the user cannot rotate the operating element 141 to release the lock between the backrest 130 and the seat main body 122, and cannot remove the backrest 130 from the seat main body 122. In this way, it is possible to prevent the user from removing the backrest 130 when the seat surface of the seat main body 122 remains inclined with respect to the reference horizontal plane, thereby preventing an impact on the comfort of the occupant. Furthermore, in this embodiment, after the backrest 130 is removed from the seat main body 122, the movement of the seat main body 122 is locked, and the position of the seat main body 122 cannot be adjusted relative to the base 121.

[0083] 2 and 8, the seat assembly 120 further includes a movable element 124 connected between the backrest 130 and the seat main body 122. In one embodiment, an engagement hole 12122 is formed on the positioning guide rail 1212 of the base 121, and one end of the movable element 124 is disposed corresponding to the position of the engagement hole 12122. In this embodiment, the engagement hole 12122 is open facing the upper case 12211, but the present disclosure does not limit the position, number, and direction of the engagement hole 12122. Furthermore, the backrest 130 in this embodiment further includes an abutment element 136 located on the inside, and an open slot 1361 is formed at the end of the abutment element 136.

[0084] In detail, the movable element 124 includes a rotating rod 1241 rotatably connected to the seat main body 122, and a second elastic element 1242. The rotating rod 1241 includes a first end 12411 and a second end 12412. Referring to FIGS. 8 and 9, the first end 12411 faces the engagement hole 12122, and the second end 12412 is disposed in the open slot 1361 and abuts against the abutting element 136. Therefore, when the backrest 130 is not removed, the second end 12412 of the rotating rod 1241 is pressed by the abutting element 136, and the first end 12411 is kept outside the engagement hole 1212. It can be understood that the abutting element 136 does not necessarily have to include the open slot 1361, and the second end 12412 directly abuts against the lower surface of the abutting element 136. In this way, when the seat proper 122 together with the backrest 130 moves relative to the base 121 , the movable element 124 does not interfere with the movement of the seat proper 122 .

[0085] 8, the second elastic element 1242 is connected to the rotating rod 1241 and is configured to apply a force that moves the first end 12411 toward the engagement hole 12122 of the base 121. In one embodiment, an axial hole (not shown) is formed in the upper case 12211, the rotating rod 1241 has a rotating shaft 1243 that is housed in the axial hole and protrudes from the rotating rod, and the second elastic element 1242 is a torsion spring sleeved around the rotating shaft 1243. One end of the torsion spring abuts against the lower case 12212, and the other end of the torsion spring abuts against the upper surface of the rotating rod 1241.

[0086] 10 and 11 , once the backrest 130 and the seat body 122 have been moved to a predetermined position, the backrest 130 may be removed. An installation port 1221h is formed on the upper surface of the seat body 1221, and the installation port 1221h is configured to attach an abutment element 136 (in combination with FIG. 1 ). After the backrest 130 is removed, the abutment against the rotation rod 1241 is released, and a portion of the rotation rod 1241 is exposed from the installation port 1221h. At this time, the second elastic element 1242 applies a force to the first end 12411 of the rotation rod 1241, so that the first end 12411 of the rotation rod 1241 engages with the engagement hole 12122, locking the seat body 122 to the base 121 and preventing the seat body 122 from sliding relative to the base 121. In detail, after the backrest 130 is removed, the abutment element 136 is separated from the rotating rod 1241, the force acting on the second end 12412 of the rotating rod 1241 is removed, and the second end 12412 of the rotating rod 1241 is exposed from the installation port 1221h. The elastic force of the second elastic element 1242 causes the first end 12411 to engage with the engagement hole 12122, thereby locking the seat body 122 and the base 121 together.

[0087] According to the child car seat 110, the lock between the backrest 130 and the seat main body 122 is released and the backrest 130 is removed from the seat main body 122 only when the seat main body 122 has slid to a predetermined position relative to the base 121. In other words, the backrest 130 is removed from the seat main body 122 only when the seat main body 122 has slid to a predetermined position relative to the base 121. After the backrest 130 is removed, the backrest 130 is separated from the movable element 124 (i.e., does not abut against the movable element 124), so that the movable element 124 is locked with the base 121. At this time, the seat main body 122 can no longer slide relative to the base 121, and the user can no longer adjust the position of the seat main body 122 relative to the base 121. In other words, due to the mutual cooperation between the movable element 124 and the engagement hole 1212, after the backrest 130 is removed from the seat main body 122, the movement of the seat main body 122 is locked and it cannot move any further. In this way, when the child seat 110 is in the second mode with the backrest 130 removed, the seat body 122 is only in a predetermined position, thereby avoiding incorrect operation by the user and ensuring the comfort of the child in the second mode.

[0088] 2 and 8, when the backrest 130 is reattached to the seat main body 122, in combination with FIG. 1, the abutment element 136 of the backrest 130 extends into the installation port 1221h and presses against the movable element 124, and the abutment element 136 presses against the second end 12412. At the same time, the first end 12411 rotates away from the engagement hole 12122. When the backrest 130 is completely attached to the seat main body 122, the first end 12411 is disengaged from the engagement hole 12122. In this way, the angle between the seat main body 122 and the backrest 130 can be adjusted relative to the base 121.

[0089] Referring to FIG. 10 , a first curved slide slot 12221, a second curved slide slot 12222, and an opening 12223 between the first curved slide slot 12221 and the second curved slide slot 12222 are formed in the upper part of the armrest 1222. Further referring to FIG. 1 , the backrest 130 includes an inclined portion 131 and side inclined portions 132 located on both sides of the inclined portion 131. A slide portion 1321 protrudes from the bottom of each of the side inclined portions 132, and the slide portion 1321 is slidably disposed in the first curved slide slot 12221. The seat assembly 120 further includes an object placement element 125 detachably connected to the second curved slide slot 12222 for placing an object thereon. In one embodiment, the cross section of each of the first curved slide slot 12221 and the second curved slide slot 12222 matches the cross section of the slide portion 1321. In particular, the cross section of each of the first curved slide slot 12221 and the second curved slide slot 12222 is inverted T-shaped, and the cross section of the slide portion 1321 is inverted T-shaped to match the cross section of the first curved slide slot 12221.

[0090] In this embodiment, when the object placement element 125 is removed from the second curved sliding slot 12222, the sliding portion 1321 sequentially slides from the first curved sliding slot 12221 to the opening 12223 and the second curved sliding slot 12222 and extends from the second curved sliding slot 12222, thereby removing the backrest 130 from the seat main body 122. In another embodiment, a cross section of a portion of the first curved sliding slot 12221 cooperating with the opening 12223 is inverted T-shaped, and a cross section of a portion of the first curved sliding slot 12221 away from the opening 12223 is rectangular. In addition, a cross section of the sliding portion 1321 located at the front end of the bottom surface of the side inclined portion 132 away from the front end of the bottom surface of the side inclined portion 132 is inverted T-shaped, and a cross section of a portion of the side inclined portion 132 away from the front end of the bottom surface is rectangular. In this embodiment, when the sliding portion 1321 slides along the first curved sliding slot 12221 until the inverted T-shaped cross section of the sliding portion 1321 is completely positioned in the opening 12223, the user can lift the backrest 130 upward to remove the sliding portion 1321 from the first curved sliding slot 12221 and remove the backrest 130 from the seat main body 122. In this embodiment, the user can remove the backrest 130 without removing the object placement element 125.

[0091] In the above-described embodiment, when the seat main body 122 slides into place, the avoidance slot 1214 is located below the hook portion 1431, providing a reserved space for the rotation of the engagement hook 143. A user can rotate the operating element 141 to unlock the engagement hook 143 and the engagement rod 129, and then push the backrest 130 forward along the first curved slide slot 12221 to remove the backrest 130. It can be understood that in the removal process, the user does not release the operating element 141 until the hook portion 1431 can no longer hook the engagement rod 129 when rotating in the opposite direction, and therefore the backrest 130 and the seat main body 122 may remain in an unlocked state even after the operating element 141 is released. When the seat main body 122 is not in the predetermined position, the hook portion 1431 is away from the avoidance slot 1214, and the user cannot rotate the operating element 141 to unlock the hook portion 1431 and the engagement rod 129, and further cannot remove the backrest 130 from the seat main body 122.

[0092] As shown in FIG. 10 , in this embodiment, an accommodation groove 12216 is formed in the rear edge of the seat body 1221, and the accommodation groove 12216 corresponds to the avoidance slot 1214 of the base 121. When the seat main body 122 slides into place, the avoidance slot 1214 at least partially overlaps with the accommodation groove 12216. Therefore, after the backrest 130 is removed, the avoidance slot 1214 of the base 121 is exposed from the accommodation groove 12216. When the backrest 130 is reattached to the seat main body 122, the locking element 140 of the backrest 130 is positioned in the accommodation groove 12216, and the hook portion 1431 of the engagement hook 143 engages with the engagement rod 129 of the seat main body 122 (see FIG. 6 ), thereby locking the backrest 130 and the seat main body 122 together.

[0093] 12 and 13 , in another embodiment, a locking element 140′ is fixed to the lower end of the backrest 130, and an accommodation groove 12216 is formed in the rear edge of the seat body 1221 toward the base 121. The locking element 140′ is disposed in the accommodation groove 12216, and an end of the locking element 140′ slides along the curved upper surface 1211 of the base 121 together with the seat body 1221. The accommodation groove 12216 may be a curved groove, and the locking element 140′ is attached between the curved groove and the curved upper surface 1211. An avoidance slot (not shown) facing the backrest 130 is formed in the rear edge of the base 121, and the locking element 140′ faces the avoidance slot when the seat body 122 is placed in position.

[0094] In the above embodiment, when the seat main body 122 is positioned in a predetermined position and the user pushes the backrest 130 forward, the escape slot is located below the locking element 140′, providing a reserved space for the locking element 140′ to rotate. Therefore, when the backrest 130 slides along the first curved slide slot 12221 to move the backrest 130 upward and rotate at the same time, the locking element 140′ may rotate away from the base 121 and disengage from the receiving groove 12216, causing the backrest 130 to come off the seat main body 122. When the seat body 122 is placed in an out-of-position and the user pushes the backrest 130 forward, the locking element 140' is located on the curved upper surface 1211 and abuts against the curved upper surface 1211, thereby preventing the backrest 130 from sliding along the first curved slide slot 12221 and preventing the backrest 130 from being removed from the seat body 122.

[0095] According to one embodiment, a seat assembly 120 as described above is provided for detachable connection to a seat back 130. The seat assembly 120 includes a base 121, a seat body 122, an adjustment assembly 123 connected between the base 121 and the seat body 122, and a movable element 124 connected between the seat back 130 and the seat body 122. The seat body 122 is slidably connected to the base 121 and can be positioned in different positions relative to the base 121 by a user operating the adjustment assembly 123. When the seat body 122 does not slide into position relative to the base 121, the locking elements 140, 140' are disengaged from the corresponding escape slots. Rotation of the locking elements 140, 140' interferes with the base 121, and the locking elements 140, 140' cannot be unlocked by the user, thereby preventing the seat back 130 from moving relative to the seat body 122 and preventing the seat back 130 from being removed from the seat body 122. When the seat body 122 slides into position relative to the base 121, the corresponding avoidance slots are located below the locking elements 140, 140', providing reserved space for the locking elements 140, 140' to rotate, and the locking elements 140, 140' can be unlocked by the user, causing the backrest 130 to move relative to the seat body 122, and then the backrest 130 can be removed from the seat body 122.

[0096] Furthermore, after the backrest 130 is removed, the movable element 124 is disengaged from the backrest 130 and locked with the base 121, thereby locking the movement of the seat body 122. The above-described seat assembly 120 allows the backrest 130 to be removed only when the seat body 122 slides into a predetermined position relative to the base 121, and after the backrest 130 is removed, the seat body 122 and the base 121 are fixed, thereby maintaining the seat body 122 in a predetermined position and providing a comfortable ride for the child in a use mode in which the backrest is not provided.

[0097] Furthermore, to solve the problems of the prior art, there is an urgent need for a foldable child car seat, especially a folding mechanism for the child car seat, which has a simple structure, is easy to operate, and has a high safety level, so that the child car seat can be folded when not in use, thereby reducing space occupancy and transportation costs.

[0098] An embodiment of a second aspect of the present disclosure provides a foldable child car seat.

[0099] Referring to Fig. 14, Fig. 14 is a perspective view showing a child car seat according to an embodiment of the present disclosure. The child car seat 1 includes a seat portion 210 (similar to the "seat body 1221" described in the first aspect of the present disclosure), a backrest 220, and a folding mechanism for folding the child car seat. Specifically, the folding mechanism folds the backrest 220 of the child car seat 21 relative to the seat portion 210, thereby folding the entire seat. Furthermore, the child car seat 21 may further include a headrest 230, which is disposed on the backrest 220 and may be adjusted in the longitudinal direction.

[0100] As shown in Fig. 14, the folding mechanism of the child car seat 21 of the present disclosure includes a slide groove 2130, a slide rib 2230, and a lock structure (the lock structure in Fig. 14 is covered by a cover plate 2240, with only its operating element 2215 exposed; for the specific structure of the lock structure, see Figs. 21d and 22d, which will be described later). The slide groove 2130 is disposed on one of the seat 210 and the backrest 220, and the slide rib 2230 is disposed on the other of the seat 210 and the backrest 220. For convenience of explanation, an example has been given in which the slide groove 2130 is disposed on the seat 210 and the slide rib 2230 is disposed on the backrest 220, but the present disclosure is not limited thereto.

[0101] In one embodiment, the sliding grooves 2130 are arranged on both sides of the seat 210, and the sliding ribs 2230 are arranged on both sides of the backrest 220 (e.g., on both side wings of the backrest 220). Specifically, the sliding grooves 2130 are arranged on the upper surfaces of the armrests 2120 on both sides of the seat 210, and the sliding ribs 2230 are arranged on the lower surfaces of the both side wings of the backrest 220, corresponding to the sliding grooves 2130 in the seat 210. For example, the position of the sliding ribs 2230 corresponds to the position of the sliding grooves 2130 in the left-right direction, and they cooperate and connect with each other. Furthermore, the sliding ribs 2230 and the sliding grooves 2130 have complementary structures, for example, complementary T-shapes, i.e., the sliding ribs 2230 and the sliding grooves 2130 have complementary corresponding structures, and the cross section of the sliding groove 2130 has an inverted T-shape. However, the present disclosure is not limited thereto, ie, the slide rib 2230 and the slide groove 2130 may have other shapes and may cooperate with each other to slide relative to each other.

[0102] 15 to 18 each show different stages (processes) of the child car seat 21 from an unfolded state to a fully folded state in an embodiment of the present disclosure. Fig. 15 shows the child car seat 21 before folding (i.e., in an unfolded state), Figs. 16 and 17 show the child car seat 21 in a folded state, and Fig. 18 shows the child car seat 21 in a fully folded state.

[0103] As shown in FIG. 15, the backrest 220 is locked to the seat portion 210 and is in an unfolded state, the child seat 21 is in a used state, the angle of the backrest 220 to the seat portion 210 is 90 degrees or more, and the backrest 220 and the seat portion 210 cannot move relative to each other, ensuring the safety of the ride.

[0104] 16 to 18, when the backrest 220 is unlocked from the seat 210, the lower end of the backrest 220 moves away from the seat 210, and the backrest 220 slides entirely relative to the seat 210 due to the sliding engagement between the sliding grooves 2130 and the sliding ribs 2230, and may be folded relative to the seat 210. Specifically, the sliding ribs 2230 on both sides of the backrest 220 can slide forward along the corresponding sliding grooves 2130 on both sides of the seat 210, so that the backrest 220 and the seat 210 gradually approach each other (as shown in FIGS. 16 and 17) until the child car seat 21 is fully folded (the state shown in FIG. 18).

[0105] Cooperation between the slide ribs 2230 on both sides of the backrest 220 and the slide grooves 2130 on both sides of the seat 210 allows the backrest 220 to be folded stably when it slides relative to the seat 10, and provides a stable connection when the child car seat is in an unfolded state, thereby preventing the backrest 220 from swinging laterally relative to the seat 210.

[0106] FIG. 19 is a perspective view of the seat portion 210 of the child car seat 1 according to an embodiment of the present disclosure. As shown in FIG. 19, each armrest 2120 on either side of the seat portion 210 may include a front armrest 2120a and a rear armrest 2120b spaced apart from each other. If the child car seat uses a three-point safety belt, the safety belt can pass through the gap between the front armrest 2120a and the rear armrest 2120b to secure and protect a child seated in the child car seat. In addition, in the case of a child car seat that does not use a three-point seat belt, the front armrest 2120a and the rear armrest 2120b may be integrated without any gap.

[0107] 15 to 18, an imaginary vertical plane P2 is defined between the front armrest 2120a and the rear armrest 2120b. The imaginary vertical plane P2 is located in the gap between the front armrest 2120a and the rear armrest 2120b in the front-to-rear direction and is perpendicular to the base 2110. Also, as shown in FIG. 15, the child seat 21 is located in the gap between the front armrest 2120a and the rear armrest 2120b and is perpendicular to the base 2110. As shown in FIG. 15, when the child seat 21 is in the unfolded state, that is, when the backrest 220 is locked with respect to the seat 210, the slide rib 2230 is located in the rear slide groove 2130b of the rear armrest 2120b. That is, the entire backrest 220 is located behind the imaginary vertical plane P2 (i.e., on one side of the rear armrest 2120b), and the angle of the backrest 220 with respect to the seat 210 is 90 degrees or more. On the other hand, when the lock of the backrest 220 relative to the seat 210 is released and the child car seat 1 begins to fold, as shown in Figures 16 and 17, the backrest 220 begins to fold relative to the seat 210 (begins to approach), and the slide rib 2230 slides forward along the rear slide groove 2230 (thereby driving the backrest 220 to move), and after gradually passing through the imaginary vertical plane P2, crosses the gap between the rear armrest 2120b and the front armrest 2120a, and slides into the front slide groove 2130a of the front armrest 2120a (i.e., The angle of the backrest 220 relative to the seat 210 is less than 90 degrees), and the slide rib 2230 continues to move forward along the front armrest 2120a until it is fully positioned in the front slide groove 2130a of the front armrest 2120a, causing the backrest 220 to fold relative to the seat 210, and the child seat 21 is in a folded state (i.e., a fully folded state), with the entire backrest 220 positioned in front of the imaginary vertical plane P2.

[0108] Furthermore, the front ends of the slide grooves 2130 provided in the armrests 2120 on both sides of the seat 210 may be open. In particular, notches may be provided on the front outer periphery of the front slide grooves 2130a. When the child car seat 21 is fully folded (as shown in FIG. 18), the slide ribs 2230 are located in the gaps. At this time, the backrest 220 can be removed from the seat unit 210 by pulling the side wings of the backrest 220 outward. After removing the backrest 220, the seat unit 210 can be used alone as a "no-back booster." Furthermore, when the backrest 220 reaches its unfolded position, the rear side of the rear slide grooves 2130b is closed to prevent the backrest 220 from sliding rearward relative to the seat 210, thereby further improving the reliability of the connection between the backrest 220 and the seat 210 and the safety of using the child car seat.

[0109] 23, the child car seat 21 further includes a storage device 2160 removably attached to the sliding groove 2130 of the seat 210. For example, a storage cup is provided on the front side of the armrest 2120 and removably inserted into the sliding groove 2130 to cover the sliding groove 2130, thereby improving the aesthetic appearance of the child car seat 21 and preventing foreign objects from sliding into the sliding groove 2130, causing the sliding rib 2230 to slide within the sliding groove 2130 and causing uneven sliding. Note that when the seat needs to be folded, the storage device must first be removed.

[0110] The locking structure 2210 for locking and unlocking the backrest 220 and the seat 210 will be described below with reference to Figures 20 to 22e in addition to Figure 19. Figure 20 shows a perspective view of the backrest 220 of the child car seat 21 in an embodiment of the present disclosure, Figures 21a to 21d respectively show views of the child car seat 21 when the locking structure 2210 is in the locked position, and Figures 22a to 22d respectively show views of the child car seat when the locking structure is in the unlocked position.

[0111] 19, 20, 21d and 22d, the locking structure 2210 is disposed on the underside of the backrest 220 and is operated to switch between a locked position and an unlocked position. The locking structure 2210 is in the locked position when it is engaged with an engagement rod 2140 fixed to the seat 210, thereby locking the backrest 220 relative to the seat 210, while the locking structure 2210 is in the unlocked position when it is disengaged from the engagement rod 2140, allowing the backrest 220 to move and fold relative to the seat 210.

[0112] Specifically, as shown in FIG. 21d, the locking structure 2210 includes a locking hook assembly 2211, a connecting rod 2212, and an operating element 2215. Referring to FIG. 14, when the backrest 220 and the seat 210 are assembled and locked together, the operating element 2215 is at least partially exposed to the backrest 220 for easy operation. The locking hook assembly 2211 and the connecting rod 2212 are located within the backrest 220 and covered by a cover plate 2240, which prevents dust and foreign objects from entering and prevents users or children from accidentally reaching into the backrest and getting injured. Meanwhile, when maintenance or servicing is required, the cover plate 2240 can be opened to check whether there are any abnormalities in the internal structure, thereby reducing maintenance and operating costs.

[0113] 20, 21d and 22d, the lock hook assembly 2211 is pivotally connected to a fixed rod 2213 of the backrest 220 and protrudes from the underside of the backrest 220 into the seat 210 through a lock hole 2150 in the upper surface of the seat 210, so that when the lock structure 2210 is in the locked position, the lock hook assembly 2211 engages with an engagement rod 2140 fixed in the seat 210. A connecting rod 2212 is connected between the lock hook assembly 2211 and an operating element 2215, the connecting rod 2212 is fixedly connected to the lock hook assembly 2211 and movably connected to the operating element 2215, so that the lock hook assembly 2211 can be removed from the engagement rod 2140 by operating the operating element 2215.

[0114] 21c to 21e, the lock hook assembly 2211 includes a first lock hook 2211a and a second lock hook 2211b, and one end of each of the first lock hook 2211a and the second lock hook 2211b is connected to the operating element 2215 via a corresponding one of two connecting rods 2212 (i.e., the first connecting rod 2212a corresponding to the first lock hook 2211a and the first connecting rod 2212b corresponding to the second lock hook 2211b). The other end of each of the first lock hook 2211a and the second lock hook 2211b is hook-shaped, and the hook shapes at the other ends face each other. For example, as shown in FIG. 21c, the hook shapes are formed like a pair of pliers, and the middle portions of the first lock hook 2211a and the second lock hook 2211b are each pivotally connected to a fixed rod 2213.

[0115] Furthermore, the two connecting rods 2212 (i.e., the first connecting rod 2212a and the second connecting rod 2212b) are arranged vertically relative to the operating element 2215, i.e., one of the two connecting rods 2212 is arranged at the upper part of the operating element 2215, and the other of the two connecting rods 2212 is arranged at the lower part of the operating element 2215. For example, as shown in FIGS. 21e and 22e, the lower connecting rod 2212a is rotatably connected to the operating element 2215, and the upper connecting rod 2212b is rotatably and slidably connected to the operating element 2215, thereby realizing a connection relationship between the operating element 2215 and the locking hook assembly 2211, and the locking hook assembly 2211 is smoothly driven to switch between a locked position and an unlocked position via the operating element 2215.

[0116] 21d, the locking structure 2210 includes two locking hook assemblies 2211 arranged symmetrically with respect to a central axis M2 of the backrest 220. An operating element 2215 may be arranged on the central axis of the backrest 220, and a connecting rod 2212 may pass through the operating element 2215 and have two ends respectively connected to the two locking hook assemblies 2211 arranged symmetrically in the longitudinal direction, so that the two locking hook assemblies 2211 move synchronously.

[0117] 21c and 22c, the folding mechanism of the present disclosure further includes an elastic restoring element 2214. One end of the elastic restoring element 2214 is fixed to the frame of the backrest 220, and the other end of the elastic restoring element 2214 is fixed to the locking structure 2210 (e.g., the operating element 2215, the locking hook assembly 2211, or the connecting rod 2212), so as to apply a force to position the locking structure 2210 in the locked position, thereby making the lock between the backrest 220 and the seat 210 more stable and reliable. For example, the elastic restoring element 2214 may be a restoring tension spring, one end of which is disposed on one of the locking hooks or the connecting rod of the locking hook assembly, and applies a force to pull the locking hook or the connecting rod to the locked position. Alternatively, the elastic return element 2214 may be a restoring compression spring, one end of which is provided on the operating element 2215 and applies a force to push the operating element back to its initial state (i.e., the state where the locking structure is in the locked position). Hereinafter, an embodiment will be described in which the elastic return element 2214 is disposed on the second locking hook 2211b or the second connecting rod 2212b connected to the second locking hook 2211b.

[0118] To facilitate understanding of the working principle of the present disclosure, the switching process between the locked position and the unlocked position of the locking structure 2210 in the embodiment of the present disclosure will be described in detail with reference to Figures 21a to 21e and 22a to 22e.

[0119] 21a to 21e, Fig. 21a shows a front view of the child car seat 21 when the child car seat 21 is in use and the locking structure 2210 is in the locked position, Fig. 21b shows a cross-sectional view taken along line EE in Fig. 21a, and Fig. 21c shows a cross-sectional view along line EE in Fig. 21a. Fig. 21c shows a partial enlarged view of block F shown in Fig. 21b, Fig. 21d shows a perspective view of the child car seat when the locking structure 2210 is in the locked position, and Fig. 21e shows a partial enlarged view of the locking structure 2210 in Fig. 21d.

[0120] 21d and 21e, the lock structure 2210 includes a lock hook assembly 2211, a connecting rod 2212, and an operating element 2215. The lock hook assembly 2211 includes a first lock hook 2211a and a second lock hook 2211b. The connecting rod 2212 includes a first connecting rod 2212a and a second connecting rod 2212b. The first connecting rod 2212a is connected to the upper end of the first lock hook 2211a. The second connecting rod 2212b is connected to the upper end of the second lock hook 2211b. The lower ends of the first lock hook 2211a and the second lock hook 2211b have hook structures that face each other. The first locking hook 2211a is located in front of the second locking hook 2211b, the first connecting rod 2212a is located below the second connecting rod 2212b, and the first connecting rod 2212a is rotatably connected to the operating element 2215. The second connecting rod 2212b is rotatably and slidably connected to the operating element 2215. For example, as shown in FIG. 21e, the operating element 2215 has a connecting groove 2215a penetrating the operating element 2215 along its width direction and capable of rotating and / or sliding relative to the operating element 2215. The connecting groove 2215a has a length along the longitudinal direction of the operating element 2215, and the second connecting rod 2212b penetrates the connecting groove 2215 and can have a sliding stroke corresponding to the length of the connecting groove 2215a. Furthermore, as shown in FIG. 21c, the locking structure 2210 further includes an elastic restoring element 2214. One end of the elastic restoring element 2214 (e.g., a restoring tension spring) is fixed to the frame of the backrest 220, and the other end of the elastic restoring element 2214 is connected to the second locking hook 2211b or the second connecting rod 2212b. The elastic restoring element 2214 constantly applies a pulling force so that the first locking hook 2211a and the second locking hook 2211b are always engaged with each other.

[0121] 21c, 21d, and 21e, when the locking structure 2210 is in the locked position, the first locking hook 2211a and the second locking hook 2211b are respectively engaged with the engaging rod 2140 fixed to the seat 210 from two sides, and the second connecting rod 2212b is restricted to one end of the sliding stroke of the connecting groove 2215a, for example, the end of the connecting groove 2215a close to the outside of the operating element 2215 as shown in FIG. 21e, thereby locking the backrest 220 to the seat 210. More specifically, as shown in FIG. 21c, the main part of the first locking hook 2211a and the main part of the second locking hook 2211b may be assembled in a mirror-symmetrical "X" shape. In the locked position, the first connecting rod 2212a connected to the upper end of the first locking hook 2211a is horizontally spaced apart from the second connecting rod 2212b connected to the upper end of the second locking hook 2211b. However, the first locking hook 2211a and the second locking hook 2211b may have other shapes, and the present disclosure is not limited thereto.

[0122] 22a to 22e, Fig. 22a shows a front view when the locking structure 2210 is in the unlocked position and the child car seat 21 is not folded, Fig. 22b shows a cross-sectional view along line GG in Fig. 22a, Fig. 22c shows a partial enlarged view of block H shown in Fig. 22b, and Fig. 22d shows a perspective view of the child car seat 1 when the locking structure 2210 is in the unlocked position. Fig. 22c shows a partial enlarged view of block H shown in Fig. 22b, Fig. 22d shows a perspective view of the child car seat 1 when the locking structure 2210 is in the unlocked position, and Fig. 22e shows a partial enlarged view of the locking structure 2210 in Fig. 22d.

[0123] 22c, 22d, and 22e, when the backrest 220 needs to be unlocked and folded relative to the seat 210, the lower end of the operating element 2215 is pressed to rotate the lower end inward and the upper end outward, causing the second connecting rod 2212b to slide in the connecting groove 2215a along the slide stroke (as shown in FIG. 22e) and approach the first connecting rod 2212a (as shown in FIG. 22c), driving the first locking hook 2211a and the second locking hook 2211b (particularly, the lower end of the first locking hook 2211a and the lower end of the second locking hook 2211b) to rotate away from each other and be disengaged from the engaging rod 2140. At this time, the backrest 220 can be folded relative to the seat 210 due to cooperation between the slide groove and the slide rib. It can be understood that the locking structure 2210 may be located on the seat 210 and the engagement rod 2140 may be located on the backrest 220 .

[0124] When the operation (e.g., pressing) of the operating element 2215 is released, the elastic return element 2214, such as a return tension spring shown in Fig. 22c, pulls the second connecting rod 2212b (or the upper end of the second locking hook 2211b), so that the second connecting rod 2212b moves away from the first connecting rod 2212a, and the first locking hook 2211a and the second locking hook 2211b return to their initial positions, for example, with their lower ends approaching each other. That is, when the backrest 220 is no longer movable relative to the seat 210, the first locking hook 2211a and the second locking hook 2211b re-engage with the engagement rod 2140, thereby returning to the locked position as shown in Fig. 21c.

[0125] By combining the sliding grooves and sliding ribs and locking and unlocking the locking structure between the seat and the backrest, the folding mechanism of the child car seat not only enables the backrest to be folded and removed from the seat, but also achieves stable connections in both the horizontal and vertical directions, improving safety and reliability of use. Furthermore, the folding mechanism has a simple structure and is easy to operate, and the child car seat can be folded when not in use, reducing space consumption and transportation costs.

[0126] The child car seat and its folding mechanism of the present invention have the following beneficial technical effects.

[0127] The folding mechanism has a simple structure that is easy to operate and convenient to disassemble and assemble. The folding of the backrest relative to the seat is achieved by a sliding engagement between the seat and the backrest, which reduces the volume of the folded child car seat and the overall packaging size, thereby reducing the amount of space taken up in the vehicle and reducing transportation costs. It also eliminates the need for users to repeatedly disassemble and transport the entire child car seat to free up space, improving usability.

[0128] Furthermore, in the child car seat of the present disclosure, the slide ribs on both sides of the back inclination portion (or seat) cooperate with the slide grooves on both sides of the seat (or back inclination portion) to more stably connect the backrest and seat, thereby suppressing lateral (i.e., left-right) shaking. Furthermore, by engaging the lock hook with an engaging rod fixed to the seat, the strength of the connection between the backrest and seat can be increased, providing good strength when the child car seat is used forward or backward and improving the stability of the child car seat in the fore-and-aft direction, thereby further ensuring safety in use.

[0129] Furthermore, a third aspect of the present disclosure provides a sheet.

[0130] 24 and 25, perspective and side views, respectively, of a sheet 31 in an embodiment of the present disclosure are shown schematically.

[0131] Referring to FIG. 24 , the seat 31 of this embodiment includes a backrest 310, a seat 320, and a storage device 330. The backrest 310 is detachably attached to the seat 320. When the seat 31 is in use, the backrest 310 may be provided substantially perpendicular to the seat 320, or the angle of the backrest 310 relative to the seat 320 may be adjusted within a certain range. When the seat 31 is not in use, the backrest 310 can be folded (not shown) relative to the seat 320 to reduce the overall volume of the seat and facilitate storage. The seat 31 may further include a base 340 disposed below the seat 320 and configured to support the entire seat 31 and place it in a vehicle seat. Optionally, the seat 31 of this embodiment is a child car seat.

[0132] As shown in FIG. 24 , an armrest 3220 is provided on each side of the seat 320. For example, the seat 320 includes a seat main body 3230 and a housing 3210. The housing 3210 includes two side covers 3211 and a bottom cover 3212. Each of the two side covers 3211 is fixedly connected to the outside of a corresponding one of the upright portions on the left and right sides of the seat main body 3230, and forms the armrest 3220 together with the corresponding upright portion. The bottom cover 3212 is fixedly connected between the base 340 and the seat 320. More specifically, as shown in FIG. 24 , the bottom cover 3212 is fixedly connected to the seat main body 3230 and the left and right side covers 3211, respectively, to form the outer appearance of the seat 320.

[0133] Furthermore, at least one armrest 3220 of the seat 320 is provided with a storage device 330. The storage device 330 may be connected to the seat 31 such as the seat 320 so as to be slidable in the front-to-rear direction (i.e., forward and backward). For example, as shown in FIG. 24 , the storage device 330 may be attached to the armrest 3220 of the seat 320 in a direction from the front toward the backrest 310, or may be detached from the armrest 3220 in a direction away from the backrest 310. More specifically, the storage device 330 may slide along the upper edge of the armrest 3220. In one embodiment, a detachable storage device 330 is provided in each of the two armrests 3220. For example, the storage device 330 may be a storage cup. A specific structure of the storage device 330 will be described later in combination with FIG. 26 .

[0134] Referring to FIG. 25, when the storage device 330 is attached to the armrest 3220 of the seat portion 320, the storage device 330 may abut against the abutment surface 32201 on the front side of the armrest 3220 to prevent the storage device 330 from continuing to slide rearward (i.e., in the direction toward the backrest 310).

[0135] 26 and 27, Fig. 26 schematically shows a perspective view of a storage device 330 in an embodiment of the present disclosure, and Fig. 27 schematically shows a perspective view of a seat section 320 in an embodiment of the present disclosure, in which an armrest 3220 on one side of the seat section 320 is provided with a storage device 330, and the armrest 3220 on the other side of the seat section 320 does not include a storage device 330 in order to explain the internal structure at the connection between the seat section 320 and the storage device 330. Note that although an embodiment in which the storage device 330 is disposed in the seat 320 is shown, the present disclosure is not limited thereto, i.e., the storage device 330 may be disposed in other positions on the seat.

[0136] As shown in FIGS. 26 and 27 , the storage device 330 includes a connection portion 3310 and a storage structure 3330. The storage device 330 may be slidably connected to the seat 31 via the connection portion 3310. For example, the storage device 330 may be slidably connected to the seat 320 so that the storage device 330 can be easily attached and detached by sliding it relative to an armrest 3220 of the seat 320. The storage structure 3330 is fixed to the connection portion 3310 to store objects. In one embodiment, the storage structure 3330 may be disposed offset from one end of the connection portion 3310. For example, referring to FIG. 27 , when the storage device 330 is installed in the armrest 3220 of the seat 320, the storage structure 3330 may be disposed outward of the front end of the connection portion 3310 (outward relative to the seat 320).

[0137] Further, as shown in FIG. 26 , the connection portion 3310 includes a first sliding portion 3311. Correspondingly, as shown in FIG. 27 , the seat 31 (only the seat 320 of the seat 31 is shown; for other parts of the seat 31, see FIG. 24 ) is also provided with a connecting structure 3221. In one embodiment, the first sliding portion 3311 extends from one end of the connecting portion 3310 and is located below the connecting portion 3310 to slidably cooperate with the connecting structure 3221. For example, the connecting structure 3221 may be provided on the seat 320 (such as its armrest 3220) or on any side of the backrest (not shown). The connecting portion 3310 of the storage device 330 slides back and forth along the connecting structure 3221 of the seat 31 and can be positioned at at least one position on the connecting structure 3221.

[0138] More specifically, the connecting structure 3221 includes a second sliding portion 32211 and a positioning hole 32212 (the positioning hole 32212 will be further described below in combination with FIGS. 31 and 32). The first sliding portion 3311 slidably cooperates with a corresponding second sliding portion 32211 provided on the connecting structure 3221. In one embodiment, the second sliding portion 32211 is provided on an upper surface of the armrest 3220 on at least one side of the seat 320. More specifically, as shown in FIG. 27, the second sliding portion 32211 may be formed between an upright portion on either side of the seat main body 3230 and a corresponding side cover 3211. In one embodiment, the first slide portion 3311 may be a slide rib having an inverted T-shaped structure (see FIG. 26), and the second slide portion 32211 may be a slide groove that is complementary to the shape of the slide rib (see FIG. 27), but the present disclosure is not limited thereto, and the first slide portion and the second slide portion may have other shapes that slide and fit together.

[0139] Additionally, in one embodiment, a structure that slidably cooperates with the second sliding portion 32211 may be provided below the backrest of the seat (see Figure 24) so ​​as to be slidable along the second sliding portion 32211, thereby enabling the angle adjustment and folding of the backrest relative to the seat.

[0140] 28 and 29 show a process of attaching storage devices 330 to seat 320. Specifically, Fig. 28 is a perspective view of seat portion 320 in an embodiment of the present disclosure, and schematically shows a state in which a storage device provided on one side of seat portion 320 is attached and a storage device provided on the other side of seat portion 320 is attached, and Fig. 29 is a perspective view of seat portion 320 in an embodiment of the present disclosure, and schematically shows a state in which storage devices 330 on both sides of seat portion 320 are attached.

[0141] As shown in Figures 28 and 29, the connection part 3310 of the storage device 330 can be attached to either the left or right side of the seat 320 from the front end of the seat 320 along the second slide part 32211 provided on the armrest part 3220.

[0142] The cooperation of the first sliding portion 3311 of the connecting portion 3310 and the second sliding portion 32211 of the armrest 3220 allows the storage device 330 to be installed on the seat portion 320 from the front of the seat portion 320, thereby simultaneously restricting the movement of the storage device 330 in the left-right and up-down directions of the seat portion 320. This prevents the storage device 330 from tilting or tipping over when a child moves from one side of the seat 320 to the seat 320 and accidentally hits the storage device 330 from the side, or when a child sitting on the seat 320 accidentally kicks the storage device 330 from below or the side, thereby ensuring the stability of the storage device 330 and the items stored therein and preventing items from spilling out of the storage device 330.

[0143] 30 is a top view of the seat 320 of FIG. 29 and the storage device 330 provided thereon. As shown in FIG. 30, when the storage device 330 is installed on the armrest 3220 of the seat unit 320, the storage structure 3330 of the storage device 330 is offset outward relative to the seat unit 320 at the front end of the entire seat unit 320, which can further reduce the possibility that the feet or legs of a child sitting on the seat unit 320 will accidentally hit the storage structure 3330.

[0144] 31 and 32, FIG. 31 is a cross-sectional view of the seat portion 320 taken along line JJ in FIG. 30, and FIG. 32 is an enlarged view of portion Q shown in FIG.

[0145] 31 and 32 , the storage device 330 further includes a positioning element 3320, which is provided on the connection portion 3310. The storage device 330 can be positioned at different positions on the connection structure (only the positioning holes 32212 of the connection structure are shown in FIG. 32 ; the connection structure will be described in detail later) via the positioning element 3320. In one embodiment, the positioning element 3320 is rotatably connected to the connection portion 3310 of the storage device 330, and has an engagement position (shown in FIG. 31 ) in which it engages with the connection structure 3221, and a disengagement position (not shown) in which it is removed from the connection structure 3221. Specifically, when the storage device 330 is installed on the seat portion 320, the positioning element 3320 is disposed between the connection portion 3310 of the storage device 330 and the seat portion 320 to prevent sliding between the storage device 330 and the seat portion 320 and to position the connection portion 3310 on the seat portion 320. For example, one end of the positioning element 3320 may be pivotally connected to the connecting portion 3310 via a pin 2324, for example, at a pivot point P3 as shown in Figure 32. When combined with Figures 31 and 32, it can be seen that the one end of the positioning element 3320 pivotally connected to the connecting portion 3310 (i.e., the end closer to the pivot point P3) is farther from the receiving structure 3330 of the storage device 330 than the other end of the positioning element 3320.

[0146] In one embodiment, the positioning element 3320 further includes a resilient arm 3321. The resilient arm 3321 has an arm-like structure extending from one end of the positioning element 3320 toward the other end of the positioning element 3320. Specifically, as shown in FIGS. 31 and 32 , the arm-like structure of the resilient arm 3321 extends from a first end 3320a of the positioning element 3320 (i.e., the end closer to the pivot point P3) toward a second end 3320b of the positioning element 3320 (i.e., the end farther from the pivot point P3), and the arm-like structure is spaced apart from the second end 3320b. Furthermore, the end 2321a of the elastic arm 3321 abuts against the inner surface of the connecting portion 3310, biasing the main portion of the positioning element 3320 toward the seat 320 below it and positioning the connecting portion 3310 when it slides into position on the seat (e.g., seat 320 as shown in FIG. 31).

[0147] In one embodiment, the positioning element 3320 further includes a positioning protrusion 3322. The positioning protrusion 3322 is arranged under the other end of the positioning element 3320 to engage with the seat, so that the connecting portion 3310 is positioned on the seat. More specifically, as shown in FIGS. 31 and 32, the connecting portion 3310 can be positioned on the seat 320, such as the armrest 3220, via the positioning protrusion 3322. Correspondingly, at least one positioning hole 32212 for engaging with the positioning protrusion 3322 is provided in the second sliding portion 32211 of the seat (combined with FIG. 27). Regarding the arrangement of the positioning hole 32212, a perspective view of the armrest 3220 and the second sliding portion 32211 thereon is shown in FIG. 27, which illustrates the positional relationship between the second sliding portion 32211 and the positioning hole 32212. For example, the positioning hole 32212 may be provided as an opening extending from one side of the second sliding portion 32211. Furthermore, the positioning hole 32212 may be provided as one positioning hole or as multiple positioning holes, so that the storage device 330 can be positioned at multiple positions on the armrest 3220 of the seat 320 by selective engagement between the positioning protrusion 3322 of the positioning element 3320 and the positioning hole 32212. When the seat is used by a smaller child, the storage device 330 may be adjusted to a rearward position (i.e., a position closer to the seat backrest) so that the smaller child can easily access items in the storage device 330. When the seat is used by a larger child, the storage device 330 may be adjusted to a forward position (i.e., a position away from the seat backrest) so that the larger child can conveniently access objects in the storage device 330 and so as not to restrict the movement space of the child's arms.

[0148] By providing the positioning element 3320 with the elastic arm 3321 and the positioning protrusion 3322 at the connecting portion 3310, the elastic arm 3321 of the positioning element 3320 constantly applies a force biasing the positioning protrusion 3322 toward the seat, so that when the storage device 330 slides to an appropriate position relative to the seat, the positioning protrusion 3322 engages with the corresponding positioning hole 32212 of the connecting structure 3221 under the bias of the elastic arm 3321, and the storage device 330 is positioned at this position. In this way, the storage device 330 can be positioned in different usage positions as desired, further improving convenience and usability.

[0149] 33 and 34, Fig. 33 is a perspective view of the sheet 320 of Fig. 29 from another angle, and Fig. 34 is an enlarged view of portion J shown in Fig. 33. Fig. 33 shows the positioning element 3320 provided on the connection portion 3310 from another side, from which at least a portion of the positioning element 3320 is visible (i.e., unobstructed).

[0150] As shown in FIGS. 33 and 34 , in one embodiment, the positioning element 3320 further includes an operating portion 3323. In one embodiment, the operating portion 3323 is located on the upper side of the other end (e.g., the second end 3320b) of the positioning element 3320 and is at least partially exposed. For example, an opening may be provided in a side of the armrest 3220 near the child's seating position, making the operating portion 3323 visible from the outside and allowing a user to contact or grip the operating portion 3323 for manual operation. By operating the operating portion 3323, the positioning element 3320 is released from the seat, allowing the storage device 330 to slide to another position relative to the seat. For example, in one embodiment, the operating portion 3323 may be pulled upward to overcome the elastic rotation of the elastic arm 3321 (i.e., overcome the biasing force applied to the positioning protrusion 3322 by the elastic rotation), thereby disengaging the positioning protrusion 3322 from the positioning hole 32212 provided in the seat 320. At this time, by continuing to pull the storage device 330 in the axial direction, the connection part 3310 (such as the first sliding part described above) of the storage device 330 slides on the armrest 3220 (such as the second sliding part described above) of the seat 320, allowing the storage device 330 to be detached from the seat 320 or adjusted to another position and engaged with another positioning hole, thereby making it suitable for children of different physiques and further improving operational convenience.

[0151] The storage device according to the present disclosure can be slid forward and backward to be detachably attached to the seat by connecting the connecting portion to the seat, thereby restricting movement of the storage device in the left-right direction and the up-down direction of the seat. In the event that a child on the seat accidentally kicks the storage device from below or accidentally hits the storage device sideways while moving from one side of the seat to the seat portion, the storage device according to the present disclosure can ensure the stability of the storage device and items placed thereon, thereby improving the safety and comfort of using the seat. Furthermore, the storage device and seat according to the present disclosure have a simple structure, are easy to assemble and disassemble, and can be removed from the seat when not needed, reducing the packaging volume of the seat and reducing transportation costs.

[0152] Although relative terms such as "above" and "below" are used herein to describe the relationship of one component to another, it should be understood that such terms are used herein for convenience only, and that if, for example, the device being referenced were turned upside down in the illustrated orientation, the component described as "above" would also become the component described as "below." When a structure is described as "above" another structure, it may mean that the structure is integrally formed on the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via an additional structure.

[0153] The terms "a," "one," "the," "the above," and "at least one" are used to indicate the presence of one or more elements / components / etc. The terms "including," "comprising," and "having" are intended to be inclusive and mean that there may be additional elements / components / etc. other than the listed elements / components / etc. Furthermore, "first," "second," and "second" are used merely as symbols and do not numerically limit objects.

[0154] Unless otherwise defined, all terms, including technical and scientific terms, used herein have the same meaning as commonly understood by a person of ordinary skill in the art to which this disclosure belongs. It should also be understood that terms should be interpreted as having a meaning consistent with the meaning in the context of the relevant technology, and should not be interpreted as an idealized or overly formal meaning unless explicitly defined herein.

[0155] It should be understood that application of the present disclosure is not limited to the detailed construction and arrangement of components provided herein. The present disclosure is capable of other embodiments and of being practiced and carried out in various ways. Such variations and modifications are within the scope of the present disclosure. [Explanation of symbols]

[0156] 110 sheets 120 Seat Assembly 121 Base 1211 curved top surface 1212 Positioning guide rail 12121 Positioning hole 12122 Engagement hole 1214 Evasion Slot 122 seat body 1220 Guide Slot 1221 Sheet body 12211 Upper case 12212 Lower Case 1221h Installation port 12213 First contact part 12214 First guide groove 12215 Second guide groove 12216 Storage groove 1222 Armrest 12221 First curved slide slot 12222 Second curved slide slot 12223 Aperture 123 Adjustment Assembly 1231 Positioning Elements 12311 Positioning rod 12312 Connection Elements 12313 Link Elements 12314 Receiving groove 1232 first elastic element 1233 Adjustment Factor 124 moving elements 1241 Rotating Rod 12411 First End 12412 Second End 1242 Second Elastic Element 1243 Rotation axis 125 Object Placement Elements 129 Engagement rod 130 Backrest 131 Slope 132 Side slope 1321 Slide part 136 Contact element 1361 Opening slot 140, 140' locking element 141 Operational Elements 1411 Operation opening 142 First Fixed Axis 143 Engagement hook 1431 Hook part 145 Second Fixed Axis 147 Elastic Restoration Element 21 Child Seat 210 Seat section 2110 Base 2120 Armrest 2120a Front armrest 2120b rear armrest 2130 Slide groove 2130a Front slide groove 2130b Rear slide groove 2140 Engagement rod 2150 Lock hole 2160 Storage Device 220 Backrest 2210 Locking Structure 2211 Lock Hook Assembly 2211a First Locking Hook 2211b Second Locking Hook 2212 Connecting Rod 2212a First connecting rod 2212b Second connecting rod 2213 Fixed rod 2214 Elastic Restoration Element 2215 Operational Elements 2215a Connecting groove 2230 Slide rib 2240 Cover Plate 230 Headrest P2 Virtual vertical plane M2 center axis 31 seats 310 Backrest 320 Seat section 3210 Housing 3211 Side cover 3212 Bottom cover 3220 Armrest 3221 Connection structure 32211 Second slide 32212 Positioning hole 32201 Contact surface 3230 Seat body 330 Storage Device 3310 Connection 3311 First slide 3320 Positioning element 3320a First end 3320b Second End 3321 Elastic Arm 3322 Positioning protrusion 3323 Operation unit 3324 pins P3 Pivot Point 3330 Containment Structure 340 base

Claims

1. 1. A seat assembly removably connected to a backrest of a child car seat, comprising: The seat assembly includes a base, a seat body, and a movable element; The seat body is slidably connected to the base, and the seat body can be positioned at different positions relative to the base; The movable element is located between the backrest and the seat body, and when the backrest is removed from the seat body, the movable element is disengaged from the backrest and locked with the base, thereby locking the seat body from moving relative to the base. A seat assembly characterized by:

2. An engagement hole is formed in the base, and when the backrest is removed from the seat body, the movable element is disengaged from the backrest and engaged with the engagement hole.

2. The seat assembly of claim 1.

3. an engagement hole is formed in the base, the movable element includes a rotation rod slidably connected to the seat body and an elastic element connected to the rotation rod, the rotation rod including a first end and a second end; When the backrest is not released, the second end of the rotating rod is pushed by the backrest, and the first end is positioned outside the engagement hole facing the engagement hole, and the elastic element is configured to apply a force that moves the first end of the rotating rod toward the engagement hole.

3. A seat assembly according to claim 1 or 2.

4. The backrest includes an abutment element, and when the backrest is not removed, the abutment element abuts against the second end of the rotation rod.

4. The seat assembly of claim 3.

5. When the seat body slides to a predetermined position relative to the base, the backrest is in a vertical position.

5. The seat assembly according to claim 1, wherein the seat assembly is a seat.

6. The seat assembly includes an adjustment assembly between the base and the seat body, the base including a positioning guide rail, the positioning guide rail having a plurality of positioning holes spaced apart from one another, the seat body being slidably mounted on the base and cooperating with each of the positioning holes via the adjustment assembly.

6. The seat assembly according to claim 1, wherein the seat assembly is a seat.

7. The seat body includes a guide slot for receiving the positioning guide rail, the length of the guide slot being greater than the length of the positioning guide rail, and the seat body includes a first abutment portion, which is disposed on a side of the guide slot away from the backrest and abuts against the positioning guide rail when the seat body slides into position.

7. The seat assembly of claim 6.

8. the seat body includes a seat body, and the seat body includes an upper case and a lower case connected to each other; the adjustment assembly includes a positioning element connected between the upper case and the lower case, a resilient element connected to the positioning element, and an adjustment element connected to the positioning element; The positioning element is selectively disposed in one of the positioning holes, and the adjustment element is movably connected to the lower case.

8. A seat assembly according to claim 6 or 7.

9. the positioning element includes a positioning rod, a connecting element connected to the positioning rod, and a link element connected between the adjustment element and the connecting element; A first guide groove is formed in the lower case, the extending direction of the first guide groove is parallel to the axial direction of the positioning hole, the connecting element is movably disposed in the first guide groove, a receiving groove is formed in the connecting element, and the elastic element is disposed in the receiving groove and abuts against the connecting element.

9. The seat assembly of claim 8.

10. The seat body includes armrests on both sides of the seat body, and connection holes corresponding to the first guide grooves are formed inside the armrests, and the positioning elements are disposed in the connection holes through the positioning holes.

10. The seat assembly of claim 9.

11. the backrest includes a locking element; When the seat body does not slide into position relative to the base, the locking element cannot be unlocked; When the seat body slides into the predetermined position relative to the base, the locking element can be unlocked. A seat assembly according to any one of claims 1 to 10.

12. The rear edge of the base is formed with an escape slot facing the backrest, and when the seat body is slid into position, the locking element faces the escape slot to allow the backrest to be removed.

12. The seat assembly of claim 11.

13. An avoidance slot is formed at the rear edge of the base facing the backrest; When the seat body is slid into position, the locking element is unlocked via the avoidance slot; When the seat body does not slide into the predetermined position, the locking element cannot be unlocked through the avoidance slot.

13. A seat assembly according to claim 11 or 12.

14. The locking element includes an engagement hook and an operating element rotatably provided on the backrest, and the seat assembly further includes an engagement rod fixed to the seat body, the engagement hook being fixedly connected to the operating element, the engagement hook having a hook portion facing the engagement rod and hooking onto the engagement rod, the engagement hook sliding relative to the base together with the seat body, and when the seat body slides to the predetermined position, the hook portion faces the avoidance slot.

14. A seat assembly according to claim 12 or 13.

15. The seat body includes a seat body, and an accommodating groove for receiving the locking element is formed in the seat body, and the locking element is fixed to a lower end of the backrest. A seat assembly according to any one of claims 6 to 14.

16. The seat body includes an armrest, and an upper portion of the armrest is formed with a first curved slide slot and a second curved slide slot that are interlocked with each other. The backrest includes an inclined portion and side inclined portions located on both sides of the inclined portion. A slide portion protrudes from a bottom portion of each side inclined portion. The slide portion is slidably disposed in the first curved slide slot, and the cross sections of the first curved slide slot and the second curved slide slot match with the cross section of the slide portion.

16. A seat assembly according to any one of claims 1 to 15.

17. A folding mechanism for folding a backrest of a child car seat relative to a seat portion, comprising: the folding mechanism includes a slide groove, a slide rib, and a locking structure; the slide groove is disposed in one of the seat portion and the backrest, the slide rib is disposed on the other of the seat portion and the backrest, The locking structure is operated to switch between a locked position and an unlocked position, and when the locking structure is in the locked position, the backrest is fixed to the seat portion and is in an unfolded state, and when the locking structure is in the unlocked position, the backrest is foldable relative to the seat portion by sliding engagement between the slide groove and the slide rib and is in a folded state. A folding mechanism characterized by:

18. The slide grooves are disposed on both sides of the seat portion, and the slide ribs are disposed on both sides of the backrest.

18. The folding mechanism of claim 17.

19. The slide grooves are arranged on the upper surface of the armrest on both sides of the seat portion.

20. The folding mechanism of claim 18.

20. The slide ribs are disposed on the bottom surfaces of the two side wings of the backrest, and correspond to the slide grooves.

20. The folding mechanism of claim 19.

21. The armrests on both sides of the seat portion include a front armrest and a rear armrest arranged at a distance from each other, In the deployed state, the slide rib is in the rear slide groove of the rear armrest, In the folded state, the slide rib is in the front slide groove of the front armrest.

21. A folding mechanism according to claim 19 or 20.

22. The slide rib and the slide groove have a complementary T-shaped structure, and the cross section of the slide groove is an inverted T-shaped. A folding mechanism according to any one of claims 17 to 21.

23. the locking structure is disposed on the underside of the backrest; The folding mechanism further includes an engagement rod fixed to the child car seat, and the locking structure is in the locked position by engaging with the engagement rod and in the unlocked position by disengaging from the engagement rod. A folding mechanism according to any one of claims 17 to 22.

24. the locking structure includes an operating element and a locking hook assembly; the operating element is at least partially exposed and disposed on the backrest; the locking hook assembly is pivotally connected to the backrest, and when the locking structure is in the locked position, the locking hook assembly engages with the engagement rod; The locking hook assembly is disengaged from the engagement rod by operating the operating element.

24. The folding mechanism of claim 23.

25. The locking hook assembly is rotatably connected to a fixed rod of the backrest and protrudes from the underside of the backrest.

25. The folding mechanism of claim 24.

26. The locking structure further includes a connecting rod; The connecting rod is connected between the locking hook assembly and the operating element, and the connecting rod is fixedly connected to the locking hook assembly and movably connected to the operating element.

26. A folding mechanism according to claim 24 or 25.

27. the locking hook assembly includes a first locking hook and a second locking hook; one end of each of the first locking hook and the second locking hook is connected to the operating element via a corresponding one of two connecting rods; The other ends of the first lock hook and the second lock hook are hook-shaped and face each other, The central portions of the first locking hook and the second locking hook are rotatably connected to the fixed rod of the backrest, respectively.

27. The folding mechanism of claim 26.

28. one of the two connecting rods is arranged at an upper part of the operating element, and the other of the two connecting rods is arranged at a lower part of the operating element; The connecting rod is rotatably connected to the operating element at the lower part, and the connecting rod is rotatably and slidably connected to the operating element at the upper part.

28. The folding mechanism of claim 27.

29. The locking structure includes two locking hook assemblies, and the two locking hook assemblies are arranged symmetrically with respect to the central axis of the backrest. A folding mechanism according to any one of claims 24 to 28.

30. The folding mechanism further includes an elastic restoring element having one end fixed to the frame of the seat back and the other end fixed to the locking structure, the elastic restoring element applying a force to position the locking structure in the locked position. A folding mechanism according to any one of claims 24 to 29.

31. The other end of the elastic resilient element is fixed to the operating element, the locking hook assembly, or the connecting rod.

31. The folding mechanism of claim 30.

32. The backrest is detachable from the seat portion in the folded state. A folding mechanism according to any one of claims 17 to 31.

33. A storage device that is detachably attached to a child car seat, The storage device includes a connection portion and a storage structure; the connecting portion is connected to the child seat so as to be slidable in the front-rear direction, The receiving structure is secured to the connecting portion for receiving an object. A storage device characterized by:

34. The connecting portion is slidable in the front-rear direction along the connecting structure of the child car seat and is positioned at at least one position of the connecting structure.

34. The storage device of claim 33.

35. the connecting portion includes a first sliding portion; The first slide portion extends from one end of the connecting portion and is located below the connecting portion, and slidably cooperates with a corresponding second slide portion provided on the connecting structure.

35. The storage device of claim 34.

36. The first slide portion is a slide rib having an inverted T-shape, and the second slide portion is a slide groove having a shape complementary to the slide rib.

36. The storage device of claim 35.

37. The storage device further includes a positioning element; the positioning element is disposed on the connection portion of the storage device; The storage device is positioned at different positions on the connection structure via the positioning element.

37. The storage device according to any one of claims 34 to 36.

38. The storage device further includes a positioning element; the positioning element is disposed on the connection portion of the storage device; The positioning element is rotatably connected to the connection portion and has an engagement position in which the connection structure is engaged and a disengagement position in which the connection structure is disengaged.

38. The storage device according to any one of claims 34 to 37.

39. One end of the positioning element is rotatably connected to the connection portion, and the positioning element includes a positioning protrusion; The positioning protrusion is disposed under the other end of the positioning element to engage with the child car seat, thereby positioning the connection part on the child car seat.

39. A storage device according to claim 37 or 38.

40. the positioning element further includes a resilient arm; The elastic arm has an arm-like structure extending from one end of the positioning element toward the other end of the positioning element, and a tail end of the elastic arm abuts against the connecting portion to always provide a force that urges the positioning protrusion toward the child seat.

40. The storage device of claim 39.

41. The positioning element further includes an operating portion, and the operating portion is pulled to overcome the elastic rotation of the elastic arm, thereby disengaging the positioning protrusion from the child car seat.

41. The storage device of claim 40.

42. the positioning element further includes an operating portion; The operating portion is operated to move the positioning element between the engaged position and the disengaged position.

42. The storage device according to any one of claims 38 to 41.

43. The storage device is disposed in the seat portion of the child car seat.

43. The storage device according to any one of claims 33 to 42.

44. The second sliding portion of the child car seat is provided on an upper surface of an armrest on at least one side of the seat portion.

44. The storage device of claim 43.

45. The second sliding portion of the child car seat further includes at least one positioning hole that engages with the positioning protrusion.

45. A storage device according to claim 43 or 44.

46. The child car seat further includes a base, side covers, and a bottom cover, the side covers being fixedly connected to both sides of the seat, and the bottom cover being fixedly connected between the base and the seat portion.

46. ​​The storage device according to any one of claims 43 to 45.

47. The child car seat further includes a backrest, The backrest is slidably connected to the seat portion along the second sliding portion of the child car seat, and the backrest is folded or unfolded relative to the seat portion.

48. The storage device according to any one of claims 43 to 47.

48. A child car seat, The seat assembly according to any one of claims 1 to 16, and / or The folding mechanism according to any one of claims 17 to 32, which allows the backrest of the child car seat to be folded or selectively separated from the seat proper; and / or The storage device according to any one of claims 33 to 47 is provided. A child seat characterized by the above.

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