Child seat mechanism and carrier

Abstract

The utility model discloses a child seat mechanism and a carrier. The child seating mechanism includes a seat, a backrest, and a leg support defining first to third planes, respectively, for supporting thighs, back, and shanks of an occupant. One use state of the child seat mechanism is a zero-gravity state, the front portion of the seat is higher than the rear portion of the seat in the state, a first included angle larger than zero is formed between the first plane and the horizontal plane, and a second included angle larger than zero and smaller than 90 degrees is formed between the second plane and the horizontal plane. The third plane has a third angle greater than zero and less than 90 degrees with respect to the horizontal plane such that the heart and knees of the occupant are at the same height. The child seat mechanism further comprises an angle adjusting device, and the angle adjusting device drives the leg supporting piece to rotate when the backrest rotates so that the child seat mechanism can be switched among a plurality of use states. The angle of the leg supporting piece can be adjusted by rotating the backrest, so that the zero-gravity state can be switched, the conversion is convenient, and excellent comfort is achieved in the zero-gravity state.

Description

TECHNICAL FIELD

[0001] The present utility model relates to a child seat mechanism and a carrier, such as a child stroller. BACKGROUND

[0002] A child seat mechanism is one of the indispensable components of a child carrier such as a child stroller or a car safety seat. A common seat mechanism includes a seat and a backrest. The seat is used to support the buttocks and thighs of a child, and the backrest is used to support the back of the child. In order to improve the comfort of use, some seat mechanisms can adjust the angle between the seat and the backrest; thus, the seat mechanism can be converted in posture, such as being able to be converted between a sitting posture, a semi-laying posture, and a lying posture. Some seat mechanisms are also provided with a leg support foot (such as a footrest or a leg rod) to support the lower leg of the occupant. In each use state, the angle between the backrest and the seat is different to allow the occupant to use the seat mechanism in a sitting posture, a semi-laying posture, or a lying posture. If the angle of the leg support member can also be adjusted accordingly and automatically converted to a comfortable angle suitable for the semi-laying state along with the backrest, the comfort and convenience of state conversion of the seat mechanism in the semi-laying state will be greatly improved.

[0003] The above information disclosed in the background section is only intended to enhance the understanding of the background of the present application, and therefore it can include information that does not constitute the prior art known to those of ordinary skill in the art. SUMMARY

[0004] The present utility model relates to a child seat mechanism and a carrier. The angle of the leg support member can be adjusted by rotating the backrest, so that the zero-gravity state can be switched, which is convenient to convert and has excellent comfort in the zero-gravity state.

[0005] The present utility model adopts the following technical solutions:

[0006] A child seat mechanism includes a seat, a backrest capable of rotating relative to the seat, and a leg support member capable of rotating relative to the seat. The seat defines a first plane for supporting the thighs of an occupant. The backrest defines a second plane for supporting the back of the occupant. The leg support member defines a third plane for supporting the lower leg of the occupant.

[0007] The child seat mechanism includes multiple use states, one of which is a zero-gravity state. In the zero-gravity state, the front of the seat is higher than the back, the first plane has a first included angle greater than zero relative to the horizontal plane, the second plane has a second included angle greater than zero and less than 90 degrees relative to the horizontal plane, and the third plane has a third included angle greater than zero and less than 90 degrees relative to the horizontal plane, so that the heart and knees of the occupant are at the same height.

[0008] The child seat mechanism further comprises an angle adjusting device, a front end of the angle adjusting device is rotatably connected to the leg support, and a rear end of the angle adjusting device is rotatably connected to the backrest, so that the leg support is driven to rotate when the backrest rotates, and the child seat mechanism is switched between multiple use states.

[0009] In a preferred embodiment, the first included angle is 18-40 degrees, the second included angle is 35-55 degrees, and the third included angle is 26-40 degrees.

[0010] In a more preferred embodiment, the first included angle is 25-35 degrees, the second included angle is 40-50 degrees, and the third included angle is 28-35 degrees.

[0011] In a preferred embodiment, the multiple use states further include a sitting state and a lying state, in the sitting state and the lying state, the first plane has an included angle with the horizontal plane that is less than the first included angle; during the transition from the sitting state to the lying state via the zero-gravity state, the second plane has an included angle with the horizontal plane that gradually decreases, and the third plane has an included angle with the horizontal plane that gradually decreases.

[0012] In a preferred embodiment, the child seat mechanism comprises a connecting seat, a rear part of the seat is rotatably connected to the connecting seat; the angle adjusting device comprises:

[0013] a backrest driving rod, the backrest is rotatably connected to the connecting seat via the backrest driving rod;

[0014] a first driving rod having a first end rotatably connected to the backrest driving rod;

[0015] a second driving rod having a first end rotatably connected to the connecting seat;

[0016] a third driving rod having a first end rotatably connected to the seat;

[0017] a fourth driving rod having a first end rotatably connected to the second driving rod or the third driving rod, and a second end rotatably connected to the leg support;

[0018] wherein a second end of the first driving rod, a second end of the second driving rod, and a second end of the third driving rod are rotatably connected.

[0019] More preferably, the second end of the fourth driving rod is rotatably and slidably connected to the leg support, so that the lower end of the leg support and the backrest can be moved towards each other after the child seat mechanism is folded;

[0020] the backrest driving rod comprises:

[0021] an upper driving rod fixedly connected to a lower end of the backrest or integrated with the backrest, the upper driving rod being rotatably connected to the connecting seat;

[0022] a lower driving rod having a first end rotatably connected to the connecting seat and / or the upper driving rod and a second end rotatably connected to a first end of the first driving rod;

[0023] The child seat mechanism further comprises a locking member, the backrest rod locking member having a locking state and an unlocking state, in the locking state the backrest rod locking member connects the upper driving rod and the lower driving rod, in the unlocking state the backrest rod locking member is disengaged from the upper driving rod and / or the lower driving rod to allow the upper driving rod to be flipped relative to the lower driving rod, so as to fold or unfold the child seat mechanism.

[0024] In a preferred embodiment, the child seat mechanism comprises a base, the backrest is connected with a backrest connecting rod, the backrest connecting rod is rotatably connected to the base;

[0025] The angle adjusting device comprises:

[0026] a first push rod having a first end rotatably connected to the backrest connecting rod;

[0027] a second push rod having a first end rotatably connected to a second end of the first push rod;

[0028] a third push rod having a first end rotatably connected to a second end of the second push rod;

[0029] wherein the second end of the third push rod is rotatably connected to the leg support;

[0030] The second push rod is slidably arranged on the seat in the front-rear direction.

[0031] More preferably, the child seat mechanism further has a folded state, in the folded state the backrest and the seat are close to each other; the leg support is provided with a long slot, the second end of the third push rod is provided with a connecting pin, the connecting pin is inserted into the long slot and can rotate and slide in the long slot, so as to make the leg support and the backrest close to each other after the child seat mechanism is folded; the seat is provided with a sliding sleeve, the second push rod can slide through the sliding sleeve in the front-rear direction.

[0032] In a preferred embodiment, the child seat mechanism comprises a fixed seat, the first connecting part of the backrest is rotationally connected to the fixed seat, the seat is slidingly arranged on the fixed seat, the second connecting part of the backrest is rotationally connected to the seat, and the second connecting part and the first connecting part are arranged at intervals.

[0033] The angle adjusting device comprises a first linkage rod connected to the leg support, a second linkage rod slidingly connected to the seat in the front-rear direction, and a third linkage rod rotationally connected to the backrest, the front end part of the first linkage rod is rotationally connected to the second linkage rod, and the rear end part of the second linkage rod is rotationally connected to the third linkage rod.

[0034] The utility model discloses still adopt following technical scheme:

[0035] A carrier comprises the seat mechanism.

[0036] The utility model discloses adopt above scheme, and has following advantages:

[0037] The seat mechanism has a zero-gravity state, and the backrest and the leg support are linked through the angle adjusting device, the leg support is automatically turned to the required angle by operating the backrest, the seat mechanism can be converted to the zero-gravity state by operating the backrest, the height of the heart and the knee of the passenger is basically consistent in the zero-gravity state, the passenger has the best comfort in this posture, and the state conversion operation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical scheme of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled person in the art, other drawings can be obtained according to these drawings without paying creative labor.

[0039] Figure 1 It is a side view of a seat mechanism according to the embodiment 1 of the utility model in a sitting posture.

[0040] Figure 2 It is a side view of a seat mechanism according to the embodiment 1 of the utility model in a zero-gravity state.

[0041] Figure 3 It is a side view of a seat mechanism according to the embodiment 1 of the utility model in a lying posture.

[0042] Figure 4 It is a perspective view of a seat mechanism according to the embodiment 1 of the utility model in a sitting posture.

[0043] Figure 5It is a perspective view of a seat mechanism according to the embodiment 1 of the utility model in a zero gravity state.

[0044] Figure 6 It is a perspective view of a seat mechanism according to the embodiment 1 of the utility model in a lying posture state.

[0045] Figure 7 It is a schematic view of a backrest and an upper driving rod of a seat mechanism according to the embodiment 1 of the utility model.

[0046] Figure 8 It is a schematic view of a connecting seat and a lower driving rod of a seat mechanism according to the embodiment 1 of the utility model.

[0047] Figure 9 It is a side view of a seat mechanism according to the embodiment 1 of the utility model in a folding process.

[0048] Figure 10 It is a side view of a seat mechanism according to the embodiment 1 of the utility model in a folded state.

[0049] Figure 11 It is a perspective view of a carrier according to the embodiment 1 of the utility model.

[0050] Figure 12 It is a side view of a carrier according to the embodiment 1 of the utility model, wherein a seat mechanism is in a sitting posture state.

[0051] Figure 13 It is a side view of a carrier according to the embodiment 1 of the utility model, wherein a seat mechanism is in a zero gravity state.

[0052] Figure 14 It is a side view of a carrier according to the embodiment 1 of the utility model, wherein a seat mechanism is in a lying posture state.

[0053] Figure 15 It is a perspective view of a seat mechanism according to the embodiment 2 of the utility model in a sitting posture state.

[0054] Figure 16 It is an exploded view of a seat and a side base and a backrest connecting rod according to the embodiment 2 of the utility model.

[0055] Figure 17 It is a structural view of a backrest and a second locking piece according to the embodiment 2 of the utility model.

[0056] Figure 18 It is a perspective view of a seat mechanism according to the embodiment 2 of the utility model in a zero gravity state.

[0057] Figure 19It is a side view of a seat mechanism according to the embodiment 2 of the utility model in a sitting posture.

[0058] Figure 20 It is a side view of a seat mechanism according to the embodiment 2 of the utility model in a zero gravity state.

[0059] Figure 21 It is a side view of a seat mechanism according to the embodiment 2 of the utility model in a lying posture.

[0060] Figure 22 It is a side view of a seat mechanism according to the embodiment 2 of the utility model in a folding state.

[0061] Figure 23 It is a perspective view of a carrier according to the embodiment 2 of the utility model.

[0062] Figure 24 It is a side view of a carrier according to the embodiment 2 of the utility model, wherein a seat mechanism is in a sitting posture.

[0063] Figure 25 It is a side view of a carrier according to the embodiment 2 of the utility model, wherein a seat mechanism is in a zero gravity state.

[0064] Figure 26 It is a side view of a carrier according to the embodiment 2 of the utility model, wherein a seat mechanism is in a lying posture.

[0065] Figure 27 It is a perspective view of a seat mechanism according to the embodiment 3 of the utility model in a sitting posture.

[0066] Figure 28 It is a perspective view of a seat mechanism according to the embodiment 3 of the utility model in a zero gravity state.

[0067] Figure 29 It is a perspective view of a seat mechanism according to the embodiment 3 of the utility model in a lying posture.

[0068] Figure 30 It is a side view of a seat mechanism according to the embodiment 3 of the utility model in a zero gravity state.

[0069] Figure 31 It is a schematic view of a seat mechanism according to the embodiment 3 of the utility model in a zero gravity state.

[0070] Figure 32 It is an exploded view of a seat mechanism according to the embodiment 3 of the utility model in a zero gravity state.

[0071] Figure 33Fig. 3 is a position diagram of a seat and a guide block according to the third embodiment of the present application, wherein the seat mechanism is in a sitting position.

[0072] Figure 34 Fig. 4 is a position diagram of a seat and a guide block according to the third embodiment of the present application, wherein the seat mechanism is in a zero-gravity position.

[0073] Figure 35 Fig. 5 is a position diagram of a seat and a guide block according to the third embodiment of the present application, wherein the seat mechanism is in a lying position.

[0074] Figures 36 to 38 Figs. 6-8 are schematic diagrams of a seat mechanism according to the third embodiment of the present application in a sitting position, a zero-gravity position and a lying position, respectively, wherein the guide groove seat is not shown.

[0075] In the above drawings,

[0076] 100, child seat mechanism; 200, child stroller; 201, frame;

[0077] 1, seat; 2, backrest; 3, leg support; 3a, long slot; 4, angle adjusting device;

[0078] 11, connecting seat; 111, first lock hole; 112, second lock hole; 113, third lock hole; 12, seat rod; 13, backrest driving rod; 131, upper driving rod; 132, lower driving rod; 132a, fourth lock hole; 133, limiting hole; 14, first driving rod; 15, second driving rod; 16, third driving rod; 17, first locking piece; 18, backrest rod locking piece; 19, fourth driving rod; 19a, connecting pin;

[0079] 21, base; 211, first lock slot; 212, second lock slot; 213, third lock slot; 22, seat rod; 221, track slot; 221a, front end portion; 221b, corner portion; 221c, rear end portion; 222, sliding sleeve; 23, backrest connecting rod; 231, adjusting pin; 232, sliding slot; 24, second locking piece; 25, backrest rod; 251, mounting slot; 26, first push rod; 27, second push rod; 28, third push rod; 281, connecting pin;

[0080] 30, guide block; 31, fixed seat; 32, guide groove seat; 321, guide groove; 321a, front end portion; 321b, corner portion; 321c, rear end portion; 33a, first connecting portion; 33b, second connecting portion; 33c, third connecting portion; 34, angle adjusting device; 341, first linkage rod; 342, second linkage rod; 343, third linkage rod; 344, fourth linkage rod; 345, first limiting slot; 346, second limiting slot; 35, rotating joint. DETAILED DESCRIPTION

[0081] The preferred embodiments of the present application will be described in detail below with reference to the drawings. It should be noted that the description of the embodiments is only intended to help understanding the present application and should not be construed as limiting the present application. In addition, the technical features involved in each of the embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0082] In this document, the terms "upper", "lower", "left", "right", and the like indicate the orientation or positional relationship shown in the drawings based on the child seat mechanism in a sitting state, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0083] Figures 1 to 38 The drawings are drawn to scale, and in order to maintain the brevity of the specification, the proportions of the elements are not listed one by one, but the proportions and positions of the elements should be considered as part of the content of the specification.

[0084] Example 1

[0085] The present embodiment provides a child seat mechanism and a carrier for carrying a child, which can be a stroller, an automobile safety seat, etc.

[0086] Referring to Figures 1 to 10 , the child seat mechanism 100 mainly includes a seat 1 and a backrest 2, the seat 1 defines a first plane P1 for supporting the thighs of an occupant, and the backrest 2 defines a second plane P2 for supporting the back of the occupant, as shown in Figure 2 . The seat 1 and the backrest 2 can rotate relative to each other, so that the child seat mechanism 100 has at least three use states, including a sitting state (as shown in Figure 1 ), a lying state (as shown in Figure 3 ), and a zero-gravity state (as shown in Figure 2 ) between the sitting state and the lying state. In each use state, the included angle between the seat 1 and the backrest 2 (i.e., the included angle between the first plane P1 and the second plane P2) is different to allow the occupant to use in different postures; specifically, the included angle between the first plane P1 and the second plane P2 in the zero-gravity state is greater than the included angle between the first plane P1 and the second plane P2 in the sitting state and less than the included angle between the first plane P1 and the second plane P2 in the lying state. As shown in Figure 2As shown, in a zero-gravity state, the front of seat 1 is higher than its rear. The first plane P1 has a first angle α1 greater than zero relative to the horizontal plane, and the second plane P2 has a second angle α2 greater than zero relative to the horizontal plane. This ensures that the occupant's heart (position H1) and knees (position H2) are at the same height, providing optimal comfort. Both the first angle α1 and the second angle α2 are less than 90 degrees. The first angle α1 is 18–40 degrees, preferably 25–35 degrees. The second angle α2 is 35–55 degrees, preferably 40–50 degrees.

[0087] like Figure 1 As shown, in the seated position, the angle between the first plane P1 and the horizontal plane is less than the first angle α1, and the angle between the second plane P2 and the horizontal plane is greater than the second angle α2. That is, in the seated position, the seat 1 is generally horizontal, or tilted at a small angle (less than the first angle α1, which can be between 0 and 10 degrees) so that the front of the seat 1 is slightly higher than the back; the backrest 2 forms a larger angle with the horizontal plane (greater than the second angle α2, which can be between 90 and 80 degrees). Figure 3 As shown, in the lying position, the angle between the first plane P1 and the horizontal plane is greater than the first angle α1, and the angle between the second plane P2 and the horizontal plane is less than the second angle α2. That is, in the lying position, the seat 1 is generally horizontal, or tilted at a small angle (less than the first angle α1, which can be between 0 and 10 degrees) so that the front of the seat 1 is slightly higher than the back; the backrest 2 forms a small angle with the horizontal plane (less than the second angle α2, which can be between 0 and 20 degrees).

[0088] Furthermore, the child seat mechanism 100 includes a leg support 3, which is rotatable relative to the seat 1, thereby having different tilt angles in different usage states. In this embodiment, the upper end of the leg support 3 is rotatably connected to the front end of the seat 1. The leg support 3 is located on the front side of the seat 1 and defines a third plane P3 for supporting the occupant's lower legs. In a zero-gravity state, the lower end of the leg support 3 is located in front of its upper end, and the third plane P3 has a third included angle α3 greater than zero relative to the horizontal plane. The third included angle α3 is 26~40 degrees, preferably 28~35 degrees. Figure 2 In the specific example shown, the first included angle α1 is 30 degrees, the second included angle α2 is 45 degrees, and the third included angle α3 is 31 degrees; the included angle between the seat 1 on the first plane P1 and the backrest 2 on the second plane P2 is approximately 105 degrees.

[0089] In the Figure 1 The sitting posture shown will be converted to the following sequence: Figure 2 The zero gravity state shown and Figure 3In the lying position shown, the first angle a1 first increases and then decreases, the second angle a2 decreases in turn, the third angle a3 gradually decreases, and the angle between the first plane P1 on which the seat 1 is located and the second plane P2 on which the backrest 2 is located increases in turn.

[0090] Further, the child seat mechanism 100 also has a folded state, in which the backrest 2 and the seat 1 are close to each other. After the child seat mechanism 100 is unfolded, it can be converted into any of the use states for use, such as Figure 1 the sitting position shown, Figure 2 the zero-gravity position shown, Figure 3 and the lying position shown.

[0091] The child seat mechanism also includes an angle adjusting device 4, the front end of which is connected to the leg support 3 and the rear end of which is connected to the backrest 2, so that the leg support 3 rotates with the backrest 2 when the backrest 2 rotates. The structure and adjusting principle of the angle adjusting device 4 of the present embodiment will be described in detail below.

[0092] The child seat mechanism 100 includes a connecting base 11 that fixes the child seat mechanism 100 to a support part of a carrier (such as a frame of a stroller, a base of a car safety seat, etc.) or has an interface for connection with the support part of the carrier. The rear part of the seat 1 is pivotally connected to the connecting base 11; in the present embodiment, the seat 1 includes two seat rods 12 extending front to back, and specifically, the rear end of the seat rod 12 is pivotally connected to the connecting base 11. The angle adjusting device 4 described above includes a backrest driving rod 13, a first driving rod 14, a second driving rod 15, and a third driving rod 16. The backrest 2 is pivotally connected to the connecting base 11 through the backrest driving rod 13, and the upper part of the backrest driving rod 13 is fixedly connected or integrated with the backrest 2. The first end of the first driving rod 14 is pivotally connected to the backrest driving rod 13, the first end of the second driving rod 15 is pivotally connected to the connecting base 11, and the first end of the third driving rod 16 is pivotally connected to the seat rod 12 of the seat 1. The second end of the first driving rod 14, the second end of the second driving rod 15, and the second end of the third driving rod 16 are pivotally connected. In the present embodiment, the pivotally connected between the driving rods is achieved by a pivot, and the second end of the first driving rod 14, the second end of the second driving rod 15, and the second end of the third driving rod 16 are pivotally connected by one pivot. Among them, the seat rod 12, the backrest driving rod 13, the first driving rod 14, and the third driving rod 16 form a four-bar linkage mechanism, when the backrest 2 is pressed and the backrest driving rod 13 is flipped, the four-bar linkage mechanism is deformed, and at the same time, the seat 1 is limited by the second driving rod 15 connected to the connecting base 11 to flip within a set angle range, so as to change the angle and realize the posture conversion.

[0093] The angle adjustment device 4 also includes a first locking member 17 having a locked state and an unlocked state. In the locked state, the first locking member 17 connects at least two of the following components: the connecting seat 11, the backrest drive rod 13, the first drive rod 14, the second drive rod 15, the third drive rod 16, and the connecting seat 11, to lock the angle adjustment device 4 and thereby stabilize the child seat mechanism 100 in a sitting, zero-gravity, or reclining state. In the unlocked state, the first locking member 17 disengages from at least two components to release the angle adjustment device 4, thereby allowing the backrest 2 and the seat 1 to rotate relative to each other.

[0094] Furthermore, combined Figure 7 and Figure 8 As shown, the backrest drive rod 13 includes an upper drive rod 131 and a lower drive rod 132. The upper drive rod 131 is fixedly connected to the lower end of the backrest 2 or is integral with the backrest 2, and is rotatably connected to the connecting seat 11. The first end of the lower drive rod 132 is rotatably connected to the connecting seat 11 or the first end of the upper drive rod 131, and the second end of the lower drive rod 132 is rotatably connected to the first end of the first drive rod 14. Specifically, in this embodiment, one end of the upper drive rod 131 and the first end of the lower drive rod 132 are rotatably connected to the connecting seat 11 via the same pivot. The angle adjustment device 4 also includes a backrest rod locking member 18. The backrest rod locking member 18 has a locked state and an unlocked state. In the locked state, the backrest rod locking member 18 connects the upper drive rod 131 and the lower drive rod 132. In the unlocked state, the backrest rod locking member 18 disengages from the upper drive rod 131 and / or the lower drive rod 132 to allow the upper drive rod 131 to flip relative to the lower drive rod 132, thereby folding or unfolding the child seat mechanism 100. It should also be noted that in the locked state, the backrest rod locking member 18 is offset from the rotational connection point of the upper drive rod 131 and the lower drive rod 132.

[0095] Specifically, in this embodiment, in the locked state, the first locking member 17 connects the lower drive rod 132 of the backrest drive rod 13 and the connecting seat 11 to lock the backrest drive rod 13 and the connecting seat 11. The backrest drive rod 13 cannot be rotated relative to the connecting seat 11, thereby stabilizing the child seat mechanism 100 in a sitting, zero-gravity, or reclining position. In the unlocked state, the first locking member 17 disengages from the lower drive rod 132 and / or the connecting seat 11, allowing them to rotate relative to each other. The seat 1 drive mechanism is released, thereby allowing the aforementioned four-bar linkage to deform, and the seat 1 and backrest 2 can rotate relative to each other. Figures 1 to 10 In the specific example shown, the first locking element 17 includes a locking pin; see reference Figure 8The connecting seat 11 is provided with a first locking hole 111, a second locking hole 112 and a third locking hole 113. The first locking hole 111, the second locking hole 112 and the third locking hole 113 are arranged along the arc-shaped path of the lower drive rod 132 rotating relative to the connecting seat 11. Figure 8 The circular path (shown by the dashed line) is arranged sequentially at intervals, and the lower drive rod 132 is provided with a fourth locking hole 132a. When the child seat mechanism 100 is in a sitting position, the fourth locking hole 132a and the first locking hole 111 are aligned and connected. The first locking member 17 is inserted into the fourth locking hole 132a and the first locking hole 111 to lock the upper drive rod 131 relative to the connecting seat 11, thereby locking the child seat mechanism 100 in a sitting position. Figure 4 As shown. In a zero-gravity state, the fourth locking hole 132a and the second locking hole 112 of the child seat mechanism 100 are aligned and connected. The first locking member 17 is inserted into the fourth locking hole 132a and the second locking hole 112 to lock the upper drive rod 131 relative to the connecting seat 11, thereby locking the child seat mechanism 100 in a zero-gravity state, as shown. Figure 5 As shown. When the child seat mechanism 100 is in a reclining position, the fourth locking hole 132a and the third locking hole 113 are aligned and connected. The first locking member 17 is inserted into the fourth locking hole 132a and the third locking hole 113 to lock the upper drive rod 131 relative to the connecting seat 11, thereby locking the child seat mechanism 100 in a reclining position, as shown. Figure 6 As shown.

[0096] like Figure 7 and Figure 8 As shown, the backrest locking member 18 includes a limiting pin. Limiting holes 133 are respectively provided on the upper drive rod 131 and the lower drive rod 132. When the limiting holes 133 on the upper drive rod 131 and the lower drive rod 132 are aligned and connected, the backrest locking member 18 is inserted into the two limiting holes 133, locking the upper drive rod 131 and the lower drive rod 132 into one unit, preventing relative rotation. At this time, the child seat mechanism 100 can be in any usage state. Preferably, when the backrest locking member 18 locks the upper drive rod 131 and the lower drive rod 132 together, the center lines of the upper drive rod 131 and the lower drive rod 132 are collinear or parallel. When the child seat mechanism 100 needs to be folded, the backrest locking member 18 is pulled out from the limiting holes 133 of the upper drive rod 131 and / or the lower drive rod 132, unlocking the upper drive rod 131 and the lower drive rod 132, allowing relative rotation.

[0097] The angle adjustment device 4 also includes a fourth drive rod 19, the first end of which is rotatably connected to the second drive rod 15 or the third drive rod 16, and the second end of which is rotatably connected to the leg support 3. Figures 4 to 6As shown, the first end of the fourth driving rod 19 is pivotally connected between the first end and the second end of the third driving rod 16. When the four-bar linkage mechanism of the angle adjusting device 4 is deformed, the fourth driving rod 19 is flipped to push the leg support 3 to flip upward relative to the seat rod 12.

[0098] Further, the second end of the fourth driving rod 19 is also slidable relative to the leg support 3 to allow the lower end of the leg support 3 and the backrest 2 to be closer to each other after the child seat mechanism 100 is folded, as shown in Figure 9 and Figure 10 Specifically, the leg support 3 is provided with a long slot 3a extending along the center line of the leg support 3. The second end of the fourth driving rod 19 is provided with a connecting pin 19a which is inserted into the long slot 3a and is configured to be rotatable and slidable in the long slot 3a. When the child seat mechanism 100 is converted from the sitting state to the folded state, the connecting pin 19a is first slid from the lower end of the long slot 3a to the upper end thereof, as shown in Figure 9 Then, the leg support 3 is flipped upward to be further closer to the backrest 2, reducing the thickness of the child seat mechanism 100 after being folded. During this process, the connecting pin 19a is slid from the upper end of the long slot 3a to the lower end thereof, and at this time, the upper end of the long slot 3a can be substantially level with the lower end thereof.

[0099] The embodiment also provides a carrier 200, which can be a child stroller as shown in Figures 11 to 14 Referring to Figures 11 to 14 , the child stroller includes a frame 201 and wheels arranged at the bottom of the frame 201, and the frame 201 is provided with an interface to which the connecting seat 11 of the child seat mechanism 100 is removably or fixedly connected. The frame 201 has an unfolded state and a folded state, and the child seat mechanism 100 can be unfolded and folded on the frame 201 and has three use states of sitting, zero gravity and lying after being unfolded, as shown in Figure 12 , Figure 13 and Figure 14 .

[0100] The process of converting the child seat mechanism 100 between the three use states is as follows:

[0101] When the child seat mechanism 100 is in the lying position, the backrest bar lock 18 is kept in its locked state, the first lock 17 is pulled out of the second lock hole 112 of the lower driving rod 132 and / or the third lock hole 113 of the connecting base 11 to unlock the angle adjusting device 4; the backrest 2 is pushed upward, the four-bar linkage mechanism of the angle adjusting device 4 is deformed, the seat bar 12 is turned over, the front part of the seat bar 12 is turned downward, and the fourth driving rod 19 pulls the leg support 3 to turn downward; until the fourth lock hole 132a on the lower driving rod 132 moves to be aligned with the second lock hole 112 of the connecting base 11, the first lock 17 is inserted into the fourth lock hole 132a and the second lock hole 112 to lock the child seat mechanism 100 in the zero-gravity state, and the conversion from the lying position to the zero-gravity state is realized. The conversion process from the lying position or the zero-gravity state to the sitting position is similar to the foregoing process, except that the first lock 17 is inserted into the fourth lock hole 132a and the first lock hole 111 after the fourth lock hole 132a and the first lock hole 111 of the connecting base 11 are aligned.

[0102] When the child seat mechanism 100 is in the lying position, the backrest bar lock 18 is kept in its locked state, the first lock 17 is pulled out of the second lock hole 112 of the lower driving rod 132 and / or the third lock hole 113 of the connecting base 11 to unlock the angle adjusting device 4; the backrest 2 is pushed upward, the four-bar linkage mechanism of the angle adjusting device 4 is deformed, the seat bar 12 is turned over, the front part of the seat bar 12 is turned downward, and the fourth driving rod 19 pulls the leg support 3 to turn downward; until the fourth lock hole 132a on the lower driving rod 132 moves to be aligned with the second lock hole 112 of the connecting base 11, the first lock 17 is inserted into the fourth lock hole 132a and the second lock hole 112 to lock the child seat mechanism 100 in the zero-gravity state, and the conversion from the lying position to the zero-gravity state is realized. The conversion process from the lying position or the zero-gravity state to the sitting position is similar to the foregoing process, except that the first lock 17 is inserted into the fourth lock hole 132a and the first lock hole 111 after the fourth lock hole 132a and the first lock hole 111 of the connecting base 11 are aligned.

[0103] The folding process of the child seat mechanism 100 is as follows:

[0104] The child seat mechanism 100 is kept in the sitting position, the backrest bar lock 18 is pulled out of the limiting hole 133 of the upper driving rod 131 and / or the lower driving rod 132 to unlock the backrest driving rod 13, the backrest 2 is pushed forward to be close to the seat 1, and the child seat mechanism 100 is kept in the state shown in FIG. 8. Figure 9 The leg support 3 is turned upward to be close to the backrest 2, and the child seat mechanism 100 is finally converted to the folding state shown in FIG. 9. Figure 10 The leg support 3 is turned upward to be close to the backrest 2, and the child seat mechanism 100 is finally converted to the folding state shown in FIG. 9.

[0105] The child seat mechanism 100 has the following advantages: it has multiple usage states, including a zero-gravity state, in which the height of the passenger's heart and knees is basically the same, providing optimal comfort and ease of use, allowing children in the child seat mechanism 100 to adopt various postures; the backrest 2 allows the child seat mechanism 100 to switch between multiple usage states such as sitting, zero-gravity, and reclining, and the switching operation is convenient; the angle of the leg support 3 also automatically changes accordingly in different usage states, providing corresponding support for the lower legs, further improving riding comfort and ease of use.

[0106] Example 2

[0107] This embodiment provides a Figures 15 to 22 The diagram shows a child seat mechanism 100 and a vehicle for carrying a child, which can be a stroller, car seat, etc. The vehicle 200 can be... Figures 23 to 26 The stroller shown.

[0108] Reference Figures 15 to 22 As shown, similar to Embodiment 1, this child seat mechanism 100 mainly includes a seat 1, a backrest 2, and a leg support 3. The seat 1 defines a first plane P1 for supporting the occupant's thighs, and the backrest 2 defines a second plane P2 for supporting the occupant's back. The leg support 3 is located in front of the seat 1 and defines a third plane P3 for supporting the occupant's lower legs, as shown. Figure 20 As shown. The seat 1 and backrest 2 can rotate relative to each other, and the leg support 3 can rotate relative to the seat 1, so that the child seat mechanism 100 has at least three usage states, including a sitting position (e.g., Figure 19 As shown), lying position (such as...) Figure 21 (as shown) and the zero-gravity state between sitting and lying positions (such as...) Figure 20 As shown). Figure 20 As shown, in a zero-gravity state, the front end of seat 1 is higher than its rear end. The first plane P1 has a first angle α1 greater than zero relative to the horizontal plane, the second plane P2 has a second angle α2 greater than zero relative to the horizontal plane, and the third plane P3 has a third angle α3 greater than zero relative to the horizontal plane. This arrangement ensures that the occupant's heart (position H1) and knees (position H2) are at the same height, providing optimal comfort. The first angle α1, second angle α2, and third angle α3 are all less than 90 degrees. The first angle α1 is 18-40 degrees, preferably 25-35 degrees. The second angle α2 is 35-55 degrees, preferably 40-50 degrees. The third angle α3 is 26-40 degrees, preferably 28-35 degrees. Figure 20In the specific example shown, the first included angle α1 is 30 degrees, the second included angle α2 is 45 degrees, and the third included angle α3 is 31 degrees; the included angle between the seat 1 on the first plane P1 and the backrest 2 on the second plane P2 is approximately 105 degrees.

[0109] In the Figure 19 The sitting posture shown will be converted to the following sequence: Figure 20 The zero gravity state shown and Figure 21 In the lying position shown, the first included angle α1 first increases and then decreases, the second included angle α2 decreases successively, the third included angle α3 decreases successively, and the included angle between the seat 1 on the first plane P1 and the backrest 2 on the second plane P2 increases successively.

[0110] The child seat mechanism also includes an angle adjustment device 4, the front end of which is connected to the leg support 3 and the rear end to the backrest 2, so that the leg support 3 rotates when the backrest 2 rotates. The structure and adjustment principle of the angle adjustment device 4 in this embodiment will be described in detail below.

[0111] The child seat mechanism 100 includes a base 21, which is part of or detachably connected to the support portion of the vehicle 200 (e.g., the frame 201 of a stroller, the base of a car seat, etc.) to mount the child seat mechanism 100 onto the support portion of the vehicle 200. The seat 1 includes a seat post 22, which is rotatably connected to the base 21. Figures 19 to 21 As shown, the rear end of the seat rod 22 is rotatably connected to the base 21 via pivot a1. The angle adjustment device 4 includes a backrest link 23, and the backrest 2 includes backrest rods 25 located on the left and right sides of the backrest 2. The backrest link 23 is connected to the lower end of the backrest rods 25 and is rotatably connected to the base 21. Figures 19 to 21 As shown, the lower end of the backrest link 23 is rotatably connected to the base 21 via pivot a2. The seat rod 22 and the backrest link 23 are slidably and rotatably connected so that when the backrest link 23 rotates with the backrest 2, it drives the seat rod 22 to rotate, thereby changing the usage state of the child seat mechanism 100. Specifically, as shown... Figure 16 , Figures 19 to 21As shown, the seat rod 22 is provided with a track slot 221, and the backrest connecting rod 23 is provided with an adjusting pin 231, which is slidably inserted into the track slot 221, and the seat rod 22 and the backrest connecting rod 23 are rotatably and slidably connected only through the adjusting pin 231. When the backrest 2 is rotated, the adjusting pin 231 can slide along the track slot 221, thereby allowing the backrest 2 and the seat 1 to rotate relative to each other. It should be noted that the pivot a1, the pivot a2 and the adjusting pin 231 are arranged in a triangular shape on the base 21, and when the backrest connecting rod 23 is rotated, the backrest connecting rod 23 rotates around the pivot a2, the adjusting pin 231 slides along the track slot 221, thereby driving the seat rod 22 to rotate around the pivot a1, and the seat rod 22 is flipped relative to the base 21, thereby changing the angle of the seat rod 22 relative to the horizontal plane.

[0112] As shown, Figure 16 The track slot 221 has a front end portion 221a, a rear end portion 221c and a corner portion 221b between the front end portion 221a and the rear end portion 221c, and the corner portion 221b is located at the rear side of the front end portion 221a and at the upper side of the rear end portion 221c. The track slot 221 is L-shaped as a whole. When the child seat mechanism 100 is in the lying state, the adjusting pin 231 is located in the front end portion 221a of the track slot 221, as shown. Figure 21 When the child seat mechanism 100 is in the zero-gravity state, the adjusting pin 231 is located in the corner portion 221b, as shown. Figure 20 When the child seat mechanism 100 is in the sitting state, the adjusting pin 231 is located in the rear end portion 221c, as shown. Figure 19

[0113] The angle adjusting device 4 further comprises a second locking member 24, which, in the locked state, is arranged on the base 21 and the backrest connecting rod 23, thereby locking the backrest connecting rod 23 relative to the base 21; and in the unlocked state, the second locking member 24 releases the backrest connecting rod 23 and the base 21, thereby allowing the backrest connecting rod 23 to rotate relative to the base 21. In some other embodiments, the second locking member 24 can also be arranged on the base 21 and the seat rod 22 in the locked state, and releases the base 21 and the seat rod 22 in the unlocked state. In the example shown in the drawings, the second locking member 24 comprises a sliding pin, and the second locking member 24 is slidably arranged on the backrest connecting rod 23. Specifically, the backrest connecting rod 23 is provided with a sliding groove 232 extending along the length direction thereof, and the second locking member 24 is slidably inserted into the sliding groove 232. The base 21 is provided with a plurality of lock slots arranged in sequence along the outer circumferential direction of the base 21, and the second locking member 24 is inserted into the sliding groove 232 and one of the lock slots in any use state of the child seat mechanism 100, and the second locking member 24 and the lock slot are disengaged to allow the child seat mechanism 100 to be switched between use states. Specifically, as shown, Figure 16 ​As shown, a first locking groove 211, a second locking groove 212, and a third locking groove 213 are provided on the outer peripheral surface of the base 21. The first locking groove 211, the second locking groove 212, and the third locking groove 213 extend inward from the outer peripheral edge of the base 21, thereby allowing the second locking member 24 to enter and exit any of the locking grooves. The first locking groove 211, the second locking groove 212, and the third locking groove 213 are arranged at intervals.

[0114] Furthermore, the second locking member 24 can also lock and unlock the backrest link 23 and the backrest rod 25 together. When the child seat mechanism 100 is unfolded, regardless of its usage state or during transitions between different usage states, the second locking member 24 always connects the backrest rod 25 and the backrest link 23. When the child seat mechanism 100 needs to be folded, the second locking member 24 is in the unlocked state, disengaging from the backrest link 23, allowing the backrest rod 25 to flip forward relative to the backrest link 23 to align with the seat 1. The second locking member 24 is mounted on the backrest rod 25 and can slide relative to it. Specifically, as... Figure 17 As shown, the backrest rod 25 has a mounting groove 251 extending along its length, and the second locking member 24 is slidably disposed in the mounting groove 251. The length of the mounting groove 251 is greater than the length of the slide groove 232, and the upper end of the slide groove 232 is open to allow the second locking member 24 to enter and exit the slide groove 232. Figure 16 As shown, the slide groove 232 extends downward from the upper edge of the backrest link 23, and is U-shaped overall. Figures 19 to 21 During any of the shown usage states or transitions between different usage states, the second locking element 24 will not disengage from the slide 232. When the child seat mechanism 100 needs to be folded, as shown... Figure 22 As shown, the second locking member 24 is moved upward to disengage it from the slide groove 232. At this time, the backrest rod 25 and the backrest connecting rod 23 are unlocked, and the backrest rod 25 can be flipped forward relative to the backrest connecting rod 23 to move closer to the seat 1 and achieve folding.

[0115] The upper end of the leg support 3 is pivotally connected to the front of the seat 1. The angle adjustment device 4 also includes a first push rod 26, a second push rod 27, and a third push rod 28. The first end of the first leg support 3 is rotatably connected to the backrest link 23. The first end of the second push rod 27 is rotatably connected to the second end of the first push rod 26. The first end of the third push rod 28 is rotatably connected to the second end of the second push rod 27, and the second end of the third push rod 28 is rotatably connected to the leg support 3. When the backrest link 23 rotates, the first push rod 26 rotates accordingly, thereby pushing the leg support 3 to flip and change its angle through the second push rod 27 and the third push rod 28. The second push rod 27 is slidably mounted on the seat 1 in the front-back direction. Specifically, the seat rod 22 is provided with a sliding sleeve 222, through which the second push rod 27 can slide in the front-back direction.

[0116] Further, the second end of the third push rod 28 is slidable relative to the leg support 3 to allow the child seat mechanism 100 to fold the lower end of the leg support 3 and the backrest 2 towards each other, as shown in Figure 22 Particularly, the leg support 3 is provided with a long slot 3a extending along the center line of the leg support 3. The second end of the third push rod 28 is provided with a connecting pin 281 which is inserted into the long slot 3a and configured to be rotatable and slidable in the long slot 3a. During the transition of the child seat mechanism 100 from the sitting state to the folded state, the connecting pin 281 slides from the lower end of the long slot 3a to the upper end thereof, as shown in Figure 22 .

[0117] The present embodiment also provides a carrier 200 which can be a child stroller as shown in Figures 23 to 26 Referring to Figures 23 to 26 , the child stroller comprises a frame 201 and wheels arranged at the bottom of the frame 201, and the base 21 of the child seat mechanism 100 is fixed to the frame 201 and is a part of the frame 201, for example, can be a part of the rotating joint of the frame 201. The frame 201 has an unfolded state and a folded state, and the child seat mechanism 100 can be unfolded and folded on the frame 201, and has three use states of sitting, zero gravity and lying after unfolding, as shown in Figure 24 , Figure 25 and Figure 26 respectively.

[0118] The transition of the child seat mechanism 100 between the three use states is as follows:

[0119] When the child seat mechanism 100 is in the sitting position, the second locking piece 24 is inserted into the mounting groove 251, the sliding groove 232 and the first locking groove 211 to lock the child seat mechanism 100 in the sitting position; when the second locking piece 24 is moved upward to be separated from the first locking groove 211 and moved along the outer circumferential surface of the base 21 between the first locking groove 211 and the second locking groove 212, in this process, the second locking piece 24 is still in the sliding groove 232 and the mounting groove 251; then, the backrest 2 is pressed downward, the backrest connecting rod 23 rotates upward relative to the base 21, the adjusting pin 231 is slid from the rear end of the track groove 221 to the corner of the track groove 221, the seat rod 22 rotates around the base 21, the front side thereof is lifted upward, and the first push rod 26, the second push rod 27 and the third push rod 28 cooperate to push the leg support 3 to turn upward; until the second locking piece 24 is slid above the second locking groove 212 and falls into the second locking groove 212, the child seat mechanism 100 is locked in the zero-gravity state, and the conversion from the sitting position to the zero-gravity state is realized. The conversion process from the sitting position or the zero-gravity state to the lying position is similar to the foregoing process, and the difference lies in that the second locking piece 24 is slid above the third locking groove 213 and falls into the third locking groove 213 to lock the child seat mechanism 100 in the lying position.

[0120] When the child seat mechanism 100 is in the lying position, the second locking piece 24 is inserted into the mounting groove 251, the sliding groove 232 and the third locking groove 213 to lock the child seat mechanism 100 in the lying position; when the second locking piece 24 is moved upward to be separated from the third locking groove 213 and moved along the outer circumferential surface of the base 21 between the third locking groove 213 and the second locking groove 212, in this process, the second locking piece 24 is still in the sliding groove 232 and the mounting groove 251; then, the backrest 2 is pushed upward, the backrest connecting rod 23 rotates downward relative to the base 21, the adjusting pin 231 is slid from the front end of the track groove 221 to the corner of the track groove 221, the seat rod 22 rotates around the base 21, the front side thereof is turned downward, and the first push rod 26, the second push rod 27 and the third push rod 28 cooperate to push the leg support 3 to turn downward; until the second locking piece 24 is slid above the second locking groove 212 and falls into the second locking groove 212, the child seat mechanism 100 is locked in the zero-gravity state, and the conversion from the lying position to the zero-gravity state is realized. The conversion process from the lying position or the zero-gravity state to the sitting position is similar to the foregoing process, and the difference lies in that the second locking piece 24 is slid above the first locking groove 211 and falls into the first locking groove 211 to lock the child seat mechanism 100 in the sitting position.

[0121] The folding process of the child seat mechanism 100 is as follows:

[0122] The child seat mechanism 100 is in the sitting state, the second locking member 24 is moved upward, the second locking member 24 is disengaged from the sliding groove 232, the backrest rod 25 and the backrest connecting rod 23 are unlocked, the backrest rod 25 is pushed forward to move closer to the seat 1, and the child seat mechanism 100 is converted to Figure 22 the folding state shown.

[0123] The child seat mechanism 100 has the following advantages: The child seat mechanism 100 has multiple use states, and includes a zero-gravity state in which the heart and knees of an occupant are at substantially the same height, the occupant has the best comfort in this posture, and the child seat mechanism 100 allows the child to have multiple postures; the backrest 2 can be operated to convert the child seat mechanism 100 between the sitting state, the zero-gravity state, and the lying state, and the conversion operation is convenient; in different use states, the angle of the leg support 3 is also automatically changed to provide corresponding support for the lower leg, which further improves the comfort of the occupant and is convenient to use.

[0124] Embodiment 3

[0125] The embodiment provides a child seat mechanism 100 Figures 27 to 38 and a carrier for carrying a child, which can be a stroller, an automobile safety seat, etc.

[0126] Referring to Figures 27 to 38 similar to embodiment 1, the child seat mechanism 100 mainly includes a seat 1, a backrest 2, and a leg support 3. The seat 1 includes a seat plate defining a first plane P1 for supporting the thighs of an occupant; the backrest 2 includes a backrest plate defining a second plane P2 for supporting the back of an occupant. The leg support 3 is located at the front side of the seat 1, and the leg support 3 includes a leg plate defining a third plane P3 for supporting the lower leg of an occupant, as shown in Figure 30 The seat 1 and the backrest 2 can be relatively rotated, and the leg support 3 can be relatively rotated with respect to the seat 1, so that the child seat mechanism 100 has at least three use states, including a sitting state (as shown in Figure 27 , a lying state (as shown in Figure 29 , and a zero-gravity state (as shown in Figure 28 ) between the sitting state and the lying state. As shown in Figure 28As shown, in the zero-gravity state, the front end of the seat 1 is higher than the rear end, the first plane P1 has a first included angle a1 greater than zero with the horizontal plane, the second plane P2 has a second included angle a2 greater than zero with the horizontal plane, and the third plane P3 has a third included angle a3 greater than zero with the horizontal plane, so that the heart (H1 position) and the knees (H2 position) of the occupant are at the same height, and the occupant has the best comfort in this state. The first included angle a1 is 18-40 degrees, the second included angle a2 is 35-55 degrees, and the third included angle a3 is 26-40 degrees.

[0127] As shown, in the sitting state, the first plane P1 has an included angle with the horizontal plane smaller than the first included angle a1, the second plane P2 has an included angle with the horizontal plane greater than the second included angle a2, and the third plane P3 has an included angle with the horizontal plane greater than the third included angle a3. Figure 27 As shown, in the lying state, the first plane P1 has an included angle with the horizontal plane smaller than the first included angle a1, the second plane P2 has an included angle with the horizontal plane smaller than the second included angle a2, and the third plane P3 has an included angle with the horizontal plane smaller than the third included angle a3. Figure 29

[0128] The child seat mechanism 100 includes a fixed seat 31 for fixing the child seat mechanism 100 on a support portion of a vehicle (e.g., a frame of a stroller, a base of a car safety seat, etc.). As shown, the lower end of the backrest 2 has a first connecting portion 33a and a second connecting portion 33b spaced apart from each other. Figure 32 According to the combination of the above two aspects, the first connecting portion 33a of the backrest 2 is rotationally connected to the fixed seat 31; specifically, the first connecting portion 33a is rotationally connected to the fixed seat 31 through a pivot a11. The second connecting portion 33b of the backrest 2 is rotationally connected to the seat 1; specifically, the second connecting portion 33b is rotationally connected to the seat 1 through a pivot a12. The seat 1 is slidingly arranged on the fixed seat 31. One of the fixed seat 31 and the seat 1 is provided with a guide groove 321, and the other is provided with a guide block 30, the guide block 30 is inserted into the guide groove 321 and can slide forward and backward along the guide groove 321. The shape of the guide groove 321 is configured such that, during the forward sliding of the guide block 30, the included angle of the seat plate with the horizontal plane first increases and then decreases, and the included angle of the leg support 3 with the horizontal plane gradually decreases. In this embodiment, the fixed seat 31 is provided with a guide groove seat 32, the guide groove 321 is arranged on the guide groove seat 32, and the guide groove 321 seat is fixed relative to the fixed seat 31 and cannot slide relative to the fixed seat 31. The guide block 30 is fixed on the seat 1. Figures 30 to 32

[0129] ​​Further, the guide groove 321 has a front end portion 321a, a rear end portion 321c and a corner portion 321b between the front end portion 321a and the rear end portion 321c, the corner portion 321b being higher than the front end portion 321a and the rear end portion 321c. When the backrest 2 is pressed down or pushed up, the backrest 2 moves in a circular motion around the pivot a11, and the second connecting portion 33b and the pivot a12 move in a circular motion, thereby driving the seat 1 to move relative to the fixed base 31. When the child seat mechanism 100 is in the lying position, the guide block 30 is located in the front end portion 321a of the guide groove 321, as shown in Fig. 3. When the child seat mechanism 100 is in the zero-gravity position, the guide block 30 is located in the corner portion 321b of the guide groove 321, as shown in Fig. 4. When the child seat mechanism 100 is in the sitting position, the guide block 30 is located in the rear end portion 321c of the guide groove 321, as shown in Fig. 5. Figure 35 Figure 34 Figure 33

[0130] The backrest 2 and the fixed base 31 are provided with a locking member (not shown in the figures), which connects the backrest 2 and the fixed base 31 to lock the child seat mechanism 100 in any use state. If the locking member is disengaged from the backrest 2 and / or the fixed base 31, the child seat mechanism 100 is in an unlocked state, and can be switched between the three use states.

[0131] The angle adjusting device 34 is provided between the backrest 2 and the leg support 3, and the angle of the leg support 3 can be automatically adjusted as the backrest 2 rotates. The angle adjusting device 34 is rotatably connected between the backrest 2 and the leg support 3, and includes a plurality of linkage rods. The angle adjusting device 34 can include a first linkage rod 341, a second linkage rod 342 and a third linkage rod 343. The first end portion of the first linkage rod 341 is rotatably connected to the leg support 3. The second linkage rod 342 is slidably arranged on the seat 1 in the front-rear direction, the first end portion (front end portion) of the second linkage rod 342 is rotatably connected to the second end portion of the first linkage rod 341, and the second end portion (rear end portion) of the second linkage rod 342 is rotatably connected to the first end portion of the third linkage rod 343. The second end portion of the third linkage rod 343 is directly or indirectly rotatably connected to the backrest 2. In the example shown in the figures, the second end portion of the third linkage rod 343 is rotatably connected to the backrest 2 through a fourth linkage rod 344. Specifically, Figure 32 ​​​As shown, the backrest 2 also has a third connecting part 33c, which is located below the second connecting part 33b, the first end (upper end) of the fourth connecting rod 344 is connected to the second connecting part 33b, preferably by a pivot a12, which simultaneously pivots the first end of the fourth connecting rod and the second connecting part 33b and the seat 1; the second end (lower end) of the fourth connecting rod 344 is connected to the third connecting part 33c, and the second end of the third connecting rod 343 is connected to the second end of the fourth connecting rod 344. The fourth connecting rod 344 strengthens the backrest 2, especially the part of the backrest 2 that is used to apply forward thrust or rearward pull to the angle adjusting device 34.

[0132] The seat 1 is provided with a limiting slot configured to limit the second connecting rod 342 to slide only relative to the seat 1. Specifically, as shown, Figure 32 The seat 1 is provided with a first limiting slot 345 and a second limiting slot 346 extending in the front-rear direction, which are respectively located on the front and rear sides of the guide block 30. The first connecting rod 341 and the second connecting rod 342 are pivoted, and the pivot connecting the two is inserted into the first limiting slot 345 and can move forward and backward in the first limiting slot 345. The second connecting rod 342 and the third connecting rod 343 are pivoted, and the pivot connecting the two is inserted into the second limiting slot 346 and can move forward and backward in the second limiting slot 346. The movement direction of the second connecting rod 342 is limited by the limiting slot, so that the leg support 3 can be turned over when the backrest 2 is turned over.

[0133] The process of the child seat mechanism 100 converting between the three use states is as follows:

[0134] When the seat mechanism 100 is in the sitting state, the backrest 2 and the fixed seat 31 are unlocked, the backrest 2 is pressed downward, the backrest 2 rotates around the pivot a11, the second connecting part 33b pushes the seat 1 to move forward and upward, under the action of the guide groove 321, the seat 1 is turned over to the desired angle, until the guide block 30 slides forward from the rear end of the guide groove 321 to the corner part 321b thereof, the seat mechanism 100 is in the zero-gravity state, realizing the conversion from the sitting state to the zero-gravity state. The conversion process from the sitting state or the zero-gravity state to the lying state is similar to the foregoing process, the difference is that when the guide block 30 slides forward to the front end of the guide groove 321, the seat mechanism 100 is in the lying state. In the above process, the backrest 2 drives the fourth connecting rod 344 to rotate around the pivot a11, drives the third connecting rod 343 to rotate forward, the second connecting rod 342 slides forward, and the first connecting rod 341 is turned over forward and upward to push the leg support 3 to turn over upward, so that the leg support 3 is tilted upward, and the included angle relative to the horizontal plane is reduced, as shown in Figures 36 to 38 .

[0135] When the seat mechanism 100 is in the lying state, the backrest 2 and the fixed seat 31 are unlocked, the backrest 2 is pushed upward, the backrest 2 rotates around the pivot a11, the second connecting part 33b pulls the seat 1 to move backward and downward, under the action of the guide groove 321, the seat 1 is turned to the expected angle, until the guide block 30 slides from the front end of the guide groove 321 to the corner part 321b, the seat mechanism 100 is in the zero-gravity state, and the conversion from the lying state to the zero-gravity state is realized. The conversion process from the lying state or the zero-gravity state to the sitting state is similar to the foregoing process, and the difference is that when the guide block 30 slides to the rear end of the guide groove 321, the seat mechanism 100 is in the sitting state. In the foregoing process, the backrest 2 drives the fourth linkage rod 344 to rotate around the pivot a11, the third linkage rod 343 is pulled to rotate backward, the second linkage rod 342 slides backward, and the first linkage rod 341 is turned backward to pull the leg support 3 to turn backward and downward, so that the leg support 3 falls, and the included angle with the horizontal plane increases, as shown in FIG. 8. Figures 36 to 38

[0136] The child seat mechanism 100 has the following advantages: the child seat mechanism 100 has multiple use states, and includes a zero-gravity state, in which the height of the heart and the knee of the occupant is basically the same, the occupant has the best comfort in this state, and the use is convenient, and the child in the child seat mechanism 100 has multiple postures; the backrest 2 can be operated to realize the conversion of the child seat mechanism 100 among the sitting state, the zero-gravity state and the lying state, and the conversion operation is convenient; in different use states, the angle of the leg support 3 can be automatically adjusted with the turning of the backrest 2, the corresponding support is provided for the calf, and the comfort of the occupant is further improved.

[0137] It can be understood that the same or similar parts in the above embodiments can be mutually referred to, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0138] Unless specifically defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. If there is a conflict between the definitions used in this text and the definitions in other public documents, the definitions used in this text shall prevail.

[0139] It should be further noted that the "rotary connection" in the above embodiments refers to the pivot connection, unless the context clearly indicates other rotary connection modes.

[0140] As shown in the specification and claims, the terms "comprise" and "include" only indicate the inclusion of the steps and elements explicitly identified, and these steps and elements do not constitute an exclusive list, and the method or device can also include other steps or elements.

[0141] ​It should be further understood that "multiple" in the present disclosure refers to two or more, and other quantifiers are similar. The association relationship between the associated objects described by "and / or" indicates that there can be three relationships, for example, A and / or B can represent three cases: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after it. The singular forms "a", "said" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0142] It should be further understood that the terms "first", "second", and the like are used to describe various information, but these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not represent a specific order or importance. In fact, the expressions "first", "second", and the like can be completely interchangeable. For example, the first information can also be referred to as the second information without departing from the scope of the present disclosure, and similarly, the second information can also be referred to as the first information.

[0143] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and are a preferred embodiment. The purpose is for those skilled in the art to understand the content of the present application and to implement it, and it cannot limit the protection scope of the present application.

Claims

1. A child seat mechanism, characterized in that, The seat defines a first plane for supporting thighs of an occupant, the backrest defines a second plane for supporting a back of the occupant, and the leg support defines a third plane for supporting shanks of the occupant; The child seat mechanism includes a plurality of use states, one of which is a zero-gravity state; in the zero-gravity state, the front of the seat is higher than the back, the first plane has a first included angle greater than zero with respect to the horizontal plane, the second plane has a second included angle greater than zero and less than 90 degrees with respect to the horizontal plane, and the third plane has a third included angle greater than zero and less than 90 degrees with respect to the horizontal plane, so that the heart and knees of the occupant are at the same height; The child seat mechanism further includes an angle adjustment device, a front end of the angle adjustment device being rotatably connected to the leg support, and a rear end of the angle adjustment device being rotatably connected to the backrest, so that the leg support is driven to rotate when the backrest rotates, thereby switching the child seat mechanism between the plurality of use states.

2. The child seat mechanism of claim 1, wherein, The first included angle is 18-40 degrees, the second included angle is 35-55 degrees, and the third included angle is 26-40 degrees.

3. The child seat mechanism of claim 2, wherein, The first included angle is 25-35 degrees, the second included angle is 40-50 degrees, and the third included angle is 28-35 degrees.

4. A child seat mechanism according to any one of claims 1 to 3, wherein, The plurality of use states further include a sitting state and a lying state, in both the sitting state and the lying state, the first plane has an included angle with respect to the horizontal plane that is less than the first included angle; during the transition from the sitting state to the lying state via the zero-gravity state, the second plane gradually decreases its included angle with respect to the horizontal plane, and the third plane gradually decreases its included angle with respect to the horizontal plane.

5. A child seat mechanism according to any one of claims 1 to 3, wherein The child seat mechanism includes a connecting seat, and the rear of the seat is rotatably connected to the connecting seat; The angle adjustment device includes: a backrest drive rod, the backrest being rotatably connected to the connecting seat via the backrest drive rod; a first drive rod having a first end rotatably connected to the backrest drive rod; a second drive rod having a first end rotatably connected to the connecting seat; a third drive rod having a first end rotatably connected to the seat; a fourth drive rod having a first end rotatably connected to the second drive rod or the third drive rod, and a second end rotatably connected to the leg support; wherein the second end of the first drive rod, the second end of the second drive rod, and the second end of the third drive rod are rotatably connected.

6. The child seat mechanism of claim 5, wherein, The second end of the fourth drive rod is rotatably and slidably connected to the leg support, so as to allow the lower end of the leg support and the backrest to approach each other when the child seat mechanism is folded; The backrest drive rod includes: an upper drive rod fixedly connected to the lower end of the backrest or integrated with the backrest, the upper drive rod being rotatably connected to the connecting seat; a lower driving rod having a first end rotatably connected to the connecting seat and / or the upper driving rod and a second end rotatably connected to the first end of the first driving rod; The child seat mechanism further comprises a backrest rod locking member having a locking state and an unlocking state, in the locking state the backrest rod locking member connects the upper driving rod and the lower driving rod, in the unlocking state the backrest rod locking member is disengaged from the upper driving rod and / or the lower driving rod to allow the upper driving rod to be flipped relative to the lower driving rod, so as to fold or unfold the child seat mechanism.

7. A child seat mechanism according to any one of claims 1 to 3, wherein The child seat mechanism comprises a base, the backrest is connected with a backrest connecting rod, the backrest connecting rod is rotatably connected to the base; The angle adjusting device comprises: a first push rod having a first end rotatably connected to the backrest connecting rod; a second push rod having a first end rotatably connected to a second end of the first push rod; a third push rod having a first end rotatably connected to a second end of the second push rod; wherein a second end of the third push rod is rotatably connected to the leg support; The second push rod is slidably arranged on the seat in the front-rear direction.

8. The child seat mechanism of claim 7, wherein, The child seat mechanism further has a folded state, in the folded state the backrest and the seat are close to each other; the leg support is provided with a long slot, the second end of the third push rod is provided with a connecting pin, the connecting pin is inserted into the long slot and can rotate and slide in the long slot, so as to make the leg support and the backrest close to each other after the child seat mechanism is folded; the seat is provided with a sliding sleeve, the second push rod can slide through the sliding sleeve in the front-rear direction.

9. A child seat mechanism according to any one of claims 1 to 3, wherein, The child seat mechanism comprises a fixed seat, the first connecting part of the backrest is rotatably connected to the fixed seat, the seat is slidably arranged on the fixed seat, the second connecting part of the backrest is rotatably connected to the seat, the second connecting part and the first connecting part are arranged in a spaced manner; The angle adjusting device comprises a first linkage rod connected to the leg support, a second linkage rod slidably connected to the seat in the front-rear direction, and a third linkage rod rotatably connected to the backrest, the front ends of the first linkage rod and the second linkage rod are rotatably connected, the rear end of the second linkage rod and the third linkage rod are rotatably connected.

10. A carrier, characterized by A seat mechanism comprising any one of claims 1 to 9. A seat mechanism comprising any one of claims 1 to 9.

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