Child seat mechanism and carrier

Abstract

The invention 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, switching is convenient, and excellent comfort is achieved in the zero-gravity state.

Description

Technical Field

[0001] The present invention relates to a child seat mechanism and a carrier, such as a child stroller. Background Art

[0002] Child seat mechanisms are essential components of child carriers, such as strollers and car seats. A typical seat mechanism consists of a seat and a backrest. The seat supports the child's buttocks and thighs, while the backrest supports the child's back. To improve user comfort, some seat mechanisms offer adjustable angles between the seat and backrest, allowing the seat mechanism to transition between various positions, such as sitting, semi-reclining, and lying. Some seat mechanisms also include leg supports (such as footrests or leg bars) to support the occupant's lower legs. The angle between the backrest and seat varies for each position, allowing the occupant to use the seat mechanism in a sitting, semi-reclining, or lying position. If the leg support angle could be adjusted accordingly and automatically shift to a comfortable angle for the semi-reclining position with the backrest, it would significantly improve the comfort and ease of transitions in the semi-reclining position.

[0003] The above information disclosed in this Background section is only for enhancement of understanding of the background of the application and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Summary of the Invention

[0004] The present invention relates to a child seat mechanism and a carrier. The angle of a leg support can be adjusted by rotating a backrest, thereby switching to a zero-gravity state. The conversion is convenient and the zero-gravity state provides excellent comfort.

[0005] The present invention adopts the following technical solutions:

[0006] A child seat mechanism includes a seat, a backrest that can rotate relative to the seat, and a leg support that can rotate relative to the seat, wherein 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, and the leg support defines a third plane for supporting the calves of the occupant;

[0007] 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 portion of the seat is higher than the rear portion thereof, the first plane has a first angle greater than zero relative to the horizontal plane, the second plane has a second angle greater than zero and less than 90 degrees relative to the horizontal plane, and the third plane has a third 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 also includes an angle adjustment device, a front end of the angle adjustment device is rotatably connected to the leg support, and a rear end of the angle adjustment device is rotatably connected to the backrest, so that when the backrest rotates, the leg support is driven to rotate to convert the child seat mechanism between multiple usage states.

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

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

[0011] In a preferred embodiment, the multiple usage states also include a sitting state and a lying state. In the sitting state and the lying state, the angle of the first plane relative to the horizontal plane is smaller than the first angle; in the process of converting from the sitting state to the lying state through the zero gravity state, the angle of the second plane relative to the horizontal plane gradually decreases, and the angle of the third plane relative to the horizontal plane gradually decreases.

[0012] In a preferred embodiment, the child seat mechanism includes a connecting seat, and the rear portion of the seat is rotatably connected to the connecting seat; the angle adjustment device includes:

[0013] a backrest drive rod, through which the backrest is rotatably connected to the connecting seat;

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

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

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

[0017] 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;

[0018] The second end of the first driving rod, the second end of the second driving rod and the 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 to allow the lower end of the leg support and the backrest to move closer to each other after the child seat mechanism is folded;

[0020] The backrest drive rod includes:

[0021] an upper driving rod, which is fixedly connected to the lower end of the backrest or is integral with the backrest, and the upper driving rod is 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 the first end of the first driving rod;

[0023] The child seat mechanism also includes a locking member, and the backrest rod locking member has a locked state and an unlocked state. In the locked state, the backrest rod locking member connects the upper drive rod and the lower drive rod. In the unlocked state, the backrest rod locking member is disengaged from the upper drive rod and / or the lower drive rod to allow the upper drive rod to flip relative to the lower drive rod, thereby folding or unfolding the child seat mechanism.

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

[0025] The angle adjustment device comprises:

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

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

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

[0029] Wherein, the second end portion of the third push rod is rotatably connected to the leg support member;

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

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

[0032] In a preferred embodiment, the child seat mechanism includes a fixed seat, the first connecting portion of the backrest is rotatably connected to the fixed seat, the seat is slidably arranged on the fixed seat, the second connecting portion of the backrest is rotatably connected to the seat, and the second connecting portion is spaced apart from the first connecting portion;

[0033] The angle adjustment device includes 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, and the rear end of the second linkage rod is rotatably connected to the third linkage rod.

[0034] The present invention also adopts the following technical solutions:

[0035] A vehicle comprises the seat mechanism.

[0036] The present invention adopts the above scheme and has the following advantages:

[0037] The seat mechanism of the present invention has a zero-gravity state. The backrest and the leg support are linked by an angle adjustment device. The backrest is operated to automatically flip the leg support to a desired angle, that is, the backrest can be operated to switch to a zero-gravity state. In this zero-gravity state, the height of the passenger's heart and knees are basically the same. In this posture, the passenger has optimal comfort, and the state conversion operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 FIG1 is a side view of a seat mechanism according to embodiment 1 of the present invention in a sitting position.

[0040] Figure 2 FIG1 is a side view of a seat mechanism according to embodiment 1 of the present invention in a zero gravity state.

[0041] Figure 3 FIG1 is a side view of a seat mechanism according to embodiment 1 of the present invention in a lying position.

[0042] Figure 4 1 is a three-dimensional diagram of a seat mechanism in a sitting position according to embodiment 1 of the present invention.

[0043] Figure 5This is a three-dimensional diagram of a seat mechanism according to embodiment 1 of the present invention in a zero-gravity state.

[0044] Figure 6 3D is a three-dimensional diagram of a seat mechanism according to embodiment 1 of the present invention in a lying position.

[0045] Figure 7 Schematic diagram of a backrest and an upper drive rod of a seat mechanism according to embodiment 1 of the present invention.

[0046] Figure 8 Schematic diagram of a connecting seat and a lower driving rod of a seat mechanism according to embodiment 1 of the present invention.

[0047] Figure 9 1 is a side view of a seat mechanism according to embodiment 1 of the present invention during folding.

[0048] Figure 10 FIG1 is a side view of a seat mechanism according to embodiment 1 of the present invention in a folded state.

[0049] Figure 11 3D is a perspective view of a carrier according to embodiment 1 of the present invention.

[0050] Figure 12 FIG. 1 is a side view of a vehicle according to embodiment 1 of the present invention, wherein the seat mechanism is in a sitting position.

[0051] Figure 13 FIG. 1 is a side view of a vehicle according to embodiment 1 of the present invention, wherein the seat mechanism is in a zero-gravity state.

[0052] Figure 14 It is a side view of a vehicle according to embodiment 1 of the present invention, wherein the seat mechanism is in a lying position.

[0053] Figure 15 This is a three-dimensional diagram of a seat mechanism in a sitting position according to embodiment 2 of the present invention.

[0054] Figure 16 This is an exploded view of the seat, one side base and backrest connecting rod according to embodiment 2 of the present invention.

[0055] Figure 17 2 is a structural diagram of a backrest and a second locking member according to embodiment 2 of the present invention.

[0056] Figure 18 This is a three-dimensional diagram of a seat mechanism according to embodiment 2 of the present invention in a zero-gravity state.

[0057] Figure 19 FIG1 is a side view of a seat mechanism according to embodiment 2 of the present invention in a sitting position.

[0058] Figure 20 FIG1 is a side view of a seat mechanism according to embodiment 2 of the present invention in a zero-gravity state.

[0059] Figure 21 FIG1 is a side view of a seat mechanism according to embodiment 2 of the present invention in a lying position.

[0060] Figure 22 FIG1 is a side view of a seat mechanism in a folded state according to embodiment 2 of the present invention.

[0061] Figure 23 3D is a perspective view of a carrier according to embodiment 2 of the present invention.

[0062] Figure 24 FIG. 1 is a side view of a vehicle according to embodiment 2 of the present invention, wherein the seat mechanism is in a sitting position.

[0063] Figure 25 FIG. 1 is a side view of a vehicle according to embodiment 2 of the present invention, wherein the seat mechanism is in a zero-gravity state.

[0064] Figure 26 It is a side view of a vehicle according to embodiment 2 of the present invention, wherein the seat mechanism is in a lying position.

[0065] Figure 27 This is a three-dimensional diagram of a seat mechanism in a sitting state according to embodiment 3 of the present invention.

[0066] Figure 28 This is a three-dimensional diagram of a seat mechanism according to embodiment 3 of the present invention in a zero-gravity state.

[0067] Figure 29 This is a three-dimensional diagram of a seat mechanism in a lying position according to embodiment 3 of the present invention.

[0068] Figure 30 FIG1 is a side view of a seat mechanism according to embodiment 3 of the present invention in a zero gravity state.

[0069] Figure 31 Schematic diagram of a seat mechanism in a zero-gravity state according to embodiment 3 of the present invention.

[0070] Figure 32 This is an exploded view of a seat mechanism according to embodiment 3 of the present invention in a zero-gravity state.

[0071] Figure 33 Schematic diagram of the positions of a seat and guide blocks according to embodiment 3 of the present invention, wherein the seat mechanism is in a sitting position.

[0072] Figure 34Schematic diagram of the positions of a seat and guide blocks according to embodiment 3 of the present invention, wherein the seat mechanism is in a zero-gravity state.

[0073] Figure 35 Schematic diagram of the positions of a seat and guide blocks according to embodiment 3 of the present invention, wherein the seat mechanism is in a lying position.

[0074] Figures 36 to 38 These are schematic diagrams of a seat mechanism according to embodiment 3 of the present invention 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 figures,

[0076] 100. Child seat mechanism; 200. Child stroller; 201. Frame;

[0077] 1. Seat; 2. Backrest; 3. Leg support; 3a. Long slot; 4. Angle adjustment device;

[0078] 11. Connecting seat; 111. First locking hole; 112. Second locking hole; 113. Third locking hole; 12. Seat rod; 13. Backrest drive rod; 131. Upper drive rod; 132. Lower drive rod; 132a. Fourth locking hole; 133. Positioning hole; 14. First drive rod; 15. Second drive rod; 16. Third drive rod; 17. First locking member; 18. Backrest rod locking member; 19. Fourth drive rod; 19a. Connecting pin;

[0079] 21. Base; 211. First locking slot; 212. Second locking slot; 213. Third locking slot; 22. Seat rod; 221. Track slot; 221a. Front end; 221b. Corner portion; 221c. Rear end; 222. Sliding sleeve; 23. Backrest connecting rod; 231. Adjustment pin; 232. Sliding slot; 24. Second locking member; 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 adjustment device; 341. First linkage rod; 342. Second linkage rod; 343. Third linkage rod; 344. Fourth linkage rod; 345. First limiting groove; 346. Second limiting groove; 35. Rotational joint. DETAILED DESCRIPTION

[0081] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings to make the advantages and features of the present invention more easily understood by those skilled in the art. It should be noted that the description of these embodiments is intended to facilitate understanding of the present invention and does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0082] In this document, the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings when the child seat mechanism is in a sitting state. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on this application.

[0083] Figures 1 to 38 The figures are drawn in true proportion. To keep the description concise, the proportions of each component are not listed one by one. However, the proportions and positions of each component should be considered as part of the content of this description.

[0084] Example 1

[0085] This embodiment provides a child seat mechanism and a carrier, which is used to carry children and can be a child stroller, a car safety seat, etc.

[0086] Reference Figures 1 to 10 As shown, the child seat mechanism 100 mainly includes a seat 1 and a backrest 2, wherein the seat 1 defines a first plane P1 for supporting the thighs of the passenger, and the backrest 2 defines a second plane P2 for supporting the back of the passenger. 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 (such as Figure 1 As shown), lying state (as shown Figure 3 as shown) and the zero gravity state between the sitting state and the lying state (as shown Figure 2 As shown). In different usage states, the angle between the seat 1 and the backrest 2 (i.e., the angle between the first plane P1 and the second plane P2) is different to accommodate different postures of the occupant; specifically, in the zero-gravity state, the angle between the first plane P1 and the second plane P2 is greater than the angle between the first plane P1 and the second plane P2 in the sitting state and smaller than the angle between the first plane P1 and the second plane P2 in the lying state. Figure 2As shown, in a zero-gravity state, the front of seat 1 is higher than the 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, so that the passenger's heart (position H1) and knees (position H2) are at the same height, providing optimal passenger comfort in this state. Both the first angle α1 and the second angle α2 are less than 90 degrees. The first angle α1 is between 18 and 40 degrees, preferably between 25 and 35 degrees. The second angle α2 is between 35 and 55 degrees, preferably between 40 and 50 degrees.

[0087] like Figure 1 As shown, in the sitting position, the angle between the first plane P1 and the horizontal plane is smaller than the first angle α1, and the angle between the second plane P2 and the horizontal plane is larger than the second angle α2. That is, in the sitting position, the seat 1 is generally horizontal, or tilted at a small angle (smaller 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 reclining 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 reclining position, the seat 1 is generally horizontal, or tilted at a small angle (less than the first angle α1, which may 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 may be between 0 and 20 degrees).

[0088] Furthermore, the child seat mechanism 100 includes a leg support 3, which can rotate relative to the seat 1, so as to have corresponding 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 in the front side of the seat 1 and defines a third plane P3 for supporting the calf of the passenger. When the child seat mechanism 100 is 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 angle α3 greater than zero relative to the horizontal plane. The third angle α3 is 26 to 40 degrees, preferably 28 to 35 degrees. Figure 2 In the specific example shown, the first angle α1 is 30 degrees, the second angle α2 is 45 degrees, and the third angle α3 is 31 degrees; the angle between the first plane P1 where the seat 1 is located and the second plane P2 where the backrest 2 is located is approximately 105 degrees.

[0089] In by Figure 1 The sitting posture shown is converted into Figure 2 The zero gravity state shown and Figure 3In the lying state shown, the first angle α1 first increases and then decreases, the second angle α2 decreases successively, and the third angle α3 gradually decreases. The angle between the first plane P1 where the seat 1 is located and the second plane P2 where the backrest 2 is located increases successively.

[0090] Furthermore, the child seat mechanism 100 also has a folded state, in which the backrest 2 and the seat 1 are brought closer together. After the child seat mechanism 100 is unfolded, it can be converted into any use state, such as Figure 1 The sitting posture shown, Figure 2 The zero gravity state shown, Figure 3 Lying position shown.

[0091] 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 of which is connected 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 of this embodiment are described in detail below.

[0092] The child seat mechanism 100 includes a connecting seat 11, which fixes the child seat mechanism 100 to the supporting part of the vehicle (such as the frame of a stroller, the base of a car safety seat, etc.) or has an interface connected to the supporting part of the vehicle. The rear part of the seat 1 is rotatably connected to the connecting seat 11; in this embodiment, the seat 1 includes two seat rods 12 extending forward and backward, and specifically, the rear end of the seat rod 12 is pivotally connected to the connecting seat 11. The above-mentioned angle adjustment device 4 includes a backrest drive rod 13, a first drive rod 14, a second drive rod 15 and a third drive rod 16. The backrest 2 is rotatably connected to the connecting seat 11 through the backrest drive rod 13, and the upper part of the backrest drive rod 13 is fixedly connected to the backrest 2 or is integrated. The first end of the first drive rod 14 is rotatably connected to the backrest drive rod 13, the first end of the second drive rod 15 is rotatably connected to the connecting seat 11, and the first end of the third drive rod 16 is rotatably connected to the seat post 12 of the seat 1. The second ends of the first drive rod 14, the second end of the second drive rod 15, and the second end of the third drive rod 16 are rotatably connected. In this embodiment, the above-mentioned drive rods are pivotally connected to each other, and the second ends of the first drive rod 14, the second end of the second drive rod 15, and the second end of the third drive rod 16 are pivotally connected. Among them, a four-bar linkage is formed between the seat post 12, the backrest drive rod 13, the first drive rod 14, and the third drive rod 16. When the backrest 2 is pressed and the backrest drive rod 13 flips, the four-bar linkage deforms. At the same time, the second drive rod 15 connected to the connecting seat 11 limits the position, and the seat 1 can change its angle as the backrest 2 flips within a set angle range, thereby achieving posture conversion.

[0093] The angle adjustment device 4 further 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 components among the connecting base 11, the backrest drive rod 13, the first drive rod 14, the second drive rod 15, the third drive rod 16, and the connecting base 11 to lock the angle adjustment device 4 and stabilize the child seat mechanism 100 in the sitting state, the zero-gravity state, or the lying state. In the unlocked state, the first locking member 17 disengages from the 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] Further, combined with 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 the upper drive rod 131 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 lock 18 has a locked state and an unlocked state. In the locked state, the backrest rod lock 18 connects the upper drive rod 131 and the lower drive rod 132. In the unlocked state, the backrest rod lock 18 disengages from the upper drive rod 131 and / or the lower drive rod 132, allowing 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 be noted that in the locked state, the backrest rod lock 18 is offset from the rotational connection point between 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 driving rod 132 of the backrest driving rod 13 and the connecting seat 11 to lock the backrest driving rod 13 and the connecting seat 11. The backrest driving rod 13 cannot flip relative to the connecting seat 11, thereby stabilizing the child seat mechanism 100 in a sitting state, a zero-gravity state, or a lying state. In the unlocked state, the first locking member 17 disengages from the lower driving rod 132 and / or the connecting seat 11, and the two can rotate relative to each other. The seat 1 driving mechanism is released, thereby allowing the above-mentioned four-bar linkage to deform, and the seat 1 and the backrest 2 can rotate relative to each other. Figures 1 to 10 In the specific example shown, the first locking member 17 comprises a locking pin; 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 rotate along the arc path of the lower driving rod 132 relative to the connecting seat 11 ( Figure 8 The upper drive rod 131 is arranged in sequence (as shown by the circular path in the middle dashed line), and the lower drive rod 132 is provided with a fourth locking hole 132a. When the child seat mechanism 100 is in the sitting position, the fourth locking hole 132a is aligned with and connected to the first locking hole 111, and 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 the sitting position. Figure 4 When the child seat mechanism 100 is in a zero-gravity state, the fourth locking hole 132a is aligned with and connected to the second locking hole 112, and the first locking member 17 is inserted into the fourth locking hole 132a and the second locking hole 112 to lock the upper driving rod 131 relative to the connecting seat 11, thereby locking the child seat mechanism 100 in a zero-gravity state. Figure 5 When the child seat mechanism 100 is in the lying position, the fourth locking hole 132a and the third locking hole 113 are aligned and connected, and the first locking member 17 is inserted into the fourth locking hole 132a and the third locking hole 113 to lock the upper driving rod 131 relative to the connecting seat 11, thereby locking the child seat mechanism 100 in the lying position, as shown. Figure 6 shown.

[0096] like Figure 7 and Figure 8 As shown, the backrest rod locking member 18 includes a stop pin. A stop hole 133 is provided on each of the upper and lower drive rods 131, 132. When the stop holes 133 on the upper and lower drive rods 131, 132 are aligned and connected, the backrest rod locking member 18 is inserted into the two stop holes 133, locking the upper and lower drive rods 131, 132 together and preventing relative rotation. The child seat mechanism 100 can now be used in any configuration. Furthermore, when the backrest rod locking member 18 locks the upper and lower drive rods 131, 132, the centerlines of the upper and lower drive rods 131, 132 are preferably collinear or parallel. To fold the child seat mechanism 100, the backrest rod locking member 18 is removed from the stop holes 133 on the upper and / or lower drive rods 131, 132, unlocking the upper and lower drive rods 131, 132 and enabling relative rotation.

[0097] The angle adjustment device 4 further includes a fourth driving rod 19, a first end of the fourth driving rod 19 being rotatably connected to the second driving rod 15 or the third driving rod 16, and a second end of the fourth driving rod 19 being 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 and second ends of the third driving rod 16. When the four-bar linkage of the angle adjustment device 4 is deformed, the fourth driving rod 19 flips over, pushing the leg support 3 to flip upward relative to the seat post 12.

[0098] Furthermore, the second end of the fourth driving rod 19 can also slide relative to the leg support 3 to allow the lower end of the leg support 3 and the backrest 2 to move closer to each other after the child seat mechanism 100 is folded. Figure 9 and Figure 10 As shown. Specifically, the leg support 3 is provided with a long slot 3a, which extends along the center line of the leg support 3. A connecting pin 19a is provided on the second end of the fourth driving rod 19. The connecting pin 19a is inserted into the long slot 3a and is configured to be able to rotate in the long slot 3a and slide along the long slot 3a. When the child seat mechanism 100 is converted from the sitting state to the folded state, the connecting pin 19a first slides from the lower end of the long slot 3a to its upper end, as shown in FIG. Figure 9 Subsequently, the leg support member 3 is flipped upward so that it and the backrest 2 are further brought closer to each other, reducing the thickness of the child seat mechanism 100 after folding. During this process, the connecting pin 19a slides forward from the upper end of the long slot 3a to its lower end, and the upper end of the long slot 3a can be substantially flush with its lower end.

[0099] This embodiment also provides a carrier 200, which can be Figures 11 to 14 Stroller shown. Figures 11 to 14 As shown, the stroller includes a frame 201 and wheels disposed at the bottom of the frame 201. The frame 201 has an interface, and the connecting seat 11 of the child seat mechanism 100 can be removably or fixedly connected to the interface. The frame 201 has an unfolded state and a folded state. The child seat mechanism 100 can be unfolded and folded on the frame 201, and after unfolding, it has three usage states: sitting position, zero gravity position, and lying position, as shown in FIG. Figure 12 、 Figure 13 and Figure 14 shown.

[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 sitting state, the backrest rod locking member 18 is kept in its locked state, and the first locking member 17 is pulled out from the second locking hole 112 of the lower driving rod 132 and / or the first locking hole 111 of the connecting seat 11 to unlock the angle adjustment device 4; the backrest 2 is pressed downward, the four-bar mechanism of the angle adjustment device 4 is deformed, and the seat rod 12 is flipped over, and its front part is lifted upward. At the same time, the fourth driving rod 19 pushes the leg support member 3 to flip upward; until the fourth locking hole 132a on the lower driving rod 132 moves to be aligned with the second locking hole 112 of the connecting seat 11, the first locking member 17 is inserted into the fourth locking hole 132a and the second locking hole 112, and the child seat mechanism 100 is locked in the zero gravity state, realizing the transition from the sitting state to the zero gravity state. The transition process from the sitting state or the zero gravity state to the lying state is similar to the above process, except that after the fourth locking hole 132a and the third locking hole 113 on the connecting seat 11 are aligned, the first locking member 17 is inserted into the fourth locking hole 132a and the third locking hole 113.

[0102] When the child seat mechanism 100 is in the lying state, the backrest rod locking member 18 is kept in its locked state, and the first locking member 17 is pulled out from the second locking hole 112 of the lower driving rod 132 and / or the third locking hole 113 of the connecting seat 11 to unlock the angle adjustment device 4; the backrest 2 is pushed upward, the four-bar mechanism of the angle adjustment device 4 is deformed, and the seat rod 12 flips accordingly, and its front part flips downward. At the same time, the fourth driving rod 19 pulls the leg support member 3 to flip downward; until the fourth locking hole 132a on the lower driving rod 132 moves to align with the second locking hole 112 of the connecting seat 11, the first locking member 17 is inserted into the fourth locking hole 132a and the second locking hole 112, and the child seat mechanism 100 is locked in the zero-gravity state, realizing the transition from the lying state to the zero-gravity state. The transition process from the lying state or the zero gravity state to the sitting state is similar to the above process, except that after the fourth lock hole 132a and the first lock hole 111 on the connecting seat 11 are aligned, the first locking member 17 is inserted into the fourth lock hole 132a and the first lock hole 111.

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

[0104] Put the child seat mechanism 100 in a sitting position, pull out the backrest rod locking member 18 from the limiting hole 133 of the upper driving rod 131 and / or the lower driving rod 132, unlock the backrest driving rod 13, and push the backrest 2 forward to move it closer to the seat 1 until the child seat mechanism 100 is in a sitting position. Figure 9 The leg support 3 is turned upwards so that the lower end thereof is brought close to the backrest 2, and finally the leg support 3 is turned upwards so that the lower end thereof is brought close to the backrest 2. Figure 10 Shown in folded state.

[0105] The child seat mechanism 100 has the following advantages: the child seat mechanism 100 has multiple usage states, including a zero-gravity state. In this zero-gravity state, the heights of the passenger's heart and knees are basically the same. In this posture, the passenger has optimal comfort and is easy to use, allowing the child in the child seat mechanism 100 to have multiple postures; by operating the backrest 2, the child seat mechanism 100 can be converted between multiple usage states such as sitting, zero-gravity and lying, and the conversion operation is convenient; in different usage states, the angle of the leg support 3 also automatically changes accordingly, providing corresponding support for the calf, further helping to improve riding comfort and ease of use.

[0106] Example 2

[0107] This embodiment provides a Figures 15 to 22 The child seat mechanism 100 and a carrier are shown, which are used to carry children and can be a child stroller, a car safety seat, etc. The carrier 200 can be Figures 23 to 26 The stroller shown.

[0108] Reference Figures 15 to 22 As shown, similar to the embodiment 1, the 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 passenger's thighs, and the backrest 2 defines a second plane P2 for supporting the passenger's back. The leg support 3 is located on the front side of the seat 1 and defines a third plane P3 for supporting the passenger's calves. Figure 20 The seat 1 and the 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 use states, including a sitting state (such as Figure 19 As shown), lying state (as shown Figure 21 as shown) and the zero gravity state between the sitting state and the lying state (as shown Figure 20 As shown). Figure 20 As shown, in the zero gravity state, the front end of the seat 1 is higher than the rear end thereof, 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, so that the heart (H1 position) and knees (H2 position) of the passenger are at the same height. In this state, the passenger has the best comfort. The first angle α1, the second angle α2, and the third angle α3 are all less than 90 degrees. The first angle α1 is 18 to 40 degrees, preferably 25 to 35 degrees. The second angle α2 is 35 to 55 degrees, preferably 40 to 50 degrees. The third angle α3 is 26 to 40 degrees, preferably 28 to 35 degrees. In Figure 20In the specific example shown, the first angle α1 is 30 degrees, the second angle α2 is 45 degrees, and the third angle α3 is 31 degrees; the angle between the first plane P1 where the seat 1 is located and the second plane P2 where the backrest 2 is located is approximately 105 degrees.

[0109] In by Figure 19 The sitting posture shown is converted into Figure 20 The zero gravity state shown and Figure 21 In the lying state shown, the first angle α1 first increases and then decreases, the second angle α2 decreases successively, the third angle α3 decreases successively, and the angle between the first plane P1 where the seat 1 is located and the second plane P2 where the backrest 2 is located 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 of which is connected 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 of this embodiment are described in detail below.

[0111] The child seat mechanism 100 includes a base 21, which is a part of a support portion of a vehicle 200 (e.g., a stroller frame 201, a car seat base, etc.) or is detachably connected to the support portion of the vehicle 200 so as to mount the child seat mechanism 100 on 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 a pivot a1. The angle adjustment device 4 includes a backrest link 23. 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 rod 25. The backrest link 23 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 a 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, the seat rod 22 is driven to rotate, thereby converting the child seat mechanism 100 into a usable state. Figure 16 、 Figures 19 to 21As shown, the seat post 22 is provided with a track groove 221, and the backrest link 23 is provided with an adjustment pin 231. The adjustment pin 231 is slidably inserted into the track groove 221. The seat post 22 and the backrest link 23 are rotatably and slidably connected solely by the adjustment pin 231. When the backrest 2 rotates, the adjustment pin 231 slides along the track groove 221, thereby allowing the backrest 2 and the seat 1 to rotate relative to each other. It should also be noted that the pivot a1, pivot a2, and adjustment pin 231 are arranged in a triangular shape on the base 21. When the backrest link 23 rotates, the backrest link 23 performs a circular motion around the pivot a2, and the adjustment pin 231 slides along the track groove 221, driving the seat post 22 to perform a circular motion around the pivot a1. The seat post 22 then tilts relative to the base 21, thereby changing the angle of the seat post 22 relative to the horizontal plane.

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

[0113] The angle adjustment device 4 also includes a second locking member 24. In the locked state, the second locking member 24 is disposed on the base 21 and the backrest link 23, thereby locking the backrest link 23 relative to the base 21. In the unlocked state, the second locking member 24 releases the backrest link 23 from the base 21, allowing the backrest link 23 to rotate relative to the base 21. In other embodiments, the second locking member 24 may also be disposed on the base 21 and the seat post 22 in the locked state, and release the base 21 and the seat post 22 in the unlocked state. Specifically, in the example shown in the drawings, the second locking member 24 comprises a sliding pin and is slidably disposed on the backrest link 23. Specifically, the backrest link 23 is provided with a sliding groove 232 extending along its length, into which the second locking member 24 is slidably inserted. The base 21 is provided with a plurality of locking grooves arranged in sequence along the outer circumference of the base 21. When the child seat mechanism 100 is in any use state, the second locking member 24 is inserted into the slide groove 232 and one of the locking grooves. When the second locking member 24 and the locking groove are disengaged, the child seat mechanism 100 can be switched to a different use state. Figure 16As shown, the outer circumference of the base 21 is provided with a first locking groove 211, a second locking groove 212, and a third locking groove 213. The first locking groove 211, the second locking groove 212, and the third locking groove 213 extend inward from the outer circumference 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 with each other. After the child seat mechanism 100 is unfolded, no matter what use state it is in or during the conversion process between different use 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, and the second locking member 24 and the backrest link 23 are disengaged, allowing the backrest rod 25 to flip forward relative to the backrest link 23 to move closer to the seat 1. The second locking member 24 is installed on the backrest rod 25 and can slide relative to the backrest rod 25. Specifically, as Figure 17 As shown, the backrest rod 25 is provided with a mounting groove 251 extending along its length, and the second locking member 24 is slidably arranged 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 connecting rod 23 and is U-shaped as a whole. Figures 19 to 21 In any of the use states shown or during the transition between different use states, the second locking member 24 will not disengage from the slide 232. When the child seat mechanism 100 needs to be folded, as shown in FIG. Figure 22 As shown, the second locking member 24 is moved upward to disengage 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 to achieve folding.

[0115] The upper end of the leg support 3 is pivotally connected to the front portion 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 pivotally connected to the backrest link 23. The first end of the second push rod 27 is pivotally connected to the second end of the first push rod 26. The first end of the third push rod 28 is pivotally connected to the second end of the second push rod 27. The second end of the third push rod 28 is pivotally connected to the leg support 3. When the backrest link 23 rotates, the first push rod 26 rotates accordingly, and the second and third push rods 27 and 28 push the leg support 3 to tilt and change its angle. The second push rod 27 is slidably mounted on the seat 1 in the fore-aft direction. Specifically, a sliding sleeve 222 is provided on the seat post 22, through which the second push rod 27 slides.

[0116] Furthermore, the second end of the third push rod 28 can slide relative to the leg support 3 to allow the lower end of the leg support 3 and the backrest 2 to move closer to each other after the child seat mechanism 100 is folded. Figure 22 As shown. Specifically, the leg support 3 is provided with a long slot 3a, which extends along the center line of the leg support 3. A connecting pin 281 is provided on the second end of the third push rod 28. The connecting pin 281 is inserted into the long slot 3a and is configured to be able to rotate in the long slot 3a and slide along the long slot 3a. When the child seat mechanism 100 is converted from the sitting state to the folded state, the connecting pin 281 slides from the lower end of the long slot 3a to its upper end, as shown in FIG. Figure 22 shown.

[0117] This embodiment also provides a carrier 200, which can be Figures 23 to 26 Stroller shown. Figures 23 to 26 As shown, the child stroller includes a frame 201 and wheels disposed at the bottom of the frame 201. 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, it can be a part of the rotating joint of the frame 201. The frame 201 has an unfolded state and a folded state. The child seat mechanism 100 can be unfolded and folded on the frame 201, and after unfolding, it has three usage states: sitting position, zero gravity position, and lying position, as shown in FIG. Figure 24 、 Figure 25 and Figure 26 shown.

[0118] The process of converting 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 member 24 is inserted into the mounting groove 251, the slide groove 232 and the first locking groove 211 to lock the child seat mechanism 100 in the sitting position; when the second locking member 24 is moved upward, it is disengaged from the first locking groove 211 and moves along the outer peripheral surface of the base 21 between the first locking groove 211 and the second locking groove 212. During this process, the second locking member 24 is still in the slide groove 232 and the mounting groove 251; then, the backrest 2 is pressed downward, and the backrest connecting rod 23 is relatively The base 21 rotates upward, driving the adjustment pin 231 to slide from the rear end of the track groove 221 to the corner of the track groove 221. The seat post 22 then rotates around the base 21, lifting its front side upward. Simultaneously, the first push rod 26, the second push rod 27, and the third push rod 28 cooperate to push the leg support 3 upward. This continues until the second locking member 24 slides above the second locking slot 212 and falls into the second locking slot 212, locking the child seat mechanism 100 in the zero-gravity state and achieving the transition from the sitting position to the zero-gravity state. The transition process from the sitting position or the zero-gravity state to the reclining position is similar to the above process, except that the second locking member 24 slides above the third locking slot 213 and falls into the third locking slot 213, locking the child seat mechanism 100 in the reclining position.

[0120] When the child seat mechanism 100 is in the lying state, the second locking member 24 is inserted into the mounting groove 251, the slide groove 232 and the third locking groove 213 to lock the child seat mechanism 100 in the lying state; when the second locking member 24 is moved upward, it is disengaged from the third locking groove 213 and moves along the outer peripheral surface of the base 21 between the third locking groove 213 and the second locking groove 212. During this process, the second locking member 24 is still in the slide groove 232 and the mounting groove 251; then, the backrest 2 is pushed upward, and the backrest connecting rod 23 is relatively The base 21 rotates downward, driving the adjustment pin 231 to slide from the front end of the track groove 221 to the corner of the track groove 221. The seat post 22 then rotates around the base 21, tilting its front side downward. Simultaneously, the first push rod 26, the second push rod 27, and the third push rod 28 cooperate to push the leg support 3 downward. This continues until the second locking member 24 slides above the second locking slot 212 and falls into the second locking slot 212, locking the child seat mechanism 100 in the zero-gravity state and achieving the transition from the reclining state to the zero-gravity state. The transition process from the reclining state or the zero-gravity state to the sitting state is similar to the above process, except that the second locking member 24 slides above the first locking slot 211 and falls into the first locking slot 211, locking the child seat mechanism 100 in the sitting state.

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

[0122] Put the child seat mechanism 100 in a sitting position, move the second locking member 24 upwards to disengage the second locking member 24 from the slide slot 232, unlock the backrest rod 25 and the backrest connecting rod 23, push the backrest rod 25 forward to move it closer to the seat 1, and switch to Figure 22 Shown in folded state.

[0123] The child seat mechanism 100 has the following advantages: the child seat mechanism 100 has multiple usage states, including a zero-gravity state. In this zero-gravity state, the heights of the passenger's heart and knees are basically the same. In this posture, the passenger has optimal comfort and is easy to use, allowing the child in the child seat mechanism 100 to have multiple postures; by operating the backrest 2, the child seat mechanism 100 can be converted between multiple usage states such as sitting, zero-gravity and lying, and the conversion operation is convenient; in different usage states, the angle of the leg support 3 also automatically changes accordingly, providing corresponding support for the calf, further helping to improve riding comfort and ease of use.

[0124] Example 3

[0125] This embodiment provides a Figures 27 to 38 The child seat mechanism 100 and a carrier are shown. The carrier is used to carry children and can be a child stroller, a car safety seat, etc.

[0126] Reference Figures 27 to 38 As shown, similar to the first embodiment, 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, which defines a first plane P1 for supporting the passenger's thighs; the backrest 2 includes a backrest 2 plate, which defines a second plane P2 for supporting the passenger's back. The leg support 3 is located at the front side of the seat 1 and includes a leg plate, which defines a third plane P3 for supporting the passenger's calves. Figure 30 The seat 1 and the 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 use states, including a sitting state (such as Figure 27 As shown), lying state (as shown Figure 29 as shown) and the zero gravity state between the sitting state and the lying state (as shown Figure 28 As shown). Figure 28As 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 ensures that the passenger's heart (position H1) and knees (position H2) are at the same height, providing optimal passenger comfort. The first angle α1 is 18 to 40 degrees, the second angle α2 is 35 to 55 degrees, and the third angle α3 is 26 to 40 degrees.

[0127] like Figure 27 As shown, in the sitting state, the angle between the first plane P1 and the horizontal plane is smaller than the first angle α1, the angle between the second plane P2 and the horizontal plane is larger than the second angle α2, and the angle between the third plane P3 and the horizontal plane is larger than the third angle α3. Figure 29 As shown, in the lying state, the angle between the first plane P1 and the horizontal plane is smaller than the first angle α1, the angle between the second plane P2 and the horizontal plane is smaller than the second angle α2, and the angle between the third plane P3 and the horizontal plane is smaller than the third angle α3.

[0128] The child seat mechanism 100 includes a fixing base 31, which is used to fix the child seat mechanism 100 on a supporting portion of a vehicle (such as a stroller frame, a car safety seat base, etc.). Figure 32 As shown, the lower end portion of the backrest 2 has a first connecting portion 33a and a second connecting portion 33b spaced apart from each other. Figures 30 to 32 The first connecting portion 33a of the backrest 2 is rotatably connected to the fixed seat 31; specifically, the first connecting portion 33a is rotatably connected to the fixed seat 31 via a pivot a11. The second connecting portion 33b of the backrest 2 is rotatably connected to the seat 1; specifically, the second connecting portion 33b is rotatably connected to the seat 1 via a pivot a12. The seat 1 is slidably mounted on the fixed seat 31. A guide slot 321 is provided on one of the fixed seat 31 and the seat 1, and a guide block 30 is provided on the other. The guide block 30 is inserted into the guide slot 321 and can slide forward and backward along the guide slot 321. The guide slot 321 is configured such that, as the guide block 30 slides forward, the angle between the seat plate and the horizontal plane first increases and then decreases, and the angle between the leg support 3 and the horizontal plane gradually decreases. Specifically, in this embodiment, the fixed seat 31 is provided with a guide slot seat 32. The guide slot 321 is disposed on the guide slot seat 32. The guide slot 321 remains fixed relative to the fixed seat 31, preventing relative slippage between the two. The guide block 30 is fixed on the seat 1 .

[0129] Furthermore, the guide groove 321 has a front end 321a, a rear end 321c, and a corner portion 321b located between the front end 321a and the rear end 321c. The corner portion 321b is higher than the front end 321a and the rear end 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 also move in a circular motion, thereby driving the seat 1 to move relative to the fixed seat 31. When the child seat mechanism 100 is in the lying position, the guide block 30 is located in the front end 321a of the guide groove 321, as shown in FIG. Figure 35 When the child seat mechanism 100 is in a zero gravity state, the guide block 30 is located in the corner portion 321b, as shown in FIG. Figure 34 When the child seat mechanism 100 is in the sitting position, the guide block 30 is located in the rear end portion 321c, as shown in FIG. Figure 33 shown.

[0130] A locking member (not shown) is provided between the backrest 2 and the mounting base 31. This locking member connects the backrest 2 and the mounting base 31, locking the child seat mechanism 100 in any one of the use states. If the locking member is disengaged from the backrest 2 and / or the mounting base 31, the child seat mechanism 100 is in an unlocked state, allowing it to transition between the three use states.

[0131] An angle adjustment device 34 is provided between the leg support 3 and the backrest 2, and the angle of the leg support 3 can be automatically adjusted as the backrest 2 rotates. The angle adjustment device 34 is rotationally connected between the backrest 2 and the leg support 3, and the angle adjustment device 34 includes a plurality of linkage rods that are rotationally connected. The angle adjustment device 34 may include a first linkage rod 341, a second linkage rod 342 and a third linkage rod 343. Among them, the first end of the first linkage rod 341 is rotationally connected to the leg support 3; the second linkage rod 342 can be slidably provided on the seat 1 along the front and rear directions, the first end (front end) of the second linkage rod 342 is rotationally connected to the second end of the first linkage rod 341, and the second end (rear end) of the second linkage rod 342 is rotationally connected to the first end of the third linkage rod 343; the second end of the third linkage rod 343 is directly or indirectly rotationally connected to the backrest 2. In the example shown in the drawings, the second end of the third linkage rod 343 is rotationally connected to the backrest 2 through a fourth linkage rod 344. Specifically, as Figure 32As shown, the backrest 2 further includes a third connecting portion 33c, which is located below the second connecting portion 33b. The first end (upper end) of a fourth linkage rod 344 is connected to the second connecting portion 33b. Preferably, the first end of the fourth linkage rod, the second connecting portion 33b, and the seat 1 are simultaneously pivotally connected via a pivot a12. The second end (lower end) of the fourth linkage rod 344 is connected to the third connecting portion 33c, and the second end of the third linkage rod 343 is connected to the second end of the fourth linkage rod 344. The fourth linkage rod 344 strengthens the backrest 2, particularly the portion of the backrest 2 that applies a forward thrust or rearward pull to the angle adjustment device 34.

[0132] A limiting groove is provided on the seat 1, which is configured to limit the second linkage rod 342 to slide only relative to the seat 1. Specifically, Figure 32 As shown, the seat 1 is provided with a first limiting slot 345 and a second limiting slot 346 extending generally in the front-to-back direction. The first limiting slot 345 and the second limiting slot 346 are located on the front and rear sides of the guide block 30, respectively. A first linking rod 341 and a second linking rod 342 are pivotally connected, with the pivot connecting the two rods inserted in the first limiting slot 345 and capable of forward and backward movement within the first limiting slot 345. A second linking rod 342 and a third linking rod 343 are pivotally connected, with the pivot connecting the two rods inserted in the second limiting slot 346 and capable of forward and backward movement within the second limiting slot 346. The limiting slots restrict the movement direction of the second linking rod 342, thereby enabling the leg support 3 to rotate when the backrest 2 is tilted.

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

[0134] When the seat mechanism 100 is in the sitting position, the backrest 2 and the fixed seat 31 are unlocked, and the backrest 2 is pressed downward, causing it to rotate about the pivot a11. The second connecting portion 33b pushes the seat 1 forward and upward. Under the action of the guide groove 321, the seat 1 flips to the desired angle until the guide block 30 slides forward from the rear end of the guide groove 321 to its corner portion 321b. The seat mechanism 100 is in a zero-gravity state, achieving the transition from the sitting position to the zero-gravity state. The transition process from the sitting position or the zero-gravity state to the reclining position is similar to the above process, except that the seat mechanism 100 is in the reclining position when the guide block 30 slides forward to the front end of the guide groove 321. In the above process, the backrest 2 drives the fourth linkage rod 344 to rotate around the pivot a11, drives the third linkage rod 343 to rotate forward, and the second linkage rod 342 slides forward. The first linkage rod 341 then turns forward and upward to push the leg support 3 to turn upward, so that the leg support 3 tilts upward and the angle relative to the horizontal plane decreases. Figures 36 to 38 shown.

[0135] When the seat mechanism 100 is in the reclining position, the backrest 2 and the fixed seat 31 are unlocked, and the backrest 2 is pushed upward, causing it to rotate about the pivot a11. The second connecting portion 33b pulls the seat 1 backward and downward. Under the action of the guide slot 321, the seat 1 flips to the desired angle until the guide block 30 slides backward from the front end of the guide slot 321 to its corner portion 321b. The seat mechanism 100 is in a zero-gravity state, achieving the transition from the reclining position to the zero-gravity state. The transition process from the reclining position or the zero-gravity state to the sitting position is similar to the above process, except that the seat mechanism 100 is in the sitting position when the guide block 30 slides backward to the rear end of the guide slot 321. In the above process, the backrest 2 drives the fourth linkage rod 344 to rotate around the pivot a11, pulling the third linkage rod 343 to rotate backward, the second linkage rod 342 to slide backward, and the first linkage rod 341 to flip backward to pull the leg support 3 backward and downward, causing the leg support 3 to fall and increase the angle relative to the horizontal plane. Figures 36 to 38 shown.

[0136] The child seat mechanism 100 has the following advantages: the child seat mechanism 100 has multiple usage states, including a zero-gravity state. In this zero-gravity state, the heights of the passenger's heart and knees are basically the same. In this posture, the passenger has optimal comfort and is easy to use, allowing the child in the child seat mechanism 100 to have multiple postures; by operating the backrest 2, the child seat mechanism 100 can be converted between multiple usage states such as sitting, zero-gravity and lying, and the conversion operation is convenient; in different usage states, as the backrest 2 is flipped, the angle of the leg support 3 can be automatically adjusted to provide corresponding support for the calf, which further helps to improve riding comfort.

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

[0138] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art. If a definition used herein conflicts or is inconsistent with a definition in other published documents, the definition used herein shall prevail.

[0139] It should also be noted that the “rotational connection” in the above embodiments refers to a pivotal connection, unless the context clearly indicates other rotational connection methods.

[0140] As shown in this specification and claims, the terms "comprise" and "include" only indicate the inclusion of the steps and elements that have been explicitly identified, and these steps and elements do not constitute an exclusive list. The method or apparatus may also include other steps or elements.

[0141] It is further understood that in this disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship. The singular forms "a", "the", and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0142] It will be further understood that the terms "first," "second," and the like are used to describe various types of information, but such information should not be limited to these terms. These terms are used solely to distinguish information of the same type from one another and do not indicate a particular order or level of importance. In fact, the terms "first," "second," and the like are fully interchangeable. For example, first information could be referred to as second information, and similarly, second information could be referred to as first information without departing from the scope of this disclosure.

[0143] The above embodiment is only for illustrating the technical concept and features of the present invention and is a preferred embodiment. Its purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the scope of protection of the present invention.

Claims

1. A child seat mechanism, characterized in that: The invention comprises a seat, a backrest capable of rotating relative to the seat, and a leg support capable of rotating relative to the seat, wherein 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, and the leg support defines a third plane for supporting the calves of the occupant; The child seat mechanism comprises a plurality of use states, one of which is a zero gravity state; when the child seat mechanism is in the zero gravity state, the front portion of the seat is higher than the rear portion thereof, the first plane has a first angle greater than zero relative to the horizontal plane, the second plane has a second angle greater than zero and less than 90 degrees relative to the horizontal plane, and the third plane has a third 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; The child seat mechanism also includes an angle adjustment device, a front end of which is rotatably connected to the leg support, and a rear end of which is rotatably connected to the backrest, so that when the backrest rotates, the leg support is driven to rotate to convert the child seat mechanism between multiple usage states.

2. The child seat mechanism according to claim 1, characterized in that: The first angle is 18 to 40 degrees, the second angle is 35 to 55 degrees, and the third angle is 26 to 40 degrees.

3. The child seat mechanism according to claim 2, characterized in that: The first angle is 25 to 35 degrees, the second angle is 40 to 50 degrees, and the third angle is 28 to 35 degrees.

4. The child seat mechanism according to any one of claims 1 to 3, characterized in that: The multiple usage states also include a sitting state and a lying state. In the sitting state and the lying state, the angle between the first plane and the horizontal plane is smaller than the first angle. In the process of converting from the sitting state through the zero gravity state to the lying state, the angle between the second plane and the horizontal plane gradually decreases, and the angle between the third plane and the horizontal plane gradually decreases.

5. The child seat mechanism according to any one of claims 1 to 3, characterized in that: The child seat mechanism includes a connecting seat, and the rear portion of the seat is rotatably connected to the connecting seat; The angle adjustment device comprises: A backrest driving rod, through which the backrest is rotatably connected to the connecting seat; a first drive rod having a first end portion rotatably connected to the backrest drive rod; A second driving rod having a first end portion 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 driving rod, the second end of the second driving rod and the second end of the third driving rod are rotatably connected.

6. The child seat mechanism according to claim 5, characterized in that: The second end of the fourth driving rod is rotatably and slidably connected to the leg support to allow the lower end of the leg support and the backrest to move closer to each other after the child seat mechanism is folded; The backrest drive rod comprises: An upper driving rod, which is fixedly connected to the lower end of the backrest or is integral with the backrest, and the upper driving rod is 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 also includes a backrest rod locking member, which has a locked state and an unlocked state. In the locked state, the backrest rod locking member connects the upper drive rod and the lower drive rod. In the unlocked state, the backrest rod locking member is disengaged from the upper drive rod and / or the lower drive rod to allow the upper drive rod to flip relative to the lower drive rod, thereby folding or unfolding the child seat mechanism.

7. The child seat mechanism according to any one of claims 1 to 3, characterized in that: The child seat mechanism comprises a base, the backrest is connected to a backrest connecting rod, and the backrest connecting rod is rotatably connected to the base; The angle adjustment device comprises: a first push rod having a first end portion rotatably connected to the backrest connecting rod; a second push rod having a first end portion rotatably connected to the second end portion of the first push rod; a third push rod having a first end portion rotatably connected to the second end portion of the second push rod; Wherein, the second end of the third push rod is rotatably connected to the leg support; The second push rod is slidably disposed on the seat in a front-rear direction.

8. The child seat mechanism according to claim 7, characterized in that: The child seat mechanism also has a folded state, in which the backrest and the seat are brought close to each other; a long slot is provided on the leg support, and a connecting pin is provided on the second end of the third push rod, and the connecting pin is inserted in the long slot and can rotate in the long slot and slide along the long slot to make the leg support and the backrest close to each other after the child seat mechanism is folded; a sliding sleeve is provided on the seat, and the second push rod can slide through the sliding sleeve in the front-rear direction.

9. The child seat mechanism according to any one of claims 1 to 3, characterized in that: The child seat mechanism comprises a fixed seat, a first connection portion of the backrest is rotatably connected to the fixed seat, the seat is slidably arranged on the fixed seat, a second connection portion of the backrest is rotatably connected to the seat, and the second connection portion is spaced apart from the first connection portion; The angle adjustment device includes 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, and the rear end of the second linkage rod is rotatably connected to the third linkage rod.

10. A carrier, characterized in that: Comprising a seat mechanism as claimed in any one of claims 1 to 9.

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