Child seat mechanism and carrier

Abstract

The utility model discloses a child seat mechanism and a carrier. The child seating mechanism includes a base, a seat defining a first plane for supporting an occupant's thighs, and a backrest defining a second plane for supporting an occupant's back. The child seat mechanism comprises a seat driving device, the seat driving device comprises a backrest connecting rod connected to the backrest, and the backrest connecting rod is rotationally connected to the base. The seat comprises a seat rod, and the seat rod is rotationally connected to the base. The seat rod and the backrest connecting rod are slidably and rotatably connected so that the backrest connecting rod can drive the seat rod to rotate when rotating along with the backrest, and therefore the child seat mechanism is converted into a zero-gravity state, at the moment, the front portion of the seat is higher than the rear portion of the seat, and a first included angle larger than zero is formed between the first plane and the horizontal plane. The second plane has a second angle greater than zero with respect to the horizontal plane such that the heart and knees of the occupant are at the same height. The child seat mechanism and the carrier can be switched to a zero-gravity state by rotating the backrest.

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 child 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 child seat mechanisms have an adjusting mechanism between the seat and the backrest, which can adjust the angle between the seat and the backrest. Thus, the child seat mechanism can be converted between multiple use states such as a sitting position and a lying position. When the child seat mechanism is in an intermediate state between the sitting position and the lying position, the angle of the seat, the angle of the backrest, and the angle between the seat and the backrest are crucially important to the comfort of use.

[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, which can be switched to a zero-gravity state by rotating the backrest, 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 base, a seat, and a backrest that can rotate relative to the seat. The seat defines a first plane for supporting the thighs of an occupant, and the backrest defines a second plane for supporting the back of the occupant.

[0007] The child seat mechanism further includes a seat driving device. The seat driving device includes a backrest connecting rod connected to the backrest, and the backrest connecting rod is rotationally connected to the base.

[0008] The seat includes a seat rod, and the seat rod is rotationally connected to the base.

[0009] The seat rod and the backrest connecting rod are slidably and rotationally connected. When the backrest connecting rod rotates with the backrest, the seat rod is driven to rotate, thereby converting the child seat mechanism to 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, and the second plane has a second included angle greater than zero with respect to the horizontal plane, so that the heart and knees of the occupant are at the same height.

[0010] In some preferred embodiments, one of the seat rod and the backrest connecting rod is provided with a track slot, and the other is provided with an adjusting pin, which is slidably inserted into the track slot to slidably and rotatably connect the seat rod and the backrest connecting rod through the adjusting pin.

[0011] In some more preferred embodiments, the track slot is provided on the seat rod and has a front end, a rear end, and a corner portion between the front end and the rear end, the corner portion is located behind the front end and above the rear end, and the adjusting pin is located in the corner portion when the child seat mechanism is in the zero-gravity state; the child seat mechanism also has a sitting state and a lying state, the included angle between the first plane and the second plane in the zero-gravity state is greater than that in the sitting state and less than that in the lying state, the adjusting pin is located in the front end when the child seat mechanism is in the lying state, and the adjusting pin is located in the rear end when the child seat mechanism is in the sitting state.

[0012] In some more preferred embodiments, the seat driving device further comprises a locking member movably arranged on the backrest connecting rod, and the base is provided with a plurality of lock slots arranged in sequence along the outer circumferential direction of the base, the locking member is inserted into one of the lock slots when the child seat mechanism is in the zero-gravity state, and the locking member and the lock slot are disengaged to allow the child seat mechanism to switch states.

[0013] Further, the locking member is slidably mounted on the backrest, the backrest connecting rod is provided with a sliding slot, and the locking member is inserted into the sliding slot and one of the lock slots when the child seat mechanism is in the zero-gravity state; the child seat mechanism also has a folded state, in which the backrest and the seat are close to each other, and the locking member has a position disengaged from the sliding slot and the lock slot to allow the backrest to be flipped relative to the backrest connecting rod, so that the child seat mechanism is folded or unfolded.

[0014] Further, the locking member comprises a sliding pin, the plurality of lock slots comprise a first lock slot, a second lock slot, and a third lock slot arranged in sequence along the outer circumferential direction of the base, the first lock slot, the second lock slot, and the third lock slot respectively extend inward from the outer circumferential edge of the base to allow the sliding pin to enter and exit; the sliding slot extends downward from the upper edge of the backrest connecting rod, so as to have an open upper end to allow the sliding pin to enter and exit; the backrest comprises a backrest rod, the backrest rod is provided with a mounting slot extending along the length direction thereof, the sliding pin is slidably arranged in the mounting slot, and the length of the mounting slot is greater than that of the sliding slot.

[0015] The sliding pin is inserted into the first locking slot, the sliding slot and the mounting slot when the child seat mechanism is in the sitting position; the sliding pin is inserted into the second locking slot, the sliding slot and the mounting slot when the child seat mechanism is in the zero-gravity position; and the sliding pin is inserted into the third locking slot, the sliding slot and the mounting slot when the child seat mechanism is in the lying position.

[0016] The sliding pin is separated from each locking slot and inserted into the sliding slot and the mounting slot during the conversion of the child seat mechanism between the sitting position, the zero-gravity position and the lying position.

[0017] The sliding pin is separated from each locking slot and the sliding slot during the folding or unfolding of the child seat mechanism to allow the backrest to rotate relative to the backrest connecting rod.

[0018] In some preferred embodiments, the child seat mechanism further comprises a leg support rotatable relative to the seat and a leg support driving device for driving the leg support to rotate, an upper end of the leg support being rotatably connected to a front portion of the seat and defining a third plane for supporting shanks of a passenger.

[0019] In some more preferred embodiments, the leg support driving device comprises:

[0020] a first push rod having a first end rotatably connected to the backrest connecting rod;

[0021] a second push rod having a first end rotatably connected to a second end of the first push rod;

[0022] a third push rod having a first end rotatably connected to a second end of the second push rod;

[0023] wherein the second end of the third push rod is rotatably connected to the leg support;

[0024] The second push rod is slidably arranged on the seat in the front-rear direction.

[0025] In some more preferred embodiments, the child seat mechanism further has a folded state in which the backrest and the seat are close to each other, the leg support is provided with an elongated slot, the second end of the third push rod is provided with a connecting pin which is inserted into the elongated slot and can rotate and slide in the elongated slot to make the leg support and the backrest close to each other after the child seat mechanism is folded, and the seat rod is provided with a sliding sleeve through which the second push rod can slide in the front-rear direction.

[0026] The utility model also adopts the following technical scheme:

[0027] A carrier comprising the child seat mechanism.

[0028] In some preferred embodiments, the first included angle is 18-40 degrees and the second included angle is 35-55 degrees.

[0029] More preferably, the first included angle is 25-35 degrees and the second included angle is 40-50 degrees.

[0030] In some preferred embodiments, the carrier comprises a stroller, the stroller comprising a frame and wheels arranged at the bottom of the frame, and the base of the child seat mechanism is removably or fixedly connected to the frame.

[0031] In some more preferred embodiments, the carrier comprises an automobile safety seat, and the base of the child seat mechanism is removably or fixedly connected to the base of the automobile safety seat.

[0032] The above scheme has the following advantages:

[0033] The child seat mechanism has a zero-gravity state; the seat driving device links the backrest and the seat, the backrest connecting rod of the seat driving device and the seat rod of the seat are both rotationally connected to the base, when the backrest drives the backrest connecting rod to rotate, the backrest connecting rod will drive the seat rod to overturn to reach the required angle, the backrest can be converted to the zero-gravity state, in the zero-gravity state, the height of the heart and the knee of the occupant is basically the same, the occupant has the best comfort in this posture, and the state conversion operation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical scheme of the present application, the following will briefly introduce the drawings used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0035] Figure 1 It is a perspective view of a child seat mechanism according to an embodiment of the present application in a sitting posture.

[0036] Figure 2 It is an exploded view of a seat, one side base and a backrest connecting rod according to an embodiment of the present application.

[0037] Figure 3 It is a structural view of a backrest and a locking piece according to an embodiment of the present application.

[0038] Figure 4Figure 1 is a perspective view of a child seat mechanism in a zero-gravity state according to an embodiment of the present application.

[0039] Figure 5 Figure 2 is a side view of the child seat mechanism in a sitting state according to an embodiment of the present application.

[0040] Figure 6 Figure 3 is a side view of the child seat mechanism in a zero-gravity state according to an embodiment of the present application.

[0041] Figure 7 Figure 4 is a side view of the child seat mechanism in a lying state according to an embodiment of the present application.

[0042] Figure 8 Figure 5 is a side view of the child seat mechanism in a folded state according to an embodiment of the present application.

[0043] Figure 9 Figure 6 is a perspective view of a carrier according to an embodiment of the present application.

[0044] Figure 10 Figure 7 is a side view of the carrier, in which the child seat mechanism is in a sitting state, according to an embodiment of the present application.

[0045] Figure 11 Figure 8 is a side view of the carrier, in which the child seat mechanism is in a zero-gravity state, according to an embodiment of the present application.

[0046] Figure 12 Figure 9 is a side view of the carrier, in which the child seat mechanism is in a lying state, according to an embodiment of the present application.

[0047] In the above figures,

[0048] 100, child seat mechanism; 200, child stroller; 201, frame;

[0049] 1, seat; 2, backrest; 3, leg support; 3a, long slot; 4, seat driving device; 5, leg support driving device;

[0050] 21, base; 211, first locking slot; 212, second locking slot; 213, third locking 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, locking member; 25, backrest rod; 251, mounting slot; 26, first push rod; 27, second push rod; 28, third push rod; 281, connecting pin. DETAILED DESCRIPTION

[0051] 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.

[0052] 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 position, which is only for the convenience of describing the present application and simplifying the description, and does 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.

[0053] Figures 1 to 12 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.

[0054] The present embodiment provides a child seat mechanism Figures 1 to 8 The child seat mechanism 100 and a carrier for carrying children, which can be a stroller, an automobile safety seat, etc., as shown in the drawings. The carrier 200 can be Figures 9 to 12 The stroller as shown.

[0055] Referring to Figures 1 to 8 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 thighs of an occupant, and the backrest 2 defines a second plane P2 for supporting the back of the occupant. The leg support 3 is located at the front side of the seat 1 and defines a third plane P3 for supporting the shins of the occupant, as shown in Figure 6 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 a plurality of use states, including a sitting position (as shown in Figure 5 A lying position (as shown in Figure 7 And a zero-gravity state (as shown in Figure 6 Between the sitting position and the lying position. 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 for the occupant to use in different positions; 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 position and less than the included angle between the first plane P1 and the second plane P2 in the lying position.

[0056] As shown in Figure 6As 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 6 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.

[0057] In the Figure 5 The sitting posture shown will be converted sequentially. Figure 6 The zero gravity state shown and Figure 7 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.

[0058] Furthermore, the seating mechanism 100 also has a folded state, in which the backrest 2 and the seat 1 are close together, such as... Figure 8 As shown. When the seating mechanism 100 is unfolded, it can be converted into any usage state, such as... Figure 5 The sitting posture shown Figure 6 The zero-gravity state shown Figure 7 The lying position shown.

[0059] The lower end of the backrest 2 is connected to the rear of the seat 1 via a seat drive device 4, so that the seat 1 rotates when the backrest 2 rotates. In this embodiment, the upper end of the leg support 3 is rotatably connected to the front end of the seat 1, and a leg support drive device 5 is connected between the lower end of the backrest 2 or between the seat 1 and the leg support 3, so that the leg support 3 rotates when the backrest 2 or the seat 1 rotates. The main difference between this embodiment and embodiment 1 is that the seat drive device 4 and the leg support drive device 5 are different. The structure and driving principle of the seat drive device 4 and the leg support drive device 5 in this embodiment will be described in detail below.

[0060] The child seat mechanism 100 comprises a base 21 which is part of or detachably connected to a supporting part of the carrier 200, such as a frame 201 of a stroller, a base of a car safety seat, etc., to mount the child seat mechanism 100 on the supporting part of the carrier 200. The seat 1 comprises a seat rod 22 which is pivotally connected to the base 21. As shown in Figures 5 to 7 , the rear end of the seat rod 22 is pivotally connected to the base 21 by a pivot a1. The seat driving device 4 comprises a backrest connecting rod 23, the backrest 2 comprises backrest rods 25 located on the left and right sides of the backrest 2, the backrest connecting rod 23 is connected to the lower end of the backrest rod 25, and the backrest connecting rod 23 is pivotally connected to the base 21. As shown in Figures 5 to 7 , the lower end of the backrest connecting rod 23 is pivotally connected to the base 21 by a pivot a2. The seat rod 22 and the backrest connecting rod 23 are slidably and pivotally connected to drive the seat rod 22 to rotate when the backrest connecting rod 23 rotates with the backrest 2, so as to convert the use state of the child seat mechanism 100. As shown in Figure 2 , Figures 5 to 7 , 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 pivotally and slidably connected only by the adjusting pin 231. When the backrest 2 rotates, 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 pivots a1, a2 and the adjusting pin 231 are arranged in a triangular shape on the base 21, when the backrest connecting rod 23 rotates, the backrest connecting rod 23 makes a circular motion around the pivot a2, the adjusting pin 231 slides along the track slot 221, driving the seat rod 22 to make a circular motion around the pivot a1, the seat rod 22 is thereby flipped relative to the base 21, and the included angle of the seat rod 22 relative to the horizontal plane is changed. In other embodiments, the track slot can be provided on the backrest connecting rod 23, and the adjusting pin is provided on the seat rod 22, and is configured to slide in the track slot and lift the seat rod 22 upward when the backrest connecting rod 23 rotates, so as to flip the seat rod 22 relative to the base 21 and adjust to the desired angle.

[0061] As shown in Figure 2 , the track slot 221 has a front end 221a, a rear end 221c and a corner portion 221b between the front end 221a and the rear end 221c, the corner portion 221b is located at the rear side of the front end 221a and at the upper side of the rear end 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 221a of the track slot 221, as shown in Figure 7 . 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 in Figure 6The adjustment pin 231 of the child seat mechanism 100 is located in the rear end portion 221c when the child seat mechanism 100 is in the sitting state, as shown in FIG. 1. Figure 5

[0062] The seat driving device 4 further comprises a locking member 24. In the locked state, the locking member 24 is arranged on the base 21 and the backrest connecting rod 23, thereby locking the backrest connecting rod 23 relative to the base 21. In the unlocked state, the 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 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 locking member 24 comprises a sliding pin, and the 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 locking member 24 is slidably inserted into the sliding groove 232. The base 21 is provided with a plurality of locking slots arranged along the outer periphery of the base 21. In any use state of the child seat mechanism 100, the locking member 24 is inserted into the sliding groove 232 and one of the locking slots. When the locking member 24 and the locking slot are disengaged, the child seat mechanism 100 is allowed to switch between use states. Specifically, as shown in FIG. 1, the outer periphery of the base 21 is provided with a first locking slot 211, a second locking slot 212, and a third locking slot 213. The first locking slot 211, the second locking slot 212, and the third locking slot 213 extend inward from the outer periphery of the base 21, thereby allowing the locking member 24 to enter or exit any of the locking slots. The first locking slot 211, the second locking slot 212, and the third locking slot 213 are arranged at intervals. Figure 2

[0063] Further, the locking member 24 can also lock and unlock the backrest connecting rod 23 and the backrest rod 25 relative to each other. In the unfolded state of the child seat mechanism 100, the locking member 24 always connects the backrest rod 25 and the backrest connecting rod 23, regardless of the use state or the switching process between different use states. When the child seat mechanism 100 needs to be folded, the locking member 24 is in the unlocked state, the locking member 24 and the backrest connecting rod 23 are disengaged, and the backrest rod 25 is allowed to flip forward relative to the backrest connecting rod 23 to approach the seat 1. The locking member 24 is mounted on the backrest rod 25 and can slide relative to the backrest rod 25. Specifically, as shown in FIG. 1, the backrest rod 25 is provided with a mounting groove 251 extending along the length direction thereof, and the 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 sliding groove 232, and the upper end of the sliding groove 232 is open to allow the locking member 24 to enter or exit the sliding groove 232. As shown in FIG. 1, the sliding groove 232 extends downward from the upper edge of the backrest connecting rod 23 and has a U-shaped overall structure. In Figure 3 Figure 2 Figures 5 to 7 ​​​​In any of the illustrated use states or during the transition between different use states, the locking member 24 does not disengage from the sliding groove 232; and during the transition between use states, the locking member disengages from the locking groove and is inserted into the sliding groove 232 and the mounting groove 251. When it is necessary to fold or unfold the child seat mechanism 100, as shown, the locking member 24 is moved upwardly so as to disengage from the sliding groove 232 and each of the locking grooves, at which time the backrest rod 25 and the backrest link 23 are unlocked, and the backrest rod 25 can be flipped forwardly relative to the backrest link 23 so as to be close to the seat 1, thereby achieving folding. Figure 8

[0064] The upper end of the leg support 3 is pivotally connected to the front portion of the seat 1. The leg support driving device 5 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 and the second end of the first push rod 26 are pivotally connected, the first end of the third push rod 28 and the second end of the second push rod 27 are pivotally connected, and the second end of the third push rod 28 is pivotally connected to the leg support 3. When the backrest link 23 is rotated, the first push rod 26 is rotated, and in turn, the leg support 3 is flipped and changed in angle by the second push rod 27 and the third push rod 28. The second push rod 27 is slidably arranged on the seat 1 in the front-rear direction. Specifically, the seat rod 22 is provided with a sliding sleeve 222, and the second push rod 27 is slidably arranged through the sliding sleeve 222 in the front-rear direction.

[0065] Further, the second end of the third push rod 28 is slidable relative to the leg support 3, so as to allow the lower end of the leg support 3 and the backrest 2 to be close to each other after the child seat mechanism 100 is folded, as shown. Figure 8 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 third push rod 28 is provided with a connecting pin 281, which is inserted into the long slot 3a and is configured to be rotatable in the long slot 3a and slidable along 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 is slid from the lower end to the upper end of the long slot 3a, as shown. Figure 8

[0066] The embodiment also provides a carrier 200, which can be a Figures 9 to 12 child stroller as shown. Referring to Figures 9 to 12 ​​As shown, the 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 and part of the frame 201, for example, 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 10 、 Figure 11 and Figure 12

[0067] The process of the child seat mechanism 100 converting between the three use states is as follows:

[0068] When the child seat mechanism 100 is in the sitting state, the 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 state; when the locking piece 24 is moved upward to disengage from the first locking groove 211 and move along the outer peripheral surface of the base 21 between the first locking groove 211 and the second locking groove 212, in this process, the 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 adjustment 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 is rotated around the base 21, the front side 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 upward and overturn; until the locking piece 24 slides 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 state to the zero gravity state is realized. The conversion process from the sitting state or the zero gravity state to the lying state is similar to the foregoing process, except that the locking piece 24 slides above the third locking groove 213 and falls into the third locking groove 213 to lock the child seat mechanism 100 in the lying state.

[0069] ​When the child seat mechanism 100 is in the lying state, the locking member 24 is inserted into the installation slot 251, the sliding slot 232 and the third locking slot 213 to lock the child seat mechanism 100 in the lying state; when the locking member 24 is moved upward to be separated from the third locking slot 213 and moved along the outer peripheral surface of the base 21 between the third locking slot 213 and the second locking slot 212, in the process, the locking member 24 is still in the sliding slot 232 and the installation slot 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 driven to slide from the front end of the track slot 221 to the corner of the track slot 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 locking member 24 slides above the second locking slot 212 and falls into the second locking slot 212, the child seat mechanism 100 is locked 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 lies in that the locking member 24 slides above the first locking slot 211 and falls into the first locking slot 211 to lock the child seat mechanism 100 in the sitting state.

[0070] The folding process of the child seat mechanism 100 is as follows:

[0071] When the child seat mechanism 100 is in the sitting state, the locking member 24 is moved upward to be separated from the sliding slot 232, the backrest rod 25 and the backrest connecting rod 23 are unlocked, the backrest rod 25 is pushed forward to be close to the seat 1, and the conversion to the Figure 8 folding state shown in the figure is realized.

[0072] 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 posture, 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 between the sitting state, the zero-gravity state and the lying state and the like, and the conversion operation is convenient; in different use states, the angle of the leg support 3 also changes automatically, the corresponding support is provided for the lower leg, and the comfort of the occupant is further improved, and the use is convenient.

[0073] 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.

[0074] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. In case of conflict between the definitions of terms in this document and those of the art, the definitions provided in this document shall control.

[0075] It should also be noted that the "rotary connection" in the above embodiments refers to a pivot connection, unless the context clearly indicates other rotary connection methods.

[0076] 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.

[0077] It should be further understood that "multiple" in the present disclosure refers to two or more, and other quantifiers are similar. The term "and / or" describes the relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can represent three cases: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects. The singular form of "one", "said" and "the" is also intended to include the plural form, unless the context clearly indicates otherwise.

[0078] 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", etc. can be used interchangeably. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present disclosure.

[0079] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and are a preferred embodiment, the purpose of which is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application.

Claims

1. A child seat mechanism, characterized in that, The child seat mechanism comprises a base, a seat and a backrest rotatable relative to the seat, the seat defines a first plane for supporting thighs of a passenger, and the backrest defines a second plane for supporting a back of the passenger; The child seat mechanism further comprises a seat driving device, the seat driving device comprises a backrest connecting rod connected to the backrest, the backrest connecting rod is rotatably connected to the base; The seat comprises a seat rod, the seat rod is rotatably connected to the base; The seat rod and the backrest connecting rod are slidably and rotatably connected, so that the seat rod is driven to rotate when the backrest connecting rod rotates with the backrest, thereby converting the child seat mechanism to a zero-gravity state, in the zero-gravity state, a front part of the seat is higher than a rear part of the seat, the first plane has a first included angle greater than zero relative to a horizontal plane, and the second plane has a second included angle greater than zero relative to the horizontal plane, so that a heart and knees of the passenger are at the same height.

2. The child seat mechanism of claim 1, wherein, One of the seat rod and the backrest connecting rod is provided with a track groove, and the other is provided with an adjusting pin, the adjusting pin is slidably inserted into the track groove, so that the seat rod and the backrest connecting rod are slidably and rotatably connected through the adjusting pin.

3. The child seat mechanism of claim 2, wherein, The track groove is provided on the seat rod and has a front end part, a rear end part and a corner part between the front end part and the rear end part, the corner part is located behind the front end part and above the rear end part, the adjusting pin is located in the corner part when the child seat mechanism is in the zero-gravity state, the child seat mechanism further has a sitting state and a lying state, the included angle between the first plane and the second plane in the zero-gravity state is greater than that in the sitting state and less than that in the lying state, the adjusting pin is located in the front end part when the child seat mechanism is in the lying state, and the adjusting pin is located in the rear end part when the child seat mechanism is in the sitting state.

4. The child seat mechanism of claim 2, wherein, The seat driving device further comprises a locking member movably arranged on the backrest connecting rod, the base is provided with a plurality of locking grooves arranged along an outer circumferential direction of the base in sequence, the locking member is inserted into one of the locking grooves when the child seat mechanism is in the zero-gravity state, and the locking member and the locking groove are disengaged to allow the child seat mechanism to be converted.

5. The child seat mechanism of claim 4, wherein, The locking member is slidably mounted on the backrest, the backrest connecting rod is provided with a sliding groove, the locking member is inserted into the sliding groove and one of the locking grooves when the child seat mechanism is in the zero-gravity state, the child seat mechanism further has a folding state, in the folding state, the backrest and the seat are close to each other, and the locking member has a position disengaged from the sliding groove and the locking groove to allow the backrest to be flipped relative to the backrest connecting rod, thereby folding or unfolding the child seat mechanism.

6. The child seat mechanism of claim 5, wherein, The locking member comprises a sliding pin, the plurality of locking slots comprise a first locking slot, a second locking slot and a third locking slot arranged in sequence along the outer circumferential direction of the base, the first locking slot, the second locking slot and the third locking slot extend inwardly from the outer circumferential edge of the base to allow the sliding pin to enter and exit; the sliding slot extends downwardly from the upper edge of the backrest connecting rod, thereby having an open upper end to allow the sliding pin to enter and exit; the backrest comprises a backrest rod, the backrest rod is provided with a mounting slot extending along the length direction thereof, the sliding pin is slidably arranged in the mounting slot, and the length of the mounting slot is greater than the length of the sliding slot; In the sitting state of the child seat mechanism, the sliding pin is inserted into the first locking slot, the sliding slot and the mounting slot; in the zero-gravity state of the child seat mechanism, the sliding pin is inserted into the second locking slot, the sliding slot and the mounting slot; in the lying state of the child seat mechanism, the sliding pin is inserted into the third locking slot, the sliding slot and the mounting slot; In the conversion process between the sitting state, the zero-gravity state and the lying state of the child seat mechanism, the sliding pin is disengaged from each locking slot and inserted into the sliding slot and the mounting slot; In the folding or unfolding process of the child seat mechanism, the sliding pin is disengaged from each locking slot and the sliding slot to allow the backrest to rotate relative to the backrest connecting rod.

7. The child seat mechanism of claim 1, wherein, The child seat mechanism further comprises a leg support rotatable relative to the seat and a leg support driving device for driving the leg support to rotate, the upper end of the leg support is rotatably connected to the front of the seat and defines a third plane for supporting the shanks of a passenger.

8. The child seat mechanism of claim 7, wherein, The leg support driving 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 the second end of the first push rod; a third push rod having a first end rotatably connected to the second end 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 arranged on the seat in the front-rear direction.

9. The child seat mechanism of claim 8, wherein, The child seat mechanism further has a folded state, in which 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 to make the leg support and the backrest close to each other after the child seat mechanism is folded; the seat rod is provided with a sliding sleeve, and the second push rod can slide through the sliding sleeve in the front-rear direction.

10. A carrier, characterized by The child seat mechanism comprises the child seat mechanism according to any one of claims 1 to 9, the first included angle is 18-40 degrees, and the second included angle is 35-55 degrees.

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