Child seat mechanism and carrier

Abstract

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

[0002] The child seat mechanism is one of the indispensable parts of child carriers such as child strollers and car safety seats. Common child seat mechanisms include a seat and a backrest, where the seat is used to support the child's buttocks and thighs, and the backrest is used to support the child's back. In order to improve the comfort of use, some child seat mechanisms have an adjustment mechanism between the seat and the backrest, which can adjust the angle between the seat and the backrest; so that the child seat mechanism can be transformed in posture, for example, it can be transformed between multiple use states such as sitting and lying. When the child seat mechanism is in the intermediate state between sitting and lying, the angle of the seat, the angle of the backrest and the angle between the two have a crucial influence on the comfort of use.

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

[0004] The invention relates to a child seat mechanism and a carrier, which can be switched to a zero-gravity state by rotating a backrest, and the switch is convenient, and the child seat has excellent comfort in the zero-gravity state.

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

[0006] A child seat mechanism comprises a base, a seat and a backrest that can rotate relative to the seat, the seat defining a first plane for supporting the thighs of an occupant, and the backrest defining a second plane for supporting the back of the occupant;

[0007] The child seat mechanism further comprises a seat drive device, wherein the seat drive device comprises a backrest connecting rod connected to the backrest, and the backrest connecting rod is rotatably connected to the base;

[0008] The seat includes a seat rod, and the seat rod is rotatably connected to the base;

[0009] The seat rod and the backrest connecting rod are slidably and rotatably connected to drive the seat rod to rotate when the backrest connecting rod rotates with the backrest, so that the child seat mechanism is converted to a zero-gravity state. In the zero-gravity state, the front part of the seat is higher than the rear part thereof, the first plane has a first angle greater than zero relative to the horizontal plane, and the second plane has a second angle greater than zero relative 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 groove, and the other is provided with an adjustment pin, and the adjustment 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 adjustment pin.

[0011] In some more preferred embodiments, the track groove is arranged on the seat rod and has a front end portion, a rear end portion and a corner portion located between the front end portion and the rear end portion, the corner portion is located on the rear side of the front end portion and on the upper side of the rear end portion, and the adjustment pin is located in the corner portion when the child seat mechanism is in a zero gravity state; the child seat mechanism also has a sitting state and a lying state, and in the zero gravity state, the angle between the first plane and the second plane is greater than the angle between the first plane and the second plane in the sitting state, and is smaller than the angle between the first plane and the second plane in the lying state, and the adjustment pin is located in the front end portion when the child seat mechanism is in the lying state, and the adjustment pin is located in the rear end portion when the child seat mechanism is in the sitting state.

[0012] In some more preferred embodiments, the seat drive device also includes a locking member, which is movably arranged on the backrest connecting rod, and the base is provided with a plurality of locking grooves arranged in sequence along the outer circumferential direction of the base, and 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 change state.

[0013] Furthermore, the locking piece is slidably mounted on the backrest, a slide groove is provided on the backrest connecting rod, and the locking piece is inserted into the slide groove and one of the locking grooves in the zero gravity state; the child seat mechanism also has a folding state, in which the backrest and the seat are close to each other, and the locking piece also has a position disengaged from the slide 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.

[0014] Furthermore, the locking member includes a sliding pin, the plurality of locking grooves include a first locking groove, a second locking groove and a third locking groove sequentially arranged along the peripheral direction of the base, the first locking groove, the second locking groove and the third locking groove respectively extend inward from the peripheral edge of the base to allow the sliding pin to enter and exit; the sliding groove extends downward 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 includes a backrest rod, the backrest rod is provided with a mounting groove extending along the length direction thereof, the sliding pin is slidably arranged in the mounting groove, and the length of the mounting groove is greater than the length of the sliding groove;

[0015] When the child seat mechanism is in a sitting position, the sliding pin is inserted into the first locking groove, the sliding groove and the mounting groove; when the child is in the zero gravity state, the sliding pin is inserted into the second locking groove, the sliding groove and the mounting groove; when the child seat mechanism is in a lying position, the sliding pin is inserted into the third locking groove, the sliding groove and the mounting groove;

[0016] During the conversion process of the child seat mechanism between the sitting state, the zero gravity state and the lying state, the sliding pin is disengaged from each locking groove and inserted into the sliding groove and the mounting groove;

[0017] During the folding or unfolding process of the child seat mechanism, the sliding pin is disengaged from each locking groove and the sliding groove 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 capable of rotating relative to the seat and a leg support driving device for driving the leg support to rotate, wherein the upper end portion of the leg support is rotatably connected to the front portion of the seat and defines a third plane for supporting the calf of the occupant.

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

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

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

[0022] a third push rod having a first end portion rotatably connected to the second end portion 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 disposed on the seat in a front-rear direction.

[0025] In some more preferred embodiments, the child seat mechanism also has a folded state, in which the backrest and the seat are brought close to each other; a long groove 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 groove and can rotate in the long groove and slide along the long groove 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 rod, and the second push rod can slide through the sliding sleeve in the front and rear directions.

[0026] The present invention also adopts the following technical solution:

[0027] A carrier comprises the child seat mechanism.

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

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

[0030] In some preferred embodiments, the carrier comprises a baby carriage, which comprises a frame and wheels disposed 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 includes a car safety seat, and the base of the child seat mechanism is removably or fixedly connected to the base of the car safety seat.

[0032] The present invention adopts the above scheme and has the following advantages:

[0033] The child seat mechanism of the present invention has a zero gravity state. The backrest and the seat are linked by a seat driving device. The backrest connecting rod of the seat driving device and the seat rod of the seat are both rotatably connected to the base. When the backrest drives the backrest connecting rod to rotate, the backrest connecting rod drives the seat rod to flip to submit to a required angle. The backrest can be operated to switch to a zero gravity state. In this zero gravity state, the heights of the heart and knees of the passenger are basically the same. In this posture, the passenger has the best comfort and the state conversion operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0035] Figure 1 The present invention is a three-dimensional diagram of a child seat mechanism in a sitting state according to an embodiment of the present invention.

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

[0037] Figure 3 Schematic diagram of a backrest and a locking member according to an embodiment of the present invention.

[0038] Figure 4 The figure is a three-dimensional diagram of a child seat mechanism according to an embodiment of the present invention in a zero gravity state.

[0039] Figure 5 The figure is a side view of a child seat mechanism according to an embodiment of the present invention when the child seat mechanism is in a sitting position.

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

[0041] Figure 7 The figure is a side view of a child seat mechanism according to an embodiment of the present invention when the child seat mechanism is in a lying position.

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

[0043] Fig. 9 is a three-dimensional diagram of a carrier according to an embodiment of the present invention.

[0044] Fig.10 The figure is a side view of a carrier according to an embodiment of the present invention, wherein the child seat mechanism is in a sitting position.

[0045] Fig.11 FIG. 1 is a side view of a carrier according to an embodiment of the present invention, wherein the child seat mechanism is in a zero gravity state.

[0046] Fig.12 The figure is a side view of a carrier according to an embodiment of the present invention, wherein the child seat mechanism is in a lying position.

[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 drive device; 5. leg support drive 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; 221b. corner portion; 221c. rear end; 222. sliding sleeve; 23. backrest connecting rod; 231. adjustment pin; 232. sliding slot; 24. locking piece; 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 invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is used to help understand the present invention, but 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 can be combined with each other as long as they do not conflict with each other.

[0052] 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 drawings when the child seat mechanism is in a sitting position. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present application.

[0053] Figures 1 to 12 The drawings are drawn in true proportion. To keep the specification concise, the proportions of each component are not listed one by one. However, the proportions and positions of each component should be regarded as part of the content of this specification.

[0054] This embodiment provides a Figures 1 to 8 The child seat mechanism 100 and a carrier are shown, and the carrier is used to carry children, and can be a child stroller, a car safety seat, etc. The carrier 200 can be Figures 9 to 12 The stroller shown.

[0055] Reference Figures 1 to 8 As shown, 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 the 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 calves of the occupant. 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 multiple use states, including a sitting state (such as Figure 5 As shown), lying position (as shown Figure 7 as shown) and the zero gravity state between the sitting state and the lying state (as shown Figure 6 In each use state, 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 allow the occupant to use the backrest in different postures; 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 is less than the angle between the first plane P1 and the second plane P2 in the lying state.

[0056] like Figure 6As 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. Figure 6 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.

[0057] In by Figure 5 The sitting posture shown is converted into Figure 6 The zero gravity state shown and Figure 7 In the lying state shown, the first angle α1 increases first 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.

[0058] Furthermore, the seat mechanism 100 also has a folded state, in which the backrest 2 and the seat 1 are close to each other. Figure 8 After the seat mechanism 100 is unfolded, it can be converted into any use state, such as Figure 5 The sitting posture shown, Figure 6 The zero gravity state shown, Figure 7 Lying position shown.

[0059] The lower end of the backrest 2 is connected to the rear of the seat 1 through the 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 to 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 the first embodiment 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 of this embodiment are described in detail below.

[0060] The child seat mechanism 100 includes a base 21, which is a part of a support portion of a carrier 200 (e.g., a frame 201 of a stroller, a base of a car safety seat, etc.) or is detachably connected to the support portion of the carrier 200, so that the child seat mechanism 100 is installed on the support portion of the carrier 200. The seat 1 includes a seat bar 22, which is rotatably connected to the base 21. Figures 5 to 7 As shown, the rear end of the seat rod 22 is rotatably connected to the base 21 via the pivot a1. The seat driving device 4 includes a backrest link 23, and the backrest 2 includes backrest rods 25 located on the left and right sides of the backrest 2. The backrest link 23 is connected to the lower end of the backrest rod 25, and the backrest link 23 is rotatably connected to the base 21. Figures 5 to 7 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 changing the use state of the child seat mechanism 100. Figure 2 , Figures 5 to 7 As shown, the seat rod 22 is provided with a track groove 221, and the backrest connecting rod 23 is provided with an adjustment pin 231, and the adjustment pin 231 is slidably inserted in the track groove 221, and the seat rod 22 and the backrest connecting rod 23 are connected rotatably and slidably only through the adjustment pin 231. When the backrest 2 rotates, the adjustment pin 231 can slide 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, the pivot a2 and the adjustment pin 231 are arranged in a triangle on the base 21. When the backrest connecting rod 23 rotates, the backrest connecting rod 23 makes a circular motion around the pivot a2, and the adjustment pin 231 slides along the track groove 221, driving the seat rod 22 to make a circular motion around the pivot a1, and the seat rod 22 is then flipped relative to the base 21, thereby changing the angle of the seat rod 22 relative to the horizontal plane. In some other embodiments, the track groove can be set on the backrest connecting rod 23, and the adjustment pin is set on the seat rod 22, and is configured so that when the backrest connecting rod 23 rotates, the adjustment pin slides in the track groove and tilts the seat rod 22 upward, so that the seat rod 22 is flipped relative to the base 21 and adjusted to a desired angle.

[0061] like Figure 2 As shown, the track groove 221 has a front end 221a, a rear end 221c, and a corner portion 221b located between the front end 221a and the rear end 221c, and 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 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 221a of the track groove 221, as shown in FIG. Figure 7 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 6When the child seat mechanism 100 is in the sitting position, the adjustment pin 231 is located in the rear end portion 221c, as shown in FIG. Figure 5 shown.

[0062] The seat drive device 4 further includes a locking member 24. In a 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 an unlocked state, the locking member 24 releases the backrest connecting rod 23 and the base 21, allowing the backrest connecting rod 23 to rotate relative to the base 21. In some other embodiments, the locking member 24 may also be arranged on the base 21 and the seat rod 22 in a locked state, and release the base 21 and the seat rod 22 in an unlocked state. Specifically, in the example shown in the drawings, the locking member 24 includes a sliding pin, and the locking member 24 is slidably arranged on the backrest connecting rod 23. Specifically, a sliding groove 232 extending along the length direction of the backrest connecting rod 23 is provided, and the locking member 24 is slidably inserted in the sliding groove 232. 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 locking member 24 is inserted into the slide groove 232 and one of the locking grooves. When the locking member 24 and the locking groove are disengaged, the child seat mechanism 100 is allowed to change the use state. Figure 2 As shown, the outer peripheral surface of the base 21 is provided with a first locking groove 211, a second locking groove 212 and a third locking groove 213, which extend inward from the outer peripheral edge of the base 21, thereby allowing the locking member 24 to enter and exit any locking groove. The first locking groove 211, the second locking groove 212 and the third locking groove 213 are arranged at intervals.

[0063] Furthermore, the locking member 24 can also lock and unlock the backrest connecting rod 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 of different use states, the locking member 24 always connects the backrest rod 25 and the backrest connecting rod 23. When the child seat mechanism 100 needs to be folded, the locking member 24 is in the unlocked state, and the locking member 24 and the backrest connecting rod 23 are disengaged, allowing the backrest rod 25 to flip forward relative to the backrest connecting rod 23 to get closer to the seat 1. The locking member 24 is installed on the backrest rod 25 and can slide relative to the backrest rod 25. Specifically, as Figure 3 As shown, the backrest rod 25 is provided with a mounting groove 251 extending along its length direction, 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 slide groove 232, and the upper end of the slide groove 232 is open to allow the locking member 24 to enter and exit the slide groove 232. Figure 2 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 5 to 7In any of the use states shown or in the process of switching between different use states, the locking member 24 will not be separated from the slide groove 232; and in the process of switching the use state, the locking member is separated from the lock groove and inserted into the slide groove 232 and the mounting groove 251. When it is necessary to fold or unfold the child seat mechanism 100, as shown in FIG. Figure 8 As shown, the locking member 24 is moved upward to disengage from the slide slot 232 and the locking slots. 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.

[0064] The upper end of the leg support 3 is connected to the front part of the seat 1 by pivoting. 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 rotatably connected to the backrest connecting rod 23, the first end of the second push rod 27 is rotatably connected to the second end of the first push rod 26, the first end of the third push rod 28 is rotatably connected to the second end of the second push rod 27, and the second end of the third push rod 28 is rotatably connected to the leg support 3. When the backrest connecting rod 23 rotates, the first push rod 26 rotates accordingly, and then the leg support 3 is pushed to flip and change the angle through the second push rod 27 and the third push rod 28. Among them, the second push rod 27 can be slidably arranged on the seat 1 in the front-back direction. Specifically, a sliding sleeve 222 is provided on the seat rod 22, and the second push rod 27 can slide through the sliding sleeve 222 in the front-back direction.

[0065] 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 8 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, and the connecting pin 281 is inserted into the long slot 3a and 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 folding state, the connecting pin 281 slides from the lower end of the long slot 3a to the upper end thereof, as shown in FIG. Figure 8 shown.

[0066] This embodiment also provides a carrier 200, which can be Figures 9 to 12 Stroller shown. Figures 9 to 12As shown, the child stroller includes a frame 201 and wheels arranged 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 has three use states after unfolding: sitting position, zero gravity and lying position, as shown in FIG. Fig.10 , Fig.11 and Fig.12 shown.

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

[0068] When the child seat mechanism 100 is in a sitting position, the 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 a sitting position; when the 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 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 relative to 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, and the seat rod 22 rotates around the base 21, and its front side is lifted upward, and at the same time, the first push rod 26, the second push rod 27 and the third push rod 28 cooperate to push the leg support member 3 to flip upward; until the locking member 24 slides to the top of 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 above process, the difference is that the locking member 24 slides to the top of the third locking groove 213 and falls into the third locking groove 213, and the child seat mechanism 100 is locked in the lying state.

[0069] When the child seat mechanism 100 is in a lying state, the 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 a lying state; when the 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 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 relative to the base. The first push rod 26, the second push rod 27 and the third push rod 28 cooperate to push the leg support member 3 to flip downward; until the locking member 24 slides to the top of the second locking groove 212 and falls into the second locking groove 212, the child seat mechanism 100 is locked in the zero gravity state, and the conversion from the lying 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 above process, except that the locking member 24 slides to the top of the first locking groove 211 and falls into the first locking groove 211, and the child seat mechanism 100 is locked in the sitting state.

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

[0071] The child seat mechanism 100 is placed in a sitting position, the locking member 24 is moved upward to disengage the locking member 24 from the slide slot 232, the backrest rod 25 and the backrest connecting rod 23 are unlocked, and the backrest rod 25 is pushed forward to move it closer to the seat 1, and the child seat mechanism 100 is switched to the sitting position. Figure 8 Shown in folded state.

[0072] The child seat mechanism 100 has the following advantages: the child seat mechanism 100 has multiple usage states, including a zero gravity state, in which the heart and knee heights of the occupant are substantially the same, the occupant has optimal comfort in this posture, and it is easy to use, allowing the child in the child seat mechanism 100 to have multiple postures; the child seat mechanism 100 can be switched between multiple usage states such as sitting, zero gravity and lying by operating the backrest 2, and the switching 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 it is easy to use.

[0073] 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.

[0074] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. If a definition used herein conflicts or is inconsistent with a definition in other public documents, the definition used herein shall prevail.

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

[0076] As shown in this specification and claims, the terms "comprises" and "includes" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements.

[0077] It is further understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar thereto. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0078] It is further understood that the terms "first", "second", etc. are used to describe various information, but such 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 indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, 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.

[0079] 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 protection scope of the present invention.

Claims

1. A child seat mechanism, characterized in that: The utility model comprises a base, a seat and a backrest capable of rotating relative to the seat, wherein 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; The child seat mechanism further comprises a seat drive device, wherein the seat drive device comprises a backrest connecting rod connected to the backrest, and the backrest connecting rod is rotatably connected to the base; The seat includes a seat rod, and the seat rod is rotatably connected to the base; The seat rod and the backrest connecting rod are slidably and rotatably connected to drive the seat rod to rotate when the backrest connecting rod rotates with the backrest, so that the child seat mechanism is converted to a zero-gravity state. In the zero-gravity state, the front part of the seat is higher than the rear part thereof, the first plane has a first angle greater than zero relative to the horizontal plane, and the second plane has a second angle greater than zero relative to the horizontal plane, so that the heart and knees of the occupant are at the same height.

2. The child seat mechanism according to claim 1, characterized in that: One of the seat rod and the backrest connecting rod is provided with a track groove, and the other is provided with an adjustment pin, which is slidably inserted into the track groove so that the seat rod and the backrest connecting rod can be slidably and rotatably connected through the adjustment pin.

3. The child seat mechanism according to claim 2, characterized in that: The track groove is arranged on the seat rod and has a front end portion, a rear end portion and a corner portion located between the front end portion and the rear end portion, the corner portion is located on the rear side of the front end portion and on the upper side of the rear end portion, and the adjustment pin is located in the corner portion when the child seat mechanism is in a zero gravity state; the child seat mechanism also has a sitting state and a lying state, and in the zero gravity state, the angle between the first plane and the second plane is greater than the angle between the first plane and the second plane in the sitting state, and is smaller than the angle between the first plane and the second plane in the lying state, and the adjustment pin is located in the front end portion when the child seat mechanism is in the lying state, and the adjustment pin is located in the rear end portion when the child seat mechanism is in the sitting state.

4. The child seat mechanism according to claim 2, characterized in that: The seat driving device also includes a locking piece, which is movably arranged on the backrest connecting rod. The base is provided with a plurality of locking grooves arranged in sequence along the outer circumferential direction of the base. When the child seat mechanism is in the zero gravity state, the locking piece is inserted into one of the locking grooves. When the locking piece and the locking groove are disengaged, the child seat mechanism is allowed to change state.

5. The child seat mechanism according to claim 4, characterized in that: The locking piece is slidably mounted on the backrest, and a slide groove is provided on the backrest connecting rod. In the zero gravity state, the locking piece is inserted into the slide groove and one of the lock grooves; the child seat mechanism also has a folding state. In the folding state, the backrest and the seat are close to each other, and the locking piece also has a position that is disengaged from the slide groove and the lock 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 according to claim 5, characterized in that: The locking member comprises a sliding pin, the plurality of locking grooves comprise a first locking groove, a second locking groove and a third locking groove which are sequentially arranged along the outer peripheral direction of the base, the first locking groove, the second locking groove and the third locking groove respectively extending inward from the outer peripheral edge of the base to allow the sliding pin to enter and exit; the sliding groove extends downward 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 groove extending along the length direction thereof, the sliding pin is slidably arranged in the mounting groove, and the length of the mounting groove is greater than the length of the sliding groove; When the child seat mechanism is in a sitting position, the sliding pin is inserted into the first locking groove, the sliding groove and the mounting groove; when the child is in the zero gravity state, the sliding pin is inserted into the second locking groove, the sliding groove and the mounting groove; when the child seat mechanism is in a lying position, the sliding pin is inserted into the third locking groove, the sliding groove and the mounting groove; During the conversion process of the child seat mechanism between the sitting state, the zero gravity state and the lying state, the sliding pin is disengaged from each locking groove and inserted into the sliding groove and the mounting groove; During the folding or unfolding process of the child seat mechanism, the sliding pin is disengaged from each locking groove and the sliding groove to allow the backrest to rotate relative to the backrest connecting rod.

7. The child seat mechanism according to claim 1, characterized in that: The child seat mechanism also includes a leg support that can rotate 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 calf of the occupant.

8. The child seat mechanism according to claim 7, characterized in that: The leg support driving 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.

9. The child seat mechanism according to claim 8, 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 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 rod, and the second push rod can slide through the sliding sleeve in the front-rear direction.

10. A carrier, characterized in that: It comprises the child seat mechanism as claimed in any one of claims 1 to 9, wherein the first angle is 18 to 40 degrees, and the second angle is 35 to 55 degrees.

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