An infant carrier

Abstract

The utility model relates to the technical field of baby's appliances, propose a baby carrier, including frame and its handle subassembly, still include seat back subassembly and linkage folding mechanism, seat back subassembly detachable installation is on the frame and includes backrest and seat board, linkage folding mechanism includes the locking mechanism of setting between handle subassembly, seat back subassembly and frame, and the unlocking piece of setting on handle subassembly, operation the unlocking piece and rotate handle subassembly, make frame drive locking mechanism unlock in the folding process, and backrest and seat board follow the synchronous folding of handle subassembly's rotation. Through setting the unlocking piece on handle subassembly, operation unlocking piece and rotate handle subassembly can drive frame folding and synchronous folding seat back subassembly, completely fit user's holding handle use habit, need first operation unlocking piece to remove the lock before folding, avoid accidental folding risk, improve security. Handle subassembly as folding original power, realize whole car, handle subassembly and seat back subassembly synchronous linkage folding.

Description

Technical Field

[0001] This utility model relates to the technical field of baby products, specifically to a baby carrier. Background Technology

[0002] Foldable strollers often feature a linked folding function for easy storage. Existing technology, such as prior art document CN215851427U, discloses a linked folding scheme. The folding process begins with the user directly rotating the backrest forward. When the backrest rotates to a certain angle, a first locking mechanism is triggered, allowing the seat and backrest to flip relative to the frame as a whole. During this overall flipping process, the transmission component on the seat presses against the edge of the adapter fixed to the frame, triggering a second locking mechanism to unlock. Finally, the backrest pushes the unlocked armrests to complete the folding. However, the user's usual inertia is towards the handlebars on the frame. Therefore, a safer and more user-friendly folding scheme is needed. An ideal design should ensure that the first step before starting the folding action is to release the main locking state, and that the operation of the handlebar assembly serves as the driving force for the synchronized folding of the entire stroller and seat, thereby improving the intuitiveness, safety, and overall integrity of the operation.

[0003] Therefore, further improvements are necessary. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide an infant vehicle that overcomes the shortcomings of the prior art. By setting the unlocking piece on the handle assembly, operating the unlocking piece and rotating the handle assembly can drive the frame to fold and simultaneously fold the seat and back assembly, which perfectly matches the user's habit of holding the handle. Before folding, the unlocking piece must be operated to unlock it, avoiding the risk of accidental folding and improving safety.

[0005] An infant carrier designed for this purpose includes an unfoldable and foldable frame and its handle assembly, and further includes: The seat back assembly is detachably mounted on the frame and includes a backrest and seat that can rotate relative to each other. The linkage folding mechanism includes a locking mechanism disposed between the handlebar assembly, the seat back assembly and the frame, and an unlocking component disposed on the handlebar assembly; Operate the unlocking mechanism and rotate the handlebar assembly to unlock the locking mechanism during the folding process, and the backrest and seat will fold in sync with the rotation of the handlebar assembly.

[0006] The locking mechanism includes a first locking mechanism for locking the handlebar assembly to the frame; After the first locking mechanism is unlocked by operating the unlocking component, the folding handle assembly can then sequentially release the locking state of the backrest and seat, allowing them to fold down gradually.

[0007] The first locking mechanism includes a locking block, and the frame is provided with a frame joint having a locking hole; The handlebar assembly includes a handlebar joint, which is rotatably connected to the frame joint, and a locking block is elastically and movably disposed within the handlebar joint. When the handle assembly is unfolded, the lock block is inserted into the keyhole to lock; when the unlocking component is operated, it can trigger the lock block to disengage from the keyhole to unlock.

[0008] The locking mechanism also includes a second locking mechanism for locking the backrest and seat plate; The second locking mechanism includes a locking tooth and a locking groove. A flexible pusher is provided in the frame joint. The locking groove, frame joint, pusher and handle joint are coaxially arranged. When the handle assembly is folded, the handle joint unlocks towards the locking groove.

[0009] The handle joint is provided with a slanted groove, and the pusher is provided with slanted teeth. During the rotation and folding of the handle assembly, the handle joint drives the pusher to move through the slanted groove and slanted teeth.

[0010] The backrest folds down by its own weight or manually after the second locking mechanism is unlocked. Alternatively, a drive spring is provided at the mating position between the backrest and the seat, and the backrest folds down automatically by the drive spring after the second locking mechanism is unlocked.

[0011] The backrest is provided with a backrest joint, and the seat plate is provided with a seat plate joint. The backrest joint and the seat plate joint are rotatably connected. The backrest joint, seat joint, locking groove, frame joint, pusher and handle joint are coaxially arranged, and the locking groove is elastically axially movable between the backrest joint and the seat joint, and the locking tooth is arranged in the backrest joint. A drive spring is provided between the backrest joint and the seat joint to drive the backrest joint to fold automatically.

[0012] The locking mechanism includes a third locking mechanism for locking the seat plate to the frame; The third locking mechanism includes a locking pin that is flexibly and movable on the frame, and a locking groove that is disposed on the frame joint and is inserted into and locked to the locking pin. The locking pin is provided with a connector, and the backrest joint is provided with a linkage inclined surface. When the backrest rotates after the second locking mechanism is unlocked, the linkage inclined surface pushes the connector to make the locking pin move in the direction of disengaging from the locking groove, thereby unlocking the third locking mechanism.

[0013] When the unlocking component is connected to the locking block, it can achieve one-step unlocking in the unfolded state of the vehicle frame; Alternatively, the handle assembly may be equipped with an operating mechanism to prevent one-step unlocking, so that the lock block can only be disengaged from the keyhole after the operating mechanism and the unlocking component are operated in sequence according to a set order.

[0014] The operating mechanism includes a telescopic movable block assembly and a drive block. The movable block assembly is movably disposed within the handle assembly, and the drive block is connected to the movable block assembly in a transmission manner. The movable block assembly includes a fastening element, which is connected to the unlocking element via a transmission connection. When the driving block drives the movable block assembly to move until the fastening element is engaged with the locking block, the unlocking element moves by driving the fastening element after the operation.

[0015] The fastening element is elastically rotatably mounted on the movable block assembly. When the driving block drives the movable block assembly to move, it triggers the fastening element to rotate, causing the fastening element to engage or disengage from the locking block.

[0016] Compared with the prior art, the infant carrier of the above embodiments has the following beneficial technical effects: By placing the unlocking mechanism on the handlebar assembly, operating the unlocking mechanism and rotating the handlebar assembly drives the frame to fold and simultaneously folds the seat and backrest assembly. This perfectly matches the user's handling habits. Before folding, the unlocking mechanism must be operated to release the lock, avoiding the risk of accidental folding and improving safety. The handlebar assembly serves as the folding power source, enabling the entire bicycle, handlebar assembly, and seat and backrest assembly to fold synchronously.

[0017] The mechanism, in conjunction with the unlocking device, requires a specific sequence of operations to unlock, effectively preventing accidental or unintentional unlocking by children and significantly enhancing safety. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the unfolded frame of the first embodiment of this utility model.

[0021] Figure 2 This is a three-dimensional structural diagram of the frame during the folding process of the first embodiment of this utility model.

[0022] Figure 3 This is a three-dimensional structural diagram of the frame after it is fully folded according to the first embodiment of this utility model.

[0023] Figure 4This is a three-dimensional structural diagram showing the disassembled assembly of the vehicle frame according to the first embodiment of this utility model.

[0024] Figure 5 This is a schematic diagram of the first locking mechanism in the locked state according to the first embodiment of this utility model.

[0025] Figure 6 This is a structural diagram of the first locking mechanism in the unlocked state according to the first embodiment of this utility model.

[0026] Figure 7 This is a schematic diagram of the transmission connection between the unlocking component and the fastening component in the first embodiment of this utility model.

[0027] Figure 8 This is a schematic cross-sectional view of the frame joint of the first embodiment of this utility model.

[0028] Figure 9 This is a schematic diagram showing the disassembled structure of the backrest joint and locking groove in the first embodiment of this utility model.

[0029] Figure 10 This is a schematic diagram of the second locking mechanism in the locked state according to the first embodiment of this utility model.

[0030] Figure 11 This is a schematic diagram of the structure of the handle joint and the pusher component in the first embodiment of this utility model.

[0031] Figure 12 This is a schematic diagram of the structure of the backrest joint pushing the connecting member during rotation, according to the first embodiment of this utility model.

[0032] Figure 13 This is a structural diagram of the unlocked state of the third locking mechanism in the first embodiment of this utility model.

[0033] Figure 14 This is a schematic diagram of the operating mechanism in its initial state according to the second embodiment of the present invention.

[0034] Figure 15 This is a schematic diagram of the structure of the operating mechanism after it has been moved according to the second embodiment of this utility model.

[0035] Figure 16 This is a schematic diagram of the internal structure of the handle assembly in the second embodiment of this utility model.

[0036] Figure 17 This is a schematic diagram of the unfolded state of the seat back assembly after it is installed in different directions on the vehicle frame, according to another embodiment of this utility model.

[0037] Figure 18 for Figure 17 A structural diagram of the folding process.

[0038] Figure 19for Figure 17 A schematic diagram of the structure after it is fully folded. Detailed Implementation

[0039] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0040] First embodiment: See Figures 1-19 An infant vehicle includes an unfoldable and foldable frame 100 and a handlebar assembly 1, and further includes: The seat back assembly 2 is detachably mounted on the frame 100 and includes a backrest 201 and a seat plate 202 that can rotate relative to each other. The linkage folding mechanism includes a locking mechanism disposed between the handlebar assembly 1, the seat back assembly 2 and the frame 100, and an unlocking component 6 disposed on the handlebar assembly 1; Operate the unlocking component 6 and rotate the handle assembly 1 so that the frame 100 drives the locking mechanism to unlock during the folding process, and the backrest 201 and seat 202 fold in sync with the rotation of the handle assembly 1.

[0041] By placing the unlocking piece 6 on the handlebar assembly 1, operating the unlocking piece 6 and rotating the handlebar assembly 1 will drive the frame to fold 100 degrees and simultaneously fold the seat and backrest assembly 2. This perfectly matches the user's gripping habits. Before folding, the unlocking piece 6 must be operated to unlock it, avoiding the risk of accidental folding and improving safety. The handlebar assembly 1 serves as the folding power source, enabling the entire vehicle, handlebar assembly 1, and seat and backrest assembly 2 to fold synchronously.

[0042] Furthermore, the locking mechanism includes a first locking mechanism 3 for locking the handlebar assembly 1 to the frame 100; After the first locking mechanism 3 is unlocked by operating the unlocking component 6, the folding handle assembly 1 can be used to release the locking state of the backrest 201 and the seat plate 202 in sequence, so that the two can be gradually folded.

[0043] First, the unlocking component 6 unlocks the handlebar assembly 1 and the first locking mechanism 3 of the frame 100. Then, the handlebar assembly 1 is folded to sequentially release the locks on the backrest 201 and the seat plate 202, forming an orderly unlocking and folding process. This design avoids component loss of control caused by the simultaneous unlocking of various locking mechanisms, improves folding stability, and prevents safety hazards caused by accidental unlocking.

[0044] Furthermore, the first locking mechanism 3 includes a locking block 303, and a frame joint 20 with a locking hole 2001 is provided on the frame 100; The handlebar assembly 1 includes a handlebar joint 101, which is rotatably connected to the frame joint 20, and a locking block 303 is elastically and movably disposed within the handlebar joint 101. When the handle assembly 1 is unfolded, the locking block 303 is inserted into the lock hole 2001 to lock; when the unlocking member 6 is operated, it can trigger the locking block 303 to disengage from the lock hole 2001 to unlock.

[0045] The unlocking component 6 can be connected to the locking block 303 via a steel wire or pull rope. The locking block 303 is equipped with a locking spring 12 that has elastic return. The locking block 303 has a receiving groove, and the locking spring 12 is installed in the receiving groove. The locking block 303 also has a semi-circular groove. The handle joint 101 has a through hole for inserting a connecting pin. The connecting pin is inserted into the through hole and the semi-circular groove. One end of the locking spring 12 abuts against the receiving groove, and the other end abuts against the pin. When the locking block 303 moves, it compresses the locking spring 12. When the locking spring 12 releases its elastic force, the locking block 303 is inserted into the lock hole 2001. The first locking mechanism 3 adopts a cooperative structure of the frame joint 20, the locking block 303, and the lock hole 2001. The handle assembly 1 is rotatably connected to the frame joint 20 via the handle joint 101. When locked, the locking block 303 is inserted into the lock hole 2001. The connection is firm and reliable, which can effectively prevent the handle assembly 1 from rotating accidentally when driving or unfolded.

[0046] Furthermore, the locking mechanism also includes a second locking mechanism 4 for locking the backrest 201 and the seat plate 202; The second locking mechanism 4 includes a locking tooth 401 and a locking groove 402. A pusher 7 that is elastically movable is provided in the frame joint 20. The locking groove 402, the frame joint 20, the pusher 7 and the handle joint 101 are coaxially arranged. When the handle assembly 1 is folded, the handle joint 101 rotates and drives the pusher 7 to move toward the locking groove 402, thereby forcing the locking groove 402 to disengage from the locking tooth 401, thus unlocking the second locking mechanism 4.

[0047] Furthermore, the frame joint 20 includes an outer joint and an inner joint. The outer joint is rotatably connected to the handlebar joint 101, and the locking hole 2001 is provided on the outer joint. The inner joint is coaxially connected to the seat plate joint 204. A pusher 7, a sliding member 13, and a first spring 14 are provided between the outer joint and the inner joint. When the handlebar assembly 1 is folded, the pusher 7 rotates and moves axially, forcing the sliding member 13 to squeeze the first spring 14. An axially movable locking groove 402 is provided between the backrest joint 203 and the seat plate joint 204. Each sliding member 13 is provided with a connecting post 16 passing through the corresponding component's through hole. The locking groove 402 is also provided with a linkage post 15 passing through the corresponding component. When the sliding member 13 moves in the unlocking direction of the second locking mechanism 4, the connecting post 16 of the sliding member 13 abuts against the linkage post 15, causing the sliding member 13 to push the locking groove 402 to move axially, thereby causing the locking groove 402 to disengage from the locking tooth 401.

[0048] Furthermore, a second spring 17 is provided between the locking groove 402 and the backrest joint 203.

[0049] Furthermore, the handle joint 101 is provided with a groove 102, and the pusher 7 is provided with a helical tooth 701. During the rotation and folding of the handle assembly 1, the handle joint 101 drives the pusher 7 to move through the groove 102 and the helical tooth 701.

[0050] Furthermore, the inclined groove 102 of the handle joint 101 cooperates with the inclined tooth 701 of the pusher 7, which can convert the rotational motion of the handle assembly 1 into the axial movement of the pusher 7.

[0051] Furthermore, the backrest 201 folds down by its own weight or manually after the second locking mechanism 4 is unlocked. Alternatively, a drive spring 9 is provided at the mating position between the backrest 201 and the seat plate 202, and the backrest 201 folds down automatically by the drive spring 9 after the second locking mechanism 4 is unlocked. One end of the drive spring 9 abuts against the backrest joint 203, and the other end of the drive spring 9 abuts against the seat plate joint 204.

[0052] Furthermore, when folding the handle assembly 1, the handle joint 101 drives the pusher 7 to unlock the second locking mechanism 4, without the need for additional manual operation of the backrest 201, and the linkage is achieved entirely by relying on the folding process of the handle assembly 1.

[0053] Furthermore, the backrest 201 is provided with a backrest joint 203, and the seat plate 202 is provided with a seat plate joint 204, with the backrest joint 203 and the seat plate joint 204 being rotatably connected. Furthermore, the backrest joint 203, seat plate joint 204, locking groove 402, frame joint 20, pusher 7 and handle joint 101 are coaxially arranged, and the locking groove 402 is elastically axially movable between the backrest joint 203 and the seat plate joint 204, and the locking tooth 401 is arranged in the backrest joint 203. Furthermore, a drive spring 9 for automatically folding the backrest joint 203 is provided between the backrest joint 203 and the seat joint 204.

[0054] Furthermore, the locking mechanism includes a third locking mechanism 5 for locking the seat plate 202 and the frame 100; The third locking mechanism 5 includes a locking pin 501 that is elastically movably disposed on the frame 100, and a locking groove 502 disposed on the frame joint 20 and engaged with the locking pin 501 for locking. The locking pin 501 is provided with a connector 503, and the backrest joint 203 is provided with a linkage inclined surface 205. When the backrest 201 rotates after the second locking mechanism 4 is unlocked, the linkage inclined surface 205 pushes the connector 503 to make the locking pin 501 move in the direction of disengaging from the locking groove 502, thereby unlocking the third locking mechanism 5.

[0055] The frame 100 is provided with a support rod for supporting the seat plate 202. The locking pin 501 is axially movable in the support rod, so when the locking pin 501 is disengaged from the locking groove 502, the support rod can rotate, and the seat plate 202 can also rotate and fold.

[0056] Furthermore, the seat plate 202 is provided with a clearance groove for the movement trajectory of the connecting member 503.

[0057] Furthermore, the seat plate 202 is equipped with a spring and a rod corresponding to the locking pin 501. The rod can be a fixed length rod, and the spring abuts against the rod and the locking pin 501 respectively. Alternatively, the rod can be an elastic telescopic rod, with the spring installed inside the rod, and the locking pin 501 abuts against the elastic telescopic rod.

[0058] Furthermore, when the unlocking component 6 is connected to the locking block 303, it enables one-step unlocking even when the frame 100 is in the unfolded state. The unlocking component 6 allows for one-step unlocking, meeting the user's need for quick storage and offering efficient and convenient operation.

[0059] When the infant carrier is in the unfolded state, the locking block 303 of the first locking mechanism 3 is inserted into the locking hole 2001 of the frame joint 20 to lock the handle assembly 1 and the frame 100; the locking groove 402 of the second locking mechanism 4 engages with the locking tooth 401 to lock the backrest 201 and the seat plate 202; the locking pin 501 of the third locking mechanism 5 is inserted into the locking groove 502 of the frame joint 20 to lock the seat plate 202 and the frame 100 (the support rod supporting the seat plate 202 cannot rotate freely), and all components remain firmly connected.

[0060] When folding is required, if it is a one-step unlocking design, the unlocking part 6 on the handle assembly 1 is operated directly to trigger the locking block 303 to disengage from the lock hole 2001 and release the first locking mechanism 3. If it is a sequential operation design, the driving block 11 is first driven to move the telescopic movable block assembly 10 so that the fastening part 1002 is fastened to the locking block 303. Then the unlocking part 6 is operated to drive the fastening part 1002 to disengage the locking block 303 from the lock hole 2001 and complete the unlocking of the first locking mechanism 3.

[0061] Then, rotating the handle assembly 1 causes the handle joint 101 to rotate. The inclined groove 102 on the handle joint 101 engages with the inclined tooth 701 of the pusher 7, driving the pusher 7 to move towards the locking groove 402. The pusher 7 forces the locking groove 402 to move axially, disengaging from the locking tooth 401 and releasing the second locking mechanism 4. The unlocking member 6 is press-type disposed on the handle assembly 1.

[0062] After the second locking mechanism 4 is unlocked, the backrest 201 begins to rotate under its own weight or by the driving force of the drive spring 9. The backrest 201 drives the backrest joint 203 to rotate accordingly. The linkage inclined surface 205 provided on the backrest joint 203 pushes the connecting piece 502 to move. The connecting piece 502 drives the locking pin 501 to move in the direction of disengaging from the locking groove 502, so that the locking pin 501 disengages from the locking groove 502, releasing the third locking mechanism 5. The seat plate 202 then folds down. During the unlocking and folding process of the handle assembly 1, the locking mechanism sequentially triggers the unlocking and folding of the backrest 201 and the seat plate 202.

[0063] Second embodiment: See Figures 14-16 One infant carrier differs from the first embodiment in that the handle assembly 1 is equipped with an operating mechanism to prevent one-step unlocking. The locking block 303 can only disengage from the lock hole 2001 after the operating mechanism and the unlocking component 6 are operated in a set sequence. The operating mechanism, in conjunction with the unlocking component 6, requires a set sequence of operation to unlock, effectively preventing accidental or unintentional unlocking by children, thus significantly improving safety.

[0064] The operating mechanism includes a telescopic movable block assembly 10 and a drive block 11. The movable block assembly 10 is movably disposed in the handle assembly 1, and the drive block 11 is connected to the movable block assembly 10 in a transmission manner. The movable block assembly 10 includes a fastening member 1002, which is connected to the unlocking member 6 via a transmission connection. When the driving block 11 drives the movable block assembly 10 to move to the point where the fastening member 1002 is fastened to the locking block 303, the unlocking member 6 is moved by driving the fastening member 1002 after the operation.

[0065] The movable block assembly 10 includes a laterally elastically telescopic positioning block 1001. The handle assembly 1 is provided with a pending position 103 and a pre-locked position 104. The positioning block 1001 is connected to the drive block 11 in a transmission manner. The drive block 11 drives the positioning block 1001 to reciprocate between the pending position 103 and the pre-locked position 104. When the positioning block 1001 moves to the pending position 103, the fastening member 1002 separates from the locking block 303, and the locking block 303 is provided with a locking spring 12, so that the locking block 303 is elastically locked on the lock hole 2001 when the frame 100 is unfolded. When the positioning block 1001 moves to the pre-locking position 104, the fastening member 1002 and the locking block 303 are fastened together.

[0066] The drive block 11 is slidably mounted on the inner side of the handle assembly 1. The handle assembly 1 has a slider 18 fixedly connected to the drive block 11. The slider 18 is connected to the positioning block 1001 via a steel wire or pull rope. A compression spring 19 is provided between the positioning block 1001 and the inner side of the handle assembly 1. When the drive block 11 is pressed, the slider 18 slides, causing the positioning block 1001 to move laterally and compress the compression spring 19. This allows the movable block assembly 10 to move as a whole. When the positioning block 1001 is aligned with the corresponding position, the drive block 11 can be released.

[0067] The movable block assembly 10 also includes a movable seat 1005 and a transmission seat 1006. A positioning block 1001 is mounted on the movable seat 1005, and a fastening member 1002 is rotatably mounted on the transmission seat 1006. The movable seat 1005 and the transmission seat 1006 are slidably connected. The movable seat 1005 has a sliding groove, and the transmission seat 1006 has a round hole for inserting a connecting pin. The connecting pin is inserted into the round hole and the sliding groove, and also causes the fastening member 1002 to be rotatably connected to the transmission seat 1006. A spring is provided between the transmission seat 1006 and the movable seat 1005, allowing the transmission seat 1006 and the fastening member 1002 to move on the movable seat 1005. The movable seat 1005 has an opening groove corresponding to the moving position of the fastening member 1002. The unlocking member 6 is connected to the transmission seat 1006 via a steel wire or pull rope. The unlocking member 6 is press-type mounted on the handle assembly 1.

[0068] The operating mechanism achieves orderly unlocking through the cooperation of the telescopic movable block assembly 10, the drive block 11, and the fastening part 1002. The user must first pull the drive block 11 to move the telescopic movable block assembly 10 so that the fastening part 1002 and the lock block 303 are engaged before the unlocking part 6 can be operated to complete the unlocking. The dual operation steps further eliminate the risk of misoperation and enhance security.

[0069] The fastening element 1002 is elastically rotatably disposed in the movable block assembly 10. When the driving block 11 drives the movable block assembly 10 to move, it triggers the fastening element 1002 to rotate, so that the fastening element 1002 engages or disengages from the locking block 303. One end of the fastening element 1002 extends toward the positioning block 1001. When the positioning block 1001 retracts, it triggers the fastening element 1002 to rotate.

[0070] Specifically: the handle assembly 1 is a telescopic handle structure, which includes a fixed part rotatably connected to the frame 100 and a telescopic handle mounted on the fixed part. The movable block assembly 10 is mounted on the movable handle, the drive block 11 and the unlocking member 6 are mounted on the movable handle, and the pending position 103 and the pre-locked position 104 are both mounted on the fixed part. The fixed part has multiple pending positions 103. When the extension length of the handle assembly 1 is locked, the positioning block 1001 is located in one of the pending positions 103. When extension is required, the positioning block 1001 retracts and triggers the buckling member 1002 to rotate, and the movable handle can extend and retract, driving the movable block assembly 10 to move towards the pre-locked position 104. When the positioning block 1001 is aligned with the pre-locked position 104, the drive block 11 is released, the positioning block 1001 extends elastically, the buckling member 1002 rotates elastically to reset and buckles with the locking block 303.

[0071] All other parts not described herein are the same as in the first embodiment and will not be described in detail here.

[0072] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0073] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0074] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0075] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0076] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0077] It should also be understood that, in interpreting the connection or positional relationships of components, although not explicitly described, connection and positional relationships are interpreted to include a range of error, which should be within the acceptable deviation range of a specific value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0078] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An infant carrier comprising a frame (100) capable of unfolding and folding and a handle assembly (1), characterized in that, Also includes: The seat back assembly (2) is detachably mounted on the frame (100) and includes a backrest (201) and a seat plate (202) that can rotate relative to each other. The linkage folding mechanism includes a locking mechanism disposed between the handle assembly (1), the seat back assembly (2) and the frame (100), and an unlocking component (6) disposed on the handle assembly (1). Operate the unlocking component (6) and rotate the handle assembly (1) so that the frame (100) drives the locking mechanism to unlock during the folding process, and the backrest (201) and the seat plate (202) fold in sync with the rotation of the frame (100).

2. The infant carrier according to claim 1, characterized in that: The locking mechanism includes a first locking mechanism (3) for locking the handle assembly (1) to the frame (100). After the first locking mechanism (3) is unlocked by operating the unlocking component (6), the handle assembly (1) can be folded in turn to release the locking state of the backrest (201) and the seat plate (202) in sequence, so that the two can be gradually folded.

3. The infant carrier according to claim 2, characterized in that: The first locking mechanism (3) includes a locking block (303), and the frame (100) is provided with a frame joint (20) having a locking hole (2001). The handle assembly (1) includes a handle joint (101), which is rotatably connected to the frame joint (20), and the locking block (303) is elastically and movably disposed within the handle joint (101); When the handle assembly (1) is unfolded, the locking block (303) is inserted into the lock hole (2001) to lock; when the unlocking component (6) is operated, it can trigger the locking block (303) to disengage from the lock hole (2001) to unlock.

4. The infant carrier according to claim 3, characterized in that: The locking mechanism further includes a second locking mechanism (4) for locking the backrest (201) and the seat (202). The second locking mechanism (4) includes a locking tooth (401) and a locking groove (402). The frame joint (20) is provided with a flexible pusher (7). The locking groove (402), the frame joint (20), the pusher (7) and the handle joint (101) are coaxially arranged. When the handle assembly (1) is folded, the handle joint (101) rotates and drives the pusher (7) to move toward the locking groove (402), thereby forcing the locking groove (402) to disengage from the locking tooth (401), thus unlocking the second locking mechanism (4).

5. The infant carrier according to claim 4, characterized in that: The handle joint (101) is provided with a groove (102), and the pusher (7) is provided with a tooth (701). During the rotation and folding of the handle assembly (1), the handle joint (101) drives the pusher (7) to move through the groove (102) and the tooth (701).

6. The infant carrier according to claim 4, characterized in that: The backrest (201) folds down by its own weight or manually after the second locking mechanism (4) is unlocked. Alternatively, a drive spring (9) is provided at the mating position between the backrest (201) and the seat plate (202), and the backrest (201) folds down automatically by the drive spring (9) after the second locking mechanism (4) is unlocked.

7. The infant carrier according to claim 4, characterized in that: The backrest (201) is provided with a backrest joint (203), and the seat plate (202) is provided with a seat plate joint (204). The backrest joint (203) and the seat plate joint (204) are rotatably connected. The backrest joint (203), the seat joint (204), the locking groove (402), the frame joint (20), the pusher (7), and the handle joint (101) are coaxially arranged, and the locking groove (402) is elastically axially movable between the backrest joint (203) and the seat joint (204), and the locking tooth (401) is arranged inside the backrest joint (203); A drive spring (9) for automatically folding the backrest joint (203) is provided between the backrest joint (203) and the seat joint (204).

8. The infant carrier according to claim 7, characterized in that: The locking mechanism includes a third locking mechanism (5) for locking the seat plate (202) and the frame (100). The third locking mechanism (5) includes a locking pin (501) that is elastically movably disposed on the frame (100) and a locking groove (502) disposed on the frame joint (20) and engaged and locked with the locking pin (501). The locking pin (501) is provided with a connector (503), and the backrest joint (203) is provided with a linkage inclined surface (205). When the backrest (201) rotates after the second locking mechanism (4) is unlocked, the linkage inclined surface (205) pushes the connector (503) to make the locking pin (501) move in the direction of disengaging from the locking groove (502), thereby unlocking the third locking mechanism (5).

9. The infant carrier according to claim 3, characterized in that: When the unlocking component (6) is connected to the locking block (303) in a transmission connection, it can achieve one-step unlocking in the unfolded state of the frame (100); Alternatively, the handle assembly (1) is provided with an operating mechanism to prevent one-step unlocking, and the lock block (303) can only disengage from the lock hole (2001) after the operating mechanism and the unlocking component (6) are operated in sequence according to a set order.

10. The infant carrier according to claim 9, characterized in that: The operating mechanism includes a telescopic movable block assembly (10) and a drive block (11). The movable block assembly (10) is movably disposed within the handle assembly (1), and the drive block (11) is connected to the movable block assembly (10) in a transmission manner. The movable block assembly (10) includes a fastening member (1002), which is connected to the unlocking member (6) in a transmission manner. The driving block (11) drives the movable block assembly (10) to move to the point where the fastening member (1002) is engaged with the locking block (303). After the operation, the unlocking member (6) is moved by driving the fastening member (1002). The fastening element (1002) is elastically rotatably disposed on the movable block assembly (10). When the driving block (11) drives the movable block assembly (10) to move, it triggers the fastening element (1002) to rotate, so that the fastening element (1002) engages or disengages from the locking block (303).

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