A child seat and stroller that can be unlocked by linking to the vehicle frame

Abstract

This invention discloses a child seat and stroller with a linked frame that can be unlocked. When folding the child seat, only the backrest locking mechanism needs to be manually released to allow the backrest to fold forward relative to the seat until it is close to the seat. Therefore, this invention requires only one manual operation to release the backrest lock and fold the child seat, reducing the risk of injury, especially the risk of the user getting their hand caught. It is also convenient to operate, easy to use, and safe and reliable. In addition, the movement for folding the child seat is intuitive, making it easy for users unfamiliar with the child seat to fold it quickly.

Description

[Technical Field]

[0001] This invention relates to the field of children's vehicle technology, and in particular to a child seat and children's vehicle that can be unlocked by linking to the frame. [Background Technology]

[0002] Strollers have become an indispensable product in the growth of infants and toddlers. Currently, many strollers on the market include a foldable stroller frame and a foldable child seat attached to the frame.

[0003] A disadvantage of known foldable child seats to date is that folding is very complex. In particular, folding a child seat requires multiple manual operations to change it from an unfolded (useful) state to a folded (non-useful) state. This makes these manual operations difficult to remember, not intuitive to perform, and mechanically complex.

[0004] In addition, when folding current children's strollers, it is necessary to first manually operate the backrest unlocking mechanism to release the lock on the backrest relative to the seat, then rotate the backrest towards the seat to fold the child seat, then rotate the entire child seat towards the stroller frame to fold it, then manually operate the frame unlocking mechanism to release the lock on the stroller frame, and then fold the stroller frame. This has the problems of multiple operation steps and inconvenience in folding.

[0005] Therefore, this invention addresses the aforementioned problems. [Summary of the Invention]

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a child seat and stroller that can be unlocked by linkage with the frame. By operating the backrest to fold forward relative to the seat to a preset angle, the linkage control mechanism can unlock the frame joint assembly. When the frame joint assembly is unlocked, the linkage control mechanism still keeps the seat relative to the external connecting seat locked. It has the characteristics of convenient operation and safety and reliability.

[0007] This invention is achieved through the following technical solution:

[0008] A child seat 2 with unlockable linkage to the frame includes: a seat portion 21; a backrest 22, the lower end of which is rotatably connected to the rear side of the seat portion 21, and a backrest locking mechanism 3 for locking the backrest 22 relative to the seat portion 21 between the backrest 22 and the seat portion 21; an external connecting seat 23, which is rotatably connected to the outside of the seat portion 21, and the seat portion 21 is connected to the frame joint assembly 14 via the external connecting seat 23; and a linkage control mechanism 4, which locks the seat portion 21 relative to the external connecting seat 23. The linkage control mechanism 4 is configured such that when the backrest 22 is folded forward relative to the seat portion 21 to a preset angle, the linkage control mechanism 4 can unlock the frame joint assembly 14, and when the frame joint assembly 14 is unlocked, the linkage control mechanism 4 still locks the seat portion 21 relative to the external connecting seat 23.

[0009] As described above, a child seat 2 that can be unlocked by linkage with the vehicle frame includes a seat 21 comprising a seat connecting seat 211 rotatably connected to an external connecting seat 23, and a backrest 22 comprising a backrest connecting seat 221 rotatably connected to the seat connecting seat 211; the linkage control mechanism 4 is located between the seat connecting seat 211, the backrest connecting seat 221 and the external connecting seat 23.

[0010] As described above, a child seat 2 with unlockable linkage to the frame includes a linkage control mechanism 4 comprising a seat locking hole 41 on a seat connecting seat 211 and a linkage control member 42 movably disposed on an external connecting seat 23. The upper end of the linkage control member 42 is configured to pass through the seat locking hole 41 and engage with the backrest connecting seat 221 when the seat portion 21 is in the unfolded use state. The lower end of the linkage control member 42 is configured to unlock the frame joint assembly 14. A linkage control elastic member 43 is provided between the linkage control member 42 and the external connecting seat 23 to keep the upper end of the linkage control member 42 inserted into the seat locking hole 41. The linkage control mechanism 4 also includes a linkage control drive unit 44 disposed on the backrest connecting seat 221 and engaged with the upper end of the linkage control member 42 when the backrest 22 is folded forward relative to the seat portion 21 to a preset angle, thereby driving the lower end of the linkage control member 42 to unlock the frame joint assembly 14.

[0011] As described above, a child seat 2 that can be unlocked by linkage with the vehicle frame also includes an armrest 24 that is rotatably connected to the seat portion 21 and located in front of the backrest 22. An armrest locking mechanism 25 is provided between the armrest 24 and the seat portion 21 for locking the armrest 24 relative to the seat portion 21.

[0012] As described above, in a child seat 2 that can be unlocked by linkage with the vehicle frame, the armrest locking mechanism 25 is configured to be unlocked by linkage with the backrest 22 when the backrest 22 is folded forward relative to the seat 21 to a preset angle.

[0013] As described above, a child seat 2 with unlockable linkage to the vehicle frame includes a seat portion 21 comprising a seat connecting seat 211 rotatably connected to an external connecting seat 23, a backrest 22 comprising a backrest connecting seat 221 rotatably connected to the seat connecting seat 211, and an armrest portion 24 comprising an armrest connecting seat 241 rotatably connected to the seat connecting seat 211. The armrest locking mechanism 25 includes an armrest locking notch 251 on the armrest connecting seat 241 and an armrest locking block 252 slidably disposed on the seat connecting seat 211 and capable of engaging with the armrest locking notch 251. An armrest locking elastic member 253 is provided between the armrest locking block 252 and the seat connecting seat 211 to keep the armrest locking block 252 elastically engaged with the armrest locking notch 251. The armrest locking block 252 is configured to be unlocked by the backrest 22 when the backrest 22 is folded forward relative to the seat portion 21 to a preset angle.

[0014] As described above, a child seat 2 that can be unlocked by linkage with the vehicle frame has an armrest unlocking drive part 254 on the backrest connecting seat 221, which is used to drive the armrest locking block 252 out of the armrest locking notch 251 when the backrest 22 is folded forward relative to the seat part 21 to a preset angle.

[0015] As described above, a child seat 2 that can be unlocked by linkage with the vehicle frame includes a seat 21 comprising a seat connecting seat 211 rotatably connected to an external connecting seat 23, and a backrest 22 comprising a backrest connecting seat 221 rotatably connected to the seat connecting seat 211. The backrest locking mechanism 3 includes a backrest locking notch 31 provided on the seat connecting seat 211 and a backrest locking block 32 slidably provided on the backrest connecting seat 221 and capable of being engaged in the backrest locking notch 31. A backrest locking elastic member is provided between the backrest locking block 32 and the backrest connecting seat 221 to keep the backrest locking block 32 elastically engaged in the backrest locking notch 31.

[0016] As described above, a child seat 2 that can be unlocked by linkage with the vehicle frame has a backrest 22 provided with a backrest unlocking component 33 for linkage with the backrest locking block 32 to exit the backrest locking notch 31. The backrest unlocking component 33 is connected to the backrest locking block 32 by a connecting strap.

[0017] The present invention also provides a children's stroller, comprising: a frame body 1, the frame body 1 including a front leg 11, a rear leg 12 and a push rod 13, the front leg 11, the rear leg 12 and the push rod 13 being rotatably connected by a frame joint assembly 14; a child seat 2, the child seat 2 including a seat portion 21, a backrest 22 and an external connecting seat 23, the lower end of the backrest 22 being rotatably connected to the rear side of the seat portion 21, and a backrest locking mechanism 3 for locking the backrest 22 relative to the seat portion 21 between the backrest 22 and the seat portion 21; An external connecting seat 23 is rotatably connected to the outside of the seat portion 21, and the seat portion 21 is connected to the frame joint assembly 14 via the external connecting seat 23; a linkage control mechanism 4 is provided, through which the seat portion 21 can be locked relative to the external connecting seat 23, and the linkage control mechanism 4 is configured such that when the backrest 22 is folded forward relative to the seat portion 21 to a preset angle, the linkage control mechanism 4 can unlock the frame joint assembly 14, and when the frame joint assembly 14 is unlocked, the linkage control mechanism 4 still keeps the seat portion 21 locked relative to the external connecting seat 23.

[0018] As described above, in a children's vehicle, the linkage control mechanism 4 is configured such that when the frame body 1 rotates and folds to a preset angle, the frame joint assembly 14 drives the linkage control mechanism 4 to release the locking state of the seat 21 relative to the external connecting seat 23.

[0019] As described above, in a children's stroller, the linkage control mechanism 4 is further configured such that when the push rod 13 is flipped downward to a preset angle, the frame joint assembly 14 drives the linkage control mechanism 4 to release the locking state of the seat 21 relative to the external connecting seat 23.

[0020] As described above, in a children's stroller, a frame rotation elastic element 146 is provided between the push rod 13 and the rear foot rod 12, which enables the push rod 13 to rotate relative to the rear foot rod 12.

[0021] As described above, in a children's bicycle, the frame joint assembly 14 includes a rear joint seat 142 located at the upper end of the rear footrest 12, a front joint seat 141 located at the upper end of the front footrest 11 and rotatably connected to the rear joint seat 142, and a handlebar joint seat 143 located at the lower end of the push rod 13 and rotatably connected to the rear joint seat 142. A linkage 144 is provided between the front joint seat 141 and the handlebar joint seat 143 for simultaneously rotating towards or away from each other. The frame joint assembly 14 also includes a frame locking mechanism 145 for locking the front joint seat 141 and / or the handlebar joint seat 143 relative to the rear joint seat 142. The frame locking mechanism 145 is configured to be unlocked by a linkage control mechanism 4.

[0022] As described above, in a children's vehicle, the front joint seat 141 and the rear joint seat 142 are hinged at point A, and the handle joint seat 143 and the rear joint seat 142 are hinged at point B; the front end of the linkage member 144 is eccentrically hinged to the front joint seat 141 at point C, and the rear end of the linkage member 144 is eccentrically hinged to the handle joint seat 143 at point D, and the line connecting points C and D forms an angle with the line connecting points A and B.

[0023] As described above, in a children's vehicle, a frame rotation elastic element 146 is provided between the handlebar joint seat 143 and the rear joint seat 142, which allows the handlebar joint seat 143 to rotate relative to the rear joint seat 142.

[0024] As described above, in a children's bicycle, the frame locking mechanism 145 includes a frame locking notch 1451 provided on the handlebar joint seat 143 and / or the front joint seat 141, and a frame locking block 1452 slidably provided on the rear joint seat 142 and capable of engaging with the frame locking notch 1451 to lock the front joint seat 141 and the handlebar joint seat 143 relative to the rear joint seat 142 in an unfolded state. A frame locking elastic member 1453 is provided between the frame locking block 1452 and the rear joint seat 142 to keep the frame locking block 1452 elastically engaged with the frame locking notch 1451. The frame locking block 1452 is configured to be unlocked by the linkage control mechanism 4.

[0025] As described above, the frame body 1 is also independently provided with a frame unlocking mechanism 5 for unlocking the frame joint assembly 14; the frame unlocking mechanism 5 includes a frame unlocking member 51 slidably disposed in the rear joint seat 142 and fixedly connected to the frame locking block 1452, the operating end of the frame unlocking member 51 is exposed outside the rear joint seat 142, a frame unlocking elastic member 52 is provided between the frame unlocking member 51 and the rear joint seat 142, and the frame unlocking member 51 is configured to be unlocked by the linkage control mechanism 4.

[0026] As described above, the frame body 1 of the children's vehicle is also independently provided with a frame unlocking mechanism 5 for unlocking the frame joint assembly 14.

[0027] As described above, in a children's vehicle, the external connecting seat 23 is detachably connected to the frame joint assembly 14, and an external locking and unlocking mechanism 6 is provided between the external connecting seat 23 and the frame joint assembly 14 for locking the external connecting seat 23 relative to the frame joint assembly 14 and for releasing the locked state of the external connecting seat 23 relative to the frame joint assembly 14.

[0028] As described above, in a children's stroller, the frame joint assembly 14 includes a rear joint seat 142 located at the upper end of the rear leg 12, a front joint seat 141 located at the upper end of the front leg 11 and rotatably connected to the rear joint seat 142, and a handle joint seat 143 located at the lower end of the push rod 13 and rotatably connected to the rear joint seat 142; the external locking and unlocking mechanism 6 includes an external locking notch 61 located on the rear joint seat 142 and a slidably mounted on the external connecting seat 23 that can engage with the external locking notch. The external locking block 62 of the 61 is provided with an external locking elastic member 63 between the external locking block 62 and the external connecting seat 23, which enables the external locking block 62 to be elastically engaged in the external locking notch 61; the external locking unlocking mechanism 6 also includes an external unlocking member 64 slidably provided on the external connecting seat 23, and the external unlocking member 64 is provided with an external unlocking drive part 641 for driving the external locking block 62 out of the external locking notch 61 when the external unlocking member 64 slides relative to the external connecting seat 23.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] 1. When folding the child seat of this invention, only the backrest locking mechanism needs to be manually released to allow the backrest to fold forward relative to the seat until it is flush with the seat. Therefore, this invention requires only one manual operation to release the backrest lock and fold the child seat, reducing the risk of injury, especially the risk of the user's hand being pinched. It is also convenient to operate, easy to use, and safe and reliable. In addition, the movement for folding the child seat is intuitive, making it easy for users unfamiliar with the child seat to fold it quickly.

[0031] 2. When the child seat of this invention is folded up by connecting it to the frame body, it is only necessary to manually release the locking mechanism of the backrest, fold the backrest forward relative to the seat to a preset angle, so that the linkage control mechanism can unlock the frame joint assembly. Then, the frame body rotates and folds up to the preset angle, so that the frame joint assembly drives the linkage control mechanism to release the locking state of the seat relative to the external connecting seat. At this time, the backrest and seat together rotate and fold towards the front footrest, thus completing the overall folding of the stroller. Therefore, this invention can fold the stroller simply and quickly. In addition, the movement for folding the stroller is intuitive, so that even users unfamiliar with the stroller can fold it quickly.

[0032] 3. For ease of folding, the armrest locking mechanism is configured to be unlocked by the backrest when the backrest is folded forward relative to the seat to a preset angle.

[0033] 4. A frame rotation elastic element is provided between the push rod and the rear foot rod, which enables the push rod to rotate relative to the rear foot rod. When the linkage control mechanism unlocks the linkage frame joint assembly, the frame rotation elastic element can give the push rod a rotational reset force to rotate in the direction of the rear foot rod, thereby facilitating the frame joint assembly to drive the linkage control mechanism to release the locking state of the seat relative to the external connecting seat.

[0034] 5. A linkage is provided between the front joint seat and the handle joint seat to enable the front joint seat and the handle joint seat to rotate simultaneously in opposite directions or in opposite directions. Compared with the gear-driven mechanism used in the prior art, the present invention uses a linkage to connect the parts, which can reduce assembly difficulties and manufacturing costs. [Attached Image Description]

[0035] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0036] Figure 1 This is one of the perspective views of the children's vehicle in the unfolded state in this invention.

[0037] Figure 2 This is the second perspective view of the children's vehicle in the unfolded state in this invention.

[0038] Figure 3 This is a side view of the children's vehicle in the unfolded state according to the present invention.

[0039] Figure 4 This is a side view of the folding process of the stroller in this invention.

[0040] Figure 5 This is a side view of the stroller in the folded state according to the present invention.

[0041] Figure 6 This is a perspective view of the children's stroller in the folded state according to the present invention.

[0042] Figure 7 This is a cross-sectional view of the external connector being connected to the frame joint assembly in this invention.

[0043] Figure 8 This is a perspective view of the child seat in the unfolded state according to the present invention.

[0044] Figure 9 This is a partial cross-sectional view of the child seat in this invention.

[0045] Figure 10 This is an exploded view of the child seat in this invention.

[0046] Figure 11 This is one of the perspective views of the backrest connecting seat in this invention.

[0047] Figure 12This is the second perspective view of the backrest connecting seat in this invention.

[0048] Figure 13 This is a cross-sectional view of the safety locking mechanism in this invention.

[0049] Figure 14 This is an exploded view of the safety locking mechanism in this invention.

[0050] Figure 15 This is a perspective view of the main frame of the vehicle in the unfolded state in this invention.

[0051] Figure 16 This is a partial structural diagram of the frame joint assembly in this invention.

[0052] Figure 17 This is an exploded view of the main body of the vehicle frame in this invention.

[0053] Figure 18 This is a schematic diagram of the position and structure of the frame locking mechanism in the locked state in this invention.

[0054] Figure 19 This is a schematic diagram of the position structure of the frame locking mechanism in the unlocked state in this invention.

[0055] Frame body 1. Front leg 11. Rear leg 12. Push rod 13. Frame joint assembly 14, front joint seat 141, rear joint seat 142, handlebar joint seat 143, linkage 144, frame locking mechanism 145, frame rotation elastic element 146. Frame locking notch 1451, frame locking block 1452, frame locking ramp 14521, frame locking elastic element 1453. Child seat 2. Seat section 21, seat connecting seat 211. Backrest 22, backrest connecting seat 221. External connecting seat 23. Armrest section 24, armrest connecting seat 241, armrest blocking block 2411. Armrest locking mechanism 25, armrest locking notch 251, armrest locking block 252, armrest locking elastic element 253, armrest unlocking drive section 254. Backrest locking mechanism 3, backrest locking notch 31, backrest locking block 32, backrest unlocking component 33, backrest sliding block 331. Safety locking mechanism 34; safety blocking block 341, safety clearance notch 3411, safety reset elastic component 342. Linkage control mechanism 4, seat locking hole 41, linkage control component 42, linkage control elastic component 43, linkage control drive unit 44. Frame unlocking mechanism 5, frame unlocking component 51, frame unlocking elastic component 52. External locking and unlocking mechanism 6, external locking notch 61, external locking block 62, external locking elastic component 63, external unlocking component 64, external unlocking drive unit 641. Connecting linkage structure 7, connecting linkage latching part 71, connecting latching block 72, connecting locking elastic component 73. [Specific implementation method]

[0056] The following is in conjunction with the appendix Figure 1-19 The embodiments of the present invention will be described in detail.

[0057] like Figure 1-14 As shown, the present invention discloses a child seat 2 with unlockable linkage to the frame, comprising: a seat portion 21; a backrest 22, the lower end of which is rotatably connected to the rear side of the seat portion 21, and a backrest locking mechanism 3 for locking the backrest 22 relative to the seat portion 21 between the backrest 22 and the seat portion 21; an external connecting seat 23, which is rotatably connected to the outside of the seat portion 21, and the seat portion 21 is connected to the frame joint assembly 14 via the external connecting seat 23; and a linkage control mechanism 4, which locks the seat portion 21 relative to the external connecting seat 23. The linkage control mechanism 4 is configured such that when the backrest 22 is folded forward relative to the seat portion 21 to a preset angle, the linkage control mechanism 4 can unlock the frame joint assembly 14, and when the frame joint assembly 14 is unlocked, the linkage control mechanism 4 still locks the seat portion 21 relative to the external connecting seat 23. When folding the child seat of this invention, only the backrest locking mechanism needs to be manually released to allow the backrest to fold forward relative to the seat until it is flush with the seat. Therefore, this invention requires only one manual operation to release the backrest lock and fold the child seat, reducing the risk of injury, especially the risk of the user's hand being pinched. It is also characterized by its ease of operation, convenient use, and reliable safety. Furthermore, the folding motion of the child seat is intuitive, allowing even users unfamiliar with the seat to fold it quickly.

[0058] like Figure 7 , 9 As shown in Figure 10, the seat part 21 includes a seat connecting seat 211 for rotatably connecting to the external connecting seat 23, and the backrest 22 includes a backrest connecting seat 221 for rotatably connecting to the seat connecting seat 211; the linkage control mechanism 4 is located between the seat connecting seat 211, the backrest connecting seat 221 and the external connecting seat 23.

[0059] As shown in 7, 9-12, the linkage control mechanism 4 includes a seat locking hole 41 provided on the seat connecting seat 211 and a linkage control member 42 movably provided on the external connecting seat 23. The upper end of the linkage control member 42 is configured to pass through the seat locking hole 41 and cooperate with the backrest connecting seat 221 when the seat part 21 is in the unfolded use state. The lower end of the linkage control member 42 is configured to unlock the linkage frame joint assembly 14. A linkage control elastic member 43 is provided between the linkage control member 42 and the external connecting seat 23 to keep the upper end of the linkage control member 42 inserted into the seat locking hole 41. The linkage control mechanism 4 also includes a linkage control drive part 44 provided on the backrest connecting seat 221, which is used to abut against the upper end of the linkage control member 42 when the backrest 22 is folded forward relative to the seat part 21 to a preset angle, thereby driving the lower end of the linkage control member 42 to unlock the linkage frame joint assembly 14. When the backrest is folded forward relative to the seat to a preset angle, the linkage control drive unit 44 abuts against the upper end of the linkage control component 42 to drive the linkage control component 42 to slide downward relative to the external connecting seat 23, thereby unlocking the linkage control component 42's lower end linkage frame joint assembly 14.

[0060] like Figure 9 , 10 As shown, to improve safety, an armrest 24 is also included, which is rotatably connected to the seat 21 and located in front of the backrest 22. An armrest locking mechanism 25 is provided between the armrest 24 and the seat 21 to lock the armrest 24 relative to the seat 21.

[0061] To make folding more convenient, the armrest locking mechanism 25 is configured to be unlocked by the backrest 22 when the backrest 22 is folded forward relative to the seat 21 to a preset angle.

[0062] like Figure 9 , 10 As shown, to better lock and easily unlock the armrests, the seat 21 includes a seat connecting seat 211 rotatably connected to an external connecting seat 23; the backrest 22 includes a backrest connecting seat 221 rotatably connected to the seat connecting seat 211; the armrest 24 includes an armrest connecting seat 241 rotatably connected to the seat connecting seat 211; and the armrest locking mechanism 25 includes an armrest mounted on the armrest connecting seat 241. The armrest locking notch 251 and the armrest locking block 252 are slidably disposed on the seat connecting seat 211 and can be engaged in the armrest locking notch 251. An armrest locking elastic member 253 is provided between the armrest locking block 252 and the seat connecting seat 211 to keep the armrest locking block 252 elastically engaged in the armrest locking notch 251. The armrest locking block 252 is configured to be unlocked by the backrest 22 when the backrest 22 is folded forward relative to the seat part 21 to a preset angle.

[0063] like Figure 9-12 As shown, the backrest connecting seat 221 is provided with an armrest unlocking drive part 254 for driving the armrest locking block 252 out of the armrest locking notch 251 when the backrest 22 is folded forward relative to the seat part 21 to a preset angle. Preferably, the armrest unlocking drive part 254 is an armrest unlocking drive slope, which can better link the armrest locking block 252, such as... Figure 10-12 As shown. When it is necessary to unlock the armrest, when the backrest 22 is rotated forward relative to the seat 21 to a preset angle, the armrest unlocking drive unit 254 drives the armrest locking block 252 to disengage from the armrest locking notch 251 to release the armrest 24 from the seat 21.

[0064] like Figure 10 , 12 As shown, to better lock the backrest, the seat portion 21 includes a seat connecting seat 211 for rotatable connection to an external connecting seat 23, and the backrest 22 includes a backrest connecting seat 221 for rotatable connection to the seat connecting seat 211. The backrest locking mechanism 3 includes a plurality of backrest locking notches 31 provided on the seat connecting seat 211 and a backrest locking block 32 slidably provided on the backrest connecting seat 221 and capable of engaging with the backrest locking notches 31. A backrest locking elastic member is provided between the backrest locking block 32 and the backrest connecting seat 221 to keep the backrest locking block 32 elastically engaged with the backrest locking notch 31. In this embodiment, by engaging the backrest locking block 32 with the corresponding backrest locking notch 31, the tilt angle of the backrest 22 relative to the seat portion 21 is adjusted to provide a comfortable seating area suitable for passengers of different ages and weights.

[0065] like Figure 8 As shown, for ease of operation, the backrest 22 is provided with a backrest unlocking component 33 for disengaging the backrest locking block 32 from the backrest locking notch 31. The backrest unlocking component 33 is connected to the backrest locking block 32 via a connecting strap. Figure 8 , 13 As shown in Figure 14, the backrest unlocking component 33 is a backrest unlocking wrench rotatably connected to the backrest back 22. The backrest back 22 is provided with a backrest sliding block 331 that can be pushed by the backrest unlocking wrench and slide relative to the backrest back 22. The backrest sliding block 331 is connected to the backrest locking block 32 through a connecting strap.

[0066] like Figure 8 , 10As shown in Figures 13 and 14, the backrest connecting seat 211 or armrest connecting seat 241 is provided with an armrest blocking block 2411 for blocking and cooperating with the backrest locking block 32, thereby preventing the backrest 22 from folding forward relative to the seat portion 21. The backrest 22 is provided with a safety locking mechanism 34 for limiting the movement stroke of the backrest locking block 32. The safety locking mechanism 34 includes a safety blocking block 341 slidably disposed on the backrest 22 and a safety clearance notch 3411 disposed on the safety blocking block 341. A safety reset elastic element 342 is provided between the safety blocking block 341 and the backrest 22.

[0067] When it is necessary to adjust the tilt angle of the backrest 22 relative to the seat 21, it is only necessary to operate the backrest unlocking component 33 to drive the backrest sliding block 331 to move the backrest locking block 32 to slide, so that the backrest locking block 32 can disengage from the backrest locking notch 31. At this time, because the safety blocking block 341 restricts the movement of the backrest sliding block 331, the backrest locking block 32 cannot disengage from the armrest blocking block 2411.

[0068] When it is necessary to adjust the backrest 22 to flip forward relative to the seat 21 and activate the linkage control mechanism 4 and the armrest locking mechanism 25, first operate the safety blocking block 341 to slide relative to the backrest 22 to remove the restriction of the backrest sliding block 331 on the movement stroke of the safety blocking block 341. Then, operate the backrest unlocking member 33 to drive the backrest sliding block 331 to drive the backrest locking block 32 to slide, so that the backrest sliding block 331 can enter the safety clearance notch 3411, and the backrest locking block 32 can be released from the obstruction of the backrest locking notch 31 and the armrest blocking block 2411.

[0069] like Figure 1-19As shown, the present invention provides a children's stroller, comprising: a frame body 1, the frame body 1 including a front leg 11, a rear leg 12, and a push rod 13, the front leg 11, the rear leg 12, and the push rod 13 being rotatably connected via a frame joint assembly 14; a child seat 2, the child seat 2 including a seat portion 21, a backrest 22, and an external connecting seat 23, the lower end of the backrest 22 being rotatably connected to the rear side of the seat portion 21, and a backrest locking mechanism 3 for locking the backrest 22 relative to the seat portion 21 being provided between the backrest 22 and the seat portion 21; the external connecting seat 23 being rotatably connected to the outside of the seat portion 21, the seat portion 21 being connected via an external connecting seat 23. The seat 23 is connected to the frame joint assembly 14; the linkage control mechanism 4 allows the seat portion 21 to be locked relative to the external connecting seat 23. The linkage control mechanism 4 is configured such that when the backrest 22 is folded forward relative to the seat portion 21 to a preset angle, the linkage control mechanism 4 can unlock the frame joint assembly 14, and when the frame joint assembly 14 is unlocked, the linkage control mechanism 4 still keeps the seat portion 21 locked relative to the external connecting seat 23; the linkage control mechanism 4 is also configured such that when the frame body 1 is rotated and folded to a preset angle, the frame joint assembly 14 can drive the linkage control mechanism 4 to release the locking state of the seat portion 21 relative to the external connecting seat 23. When folding the stroller, the present invention only requires manually releasing the locking mechanism of the backrest, folding the backrest forward relative to the seat to a preset angle so that the linkage control mechanism can unlock the frame joint assembly. Then, the frame body rotates and folds to the preset angle so that the frame joint assembly drives the linkage control mechanism to release the locking of the seat relative to the external connecting seat. At this time, the backrest and the seat rotate and fold towards the front footrest, thus completing the overall folding of the stroller. Therefore, the present invention can fold the stroller simply and quickly.

[0070] In the stroller of the present invention, the backrest locking mechanism 3 can be manually unlocked, and then the backrest 22 is flipped forward relative to the seat 21 to release the frame joint assembly 14. Then, the push rod 13 of the frame body 1 is flipped downward to release the seat 21, thereby completing the unlocking of the stroller as a whole. The unlocking operation is convenient.

[0071] Preferably, in order to better unlock the linkage, the linkage control mechanism 4 is also configured such that when the push rod 13 is flipped down to a preset angle, the frame joint assembly 14 can drive the linkage control mechanism 4 to release the locking state of the seat part 21 relative to the external connecting seat 23.

[0072] like Figure 17To facilitate folding, a frame rotation elastic element 146, which is a torsion spring, is provided between the push rod 13 and the rear foot rod 12 to allow the push rod 13 to rotate relative to the rear foot rod 12. When the linkage control mechanism 4 unlocks the frame joint assembly 14, the frame rotation elastic element 146 provides the push rod 13 with a rotational restoring force to rotate in the direction of the rear foot rod 11, thereby facilitating the frame joint assembly 14 to drive the linkage control mechanism 4 to release the locking state of the seat 21 relative to the external connecting seat 23.

[0073] like Figure 17 As shown, in order to better lock the frame body and better unlock the frame body, the frame joint assembly 14 includes a rear joint seat 142 located at the upper end of the rear footrest 12, a front joint seat 141 located at the upper end of the front footrest 11 and rotatably connected to the rear joint seat 142, and a handlebar joint seat 143 located at the lower end of the push rod 13 and rotatably connected to the rear joint seat 142; the frame joint assembly 14 also includes a frame locking mechanism 145 for locking the front joint seat 141 and / or the handlebar joint seat 143 relative to the rear joint seat 142, and the frame locking mechanism 145 is configured to be unlocked by the linkage control mechanism 4.

[0074] like Figure 16 , 17 As shown, a linkage 144 is provided between the front joint seat 141 and the handle joint seat 143 for simultaneously rotating in opposite directions or in opposite directions. Compared with the gear-driven mechanism used in the prior art, the present invention uses a linkage to connect, which can reduce assembly difficulties and manufacturing costs.

[0075] like Figure 16 , 17 As shown, the front joint seat 141 and the rear joint seat 142 are hinged at point A, and the handle joint seat 143 and the rear joint seat 142 are hinged at point B; the front end of the linkage 144 is eccentrically hinged to the front joint seat 141 at point C, and the rear end of the linkage 144 is eccentrically hinged to the handle joint seat 143 at point D, and the line connecting points C and D forms an angle with the line connecting points A and B, with points C and D correspondingly located on both sides of point B.

[0076] like Figure 17 In order to make folding more convenient, a frame rotation elastic element 146 is provided between the handle joint seat 143 and the rear joint seat 142, which allows the handle joint seat 143 to rotate relative to the rear joint seat 142.

[0077] like Figure 17-19As shown, in order to better lock and unlock the frame body, the frame locking mechanism 145 includes a frame locking notch 1451 provided on the handlebar joint seat 143 and / or the front joint seat 141, and a frame locking block 1452 slidably provided on the rear joint seat 142 and capable of engaging with the frame locking notch 1451 to lock the front joint seat 141 and the handlebar joint seat 143 relative to the rear joint seat 142 in an unfolded state. A frame locking elastic member 1453 is provided between the frame locking block 1452 and the rear joint seat 142 to keep the frame locking block 1452 elastically engaged with the frame locking notch 1451. The frame locking block 1452 is configured to be unlocked by the linkage control mechanism 4.

[0078] like Figure 7 , 17 As shown, for ease of use, the frame body 1 is also independently provided with a frame unlocking mechanism 5 for unlocking the frame joint assembly 14. The frame unlocking mechanism 5 includes a frame unlocking component 51 slidably disposed within the rear joint seat 142 and fixedly connected to the frame locking block 1452. The operating end of the frame unlocking component 51 is exposed on the outside of the rear joint seat 142. A frame unlocking elastic component 52 is provided between the frame unlocking component 51 and the rear joint seat 142. The frame unlocking component 51 is configured to be unlocked by the linkage control mechanism 4. When the child seat is removed from the frame body and the frame body needs to be folded, the user operates the frame unlocking elastic component 52 to slide downward relative to the rear joint seat 142, which will cause the frame locking block 1452 to disengage from the frame locking notch 1451 and release the locking state of the frame joint assembly 14. When the child seat is connected to the frame body and the frame body needs to be folded, manually release the backrest locking mechanism from locking the backrest. Fold the backrest forward relative to the seat to a preset angle so that the linkage control mechanism can activate the frame unlocking component 51. This causes the frame locking block 1452 to slide downward relative to the rear joint seat 142 and exit the frame locking notch 1451 to release the locking state of the frame joint assembly 14.

[0079] like Figure 17-19 As shown, the locking end of the frame locking block 1452 is provided with a frame locking inclined surface 14521 for abutting against the peripheral wall of the handlebar joint seat 143. When the push rod 13 drives the handlebar joint seat 143 to rotate, the peripheral wall of the handlebar joint seat 143 presses against the frame locking inclined surface 14521 so that the frame locking block 1452 slides downward relative to the rear joint seat 142. Then, the frame locking block 1452 is linked to the linkage control component 42 and slides downward relative to the external connecting seat 23, so that the upper end of the linkage control component 42 exits the seat locking hole 41, thereby releasing the seat part 21 from the locking state.

[0080] like Figure 7 , 17As shown, for easy disassembly and reliable linkage, a connecting linkage structure 7 is provided between the frame unlocking component 51 and the linkage control component 42 to allow for detachable connection between the two. The connecting linkage structure 7 includes a connecting linkage engaging portion 71 disposed on the linkage control component 42 and a connecting engaging block 72 slidably disposed on the frame unlocking component 51 and capable of engaging with the connecting linkage engaging portion 71. A connecting locking elastic element 73 is provided between the connecting engaging block 72 and the frame unlocking component 51 to maintain the connecting engaging block 72 elastically engaged with the connecting linkage engaging portion 71. The connecting engaging block 72 is configured to be unlocked by an external unlocking component 64. Figure 7 , 9 As shown in Figures 10 and 17, the connecting linkage latching part 71 is a connecting latching strip, and the connecting latching block 72 is provided with a connecting slot for engaging with the connecting latching strip.

[0081] like Figure 7 , 10 As shown, the external connecting seat 23 is detachably connected to the frame joint assembly 14. An external locking and unlocking mechanism 6 is provided between the external connecting seat 23 and the frame joint assembly 14 for locking the external connecting seat 23 relative to the frame joint assembly 14 and for releasing the locked state of the external connecting seat 23 relative to the frame joint assembly 14. The external locking and unlocking mechanism 6 includes an external locking notch 61 provided on the rear joint seat 142 and an external locking block 62 slidably provided on the external connecting seat 23 and capable of engaging with the external locking notch 61. An external locking elastic member 63 is provided between the external locking block 62 and the external connecting seat 23 to keep the external locking block 62 elastically engaged with the external locking notch 61. The external locking and unlocking mechanism 6 also includes an external unlocking member 64 slidably provided on the external connecting seat 23. The external unlocking member 64 is provided with an external unlocking drive part 641 for driving the external locking block 62 out of the external locking notch 61 when the external unlocking member 64 slides relative to the external connecting seat 23. When it is necessary to remove the child seat from the frame, the user operates the external unlocking component 64 to slide vertically relative to the external connecting seat 23, causing the external unlocking drive unit 641 to drive the external locking block 62 to slide laterally relative to the external connecting seat 23 and disengage from the external locking notch 61. Figure 7 As shown, the external unlocking ramp at the lower end of the external unlocking member 64 is configured to allow the connecting latch block 72 to slide laterally, thereby separating the connecting latch block 72 from the connecting linkage latch part 71.

[0082] How a stroller folds down:

[0083] First, operate the safety blocking block 341 to slide relative to the backrest 22 to remove the restriction of the movement stroke of the backrest sliding block 331 by the safety blocking block 341. Then, operate the backrest unlocking component 33 to drive the backrest sliding block 331 to move the backrest locking block 32, so that the backrest sliding block 331 can enter the safety clearance notch 3411, and the backrest locking block 32 can exit the obstruction of the backrest locking notch 31 and the armrest blocking block 2411.

[0084] Then, operate the backrest 22 to rotate forward relative to the seat 21 to a preset angle, such as... Figure 4 As shown, the linkage control drive unit 44 drives the linkage control component 42 to slide downward relative to the external connecting seat 23, causing the lower end of the linkage control component 42 to drive the frame unlocking component 51 and the frame locking block 1452 to slide downward relative to the rear joint seat 142, causing the frame locking block 1452 to disengage from the frame locking notch 1451, as shown. Figure 17 As shown, this releases the locked state of the frame joint assembly 14;

[0085] Then, push rod 13 flips downward relative to rear footrest 11 to a preset angle, causing the peripheral wall of handlebar joint seat 143 to press against frame locking ramp 14521, driving frame locking block 1452 to cause frame unlocking component 51 to continue sliding downward relative to rear joint seat 142. The frame unlocking component 51 then acts on linkage control component 42 to continue sliding downward relative to external connecting seat 23, causing the upper end of linkage control component 42 to exit seat locking hole 41, thereby releasing the locking state of seat part 21 relative to external connecting seat 23. At this moment, backrest 22, together with seat part 21, can rotate and move closer to front footrest 11 until seat part 21 and backrest 22 are close to front footrest 11. Figure 5 , 6 As shown;

[0086] During the downward flipping of the push rod 13 relative to the rear foot rod 11, the push rod 13, through the linkage 144, links the front foot rod 11 to flip backward relative to the rear foot rod 11 until the frame body is folded, thus achieving the overall folding of the stroller. Figure 5 , 6 As shown, it features easy folding.

Claims

1. A child seat (2) that can be unlocked by linking to a vehicle frame, characterized in that... include: Seating area (21); The backrest (22) is rotatably connected to the rear side of the seat (21) at its lower end. A backrest locking mechanism (3) is provided between the backrest (22) and the seat (21) for locking the backrest (22) relative to the seat (21). A backrest unlocking member (33) is provided on the backrest (22) for unlocking the backrest locking mechanism (3). An external connecting seat (23) is rotatably connected to the outside of the seat part (21), and the seat part (21) is connected to the frame joint assembly (14) via the external connecting seat (23); The linkage control mechanism (4) allows the seat portion (21) to be locked relative to the external connecting seat (23). The linkage control mechanism (4) is configured such that when the backrest (22) is folded forward relative to the seat portion (21) to a preset angle, the linkage control mechanism (4) can unlock the frame joint assembly (14). When the frame joint assembly (14) is unlocked, the linkage control mechanism (4) still locks the seat portion (21) relative to the external connecting seat (23). The linkage control mechanism (4) includes a seat locking hole (41) provided on the seat connecting seat (211) and a linkage control member (42) movably provided on the external connecting seat (23). The upper end of the linkage control member (42) is configured to pass through the seat locking hole (41) when the seat part (21) is in the unfolded use state, and the lower end of the linkage control member (42) is configured to unlock the linkage frame joint assembly (14). The linkage control mechanism (4) further includes a linkage control drive unit (44) provided on the backrest connecting seat (221) and used to engage with the upper end of the linkage control component (42) when the backrest (22) is folded forward relative to the seat part (21) to a preset angle, thereby driving the lower end of the linkage control component (42) to unlock the linkage frame joint assembly (14).

2. The child seat (2) with unlockable linkage to the vehicle frame as described in claim 1, characterized in that... The seat (21) includes a seat connector (211) for rotatably connecting to an external connector (23), and the backrest (22) includes a backrest connector (221) for rotatably connecting to the seat connector (211); the linkage control mechanism (4) is located between the seat connector (211), the backrest connector (221) and the external connector (23).

3. The child seat (2) with unlockable linkage to the vehicle frame as described in claim 2, characterized in that... The linkage control component (42) and the external connecting seat (23) are provided with a linkage control elastic component (43) that can keep the upper end of the linkage control component (42) inserted into the seat locking hole (41).

4. A child seat (2) with unlockable linkage to the vehicle frame according to any one of claims 1-3, characterized in that... It also includes an armrest (24) rotatably connected to the seat (21) and located in front of the backrest (22), wherein an armrest locking mechanism (25) is provided between the armrest (24) and the seat (21) for locking the armrest (24) relative to the seat (21).

5. The child seat (2) with unlockable linkage to the vehicle frame according to claim 4, characterized in that... The armrest locking mechanism (25) is configured to be unlocked by the backrest (22) when the backrest (22) is folded forward relative to the seat (21) to a preset angle.

6. The child seat (2) with unlockable linkage to the vehicle frame according to claim 5, characterized in that... The seat portion (21) includes a seat connector (211) for rotatably connecting to an external connector (23), the backrest (22) includes a backrest connector (221) for rotatably connecting to the seat connector (211), and the armrest portion (24) includes an armrest connector (241) for rotatably connecting to the seat connector (211). The armrest locking mechanism (25) includes an armrest locking notch (251) provided on the armrest connecting seat (241) and an armrest locking block (252) slidably provided on the seat connecting seat (211) and capable of being engaged in the armrest locking notch (251). An armrest locking elastic member (253) is provided between the armrest locking block (252) and the seat connecting seat (211) for keeping the armrest locking block (252) elastically engaged in the armrest locking notch (251). The armrest locking block (252) is configured to be unlocked by the backrest (22) when the backrest (22) is folded forward relative to the seat (21) to a preset angle.

7. The child seat (2) with unlockable linkage to the vehicle frame as described in claim 6, characterized in that... The backrest connecting seat (221) is provided with an armrest unlocking drive part (254) for driving the armrest locking block (252) to exit the armrest locking notch (251) when the backrest (22) is folded forward relative to the seat part (21) to a preset angle.

8. The child seat (2) with unlockable linkage to the vehicle frame according to claim 1, characterized in that... The seat (21) includes a seat connector (211) for rotatably connecting to an external connector (23), and the backrest (22) includes a backrest connector (221) for rotatably connecting to the seat connector (211). The backrest locking mechanism (3) includes a backrest locking notch (31) provided on the seat connecting seat (211) and a backrest locking block (32) slidably provided on the backrest connecting seat (221) and capable of being engaged in the backrest locking notch (31). A backrest locking elastic member is provided between the backrest locking block (32) and the backrest connecting seat (221) to keep the backrest locking block (32) elastically engaged in the backrest locking notch (31).

9. A child seat (2) with unlockable linkage to the vehicle frame as described in claim 8, characterized in that... The backrest (22) is provided with a backrest unlocking component (33) for engaging the backrest locking block (32) to disengage from the backrest locking notch (31). The backrest unlocking component (33) is connected to the backrest locking block (32) via a connecting strap.

10. A children's stroller, characterized in that... include: The frame body (1) includes a front leg (11), a rear leg (12) and a push rod (13), which are rotatably connected by a frame joint assembly (14). A child seat (2) includes a seat (21), a backrest (22), and an external connecting seat (23). The lower end of the backrest (22) is rotatably connected to the rear side of the seat (21). A backrest locking mechanism (3) is provided between the backrest (22) and the seat (21) for locking the backrest (22) relative to the seat (21). The external connecting seat (23) is rotatably connected to the outside of the seat (21). The seat (21) is connected to the frame joint assembly (14) through the external connecting seat (23). The linkage control mechanism (4) allows the seat portion (21) to be locked relative to the external connecting seat (23). The linkage control mechanism (4) is configured such that when the backrest (22) is folded forward relative to the seat portion (21) to a preset angle, the linkage control mechanism (4) can unlock the frame joint assembly (14). When the frame joint assembly (14) is unlocked, the linkage control mechanism (4) still locks the seat portion (21) relative to the external connecting seat (23). The linkage control mechanism (4) includes a seat locking hole (41) provided on the seat connecting seat (211) and a linkage control member (42) movably provided on the external connecting seat (23). The upper end of the linkage control member (42) is configured to pass through the seat locking hole (41) when the seat part (21) is in the unfolded use state, and the lower end of the linkage control member (42) is configured to unlock the linkage frame joint assembly (14). The linkage control mechanism (4) further includes a linkage control drive unit (44) provided on the backrest connecting seat (221) and used to engage with the upper end of the linkage control component (42) when the backrest (22) is folded forward relative to the seat part (21) to a preset angle, thereby driving the lower end of the linkage control component (42) to unlock the linkage frame joint assembly (14).

11. A children's stroller according to claim 10, characterized in that... The linkage control mechanism (4) is configured such that when the frame body (1) rotates and folds to a preset angle, the frame joint assembly (14) drives the linkage control mechanism (4) to release the locking state of the seat part (21) relative to the external connecting seat (23).

12. A children's stroller according to claim 11, characterized in that... The linkage control mechanism (4) is also configured to cause the frame joint assembly (14) to drive the linkage control mechanism (4) to release the locking state of the seat part (21) relative to the external connecting seat (23) when the push rod (13) is flipped down to a preset angle.

13. A children's stroller according to claim 12, characterized in that... A frame rotation elastic element (146) is provided between the push rod (13) and the rear foot rod (12) to enable the push rod (13) to rotate relative to the rear foot rod (12).

14. A children's stroller according to any one of claims 10-13, characterized in that... The frame joint assembly (14) includes a rear joint seat (142) located at the upper end of the rear foot bar (12), a front joint seat (141) located at the upper end of the front foot bar (11) and rotatably connected to the rear joint seat (142), and a handlebar joint seat (143) located at the lower end of the push rod (13) and rotatably connected to the rear joint seat (142). A linkage (144) is provided between the front joint seat (141) and the handlebar joint seat (143) for simultaneously rotating in opposite directions or in opposite directions. The frame joint assembly (14) further includes a frame locking mechanism (145) for locking the front joint seat (141) and / or the handlebar joint seat (143) relative to the rear joint seat (142), the frame locking mechanism (145) being configured to be unlocked by a linkage control mechanism (4).

15. A children's stroller according to claim 14, characterized in that... A frame rotation elastic element (146) is provided between the handlebar joint seat (143) and the rear joint seat (142) to enable the handlebar joint seat (143) to rotate relative to the rear joint seat (142).

16. A children's stroller according to claim 14, characterized in that... The frame locking mechanism (145) includes a frame locking notch (1451) provided on the handlebar joint seat (143) and / or the front joint seat (141) and a frame locking block (1452) slidably provided on the rear joint seat (142) and capable of engaging in the frame locking notch (1451) to lock the front joint seat (141) and the handlebar joint seat (143) relative to the rear joint seat (142) in an unfolded state. A frame locking elastic element (1453) is provided between the frame locking block (1452) and the rear joint seat (142) to keep the frame locking block (1452) elastically engaged in the frame locking notch (1451). The frame locking block (1452) is configured to be unlocked by the linkage control mechanism (4).

17. A children's stroller according to claim 16, characterized in that... The frame body (1) is also independently provided with a frame unlocking mechanism (5) for unlocking the frame joint assembly (14); the frame unlocking mechanism (5) includes a frame unlocking component (51) which is slidably disposed in the rear joint seat (142) and relatively fixedly connected to the frame locking block (1452). The operating end of the frame unlocking component (51) is exposed on the outside of the rear joint seat (142). A frame unlocking elastic component (52) is provided between the frame unlocking component (51) and the rear joint seat (142). The frame unlocking component (51) is configured to be unlocked by the linkage control mechanism (4).

18. A children's stroller according to claim 10, characterized in that... The frame body (1) is also independently provided with a frame unlocking mechanism (5) for unlocking the frame joint assembly (14).

19. A children's stroller according to claim 10, characterized in that... The external connector (23) is detachably connected to the frame joint assembly (14), and an external locking and unlocking mechanism (6) is provided between the external connector (23) and the frame joint assembly (14) for locking the external connector (23) relative to the frame joint assembly (14) and for releasing the locked state of the external connector (23) relative to the frame joint assembly (14).

20. A children's stroller according to claim 19, characterized in that... The frame joint assembly (14) includes a rear joint seat (142) located at the upper end of the rear foot bar (12), a front joint seat (141) located at the upper end of the front foot bar (11) and rotatably connected to the rear joint seat (142), and a handle joint seat (143) located at the lower end of the push rod (13) and rotatably connected to the rear joint seat (142). The external locking and unlocking mechanism (6) includes an external locking notch (61) provided on the rear joint seat (142) and an external locking block (62) slidably provided on the external connecting seat (23) and capable of engaging with the external locking notch (61). An external locking elastic member (63) is provided between the external locking block (62) and the external connecting seat (23) to enable the external locking block (62) to remain elastically engaged with the external locking notch (61). The external locking and unlocking mechanism (6) further includes an external unlocking member (64) slidably disposed on the external connecting seat (23). The external unlocking member (64) is provided with an external unlocking drive part (641) for driving the external locking block (62) to exit the external locking notch (61) when the external unlocking member (64) slides relative to the external connecting seat (23).

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