Linkage unlocking mechanism, frame comprising linkage unlocking mechanism and stroller comprising linkage unlocking mechanism

Abstract

The invention provides a linkage unlocking mechanism and a stroller frame and a stroller comprising the linkage unlocking mechanism, the linkage unlocking mechanism comprises a folding joint, the folding joint is provided with a diagonal plane and a locking piece, when the locking piece is located at a first position, at least part of the locking piece is clamped on the rotating track of a front foot rod and / or a push rod, and when the locking piece moves to a second position, the locking piece is at least partially clamped on the rotating track of the front foot rod and / or the push rod. The locking piece is separated from the rotating tracks of the front foot rod and the rear foot rod; the seat connector is rotatably connected to the folding joint, the seat connector comprises a traction piece, the locking piece is connected with the traction piece, and when the seat connector is driven by the seat to rotate, one end of the traction piece is tangent to the diagonal plane and moves along the extending protruding part of the diagonal plane; one end of the linkage part is rotatably connected to the seat connector, the other end of the linkage part is rotatably connected to the push rod, and a stroke space for the seat connector to rotate so as to enable the locking piece to move to the second position is reserved at the joint of the linkage part and the push rod.

Description

Technical Field

[0001] The invention relates to a walking tool for children, and in particular to a linked unlocking mechanism and a frame and a child stroller comprising the same. Background Art

[0002] In daily life, strollers can save adults' physical strength, and children can also sit in them comfortably, which is deeply loved by consumers. In existing stroller products, the push rod, front foot rod, and rear foot rod can be folded synchronously by flipping the linkage part (see application number 2019203045430), but before folding, some products need to separate the seat from the frame and fold them separately, and another part of the products can be folded as a whole without separating the seat and the frame, but the seat and the frame need to be unlocked separately to achieve this. On this basis, there is a small number of strollers that further improve the above situation, and the linkage mechanism can unlock the frame part while unlocking the seat. However, in the actual folding process, the user needs to unlock the stroller in the first step, and the second step is to complete the folding action of the seat part and the frame part respectively. In other words, although the unlocking can be achieved in linkage, the seat and the frame still need to be folded separately to fold the entire vehicle. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the problem in the prior art that the seat and the frame cannot synchronously complete the entire folding action, and to provide a linked unlocking mechanism and a frame and a child stroller comprising the same.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] A linkage unlocking mechanism for unlocking a push rod, a front foot rod and a rear foot rod of a child stroller, wherein the push rod, the front foot rod and the rear foot rod are turned over in a linkage manner, and the linkage unlocking mechanism comprises: a folding joint, wherein the folding joint is provided with a chamfered surface and a locking member, wherein the locking member can move between a first position and a second position, and when the locking member is in the first position, it is at least partially clamped on the rotation trajectory of the front foot rod and / or the push rod, and when the locking member moves to the second position, the locking member disengages from the rotation trajectory of the front foot rod and the rear foot rod; a seat connector, wherein the seat connector can be rotatably connected to the folding joint, and the seat connector comprises a traction member, wherein the locking member is connected to the traction member, and the traction member is movable The seat connector is arranged on the seat connector and rotates synchronously with the seat connector, the traction member can move in a parallel direction from the first position to the second position, the beveled surface extends a protrusion in the rotation direction of the seat connector, and when the seat connector rotates driven by the seat, one end of the traction member is tangent to the beveled surface and moves along the extended protrusion of the beveled surface in a parallel direction from the first position to the second position; a linkage part, one end of the linkage part is connected to the seat connector, and the other end of the linkage part is connected to the push rod, and the connection between the linkage part and the push rod and / or the connection between the linkage part and the seat connector reserves a travel space for the seat connector to rotate so that the locking member moves to the second position.

[0006] In this solution, the above-mentioned structural form is adopted, and the traction member on the seat connector can rotate with the seat connector and move in a parallel direction from the first position to the second position. When the traction member rotates, since the chamfered surface extends and protrudes in the direction of rotation and one end of the traction member is tangent to the chamfered surface, the traction member is moved by the force of the chamfered surface and drives the locking member to move from the first position to the second position, so that the locking member is separated from the rotation track of the front foot rod and the push rod to achieve unlocking. Since the front foot rod and the push rod are linked and flipped, the locking member actually only needs to clamp the rotation track of one of the front foot rod and the push rod. In addition, a linkage part is provided between the seat connector and the push rod, and the connection between the linkage part and the push rod or the connection between the linkage part and the seat connector reserves a travel space for the seat connector to rotate so that the locking member moves to the second position. Of course, the connection between the linkage part and the push rod and the connection between the linkage part and the seat connector can also reserve a travel space for the seat connector to rotate so that the locking member moves to the second position. That is, the seat connector does not have a linkage relationship with the push rod when it rotates at the beginning. Only when the seat connector rotates to a certain angle, the locking piece is separated from the rotation track of the front foot rod and the rear foot rod to be unlocked, and the push rod can rotate, the seat connector will drive the push rod to flip. With the above structure, when the user folds the seat on the seat connector to flip it in a predetermined direction, the seat connector first unlocks the front foot rod, the push rod and the rear foot rod synchronously, and then drives the push rod to rotate under the action of the linkage part. Because the push rod, the front foot rod and the rear foot rod are linked to flip, the push rod drives the entire frame to be folded when it bends. The entire unlocking and folding process is smooth and simple to operate.

[0007] Preferably, the seat connector is provided with an unlocking member and a slot, and the folding joint is provided with a locking portion, and the locking portion can move between a third position and a fourth position. When the locking portion is located at the third position, it cooperates with the slot, and the unlocking member can apply a force to the locking portion to move it toward the fourth position to disengage from the slot.

[0008] In the present solution, the above-mentioned structural form is adopted. When the locking portion is located at the third position, it cooperates with the locking slot on the seat connector. At this time, the seat connector cannot be rotated under the action of the locking portion to achieve locking. Because an unlocking member is also provided on the seat connector, when the unlocking member is subjected to external force, the force can be transmitted to the locking portion to move it toward the fourth position to disengage from the locking slot to achieve unlocking.

[0009] Preferably, a first elastic member is disposed on the folding joint, and one end of the first elastic member abuts against the clamping portion and applies a force toward the third position thereto.

[0010] In this solution, the above-mentioned structural form is adopted. When the force of the unlocking member is released, the locking portion can move to the third position to cooperate with the locking slot under the action of the first elastic member. At this time, the seat connector is locked and cannot rotate, ensuring safe use.

[0011] Preferably, the locking member includes a first locking pin and a second locking pin, and when the locking member is located at the first position, the first locking pin and the second locking pin are respectively clamped on the rotation tracks of the front foot rod and the push rod.

[0012] In the present solution, the above-mentioned structural form is adopted. When the locking member is located at the first position, the first locking pin and the second locking pin simultaneously clamp the rotation of the front foot rod and the push rod, and the locking effect is more stable.

[0013] Preferably, the seat connector includes a sleeve, one end of the traction member is movably sleeved in the sleeve, a limiting portion and a second elastic member are provided inside the sleeve, a first end of the second elastic member abuts against the limiting portion, and a second end of the second elastic member abuts against the traction member.

[0014] In this solution, the above-mentioned structural form is adopted, and one end of the traction member is movably sleeved in the sleeve to facilitate its movement in the parallel direction from the first position to the second position, and the structure is simple and reliable. At the same time, one end of the second elastic member abuts against the limit portion, and when the force of the chamfered surface is released, that is, after the seat connector rotates in the opposite direction, the traction member drives the locking member to move to the first position under the action of the second elastic member, thereby locking the front foot rod and the push rod.

[0015] Preferably, the linkage part is in the shape of a sheet, one end of the linkage part is rotatably connected to the seat connector, the other end of the linkage part is rotatably connected to the push rod, the linkage part is provided with a first guide groove at the connection with the push rod, and the seat connector is provided with a second guide groove at the connection with the linkage part.

[0016] In this solution, the above-mentioned structural form is adopted, the linking part is in the form of a sheet, which can save space and make the structure more compact. The first guide groove and the second guide groove can reserve a certain travel space at the connection with the push rod and the connection with the seat connector when the seat connector rotates. When the seat connector rotates to a certain angle, the push rod will be driven to flip. The structure is simple, stable and reliable.

[0017] A vehicle frame comprises the above-mentioned linked unlocking mechanism.

[0018] In this solution, when the traction member rotates, since the chamfer extends and protrudes in the direction of rotation and one end of the traction member is tangent to the chamfer, the traction member is moved by the force of the chamfer and drives the locking member to move from the first position to the second position, so that the locking member is separated from the rotation track of the front foot rod and the rear foot rod to achieve unlocking. In addition, a linkage portion is provided between the seat connector and the push rod, and a travel space is reserved at the connection between the linkage portion and the push rod for the seat connector to rotate so that the locking member moves to the second position, that is, the seat connector does not have a linkage relationship with the push rod when it rotates at the beginning. Only when the seat connector rotates to a certain angle, so that the locking member is separated from the rotation track of the front foot rod and the rear foot rod to achieve unlocking, and the push rod can rotate, the seat connector will drive the push rod to flip. With the above structural form, when the user folds the seat on the seat connector to flip it in a predetermined direction, the seat connector first unlocks the frame synchronously, and then drives the push rod to bend under the action of the linkage portion, thereby driving the entire frame to be folded. The entire unlocking and folding process is smooth and simple and convenient to operate.

[0019] A baby stroller comprises the above-mentioned frame.

[0020] In the present solution, the above-mentioned structural form is adopted. When the user folds the seat of the child stroller to flip it in a predetermined direction, the seat connector synchronously unlocks the frame first, and then drives the push rod to bend under the action of the linkage part, thereby driving the entire stroller to be folded. The entire unlocking and folding process is continuous and smooth, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of a linked unlocking mechanism according to an embodiment of the present invention.

[0022] Figure 2 It is another structural schematic diagram of the linked unlocking mechanism according to an embodiment of the present invention.

[0023] Figure 3 The figure is a schematic structural diagram of a traction member according to an embodiment of the present invention.

[0024] Figure 4 The figure is a schematic structural diagram of a traction member and a locking member according to an embodiment of the present invention.

[0025] Figure 5 FIG. 4 is another structural schematic diagram of the linked unlocking mechanism according to an embodiment of the present invention.

[0026] Figure 6 The figure is a schematic structural diagram of a seat connector and a linkage part according to an embodiment of the present invention.

[0027] Figure 7 FIG. 4 is another structural schematic diagram of a seat connector and a linkage part according to an embodiment of the present invention.

[0028] Figure 8 The figure is a schematic structural diagram of a sleeve and a pulling member according to an embodiment of the present invention.

[0029] Fig. 9 2 is a cross-sectional view of a linkage unlocking mechanism according to an embodiment of the present invention.

[0030] Fig.10 The figure is a schematic structural diagram of a seat according to an embodiment of the present invention.

[0031] Fig.11 The figure is a schematic structural diagram of a two-way folding and unlocking mechanism according to an embodiment of the present invention.

[0032] Fig.12 It is another structural schematic diagram of the bidirectional folding and unlocking mechanism according to an embodiment of the present invention.

[0033] Fig.13 The figure is a schematic structural diagram of a child stroller according to an embodiment of the present invention.

[0034] Fig.14 FIG. 2 is another schematic structural diagram of a child stroller according to an embodiment of the present invention.

[0035] Description of Reference Numerals

[0036] Folding joint 5

[0037] Bevel 51

[0038] Locking member 52

[0039] First lock pin 521

[0040] Second locking pin 522

[0041] The third locking pin 523

[0042] Clamping part 53

[0043] The first elastic member 54

[0044] Seat connector 6

[0045] Traction parts 61

[0046] Unlocking piece 62

[0047] Card slot 63

[0048] Casing 64

[0049] Limiting part 641

[0050] The second elastic member 642

[0051] Second guide groove 65

[0052] Linkage 7

[0053] First guide groove 71

[0054] Putter 81

[0055] Front foot bar 82

[0056] Rear foot bar 83

[0057] Linkage 84

[0058] Sit board 4

[0059] Backrest 3

[0060] First rotating member 1

[0061] Pushing part 11

[0062] First inclined surface 12

[0063] Second rotating member 2

[0064] Second slope 21

[0065] First position 91

[0066] Second position 92

[0067] Fifth position 31

[0068] Sixth position 32

[0069] Seventh position 41

[0070] Eighth position 42 DETAILED DESCRIPTION

[0071] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0072] like Figure 1-Figure 9As shown, the present invention provides a linkage unlocking mechanism for unlocking a push rod 81, a front foot rod 82 and a rear foot rod 83 of a child stroller. The push rod 81, the front foot rod 82 and the rear foot rod 83 are linked to flip, and the linkage unlocking mechanism includes: a folding joint 5, the folding joint 5 is provided with a chamfered surface 51 and a locking member 52, the locking member 52 can move between a first position and a second position, when the locking member 52 is in the first position, its part is clamped on the rotation track of the front foot rod 82 and the push rod 81, when the locking member 52 moves to the second position, the locking member 52 is separated from the rotation track of the front foot rod 82 and the rear foot rod 83; a seat connector 6, the seat connector 6 can be rotatably connected to the folding joint 5, the seat connector 6 includes a traction member 61, the locking member 52 is fixed to the traction member 61 Fixed connection, the traction member 61 is movably arranged on the seat connector 6 and rotates synchronously with the seat connector 6, the traction member 61 can move in a parallel direction from the first position to the second position, the chamfered surface 51 extends and protrudes in the rotation direction of the seat connector 6, when the seat connector 6 rotates driven by the seat, one end of the traction member 61 is tangent to the chamfered surface 51 and moves along the extended protrusion of the chamfered surface 51 in a parallel direction from the first position to the second position; the linkage part 7, one end of the linkage part 7 is connected to the seat connector 6, and the other end of the linkage part 7 is connected to the push rod 81, and the connection between the linkage part 7 and the push rod 81 and the connection between the linkage part 7 and the seat connector 6 reserve a travel space for the seat connector 6 to rotate to move the locking member 52 to the second position.

[0073] In this embodiment, the above structure is adopted, and the traction member 61 on the seat connector 6 can rotate with the seat connector 6 and move in a parallel direction from the first position to the second position. When the traction member 61 rotates, since the chamfered surface 51 extends and protrudes in the direction of rotation and one end of the traction member 61 is tangent to the chamfered surface 51, the traction member 61 is moved by the force of the chamfered surface 51 and drives the locking member 52 from the first position (such as Figure 5The front foot bar 82 and the push rod 81 are rotated in conjunction with each other, so that the locking member 52 is actually only required to clamp the rotation track of one of the front foot bar and the push rod. In addition, a linkage part 7 is provided between the seat connector 6 and the push rod 81, and the connection between the linkage part 7 and the push rod 81 and the connection between the linkage part 7 and the seat connector 6 are both reserved with a travel space for the seat connector 6 to rotate so that the locking member 52 moves to the second position, that is, the seat connector 6 does not have a linkage relationship with the push rod 81 when it rotates at the beginning. Only when the seat connector 6 rotates to a certain angle, so that the locking member 52 is separated from the rotation track of the front foot bar 82 and the rear foot bar 83 to be unlocked, and the push rod 81 can rotate, the seat connector 6 will drive the push rod 81 to flip. Of course, in other embodiments, the above effect can also be achieved by reserving a travel space for the seat connector 6 to rotate so that the locking member 52 can move to the second position at only one of the two connections, which can be the connection between the linkage part 7 and the push rod 81 or the connection between the linkage part 7 and the seat connector 6. With the above structure, when the user folds the seat on the seat connector 6 to flip it in a predetermined direction, the seat connector 6 first unlocks the front foot rod 82, the push rod 81 and the rear foot rod 83 synchronously, and then drives the push rod 81 to rotate under the action of the linkage part 7. Because the push rod 81, the front foot rod 82 and the rear foot rod 83 are flipped in a linked manner, the push rod 81 drives the entire frame to be folded when it is bent. The entire unlocking and folding process is smooth and simple to operate.

[0074] like Fig. 9 As shown, as a preferred embodiment, the seat connector 6 is provided with an unlocking member 62 and a slot 63, and a locking portion 53 is provided on the folding joint 5. The unlocking member 62 and the locking portion 53 are both cylinders, and the locking portion 53 can move between a third position and a fourth position. When the locking portion 53 is located at the third position, it cooperates with the slot 63, and the unlocking member 62 can apply a force to the locking portion 53 to move it toward the fourth position to disengage from the slot 63.

[0075] In this embodiment, the above-mentioned structural form is adopted. When the locking portion 53 is located at the third position, it cooperates with the locking slot 63 on the seat connector 6. At this time, the seat connector 6 cannot be rotated under the action of the locking portion 53 to achieve locking. Because an unlocking member 62 is also provided on the seat connector 6, when the unlocking member 62 is subjected to external force, the force can be transmitted to the locking portion 53 to move it toward the fourth position to disengage from the locking slot 63 to achieve unlocking.

[0076] As a preferred embodiment, a first elastic member 54 is provided on the folding joint 5 , and one end of the first elastic member 54 abuts against the clamping portion 53 and applies a force toward the third position thereto.

[0077] In this embodiment, the above-mentioned structural form is adopted. When the force of the unlocking member 62 is released, the locking portion 53 can move to the third position to cooperate with the locking slot 63 under the action of the first elastic member 54. At this time, the seat connector 6 is locked and cannot rotate, ensuring safe use.

[0078] like Figure 5 As shown, as a preferred embodiment, a linkage 84 is arranged between the front foot rod 82 and the push rod 81, and the locking member 52 includes a first locking pin 521, a second locking pin 522 and a third locking pin 523. When the locking member 52 is in the first position, the first locking pin 521 and the second locking pin 522 are respectively clamped on the rotation trajectory of the front foot rod 82 and the push rod 81, and the third locking pin 523 is clamped on the linkage 84.

[0079] In this embodiment, the above structure is adopted, when the locking member 52 is in the first position, the first locking pin 521 and the second locking pin 522 simultaneously block the rotation of the front foot rod 82 and the push rod 81, and the third locking pin 523 blocks the linkage member 84, so that the locking effect is more stable. Of course, in other embodiments, only one locking pin may be provided to block the rotation of the front foot rod 82 or the push rod 81.

[0080] like Figure 8 As shown, as a preferred embodiment, the seat connector 6 includes a sleeve 64, one end of the traction member 61 is movably sleeved in the sleeve 64, a limiting portion 641 and a second elastic member 642 are arranged inside the sleeve 64, the limiting portion 641 is a pin, the second elastic member 642 is a spring, the first end of the second elastic member 642 abuts against the limiting portion 641, and the second end of the second elastic member 642 abuts against the traction member 61.

[0081] In this embodiment, a cavity is provided at one end of the traction member 61 that is movably sleeved in the sleeve 64, and the second elastic member 642 is arranged in the cavity and is arranged in the sleeve 64 through the cavity. Of course, in other embodiments, the second elastic member 642 can be directly arranged in the sleeve 64. One end of the traction member 61 is movably sleeved in the sleeve 64, which can facilitate its movement in the parallel direction from the first position to the second position, and the structure is simple and reliable. At the same time, one end of the second elastic member 642 abuts against the limiting portion 641. When the force of the chamfered surface 51 is released, that is, the seat connector 6 rotates in the opposite direction, the traction member 61 drives the locking member 52 to move to the first position under the action of the second elastic member 642, so as to lock the front foot rod 82 and the push rod 81. Of course, in other embodiments, the pin can be replaced by other structures, as long as the other end of the second elastic member 642 can be kept from displacement.

[0082] As a preferred embodiment, the linkage part 7 is in the shape of a sheet, one end of the linkage part 7 can be rotatably connected to the seat connector 6, the other end of the linkage part 7 can be rotatably connected to the push rod 81, the linkage part 7 is provided with a first guide groove 71 at the connection with the push rod 81, and the seat connector 6 is provided with a second guide groove 65 at the connection with the linkage part 7.

[0083] In this embodiment, the above-mentioned structural form is adopted, and the linkage part 7 is in a sheet shape, which can save the occupied space and make the structure more compact. The first guide groove 71 and the second guide groove 65 can reserve a certain travel space at the connection with the push rod 81 and the connection with the seat connector 6 when the seat connector 6 rotates. When the seat connector 6 rotates to a certain angle, the push rod 81 will be driven to flip. This structure is simple, stable and reliable. Of course, in other embodiments, one end of the linkage part 7 can be fixedly connected to the push rod 81. At this time, only the second guide groove 65 needs to reserve enough travel space for the seat connector 6 to rotate so that the locking member moves to the second position. Similarly, the linkage part 7 can also be fixedly connected to the seat connector 6. At this time, the first guide groove 71 needs to reserve enough travel space for the seat connector 6 to rotate so that the locking member moves to the second position. Of course, in other embodiments, the first guide groove 71 can also be set on the push rod 81, and the second guide groove 65 can also be set on the linkage part 7.

[0084] The present invention also provides a vehicle frame, which comprises the above-mentioned linked unlocking mechanism.

[0085] In this embodiment, when the traction member 61 rotates, since the chamfered surface 51 extends and protrudes in the direction of rotation and one end of the traction member 61 is tangent to the chamfered surface 51, the traction member 61 is moved by the force of the chamfered surface 51 and drives the locking member 52 to move from the first position to the second position, so that the locking member 52 is separated from the rotation track of the front foot rod 82 and the rear foot rod 83 to achieve unlocking. In addition, a linkage part 7 is provided between the seat connector 6 and the push rod 81, and a travel space is reserved at the connection between the linkage part 7 and the push rod 81 for the seat connector 6 to rotate so that the locking member 52 moves to the second position, that is, the seat connector 6 does not have a linkage relationship with the push rod 81 when it rotates at the beginning. Only when the seat connector 6 rotates to a certain angle, so that the locking member 52 is separated from the rotation track of the front foot rod 82 and the rear foot rod 83 to achieve unlocking, and the push rod 81 can rotate, the seat connector 6 will drive the push rod 81 to flip. With the above-mentioned structural form, when the user folds the seat on the seat connector 6 to flip it in a predetermined direction, the seat connector 6 will first unlock the frame synchronously, and then drive the push rod 81 to bend under the action of the linkage part 7, thereby driving the entire frame to be folded. The entire unlocking and folding process is smooth and continuous, and the operation is simple and convenient.

[0086] like Figure 10-13As shown, the present invention also provides a child stroller, which comprises a seat and the above-mentioned frame.

[0087] The seat includes a seat plate 4, a backrest 3 and a two-way folding and unlocking mechanism. In this embodiment, the backrest 3 is fixedly connected to the first rotating member 1, and the seat plate 4 is fixedly connected to the second rotating member 2. When the backrest 3 is unfolded, the first rotating member 1 is located at the fifth position 31, and when the backrest 3 is folded, the first rotating member 1 is located at the sixth position 32. When the seat plate 4 is unfolded, the second rotating member 2 is located at the seventh position 41, and when the backrest 3 is folded, the second rotating member 2 is located at the eighth position 42. The first rotating member 1 of the seat can rotate around its rotation axis, especially between the fifth position 31 and the sixth position 32, and the second rotating member 2 can rotate around its rotation axis, especially between the seventh position 41 and the eighth position 42. When the second rotating member 2 does not rotate and the first rotating member 1 rotates to the sixth position 32, since the first inclined surface 12 is set to gradually rise from the fifth position 31 to the sixth position 32, the first inclined surface 12 is tangent to the unlocking member 62 during the movement and applies a force to the unlocking member 62 as the first rotating member 1 rotates, so that the unlocking member 62 moves in the unlocking direction under the push of the first inclined surface 12 to achieve unlocking. When the first rotating member 1 is at the fifth position 31, that is, the first rotating member 1 does not rotate, the second rotating member 2 rotates from the seventh position 41 to the eighth position 42, since the second inclined surface 21 is set to gradually rise from the seventh position 41 to the eighth position 42, the second inclined surface 21 is tangent to the pushing portion 11 during the movement and applies a force to the pushing portion 11 as the second rotating member 2 rotates, so that the pushing portion 11 moves in the direction of the unlocking member 62 under the push of the second inclined surface 21, and then the unlocking member 62 moves in the unlocking direction under the push of the pushing portion 11 to achieve unlocking.

[0088] In this embodiment, the above structure is adopted. When the installation direction of the seat is as follows: Fig.13 When the user folds the seat plate 4 to bend it toward the push rod, the unlocking member 62 is unlocked; when the seat is installed in the position as Fig.14 When the user folds the backrest 3 to bend it in the direction of the push rod, the unlocking member 62 is unlocked. That is, whether the backrest 3 or the seat plate 4 is rotated, the unlocking force can be applied to the unlocking member 62. The user can flexibly choose to bend the backrest 3 or the seat plate 4 according to the direction in which the seat is placed on the frame, and the operation is more convenient and simple. When the user folds the seat of the child stroller to turn it in a predetermined direction, the seat connector 6 first unlocks the frame synchronously, and then drives the push rod 81 to bend under the action of the linkage part 7, thereby driving the entire stroller to be folded. The entire unlocking and folding process is smooth and simple to operate.

[0089] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A linkage unlocking mechanism, used for unlocking a push rod, a front leg rod and a rear leg rod of a child stroller, wherein the push rod, the front leg rod and the rear leg rod are linked to flip, characterized in that: The interlocking unlocking mechanism comprises: A folding joint, wherein the folding joint is provided with a chamfered surface and a locking member, wherein the locking member can move between a first position and a second position, wherein when the locking member is located at the first position, the locking member is at least partially clamped on the rotation track of the front foot rod and / or the push rod, and when the locking member moves to the second position, the locking member is disengaged from the rotation track of the front foot rod and the rear foot rod; A seat connector, the seat connector is rotatably connected to the folding joint, the seat connector includes a traction member, the locking member is connected to the traction member, the traction member is movably arranged on the seat connector and rotates synchronously with the seat connector, the traction member can move in a parallel direction from a first position to a second position, the chamfered surface extends a protrusion in the direction of rotation of the seat connector, and when the seat connector rotates driven by the seat, one end of the traction member is tangent to the chamfered surface and moves along the extended protrusion of the chamfered surface in a parallel direction from the first position to the second position; A linkage part, one end of which is connected to the seat connector, and the other end of which is connected to the push rod, and a travel space is reserved at the connection between the linkage part and the push rod and / or the connection between the linkage part and the seat connector for the seat connector to rotate so that the locking member moves to the second position.

2. The interlocking unlocking mechanism according to claim 1, characterized in that: The seat connector is provided with an unlocking member and a slot, and the folding joint is provided with a locking portion, which can move between a third position and a fourth position. When the locking portion is located at the third position, it cooperates with the slot, and the unlocking member can apply a force to the locking portion to move it toward the fourth position to disengage from the slot.

3. The interlocking unlocking mechanism according to claim 2, characterized in that: The folding joint is provided with a first elastic member, one end of which abuts against the clamping portion and applies a force toward the third position.

4. The interlocking unlocking mechanism according to claim 1, characterized in that: The locking member comprises a first locking pin and a second locking pin. When the locking member is located at a first position, the first locking pin and the second locking pin are respectively clamped on the rotation tracks of the front foot rod and the push rod.

5. The interlocking unlocking mechanism according to claim 1, characterized in that: The seat connector includes a sleeve, one end of the traction member is movably sleeved in the sleeve, a limiting portion and a second elastic member are arranged inside the sleeve, a first end of the second elastic member abuts against the limiting portion, and a second end of the second elastic member abuts against the traction member.

6. The interlocking unlocking mechanism according to claim 1, characterized in that: The linkage part is in the shape of a sheet, one end of the linkage part is rotatably connected to the seat connector, the other end of the linkage part is rotatably connected to the push rod, a first guide groove is provided at a connection between the linkage part and the push rod, and a second guide groove is provided at a connection between the seat connector and the linkage part.

7. A vehicle frame, characterized in that: The frame includes the linked unlocking mechanism as described in any one of claims 1-6.

8. A child stroller, characterized in that: The stroller comprises the frame according to claim 7.

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