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

Abstract

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 utility model relates to a children's walking tool, in particular to a linked unlocking mechanism and a frame and a children's stroller comprising the same. Background Art

[0002] In daily life, strollers can save adults' physical energy, and children can also ride in them comfortably, which is deeply loved by consumers. In existing stroller products, the push rod, front leg rod, and rear leg rod can be folded synchronously by flipping the linkage part (see application number 2019203045430). However, before folding, some products require the seat to be separated from the frame and folded separately. Although other products can be folded as a whole without separating the seat and frame, they need to unlock the seat and frame separately before they can be folded. On this basis, there are a small number of strollers that further improve the above situation, and use a linkage mechanism to 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 separately. In other words, although the unlocking can be achieved in a linked manner, folding the entire vehicle still requires folding the seat and frame separately. Utility Model Content

[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 complete the entire folding action synchronously, and to provide a linked unlocking mechanism and a frame and a child stroller including the same.

[0004] The utility model 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 rotated in a linkage manner, and the linkage unlocking mechanism comprises: a folding joint, wherein the folding joint is provided with a beveled 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 stuck in 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 is rotatably connected to the folding joint, the seat connector comprises a traction member, 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 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 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 to move the locking member to the second position.

[0006] In this embodiment, the above-described structure allows the pull member on the seat connector to rotate with the seat connector while also being able to move in a direction parallel to the first position toward the second position. As the pull member rotates, the chamfered surface extends and protrudes in the direction of rotation, and one end of the pull member is tangential to the chamfered surface. The pull member is acted upon by the chamfered surface, causing it to move and drive the locking member from the first position toward the second position, disengaging the locking member from the rotational path of the front leg and push rod to unlock the seat. Because the front leg and push rod rotate in tandem, the locking member only needs to engage the rotational path of either the front leg or push rod. Furthermore, a linkage is provided between the seat connector and the push rod, and either the linkage and the push rod connection or the linkage and the seat connector reserves travel space for the seat connector to rotate and move the locking member to the second position. Alternatively, both the linkage and the push rod connection and the linkage and the seat connector may reserve travel space for the seat connector to rotate and move the locking member to the second position. That is, the seat connector is not linked to the push rod when it initially rotates. Only when the seat connector rotates to a certain angle, disengaging the locking member from the rotational trajectory of the front and rear leg rods to unlock the seat connector, and the push rod is able to rotate, will the seat connector drive the push rod to flip. With this structure, when a user folds the seat on the seat connector and flips it in a predetermined direction, the seat connector first simultaneously unlocks the front leg rod, push rod, and rear leg rod, and then, driven by the linkage, drives the push rod to rotate. Because the push rod, front leg rod, and rear leg rod rotate in tandem, the push rod bends, driving the entire frame to fold. The entire unlocking and folding process is smooth and seamless, making operation simple and convenient.

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

[0008] In this solution, the above-mentioned structural form is adopted. When the locking portion is in 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 provided 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 under the action of the first elastic member to cooperate with the locking slot. 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. 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 this solution, the above-mentioned structural form is adopted. When the locking member is in the first position, the first locking pin and the second locking pin simultaneously block 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 embodiment, the aforementioned structure allows one end of the pulling member to be movably sleeved within the sleeve, facilitating its movement in a parallel direction from the first position toward the second position. This results in a simple and reliable structure. Simultaneously, one end of the second elastic member abuts the stop. When the force applied by the chamfered surface is released, i.e., when the seat connector rotates in the opposite direction, the pulling member, under the action of the second elastic member, drives the locking member to the first position, thereby locking the front foot rod and 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 plate-shaped linkage portion saves space and creates a more compact structure. The first and second guide grooves allow for a certain amount of travel between the seat connector and the push rod and the seat connector when the seat connector rotates. This allows the push rod to flip only after the seat connector rotates to a certain angle. This structure is simple, stable, and reliable.

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

[0018] In this embodiment, when the pull member rotates, the chamfered surface extends and protrudes in the direction of rotation, and one end of the pull member is tangent to the chamfered surface. The chamfered surface exerts a force on the pull member, causing it to move and drive the locking member from a first position to a second position, disengaging the locking member from the rotational trajectory of the front and rear legs, thereby unlocking the seat. Furthermore, a linkage is provided between the seat connector and the push rod, and the connection between the linkage and the push rod allows travel space for the seat connector to rotate and move the locking member to the second position. This means that the seat connector is not linked to the push rod during initial rotation. Only when the seat connector rotates to a certain angle, disengaging the locking member from the rotational trajectory of the front and rear legs, thereby unlocking the seat, and the push rod is able to rotate, does the seat connector drive the push rod to rotate. With this structure, when a user folds the seat on the seat connector to tilt it in a predetermined direction, the seat connector first unlocks the vehicle frame, then, under the action of the linkage, drives the push rod to bend, thereby folding the entire vehicle frame. The entire unlocking and folding process is smooth and easy, making operation simple and convenient.

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

[0020] In this solution, the above-mentioned structural form is adopted. When the user folds the seat of the child stroller and flips 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 part, thereby driving the entire stroller to be folded. The entire unlocking and folding process is smooth and coherent, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0024] Figure 4 This is a schematic structural diagram of a traction member and a locking member according to an embodiment of the present utility model.

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

[0026] Figure 6 Schematic diagram of the structure of a seat connector and a linkage portion according to an embodiment of the present invention.

[0027] Figure 7This is another structural diagram of a seat connector and a linkage portion according to an embodiment of the present invention.

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

[0029] Figure 9 This is a cross-sectional view of a linked unlocking mechanism according to an embodiment of the present invention.

[0030] Figure 10 This is a schematic structural diagram of a seat according to an embodiment of the present invention.

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

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

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

[0034] Figure 14 This is another structural schematic 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 locking pin 521

[0040] Second locking pin 522

[0041] Third locking pin 523

[0042] Clamping portion 53

[0043] First elastic member 54

[0044] Seat connector 6

[0045] Traction piece 61

[0046] Unlocking piece 62

[0047] Card slot 63

[0048] Casing 64

[0049] Limiting portion 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 rod 83

[0057] Linkage 84

[0058] Sit board 4

[0059] Backrest 3

[0060] First rotating member 1

[0061] Pushing portion 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 Figures 1-9As shown, the utility model provides a linkage unlocking mechanism for unlocking the push rod 81, the front leg rod 82 and the rear leg rod 83 of the stroller, and the push rod 81, the front leg rod 82 and the rear leg rod 83 are linked to flip, and the linkage unlocking mechanism includes: a folding joint 5, the folding joint 5 is provided with a beveled 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 stuck on the rotation track of the front leg 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 leg rod 82 and the rear leg 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 and 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 beveled surface 51 extends and protrudes in the direction of rotation 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 beveled surface 51 and moves along the extended protrusion of the beveled surface 51 from the first position to the second position in a parallel direction; 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-mentioned structure is adopted, and the pulling 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 pulling member 61 rotates, since the beveled surface 51 extends and protrudes in the direction of rotation and one end of the pulling member 61 is tangent to the beveled surface 51, the pulling member 61 is moved by the force of the beveled surface 51 and drives the locking member 52 from the first position (such as Figure 5The front leg rod 82 and the push rod 81 rotate in a coordinated manner, so that the locking member 52 is unlocked. Since the front leg rod 82 and the push rod 81 rotate in unison, the locking member only needs to engage the rotational trajectory of either the front leg rod or the push rod. Furthermore, a linkage 7 is provided between the seat connector 6 and the push rod 81. Both the linkage 7 and the push rod 81, and the linkage 7 and the seat connector 6, allow for travel space for the seat connector 6 to rotate and move the locking member 52 to the second position. Specifically, when the seat connector 6 initially rotates, it is not linked to the push rod 81. Only when the seat connector 6 rotates to a certain angle, disengaging the locking member 52 from the rotational trajectory of the front leg rod 82 and the rear leg rod 83 and unlocking the seat connector, and the push rod 81 is able to rotate, does the seat connector 6 drive the push rod 81 to rotate. Of course, in other embodiments, the above-mentioned effect can also be achieved by reserving a travel space at the connection between the linkage 7 and the push rod 81 or at the connection between the linkage 7 and the seat connector 6 so that only one of the two connections has a travel space reserved for the seat connector 6 to rotate and move the locking member 52 to the second position. With the above-mentioned structure, when the user folds the seat on the seat connector 6 and turns it in a predetermined direction, the seat connector 6 first simultaneously unlocks the front leg rod 82, the push rod 81, and the rear leg rod 83. Then, under the action of the linkage 7, the push rod 81 is driven to rotate. Because the push rod 81, the front leg rod 82, and the rear leg rod 83 are turned in conjunction, the push rod 81 bends and the entire frame is folded. The entire unlocking and folding process is smooth and easy to operate.

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

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

[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.

[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 under the action of the first elastic member 54 to cooperate with the locking groove 63. 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 provided 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-described structure is used. When the locking member 52 is in the first position, the first locking pin 521 and the second locking pin 522 simultaneously prevent the rotation of the front leg rod 82 and the push rod 81, while the third locking pin 523 prevents the linkage 84 from rotating. This provides a more stable locking effect. Of course, in other embodiments, only one locking pin may be provided to prevent the rotation of either the front leg 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, and a limiting portion 641 and a second elastic member 642 are provided inside the sleeve 64. The limiting portion 641 is a pin, and 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, one end of the pulling member 61, which is movably mounted within the sleeve 64, is provided with a cavity. The second elastic member 642 is disposed within this cavity and is positioned within the sleeve 64 through this cavity. Of course, in other embodiments, the second elastic member 642 can be directly mounted within the sleeve 64. Having one end of the pulling member 61 movably mounted within the sleeve 64 facilitates its movement in a parallel direction from the first position toward the second position, resulting in a simple and reliable structure. Simultaneously, one end of the second elastic member 642 abuts against the stop 641. When the force applied by the chamfered surface 51 is released, i.e., when the seat connector 6 rotates in the opposite direction, the pulling member 61, under the action of the second elastic member 642, drives the locking member 52 to the first position, thereby locking the front leg rod 82 and the push rod 81. Of course, in other embodiments, the pin can be replaced with another structure that can prevent the other end of the second elastic member 642 from moving.

[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, and 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-described structure of the linkage portion 7, which is sheet-shaped, saves space and provides a more compact structure. The first guide groove 71 and the second guide groove 65 reserve a certain amount of travel space at the connection with the push rod 81 and the connection with the seat connector 6 when the seat connector 6 rotates. Only when the seat connector 6 rotates to a certain angle will the push rod 81 be rotated. This structure is simple, stable, and reliable. Of course, in other embodiments, one end of the linkage portion 7 can be fixedly connected to the push rod 81. In this case, only the second guide groove 65 needs to reserve sufficient travel space for the seat connector 6 to rotate and move the locking member to the second position. Similarly, the linkage portion 7 can be fixedly connected to the seat connector 6. In this case, the first guide groove 71 needs to reserve sufficient travel space for the seat connector 6 to rotate and move the locking member to the second position. Of course, in other embodiments, the first guide groove 71 can also be provided on the push rod 81, and the second guide groove 65 can also be provided on the linkage portion 7.

[0084] The utility model also provides a vehicle frame, which includes the above-mentioned linked unlocking mechanism.

[0085] In this embodiment, when the pull member 61 rotates, the chamfered surface 51 extends and protrudes in the direction of rotation, and one end of the pull member 61 is tangential to the chamfered surface 51. The pull member 61 is subjected to the force of the chamfered surface 51, causing it to move and drive the locking member 52 from the first position to the second position, thereby disengaging the locking member 52 from the rotational trajectory of the front and rear legs 82, 83, and thereby unlocking the seat. Furthermore, a linkage 7 is provided between the seat connector 6 and the push rod 81. The connection between the linkage 7 and the push rod 81 allows for travel space for the seat connector 6 to rotate and move the locking member 52 to the second position. In other words, when the seat connector 6 initially rotates, it is not linked to the push rod 81. Only when the seat connector 6 rotates to a certain angle, disengaging the locking member 52 from the rotational trajectory of the front and rear legs 82, 83, and thereby unlocking the seat, and the push rod 81 is able to rotate, does the seat connector 6 drive the push rod 81 to flip. With the above-mentioned structural form, when the user folds the seat on the seat connector 6 and flips it in a predetermined direction, the seat connector 6 first simultaneously unlocks the frame, and then drives the push rod 81 to bend under the action of the linkage part 7, thereby driving the entire frame to fold. The entire unlocking and folding process is smooth and coherent, and the operation is simple and convenient.

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

[0087] The seat includes a seat panel 4, a backrest 3, and a bidirectional folding and unlocking mechanism. In this embodiment, the backrest 3 is fixedly connected to a first rotating member 1, and the seat panel 4 is fixedly connected to a second rotating member 2. When the backrest 3 is deployed, the first rotating member 1 is in a fifth position 31; when the backrest 3 is folded, the first rotating member 1 is in a sixth position 32. When the seat panel 4 is deployed, the second rotating member 2 is in a seventh position 41; when the backrest 3 is folded, the second rotating member 2 is in an eighth position 42. The first rotating member 1 of the seat can rotate about its axis, specifically between the fifth position 31 and the sixth position 32. The second rotating member 2 can rotate about its axis, specifically between the seventh position 41 and the eighth position 42. When the second rotating member 2 is not rotating and the first rotating member 1 rotates to the sixth position 32, since the first inclined surface 12 is arranged to gradually rise from the fifth position 31 to the sixth position 32, the first inclined surface 12 is tangential to the unlocking member 62 during movement and applies a force to the unlocking member 62 as the first rotating member 1 rotates, causing the unlocking member 62 to move in the unlocking direction under the push of the first inclined surface 12 to achieve unlocking. When the first rotating member 1 is in the fifth position 31, that is, the first rotating member 1 is not rotating, and the second rotating member 2 rotates from the seventh position 41 to the eighth position 42, since the second inclined surface 21 is arranged to gradually rise from the seventh position 41 to the eighth position 42, the second inclined surface 21 is tangential to the pushing portion 11 during movement and applies a force to the pushing portion 11 as the second rotating member 2 rotates, causing the pushing portion 11 to move toward 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: Figure 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 shown Figure 14 When the user folds the backrest 3 toward the push rod, unlocking the unlocking member 62. In other words, whether rotating the backrest 3 or the seat 4, the unlocking force on the unlocking member 62 can be applied. Depending on the orientation of the seat on the stroller frame, the user can flexibly choose to bend either the backrest 3 or the seat 4, making operation more convenient and simple. When the user folds the stroller seat and turns it in the desired direction, the seat connector 6 first unlocks the stroller frame. Then, under the action of the linkage 7, the push rod 81 is bent, which in turn causes the entire stroller to fold. The entire unlocking and folding process is smooth and seamless, making operation simple and convenient.

[0089] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection 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, and such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. A linkage unlocking mechanism 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 rotate in a linkage manner, characterized in that: The linked unlocking mechanism includes: a folding joint, the folding joint being provided with a beveled surface and a locking member, the locking member being movable between a first position and a second position, wherein when the locking member is in the first position, it is at least partially engaged with the rotation trajectory of the front leg rod and / or the push rod, and when the locking member moves to the second position, the locking member is disengaged from the rotation trajectory of the front leg rod and the rear leg rod; a seat connector, the seat connector being rotatably connected to the folding joint, the seat connector including a pulling member, the locking member being connected to the pulling member, the pulling member being movably disposed on the seat connector and rotating synchronously with the seat connector, the pulling member being movable in a direction parallel to a first position toward a second position, the beveled surface extending 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 pulling member is tangent to the beveled surface and moves along the extended protrusion of the beveled surface in a direction parallel to the first position toward the second position; A linkage portion, one end of which is connected to the seat connector, and the other end of which is connected to the push rod, wherein a travel space is reserved at the connection between the linkage portion and the push rod and / or the connection between the linkage portion and the seat connector for allowing the seat connector to rotate so that the locking member moves to the second position.

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

3. The interlocking unlocking mechanism according to claim 2, wherein: 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, wherein: The locking member includes 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, wherein: 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.

6. The interlocking unlocking mechanism according to claim 1, wherein: The linkage part is in the shape of a sheet, one end of the linkage part is rotatably connected to the seat connector, and 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.

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

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

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