Stroller frame

Abstract

A first supporting rod is provided with a sliding piece capable of sliding relative to the first supporting rod, the sliding piece is connected with an upper supporting rod in a rotatable mode, the upper end of the upper supporting rod is connected with a supporting frame, the supporting frame is provided with a ceiling support, and the supporting frame is connected with the upper supporting rod in a rotatable mode. A linkage piece hinged to the supporting frame and the first supporting rod is arranged between the supporting frame and the upper end of the first supporting rod, the second supporting rod is rotationally connected to the sliding piece or the upper supporting rod, a transmission piece rotationally connected with the second supporting rod and the first supporting rod is further arranged between the second supporting rod and the first supporting rod, and a seat supporting piece is arranged between the upper supporting rod and the first supporting rod. The front side of the seat supporting piece is rotatably connected to the upper supporting rod, the rear side of the seat supporting piece is rotatably connected to the first supporting rod, a push rod assembly is rotatably connected to the supporting frame, and the stay position of the push rod assembly comprises a forward position and a reverse position. The foldable baby carriage is simple in structure, flexible to fold, small in size after being folded and convenient for adults to take care of children.

Description

[Technical field]

[0001] The utility model relates to a child stroller frame. [Background technology]

[0002] Strollers are common products for infants and young children during their growth. Current stroller frames are generally foldable for easy carrying or storage. Moreover, the frame structures of strollers on the market vary, and the folding actions and folding principles are different. In the prior art, many stroller frames have complex structures, are inconvenient to fold, and have large volumes after folding. In addition, current strollers can generally only be pushed in one direction. When pushing a stroller, an adult and a child in the seat generally face forward in the same direction, making it difficult for an adult to observe the child in the seat, making it inconvenient for an adult to look after the child.

[0003] Therefore, the present invention is just produced based on above-mentioned shortcomings. [Contents of the utility model]

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a child stroller frame which has a simple structure, is flexible to fold and fold, has a small volume after folding, and is convenient for adults to look after children.

[0005] The utility model is realized by the following technical solutions:

[0006] A stroller frame, which can be moved from an unfolded position to a folded position after a locking device is unlocked, comprises a first support rod 11 and a second support rod 12, both of which are connected to wheels 13, the first support rod 11 is provided with a sliding member 2 that can slide relative to it, the sliding member 2 is rotatably connected to an upper support rod 3 around a first axis A, the upper end of the upper support rod 3 is connected to a support frame 4, the support frame 4 is provided with a ceiling bracket 42 that can be rotatably unfolded or folded relative to it, the support frame 4 is rotatably connected to the upper support rod 3 around a second axis B, a linkage member 5 is hinged to the upper end of the first support rod 11 and deviates from the second axis B, the second support rod 12 is hinged to the third axis B, and the second support rod 12 is hinged to the third axis B. Axis C is rotatably connected to the sliding member 2 or the upper support rod 3, and a transmission member 6 rotatably connected to the second support rod 12 and the first support rod 11 is also provided between the second support rod 12 and the first support rod 11. A seat support member 9 is provided between the upper support rod 3 and the first support rod 11. The front side of the seat support member 9 is rotatably connected to the upper support rod 3 around the eleventh axis J, and the rear side of the seat support member 9 is rotatably connected to the first support rod 11 around the twelfth axis K. A push rod assembly 7 that can rotate relative to the support frame 4 is rotatably connected to the support frame 4, and the position where the push rod assembly 7 stays includes a forward position that can push the child stroller frame forward and a reverse position that can push the child stroller frame reversely after rotating relative to the support frame 4.

[0007] The upper support rod 3 is provided with a connecting seat 33, and the seat support member 9 includes a seat rod 91 rotatably connected to the connecting seat 33 around an eleventh axis J, and the rear end of the seat rod 91 is rotatably connected to the first support rod 11 around a twelfth axis K.

[0008] The transmission member 6 comprises a transmission rod, one end of which is hinged to the first support rod 11 around the fourth axis D, and the other end of which is hinged to the second support rod 12 around the fifth axis E.

[0009] The linkage member 5 comprises a linkage rod, one end of which is hinged to the lower end of the support frame 4 around the sixth axis F, and the other end of which is hinged to the upper end of the first support rod 11 around the seventh axis G.

[0010] When the stroller frame is in an unfolded state, the upper support rod 3, the support frame 4 and the second support rod 12 are connected to form an L shape.

[0011] The first support rod 11 includes a straight section 111 and a bent section 112 bent relative to the straight section 111. The sliding member 2 is arranged on the straight section 111. The linkage member 5 is arranged between the upper end of the bent section 112 and the lower end of the support frame 4. When the stroller frame is in the unfolded state, the upper support rod 3 is located at the front side of the bent section 112.

[0012] The stroller frame also includes an armrest assembly 8, which includes a linkage plate 81 whose lower end is hinged to the upper support rod 3 around an eighth axis N, and an armrest rod 82 is hinged to the upper end of the linkage plate 81 around a ninth axis H. The rear end of the armrest rod 82 is hinged to the linkage member 5 around a tenth axis I, and the front end of the armrest rod 82 is connected to a handle 83 for children to grasp.

[0013] The push rod assembly 7 includes a push rod 71 rotatably connected to the support frame 4 around a thirteenth axis M, and a push rod locking assembly 72 capable of locking the position of the push rod 71 is provided between the push rod 71 and the support frame 4.

[0014] The push rod 71 includes a push rod connecting shell 73, the support frame 4 includes a second connecting shell 41, and the push rod locking assembly 72 includes a plurality of push rod locking grooves 721 arranged on the push rod connecting shell 73 and the second connecting shell 41 along the circumferential direction. The push rod connecting shell 73 and the second connecting shell 41 are provided with a push rod first locking gear 722 that can simultaneously engage with the push rod locking grooves 721 on the two. A rotatable second rotating block 723 is provided between the push rod first locking gear 722 and the push rod connecting shell 73. A third return spring 725 is provided to push the first locking gear 722 of the push rod to slide and return to its original position. An exposed sliding button 726 is provided on the upper side of the push rod 71 to slide relative to it. A second cable 727 is provided between the sliding button 726 and the eccentric position of the second rotating block 723 to pull the second rotating block 723 to rotate when the sliding button 726 slides. The upper end of the push rod 71 is rotatably connected to a push handle 74. A locking assembly is provided between the push handle 74 and the push rod 71. The locking assembly includes A locking groove 751 is circumferentially arranged at the upper end of the push rod 71 and the lower end of the push handle 74, a locking gear 752 is provided between the push rod 71 and the push handle 74, which can move laterally in the space enclosed by the two and can engage with the locking grooves 751 on the two at the same time, a fifth return spring 753 is provided between the locking gear 752 and the push handle 74, and an exposed push cover 754 is provided on the upper end of the push rod 71 which can push the locking gear 752 to disengage from the locking groove 751 on the push rod 71.

[0015] The locking device includes a first locking component arranged between the support frame 4 and the upper end of the upper support rod 3 and a second locking component arranged between the lower end of the upper support rod 3 and the second support rod 12. The upper support rod 3 is also provided with a linkage component that can pull the second locking component to unlock when the first locking component is unlocked and the support frame 4 is rotated and folded relative to the upper support rod 3. The linkage component includes a rotating seat 10e rotatably connected to the upper support rod 3. A second pull rope 10f is arranged between the rotating seat 10e and the second locking component, and can pull the second locking component to unlock when the rotating seat 10e rotates. The support frame 4 is provided with a pushing portion 10g. The rotating seat 10e is provided with a pull rope 10f that can pull the second locking component to unlock when the rotating seat 10e rotates when the support frame 4 rotates relative to the upper support rod 3. A mating portion 10h is abutted against and fits to rotate the rotating seat 10e. A reset torsion spring 10i is also provided between the rotating seat 10e and the upper support rod 3, which can drive the rotating seat 10e to rotate and reset. The upper support rod 3 includes a first connecting shell 31, and the pushing portion 10g is provided on the second connecting shell 41. The first locking component includes a plurality of first locking grooves 101 provided on the first connecting shell 31 and the second connecting shell 41 along the circumferential direction. The first connecting shell 31 and the second connecting shell 41 are provided with locking splines 102 that can simultaneously engage with the first locking grooves 101 on the two. A rotatable first rotating block 103 is provided between the locking splines 102 and the second connecting shell 41. A plurality of first oblique protrusions 104 are provided along the circumferential direction, which can push the first rotating block 103 to move laterally when the first rotating block 103 rotates, so that the locking spline 102 is disengaged from the first locking groove 101 on the second connecting shell 41. A second reset spring 105 is provided between the first connecting shell 31 and the locking spline 102, which can push the locking spline 102 to slide and reset. An unlocking component 43 for unlocking the first locking component is provided on the support frame 4. The unlocking component 43 includes a fixed seat 431 provided on the support frame 4, and a sliding block 432 exposed and slidable relative to the fixed seat 431 is provided therein. The sliding block 432 is provided with an oblique hole groove 433, and a sliding block 432 is provided therein. The block 432 is capable of moving the pin shaft 434 laterally relative to the fixed seat 431 when sliding, and a first pull cable 435 is provided between the pin shaft 434 and the first rotating block 103, which can pull the first rotating block 103 to rotate when the pin shaft 434 slides, and the fixed seat 431 is also provided with a button 436 opposite to the sliding block 432, and the button 436 is provided with a sliding piece 437 which can be pressed by the button 436 and slide relative to the fixed seat 431, and the sliding piece 437 is provided with a blocking portion 438 capable of blocking the pin shaft 434 from sliding, and a making way groove 439 which can make way for the pin shaft 434 after the sliding piece 437 is pressed and slides, and a fourth return spring 430 is also provided between the sliding block 432 and the sliding piece 437.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. The push rod assembly of the stroller frame of the utility model can rotate relative to the support frame and can stay in the forward position and the reverse position. When the push rod assembly stays in the forward position, the adult and the child on the seat support face the same direction forward, and when the push rod assembly stays in the reverse position, the adult can face the child on the seat support, which is convenient for the adult to observe the child and take care of him / her. Therefore, the user can freely choose the stop position of the push rod assembly to suit his / her actual needs. In addition, when the stroller frame of the utility model is folded, the push rod assembly is first stopped in the forward position, and then the locking device is unlocked, and then the push rod assembly and the support frame are rotated forward together, the support frame and the push rod assembly rotate relative to the upper support rod and move closer to the upper support rod, and the lower end of the support frame pushes the linkage member backward. During this process, the linkage member rotates relative to the first support rod, and the seat support member rotates relative to the upper support rod and the first support rod, so that the upper support rod rotates relative to the sliding member and pushes the sliding member to slide along the first support rod. During the sliding process, the sliding member drives the second support rod to rotate relative to the sliding member through the transmission member and move closer to the first support rod, and finally the push rod assembly, the support frame, the upper support rod, the first support rod, the second support rod and the seat support member move closer together. Therefore, the entire stroller frame has a simple structure, is flexible to fold, and has a small volume after folding.

[0018] 2. The upper support rod of the utility model is rotatably connected with a linkage piece, the upper end of the linkage piece is hinged with a handrail rod, the rear end of the handrail rod is hinged on the linkage piece, and the front end of the handrail rod is connected with a grip for children to hold. Therefore, when the child stroller frame is folded, the handrail rod rotates relative to the linkage piece and the linkage piece, and the linkage piece rotates relative to the upper support rod, so that the handrail rod rotates toward the upper support rod and folds, and the folding operation of the handrail assembly is simple and quick.

[0019] 3. The utility model has a simple structure and is flexible to fold and unfold, which is convenient for adults to choose the direction of pushing according to actual needs and convenient for adults to look after children. Moreover, the utility model has a small volume after folding, which is convenient to carry and store, and is suitable for promotion and application.

Brief Description of the Drawings

[0020] Figure 1 It is a three-dimensional diagram of the utility model;

[0021] Figure 2 It is a side view of the push rod assembly of the utility model when it is in the forward position;

[0022] Figure 3 It is a side view of the push rod assembly of the utility model when it is in the reverse position;

[0023] Figure 4 It is a three-dimensional diagram of the utility model during the folding process;

[0024] Figure 5 It is a side view of the utility model during the folding process;

[0025] Figure 6 It is a three-dimensional diagram of the utility model in a folded state;

[0026] Figure 7 It is a cross-sectional view of the utility model during the folding process;

[0027] Figure 8 yes Figure 7 Magnified view at the center X;

[0028] Fig. 9 It is one of the exploded views of the components of the utility model;

[0029] Fig.10 It is a three-dimensional diagram of the push rod connecting shell of the utility model;

[0030] Fig.11 It is a three-dimensional diagram of the second rotating block of the utility model;

[0031] Fig.12 It is a three-dimensional diagram of the unlocking component of the utility model;

[0032] Fig.13 It is one of the exploded views of the unlocking component of the utility model;

[0033] Fig.14 This is the second exploded view of the unlocking component of the utility model;

[0034] Fig.15 is a cross-sectional view of the unlocking component of the utility model;

[0035] Fig.16 This is the second exploded view of the components of the utility model;

[0036] Fig.17 yes Fig.16 Magnified view at Y in the middle;

[0037] Fig.18 yes Fig.16 Magnified view at center Z;

[0038] Fig.19 It is a three-dimensional diagram of the second connecting shell of the utility model. [Specific implementation method]

[0039] The utility model is further described below in conjunction with the accompanying drawings:

[0040] like Figures 1 to 8As shown, a child stroller frame can be moved from an unfolded position to a folded position after a locking device is unlocked, comprising a first support rod 11 and a second support rod 12 both connected to wheels 13, the first support rod 11 is provided with a sliding member 2 that can slide relative to it, the sliding member 2 is rotatably connected to an upper support rod 3 around a first axis A, the upper end of the upper support rod 3 is connected to a support frame 4, the support frame 4 is provided with a ceiling bracket 42 that can be rotatably unfolded or folded relative to it, the support frame 4 is rotatably connected to the upper support rod 3 around a second axis B, a linkage member 5 hinged to the upper end of the first support rod 11 and deviating from the second axis B is provided on the support frame 4, and the second support rod 12 is hinged to the upper end of the first support rod 11. The third axis C is rotatably connected to the sliding member 2 or the upper support rod 3, and a transmission member 6 rotatably connected to the second support rod 12 and the first support rod 11 is also provided between the second support rod 12 and the first support rod 11. A seat support member 9 is provided between the upper support rod 3 and the first support rod 11. The front side of the seat support member 9 is rotatably connected to the upper support rod 3 around the eleventh axis J, and the rear side of the seat support member 9 is rotatably connected to the first support rod 11 around the twelfth axis K. A push rod assembly 7 that can rotate relative to the support frame 4 is rotatably connected to the support frame 4, and the position where the push rod assembly 7 stays includes a forward position that can push the child stroller frame forward and a reverse position that can push the child stroller frame reversely after rotating relative to the support frame 4. The push rod assembly 7 can rotate relative to the support frame 4 and can stay in the forward position and the reverse position. When the push rod assembly 7 stays in the forward position, the adult and the child on the seat support 9 face the same direction forward, and when the push rod assembly 7 stays in the reverse position, the adult can face the child on the seat support 9, which is convenient for the adult to observe the child and facilitate care. Therefore, the user can freely choose the stop position of the push rod assembly 7 to suit his or her actual needs. In addition, when the child stroller frame is folded, the push rod assembly 7 is first stopped in the forward position, and then the locking device is unlocked, and then the push rod assembly 7 and the support frame 4 are rotated forward together. During the folding process, the push rod assembly 7 and the support frame 4 act together synchronously, and the support frame 4 and the push rod assembly 7 rotate relative to the upper support rod 3 and move closer to the upper support rod 3, and the lower end of the support frame 4 pushes the linkage member 5 backward. During this process, the linkage member 5 rotates relative to the first support rod 11, and the seat support member 9 rotates relative to the upper support rod 3 and the first support rod 11, so that the upper support rod 3 rotates relative to the sliding member 2 and pushes the sliding member 2 to slide along the first support rod 11. During the sliding process, the sliding member 2 drives the second support rod 12 to rotate relative to the sliding member 2 through the transmission member 6 and move closer to the first support rod 11, and finally realizes that the push rod assembly 7, the support frame 4, the upper support rod 3, the first support rod 11, the second support rod 12 and the seat support member 9 are moved together. Therefore, the entire child stroller frame has a simple structure, is flexible to fold, and has a small volume after folding.

[0041] like Figures 2 to 5As shown, the upper support rod 3 is provided with a connecting seat 33, and the seat support member 9 includes a seat rod 91 rotatably connected to the connecting seat 33 around an eleventh axis J, and the rear end of the seat rod 91 is rotatably connected to the first support rod 11 around a twelfth axis K. Therefore, when the child stroller frame is folded, the seat rod 91 rotates relative to the upper support rod 3 and the first support rod 11, so that the upper support rod 3 can smoothly push the sliding member 2 to slide along the first support rod 11, so that the child stroller frame can be folded flexibly.

[0042] like Figures 2 to 5 As shown, the transmission member 6 comprises a transmission rod, one end of which is hinged to the first support rod 11 around the fourth axis D, and the other end of which is hinged to the second support rod 12 around the fifth axis E. Therefore, during the unfolding or folding process of the child stroller frame, the second support rod 12 can move smoothly, and the child stroller frame can be stable and reliable in the unfolded state.

[0043] like Figures 5 to 8 As shown, the linkage member 5 includes a linkage rod, one end of which is hinged to the lower end of the support frame 4 around the sixth axis F, and the other end of which is hinged to the upper end of the first support rod 11 around the seventh axis G.

[0044] like Figure 1 and Figure 2 As shown, when the stroller frame is in the unfolded state, the upper support rod 3, the support frame 4 and the second support rod 12 are connected in an L shape. Therefore, the stroller frame structure is simple and compact, and can be folded and folded flexibly.

[0045] like Figure 2 , Figure 3 and Figure 5 As shown, the first support rod 11 includes a straight section 111 and a bent section 112 bent relative to the straight section 111, the sliding member 2 is arranged on the straight section 111, the linkage member 5 is arranged between the upper end of the bent section 112 and the lower end of the support frame 4, and when the child stroller frame is in the unfolded state, the upper support rod 3 is located in front of the bent section 112. Therefore, the child stroller frame is simple and compact in structure in the unfolded state, and has good stability, and can be flexibly folded when folded, and has a small volume after folding, and occupies little space.

[0046] like Figure 1 , Figure 2 , Figure 3 and Figure 8As shown, the child stroller frame further includes an armrest assembly 8, the armrest assembly 8 includes a linkage piece 81 whose lower end is hinged to the upper support rod 3 around the eighth axis N, an armrest rod 82 is hinged to the upper end of the linkage piece 81 around the ninth axis H, the rear end of the armrest rod 82 is hinged to the linkage member 5 around the tenth axis I, and the front end of the armrest rod 82 is connected to a handle 83 for the child to grasp. When the child stroller frame is folded, the armrest rod 82 rotates relative to the linkage piece 81 and the linkage member 5, and the linkage piece 81 rotates relative to the upper support rod 3, so that the armrest rod 82 rotates toward the upper support rod 3 and folds, and the armrest assembly 8 realizes linkage folding, which is simple and quick.

[0047] like Figure 1 , Figure 2 , Figures 9 to 11 As shown, the push rod assembly 7 includes a push rod 71 rotatably connected to the support frame 4 around a thirteenth axis M, and a push rod locking assembly 72 capable of locking the position of the push rod 71 is provided between the push rod 71 and the support frame 4.

[0048] like Figures 9 to 11As shown, the push rod 71 includes a push rod connecting shell 73, the support frame 4 includes a second connecting shell 41, the push rod locking assembly 72 includes a plurality of push rod locking grooves 721 arranged on the push rod connecting shell 73 and the second connecting shell 41 along the circumferential direction, the push rod connecting shell 73 and the second connecting shell 41 are provided with a push rod first locking gear 722 that can be simultaneously engaged with the push rod locking grooves 721 on the two, a second rotating block 723 that can rotate is provided between the push rod first locking gear 722 and the push rod connecting shell 73, and the push rod connecting shell 73 is provided with a plurality of push rod locking grooves 721 arranged on the second connecting shell 41 along the circumferential direction. 23 moves laterally to disengage the second inclined protrusion 724 of the push rod first locking gear 722 from the push rod locking groove 721 on the push rod connecting shell 73, the second rotating block 723 is provided with a second inclined groove 728 cooperating with the second inclined protrusion 724, a third reset spring 725 is provided between the second connecting shell 41 and the first locking gear 722 of the push rod, which can push the first locking gear 722 of the push rod to slide and reset, the upper side of the push rod 71 is provided with an exposed sliding button 726 that can slide relative to it, and a second pull cable 727 is provided between the sliding button 726 and the eccentric position of the second rotating block 723, which can pull the second rotating block 723 to rotate when the sliding button slides. When the child stroller needs to change the position of the push rod assembly 7, the sliding button 726 is pushed upward, and the second pull cable 727 pulls the second rotating block 723 to rotate. During the rotation of the second rotating block 723, the second inclined protrusion 724 on the push rod connecting shell 73 pushes the second rotating block 723 to move horizontally, and the second rotating block 723 pushes the first locking gear 722 to disengage from the first locking groove 721 on the push rod connecting shell 73. At this time, the push rod assembly 7 can be rotated relative to the support frame 4, thereby switching the position of the push rod assembly 7 between the forward position and the reverse position.

[0049] like Figures 12 to 19As shown, the locking device includes a first locking component arranged between the support frame 4 and the upper end of the upper support rod 3 and a second locking component arranged between the lower end of the upper support rod 3 and the second support rod 12. The upper support rod 3 is also provided with a linkage component that can pull the second locking component to unlock when the first locking component is unlocked and the support frame 4 is rotated and folded relative to the upper support rod 3. The linkage component includes a rotating seat 10e rotatably connected to the upper support rod 3, and a rotating seat 10e is provided between the rotating seat 10e and the second locking component. A second pull rope 10f can be pulled to unlock the second locking component, the support frame 4 is provided with a push portion 10g, and the rotating seat 10e is provided with a matching portion 10h which can abut and cooperate with the push portion 10g to rotate the rotating seat 10e when the support frame 4 rotates relative to the upper support rod 3, and a reset torsion spring 10i which can drive the rotating seat 10e to rotate and reset is also provided between the rotating seat 10e and the upper support rod 3, the upper support rod 3 includes a first connecting shell 31, and the push portion 10g is arranged on the second connecting shell 41. The first locking component includes a plurality of first locking grooves 101 arranged on the first connecting shell 31 and the second connecting shell 41 along the circumferential direction, and locking splines 102 that can simultaneously engage with the first locking grooves 101 on the first connecting shell 31 and the second connecting shell 41 are provided in the first connecting shell 31 and the second connecting shell 41, and a first rotating block 103 that can rotate is provided between the locking spline 102 and the second connecting shell 41, and a plurality of first inclined protrusions 104 that can push the first rotating block 103 to move laterally when the first rotating block 103 rotates are provided on the second connecting shell 41 along the circumferential direction, and can disengage the locking spline 102 from the first locking groove 101 on the second connecting shell 41, and a second reset spring 105 that can push the locking spline 102 to slide and reset is provided between the first connecting shell 31 and the locking spline 102. The second support rod 12 includes a third connecting shell 122, the upper support rod 3 also includes a fourth connecting shell 32, the second locking component also includes a plurality of second locking grooves 10a arranged on the third connecting shell 121 and the fourth connecting shell 32 along the circumferential direction, the third connecting shell 121 and the fourth connecting shell 32 are provided with a second locking gear 10b that can simultaneously engage with the second locking grooves 10a on the two, a third rotating block 10c that can rotate is provided between the second locking gear 10b and the fourth connecting shell 32, the eccentric position of the third rotating block 10c is connected to the second pull rope 10f, a plurality of third oblique protrusions (not shown in the figure) are provided on the fourth connecting shell 32 along the circumferential direction, which can push the third rotating block 10c to move laterally when the third rotating block 10c rotates to disengage the second locking gear 10b from the second locking groove 10a on the fourth connecting shell 32, and a sixth reset spring 10d that can push the second locking gear 10b to slide and reset is provided between the third connecting shell 122 and the second locking gear 10b.The support frame 4 is provided with an unlocking component 43 for unlocking the first locking component, and the unlocking component 43 includes a fixed seat 431 provided on the support frame 4, and a sliding block 432 exposed and capable of sliding relative thereto is provided in the fixed seat 431, and an inclined hole groove 433 is provided on the sliding block 432, and a pin shaft 434 capable of moving laterally relative to the fixed seat 431 when the sliding block 432 slides is penetrated in the inclined hole groove 433, and a pull pin 434 capable of pulling the first rotating block 103 when the pin shaft 434 slides is provided between the pin shaft 434 and the first rotating block 103. The first rotating block 103 rotates the first pull cable 435, and the fixed seat 431 is also provided with a button 436 opposite to the sliding block 432. The button 436 is provided with a sliding sheet 437 which can be pressed by the button 436 to slide relative to the fixed seat 431, and the sliding sheet 437 is provided with a blocking portion 438 which can block the sliding of the pin shaft 434 and a making way groove 439 which can make way for the pin shaft 434 after the sliding sheet 437 is pressed and slid. A fourth reset spring 430 is also provided between the sliding block 432 and the sliding sheet 437.

[0050] like Figures 12 to 19As shown, when the stroller frame needs to be folded, the push rod assembly 7 is first adjusted to the forward position. Then the button 436 and the sliding block 432 are pressed, and the button 436 pushes the sliding sheet 437, so that the blocking portion 438 no longer blocks the pin 434, and the inclined hole 433 on the sliding block 432 pushes the pin 434 to move horizontally during the sliding process, and the pin 434 pulls the first rotating block 103 to rotate through the first cable 435, and the first rotating block 103 is pushed by the first inclined protrusion 104 on the second connecting shell 41 during the rotation process, and the first rotating block 103 moves horizontally to push the locking spline 102 out of the first locking groove 101 on the second connecting shell 41, and the first locking component is unlocked at this time, and the push rod assembly 7 and the support frame 4 can be rotated and folded relative to the upper support rod 3 together. During the rotation and folding process of the push rod assembly 7 and the support frame 4 relative to the upper support rod 3, the pushing portion 10g on the second connecting shell 41 pushes the matching portion 10h on the rotating seat 10e, so that the rotating seat 10e rotates. During the rotation of the rotating seat 10e, the second pull rope 10f is pulled, and the second pull rope 10f pulls the third rotating block 10c to rotate, and the third inclined protrusion on the fourth connecting shell 32 pushes the third rotating block 10c to move laterally, and the third rotating block 10c pushes the second locking gear 10b to disengage from the second locking groove 10a on the fourth connecting shell 32. At this time, the second locking component is unlocked and the linkage is unlocked, and the upper support rod 3 and the second support rod 12 can rotate relative to each other, thereby realizing the folding of the child stroller frame. Therefore, during operation, the first locking component can be unlocked by pressing the button 436 with the thumb and holding the sliding block 432 with the other four fingers, and then the second locking component can be unlocked through the linkage component by rotating the support frame 4 and the push rod assembly 7, thereby achieving folding. The entire folding operation can be operated with one hand, which is very convenient and fast. In addition, the button 436 and the sliding block 432 need to be pressed at the same time to unlock the first locking component, which can ensure safety and prevent mis-locking. Of course, other structural forms of locking devices can also be used, which will not be described here.

[0051] like Figure 1 , Figure 2 and Fig. 9As shown, the upper end of the push rod 71 is rotatably connected to a push handle 74, a locking assembly is provided between the push handle 74 and the push rod 71, and the locking assembly includes a locking groove 751 provided at the upper end of the push rod 71 and the lower end of the push handle 74 along the circumferential direction, a locking gear 752 is provided between the push rod 71 and the push handle 74, which can move laterally in the space surrounded by the two and can be engaged with the locking grooves 751 on the two at the same time, a fifth return spring 753 is provided between the locking gear 752 and the push handle 74, and an exposed push cover 754 is provided at the upper end of the push rod 71, which can push the locking gear 752 to disengage from the locking groove 751 on the push rod 71. The locking gear 752 can be pushed by pressing the push cover 754, so as to adjust the height of the push handle 74, so that the user can adjust it to a comfortable position according to his own needs.

[0052] like Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, the back side of the seat support 9 is also provided with a backrest assembly 92 which can be rotated and folded relative to the seat support 9, and the seat extension rod 93 which can be extended or retracted relative to the seat rod 91 is also provided below the seat rod 91. The arrangement of the backrest assembly 72 can make the child sit more comfortably and lie back. The seat extension rod 93 can be pulled out or retracted, and can extend the length of the seat rod 91 in the front-to-back direction. When the seat extension rod 93 is pulled out, the child can lie down and sleep on the seat support 9.

[0053] like Figure 6 As shown, the support frame 4 is provided with a protruding shaft 44, and the second support rod 12 is provided with an elastic hook 121 that can hook the protruding shaft 44 when the stroller frame is in a folded state, so that the folded state of the stroller can be maintained to prevent accidental unfolding.

Claims

1. A child stroller frame, which can be moved from an unfolded position to a folded position after a locking device is unlocked, characterized in that: The invention comprises a first support rod (11) and a second support rod (12), both of which are connected to a wheel (13); the first support rod (11) is provided with a sliding member (2) which can slide relative to the first support rod; the sliding member (2) is rotatably connected to an upper support rod (3) around a first axis (A); the upper end of the upper support rod (3) is connected to a support frame (4); the support frame (4) is provided with a ceiling bracket (42) which can be rotated and unfolded or folded relative to the upper support rod; the support frame (4) and the upper support rod (3) are rotatably connected around a second axis (B); a linkage member (5) is provided on the support frame (4) and deviates from the second axis (B) and is hinged to the upper end of the first support rod (11); the second support rod (12) is rotatably connected to the sliding member around a third axis (C); The invention relates to a child stroller frame having a plurality of push rods (2) and a plurality of push rods (7). The push rods (7) are rotatably connected to the child stroller frame. The push rods (7) are rotatably connected to the child stroller frame. The push rods (7) are rotatably connected to the child stroller frame. The push rods (7) are rotatably connected to the child stroller frame. The push rods (7) are rotatably connected to the child stroller frame. The push rods (7) are rotatably connected to the child stroller frame. The push rods (7) are arranged in a forward position for pushing the child stroller frame in a forward direction and a reverse position for pushing the child stroller frame in a reverse direction after rotating relative to the support frame (4).

2. The child stroller frame according to claim 1, characterized in that: The upper support rod (3) is provided with a connecting seat (33), and the seat support member (9) comprises a seat rod (91) rotatably connected to the connecting seat (33) around an eleventh axis (J), and a rear end of the seat rod (91) is rotatably connected to the first support rod (11) around a twelfth axis (K).

3. The child stroller frame according to claim 1, characterized in that: The transmission member (6) comprises a transmission rod, one end of which is hinged to the first support rod (11) around a fourth axis (D), and the other end of which is hinged to the second support rod (12) around a fifth axis (E).

4. The child stroller frame according to claim 1, characterized in that: The linkage member (5) comprises a linkage rod, one end of which is hinged to the lower end of the support frame (4) around a sixth axis (F), and the other end of which is hinged to the upper end of the first support rod (11) around a seventh axis (G).

5. The stroller frame according to claim 1, characterized in that: When the child stroller frame is in an unfolded state, the upper support rod (3), the support frame (4) and the second support rod (12) are connected in an L shape.

6. The child stroller frame according to claim 1, characterized in that: The first support rod (11) comprises a straight section (111) and a bent section (112) bent relative to the straight section (111); the sliding member (2) is arranged on the straight section (111); the linkage member (5) is arranged between the upper end of the bent section (112) and the lower end of the support frame (4); when the child stroller frame is in an unfolded state, the upper support rod (3) is located in front of the bent section (112).

7. The child stroller frame according to any one of claims 1 to 6, characterized in that: The invention also comprises an armrest assembly (8), wherein the armrest assembly (8) comprises a linkage plate (81) whose lower end is hinged to the upper support rod (3) around an eighth axis (N), an upper end of the linkage plate (81) is hinged to a handrail rod (82) around a ninth axis (H), a rear end of the handrail rod (82) is hinged to the linkage member (5) around a tenth axis (I), and a front end of the handrail rod (82) is connected to a handle (83) for children to grasp.

8. The child stroller frame according to any one of claims 1 to 6, characterized in that: The push rod assembly (7) comprises a push rod (71) rotatably connected to the support frame (4) around a thirteenth axis (M), and a push rod locking assembly (72) capable of locking the position of the push rod (71) is provided between the push rod (71) and the support frame (4).

9. The child stroller frame according to claim 8, characterized in that: The push rod (71) includes a push rod connecting shell (73), the support frame (4) includes a second connecting shell (41), the push rod locking assembly (72) includes a plurality of push rod locking grooves (721) arranged on the push rod connecting shell (73) and the second connecting shell (41) along the circumferential direction, the push rod connecting shell (73) and the second connecting shell (41) are provided with a push rod first locking gear (722) that can be simultaneously engaged with the push rod locking grooves (721) on both, and a push rod first locking gear (722) is provided between the push rod connecting shell (73) and the push rod connecting shell (73). The push rod connecting shell (73) is provided with a plurality of second oblique protrusions (724) along the circumferential direction, which can push the second rotating block (723) to move horizontally when the second rotating block (723) rotates, so as to disengage the first locking gear (722) of the push rod from the push rod locking groove (721) on the push rod connecting shell (73); the second rotating block (723) is provided with a second oblique groove (728) cooperating with the second oblique protrusion (724); the second connecting shell (41) and the first locking gear (722) of the push rod are connected to each other. A third return spring (725) is provided which can push the first locking gear (722) of the push rod to slide and return. An exposed sliding button (726) which can slide relative to the push rod is provided on the upper side of the push rod (71). A second pull cable (727) which can pull the second rotating block (723) to rotate when the sliding button (726) slides is provided between the sliding button (726) and the eccentric position of the second rotating block (723). The upper end of the push rod (71) is rotatably connected to a push handle (74). A locking assembly is provided between the push handle (74) and the push rod (71). The locking assembly includes a plurality of locking members which are connected along a circle. A locking groove (751) is circumferentially arranged at the upper end of the push rod (71) and the lower end of the push handle (74); a locking gear (752) is arranged between the push rod (71) and the push handle (74) and can move laterally in the space enclosed by the two and can engage with the locking grooves (751) on the two at the same time; a fifth return spring (753) is arranged between the locking gear (752) and the push handle (74); and a push cover (754) is arranged at the upper end of the push rod (71) and can push the locking gear (752) to disengage from the locking groove (751) on the push rod (71).

10. The child stroller frame according to claim 9, characterized in that: The locking device comprises a first locking component arranged between the support frame (4) and the upper end of the upper support rod (3) and a second locking component arranged between the lower end of the upper support rod (3) and the second support rod (12); the upper support rod (3) is also provided with a linkage component capable of pulling the second locking component to unlock when the first locking component is unlocked and the support frame (4) is rotated and folded relative to the upper support rod (3); the linkage component comprises a rotating seat (10e) rotatably connected to the upper support rod (3); a second pull rope (10f) is arranged between the rotating seat (10e) and the second locking component, which can pull the second locking component to unlock when the rotating seat (10e) rotates; the support frame (4) is provided with a pushing portion (10g); the rotating seat (10e) is provided with a pushing portion (10g); 0e) is provided with a mating portion (10h) which can abut against and cooperate with the pushing portion (10g) to rotate the rotating seat (10e) when the support frame (4) rotates relative to the upper support rod (3); a reset torsion spring (10i) which can drive the rotating seat (10e) to rotate and reset is also provided between the rotating seat (10e) and the upper support rod (3); the upper support rod (3) includes a first connecting shell (31); the pushing portion (10g) is provided on the second connecting shell (41); the first locking component includes a plurality of first locking grooves (101) which are provided on the first connecting shell (31) and the second connecting shell (41) along the circumferential direction; the first connecting shell (31) and the second connecting shell (41) are provided with first locking grooves (101) which can abut against and cooperate with the first locking grooves (101) on the first connecting shell (31) and the second connecting shell (41) 101), a locking spline (102) that is simultaneously engaged with the locking spline (102), a first rotating block (103) that can rotate is provided between the locking spline (102) and the second connecting shell (41), a plurality of first oblique protrusions (104) are provided on the second connecting shell (41) along the circumferential direction, which can push the first rotating block (103) to move laterally when the first rotating block (103) rotates, so that the locking spline (102) and the first locking groove (101) on the second connecting shell (41) are disengaged, a second return spring (105) that can push the locking spline (102) to slide and return is provided between the first connecting shell (31) and the locking spline (102), and an unlocking component for unlocking the first locking component is provided on the support frame (4). (43), the unlocking component (43) comprises a fixed seat (431) arranged on the support frame (4), the fixed seat (431) is provided with a sliding block (432) exposed and capable of sliding relative to the fixed seat (431), the sliding block (432) is provided with an inclined hole groove (433), the inclined hole groove (433) is penetrated with a pin shaft (434) capable of moving laterally relative to the fixed seat (431) when the sliding block (432) slides, a first cable (435) capable of pulling the first rotating block (103) to rotate when the pin shaft (434) slides is provided between the pin shaft (434) and the first rotating block (103), and the fixed seat (431) is also provided with a button (436) opposite to the sliding block (432),The button (436) is provided with a sliding sheet (437) that can be pressed by the button (436) to slide relative to the fixed seat (431), the sliding sheet (437) is provided with a blocking portion (438) that can block the pin shaft (434) from sliding, and a making way groove (439) that can make way for the pin shaft (434) after the sliding sheet (437) is pressed and slid, and a fourth return spring (430) is also provided between the sliding block (432) and the sliding sheet (437).

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