A child stroller frame and child stroller

Abstract

The utility model discloses a child stroller frame, including a bottom support frame, a first support frame rotatably connected to the bottom support frame around a first axis A, a second support frame rotatably connected to the bottom support frame around a second axis B, and the second support frame is cross-arranged with the first support frame, a sliding member that can slide relative to the second support frame is connected to the second support frame, the first support frame is rotatably connected to the sliding member and can move relative to the second support frame together with the sliding member, the first support frame is also connected to a push rod assembly that can be expanded or folded relative to the movement thereof, a front wheel is provided on the front side of the bottom support frame, and a rear wheel is provided on the rear side of the bottom support frame or at the lower end of the second support frame. The utility model also includes a child stroller, which adopts the above-mentioned child stroller frame, and a flexible and foldable seat pocket is provided between the second support frame and the push rod assembly, and the seat pocket constitutes the seat of the child stroller. The utility model male child stroller frame and child stroller of the utility model have simple structures and convenient folding operation.

Description

[Technical field]

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

[0002] Strollers are common products for children during their growth process. Currently, strollers on the market can generally be unfolded or folded. When unfolded, they can be used by children to sit in, and when folded, they can be easily stored or carried.

[0003] A Chinese patent for a child stroller (Announcement No. CN220884521U) discloses a foldable child stroller. When folding the child stroller, the support sleeve needs to slide upward along the support frame. During the upward sliding process, the support sleeve can drive the front foot assembly and the rear foot assembly to fold in the direction close to the hand push frame. In the process of folding, the front foot assembly and the rear foot assembly can drive the front foot support rod and the front foot assembly to fold together, and can also drive the rear foot support rod and the rear foot group to fold together, so that the hand push frame, the front foot group, the rear foot assembly 4, the front foot support rod and the rear foot support rod can all be folded in one place. Although the child stroller can be folded, when folding, one hand needs to hold the support frame, and the other hand needs to push the support sleeve to slide. Therefore, the folding operation requires two hands, and cannot be operated with one hand. The folding operation is inconvenient, and the structure is also relatively complicated.

[0004] Therefore, the present invention is just produced based on the above shortcomings. [Contents of the utility model]

[0005] The utility model aims to overcome the shortcomings of the prior art and provide a child stroller frame which has a simple structure and is easy to fold and operate.

[0006] The utility model also provides a child stroller with a simple structure and convenient folding operation.

[0007] The utility model is realized by the following technical solutions:

[0008] A child stroller frame, which can be moved from an unfolded position to a folded position after a locking device is unlocked, includes a bottom support frame 3, a first support frame 1 is rotatably connected to the bottom support frame 3 around a first axis A, a second support frame 2 is also rotatably connected to the bottom support frame 3 around a second axis B, and the second support frame 2 is cross-arranged with the first support frame 1, a sliding member 4 that can slide relative to the second support frame 2 is connected to the second support frame 2, the first support frame 1 is rotatably connected to the sliding member 4 and can move relative to the second support frame 2 together with the sliding member 4, the first support frame 1 is also connected to a push rod assembly 5 that can be moved relative to the first support frame, a front wheel 6 is provided on the front side of the bottom support frame 3, and a rear wheel 7 is provided on the rear side of the bottom support frame 3 or at the lower end of the second support frame 2.

[0009] The second support frame 2 includes a left support rod 21 and a right support rod 22 that are spaced apart from each other. The left support rod 21 and the right support rod 22 are rotatably connected to the bottom support frame 3 around the second axis B. The sliding member 4 includes a left slider 41 that can slide relative to the left support rod 21 and a right slider 42 that can slide relative to the right support rod 22. A connecting seat 101 that can rotate relative to the left slider 41 and the right slider 42 is provided between the left slider 41 and the right slider 42, and the first support frame 1 is connected to the connecting seat 101.

[0010] A connecting rod 23 is disposed at the upper ends of the left support rod 21 and the right support rod 22 to connect the two and to connect the seat 8 .

[0011] The first support frame 1 includes a support rod 11, the lower end of the support rod 11 is rotatably connected to the bottom support frame 3 around the first axis A, the upper end of the support rod 11 is connected to the push rod assembly 5, the push rod assembly 5 includes a push rod 51 rotatably connected to the support rod 11 around a third axis C, and a handle 52 is provided at the upper end of the push rod 51.

[0012] A connecting portion 12 is provided at the upper end of the support rod 11, a protruding portion 53 is provided at one side of the push rod 51, and the protruding portion 53 is rotatably connected to the connecting portion 12 around the third axis C. A notch 13 is formed on the support rod 11 and located on one side of the connecting portion 12. A matching portion 54 is provided on the push rod 51, which matches with the notch 13 when the child stroller frame is in the unfolded state. The locking device includes a first locking component 91 arranged between the matching portion 54 and the notch 13.

[0013] The first locking assembly 91 includes a first locking groove 911 provided on the support rod 11 and communicating with the notch 13, the matching portion 54 is provided with a first locking pin 912 which can slide therein and can engage with or disengage from the first locking groove 911, the handle 52 is provided with a switch assembly 913 which can pull the first locking pin 912 to disengage from the first locking groove 911, and the matching portion 54 is also provided with a first reset spring 914 which can push the first locking pin 912 to reset.

[0014] The handle 52 includes a transverse rod 521 arranged at the upper end of the push rod 51, and the switch assembly 913 includes a handle block 9131 rotatably connected to the transverse rod 521 and located on both sides of the push rod 51. A first pull rope 9132 is provided between the handle block 9131 and the first locking pin 912, which can pull the first locking pin 912 out of the first locking groove 911 when the handle block 9131 rotates relative to the transverse rod 521.

[0015] The locking device includes a first locking component 91 disposed between the push rod 51 and the support rod 11, a second locking component 92 is also disposed between the sliding member 4 and the second support frame 2, and a transmission member 93 is also disposed between the push rod 51 and the support rod 11, which can drive the second locking component 92 to unlock when the push rod 51 is rotated and folded relative to the support rod 11. The second locking component 92 includes a second locking hole 921 disposed on the left support rod 21 and the right support rod 22, and a second locking hole 921 is disposed in the connecting seat 101, which passes through the left slider 41 and the right slider 42 and can be engaged or disengaged with the second locking hole 921. Locking pin 922, the transmission member 93 includes a rotating block 931 rotatably connected to the support rod 11, a second pull rope 932 is provided between the rotating block 931 and the second locking pin 922, which can pull the second locking pin 922 out of the second locking hole 921 when the rotating block 931 rotates relative to the support rod 11, and a pushing block 933 is provided at the lower end of the push rod 51, which can push the rotating block 931 to rotate when it is rotated and folded relative to the support rod 11, and a second reset spring 923 is also provided between the connecting seat 101 and the second locking pin 922, which can push the second locking pin 922 to return to its original position.

[0016] The bottom support frame 3 includes a bottom rod 31 extending forward and backward, the front end of the bottom rod 31 is connected to a transverse bracket 32, the front wheel 6 is connected to the transverse bracket 32, the rear end of the bottom rod 31 is provided with an extension rod 33 extending upward, the second support frame 2 is rotatably connected to the extension rod 33 around the second axis B, the first support frame 1 is rotatably connected to the middle part of the bottom rod 31 around the first axis A, and the rear wheel 7 is connected to the rear side of the bottom rod 31.

[0017] A child stroller comprises the child stroller frame as described above, wherein a flexible and foldable seat pocket is provided between the second support frame 2 and the push rod assembly 5, and the seat pocket constitutes a seat 8 of the child stroller.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] 1. When the child stroller frame of the utility model is folded, the push rod assembly is first folded relative to the first support frame, and then the first support frame is rotated relative to the bottom support frame around the first axis, and the first support frame slides relative to the second support frame together with the sliding member, and the first support frame rotates relative to the sliding member. During this process, the second support frame rotates relative to the bottom support frame around the second axis and approaches the bottom support frame, so that the first support frame and the second support frame are both close to the bottom support frame, and the child stroller frame is folded. The entire folding operation process is very convenient and fast, and the one-handed folding operation can be achieved. In addition, the entire child stroller frame connecting rod mechanism is simple, the structure is simple, and it takes up little space after folding, which is easy to carry.

[0020] 2. The utility model stroller adopts the aforementioned stroller frame, and a flexible and foldable seat pocket is arranged between the second support frame and the push rod assembly as a seat. The entire stroller has a simple structure, and the flexible seat pocket can be folded along with it when folded. The folding operation is convenient and quick, and the folded volume is small and easy to carry.

Brief Description of the Drawings

[0021] Figure 1 This is a side view of the child stroller of the utility model in an unfolded state;

[0022] Figure 2 It is one of the three-dimensional diagrams of the framework of the child stroller of the utility model;

[0023] Figure 3 It is a three-dimensional diagram of the components of the frame of the child stroller of the utility model;

[0024] Figure 4 It is a side view of the frame of the child stroller of the utility model during the folding process;

[0025] Figure 5 It is a three-dimensional diagram of the frame of the child stroller of the utility model during the folding process;

[0026] Figure 6 This is a side view of the frame of the child stroller of the utility model in a folded state;

[0027] Figure 7 This is a three-dimensional diagram of the frame of the child stroller of the utility model in a folded state;

[0028] Figure 8 It is one of the exploded views of the components of the utility model;

[0029] Fig. 9 This is the second exploded view of the components of the utility model;

[0030] Fig.10 yes Fig. 9 Magnified view at D in the middle;

[0031] Fig.11 This is the third exploded view of the components of the utility model;

[0032] Fig.12 It is a partial cross-sectional view of the utility model;

[0033] Fig.13 This is the second stereoscopic diagram of the framework of the child stroller of the present invention. [Specific implementation method]

[0034] The utility model is further described below in conjunction with the accompanying drawings:

[0035] like Figures 1 to 7As shown, a child stroller frame can be moved from an unfolded position to a folded position after a locking device is unlocked, including a bottom support frame 3, a first support frame 1 is rotatably connected to the bottom support frame 3 around a first axis A, a second support frame 2 is also rotatably connected to the bottom support frame 3 around a second axis B, and the second support frame 2 is cross-arranged with the first support frame 1, a sliding member 4 that can slide relative to the second support frame 2 is connected to the second support frame 2, the first support frame 1 is rotatably connected to the sliding member 4 and can move relative to the second support frame 2 together with the sliding member 4, the first support frame 1 is also connected to a push rod assembly 5 that can be movably unfolded or folded relative to the first support frame, a front wheel 6 is provided on the front side of the bottom support frame 3, and a rear wheel 7 is provided on the rear side of the bottom support frame 3. When the framework of the child stroller is folded, the push rod assembly 5 is first folded relative to the first support frame 1, and the push rod assembly 5 is brought close to the first support frame 1, and then the first support frame 1 is rotated backward relative to the bottom support frame 3 around the first axis A, and the first support frame 1 slides toward the lower end of the second support frame 1 together with the sliding member 4. During this process, the first support frame 1 is also rotated relative to the sliding member 4, and the second support frame 2 is rotated relative to the bottom support frame 3 around the second axis B, and finally the second support frame 2 and the first support frame 1 are both brought close to the bottom support frame 3, so that the framework of the child stroller is folded. The whole folding process is simple and quick to operate, and the space occupied after folding is small, which is easy to carry. In this embodiment, the rear wheel 7 is connected to the rear end of the bottom support frame 3. Of course, the rear wheel 7 can also be connected to the lower end of the second support frame 2. When the second support frame 2 rotates relative to the bottom support frame 3, the rear wheel 7 moves with the second support frame 2.

[0036] like Figure 1 , Figure 2 and Figure 5 As shown, the bottom support frame 3 includes a bottom rod 31 extending forward and backward, the front end of the bottom rod 31 is connected to a transverse bracket 32, the front wheel 6 is connected to the transverse bracket 32, the rear end of the bottom rod 31 is provided with an extension rod 33 extending upward, the second support frame 2 is rotatably connected to the extension rod 33 around the second axis B, the first support frame 1 is rotatably connected to the middle part of the bottom rod 31 around the first axis A, and the rear wheel 7 is connected to the rear side of the bottom rod 31.

[0037] like Figure 2 , Figure 3 , Figure 5 and Figure 8As shown, the second support frame 2 includes a left support rod 21 and a right support rod 22 that are spaced apart from each other, and the left support rod 21 and the right support rod 22 are rotatably connected to the bottom support frame 3 around the second axis B, and the sliding member 4 includes a left slider 41 that can slide relative to the left support rod 21 and a right slider 42 that can slide relative to the right support rod 22, and a connecting seat 101 that can rotate relative to the left slider 41 and the right slider 42 is provided between the left slider 41 and the right slider 42, and the first support frame 1 is connected to the connecting seat 101. When the first support frame 1 rotates relative to the bottom support frame 3, the first support frame 1 rotates relative to the left slider 41 and the right slider 42 through the connecting seat 101, and the left slider 41 and the right slider 42 slide toward the lower end of the second support frame 2 together with the connecting seat 101, thereby realizing the folding of the child stroller frame. In this embodiment, a slide groove 25 is provided on the left support rod 21 and the right support rod 22, and the left slider 41 and the right slider 42 are arranged in the slide groove 25, which has a guiding function, so that the frame of the child stroller can be folded smoothly.

[0038] like Figure 1 and Figure 2 As shown, a connecting rod 23 is provided at the upper ends of the left support rod 21 and the right support rod 22 to connect the two and to connect the seat 8.

[0039] like Figure 2 and Figure 4 As shown, the first support frame 1 includes a support rod 11, the lower end of the support rod 11 is rotatably connected to the bottom support frame 3 around the first axis A, the upper end of the support rod 11 is connected to the push rod assembly 5, the push rod assembly 5 includes a push rod 51 rotatably connected to the support rod 11 around the third axis C, and the upper end of the push rod 51 is provided with a handle 52. When folding, the push rod 51 rotates relative to the support rod 11 around the third axis C and approaches the support rod 11, thereby achieving folding. Of course, the push rod 51 can also be set to a structure that is telescopic relative to the support rod 11. When unfolding, the push rod 51 is pulled out from the support rod 11, and when folding, the push rod 51 is retracted into the support rod 11.

[0040] like Figure 4 , Figure 5 , Fig. 9 and Fig.10As shown, the upper end of the support rod 11 is provided with a connecting portion 12, and one side of the push rod 51 is provided with a protruding protrusion 53, and the protrusion 53 is rotatably connected to the connecting portion 12 around the third axis C. A notch 13 is formed on the support rod 11 and located on one side of the connecting portion 12, and the push rod 51 is provided with a matching portion 54 that matches with the notch 13 when the child stroller frame is in the unfolded state, and the locking device includes a first locking assembly 91 disposed between the matching portion 54 and the notch 13. When the child stroller frame is in the unfolded state, the matching portion 54 is docked with the notch 13, and at this time, the first locking assembly 91 locks the push rod 51 and the support rod 11.

[0041] like Figure 4 , Figure 5 , Fig. 9 and Fig.10 As shown, the first locking assembly 91 includes a first locking groove 911 provided on the support rod 11 and communicating with the notch 13, a first locking pin 912 which can slide therein and can engage or disengage with the first locking groove 911 is provided in the matching portion 54, a switch assembly 913 which can pull the first locking pin 912 to disengage from the first locking groove 911 is provided on the handle 52, and a first return spring 914 which can push the first locking pin 912 to return is also provided in the matching portion 54. When folding is required, the switch assembly 913 is operated first, so that the first locking pin 912 is withdrawn from the first locking groove 911, and at this time, the push rod 51 can be rotated relative to the support rod 11 to fold.

[0042] like Figure 4 , Figure 5 , Fig. 9 and Fig.11As shown, the handle 52 includes a transverse rod 521 arranged at the upper end of the push rod 51, the switch assembly 913 includes a handle block 9131 rotatably connected to the transverse rod 521 and located on both sides of the push rod 51, a first pull rope 9132 is provided between the handle block 9131 and the first locking pin 912, which can pull the first locking pin 912 out of the first locking groove 911 when the handle block 9131 rotates relative to the transverse rod 521, the first locking assembly 91 also includes a two-way lock structure 915 that can prevent the handle block 9131 from rotating relative to the transverse rod 521, the two-way lock structure 915 includes a button 9151 that can slide relative to the transverse rod 521 and is exposed, the button 9151 is provided with a make way groove 9152 that can make way for the handle block 9131 when it slides to a set position, and a third reset spring 9153 is also provided between the transverse rod 521 and the button 9151 for pushing the button 9151 to reset. When the child stroller frame needs to be folded, the button 9151 is first pressed. After the button 9151 slides to the set position, the recess 9152 is aligned with the handle block 9131. At this time, the handle block 9131 can be pinched to rotate relative to the transverse rod 521. When the handle block 9131 rotates, the first locking pin 912 is pulled out of the first locking groove 911 through the first pull rope 9132. At this time, the first locking assembly 91 is unlocked, and the push rod 51 can be rotated and folded relative to the support rod 11. The provision of the two-way lock structure 915 can prevent the misoperation of the handle block 9131 and cause mislocking, thereby ensuring safety. In addition, the handle blocks 9131 are provided on both sides of the push rod 51. Therefore, no matter whether the user is used to pushing the stroller with the right hand or the left hand, the button 9151 can be conveniently pressed and the handle block 9131 can be pinched to rotate, so that the user can conveniently unlock the first locking assembly 91.

[0043] like Figures 8 to 10As shown, a second locking assembly 92 is further provided between the sliding member 4 and the second support frame 2, and a transmission member 93 is further provided between the push rod 51 and the support rod 11, which can drive the second locking assembly 92 to unlock when the push rod 51 is rotated and folded relative to the support rod 11. The second locking assembly 92 includes a second locking hole 921 provided on the left support rod 21 and the right support rod 22, and a second locking pin 922 is provided in the connecting seat 101 that passes through the left slider 41 and the right slider 42 and can be engaged with or disengaged from the second locking hole 921. The transmission member 93 The push rod 51 includes a rotating block 931 rotatably connected to the support rod 11, a second pull rope 932 is provided between the rotating block 931 and the second locking pin 922, which can pull the second locking pin 922 out of the second locking hole 921 when the rotating block 931 rotates relative to the support rod 11, a push block 933 is provided at the lower end of the push rod 51, which can push the rotating block 931 to rotate when it rotates and folds relative to the support rod 11, and a second reset spring 923 is also provided between the connecting seat 101 and the second locking pin 922, which can push the second locking pin 922 to reset. When the push rod 51 rotates and folds relative to the support rod 11, the push block 933 on the push rod 51 pushes the rotating block 931 to rotate, and the rotating block 931 pulls the second locking pin 922 through the second pull rope 932 during the rotation process, so that the second locking pin 922 is separated from the second locking hole 921 on the second support frame 2. Once separated, the sliding member 4 can slide relative to the second support frame 2, thereby realizing the folding of the child stroller frame. Therefore, after the first locking component 91 is unlocked by pressing the button 9151 and squeezing the handle block 9131, the second locking component 92 is unlocked through the transmission member 93 during the process of rotating the push rod 51, thereby realizing linked unlocking. The user can complete the unlocking and folding operations with one hand, making the folding operation of the child stroller frame very convenient and quick.

[0044] like Fig.13 As shown, the connecting rod 23 is also detachably connected with a rotatable and foldable T-shaped handrail 102, which is convenient for children to grasp when riding and ensures safety. Moreover, the T-shaped handrail 102 can also be rotated to achieve folding when the child stroller frame is folded.

[0045] like Figures 1 to 7 As shown, a child stroller comprises the child stroller frame as described above, and a flexible and foldable seat pocket is provided between the second support frame 2 and the push rod assembly 5, and the seat pocket constitutes a seat 8 of the child stroller. Since the seat pocket is flexible, the seat pocket can be folded along with the child stroller frame during folding, so that the child stroller has a simple structure, convenient and quick folding operation, and a small volume after folding, which is easy to carry. The seat pocket can be made of textile fabric.

[0046] like Figure 1 and Figure 5As shown, the handle 52 also includes a handlebar rod 522 which is arranged at both ends of the transverse rod 521 and extends forward, the upper end of the seat pocket is connected to the handlebar rod 522, the second support frame 2 is provided with a connecting frame 24, the rear end of the seat pocket is connected to the connecting frame 24, and the front end of the seat pocket is connected to the connecting rod 23.

[0047] The embodiment is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiment, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the present purpose.

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 bottom support frame (3), wherein the bottom support frame (3) is rotatably connected to a first support frame (1) around a first axis (A), and the bottom support frame (3) is also rotatably connected to a second support frame (2) around a second axis (B), and the second support frame (2) is cross-arranged with the first support frame (1), and the second support frame (2) is connected to a sliding member (4) that can slide relative to the second support frame (2), and the first support frame (1) is rotatably connected to the sliding member (4) and can move relative to the second support frame (2) together with the sliding member (4), and the first support frame (1) is also connected to a push rod assembly (5) that can be moved relative to the first support frame, and a front wheel (6) is provided on the front side of the bottom support frame (3), and a rear wheel (7) is provided on the rear side of the bottom support frame (3) or the lower end of the second support frame (2).

2. The child stroller frame according to claim 1, characterized in that: The second support frame (2) comprises a left support rod (21) and a right support rod (22) which are spaced apart from each other. The left support rod (21) and the right support rod (22) are rotatably connected to the bottom support frame (3) around the second axis (B). The sliding member (4) comprises a left slider (41) which can slide relative to the left support rod (21) and a right slider (42) which can slide relative to the right support rod (22). A connecting seat (101) which can rotate relative to the left slider (41) and the right slider (42) is provided between the left slider (41) and the right slider (42). The first support frame (1) is connected to the connecting seat (101).

3. The child stroller frame according to claim 2, characterized in that: The upper ends of the left support rod (21) and the right support rod (22) are provided with a connecting rod (23) connecting the two and used for connecting the seat (8).

4. The child stroller frame according to claim 2, characterized in that: The first support frame (1) comprises a support rod (11), the lower end of the support rod (11) is rotatably connected to the bottom support frame (3) around the first axis (A), the upper end of the support rod (11) is connected to the push rod assembly (5), the push rod assembly (5) comprises a push rod (51) rotatably connected to the support rod (11) around a third axis (C), and the upper end of the push rod (51) is provided with a handle (52).

5. The child stroller frame according to claim 4, characterized in that: The support rod (11) is provided with a connecting portion (12) at the upper end, and a protruding portion (53) is provided on one side of the push rod (51). The protruding portion (53) is rotatably connected to the connecting portion (12) around the third axis (C). A notch (13) is formed on the support rod (11) and located on one side of the connecting portion (12). The push rod (51) is provided with a matching portion (54) that matches with the notch (13) when the child stroller frame is in an unfolded state. The locking device includes a first locking component (91) arranged between the matching portion (54) and the notch (13).

6. The child stroller frame according to claim 5, characterized in that: The first locking assembly (91) comprises a first locking groove (911) provided on the support rod (11) and communicating with the notch (13); a first locking pin (912) capable of sliding therein and engaging with or disengaging from the first locking groove (911) is provided in the matching portion (54); a switch assembly (913) capable of pulling the first locking pin (912) to disengage from the first locking groove (911) is provided on the handle (52); and a first return spring (914) capable of pushing the first locking pin (912) to return to its original position is also provided in the matching portion (54).

7. The child stroller frame according to claim 6, characterized in that: The handle (52) includes a transverse rod (521) arranged at the upper end of the push rod (51), and the switch assembly (913) includes a handle block (9131) rotatably connected to the transverse rod (521) and located on both sides of the push rod (51). A first pull rope (9132) is provided between the handle block (9131) and the first locking pin (912), which can pull the first locking pin (912) out of the first locking groove (911) when the handle block (9131) rotates relative to the transverse rod (521).

8. The child stroller frame according to claim 4, characterized in that: The locking device comprises a first locking component (91) arranged between the push rod (51) and the support rod (11), a second locking component (92) is also arranged between the sliding member (4) and the second support frame (2), a transmission member (93) is also arranged between the push rod (51) and the support rod (11) and can drive the second locking component (92) to unlock when the push rod (51) is rotated and folded relative to the support rod (11), the second locking component (92) comprises a second locking hole (921) arranged on the left support rod (21) and the right support rod (22), and a second locking hole (921) is arranged in the connecting seat (101) and passes through the left slider (41) and the right slider (42) and can be engaged with or disengaged from the second locking hole (921). The transmission member (93) comprises a rotating block (931) rotatably connected to the support rod (11); a second pull rope (932) is provided between the rotating block (931) and the second locking pin (922) and can pull the second locking pin (922) to disengage from the second locking hole (921) when the rotating block (931) rotates relative to the support rod (11); a push block (933) is provided at the lower end of the push rod (51) and can push the rotating block (931) to rotate when the push rod (51) is rotated and folded relative to the support rod (11); and a second reset spring (923) is also provided between the connecting seat (101) and the second locking pin (922) and can push the second locking pin (922) to reset.

9. The child stroller frame according to claim 1, characterized in that: The bottom support frame (3) comprises a bottom rod (31) extending forward and backward, the front end of the bottom rod (31) is connected to a transverse bracket (32), the front wheel (6) is connected to the transverse bracket (32), the rear end of the bottom rod (31) is provided with an extension rod (33) extending upward, the second support frame (2) is rotatably connected to the extension rod (33) around a second axis (B), the first support frame (1) is rotatably connected to the middle part of the bottom rod (31) around a first axis (A), and the rear wheel (7) is connected to the rear side of the bottom rod (31).

10. A baby stroller, characterized in that: It comprises a child stroller frame as claimed in any one of claims 1 to 9, wherein a flexible and foldable seat pocket is provided between the second support frame (2) and the push rod assembly (5), and the seat pocket constitutes a seat (8) of the child stroller.

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