Stroller frame

Abstract

The utility model discloses a stroller frame which comprises a front supporting rod (1), the upper end of the front supporting rod (1) is rotatably connected with a rear supporting rod (3) around a first axis (A), the upper end of the front supporting rod (1) is further rotatably connected with a push rod assembly (5) and a seat supporting piece (6) around a second axis (B), and a sliding piece (7) capable of sliding along the front supporting rod (1) is arranged on the front supporting rod (1). A front connecting rod (81) hinged to the sliding piece (7) and the seat supporting piece (6) is arranged between the sliding piece (7) and the seat supporting piece (6), a rear connecting rod (82) hinged to the sliding piece (7) and the rear supporting rod (3) is arranged between the sliding piece (7) and the rear supporting rod (3), and a driving piece (9) capable of pushing the sliding piece (7) to slide along the front supporting rod (1) when the push rod assembly (5) rotates forwards and gets close to the front supporting rod (1) is further arranged between the sliding piece (7) or the front connecting rod (81) and the push rod assembly (5). The folding chair is simple in structure and convenient to fold.

Description

[Technical field]

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

[0002] At present, baby strollers have become an indispensable item for children in their growth process. Baby strollers on the market can generally be folded or unfolded, and can be used for children to sit in the unfolded state, while being easy to be stored or stored in the folded state.

[0003] China Utility Model Patent Publication No. (CN220884521U) discloses a child stroller, the frame of which includes a support sleeve, a hand push frame, a front foot assembly, a rear foot assembly, a front foot support rod and a rear foot support rod; in an unfolded state, the support sleeve is slidably mounted on the hand push frame, and the support sleeve can be selectively fixed or detached from the hand push frame; one end of the front foot assembly is rotatably connected to the support sleeve; the rear foot assembly and the front foot assembly are respectively located on opposite sides of the hand push frame, and one end of the rear foot assembly is rotatably connected to the support sleeve; the front foot support rod One end of the support sleeve is rotatably connected to the bottom of the push frame, the other end of the front foot support rod extends obliquely upward, and the front foot support rod is also rotatably connected to the front foot assembly; one end of the rear foot support rod is rotatably connected to the bottom of the push frame, and the other end of the rear foot support rod extends obliquely downward and is rotatably connected to the rear foot assembly; when the frame is in a folded state, the support sleeve slides upward along the push frame, driving the front foot assembly and the rear foot assembly to fold in the direction close to the push frame, and driving the front foot support rod and the front foot assembly to fold together, and driving the rear foot support rod and the rear foot assembly to fold together. Although the child stroller can be folded, when the support sleeve drives the front foot assembly and the rear foot assembly to fold, the support sleeve needs to slide upward along the push frame, which is laborious and inconvenient to operate. In addition, the structure of the child stroller 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 is realized by the following technical solutions:

[0007] A child stroller frame, which can be moved from an unfolded position to a folded position after a locking device is unlocked, comprises a front support rod 1, a front wheel assembly 1a is provided at the lower end of the front support rod 1, the upper end of the front support rod 1 is rotatably connected to a rear support rod 3 around a first axis A, the lower end of the rear support rod 3 is provided with a rear wheel assembly 3a, the upper end of the front support rod 1 is also rotatably connected to a push rod assembly 5 and a seat support member 6 around a second axis B, the front support rod 1 is provided with a sliding member 7 that can slide along the front support rod 7, a front connecting rod 81 hinged to the sliding member 7 and the seat support member 6 is provided between the sliding member 7 and the seat support member 6, a rear connecting rod 82 hinged to the sliding member 7 and the rear support rod 3 is provided between the sliding member 7 and the rear support rod 3, and a driving member 9 is also provided between the sliding member 7 or the front connecting rod 81 and the push rod assembly 5, which can push the sliding member 7 to slide along the front support rod 1 when the push rod assembly 5 rotates forward and approaches the front support rod 1.

[0008] The front support rod 1, the rear support rod 3, the push rod assembly 5 and the seat support 6 are coaxially connected to each other.

[0009] The seat support member 6 includes a left support rod 61 and a right support rod 62. The front side of the left support rod 61 is bent toward one side of the front support rod 1, and the front side of the right support rod 62 is bent toward the other side of the front support rod 1. The rear ends of the left support rod 61 and the right support rod 62 are rotatably connected to the upper end of the front support rod 1, and the front ends of the left support rod 61 and the right support rod 62 are provided with a transverse rod 63 connecting the two.

[0010] The sliding member 7 is a sliding sleeve arranged on the front support rod 1, one end of the front connecting rod 81 is hinged to the seat support member 6 around the third axis C, the other end of the front connecting rod 81 is hinged to the sliding sleeve around the fourth axis D, one end of the rear connecting rod 82 is hinged to the rear support rod 3 around the fifth axis E, and the other end of the rear connecting rod 82 is hinged to the sliding sleeve around the sixth axis F.

[0011] The driving member 9 comprises a driving rod 91, one end of which is hinged to the lower part of the push rod assembly 5 around the seventh axis G, and the other end of which is hinged to the sliding sleeve around the eighth axis H.

[0012] The driving rod 91, the front connecting rod 81 and the sliding sleeve are coaxially hinged.

[0013] The rear support rod 3 is provided with a transverse shaft 31 , and the rear connecting rod 82 is rotatably connected to the transverse shaft 31 around the fifth axis E.

[0014] The push rod assembly 5 includes a lower push rod 51 rotatably connected to the front support rod 1, an upper push rod 52 is provided inside the lower push rod 51 and can slide relative to the lower push rod 51, a push handle 53 extending forward is provided at the upper end of the upper push rod 52, a flexible and foldable seat pocket 2 is provided between the seat support 6 and the push handle 53, the front end of the seat pocket 2 is connected to the upper ends of the left support rod 61 and the right support rod 62, and the upper end of the seat pocket 2 is connected to the push handle 53 through a first rope 21.

[0015] A hook 54 is also provided at the lower portion of the push rod assembly 5 , and the rear end of the seat pocket 2 is hung on the hook 54 via a second rope 22 .

[0016] The front support rod 1 includes a first connecting seat 11, the rear support rod 3 includes a second connecting seat 32, and the push rod assembly 5 also includes a third connecting seat 55 connected to the lower push rod 51. The front support rod 1, the push rod assembly 5 and the rear support rod 3 are rotatably connected to each other through the first connecting seat 11, the second connecting seat 32 and the third connecting seat 55. The locking device includes a sliding pin 41 arranged in the first connecting seat 11 and capable of sliding relative thereto, and the third connecting seat 55 is provided with a locking hole that can engage or disengage with the sliding pin 41. 42, the first connecting seat 11 is provided with a first return spring 43 that can push the sliding pin 41 to return to its original position, the third connecting seat 55 is provided with a sliding block 44 that can slide relative to it, the sliding block 44 is provided with a pushing portion 45 that can push the sliding pin 41 out of the locking hole 42 when it slides downward, the lower end of the upper push rod 52 is provided with a pushing portion 56 that can push the sliding block 44 to slide when it slides relative to the lower push rod 51, and the third connecting seat 55 is also provided with a second return spring 46 that can push the sliding block 44 to return to its original position.

[0017] Compared with the prior art, the utility model has the following advantages: when the child stroller frame of the utility model is folded, the locking device is first unlocked, and then the push rod assembly is pushed forward. During the process of the push rod assembly rotating forward relative to the front support rod, the driving member on the push rod assembly pushes the sliding member downward, and the front connecting rod is hinged between the seat support member and the sliding member, and the rear connecting rod is hinged between the sliding member and the rear support rod, so when the sliding member slides downward along the front support rod, the seat support member and the rear support rod are pulled close to the front support rod through the front connecting rod and the rear connecting rod, and finally the push rod assembly is also close to the front support rod, thereby realizing the folding of the entire child stroller frame. The entire folding operation is very convenient and quick, and only the locking device needs to be unlocked and then the push rod assembly is pushed forward, which is very labor-saving, and the entire child stroller structure is also very simple and low in cost.

Brief Description of the Drawings

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 yes Figure 1 Magnified view at the center X;

[0020] Figure 3 It is a side view of the utility model in an unfolded state;

[0021] Figure 4 It is a three-dimensional diagram of the components of the utility model;

[0022] Figure 5 It is a partial cross-sectional view of the utility model;

[0023] Figure 6 It is an exploded view of the components of the utility model;

[0024] Figure 7 It is a three-dimensional diagram of the utility model in a folded state. [Specific implementation method]

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] like Figures 1 to 4 as well as Figure 7 As shown, a child stroller frame can be moved from an unfolded position to a folded position after a locking device is unlocked, comprising a front support rod 1, a front wheel assembly 1a is provided at the lower end of the front support rod 1, the upper end of the front support rod 1 is rotatably connected to a rear support rod 3 around a first axis A, the lower end of the rear support rod 3 is provided with a rear wheel assembly 3a, the upper end of the front support rod 1 is also rotatably connected to a push rod assembly 5 and a seat support member 6 around a second axis B, a sliding member 7 that can slide along the front support rod 1 is provided, a front connecting rod 81 hinged to the sliding member 7 and the seat support member 6 is provided between the sliding member 7 and the seat support member 6, a rear connecting rod 82 hinged to the sliding member 7 and the rear support rod 3 is provided between the sliding member 7 and the rear support rod 3, and a driving member 9 that can push the sliding member 7 to slide along the front support rod 1 when the push rod assembly 5 rotates forward and approaches the front support rod 1 is also provided between the sliding member 7 or the front connecting rod 81 and the push rod assembly 5. When the child stroller frame is folded, the locking device is first unlocked, and then the push rod assembly 5 is pushed forward. During the process of the push rod assembly 5 rotating forward relative to the front support rod 1, the driving member 9 on the push rod assembly 5 pushes the sliding member 7 downward, and the front connecting rod 81 is hinged between the seat support member 6 and the sliding member 7, and the rear connecting rod 82 is hinged between the sliding member 7 and the rear support rod 3, so when the sliding member 7 slides downward along the front support rod 1, the seat support member 6 and the rear support rod 3 are pulled close to the front support rod 1 by the front connecting rod 81 and the rear connecting rod 82, and finally the push rod assembly 5 is also close to the front support rod 1, thereby realizing the folding of the entire child stroller frame. The entire folding operation is very convenient and fast, and only the locking device needs to be unlocked and then the push rod assembly 5 is pushed forward, which is very labor-saving, and the entire child stroller structure is also very simple. In the present embodiment, the front support rod 1, the rear support rod 3, the push rod assembly 5 and the seat support member 6 are coaxially connected to each other.

[0027] like Figures 2 to 6 As shown, the seat support member 6 comprises a left support rod 61 and a right support rod 62, the front side of the left support rod 61 is bent toward one side of the front support rod 1, and the front side of the right support rod 62 is bent toward the other side of the front support rod 1, so that the front side of the seat support member has a sufficient load-bearing width, while the rear side is very compact, and the rear ends of the left support rod 61 and the right support rod 62 are rotatably connected to the upper end of the front support rod 1. The front ends of the left support rod 61 and the right support rod 62 are provided with a transverse rod 63 connecting the two, so as to enhance the load-bearing capacity of the seat support member 6.

[0028] like Figures 1 to 4 As shown, the sliding member 7 is a sliding sleeve arranged on the front support rod 1, one end of the front connecting rod 81 is hinged to the seat support member 6 around the third axis C, the other end of the front connecting rod 81 is hinged to the sliding sleeve around the fourth axis D, one end of the rear connecting rod 82 is hinged to the rear support rod 3 around the fifth axis E, and the other end of the rear connecting rod 82 is hinged to the sliding sleeve around the sixth axis F.

[0029] like Figures 1 to 6 As shown, the driving member 9 includes a driving rod 91, one end of which is hinged to the lower part of the push rod assembly 5 around the seventh axis G, and the other end of which is hinged to the sliding sleeve around the eighth axis H. When the push rod assembly 5 rotates forward, the push rod assembly 5 applies a thrust to the upper end of the driving rod 91, and the upper end of the driving rod 91 rotates relative to the push rod assembly 5 around the seventh axis G, and the driving rod 91 pushes the sliding sleeve downward, so that the sliding sleeve slides downward along the front support rod 1. During the downward sliding process, the sliding sleeve pulls the seat support 6 and the rear support rod 3 to the front support rod 1 through the front connecting rod 81 and the rear connecting rod 82. Therefore, by arranging the driving rod 91 hinged to the sliding sleeve and the push rod assembly 5 between the two, the linkage folding of the seat support 6 and the rear support rod 3 can be achieved, so that the folding operation of the child stroller frame is convenient and quick. In this embodiment, the driving rod 91, the front connecting rod 81 and the sliding sleeve are coaxially hinged, so that the child stroller frame can be folded smoothly and folded flexibly.

[0030] like Figure 4 , Figure 6 and Figure 7 As shown, the rear support rod 3 is provided with a transverse shaft 31, and the rear connecting rod 82 is rotatably connected to the transverse shaft 31 around the fifth axis E. The transverse shaft 31 also connects the two rear support rods 3 transversely to ensure the structural strength of the child stroller frame.

[0031] like Figures 1 to 5As shown, the push rod assembly 5 comprises a lower push rod 51 rotatably connected to the front support rod 1, an upper push rod 52 is arranged inside the lower push rod 51 and can slide relative thereto, a push handle 53 is arranged at the upper end of the upper push rod 52 and extends forward, a flexible and foldable seat bag 2 is arranged between the seat support 6 and the push handle 53, the front end of the seat bag 2 is connected to the upper ends of the left support rod 61 and the right support rod 62, and the upper end of the seat bag 2 is connected to the push handle 53 through the first rope 21. When the child stroller frame is folded, the upper push rod 52 is first slid and retracted into the lower push rod 51, and then the push rod assembly 5 is rotated forward. The arrangement of the upper push rod 52 and the lower push rod 51 enables the push rod assembly 5 to have a sufficient length for adults to push. The flexible seat bag 2 can be made of woven fabric and can be directly folded when the child stroller frame is folded. The locking mechanism between the upper push rod 52 and the lower push rod 51 can adopt a traditional structure of a bayonet pin and a bayonet hole, which will not be repeated here.

[0032] like Figure 3 and Figure 4 As shown, a hook 54 is further provided at the lower portion of the push rod assembly 5, and the rear end of the seat pocket 2 is hung on the hook 54 through a second rope 22, so that the seat pocket 2 is tightened when the stroller frame is unfolded, thereby having sufficient bearing capacity and making the child sit comfortably.

[0033] like Figures 4 to 6As shown, the front support rod 1 includes a first connecting seat 11, the rear support rod 3 includes a second connecting seat 32, and the push rod assembly 5 also includes a third connecting seat 55 connected to the lower push rod 51. The front support rod 1, the push rod assembly 5 and the rear support rod 3 are rotatably connected to each other through the first connecting seat 11, the second connecting seat 32 and the third connecting seat 55. The locking device includes a sliding pin 41 that is arranged in the first connecting seat 11 and can slide relative to it. The third connecting seat 55 is provided with a lock that can engage or disengage with the sliding pin 41. The first connecting seat 11 is provided with a first return spring 43 capable of pushing the sliding pin 41 to return to its original position, the third connecting seat 55 is provided with a sliding block 44 capable of sliding relative thereto, the sliding block 44 is provided with a push portion 45 capable of pushing the sliding pin 41 out of the locking hole 42 when it slides downward, the lower end of the upper push rod 52 is provided with a push portion 56 capable of pushing the sliding block 44 to slide when it slides relative to the lower push rod 51, and the third connecting seat 55 is also provided with a second return spring 46 capable of pushing the sliding block 44 to return to its original position. When the child stroller frame needs to be folded, the upper push rod 52 is slid downward, and the upper push rod 52 pushes the sliding block 44 through the push portion 56 at its lower end during the downward sliding process, and the push portion 45 at the lower end of the sliding block 44 pushes the sliding pin 41, so that the sliding pin 41 is separated from the locking hole 42. Once the sliding pin 41 is separated from the locking hole 42, the push rod assembly 5 can be rotated relative to the front support rod 1, thereby realizing the folding of the child stroller frame. Therefore, when folding, the locking device can be unlocked by sliding the upper push rod 52 downwards, and then the push rod assembly 5 is rotated forward. The folding operation is very convenient and quick, and is suitable for promotion and application.

[0034] 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 front support rod (1), wherein the lower end of the front support rod (1) is provided with a front wheel assembly (1a), the upper end of the front support rod (1) is rotatably connected to a rear support rod (3) around a first axis (A), the lower end of the rear support rod (3) is provided with a rear wheel assembly (3a), the upper end of the front support rod (1) is also rotatably connected to a push rod assembly (5) and a seat support member (6) around a second axis (B), the front support rod (1) is provided with a sliding member (7) which can slide along the front support rod, a front connecting rod (81) which is hinged to the sliding member (7) and the seat support member (6) is provided between the sliding member (7) and the rear support rod (3), a rear connecting rod (82) which is hinged to the sliding member (7) and the rear support rod (3), and a driving member (9) which can push the sliding member (7) to slide along the front support rod (1) when the push rod assembly (5) rotates forward and approaches the front support rod (1).

2. The child stroller frame according to claim 1, characterized in that: The front support rod (1), the rear support rod (3), the push rod assembly (5) and the seat support member (6) are coaxially connected to each other.

3. The child stroller frame according to claim 1 or 2, characterized in that: The seat support member (6) comprises a left support rod (61) and a right support rod (62); the front side of the left support rod (61) is bent toward one side of the front support rod (1); the front side of the right support rod (62) is bent toward the other side of the front support rod (1); the rear ends of the left support rod (61) and the right support rod (62) are rotatably connected to the upper end of the front support rod (1); and the front ends of the left support rod (61) and the right support rod (62) are provided with a transverse rod (63) connecting the two.

4. The child stroller frame according to claim 1 or 2, characterized in that: The sliding member (7) is a sliding sleeve arranged on the front support rod (1); one end of the front connecting rod (81) is hinged on the seat support member (6) around a third axis (C); the other end of the front connecting rod (81) is hinged on the sliding sleeve around a fourth axis (D); one end of the rear connecting rod (82) is hinged on the rear support rod (3) around a fifth axis (E); and the other end of the rear connecting rod (82) is hinged on the sliding sleeve around a sixth axis (F).

5. The child stroller frame according to claim 4, characterized in that: The driving member (9) comprises a driving rod (91), one end of which is hinged to the lower part of the push rod assembly (5) around a seventh axis (G), and the other end of which is hinged to the sliding sleeve around an eighth axis (H).

6. The child stroller frame according to claim 5, characterized in that: The driving rod (91), the front connecting rod (81) and the sliding sleeve are coaxially hinged.

7. The child stroller frame according to claim 4, characterized in that: The rear support rod (3) is provided with a transverse shaft (31), and the rear connecting rod (82) is rotatably connected to the transverse shaft (31) around a fifth axis (E).

8. The child stroller frame according to claim 3, characterized in that: The push rod assembly (5) comprises a lower push rod (51) rotatably connected to the front support rod (1), an upper push rod (52) is provided inside the lower push rod (51) and can slide relative to the lower push rod, a push handle (53) extending forward is provided at the upper end of the upper push rod (52), a flexible and foldable seat pocket (2) is provided between the seat support (6) and the push handle (53), the front end of the seat pocket (2) is connected to the upper ends of the left support rod (61) and the right support rod (62), and the upper end of the seat pocket (2) is connected to the push handle (53) via a first rope (21).

9. The child stroller frame according to claim 8, characterized in that: The lower part of the push rod assembly (5) is also provided with a hook (54), and the rear end of the seat pocket (2) is hung on the hook (54) through a second rope (22).

10. The child stroller frame according to claim 8, characterized in that: The front support rod (1) includes a first connecting seat (11), the rear support rod (3) includes a second connecting seat (32), and the push rod assembly (5) also includes a third connecting seat (55) connected to the lower push rod (51). The front support rod (1), the push rod assembly (5) and the rear support rod (3) are rotatably connected to each other through the first connecting seat (11), the second connecting seat (32) and the third connecting seat (55). The locking device includes a sliding pin (41) arranged in the first connecting seat (11) and capable of sliding relative to the first connecting seat. The third connecting seat (55) is provided with a locking hole that can engage with or disengage from the sliding pin (41). (42), the first connecting seat (11) is provided with a first return spring (43) capable of pushing the sliding pin (41) to return to its original position, the third connecting seat (55) is provided with a sliding block (44) capable of sliding relative to it, the sliding block (44) is provided with a pushing portion (45) capable of pushing the sliding pin (41) out of the locking hole (42) when the sliding block (44) slides downward, the lower end of the upper push rod (52) is provided with a pushing portion (56) capable of pushing the sliding block (44) to slide when the upper push rod (52) slides relative to the lower push rod (51), and the third connecting seat (55) is also provided with a second return spring (46) capable of pushing the sliding block (44) to return to its original position.

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