A child stroller frame

Abstract

The utility model discloses a child stroller frame, comprising a bottom support frame (1), the bottom support frame (1) being connected with a front wheel (1a) and a rear wheel (1b), the bottom support frame (1) being provided with a sliding member (2) capable of sliding forward and backward relative to the bottom support frame, the sliding member (2) being rotatably connected with a push rod assembly (3) around a first axis (A), a front support frame (4) being hinged to the push rod assembly (3) and the front side of the bottom support frame (1), the child stroller frame further comprising a seat support member (5), the rear end of the seat support member (5) being rotatably connected with the upper end of the front support frame (4) or the push rod assembly (3) around a second axis (B), a transmission assembly (6) capable of pulling the seat support member (5) toward the front support frame (4) being provided between the seat support member (5) and the front support frame (4). The utility model has a simple structure and a small volume after being folded.

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 to grow up. Currently, half of the strollers can be unfolded or folded. In the unfolded state, the stroller can be used by the child to travel, while in the folded state, the stroller can be easily carried or stored. The frame structures of the strollers currently on the market are also varied, and the folding mechanisms are different.

[0003] Therefore, the utility model provides a child stroller frame which is different from the existing designs. [Utility Model Content]

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a child stroller frame with a simple structure and a small volume after folding.

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

[0006] 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 1, to which a front wheel 1a and a rear wheel 1b are connected, and the bottom support frame 1 is provided with a sliding member 2 that can slide back and forth relative to it, and a push rod assembly 3 is rotatably connected to the sliding member 2 around a first axis A, and a front support frame 4 hinged to the push rod assembly 3 and the front side of the bottom support frame 1 is provided between the push rod assembly 3 and the bottom support frame 1, and the child stroller frame also includes a seat support member 5, and the rear end of the seat support member 5 is rotatably connected to the upper end of the front support frame 4 or the push rod assembly 3 around a second axis B, and a transmission assembly 6 that can pull the seat support member 5 toward the front support frame 4 is provided between the seat support member 5 and the front support frame 4.

[0007] The transmission assembly 6 includes a first connecting rod 61 hinged to the front end of the seat support 5 around the fourth axis D and a second connecting rod 62 hinged to the front support frame 4 around the fifth axis E, and the first connecting rod 61 and the second connecting rod 62 are hinged to each other around the third axis C.

[0008] The second connecting rod 62 includes a front rod segment 621 and a rear rod segment 622 bent relative to the front rod segment 621. The connecting position of the front rod segment 621 and the rear rod segment 622 is hinged to the front support frame 4 around the fifth axis E. The upper end of the front rod segment 621 is hinged to the first connecting rod 61 around the third axis C. A third connecting rod 63 is provided between the rear rod segment 622 and the push rod assembly 3 to hinge the two.

[0009] The push rod assembly 3 includes a push rod 31 rotatably connected to the sliding member 2, a fixed seat 32 is fixed on the push rod 31, the front support frame 4 is rotatably connected to the upper side of the fixed seat 32 around the sixth axis F near its upper end, the lower end of the front support frame 4 is rotatably connected to the bottom support frame 1 around the seventh axis G, the front end of the third connecting rod 63 is hinged to the rear rod section 622 around the eighth axis H, and the rear end of the third connecting rod 63 is hinged to the lower side of the fixed seat 32 around the ninth axis I.

[0010] The bottom support frame 1 includes two support tubes 11 spaced apart from each other, the sliding member 2 is a sliding sleeve mounted on the support tube 11, a transverse axis 7 is provided between the two sliding sleeves, and the lower end of the push rod assembly 3 is rotatably connected to the transverse axis 7 around the first axis A through a connecting seat 33.

[0011] The front support frame 4 includes a U-shaped support rod 41, the open end of the support rod 41 is rotatably connected to the support tube 11 around the seventh axis G, and a protruding protrusion seat 42 is provided in the middle of the closed end of the support rod 41. The protrusion seat 42 is hinged to the upper side of the fixed seat 32 around the sixth axis F near its upper end, and the upper end of the protrusion seat 42 is hinged to the seat support 5 around the second axis B.

[0012] There are two of each of the first connecting rod 61 , the second connecting rod 62 and the third connecting rod 63 , and the second connecting rod 62 is hinged on the support rod 41 around the fifth axis E.

[0013] The push rod 31 includes a lower push rod 311 and an upper push rod 312 that can slide and retract relative to the lower push rod 311. The fixed seat 32 is arranged on the lower push rod 311. The lower end of the lower push rod 311 is rotatably connected to the sliding member 2 around the first axis A. The upper end of the upper push rod 312 is provided with a push handle 313.

[0014] The rear end of the seat support 5 is also provided with a backrest 8 which can be rotated, unfolded or folded relative to the seat support 5 .

[0015] The backrest 8 is provided with a ceiling bracket 9 which can be rotated, unfolded or folded relative to the backrest.

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

[0017] 1. When the frame of the child stroller of the utility model is folded, the lower end of the push rod assembly and the sliding member slide forward along the bottom support frame, and the push rod assembly rotates relative to the sliding member, and the upper end of the front support frame rotates relative to the push rod assembly and the lower end rotates relative to the bottom support frame, so that the front support frame and the push rod assembly rotate and move closer to the bottom support frame. During this process, the transmission assembly also pulls the seat support member to rotate relative to the front support frame or the push rod assembly and makes the seat support member move closer to the front support frame, thereby realizing the folding of the entire child stroller frame. The entire child stroller frame has a simple structure and a small volume after folding.

[0018] 2. When the transmission assembly of the utility model pulls the seat support member toward the front support frame, the rear end of the third connecting rod rotates relative to the push rod assembly and the front end pushes the rear rod section, so that the connecting position of the rear rod section and the front rod section and the front support frame rotate. In this process, the upper end of the front rod section pulls the first connecting rod, and the upper end of the first connecting rod rotates relative to the front end of the seat support member and pulls the seat support member toward the front support frame. Therefore, when the lower end of the push rod assembly rotates relative to the sliding member and slides forward, the front support frame and the seat support member can be brought together to the bottom support frame. The folding operation is convenient and quick, and the volume is small after folding, which is easy to store and carry.

Brief Description of the Drawings

[0019] Figure 1 It is a stereogram of Embodiment 1 of the utility model;

[0020] Figure 2 This is a side view of the expanded state of Embodiment 1 of the utility model;

[0021] Figure 3 is a side view of the embodiment 1 of the utility model during the folding process;

[0022] Figure 4 is a cross-sectional view of the folding process of the first embodiment of the utility model;

[0023] Figure 5 This is a side view of the folded state of the first embodiment of the utility model;

[0024] Figure 6 It is a side view of embodiment 2 of the utility model;

[0025] Figure 7 It is a side view of embodiment 2 of the present utility model. [Specific implementation method]

[0026] The utility model is further described below in conjunction with the accompanying drawings:

[0027] Embodiment 1:

[0028] like Figures 1 to 5As shown, a child stroller frame can be moved from an unfolded position to a folded position after a locking device is unlocked, comprising a bottom support frame 1, to which a front wheel 1a and a rear wheel 1b are connected, and the bottom support frame 1 is provided with a sliding member 2 that can slide back and forth relative to the bottom support frame, and a push rod assembly 3 is rotatably connected to the sliding member 2 around a first axis A, and a front support frame 4 hinged to the push rod assembly 3 and the front side of the bottom support frame 1 is provided between the push rod assembly 3 and the bottom support frame 1, and the child stroller frame also includes a seat support member 5, a rear end of the seat support member 5 is rotatably connected to the upper end of the front support frame 4 around a second axis B, and a transmission assembly 6 that can pull the seat support member 5 toward the front support frame 4 is provided between the seat support member 5 and the front support frame 4. When the child stroller frame is folded, the lower end of the push rod assembly 3 and the sliding member 2 slide forward along the bottom support frame 1, and the push rod assembly 3 rotates relative to the sliding member 2, and the upper end of the front support frame 4 rotates relative to the push rod assembly 3 and the lower end rotates relative to the bottom support frame 1, so that the front support frame 4 and the push rod assembly 3 rotate and approach the bottom support frame 1. In this process, the transmission assembly 6 pulls the seat support member 5 to rotate relative to the front support frame 4 and makes the seat support member 5 approach the front support frame 4, thereby realizing the folding of the entire child stroller frame. The entire child stroller frame has a simple structure and a small volume after folding. Of course, the rear end of the seat support member 5 can also be hinged on the push rod assembly 3 around the second axis B. In this embodiment, the locking device can adopt the locking mechanism generally used in traditional child strollers, such as a structure in which a latch or a latch groove is set between two components having a mutual rotation relationship, which will not be repeated here.

[0029] like Figures 1 to 5As shown, the transmission assembly 6 includes a first connecting rod 61 hinged to the front end of the seat support 5 around the fourth axis D and a second connecting rod 62 hinged to the front support frame 4 around the fifth axis E, and the first connecting rod 61 and the second connecting rod 62 are hinged to each other around the third axis C, the second connecting rod 62 includes a front rod segment 621 and a rear rod segment 622 bent relative to the front rod segment 621, the connecting position of the front rod segment 621 and the rear rod segment 622 is hinged to the front support frame 4 around the fifth axis E, the upper end of the front rod segment 621 is hinged to the first connecting rod 61 around the third axis C, and a third connecting rod 63 is provided between the rear rod segment 622 and the push rod assembly 3 to which the two are hinged. When the transmission assembly 6 pulls the seat support 5 toward the front support frame 4, the rear end of the third connecting rod 63 rotates relative to the push rod assembly 3 and the front end pushes the rear rod segment 622, so that the connecting position of the rear rod segment 622 and the front rod segment 621 and the front support frame 4 rotate. During this process, the upper end of the front rod segment 621 pulls the first connecting rod 61, and the upper end of the first connecting rod 61 rotates relative to the front end of the seat support 5 and pulls the seat support 5 closer to the front support frame 4. Therefore, when the lower end of the push rod assembly 3 rotates relative to the sliding member 2 and slides forward, the front support frame 4 and the seat support 5 can be brought together to the bottom support frame 1. The folding operation is convenient and quick, and the volume is small after folding, which is easy to store and carry.

[0030] like Figures 1 to 5 As shown, the push rod assembly 3 includes a push rod 31 rotatably connected to the sliding member 2, a fixed seat 32 is fixed on the push rod 31, the front support frame 4 is rotatably connected to the upper side of the fixed seat 32 around the sixth axis F near its upper end, the lower end of the front support frame 4 is rotatably connected to the bottom support frame 1 around the seventh axis G, the front end of the third connecting rod 63 is hinged to the rear rod section 622 around the eighth axis H, and the rear end of the third connecting rod 63 is hinged to the lower side of the fixed seat 32 around the ninth axis I.

[0031] like Figure 1 As shown, the bottom support frame 1 includes two support tubes 11 spaced apart from each other, so that the child stroller frame has sufficient supporting strength, the sliding member 2 is a sliding sleeve mounted on the support tube 11, a transverse axis 7 is provided between the two sliding sleeves, and the lower end of the push rod assembly 3 is rotatably connected to the transverse axis 7 around the first axis A through a connecting seat 33.

[0032] like Figure 1As shown, the front support frame 4 includes a U-shaped support rod 41, the open end of the support rod 41 is rotatably connected to the support tube 11 around the seventh axis G, a protruding protrusion seat 42 is provided in the middle of the closed end of the support rod 41, the protrusion seat 42 is hinged on the upper side of the fixed seat 32 around the sixth axis F near its upper end, the upper end of the protrusion seat 42 is hinged to the seat support 5 around the second axis B, the first connecting rod 61, the second connecting rod 62 and the third connecting rod 63 are each provided with two, and the second connecting rod 62 is hinged to the support rod 41 around the fifth axis E. Therefore, the entire child stroller frame has sufficient stability and strength in the unfolded state, and can be folded flexibly when needed, and has a small volume after folding, which is convenient for storage or carrying.

[0033] like Figures 1 to 5 As shown, the push rod 31 includes a lower push rod 311 and an upper push rod 312 that can slide and retract relative to the lower push rod 311. The fixing seat 32 is arranged on the lower push rod 311. The lower end of the lower push rod 311 is rotatably connected to the sliding member 2 around the first axis A. The upper end of the upper push rod 312 is provided with a push handle 313. When the child stroller frame is folded, the upper push rod 312 is first retracted into the lower push rod 211. Of course, the upper push rod 312 can also be rotatably connected to the lower push rod 311. When the child stroller frame is folded, the upper push rod 312 is first rotated relative to the lower push rod 311 and folded together.

[0034] Embodiment 2:

[0035] like Figure 6 and Figure 7 As shown, the difference between Example 2 and Example 1 is:

[0036] The rear end of the seat support 5 is also provided with a backrest 8 that can be rotated, unfolded or folded relative to it, and the backrest 8 is provided with a ceiling bracket 9 that can be rotated, unfolded or folded relative to it. A cloth cover can be connected to the backrest 8 to support the child's back, making the child more comfortable to sit, and a tarpaulin can be connected to the ceiling bracket 9 to block the sun and wind.

[0037] 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 (1), the bottom support frame (1) is connected with a front wheel (1a) and a rear wheel (1b), the bottom support frame (1) is provided with a sliding member (2) which can slide forward and backward relative to the bottom support frame, the sliding member (2) is rotatably connected with a push rod assembly (3) around a first axis (A), a front support frame (4) hinged to the push rod assembly (3) and the front side of the bottom support frame (1) is provided between the push rod assembly (3) and the bottom support frame (1), the frame of the child stroller also comprises a seat support member (5), the rear end of the seat support member (5) is rotatably connected with the upper end of the front support frame (4) or the push rod assembly (3) around a second axis (B), and a transmission assembly (6) which can pull the seat support member (5) towards the front support frame (4) is provided between the seat support member (5) and the front support frame (4).

2. The child stroller frame according to claim 1, characterized in that: The transmission assembly (6) comprises a first connecting rod (61) hinged to the front end of the seat support (5) around a fourth axis (D) and a second connecting rod (62) hinged to the front support frame (4) around a fifth axis (E), and the first connecting rod (61) and the second connecting rod (62) are hinged to each other around a third axis (C).

3. The child stroller frame according to claim 2, characterized in that: The second connecting rod (62) includes a front rod section (621) and a rear rod section (622) bent relative to the front rod section (621); the connection position between the front rod section (621) and the rear rod section (622) is hinged to the front support frame (4) around the fifth axis (E); the upper end of the front rod section (621) is hinged to the first connecting rod (61) around the third axis (C); and a third connecting rod (63) is provided between the rear rod section (622) and the push rod assembly (3) to be hinged to the two.

4. The child stroller frame according to claim 3, characterized in that: The push rod assembly (3) includes a push rod (31) rotatably connected to the sliding member (2), a fixed seat (32) is fixed on the push rod (31), the front support frame (4) is rotatably connected to the upper side of the fixed seat (32) around a sixth axis (F) near its upper end, the lower end of the front support frame (4) is rotatably connected to the bottom support frame (1) around a seventh axis (G), the front end of the third connecting rod (63) is hinged to the rear rod section (622) around an eighth axis (H), and the rear end of the third connecting rod (63) is hinged to the lower side of the fixed seat (32) around a ninth axis (I).

5. The child stroller frame according to claim 4, characterized in that: The bottom support frame (1) comprises two support tubes (11) spaced apart from each other, the sliding member (2) is a sliding sleeve mounted on the support tube (11), a transverse axis (7) is arranged between the two sliding sleeves, and the lower end of the push rod assembly (3) is rotatably connected to the transverse axis (7) around the first axis (A) via a connecting seat (33).

6. The child stroller frame according to claim 5, characterized in that: The front support frame (4) comprises a U-shaped support rod (41), the open end of the support rod (41) is rotatably connected to the support tube (11) around the seventh axis (G), a protruding protrusion seat (42) is provided in the middle of the closed end of the support rod (41), the protrusion seat (42) is hinged to the upper side of the fixed seat (32) around the sixth axis (F) on and near its upper end, and the upper end of the protrusion seat (42) is hinged to the seat support (5) around the second axis (B).

7. The child stroller frame according to claim 6, characterized in that: There are two of each of the first connecting rod (61), the second connecting rod (62) and the third connecting rod (63), and the second connecting rod (62) is hinged on the supporting rod (41) around the fifth axis (E).

8. The child stroller frame according to claim 4, characterized in that: The push rod (31) comprises a lower push rod (311) and an upper push rod (312) which can slide and retract relative to the lower push rod (311). The fixed seat (32) is arranged on the lower push rod (311). The lower end of the lower push rod (311) is rotatably connected to the sliding member (2) around the first axis (A). The upper end of the upper push rod (312) is provided with a push handle (313).

9. The child stroller frame according to claim 1, characterized in that: The rear end of the seat support (5) is also provided with a backrest (8) which can be rotated relative to the seat support (5) to be unfolded or folded.

10. The child stroller frame according to claim 9, characterized in that: The backrest (8) is provided with a ceiling bracket (9) which can be rotated relative to the backrest to be unfolded or folded.

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