A child's pushchair

Abstract

The application discloses a child stroller, a bottom support frame comprising a front frame assembly and a rear frame assembly, the front frame assembly and the rear frame assembly being rotatably connected around a first axis A, the bottom support frame further being rotatably connected with a push rod assembly around a second axis B, a transmission rod being arranged between the push rod assembly and the front frame assembly, one end of the transmission rod being hingedly connected to the front frame assembly and the other end being hingedly connected to the push rod assembly, the child stroller further comprising a seat support, the seat support being provided with a connecting portion, the connecting portion being rotatably connected with the front frame assembly around a third axis C, a linkage being further arranged between the seat support, the front frame assembly and the push rod assembly, the linkage comprising a linkage rod, a front connecting rod being arranged between the linkage rod and the seat support, and a rear connecting rod being arranged between the linkage rod and the push rod assembly, a pedal assembly comprising a pedal and a support seat, the support seat being provided with a locking portion, and the front frame assembly being provided with a plurality of locking grooves. The application is convenient to fold and has a small volume after being folded.

Description

Technical Field

[0001] This invention relates to a children's stroller. Background Technology

[0002] Strollers are a common product used during the growth of infants and toddlers. Most strollers on the market can be unfolded or folded; when unfolded, they are for infants and toddlers to sit in, and when folded, they are easy to carry or store. There are various folding methods and structures available for strollers on the market.

[0003] This invention provides a novel children's stroller that differs from the current stroller structures on the market. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a children's stroller that is simple in structure, easy to fold, and small in size after folding.

[0005] This invention is achieved through the following technical solution:

[0006] A stroller for children, which can be moved from an unfolded position to a folded position after the locking device is unlocked, is characterized by: a bottom support frame 1, the bottom support frame 1 including a front frame assembly 11 with front wheels 11a and a rear frame assembly 12 with rear wheels 12a, the front frame assembly 11 and the rear frame assembly 12 being rotatably connected about a first axis A; a push rod assembly 2 is also rotatably connected to the bottom support frame 1 about a second axis B; a transmission component 3 is provided between the push rod assembly 2 and the front frame assembly 11, which can pull the front frame assembly 11 towards the rear frame assembly 12 when the push rod assembly 2 rotates and moves closer to the rear frame assembly 12; the transmission component 3 is a transmission rod, one end of which is hinged to the front frame assembly 11 and the other end of which is hinged to the push rod assembly 2; the stroller also includes a seat support 4, the seat support 4 having a connecting part 41, the connecting part 41 being connected to the front frame assembly 11 about a second axis B. The three axes C are rotatably connected. The seat support 4, the front frame assembly 11 and the push rod assembly 2 are also provided with a linkage 5 that can pull the seat support 4 to rotate towards the front frame assembly 11 when the push rod assembly 2 rotates towards the rear frame assembly 12. The linkage includes a linkage rod 51 that is hinged to the front frame assembly 11 around the fourth axis D in the middle. The front end of the linkage rod 51 is provided with a front connecting rod 52 that is hinged to the seat support 4. The rear end of the linkage rod 51 is provided with a rear connecting rod 53 that is hinged to the push rod assembly 2. The front frame assembly 11 is connected with a foot pedal assembly 13 for supporting the feet. The foot pedal assembly 13 includes a pedal 131 and a support seat 132 located on the lower side of the pedal 131. The support seat 132 is provided with a locking part 133 that can slide relative to it. The front frame assembly 11 is provided with a plurality of locking grooves 14 along its length that can engage with the locking part 133.

[0007] The front frame assembly 11 includes a front leg 111 and a front connecting seat 112 disposed on the upper end of the front leg 111. The rear frame assembly 12 includes a rear leg 121 and a rear connecting seat 122 disposed on the rear leg 121. The push rod assembly 2 includes a push rod 21 and a push rod seat 22 disposed on the lower end of the push rod 21. The front connecting seat 112 is rotatably connected to the rear connecting seat 122 about a first axis A, and the push rod seat 22 is rotatably connected about a second axis B. The connecting part 41 is rotatably connected to the rear connecting seat 122. The connecting part 41 is hinged to the front connecting seat 112 around the third axis C. The linkage rod 51 is hinged to the front connecting seat 112 around the fourth axis D. One end of the front connecting rod 52 is hinged to the seat support 4 around the fifth axis E, and the other end is hinged to the linkage rod 51 around the sixth axis F. One end of the rear connecting rod 53 is hinged to the linkage rod 51 around the seventh axis G, and the other end is hinged to the push rod seat 22 around the eighth axis H and offset from the second axis B.

[0008] The front connecting seat 112 is provided with a first arc-shaped hole 113 and a second arc-shaped hole 114. The linkage rod 51 and the front connecting rod 52 are hinged to each other around the sixth axis F through the front connecting shaft 54. The front connecting shaft 54 ​​passes through the first arc-shaped hole 113 and can move within the first arc-shaped hole 113. The rear connecting rod 53 and the linkage rod 51 are hinged to each other around the seventh axis G through the rear connecting shaft 55. The rear connecting shaft 55 passes through the second arc-shaped hole 114 and can move within the second arc-shaped hole 114.

[0009] The linkage rod is shaped like the number "7".

[0010] One end of the transmission rod is hinged to the front connecting seat 112 around the ninth axis I, and the other end is hinged to the push rod seat 22 around the tenth axis J and offset from the second axis B.

[0011] The push rod 21 includes a lower push rod 211 connected to the push rod seat 22 and an upper push rod 212 that can extend and retract within the lower push rod 211. The locking device includes a locking groove 61 provided on the rear connecting seat 122. The push rod seat 22 is provided with a sliding block 62 that can slide within it. The sliding block 62 is provided with a locking pin 63 that can engage or disengage with the locking groove 61. The rear connecting seat 122 is also provided with an arc-shaped groove 64 that communicates with the locking groove 61 and allows the locking pin 63 to move within it when the push rod assembly 2 rotates and approaches relative to the rear frame assembly 12. The lower push rod 211 is provided with a driving block 65 that can slide within it and push the sliding block 62 to slide. A return spring 66 that can push the sliding block 62 to reset is also provided between the push rod seat 22 and the sliding block 62. The lower end of the upper push rod 212 is provided with a pushing part 67 that can push the driving block 65 to slide when it slides relative to the lower push rod 211.

[0012] The seat support 4 is also connected to a seat assembly 7 that can be unfolded or folded.

[0013] The seat assembly 7 is rotatably connected to the seat support 4 and can rotate relative to the seat support 4. The seat support 4 has a plurality of protruding parts 42 spaced along the circumferential direction on its outer side. The upper end of the protruding part 42 extends laterally outward to form an extension part 43. The seat assembly 7 includes a seat part 71. The lower side of the seat part 71 is provided with a protruding ring 72 that can be fitted onto the outer side of the protruding parts 42 and the extension part 43. The inner wall of the protruding ring 72 is provided with a hooking part 73 that can be hooked onto the extension part 43 when the seat part 71 is connected to the seat support 4.

[0014] The rear frame assembly 12 is provided with a lifting ring 8 that can rotate relative to it at its upper end.

[0015] Compared with existing technologies, the present invention has the following advantages: When folding, the locking device is first unlocked, and then the push rod assembly is rotated backward. As the push rod assembly rotates and approaches the rear frame assembly, it drives the front frame assembly to rotate and approach the rear frame assembly via a transmission component. During this process, the push rod assembly also pulls the rear connecting rod, which in turn pulls the linkage rod to rotate relative to the front frame assembly. The linkage rod, in turn, pulls the front connecting rod, which then pulls the seat support member to rotate relative to the front frame assembly and approach it. Therefore, simply rotating the push rod assembly around the second axis relative to the rear frame assembly is enough to move the front frame assembly towards the rear frame assembly, and simultaneously move the seat support member towards the front frame assembly. The folding operation is very convenient and quick, and the folded size is small, making it easy to carry or store. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a side view of the present invention;

[0018] Figure 3 This is a side view during the folding process of the present invention;

[0019] Figure 4 This is one of the cross-sectional views of the present invention;

[0020] Figure 5 This is the second sectional view of the present invention;

[0021] Figure 6 This is the third sectional view of the present invention;

[0022] Figure 7 This is the fourth sectional view of the present invention;

[0023] Figure 8 This is an exploded view of the present invention;

[0024] Figure 9 This is one of the perspective views of the components of the present invention;

[0025] Figure 10 This is a second perspective view of a component of the present invention;

[0026] Figure 11 This is the third perspective view of the component of the invention;

[0027] Figure 12 This is the fourth perspective view of the component of the present invention;

[0028] Figure 13 This is a cross-sectional view of a component of the present invention;

[0029] Figure 14 yes Figure 13A magnified view of point K in the middle. Detailed Implementation

[0030] The present invention will now be further described with reference to the accompanying drawings:

[0031] like Figures 1 to 10As shown, a stroller, which can be moved from an unfolded position to a folded position after the locking device is unlocked, includes a bottom support frame 1. The bottom support frame 1 includes a front frame assembly 11 with front wheels 11a and a rear frame assembly 12 with rear wheels 12a. The front frame assembly 11 and the rear frame assembly 12 are rotatably connected about a first axis A. A push rod assembly 2 is also rotatably connected to the bottom support frame 1 about a second axis B. A transmission component 3 is provided between the push rod assembly 2 and the front frame assembly 11, which can pull the front frame assembly 11 towards the rear frame assembly 12 when the push rod assembly 2 rotates and moves closer to the rear frame assembly 12. The transmission component 3 is a transmission rod, one end of which is hinged to the front frame assembly 11 and the other end of which is hinged to the push rod assembly 2. The stroller also includes a seat support 4, which has a connecting part 41. The connecting part 41 is connected to the front frame assembly 11 about a third axis. Line C is rotatably connected. The seat support 4, the front frame assembly 11 and the push rod assembly 2 are further provided with a linkage 5 that can pull the seat support 4 to rotate towards the front frame assembly 11 when the push rod assembly 2 rotates towards the rear frame assembly 12. The linkage includes a linkage rod 51 that is hinged to the front frame assembly 11 around the fourth axis D in the middle. The front end of the linkage rod 51 is provided with a front connecting rod 52 that is hinged to the seat support 4. The rear end of the linkage rod 51 is provided with a rear connecting rod 53 that is hinged to the push rod assembly 2. The front frame assembly 11 is connected with a foot pedal assembly 13 for supporting the feet. The foot pedal assembly 13 includes a pedal 131 and a support seat 132 located on the lower side of the pedal 131. The support seat 132 is provided with a locking part 133 that can slide relative to it. The front frame assembly 11 is provided with a plurality of locking grooves 14 along its length that can engage with the locking part 133. When folding, first unlock the locking device, then rotate the push rod assembly 2 backward. When the push rod assembly 2 rotates and approaches the rear frame assembly 12 around the second axis B, it drives the front frame assembly 11 to rotate and approach the rear frame assembly 12 around the first axis A through the transmission component 3. During this process, the push rod assembly 2 also pulls the rear link 53, which rotates relative to the push rod assembly 2. The rear link 53 pulls the linkage rod 51 to rotate relative to the front frame assembly 11. During the rotation of the linkage rod 51 relative to the front frame assembly 11, it pulls the front link 52 to rotate relative to it. The front link 52 then pulls the front side of the seat support 4 and causes the seat support 4 to rotate relative to the front frame assembly 11 around the third axis C and approach the front frame assembly 11. Therefore, the push rod assembly 2 only needs to rotate around the second axis B relative to the rear frame assembly 12 to move the front frame assembly 11 closer to the rear frame assembly 12, and at the same time move the seat support 4 closer to the front frame assembly 11. The folding operation is very convenient and quick, and the folded size is small, making it easy to carry or store.In addition, by engaging the locking part 133 with different locking slots 14, the height position of the pedal assembly 13 can be adjusted to accommodate children of different heights, making the ride more comfortable for children.

[0032] like Figures 4 to 8 As shown, the front frame assembly 11 includes a front leg 111 and a front connecting seat 112 disposed on the upper end of the front leg 111; the rear frame assembly 12 includes a rear leg 121 and a rear connecting seat 122 disposed on the rear leg 121; the push rod assembly 2 includes a push rod 21 and a push rod seat 22 disposed on the lower end of the push rod 21; the front connecting seat 112 is rotatably connected to the rear connecting seat 122 about a first axis A; and the push rod seat 22 is rotatably connected to the rear connecting seat 122 about a second axis B. The connecting part 41 is rotatably connected to the rear connecting seat 122. The connecting part 41 is hinged to the front connecting seat 112 around the third axis C. The linkage rod 51 is hinged to the front connecting seat 112 around the fourth axis D. One end of the front connecting rod 52 is hinged to the seat support 4 around the fifth axis E, and the other end is hinged to the linkage rod 51 around the sixth axis F. One end of the rear connecting rod 53 is hinged to the linkage rod 51 around the seventh axis G, and the other end is hinged to the push rod seat 22 around the eighth axis H and offset from the second axis B. When the push rod seat 22 rotates relative to the rear connecting seat 122 around the second axis B, the push rod seat 22 pulls the rear connecting rod 53. The rear connecting rod 53 then rotates relative to the push rod seat 22 around the eighth axis H. The front end of the rear connecting rod 53 rotates relative to the linkage rod 51 around the seventh axis G and pulls the linkage rod 51 to rotate relative to the front connecting seat 112 around the fourth axis D. During the rotation, the linkage rod 51 pulls the front connecting rod 52, causing the front connecting rod 52 and the linkage rod 51 to rotate relative to each other around the sixth axis F. The front connecting rod 52 also rotates relative to the seat support 4 around the fifth axis E and pulls the front side of the seat support 4. As a result, the seat support 4 rotates relative to the front connecting seat 112 around the third axis C and moves closer to the front frame assembly 11. The design is ingenious and the folding is flexible.

[0033] like Figures 5 to 7As shown, the front connecting seat 112 is provided with a first arc-shaped hole 113 and a second arc-shaped hole 114. The linkage rod 51 and the front connecting rod 52 are hinged to each other around the sixth axis F through the front connecting shaft 54. The front connecting shaft 54 ​​passes through the first arc-shaped hole 113 and can move within the first arc-shaped hole 113. The rear connecting rod 53 and the linkage rod 51 are hinged to each other around the seventh axis G through the rear connecting shaft 55. The rear connecting shaft 55 passes through the second arc-shaped hole 114 and can move within the second arc-shaped hole 114. When the push rod assembly 2 rotates and approaches the rear frame assembly 12 around the second axis, the push rod seat 22 pulls the rear end of the rear link 53, which in turn pulls the linkage rod 51 to rotate relative to the front connecting seat 112. The rear connecting shaft 55 between the rear link 53 and the linkage rod 51 moves within the second arc-shaped hole 114. At the same time, the linkage rod 51 pulls the front link 52, and the front connecting shaft 54 ​​between the linkage rod 51 and the front link 52 moves within the first arc-shaped hole 113. By setting the first arc-shaped hole 113 and the second arc-shaped hole 114, the movement trajectory of the front link 52 and the rear link 53 can be controlled, so that the seat support 4 can smoothly rotate and approach the front frame assembly 11, making folding flexible and smooth.

[0034] like Figure 4 , Figure 6 and Figure 8 As shown, the linkage rod is shaped like a "7", which makes the stroller structure compact and ensures that it can be folded and closed flexibly.

[0035] like Figure 4 and Figure 7 As shown, one end of the transmission rod is hinged to the front connecting seat 112 around the ninth axis I, and the other end is hinged to the push rod seat 22 around the tenth axis J, offset from the second axis B. Therefore, when the push rod assembly 2 rotates closer to the rear frame assembly 12, the push rod seat 22 can pull the front frame assembly 11 towards the rear frame assembly 12 via the transmission rod. The transmission structure is simple and compact, and the closing and retraction are flexible.

[0036] like Figure 5 and Figure 8As shown, the push rod 21 includes a lower push rod 211 connected to the push rod seat 22 and an upper push rod 212 that can extend and retract within the lower push rod 211. The locking device includes a locking groove 61 provided on the rear connecting seat 122. The push rod seat 22 is provided with a sliding block 62 that can slide within it. The sliding block 62 is provided with a locking pin 63 that can engage or disengage with the locking groove 61. The rear connecting seat 122 is also provided with an arc-shaped groove 64 that communicates with the locking groove 61 and allows the locking pin 63 to move within it when the push rod assembly 2 rotates and approaches relative to the rear frame assembly 12. The lower push rod 211 is provided with a driving block 65 that can slide within it and push the sliding block 62 to slide. A return spring 66 that can push the sliding block 62 to reset is also provided between the push rod seat 22 and the sliding block 62. The lower end of the upper push rod 212 is provided with a pushing part 67 that can push the driving block 65 to slide when it slides relative to the lower push rod 211. When the stroller needs to be folded, pushing the upper push rod 212 downwards causes the pusher 67 to push the drive block 65 to slide, which in turn pushes the sliding block 62 to slide. The locking pin 63 on the sliding block 62 then disengages from the locking groove 61 and enters the arc-shaped groove 64. At this point, the push rod assembly 2 can rotate relative to the rear frame assembly 12, thereby enabling the front frame assembly 11 and seat support 4 to rotate and fold. The unlocking operation is also very convenient and quick. The drive block 65 and the sliding block 62 have mutually abutting inclined surfaces; therefore, when the drive block 65 slides downwards, it pushes the sliding block 62 to slide relative to the push rod seat 22, thus unlocking the stroller.

[0037] like Figure 2 , 4 12, 13 and Figure 14 As shown, the seat support 4 is also connected to a seat assembly 7 that can be unfolded or folded. The seat assembly 7 is rotatably connected to the seat support 4 and can rotate relative to the seat support 4. The outer side of the seat support 4 is provided with a plurality of protruding parts 42 spaced apart along the circumferential direction. The upper end of each protruding part 42 extends laterally outward to form an extension part 43. The seat assembly 7 includes a seat part 71. The lower side of the seat part 71 is provided with a protruding ring 72 that can be fitted onto the outer side of the protruding parts 42 and the extension part 43. The inner wall of the protruding ring 72 is provided with a hooking part 73 that can engage with the extension part 43 when the seat part 71 is connected to the seat support 4. Through the engagement of the hooking part 73 and the extension part 43, the seat assembly 7 can rotate smoothly during the reversal process.

[0038] like Figure 2 and Figure 8As shown, the rear frame assembly 12 has a lifting ring 8 that can rotate relative to it at its upper end. When the locking device is unlocked, the push rod assembly 2 is rotated backward, and then the lifting ring 8 is lifted upward, which allows the front frame assembly 11 to move closer to the rear frame assembly 12, and the seat support 4 to move closer to the front frame assembly 11. In this embodiment, the seat assembly 7 is a foldable seat assembly. When folding the stroller, the seat assembly is folded first, and then the locking device is unlocked and the push rod assembly 2 is rotated.

Claims

1. A stroller that can be moved from an unfolded position to a folded position after the locking device is unlocked, characterized in that: The system includes a bottom support frame (1), which comprises a front frame assembly (11) with a front wheel (11a) and a rear frame assembly (12) with a rear wheel (12a). The front frame assembly (11) and the rear frame assembly (12) are rotatably connected about a first axis (A). A push rod assembly (2) is also rotatably connected about a second axis (B) on the bottom support frame (1). A transmission component (3) is provided between the push rod assembly (2) and the front frame assembly (11) to pull the front frame assembly (11) towards the rear frame assembly (12) when the push rod assembly (2) rotates and moves closer to the rear frame assembly (12). Component (3) is a transmission rod, one end of which is hinged to the front frame assembly (11), and the other end is hinged to the push rod assembly (2). The stroller also includes a seat support (4), which has a connecting part (41) that is rotatably connected to the front frame assembly (11) around a third axis (C). A linkage (5) is also provided between the seat support (4), the front frame assembly (11), and the push rod assembly (2) to pull the seat support (4) towards the front frame assembly (11) when the push rod assembly (2) rotates towards the rear frame assembly (12). The linkage includes... A linkage rod (51) is hinged to the front frame assembly (11) around the fourth axis (D). A front connecting rod (52) is hinged between the front end of the linkage rod (51) and the seat support (4), and a rear connecting rod (53) is hinged between the rear end of the linkage rod (51) and the push rod assembly (2). A foot pedal assembly (13) for supporting the feet is connected to the front frame assembly (11). The foot pedal assembly (13) includes a pedal (131) and a support seat (132) located below the pedal (131). The support seat (132) contains a locking part (133) that can slide relative to it. The frame assembly (11) has multiple locking slots (14) along its length that can engage with the locking part (133). The front frame assembly (11) includes a front leg (111) and a front connecting seat (112) located on the upper end of the front leg (111). The rear frame assembly (12) includes a rear leg (121) and a rear connecting seat (122) located on the rear leg (121). The push rod assembly (2) includes a push rod (21) and a push rod seat (22) located on the lower end of the push rod (21). The front connecting seat (112) is rotatably connected to the rear connecting seat (122) around a first axis (A). The push rod seat (22) is rotatably connected around a second axis (B). The connecting part (41) is rotatably connected to the rear connecting seat (122), and the connecting part (41) is hinged to the front connecting seat (112) about the third axis (C). The linkage rod (51) is hinged to the front connecting seat (112) about the fourth axis (D). One end of the front connecting rod (52) is hinged to the seat support (4) about the fifth axis (E).The other end is hinged to the linkage rod (51) around the sixth axis (F). One end of the rear linkage rod (53) is hinged to the linkage rod (51) around the seventh axis (G), and the other end is hinged to the push rod seat (22) around the eighth axis (H) and offset from the second axis (B). The front connecting seat (112) is provided with a first arc-shaped hole (113) and a second arc-shaped hole (114). The linkage rod (51) and the front linkage rod (52) are hinged to each other around the sixth axis (F) through the front connecting shaft (54). The front connecting shaft (54) passes through the first arc-shaped hole (113) and can move within the first arc-shaped hole (113). The rear linkage rod (53) and the linkage rod (51) are hinged to each other around the seventh axis (G) through the rear connecting shaft (55). The rear connecting shaft (55) passes through the second arc-shaped hole (114) and can move within the second arc-shaped hole (114).

2. The stroller according to claim 1, characterized in that: The linkage rod is shaped like the number "7".

3. The stroller according to claim 1, characterized in that: One end of the transmission rod is hinged to the front connecting seat (112) around the ninth axis (I), and the other end is hinged to the push rod seat (22) around the tenth axis (J) and offset from the second axis (B).

4. The stroller according to any one of claims 1 to 3, characterized in that: The push rod (21) includes a lower push rod (211) connected to the push rod seat (22) and an upper push rod (212) that can extend and retract within the lower push rod (211). The locking device includes a locking groove (61) provided on the rear connecting seat (122). The push rod seat (22) is provided with a sliding block (62) that can slide within it. The sliding block (62) is provided with a locking pin (63) that can engage or disengage with the locking groove (61). The rear connecting seat (122) is also provided with a locking pin that communicates with the locking groove (61) and is connected to the push rod assembly. When component (2) rotates and approaches relative to the rear frame assembly (12), an arc-shaped groove (64) is provided in which the locking pin (63) can move. The lower push rod (211) is provided with a drive block (65) that can slide in it and push the sliding block (62) to slide. The push rod seat (22) and the sliding block (62) are also provided with a return spring (66) that can push the sliding block (62) to reset. The lower end of the upper push rod (212) is provided with a push part (67) that can push the drive block (65) to slide when it slides relative to the lower push rod (211).

5. The stroller according to claim 1, characterized in that: The seat support (4) is also connected to a seat assembly (7) that can be unfolded or folded.

6. The stroller according to claim 5, characterized in that: The seat assembly (7) is rotatably connected to the seat support (4) and can rotate relative to the seat support (4). The seat support (4) has a plurality of protruding protrusions (42) spaced along the circumferential direction on its outer side. The upper end of the protrusions (42) extends laterally to the outside with an extension (43). The seat assembly (7) includes a seat part (71). The lower side of the seat part (71) is provided with a protruding ring (72) that can be fitted onto the outside of the protrusions (42) and the extension (43). The inner wall of the protruding ring (72) is provided with a hooking part (73) that can be hooked onto the extension (43) when the seat part (71) is connected to the seat support (4).

7. The stroller according to claim 1, characterized in that: The rear frame assembly (12) is provided with a lifting ring (8) that can rotate relative to it.

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