CN117485417A - Child cart - Google Patents

Abstract

The invention discloses a stroller, which comprises a front frame component and a rear frame component, wherein the front frame component and the rear frame component are rotatably connected around a first axis A, a push rod component is rotatably connected on the bottom frame around a second axis B, a transmission rod is arranged between the push rod component and the front frame component, one end of the transmission rod is hinged on the front frame component, the other end of the transmission rod is hinged on the push rod component, the stroller further comprises a seat support piece, a connecting part is arranged on the seat support piece, the connecting part is rotatably connected with the front frame component around a third axis C, a linkage piece is further arranged among the seat support piece, the front frame component and the push rod component, the linkage piece comprises a linkage rod, a front connecting rod is arranged between the linkage rod and the seat support piece, a rear connecting rod is arranged between the linkage rod and the push rod component, the pedal component comprises a pedal and a support seat, a clamping lock part can be arranged in the support seat, and a plurality of clamping grooves are arranged on the front frame component. The folding device is convenient to fold and operate and small in size after being folded.

Description

Child cart

[ field of technology ]

The invention relates to a child stroller.

[ background Art ]

The baby stroller is a common product in the growth process of infants. The existing children's barrows in the market can be unfolded or folded, and in an unfolded state, the children can sit on the barrow, and in a folded state, the barrow is convenient to carry or store. Folding modes and folding structures of the children's carts on the market at present are various.

The invention provides a novel child stroller which is different from the child stroller structure in the current market.

[ invention ]

The invention aims to overcome the defects of the prior art and provides the child cart which is simple in structure, convenient to fold and operate and small in volume after being folded.

The invention is realized by the following technical scheme:

the utility model provides a children's shallow, can remove to folding position from the expansion position after locking device unblock, its characterized in that: comprises a bottom supporting frame 1, the bottom supporting frame 1 comprises a front frame component 11 with a front wheel 11a and a rear frame component 12 with a rear wheel 12a, the front frame component 11 and the rear frame component 12 are rotatably connected around a first axis A, the bottom supporting frame 1 is rotatably connected with a push rod component 2 around a second axis B, a transmission piece 3 which can pull the front frame component 11 to draw the rear frame component 12 when the push rod component 2 is rotatably drawn close relative to the rear frame component 12 is arranged between the push rod component 2 and the front frame component 11, the transmission piece 3 is a transmission rod, one end of the transmission rod is hinged on the front frame component 111, the other end of the transmission rod is hinged on the push rod component 2, the baby carriage also comprises a seat supporting piece 4, the seat supporting piece 4 is provided with a connecting part 41, the connecting part 41 is rotatably connected with the front frame component 11 around a third axis C, the seat support 4, the front frame component 11 and the push rod component 2 are also provided with a linkage piece 5 which can pull the seat support 4 to rotate towards the front frame component 11 when the push rod component 2 rotates towards the rear frame component 12, the linkage piece comprises a linkage rod 51 with the middle part hinged on the front frame component 11 around a fourth axis D, a front connecting rod 52 hinged with the front end of the linkage rod 51 and the seat support 4 is arranged between the front end of the linkage rod 51 and the seat support 4, a rear connecting rod 53 hinged with the rear end of the linkage rod 51 and the push rod component 2 is arranged between the rear end of the linkage rod 51 and the push rod component 2, the front frame component 11 is connected with a pedal component 13 used for supporting feet, the pedal component 13 comprises a pedal 131 and a supporting seat 132 arranged at the lower side of the pedal 131, a locking part 133 which can slide relative to the supporting seat 132 can be arranged, the front frame assembly 11 is provided with a plurality of locking grooves 14 along the length direction thereof, which can be engaged with the locking parts 133.

The front frame assembly 11 comprises a front leg 111 and a front connecting seat 112 arranged at the upper end of the front leg 111, the rear frame assembly 12 comprises a rear leg 121 and a rear connecting seat 122 arranged on the rear leg 121, the push rod assembly 2 comprises a push rod 21 and a push rod seat 22 arranged at 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 to the rear connecting seat 122 around a second axis B, the connecting part 41 is hinged to the front connecting seat 112 around a third axis C, the linkage rod 51 is hinged to the front connecting seat 112 around a fourth axis D, one end of the front connecting rod 52 is hinged to the seat support 4 around a fifth axis E, the other end of the front connecting rod 52 is hinged to the linkage rod 51 around a sixth axis F, one end of the rear connecting rod 53 is hinged to the linkage rod 51 around a seventh axis G, and the other end of the rear connecting rod 53 is hinged to the push rod seat 22 around an eighth axis H and is deviated from the position of the second axis B.

The front connecting seat 112 is provided with a first arc hole 113 and a second arc hole 114, the linkage rod 51 and the front connecting rod 52 are mutually hinged around a sixth axis F through the front connecting shaft 54, the front connecting shaft 54 is arranged in the first arc hole 113 in a penetrating mode and can move in the first arc hole 113, the rear connecting rod 53 and the linkage rod 51 are mutually hinged around a seventh axis G through the rear connecting shaft 55, and the rear connecting shaft 55 is arranged in the second arc hole 114 in a penetrating mode and can move in the second arc hole 114.

The linkage rod is 7-shaped.

The transmission rod is hinged at one end to the front connecting seat 112 about a ninth axis I and at the other end to the push rod seat 22 about a tenth axis J and offset from the second axis B.

The push rod 21 comprises a lower push rod 211 connected with the push rod seat 22 and an upper push rod 212 capable of extending and contracting in the lower push rod 211, the locking device comprises a locking groove 61 arranged on the rear connecting seat 122, a sliding block 62 capable of sliding in the locking groove is arranged in the push rod seat 22, a locking pin 63 capable of being clamped with or separated from the locking groove 61 is arranged on the sliding block 62, an arc-shaped groove 64 which is communicated with the locking groove 61 and can be used for enabling the locking pin 63 to move in when the push rod assembly 2 rotates close relative to the rear frame assembly 12 is arranged on the rear connecting seat 122, a driving block 65 capable of sliding in the lower push rod 211 to push the sliding block 62 to slide is arranged in the lower push rod 211, a reset spring 66 capable of pushing the sliding block 62 to reset is arranged between the push rod seat 22 and the sliding block 62, and a pushing part 67 capable of pushing the driving block 65 to slide relative to the lower push rod 211 is arranged at the lower end of the upper push rod 212.

The seat support 4 is also connected to a seat assembly 7 which can be unfolded or folded.

The seat assembly 7 is rotatably connected with the seat support 4 to rotate and reverse relative to the seat support 4, a plurality of protruding parts 42 are arranged on the outer side of the seat support 4 at intervals along the circumferential direction, an extending part 43 transversely extends outwards from the upper end of the protruding part 42, the seat assembly 7 comprises a seat part 71, a protruding ring 72 capable of being sleeved on the outer sides of the protruding part 42 and the extending part 43 is arranged on the lower side of the seat part 71, and a hanging part 73 capable of being hung with the extending part 43 when the seat part 71 is connected with the seat support 4 is arranged on the inner wall of the protruding ring 72.

The upper end of the rear frame component 12 is provided with a lifting ring 8 which can rotate relative to the rear frame component.

Compared with the prior art, the invention has the following advantages: when the folding bicycle is folded, the locking device is unlocked firstly, then the push rod assembly is rotated backwards, the push rod assembly drives the front frame assembly to rotate towards the rear frame assembly through the transmission part when the push rod assembly rotates towards the rear frame assembly, in the process, the push rod assembly also pulls the rear connecting rod, the rear connecting rod pulls the linkage rod to rotate relative to the front frame assembly, the linkage rod pulls the front connecting rod in the process of rotating relative to the front frame assembly, and the front connecting rod pulls the seat support to rotate relative to the front frame assembly to be towards the front frame assembly. Therefore, only the push rod assembly rotates and approaches the rear frame assembly around the second axis relatively, the front frame assembly can be driven to approach the rear frame assembly, and meanwhile, the seat supporting piece is driven to approach the front frame assembly, so that the folding operation is very convenient and quick, and the folding device is small in size and convenient to carry or store.

[ description of the drawings ]

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a side view of the present invention during folding;

FIG. 4 is one of the cross-sectional views of the present invention;

FIG. 5 is a second cross-sectional view of the present invention;

FIG. 6 is a third cross-sectional view of the present invention;

FIG. 7 is a fourth cross-sectional view of the present invention;

FIG. 8 is an exploded view of the present invention;

FIG. 9 is one of the perspective views of the components of the present invention;

FIG. 10 is a second perspective view of the component of the present invention;

FIG. 11 is a third perspective view of the components of the invention;

FIG. 12 is a fourth perspective view of the components of the present invention;

FIG. 13 is a cross-sectional view of a component of the present invention;

fig. 14 is an enlarged view at K in fig. 13.

[ detailed description ] of the invention

The invention is further described below with reference to the accompanying drawings:

as shown in fig. 1 to 10, the stroller comprises a bottom support frame 1, the bottom support frame 1 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 around a first axis a, the bottom support frame 1 is rotatably connected with a push rod assembly 2 around a second axis B, a transmission member 3 capable of pulling the front frame assembly 11 towards the rear frame assembly 12 when the push rod assembly 2 is rotatably closed relative to the rear frame assembly 12 is arranged between the push rod assembly 2 and the front frame assembly 11, the transmission member 3 is a transmission rod, one end of the transmission rod is hinged on the front frame assembly 111, the other end of the transmission rod is hinged on the push rod assembly 2, the stroller further comprises a seat support member 4, the seat support 4 is provided with a connecting part 41, the connecting part 41 is rotatably connected with the front frame component 11 around a third axis C, a linkage piece 5 which can pull the seat support 4 to rotate towards the front frame component 11 when the push rod component 2 rotates towards the rear frame component 12 is arranged between the seat support 4, the front frame component 11 and the push rod component 2, the linkage piece comprises a linkage rod 51 with the middle part hinged on the front frame component 11 around a fourth axis D, a front connecting rod 52 hinged with the front end of the linkage rod 51 and the seat support 4 is arranged between the front end of the linkage rod 51 and the seat support 4, a rear connecting rod 53 hinged with the rear end of the linkage rod 51 and the push rod component 2 is arranged between the rear end of the linkage rod and the push rod component 2, the front frame component 11 is connected with a pedal component 13 for supporting feet, the pedal component 13 comprises a pedal 131 and a supporting seat 132 arranged at the lower side of the pedal 131, the supporting seat 132 can be provided with a locking part 133 which can slide relative to the supporting seat, and the front frame assembly 11 is provided with a plurality of locking grooves 14 which can be locked with the locking part 133 along the length direction. When folding, the locking device is unlocked firstly, then the push rod assembly 2 is rotated backwards, when the push rod assembly 2 is rotated and closed relative to the rear frame assembly 12 around the second axis B, the front frame assembly 11 is driven to rotate and close relative to the rear frame assembly 12 around the first axis A through the transmission piece 3, in the process, the push rod assembly 2 also pulls the rear connecting rod 53, the rear connecting rod 53 is rotated relative to the push rod assembly 2, the rear connecting rod 53 pulls the linkage rod 51 to rotate relative to the front frame assembly 11, the linkage rod 51 pulls the front connecting rod 52 to rotate relative to the front frame assembly 11 in the process of rotating relative to the front frame assembly 11, and the front connecting rod 52 pulls the front side of the seat support 4 and enables the seat support 4 to rotate relative to the front frame assembly 11 around the third axis C so as to be closed to the front frame assembly 11. Therefore, only the push rod assembly 2 rotates around the second axis B relative to the rear frame assembly 12 to draw the front frame assembly 11 to draw the rear frame assembly 12, and simultaneously drives the seat support 4 to draw the front frame assembly 11, so that the folding operation is very convenient and quick, and the folding device is small in size and convenient to carry or store. In addition, the height position of the pedal assembly 13 can be adjusted by the clamping and locking parts 133 clamping and locking grooves 14, so that children with different heights can be accommodated, and the children can sit more comfortably.

As shown in fig. 4 to 8, the front frame assembly 11 includes a front leg 111 and a front connecting seat 112 provided at an upper end of the front leg 111, the rear frame assembly 12 includes a rear leg 121 and a rear connecting seat 122 provided on the rear leg 121, the push rod assembly 2 includes a push rod 21 and a push rod seat 22 provided at a 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, the push rod seat 22 is rotatably connected to the rear connecting seat 122 about a second axis B, the connecting portion 41 is hinged to the front connecting seat 112 about a third axis C, the link rod 51 is hinged to the front connecting seat 112 about a fourth axis D, one end of the front link rod 52 is hinged to the seat support 4 about a fifth axis E, the other end of the front link rod 52 is hinged to the link rod 51 about a sixth axis F, one end of the rear link rod 53 is hinged to the link rod 51 about a seventh axis G, and the other end is hinged to the push rod seat 22 about an eighth axis H and is offset from the position of the second axis B. When the push rod seat 22 rotates around the second axis B relative to the rear connecting seat 122, the push rod seat 22 pulls the rear connecting rod 53, the rear connecting rod 53 rotates around the eighth axis H relative to the push rod seat 22, the front end of the rear connecting rod 53 rotates around the seventh axis G relative to the linkage rod 51 and pulls the linkage rod 51 to rotate around the fourth axis D relative to the front connecting seat 112, the linkage rod 51 pulls the front connecting rod 52 again during rotation, so that the front connecting rod 52 and the linkage rod 51 rotate relatively around the sixth axis F, and the front connecting rod 52 rotates around the fifth axis E relative to the seat support 4 and pulls the front side of the seat support 4, so that the seat support 4 rotates around the third axis C relative to the front connecting seat 22 and is close to the front frame assembly 11.

As shown in fig. 5 to 7, the front connecting seat 112 is provided with a first arc hole 113 and a second arc hole 114, the linkage rod 51 and the front connecting rod 52 are hinged to each other around a sixth axis F through a front connecting shaft 54, the front connecting shaft 54 is inserted into the first arc hole 113 and can move in the first arc hole 113, the rear connecting rod 53 and the linkage rod 51 are hinged to each other around a seventh axis G through a rear connecting shaft 55, and the rear connecting shaft 55 is inserted into the second arc hole 114 and can move in the second arc hole 114. When the push rod assembly 2 rotates around the second axis to be close to the rear frame assembly 12, the push rod seat 22 pulls the rear end of the rear connecting rod 53, the rear connecting rod 53 pulls the linkage rod 51 to rotate relative to the front connecting seat 122, the rear connecting shaft 55 between the rear connecting rod 53 and the linkage rod 51 moves in the second arc-shaped hole 114, meanwhile, the linkage rod 51 pulls the front connecting rod 52, the front connecting shaft 54 between the linkage rod 51 and the front connecting rod 52 moves in the first arc-shaped hole 113, and the movement track of the front connecting rod 52 and the rear connecting rod 53 can be controlled through the arrangement of the first arc-shaped hole 113 and the second arc-shaped hole 114, so that the seat support 4 rotates smoothly to be close to the front frame assembly 11, and folding is flexible and smooth.

As shown in fig. 4, 6 and 8, the linkage rod is in a shape of 7, so that the child stroller is compact in structure and flexible in folding operation.

As shown in fig. 4 and 7, the transmission rod is hinged at one end to the front connecting seat 112 about the ninth axis I and at the other end to the push rod seat 22 about the tenth axis J and offset from the second axis B. Therefore, when the push rod assembly 2 rotates and closes relative to the rear frame assembly 12, the push rod seat 22 can pull the front frame assembly 11 to rotate and close relative to the rear frame assembly 12 through the transmission rod, and the transmission structure is simple and compact and flexible to fold and close.

As shown in fig. 5 and 8, the push rod 21 includes a lower push rod 211 connected to the push rod seat 22 and an upper push rod 212 capable of extending and contracting in the lower push rod 211, the locking device includes a locking groove 61 provided on the rear connecting seat 122, a sliding block 62 capable of sliding in the push rod seat 22 is provided in the push rod seat 22, a locking pin 63 capable of engaging with or disengaging from the locking groove 61 is provided on the sliding block 62, an arc groove 64 communicating with the locking groove 61 and capable of allowing the locking pin 63 to move in when the push rod assembly 2 rotates close to the rear frame assembly 12 relatively to the lower push rod 211 is provided in the lower push rod 211, a driving block 65 capable of sliding in the lower push rod 211 to push the sliding block 62 is provided between the push rod seat 22 and the sliding block 62, and a pushing part 67 capable of pushing the sliding in the driving block 65 relatively to slide is provided at the lower end of the upper push rod 212. When the stroller needs to be folded, the push rod 212 is pushed to slide downwards, the pushing part 67 pushes the driving block 65 to slide, the driving block 65 pushes the sliding block 62 to slide, the locking pin 63 on the sliding block 62 is withdrawn from the locking groove 61 and can enter the arc groove 64, and at the moment, the push rod assembly 2 can rotate and close relative to the rear frame assembly 12, so that the front frame assembly 11 and the seat support 4 can rotate and fold, and the unlocking operation is very convenient and quick. The driving block 65 and the sliding block 62 are provided with inclined surfaces which are abutted against each other, so that when the driving block 65 slides downwards, the sliding block 62 can be pushed to slide relative to the push rod seat 22, and then unlocking is performed.

As shown in fig. 2, 4, 12, 13 and 14, the seat support 4 is further connected with a seat assembly 7 capable of being unfolded or folded, the seat assembly 7 is rotatably connected with the seat support 4 to be capable of rotating and reversing relative to the seat support 4, a plurality of protruding portions 42 are arranged on the outer side of the seat support 4 at intervals along the circumferential direction, an extending portion 43 is transversely extended outwards from the upper end of the protruding portion 42, the seat assembly 7 comprises a seat portion 71, a protruding ring 72 capable of being sleeved on the outer sides of the protruding portion 42 and the extending portion 43 is arranged on the lower side of the seat portion 71, and a hanging portion 73 capable of being hung on the extending portion 43 when the seat portion 71 is connected with the seat support 4 is arranged on the inner wall of the protruding ring 72. The seat assembly 7 is smooth and steady in the rotating reversing process by the hooking cooperation of the hooking part 73 and the extending part 43.

As shown in fig. 2 and 8, the upper end of the rear frame assembly 12 is provided with a bail 8 which can rotate relative thereto. When the locking means is unlocked, the push rod assembly 2 is rotated backwards and then the bail 8 is lifted upwards, the front frame assembly 11 can be brought closer to the rear frame assembly 12 and the seat support 4 to the front frame assembly 11. In this embodiment, the seat assembly 7 is a foldable seat assembly, and the stroller is folded first and then the push rod assembly 2 is rotated after unlocking the locking means.

Claims (9)

1. The utility model provides a children's shallow, can remove to folding position from the expansion position after locking device unblock, its characterized in that: the baby stroller comprises a bottom support frame (1), the bottom support frame (1) comprises a front frame component (11) with a front wheel (11 a) and a rear frame component (12) with a rear wheel (12 a), the front frame component (11) and the rear frame component (12) are rotatably connected around a first axis (A), the bottom support frame (1) is rotatably connected with a push rod component (2) around a second axis (B), a transmission piece (3) capable of pulling the front frame component (11) towards the rear frame component (12) when the push rod component (2) is rotatably closed relative to the rear frame component (12) is arranged between the push rod component (2) and the front frame component (11), the transmission piece (3) is a transmission rod, one end of the transmission rod is hinged on the front frame component (111), the other end of the transmission rod is hinged on the push rod component (2), the baby stroller further comprises a seat support piece (4), a connecting part (41) is arranged on the seat support piece (4), and the connecting part (41) is rotatably connected with the front frame component (11) around a third axis (C) Still be equipped with between preceding frame subassembly (11) and push rod subassembly (2) and can stimulate seat support piece (4) and rotate link (5) that draw close to preceding frame subassembly (11) when push rod subassembly (2) are rotated and draw close to back frame subassembly (12), the link include middle part around fourth axis (D) articulated gangbar (51) on preceding frame subassembly (11), gangbar (51) front end and seat support piece (4) between be equipped with preceding connecting rod (52) with both articulated, gangbar (51) rear end and push rod subassembly (2) between be equipped with both articulated back connecting rod (53), preceding frame subassembly (11) on be connected with pedal subassembly (13) that are used for supporting the foot, pedal subassembly (13) include footboard (131) and establish supporting seat (132) in footboard (131) downside, supporting seat (132) can be equipped with can be relative its gliding latch (133), preceding frame subassembly (11) on be equipped with a plurality of latch grooves (14) that can block with the latch along its length direction.

2. The stroller of claim 1, wherein: the front frame assembly (11) include preceding leg (111) and establish preceding connecting seat (112) in preceding leg (111) upper end, back frame assembly (12) include back leg (121) and establish back connecting seat (122) on back leg (121), push rod assembly (2) include push rod (21) and establish push rod seat (22) in push rod (21) lower extreme, preceding connecting seat (112) rotationally connect on back connecting seat (122) around first axis (A), push rod seat (22) rotationally connect on back connecting seat (122) around second axis (B), connecting portion (41) articulate on preceding connecting seat (112) around third axis (C), connecting rod (51) articulate on preceding connecting seat (112) around fourth axis (D), preceding connecting rod (52) one end articulated with seat support (4) around fifth axis (E), the other end articulates with connecting rod (51) around second axis (F) and the back connecting rod (51) and the position of the linkage (H) around second axis (G) and the other end of the linkage rod (51) is articulated around second axis (G) and the position of the linkage rod (51).

3. The stroller of claim 2, wherein: the front connecting seat (112) on be equipped with first arc hole (113) and second arc hole (114), gangbar (51) and preceding connecting rod (52) pass through preceding connecting axle (54) and articulate each other around sixth axis (F), preceding connecting axle (54) wear to establish in first arc hole (113) and can be at first arc hole (113) internal activity, back connecting rod (53) and gangbar (51) pass through back connecting axle (55) and articulate each other around seventh axis (G), back connecting axle (55) wear to establish in second arc hole (114) and can be at second arc hole (114) internal activity.

4. A stroller according to claim 3, wherein: the linkage rod is 7-shaped.

5. The stroller of claim 1, wherein: one end of the transmission rod is hinged on the front connecting seat (112) around a ninth axis (I), and the other end of the transmission rod is hinged on the push rod seat (22) around a tenth axis (J) and deviates from the position of the second axis (B).

6. A stroller according to any one of claims 2 to 4, wherein: push rod (21) include lower push rod (211) and can stretch out and draw back in last push rod (212) of push rod (211) down with push rod seat (22), locking device including establish locking groove (61) on back connecting seat (122), push rod seat (22) in be equipped with slider (62) that can slide in it, slider (62) on be equipped with can with locking groove (61) block or break away from locking pin (63), back connecting seat (122) on still be equipped with locking groove (61) intercommunication and can supply locking pin (63) to move in arc wall (64) when push rod assembly (2) are relative back frame assembly (12) rotates and draw close, lower push rod (211) in be equipped with can slide in it and promote slider (62) gliding drive block (65), push rod seat (22) and slider (62) between still be equipped with reset spring (66) that can promote slider (62) reset, last push rod (212) lower extreme be equipped with and can push away slider (67) when pushing down slider (67) relatively.

7. The stroller of claim 1, wherein: the seat support (4) is also connected with a seat assembly (7) which can be unfolded or folded.

8. The stroller of claim 7, wherein: the seat assembly (7) can rotate and change direction relative to the seat support (4) by being rotatably connected with the seat support (4), a plurality of convex parts (42) are arranged on the outer side of the seat support (4) along the circumferential direction at intervals, extension parts (43) are transversely arranged at the upper ends of the convex parts (42) in an outward lateral extension mode, the seat assembly (7) comprises a seat part (71), a convex ring (72) which can be sleeved on the outer sides of the convex parts (42) and the extension parts (43) is arranged on the lower side of the seat part (71), and a hanging part (73) which can be hung with the extension parts (43) when the seat part (71) is connected with the seat support (4) is arranged on the inner wall of the convex ring (72).

9. The stroller of claim 1, wherein: the upper end of the rear frame component (12) is provided with a lifting ring (8) which can rotate relative to the rear frame component.