Stroller framework

Abstract

The utility model discloses a child stroller framework which comprises a bottom supporting frame, the bottom supporting frame comprises front legs and rear legs which are rotatably connected with the front legs around a first axis, wheels are connected to the lower ends of the front legs and the rear legs, and a push rod assembly is rotatably connected to the bottom supporting frame around a second axis. A seat assembly is further arranged between the front legs and the rear legs and comprises a seat frame, the front side of the seat frame is rotatably connected with the front legs around a third axis, a rear supporting piece is hinged to the rear legs around a fourth axis, and the front side of the rear supporting piece is hinged to the rear side of the seat frame around a fifth axis. The locking device comprises a first locking assembly arranged between the push rod assembly and the bottom supporting frame, and a second locking assembly is arranged between the rear supporting piece and the seat frame. The folding chair is simple in structure, convenient to fold and operate and small in size after being folded.

Description

Technical Field

[0001] The utility model relates to a frame of a baby carriage.

Background Art

[0002] At present, baby carriages have become indispensable items in the growth process of children. Generally, baby carriages on the market can be folded or unfolded, but the existing baby carriages have complex transmission structures, many connecting rods, and still have a large volume after folding. Therefore, people are eager to have a baby carriage that is convenient to fold, has a simple structure and a small volume after folding.

[0003] Therefore, the utility model further provides a new implementation.

Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a frame of a baby carriage with a simple structure, convenient folding operation and a small volume after folding.

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

[0006] A frame of a baby carriage can be changed from an unfolded state to a folded state after the locking device is unlocked, including a bottom support frame. The bottom support frame includes a front leg and a rear leg rotatably connected to the front leg around a first axis. Wheels are connected to the lower ends of the front leg and the rear leg. A push rod assembly is rotatably connected to the bottom support frame around a second axis. A seat assembly is further arranged between the front leg and the rear leg. The seat assembly includes a seat frame rotatably connected to the front leg around a third axis at the front side. A rear support member is hinged to the rear leg around a fourth axis. The front side of the rear support member is hinged to the rear side of the seat frame around a fifth axis. The locking device includes a first locking component arranged between the push rod assembly and the bottom support frame. A second locking component is arranged between the rear support member and the seat frame.

[0007] A horizontally extending cross bar is arranged at the rear side of the seat frame. A horizontally extending connecting rod is arranged on the rear support member and deviates from the fifth axis. The second locking component includes a locking portion arranged on the cross bar. A locking piece is arranged on the connecting rod. A locking hole is arranged on the locking piece and can be engaged with the locking portion when the frame of the baby carriage is in the unfolded state.

[0008] The locking piece is a plastic elastic piece arranged in the middle of the connecting rod. The locking portion is a convex column arranged on the cross bar.

[0009] The rear support member is of a sheet structure and is arranged on both sides of the seat frame. The connecting rod is in an arc shape.

[0010] The front legs described above include front leg rods and front leg seats provided at the upper ends of the front leg rods. The rear legs are rotatably connected to the front leg seats about a first axis. The push rod assembly includes a push rod seat rotatably connected to the front leg seats about a second axis. A hand push rod is provided on the push rod seat. The first locking assembly is provided between the push rod seat and the front leg seat.

[0011] The first locking assembly includes a sliding groove provided on the push rod seat. A locking groove communicating with the sliding groove is provided on the front leg seat. A locking block capable of sliding therein is provided in the sliding groove. When the locking block slides into the locking groove, the first locking assembly is in a locked state. When the locking block slides out of the locking groove, the first locking assembly is in an unlocked state. A pulling rope capable of pulling the locking block to slide is provided in the hand push rod. A switch connected to the pulling rope is further provided on the hand push rod. A return spring capable of pushing the locking block to reset is further provided between the push rod seat and the locking block.

[0012] A front armrest capable of rotating relative thereto is further provided on the front leg seat. The front armrest includes an armrest seat rotatably connected to the front leg seat about a first axis. A U-shaped armrest rod is connected to the armrest seat. A first arc-shaped hole is provided on the front leg seat along the circumferential direction. A second arc-shaped hole is provided on the push rod seat along the circumferential direction. A transverse axis passing through the first arc-shaped hole and the second arc-shaped hole horizontally is provided on the armrest seat. When the child stroller frame is in the unfolded state, the ends of the first arc-shaped hole and the second arc-shaped hole clamp the transverse axis to lock the front armrest. When the push rod assembly rotates and folds relative to the front leg seat, the end of the second arc-shaped hole releases the transverse axis, enabling the transverse axis to move within the first arc-shaped hole.

[0013] When the child stroller is in the unfolded state, the wall of the locking groove abuts against the side wall of the locking block to prevent the push rod assembly from rotating and folding counterclockwise. Moreover, the transverse axis abuts against the end of the second arc-shaped hole to prevent the push rod assembly from rotating and folding clockwise.

[0014] The armrest rod is detachably connected to the armrest seat.

[0015] A leg support plate capable of rotating relative thereto to adjust the angle is connected to the front end of the seat frame.

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

[0017] 1. When the child stroller frame of the present utility model is folded, first unlock the first locking assembly to enable the push rod assembly to rotate and fold relative to the bottom support frame. Then unlock the second locking assembly and lift the rear side of the seat frame upward. The seat frame and the rear support member rotate relative to the front legs and the rear legs respectively, and the relative rotation and upward movement occur at the connection position between the seat frame and the rear support frame, so that the front legs and the rear legs also approach and fold together. The entire child stroller frame has a simple structure, fewer connecting rods, a small volume after folding, and the folding operation is very convenient and fast.

[0018] 2. When unlocking the second locking component of the present utility model, only need to pull the plastic elastic sheet so that the locking hole on the plastic elastic sheet is disengaged from the convex column on the cross bar. Since the plastic elastic sheet on the connecting rod no longer exerts a pulling force on the cross bar, at this time, only need to lift the cross bar upward to make the seat frame and the rear support member rotate, so that the front legs and the rear legs are close to each other. Therefore, when folding the skeleton of the baby stroller, only need to first move the push rod assembly close to the front legs, and then pull the plastic elastic sheet and lift the cross bar on the seat frame upward, which is very convenient and fast to operate.

[0019] 3. When the skeleton of the baby stroller of the present utility model is in the unfolded state, the locking block in the push rod seat is inserted into the locking groove of the front leg seat, and at this time, the horizontal axis on the armrest seat is clamped by the end of the second arc-shaped hole on the push rod seat and the end of the first arc-shaped hole on the front leg seat, so that the front armrest is also kept in the unfolded state. And at this time, the wall of the locking groove abuts against the side wall of the locking block to prevent the push rod assembly from rotating counterclockwise to fold, and the horizontal axis abuts against the end of the second arc-shaped hole to prevent the push rod assembly from rotating clockwise to fold. When it is necessary to change the skeleton of the baby stroller to the folded state, only need to pull the locking block, and the side wall of the locking block is disengaged from the wall of the locking groove. At this time, the push rod assembly can rotate counterclockwise. During the rotation process, the end of the second arc-shaped hole is disengaged from the horizontal axis, and the second arc-shaped hole and the first arc-shaped hole no longer clamp the horizontal axis, and the front armrest rotates relative to the front leg seat under the action of gravity, and the horizontal axis moves in the first arc-shaped hole. Therefore, the first locking component locks the push rod assembly and the bottom support frame while also locking the front armrest, and the whole structure is compact and ingeniously designed.

Description of the Drawings

[0020] Figure 1 is one of the perspective views of the present utility model;

[0021] Figure 2 is the second perspective view of the present utility model;

[0022] Figure 3 is the side view of the present utility model in the unfolded state;

[0023] Figure 4 is the side view of the present utility model during the folding process;

[0024] Figure 5 is the perspective view of the present utility model during the folding process;

[0025] Figure 6 is the side view of the present utility model in the folded state;

[0026] Figure 7 is the perspective view of the present utility model in the folded state;

[0027] Figure 8 is the sectional view of the present utility model;

[0028] Figure 9 is Figure 8 an enlarged view of the position F in the figure;

[0029] Figure 10 is an exploded view of the components of the present utility model.

Detailed implementation manners

[0030] The present utility model will be further described below in conjunction with the accompanying drawings:

[0031] As Figures 1 to 7 shown, a child stroller frame has an unfolded state and a folded state, and can be transformed between the unfolded state and the folded state after the locking device is unlocked. When in the unfolded state, it is for children to sit on, and when in the folded state, it is convenient for carrying or storing.

[0032] As Figures 1 to 7 shown, the child stroller frame includes a bottom support frame 1. The bottom support frame 1 includes a front leg 11 and a rear leg 12 that is rotatably connected to the front leg 11 around a first axis A. The rear leg 12 can rotate relative to the front leg 11 to unfold or fold. In this embodiment, the front leg 11 includes a front leg rod 111 and a front leg seat 112 at its upper end. The rear leg 12 is rotatably connected to the front leg seat 112. A wheel 13 is connected to the lower end of the front leg rod 111, and a wheel 13 is also connected to the lower end of the rear leg 12. The wheels 13 are provided for the child stroller to move.

[0033] As Figures 1 to 7 shown, a push rod assembly 2 is rotatably connected to the bottom support frame 1 around a second axis B. The push rod assembly 2 is used to push the child stroller frame. The push rod assembly 2 includes a push rod seat 21 that is rotatably connected to the front leg seat 112 around the second axis B. A hand push rod 22 is provided on the push rod seat 21. Therefore, the hand push rod 22 and the push rod seat 21 can rotate relative to the front leg seat 112 and fold close to the front leg 11.

[0034] As Figures 1 to 7As shown, a seat assembly 3 for children to sit on is also provided between the front legs 11 and the rear legs 12. The seat assembly 3 includes a seat frame 31 rotatably connected to the front legs 11 around a third axis C at the front side, a transversely extending crossbar 33 is provided at the rear side of the seat frame 31, a rear support member 32 is hinged to the rear legs 12 around a fourth axis D, the front side of the rear support member 32 is hinged to the rear side of the seat frame 31 around a fifth axis E, a transversely extending connecting rod 34 is provided on the rear support member 32 and deviates from the fifth axis E, and the rear support member 32 is a sheet-like structure and is provided on both sides of the seat frame 31. When the child stroller needs to be folded, the seat frame 31 and the rear support frame 32 are rotated and moved upward at the joint position. In this process, the seat frame 31 rotates relative to the front legs 11, and the rear support member 32 rotates relative to the rear legs 12, so that the front legs 11 and the rear legs 12 can be pulled by the seat frame 31 and the rear support member 32 to rotate and move closer to each other, thereby realizing the folding of the bottom support frame 1 and the folding of the child stroller. The entire stroller has a simple frame structure, fewer connecting rods, and is easy to fold. It also has a small volume after folding, making it easy to carry or store.

[0035] like Figure 2 , Figure 5 , Figure 7 , Figure 9 and Figure 10 As shown, the locking device includes a first locking assembly 41 disposed between the push rod assembly 2 and the bottom support frame 1, and a second locking assembly 42 is disposed between the rear support member 32 and the seat frame 31. The first locking assembly 41 locks the push rod assembly 2 and the bottom support frame 1, so that the push rod assembly 2 is kept in the unfolded position relative to the front legs 11. The second locking assembly 42 locks the bottom support frame 1, so that the bottom support frame 1 is kept in the unfolded position.

[0036] like Figure 2 , Figure 5 , Figure 7 As shown, the second locking assembly 42 includes a locking portion 421 disposed on the cross bar 33, and a locking piece 422 is disposed on the connecting rod 34. The locking piece 422 is provided with a locking hole 423 that can be engaged with the locking portion 421 when the child stroller frame is in the unfolded state. When the locking hole 423 is engaged with the locking portion 421, the locking piece 422 pulls the cross bar 33 and the connecting rod 34 closer together, and prevents the seat frame 31 and the rear support member 32 from rotating relative to each other, thereby keeping the bottom support frame 1 in the unfolded state. When the locking hole 423 is disengaged from the locking portion 421, the seat frame 31 and the rear support member 32 can rotate relative to each other, and the cross bar 33 and the connecting rod 34 are relatively far apart. In this embodiment, the locking piece 422 is a plastic elastic piece disposed in the middle of the connecting rod 34, which is convenient for the user to pull it by hand. The locking portion 421 is a convex column disposed on the cross bar 33, and the connecting rod 34 is in an arch shape.

[0037] As Figures 8 to 10 shown, the first locking assembly 41 includes a sliding groove 411 provided on the push rod base 21, a locking groove 412 communicated with the sliding groove 411 is provided on the front leg base 112, a locking block 413 capable of sliding therein is provided in the sliding groove 411. When the locking block 413 slides into the locking groove 412, the first locking assembly 41 is in a locked state. When the locking block 413 slides out of the locking groove 412, the first locking assembly 41 is in an unlocked state. A pulling rope 414 capable of pulling the locking block 413 to slide is provided in the hand push rod 22, a switch 415 connected to the pulling rope 414 is further provided on the hand push rod 22, and a return spring 416 capable of pushing the locking block 413 to reset is further provided between the push rod base 21 and the locking block 413. When the locking block 413 is engaged with the locking groove 412, the front leg base 112 and the push rod base 21 cannot rotate relative to each other, and the push rod assembly 2 is held in the deployed position. When the locking block 413 is disengaged from the locking groove 412, the push rod assembly 2 can rotate and fold relative to the front leg 11. During operation, only need to operate the switch 415 to pull the pulling rope 414 to pull the locking block 413 out of the locking groove 412.

[0038] As Figure 1 、 Figure 9 and Figure 10 shown, a front armrest 5 capable of rotating relative to it is further provided on the front leg base 112. The front armrest 5 is for a child sitting in the baby stroller to grip to ensure safety. The front armrest 5 includes an armrest base 51 rotatably connected to the front leg base 112 around a first axis A. A U-shaped armrest rod 52 is detachably connected to the armrest base 51. A first arc-shaped hole 61 is provided on the front leg base 112 along the circumferential direction, a second arc-shaped hole 62 is provided on the push rod base 21 along the circumferential direction. A transverse axis 63 passing through the first arc-shaped hole 61 and the second arc-shaped hole 62 horizontally is provided on the armrest base 51. When the baby stroller frame is in the deployed state, the ends of the first arc-shaped hole 61 and the second arc-shaped hole 62 clamp the transverse axis 63 to lock the front armrest 5. When the push rod assembly 2 rotates and folds relative to the front leg base 112, the end of the second arc-shaped hole 62 releases the transverse axis 63 so that the transverse axis 63 can move in the first arc-shaped hole 61. When the baby stroller is in the deployed state, the wall 412a of the locking groove 412 abuts against the side wall of the locking block 413 to prevent the push rod assembly 2 from rotating and folding counterclockwise, and the transverse axis 63 abuts against the end of the second arc-shaped hole 62 to prevent the push rod assembly 2 from rotating and folding clockwise.

[0039] As Figure 3 、 Figure 9 and Figure 10When the child stroller frame is in the unfolded state, the locking block 413 in the push rod seat 21 is inserted into the locking groove 412 of the front leg seat 112. At this time, the horizontal shaft 63 on the armrest seat 51 is clamped by the end of the second arc-shaped hole 62 on the push rod seat 21 and the end of the first arc-shaped hole 61 on the front leg seat 112, so that the front armrest 5 is also kept in the unfolded state. And at this time, the groove wall 412a of the locking groove 412 abuts against the side wall of the locking block 413 to prevent the push rod assembly 2 from rotating counterclockwise to fold. The horizontal shaft 63 blocked by the end of the first arc-shaped hole 61 abuts against the end of the second arc-shaped hole 62 to prevent the push rod assembly 2 from rotating clockwise to fold. Therefore, the horizontal shaft 63 on the armrest seat 51 also participates in locking the push rod assembly 2. Thus, only one groove wall of the locking groove 412 needs to abut and cooperate with the locking block 413, and the locking groove 412 can be made larger to provide enough moving space for the push rod seat 21. When the child stroller frame needs to be changed to the folded state, only need to pull the locking block 413, and the side wall of the locking block 413 is separated from the groove wall 412a of the locking groove 412. At this time, the push rod assembly 2 can rotate counterclockwise. During the rotation, the end of the second arc-shaped hole 62 is disengaged from the horizontal shaft 63, and the second arc-shaped hole 62 and the end of the first arc-shaped hole 61 no longer clamp the horizontal shaft. The front armrest 5 rotates relative to the front leg seat 112 under the action of gravity, and the horizontal shaft 63 moves in the first arc-shaped hole 61, so as to realize the linkage folding of the front armrest 5. Therefore, the first locking assembly 41 locks the push rod assembly 2 and the bottom support frame 1 while also locking the front armrest 5, and the whole structure is compact and ingeniously designed.

[0040] As Figure 1 shown, a leg support plate 35 that can rotate relative to the front end of the seat frame 31 to adjust the angle is connected to the front end of the seat frame 31. It can extend the front and rear length of the seat frame 31. When the leg support plate 35 is substantially flush with the seat frame 31, the infant can lie in the child stroller. When the leg support plate 35 rotates a certain angle relative to the seat frame 31, it can support the child's legs to make the child sit comfortably.

[0041] The above has described this embodiment in detail with reference to the drawings. However, the present utility model is not limited to the above embodiment. Within the knowledge scope of those of ordinary skill in the art in the said technical field, various changes can be made without departing from the gist of the present utility model.

Claims

1. A child stroller frame, which can be transformed from an unfolded state to a folded state after a locking device is unlocked, characterized in that: The invention comprises a bottom support frame (1), wherein the bottom support frame (1) comprises a front leg (11) and a rear leg (12) rotatably connected to the front leg (11) around a first axis (A), the lower ends of the front leg (11) and the rear leg (12) are connected to wheels (13), the bottom support frame (1) is rotatably connected to a push rod assembly (2) around a second axis (B), a seat assembly (3) is further provided between the front leg (11) and the rear leg (12), and the seat assembly (3) comprises a front side rotatably connected to the rear leg (12) around a second axis (B), and a rear leg (12) is provided with a front side rotatably connected to the rear leg (12). A seat frame (31) is rotatably connected to the front legs (11) via three axes (C); a rear support member (32) is hinged on the rear legs (12) around a fourth axis (D); the front side of the rear support member (32) is hinged to the rear side of the seat frame (31) around a fifth axis (E); the locking device comprises a first locking member (41) arranged between the push rod member (2) and the bottom support frame (1); and a second locking member (42) is arranged between the rear support member (32) and the seat frame (31).

2. The child stroller frame according to claim 1, characterized in that: A transversely extending crossbar (33) is provided on the rear side of the seat frame (31); a transversely extending connecting rod (34) is provided on the rear support member (32) and deviated from the fifth axis (E); the second locking assembly (42) comprises a locking portion (421) provided on the crossbar (33); a locking plate (422) is provided on the connecting rod (34); and a locking hole (423) is provided on the locking plate (422) which can be engaged with the locking portion (421) when the child stroller frame is in an unfolded state.

3. The child stroller frame according to claim 2, characterized in that: The locking piece (422) is a plastic elastic piece arranged in the middle of the connecting rod (34), and the locking portion (421) is a convex column arranged on the cross bar (33).

4. The child stroller frame according to claim 2, characterized in that: The rear support member (32) is a sheet-like structure and is arranged on both sides of the seat frame (31), and the connecting rod (34) is arched.

5. The child stroller frame according to claim 1, characterized in that: The front leg (11) comprises a front leg rod (111) and a front leg seat (112) arranged at the upper end of the front leg rod (111); the rear leg (12) is rotatably connected to the front leg seat (112) around a first axis (A); the push rod assembly (2) comprises a push rod seat (21) rotatably connected to the front leg seat (112) around a second axis (B); a hand push rod (22) is provided on the push rod seat (21); and the first locking assembly (41) is arranged between the push rod seat (21) and the front leg seat (112).

6. The child stroller frame according to claim 5, characterized in that: The first locking assembly (41) comprises a sliding groove (411) arranged on the push rod seat (21); a locking groove (412) communicating with the sliding groove (411) is arranged on the front leg seat (112); a locking block (413) capable of sliding therein is arranged in the sliding groove (411); when the locking block (413) slides into the locking groove (412), the first locking assembly (41) is in a locked state; when the locking block (413) slides out of the locking groove (412), the first locking assembly (41) is in an unlocked state; a pull rope (414) capable of pulling the locking block (413) to slide is arranged in the hand push rod (22); a switch (415) connected to the pull rope (414) is also arranged on the hand push rod (22); and a reset spring (416) capable of pushing the locking block (413) to reset is also arranged between the push rod seat (21) and the locking block (413).

7. The child stroller frame according to claim 6, characterized in that: The front leg seat (112) is also provided with a front armrest (5) that can rotate relative to the front leg seat (112), the front armrest (5) includes an armrest seat (51) that is rotatably connected to the front leg seat (112) around a first axis (A), the armrest seat (51) is connected to a U-shaped armrest rod (52), the front leg seat (112) is provided with a first arc hole (61) along the circumferential direction, the push rod seat (21) is provided with a second arc hole (62) along the circumferential direction, the armrest seat (51) is provided with a second arc hole (62) along the circumferential direction, and the armrest seat (51) is provided with a second arc hole (62) along the circumferential direction. ) is provided with a transverse axis (63) that passes through the first arc hole (61) and the second arc hole (62) transversely. When the child stroller frame is in an unfolded state, the ends of the first arc hole (61) and the second arc hole (62) clamp the transverse axis (63) to lock the front armrest (5). When the push rod assembly (2) is rotated and folded relative to the front leg seat (112), the end of the second arc hole (62) releases the transverse axis (63) so that the transverse axis (63) can move in the first arc hole (61).

8. The child stroller frame according to claim 7, characterized in that: When the child stroller is in the unfolded state, the slot wall (412a) of the locking slot (412) abuts against the side wall of the locking block (413) to prevent the push rod assembly (2) from rotating counterclockwise and folding, and the transverse axis (63) abuts against the end of the second arc-shaped hole (62) to prevent the push rod assembly (2) from rotating clockwise and folding.

9. The child stroller frame according to claim 7, characterized in that: The handrail rod (52) is detachably connected to the handrail seat (51).

10. The child stroller frame according to claim 1, characterized in that: The front end of the seat frame (31) is connected to a leg support plate (35) which can rotate relative to the seat frame to adjust the angle.

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