Baby carriage

Abstract

The utility model relates to a baby carriage which comprises a front frame, a rear frame, a connecting assembly, a front wheel assembly and a rear wheel assembly, the front wheel assembly is arranged on the lower portion of the front frame, the rear wheel assembly is arranged on the lower portion of the rear frame, and the connecting assembly is connected between the front frame and the rear frame. The connecting assembly is at least provided with a sitting part for sitting, the rear frame is provided with a supporting part for standing, the baby carriage has a first state and a second state, and when the baby carriage is in the first state, the front wheel assembly and the rear wheel assembly are jointly supported on the ground; when the baby carriage is in the second state, the baby carriage is supported on the ground through the rear wheel assembly. Therefore, the baby carriage has two different driving modes, and the interestingness of the baby carriage is increased.

Description

TECHNICAL FIELD

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

[0002] As a common children's riding toy, the baby carriage can exercise the control and balance ability of children, and is deeply loved by parents and children, but most of the existing baby carriages have single function, usually only have one driving mode, and children will lose interest in the baby carriage after driving for a period of time, so that the baby carriage is not used any more, not only the ability is not exercised, but also the baby carriage is idle, which causes great waste. SUMMARY

[0003] The utility model aims at providing a new baby carriage.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of: a baby carriage, the baby carriage includes a front frame, a rear frame, a connecting assembly, a front wheel assembly and a rear wheel assembly, the front wheel assembly is arranged at the lower part of the front frame, the rear wheel assembly is arranged at the lower part of the rear frame, the connecting assembly is connected between the front frame and the rear frame, at least a sitting and standing part for sitting and standing is arranged on the connecting assembly, a support part for standing is arranged on the rear frame, the baby carriage has a first state and a second state, when the baby carriage is in the first state, the front wheel assembly and the rear wheel assembly are supported on the ground together, when the baby carriage is in the second state, the baby carriage is supported on the ground through the rear wheel assembly.

[0005] In some embodiments, the connecting assembly is movably connected between the front frame and the rear frame, when the baby carriage is in the first state, the front frame and the rear frame have a first spacing in the front-rear direction, when the baby carriage is in the second state, the front frame and the rear frame have a second spacing in the front-rear direction, and the second spacing is smaller than the first spacing.

[0006] In some embodiments, the connecting assembly is rotatably connected between the front frame and the rear frame, when the baby carriage is in the first state, the connecting assembly extends in the front-rear direction, when the baby carriage is in the second state, the connecting assembly extends in the up-down direction and approaches the front frame,

[0007] Wherein, when the front frame moves relative to the rear frame in the front-rear direction, the connecting assembly is driven to move, or when the connecting assembly rotates relative to the rear frame, the front frame is driven to move relative to the rear frame in the front-rear direction, so that the baby carriage is switched between the first state and the second state.

[0008] In some embodiments, the connecting assembly comprises a seat support, the seat stand is arranged on the seat support, the seat support has a first end and a second end arranged at two different ends along a length direction of the seat support, the first end is rotatably connected to the front frame about a first center line, the second end is rotatably connected to the rear frame about a second center line, and when the stroller is in the second state, the first end is above the second end.

[0009] In some embodiments, the connecting assembly further comprises a connecting frame, the connecting frame has a third end and a fourth end arranged at two different ends along a length direction of the connecting frame, the third end is rotatably connected to the front frame about a third center line, the fourth end is rotatably connected to the rear frame about a fourth center line, wherein the first center line, the second center line, the third center line and the fourth center line are parallel to each other, and the third center line is below the first center line.

[0010] In some embodiments, the connecting frame comprises two groups of connecting rods arranged at intervals along a left-right direction, the two groups of connecting rods are rotatably connected to the front frame and the rear frame respectively, the front frame is located between the two groups of connecting rods, when the stroller is in the second state, the front frame and the connecting frame are folded towards each other, the front wheel assembly is suspended, and the front frame and the front wheel assembly are folded between the two groups of connecting rods.

[0011] In some embodiments, the seat support has a seat surface and a receiving cavity, the receiving cavity has an opening open away from the seat surface, when the stroller is in the first state, the seat surface faces upwards and the opening faces downwards; when the stroller is in the second state, the seat surface faces backwards and the opening faces forwards, and at least part of the front wheel assembly is located in the receiving cavity.

[0012] In some embodiments, the seat support has a seat surface, when the stroller is in the first state, the first center line is higher than the second center line, and the first center line and the second center line are located on a virtual plane together, the angle between the virtual plane and the seat surface is an acute angle.

[0013] In some embodiments, the front frame is provided with a handrail, the handrail has a handle portion for holding, during the conversion of the stroller from the first state to the second state, the height of the handle portion is raised, and when the stroller is in the second state, the handrail is located in front of the support portion.

[0014] In some embodiments, when the stroller is in a first state, the connecting assembly extends in the front-to-back direction; when the stroller is in a second state, the connecting assembly extends in the vertical direction. The stroller also includes an auxiliary wheel disposed on the connecting assembly. The auxiliary wheel includes a wheel frame and a wheel body disposed on the wheel frame. The wheel frame is rotatably connected to the connecting assembly about a rotation axis. When the stroller is in the first state, the rotation axis extends in the front-to-back direction; when the stroller is in the second state, the rotation axis extends in the vertical direction, and the auxiliary wheel and the rear wheel assembly are spaced apart in the front-to-back direction. When the connecting assembly moves relative to the front frame and the rear frame, it is linked to cause the rotation axis to change its extension direction.

[0015] In some embodiments, the stroller is in the second state, and the auxiliary wheel is located in front of the rear wheel assembly; the bottom of the rear frame is also provided with a swivel wheel, which is located behind the rear wheel assembly, wherein the rear wheel assembly has two sets of rear wheel assemblies spaced apart in the left-right direction, and the auxiliary wheel and the swivel wheel are both located between the two sets of rear wheel assemblies in the left-right direction.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: The children's vehicle of this utility model has a first state and a second state, thus having two different driving modes. In the first state, the front wheel assembly and the rear wheel assembly are supported on the ground together, and the child can sit on the seat of the connecting assembly to drive the children's vehicle; in the second state, the children's vehicle is supported on the ground by the rear wheel assembly, and the child can stand on the support of the rear frame to drive the children's vehicle. This gives the child different driving methods and increases the fun of the children's vehicle. Attached Figure Description

[0017] Appendix Figure 1 This is a three-dimensional structural diagram of a children's stroller in a first state according to a specific embodiment of the present invention;

[0018] Appendix Figure 2 Appendix to this utility model Figure 1 A three-dimensional diagram from another perspective;

[0019] Appendix Figure 3 For the appendix Figure 1 Partially exploded diagram;

[0020] Appendix Figure 4 For the appendix Figure 3 Enlarged view of point A in the middle;

[0021] Appendix Figure 5 This is a partially exploded view of the stroller in this embodiment;

[0022] Appendix Figure 6 For the appendixFigure 1 The left view;

[0023] Appendix Figure 7 For the appendix Figure 1 Front view;

[0024] Appendix Figure 8 For the appendix Figure 1 The right view;

[0025] Appendix Figure 9 For the appendix Figure 1 Top view;

[0026] Appendix Figure 10 For the appendix Figure 1 A bottom view;

[0027] Appendix Figure 11 This is a three-dimensional schematic diagram of the stroller in the second state according to this embodiment;

[0028] Appendix Figure 12 For the appendix Figure 11 A three-dimensional diagram from another perspective;

[0029] Appendix Figure 13 For the appendix Figure 11 The left view;

[0030] Appendix Figure 14 For the appendix Figure 11 Front view;

[0031] Appendix Figure 15 For the appendix Figure 11 The right view;

[0032] Appendix Figure 16 For the appendix Figure 11 Top view;

[0033] Appendix Figure 17 For the appendix Figure 11 A bottom view;

[0034] The components include: 1. Front frame; 11. Handrail; 111. Handlebar; 112. Front support rod; 12. Front connector; 13. Front fork; 2. Rear frame; 21. Upper cover; 211. Support; 22. Lower cover; 221. Protrusion; 222. Through groove; 23. Front cover; 24. Rear cover; 25. Support pedal; 26. Start pedal; 27. Start switch; 28. Power switch; 29. ​​Rear connector; 29 1. Through hole; 292. Connecting post; 3. Seat bracket; 31. First end; 32. Second end; 33. Seating surface; 34. Receiving cavity; 35. Clearance groove; 4. Connecting frame; 41. Third end; 42. Fourth end; 43. Connecting rod; 431. Foot pedal; 44. Cross link; 5. Front wheel assembly; 6. Rear wheel assembly; 7. Auxiliary wheel; 71. Wheel frame; 72. Wheel body; 73. Rotating shaft; 8. Caster wheel. Detailed Implementation

[0035] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings, so that the advantages and features of this utility model can be more easily understood by those skilled in the art. Obviously, the embodiments described in this application are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0036] See Figure 1 , Figure 2 The stroller shown includes a front frame 1, a rear frame 2, and a connecting assembly. The connecting assembly connects the front frame 1 and the rear frame 2. The stroller also includes a front wheel assembly 5 and a rear wheel assembly 6. The front wheel assembly 5 is located at the lower part of the front frame 1, and the rear wheel assembly 6 is located at the lower part of the rear frame 2. The connecting assembly has a sitting part for providing a seat, and the rear frame 2 has a support part 211 for providing a standing position.

[0037] This stroller has a first state and a second state. When the stroller is in the first state, see [link / reference]. Figures 6 to 10 As shown, the front wheel assembly 5 is located in front of the rear wheel assembly 6, and both the front wheel assembly 5 and the rear wheel assembly 6 are supported on the ground. In this state, the stroller is mainly in a seated driving mode, where the child can sit upright on the seat of the connecting assembly to drive. The child's center of gravity is located between the front frame 1 and the rear frame 2, making driving more stable. When the stroller is in the second state, see... Figures 11 to 17 As shown, the front wheel assembly 5 is suspended in the air, and the stroller is supported on the ground by the rear wheel assembly 6. In this state, the stroller is converted to a standing driving mode, where the child can stand on the support 211 to drive. The child's center of gravity shifts backward and is mainly located on the rear frame 2, making the stroller more agile and primarily used as a balance bike. In this embodiment, see... Figures 1 to 3As shown, the rear wheel assembly 6 includes two groups arranged at intervals along the left-right direction, and in the first state and the second state, the two groups of rear wheel assemblies 6 are jointly supported on the ground, which can improve the stability of the stroller.

[0038] In some embodiments, the connecting assembly is detachably connected with the rear frame 2, and in the second state, the connecting assembly and the front frame 1 are both removed, and only the rear frame 2 and the rear wheel assembly 6 are used; in other embodiments, the connecting assembly is detachably connected with the front frame 1 and the rear frame 2, and the front frame 1 can be detachably mounted on the rear frame 2, and in the second state, the connecting assembly is detached from between the front frame 1 and the rear frame 2, and the front frame 1 is mounted on the rear frame 2 for joint use.

[0039] In this embodiment, the connecting assembly is movably connected between the front frame 1 and the rear frame 2, wherein, in the first state of the stroller, the front frame 1 and the rear frame 2 have a first interval along the front-rear direction; in the second state of the stroller, the front frame 1 and the rear frame 2 have a second interval along the front-rear direction, and the second interval is smaller than the first interval. Specifically, the connecting assembly is rotatably connected between the front frame 1 and the rear frame 2, and when the stroller is in the first state, the connecting assembly extends along the front-rear direction, and when the stroller is in the second state, the connecting assembly extends along the up-down direction and approaches the front frame 1. When the front frame 1 moves relative to the rear frame 2 along the front-rear direction, the connecting assembly moves, or when the connecting assembly rotates relative to the rear frame 2, the front frame 1 and the rear frame 2 move relative to each other along the front-rear direction, thereby switching the stroller between the first state and the second state.

[0040] In this embodiment, the front frame 1 is provided with a handrail 11 having a handle portion 111 for holding, and in the process of converting the stroller from the first state to the second state, the height of the handle portion 111 is raised, and when the stroller is in the second state, the handrail 11 is located in front of the support portion 211. In the second state, the child steps on the support portion 211 and holds the raised handle portion 111 to drive.

[0041] In this embodiment, the connecting assembly at least includes a seat support 3 for providing a sitting support, and the sitting portion is arranged on the seat support 3. The seat support 3 has a first end portion 31 and a second end portion 32 arranged at different ends along the length direction of the seat support 3, the first end portion 31 is rotatably connected to the front frame 1 about a first center line X1, and the second end portion 32 is rotatably connected to the rear frame 2 about a second center line X2. Specifically, in the first state, the first end portion 31 is the front end portion of the seat support 3, and the second end portion 32 is the rear end portion of the seat support 3. In the process of converting the stroller from the first state to the second state, the seat support 3 is folded and turned forward relative to the front frame 1, and when the stroller is in the second state, the first end portion 31 is located above the second end portion 32.

[0042] In the embodiment, as shown in Figure 3 In the first state, the first center line X1 is higher than the second center line X2, and the first center line X1 and the second center line X2 are located on a virtual plane together, and the angle between the virtual plane and the sitting surface 33 is an acute angle. In this way, in the first state, the sitting surface can be raised and extend approximately in the horizontal direction, so that the child can stably sit on the upper part.

[0043] In the embodiment, when the stroller is in the second state, the front wheel assembly 5 is suspended. The stroller further comprises an auxiliary wheel 7 arranged on the connecting assembly, the auxiliary wheel 7 comprising a wheel frame 71 and a wheel body 72 arranged on the wheel frame 71, the wheel frame 71 being rotatably connected to the connecting assembly about a rotating shaft 73. When the stroller is in the first state, the rotating shaft 73 extends in the front-rear direction, as shown in Figure 10 In the connecting assembly moves relative to the front frame 1 and the rear frame 2, the rotating shaft 73 changes the extension direction. When the stroller is in the second state, the rotating shaft 73 extends in the up-down direction, and the auxiliary wheel 7 and the rear wheel assembly 6 are arranged at a distance in the front-rear direction, as shown in Figures 12 to 15 In this state, the auxiliary wheel 7 and the rear wheel assembly 6 support the ground together, so that the stroller in this state can maintain stability. In the embodiment, the auxiliary wheel 7 in the first state does not contact the ground and does not play a role. In other embodiments, in the first state, the auxiliary wheel 7 also supports the ground and is used to improve the stability of the stroller.

[0044] In the embodiment, the connecting assembly further comprises a connecting frame 4, the connecting frame 4 having a third end portion 41 and a fourth end portion 42 arranged at different ends in the length direction, the third end portion 41 being rotatably connected to the front frame 1 about a third center line X3, and the fourth end portion 42 being rotatably connected to the rear frame 2 about a fourth center line X4. Specifically, in the first state, the third end portion 41 is the front end portion of the connecting frame 4, and the fourth end portion 42 is the rear end portion of the connecting frame 4. Among them, the first center line X1, the second center line X2, the third center line X3 and the fourth center line X4 are parallel to each other, and the third center line X3 is located below the first center line X1. The front frame 1, the rear frame 2, the seat support 3 and the connecting frame 4 form a four-bar linkage mechanism, and by driving the four-bar linkage mechanism to change, the stroller can be changed between the first state and the second state.

[0045] Referring to Figure 3 , Figure 4As shown, the auxiliary wheel 7 is arranged on the fourth end 42 of the connecting frame 4, in the first state, the connecting frame 4 extends along the front-rear direction, the auxiliary wheel 7 is located at the rear side of the connecting frame 4. In the second state, the connecting frame 4 is folded relative to the front frame 1 and converted to extend along the up-down direction, the auxiliary wheel 7 is flipped along with the connecting frame 4 and converted to below the connecting frame 4.

[0046] In the embodiment, the connecting frame 4 comprises two groups of connecting rods 43 arranged at intervals along the left-right direction, and the two groups of connecting rods 43 are respectively rotatably connected with the front frame 1 and the rear frame 2. Referring to Figure 4 As shown, the connecting frame 4 further comprises a cross connecting rod 44 extending along the left-right direction, the cross connecting rod 44 is connected between the rear portions of the two connecting rods 43, and the wheel frame 71 is rotatably connected to the cross connecting rod 44 around the rotating shaft 73.

[0047] In the embodiment, the seat support 3 is provided with an avoiding groove 35 with a notch facing the connecting frame 4 near the side of the connecting frame 4, referring to Figure 7 As shown, in the first state, the avoiding groove 35 is located at the lower part of the seat support 3 and the notch faces downward. During the conversion to the second state, the third end 41 of the connecting frame 4 will block the path of the seat support 3 relative to the front frame 1 folding. By arranging the avoiding groove 35, during the conversion process, the third end 41 of the connecting frame 4 is clamped in the avoiding groove 35, so that the seat support 3 can be more tightly folded with the front frame 1.

[0048] In the embodiment, the front frame 1 is located between the two groups of connecting rods 43, when the stroller is in the second state, the front frame 1 and the connecting frame 4 are folded with each other, and the front frame 1 and the front wheel assembly 5 are folded between the two groups of connecting rods 43. In the embodiment, the seat support 3 has a receiving cavity 34, the receiving cavity 34 has an opening open away from the sitting surface 33, in the first state of the stroller, the sitting surface 33 faces upward and the opening faces downward; in the second state of the stroller, the sitting surface 33 faces backward and the opening faces forward, and at least part of the front wheel assembly 5 is located in the receiving cavity 34. By arranging the two groups of connecting rods 43 and the front wheel assembly 5 between the two groups of connecting rods 43, and the receiving cavity 34 capable of accommodating the front wheel assembly 5, in the second state, the front frame 1 and the seat support 3 can be tightly folded, so that the handrail 11 can be located at the front side of the supporting part 211.

[0049] In the embodiment, referring to Figure 9 , Figure 10 As shown, the two groups of connecting rods 43 have footrests 431 respectively arranged on the left and right sides of the seat support 3. Referring to Figure 7 As shown, in the first state, the connecting rod 43 is located below the seat support 3, in this state, the footrests 431 on both sides can provide support for the feet of the child sitting on the seat support 3.

[0050] In the embodiment, the front frame 1 further comprises a front connecting seat 12, the front connecting seat 12 is rotatably arranged on the armrest 11, the first end 31 of the seat support 3 and the third end 41 of the connecting frame 4 are both rotatably connected on the front connecting seat 12. Specifically, referring to Figure 3 As shown in the figure, the armrest 11 further comprises a front supporting rod 112 extending along the up-down direction, the handle part 111 is fixedly arranged on the upper part of the front supporting rod 112, the front connecting seat 12 is tubular and is sleeved on the front supporting rod 112, and the front connecting seat 12 can be rotatably arranged along the axis of the front supporting rod 112.

[0051] In the embodiment, the lower part of the armrest 11 is provided with a front fork 13, the front wheel assembly 5 is rotatably arranged on the front fork 13, specifically, the front fork 13 is fixedly arranged on the lower end of the front supporting rod 112, and the front fork 13 can be driven to rotate by rotating the armrest 11, so as to drive the front wheel assembly 5 to steer.

[0052] In the embodiment, the rear frame 2 comprises an upper cover body 21, a lower cover body 22, a front cover body 23 and a rear cover body 24, wherein the upper cover body 21 and the lower cover body 22 are connected together along the up-down direction, the front cover body 23 is arranged on the front side of the upper cover body 21, and the rear cover body 24 is arranged on the rear side of the upper cover body 21. The rear frame 2 further comprises a rear connecting seat 29, the upper cover body 21 and the lower cover body 22 have a receiving cavity therebetween, the rear connecting seat 29 is fixedly arranged in the receiving cavity, the second end 32 of the seat support 3 is rotatably connected with the rear connecting seat 29, and the fourth end of the connecting frame 4 is rotatably connected with the rear connecting seat 29.

[0053] Specifically, referring to Figure 5 As shown in the figure, the lower cover body 22 is provided with a protruding part 221 extending upwardly and protruding, the rear connecting seat 29 is provided with a through hole 291, and the protruding part 221 is inserted into the through hole 291. The rear connecting seat 29 is provided with a plurality of connecting columns 292, the connecting columns 292 are arranged in pairs, and the two connecting columns 292 of each pair are arranged spaced apart along the left-right direction. Referring to Figure 5 As shown in the figure, the rear connecting seat 29 is provided with three pairs of connecting columns 292, two pairs of which are arranged spaced apart on the front side of the rear connecting seat 29, and the upper parts of the two pairs of connecting columns 292 are rotatably connected with the rear ends of the two connecting rods 43 about the fourth center line X4. The third pair of connecting columns 292 is arranged on the rear side of the other two pairs of connecting columns 292, and the third pair of connecting columns 292 is higher than the other two pairs of connecting columns 292, and the second end 32 of the seat support 3 is rotatably connected with the upper part of the third pair of connecting columns 292 about the second center line X2, and the second center line X2 is higher than the fourth center line X4.

[0054] In the embodiment, the supporting part 211 comprises two parts arranged on the left and right sides of the rear frame 2 respectively, for supporting the left and right feet of the child, referring to Figure 5As shown, the support part 211 is concave downward from the upper cover body 21, and the support pedal 25 is fixed on the support part 211 to increase the friction and prevent slipping.

[0055] In the embodiment, the stroller is driven by electricity, and a driving mechanism (not shown in the figure) for driving the rear wheel assembly 6 to rotate is arranged in the accommodating cavity between the upper cover body 21 and the lower cover body 22. The rear frame 2 is further provided with a power switch 28 for connecting the power supply and a driving member for driving the driving mechanism to work to make the stroller move forward. In use, the power switch 28 is first started, and then the driving member is used to start the driving mechanism, so that the stroller can move forward.

[0056] In the embodiment, the power switch 28 is arranged between the two support parts 211, and the front cover body 23 is provided with a through hole. The front cover body 23 covers the power switch 28, and at least part of the power switch 28 is exposed from the through hole. The front cover body 23 can fix the power switch 28. In the embodiment, the one side support part 211 is provided with a mounting groove communicating with the accommodating cavity, and a starting switch 27 for starting the driving mechanism is arranged in the mounting groove. The support part 211 is provided with a starting pedal 26 capable of moving up and down, and the starting pedal 26 is movably arranged on the mounting groove. In use, the child steps on the starting pedal 26 to make the starting pedal 26 move downward, and the starting pedal 26 contacts and triggers the starting switch 27, so that the driving mechanism is started, and the stroller can move forward. Referring to Figure 8 、 Figure 9 As shown, the starting pedal 26 is arranged on the right side support part 211. Referring to Figure 3 As shown, the right side support pedal 25 is provided with an opening for avoiding the starting pedal 26. In some preferred embodiments, the force of stepping on the starting pedal 26 can be controlled to control the speed of the stroller moving forward.

[0057] In the embodiment, the stroller is in the first state, and the auxiliary wheel 7 is located in the accommodating cavity between the upper cover body 21 and the lower cover body 22. The lower part of the lower cover body 22 is provided with a through slot 222 communicating with the accommodating cavity. In the process of converting to the second state, the auxiliary wheel 7 extends downward from the through slot 222 to the accommodating cavity and finally extends below the lower cover body 22. In the embodiment, the through slot 222 is located on the front side of the lower cover body 22. When the stroller is in the second state, the auxiliary wheel 7 is located on the front side of the rear wheel assembly 6. The bottom of the rear frame 2 is further provided with a universal wheel 8. The universal wheel 8 is located on the rear side of the rear wheel assembly 6, and the universal wheel 8 is always located between the two groups of rear wheel assemblies 6 in the left-right direction. In the first state and the second state, the universal wheel 8 is supported on the ground. The arrangement of the universal wheel 8 further improves the stability of the stroller.

[0058] In summary, the stroller of the embodiment has two states, in the first state, the child can sit on the seat support 3 to drive, in the second state, the child can stand on the support part 211 to drive, which enriches the driving function and increases the interest. By driving the seat support 3 and the connecting frame 4 to rotate forward relative to the front frame 1 to fold, the rear frame 2 is close to the front frame 1, so that the stroller can be converted from the first state to the second state. By driving the seat support 3 and the connecting frame 4 to unfold backward relative to the front frame 1, and the rear frame 2 is away from the front frame 1, so that the stroller can be converted from the second state to the first state, and the conversion operation is simple.

[0059] The above embodiment is only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A stroller, characterized by: The stroller comprises a front frame, a rear frame, a connecting assembly, a front wheel assembly and a rear wheel assembly, the front wheel assembly is arranged at the lower part of the front frame, the rear wheel assembly is arranged at the lower part of the rear frame, the connecting assembly is connected between the front frame and the rear frame, the connecting assembly has at least a sitting-standing part for sitting-standing, the rear frame has a support part for standing, the stroller has a first state and a second state, when the stroller is in the first state, the front wheel assembly and the rear wheel assembly are supported on the ground together; when the stroller is in the second state, the stroller is supported on the ground by the rear wheel assembly.

2. The stroller of claim 1, wherein: The connecting assembly is movably connected between the front frame and the rear frame, when the stroller is in the first state, the front frame and the rear frame have a first interval in the front-rear direction; when the stroller is in the second state, the front frame and the rear frame have a second interval in the front-rear direction, the second interval is smaller than the first interval.

3. The stroller of claim 2, wherein: The connecting assembly is rotatably connected between the front frame and the rear frame, when the stroller is in the first state, the connecting assembly extends in the front-rear direction; when the stroller is in the second state, the connecting assembly extends in the up-down direction and approaches the front frame, wherein, when the front frame moves relative to the rear frame in the front-rear direction, the connecting assembly moves, or when the connecting assembly rotates relative to the rear frame, the front frame moves relative to the rear frame in the front-rear direction, so that the stroller switches between the first state and the second state.

4. The stroller of claim 1, wherein: The connecting assembly comprises a seat support, the sitting-standing part is arranged on the seat support, the seat support has a first end and a second end arranged at different ends in the length direction, the first end is rotatably connected to the front frame about a first center line, the second end is rotatably connected to the rear frame about a second center line, when the stroller is in the second state, the first end is above the second end.

5. The stroller of claim 4, wherein: The connecting assembly further comprises a connecting frame, the connecting frame has a third end and a fourth end arranged at different ends in the length direction, the third end is rotatably connected to the front frame about a third center line, the fourth end is rotatably connected to the rear frame about a fourth center line, wherein the first center line, the second center line, the third center line and the fourth center line are parallel to each other, and the third center line is below the first center line.

6. The stroller of claim 5, wherein: The connecting frame comprises two groups of connecting rods arranged at intervals in the left-right direction, the two groups of connecting rods are rotatably connected to the front frame and the rear frame respectively, the front frame is located between the two groups of connecting rods, when the stroller is in the second state, the front frame and the connecting frame approach each other, the front wheel assembly is suspended, and the front frame and the front wheel assembly are folded between the two groups of connecting rods; The seat support has a sitting surface and a receiving cavity with an opening facing away from the sitting surface, the sitting surface faces upward and the opening faces downward when the stroller is in the first state; the sitting surface faces backward and the opening faces forward when the stroller is in the second state, and at least part of the front wheel assembly is located in the receiving cavity.

7. The stroller of claim 4, wherein: The seat support has a sitting surface, the first center line is higher than the second center line when the stroller is in the first state, and the first center line and the second center line are located on a virtual plane together, the angle between the virtual plane and the sitting surface is an acute angle.

8. The stroller of claim 1, wherein: The front frame is provided with a handrail having a handle portion for holding, the height of the handle portion is raised during the conversion of the stroller from the first state to the second state, and the handrail is located in front of the support portion when the stroller is in the second state.

9. The stroller of claim 1, wherein: The stroller is in the first state, the connecting assembly extends in the front-rear direction; the stroller is in the second state, the connecting assembly extends in the up-down direction, the stroller further comprises an auxiliary wheel provided on the connecting assembly, the auxiliary wheel comprises a wheel frame and a wheel body provided on the wheel frame, the wheel frame is rotatably connected to the connecting assembly about a rotating shaft, the rotating shaft extends in the front-rear direction when the stroller is in the first state; the rotating shaft extends in the up-down direction when the stroller is in the second state, and the auxiliary wheel and the rear wheel assembly are spaced apart in the front-rear direction, wherein the connecting assembly is linked to change the extension direction of the rotating shaft when it moves relative to the front frame and the rear frame.

10. The stroller of claim 9, wherein: The stroller is in the second state, the auxiliary wheel is located in front of the rear wheel assembly; the bottom of the rear frame is further provided with a universal wheel, the universal wheel is located in the rear of the rear wheel assembly, wherein the rear wheel assembly has two groups spaced apart in the left-right direction, the auxiliary wheel and the universal wheel are located between the two groups of rear wheel assemblies in the left-right direction. The stroller is in the second state, the auxiliary wheel is located in front of the rear wheel assembly; the bottom of the rear frame is further provided with a universal wheel, the universal wheel is located in the rear of the rear wheel assembly, wherein the rear wheel assembly has two groups spaced apart in the left-right direction, the auxiliary wheel and the universal wheel are located between the two groups of rear wheel assemblies in the left-right direction.

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