Baby carriage

Abstract

The utility model relates to the technical field of children products, and discloses a baby carriage which comprises a frame, a seat assembly, a first wheel assembly and a second wheel assembly. The seat assembly is detachably installed on the frame, the first wheel assembly is installed at the first end of the frame, and the second wheel assembly is installed at the second end of the frame. The baby carriage at least has a first use state and a second use state, and when the baby carriage is in the first use state and the second use state, the heights of the seat assemblies are different, or the heights of the seat assemblies are the same. A user can adaptively adjust the use state of the baby carriage according to factors such as the age and the use scene of children at home, so that the height of the seat assembly is suitable for the children to use, the use requirements of the children at different age stages are met, the functions of the baby carriage are more diversified, various types of baby carriages do not need to be purchased, and the baby carriage is economical, practical and convenient to use. And the use experience of the user is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to children's products technical field especially relates to a baby carriage. BACKGROUND

[0002] Baby carriage is a big category of children's products, common baby carriage has slide step, children's bicycle, children's pushchair, children's tricycle, children's four-wheeled vehicle etc., and different types of baby carriage are suitable for children of different age groups.

[0003] Since each baby carriage can only meet the use of children of a certain age group, the function is relatively single, therefore, along with the growth of children, different types of baby carriages are usually needed to be purchased in different stages in a family, which causes resource waste, and the idle baby carriages are not easy to store, and will occupy more space.

[0004] Therefore, a baby carriage is needed to solve the above problems. UTILITY MODEL CONTENT

[0005] Based on the above problems, the purpose of the utility model is to provide a baby carriage which can realize one-car multi-purpose and has good economy and practicability.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A baby carriage is provided, which comprises:

[0008] A frame is provided with a handlebar;

[0009] A seat assembly is detachably installed on the frame;

[0010] A first wheel assembly is installed on the first end of the frame;

[0011] A second wheel assembly is installed on the second end of the frame;

[0012] The baby carriage has at least a first use state and a second use state, and the height of the seat assembly is different or the height of the seat assembly is the same when the baby carriage is in the first use state and the second use state.

[0013] As an optional scheme of the baby carriage of the utility model, the frame comprises a support rod, and the seat assembly is detachably installed on the support rod;

[0014] The support rod is provided with a first mounting portion, the seat assembly is installed on the first mounting portion when the baby carriage is in the first use state, and the seat assembly has a first height;

[0015] The support rod is provided with a second mounting portion, the seat assembly is mounted on the second mounting portion when the stroller is in a second use state, the seat assembly has a second height, and the first height is less than the second height.

[0016] As an optional scheme of the stroller of the utility model, the support rod has oppositely arranged first and second faces in a preset direction, the first mounting portion is arranged on the first face, and the second mounting portion is arranged on the second face; and / or,

[0017] The first mounting portion is oppositely arranged with the second mounting portion in the preset direction, and the first mounting portion and the second mounting portion each comprise a mounting slot, and the mounting slot penetrates through the support rod along the preset direction;

[0018] and / or,

[0019] The support rod extends in an arc shape, the arc convex surface of the support rod faces downward when the stroller is in the first use state, and the arc convex surface of the support rod faces upward when the stroller is in the second use state.

[0020] As an optional scheme of the stroller of the utility model, the stroller frame comprises a connecting assembly and a support rod, the first end of the support rod is detachably connected with the connecting assembly, the first wheel assembly is detachably connected with the connecting assembly, and the second end of the support rod is detachably mounted with the second wheel assembly.

[0021] As an optional scheme of the stroller of the utility model, the first end of the support rod is provided with a third mounting portion, and the connecting assembly is detachably connected with the third mounting portion;

[0022] The third mounting portion is in a sleeve shape; and / or,

[0023] The connecting assembly comprises a handlebar and a front fork connected with the handlebar, the first wheel assembly is detachably connected with the front fork, and the handlebar is rotationally connected with the third mounting portion; and / or,

[0024] The second end of the support rod is provided with a rear fork, and the second wheel assembly is detachably mounted with the rear fork.

[0025] As an optional scheme of the stroller of the utility model, at least one of the first wheel assembly and the second wheel assembly is detachably mounted on the stroller frame;

[0026] The first wheel assembly is detachably mounted on the first end of the stroller frame;

[0027] The first wheel assembly comprises a plurality of first wheels;

[0028] The first wheel assembly comprises a first axle group and one first wheel, and the first end of the frame is provided with a front fork, and the first wheel is rotatably connected to the front fork through the first axle group; or,

[0029] The first wheel assembly comprises a second axle group and two first wheels, and the first end of the frame is provided with a front fork, and the second axle group is rotatably connected to the front fork, and the two first wheels are coaxially arranged at two ends of the second axle group; or,

[0030] The first wheel assembly comprises a first axle group, a fixing member and one first wheel, and the first end of the frame is provided with a front fork, and the first wheel is rotatably connected to one end of the fixing member through the first axle group, and the other end of the fixing member is rotatably connected to the front fork.

[0031] As an optional scheme of the child bicycle of the utility model, the second axle group comprises a first connecting shaft and a second connecting shaft which are rotatably connected, the first connecting shaft is connected with the front fork, and two ends of the second connecting shaft are respectively connected with two first wheels;

[0032] The first connecting shaft is provided with a first connecting part, the second connecting shaft is provided with a second connecting part, the first connecting part and the second connecting part are rotatably connected through a rotating shaft, and the extension direction of the rotating shaft is perpendicular to the extension direction of the second connecting shaft.

[0033] As an optional scheme of the child bicycle of the utility model, at least one of the first wheel assembly and the second wheel assembly is detachably arranged on the frame;

[0034] The second wheel assembly is detachably arranged on the second end of the frame

[0035] The second wheel assembly comprises one second wheel;

[0036] The second wheel assembly comprises a third axle group and one second wheel, and the second end of the frame is provided with a rear fork, and the second wheel is rotatably connected to the rear fork through the third axle group; or,

[0037] The second wheel assembly comprises a fourth axle group and two second wheels, and the second end of the frame is provided with a rear fork, and the fourth axle group is rotatably connected to the rear fork, and the two second wheels are coaxially arranged at two ends of the fourth axle group.

[0038] As an optional scheme of the child bicycle of the utility model, the child bicycle further comprises:

[0039] A pedal assembly is detachably mounted on the frame, and the pedal assembly is in transmission connection with the second wheel assembly for driving the second wheel assembly to rotate.

[0040] A brake assembly is detachably mounted between the handlebar and the second wheel assembly for adjusting the rotating speed of the second wheel.

[0041] The frame is provided with a mounting structure, and the seat assembly comprises a seat body and a first fixing beam arranged on the seat body.

[0042] The pedal is provided with a first mounting member, and the first mounting member is detachably mounted on the first fixing beam or the mounting structure.

[0043] As an optional scheme of the utility model, the seat assembly further comprises a seat and a handlebar assembly, the seat is detachably mounted on the frame, and the handlebar assembly is detachably mounted on the frame or the seat.

[0044] The frame is provided with a mounting structure, and the seat assembly comprises a seat body and a first fixing beam arranged on the seat body.

[0045] The handlebar assembly comprises a push rod, and the push rod is provided with a second mounting member, and the second mounting member is detachably mounted on the seat body.

[0046] The utility model discloses the beneficial effects are:

[0047] The utility model discloses a child's bicycle, because at least have first use state and second use state, and the height of seat assembly is different or same when different use state, therefore, user can adaptively adjust the use state of child's bicycle according to the age size of children at home, use scene and other factors, make the height of seat assembly suitable for children to use. BRIEF DESCRIPTION OF DRAWINGS

[0048] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of the contents of the embodiments of the present application and the drawings.

[0049] Figure 1 is a structural schematic view of a two-wheeled scooter provided by the embodiment of the present application;

[0050] Figure 2 is a first structural schematic view of a two-wheeled bicycle provided by the embodiment of the present application;

[0051] Figure 3 is a second structural schematic view of a two-wheeled bicycle provided by the embodiment of the present application;

[0052] Figure 4 is a structural schematic view of a three-wheeled vehicle provided by the embodiment of the present application;

[0053] Figure 5 is a first structural schematic view of a four-wheeled vehicle provided by the embodiment of the present application;

[0054] Figure 6 is a second structural schematic view of a four-wheeled vehicle provided by the embodiment of the present application;

[0055] Figure 7 is a structural schematic view of a stroller provided by the embodiment of the present application.

[0056] In the drawings:

[0057] 1-frame; 2-seat assembly; 3-first wheel assembly; 4-second wheel assembly; 5-footrest assembly; 6-brake assembly; 7-seat; 8-push handle assembly; 9-fastener;

[0058] 11-handlebar; 12-front fork; 13-rear fork; 14-supporting rod; 15-first mounting portion; 16-second mounting portion;

[0059] 141-third mounting portion; 142-threading hole;

[0060] 21-seat body; 22-first fixed beam;

[0061] 31-first wheel; 32-first axle group; 33-second axle group; 34-fastener;

[0062] 331-first connecting shaft; 332-second connecting shaft; 333-rotation shaft;

[0063] 3311-first connecting part; 3321-second connecting part;

[0064] 41-second wheel; 42-third axle group; 43-fourth axle group;

[0065] 431-third connecting shaft; 432-limiting sleeve;

[0066] 51-foot pedal; 52-transmission mechanism; 53-protective shell;

[0067] 511-first mounting; 521-second sprocket; 522-chain;

[0068] 61-brake handle; 611-clamping part; 62-brake cable; 63-brake disc; 64-brake caliper;

[0069] 71-seat body; 72-second fixing beam; 73-backrest; 74-armrest;

[0070] 81-push rod; 82-push hand; 811-second mounting. DETAILED DESCRIPTION

[0071] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the embodiments of the utility model will be further described in detail below in combination with the drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0072] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0073] In the description of the utility model, it is to be explained that, unless another explicit provision and limitation, the term "installation", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirect connection through intermediate medium, can be the intercommunication of two elements inside. For ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according of the specific circumstances.

[0074] As Figures 1 to 7 Indicated, the utility model provides a baby carriage, can realize one car multi-purpose, and economic practicality is good. The baby carriage includes frame 1, seat component 2, first wheel component 3 and second wheel component 4.

[0075] Wherein, refer to Figure 1 And Figure 2 Frame 1 is provided with handlebar 11, and seat component 2 is detachably installed on frame 1. First wheel component 3 is detachably installed on the first end of frame 1, and second wheel component 4 is detachably installed on the second end of frame 1. The baby carriage has at least first use state and second use state, and the height of seat component 2 is different when the baby carriage is in first use state and second use state, or the height of seat component 2 is same. When using the baby carriage, the child rides on seat component 2, and holds handlebar 11 to ride the baby carriage.

[0076] The baby carriage provided by the embodiment has at least first use state and second use state, and the height of seat component 2 is different or same in different use states, so that the user can adaptively adjust the use state of the baby carriage according to the age of children at home, use scene and other factors, so that the height of seat component 2 is suitable for children to use. For example, when small children use, the baby carriage can be adjusted to the use state of lower seat component 2, and when middle-aged children use, the baby carriage can be adjusted to the use state of higher seat component 2, so as to meet the use requirements of children at different age stages, make the function of the baby carriage more diversified, do not need to purchase multiple types of baby carriages, are economic and practical, and improve the user experience.

[0077] Refer to Figure 1 And Figure 2 Frame 1 includes support rod 14, and seat component 2 is detachably installed on support rod 14. As Figure 1 Indicated, support rod 14 is provided with first mounting portion 15, seat component 2 is installed on first mounting portion 15 when the baby carriage is in first use state, and seat component 2 has first height. As Figure 2As shown, the support rod 14 is provided with the second mounting portion 16, and the seat assembly 2 is mounted on the second mounting portion 16 when the stroller is in the second use state, and the seat assembly 2 has a second height, and the first height is less than the second height. When the stroller is adjusted to the first use state, the height of the seat assembly 2 is lower, which is suitable for small children. When the stroller is adjusted to the second use state, the height of the seat assembly 2 is higher, which is suitable for middle-aged children, older children and the like.

[0078] Optionally, the support rod 14 extends in an arc shape, as Figure 1 As shown, when the stroller is in the first use state, the arc convex surface of the support rod 14 faces downward. As Figure 2 As shown, when the stroller is in the second use state, the arc convex surface of the support rod 14 faces upward. When the support rod 14 is assembled with the arc convex surface facing downward in the first use state, the height of the seat assembly 2 is lower after being mounted on the support rod 14, which is convenient for small children to ride the stroller. When the support rod 14 is assembled with the arc convex surface facing upward in the second use state, the height of the seat assembly 2 is higher after being mounted on the support rod 14, which is convenient for middle-aged children and older children to ride.

[0079] As shown in Figure 4 and Figure 5 , when the stroller is in the corresponding use state, the arc convex surface of the support rod 14 faces upward, and the mounting height of the seat assembly 2 is higher, which is convenient for middle-aged children and older children to ride.

[0080] Optionally, referring to Figure 1 and Figure 2 , the support rod 14 has oppositely arranged first and second faces in a preset direction, the first mounting portion 15 is arranged on the first face, and the second mounting portion 16 is arranged on the second face. Exemplarily, the preset direction is the up-down direction, and in Figure 1 , the first face is the upper surface of the support rod 14, and the second face is the lower surface of the support rod 14. In Figure 2 , the first face is the lower surface of the support rod 14, and the second face is the upper surface of the support rod 14.

[0081] In the embodiment, the first mounting portion 15 and the second mounting portion 16 are an integral structure in a tubular shape, and the whole thereof penetrates the support rod 14. In other embodiments, the first mounting portion 15 and the second mounting portion 16 can also be a split structure, and the first mounting portion 15 and the second mounting portion 16 can be arranged in a staggered manner or in a directly opposite manner.

[0082] In some other embodiments, the design may also be such that the first mounting portion 15 is disposed opposite to the second mounting portion 16 in a predetermined direction, and both the first mounting portion 15 and the second mounting portion 16 include a mounting groove that extends through the support rod 14 in a predetermined direction. That is, the first mounting portion 15 and the second mounting portion 16 are the same mounting groove that extends through the support rod 14, and the seat assembly 2 can be at least partially inserted and fixed in the mounting groove.

[0083] Optionally, the frame 1 includes a connecting assembly and a support rod 14. A first end of the support rod 14 is detachably connected to the connecting assembly, a first wheel assembly 3 is detachably connected to the connecting assembly, and a second end of the support rod 14 is detachably mounted to a second wheel assembly 4. This detachable design facilitates adjustment of the mounting position of the support rod 14 according to usage requirements. Specifically, for example… Figure 1 and Figure 2 As shown, Figure 1 The support rod 14 in the middle has its arc-shaped convex surface facing downwards. When it is necessary to adjust the stroller to... Figure 2 When in use, the support rod 14 can be disassembled from the connecting component, the first wheel assembly 3, and the second wheel assembly 4. The support rod 14 can be flipped so that the arc-shaped convex surface of the support rod 14 faces upward. Then the support rod 14 can be reassembled with the connecting component, the first wheel assembly 3, and the second wheel assembly 4. The usage state of the stroller can be switched according to actual needs.

[0084] See Figure 1 and Figure 2 The first end of the support rod 14 is provided with a third mounting portion 141, and the connecting component is detachably connected to the third mounting portion 141 to realize the assembly and disassembly of the support rod 14 and the connecting component. Further, the third mounting portion 141 is sleeve-shaped, and the connecting component at least partially passes through and connects to the sleeve-shaped third mounting portion 141. Of course, in other embodiments, the third mounting portion 141 may not be sleeve-shaped, as long as it can install and fix the connecting component.

[0085] Specifically, the connecting assembly includes a handlebar 11 and a front fork 12 connected together. The first wheel assembly 3 is detachably connected to the front fork 12. The handlebar 11 is rotatably connected to the third mounting part 141, and the direction of travel of the children's bicycle can be adjusted by rotating the handlebar 11. A rear fork 13 is provided at the second end of the support rod 14, and the second wheel assembly 4 is detachably installed to the rear fork 13. After the first wheel assembly 3 and the second wheel assembly 4 are installed on the front fork 12 and the rear fork 13 respectively, the children's bicycle can be used normally.

[0086] Optionally, at least one of the first wheel assembly 3 and the second wheel assembly 4 can be detachably mounted to the frame 1. That is, the stroller can be designed such that only the first wheel assembly 3 can be detachably mounted to the frame 1, or only the second wheel assembly 4 can be detachably mounted to the frame 1, or both the first wheel assembly 3 and the second wheel assembly 4 can be detachably mounted to the frame 1.

[0087] Optionally, the first wheel assembly 3 comprises a plurality of first wheels 31, and the second wheel assembly 4 comprises a plurality of second wheels 41, and the child car can be assembled by the user according to the actual use requirements. Specifically, when one first wheel 31 is installed at the first end of the frame 1 and one second wheel 41 is installed at the second end of the frame 1, the child car can be used as a two-wheeled scooter or bicycle; when one first wheel 31 is installed at the first end of the frame 1 and two second wheels 41 are installed at the second end of the frame 1, the child car can be used as a three-wheeled car; when two first wheels 31 are installed at the first end of the frame 1 and two second wheels 41 are installed at the second end of the frame 1, the child car can be used as a four-wheeled car. That is, the user can adaptively assemble the child car into a two-wheeled car, a three-wheeled car or a four-wheeled car according to the age of the child at home, the use scene and other factors, to meet the use requirements of children at different age stages, so that the child car is more diversified in function, does not need to purchase multiple types of child cars, is economical and practical, and improves the user experience.

[0088] In this embodiment, for example, the child car is a two-wheeled bicycle, the frame 1 can be designed to be detachable only with the second wheel assembly 4, and only the second wheel assembly 4 is replaced on the basis of the two-wheeled bicycle, that is, the second wheel assembly 4 is replaced by two second wheels 41, so that the child car can be changed into a three-wheeled car for use.

[0089] For example, the child car is a three-wheeled car, the frame 1 can be designed to be detachable only with the first wheel assembly 3, and only the first wheel assembly 3 is replaced, that is, the first wheel assembly 3 is replaced by two first wheels 31, so that the child car can be changed into a four-wheeled car for use.

[0090] For example, the child car is a two-wheeled bicycle, the frame 1 can be designed to be detachable only with the first wheel assembly 3 and the second wheel assembly 4, and the first wheel assembly 3 and the second wheel assembly 4 are respectively replaced by two first wheels 31 and two second wheels 41, so that the child car can be changed into a four-wheeled car for use.

[0091] The different use states of the child car are introduced below with reference to Embodiment One to Embodiment Five.

[0092] Embodiment One

[0093] As Figure 1As shown, the present embodiment provides a stroller in a first use state. The first wheel assembly 3 comprises a first wheel axle group 32 and a first wheel 31, and the first end of the frame 1 is provided with a front fork 12, and the first wheel 31 is rotatably connected to the front fork 12 through the first wheel axle group 32. The second wheel assembly 4 comprises a third wheel axle group 42 and a second wheel 41, and the second end of the frame 1 is provided with a rear fork 13, and the second wheel 41 is rotatably connected to the rear fork 13 through the third wheel axle group 42. That is, a first wheel 31 is installed on the front fork 12 of the frame 1, and a second wheel 41 is installed on the rear fork 13 of the frame 1, so that the stroller can be used as a scooter, which can be used by children aged two to six.

[0094] In the present embodiment, the support rod 14 of the frame 1 extends in an arc shape, and the arc convex surface of the support rod 14 faces downward.

[0095] Exemplarily, the first wheel axle group 32 comprises a first mounting shaft coaxially arranged on the hub of the first wheel 31, the first wheel 31 is located between the two fork arms of the front fork 12, and the two ends of the first mounting shaft are connected with the two fork arms of the front fork 12 respectively, thereby realizing the rotatable connection between the first wheel 31 and the front fork 12.

[0096] Further, the third wheel axle group 42 comprises a second mounting shaft coaxially arranged on the hub of the second wheel 41, the second wheel 41 is located between the two fork arms of the rear fork 13, and the two ends of the second mounting shaft are connected with the two fork arms of the rear fork 13 respectively, thereby realizing the rotatable connection between the second wheel 41 and the rear fork 13.

[0097] Optionally, referring to Figure 1 , the frame 1 is provided with a mounting structure, and the seat assembly 2 comprises a seat body 21 and a first fixing beam 22 arranged on the seat body 21, and the first fixing beam 22 can be detachably fixed to the mounting structure by the fastener 9. The seat body 21 is used to provide a seating basis for children, and the overall disassembly and assembly of the seat assembly 2 on the frame 1 can be realized by disassembling and assembling the fastener 9, and the assembly operation is simple.

[0098] In the present embodiment, the mounting structure is a first mounting portion 15 arranged on the support rod 14 of the frame 1, the first mounting portion 15 is located on the first surface of the support rod 14, the seat assembly 2 is mounted on the first mounting portion 15, and the seat assembly 2 has a first height.

[0099] Exemplarily, the first mounting portion 15 is a seat tube arranged on the support rod 14 of the frame 1, the seat tube can be welded and fixed on the support rod 14 or integrally formed on the support rod 14, the first fixing beam 22 is movably arranged in the seat tube, and the fastener 9 is a first seat tube clamp. When the height position of the first fixing beam 22 in the seat tube is adjusted, the first seat tube clamp can be tightened to complete the fastening operation, so that the seat assembly 2 is firmly fixed to the frame 1.

[0100] Embodiment Two

[0101] As shown in Figure 2 and Figure 3 , the present embodiment provides a baby carriage in the second use state, which is different from the first embodiment in that:

[0102] Optionally, the first wheel assembly 3 comprises a first axle assembly 32 and a first wheel 31, and the first end of the frame 1 is provided with a front fork 12, and the first wheel 31 is rotatably connected to the front fork 12 through the first axle assembly 32. The second wheel assembly 4 comprises a third axle assembly 42 and a second wheel 41, and the second end of the frame 1 is provided with a rear fork 13, and the second wheel 41 is rotatably connected to the rear fork 13 through the third axle assembly 42. Further, the baby carriage further comprises a pedal assembly 5 and a brake assembly 6, the pedal assembly 5 is detachably mounted on the frame 1 and is in driving connection with the second wheel assembly 4, and the second wheel assembly 4 can be driven to rotate by the pedal assembly 5, thereby driving the baby carriage to move. The brake assembly 6 is detachably mounted between the handlebar 11 and the second wheel assembly 4, and is used to adjust the rotating speed of the second wheel 41, thereby controlling the moving speed of the baby carriage.

[0103] That is, a first wheel 31 is installed on the front fork 12 of the frame 1, a second wheel 41 is installed on the rear fork 13 of the frame 1, and a pedal assembly 5 and a brake assembly 6 are installed on the frame 1, so that the baby carriage can be used as a bicycle.

[0104] In the present embodiment, the support rod 14 of the frame 1 extends in an arc shape, and the arc convex surface of the support rod 14 faces upward.

[0105] Optionally, referring to Figure 3 and Figure 4 , the pedal assembly 5 comprises a pedal 51 and a transmission mechanism 52, the pedal 51 is mounted on the frame 1, one end of the transmission mechanism 52 is in driving connection with the pedal 51, and the other end is in driving connection with the second wheel assembly 4. The pedal 51 is rotatably mounted on the frame 1 by a crank, when the pedal 51 is driven to rotate, the pedal 51 drives the second wheel assembly 4 to rotate through the transmission mechanism 52, thereby driving the baby carriage to move.

[0106] Optionally, referring to Figure 3 and in combination with Figure 4 , the transmission mechanism 52 comprises a first sprocket, a second sprocket 521 and a chain 522, the first sprocket is coaxially connected with the rotating shaft of the pedal 51, the second sprocket 521 is coaxially connected with the rotating shaft of the second wheel assembly 4, and the chain 522 is in meshing transmission with the first sprocket and the second sprocket 521. When the pedal 51 is driven to rotate by the foot, the pedal 51 synchronously rotates with the first sprocket, the first sprocket in turn drives the second sprocket 521 to rotate through the chain 522, the second sprocket 521 synchronously rotates with the second wheel assembly 4, thereby realizing the pedal driving of the baby carriage to move.

[0107] Further, the pedal assembly 5 further comprises a guard shell 53 covering the transmission mechanism 52, the guard shell 53 can protect the first sprocket, the second sprocket 521 and the chain 522, prevent the chain 522 from being separated from the first sprocket and the second sprocket 521 during riding, and prevent sundries from entering the first sprocket, the second sprocket 521 and the chain 522, thereby prolonging the service life of the transmission mechanism 52; at the same time, the guard shell 53 can also isolate the transmission mechanism 52 from the user, thereby improving the safety of the use of the bicycle.

[0108] Optionally, referring to Figure 1 and Figure 2 , the frame 1 is provided with a mounting structure, the seat assembly 2 comprises a seat body 21 and a first fixing beam 22 provided on the seat body 21, the first fixing beam 22 can be detachably fixed to the mounting structure by the fastener 9, and the overall disassembly of the seat assembly 2 on the frame 1 can be realized by disassembling the fastener 9. The pedal 51 is provided with a first mounting piece 511, which can be detachably mounted on the first fixing beam 22 or the mounting structure. When the bicycle is assembled, the pedal 51 can be fixed on the first fixing beam 22 or the mounting structure through the first mounting piece 511.

[0109] In this embodiment, the mounting structure comprises a second mounting portion 16 provided on the support rod 14 of the frame 1, the second mounting portion 16 is located on the second surface of the support rod 14, the seat assembly 2 is mounted on the second mounting portion 16, and the seat assembly 2 has a second height, which is greater than the first height.

[0110] Exemplarily, the second mounting portion 16 is a seat tube provided on the support rod 14 of the frame 1, the first fixing beam 22 is movably arranged in the seat tube, and the fastener 9 is a first seat tube clamp. After the first seat tube clamp is fastened, the first fixing beam 22 can be locked and fixed on the seat tube. Further, the pedal 51 is fixed on one end of the first fixing beam 22 extending out of the seat tube, the first mounting piece 511 is exemplarily a second seat tube clamp, the pedal 51 comprises a pedal plate and a connecting sleeve, the pedal plate is rotationally connected with the connecting sleeve, the second seat tube clamp is arranged on the connecting sleeve, the connecting sleeve can be sleeved on the first fixing beam 22, and the pedal 51 can be fixed firmly by fastening the connecting sleeve and the first fixing beam 22 through the second seat tube clamp.

[0111] In other embodiments, the mounting structure can further comprise a first mounting portion 15 provided on the first surface of the support rod 14, and the first mounting piece 511 can be directly fixed on the first mounting portion 15, for example, the first mounting portion 15 is a seat tube, and the first mounting piece 511 is a second seat tube clamp, which can be fastened on the seat tube.

[0112] Optionally, referring to Figure 2The brake assembly 6 comprises a brake handle 61, a brake wire 62, a brake disc 63 and a brake caliper 64. The brake disc 63 is coaxially installed with the second wheel 41. The brake handle 61 is installed on the handlebar 11. The brake caliper 64 is installed on the brake disc 63. One end of the brake wire 62 is connected with the brake handle 61, and the other end of the brake wire 62 is connected with the brake caliper 64. When the brake handle 61 is squeezed, the brake wire 62 is pulled tight, and the brake caliper 64 is driven to clamp the brake disc 63. The brake disc 63 is in frictional contact with the second wheel 41, so that the braking force is generated to realize the brake function. After the brake handle 61 is released, the brake wire 62 is released, the brake caliper 64 releases the brake disc 63, and the second wheel 41 can rotate again. The opening and closing degree of the brake handle 61 can be controlled to control the braking force.

[0113] Exemplarily, the brake wire 62 is a steel wire or a nylon rope. The brake handle 61 is provided with a clamping portion 611. The brake handle 61 is fixed on the handlebar 11 through the clamping portion 611, so that the user can reasonably control the brake force.

[0114] Further, the support rod 14 of the frame 1 is in a tubular structure. The frame 1 is provided with a threading hole 142. The brake wire 62 is threaded through the threading hole 142 and hidden in the support rod 14 in the tubular structure. The wiring is reasonable, and the appearance of the child's car is more tidy.

[0115] Embodiment Three

[0116] The embodiment provides a child's car. The child's car is defined in a third use state. The difference between the child's car and the child's cars in the embodiments one and two is that:

[0117] Optionally, referring to Figure 4 The first wheel assembly 3 comprises a first wheel shaft group 32 and a first wheel 31. The first end of the frame 1 is provided with a front fork 12. The first wheel 31 is rotatably connected to the front fork 12 through the first wheel shaft group 32. The second wheel assembly 4 comprises a fourth wheel shaft group 43 and two second wheels 41. The second end of the frame 1 is provided with a rear fork 13. The fourth wheel shaft group 43 is rotatably connected with the rear fork 13. The two second wheels 41 are coaxially installed on the two ends of the fourth wheel shaft group 43. That is, one first wheel 31 is installed on the front fork 12 of the frame 1, and two second wheels 41 are installed on the rear fork 13 of the frame 1, so that the child's car can be used as a tricycle.

[0118] In the embodiment, the support rod 14 of the frame 1 extends in an arc shape, and the arc convex surface of the support rod 14 faces upward. The setting height of the seat assembly 2 is basically the same as that in the embodiment two, and the setting height of the seat assembly 2 is greater than that in the embodiment one.

[0119] Further, the stroller further comprises a pedal assembly 5 and a brake assembly 6. The pedal assembly 5 is detachably mounted on the frame 1 and is in driving connection with the second wheel assembly 4. The pedal assembly 5 can drive the second wheel assembly 4 to rotate, thereby driving the stroller to move. The brake assembly 6 is detachably mounted between the handlebar 11 and the second wheel assembly 4, and is used to adjust the rotating speed of the second wheel 41, thereby controlling the moving speed of the stroller. The pedal assembly 5 and the brake assembly 6 have the same structure as those of the second embodiment, and thus will not be described herein again.

[0120] Optionally, referring to Figure 4 , the fourth axle assembly 43 comprises a third connecting shaft 431 and a limiting sleeve 432 coaxially arranged on the third connecting shaft 431. The third connecting shaft 431 is connected with the rear fork 13. The brake disc 63 of the brake assembly 6 is coaxially arranged on the third connecting shaft 431 and located between the two fork arms of the rear fork 13. The limiting sleeve 432 is located between the brake disc 63 and the fork arms of the rear fork 13. When the brake handle 61 is squeezed, the brake wire 62 is pulled tight, the brake wire 62 pulls the brake caliper 64 to clamp the brake disc 63, the brake disc 63 is in contact with the limiting sleeve 432, thereby generating a braking force, so that the rotating speed of the third connecting shaft 431 is slowed down or stopped, thereby realizing the brake function. After the brake handle 61 is released, the brake wire 62 is relaxed, the brake caliper 64 releases the brake disc 63, and the third connecting shaft 431 can resume rotating. The limiting sleeve 432 is arranged to directly brake the third connecting shaft 431 by the brake disc 63, thereby simultaneously braking and slowing down the two second wheels 41.

[0121] Further, the second sprocket 521 of the transmission mechanism 52 is coaxially mounted on the third connecting shaft 431, and the second sprocket 521 is located between the limiting sleeve 432 and the fork arms of the rear fork 13. When the pedal 51 is driven to rotate by the foot, the pedal 51 drives the first sprocket to rotate synchronously, the first sprocket drives the second sprocket 521 and the third connecting shaft 431 to rotate synchronously through the chain 522, thereby realizing synchronous driving of the two second wheels 41 to rotate synchronously, and improving the moving stability of the stroller.

[0122] Embodiment Four

[0123] The present embodiment provides a stroller. The stroller is defined in a fourth use state, which is different from the first embodiment, the second embodiment and the third embodiment in that:

[0124] Optionally, referring to Figure 5 and Figure 6, the first wheel assembly 3 comprises a second axle group 33 and two first wheels 31, the first end of the frame 1 is provided with a front fork 12, the second axle group 33 is rotatably connected with the front fork 12, and the two first wheels 31 are coaxially installed at two ends of the second axle group 33 respectively. The second wheel assembly 4 comprises a fourth axle group 43 and two second wheels 41, the second end of the frame 1 is provided with a rear fork 13, the fourth axle group 43 is rotatably connected with the rear fork 13, and the two second wheels 41 are coaxially installed at two ends of the fourth axle group 43 respectively. That is, the two first wheels 31 are installed on the front fork 12 of the frame 1, and the two second wheels 41 are installed on the rear fork 13 of the frame 1, so that the child bicycle can be used as a four-wheeled bicycle.

[0125] In the embodiment, the support rod 14 of the frame 1 extends in an arc shape, and the arc convex surface of the support rod 14 faces upward. The setting height of the seat assembly 2 is basically the same as that of the second embodiment, and the setting height of the seat assembly 2 is greater than that of the first embodiment.

[0126] Optionally, referring to Figure 5 and Figure 6 , the second axle group 33 comprises a first connecting shaft 331 and a second connecting shaft 332 rotatably connected, the first connecting shaft 331 is connected with the front fork 12, and the two ends of the second connecting shaft 332 are connected with the two first wheels 31 respectively. Specifically, the two ends of the first connecting shaft 331 are connected with the two fork arms of the front fork 12 respectively, and since the first connecting shaft 331 is rotatably connected with the second connecting shaft 332, the front fork 12 of the frame 1 and the first wheel assembly 3 can be relatively rotated, and the steering of the two first wheels 31 can be adjusted by twisting the handlebar 11, so as to realize the steering function of the child bicycle.

[0127] Further, referring to Figure 5 and Figure 6 , the first connecting shaft 331 is provided with a first connecting part 3311, the second connecting shaft 332 is provided with a second connecting part 3321, the first connecting part 3311 and the second connecting part 3321 are rotatably connected through a rotating shaft 333, and the extension direction of the rotating shaft 333 is perpendicular to the extension direction of the second connecting shaft 332. In this way, the rotation of the first wheel assembly 3 will not be interfered when the handlebar 11 is twisted for operation, so that the movement of the child bicycle is more stable.

[0128] Optionally, the child bicycle further comprises a pedal assembly 5 and a brake assembly 6, the pedal assembly 5 is detachably installed on the frame 1 and is in transmission connection with the second wheel assembly 4, the second wheel assembly 4 can be driven to rotate by the pedal assembly 5, so as to drive the child bicycle to move. The brake assembly 6 is detachably installed between the handlebar 11 and the second wheel assembly 4, and is used for adjusting the rotating speed of the second wheel 41, so as to control the moving speed of the child bicycle. The specific structures of the pedal assembly 5 and the brake assembly 6 are the same as those of the pedal assembly 5 and the brake assembly 6 of the second embodiment, and will not be described here.

[0129] Optionally, referring to Figure 5 , the fourth axle group 43 comprises a third connecting shaft 431 and a limiting sleeve 432 coaxially arranged on the third connecting shaft 431, the third connecting shaft 431 is connected with the rear fork 13, the brake disc 63 of the brake assembly 6 is coaxially arranged on the third connecting shaft 431 and located between the two fork arms of the rear fork 13, and the limiting sleeve 432 is located between the brake disc 63 and the fork arms of the rear fork 13. When the brake handle 61 is pinched, the brake wire 62 is pulled tight, the brake wire 62 pulls the brake caliper 64 to clamp the brake disc 63, the brake disc 63 is in frictional contact with the limiting sleeve 432, thereby generating a braking force, slowing down or stopping the rotation of the third connecting shaft 431, and realizing the brake function. The arrangement of the limiting sleeve 432 can realize direct braking of the third connecting shaft 431 by the brake disc 63, thereby simultaneously braking and slowing down the two second wheels 41.

[0130] Further, the second sprocket 521 of the transmission mechanism 52 is coaxially installed on the third connecting shaft 431, and the second sprocket 521 is located between the limiting sleeve 432 and the fork arms of the rear fork 13. When the foot pedal 51 is driven to rotate by the foot, the foot pedal 51 drives the first sprocket to rotate synchronously, and the first sprocket drives the second sprocket 521 and the third connecting shaft 431 to rotate synchronously through the chain 522, thereby realizing synchronous driving of the two second wheels 41 to rotate synchronously and improving the moving stability of the child stroller.

[0131] Example five

[0132] The present embodiment provides a child stroller, which is defined in a fifth use state, and the difference from the first embodiment is that:

[0133] Optionally, referring to Figure 7 , the first wheel assembly 3 comprises a first axle group 32, a fixing member 34, and a first wheel 31, the first end of the frame 1 is provided with a front fork 12, the first wheel 31 is rotatably connected to one end of the fixing member 34 through the first axle group 32, and the other end of the fixing member 34 is rotatably connected to the front fork 12. The second wheel assembly 4 comprises a fourth axle group 43 and two second wheels 41, the second end of the frame 1 is provided with a rear fork 13, the fourth axle group 43 is rotatably connected with the rear fork 13, and the two second wheels 41 are coaxially installed on the two ends of the fourth axle group 43. Further, the seat assembly 2 further comprises a seat 7 and a push handle assembly 8, the seat 7 is detachably installed on the frame 1, and the push handle assembly 8 is detachably installed on the frame 1 or the seat 7. The seat 7 is used to provide a seating space for children, and the push handle assembly 8 can be used to push the stroller to move.

[0134] That is, a first wheel 31 is installed on the front fork 12 of the frame 1, two second wheels 41 are installed on the rear fork 13 of the frame 1, and the seat assembly 2 on the frame 1 is replaced by a seat 7, so that the child stroller can be used as a child stroller, which is suitable for children of a smaller age group.

[0135] Since one end of the fixing member 34 is rotatably connected to the first wheel 31 through the first wheel shaft set 32, and the other end of the fixing member 34 is rotatably connected to the front fork 12, the first wheel 31 can form a structure similar to a universal wheel, and can be flexibly steered during the movement of the stroller by pushing the handle set 8.

[0136] Exemplarily, referring to the orientation in Figure 7 , the first wheel shaft set 32 is located at the rear side of the rotatable connection point of the fixing member 34 and the front fork 12, and a righting moment is generated to the first wheel 31 during the rotation of the first wheel 31 around the first wheel shaft set 32, preventing the first wheel 31 from rotating too fast and improving the steering stability.

[0137] In the embodiment, the support rod 14 of the frame 1 extends in an arc shape, and the arc convex surface of the support rod 14 faces upward. The setting height of the seat 7 is greater than the height of the seat set 2 in the first embodiment.

[0138] Optionally, referring to Figure 7 , the fourth wheel shaft set 43 includes a third connecting shaft 431, the third connecting shaft 431 is connected with the rear fork 13, and two second wheels 41 are respectively installed at two ends of the third connecting shaft 431. Further, when the stroller is assembled into a stroller, the pedal set 5 and the brake set 6 in the above-mentioned third embodiment can be omitted.

[0139] Optionally, referring to Figure 7 and combining Figure 1 , the frame 1 is provided with a mounting structure, the seat 7 includes a seat body 71 and a second fixing beam 72 provided on the seat body 71, and the second fixing beam 72 can be detachably fixed to the mounting structure through the fastener 9. The overall disassembly and assembly of the seat 7 on the frame 1 can be realized by disassembling and assembling the fastener 9, and the assembly operation is simple.

[0140] In the embodiment, the mounting structure includes a second mounting portion 16 provided on the support rod 14 of the frame 1, and the second mounting portion 16 is located on the second surface of the support rod 14. The second fixing beam 72 of the seat 7 is fixed to the second mounting portion 16.

[0141] In other embodiments, the mounting structure includes a mounting groove provided on the support rod 14, the mounting groove penetrates the support rod 14 from top to bottom, and the second fixing beam 72 is inserted and fixed in the mounting groove.

[0142] Exemplarily, the second mounting portion 16 is a seat tube provided on the frame 1, the seat tube can be welded and fixed to the frame 1 or integrally formed on the frame 1, the second fixing beam 72 is movably inserted in the seat tube, and the fastener 9 is a first seat tube clamp. When the height position of the second fixing beam 72 in the seat tube is adjusted, the fastening operation can be completed by tightening the first seat tube clamp, so that the seat 7 is firmly fixed to the frame 1.

[0143] Further, the seat 7 further comprises a backrest 73 and an armrest 74 arranged on the seat body 71, so that the child can lean on the backrest 73 after being seated on the seat body 71, and the backrest 73 and the armrest 74 cooperate to provide protection for the child, prevent the child from falling, and improve the safety of the stroller.

[0144] Optionally, referring to Figure 7 , the push handle assembly 8 comprises a push rod 81, and the push rod 81 is provided with a second mounting member 811 which is detachably mounted on the seat body 71. Before assembling the stroller, the push handle assembly 8 can be assembled with the seat 7 first, and then the second mounting beam of the seat 7 is connected and fixed with the frame 1, so that the assembly process of the stroller can be simplified.

[0145] Illustratively, the second mounting member 811 is a U-shaped arm integrally formed on the end of the push rod 81, and the U-shaped arm is detachably fixed on the seat body 71 by a bolt or the like fixing member.

[0146] In other embodiments, the push rod 81 of the push handle assembly 8 can also be mounted and fixed on the frame 1, and the same effect of moving the stroller can also be achieved.

[0147] Further, referring to Figure 7 , the push handle assembly 8 further comprises a push handle 82 arranged on the end of the push rod 81 away from the seat body 71, so that the user can hold the push handle 82 to push the stroller, and it is easier to exert force. Further, the push rod 81 is a telescopic rod, and the length thereof is adjustable, so that it can be adaptively adjusted according to users of different heights, and the universality is good.

[0148] It should be noted that the above are only preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the protection scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A stroller, characterized in that, The child stroller comprises: a frame provided with a handlebar; a seat assembly detachably mounted on the frame; a first wheel assembly mounted on a first end of the frame; a second wheel assembly mounted on a second end of the frame; the child stroller has at least a first use state and a second use state, and the height of the seat assembly is different or the same in the first use state and the second use state.

2. The stroller of claim 1, wherein, The frame comprises a support rod, and the seat assembly is detachably mounted on the support rod. The support rod is provided with a first mounting portion, and the seat assembly is mounted on the first mounting portion in the first use state, and the seat assembly has a first height. The support rod is provided with a second mounting portion, and the seat assembly is mounted on the second mounting portion in the second use state, and the seat assembly has a second height, and the first height is less than the second height.

3. The stroller of claim 2, wherein, The support rod has oppositely arranged first and second faces in a preset direction, the first mounting portion is arranged on the first face, and the second mounting portion is arranged on the second face; and / or The first mounting portion is oppositely arranged with the second mounting portion in the preset direction, and the first mounting portion and the second mounting portion each comprise a mounting slot penetrating through the support rod along the preset direction. The support rod extends in an arc shape, the arc convex surface of the support rod faces downward in the first use state, and the arc convex surface of the support rod faces upward in the second use state. The frame comprises a connecting assembly and a support rod, a first end of the support rod is detachably connected with the connecting assembly, the first wheel assembly is detachably connected with the connecting assembly, and a second end of the support rod is detachably mounted with the second wheel assembly.

4. The stroller of claim 1, wherein, A third mounting portion is arranged on the first end of the support rod, and the connecting assembly is detachably connected with the third mounting portion.

5. The stroller of claim 4, wherein, The third mounting portion is in a sleeve shape; and / or The connecting assembly comprises the handlebar and a front fork connected with the handlebar, the first wheel assembly is detachably connected with the front fork, and the handlebar is rotationally connected with the third mounting portion; and / or A rear fork is arranged on the second end of the support rod, and the second wheel assembly is detachably mounted with the rear fork. At least one of the first wheel assembly and the second wheel assembly is detachably mounted on the frame.

6. The stroller of claim 1, wherein, The first wheel assembly is detachably mounted on the first end of the frame. The first wheel assembly comprises a plurality of first wheels. The first wheel assembly comprises a first wheel shaft group and one first wheel, a front fork is arranged on the first end of the frame, and the first wheel is rotationally connected with the front fork through the first wheel shaft group; or The first wheel assembly comprises a second wheel shaft group and two first wheels, a front fork is arranged on the first end of the frame, the second wheel shaft group is rotationally connected with the front fork, and the two first wheels are coaxially mounted on two ends of the second wheel shaft group, respectively; or The first wheel assembly comprises a third wheel shaft group and three first wheels, a front fork is arranged on the first end of the frame, the third wheel shaft group is rotationally connected with the front fork, and the three first wheels are coaxially mounted on three ends of the third wheel shaft group, respectively. The first wheel assembly comprises a first axle group, a fixing member and one first wheel, the first end of the frame is provided with a front fork, the first wheel is rotatably connected to one end of the fixing member through the first axle group, and the other end of the fixing member is rotatably connected to the front fork.

7. The stroller of claim 6, wherein, The second axle group comprises a first connecting shaft and a second connecting shaft which are rotatably connected, the first connecting shaft is connected with the front fork, and the two ends of the second connecting shaft are respectively connected with two first wheels. The first connecting shaft is provided with a first connecting part, the second connecting shaft is provided with a second connecting part, the first connecting part and the second connecting part are rotatably connected through a rotating shaft, and the extension direction of the rotating shaft is perpendicular to the extension direction of the second connecting shaft.

8. The stroller of claim 1, wherein, At least one of the first wheel assembly and the second wheel assembly is detachably mounted on the frame. The second wheel assembly is detachably mounted on the second end of the frame. The second wheel assembly comprises a plurality of second wheels. The second wheel assembly comprises a third axle group and one second wheel, the second end of the frame is provided with a rear fork, and the second wheel is rotatably connected to the rear fork through the third axle group; or The second wheel assembly comprises a fourth axle group and two second wheels, the second end of the frame is provided with a rear fork, the fourth axle group is rotatably connected with the rear fork, and the two second wheels are coaxially mounted on the two ends of the fourth axle group respectively.

9. The stroller of claim 1, wherein, The child bicycle further comprises: A footrest assembly which is detachably mounted on the frame, the footrest assembly is in transmission connection with the second wheel assembly, and is used for driving the second wheel assembly to rotate; A brake assembly which is detachably mounted between the handlebar and the second wheel assembly, and is used for adjusting the rotating speed of the second wheel; The frame is provided with a mounting structure, the seat assembly comprises a seat body and a first fixing beam arranged on the seat body, and the first fixing beam can be detachably fixed to the mounting structure through fasteners; The footrest is provided with a first mounting member, and the first mounting member is detachably mounted on the first fixing beam or the mounting structure.

10. The stroller of claim 1, wherein, The seat assembly further comprises a seat and a handlebar assembly, the seat is detachably mounted on the frame, and the handlebar assembly is detachably mounted on the frame or the seat; The frame is provided with a mounting structure, the seat comprises a seat body and a second fixing beam arranged on the seat body, and the second fixing beam can be detachably fixed to the mounting structure through fasteners; The handlebar assembly comprises a push rod, the push rod is provided with a second mounting member, and the second mounting member is detachably mounted on the seat body.

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