Baby carriage

Abstract

The invention relates to a baby carriage which comprises a support, a wheel assembly arranged on the lower portion of the support, an orientation mechanism movably arranged on the support and a driving mechanism, the driving mechanism at least comprises a driving piece, the driving piece is movably connected with the support, and the driving piece is provided with an abutting portion and a receding portion. In the process that the switching piece is switched from abutting against the abutting portion to being matched with the receding portion, the position of the switching piece is switched on the support, and the wheel assembly is correspondingly switched from the directional state to the universal state.

Description

Technical Field

[0001] The present invention relates to the field of children's carrying products, and in particular to a baby carriage. Background Art

[0002] A stroller typically includes a frame and a wheel assembly mounted at the bottom of the frame. To meet diverse user needs, the wheel assembly is typically configured to switch between a universal state and a fixed state. In the universal state, the wheel assembly freely rotates relative to the frame for easy steering, while in the fixed state, the wheel assembly is fixed relative to the frame, maintaining a fixed orientation. While some strollers in the prior art utilize a push rod to switch wheel assembly states, their structures vary, and most are relatively complex. Summary of the Invention

[0003] An object of the present invention is to provide a baby carriage to solve one or more problems of the prior art.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A baby carriage, comprising:

[0006] Bracket;

[0007] a wheel assembly disposed at the lower portion of the bracket, the wheel assembly being configured to be convertible between a universal state and a directional state, wherein the wheel assembly comprises a wheel seat and a wheel body disposed on the wheel seat, wherein when the wheel assembly is in the universal state, the wheel seat is capable of rotating relative to the bracket about a steering axis; and when the wheel assembly is in the directional state, the wheel seat is fixed relative to the bracket;

[0008] an orientation mechanism movably disposed on the bracket, the orientation mechanism being capable of being coupled or releasably connected to the wheel assembly so as to switch the wheel assembly between the orientation state and the universal state, the orientation mechanism comprising at least a conversion member, the conversion member having a first position and a second position on the bracket, wherein when the conversion member is in the first position, the wheel assembly is in the orientation state; and when the conversion member is in the second position, the wheel assembly is in the universal state;

[0009] A driving mechanism, comprising at least a driving member, wherein the driving member is movably connected to the bracket;

[0010] Wherein, the driving member is provided with a supporting portion and a yielding portion. When the conversion member is converted from abutting against the supporting portion to cooperating with the yielding portion, the conversion member switches between the first position and the second position.

[0011] Preferably, the driving member rotates relative to the bracket around the rotation center line, the abutment portion and the yielding portion are arranged as a whole along the circumference of the rotation center line, and the distance between the abutment portion and the rotation center line is different from the distance between the yielding portion and the rotation center line.

[0012] In some embodiments, the yield portion includes a avoidance groove recessed relative to the abutting portion toward the rotation center line; when the conversion member is in the first position, the conversion member abuts against the abutting portion; when the conversion member is in the second position, the conversion member is positioned in the avoidance groove.

[0013] In some embodiments, the opening size of the avoidance groove is set to gradually increase from the bottom to the outside to form a guide portion on the side wall of the avoidance groove; in the process of the conversion member moving from the yield portion to the abutment portion, the guide portion and the conversion member cooperate with each other to provide guidance for the conversion member.

[0014] In some embodiments, the bracket includes a rod body and a transfer seat fixed on the rod body, the transfer seat has a mounting cavity, the driving member is accommodated in the mounting cavity and can be rotatably connected to the transfer seat around the rotation center line;

[0015] The adapter seat is also provided with a connecting hole, and the installation cavity is connected to the rod cavity of the rod body through the connecting hole. The conversion member can be arranged in the rod cavity for translational movement along the length extension direction of the rod body, and the conversion member can pass through the connecting hole into the installation cavity.

[0016] In some embodiments, the stroller also includes a driving bracket, one end of which is rotatably connected to the bracket, two groups of driving members are arranged on one end of the driving bracket, and the driving members are configured to rotate around the rotation center line when the driving bracket rotates relative to the bracket.

[0017] In some embodiments, the stroller includes two groups of the brackets, the lower part of each group of the brackets is provided with the wheel assembly, and each group of the brackets is provided with the orientation mechanism, the two groups of the brackets can rotate relative to each other around the rotation center line, and there are two groups of driving members, the two groups of driving members correspond one-to-one to the orientation mechanisms on the two groups of the brackets, the two groups of driving members are arranged along the extension direction of the rotation center line, and correspond to the two groups of conversion members respectively.

[0018] In some embodiments, the two groups of driving members are arranged along the extension direction of the rotation center line, and the two groups of driving members are synchronously arranged to rotate around the rotation center line, wherein the two groups of conversion members alternately cooperate with the corresponding giving way parts of the driving members, or the two groups of conversion members simultaneously cooperate with the corresponding abutting parts of the driving members, so that one of the two groups of wheel assemblies is in a universal state and the other group is in a directional state, or the two groups of wheel assemblies are in a directional state at the same time.

[0019] In some embodiments, the stroller further comprises a driving bracket, one end of the driving bracket being connected to the two groups of the brackets so as to rotate together around the rotation center line, and the two groups of the driving members being connected to the driving bracket and rotating synchronously with the driving bracket when the driving bracket rotates around the rotation center line.

[0020] When the two groups of the brackets are relatively unfolded, the two groups of the wheel assemblies are arranged at intervals along the front-to-back direction, and the rotation centerline is located between the two groups of the wheel assemblies along the front-to-back direction. The driving bracket has two different usage positions when it is unfolded relative to the two groups of the brackets, and the driving bracket switches between the two usage positions when it rotates around the rotation centerline, wherein, in the front-to-back direction, the wheel assembly located on the same side of the rotation centerline as the other end of the driving bracket is in the directional state, and the other group of the wheel assembly is in the universal state; when the driving bracket and one of the groups of the brackets are retracted into each other, both groups of the wheel assemblies are in the directional state.

[0021] In some embodiments, the conversion member is disposed on the bracket so as to be capable of translational movement along the longitudinal extension direction of the bracket. During the process of the conversion member switching from abutting against the abutting portion to cooperating with the yielding portion, the conversion member moves along the longitudinal extension direction of the bracket toward the driving member. The orientation mechanism further comprises:

[0022] a directing member, the directing member being arranged at a lower portion of the bracket so as to be capable of translational movement in a direction parallel to the steering axis;

[0023] The first elastic member provides the force required for the conversion member to move upward,

[0024] a traction member connected between the orientation member and the conversion member;

[0025] a second elastic member, providing the force required for the directional member to move downward;

[0026] In which, the force acting on the first elastic member is greater than the force acting on the second elastic member, and the wheel seat is provided with a matching portion that cooperates with the directional member. When the wheel assembly is in a directional state, the directional member and the matching portion cooperate with each other; when the wheel assembly is in a universal state, the directional member and the matching portion are disengaged.

[0027] Due to the application of the above technical solution, the present invention has the following advantages: In the baby stroller of the present invention, a driving member is provided that is movably connected to the frame, and a stop portion and a clearance portion are provided on the driving member. When the driving member moves relative to the frame, the stop portion on the driving member cooperates with the conversion member in the orientation mechanism to place the wheel assembly in the orientation state; and when the clearance portion on the driving member cooperates with the conversion member, the wheel assembly can be placed in the universal state. In this way, the wheel assembly can be switched between the orientation state and the universal state by simply driving the driving member to move relative to the frame, which simplifies the state switching steps and the switching structure of the wheel assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A schematic side view of the baby carriage according to an embodiment of the present invention in a first usage state;

[0030] Figure 2 for Figure 1 A schematic diagram of the side structure of the baby carriage during folding;

[0031] Figure 3 for Figure 1 A schematic side view of the baby carriage in a folded state;

[0032] Figure 4 for Figure 1 A side structural schematic diagram of the baby carriage when it is converted to a second usage state;

[0033] Figure 5 for Figure 4 A schematic diagram of the side structure of the baby carriage during folding;

[0034] Figure 6 for Figure 4 A schematic side view of the baby carriage in a folded state;

[0035] Figure 7 for Figure 1 Schematic diagram of the longitudinal cross-sectional structure of a baby carriage,

[0036] Figure 8 for Figure 7 A schematic structural diagram of a driving member in a baby carriage;

[0037] Figure 9 for Figure 7 A magnified schematic diagram of the middle part A;

[0038] Figure 10 for Figure 7 Enlarged schematic diagram of middle part B;

[0039] Figure 11 for Figure 7 Enlarged schematic diagram of middle C part;

[0040] Figure 12 for Figure 2 Schematic diagram of the longitudinal cross-sectional structure of a baby carriage,

[0041] Figure 13 for Figure 12 Enlarged schematic diagram of the middle D part;

[0042] Figure 14 for Figure 12 Enlarged schematic diagram of middle E part;

[0043] Figure 15 for Figure 12 Enlarged schematic diagram of the middle F part;

[0044] Figure 16 for Figure 4 Schematic diagram of the longitudinal cross-sectional structure of a baby carriage,

[0045] Figure 17 for Figure 16 Enlarged schematic diagram of the middle G section;

[0046] Figure 18 for Figure 16 Enlarged schematic diagram of the middle H part;

[0047] Figure 19 for Figure 16 The enlarged schematic diagram of the middle part I;

[0048] Figure 20 for Figure 5 Schematic diagram of the longitudinal cross-sectional structure of a baby carriage,

[0049] Figure 21 for Figure 20 Enlarged schematic diagram of the middle M part;

[0050] Figure 22 for Figure 20 Enlarged schematic diagram of the middle K section;

[0051] Figure 23 for Figure 20 Enlarged schematic diagram of the middle L part;

[0052] Figure 24 for Figure 1 Schematic diagram of the connection structure between the driving bracket and the driving member in the baby carriage;

[0053] Figure 25 for Figure 24 Enlarged schematic diagram of the middle J part;

[0054] Figure 26 for Figure 25 Structural diagram from another perspective;

[0055] In the above attached figures:

[0056] 1. First bracket; 11. First rod; 12. First adapter;

[0057] 2. Second bracket; 21. Second rod; 22. Second adapter;

[0058] 3. Driving bracket; 31. Third rod; 32. Third adapter;

[0059] 4. Drive plate; 41. First drive member; 41a. First yielding portion; 41b. First abutting portion; 41c. First guide portion; 42. Second drive member; 42a. Second yielding portion; 42b. Second abutting portion; 42c. Second guide portion; 43. Shaft hole; 44. Mounting ring;

[0060] 5. First wheel assembly; 51. First wheel seat; 52. First wheel body;

[0061] 6. Second wheel assembly; 61. Second wheel seat; 62. Second wheel body;

[0062] 7. First orientation mechanism; 71. First conversion member; 72. First orientation member; 73. First traction member; 74. First elastic member (1); 75. Second elastic member (1); 76. First steering shaft;

[0063] 8. Second orientation mechanism; 81. Second conversion member; 82. Second orientation member; 83. Second traction member; 84. First elastic member (2); 85. Second elastic member (2); 86. Second steering shaft;

[0064] 9. Rotating shaft; 10. Seat pocket connecting seat. DETAILED DESCRIPTION

[0065] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings to make the advantages and features of the present invention more easily understood by those skilled in the art. It should be noted that the description of these embodiments is intended to facilitate understanding of the present invention and does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0066] Herein, the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings of the stroller in the unfolded state. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting this application.

[0067] See also Figures 1 to 6 The baby carriage shown includes a bracket and a wheel assembly arranged at the bottom of the bracket. Specifically, in this embodiment, there are two groups of brackets, namely a first bracket 1 and a second bracket 2; there are correspondingly two groups of wheel assemblies, namely a first wheel assembly 5 arranged at the bottom of the first bracket 1 and a second wheel assembly 6 arranged at the bottom of the second bracket 2.

[0068] The stroller also includes a drive bracket 3, which is rotatably connected to the first bracket 1 and the second bracket 2. When the stroller is deployed, the first bracket 1 and the second bracket 2 are relatively spread apart at a predetermined angle, and the first wheel assembly 5 and the second wheel assembly 6 are spaced apart in the front-to-back direction, supporting the stroller on the ground. The drive bracket 3 is a push rod bracket that rotates relative to the first bracket 1 and the second bracket 2 to switch between push-to-play positions and can be retracted relative to the first bracket 1 and the second bracket 2 to fold the stroller.

[0069] Specifically, the stroller further includes a seat connector 10 for attaching and connecting the seat device, which is fixed to the upper portion of the first bracket 1 or the upper portion of the second bracket 2. When the driving bracket 3 switches the push position, the orientation of the seat device can be changed without changing the seat device, thereby facilitating the selection of the child in the seat device facing the front of the pusher or facing the pusher as needed during use.

[0070] like Figure 1 As shown, the driving bracket 3 is in the first use position at this time. In the first use position, the driving bracket 3 and the second bracket 2 are located on the same side; when the baby carriage needs to be folded, as shown in FIG. Figure 2 As shown, the driving bracket 3 is rotated relative to the second bracket 2 to be folded to one side of the second bracket 2, and then the first bracket 1 is folded to the other side of the second bracket 2 to achieve the folding of the baby carriage. Figure 3As shown in the structure. Figure 4 As shown, the driving bracket 3 is now in the second use position. In the second use position, the driving bracket 3 and the first bracket 1 are located on the same side. When the baby carriage needs to be folded, as shown in FIG. Figure 5 As shown, the driving bracket 3 is rotated relative to the first bracket 1 so that it is folded to one side of the first bracket 1, and then the second bracket 2 is folded to the other side of the first bracket 1 to realize the folding of the baby carriage. Figure 6 The structure shown.

[0071] The first wheel assembly 5 and the second wheel assembly 6 are both configured to be able to switch between a universal state and a directional state, so that when the driving bracket 3 is in the first use position, the baby carriage is in a state as follows: Figure 1 In the state shown, the first wheel assembly 5 can be converted to the universal state and the second wheel assembly 6 can be converted to the directional state; and when the driving bracket 3 is in the second use position, the baby carriage is in the state shown. Figure 4 In the state shown, the second wheel assembly 6 can be converted to a universal state and the first wheel assembly 5 can be converted to a directional state, thereby facilitating the person pushing the baby carriage.

[0072] Specifically, the first wheel assembly 5 includes a first wheel seat 51 and a first wheel body 52 arranged on the first wheel seat 51. When the first wheel assembly 5 is in a universal state, the first wheel seat 51 can rotate around the first steering axis 76 relative to the first bracket 1; when the first wheel assembly 5 is in a directional state, the first wheel seat 51 is fixed relative to the first bracket 1; the second wheel assembly 6 includes a second wheel seat 61 and a second wheel body 62 arranged on the second wheel seat 61. When the second wheel assembly 6 is in a universal state, the second wheel seat 61 can rotate around the second steering axis 86 relative to the second bracket 2; when the second wheel assembly 6 is in a directional state, the second wheel seat 61 is fixed relative to the second bracket 2.

[0073] Both the first bracket 1 and the second bracket 2 are equipped with an orientation mechanism. This orientation mechanism is movably mounted on the corresponding bracket to engage or releasably connect with the corresponding wheel assembly, thereby enabling the corresponding wheel assembly to switch between an orientation state and a universal state. The orientation mechanism includes at least a conversion member, which has a first position and a second position on the corresponding bracket. When the conversion member is in the first position, the corresponding wheel assembly is in the orientation state; when the conversion member is in the second position, the corresponding wheel assembly is in the universal state. Specifically, the first bracket 1 is equipped with a first orientation mechanism 7, which includes a first conversion member 71. When the first conversion member 71 switches between the first and second positions, the first wheel assembly 5 switches between the orientation state and the universal state. The second bracket 2 is equipped with a second orientation mechanism 8, which includes a second conversion member 81. When the second conversion member 81 switches between the first and second positions, the second wheel assembly 6 switches between the orientation state and the universal state.

[0074] The stroller also includes a drive mechanism comprising at least a driving member movably connected to the support. The driving member is provided with a supporting portion and a yielding portion. As the switching member shifts from abutting the supporting portion to cooperating with the yielding portion, the switching member switches between the first position and the second position. Specifically, the switching member is arranged to rotate relative to the corresponding support about a rotational centerline. The supporting portion and the yielding portion are arranged circumferentially along the rotational centerline, and the distance between the supporting portion and the rotational centerline is different from the distance between the yielding portion and the rotational centerline. Specifically, in this embodiment, the driving mechanism comprises two sets, each comprising a first driving member 41 and a second driving member 42. The first driving member 41 comprises a first yielding portion 41a and a first abutting portion 41b; the second driving member 42 comprises a second yielding portion 42a and a second abutting portion 42b. The first driving member 41 and the second driving member 42 are configured to cooperate with the first conversion member 71 and the second conversion member 81, respectively, to achieve the state transition between the first wheel assembly 5 and the second wheel assembly 6.

[0075] In this embodiment, the first driving member 41 and the second driving member 42 are relatively fixedly arranged. Here, the first driving member 41 and the second driving member 42 are integrally arranged on the driving disk 4, and the driving disk 4 is rotatably connected to the first bracket 1 and the second bracket 2 around the rotation center line. The first driving member 41 and the second driving member 42 are arranged sequentially along the extension direction of the above-mentioned rotation center line, and are respectively cooperated with the first conversion member 71 on the first bracket 1 and the second conversion member 81 on the second bracket 2.

[0076] In this embodiment, the first relief portion 41a includes a first relief groove formed relative to the first abutting portion 41b in the direction of the rotation centerline. The first abutting portion 41b is arc-shaped and extends about the rotation centerline. When the first conversion member 71 is in the first position, the first conversion member 71 abuts the first abutting portion 41b, placing the first wheel assembly 5 in a directional state. When the first conversion member 71 is in the second position, the first conversion member 71 is positioned within the first relief groove, placing the first wheel assembly 5 in a universal state. Similarly, the second relief portion 42a includes a second relief groove formed relative to the second abutting portion 42b in the direction of the rotation centerline. The second abutting portion 42b also has an arc-shaped shape and extends about the rotation centerline. When the second conversion member 81 is in the first position, the second conversion member 81 abuts the second abutting portion 42b, placing the second wheel assembly 6 in a directional state. When the second conversion member 81 is in the second position, the second conversion member 81 is positioned within the second relief groove, placing the second wheel assembly 6 in a universal state.

[0077] See also Figure 8As shown, the opening sizes of the first and second avoidance grooves are gradually increased from the bottom outward, so as to form a first guide portion 41c and a second guide portion 42c on the side walls of the avoidance grooves, respectively. During the movement of the first conversion member 71 from the first yielding portion 41a to the first abutting portion 41b, the first conversion member 71 cooperates with the first guide portion 41c to provide guidance for the first conversion member 71. During the movement of the second conversion member 81 from the second yielding portion 42a to the second abutting portion 42b, the second conversion member 81 cooperates with the second guide portion 42c to provide guidance for the second conversion member 81. Specifically, the first and second avoidance grooves are both V-shaped grooves with their openings facing outward, and the groove walls on both sides respectively constitute their two guide portions.

[0078] In this embodiment, the first bracket 1 includes a first rod body 11 and a first adapter seat 12 fixed on the first rod body 11. A first installation cavity is provided on the first adapter seat 12. The first driving member 41 is accommodated in the above-mentioned first installation cavity and can be rotatably connected to the first adapter seat 12 around the rotation center line. A first connecting hole is provided on the first adapter seat 12. The above-mentioned first installation cavity is connected to the rod cavity of the first rod body 11 through the first connecting hole. The first conversion member 71 can be arranged in the rod cavity of the first rod body 11 for translational movement along the length extension direction of the first rod body 11, and the first conversion member 71 can pass through the first connecting hole into the first installation cavity, thereby cooperating with the first driving member 41. Similarly, the second bracket 2 includes a second rod body 21 and a second adapter seat 22 fixed on the second rod body 21. The second adapter seat 22 is provided with a second mounting cavity. The second driving member 42 is accommodated in the above-mentioned second mounting cavity and can be rotatably connected to the second adapter seat 22 around the rotation center line. A second connecting hole is provided on the second adapter seat 22. The above-mentioned second mounting cavity is connected to the rod cavity of the second rod body 21 through the second connecting hole. The second conversion member 81 can be arranged in the rod cavity of the second rod body 21 for translational movement along the length extension direction of the second rod body 21, and the second conversion member 81 can pass through the second connecting hole into the second mounting cavity, thereby cooperating with the second driving member 42.

[0079] During the specific setting, the first adapter seat 12, the second adapter seat 22 and the driving disk 4 are connected together to rotate around the rotation center line, the first driving member 41 on the driving disk 4 is accommodated in the first mounting cavity on the first adapter seat 12, and the second driving member 42 on the driving disk 4 is accommodated in the second mounting cavity on the second adapter seat 22. In the process of the driving disk 4 rotating relative to the first bracket 1 and the second bracket 2, the first adapter 71 extends into the first mounting cavity through the first connecting hole and cooperates with the first driving member 41 on the driving disk 4, and the second adapter 81 extends into the second mounting cavity through the second connecting hole and cooperates with the second driving member 42 on the driving disk 4.

[0080] In this embodiment, the diameter of the circle around the rotation centerline of the first yield portion 41a and the first abutting portion 41b in the first driving member 41 is d1, and the diameter of the circle around the rotation centerline of the second yield portion 42a and the second abutting portion 42b in the second driving member 42 is d2, and the above d1>d2. A mounting ring portion 44 is further formed on the driving disk 4 between the first driving member 41 and the second driving member 42, and a step surface is formed between the mounting ring portion 44 and the first driving member 41 to facilitate the axial positioning and installation of the driving disk 4 when connected to the first bracket 1 and the second bracket 2.

[0081] In this embodiment, referring to the accompanying drawings, the first conversion member 71 is configured to be arranged on the first bracket 1 so as to be capable of translational movement along the length extension direction of the first bracket 1. In the process of the first conversion member 71 converting from abutting against the abutting portion 41b to cooperating with the first yielding portion 41a, the first conversion member 71 moves along the length extension direction of the first bracket 1 toward the first driving member 41, and accordingly causes the first wheel assembly 5 to switch from a directional state to a universal state.

[0082] Specifically, the first orientation mechanism 7 further includes a first orientation member 72, a first elastic member (1) 74, a first traction member 73, and a second elastic member (1) 75, wherein the first orientation member 72 is arranged at the lower part of the first bracket 1 so as to be capable of translational movement parallel to the direction of the first steering axis 76, and the first wheel seat 51 is provided with a first matching portion that cooperates with the first orientation member 72, the first matching portion being specifically a positioning groove, and the lower part of the first orientation member 72 can be fitted downwardly into the first positioning groove. When the first orientation member 72 is inserted downwardly into the first matching portion, the first wheel seat 51 cannot rotate around the first steering axis 76, and at this time the first wheel assembly 5 is in an orientation state; and when the first orientation member 72 moves upward and disengages from the first matching portion, the first wheel seat 51 can universally rotate around the first steering axis 76, and at this time the first wheel assembly 6 is in a universal state. The first traction member 73 is connected between the first directional member 72 and the first conversion member 71, the first elastic member (1) 74 provides the force required for the first conversion member 71 to move upward, and the second elastic member (1) 75 provides the force required for the first directional member 72 to move downward, wherein the force of the first elastic member (1) 74 is greater than the force of the second elastic member (1) 75. In this way, when the first driving member 41 does not abut against the first conversion member 71 to apply its downward force, or when the downward force applied to the first conversion member 71 is not greater than the difference between the forces of the first elastic member (1) 74 and the second elastic member (1) 75, or when When the first conversion member 71 cooperates with the first yielding portion 41a, the first directional member 72 is pulled upward by the first traction member 73 under the action of the first elastic member (1) 74, so that the first directional member 72 is disengaged from the first matching portion, thereby keeping the first wheel assembly 5 in a universal state; and once the first abutting portion 41b on the first driving member 41 abuts against the first conversion member 71 and exerts its downward force, so that the first conversion member 71 overcomes the force of the first elastic member (1) 74 and moves downward, then under the action of the second elastic member (1) 75, the first directional member 72 cooperates downward with the first matching portion, so that the first wheel assembly 5 is converted to a directional state.

[0083] Similarly, the second conversion member 81 is also arranged on the second bracket 2 so as to be able to move translationally along the length extension direction of the second bracket 2. In the process of the second conversion member 81 converting from abutting against the abutting portion 42b to cooperating with the second yielding portion 42a, the second conversion member 81 moves along the length extension direction of the second bracket 2 toward the second driving member 42, and accordingly makes the second wheel assembly 6 switch from the directional state to the universal state.

[0084] Specifically, the second directional mechanism 8 also includes a second directional member 82, a first elastic member (2) 84, a second traction member 83, and a second elastic member (2) 85, wherein the second directional member 82 is arranged at the lower part of the second bracket 2 so as to be capable of translational movement parallel to the direction of the second steering axis 86, and a second matching portion that cooperates with the second directional member 82 is provided on the second wheel seat 61. When the second directional member 82 moves downward and cooperates with the second matching portion, the second wheel assembly 6 is in a directional state, and when the second directional member 82 moves upward and disengages from the second matching portion, the second wheel assembly 6 is in a universal state. The second traction member 83 is connected between the second directional member 82 and the second conversion member 81, the first elastic member (2) 84 provides the force required for the second conversion member 81 to move upward, and the second elastic member (2) 85 provides the force required for the second directional member 82 to move downward, wherein the force of the first elastic member (2) 84 is greater than the force of the second elastic member (2) 85, so that when the second conversion member 81 moves upward along the second rod body 21 and cooperates with the second yielding portion 42a, the second directional member 82 disengages from the second matching portion and the second wheel assembly 6 remains in a universal state, and when the second conversion member 81 cooperates with the second abutting portion 42b and the second rod body 21 moves downward, the second directional member 82 cooperates with the second matching portion and the second wheel assembly 6 remains in a directional state.

[0085] In this embodiment, the rotation of the drive bracket 3 about the rotation centerline drives the rotation of the drive disk 4, thereby causing the first drive member 41 and the second drive member 42 to rotate synchronously about the rotation centerline. Specifically, the drive bracket 3 includes a third rod 31 and a third adapter 32 disposed at one end of the third rod 31. The drive disk 4 is connected to the third adapter 32 and rotates synchronously therewith. The drive disk 4 is also provided with an axially extending shaft hole 43. The third adapter 32 is connected to the drive disk 4 via a rotating shaft 9. The shaft hole 43 is configured as a square hole, and the shaft section of the rotating shaft 9 inserted into the shaft hole 43 is also square, ensuring that the drive bracket 3 can rotate synchronously with the drive disk 4. The axis of the rotating shaft 9 constitutes the rotation centerline X around which the first bracket 1, the second bracket 2, and the drive disk 4 rotate relative to each other.

[0086] In the stroller of this embodiment, the two sets of conversion members alternately engage with the corresponding yielding portions of the driving members, or the two sets of conversion members simultaneously engage with the corresponding abutting portions of the driving members. That is, during the rotation of the driving bracket 3 relative to the first bracket 1 and the second bracket 2, the following situations may occur: one is that the first conversion member 71 and the first yielding portion 41a and the second conversion member 82 and the second yielding portion 42a alternately engage with each other, so that one of the first wheel assembly 5 and the second wheel assembly 6 is in a universal state and the other is in a fixed state. This is mainly used to facilitate the pushing of the stroller when the stroller is in the unfolded state, the first bracket 1 and the second bracket 2 are relatively unfolded, and the driving bracket 3 is in the first use position or the second use position. The other is that when the first conversion member 71 cooperates with the first abutment portion 42a, the second conversion member 82 also cooperates with the second abutment portion 42b, so that both the first wheel assembly 5 and the second wheel assembly 6 are in a directional state. This is mainly used when the baby carriage is folded. When the driving bracket 3 is rotated to a certain angle, the first wheel assembly 5 and the second wheel assembly 6 are both converted to a directional state, which facilitates the first wheel assembly 5 and the second wheel assembly 6 to be folded in a preset direction after the first bracket 1 and the second bracket 2 are close to each other, making the folded baby carriage more flat and compact.

[0087] The following describes in detail how to use the stroller of this embodiment:

[0088] See also Figures 7 to 10 As shown, the stroller is in the unfolded state, with the drive bracket 3 in the first use position and the second bracket 2 on the same side of the rotational centerline. A person pushing the stroller stands on the same side of the drive bracket 3 and the second bracket 2, facing toward the first bracket 1. In this state, the first conversion member 71 engages with the first relief portion 41a, placing the first wheel assembly 5 in a universal position. Simultaneously, the second conversion member 81 abuts against the second abutment portion 42a, placing the second wheel assembly 6 in a directional position.

[0089] See also Figures 12 to 15 As shown, in Figure 7 On the basis of the above, the driving bracket 3 is rotated downward toward the second bracket 2 and folded. During the process of the driving bracket 3 driving the first driving member 41 and the second driving member 42 to rotate synchronously by a certain angle, the first conversion member 71 moves along the first guide portion 41c and withdraws from the first yielding portion 41a, and abuts against the first abutting portion 41b, so that the first wheel assembly 5 is converted to the oriented state; the second conversion member 81 slides along the second abutting portion 42b and remains abutted against the second abutting portion 42b, while the second wheel assembly 6 remains in the oriented state. In this way, when the driving bracket 3 and the second bracket 2 are folded, the first wheel assembly 5 and the second wheel assembly 6 are both in the oriented state. At this time, the first bracket 1 and the second bracket 2 are driven to rotate relative to each other, thus achieving the folding of the baby carriage.

[0090] See also Figures 16 to 19 As shown, the stroller is in the unfolded state with the drive bracket 3 in the second use position. The drive bracket 3 and the first bracket 1 are located on the same side of the rotation centerline. The pusher stands on the same side of the drive bracket 3 and the first bracket 1, pushing the stroller toward the second bracket 2. In this state, the first conversion member 71 abuts against the first abutment portion 41a, placing the first wheel assembly 5 in a directional position. The second conversion member 81 engages with the second clearance portion 42a, placing the second wheel assembly 6 in a universal position.

[0091] See also Figures 20 to 23 As shown, in Figure 16 On the basis of the above, the driving bracket 3 is rotated downward toward the first bracket 1 and folded. During the process of the driving bracket 3 driving the first driving member 41 and the second driving member 42 to rotate synchronously by a certain angle, the second conversion member 81 moves along the second guide portion 42c and withdraws from the second yielding portion 42a, and abuts against the second abutting portion 42b, so that the second wheel assembly 6 is converted to the oriented state; the first conversion member 71 slides along the first abutting portion 41b and remains abutted against the first abutting portion 41b, while the first wheel assembly 5 remains in the oriented state. In this way, when the driving bracket 3 and the first bracket 1 are folded, the first wheel assembly 5 and the second wheel assembly 6 are both in the oriented state. At this time, the first bracket 1 and the second bracket 2 are driven to rotate relative to each other, thus achieving the folding of the baby carriage.

[0092] In summary, the baby carriage provided in this embodiment, when unfolded for use, when the use position of the driving bracket 3 is converted to change the pushing direction, the adjustment of the states of the first wheel assembly 5 and the second wheel assembly 6 is synchronously completed during the rotation of the driving bracket 3, so that when the pusher is pushing, the wheel assembly located in the front remains in a universal state, and the wheel assembly located in the rear remains in a directional state, without adding unnecessary conversion operation steps, and is very convenient to use.

[0093] At the same time, the baby carriage provided in this embodiment, when folded, no matter which use position the driving bracket 3 is currently in, it can be rotated and folded together with the bracket on the side, and at the same time, both sets of wheel assemblies are converted to a directional state, so that when the first bracket 1 and the second bracket 2 are further driven to rotate and fold together, the first wheel assembly 5 and the second wheel assembly 6 can be fixed in direction, and the baby carriage can be folded more compactly.

[0094] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0095] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art. In the event of any conflict or inconsistency between the definitions used herein and those in other published documents, the definitions used herein shall prevail.

[0096] It should also be noted that the “rotational connection” in the above embodiments refers to a pivotal connection, unless the context clearly indicates other rotational connection methods.

[0097] As shown in this specification and claims, the terms "comprise" and "include" only indicate that the steps and elements that have been clearly identified are included, and these steps and elements do not constitute an exclusive list. The method or apparatus may also include other steps or elements.

[0098] It is further understood that in this disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship. The singular forms "a", "the", and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0099] It will be further understood that the terms "first," "second," and the like are used to describe various types of information, but such information should not be limited to these terms. These terms are used solely to distinguish information of the same type from one another and do not indicate a particular order or level of importance. In fact, the terms "first," "second," and the like are fully interchangeable. For example, first information could be referred to as second information, and similarly, second information could be referred to as first information without departing from the scope of this disclosure.

[0100] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the essence of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A baby carriage, characterized in that: The baby carriage comprises: Bracket; a wheel assembly disposed at the lower portion of the bracket, the wheel assembly being configured to be convertible between a universal state and a directional state, wherein the wheel assembly comprises a wheel seat and a wheel body disposed on the wheel seat, wherein when the wheel assembly is in the universal state, the wheel seat is capable of rotating relative to the bracket about a steering axis; and when the wheel assembly is in the directional state, the wheel seat is fixed relative to the bracket; an orientation mechanism movably disposed on the bracket, the orientation mechanism being capable of being coupled or releasably connected to the wheel assembly so as to switch the wheel assembly between the orientation state and the universal state, the orientation mechanism comprising at least a conversion member, the conversion member having a first position and a second position on the bracket, wherein when the conversion member is in the first position, the wheel assembly is in the orientation state; and when the conversion member is in the second position, the wheel assembly is in the universal state; A driving mechanism, comprising at least a driving member, wherein the driving member is movably connected to the bracket; Wherein, the driving member is provided with a supporting portion and a yielding portion. When the conversion member is converted from abutting against the supporting portion to cooperating with the yielding portion, the conversion member switches between the first position and the second position.

2. The baby carriage according to claim 1, wherein: The driving member rotates relative to the bracket around the rotation center line, the abutment portion and the yielding portion are arranged as a whole along the circumference of the rotation center line, and the distance between the abutment portion and the rotation center line is different from the distance between the yielding portion and the rotation center line.

3. The baby carriage according to claim 2, wherein: The giving way portion includes a avoidance groove formed relative to the abutting portion in the direction of the rotation center line; when the conversion member is located in the first position, the conversion member abuts against the abutting portion; when the conversion member is located in the second position, the conversion member is positioned in the avoidance groove.

4. The baby carriage according to claim 3, wherein: The opening size of the avoidance groove is set to gradually increase from the bottom to the outside to form a guide portion on the side wall of the avoidance groove; during the process of the conversion member moving from the yielding portion to the abutting portion, the guide portion and the conversion member cooperate with each other to provide guidance for the conversion member.

5. The baby carriage according to claim 2, wherein: The bracket includes a rod body and a transfer seat fixed on the rod body, the transfer seat has a mounting cavity, the driving member is accommodated in the mounting cavity and can be rotatably connected to the transfer seat around the rotation center line; The adapter seat is also provided with a connecting hole, and the installation cavity is connected to the rod cavity of the rod body through the connecting hole. The conversion member can be arranged in the rod cavity for translational movement along the length extension direction of the rod body, and the conversion member can pass through the connecting hole into the installation cavity.

6. The baby carriage according to claim 2, characterized in that: The baby carriage also includes a driving bracket, one end of which is rotatably connected to the bracket, two groups of driving members are arranged on one end of the driving bracket, and the driving members are configured to rotate around the rotation center line when the driving bracket rotates relative to the bracket.

7. The baby carriage according to claim 2, characterized in that: The baby carriage includes two groups of the above-mentioned brackets, the lower part of each group of the brackets is provided with the above-mentioned wheel assembly, and each group of the brackets is provided with the above-mentioned orientation mechanism, the two groups of the brackets can rotate relative to each other around the rotation center line, the two groups of the driving members are provided with one-to-one correspondence to the orientation mechanisms on the two groups of the brackets, the two groups of the driving members are arranged along the extension direction of the rotation center line, and respectively cooperate with the two groups of the conversion members.

8. The baby carriage according to claim 7, characterized in that: The two groups of driving members are arranged along the extension direction of the rotation center line, and the two groups of driving members are synchronously arranged to rotate around the rotation center line, wherein the two groups of conversion members alternately cooperate with the corresponding giving parts of the driving members, or the two groups of conversion members simultaneously cooperate with the corresponding abutting parts of the driving members, so that one of the two groups of wheel assemblies is in a universal state and the other group is in a directional state, or the two groups of wheel assemblies are in a directional state at the same time.

9. The baby carriage according to claim 8, characterized in that: The baby carriage further includes a driving bracket, one end of which is connected to the two groups of brackets so as to rotate together around the rotation center line, and the two groups of driving members are connected to the driving bracket and rotate synchronously with the driving bracket when the driving bracket rotates around the rotation center line. When the two groups of the brackets are relatively unfolded, the two groups of the wheel assemblies are arranged at intervals along the front-to-back direction, and the rotation centerline is located between the two groups of the wheel assemblies along the front-to-back direction. The driving bracket has two different usage positions when it is unfolded relative to the two groups of the brackets, and the driving bracket switches between the two usage positions when it rotates around the rotation centerline, wherein, in the front-to-back direction, the wheel assembly located on the same side of the rotation centerline as the other end of the driving bracket is in the directional state, and the other group of the wheel assembly is in the universal state; when the driving bracket and one of the groups of the brackets are retracted into each other, both groups of the wheel assemblies are in the directional state.

10. The baby carriage according to any one of claims 1 to 9, characterized in that: The conversion member is provided on the bracket so as to be capable of translational movement along the longitudinal extension direction of the bracket. During the process of the conversion member converting from abutting against the abutting portion to cooperating with the yielding portion, the conversion member moves along the longitudinal extension direction of the bracket toward the driving member. The orientation mechanism further comprises: a directing member, the directing member being arranged at a lower portion of the bracket so as to be capable of translational movement in a direction parallel to the steering axis; The first elastic member provides the force required for the conversion member to move upward, a traction member connected between the orientation member and the conversion member; a second elastic member, providing the force required for the directional member to move downward; In which, the force acting on the first elastic member is greater than the force acting on the second elastic member, and the wheel seat is provided with a matching portion that cooperates with the directional member. When the wheel assembly is in a directional state, the directional member and the matching portion cooperate with each other; when the wheel assembly is in a universal state, the directional member and the matching portion are disengaged.

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