Baby carriage brake mechanism and baby carriage having the same

1. A baby carriage brake mechanism comprising a frame, a brake drive assembly, two linkage assemblies, brake locks and wheels, wherein:

the brake drive assembly is disposed on the frame,

the two linkage assemblies are respectively slidably disposed on the frame on both of left and right sides,

both ends of the brake drive assembly are respectively in abutting connection with the two linkage assemblies,

all the linkage assemblies are coupled to the brake locks, the wheels are pivotally disposed at both of left and right sides of the frame respectively, and

by driving the brake drive assembly to push the linkage assemblies to act together with the brake locks, the brake locks on both sides are engaged with the wheels,

each of the linkage assemblies comprises a pushing part and a pulling part, and both the pushing part and the pulling part are upward and downward slidably disposed in the frame,

the pulling part is fixedly connected to the brake lock, and

by the brake drive assembly pushing the pushing part to slide, the pushing part pushes the pulling part to slide, and the pulling part pulls a corresponding brake lock.

2. The baby carriage brake mechanism according to claim 1 , wherein:

the brake drive assembly comprises a brake pedal and two drive members,

the brake pedal is upward and downward slidably disposed on the frame,

both ends of the brake pedal are respectively in abutting connection with the two drive members,

the two drive members are leftward and rightward slidably disposed on the frame,

the two drive members are in abutting connection with the linkage assemblies, and

by driving the brake pedal to slide, the two drive members are pushed to slide, such that the two drive members respectively drive the two linkage assemblies to act.

3. The baby carriage brake mechanism according to claim 2 , wherein:

the brake drive assembly further comprises an elastically deformable positioning member having two ends,

the brake pedal has a first tracking slot and a second tracking slot,

the first tracking slot is located below the second tracking slot,

one end of the first tracking slot is in communication with one end of the second tracking slot,

one end of the positioning member is fixed in the frame, and

by driving the brake pedal to slide, the other end of the positioning member is alternately engaged at a lowest position of the first tracking slot and a lowest position of the second tracking slot.

4. The baby carriage brake mechanism according to claim 3 , wherein:

both the first tracking slot and the second tracking slot have a concave structure, and

both ends of the first tracking slot are respectively in communication with both ends of the second tracking slot,

wherein both the first tracking slot and the second tracking slot are V-shaped.

5. The baby carriage brake mechanism according to claim 2 , wherein:

the brake drive assembly further comprises a first elastic resetting member for resetting the brake pedal, and

the first elastic resetting member is disposed between the brake pedal and the frame.

6. The baby carriage brake mechanism according to claim 1 , wherein:

the brake drive assembly comprises a brake pedal and drive members,

the brake pedal is fixedly connected to the drive members,

the drive members is pivotally coupled to the frame,

both ends of the drive members are respectively in abutting connection with the two linkage assemblies, and

by driving the brake pedal to rotate together with the drive members, the drive members push the linkage assemblies to act.

7. The baby carriage brake mechanism according to claim 6 , wherein:

the drive members comprises a driving body and two driving parts,

the driving body is pivotally coupled to the frame,

the two driving parts are respectively protruding at both ends of the driving body, and

the two driving parts are in abutting connection with the linkage assemblies.

8. The baby carriage brake mechanism according to claim 1 , wherein:

the pushing part comprises a pushing member and a plug pin,

the pushing member is upward and downward slidably disposed in the frame, and

one end of the plug pin is fixedly connected to the pushing member, and the other end of the plug pin is in abutting connection with the pulling part.

9. The baby carriage brake mechanism according to claim 1 , wherein:

the pushing part comprises a first roller and a plug pin,

the first roller is pivotally connected to the plug pin,

the first roller is in abutting connection with the brake drive assembly,

the plug pin is upward and downward slidably disposed in the frame, and

the plug pin is in abutting connection with the pulling part.

10. The baby carriage brake mechanism according to claim 1 , wherein:

the pulling part comprises a first fixing member and a first traction member,

the first fixing member is upward and downward slidably disposed in the frame,

one end of the first traction member is fixedly connected to the first fixing member, and the other end of the first traction member is fixedly connected to the brake lock, and

by the first fixing member sliding and pulling the first traction member to move, the first traction member pulls the corresponding brake lock, such that the brake lock is engaged with one of the wheels.

11. The baby carriage brake mechanism according to claim 10 , wherein:

a middle portion of the first traction member has an inverted U-shaped structure and is supported on the frame, such that the first traction member moves by sliding down of the first fixing member.

12. The baby carriage brake mechanism according to claim 11 , wherein:

the pulling part further comprises a reversing member,

the reversing member is fixed in the frame and located on a side of the first fixing member, and

the inverted U-shaped structure of the first traction member is disposed to penetrate into the reversing member,

wherein:

a second roller is pivotally connected to the reversing member from an inner side, and

the first traction member is wound on the second roller.

13. The baby carriage brake mechanism according to claim 10 , wherein:

the pulling part further comprises a second fixing member,

the second fixing member is upward and downward slidably disposed in the frame, and

one end of the second fixing member is fixedly connected to the first traction member, and the other end of the second fixing member is fixedly connected to the brake lock.

14. The baby carriage brake mechanism according to claim 13 , wherein:

the pulling part further comprises a third elastic resetting member for resetting the second fixing member, and

the third elastic resetting member is disposed between the second fixing member and the frame.

15. A baby carriage comprising seat part, wherein:

the baby carriage further comprises the baby carriage brake mechanism of claim 1 , and

the seat part is disposed on the frame.

16. The baby carriage according to claim 15 , wherein:

the frame comprises a frame body and rotating parts,

the rotating parts are pivotally connected to the frame body on both of left and right sides respectively, and

the wheels are pivotally connected to the rotating parts.

17. The baby carriage according to claim 16 , wherein:

the baby carriage further comprises a push and drift operating part and a rotation orientation assembly,

the push and drift operating part is disposed on the frame body,

one end of the rotation orientation assemblies is coupled to the push and drift operating part, and the other end of the rotation orientation assemblies is engaged between the frame body and the rotating part, and

by operation of the push and drift operating part, the rotation orientation assembly is disengaged with the rotating part.

18. The baby carriage according to claim 17 , wherein:

the rotation orientation assembly comprises a second traction member and an orienting member,

one end of the second traction member is connected to and capable of being pulled by the push and drift operating part, and the other end of the second traction member is coupled to the orienting member, and

the orienting member is engaged between the frame body and the rotating part.