Hand-detecting brake system for baby stroller

A hand-detecting brake system for baby stroller, equipped on a stroller frame (1), comprising:

• a handle holder (2) connected to one end of the stroller frame (1), having a hand-detecting device (3) for creating a signal when a user's hand touches the handle holder (2);
• a brake mechanism (4) operatively mounted on one side of a first wheel (18) of the stroller frame (1) for braking and un-braking the first wheel (18);
• an electric motor (5) capable of driving the brake mechanism (4) to brake the first wheel (18) when received the signal from the hand-detecting device (3), and un-brake the first wheel (18) when the signal from the hand-detecting device (3) being disappeared;
• and
• a battery (6) electrically connected to the hand-detecting device (3) and the electric motor (5) for supplying needed power thereto, wherein
• the first wheel (18) has a first retractably engaging element (180) capable of sliding along a first wheel axle (183) thereof and synchronously rotated with the first wheel (18);
• and the brake mechanism (4) includes:
• a first wheel mount (41) connected to a lower end of the stroller frame (1), formed with a first engaging cavity (410) for engaging with the first retractably engaging element (180) to brake the first wheel (18);
• and
• a first clutch mechanism (42) driven by the electric motor (5) for disengaging the first retractably engaging element (180) from the first engaging cavity (410) to un-brake the first wheel (18), and
• wherein the first clutch mechanism (42) includes:
• a first driving plate (421) driven by the electric motor (5), having one side formed with a plurality of sliding slant faces (422) spaced apart from each other at a predetermined angle;
• and
• a pusher propeller (424) having one side formed with a plurality of protruded portions spaced apart from each other at the predetermined angle for slidably abutting against the plurality of sliding slant faces (422);
• when the first driving plate (421) is rotated by the electric motor (5) in the predetermined angle, the plurality of sliding slant faces (422) would push the pusher propeller (424) toward the first retractably engaging element (180) thereby to disengage the first retractably engaging element (180) from the first engaging cavity (410), so as to un-brake the first wheel (18);
• and when the first driving plate (421) is rotated a further predetermined angle by the electric motor (5), the plurality of sliding slant faces (422) would retract the pusher propeller (424) to allow the spring (182) biasing the first retractably engaging element (180) to engage with the first engaging cavity (410) again, so as to brake the first wheel (18).

A hand-detecting brake system for baby stroller, equipped on a stroller frame (1), comprising:

• a handle holder (2) connected to one end of the stroller frame (1), having a hand-detecting device (3) for creating a signal when a user's hand touches the handle holder (2);
• a brake mechanism (4) operatively mounted on one side of a first wheel (18) of the stroller frame (1) for braking and un-braking the first wheel (18);
• an electric motor (5) capable of driving the brake mechanism (4) to brake the first wheel (18) when received the signal from the hand-detecting device (3), and un-brake the first wheel (18) when the signal from the hand-detecting device (3) being disappeared;
• a battery (6) electrically connected to the hand-detecting device (3) and the electric motor (5) for supplying needed power thereto;
• and
• a second wheel (19) having a second retractably engaging element (190) capable of sliding along a wheel axle thereof and synchronously rotated with the second wheel (19),
• wherein said brake mechanism (4) includes:
• a second wheel mount (91) connected to another lower end of the stroller frame (1), formed with a second engaging in cavity (910) for engaging with the second retractably engaging element (190) to brake the second wheel (19);
• and
• a second clutch mechanism (92) associated with the first clutch mechanism (42) for disengaging the second retractably engaging element 190) from the second engaging cavity (910), so as to brake and un-brake the first wheel (18) and the second wheel (19) synchronously, and
• wherein the second clutch mechanism (92) includes:
• a second driving plate (921) driven by a flexible power transmitting element (182) for synchronously rotating with a first driving plate (421), having one side formed with a plurality of sliding slant faces (922) spaced apart from each other at a predetermined angle;
• and
• a pusher propeller (924) having one side formed with a plurality of protruded portions spaced apart from each other at the predetermined angle for slidably abutting against the plurality of sliding slant faces (922);
• when the second driving plate (921) is rotated in the predetermined angle, the plurality of sliding slant faces (922) would push the pusher propeller (924) toward the second retractably engaging element (190) thereby to disengage the second retractably engaging element (190) from the second engaging cavity (910), so as to un-brake the second wheel (19);
• and when the second driving plate (921) is rotated a further predetermined angle by synchronously rotated with the first driving plate (421), the plurality of sliding slant faces (922) would retract the pusher propeller (924) to allow the second retractably engaging element (190) to engage with the second engaging cavity (910) again, so as to brake the first wheel (18) and the second wheel (19) synchronously.

A hand-detecting brake system for baby stroller, equipped on a stroller frame (1), comprising:

• a handle holder (2) connected to one end of the stroller frame (1), having a hand-detecting device (3) for creating a signal when a user's hand touches the handle holder (2);
• a brake mechanism (4) operatively mounted on one side of a first wheel (18) of the stroller frame (1) for braking and un-braking the first wheel (18);
• an electric motor (5) capable of driving the brake mechanism (4) to brake the first wheel (18) when received the signal from the hand-detecting device (3), and un-brake the first wheel (18) when the signal from the hand-detecting device (3) being disappeared;
• a battery (6) electrically connected to the hand-detecting device (3) and the electric motor (5) for supplying needed power thereto;
• and
• a second wheel (19) having a second retractably engaging element (190) capable of sliding along a wheel axle thereof and synchronously rotated with the second wheel (19),
• wherein said brake mechanism (4) includes:
• a second wheel mount (91) connected to another lower end of the stroller frame (1), formed with a second engaging cavity (910) for engaging with the second retractably engaging element (190) to brake the second wheel (19);
• and
• a second clutch mechanism (92) associated with the first clutch mechanism (42) for disengaging the second retractably engaging element 190) from the second engaging cavity (910), so as to brake and un-brake the first wheel (18) and the second wheel (19) synchronously, and
• wherein the second retractably engaging element (190) has a teethed peripheral, and the second engaging cavity (910) has a relative teethed inner surface for receiving and engaging with the teethed peripheral of the second retractably engaging element (190), and wherein the second retractably engaging element (190) is biased by at least a spring (191) toward the second engaging cavity (910) thereby retaining the second retractably engaging element (190) in a normal braking position.