STROLLER FRAME WITH AN AUTOMATIC BRAKE MECHANISM ACTUATABLE BY HAND DETECTING

摘要

A stroller frame with an automatic brake mechanism actuatable by hand detecting includes at least a first rear wheel, a first locking mechanism, a second rear wheel, a second locking mechanism, a battery and a hand-detecting handle. The hand-detecting handle is capable of detecting the caregiver's hand by a change of capacitance on its surface, generating a first control signal to a power supply circuit when the caregiver's hand is near, and generating a second control signal to the power supply circuit when the caregiver's hand is absent. The power supply circuit may provide currents in different direction to the first locking mechanism and the second locking mechanism according to the first control signal and the second control signal, so as to lock the rear wheels once the caregiver's hand has left the hand-detecting handle, and unlock the rear wheels when the caregiver's hand near the hand-detecting handle automatically.

主权项

1. A stroller frame with an automatic brake mechanism actuatable by hand detecting including:
a first rear wheel (11) being rotatably mounted at a first side of the stroller frame (1) and formed with a plurality of positioning holes (110); a first locking mechanism (2) having a first electromagnet (21) and a first locking pin (22) driven by the first electromagnet (21) for engaging with and disengaging from the positioning holes (110) of the first rear wheel (11) so as to lock and unlock the first rear wheel (11); a second rear wheel (12) being rotatably mounted at a second side of the stroller frame (1) and formed with a plurality of positioning holes (120); a second locking mechanism (3) having a second electromagnet (31) and a second locking pin (32) driven by the second electromagnet (31) for engaging with and disengaging from the positioning holes (120) of the second rear wheel (12) so as to lock and unlock the second rear wheel (12); a battery (4) for providing current to the first electromagnet (21) and the second electromagnet (31) via a power supply circuit (41); and a hand-detecting handle (5) mounted on a rear upper end of the stroller frame (1) and being electrically couple to the power supply circuit (41) for generating a first control signal (501) when detected a caregiver's hand is near, and generating a second control signal (502) when detected the caregiver's hand is absent; wherein the power supply circuit (41) shall supply a first current in first direction (503) to the first electromagnet (21) and the second electromagnet (31) when received the first control signal (501), so as to drive the first locking pin (22) and the second locking pin (32) to disengage from the positioning holes (110)(120) thereby unlocking the first rear wheel (11) and the second rear wheel (12) automatically; and wherein the power supply circuit (41) shall supply a second current in second direction (504) to the first electromagnet (21) and the second electromagnet (31) when received the second control signal (502), so as to drive the first locking pin (22) and the second locking pin (32) to engage with the positioning holes (110)(120) thereby locking the first rear wheel (11) and the second rear wheel (12) automatically.