Patent ID: 9150236
Filing Date: 2015-10-06
Classification: B62B

Abstract:
1. A braking mechanism installed on a child carrier, the child carrier comprising a foot assembly and a wheel pivoted to the foot assembly, the wheel comprising a braking hub, the braking mechanism comprising: a base connected to the foot assembly and corresponding to the braking hub; a braking treadle pivoted to an end of the base, a pivoting point being a connection to which the braking treadle and the base are pivoted, the braking treadle comprising an engaging slot disposed on a lateral wall thereof corresponding to the braking hub, the engaging slot separately engaging with the braking hub; and a resilient member with an end being connected to the braking treadle, the other end of the resilient member being connected to the base, a first connecting point being a connection to which the resilient member and the braking treadle are connected, a second connecting point being a connection to which the resilient member and the base are connected, the pivoting point and the second connecting point defining a straight line, the resilient member driving the braking treadle to rotate relative to the base for enabling the braking treadle to be in an initial status when the first connecting point deviates to be located on an above side of the straight line, and the resilient member further driving the braking treadle to rotate relative to the base reversely for enabling the braking treadle to be in a braking status when the first connecting point deviates to be located on a below side of the straight line, wherein a maximum force is generated by the resilient member when the first connecting point is rotated to be on the straight line due to a first deformation of the resilient member, a second deformation of the resilient member occurs when the braking treadle is in the initial status, a third deformation of the resilient member occurs when the breaking treadle is in the breaking status, and the first deformation is greater than the second deformation and the third deformation, wherein the base comprises a braking base and a connecting shaft, the connecting shaft is connected to the foot assembly and the wheel, the braking base corresponds to the braking hub and is connected to the connecting shaft, the braking treadle is pivoted to an end of the braking base, the pivoting point is a connection to which the braking treadle and the braking base are pivoted, and the resilient member drives the braking treadle to rotate to the braking base when the first connecting point deviates from the straight line, and wherein the second connecting point is a connection to which the resilient member and the connecting shaft are connected.