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A hidden braking device installed on an adjustable walking aid has a connecting unit installed in the walking aid. The connecting unit has an upper shaft connecting to a braking grip, a lower shaft connected to a braking unit, an adjusting seat fixed to the lower shaft for the upper shaft to penetra

A hidden braking device installed on an adjustable walking aid has a connecting unit installed in the walking aid. The connecting unit has an upper shaft connecting to a braking grip, a lower shaft connected to a braking unit, an adjusting seat fixed to the lower shaft for the upper shaft to penetrate, a moving member slidably disposed in the adjusting seat for propelling the upper shaft, and a fastening unit disposed out of the walking aid, corresponding to the moving member. In adjusting the height of the walking aid, the fastening unit utilizes its magnetic attraction to control the moving member. The moving member is influenced to engage with one fixing slot defined on the upper shaft. The height of the walking aid and the length of the connecting unit are concurrently adjusted, which increases the operational convenience.

대표청구항 ▼

1. A hidden braking device installed on an adjustable walking aid including a braking grip, a braking unit controlling a rolling state of a wheel set, and a connecting unit connecting said braking grip with said braking unit; wherein, said connecting unit is disposed inside said walking aid, and sai

1. A hidden braking device installed on an adjustable walking aid including a braking grip, a braking unit controlling a rolling state of a wheel set, and a connecting unit connecting said braking grip with said braking unit; wherein, said connecting unit is disposed inside said walking aid, and said walking aid has an upper frame and a lower frame that are suited to each other; said connecting unit having an upper shaft connected to said braking grip, a lower shaft connected to said braking unit, an adjusting seat connecting said upper shaft with said lower shaft, a moving member slidably disposed in said adjusting seat, and a fastening unit disposed out of said walking aid, correspondent with said moving member; a plurality of fixing slots being equidistantly defined on said upper shaft for satisfying an insertion of said moving member; one end of said moving member being provided with a magnetic member, and the other end of said moving member being provided with a propelling member which is disposed relative to said fixing slots; said fastening unit being magnetic for attracting said magnetic member, thereby allowing said moving member to displace for making said propelling member steadily insert and fix on any of said fixing slots. 2. The braking device as claimed in claim 1, wherein, a plurality of limiting slots are equidistantly defined on said upper frame, and an adjusting unit is disposed on the lower frame; said adjusting unit has a body that is disposed on the lower frame and provided with an accommodating room, a lodging member pivoted to said body within said accommodating room, and a second spring disposed on said lodging member; said lodging member has a block mounted thereon and a chamber defined thereon for receiving said fastening unit; swinging said lodging member allows said block to protrude toward said accommodating room and one of said limiting slots so as to fix said adjustable walking aid and make said fastening unit move to a place directing to said magnetic member of said moving member. 3. The braking device as claimed in claim 1, wherein, a first spring is disposed between said propelling member and said fixing slots. 4. The braking device as claimed in claim 2, wherein, a first spring is disposed between said propelling member and said fixing slots. 5. The braking device as claimed in claim 3, wherein, a plurality of positioning valleys are equidistantly defined on said upper shaft; an elastic positioning member is disposed on said adjusting seat for being able to partially protrude into one of said positioning valleys when said propelling member steadily inserts and fixes on any of said fixing slots. 6. The braking device as claimed in claim 4, wherein, a plurality of positioning valleys are equidistantly defined on said upper shaft; an elastic positioning member is disposed on said adjusting seat for being able to partially protrude into one of said positioning valleys when said propelling member steadily inserts and fixes on any of said fixing slots.