초록 ▼

A removable wheel device includes a wheel unit, a housing, and a locking unit. The wheel unit includes a wheel body and a wheel axle formed with an annular groove. The wheel axle is extendible removably into the housing. The locking unit includes an actuator connected pivotally to the housing, an el

A removable wheel device includes a wheel unit, a housing, and a locking unit. The wheel unit includes a wheel body and a wheel axle formed with an annular groove. The wheel axle is extendible removably into the housing. The locking unit includes an actuator connected pivotally to the housing, an elastic member mounted between an operating end portion of the actuator and the housing, and a locking pin connected to a force transmitting end portion of the actuator. The operating end portion is depressible to move the force transmitting end portion from a locking position, where the locking pin extends into the annular groove to prevent removal of the wheel axle from the housing, to an unlocking position, where the locking pin is disengaged from the annular groove to permit removal of the wheel axle from the housing.

대표청구항 ▼

What is claimed is: 1. A stroller comprising: a stroller frame; a removable wheel device including a wheel unit including a wheel body and a wheel axle coupled to said wheel body, said wheel axle having an axis and an outer axle surface having an annular groove that surrounds said axis; a housing h

What is claimed is: 1. A stroller comprising: a stroller frame; a removable wheel device including a wheel unit including a wheel body and a wheel axle coupled to said wheel body, said wheel axle having an axis and an outer axle surface having an annular groove that surrounds said axis; a housing having a frame mounting portion mounted on said stroller frame, said frame mounting portion having an outer surface with a ring-shaped barrier, the housing also having a brake installing portion connected to said frame mounting portion, said wheel axle removably extending into said housing, and a locking unit including an actuator disposed in said ring-shaped barrier of said frame mounting portion of the housing, said actuator having an operating end portion, a force transmitting end portion opposite to said operating end portion, and a pivot portion located between said operating end portion and said force transmitting end portion, the pivot portion being connected pivotally to said ring-shaped barrier of said frame mounting portion of said housing, an elastic member mounted between said operating end portion of said actuator and said housing, and a locking pin having a first pin end connected to said force transmitting end portion of said actuator and a second pin end opposite to said first pin end, said operating end portion of said actuator being depressible against restoring action of said elastic member to move said force transmitting end portion from a locking position, where said second pin end of said locking pin extends into said annular groove in said wheel axle to prevent removal of said wheel axle from said housing, to an unlocking position, where said second pin end of said locking pin is disengaged from said annular groove in said wheel axle to permit removal of said wheel axle from said housing; and a brake device including a drum mounted to and co-rotatable with said wheel body, and a drum braking mechanism mounted to said brake installing portion and operable to stop rotation of said drum. 2. The stroller as claimed in claim 1, wherein said locking unit further includes a plug member mounted in said housing, said plug member defining an axle receiving space to receive said wheel axle, and said plug member having a through hole disposed radially relative to said axis and in spatial communication with said axle receiving space, said locking pin extending through said through hole and into said axle receiving space to engage said annular groove of said wheel axle. 3. The stroller as claimed in claim 2, wherein said frame mounting portion of said housing includes a positioning hole registered with said through hole, said ring-shaped barrier surrounding said positioning hole and said retaining seat and said locking pin extending through said positioning hole, said frame mounting portion further having a retaining seat disposed at one side of said positioning hole for retaining said elastic member on said housing. 4. The stroller as claimed in claim 1, wherein said brake device is a hand brake that further includes a cord connected to said drum braking mechanism for controlling braking operation of said drum braking mechanism, said brake installing portion being disposed at one side of said frame mounting portion, said housing further including a brake cover for covering said brake installing portion, said brake cover and said brake installing portion cooperating to define an accommodating space to accommodate said drum braking mechanism. 5. The stroller as claimed in claim 4, wherein said drum braking mechanism includes: a brake disc connected to and co-rotatable with said drum; a pair of calipers connected to said cord; and a pair of brake pads, each disposed between said brake disc and a respective one of said calipers; said cord being operable to drive said calipers to urge said brake pads tightly against said brake disc to stop rotation of said drum. 6. The stroller as claimed in claim 4, further comprising a foot brake including a plurality of angularly spaced apart brake teeth that are provided on said drum and that surround said axis, and a brake pedal connected pivotally to said housing and operable to selectively engage and disengage said brake teeth. 7. The stroller as claimed in claim 6, wherein said brake pedal includes a stop flange operable to selectively engage and disengage said brake teeth. 8. The stroller as claimed in claim 6, wherein said brake pedal includes an arcuate slot, and said brake cover has a limiting pin that extends into said arcuate slot to limit range of pivoting movement of said brake pedal relative to said housing. 9. The stroller as claimed in claim 1, wherein said brake device is a foot brake that further includes a plurality of angularly spaced apart brake teeth, said brake teeth being provided on said drum and surrounding said axis, said brake installing portion projecting from said frame mounting portion, said drum braking mechanism including a brake pedal connected pivotally to said brake installing portion and operable to selectively engage and disengage said brake teeth. 10. The stroller as claimed in claim 9, wherein said brake pedal includes a stop flange to selectively engage and disengage said brake teeth. 11. The stroller as claimed in claim 9, wherein said brake pedal is formed with an arcuate slot, and said brake installing portion has a limiting pin that extends into said arcuate slot to limit range of pivoting movement of said brake pedal relative to said housing.