초록 ▼

A stroller is provided with a handle having a horizontal middle part and two side pipes. The two side pipes are connected to the horizontal middle part by gear trains so as to be turnable about axes perpendicular to an axis of the horizontal middle part, respectively. A folding part operating mechan

A stroller is provided with a handle having a horizontal middle part and two side pipes. The two side pipes are connected to the horizontal middle part by gear trains so as to be turnable about axes perpendicular to an axis of the horizontal middle part, respectively. A folding part operating mechanism is incorporated into the horizontal middle part of the handle. The side pipes can be folded and unfolded relative to the horizontal middle part by turning the horizontal middle part about its axis.

대표청구항 ▼

1. A foldable stroller comprising:a handle having (i) a middle part having an axis about which said middle part is turnable, and (ii) two side pipes connected to opposite ends of said middle part so as to be turnable about axes perpendicular to said axis of said middle part, respectively; and a fold

1. A foldable stroller comprising:a handle having (i) a middle part having an axis about which said middle part is turnable, and (ii) two side pipes connected to opposite ends of said middle part so as to be turnable about axes perpendicular to said axis of said middle part, respectively; and a folding part operating mechanism, incorporated into said handle, for turning said two side pipes about said axes, respectively, said folding part operating mechanism having gear trains between said middle part and said two side pipes, respectively, for interlocking said middle part and said two side pipes, wherein each of said gear trains includes a first bevel gear mounted on said middle part and having an axis coaxial with said axis of said middle part, and a second bevel gear mounted on a respective one of said two side pipes and having an axis perpendicular to said axis of said first bevel gear. 2. The foldable stroller according to claim 1, further comprising:locking members for maintaining the stroller in an unfolded state; and a release mechanism, incorporated into said middle part, for releasing said locking members. 3. The foldable stroller according to claim 2, whereinsaid release mechanism includes (i) sliding members connected to said locking members by wires and having projections for sliding in said middle part, (ii) a cam member having slots respectively engaged with said projections of said sliding members, and capable of being moved in opposite directions perpendicular to said axis of said middle part, said slots being inclined relative to said axis of said middle part, and (iii) a release lever for operating said cam member for movement in the opposite directions, such that said sliding members are to slide in said middle part by moving said cam member in the opposite directions perpendicular to said axis of said middle part by actuating said release lever so as to release said locking members. 4. The foldable stroller according to claim 3, whereinsaid cam member has an inclined wall declining toward said release lever, such that when an end part of said release lever is pressed against said inclined wall of said cam member said cam member is moved in a direction perpendicular to said axis of said middle part. 5. A foldable stroller comprising:right and left rear legs; a rear connecting bar interconnecting said right and left rear legs, said rear connecting bar having a middle section and two end sections pivotally connected to opposite ends of said middle section, respectively; and a foot-operated folding part operating mechanism on said rear connecting bar and combined with said middle section and said two end sections of said rear connecting bar, said foot-operated folding part operating mechanism including (i) a tubular member on said middle section of said rear connecting bar, (ii) first bevel gears on opposite ends of said tubular member, and (iii) second bevel gears connected to said two end sections of said rear connecting bar, respectively, and engaged with said first bevel gears, respectively, such that upon actuating said foot-operated folding part operating mechanism said two end sections are turned relative to said middle section. 6. The foldable stroller according to claim 5, further comprising:an operating lever projecting outwardly from said tubular member; and a locking bolt slidably placed in said operating lever for locking said tubular member relative to said middle section of said rear connecting bar. 7. The foldable stroller according to claim 6, whereinsaid operating lever is pivotally supported on said tubular member for forward and backward turning through a predetermined angle, said locking bolt has a guide pin at its outer end, and V-shaped guide grooves diverging toward a free end of said operating lever are formed in an inner surface of said operating lever. 8. The foldable stroller according to claim 6, further comprising:an unlocking member pivotally connected to an outer end part of said operating lever, said unlocking member being connected to said locking bolt by a link. 9. The foldable stroller according to claim 5, whereinsaid second bevel gears are connected to said two end sections of said rear connecting bar, respectively, by respective coil springs having axes aligned with turning axes of said two end sections of said rear connecting bar, respectively. 10. The foldable stroller according to claim 5, further comprising:plates attached to said second bevel gears, respectively; and a spring extended between said plates so as to urge said plates, together with said two end sections of said rear connecting bar, in a folding direction. 11. The foldable stroller according to claim 5 further comprising:right and left front legs; a front connecting bar connecting said right and left front legs, said front connecting bar having a middle section and two end sections pivotally connected to opposite ends of said middle section, respectively; and a spring extended between said two end sections of said front connecting bar so as to urge said end sections of said front connecting bar in a folding direction. 12. The foldable stroller according to claim 5, further comprising:a pulley, having an operating lever, mounted for turning on said middle section of said rear connecting bar; and two wires having first ends, respectively, fixed to said pulley, and having second ends guided by guide members and connected to said end sections of said rear connecting bar, respectively. 13. The foldable stroller according to claim 5, further comprising:an operating rod formed integrally with one of said two end sections of said rear connecting bar so as to extend from said one of said end sections, wherein a middle part of said operating rod is connected to a middle part of the other of said two end sections by a link. 14. A foldable stroller comprising:right and left rear legs; a rear connecting bar interconnecting said right and left rear legs, said rear connecting bar having a middle section and two end sections pivotally connected to opposite ends of said middle section, respectively; and a foot-operated folding part operating mechanism on said rear connecting bar and combined with said middle section and said two end sections of said rear connecting bar, said foot-operated folding part operating mechanism including (i) a tubular member, having laterally symmetrical inclined slots, mounted on said middle section of said rear connecting bar, (ii) two connecting rods supported so as to be movable along said middle section of said connecting bar, with first ends of said two connecting rods being connected to said two ends sections of said rear connecting bar, respectively, and (iii) projections, connected to second ends of said two connecting rods, engaged in said laterally symmetrical inclined slots, respectively, such that upon actuating said foot-operated folding part operating mechanism said two end sections are turned relative to said middle section.