초록 ▼

A caster for a baby carriage is composed of: a caster holder mounted to a front leg of a baby carriage; a caster column provided at the caster holder and having a flange-shaped portion at its lower end, wherein the caster bearing member is slidably and rotatably mounted relative to the caster column

A caster for a baby carriage is composed of: a caster holder mounted to a front leg of a baby carriage; a caster column provided at the caster holder and having a flange-shaped portion at its lower end, wherein the caster bearing member is slidably and rotatably mounted relative to the caster column and supports a front wheel at one side. Tapered surfaces that are inclined toward a circumferential direction and engage each other are provided on a top surface of the flange-shaped portion of the caster column and a downwardly directed surface of the caster bearing member, respectively. A spring is provided between the caster holder and the caster bearing member to force the caster bearing member in a direction toward the flange-shaped portion of the caster column.

대표청구항 ▼

1. A caster for a baby carriage comprising:a caster holder provided on the baby carriage; a caster bearing member slidably and rotatably attached to said caster holder; a wheel rotatable attached to said caster bearing member; and a wheel straight advancing position fixing device, provided between s

1. A caster for a baby carriage comprising:a caster holder provided on the baby carriage; a caster bearing member slidably and rotatably attached to said caster holder; a wheel rotatable attached to said caster bearing member; and a wheel straight advancing position fixing device, provided between said caster holder and said caster bearing member, for causing said caster bearing member to move downwardly and rotate with respect to said caster holder so as to return and fix said wheel to a straight advancing position when said wheel is lifted, wherein said wheel straight advancing position fixing device includes a caster column that is provided at said caster holder and has a flange-shaped portion at a lower end of said caster column, and also includes a downwardly directed surface of said caster bearing member that engages with an upper surface of said flange-shaped portion. 2. The caster for a baby carriage according to claim 1, whereinsaid upper surface of said flange-shaped portion is tapered, and said downwardly directed surface of said caster bearing member is tapered, with these tapered surfaces being inclined in a circumferential direction. 3. The caster for a baby carriage according to claim 2, further comprising:a spring between said caster holder and said caster bearing member so as to force said caster bearing member against said flange-shaped portion of said caster column. 4. The caster for a baby carriage according to claim 3, further comprising:a cushion material between said caster holder and said spring. 5. The caster for a baby carriage according to claim 3, further comprising:an additional spring between said caster holder and said caster bearing member to serve as a wheel buffer. 6. The caster for a baby carriage according to claim 2, whereinthe tapered upper surface of said flange-shaped portion and the tapered downwardly directed surface of said caster bearing member are inclined symmetrically with respect to a longitudinal axis of the baby carriage, respectively. 7. The caster for a baby carriage according to claim 1, whereinsaid caster column is formed integrally with said caster holder. 8. A caster for a baby carriage, comprising:a caster holder provided on the baby carriage; a caster bearing member slidably and rotatably attached to said caster holder; a wheel rotatable attached to said caster bearing member; and a wheel straight advancing position fixing device, provided between said caster holder and said caster bearing member, for causing said caster bearing member to move downwardly and rotate with respect to said caster holder so as to return and fix said wheel to a straight advancing position when said wheel is lifted, wherein said wheel straight advancing position fixing device includes a caster column that is provided at said caster holder and has a roller mounted at a lower end of said caster column, and also includes a downwardly directed surface of said caster bearing member that engages with said roller. 9. The caster for a baby carriage according to claim 8, whereinsaid downwardly directed surface of said caster bearing member is tapered, with the tapered surface being in contact with said roller and inclined in a circumferential direction. 10. The caster for a baby carriage according to claim 9, further comprising:a spring between said caster holder and said caster bearing member so as to force said the caster bearing member against said roller. 11. The caster for a baby carriage according to claim 10, further comprising:a cushion material between said caster holder and said spring. 12. The caster for a baby carriage according to claim 10, further comprising:an additional spring between said caster holder and said caster bearing member to serve as a wheel buffer. 13. The caster for a baby carriage according to claim 9, whereinthe tapered downwardly directed surface of said caster bearing member is inclined symmetrically with respect to a longitudinal axis of the baby carriage. 14. The caster for a baby carriage according to claim 8, whereinsaid caster column is formed integrally with said caster holder. 15. A caster for a baby carriage, comprising:a caster holder provided on the baby carriage; a caster bearing member slidably and rotatable attached to said caster holder; a wheel rotatable attached to said caster bearing member; and a wheel straight advancing position fixing device, provided between said caster holder and said caster bearing member, for causing said caster bearing member to move downwardly and rotate with respect to said caster holder so as to return and fix said wheel to a straight advancing position when said wheel is lifted, wherein said wheel straight advancing position fixing device includes a fixing pin provided at said caster bearing member to move forward/backward in a radial direction, and also includes a vertically extending concave groove on an inner surface of said caster holder, with said fixing pin being engaged with said concave groove. 16. The caster for a baby carriage according to claim 15, further comprising:an elastic member to exteriorly force said fixing pin in the radial direction. 17. The caster for a baby carriage according to claim 15, further comprising:a circumferential groove defined by upper and lower stepped portions on an outer surface of said caster bearing member; and a stop pin at said caster holder to engage with said upper and lower stepped portions.