Stroller frame

Patent metadata

Field	Value
Publication number	US-10414424-B2
Application number	US-201715801079-A
Country	US
Kind code	B2
Filing date	Nov 1, 2017
Priority date	Nov 18, 2016
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

A stroller frame includes two side frame units that are symmetrically arranged. Each of the side frame units includes a handle rod, a front leg, a rear leg rod, and a support rod. The front leg includes a first front leg rod connected pivotally to an end of the handle rod, and a second front leg rod connected pivotally to the first front leg rod and adapted to be connected fixedly to a seat member. The rear leg rod is connected pivotally to the handle rod. The support rod has an end connected pivotally to the rear leg rod, and an opposite end adapted to be connected pivotally to the seat member. The support rod is connected indirectly and pivotally to the second front leg rod.

First claim

What is claimed is:

1. A stroller frame comprising two side frame units that are symmetrically arranged, each of said side frame units including:
a handle rod;
a front leg that includes a first front leg rod connected pivotally to an end of said handle rod, and a second front leg rod that is connected pivotally to said first front leg rod and that is adapted to be connected fixedly to a seat member;
a rear leg rod that is connected pivotally to said handle rod; and
a support rod that has an end connected pivotally to said rear leg rod, and an opposite end adapted to be connected pivotally to the seat member, said support rod being connected indirectly and pivotally to said second front leg rod,
wherein each of said side frame units further includes a securing member that is adapted to be connected fixedly to a bottom of the seat member, and that has an end secured to said second front leg rod, and an opposite end connected pivotally to said support rod.

2. The stroller frame as claimed in claim 1 , wherein:
each of said side frame units further includes a side rod that has an end connected pivotally to said front leg, and an opposite end connected pivotally to said rear leg rod; and
a pivot intersection of said end of said side rod and said front leg is adapted to be higher than the seat member.

3. The stroller frame as claimed in claim 2 , wherein:
for each of said side frame units, said handle rod, said first front leg rod, said side rod, and said rear leg rod cooperatively form a first four-bar linkage mechanism;
for each of said side frame units, said first front leg rod, said second front leg rod, said support rod, and said side rod cooperatively form a second four-bar linkage mechanism; and
said stroller frame being operable by virtue of said first and second four-bar linkage mechanisms between a folded state and an unfolded state.

4. The stroller frame as claimed in claim 2 , wherein, for each of said side frame units, said rear leg rod, said opposite end of said side rod, and said end of said support rod interconnect with one another at a single intersection.

5. The stroller frame as claimed in claim 2 , wherein:
for each of said side frame units, said handle rod and said rear leg rod interconnect with each other at a first pivot intersection, said front leg and said lower end of said handle rod interconnect with each other at a second pivot intersection, said end of said side rod and said first front leg rod interconnect with each other at a third pivot intersection, and said opposite end of said side rod and said rear leg rod interconnect with each other at a fourth pivot intersection; and
for each of said side frame units, said handle rod, said first front leg rod, said side rod, and said rear leg rod cooperatively form a first four-bar linkage mechanism having said first, second, third and fourth pivot intersections.

6. The stroller frame as claimed in claim 5 , wherein:
for each of said side frame units, said end of said support rod and said rear leg rod interconnect with each other at the fourth pivot intersection, said opposite end of said support rod is adapted to be connected pivotally to the seat member at a fifth pivot intersection, and said first and second leg rods interconnect with each other at a sixth pivot intersection; and
for each of said side frame units, said first front leg rod, said second front leg rod, said support rod, and said side rod cooperatively form a second four-bar linkage mechanism having the third, fourth, fifth and sixth pivot intersections.

7. The stroller frame as claimed in claim 1 , further comprising a lock mechanism adapted to be connected between said opposite end of said support rod of one of said side frame units and the seat member.

8. The stroller frame as claimed in claim 1 , wherein distal ends of said handle rods of said side frame units which are opposite to said front legs of said side frame units are connected to each other.

9. The stroller frame as claimed in claim 1 , wherein lower ends of said second front leg rods of said side frame units are connected to each other, said second front leg rods of said side frame units being adapted for cooperatively supporting a footrest thereon.

10. A stroller frame comprising two side frame units that are symmetrically arranged, each of said side frame units including:
a handle rod;
a front leg that includes a first front leg rod connected pivotally to an end of said handle rod, and a second front leg rod that is connected pivotally to said first front leg rod and that is adapted to be connected fixedly to a seat member;
a rear leg rod that is connected pivotally to said handle rod; and
a support rod that has an end connected pivotally to said rear leg rod, and an opposite end adapted to be connected pivotally to the seat member, said support rod being connected indirectly and pivotally to said second front leg rod,
wherein:
each of said side frame units further includes a side rod that has an end connected pivotally to said front leg, and an opposite end connected pivotally to said rear leg rod; and
a pivot intersection of said end of said side rod and said front leg is adapted to be higher than the seat member, and
wherein, for each of said side frame units, said rear leg rod, said opposite end of said side rod, and said end of said support rod interconnect with one another at a single intersection.

11. A stroller frame comprising two side frame units that are symmetrically arranged, each of said side frame units including:
a handle rod;
a front leg that includes a first front leg rod connected pivotally to an end of said handle rod, and a second front leg rod that is connected pivotally to said first front leg rod and that is adapted to be connected fixedly to a seat member;
a rear leg rod that is connected pivotally to said handle rod; and
a support rod that has an end connected pivotally to said rear leg rod, and an opposite end adapted to be connected pivotally to the seat member, said support rod being connected indirectly and pivotally to said second front leg rod,
wherein:
each of said side frame units further includes a side rod that has an end connected pivotally to said front leg, and an opposite end connected pivotally to said rear leg rod; and
a pivot intersection of said end of said side rod and said front leg is adapted to be higher than the seat member, and
wherein:
for each of said side frame units, said handle rod and said rear leg rod interconnect with each other at a first pivot intersection, said front leg and said lower end of said handle rod interconnect with each other at a second pivot intersection, said end of said side rod and said first front leg rod interconnect with each other at a third pivot intersection, and said opposite end of said side rod and said rear leg rod interconnect with each other at a fourth pivot intersection; and
for each of said side frame units, said handle rod, said first front leg rod, said side rod, and said rear leg rod cooperatively form a first four-bar linkage mechanism having said first, second, third and fourth pivot intersections.

12. The stroller frame as claimed in claim 11 , wherein:
for each of said side frame units, said end of said support rod and said rear leg rod interconnect with each other at the fourth pivot intersection, said opposite end of said support rod is adapted to be connected pivotally to the seat member at a fifth pivot intersection, and said first and second leg rods interconnect with each other at a sixth pivot intersection; and
for each of said side frame units, said first front leg rod, said second front leg rod, said support rod, and said side rod coo

Assignees

• Wonderland Switzerland Ag

Inventors

• Yuan Jia-Liang

Classifications

• B62B7/044 Primary

  three wheeled · CPC title

• B62B7/08 Primary

  in the direction of, or at right angles to, the wheel axis · CPC title

• B62B9/20

  Handle bars; Handles · CPC title

• B62B9/00

  Accessories or details specially adapted for children's carriages or perambulators (providing for travelling on snow B62B19/00) · CPC title

• B62B7/06 Primary

  collapsible or foldable · CPC title