Collapsible stroller frame
View Patent ↗A collapsible stroller frame capable of being either collapsed or expanded with a rod set, wherein a slide sleeve is located at a front supporter of the stroller frame and a foldable supporter is pivotally connected between the front supporter and a rear supporter. A link rod connects the slide sleeve and the foldable supporter, and is pivotally connected between the front and rear supporter. The foldable supporter includes a front folding tube and a rear folding tube, pivotally connected to each other. A user can operate the foldable supporter to shorten the distance between the front and rear folding tubes, by disengaging the slide sleeve from the frame, thereby facilitating assembly and folding of the stroller.
1. A collapsible stroller frame, comprising:
a front supporter, including a handle portion and a leg portion, wherein a lower end of the leg portion is provided with a front wheel set;
a rear supporter, having an upper end pivotally connected to the front supporter and a lower end provided with a rear wheel set;
a sliding sleeve, movably mounted on the front supporter, wherein the sliding sleeve detachably locks the frame into an expanded position; and
a foldable supporter, including a front folding tube and a rear folding tube pivotally connected to each other, the foldable supporter being pivotally connected between the front supporter and the rear supporter; and
a link rod, connected between the sliding sleeve and the foldable supporter,
wherein upon folding the frame, the sliding sleeve is released from the frame, thereby driving the foldable support, and wherein the sliding sleeve moves down the front supporter in connection with the link rod, thereby causing the front folding tube and the rear folding tube to fold into a V-shape to draw the front supporter close to the rear supporter into a folded position.
2. The collapsible stroller frame of claim 1 , wherein the sliding sleeve is provided with a socket for positioning a seat, so as to allow the seat to move with the sliding sleeve during folding of the frame.
3. The collapsible stroller frame of claim 1 , wherein the handle portion and the leg portion are made in one-piece.
4. The collapsible stroller frame of claim 1 , wherein the handle portion pivots and rotates toward the leg portion during folding of the frame.
5. The collapsible stroller frame of claim 1 , wherein the handle portion slides inside the leg portion when the frame is expanded or collapsed.
6. The collapsible stroller frame of claim 1 , wherein the handle portion and the leg portion are configured in a closed, oval shape.
7. The collapsible stroller frame of claim 1 , wherein one end of the front folding tube is pivotally connected to one end of the rear folding supporter.
8. The collapsible stroller frame of claim 7 , wherein one end of the link rod, the front folding tube and the rear folding tube are pivotally connected to the same pivot point.
9. The collapsible stroller frame of claim 1 , wherein one end of the link rod, the front folding tube and the rear folding tube are pivotally connected to a pivoting base.
10. The collapsible stroller frame of claim 1 , wherein the sliding sleeve and the front supporter are mutually lockable.
11. The collapsible stroller frame of claim 10 , wherein a positioning piece extends from the sliding sleeve.
12. The collapsible stroller frame of claim 11 , wherein the leg portion is provided with a positioning projection which locks with the positioning piece.
13. The collapsible stroller frame of claim 1 , wherein the sliding sleeve is provided with a positioning hole which locks with an elastic projection on the leg portion.
14. The collapsible stroller frame of claim 1 , wherein the front supporter has a connecting base for pivotally connecting to the rear supporter.
15. The collapsible stroller frame of claim 14 , wherein the sliding sleeve is lockable with the connecting base.
16. The collapsible stroller frame of claim 1 , wherein the rear folding tubes is provided with a handle grip which is pulled up to fold the frame.