Joint structure for a baby stroller

Abstract

A joint structure for a baby stroller comprises a articulated assembly connected to the rear leg tube of the stroller frame, and uses the articulated assembly controllable pivoted with the push bar and the front leg tube. The articulated assembly has an engaging pin for locking the push bar in a fixed position therefore to keep the stroller in a erected position. The engaging pin may pulled and disengaged from the end of the pull bar, and allows the push bar to rotate to collapse the stroller.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate several embodiments of the invention and, together with the description, serve to explain the principles of the invention.

FIG. 1 is a side view of a embodiment of the present invention showing an articulated assembly connected to the rear leg tube and pivotally connected with the push bar and the front leg.

FIG. 2 is an exploded view of an embodiment of the articulated assembly according to the present invention.

FIG. 3 is a schematic perspective view showing the position of an engaging pin in a engaged position that limited the push bar from rotation and fixed the stroller frame in an erected position.

FIG. 4 is a schematic perspective view showing the engaging pin slidably received within a positioning bracket and guided by a slot thereof.

FIG. 5 is an enlarged schematic view showing a locking mechanism limited the folding between the upper portion and lower portion of the push bar.

FIG. 6 is an enlarged schematic view showing the locking mechanism released the limitation of the folding between the upper portion and lower portion of the push bar.

FIG. 7 is an enlarged schematic view showing the engaging pin limited the rotation of the push bar.

FIG. 8 is an enlarged schematic view showing the engaging pin dismissed the limitation, and allows the push bar rotated to an angle.

FIG. 9 is a schematic view showing the engaging pin slidably moved to dismiss the limitation, and allows the push bar to rotate to an angle.

FIG. 10 is a schematic side view showing the directions of folding the stroller of the present embodiment.

FIG. 11 is a schematic side view showing the folding status the stroller of the present embodiment.

FIG. 12 is a schematic side view showing an alternative embodiment according to the present invention.

FIG. 13 is a schematic side view showing another alternative embodiment according to the present invention.

Claims

1. A joint structure for a baby stroller, comprising: a stroller frame, having a push bar, a front leg tube and a rear leg tube;a positioning bracket, connected with the upper end of the rear leg tube, and pivotally connected with the front leg tube and the push bar of the stroller frame;an engaging pin, slidably connected within the positioning bracket for controllably abutting against the end of the push bar, anda release device, operatively connected between the engaging pin and the stroller frame for controlling the engaging pin to move away from the end of the push bar.

2. The joint structure for a baby stroller of claim 1, wherein the front leg tube and the push bar of the baby stroller are pivotally connected with a connecting element.

3. The joint structure for a baby stroller of claim 1, wherein the push bar having one end formed with a abutting edge for abutting with the engaging pin to stop the rotation of the push bar.

4. The joint structure for a baby stroller of claim 1, wherein the positioning bracket having a pair of side walls, the pair of side walls having a slot for guiding the movement of the engaging pin.

5. The joint structure for a baby stroller of claim 1, wherein the engaging pin is biased by a resilient element to a position to stop the rotation of the push bar.

6. The joint structure for a baby stroller of claim 1, wherein the release device is operatively received in the push bar.

7. The joint structure for a baby stroller of claim 1, wherein the release device includes a driving element, a connecting element and a hooked element, and the hooked element is operatively connected with the stroller frame for driving the driving element via the connecting element.

8. The joint structure for a baby stroller of claim 1, wherein the hooked element is operatively connected with the push bar of the stroller frame.

9. The joint structure for a baby stroller of claim 1, wherein the hooked element is operatively connected with the rear leg tube of the stroller frame.

10. The joint structure for a baby stroller of claim 1, wherein the side walls of the positioning bracket having a positioning notch for engaging with a positioning pin which laterally extended from the release device.

11. The joint structure for a baby stroller of claim 1, wherein the release device includes a connecting element having one end laterally extended a positioning pin and formed an extending tab.

12. The joint structure for a baby stroller of claim 11, wherein the extending tab having a skewed slot for guiding a pin to drive a driving element to move the engaging pin.