Child carrier apparatus

1. A child carrier apparatus comprising:

a base frame having a tube segment that is affixed with an attachment fixture; and

a detachable seat including a tubular support structure, and a coupling element mounted at a side segment of the support structure, the support structure and the coupling element being pivotally connected each other via a pivot shaft, the coupling element including a plurality of holding grooves disposed in different radial directions relative to the pivot shaft, and the support structure being operable to lock with any of the holding grooves to hold the seat at different angular positions;

wherein an inclination of the support structure is adjustable relative to the coupling element, and the coupling element is configured to detachably lock with the attachment fixture via a latch for holding the seat with the base frame.

2. The child carrier apparatus according to claim 1 , wherein the coupling element includes a mount portion of a tubular shape, and when the coupling element is locked with the attachment fixture, the mount portion inserts into the attachment fixture and the latch respectively engages through corresponding openings formed through the mount portion and the attachment fixture.

3. The child carrier apparatus according to claim 2 , wherein the latch is assembled in the mount portion, and is movable between a locking position and an unlocking position.

4. The child carrier apparatus according to claim 3 , wherein the latch is biased toward the locking position by a spring force.

5. The child carrier apparatus according to claim 2 , wherein the seat includes a release mechanism operable to unlock the latch.

6. The child carrier apparatus according to claim 5 , wherein the release mechanism includes:

a driving element assembled in the mount portion at a position adjacent to the latch;

an actuator element movably assembled with the support structure at a position spaced apart from the mount portion; and

a cable extending at least partially along the support structure and having two ends respectively connected with the driving element and the actuator element;

wherein the actuator element is operable to drive the latch to the unlocking position via the connection of the cable and the driving element.

7. The child carrier apparatus according to claim 6 , wherein the latch is movable parallel to a first axis, and the driving element is movable parallel to a second axis generally perpendicular to the first axis.

8. The child carrier apparatus according to claim 7 , wherein the driving element includes a slot through which the latch is movably assembled.

9. The child carrier apparatus according to claim 1 , wherein the support structure includes a latch portion that is movable in a radial direction relative to the pivot shaft to engage with or disengage from any of the holding grooves.

10. The child carrier apparatus according to claim 9 , wherein the latch portion is formed by a distal end of the support structure, and the pivot shaft is mounted through an elongated slot of the support structure such that the support structure is operable to slide relative to the pivot shaft.

11. The child carrier apparatus according to claim 1 , wherein the seat is a rear seat, and the child carrier apparatus further comprises a front seat disposed in front of the rear seat.

12. A child carrier apparatus comprising:

a base frame affixed with an attachment fixture; and

a seat operable to attach with and detach from the base frame, wherein the seat includes:

a tubular support structure;

a coupling element mounted with a side segment of the support structure and including a mount portion, wherein an inclination of the support structure is adjustable relative to the coupling element, and the mount portion is coupled with the attachment fixture for installing the seat on the base frame;

a latch assembled through an interior of the mount portion and operable to lock the coupling element with the attachment fixture; and

a release mechanism operable to unlock the latch, the release mechanism including:

a driving element assembled in the mount portion at a position adjacent to the latch;

an actuator element movably assembled with the support structure at a position spaced apart from the mount portion, the actuator element being operable to drive the latch to an unlocking position; and

a cable extending at least partially along the support structure and having two ends respectively connected with the driving element and the actuator element.

13. The child carrier apparatus according to claim 12 , wherein the mount portion has an interior provided with a guide track along which the driving element is guided for movement.

14. The child carrier apparatus according to claim 12 , wherein the latch is movable parallel to a first axis, and the driving element is movable parallel to a second axis generally perpendicular to the first axis.

15. The child carrier apparatus according to claim 12 , wherein the driving element includes a slot through which the latch is movably assembled.

16. The child carrier apparatus according to claim 15 , wherein the driving element includes a rib protruding at a side of the slot and having a first angled surface, and the latch has a flange provided with a second angled surface in sliding contact with the first angled surface.

17. The child carrier apparatus according to claim 12 , wherein when the coupling element is locked with the attachment fixture, the latch respectively passes through corresponding openings formed through the mount portion and the attachment fixture.

18. The child carrier apparatus according to claim 12 , further including a spring assembled between the latch and an inner sidewall of the mount portion, the spring being operable to bias the latch toward a locking position to lock the coupling element with the attachment fixture.

19. The child carrier apparatus according to claim 12 , wherein the support structure has a generally U-shape.