Wheeled carrying apparatus
A wheeled carrying apparatus includes a handle frame rotatable relative to a standing frame between a first and a second position, a wheel mount pivotally connected with the standing frame, a wheel mount latch adapted to lock and unlock the wheel mount with respect to the standing frame, an actuating assembly coupling the wheel mount latch to the handle frame so that the wheel mount latch is movable to engage and disengage the wheel mount in response to a rotation of the handle frame, and a release mechanism including an operating part that is coupled to the actuating assembly via a cable assembly, the operating part being operable to cause the wheel mount latch to disengage from the wheel mount when the handle frame is in the first position.
1. A wheeled carrying apparatus comprising:
a standing frame and a handle frame pivotally coupled to each other, the handle frame being rotatable relative to the standing frame between a first position and a second position of different inclinations;
a wheel mount carrying a wheel and pivotally connected with the standing frame, the wheel being rotatable relative to the wheel mount about a wheel axis;
a locking assembly including a wheel mount latch connected with the standing frame, the wheel mount latch being adapted to engage and thereby rotationally lock the wheel mount with respect to the standing frame, and to disengage and thereby unlock the wheel mount so that the wheel mount is rotatable relative to the standing frame for changing an orientation of the wheel axis;
an actuating assembly coupling the wheel mount latch to the handle frame so that the wheel mount latch is movable to engage and disengage the wheel mount in response to a rotation of the handle frame; and
a release mechanism including an operating part, and a cable assembly coupling the operating part to the actuating assembly, the operating part being operable to cause the wheel mount latch to disengage from the wheel mount when the handle frame is in the first position.
2. The wheeled carrying apparatus according to claim 1 , wherein the cable assembly includes a flexible part, and the flexible part is stretched when the handle frame is in the first position and loosens when the handle frame is in the second position.
3. The wheeled carrying apparatus according to claim 2 , wherein the flexible part is stretched to be adapted to transmit a drawing force induced by an actuation of the operating part for unlocking the wheel mount.
4. The wheeled carrying apparatus according to claim 2 , wherein the cable assembly further includes a cable respectively connected with the operating part and the flexible part, the flexible part being movable relative to the cable to become stretched or to loosen as the handle frame rotates between the first position and the second position.
5. The wheeled carrying apparatus according to claim 2 , wherein the flexible part includes a cable portion, a cord, a rope, a wire, a string, a band, a ribbon or a strip.
6. The wheeled carrying apparatus according to claim 1 , wherein the actuating assembly includes a link actuator movably linked to the handle frame, and a linking part coupling the wheel mount latch to the link actuator.
7. The wheeled carrying apparatus according to claim 6 , wherein the cable assembly includes a flexible part, and the flexible part is connected with the linking part.
8. The wheeled carrying apparatus according to claim 6 , wherein the link actuator is movable in a first or a second direction in response to a rotation of the handle frame between the first position and the second position for causing the wheel mount latch to engage with or disengage from the wheel mount.
9. The wheeled carrying apparatus according to claim 6 , wherein the link actuator is rotatable along with the handle frame from the second position to the first position to relax the linking part so that the wheel mount latch is allowed to engage and lock the wheel mount, and from the first position to the second position to pull the linking part and urge the wheel mount latch to disengage and unlock the wheel mount.
10. The wheeled carrying apparatus according to claim 6 , wherein the handle frame is pivotally coupled to the standing frame about a pivot axis, and the link actuator is rotatable along with the handle frame about the pivot axis relative to the standing frame.
11. The wheeled carrying apparatus according to claim 1 , wherein
the wheel mount defines a first wheel mount carrying a first wheel and pivotally connected with the standing frame, the first wheel being rotatable relative to the first wheel mount about a first wheel axis,
the locking assembly defines a first locking assembly including a first wheel mount latch,
the wheeled carrying apparatus further comprises:
a second wheel mount carrying a second wheel and pivotally connected with the standing frame, the second wheel being rotatable relative to the second wheel mount about a second wheel axis; and
a second locking assembly including a second wheel mount latch connected with the standing frame, the second wheel mount latch being adapted to engage and thereby rotationally lock the second wheel mount with respect to the standing frame, and adapted to disengage and thereby unlock the second wheel mount so that the second wheel mount is rotatable relative to the standing frame for changing an orientation of the second wheel axis,
the actuating assembly respectively couples the first wheel mount latch and the second wheel mount latch to the handle frame so that each of the first wheel mount latch and the second wheel mount latch is movable for locking engagement or unlocking disengagement in response to a rotation of the handle frame,
the cable assembly includes a first flexible part and a second flexible part, and
the release mechanism is configured to transmit a drawing force induced by an actuation of the operating part through the first flexible part for unlocking the first wheel mount when the handle frame is in the first position, and through the second flexible part for unlocking the second wheel mount when the handle frame is in the second position.
12. The wheeled carrying apparatus according to claim 11 , wherein the first flexible part and the second flexible part are alternately stretched or loosened as the handle frame rotates between the first position and the second position.
13. The wheeled carrying apparatus according to claim 11 , wherein the first flexible part loosens and is unable to transmit a drawing force induced by an actuation of the operating part when the handle frame is in the second position, and the second flexible part loosens and is unable to transmit a drawing force induced by an actuation of the operating part when the handle frame is in the first position.
14. The wheeled carrying apparatus according to claim 11 , wherein the cable assembly further includes a cable respectively connected with the operating part and the first and second flexible parts, each of the first and second flexible part being movable relative to the cable to become stretched or to loosen as the handle frame rotates between the first position and the second position.
15. The wheeled carrying apparatus according to claim 11 , wherein any of the first and second flexible part includes a cable portion, a cord, a rope, a wire, a string, a band, a ribbon or a strip.
16. The wheeled carrying apparatus according to claim 11 , wherein the actuating assembly includes a link actuator movably linked to the handle frame, a first linking part coupling the first wheel mount latch to the link actuator, and a second linking part coupling the second wheel mount latch to the link actuator.
17. The wheeled carrying apparatus according to claim 16 , wherein the first flexible part is connected with the first linking part, and the second flexible part is connected with the second linking part.
18. The wheeled carrying apparatus according to claim 16 , wherein the handle frame is pivotally coupled to the standing frame about a pivot axis, and the link actuator is rotatable along with the handle frame about the pivot axis relative to the standing frame.
19. The wheeled carrying apparatus according to claim 16 , wherein the link actuator is rotatable along with the handle frame from the second position to the first position to relax the first linking part and meanwhile pull the second linking part, and from the first position to the second position to pull the first linking part and meanwhile relax the second linking part.
20. The wheeled carrying apparatus according to claim 16 , wherein the first and second linking parts are defined from a single cable that is attached to the link actuator.