A child stroller apparatus includes first and second leg frames, a handle and a latch element. The first leg frame includes a first side segment affixed with a first coupling element. The second leg frame includes a second side segment affixed with a second coupling element that is pivotally connect
A child stroller apparatus includes first and second leg frames, a handle and a latch element. The first leg frame includes a first side segment affixed with a first coupling element. The second leg frame includes a second side segment affixed with a second coupling element that is pivotally connected with the first coupling element about a first pivot axis. The handle includes a third side segment affixed with a third coupling element that is pivotally connected with the first coupling element about a second pivot axis. The latch element is operable to move between a locked position where the latch element locks the first, second and third coupling elements together to hold the handle and the first and second leg frames in a deployed state, and an unlocked position to allow relative rotations between the handle and the first and second leg frames to collapse the stroller apparatus.
대표청구항▼
1. A child stroller apparatus comprising: a first leg frame including a first side segment affixed with a first coupling element, the first coupling element be formed to include a first locking groove;a second leg frame including a second side segment affixed with a second coupling element that is p
1. A child stroller apparatus comprising: a first leg frame including a first side segment affixed with a first coupling element, the first coupling element be formed to include a first locking groove;a second leg frame including a second side segment affixed with a second coupling element that is pivotally connected with the first coupling element about a first pivot axis;a handle including a third side segment affixed with a third coupling element that is pivotally connected with the first coupling element about a second pivot axis spaced apart from the first pivot axis, the third coupling element being formed to include a second locking groove, the first and second locking grooves being radially apart from the second pivot axis; anda latch element pivotally connected with the second coupling element, wherein the latch element is movable between a locked position where the latch element locks the first, second and third coupling elements together to hold the handle and the first and second leg frames in a deployed state, and an unlocked position to allow rotation of the second leg frame about the first pivot axis relative to the first leg frame, and rotation of the handle about the second pivot axis relative to the first leg frame to turn the child stroller apparatus to a collapsed state, the latch element when in the locked position being engaged with the first and second locking grooves, and the latch element when in the unlocked position being disengaged from the first and second locking grooves. 2. The child stroller apparatus according to claim 1, wherein the first and second locking grooves when engaged with the latch element are radially aligned with each other relative to the second pivot axis. 3. The child stroller apparatus according to claim 1, wherein the latch element is biased by a spring force toward a locking position engaged with the first and second locking grooves. 4. The child stroller apparatus according to claim 1, wherein the latch element is connected with an actuator element that extends across a width of the stroller apparatus adjacent to a seat of the stroller apparatus. 5. The child stroller apparatus according to claim 4, wherein the actuator element is pulled upward to unlock the latch element and raise the child stroller apparatus above a ground surface, whereby the handle and the first and second leg frames fold over one another by gravity action. 6. The child stroller apparatus according to claim 4, wherein the actuator element is made of a flexible material. 7. The child stroller apparatus according to claim 4, wherein the second leg frame is mounted with a pulley at a position below a support surface of the seat, and the actuator element extends downward from the latch element, wraps around the pulley and then extends across the width of the stroller apparatus. 8. The child stroller apparatus according to claim 1, wherein the third coupling element includes a stop spaced apart from the second locking groove, and the latch element is further operable to engage with the stop to hold the child stroller apparatus in the collapsed state. 9. The child stroller apparatus according to claim 1, wherein the first, second and third coupling elements respectively includes a first, a second and a third tab, and when the child stroller apparatus is in the deployed state, the second tab is located between and in contact with the first and third tabs. 10. The child stroller apparatus according to claim 9, wherein the third coupling element includes a slot having a cam surface, and the second tab is guided in contact with the cam surface to travel through the slot when the handle and the second leg frame rotate relative to each other, whereby rotational displacements of the handle and the second leg frames are linked with each other. 11. The child stroller apparatus according to claim 1, wherein the first and second coupling elements are assembled with each other via a first pivot connection that defines the first pivot axis, the first and third coupling elements are assembled with each other via a second pivot connection that defines the second pivot axis, and the latch element and the first and second pivot connections are enclosed at least partially in a housing. 12. The child stroller apparatus according to claim 1, wherein the first, second and third coupling elements include plate portions that are assembled adjacent to one another, the first coupling element being disposed between the second and third coupling elements. 13. The child stroller apparatus according to claim 1, wherein the first leg frame is a front leg frame, and the second leg frame is a rear leg frame. 14. The child stroller apparatus according to claim 1, further comprising: a housing adapted to enclose at least partially the latch element, and two pivot connections that define the first and second pivot axes between the first coupling element and the second and third coupling elements; anda lock assembled with the housing, the lock being operable to create an interference that blocks the stroller apparatus from unfolding from the collapsed state to the deployed state. 15. The child stroller apparatus according to claim 14, wherein the lock is made of a resilient material. 16. A child stroller apparatus comprising: a first leg frame including a first side segment affixed with a first coupling element;a second leg frame including a second side segment affixed with a second coupling element, the second coupling element being assembled with the first coupling element via a first pivot connection that defines a first pivot axis, the first and second leg frames defining a left and a right side of the child stroller apparatus;a handle including a third side segment affixed with a third coupling element, the third coupling element being assembled with the first coupling element via a second pivot connection that defines a second pivot axis spaced apart from the first pivot axis, wherein an assembly of the first, second and third coupling elements is such that rotational displacements of the handle and the second leg frame are linked with each other;a latch element pivotally assembled with the second coupling element about a third pivot axis, the first, second and third pivot axes being spaced apart from one another and extending transversally from the left side to the right side, and the latch element being operable to engage with the first and third coupling elements to lock the handle and the first and second leg frames in a deployed state; anda housing at least partially enclosing the latch element, and the first and second pivot connections. 17. The child stroller apparatus according to claim 16, wherein the first, second and third coupling elements respectively include a first, second and third tab, the third coupling element further includes a slot having a cam surface, and the second tab is guided in contact with the cam surface to travel through the slot when the handle and the second leg frame rotate relative to each other. 18. The child stroller apparatus according to claim 17, wherein when the child stroller apparatus is in the deployed state, the second tab is located between and in contact with the first and third tabs. 19. The child stroller apparatus according to claim 16, wherein the latch element is pivotally connected with the second leg frame, and is operable to engage with plate portions of the first and third coupling elements to lock the deployed state. 20. A child stroller apparatus comprising: a front leg frame having a first locking groove;a rear leg frame assembled with the front leg frame via a first pivot connection, the rear leg frame being thereby rotatable relative to the front leg frame about a first pivot axis, the front and leg frames defining a left and a right side of the child stroller apparatus;a handle having a second locking groove and assembled with the rear leg frame via a second pivot connection, the handle being thereby rotatable relative to the rear leg frame about a second pivot axis; anda latch element pivotally mounted with the rear leg frame about a third pivot axis, the first, second and third pivot axes being spaced apart from one another and extending transversally from the left side to the right side of the child stroller apparatus, and the latch element being operable to releasibly engage with the first and second locking grooves so as to hold the child stroller apparatus in a deployed state. 21. The child stroller apparatus according to claim 20, further including a housing that encloses at least partially the latch element, and the first and second pivot connections. 22. The child stroller apparatus according to claim 20, further including a seat, and wherein the rear leg frame is mounted with a pulley at a position below a support surface of the seat, and an actuator element that is connected to the latch element and extends downward from the latch element, wraps around the pulley and then upwardly passes through an opening of the seat. 23. The child stroller apparatus according to claim 1, wherein the latch element is rotatable about a third pivot axis relative to the second coupling element, the first, second and third pivot axes being spaced apart from one another and extending transversally from a left side to a right side of the child stroller apparatus. 24. The child stroller apparatus according to claim 20, wherein the first and second locking grooves when engaged with the latch element are aligned with each other, and the second locking groove rotationally displaces away from the first locking groove when the handle rotates relative to the front leg frame from the deployed state to a collapsed state of the child stroller apparatus.
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이 특허에 인용된 특허 (9)
Kassai Kenzou (Osaka JPX), Baby carriage grip rod locking mechanism.
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