A brake assembly for a stroller includes left and right braking mechanisms, a connecting member, and left and right operating members interconnected to each other through the connecting member so as to move in opposite directions when operated. Each of the left and right braking mechanisms includes
A brake assembly for a stroller includes left and right braking mechanisms, a connecting member, and left and right operating members interconnected to each other through the connecting member so as to move in opposite directions when operated. Each of the left and right braking mechanisms includes a first engaging member, and a second engaging member movable between engaging and disengaging positions and defining a first cam face. Each of the left and right operating members defines a second cam face which is in sliding contact with a respective first cam face so as to drive the second engaging member to move to the engaging position in an axial direction when the left operating member is operated, and so as to drive the second engaging member to move to the disengaging position when the right operating member is operated.
대표청구항▼
I claim: 1. A brake assembly for a stroller, the stroller including a stroller frame and left and right wheels, each of which is connected to the stroller frame through an axle, said brake assembly comprising: left and right braking mechanisms associated respectively with the left and right wheels
I claim: 1. A brake assembly for a stroller, the stroller including a stroller frame and left and right wheels, each of which is connected to the stroller frame through an axle, said brake assembly comprising: left and right braking mechanisms associated respectively with the left and right wheels for braking the left and right wheels; a connecting member; and left and right operating members to be disposed respectively adjacent to the left and right wheels, adapted to be mounted movably on the stroller frame, and interconnected to each other through said connecting member so as to be movable in opposite directions relative to the stroller frame when operated, said left and right braking mechanisms being adapted to engage respectively and simultaneously the left and right wheels when one of said left and right operating members is operated, said left and right braking mechanisms being adapted to disengage respectively and simultaneously the left and right wheels when the other of said left and right operating members is operated; wherein each of said left and right braking mechanisms includes a first engaging member adapted to be provided on the respective one of the left and right wheels, and a second engaging member adapted to be mounted movably on the stroller frame and movable in an axial direction relative to the axle between an engaging position, in which said second engaging member engages said first engaging member, and a disengaging position, in which said second engaging member is disengaged from said first engaging member; and wherein said second engaging member defines a first cam face that is obliquely angled with respect to said axial direction, each of said left and right operating members defining a second cam face which is obliquely angled with respect to said axial direction and which is in sliding contact with said first cam face of said second engaging member of the respective one of said left and right braking mechanisms so as to drive said second engaging member to move to said engaging position when said one of said left and right operating members is operated; said brake assembly further comprising left and right guiding members adapted to be secured to the stroller frame, each of said left and right guiding members defining a sliding space therein, each of said left and right operating members including an elongated sliding piece that is slidably inserted into said sliding space in a respective one of said left and right guiding members and that is formed with a cam-receiving recess, and a cam piece that defines said second cam face and that is mounted securely in said cam-receiving recess so as to be co-slidable with said sliding piece, said second engaging member including an engaging pin that extends through said cam piece and said sliding space in a respective one of said left and right guiding members for engaging said first engaging member when said sliding piece is moved to a locking position, said engaging pin being disengaged from said first engaging member when said sliding piece is moved to an unlocking position, said second engaging member further including a cam follower that is connected securely to said engaging pin and that defines said first cam face. 2. The brake assembly of claim 1, wherein said cam piece is formed with a cam follower-receiving recess, said second cam face confining an upper side of said cam follower-receiving recess, said cam follower extending into said cam-follower receiving recess, said first cam face of said cam follower being received in said cam follower-receiving recess and facing said second cam face of said cam piece. 3. The brake assembly of claim 2, wherein said first engaging member of each of said left and right braking mechanisms includes a retaining gear that is adapted to be secured to the respective one of the left and right wheels and that defines a plurality of angularly disposed retaining grooves disposed to extend radially relative to the axle, said engaging pin engaging a selected one of said retaining grooves when said left operating member is operated, said engaging pin disengaging the selected one of said retaining grooves when said right operating member is operated. 4. The brake assembly of claim 3, wherein each of said left and right braking mechanisms further includes an urging member that is sleeved on said engaging pin for urging said engaging pin toward the selected one of said retaining grooves. 5. The brake assembly of claim 1, further comprising a positioning unit including a pivot seat that is pivoted to one of said left and right guiding members and that is formed with a tongue, said sliding piece being formed with a groove that engages releasably said tongue when said sliding piece is moved to said locking position and that is disengaged from said tongue when said sliding piece is moved to said unlocking position. 6. The brake assembly of claim 5, wherein said positioning unit further includes an urging member for urging said sliding piece to move toward said unlocking position. 7. The brake assembly of claim 5, wherein said pivot seat is further formed with an elastic arm that abuts elastically and slidingly against said sliding piece so as to provide a resistance against pivoting movement of said pivot seat when said pivot seat is pressed. 8. The brake assembly of claim 1, further comprising a positioning unit having a first elastic tab that is formed on said sliding piece and that is formed with a tongue, and a slit that is formed in one of said left and right guiding members in such a manner so as to form a second elastic tab on said one of said left and right guiding members, said tongue extending into said slit and abutting against a periphery of said slit when said sliding piece is moved to said locking position, said second elastic tab being registered with said first elastic tab and being pressable to move said first elastic tab so as to disengage said tongue from said periphery of said slit. 9. The brake assembly of claim 8, wherein said positioning unit further includes a groove that is formed in said one of said left and right guiding members, said tongue extending into said groove when said sliding piece is moved to said unlocking position. 10. The brake assembly of claim 8, wherein said positioning unit further includes an urging member for urging said sliding piece to move toward said unlocking position. 11. The brake assembly of claim 1, further comprising a positioning unit including a pedal that is pivoted to one of said left and right guiding members, that is pivotable relative to said one of said left and right guiding members between first and second angular positions, and that is connected to said sliding piece for driving sliding movement of said sliding piece, said sliding piece being driven by said pedal to move from said locking position to said unlocking position when said pedal is moved from said first angular position to said second angular position and to move from said unlocking position to said locking position when said pedal is moved from said second angular position to said first angular position. 12. The brake assembly of claim 11, wherein said one of said left and right guiding members is formed with an arcuate slot, said positioning unit further including a connecting pin that extends through said arcuate slot and said sliding piece, said sliding piece being driven by said pedal through said connecting pin. 13. The brake assembly of claim 11, wherein said positioning unit further includes a tongue that is formed on said pedal, and first and second grooves that are formed in said one of said left and right guiding members and that are spaced apart from each other, said tongue engaging releasably said first groove in said one of said left and right guiding members when said pedal is disposed at said first angular position, and engaging releasably said second groove in said one of said left and right guiding members when said pedal is disposed at said second angular position. 14. A brake assembly for a stroller, the stroller including a stroller frame and left and right wheels, each of which is connected to the stroller frame through an axle, said brake assembly comprising: left and right braking mechanisms associated respectively with the left and right wheels for braking the left and right wheels; a connecting member; and left and right operating members to be disposed respectively adjacent to the left and right wheels, adapted to be mounted movably on the stroller frame, and interconnected to each other through said connecting member so as to be movable in opposite directions relative to the stroller frame when operated, said left and right braking mechanisms being adapted to engage respectively and simultaneously the left and right wheels when one of said left and right operating members is operated; wherein each of said left and right braking mechanisms includes a first engaging member adapted to be provided on the respective one of the left and right wheels, and a second engaging member adapted to be mounted movably on the stroller frame and movable in an axial direction relative to the axle between an engaging position, in which said second engaging member engages said first engaging member, and a disengaging position, in which said second engaging member is disengaged from said first engaging member; and wherein said second engaging member defines a first cam face that is obliquely angled with respect to said axial direction, each of said left and right operating members defining a second cam face which is obliquely angled with respect to said axial direction and which is in sliding contact with said first cam face of said second engaging member of the respective one of said left and right braking mechanisms so as to drive said second engaging member to move to said engaging position when said one of said left and right operating members is operated; said brake assembly further comprising left and right guiding members adapted to be secured to the stroller frame, each of said left and right guiding members defining a sliding space therein, each of said left and right operating members including an elongated sliding piece that is slidably inserted into said sliding space in a respective one of said left and right guiding members and that is formed with a cam-receiving recess, and a cam piece that defines said second cam face and that is mounted securely in said cam-receiving recess so as to be co-slidable with said sliding piece, said second engaging member including an engaging pin that extends through said cam piece and said sliding space in a respective one of said left and right guiding members for engaging said first engaging member when said sliding piece is moved to a locking position, said engaging pin being disengaged from said first engaging member when said sliding piece is moved to an unlocking position, said second engaging member further including a cam follower that is connected securely to said engaging pin and that defines said first cam face.
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이 특허에 인용된 특허 (7)
Baechler Philip A. (Yakima WA) Armstrong Timothy O. (Woodinville WA), Baby stroller with park brake.
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