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1. 发明授权

US4090274A Gravity door closer 失效
标题翻译：重力门关闭
公开(公告)号：US4090274A
公开(公告)日：1978-05-23
申请号：US752651
申请日：1976-12-20
申请人： Jack Bourgeois
发明人： Jack Bourgeois
IPC分类号： E05D7/08 , E05F1/06
CPC分类号： E05D7/081 , E05F1/063 , E05Y2900/31 , F25D2323/024 , Y10T16/53992
摘要： A gravity door closer for a refrigerated cabinet having a storage area to which access is gained through a door pivotable between an open position and a closed position about a vertical axis defined by upper and lower hinge units wherein a pair of vertically telescoping journalled bushings have hubs respectively mounted in openings formed in the lower surface of the door and a bracket on the cabinet, the bushings including a plurality of intermeshing circumferentially spaced camlobes defined by converging side walls terminating at flat tip walls, the side walls interengaging in the closed position and a predetermined open position such that the weight of the door tends to cause the camlobes to bottom in the grooves therebetween to establish detent positions, the flat tip walls of the camlobes contacting providing infinite door positioning in a sector between said detent positions, the torque applied to the bushings tending to rotate the same in the openings being resisted by torque arms attached to the door and the bracket at locations spaced from the hubs thereby avoiding localized shearing of the material thereabout.
摘要翻译：一种用于冷藏柜的重力门关闭装置，其具有通过可由围绕由上下铰链单元限定的垂直轴线在打开位置和关闭位置之间枢转的门而进入的存储区域，其中一对垂直伸缩的轴颈衬套具有毂分别安装在形成在门的下表面中的开口和机柜上的支架上，衬套包括多个相互啮合的圆周间隔开的凸起，所述多个相互啮合的周向间隔开的突出部限定在终止于平坦顶端壁处的会聚侧壁，在闭合位置相互接合的侧壁和预定的打开位置，使得门的重量倾向于使凸轮在它们之间的凹槽中的底部以建立制动位置，凸起的平坦顶端接触提供无限门定位在所述制动位置之间的扇区中，施加到倾向于在开口中旋转的衬套被转矩臂抵抗在与轮毂间隔开的位置处附接到门和支架，从而避免了其周围材料的局部剪切。

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