DOOR CLOSING DEVICE WITH MULTI-RATIO RACK AND PINION

    公开(公告)号:US20180252015A1

    公开(公告)日:2018-09-06

    申请号:US15908195

    申请日:2018-02-28

    Abstract: A door-closing device connectable by a linkage assembly between a door and a door frame includes a piston linearly movable between a door-open position and a door-closed position toward which the piston is biased. The piston has first and second sets of rack teeth disposed thereon. A pinion gear is mounted on a rotatable shaft coupled to the linkage assembly, the pinion gear having a first set of gear teeth along a first circumferential portion for engagement with the first set of rack teeth, and a second set of gear teeth along a second circumferential portion for engagement with the second set of rack teeth, the engagement between the first set of pinion gear teeth and the first set of rack teeth providing a first gear ratio, and the engagement of the second set of pinion gear teeth with the second set of rack teeth providing a second gear ratio.

    HINGE
    88.
    发明申请
    HINGE 审中-公开

    公开(公告)号:US20170167171A1

    公开(公告)日:2017-06-15

    申请号:US15444344

    申请日:2017-02-28

    Applicant: Hai Fu

    Inventor: Hai Fu

    Abstract: A hinge used for being installed between a door leaf and a door frame or between a sash and a window frame (7). The hinge includes a gear and rack unit and an inclined draw bar (1). The gear and rack unit is installed on the door frame or window frame (7). A gear (5) is rotatably installed on the door frame or window frame (7). A rack is located on one side of the gear (5). The gear (5) is meshed with the rack. A gear installation portion (51) is arranged on one side of the gear (5). Both ends of the inclined draw bar (1) are installed on the door leaf and door frame or the sash and window frame (7) respectively. According to the present invention, the problem that the existing hinge is unreasonably stressed and prone to damage is effectively solved.

    OPENING AND CLOSING APPARATUS AND IMAGE FORMING APPARATUS
    89.
    发明申请
    OPENING AND CLOSING APPARATUS AND IMAGE FORMING APPARATUS 有权
    打开和关闭装置和图像形成装置

    公开(公告)号:US20170067278A1

    公开(公告)日:2017-03-09

    申请号:US15079763

    申请日:2016-03-24

    Inventor: Yoshiya TOMATSU

    Abstract: There is provided an opening and closing apparatus, including: a main body; an openable body pivoting between a closed position and an open position; a connecting part connecting an end of the main body and an end of the openable body; a rack provided in one of the main body and the openable body; and an arm, wherein a part, of a pitch line of the rack, which makes contact with a pitch circle of the pinion in a state that the openable body is positioned in the vicinity of the closed position is an inclined line which is inclined to approach the other of the main body and the openable body having no rack, as the inclined line is farther away from the connecting part with the openable body being in the closed position.

    Abstract translation: 提供一种打开和关闭装置,包括:主体; 可打开的主体,其在关闭位置和打开位置之间枢转; 连接部,其连接所述主体的端部和所述可打开体的端部; 设置在所述主体和所述可打开体之一中的架子; 以及臂,其中,在所述可开启体位于所述关闭位置附近的状态下与所述小齿轮的节圆接触的所述齿条的俯仰线的一部分是倾斜于 接近主体和具有无齿条的可打开体的另一个,因为倾斜线远离连接部分,其中可打开体处于关闭位置。

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