Pressing and driving mechanism and electric screwdriver containing the same

    公开(公告)号:US11833643B2

    公开(公告)日:2023-12-05

    申请号:US17732704

    申请日:2022-04-29

    Inventor: Kwok Ting Mok

    CPC classification number: B25B21/008 B25B21/02

    Abstract: A pressing and driving mechanism adapted for use with an electric screwdriver, the pressing and driving mechanism including a housing, an output assembly connected to the housing for sliding movement relative to the housing, an anvil coupled to the output assembly for sliding movement therewith relative to the housing and configured to receive rotational impacts, a shuttle coupled to the output assembly for movement therewith relative to the housing, a terminal assembly connected to the shuttle and movable with the same, and a printed circuit board fixed relative to the housing and adapted to be in mechanical contact with the terminal assembly. The terminal assembly and the printed circuit board form a potentiometer with a resistance value that is variable in dependence upon a position of the terminal assembly relative to the printed circuit board.

    Pressing and driving mechanism and electric screwdriver containing the same

    公开(公告)号:US11345002B2

    公开(公告)日:2022-05-31

    申请号:US16601197

    申请日:2019-10-14

    Inventor: Kwok Ting Mok

    Abstract: A pressing and driving mechanism, adapted for use in an electric screwdriver, includes a housing, an output member connected to the housing and movable relative to the housing with user intervention, a first adjustment member connected to the output member and moving along with the latter, and a second adjustment member fixed relative to the housing. The second adjustment member is adapted to be in mechanical contact with the first adjustment member. The first adjustment member moves relative to the second adjustment member when the output member moves relative to the housing, whereby the pressing and driving mechanism actively or passively outputs a continuously changing signal. The present invention can realize the function of automatically changing the output torque/speed with the pressing depth when the electric screwdriver is pressed by the user toward the wall or other workpiece.

    COLLET
    4.
    发明申请
    COLLET 有权

    公开(公告)号:US20230001492A1

    公开(公告)日:2023-01-05

    申请号:US17852809

    申请日:2022-06-29

    Abstract: A chuck for use with a rotary power tool having an output spindle. The chuck includes a base and an inner sleeve threadedly coupled to the base. The inner sleeve has a central aperture. A collet is disposed within the central aperture of the inner sleeve and configured to be engaged by a portion of the inner sleeve to be tightened or untightened. The chuck further includes an outer sleeve surrounding the inner sleeve, and a detent member disposed between the inner sleeve and the outer sleeve. The detent member is coupled for co-rotation with the outer sleeve and configured to selectively transmit torque from the outer sleeve to the inner sleeve. When the collet is tightened, rotation of the outer sleeve causes axial displacement of the detent member relative to the inner sleeve as the outer sleeve and the detent member rotate relative to the inner sleeve.

    PRESSING AND DRIVING MECHANISM AND ELECTRIC SCREWDRIVER CONTAINING THE SAME

    公开(公告)号:US20220250215A1

    公开(公告)日:2022-08-11

    申请号:US17732704

    申请日:2022-04-29

    Inventor: Kwok Ting Mok

    Abstract: A pressing and driving mechanism adapted for use with an electric screwdriver, the pressing and driving mechanism including a housing, an output assembly connected to the housing for sliding movement relative to the housing, an anvil coupled to the output assembly for sliding movement therewith relative to the housing and configured to receive rotational impacts, a shuttle coupled to the output assembly for movement therewith relative to the housing, a terminal assembly connected to the shuttle and movable with the same, and a printed circuit board fixed relative to the housing and adapted to be in mechanical contact with the terminal assembly. The terminal assembly and the printed circuit board form a potentiometer with a resistance value that is variable in dependence upon a position of the terminal assembly relative to the printed circuit board.

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