Patent RU-2521160-C2 (RU)
Title: Part transmitting rotation force
Inventor: UENO TAKAKHITO
IPC: G03G21/18
Filed: 2012-07-18
Granted: 2014-06-27
Abstract: FIELD: machine building.SUBSTANCE: present invention relates to a part, transmitting rotation force, for an electrophotographic process cartridge, image formation electrophotographic device into which the process cartridge can be installed and replaced, and a block of an electrophotographic photosensitive drum. The proposed connection elements (150) engaged with the electrophotographic photosensitive drum (107) and rotated around the axis (L2) of the connection element by the rotation force taken up from the engaging part (180+182) of a basic unit comprise a driving shaft (180) and a part (182) applying the rotation force, with the latter part being provided on the driving shaft to rotate the photosensitive drum; the photosensitive drum can be removed from the basic unit in the removal direction, in essence, perpendicular to the axial direction (L3) of the driving shaft. The connection element comprises: a connection end part (150b) intended for coupling with the photosensitive drum and including a part (150h) transmitting the rotation force for the rotation force transmission to the photosensitive drum; a free end part (150a) including (ii - i) a rotation force taking up part (150e) engaged with the rotation force applying part to take up the rotation force from the engaging part of the basic unit, (ii - ii) a deepened part (150z) for the engagement with the free part of the driving shaft, the deepened part is in connection on the side of the rotation force taking up part being on the side of the connection end part in relation to the direction of the connection element axis and being inside the rotation force taking up part in relation to the direction perpendicular to the connection element axis, and a connection part (150c) coupling the connection end part and the free end part with each other, at that the rotation force taking up part is placed outside the connection part if seen in the direction of the connection element axis, and when the photosensitive drum with which the connection element is engaged is removed from the basic unit in the removal direction, the connection element can be turned so that the side of the rotation force taking up part of the connection element axis is placed up to the side of the rotation force transmitting part of the connection element axis in relation to the removal direction; the connection element can be disengaged from the engaging part of the basic unit by the above turning movement.EFFECT: technical result of the implementation of the proposed group of inventions consists in the creation of a rotation force transmitting part for a process cartridge, photosensitive drum block used in the process cartridge and an image formation electrophotographic device into which the process cartridge can be installed and replaced, the replacement can provide for the solution of the above problems of known process cartridges; also the result is the creation of a rotation force transmitting part for a process cartridge able to smoothly rotate the photosensitive drum when installed in the basic unit not equipped by a mechanism to move the connection element on the basic unit side in the direction of its axial line, to transmit the rotation force to the photosensitive drum by opening and closing of the basic unit cover; one more goal of the present invention is the creation of a rotation force transmitting part for a photosensitive drum block used in the process cartridge and an image formation electrophotographic device into which the process cartridge can be installed and from which it can be removed.66 cl, 112 dwg