Transmission device for a photosensitive drum

Patent metadata

Field	Value
Publication number	US-10534308-B2
Application number	US-201715714740-A
Country	US
Kind code	B2
Filing date	Sep 25, 2017
Priority date	Mar 24, 2015
Publication date	Jan 14, 2020
Grant date	Jan 14, 2020

Abstract

A transmission device includes a gear member, an intermediate member removably attached to the gear member and including a guiding groove, and a transmitter including a shaft, the shaft having at least one protrusion extending radially outward from the shaft, and the guiding groove is shaped such that the protrusion is movable along the guiding groove in an axial direction and rotatable relative to the guiding groove.

First claim

What is claimed is:

1. A transmission device, comprising:
a gear member;
an intermediate member removably attached to the gear member and including a guiding groove; and
a transmitter including a shaft, the shaft having at least one protrusion extending radially outward from the shaft,
wherein the guiding groove is shaped to limit movement of the protrusion along the guiding groove in an axial direction, while allowing rotation of the transmitter relative to the guiding groove, when the transmission device is assembled.

2. The transmission device according to claim 1 , wherein:
the intermediate member includes an introducing groove on a top face of the intermediate member and at least one retention member that forms the guiding groove; and
the introducing groove provided on the top face of the intermediate member is sized to allow the protrusion to pass through the introducing groove when the transmitter is assembled to the intermediate member.

3. The transmission device according to claim 2 , wherein the guiding groove includes an opening to allow the protrusion to pass through the introducing groove when the transmitter is assembled to the intermediate member.

4. The transmission device according to claim 1 , wherein:
at least one inner wall ledge and at least one receiving member are provided on an inside surface of the gear member;
the intermediate member includes at least one protrusion extending radially outward; and
the receiving member of the gear member includes an opening to receive the protrusion of the intermediate member.

5. The transmission device according to claim 4 , wherein the opening of the receiving member of the gear member is arranged such that the intermediate member is removably attached within the gear member by axially inserting the intermediate member into the gear member and rotating the gear member until the protrusion of the intermediate member is positioned within the opening of the receiving member.

6. The transmission device according to claim 2 , wherein:
the at least one retention member of the intermediate member includes a first retention member and a second retention member disposed apart from the first retention member with a gap being formed from the first retention member; and
the gap is sized to allow the protrusion to pass through the gap after passing through the introducing groove when the transmitter is assembled to the intermediate member.

Assignees

• Mitsubishi Chem Corp
• Gen Plastic Ind Co Ltd

Inventors

• Ikeda Shuichi
• Matsuoka Yohei

Classifications

• G03G21/186

  Axial couplings · CPC title

• G03G15/757 Primary

  Drive mechanisms for photosensitive medium, e.g. gears · CPC title

• G03G21/1647

  Mechanical connection means · CPC title

• G03G2221/1657

  transmitting mechanical drive power · CPC title