driving force receiver

Abstract

The invention discloses a driving force receiving assembly for receiving the rotating force of the driving head of an image forming device and transmitting the rotating force to a photosensitive drum so as to drive the photosensitive drum to rotate. The driving force receiving assembly comprises at least two symmetrically arranged power receiving parts, a driving matching part and a power transmission part, wherein the at least two symmetrically arranged power receiving parts are engaged with an engaging part of the driving head of the image forming device; the driving matching part is matched with the photosensitive drum; and the power transmission part is connected to the power receiving part and the driving matching part. According to the driving force receiving assembly, the two symmetrically arranged power receiving parts are engaged with the driving head in the manner that the minimum value L of the length of a connecting line between any two points in a projection area on a plane in the direction vertical to the installation direction of a processing cartridge meets the formula that L is greater than or equal to D / 2 and smaller than or equal to D+H, wherein D is the maximum outer diameter of the driving head vertical to the rotation axis of the driving head, and H is the height of the outermost point of a contour surface of the driving head, extruding out of an engaging part installation position, of the engaging part of the driving head. According to the driving force receiving assembly, driving force transmission can be realized stably and reliably, and the smooth falling / taking of the processing cartridge can be guaranteed.

Description

technical field [0001] The present invention relates to a process cartridge having a photosensitive drum used in a laser printer, copier or facsimile machine, and more particularly, to a driving force receiving assembly used on the photosensitive drum in the process cartridge. Background technique [0002] Electrophotographic image forming apparatuses such as laser printers, copiers, facsimile machines, etc. usually have a process cartridge inside, and the process cartridge can be detached from the electrophotographic image forming apparatus. Existing process cartridges mainly include the following categories: an integrated box in which the photosensitive drum and the developing device, charging device and cleaning device are arranged together, and an integrated box in which the photosensitive drum and the charging device are arranged together, or the photosensitive drum and the developing device are arranged together split box. Whether it is an integrated process cartridge...

AI Technical Summary

Problems solved by technology

[0004] The method of using the swing rod to assist the telescopic method or the main machine door cover to assist the push of the swing rod depends on the structure of the machine, the compatibility is not good, and there is a problem that the machine is not in place or it is difficult to take it out; There are problems such as slippage caused by the failure of the drive parts to mesh with the drive head of the main engine when turning in at certain angles when landing

Moreover, no matter it is a process box that adopts a pendulum-assisted telescopic mode or a main machine door cover that assists in pushing the pendulum, or a process box that is created and dismantled by force, the drive head must be in contact with the drive during the process of loading / unloading the process box. The drive claws of the force receiving component are in contact. If the position is not appropriate, there will be problems such as the drive claw of the drive force receiving component meshing with the drive head of the main engine, etc.

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