Constant-velocity joint and image forming device

Abstract

The present invention provides a lightweight constant velocity coupling that does not require grease lubrication. The pivot part (11) is assembled in the outer wheel (1), and the outer wheel (1) has a hexagonal hollow hole surrounded by 6 flat surfaces (2) parallel to the axis, and the pivot part (11 ), a first spherical surface (12a) and a second spherical surface (12b) are formed along the circumferential direction, and the first spherical surface (12a) is biased from the central position of the flat surface (2) in the circumferential direction to the circumferential direction The second spherical surface ( 12 b ) is in contact with the flat surface at a position offset from the central position to the other side in the circumferential direction. Since the outer ring 1 and the pivot member (11) are molded of synthetic resin, grease lubrication is not required, and the weight of the constant velocity coupling can be reduced.

Description

technical field [0001] The present invention relates to a constant velocity joint (joint) that connects two shafts, a drive shaft and a driven shaft, to transmit the power of the drive shaft to the driven shaft, and a copier and a copier using the constant velocity joint. An image forming device of a laser printer (LBP). Background technique [0002] In the past, the known image forming apparatus is as follows, that is, on the outer periphery of the photosensitive drum rotating in one direction, a charger, an exposure mechanism, a developing device, and a transfer charger are provided, and the outer periphery of the photosensitive drum is charged by the above-mentioned charger. After the whole is charged in the same way, the exposure mechanism exposes the image based on the image information to form an electrostatic latent image, and the developer supplies toner to the electrostatic latent image to form a toner image, and then passes through the transfer charger. This toner...

AI Technical Summary

Problems solved by technology

[0016] Moreover, when used in food manufacturing equipment, the food will be contaminated due to the leakage of grease, so it is necessary to take measures such as installing boots to prevent the leakage of grease, which will reduce the number of parts. increase, the cost also increases accordingly, leading to the large-scale constant velocity coupling

[0017] Moreover, when used in an image forming apparatus, since the dust cover needs to be detached every time the constant velocity coupling is assembled or disassembled, maintenance is difficult.

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