Rotary-body support structure

Patent metadata

Field	Value
Publication number	US-11029620-B2
Application number	US-202016816635-A
Country	US
Kind code	B2
Filing date	Mar 12, 2020
Priority date	Sep 24, 2019
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

A rotary-body support structure includes: a rotary body including a rotary shaft and a contact portion spirally wound around the rotary shaft; and bearing parts that rotatably support the rotary body. The amount of engagement of the rotary body with a contact body that is in contact with the contact portion of the rotary body changes when the rotary body moves toward one side in a rotation axis direction.

First claim

What is claimed is:

1. A rotary-body support structure comprising:
a rotary body including a rotary shaft and a flexible contact portion spirally wound around the rotary shaft; and
bearing parts that rotatably support the rotary body,
wherein the amount of engagement of the rotary body with a contact body that is in contact with the contact portion of the rotary body changes when the rotary body moves toward one side in a rotation axis direction.

2. The rotary-body support structure according to claim 1 , wherein
the bearing parts include contact members having a larger diameter than the rotary shaft and fitted on the rotary shaft of the rotary body, and inclined portions that are in contact with and support the contact members, and
the contact members are supported so as to be movable in a direction intersecting the rotation axis direction when the rotary body moves in the rotation axis direction.

3. The rotary-body support structure according to claim 2 , wherein the contact members have a ring shape with a circular outer circumference.

4. The rotary-body support structure according to claim 2 , wherein the contact members have a tapered shape with an outer circumference tapered in the rotation axis direction.

5. The rotary-body support structure according to claim 2 , wherein the contact members are ball bearings including outer races in contact with the inclined portions and inner races attached to the rotary shaft.

6. The rotary-body support structure according to claim 2 , wherein the contact member is fitted on one end of the rotary shaft.

7. The rotary-body support structure according to claim 3 , wherein the contact member is fitted on one end of the rotary shaft.

8. The rotary-body support structure according to claim 4 , wherein the contact member is fitted on one end of the rotary shaft.

9. The rotary-body support structure according to claim 5 , wherein the contact member is fitted on one end of the rotary shaft.

10. The rotary-body support structure according to claim 6 , wherein the inclined portion is formed on one side corresponding to the one end of the rotary shaft and is in contact with the rotary shaft, and the contact member having a tapered shape with an outer circumference tapered in the rotation axis direction is fitted on the other end of the rotary shaft.

11. The rotary-body support structure according to claim 7 , wherein the inclined portion is formed on one side corresponding to the one end of the rotary shaft and is in contact with the rotary shaft, and the contact member having a tapered shape with an outer circumference tapered in the rotation axis direction is fitted on the other end of the rotary shaft.

12. The rotary-body support structure according to claim 8 , wherein the inclined portion is formed on one side corresponding to the one end of the rotary shaft and is in contact with the rotary shaft, and the contact member having a tapered shape with an outer circumference tapered in the rotation axis direction is fitted on the other end of the rotary shaft.

13. The rotary-body support structure according to claim 9 , wherein the inclined portion is formed on one side corresponding to the one end of the rotary shaft and is in contact with the rotary shaft, and the contact member having a tapered shape with an outer circumference tapered in the rotation axis direction is fitted on the other end of the rotary shaft.

14. The rotary-body support structure according to claim 1 , wherein
the contact body is a charging roller that is in contact with and charges a photoconductor drum while rotating, and
the rotary body is a cleaning roller having the contact portion made of an elastic member spirally wound around the outer circumference of the rotary shaft, the cleaning roller being in contact with the charging roller and cleaning the surface of the charging roller while rotating.

15. The rotary-body support structure according to claim 2 , wherein
the contact body is a charging roller that is in contact with and charges a photoconductor drum while rotating, and
the rotary body is a cleaning roller having the contact portion made of an elastic member spirally wound around the outer circumference of the rotary shaft, the cleaning roller being in contact with the charging roller and cleaning the surface of the charging roller while rotating.

16. The rotary-body support structure according to claim 1 , wherein
the contact body is a photoconductor drum, and
the rotary body is a cleaning brush including the contact portion having a brush spirally wound around the outer circumference of the rotary shaft, the cleaning brush being in contact with the photoconductor drum and cleaning the surface of the photoconductor drum while rotating.

17. The rotary-body support structure according to claim 2 , wherein
the contact body is a photoconductor drum, and
the rotary body is a cleaning brush including the contact portion having a brush spirally wound around the outer circumference of the rotary shaft, the cleaning brush being in contact with the photoconductor drum and cleaning the surface of the photoconductor drum while rotating.

18. The rotary-body support structure according to claim 16 , wherein the cleaning brush is rotationally driven via a belt.

19. The rotary-body support structure according to claim 1 , wherein
the contact body is a floor, and
the rotary body is a vacuum-cleaner brush including the contact portion having a brush spirally wound around the outer circumference of the rotary shaft, the vacuum-cleaner brush being in contact with and cleaning the floor while being rotated by air suction.

20. The rotary-body support structure according to claim 2 , wherein
the contact body is a floor, and
the rotary body is a vacuum-cleaner brush including the contact portion having a brush spirally wound around the outer circumference of the rotary shaft, the vacuum-cleaner brush being in contact with and cleaning the floor while being rotated by air suction.

Assignees

• Fuji Xerox Co Ltd

Inventors

• Tsuda Yu

Classifications

• B08B1/34

  rotating about an axis parallel to the surface · CPC title

• G03G15/0225 Primary

  provided with means for cleaning the charging member · CPC title

• G03G21/0035 Primary

  using a brush; Details of cleaning brushes, e.g. fibre density (G03G21/0064 takes precedence; magnetic brushes G03G21/0047) · CPC title

• F16C2314/00

  Personal or domestic articles, e.g. household appliances such as washing machines, dryers · CPC title

• F16C13/024

  adjustable for positioning, e.g. radial movable bearings for controlling the deflection along the length of the roll mantle · CPC title