Grounding structure for electrically grounding equipment and image forming apparatus including the same

Patent metadata

Field	Value
Publication number	US-10386783-B2
Application number	US-201816161740-A
Country	US
Kind code	B2
Filing date	Oct 16, 2018
Priority date	Oct 18, 2017
Publication date	Aug 20, 2019
Grant date	Aug 20, 2019

Abstract

An grounding structure of an equipment includes a coil spring provided between a first member of an equipment side and a second member, which includes a metal plate member, of a ground side, wherein the first member and the second member are disposed opposite to each other, one end of the coil spring is brought into press contact with the first member, and the other end of the coil spring is brought into press contact with the second member. An engraved groove is formed at an abutting point of the second member with the coil spring, and is formed such that at least a part of a convex burr part generated along an end edge of the engraved groove abuts the other end of the coil spring.

First claim

What is claimed is:

1. A grounding structure of an equipment, comprising:
a coil spring provided between a first member of an equipment side and a second member, which includes a metal plate member, of a ground side, the first member and the second member being disposed opposite to each other, one end of the coil spring being brought into press contact with the first member and the other end of the coil spring being brought into press contact with the second member,
wherein an engraved groove is formed at an abutting point of the second member with the coil spring, and the engraved groove is formed such that at least a part of a convex burr part generated along an end edge of the engraved groove abuts the other end of the coil spring.

2. The grounding structure of the equipment of claim 1 , wherein a surface of a side of the other end of the coil spring is a non-grinding surface.

3. The grounding structure of the equipment of claim 1 , wherein an end part of the other end of the coil spring has a bending part obtained by bending a material of the coil spring in a zigzag shape, and
when the coil spring is set between the first member and the second member, the coil spring is compressed and the bending part is pressed to the coil spring and is deformed in a linear shape, so that an abutting point of the bending part with the second member grinds a protective film of a surface of the second member.

4. The grounding structure of the equipment of claim 3 , wherein a distal end part of the bending part is sharpened to abut the surface of the second member.

5. The grounding structure of the equipment of claim 1 , wherein the engraved groove has a radial shape widened from a central vicinity of the coil spring to a radial outside of the coil spring when viewed from a side of the first member.

6. The grounding structure of the equipment of claim 1 , wherein the first member also includes a metal plate member, and
an engraved groove having a same configuration as a configuration of the engraved groove is formed at an abutting point of the first member with one end of the coil spring.

7. An image forming apparatus comprising the grounding structure of the equipment of claim 1 .

Assignees

• Kyocera Document Solutions Inc

Inventors

• HATTORI Mitsuki
• Okauchi Yoshifumi
• Hirahara Kazuhisa

Classifications

• G03G21/1652

  Electrical connection means · CPC title

• G03G21/1604

  Arrangement or disposition of the entire apparatus · CPC title

• G03G15/80

  Details relating to power supplies, circuits boards, electrical connections · CPC title

• H01R2201/06

  for computer periphery · CPC title

• G03G21/1647 Primary

  Mechanical connection means · CPC title