US 10,308,453 B2Granted

Sheet feeding apparatus and image forming apparatus

AssigneeCanon Kabushiki Kaisha

InventorKozo Inoue

Life of this patent

Estimating the term…

Loading patent…

Abstract

A sheet feeding apparatus includes a sheet supporting portion to support a sheet, a feeding portion to feed the sheet, a swing unit to swingably support the feeding portion between a feed position and a separation position, a swing shaft to swingably support the swing unit, an urging portion to urge the swing unit toward the feed position, and a holding portion to hold the swing unit at the separation position against an urging force of the urging portion. The swing unit includes first and second bearing portions to slidingly support the swing shaft, a metal member to hold the first and second bearing portions, and a resin member including a guide surface to guide the sheet fed by the feeding portion.

Claims19

Dependent claims

A sheet feeding apparatus comprising:

a sheet supporting portion configured to support a sheet;
a feeding portion configured to feed the sheet supported by the sheet supporting portion;
a swing unit configured to swingably support the feeding portion between a feed position and a separation position, the feed position being a position at which the feeding portion abuts against the sheet supported by the sheet supporting portion and feed the sheet, the separation position being a position at which the feeding portion is separated from the sheet supported by the sheet supporting portion;
a swing shaft configured to swingably support the swing unit;
an urging portion configured to contact with the swing unit at a first position so as to urge the swing unit toward the feed position;
and
a holding portion configured to contact with the swing unit at a second position so as to hold the swing unit at the separation position against an urging force of the urging portion, the second position being different from the first position in an axial direction of the swing shaft,
wherein the swing unit comprises:
a first bearing portion configured to slidingly support the swing shaft;
a second bearing portion disposed offset to the first bearing portion and configured to slidingly support the swing shaft;
a metal member configured to hold the first bearing portion and the second bearing portion;
and
a resin member having a guide surface configured to guide the sheet fed by the feeding portion,
wherein the metal member comprises:
a body portion which extends in the axial direction and to which the resin member is attached;
a first bearing holding portion that extends from a first end portion, in the axial direction, of the body portion toward a cross direction which crosses the axial direction and that holds the first bearing portion;
and
a second bearing holding portion that extends from a second end portion, in the axial direction, of the body portion toward the cross direction and that holds the second bearing portion.

15 more elements

A sheet feeding apparatus comprising:

a sheet supporting portion configured to support a sheet;
a feeding portion configured to feed the sheet supported by the sheet supporting portion;
a swing unit configured to swingably support the feeding portion between a feed position and a separation position, the feed position being a position at which the feeding portion abuts against the sheet supported by the sheet supporting portion and feed the sheet, the separation position being a position at which the feeding portion is separated from the sheet supported by the sheet supporting portion;
a swing shaft configured to swingably support the swing unit;
an urging portion configured to contact with the swing unit at a first position so as to urge the swing unit toward the feed position;
and
a holding portion configured to contact with the swing unit at a second position so as to hold the swing unit at the separation position against an urging force of the urging portion, the second position being different from the first position in an axial direction of the swing shaft,
wherein the swing unit comprises:
a first bearing portion configured to slidingly support the swing shaft;
a second bearing portion disposed offset to the first bearing portion and configured to slidingly support the swing shaft;
a metal member configured to hold the first bearing portion and the second bearing portion;
and
a resin member having a guide surface configured to guide the sheet fed by the feeding portion,
wherein the metal member receives the urging force of the urging portion and a force from the holding portion at positions different from each other in the axial direction,
wherein the resin member comprises an abutment portion configured to abut against the holding portion,
wherein the holding portion comprises a pressing portion configured to press the abutment portion against the urging force of the urging portion, and
wherein the metal member comprises a contact portion that is in contact with a first surface, of the abutment portion, opposite to a second surface of the abutment portion in a swing direction of the swing unit, the second surface being pressed by the pressing portion.

14 more elements

The sheet feeding apparatus comprising:

a sheet supporting portion configured to support a sheet;
a feeding portion configured to feed the sheet supported by the sheet supporting portion;
a swing unit configured to swingably support the feeding portion between a feed position and a separation position, the feed position being a position at which the feeding portion abuts against the sheet supported by the sheet supporting portion and feed the sheet, the separation position being a position at which the feeding portion is separated from the sheet supported by the sheet supporting portion;
a swing shaft configured to swingably support the swing unit;
a first urging portion configured to contact with the swing unit at a first position so as to urge the swing unit toward the feed position;
a second urging portion;
and
a holding portion configured to contact with the swing unit at a second position so as to hold the swing unit at the separation position against an urging force of the first urging portion, the second position being different from the first position in an axial direction of the swing shaft,
wherein the swing unit comprises:
a first bearing portion configured to slidingly support the swing shaft;
a second bearing portion disposed offset to the first bearing portion and configured to slidingly support the swing shaft;
a metal member configured to hold the first bearing portion and the second bearing portion;
and
a resin member having a guide surface configured to guide the sheet fed by the feeding portion,
wherein the holding portion is configured to move between a holding position and a non-holding position, the holding position being a position at which the holding portion holds the swing unit at the separation position, the non-holding position being a position at which the holding portion is separated from the swing unit and does not hold the swing unit, and
wherein the second urging portion is configured to urge the holding portion toward the holding position.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/837,503Filed 11 Dec 2017
Priority: JP 2016-25009322 Dec 2016
Published: US 2018/0179004 A128 Jun 2018
Granted: 4 Jun 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B65H 3/0684
Rollers or like rotary separators: on moving support, e.g. pivoting, for bringing the roller or like rotary separator into contact with the pile
B65H 1/04
Supports or magazines for piles from which articles are to be separated: adapted to support articles substantially horizontally, e.g. for…
B65H 1/266
With auxiliary supports to facilitate introduction or renewal of the pile: support fully or partially removable from the handling machine, e.g.…
G03G 15/6511
Supplying of sheet copy material; Cassettes therefor: feeding devices for picking up or separation of copy sheets

Family

US 2018/0179004 A1Pre-grant publication · published 28 Jun 2018
US 10,308,453 B2This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

Building an agent or pulling many patents? Use the API or MCP server instead of scraping pages. Get an API key