US 2019/0094791 A1Published application

Document cover closer and office equipment having the same

AssigneeKem Hongkong Limited

InventorTetsuo Kondo

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Abstract

An object of the invention is to provide a document cover closer as well as office equipment having such a document cover closer, wherein it is possible to finely adjust a spring force and to set its adjusting range within a wide range, as well as to downsize the apparatus. To achieve the above-mentioned object, in a document cover closer 5 according to the invention, a supporting part 20 is rotatably attached to an attaching part 10 being a base via a first hinge pin 81, and a lift part 30 to which the document cover is fixed is rotatably attached to the supporting part 20. In an elastic force adjusting portion 60, as the document cover is opened and the supporting part 20 is erected, the spring force adjusting screw 80 extending perpendicular to an axial direction of the first hinge pin 81 is rotated; then, as the spring force adjusting cam plate 61 moves in a forward and backward direction along cam tracks of cam surfaces 52L, 52R extending along a forward and backward direction of the second spring receiving portion 42, a spring sheet plate 70 as well moves integrally to compress or expand a first coil spring 43 and the second coil spring 44 to adjust a spring force.

Claims7

Dependent claims

A document cover closer for openably and closably attaching a document cover to a main body, said document cover closer comprising:

an attaching member attached to said main body;
a document cover holding portion holding said document cover and rotatably attached to said attaching member via a hinge shaft;
an urging portion, an elastic force of an elastic member being accumulated and released as accompanied by an opening and a closing operation of said document cover;
an elastic force adjusting portion provided to adjust said elastic force of said urging portion;
and
said elastic force adjusting portion comprising cam portions in a direction perpendicular to an axial direction of said hinge shaft, cam surfaces, each having a cam track changing in height along an elastic force applying direction being formed thereon, an elastic force adjusting cam plate movable in a forward and backward direction along cam tracks with sliding on said cam surfaces, an elastic member sheet plate portion disposed between said elastic force adjusting cam plate and said elastic member so as to be movable integrally with said elastic force adjusting cam plate in an elastic force applying direction, while said elastic force adjusting cam plate moving on said cam tracks, and
an elastic force adjusting screw comprising a screw head portion facing a front face of said document cover in an opened state of said document cover and a screw portion screwed with said elastic force adjusting cam plate, said screw head portion being rotated to move said elastic force adjusting cam plate in said forward and backward direction.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/114,630Filed 28 Aug 2018
Priority: JP 2017-16423829 Aug 2017
Published: 28 Mar 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

G03G 21/1633
Means to access the interior of the apparatus: using doors or covers
E05F 1/105
With a coil spring perpendicular to the pivot axis: with a compression spring
G03G 15/60
Apparatus for electrographic processes using a charge pattern: apparatus which relate to the handling of originals
E05F 3/20
Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices: in hinges

Family

US 10,788,785 B2Related patent
US 2019/0094791 A1This patent

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

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