Medium protection device and medium separating and stacking device

Patent metadata

Field	Value
Publication number	US-2016101953-A1
Application number	US-201414893797-A
Country	US
Kind code	A1
Filing date	Apr 9, 2014
Priority date	Jun 12, 2013
Publication date	Apr 14, 2016
Grant date	—

Abstract

The present invention provides a medium protection device and a medium separating and stacking device capable of avoiding damage to a medium when moving the medium along a guide. In a banknote cassette, a guide body is attached to a circumferential side face of a central body of a tongue piece roller in a range not provided with tongue pieces. When feeding out banknotes, the banknote cassette stops the tongue piece roller in a retracted state, thereby positioning an outer circumferential face of the guide body in the vicinity of the surface of a front upper curved portion of a hole in the conveyance guide, such that the hole can be placed in an almost completely blocked state. The present invention can accordingly prevent the vicinity of a corner of a banknote from entering the hole, enabling creasing during conveyance to be forestalled.

First claim

1 . A medium protection device comprising:
a conveyance guide forming a conveyance path of a paper sheet shaped medium; a central shaft that is substantially orthogonal to a direction of progress of the medium along the conveyance path, that is substantially parallel to a face of the medium conveyed on the conveyance path, and that is separated by a predetermined distance from a location on the conveyance guide furthest to the conveyance path side; a tongue piece roller including a central body that has a radius from the central shaft of less than the predetermined distance and that rotates about the central shaft, and one, or two or more, flexible tongue pieces that are provided projecting out from the central body within a predetermined provision range of an outer circumferential portion centered on the central shaft; a through hole formed in the conveyance guide at a portion through which the tongue pieces pass during rotation of the central body about the central shaft; and a guide body that is provided in a non-provision range excluding the provision range of the outer circumferential portion of the central body centered on the central shaft, and that is positioned further outward than the outer circumferential portion.

2 . The medium protection device of claim 1 , wherein:
the conveyance guide includes a curved portion that is curved so as to protrude out toward the opposite side of the central shaft; and the guide body is formed with a lifting face that, when the tongue piece roller has been stopped in a predetermined state with respect to the conveyance path, forms an angle with the direction of progress of a predetermined maximum angle or smaller and is disposed at a decreasing distance to the conveyance path on progression toward the opposite direction to the direction of progress.

3 . The medium protection device of claim 2 , wherein the lifting face of the guide body is a flat face.

4 . The medium protection device of claim 3 , wherein the maximum angle of the lifting face of the guide body when the tongue piece roller has been stopped in the predetermined state with respect to the curved portion is 45°.

5 . The medium protection device of claim 1 , further comprising:
a roller that is configured with a circular column shape centered on the central shaft, and that includes a portion exposed to the conveyance path side through a roller-exposing hole formed in the conveyance guide and contacting the medium on the conveyance path; wherein the conveyance guide includes a curved portion curving in a circular arc shape along an outer circumferential face of the roller; and an outer circumferential face of the guide body has a circular arc shape disposed at a distance from the central shaft of the distance to the curved portion of the conveyance guide or less.

6 . The medium protection device of claim 1 , wherein:
the conveyance guide includes, on a conveyance path side surface, a conveyance guide rib that projects out further to the conveyance path side than the periphery of the conveyance guide rib and that runs along the direction of progress; and a portion of the guide body that is furthest from the central shaft is disposed further to the central shaft side than a ridge portion of the conveyance guide rib.

7 . The medium protection device of claim 1 , wherein
in the guide body, an outer circumferential portion that is furthest from the central shaft differs in distance to the central shaft depending on the position along the central shaft.

8 . The medium protection device of claim 7 , wherein
in the guide body, an outer circumferential portion that is furthest from the central shaft is formed with a guide body rib projecting out further in a direction away from the central shaft than the periphery of the guide body rib.

9 . A medium separating and stacking device comprising:
a space in which a paper sheet shaped medium is stacked; a conveyance guide that is in communication with the space and that forms a conveyance path of the medium; a central shaft that is substantially orthogonal to a direction of progress of the medium along the conveyance path, that is substantially parallel to a face of the medium conveyed on the conveyance path, and that is separated by a predetermined distance from a location on the conveyance guide furthest to the conveyance path side; a tongue piece roller including a central body that has a radius from the central shaft of less than the predetermined distance and that rotates about the central shaft, and one, or two or more, flexible tongue pieces that are provided projecting out from the central body within a predetermined provision range of an outer circumferential portion centered on the central shaft; a through hole formed in the conveyance guide at a portion through which the tongue pieces pass during rotation of the central body about the central shaft; and a guide body that is provided in a non-provision range excluding the provision range of the outer circumferential portion of the central body centered on the central shaft, and that is positioned further outward than the outer circumferential portion.

10 . The medium separating and stacking device of claim 9 , further comprising:
a roller that is configured with a circular column shape centered on the central shaft, and that includes a portion exposed to the conveyance path side through a roller-exposing hole formed in the conveyance guide and contacting the medium on the conveyance path; wherein the central shaft is disposed at a location separated by substantially the predetermined distance from a direction of progress end portion of the conveyance guide; the end portion of the conveyance guide includes a curved portion curved along an outer circumferential face of the roller; and the guide body is formed with a lifting face that, when the tongue piece roller has been stopped in a predetermined state with respect to the curved portion, forms an angle with the conveyance path of a predetermined maximum angle or smaller and is disposed at a decreasing distance to the conveyance path on progression toward the opposite direction to the direction of progress.

Assignees

• Oki Electric Ind Co Ltd

Inventors

• Suetaka Michio
• Yokote Takamoto
• Iwasaki Satoru
• Togiya Hajime

Classifications

• B65H5/062

  between rollers or balls · CPC title

• B65H5/36 Primary

  Article guides or smoothers, e.g. movable in operation · CPC title

• B65H29/22

  and introducing into a pile · CPC title

• G07D11/00

  Devices accepting coins; Devices accepting, dispensing, sorting or counting valuable papers · CPC title

• B65H29/70

  Article bending or stiffening arrangements · CPC title