Paper sheet stacking device

Abstract

A conveyer belt is looped on rollers placed over and at both ends of a paper sheet storage part and bill holding members for holding bills are fixed onto an outer surface of the conveyer belt at determined interval. The bill holding members themselves have grip force by which the conveyer belt bends inward and the bills are held. When the bill holding members pass over the roller on a reception side, their free ends get apart from the conveyer belt and the bill holding members receive the bills. The bill holding members grip portions near ends of the bills when passing between rollers. When the bill holding members pass under the roller on a release side, their free ends get apart from the conveyer belt. The bill holding members release the bills, allowing the bills to fall onto stacked bills for staking storage.

What is claimed is: 
     
         1 . A paper sheet stacking device which introduces paper sheets conveyed and which stores the paper sheets in a stacked state, the device comprising:
 a paper sheet storage part which receives and stores the paper sheets one by one;   an endless conveyer belt looped on a first roller placed on a side over the paper sheet storage part on which the paper sheets are received and a second roller placed on a side over the paper sheet storage part on which the paper sheets are released; and   paper sheet holding members each having one end fixed onto an outer surface of the conveyer belt and another end energized to a conveyer belt side on a upstream side in a conveyance direction of a position at which the one end is fixed.   
     
     
         2 . The paper sheet stacking device according to  claim 1 , wherein:
 the paper sheet holding members are arranged at determined intervals in the conveyance direction of the conveyer belt so as not to overlap with one another; and   the paper sheet is held by the another end and the conveyer belt.   
     
     
         3 . The paper sheet stacking device according to  claim 2 , wherein:
 each of the paper sheet holding members is an elastic body having a shape by which the another end is, at the time of the one end being fixed onto the conveyer belt like a plane, at a position beyond the plane of the conveyer belt; and   the elastic body is bent by the conveyer belt and therefore the paper sheet is held.   
     
     
         4 . The paper sheet stacking device according to  claim 2 , wherein:
 each of the paper sheet holding members has a first portion having one end which is fixed onto the conveyer belt and which is formed from a hard material, a second portion attached to a free end of the first portion, and an elastic body which energizes the second portion so as to make the second portion tilt to the conveyer belt side; and   the second portion holds the paper sheet by energizing force of the elastic body.   
     
     
         5 . The paper sheet stacking device according to  claim 4 , wherein the elastic body is a coiled spring placed on an axis at which the second portion is attached to the first portion so as to freely pivot. 
     
     
         6 . The paper sheet stacking device according to  claim 4 , wherein the elastic body is a plate spring whose both ends are fixed to the first portion and the second portion. 
     
     
         7 . The paper sheet stacking device according to  claim 2 , wherein:
 each of the paper sheet holding members has a swinging portion which extends approximately parallel with a face of the conveyer belt and which can swing with the one end fixed onto the conveyer belt as a supporting point and a first magnetic attraction portion attached to a free end of the swinging portion; and   the paper sheet is held by attraction force produced between the first magnetic attraction portion and a second magnetic attraction portion placed in a lower conveyance area inside the conveyer belt.   
     
     
         8 . The paper sheet stacking device according to  claim 7 , wherein one of the first magnetic attraction portion and the second magnetic attraction portion is a magnet and another is a magnet or a magnetic substance. 
     
     
         9 . The paper sheet stacking device according to  claim 1 , wherein:
 the paper sheet holding members are arranged at determined intervals in the conveyance direction of the conveyer belt so as to overlap with one another; and   the paper sheet is held by the another end and an adjacent paper sheet holding member on an upstream side in the conveyance direction.   
     
     
         10 . The paper sheet stacking device according to  claim 9 , wherein:
 each of the paper sheet holding members is an elastic body having a shape by which the another end is, at the time of the one end being fixed onto the conveyer belt like a plane, at a position on the conveyer belt side beyond a face on the paper sheet storage part side of the adjacent paper sheet holding member on a upstream side in the conveyance direction; and   the another end is on the adjacent paper sheet holding member, the elastic body bends, and therefore the paper sheet is held.   
     
     
         11 . The paper sheet stacking device according to  claim 9 , wherein:
 each of the paper sheet holding members has a first portion having one end which is fixed onto the conveyer belt and which is formed from a hard material, a second portion attached to a free end of the first portion, and an elastic body which energizes the second portion so as to make the second portion tilt to the conveyer belt side; and   the second portion which is on the first portion of an adjacent paper sheet holding member on a upstream side in the conveyance direction holds the paper sheet by energizing force of the elastic body.   
     
     
         12 . The paper sheet stacking device according to  claim 11 , wherein the elastic body is a coiled spring placed on an axis at which the second portion is attached to the first portion so as to freely pivot. 
     
     
         13 . The paper sheet stacking device according to  claim 11 , wherein the elastic body is a plate spring whose both ends are fixed to the first portion and the second portion. 
     
     
         14 . The paper sheet stacking device according to  claim 2 , wherein each of the paper sheet holding members is fixed onto the conveyer belt by fitting a rib protruding from a face of the conveyer belt onto which each of the paper sheet holding members is fixed into a fitting groove which is formed on one end side of each of the paper sheet holding members and whose section is equal in shape to a section of the rib. 
     
     
         15 . The paper sheet stacking device according to  claim 1 , wherein:
 the paper sheet holding members are arranged at determined intervals in the conveyance direction of the conveyer belt;   a notch is cut in the one end of each of the paper sheet holding members fixed onto the outer surface of the conveyer belt; and   the paper sheet holding members are arranged in a state in which the another end of each adjacent paper sheet holding member on an downstream side in the conveyance direction fits into the notch.