CN113808321A

CN113808321A - Paper money processing device

Info

Publication number: CN113808321A
Application number: CN202110116958.7A
Authority: CN
Inventors: 山中大晖; 木村智哉
Original assignee: Hitachi Omron Terminal Solutions Corp
Current assignee: Hitachi Omron Terminal Solutions Corp
Priority date: 2020-05-29
Filing date: 2021-01-28
Publication date: 2021-12-17
Anticipated expiration: 2041-01-28
Also published as: JP2021190544A; WO2021240858A1; JP7297716B2; CN113808321B

Abstract

A bill handling device efficiently dissipates heat from a bill discriminating device having a heat generating member. The bill handling device has a bill discriminating device having a discriminating portion for discriminating bills. The authentication unit includes: a heat generating component; a printed circuit board on which a heat generating component is mounted; a bracket which supports the printed circuit board and functions as a heat dissipation medium; a heat dissipation plate supported by the bracket; a 1 st heat conductive sheet disposed between the carriage and the printed board; a 2 nd heat conductive sheet disposed between the heat generating component and the heat dissipating plate; and a fan provided outside the bill discriminating device and having a heat dissipating function of the heat generating member.

Description

Paper money processing device

Technical Field

The present invention relates to a banknote handling apparatus.

Background

The bill handling apparatus has a bill discriminating apparatus for discriminating bills. In the bill discriminating device, as the processing contents of bill discrimination increase and speed increases, it is necessary to use a microcontroller having a high processing capability.

However, a microcontroller with high processing power is a heat-generating component that consumes much power. Thus, if heat is not dissipated efficiently, the rated temperature of the microcontroller is exceeded.

Patent document 1 describes a method of suppressing a temperature rise of an electronic component by connecting heat conductive sheets to the upper and lower sides of the electronic component as a heat source, with respect to a heat dissipation structure.

Specifically, patent document 1 describes "a heat radiation structure in which a fan may be added to an information processing device to improve the cooling efficiency of a heat sink. However, since the addition of a simple fan may increase the cost or increase the size of the apparatus, it is preferable to adopt a heat radiation structure in which the fan is not used as much as possible. "

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2010-251413

Disclosure of Invention

Problems to be solved by the invention

Patent document 1 describes that a heat radiation structure using as few fans as possible is preferably adopted. Therefore, in the heat dissipation structure of patent document 1, it is difficult to efficiently dissipate heat of the bill discriminating device having the heat generating member.

The invention aims to efficiently dissipate heat of a paper money discriminating device having a heat generating member in a paper money handling device.

Means for solving the problems

A banknote handling apparatus according to an aspect of the present invention is a banknote handling apparatus including a banknote discriminating device including a discriminating portion for discriminating a banknote, the banknote handling apparatus including: a heat generating component; a printed board on which the heat generating component is mounted; a bracket that supports the printed circuit board and functions as a heat dissipation medium; a heat dissipation plate supported by the bracket; a 1 st thermally conductive sheet disposed between the bracket and the printed board; a 2 nd heat conductive sheet disposed between the heat generating component and the heat radiating plate; and a fan provided outside the bill discriminating device and having a function of dissipating heat from the heat generating member.

Effects of the invention

According to an aspect of the present invention, in a banknote handling device, a banknote discriminating device having a heat generating member can efficiently dissipate heat.

Drawings

Fig. 1 is a control block diagram of the banknote handling apparatus.

Fig. 2 is a diagram showing an example of the internal configuration of a banknote handling device equipped with a banknote classification device.

Fig. 3 is a diagram showing an example of an internal heat dissipation structure of the bill discriminating device.

Fig. 4 is a diagram showing a configuration example of the bill discriminating device and the fan.

Description of the reference symbols

1 a banknote handling device; 30 a discrimination unit; 31 a bracket; 32 a printed substrate; 33 a thermally conductive sheet; 34 a microcontroller; 35 a thermally conductive sheet; 36 a heat sink plate; 37 a cover; 38 holes of the cover; 39 a waste collection tray; 40 a fan; 50 wind passages; y1 flow of wind.

Detailed Description

Hereinafter, embodiments will be described with reference to the drawings.

[ examples ]

Referring to fig. 1, a control block of the banknote handling apparatus will be described.

The banknote handling apparatus 1 is an apparatus that performs accounting (audit) operations such as counting, authenticity determination, and damage separation processing of collected banknotes.

As shown in fig. 1, the banknote handling apparatus 1 includes: a main control unit 12 for controlling each unit in the apparatus; a ROM (read only memory) 13 in which an operation program of the main control unit and the like are recorded; a RAM (random access memory) 6 for recording control data for controlling each unit by the main control unit 12 in a readable and writable manner; a display operation unit 11 used when accepting an input operation by an operator and displaying data after the operation; a communication unit 10 that transmits and receives information when connected to a host computer or the like; a storage unit 9 for storing various information; and a fan 40 having a suction function.

The storage unit 9 stores reference information used for judging whether or not the banknotes are authentic and information serving as a reference for judging whether or not the good banknotes are defective. The bill feeding unit 8 is a part that feeds bills one by one to a conveyance path when bills are placed in a hopper of the bill handling apparatus 1 described later. The bill conveying unit 7 is a general term for a path for conveying the bills fed from the bill feeding unit 8 to a stacker described later.

The number-of-sheets detection sensor 3 detects the number of banknotes being transported. The scanner 2 provided in the bill discriminating device can acquire the entire front and back images of the bill, and therefore can detect the size of the bill such as the length of the bill in the transport direction, and the length of the bill in the width direction perpendicular thereto, and the skew (inclination) of the bill being transported. Of course, since the entire front and back images can be acquired, the images are also used as data for denomination (denomination) of the bill, authenticity judgment, and damage judgment.

Further, the apparatus comprises: a distribution gate 4 for distributing the banknotes after the ledging (the checking) by the banknote classification device; and a temperature sensor 5 for measuring the temperature of an actuator for operating the distribution gate.

Next, an internal configuration example of a banknote handling apparatus equipped with a banknote classification device and a flow (sequence) of banknote transportation will be described with reference to fig. 2.

The banknote handling apparatus 1 includes, as main internal components, a banknote insertion unit 18 (hopper) for inserting banknotes, a banknote discriminating device 22 for discriminating banknotes conveyed from the banknote insertion unit 18, and stacking boxes 17 and 21 (also referred to as bag units) having a plurality of bags for distributing and stacking the discriminated banknotes under predetermined conditions. The

stacking boxes

17, 21 include a stacking unit 21 for stacking the banknotes to be discriminated and a reject unit 17 for stacking the banknotes not assigned to the stacking unit 21.

The bill discriminating device 22 is constituted by a computer including a sensor, a memory, and a processor, for example. A program loaded from the memory and executed by the processor controls the sorting process of the banknotes based on the detection result of the sensor.

The conveyance path is provided with a plurality of

gate sections

14 and 15. Specifically, the plurality of

gate units

14 and 15 include a gate unit 14 corresponding to the main body stacking box 21 and a gate unit 15 corresponding to the reject unit 17. The

gate units

14 and 15 switch the destinations of the banknotes to be transported, respectively, under the control of the banknote classification device 22.

When 1 or more banknotes to be processed are placed in the bucket 18, the banknote processing apparatus 1 is drawn into the banknote processing apparatus 1 from the bucket 18 one by one. The denomination (denomination) and state (damage state, orientation, front and back surfaces, etc.) of the banknotes taken in and transported are discriminated by the banknote discriminating device 22, and the

stack cassettes

17 and 21 of the sorting destinations are determined. When the destination of the bill is either one of the

main body stacker

17, 21, the bill is conveyed to the

main body stacker

17, 21 through the lower main body conveyance path 20, the vertical main body conveyance path 23, and the upper main body conveyance path 24.

Each of the main

body stacking boxes

17 and 21 has a stacking area for horizontally placing bills from the disk-shaped wheel 16, which is used to stack bills one by one in order, because the bottom surface and the wheel 16 are horizontal (or close to a horizontal surface). That is, the

body stacking boxes

17, 21 have wheels 16 and stacking areas. Each wheel 16 receives the banknotes fed by the radial blade portion one by one, and discharges the banknotes in a state of being aligned to a lower stacking area. Since the bottom surface of the stacking area of each of the

stacking boxes

17 and 21 is horizontal (or close to a horizontal surface), the user can take out the banknotes with the front and back surfaces of the banknotes horizontal.

The banknotes discriminated as rejected banknotes by the banknote discriminating device 22 are fed to the reject unit 17 through the lower body transport path 20, the vertical body transport path 23, and the upper body transport path 24 by the gate 15 corresponding to the reject unit 17.

Next, an example of an internal heat dissipation structure of the banknote validator will be described with reference to fig. 3.

The internal structure of the banknote classification device 22 includes: an image sensor 26 for acquiring surface image information of the bill; a magnetic sensor 25 for acquiring magnetic distribution information distributed on the surface; a thickness sensor 28 for detecting the number of banknotes; a transport roller 27 for feeding the identified banknotes to each stacker; a discriminating section 30 for discriminating the banknotes; and a cover 37 of the bill discriminating device 22, covering them, and having holes for the purpose of heat dissipation.

The heat radiation mechanism of the authentication unit 30 includes a microcontroller 34 of the authentication unit 30, a printed circuit board 32 on which the microcontroller 34 is mounted, heat

conductive sheets

33 and 35, and a tray-like bracket 31 that supports a heat radiation plate 36 and the printed circuit board 32 and also plays a role of a heat radiation medium.

The heat dissipating mechanism of the authentication unit 30 is inserted into a gap between the back surface of the printed board 32 and the carriage 31 at a position where the microcontroller 34 is mounted on the printed board 32.

When the banknote discriminating device 22 is mounted on the banknote handling device 1, the banknote discriminating device 22 is mounted upside down. Therefore, if there is a loose fixation between the carriage 31 and the printed circuit board 32 or if there is a difference in the gap between the carriage 31 and the printed circuit board 32 and the thickness of the thermally conductive sheet 33, a slight space is formed in any of the printed circuit board 32, the thermally conductive sheet 33, and the carriage 31, and the heat dissipation efficiency is significantly deteriorated. Therefore, the width of the space from the printed circuit board 32 to the bracket 31 and the thickness of the thermally conductive sheet 33 are adjusted and designed to be substantially uniform, and sufficient fixation of the printed circuit board 32 and the bracket 31 is required.

Next, the heat conductive sheet 35 is connected to the surface of the microcontroller 34, and the heat dissipation plate 36 is fixed so as to be fastened to the microcontroller 34 via the heat conductive sheet 35. As described above, the width of the space between the surface of the microcontroller 34 and the heat sink 36 and the thickness of the heat conductive sheet 35 are adjusted and designed to be substantially equal to each other so that the space is not formed between the surface of the microcontroller 34 on the printed board 32 and the heat sink 36, and sufficient fixation of the bracket 31 and the heat sink 36 is required.

In this way, heat generated by the microcontroller 34 is diffused to the heat sink 36 and the bracket 31, thereby increasing the surface area of the heat medium and improving the heat dissipation efficiency.

Finally, a configuration example of the bill discriminating device and the fan will be described with reference to fig. 4. Fig. 4 shows a flow Y1 of wind for radiating heat accumulated in the casing of the banknote discriminating device 30 to the outside, in addition to the internal heat radiation structure diagram of the banknote discriminating device 22 described in fig. 3.

As shown in fig. 4, the heat accumulated in the casing of the banknote validator 30 is dissipated to the outside by the suction function of the fan 40 provided outside the banknote validator 22 through the hole 38 of the cover 37 of the banknote validator 22 by the flow of air such as Y1.

Conventionally, there is a method of providing a small fan on the front side of a printed circuit board. However, although this method improves the heat dissipation efficiency, since it is a fan of the discharge type, there is a problem that dust and the like caused by conveyance of bills are accumulated in the cover 37 of the bill discriminating device 22 by the flow of wind.

Therefore, in the embodiment of the present invention, the small fan provided on the front side of the printed circuit board is eliminated, and the fan 40 is provided outside the housing. Thus, dust and the like caused by conveyance of the banknotes are caused to fall to the dust collection tray 39 through the hole 38 of the cover 37 of the banknote classification device 22 by the flow Y1 of the wind caused by the fan 40 provided outside, indicated by Y1. As a result, in the embodiment, the problem of accumulation of dust and the like due to conveyance of bills in the cover 37 of the bill discriminating device 22 is solved, and performance and safety can be ensured.

In the method of disposing the fan inside the casing to circulate air and dissipate heat, paper dust of the bills falling from the conveyance path, dust adhering to the bills, and the like are accumulated in the casing depending on the position where the fan is disposed. There is a possibility that the printed circuit board may be broken down due to static electricity generated by the accumulated dust. In the embodiment of the invention, the fan is arranged outside the shell, so that the failure of the printed substrate can be prevented.

As described above, the banknote handling apparatus 1 according to the embodiment includes the banknote classification device 22, and the banknote classification device 22 includes the classification section 30 for classifying the banknotes. The discrimination unit 30 includes: heat generating components (microcontroller 34); a printed board 32 on which heat generating components are mounted; a bracket 31 that supports the printed circuit board 32 and functions as a heat radiation medium; a heat sink 36 supported by the bracket 31; a 1 st thermally conductive sheet 33 disposed between the bracket 31 and the printed board 32; a 2 nd heat conductive sheet 35 disposed between the heat generating component 34 and the heat dissipating plate 36; and a fan 40 provided outside the bill discriminating device 22 and having a heat radiating function of the heat generating component 34.

The 1 st thermally conductive sheet 33 is disposed in a gap between the printed board 32 and the bracket 31 at a position where the heat generating component 34 is mounted on the printed board 32. The 2 nd thermally conductive sheet 35 is disposed in a gap between the heat generating component 34 and the heat dissipating plate 36 at a mounting position of the heat generating component 34 on the printed substrate 32. The heat dissipation plate 36 is supported and fixed by the bracket 31 so as to hold the heat generating component 34 via the 2 nd heat conductive sheet 35.

The fan 40 discharges the heat, which is charged in the bill discriminating device 22 from the heat generating member 34, to the outside through an air passage 50 connecting the outside of the bill discriminating device 22 and the inside of the bill discriminating device 22.

Further, the banknote validator 22 is covered by a cover 37 having a hole 38, and the fan 40 forms an air flow Y1 for discharging heat filled in the banknote validator 22 from the air passage 50 to the outside through the hole 38 by utilizing the air suction function.

Further, the paper money discriminating device has a dust collecting tray 39 provided outside the paper money discriminating device 22, and the fan 40 guides dust generated by the conveyance of the paper money from the hole 38 to the dust collecting tray 39 by an air flow Y1 generated by the fan 40.

The banknote discriminating device 22 further includes a transport roller 27 for transporting the banknote, and a hole 38 is provided on the bottom surface of the banknote discriminating device 22 below the transport roller 27. The dust collection tray 39 is provided so as to face the hole 38.

The heat generating component 34 is constituted by a microcontroller, and the 1 st heat conductive sheet 33 and the 2 nd heat conductive sheet 35 thermally diffuse heat generated from the microcontroller 34 to the heat radiating plate 36 and the bracket 31.

In the above-described embodiment, the heat conductive sheet is connected to both surfaces of the microcontroller mounting surface (upper surface) and the back surface (bottom surface) thereof mounted on the printed circuit board, and heat is diffused from both directions to the heat dissipation plate to dissipate the heat.

The fan is provided at a position away from the board mounting position, and the air around the heat dissipation plate is sucked out through an exhaust duct (air passage). With this configuration, accumulation of dust and the like caused by conveyance of the paper money can be prevented.

As described above, according to the above embodiment, the heat generated from the electronic component, particularly the micro controller, is diffused from both sides of the upper surface and the bottom surface of the printed circuit board, thereby increasing the heat dissipation efficiency, and the flow of the air is formed in the case by the provision of the external fan, thereby providing a remarkable cooling effect. Further, it is possible to prevent dust and the like generated during conveyance of bills from accumulating inside the differentiating section.

The present invention is not limited to the above-described embodiments, but includes various modifications. For example, the above-described embodiments are described in detail to explain the present invention easily and understandably, and are not limited to having all of the described configurations. Further, a part of the structure of a certain embodiment can be replaced with the structure of another embodiment, and the structure of another embodiment can be added to the structure of a certain embodiment. Further, as for a part of the configuration of each embodiment, addition, deletion, and replacement of another configuration can be performed.

Claims

1. A bill handling apparatus having a bill discriminating device including a discriminating portion for discriminating a bill, characterized in that,

the identification unit includes:

a heat generating component;

a printed board on which the heat generating component is mounted;

a bracket that supports the printed circuit board and functions as a heat dissipation medium;

a heat dissipation plate supported by the bracket;

a 1 st thermally conductive sheet disposed between the bracket and the printed board;

a 2 nd heat conductive sheet disposed between the heat generating component and the heat radiating plate; and

and a fan provided outside the bill discriminating device and having a heat radiating function of the heat generating member.

2. The banknote handling apparatus according to claim 1,

the 1 st thermally conductive sheet is disposed in a gap between the printed board and the bracket at a position where the heat generating component is mounted on the printed board.

3. The banknote handling apparatus according to claim 1,

the 2 nd heat conductive sheet is disposed in a gap between the heat generating component and the heat radiating plate at a position where the heat generating component is mounted on the printed board.

4. The banknote handling apparatus according to claim 1,

the heat dissipation plate is supported and fixed by the bracket so as to press the heat generating component via the 2 nd heat conductive sheet.

5. The banknote handling apparatus according to claim 1,

the fan discharges heat, which is charged from the heat generating member into the bill discriminating device, to the outside through an air passage connecting the outside of the bill discriminating device and the inside of the bill discriminating device.

6. The banknote handling apparatus according to claim 5,

further comprising a cover which covers the bill discriminating device and has a hole portion;

the fan forms an air flow for discharging the heat filled in the bill discriminating device from the air passage to the outside through the hole portion by utilizing an air suction function.

7. The banknote handling apparatus according to claim 6,

a garbage collecting tray disposed outside the paper money discriminating device;

the fan guides dust generated by the conveyance of the paper money from the hole portion to the dust collection tray by the airflow generated by the fan.

8. The banknote handling apparatus according to claim 6,

the paper money discriminating device further includes a conveying roller for conveying the paper money;

the hole is provided in a bottom surface of the paper money discriminating device below the conveying roller.

9. The banknote handling apparatus according to claim 7,

the garbage collecting tray is disposed to face the hole.

10. The banknote handling apparatus according to claim 1,

the heating component is composed of a microcontroller;

the 1 st and 2 nd heat conductive sheets thermally diffuse heat generated from the microcontroller to the heat dissipation plate and the bracket.