JP5879287B2 - Paper thickness detection device, bill judgment device and bill handling device - Google Patents

Description

  The present invention relates to a paper sheet thickness detection device for detecting a tape, paper, a sticker, or the like affixed to a bill, a securities, a stamp, a check, and the like, a bill judgment device having the same, and a bill handling device.

  In devices that handle banknotes, such as banknote handling devices and vending machines provided in automatic teller machines, it is important to distinguish banknotes that have been altered with tape, paper, etc. The detection apparatus and the banknote determination apparatus which has it are provided.

  Japanese Patent Application Laid-Open No. 2002-316746 discloses a heat of a resin-made fixed roller mounting jig so that the fixing gap between the fixed roller mounting jig and the housing can be kept at a predetermined amount or less even if there is a temperature change. Dimensional tolerance taking into account the thermal expansion of the fixed roller mounting jig made of resin and the chamfered part of the resin fixed roller mounting jig that fits into the case with a tight fit that takes into account the expansion Disclosed is a sheet thickness detection device that can obtain a stable output by keeping the gap between opposed rollers below a predetermined amount even when there is a temperature change by making the dimensions so that it fits tightly. Has been.

JP 2002-316746 A

  However, the paper sheet thickness detection device described in Japanese Patent Application Laid-Open No. 2002-316746 is effective in reducing the gap between the bearing of the fixed roller and the housing due to a temperature change, but the thermal deformation in the axial direction of the housing. For this, a sufficient preventive effect cannot be obtained.

  The present invention has been made to solve the above-described problems, and the thickness of the paper sheet is accurately determined by a mechanism that eliminates the thermal deformation of the frame (frame) to which the reference roller, the detection roller, and the displacement detection sensor are attached. An object of the present invention is to provide a sheet thickness detecting device capable of detecting, and to provide a mechanism that eliminates thermal deformation of a frame of the thickness detecting device when the sheet thickness detecting device is mounted on a bill judgment device. And

  In order to achieve the above object, the sheet thickness detecting device of the present invention has a rotating shaft 3 and a rotating shaft 10 provided in parallel in the first frame 2, and is attached to the rotating shaft 3. A plurality of reference rollers 5 arranged in a direction perpendicular to the sheet conveying direction, and arranged corresponding to the positions of the reference rollers 5, and the outer ring contacts the reference roller 5 and is centered on the rotation shaft 10. A plurality of detection rollers 11, and a plurality of displacement detection sensors 27, 28 that are arranged to face each of the plurality of detection rollers 11 and detect displacement of the plurality of detection rollers 11, and a plurality of reference rollers Rotation of the first frame 2 in a sheet thickness detecting apparatus for detecting the thickness of a sheet by conveying the sheet to a contact portion between the outer ring of the plurality of detection rollers 11 and the plurality of detection rollers 11 Ball bearings 6 and 8 of these rotating shafts on the shafts 3 and 10. 14 and 16 mounting holes 30, 36, 40 and 46 are provided, and both ends of the rotation shaft 3 and the rotation shaft 10 of the reference roller 5 and the detection roller 11 are fixed to the inner rings of the ball bearings 6, 8, 14 and 16, The outer rings of the ball bearings 6 and 14 at one end of the reference roller 5 and the detection roller 11 are fixed to one mounting hole 30 and 40, and the outer rings of the ball bearings 8 and 16 at the other end of the reference roller 5 and the detection roller 11 are the other. The mounting holes 36 and 46 are disposed so as to be movable only in the axial direction of the rotary shaft 3 and the rotary shaft 10.

  According to the sheet thickness detection apparatus of the present invention, even when the rotation shaft and the frame expand and contract due to thermal fluctuation, the deformation of the frame can be prevented, so the thickness of the sheet is detected with high accuracy. It is possible to detect with high accuracy a double feed in which two or more banknotes overlap, a banknote transformed with tape, paper, or the like.

It is a perspective view of the thickness detection apparatus of the paper sheets of this invention. It is sectional drawing of FIG. It is a top view which shows an example which applied the thickness detection apparatus of the paper sheet of this invention to the banknote determination apparatus. FIG. 4 is a side view of FIG. 3. It is an enlarged view which shows an example of the conveyance guide of the thickness detection apparatus of the paper sheets of this invention. An example of the thin plate guide part which comprises a conveyance guide is shown. An example of the upper guide 60 and the lower guide 75 which comprise a conveyance guide is shown. An example of the upper guide 65 which comprises a conveyance guide is shown. It is sectional drawing which shows another example of the thickness detection apparatus of the paper sheets of this invention. It is an internal block diagram which shows an example of the scraper of the thickness detection apparatus of the paper sheets of this invention. The banknote handling apparatus which has the thickness detection apparatus of the paper sheets of this invention is shown.

  FIG. 11 shows an embodiment of a bill handling apparatus using the paper sheet thickness detection apparatus of the present invention. The banknote handling apparatus 90 in FIG. 11 includes a banknote supply / reception mechanism 91 for separating banknotes for storing banknotes 96a supplied at the time of depositing cash and paying out an amount designated by the user at the time of cash withdrawal, and a banknote transport path. 92a, 92b, an image sensor for detecting the pattern of the banknote, a magnetic sensor for detecting the magnetic pattern of the banknote, and a true / false determination for determining the denomination or authenticity of the banknote comprising the fluorescent sensor for detecting the fluorescent image of the banknote Banknote determination apparatus for determining the authenticity of a banknote using the apparatus and the thickness detection apparatus for paper sheets according to the present invention for detecting banknotes that have been transformed with tape, paper, etc. 97, a temporary stacker 93 for temporarily storing banknotes when storing and paying out banknotes, a banknote collection box 94 for storing banknotes that cannot be mechanically processed, and banknote 96b for storing and paying out denominations Sutame denomination storage box 95a, 95b, and 95c, in constructed.

  Next, operation | movement of the banknote handling apparatus 90 shown in FIG. 11 is demonstrated. When depositing cash, banknotes 96a supplied to the banknote supply / reception mechanism 91 are separated one by one and supplied to the conveyance path 92a. The banknote determination device 97 discriminates whether the banknote is a genuine note or a counterfeit note, and determines whether the banknote is one or more. If the bill is a genuine note and is a single note, it is stored in the temporary stacker 93 and the transaction amount is displayed. On the other hand, when there is a problem with the supplied banknotes, all the supplied banknotes are returned to the banknote supply and reception mechanism 91. When the transaction is established, the bill is again checked through the bill judgment device 97 to check whether one or more bills are stored in each denomination storage box 95. When paying out the cash, the bills 96b in the denomination storage box 95 are separated one by one and supplied to the transport path 92b. The banknote determination device 97 determines whether the banknote is one or more. When there is one bill, it is paid out to the bill supply / reception mechanism 91. In the case of two or more sheets and folded tickets, they are stored in the temporary stacker 93 and then stored in the banknote collection box 94. Note that the banknote determination device 97 is configured to be discriminable regardless of whether the banknote is conveyed from either direction of reciprocation.

  Next, an embodiment of the paper sheet thickness detection apparatus of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing a substantially entire configuration of a sheet thickness detecting device. FIG. 2 is a cross-sectional view of the thickness detection apparatus of FIG.

  A sheet thickness detecting device 1 shown in FIG. 1 includes a rotation shaft 10 and a rotation shaft 10. Reference rollers 5 a to 5 j provided on the rotation shaft 3 are rotated by a rotation driving mechanism (not shown). The detection rollers 11a to 11j provided on the roller are driven and rotated by the reference rollers 5a to 5j, and the paper sheet when the paper sheets pass through the contact portions of the reference rollers 5a to 5j and the detection rollers 11a to 11j. It comprises displacement detection sensors 27a to 27j and 28a to 28j such as eddy current displacement sensors that detect the movement of the detection rollers 11a to 11j that move upward according to the thickness of the kind. As described above, the reference rollers 5a to 5j and the detection rollers 11a to 11j are arranged in a large number in the direction perpendicular to the paper sheet conveyance direction so that the entire area of the paper sheets can be detected.

  Further, both end portions of the rotary shafts 3 and 10 are attached to the sensor frame 2 via ball bearings 6, 8, 14, and 16, and the inner rings of the ball bearings 6, 14, and 16 are set screws 7, 15, and 17 (FIG. 2). Is fixed). The pressing force between the reference rollers 5a to 5j and the detection rollers 11a to 11j is set by the distance between the rotation shafts 3 and 10. Further, the displacement detection sensors 27 a to 27 j and 28 a to 28 j are provided on the circuit board 26, and the circuit board 26 is attached to the sensor frame 2.

  The detection rollers 11 a to 11 j are filled with an outer ring 12 made of a cylindrical member such as metal and a soft elastic member 13 such as rubber between the outer ring 12 and the rotating shaft 10. In addition, as shown in FIG. 2, the elastic member 13 can be divided and provided at both ends of the outer ring 12. The elastic member 13 and the outer ring 12 can be bonded or non-bonded. As a result, when the paper sheet passes between the reference rollers 5a to 5j and the detection rollers 11a to 11j, the elastic member 13 is deformed by the thickness of the paper sheet and the outer ring 12 moves upward. That is, when the pressure is transmitted to the elastic member 13 and the elastic member 13 is deformed, the roller is eccentric and the outer ring 12 moves upward. This movement amount is detected by the displacement detection sensors 27a to 27j and 28a to 28j, and a displacement detection signal V corresponding to the thickness of the paper sheet is output.

  In addition, this displacement detection signal V is sent to the determination process part (not shown) of the banknote determination apparatus 97 of the automatic teller machine shown in FIG. The determination processing unit is a double feed in which two or more banknotes are overlapped from a displacement detection signal V and a posture signal of skew (inclination in the conveyance direction) and shift (position in the rotation axis direction) when the banknote passes the detection roller, It is determined whether the ticket is a modified ticket with a tape or the like attached, and a determination signal is output. The posture signal is used to correct the displacement detection signal V in a state where there is no skew of the banknote and to obtain a position where the banknote has passed the detection roller.

  As shown in FIG. 1 and FIG. 2, the sensor frame 2 can be constituted by one block of a substantially rectangular parallelepiped integrally formed. The surfaces to which the reference rollers 5a to 5j and the detection rollers 11a to 11j are attached are parallel surfaces, and the surface to which the circuit board 26 provided with the displacement detection sensor is attached is orthogonal to the parallel surfaces. Further, through holes are formed between the opposing surfaces, and the reference rollers 5a to 5j, the detection rollers 11a to 11j, and the circuit board 26 are attached to the corresponding surfaces. In addition, it is not necessary to provide a through hole on the surface opposite to the surface on which the circuit board 26 is attached. A screw hole 18 and a pin hole 19 provided on the side surface of the sensor frame 2 are provided to attach the paper sheet thickness detection device 1 to the bill frame determination device 97 shown in FIG.

  In this way, by attaching the reference rollers 5a to 5j, the detection rollers 11a to 11j, and the circuit board 26 to the integrally formed sensor frame 2, the reference rollers 5a to 5j and the detection roller 11a against vibrations transmitted from the outside. .About.11j and the circuit board 26 vibrate in the same phase, so that no vibration noise appears in the displacement detection signal V, so that the detection accuracy can be improved.

  FIG. 2 shows a cross-sectional view of the thickness detector 1 of FIG. In FIG. 2, the description of the central portion of the thickness detection device 1 is omitted. The description of the same reference numerals as those in FIG. 1 is omitted. One end of the rotation shaft 3 of the reference rollers 5a to 5j is fixed to the inner ring 32 of the ball bearing 6 with a set screw 7, and the other end is fixed to the inner ring 22 of the ball bearing 8 with an interference fit or the like. Further, the ball bearings 6 and 8 are fitted in the outer rings 23 and 33 in contact with the mounting holes 30 and 36 provided in the sensor frame 2. The attachment holes 30 and 36 are holes that penetrate the sensor frame 2. Further, the outer ring 33 of the ball bearing 6 is pressed against a step portion 31 provided in the mounting hole 30 by a stop plate 34 and fixed to the sensor frame 2 by a set screw 35.

  When the sensor frame 2 is deformed, the circuit board 26 provided with the displacement detection sensor is deformed, and the distance between the detection roller and the displacement detection sensor varies, so that there is a problem that an accurate bill thickness cannot be detected.

  In this configuration, when the rotating shaft 3 and the sensor frame 2 expand and contract due to thermal fluctuation, the ball bearing 8 and the sensor frame 2 slip in the axial direction, so that deformation of the sensor frame 2 can be prevented.

  Similarly, both ends of the rotating shaft 10 of the detection rollers 11a to 11j are fixed to the inner rings 42 and 20 of the ball bearings 14 and 16 by set screws 15 and 17, respectively. The ball bearings 14 and 16 are fitted with the outer rings 21 and 43 in contact with the mounting holes 40 and 46 provided in the sensor frame 2. The attachment holes 40 and 46 are holes that penetrate the sensor frame 2. Further, the outer ring 43 of the ball bearing 14 is pressed against a step portion 41 provided in the mounting hole 40 by a stop plate 44 and fixed to the sensor frame 2 by a set screw 45. Reference numeral 4 denotes an attachment portion of a gear coupled to the rotational drive mechanism. For the metal member of the sensor frame 2, aluminum, stainless steel, iron, copper, casting, or the like can be used.

  With the above configuration, even when the rotating shaft 10 and the sensor frame 2 expand and contract due to thermal fluctuation, the ball bearing 16 and the sensor frame 2 are slipped in the axial direction, so that the sensor frame 2 is prevented from being deformed. Furthermore, if the sensor frame 2, the rotary shafts 3, 10 and the ball bearings 6, 8, 14, 16 are made of the same material, or a material having the same or close thermal expansion coefficient, expansion and contraction due to thermal fluctuation is reduced, which is more preferable. is there.

  Another embodiment of the sheet thickness detecting apparatus of the present invention will be described with reference to FIGS.

  FIG. 3 shows a plan view in which the thickness detection device 1 is attached to the device frames 53a and 53b of the bill judgment device 97 shown in FIG. FIG. 4 shows a side view of FIG. In addition, a dotted line part shows the structure inside the thickness detection apparatus 1 and the banknote determination apparatus 97. FIG. In addition, description of the same code | symbol as FIG. 1, FIG. 2 is abbreviate | omitted.

  3 and 4 show a bill judgment device 97, another sensor 51 such as an image sensor attached to the bill judgment device 97, open / close frames 52a and 52b that can be opened and closed during jam removal, and device frames 53a and 53b. A rotation shaft 54 of the open / close frames 52a and 52b provided on the device frames 53a and 53b, a screw 55 that is inserted into the screw hole 18 of the sensor frame 2 and fixes the side surface of the sensor frame 2 to the device frame 53a, and a sensor frame Are inserted into the pin holes 19 of the sensor frame 2, and are inserted into the pin holes 19 of the sensor frame 2 and the screw portions 57 for fixing the support pins 56 to the device frame 53b. The pin part 58 for this, the gear 59 which transmits rotational force to a reference | standard roller, and the code | symbol 69 which shows a banknote conveyance direction are shown.

  The open / close frames 52a and 52b and the apparatus frames 53a and 53b are connected by a connecting member (not shown). 4 shows an arm 76 for fixing the open / close frames 52a and 52b to the device frames 53a and 53b, a rotation shaft 77 of the arm 76 provided on the open / close frames 52a and 52b, and a fix provided on the device frames 53a and 53b. Pin 78 is shown.

  As described above, when the thickness detection device 1 is attached to the device frames 53a and 53b of the banknote determination device 97, one of the side surfaces fixing the rotation shafts 3 and 10 of the sensor frame 2 of the thickness detection device 1 is used as the device frame 53a. Fix it. Further, since the other of the sensor frame 2 is bent by its own weight, a free-supporting configuration in which the thickness of the thickness detection device 1 is supported by being inserted into the pin hole 19 of the sensor frame 2 by the support pins 56 provided on the device frame 53b. And As a result, even when the sensor frame 2 expands and contracts due to thermal fluctuation, slippage occurs at the contact portion between the support pin 56 and the pin hole 19 of the sensor frame 2 and the sensor frame 2 is not restrained, so that deformation of the sensor frame 2 can be prevented. it can.

  An embodiment of the conveyance guide of the sheet thickness detection apparatus of the present invention will be described with reference to FIGS. In addition, description of the same code | symbol as FIGS.

  Here, the structure of the upper guides 60, 61, 65 and the lower guides 70, 75 provided on the reference rollers 5a-5j and the detection rollers 11a-11j of the present invention will be described (see FIG. 5). These guides are necessary for inserting a bill into a roller, and include a folded ticket in which a portion of the bill is broken, a cut ticket in which a portion of the bill is cut, a curled ticket in which the bill is curled, etc. This structure is necessary for guiding and biting the roller so as not to cause a jam.

  In the present invention, since the gap between adjacent rollers of the reference roller 5 and the detection roller 11 is as narrow as several millimeters, it is necessary to insert a thin plate guide with a thickness of several millimeters between the adjacent rollers. Therefore, it is necessary to attach a thin guide so as not to contact the roller, and to have a structure in which the guide is not deformed by an external force acting on the guide.

  As shown in FIGS. 3 to 5, in this embodiment, the upper guides 60 and 61 attached to the sensor frame 2 and the detection guides 11 a to 11 j provided on the upper guide 61 are inserted into the gaps between the rollers. The thin plate guide portions 62a to 62i, the fitting portions 73a to 73i of the upper guide 61 provided on the upper guide 60 with the thin plate guide portions 62a to 62i, the upper guide 65 attached to the open / close frames 52a and 52b, Cutout portions 74a to 74i for inserting the thin plate guide portions 63a to 63i of the upper guide 61 provided on the guide 65, screws 66 for fixing the upper guides 61 and 62 to the sensor frame 2, upper guides 60 and 65, Composed of an upstream portion and a downstream portion provided in the lower guides 70 and 75, a comb tooth portion 68 inserted into a notch portion of the guide.

  FIG. 5 is a cross-sectional view showing the configuration of the upper guides 60, 61, 65 and the lower guides 70, 75 between the reference rollers 5a, 5b and the detection rollers 11a, 11b. The upper guides 60 and 61 and the lower guide 70 are attached to the sensor frame 2 of the thickness detection device 1 with screws 66. Further, as shown in FIGS. 3 and 4, the upper guide 65 is attached to the open / close frames 52 a and 52 b of the banknote determination device 97. Further, as shown in FIG. 4, the lower guide 75 is attached to the device frames 53 a and 53 b of the banknote determination device 97.

  In the upper guide 61 and the lower guide 70, a thin plate guide portion 62a, which is a thin plate having a thickness of several millimeters, is inserted to insert a guide into a narrow gap of several millimeters between adjacent rollers of the reference rollers 5a-5j and the detection rollers 11a-11j. 62i and 71a to 71i are provided.

  Moreover, as shown in FIG. 6, the recessed part for loosely fitting with the fitting parts 73a-73i (refer FIG. 7 about the fitting part 73) of the upper guide 60 to the end of the thin plate guide part 62 (62a-62i is shown). 80 and taper 81 are provided.

  Further, as shown in FIG. 8, the other end of the thin plate guide 62 (shown 62a to 62i) can be inserted into the notch 74 (shown 74a to 74i) of the upper guide 65 with a slight gap. A protrusion 63 (shown by 63a to 63i) is provided. Reference numerals 82 and 83 denote tapers. Similarly, as shown in FIG. 6, a recess 80 and a taper 81 for loosely fitting with the fitting portions 72 a to 72 i of the lower guide 75 are provided at one end of the thin plate guide portion 71 (shown 71 a to 71 i).

  Moreover, as shown in FIG. 7, the fitting part 73 (73a-73i is shown) and the fitting part 72 (72a-72i are shown) are provided with the side surface 84, the convex part 85, and the taper 86. As shown in FIG. The material of the guide is preferably resin. Moreover, you may replace a recessed part and a convex part. The tapers 81, 82, 83, and 86 are cut so that bills are not caught at the corners.

  In this way, the thin plate guide is inserted into the upstream fixed guide or the downstream fixed guide so that the leading end of the thin plate guide inserted between the reference roller and the detection roller is adjacent to the thin roller guide. Deformation can be prevented even when an external force is applied.

    Further, as shown in FIG. 8, the upper guide 61 is provided with a plurality of thin plate guide portions 62, 63, but the thin plate guide portion 63 becomes the notch portion 74 even if there is an error in the mounting interval of the thin plate guide portions. By loosely fitting, the thin plate guide portion can be attached without contacting the roller.

  Another embodiment of the sheet thickness detecting apparatus of the present invention will be described with reference to FIG. FIG. 9 is a view in which the support pin 56 of the sensor frame 2 of FIG. In addition, description of the same code | symbol as FIGS. 1-8 is abbreviate | omitted.

  The L-shaped metal fitting 87 is fixed to the apparatus frame 53b with screws 89. Since one end of the sensor frame 2 is bent by its own weight, the sensor frame 2 is placed on the L-shaped metal fitting 87 to support the own weight. In addition, the rib 88 can be provided in the L-shaped metal fitting 87 to restrict the movement of the sensor frame 2 in the bill conveyance direction.

  Thereby, when the sensor frame 2 expands and contracts due to thermal fluctuation, slippage occurs at the contact portion between the L-shaped metal fitting 87 and the sensor frame 2 and the sensor frame 2 is not restrained, so that deformation of the sensor frame 2 can be prevented.

  One embodiment of the scraper of the sheet thickness detecting device of the present invention will be described with reference to FIG. In addition, description of the same code | symbol as FIGS.

  Here, the configuration of the scrapers 100 and 110 for removing dust adhering to the reference rollers 5a to 5j and the detection rollers 11a to 11j of the thickness detection device 1 will be described. Foreign matters such as ink from paper money and paper dust adhere to the reference roller and the detection roller. If this is not removed, there is a problem that the bill thickness detection accuracy decreases.

  The scraper 100 incorporates an M-type blade 101 that contacts at two locations on the outer periphery of the detection roller 11a (also corresponding to 11b to 11j), protrusions 102 and 103 of the M-type blade 101, and an M-type blade 101. A folder 105 that is supported so as to move only in the direction of the rotation center of the roller 11a, and a spring 104 that is inserted between the M-type blade 101 and the folder 105 and presses the M-type blade 101 against the outer periphery of the detection roller 11a; , And a screw 106 for fixing the folder 105 to the sensor frame 2. The scraper 100 is provided with an M-shaped blade 101 and a folder 105 for each of the detection rollers 11a to 11j. The contact angle between the tangent line of the roller and the projections 102 and 103, that is, the angle at which the projections 102 and 103 contact the outer periphery of the roller is greater than 90 °, so that the efficiency of scraping off the dust is good. Therefore, two protrusions 102 and 103 corresponding to the forward rotation and reverse rotation of the roller are necessary. The material of the M-shaped blade 101 is preferably resin, aluminum, copper or the like. Similarly, the scraper 110 attached to the reference roller 5a (which also corresponds to 5b to 5j) has the same configuration. Further, a tray 107 for collecting scraped scraps is provided below the reference roller 5a (also corresponding to 5b to 5j). Note that the tray 107 may be provided on only one of the scrapers 100 and 110.

  As a result, the M-shaped blade 101 that contacts at two locations on the outer periphery of the roller can scrape off dust both during forward rotation and reverse rotation of the roller. Further, even if the protrusions 102 and 103 of the M-shaped blade 101 are worn, the spring 104 is pressed, so that dust can be scraped off without deteriorating the performance. Further, since the tray 107 for collecting the scraped-off dust is provided, the dust cannot be scattered and reattachment to the roller does not occur, thereby improving the reliability.

  In the description so far, an eddy current displacement sensor is used as the displacement detector, but a capacitance displacement sensor, an optical displacement sensor, a contact displacement sensor, or the like can be used. Moreover, the paper sheet thickness detecting device of the present invention can be applied to an automatic cash handling device and a bill thickness detecting device of a vending machine.

  In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Thickness detection apparatus, 2 ... Sensor frame, 3 ... Rotating shaft, 4 ... Paper sheets, 5a-5j ... Reference | standard roller, 6, 8, 14, 16 ... Ball bearing, 7, 15 ... Set screw, 18 ... Screw hole, 19 ... pin hole, 10 ... rotating shaft, 11a-11j ... detection roller, 12 ... outer ring, 13 ... elastic member, 26 ... circuit board, 27a-27j ... displacement detection sensor, 28a-28j ... displacement detection sensor

Claims (15)

A plurality of reference rollers having two rotation shafts provided in parallel in the first frame, attached to one of the rotation shafts, and arranged in a direction perpendicular to the paper sheet conveyance direction; A plurality of detection rollers arranged corresponding to the positions of the plurality of reference rollers, the outer rings contacting the reference rollers and rotating around the other of the rotation shafts, and facing each of the plurality of detection rollers A plurality of displacement detection sensors arranged to detect displacement of the plurality of detection rollers, and transporting paper sheets to a contact portion between the plurality of reference rollers and the outer rings of the plurality of detection rollers; In the paper sheet thickness detecting device for detecting the thickness of the paper sheet,
A mounting hole for the ball bearing of the two rotating shafts is provided on the shaft of the two rotating shafts of the first frame,
Both ends of the two rotation shafts of the reference roller and the detection roller are fixed to an inner ring of the ball bearing,
The outer ring of the ball bearing at one end of the reference roller and the detection roller is fixed to the one mounting hole,
An outer ring of the ball bearing at the other end of the reference roller and the detection roller is disposed in the other mounting hole so as to be movable only in the axial direction of the rotating shaft. In the thickness detection apparatus of the paper sheet of Claim 1,
The first frame is a single block structure of a substantially rectangular parallelepiped formed with a through hole between the opposing surfaces;
The surface on which the outer ring of the ball bearings of the reference roller and the detection roller is attached is a parallel surface, and the surface on which the substrate on which the plurality of displacement detection sensors are provided is orthogonal to the parallel surface. Leaf thickness detector. In the banknote determination apparatus incorporating the thickness detection apparatus for paper sheets according to claim 1,
Fixing one of the surfaces of the first frame to which the reference roller and the detection roller are attached to one of the opposing surfaces of the second frame;
The weight of the first frame is supported by a member in which the end of the first frame opposite to the fixed side is fixed to the frame of the second frame opposite to the fixed side. Banknote determination device. In the banknote determination apparatus incorporating the thickness detection apparatus for paper sheets according to claim 2,
Fixing one of the surfaces of the first frame to which the reference roller and the detection roller are attached to one of the opposing surfaces of the second frame;
The weight of the first frame is supported by a member in which the end of the first frame opposite to the fixed side is fixed to the frame of the second frame opposite to the fixed side. Banknote determination device. In the banknote determination apparatus incorporating the thickness detection apparatus for paper sheets according to claim 1,
The thin plate guide that is fixed to the first frame and inserted between adjacent rollers of the reference roller and the detection roller is formed with a recess at an end of the thin plate guide on the insertion side, and is connected to the thin plate guide. A bill judgment device characterized by loosely fitting with a convex portion of a guide. In the banknote determination apparatus incorporating the thickness detection apparatus for paper sheets according to claim 2,
The thin plate guide that is fixed to the first frame and inserted between adjacent rollers of the reference roller and the detection roller is formed with a recess at an end of the thin plate guide on the insertion side, and is connected to the thin plate guide. A bill judgment device characterized by loosely fitting with a convex portion of a guide. In the thickness detection apparatus of the paper sheet of Claim 1,
A thickness of a paper sheet, comprising a blade having two protrusions that are in contact with the outer periphery of at least one of the reference roller and the detection roller, and scraping off foreign matter adhering to the outer periphery of the roller. Detection device. In the thickness detection apparatus of the paper sheet of Claim 2,
A thickness of a paper sheet, comprising a blade having two protrusions that are in contact with the outer periphery of at least one of the reference roller and the detection roller, and scraping off foreign matter adhering to the outer periphery of the roller. Detection device. In the thickness detection apparatus of paper sheets of Claim 7,
An apparatus for detecting the thickness of a paper sheet, comprising a tray for collecting foreign matter scraped off by the blade. In the thickness detection apparatus of the paper sheet of Claim 8,
An apparatus for detecting the thickness of a paper sheet, comprising a tray for collecting foreign matter scraped off by the blade.   A bill handling apparatus comprising the thickness detection apparatus for paper sheets according to claim 1.   A banknote handling apparatus comprising the paper sheet thickness detection apparatus according to claim 2.   The banknote handling apparatus which has a banknote determination apparatus of Claim 3.   The banknote handling apparatus which has the banknote determination apparatus of Claim 4.   The banknote handling apparatus which has a banknote determination apparatus of Claim 5.