JP4978112B2 - Fiscal unit and printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fiscal unit which has a simple structure but can assure electrical insulation between a fiscal memory and other components operating as a circuit element on a fiscal memory board and a metal holding part and can prevent manipulation of the fiscal memory, and to provide a printer having the fiscal unit. <P>SOLUTION: A fiscal unit 20 comprises a metal holding part 410 which has a space 441 for inserting and holding a fiscal memory board 10, and contact prevention parts 150,160 which are disposed on the fiscal memory board 10 and prevent contact of the fiscal memory board 10 with the holding part 410 in the state where the fiscal memory board 10 is inserted into the space 441 of the holding part 410 to thereby assure electrical insulation. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a fiscal unit and a printer having a fiscal unit, and in particular, has a fiscal unit and a fiscal unit that can secure electrical insulation of a fiscal memory board on which the fiscal memory is mounted and can prevent tampering of the fiscal memory. Regarding printers.

  An accounting printer used in a retail business or the like has a fiscal memory board, and the fiscal memory is mounted on the fiscal memory board. In order to prevent falsification of the fiscal data stored in the fiscal memory, the legal memory (fiscal law) may be configured so that the fiscal memory board on which the fiscal memory is mounted cannot be easily removed from the cover member of the fiscal unit. ). For this reason, the fiscal memory is required to be covered and fixed with resin.

Conventionally, a substrate sealing structure in which a substrate on which an electronic component is mounted is covered with a metal case and both surfaces of the substrate are sealed with resin in the metal case has been proposed (see, for example, Patent Document 1). ).
JP-A-6-283630

  When the sealing structure by the metal case and resin disclosed in Patent Document 1 is adopted for the structure in which the fiscal memory board is inserted and held in the cover member, the fiscal memory on the fiscal memory board and other circuits are used. It is only the resin part that the functioning part can ensure electrical insulation with respect to the metal cover member.

  However, if the fiscal unit is made thinner to reduce the size of the printer, the cover member becomes thinner, and the gap between the inner surface of the cover member and the fiscal memory board or other functional parts on the circuit is small. Accordingly, the thickness of the resin portion covering the fiscal memory substrate is reduced. For this reason, there is a problem that electrical insulation cannot be secured between the cover member and the fiscal memory on the fiscal memory substrate or other components functioning on the circuit.

  Therefore, in order to solve the above-mentioned problems, the present invention has a simple structure, but electrical insulation between the fiscal memory on the fiscal memory substrate and other components functioning on the circuit and the metal holding portion. It is an object of the present invention to provide a fiscal unit and a printer having the fiscal unit that can secure the performance and prevent tampering of the fiscal memory.

In order to solve the above-described problems, a fiscal unit according to an aspect of the present invention includes a fiscal memory board including a first surface on which a device for preventing data tampering is mounted and a second surface on which a fiscal memory is mounted; A metal holding portion having a space for inserting and holding the memory substrate, and the fiscal memory substrate is inserted in the space of the holding portion in the state where the fiscal memory substrate is inserted into the space. The first surface and the second surface are provided with a contact prevention portion that prevents the memory substrate from contacting the holding portion and ensures electrical insulation, and the holding portion is provided on the first surface of the fiscal memory substrate. and wherein with the protrusion in a surface facing the second surface, the fiscal memory board is accommodated in the space of the holding portion, the Fisukarumemo A sealant covers the device mounted on the first surface of the substrate, the fiscal memory mounted on the second surface of the fiscal memory substrate, and the protrusion provided on the holding portion. And According to this aspect, while having a simple structure, in the fiscal unit, electrical insulation between the fiscal memory on the fiscal memory board and other components functioning on the circuit and the metal holding portion is ensured. be able to.

Fiscal unit according to another aspect of the present invention, preferably the retaining portion, characterized in that it is a case made of metals. According to this aspect, since the fiscal memory substrate is covered in a state of being fixed by the sealant in the space of the holding portion, it is difficult to remove the fiscal memory substrate, and it is ensured that the fiscal data stored in the fiscal memory is falsified. Can be prevented.

  The fiscal unit according to another aspect of the present invention is preferably characterized in that the contact prevention unit is a component that is mounted on the fiscal memory substrate and functions on a circuit. According to this aspect, it is not necessary to separately prepare a part for electrical insulation, and it is only necessary to use the contact preventing portion for the fiscal memory substrate, so that the structure of the fiscal unit can be reduced in thickness and simplified.

  The fiscal unit according to another aspect of the present invention is preferably characterized in that the contact preventing portion is a dummy component that is mounted on the fiscal memory substrate and does not function on a circuit. According to this aspect, it is not necessary to separately prepare a part for electrical insulation, and it is only necessary to use the contact preventing portion for the fiscal memory substrate, so that the structure of the fiscal unit can be reduced in thickness and simplified.

  In the fiscal unit according to another aspect of the present invention, preferably, the mounting height of the contact prevention unit on the fiscal memory substrate is higher than the mounting height of the component mounted on the fiscal memory substrate on the fiscal memory substrate. It is characterized by being set large. According to this aspect, it is possible to reliably prevent electrical contact between each component and the holding portion and ensure electrical insulation.

The fiscal unit according to another aspect of the present invention is preferably characterized in that the contact preventing portion is disposed at four corners of the first surface and the second surface of the fiscal memory substrate. According to this aspect, the simple arrangement of the contact prevention portion can reliably prevent electrical contact between each component of the fiscal memory board and the metal holding portion, thereby ensuring electrical insulation.

A printer having a fiscal unit according to an aspect of the present invention is a printer equipped with a fiscal memory, and includes a first surface on which a device for preventing data tampering is mounted and a second surface on which the fiscal memory is mounted. A fiscal unit having a memory board and a metal holding unit having a space for inserting and holding the fiscal memory board; and a printing unit for printing a receipt, and the fiscal memory board of the fiscal unit includes: A contact preventing portion for preventing electrical contact between the first memory and the fiscal memory substrate in a state where the fiscal memory substrate is inserted into the space of the holding portion to prevent the fiscal memory substrate from contacting the holding portion; The holding unit of the fiscal unit is provided on the second surface, and the fiscal memo Includes a protrusion on a surface facing the first surface and the second surface of the substrate, the fiscal memory board is accommodated in the space of the holding portion, it is mounted on the first surface of the fiscal memory board A sealing agent covers the device, the fiscal memory mounted on the second surface of the fiscal memory substrate, and the protrusion provided on the holding portion. According to this aspect, while having a simple structure, in the fiscal unit, electrical insulation between the fiscal memory on the fiscal memory board and other components functioning on the circuit and the metal holding portion is ensured. be able to.

  According to the fiscal unit of the present invention, while having a simple structure, electrical insulation between the fiscal memory on the fiscal memory board and other components functioning on the circuit and the metal holding portion is ensured. be able to.

  According to the printer having the fiscal unit of the present invention, in the fiscal unit, the fiscal memory on the fiscal memory board and other components functioning on the circuit and the metal holding portion are arranged in a fiscal unit. Electrical insulation can be ensured.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an exploded perspective view showing a preferred embodiment of a fiscal unit and a printer having the fiscal unit of the present invention. FIG. 2 is a perspective view showing another preferred embodiment of a fiscal unit and a printer having the fiscal unit of the present invention.

  The printer 1 shown in FIGS. 1 and 2 has a fiscal unit 20. The fiscal unit 20 includes a fiscal memory board 10. As shown in FIG. 2, the fiscal memory board 10 has a fiscal memory 100 mounted thereon. The printer 1 is also called a fiscal printer, and is used for monitoring and storing fiscal data (also referred to as fiscal information) relating to a sales transaction at the time of a sales transaction. The fiscal memory substrate 10 is also referred to as a fiscal substrate.

  The law (Fiscal Law) requires that the Fiscal memory 100 be configured so that it cannot be easily removed from the Fiscal unit 20 so that Fiscal data stored in the Fiscal memory 100 cannot be tampered with. The contents of Fiscal Law for Accounting (Fiscal Data, Fiscal Information) vary from country to country.

  First, the structure of the printer 1 will be described with reference to FIGS. FIG. 3 is a side view of the printer 1 showing a state where the fiscal unit 20 is attached to the lower portion of the rear portion 5 of the main body 2.

  The printer 1 shown in FIGS. 1 and 2 has a main body 2 and a lower cover 3. The printer 1 prints and discharges, for example, a fiscal receipt to be given to a customer, a journal that is a receipt for a retailer's receipt, stores the total for each day, and adds the total amount for each product item of the receipt. .

  The front part 4 of the main body 2 shown in FIG. 1 discharges, for example, a fiscal receipt or a journal. A rectangular opening 6 is provided below the rear portion 5 of the main body 2.

  As shown in FIG. 3, the fiscal unit 20 is detachably attached to the main body 2 corresponding to the opening 6 of the rear portion 5. This fiscal unit 20 can also be called a fiscal module.

  As shown in FIG. 2, the fiscal unit 20 includes a fiscal memory substrate 10 as a first substrate, an interface substrate 200 as a second substrate, and a metal cover member 300. The fiscal memory substrate 10 and the interface substrate 200 are held in parallel along the Y direction by the cover member 300. In the example shown in FIG. 2, the fiscal memory board 10 and the interface board 200 are both rectangular or square circuit boards. In the illustrated example, since the number of components mounted on the interface substrate 200 side is larger than the number of components mounted on the fiscal memory substrate 10, the interface substrate 200 is larger than the fiscal memory substrate 10.

  Next, the structure of the fiscal memory substrate 10, the interface substrate 200, and the metal cover member 300 of the fiscal unit 20 will be described in detail with reference to FIGS.

  4 is a perspective view showing the cover member 300 and the fiscal memory board 10 from the first direction, and FIG. 5 is a perspective view showing the cover member 300 and the fiscal memory board 10 from the second direction opposite to the first direction. It is. The cover member 300 can also be called a substrate holder.

  First, the cover member 300 will be described. As shown in FIGS. 4 and 5, the cover member 300 is formed in a box shape by bending a metal plate such as an iron plate, for example, and has side portions 301, 302, 303, 304 and a bottom portion 305. ing.

  The side surface portions 301, 302, 303, and 304 are formed by rising 90 degrees from the four sides of the bottom surface portion 305. The side surface portion 301 and the side surface portion 302 are disposed to face each other, and the side surface portion 303 and the side surface portion 304 are disposed to face each other. The area of the side part 301 and the side part 302 is larger than the area of the side part 303 and the side part 304.

  As shown in FIG. 4, the four side surface portions 301, 302, 303, 304 and the bottom surface portion 305 form an accommodation space 320. The insertion end portion side of the interface board 200 shown in FIG. 2 is inserted and held in the opening 321 of the accommodation space 320.

  A holding portion 410 is provided in the accommodation space 320 of the cover member 300 for inserting and holding the fiscal memory substrate 10.

  The side surface portion 303 has an attachment piece portion 306, and the side surface portion 304 has an attachment piece portion 307. The attachment piece portions 306 and 307 are formed by being bent 90 degrees outward from the side surface portion 303 and the side surface portion 304, respectively. The attachment pieces 306 and 307 each have a hole 308 for inserting a bolt.

  As shown in FIG. 2, the cover member 300 of the fiscal unit 20 has a rear portion corresponding to the opening 6 of the main body 310 by passing the bolt 310 through the hole 308 and screwing the bolt 310 into the female screw 311 of the main body 2. 5 can be detachably fixed. The size of the opening 321 of the cover member 300 shown in FIG. 4 corresponds to the size of the opening 6 of the main body 2 shown in FIG.

  In the state where the fiscal unit 20 is fixed to the main body 2 in this way, a part of the fiscal memory board 10 and a part of the interface board 200 are positioned in the main body 2 as shown in FIG.

  Next, the holding unit 410 for holding the fiscal memory substrate 10 shown in FIGS. 4 and 5 will be described.

  The holding portion 410 of the cover member 300 has a space 441 that is a housing space, and the fiscal memory substrate 10 is inserted into the space 441. The holding portion 410 of the cover member 300 is a protection device for protecting the fiscal memory substrate 10, the fiscal memory 100, and components that function on the circuit.

  The holding portion 410 can also be referred to as a case or a pocket portion, and the holding portion 410 is provided on the inner surface 330 side of the side surface portion 302 in the accommodation space 320 of the cover member 300.

  The holding portion 410 is a thin container formed by the inner surface 330 of the side surface portion 302, the side surface portion 411, the side surface portions 412 and 413, and the bottom surface portion 414. The inner surface 330, the side surface portion 411, and the side surface portions 412 and 413 of the side surface portion 302 form a rectangular opening 440.

  FIG. 6 is a plan view showing the holding unit 410. The length L of the opening 440 shown in FIGS. 4 and 6 is slightly larger than the length M of the fiscal memory substrate 100, and the width D of the opening 440 is set larger than the thickness N of the fiscal memory substrate 100. Yes.

  As shown in FIGS. 4 and 6, a plurality of protrusions 450 protrude from the inner surface 330 of the side surface portion 302 and the inner surface 491 of the side surface portion 411. Each protrusion 450 of the inner surface 330 and each protrusion 450 of the inner surface 491 are formed at positions facing each other, for example.

  The protrusions 450 of the inner surface 330 are preferably formed side by side at a position close to the opening 440 side on the inner surface 330. The protrusions 450 of the inner surface 491 are preferably formed side by side at a position close to the opening 440 side on the inner surface 491. That is, each protrusion 450 is preferably formed at a position near the opening 440 of the holding section 410 and at a position away from the bottom surface section 414. Each protrusion 450 has, for example, a circular cross section in the illustrated example.

  Next, an example of the shape of the fiscal memory board 10 shown in FIG. 2 and an example of the shape of the interface board 200 will be described.

  As shown in FIG. 2, the fiscal memory substrate 10 and the interface substrate 200 are inserted and held with respect to the cover member 300 of the fiscal unit 20.

  The fiscal memory substrate 10 is inserted and held in a space 441 in the holding portion 410 as shown in FIGS. As shown in FIGS. 2 and 3, the interface board 200 is inserted and held in the accommodation space 320 of the cover member 300. The fiscal memory substrate 10 is held so as to be parallel to the interface substrate 200.

  As shown in FIGS. 4 and 5, the fiscal memory substrate 10 has a first surface 10A and a second surface 10B.

  As illustrated in FIG. 4, the CPLD 11 and, for example, other components 100M and 100N that function on a circuit are mounted on the first surface 10A of the fiscal memory substrate 10.

  As illustrated in FIG. 5, the fiscal memory 100, other electronic components 100H that function on a circuit, and a connector 100T are mounted.

  The CPLD 11 shown in FIG. 4 is electrically connected to the main CPU mounted on the interface board 200 of FIG. 2 and the fiscal memory 100 shown in FIG. The CPLD 11 is a device in which a programmable logic circuit is written, and controls writing / reading to / from the fiscal memory 100. The CPLD 11 has a function of preventing data falsification.

  The fiscal memory 100 uses a type of memory called a one-time ROM, which records data on sales tax and can be written only once, to prevent falsification.

  A connector 100T shown in FIG. 5 is electrically connected to one end of the flexible flat cable 100F, and another connector 100G is electrically connected to the other end of the flexible flat cable 100F. The connector 100G is electrically and mechanically connected to the interface board 200 side as shown in FIG. Thereby, the circuit of the fiscal memory board 10 and the circuit of the interface board 200 are electrically connected through the flexible flat cable 100F.

  FIG. 7 shows the first surface 10A and the second surface 10B of the fiscal memory substrate 10, and particularly shows an arrangement example of the contact preventing portions 150 and 160 on the first surface 10A and the second surface 10B.

  As shown in FIG. 7, the first surface 10 </ b> A of the fiscal memory substrate 10 is mounted with a contact prevention unit 150 having electrical insulation properties at almost four corner positions. These four contact prevention parts 150 secure a space for electrical insulation between the first surface 10A of the fiscal memory substrate 10 and the inner surface 491 of the side surface part 411 shown in FIG. Electrical insulation is ensured by eliminating electrical contact between the CPLD 11 and other components 100M and 100N that function on the circuit and the inner surface 491 of the side surface portion 411.

  The contact prevention unit 150 may be a component that is mounted on the first surface 10A of the fiscal memory substrate 10 and functions on a circuit, such as a capacitor or a diode, or is mounted on the first surface 10A of the fiscal memory substrate 10. Dummy parts that do not function on the circuit may also be used.

  Further, as shown in FIGS. 5 and 7, the second surface 10 </ b> B of the fiscal memory substrate 10 is provided with a contact prevention unit 160 having electrical insulation at almost four corner positions. These four contact prevention parts 160 secure a space for electrical insulation between the second surface 10B and the inner surface 330 of the fiscal memory substrate 10 shown in FIG. And electrical insulation between the inner surface 330 and the inner surface of the inner surface 330 is eliminated.

  The contact prevention unit 160 may be a component that is mounted on the second surface 10B of the fiscal memory substrate 10 and functions on a circuit, such as a capacitor or a diode, or is mounted on the second surface 10B of the fiscal memory substrate 10. Dummy parts that do not function on the circuit may also be used. The contact prevention parts 150 and 160 are positioned at positions corresponding to each other in the illustrated example.

  As described above, the contact prevention units 150 and 160 set a mechanical distance between the first surface 10A and the second surface 10B of the fiscal memory substrate 10 and the inner surfaces 330 and 491 of the holding unit 410. Electrical insulation with respect to the metal holding portion 410 can be ensured.

  The mounting height (mounting height) on the first surface 10A of the contact prevention unit 150 is the CPLD 11 mounted on the fiscal memory substrate 10 and the first surface 10A such as other components 100M and 100N that function on other circuits. It is set larger than the mounting height (mounting height). Thereby, it can prevent reliably that each component contacts the inner surface 491 of the side part 411 electrically.

  The mounting height (mounting height) on the second surface 10B of the contact prevention unit 160 is the mounting height (mounting height) on the second surface 10B such as the fiscal memory 100 and other components 100H mounted on the fiscal memory substrate 10. It is set larger than (a). Thereby, each component can be reliably prevented from being in electrical contact with the side surface portion 330 of the holding portion 410.

  The interface board 200 shown in FIG. 2 is mounted with connectors C1, C2, C3, a main CPU (central processing unit), a memory, and the like. The connector C3 of the interface board 200 can be electrically and mechanically connected to the main board 500 disposed in the main body 2 of the printer 1. The interface board 200 is electrically connected to a host computer (HOST) 700 using connectors C1 and C2.

  Next, a manufacturing method of a fiscal unit in which the fiscal memory substrate 10 is inserted and held in the space 441 of the holding portion 410 of the cover member 300 and is fixed will be described.

  As shown in FIG. 8, the sealant 560 is supplied from the sealant supply unit 550 through the syringe 551 into the space 441 of the holding unit 410 of the cover member 300. As a result, as shown in FIGS. 9 and 10, a predetermined amount of the sealing agent 560 is filled into the space 441 of the holding portion 410. At this time, there are a plurality of protrusions 450 in the holding part 410, but there is no hindrance to filling the sealant 560. As the sealant 560, for example, a resin such as an epoxy resin can be used.

  Next, as shown in FIG. 9, the fiscal memory substrate 10 is inserted into the space 441 of the holding portion 410 along the E direction. As shown in FIGS. 11 and 12, the fiscal memory substrate 10 is accommodated and held in a space 441 of the holding portion 410 except for a part thereof. As shown in FIG. 12, the components on the first surface 10 </ b> A and the components on the second surface 10 </ b> B of the fiscal memory substrate 10 are sealed by being covered with a sealant 560.

  Accordingly, as shown in FIG. 12B, the CLPD 11 on the first surface 10A side and the fiscal memory 100 on the second surface 10B side are reliably sealed by being covered with the sealant 560. As the amount of the sealing agent 560 filled in the space 441 of the holding unit 410, the sealing agent 560 is the components of the first surface 10A, the components of the second surface 10B, and the protrusions of the fiscal memory substrate 10. 450 can cover the space between the first surface 10A, the second surface 10B, and the holding portion 410.

  By the way, as shown in FIGS. 12A and 12B, on the first surface 10A of the fiscal memory substrate 10, the contact preventing portions 150 are mounted at almost four corner positions. On the surface 10B, contact prevention portions 160 are mounted at substantially four corner positions. For this reason, the four contact preventing portions 150 eliminate electrical contact between the first surface 10A of the fiscal memory substrate 10 and the inner surface 491 of the side surface portion 411 shown in FIG. The electrical contact between the second surface 10B and the inner surface 330 of the fiscal memory substrate 10 can be eliminated to ensure electrical insulation.

  Further, as shown in FIGS. 12A and 12B, a plurality of protrusions 450 are provided in advance in the holding portion 410, but the sealing agent 560 covers each protrusion 450. The holding portion 410 is filled. Thus, after the sealing agent 560 is hardened and the fiscal memory substrate 10 is fixed in the holding unit 410, a person who intends to tamper with the fiscal data in the fiscal memory 100 removes the fiscal memory substrate 10 from FIG. The plurality of protrusions 450 serve as stoppers that prevent the sealant 560 from being lifted up even if it is lifted in the Z direction and pulled out from the holding portion 410. Therefore, the fiscal memory substrate 10 cannot be taken out from the holding portion 410 of the fiscal unit 20 without leaving a trace on the fiscal memory substrate 10 itself or the sealant 560 covering the fiscal memory substrate 10. For this reason, falsification of the fiscal memory 100 can be reliably prevented.

  As described above, since the fiscal memory board 10 cannot be easily removed from the holding portion 410 of the cover member 300 of the fiscal unit 20, tampering of the fiscal data stored in the fiscal memory 100 of the fiscal memory board 10 is performed. It can be surely prevented.

  Since the fiscal memory substrate 10 is fixed by the sealant 560 and is difficult to be removed by the protrusion 450, even if the fiscal memory substrate 10 is forcibly removed from the holding portion 410 of the cover member 300, the fiscal memory Since traces of damage remain in the sealing agent 560 covering the fiscal memory 100 of the substrate 10, in this case, for example, it can be considered that the fiscal data of the fiscal memory 100 has been falsified.

  In the example described above, as shown in FIG. 9, the sealant 560 is first injected into the holding unit 410, and then the fiscal memory substrate 10 is inserted into the holding unit 410. Since the sealing memory 560 is inserted into the holding unit 410 before the fiscal memory substrate 10 is inserted into the holding unit 410 in this way, the sealing agent 560 is disposed on the inner surface of the holding unit 410 and each of the fiscal memory substrates 10. The sealant 560 can reliably fill between the components, and the sealant 560 can reliably cover the components and the protrusions 450 of the fiscal memory substrate 10. Conversely, the sealing agent 560 may be injected into the holding unit 410 after the fiscal memory substrate 10 is inserted into the holding unit 410, but in this case, between the inner surface of the holding unit 410 and the fiscal memory substrate 10. Since it is necessary to slowly inject the sealant 560, it takes time to inject the sealant 560.

  Further, the fiscal memory board 10 has contact preventing portions 150 and 160, and when the fiscal memory board 10 is inserted into the cover member 300 and fixed, the fiscal memory board 10 is separately electrically connected to the cover member 300. There is no need to create separate parts for insulation. Accordingly, the structure of the fiscal unit 20 can be simplified, and the holding portion 410 can be made as close to the thickness of the fiscal memory substrate 10 as possible, so that the fiscal unit 20 can be thinned.

  Since only the process of mounting the contact prevention units 150 and 160 on the fiscal memory substrate 10 is performed additionally, an extra manufacturing process for insulating the substrate is not necessary.

  Since the contact preventing portions 150 and 160 are mounted on the fiscal memory substrate 10, a space can be surely formed between the fiscal memory substrate 10 and the holding portion 410, and a sealing agent such as resin can be easily formed in this space. Moreover, it can be reliably filled.

  The first and second surfaces of the fiscal memory substrate 10 are arranged with high-level components in a well-balanced manner. Even if the fiscal memory substrate 10 is inserted into the holding portion 410 in a narrow space, the fiscal memory substrate 10 The electrical insulation between each of the 10 components and the metal holding portion 410 can be ensured.

  In the embodiment of the present invention, the fiscal unit 20 holds and protects the fiscal memory board 10 on which the fiscal memory 100 is mounted. The fiscal unit 20 includes a metal holding portion 410 having a space 441 for inserting and holding the fiscal memory substrate 10, and the fiscal memory substrate 10 inserted in the space 441 of the holding portion 410. In this state, contact prevention units 150 and 160 are provided that prevent the fiscal memory substrate 10 from contacting the holding unit 410 and ensure electrical insulation.

  Thereby, while having a simple structure, electrical insulation between the fiscal memory on the fiscal memory substrate and other components functioning on the circuit and the metal holding portion can be ensured.

  In the embodiment of the present invention, the holding unit 410 is a metal case that houses and holds the fiscal memory substrate 10, and the fiscal memory substrate 10 is fixed to the space 441 of the holding unit 410 so as to cover the fiscal memory 100. The sealing agent 560 for performing is arrange | positioned. This makes it difficult to remove the fiscal memory substrate 10 because it is covered with the sealing agent 560 in the space 441 of the holding portion 410, and the fiscal data stored in the fiscal memory 100 is difficult to remove. Tampering can be reliably prevented.

  In the embodiment of the present invention, the contact prevention units 150 and 160 are components that are mounted on the fiscal memory substrate 10 and function on a circuit, or the contact prevention units 150 and 160 are mounted on the fiscal memory substrate 10 and circuit. It is a dummy part that does not function above. Accordingly, it is not necessary to separately prepare a part for electrical insulation, and it is only necessary to use the contact preventing portions 150 and 160 for the fiscal memory substrate 10, so that the structure of the fiscal unit can be reduced in thickness and simplified.

  In the embodiment of the present invention, the contact prevention unit is disposed on at least one surface of the fiscal memory substrate 10. As a result, when conductors such as components and circuit wiring patterns are arranged on only one surface of the fiscal memory board 10, the structure of the fiscal memory board 10 and the structure of the fiscal unit 20 can be simplified. I can plan.

  In the embodiment of the present invention, the mounting height of the contact prevention units 150 and 160 on the fiscal memory substrate 10 is set to be larger than the mounting height of the components mounted on the fiscal memory substrate 10 on the fiscal memory substrate 10. . Thereby, electrical contact between each component and the holding portion can be reliably prevented and electrical insulation can be ensured.

  In the embodiment of the present invention, the contact preventing portions are arranged at the four corners of the fiscal memory substrate 10. Thereby, by simple arrangement | positioning of a contact prevention part, the electrical contact between each component of the fiscal memory board | substrate 10 and a metal holding | maintenance part can be prevented reliably, and electrical insulation can be ensured.

  By the way, this invention is not limited to the said embodiment, A various modified example is employable.

  As the sealant 560, for example, a material having an electrical insulating property other than a resin such as an epoxy resin can be used.

  The protrusions 450 are formed in, for example, four points on the inner surface 330 and the side surface part 411, but the number and shape of the protrusions 450 are not particularly limited. For example, as shown in FIG. 13, the protrusion 450 </ b> T is formed in a linear shape along the opening 440.

  The protrusion is formed at a position close to the opening 440 side, but is not limited to this and may be at another position.

  In addition, for example, a part that functions on a circuit or a dummy part that does not function on a circuit can be used for the contact prevention units 150 and 160, but other types of parts or protrusions having electrical insulation can be provided.

  The contact prevention unit is provided on both sides of the fiscal memory substrate. However, when the fiscal memory and other circuit-functional components are provided on one side of the fiscal memory substrate and no conductive material such as components and circuit wiring pattern is formed on the other side, for example, The contact preventing portion is disposed on at least one surface thereof. That is, the contact preventing portion can be provided only on one side of the fiscal memory substrate.

1 is a perspective view illustrating a preferred embodiment of a fiscal unit and a printer having the fiscal unit of the present invention. FIG. 1 is a perspective view illustrating a preferred embodiment of a fiscal unit and a printer having the fiscal unit of the present invention. FIG. FIG. 4 is a side view of the printer showing a state in which a fiscal unit is attached to the lower part of the rear part of the main body. It is a perspective view which shows a metal cover member and a fiscal memory board | substrate from a 1st direction. It is a perspective view which shows a metal cover member and a fiscal memory board | substrate from a 2nd direction. It is a top view which shows the holding | maintenance part before being filled with sealing agent. It is a figure which shows the example of arrangement | positioning of the contact prevention part in the 1st surface and 2nd surface of a fiscal memory board | substrate. It is a perspective view which shows the state with which a sealing agent is filled. It is a perspective view which shows the holding | maintenance part after being filled with the sealing agent. It is a figure which shows the holding | maintenance part after being filled with the sealing agent. It is a perspective view which shows the state by which the fiscal memory board was inserted and hold | maintained at the holding | maintenance part. It is a figure which shows the state by which the fiscal memory board was inserted and hold | maintained at the holding | maintenance part. It is a figure which shows another embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Printer 2 Printer body 10 Fiscal memory board (first board)
10A First surface of fiscal memory board
10B Second surface of fiscal memory board 20 Fiscal unit
100 Fiscal memory 150 Contact prevention part
160 Contact prevention part
200 Interface board (second board) 300 Cover member
410 Holding part 441 Space of holding part
560 Sealant

Claims (7)

A fiscal memory board having a first surface on which a device for preventing data tampering is mounted and a second surface on which a fiscal memory is mounted;
A metal holding portion having a space for inserting and holding the fiscal memory substrate,
The fiscal memory substrate includes a contact prevention unit that prevents electrical contact between the fiscal memory substrate and the holding unit when the fiscal memory substrate is inserted into the space of the holding unit. Provided on the first surface and the second surface,
The holding portion includes a protrusion on a surface facing the first surface and the second surface of the fiscal memory substrate,
The fiscal memory substrate is housed in the space of the holding unit, and the device mounted on the first surface of the fiscal memory substrate, the fiscal memory mounted on the second surface of the fiscal memory substrate, and A fiscal unit, wherein a sealant covers the protrusion provided on the holding portion. The holding portion includes, fiscal unit according to claim 1, which is a case made of metals.   The fiscal unit according to claim 2, wherein the contact prevention unit is a component that is mounted on the fiscal memory substrate and functions on a circuit.   The fiscal unit according to claim 2, wherein the contact prevention unit is a dummy component that is mounted on the fiscal memory substrate and does not function on a circuit.   2. The mounting height of the contact prevention unit on the fiscal memory substrate is set to be larger than the mounting height of a component mounted on the fiscal memory substrate on the fiscal memory substrate. The listed fiscal unit.   The fiscal unit according to claim 5, wherein the contact prevention unit is disposed at four corners of the first surface and the second surface of the fiscal memory substrate. A printer with fiscal memory,
Fiscal memory substrate having a first surface on which a device for preventing data tampering is mounted and a second surface on which the fiscal memory is mounted, and a metal holding having a space for inserting and holding the fiscal memory substrate A fiscal unit having a section;
A printing section for printing receipts,
The fiscal memory substrate of the fiscal unit ensures electrical insulation by preventing the fiscal memory substrate from coming into contact with the holding portion in a state where the fiscal memory substrate is inserted into the space of the holding portion. A contact preventing portion provided on the first surface and the second surface;
The holding unit of the fiscal unit includes a protrusion on a surface facing the first surface and the second surface of the fiscal memory substrate,
The fiscal memory substrate is housed in the space of the holding unit, and the device mounted on the first surface of the fiscal memory substrate, the fiscal memory mounted on the second surface of the fiscal memory substrate, and A printer having a fiscal unit, wherein a sealing agent covers the protrusion provided on the holding portion.

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