JP2008064868A - Sealing structure and recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealing structure wherein a component with confidential data recorded thereon can be easily, surely, and directly sealed, and to provide a recording device equipped with the component having the sealing structure. <P>SOLUTION: The sealing structure for sealing a ROM 23 to be housed in the ROM housing section 22a of a ROM socket 22 mounted on a circuit board 21 includes: a sealing cover 24 covering the ROM housing section 22a of the ROM socket 22; a sealing metal fitting 31 which is inserted into hole sections 21a, 22b, and 24a communicating with the circuit board 21, the ROM socket 22, and the sealing cover 24, and whose connecting rod section 31b formed at the rear end and serving as an engaging section is engaged with the edge parts of the hole sections 21a, 22b, and 24a: a sealing wire 32 to be inserted into a wire insertion hole 31c formed at the tip of a fixing rod section 31a of the sealing metal fitting 31 protruding from the hole sections 21a, 22b, and 24a; and a sealing tag 33 for fixing both ends of the sealing wire 32 inserted into the wire insertion hole 31c. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a sealing structure for sealing a part for recording data and a recording apparatus including the part.

2. Description of the Related Art Conventionally, a recording apparatus used in a system for processing accounting information (POS system or the like) includes a board on which electronic parts such as a memory (ROM) for storing recorded accounting information are mounted. In order to prevent tampering of the inside of the recording device, the screw that stops the case is locked with a wire, and a sealing structure that seals the wire is applied so that the case can be opened without breaking the seal. (For example, refer to Patent Document 1).
Japanese Patent Laid-Open No. 9-68928

By the way, in the recording apparatus, not only the case is sealed to prevent access to the substrate, but also electrical and mechanical to electronic parts such as ROM that is a memory for recording confidential data such as accounting information. It is also important to prevent access.
For this reason, a recording apparatus that handles this type of confidential data is required to have a sealing structure that easily and reliably directly seals the electronic component that records the confidential data.

  The present invention has been made in view of the above circumstances, and provides a sealing structure capable of easily and surely directly sealing a part for recording confidential data, and a recording apparatus including the part provided with the sealing structure. The purpose is to do.

  In order to achieve the above object, a sealing structure of the present invention is a sealing structure for sealing a component housed in a socket mounted on a board, a cover for closing an upper opening of the socket, the board, and the socket And an engagement part formed at the rear end through the hole communicating with the cover and formed at the front end of the seal fitting protruding from the hole. And a sealing tag for fixing both ends of the sealing wire inserted into the wire insertion hole.

According to the sealing structure of this structure, the engagement portion at the rear end of the sealing metal fitting inserted into the hole communicating with the substrate, the socket, and the cover is engaged with the edge of the hole, and the tip of the sealing metal fitting is Since both ends of the wire are inserted into the wire insertion hole and are engaged by the wires fixed by the sealing tag, the cover accommodated in the socket mounted on the board can be covered to seal the component housed in the socket.
That is, it is possible to easily and reliably directly seal a component made of an electronic component that records confidential data or the like.

Moreover, the said sealing metal fitting has a some fixed rod part penetrated by the said hole part, and a connection rod part which connects the rear end of these fixed rod parts, It is characterized by the above-mentioned.
According to this structure, since the connecting rod portion is the engaging portion, the connecting rod portion can be reliably engaged, and at the same time, sealing can be performed at a plurality of locations with one sealing fitting.

Furthermore, the cover is transparent.
According to this structure, the internal components can be visually recognized through the cover.

  The recording apparatus of the present invention is a recording apparatus for recording on a medium, comprising a substrate having the sealing structure described above, and recording information on the medium is recorded on the component. .

  According to the recording apparatus having this structure, since the component is securely sealed on the substrate provided with the component for recording the confidential data related to recording on the medium, the reliability can be greatly improved.

Hereinafter, a sealing structure and a recording apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings.
In the present embodiment, a thermal printer is exemplified as the recording apparatus. Examples of the recording apparatus of the present invention include a copying machine or a facsimile in addition to a printer such as a thermal printer. In the present embodiment, a ROM that records data as an electronic component to be sealed will be described as an example.
1 is an external perspective view of a thermal printer as a recording apparatus according to an embodiment to which the present invention is applied, FIG. 2 is a perspective view of the thermal printer viewed from the bottom side, and FIG. 3 is a fiscal unit attached to the thermal printer. FIG.

A thermal printer uses a thermal head in which a plurality of heating resistors are arranged side by side to print characters on a recording surface of a recording medium (hereinafter referred to as roll paper) that is mainly roll-shaped thermal paper (thermal paper). Is recorded.
As shown in FIG. 1, the thermal printer 100 has a substantially box-shaped exterior configured by assembling a roll paper cover 2 and a cutter cover 3 to a main case 1. The main case 1 constitutes a lower front portion, left and right side surfaces, and a rear surface of the thermal printer 100. Further, the main case 1 extends from the left and right side surfaces of the thermal printer 100 to the upper surface and constitutes a part of the upper surface at a substantially central portion in the front-rear direction. The thermal printer 100 is covered with a cutter cover 3 from the upper front portion to the upper front portion, and the rear end of the thermal printer 100 from the substantially central portion of the upper surface is covered with the roll paper cover 2. Therefore, on the upper surface of the thermal printer 100, the cutter cover 3, the main case 1, and the roll paper cover 2 are disposed in order from the front.

  The roll paper cover 2 can be opened while rotating upward with the rear end of the upper surface of the thermal printer 100 as the center. For example, when the roll paper is set, the roll paper cover 2 is opened. The cutter cover 3 is configured to be able to be opened upward with the base end portion on the upper surface of the thermal printer 100 as a center. It is done.

On the front surface of the thermal printer 100, a recess is formed in the center of the cutter cover 3, and a control panel 6 is disposed at the lower end of the recess. The control panel 6 includes various switches and indicators. Specifically, the control panel 6 includes a paper feed button 6a for instructing delivery of roll paper, an indicator 6b for notifying the operating state of the thermal printer 100, and the like. A power switch 5 for turning on / off the power of the thermal printer 100 is disposed at the lower front corner of the main case 1.
Further, a paper outlet 7 is formed at the boundary between the main case 1 and the roll paper cover 2 on the upper surface of the thermal printer 100. A manual cutter 4 having a cutting blade is provided on the main case 1 side of the paper outlet 7 so that the roll paper discharged from the paper outlet can be pressed against the cutting blade of the manual cutter 4 and cut by hand.

As shown in FIG. 2, the bottom plate 9 constituting the bottom surface of the thermal printer 100 is bent upward at a substantially right angle at the center in the front-rear direction of the thermal printer 100 to form a rear end surface 9 a.
A fiscal unit 11 is attached to the rear end face 9a. As shown in FIG. 3, the fiscal unit 11 includes a fiscal substrate 12 and a fiscal substrate cover 13 that accommodates the fiscal substrate 12.
The fiscal board cover 13 is formed in a substantially box shape with an attachment side to the rear end face 9a of the bottom plate 9 opened, and an opening 13a through which the external connector 14 of the fiscal board 12 is exposed is formed on the rear face.

Screw holes (not shown) are formed on both sides of the external connector 14, and bolts 15 are tightened into these screw holes with the rear surface of the fiscal board cover 13 interposed therebetween. Thereby, the fiscal board cover 13 and the fiscal board 12 are fixed.
The fiscal unit 11 has a fiscal board 12 inserted into an opening (not shown) formed in the rear end surface 9 a of the bottom plate 9, and a connector 12 a provided at the end of the fiscal board 12 is connected to a socket ( It is mounted by inserting it into a not shown.

The fiscal board cover 13 is formed with flanges 13c having insertion holes 13b on both sides thereof. By attaching the fiscal unit 11 to the rear end surface 9a of the bottom plate 9, the flange 13c of the fiscal board cover 13 is provided. Comes into contact with the rear end surface 9a, and a screw hole (not shown) formed in the rear end surface 9a communicates with an insertion hole 13b formed in the flange 13c.
In this state, the screw 16 is inserted into the hole 17a formed in the sealing metal fitting 17, and further passed through the insertion hole 13b of the flange 13c, and then tightened into the screw hole of the rear end surface 9a. 13 is fixed to the rear end surface 9 a of the bottom plate 9.

The seal fitting 17 is formed in a U-shape in a side view with fixed pieces 17b standing on both ends, and a wire insertion hole 17c is formed at the tip of the fixed piece 17b.
In the state where the fiscal unit 11 is mounted on the rear end surface 9 a of the bottom plate 9, a sealing plate 18 is attached to the sealing bracket 17 from the outer side. The sealing plate 18 is L-shaped in cross-sectional view and includes a fixed plate portion 18a and a side plate portion 18b. The fixed plate portion 18a is formed with a slit 18c into which the fixing piece 17b of the sealing metal fitting 17 can be inserted. ing.

The sealing plate 18 is arranged so that the side plate portion 18 b is disposed on the side of the sealing metal fitting 17 on the sealing metal fitting 17 fixed to the rear end surface 9 a of the bottom plate 9 together with the flange 13 c of the fiscal board cover 13 with screws 16. Thus, the fixing piece 17b is inserted into the slit 18c of the fixing plate portion 18a.
Thus, the sealing plate 18 is mounted, and the sealing wire 19 is inserted into the wire insertion hole 17c in the fixing piece 17b of the sealing bracket 17 protruding from the slit 18c of the fixing plate portion 18a of the sealing plate 18, Both ends thereof are fixed to a sealing tag 20 formed from a hard resin.

  Thereby, in the fiscal unit 11, the screws 16 that are fixed to the rear end surface 9 a of the bottom plate 9 of the thermal printer 100 are sealed by the sealing fitting 17, the sealing plate 18, the sealing wire 19, and the sealing tag 20. The sealing tag 20 is given a serial number or ID number at the time of molding.

Next, the fiscal board 12 constituting the fiscal unit 11 attached to the thermal printer 100 will be described.
4 is a perspective view as viewed from the front side of the fiscal substrate, FIG. 5 is a cross-sectional view taken along the line AA of FIG. 4, FIG. 6 is an exploded perspective view of the fiscal substrate, and FIG. It is the perspective view seen from the side.

  As shown in FIGS. 4 to 7, the fiscal board 12 has a circuit board (board) 21 having wiring patterns formed on the front and back sides, and a rectangular ROM in plan view is formed on the surface of the circuit board 21. A socket (socket) 22 is mounted. The ROM socket 22 is formed with a ROM housing portion 22a formed of a concave portion. The ROM housing portion 22a is fitted with a ROM 23 which is an electronic component storing various confidential data. A terminal on the inner surface side of the ROM housing portion 22a is connected. The ROM socket 22 is also provided with terminals on the outer peripheral side thereof, and these terminals are connected to terminal portions of the wiring pattern of the circuit board 21, whereby the ROM 23 is connected to the circuit board 21 via the ROM socket 22. The wiring pattern is electrically connected.

The ROM socket 22 is provided with a sealing cover (cover) 24 on the upper surface side, and the upper opening of the ROM accommodating portion 22a in which the ROM 23 is accommodated is closed by the sealing cover 24. The sealing cover 24 is formed from a transparent acrylic plate, and the label attached to the ROM 23 in the ROM housing portion 22a can be visually recognized through the sealing cover 24 to grasp information about the ROM 23. It is like that.
In the ROM socket 22, holes 22b penetrating the front and back are formed at two opposite corners.
The circuit board 21 and the sealing cover 24 have holes 21a and 24a communicating with the holes 22b of the ROM socket 22, respectively.

  The fixing bar 31a of the sealing metal fitting 31 is inserted into the holes 21a, 22b, and 24a communicated with each other. The seal fitting 31 is formed in a U-shape having a pair of fixing rod portions 31a and a connecting rod portion (engaging portion) 31b in which these fixing rod portions 31a are connected to both ends. The wire insertion hole 31c is formed in the front-end | tip part.

  And this sealing metal fitting 31 is inserted in the hole 21a, 22b, 24a with which the fixed stick | rod part 31a was mutually connected from the back surface side of the circuit board 21, and, thereby, the connection rod part 31b of the sealing metal fitting 31 is a hole. The front end of the fixing rod portion 31 a protrudes to the surface side of the sealing cover 24.

A sealing wire 32 is inserted into the wire insertion hole 31c at the tip of each fixing rod portion 31a of the sealing metal fitting 31 protruding from the surface of the sealing cover 24, and both ends of the sealing wire 32 are molded from hard resin. The seal tag 33 is fixed.
As a result, the ROM 23 is housed in the ROM housing portion 22 a of the ROM socket 22, and further, the sealing metal 31, the ROM socket 22, the sealing cover 24, and the sealing wire 32 in a state where the upper portion is sealed by the sealing cover 24. And a sealing tag 33. The sealing tag 33 is given a serial number or ID number at the time of molding.

In addition, the circuit board 21 of the fiscal board 12 has an area on which the electronic component 41 for processing confidential data is mounted on the back side of the mounting location of the ROM 23. On the back side, a mounting area of the electronic component 41 that processes confidential data is a sealed area 42.
The sealing region 42 is surrounded by a masking member 43, and a sealing resin 44 made of, for example, an epoxy thermosetting resin is filled therein. As a result, the electronic component 41 in the sealing region 42 is covered with the sealing resin 44, and external contact is prohibited.

In the sealing metal fitting 31 which is a member for sealing the ROM 23, the fixing rod portion 31a is inserted into the holes 21a, 22b, and 24a from the surface side of the cured sealing resin 44 in the sealing region 42, and the connecting rod portion 31b is the sealing resin 44. Are arranged along the surface.
The fixing bar 31a of the sealing metal fitting 31 is inserted into the masking member 43 and inserted into the holes 21a, 22b, and 24a.

Here, the case where the electronic component 41 in the sealing region 42 is sealed with the sealing resin 44 will be described.
8 is a perspective view seen from the back side of the circuit board showing the sealing region, FIG. 9 is a perspective view seen from the back side of the circuit board showing the attachment position of the masking member, and FIG. 10 is a filling state of the sealing resin. The perspective view seen from the back surface of the circuit board to show, FIG. 11 is the perspective view seen from the back surface of the circuit board which shows the attachment method of a sealing metal fitting.

When the sealing region 44 shown in FIG. 8 is filled with the sealing resin 44, first, a frame-shaped masking member 43 having a size surrounding the sealing region 42 of the circuit board 21 is prepared. As shown in FIG. 2, the circuit board 21 is attached so as to surround the sealing region 42.
The masking member 43 is formed with a hole sealing part 43a larger than the hole 21a of the circuit board 21, and the hole 21a of the circuit board 21 is masked by the hole sealing part 43a.
The masking member 43 is formed of a flexible material such as a sponge-like urethane foam, and is formed thicker than the filling thickness of the sealing resin 44 that fills the electronic component 41 so as to cover it.

When the masking member 43 is pasted at a predetermined position and the sealing region 42 is enclosed, as shown in FIG. 10, the sealing region 42 enclosed by the masking member 43 is filled with a sealing resin 44 and heated at a predetermined temperature. To cure.
If it does in this way, the electronic component 41 in the sealing area | region 42 will be covered and sealed by this sealing resin 44 with which it was filled and hardened.
In this state, when the sealing metal fitting 31 that seals the ROM 23 is attached to the circuit board 21, the fixing rod portion 31a of the sealing metal fitting 31 is replaced with the hole sealing portion 43a of the masking member 43 as shown in FIG. And is inserted into the communicating holes 21a, 22b, 24a.

Thus, according to the sealing structure according to the above-described embodiment, after the fixing rod portion 31a of the sealing metal fitting 31 inserted into the holes 21a, 22b, and 24a communicating with the circuit board 21, the ROM socket 22, and the sealing cover 24. An engaging portion composed of an end connecting rod portion 31b engages with the edge portion of the holes 21a, 22b, 24a, the tip of the fixing rod portion 31a is inserted into the wire insertion hole 31c, and both ends are sealed by the sealing tag 33. Since it is engaged with the fixed sealing wire 32, the ROM 23 which is an electronic component housed in the ROM socket 22 can be sealed by covering the ROM socket 22 mounted on the circuit board 21 with the sealing cover 24. .
That is, the ROM 23, which is an electronic component for recording confidential data or the like, can be directly and reliably sealed.

The sealing fitting 31 is formed in a U-shape having two fixing rod portions 31a inserted into the holes 21a, 22b, and 24a and a connecting rod portion 31b that connects the rear ends of the fixing rod portions 31a. Therefore, the connecting rod portion 31b can be used as the engaging portion, and can be reliably engaged with the connecting rod portion 31b. At the same time, sealing can be performed at two locations by one sealing fitting 31.
Further, since the sealing cover 24 is transparent, the ROM 23 inside the ROM socket 22 can be visually recognized through the sealing cover 24.

  According to the recording apparatus comprising the thermal printer 100, since the ROM 23 is securely sealed by the circuit board 21 of the fiscal board 12 provided with the ROM 23 for recording confidential data relating to the recording on the roll paper, Can greatly improve the performance.

  In the above-described embodiment, the pair of fixing rod portions 31a are inserted into the holes 21a, 22b, and 24a, so that the connecting rod portion 31b is engaged with the back side of the circuit board 21 as an engaging portion. 31 is used, but two sealing fittings 31 in which engagement portions having a larger diameter than the holes 21a, 22b, 24a are formed at the rear end of the fixing rod portion 31a are used, and the fixing rod portions 31a of these sealing fittings 31 are used. May be inserted into the holes 21a, 22b, and 24a to engage the engaging portion with the back side of the circuit board 21.

In the above-described embodiment, the case where the sealing area 42 is provided on the back surface side has been described as an example. However, the present invention can be applied to the case where the back surface side is not the sealing area 42.
In this case, an insulating material is wound around the connecting rod portion 31b of the seal fitting 31 or an insulating material is provided between the connecting rod portion 31b and the circuit board 21 to ensure insulation from the circuit pattern of the circuit board 21. In this case, the circuit pattern of the circuit board 21 may be formed by avoiding the place where the connecting rod portion 31b is disposed.

  In the above embodiment, the thermal printer is exemplified as the recording apparatus. However, the present invention is not limited to this, and for example, a dot impact type printer or an ink jet type printer may be used. Furthermore, the present invention can be applied to a recording apparatus that records an image by an electrophotographic method such as a copying machine or a facsimile.

1 is an external perspective view of a thermal printer as a recording apparatus according to an embodiment to which the present invention is applied. It is the perspective view which looked at the thermal printer from the bottom side. It is a perspective view which shows the fiscal unit attached to a thermal printer. It is the perspective view seen from the surface side of a fiscal board. It is AA sectional drawing of the fiscal board | substrate in FIG. It is a disassembled perspective view of a fiscal board | substrate. It is the perspective view seen from the back surface side of a fiscal board | substrate. It is the perspective view seen from the back surface of the circuit board which shows a sealing area | region. It is the perspective view seen from the back surface of the circuit board which shows the affixing position of a masking member. It is the perspective view seen from the back surface of the circuit board which shows the filling state of sealing resin. It is the perspective view seen from the back surface of the circuit board which shows the method of mounting | wearing with a sealing metal fitting.

Explanation of symbols

  21 ... Circuit board (board), 21a, 22b, 24a ... Hole, 22 ... ROM socket (socket), 23 ... ROM (component), 24 ... Sealing cover (cover), 31 ... Sealing fitting, 31a ... Fixing bar , 31b ... connecting rod part (engaging part), 31c ... wire insertion hole, 32 ... sealing wire, 33 ... sealing tag, 100 ... thermal printer (recording device).

Claims (4)

A sealing structure for sealing a component housed in a socket mounted on a board,
A cover that closes the upper opening of the socket; a sealing fitting that is inserted into a hole communicating with the substrate, the socket, and the cover; and an engagement portion that is formed at a rear end engages with an edge of the hole; A sealing wire that is inserted into a wire insertion hole formed at a tip portion of the sealing metal fitting protruding from the hole, and a sealing tag that fixes both ends of the wire inserted into the wire insertion hole. Characteristic sealing structure.   2. The sealing structure according to claim 1, wherein the sealing metal fitting includes a plurality of fixing rod portions that are inserted into the hole portions, and a connecting rod portion that connects rear ends of the fixing rod portions.   The sealing structure according to claim 1, wherein the cover is transparent. A recording device for recording on a medium,
A recording apparatus comprising: a substrate on which the sealing structure according to claim 1 is provided; and recording information on the medium is recorded on the component.

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