JP2007024291A - Sealing screw, recording device, and sealing method of recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealing screw, a recording device, and a sealing method of a recording device capable of easily and surely sealing a substrate in a recording device provided with a substrate for processing recording data.
In a thermal printer having a configuration in which a recording mechanism is provided on a base frame, a non-connection side end of a second substrate is supported by an interface substrate cover, and the interface substrate cover is sealed. The screw 32 is fixed to the bottom plate 29. The sealing screw 32 includes a plurality of wire through holes penetrating in different directions and not intersecting with each other and passing through a shaft portion of the screw in the radial direction, and the wire 33 is inserted into any one of the wire through holes. Both ends of the were sealed with a sealing tool 34.
[Selection] Figure 5

Description

  The present invention relates to a sealing screw for sealing a recording apparatus provided with a substrate for processing data to be recorded, a recording apparatus sealed by the sealing screw, and a sealing method in the recording apparatus.

2. Description of the Related Art Conventionally, a recording apparatus that records data on a recording medium such as paper includes a substrate on which various circuits for performing various processing of data to be recorded are mounted. Among them, a recording apparatus used in a system (POS system or the like) for processing accounting information includes a board having a memory or the like for storing recorded accounting information (for example, see Patent Document 1). ).
Japanese Patent Laid-Open No. 5-120567

  By the way, in the recording apparatus described above, in order to securely store the accounting information, there is a case where sealing is performed so that the board on which the memory or the like is mounted cannot be removed or replaced. However, in order to reliably seal, a complicated operation has to be performed, and a simpler and more reliable method of sealing has been demanded.

  The present invention has been made in view of the above-described circumstances, and in a recording apparatus provided with a substrate for processing data to be recorded, a sealing screw, a recording apparatus, and a sealing apparatus that can perform sealing easily and reliably, and It is an object to provide a sealing method for a recording apparatus.

In order to solve the above-mentioned problems, the present invention is characterized by comprising a plurality of wire through holes that penetrate the shaft portion of the screw in the radial direction, and the plurality of wire through holes penetrate in different directions and do not intersect. .
According to this configuration, when the member to be sealed is screwed and the screw is locked with a wire or the like to perform sealing, the wire through hole is used to connect the wire regardless of the rotation angle of the sealing screw at the time of screw tightening. Since it opens to the position where it is easy to pass, it can seal reliably through a wire by simple operation.

The present invention provides a base frame on which a recording mechanism portion is placed, a first substrate erected substantially perpendicularly to the base frame, and a second substrate inserted and connected to a slot of the first substrate. The non-connecting side end of the second substrate is supported by the substrate supporting portion, and the substrate supporting portion is fixed to the fixing portion by the wire sealing screw, and the wire sealing screws are in different directions. A plurality of wire through holes penetrating through and not crossing the shaft portion of the screw in the radial direction are provided, and the wire is inserted into one of the wire through holes and the through hole formed in another portion, and both ends of the wire are inserted. The part is sealed with a sealing tool.
According to this configuration, the base frame on which the recording mechanism unit is placed, the first substrate erected substantially perpendicularly to the base frame, and the second board inserted and connected to the slot of the first substrate. A non-connecting side end of the second substrate is supported by the substrate supporting portion, the substrate supporting portion is fixed to the fixing portion by the wire sealing screw, and the wire sealing screws are different from each other. A screw having a plurality of wire through holes penetrating in the direction and not intersecting with each other in a radial direction through a shaft portion of the screw, wherein the wire is passed through any one of the wire through holes and the through hole formed in another portion. Since both ends of this wire were sealed with a sealing tool, the wire through hole opens at a position where the wire can be easily passed through regardless of the rotation angle of the wire sealing screw during screw tightening. Work to do There is very easy, it is possible to reliably seal the second substrate.

  In the present invention, the through hole formed in the other part may be a wire through hole of another wire sealing screw. In this case, a plurality of wire sealing screws can be easily and reliably sealed with one wire.

The present invention provides a base frame on which a recording mechanism portion is placed, a first substrate erected substantially perpendicularly to the base frame, and a second substrate inserted and connected to a slot of the first substrate. The non-connecting side end of the second board is supported by the board support part, and the board support part is fixed to the fixing part by the wire sealing screw. The wire sealing screw is a shaft part of the screw. A wire through hole that penetrates the screw in the radial direction, and a cap is placed so as to cover the head of the screw, and both ends of the wire that is inserted through the cap through hole and the wire through hole of the cap are sealed. It is characterized by having been sealed by.
According to this configuration, the base frame on which the recording mechanism unit is placed, the first substrate erected substantially perpendicularly to the base frame, and the second board inserted and connected to the slot of the first substrate. A non-connecting side end of the second substrate is supported by the substrate supporting portion, and the substrate supporting portion is fixed to the fixing portion by the wire sealing screw. A wire through-hole that penetrates the shaft portion in the radial direction is provided, and a cap is placed to cover the head of the screw, and both ends of the wire that is inserted through the cap through-hole are aligned and sealed. Since the wire is easily passed regardless of the rotation angle of the wire sealing screw at the time of screw tightening, the work of sealing the screw through the wire is extremely easy, and the second substrate is securely attached. Can be sealed Kill. In addition, since only one wire sealing screw can be reliably sealed, it is possible to seal a large number of wire sealing screws independently, or to seal the second substrate using only one wire sealing screw. It is also possible to do.

The present invention provides a base frame on which a recording mechanism portion is placed, a first substrate erected substantially perpendicularly to the base frame, and a second substrate inserted and connected to a slot of the first substrate. The non-connecting side end of the second substrate is supported by the substrate supporting portion, and the substrate supporting portion is fixed to the fixing portion by the sealing means, and the sealing means screws the substrate supporting portion with screws. A wire sealing screw, a base that is fastened together with the substrate support portion by the wire sealing screw, and a cap that fits inside the base, and a wire through hole that communicates with the base and the cap. , And both ends of the wire inserted through the wire through hole are sealed with a sealing tool.
According to this configuration, the base frame on which the recording mechanism unit is placed, the first substrate erected substantially perpendicularly to the base frame, and the second board inserted and connected to the slot of the first substrate. A non-connecting side end of the second substrate is supported by the substrate supporting portion, and the substrate supporting portion is fixed to the fixing portion by the sealing means, and the sealing means is screwed to the substrate supporting portion. A wire sealing screw, a pedestal that is fastened together with the substrate support by the wire sealing screw, and a cap that fits inside the pedestal, and a wire through hole that communicates with each other is formed in the pedestal and the cap. Since both ends of the wire inserted through the wire through hole are sealed by the sealing tool, the wire sealing screw is concealed by the base and the cap in the sealing means, and the cap is connected to the base by the wire. Since the fixed reliably seal the second substrate. In addition, since the wire can be sealed by passing the wire through the pedestal and the wire through-hole of the cap that communicate with each other regardless of the rotation angle of the wire sealing screw at the time of screw tightening, the sealing work is extremely easy. Further, since the substrate support portion and the fixing portion to be sealed need only have holes for fastening the wire sealing screws, they can be widely applied to recording apparatuses having various structures.

The present invention provides a base frame on which a recording mechanism portion is placed, a first substrate erected substantially perpendicularly to the base frame, and a second substrate inserted and connected to a slot of the first substrate. The non-connection side end of the second substrate is supported by a substrate support portion, the substrate support portion is fixed to the fixed portion so that the second substrate cannot be pulled out, and the substrate support portion is sealed by a sealing means. It is characterized by being sealed so that it cannot be detached.
According to this configuration, the base frame on which the recording mechanism unit is placed, the first substrate erected substantially perpendicularly to the base frame, and the second board inserted and connected to the slot of the first substrate. And a substrate support portion supporting the non-connection side end of the second substrate, fixing the substrate support portion to the fixing portion so that the second substrate cannot be pulled out, and sealing the substrate support portion. Since it is sealed so that it cannot be detached, the second substrate provided in the recording apparatus can be easily and reliably sealed.

  In the present invention, when the second substrate included in the recording apparatus is screwed and sealed, it can be easily sealed using a wire or the like regardless of the rotation angle of the screw at the time of screw tightening, so that it is extremely easy. And the 2nd board | substrate can be sealed reliably.

[First Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an external perspective view of a thermal printer 100 as a recording apparatus according to a first embodiment to which the present invention is applied. The thermal printer 100 uses a thermal head 8 (FIG. 3) in which a plurality of heating resistors are arranged side by side to record a recording medium (hereinafter referred to as roll paper) that is mainly roll-shaped thermal paper (thermal paper). An image including characters is recorded on the surface.
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 about the rear end of the upper surface of the thermal printer 100. For example, the roll paper cover 2 is opened when a roll paper is set in a roll paper holder 26 (FIG. 2) described later. The cutter cover 3 is configured to be opened upward about the base end portion of the upper surface of the thermal printer 100. For example, the cutter cover 3 is opened when setting an auto cutter unit 9 (FIG. 2) to be described later. The recording operation is closed).

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 that are electrically connected to a circuit on a main substrate 10 (FIG. 3) as a first substrate, which will be described later. Specifically, the control panel 6 instructs the delivery of roll paper. For example, 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 16 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 edge is provided on the main case 1 side of the paper outlet 16, and the roll paper discharged from the paper outlet 16 can be pressed by the cutting blade of the manual cutter 4 and cut by hand. .

FIG. 2 is a perspective view of the recording mechanism unit 20.
As shown in FIG. 2, the recording mechanism unit 20 built in the thermal printer 100 includes a main body frame 20f including a left side frame 21, a right side frame 22, and a base frame 24 (fixed portion).
The base frame 24 is configured by bending a substantially horizontal upper plate, a front plate 24d formed by bending a front end portion of the upper plate downward at a substantially right angle, and a left end portion of the upper plate being bent downward at a substantially right angle. Left side plate 24e and a right side plate 24f formed by bending the right end of the upper plate downward substantially at a right angle. The power switch 5 described above is disposed at the corner of the front side plate 24d, and the left side plate 24e and the right side plate 24f are provided with two leg portions 28 that protrude from the bottom surface side of the thermal printer 100 and contact the installation surface. Has been.

On the base frame 24, the left side frame 21 and the right side frame 22 are disposed so as to face each other at both ends of the recording mechanism 20, and the front side is located between the left side frame 21 and the right side frame 22. A frame 23 is stretched over.
A front substrate cover 12 and a rear substrate cover 13 are erected substantially vertically with respect to the base frame 24 at the front portions of the left side frame 21 and the right side frame 22, and the auto cutter unit 9 is placed thereon. Yes.
A roll paper holder 26 that accommodates roll paper is disposed at the rear of the left side frame 21 and the right side frame 22. Above the roll paper holder 26, the roll paper cover frame 25 is supported by the left side frame 21 and the right side frame 22 via hinges 27. The above-described roll paper cover 2 (FIG. 1) is fixed to the roll paper cover frame 25 and can be opened upward together with the roll paper cover frame 25 with the hinge 27 as a fulcrum.

FIG. 3 is a cross-sectional view of the thermal printer 100.
As shown in FIG. 3, a head frame 80 is bridged between the left side frame 21 and the right side frame 22 between the roll paper holder 26 and the front frame 23, and the thermal head 8 is disposed on the head frame 80. Is done. The thermal head 8 includes a large number of heating elements (not shown) arranged in a straight line in the longitudinal direction (that is, the width direction of the roll paper), and by heating the roll paper in contact with the recording surface of the roll paper, This is a recording head for recording an image including characters.
A platen 7 is disposed at the front end of the roll paper cover frame 25 so as to face the thermal head 8. The platen 7 is a round platen that is rotated by the power of a conveyance motor (not shown), and conveys roll paper by the rotation operation. That is, the platen 7 is in contact with the back surface of the roll paper drawn out from the roll paper holder 26, and is continuously pulled out from the roll paper holder 26 and conveyed upward in the drawing toward the paper outlet 16. To do.
The auto-cutter unit 9 located above the platen 7 and the thermal head 8 includes a movable blade 9a and a fixed blade 9b facing the movable blade 9a across the conveyance path of the roll paper. By operating, the roll paper conveyed by the platen 7 is sandwiched and cut between the movable blade 9a and the fixed blade 9b.

  The platen 7 and the fixed blade 9b are supported by the front portion of the roll paper cover frame 25, and move upward and backward together with the roll paper cover frame 25 when the roll paper cover 2 is opened. That is, by opening the roll paper cover 2, the thermal head 8 and the movable blade 9a are separated from the platen 7 and the fixed blade 9b, and the roll paper can be set as described later.

The end of the bottom plate of the auto cutter unit 9 is bent upward to form a guide 9c, which guides the roll paper conveyed by the platen 7 between the movable blade 9a and the fixed blade 9b.
The roll paper holder 26 located behind the platen 7 is provided with a near-end detector 17 for detecting the remaining amount of the roll paper. Based on the detection result of the near-end detector 17, the roll paper is detected by the indicator 6b. The remaining amount is notified.

The procedure for setting the roll paper in the thermal printer 100 is as follows. First, the roll paper cover 2 is opened, and the roll paper is loaded into the roll paper holder 26. Subsequently, the leading end of the roll paper is pulled out until it reaches the top of the paper outlet 16, and the roll paper cover 2 is bound in this state. At this time, the leading edge of the roll paper is naturally sandwiched between the movable blade 9 a and the fixed blade 9 b and between the thermal head 8 and the platen 7, and the roll paper cover frame 25 causes the side edge of the roll paper to be It is regulated and the setting of the roll paper is completed.
During the recording operation, the roll paper is pulled out by the platen 7 and the image is recorded by the thermal head 8. The roll paper is conveyed toward the paper outlet 16 by the platen 7, and when the portion on which the image is recorded is carried out from the paper outlet 16, the auto cutter unit 9 operates to cut the roll paper.

As shown in FIG. 3, a main substrate (first substrate) 10 is disposed vertically between the front substrate cover 12 and the rear substrate cover 13. The main board 10 is electromagnetically shielded by the front board cover 12 and the rear board cover 13 and is fixed to the rear board cover 13. The main board 10 is a control board that controls the entire thermal printer 100. Specifically, the main board 10 drives a transport motor (not shown) to rotate the platen 7, and the thermal head 8 is based on predetermined print data. The heat generating element (not shown) included in is heated to perform recording control on the roll paper.
A flat cable connector 10f is provided on the upper portion of the main board 10, and a flat cable 15 connected to the thermal head 8 is inserted into the flat cable connector 10f, and the thermal head 8 is connected via the flat cable 15. A heating element (not shown) is controlled by a control circuit mounted on the main board 10.

FIG. 4 is a perspective view showing a main part of the recording mechanism unit 20.
As shown in FIG. 4, the front substrate cover 12, the rear substrate cover 13, and the lower portion of the main substrate 10 all pass through a base frame opening 24 a provided in the base frame 24 to serve as a substrate support portion. The bottom plate 29 is extended to the vicinity. The rear substrate cover 13 is provided with a rear substrate cover opening 13a at a position below the base frame 24, and the main substrate 10 has a substrate connector as a slot at the same height as the rear substrate cover opening 13a. 10i is disposed.

An interface board 11 as a second board is connected to the board connector 10i. The board connector 10i is a board-to-board connector, and the interface circuit mounted on the interface board 11 and the circuit on the main board 10 are connected by inserting a terminal portion formed at the tip of the interface board 11 into the board connector 10i. Is done. The interface circuit of the interface board 11 is a circuit for connecting the thermal printer 100 to various devices such as a computer and a cash drawer, and includes a memory for storing information input to the thermal printer 100 from these various devices. It is. An external connector 31 disposed at the rear end (non-connection side end) of the interface board 11 is connected to the interface circuit.
The rear end of the interface board 11 passes through the rear board cover opening 13 a and extends to substantially the center of the thermal printer 100.

FIG. 5 is a perspective view of the thermal printer 100 as seen from the bottom.
The bottom plate 29 constituting the bottom surface of the thermal printer 100 is bent upward (at the base frame 24 side) at a substantially right angle in the front-rear direction center of the thermal printer 100 to form a rear end surface 29a, and a bottom plate opening ( (Not shown) is provided. The rear end of the interface board 11 reaches a position protruding from a bottom plate opening (not shown) of the bottom plate 29 and is covered with an interface board cover 30 as a board support portion attached to the rear end surface 29a of the bottom plate 29. The interface board cover 30 is formed in a substantially box shape with an open front end surface, and an opening is provided in the rear end face, and the external connector 31 of the interface board 11 is exposed from this hole. Screw holes (not shown) are formed on both sides of the external connector 31, and bolts 30 a are tightened into the screw holes with the rear end face of the interface board cover 30 interposed therebetween. Thereby, the interface board cover 30 and the interface board 11 are fixed.
Further, the interface board cover 30 is formed with a flange 30b projecting in the width direction, and the flange 30b is screwed to the rear end surface 29a of the bottom plate 29 by a sealing screw 32 (sealing screw, wire sealing screw). The Further, a screw (not shown) for fixing the bottom plate 29 to the base frame 24 is disposed between the interface board cover 30 and the base frame 24. This screw (not shown) is in a position hidden behind the interface board cover 30 and cannot be attached or detached unless the interface board cover 30 is removed from the bottom plate 29.
Therefore, the interface board cover 30 is indirectly fixed to the base frame 24 via the bottom plate 29, and the interface board cover 30 cannot be removed from the thermal printer 100 unless the sealing screw 32 is removed. It is also impossible to take it out.

FIG. 6 is a perspective view showing the configuration of the sealing screw 32.
The tip of the sealing screw 32 is a tip portion 32f formed with a screw thread, and a sleeve 32b for turning the sealing screw 32 by a tool such as a screwdriver is formed on the screw head 32a. And between the screw head 32a and the front-end | tip part 32f, it is the shaft part 32c of the size cylinder, The wire through-holes 32d and 32e are drilled in this shaft part 32c.
The wire through holes 32d and 32e are holes that penetrate the side surface of the shaft portion 32c along the diametrical direction. The wire through hole 32d and the wire through hole 32e extend in different directions, and the orthogonal projections in which the wire through holes 32d and 32e are projected on a plane perpendicular to the axis of the sealing screw 32 do not overlap. Here, it is preferable if the orthogonal projection is substantially perpendicular. Further, the wire through hole 32d and the wire through hole 32e are formed at different positions along the axial direction of the sealing screw 32 so as not to cross each other.

  Then, as shown in FIG. 5, the wire 33 is bridged between the two sealing screws 32 in a state where the flange 30 b of the interface board cover 30 is fixed by the sealing screws 32. In each sealing screw 32, the wire 33 passes through one of the wire through holes 32d and 32e (FIG. 6). And the sealing tool 34 is attached to the both ends of the wire 33 in the state in which the both ends of the wire 33 were bundled together and the ring | wheel of the wire 33 was formed. The sealing tool 34 is made of metal, synthetic resin, or paper, and holds the wire 33 in a bundled state. For example, the sealing tool 34 has a shape in which the wire 33 is sandwiched between two plates. The sealing device 34 has an irreversible sealing structure, that is, a structure that cannot be removed once the wires 33 are bundled, and is easily damaged by a relatively small force and cannot be repaired at the time of the damage. Or repair is extremely difficult.

  As described above, the interface board 11 included in the thermal printer 100 is covered with the bottom plate 29 and the interface board cover 30 and is fixed to the interface board cover 30 via the external connector 31. In order to take out the interface board 11, the interface board cover 30 is removed and the interface board 11 is pulled out from the board connector 10i. However, a wire 33 is hung on a sealing screw 32 that fixes the interface board cover 30 to the bottom plate 29, and both ends of the wire 33 are bundled and sealed by a sealing tool 34. The sealing tool 34 has a structure that cannot be removed. If the sealing tool 34 is forcibly removed, the sealing tool 34 is relatively easily damaged and cannot be repaired. For this reason, when the sealing screw 32 is forcibly turned to take out the interface board 11, the wire 33 or the sealing tool 34 is damaged and cannot be repaired. Therefore, it is impossible to take out the interface board 11 without leaving any trace from the thermal printer 100 sealed with the sealing tool 34.

When the thermal printer 100 is sealed by the sealing tool 34, the wire 33 is placed around the sealing screw 32 and sealed by the sealing tool 34. When the wire 33 is passed over the sealing screw 32, it is necessary to pass the wire 33 through one of the wire through holes 32d and 32e formed in the sealing screw 32. However, the wire through holes 32d and 32e are parallel to each other. Therefore, either one is opened at a position where the wire 33 can be easily passed. Accordingly, it is very easy to pass the wire 33 through the wire through holes 32d and 33e.
Further, since the wire through holes 32d and 32e do not intersect with each other, the inner peripheral surface thereof is smooth without burrs and the like so that the wire 33 can be smoothly passed through and the wire 33 is not damaged.

  In addition, in this 1st Embodiment, although it was set as the structure which spans the wire 33 to the two sealing screws 32, it is also possible to seal the sealing screw 32 with the one wire 33, for example. . In this case, a ring stronger than the wire 33 is provided in the vicinity of the place where the sealing screw 32 is disposed, for example, the rear end surface 29a of the bottom plate 29, the side surface of the interface board cover 30, and the like. The wire 33 may be passed through the wire passage hole 32d or the wire passage hole 32e, and both ends of the wire 33 may be bundled and sealed by the sealing tool 34. In this case, the two sealing screws 32 can be sealed independently.

[Second Embodiment]
FIG. 7 is a perspective view showing the configuration of the sealing screw 32 in the second embodiment to which the present invention is applied, and FIG. 8 is an exploded perspective view.
In the second embodiment, a case where a cap 35 is put on the sealing screw 32 and sealed with a wire 33 and a sealing tool 34 is shown. As shown in FIGS. 7 and 8, the cap 35 has a cylindrical shape with one end opened, and covers the screw head 32 a and the shaft portion 32 c of the sealing screw 32 in a state of being covered with the sealing screw 32. At least two, preferably four or more wire through holes 35a (through holes) are formed in the side surface of the cap 35. Here, the positions of the wire through holes 35a are positions corresponding to the four openings of the wire through holes 32d and 32e of the sealing screw 32.

  The sealing method when the cap 35 is used is as follows. With the interface board cover 30 (board support part) fixed to the rear end surface 29a (fixing part) of the bottom plate 29 by the sealing screw 32 (wire sealing screw), the sealing screw 32 is covered with the cap 35. Then, while rotating the cap 35, the wire through hole 35 a of the cap 35 and the wire through hole 32 d or the wire through hole 32 e of the sealing screw 32 are aligned to pass the wire 33, and both ends of the wire 33 are bundled, A seal 34 is attached. 7 shows an example in which one sealing screw 32 is sealed by one wire 33. However, when the interface board cover 30 is fixed by a plurality of sealing screws 32, the plurality of sealing screws 32 are straddled. Thus, the wire 33 may be bridged and sealed with the sealing tool 34.

  In this way, when the sealing screw 32 is covered with the cap 35 for sealing, the sleeve 32b of the screw head 32a is not exposed. Therefore, the sealing screw 32 cannot be turned and removed, and reliable sealing is possible. In addition, since one sealing screw 32 can be sealed with one wire 33 without providing a ring or the like around the sealing screw 32, a plurality of places can be used regardless of the place where the sealing screw 32 is disposed. It is possible to seal the sealing screws 32 independently, or to seal the thermal printer 100 by using only one sealing screw 32.

[Third Embodiment]
FIG. 9 is an exploded perspective view showing the configuration of the sealing portion in the third embodiment to which the present invention is applied.
In the third embodiment, a case where only the external connector 31 of the interface board 11 is exposed from the hole provided in the rear end surface 29a of the bottom plate 29 without using the interface board cover 30 will be described. Here, the hole of the rear end face 29a is configured to be smaller than the width of the interface board 11, and the portion of the interface board 11 excluding the external connector 31 is not exposed.
In the third embodiment, the rear end of the bottom plate 29 (substrate support part) is formed in a plane that overlaps the back surface (fixing part) of the base frame 24, and this plane and the base frame 24 are connected and fixed to each other, and the sealing part Sealed by 40.

A screw hole 42 is formed in the bottom plate 29 at a portion where the bottom plate 29 and the base frame 24 overlap, and a screw receiver (not shown) is formed in the base frame 24 below the screw hole 42. The sealing portion 40 disposed on the screw hole 42 includes a pedestal 43 that rests on the bottom plate 29 that overlaps the back surface of the base frame 24, and a screw 44 that fastens the pedestal 43 together with the bottom plate 29 and the base frame 24 ( A wire sealing screw) and a cap 45 covering the screw 44.
The pedestal 43 is a cylindrical member having a circular side wall, and an upper surface is opened, and a screw hole through which the screw 44 is passed is formed on the bottom surface. The side wall of the pedestal 43 has a height that can completely accommodate the screw head of the screw 44, and a recessed portion 43 a and a wire through hole 43 b are formed at the upper end thereof. Further, a rotation-preventing protrusion 41 is formed on the surface of the bottom plate 29 that contacts the pedestal 43, and a recess (not shown) is formed on the back surface of the pedestal 43 corresponding to the rotation-preventing protrusion 41. Since the rotation-preventing projection 41 is fitted into the recess (not shown), the base 43 and the bottom plate 29 do not slip, so that it is possible to prevent the base 43 from spinning around when the screw 44 is tightened as will be described later.

The screw 44 passes through screw holes formed in the base 43 and the bottom plate 29 and is fastened to a screw receiver of the base frame 24.
The cap 45 is a substantially disk-shaped member that fits inside the side wall of the pedestal 43, and includes a protrusion 45 a that protrudes laterally. The protrusion 45 a is fitted into a recess 43 a formed at the upper end of the side wall of the pedestal 43. Further, the cap 45 is formed with a wire through hole 45b that opens to the side end surface and penetrates the inside in the radial direction. The open end of the wire through hole 45 b communicates with the wire through hole 43 b of the pedestal 43 with the cap 45 fitted to the pedestal 43.

  In this way, the bottom plate 29 and the base 43 are overlapped with the base frame 24 and the screws 44 are tightened, whereby the bottom plate 29 and the base frame 24 are connected and fixed, and the cap 45 is placed on the base 43 and the wire 33 is attached to the wire. By inserting the through hole 43b and the wire through hole 45b, the screw 44 cannot be removed. When the wire 33 is sealed by the sealing tool 34, the bottom plate 29 is sealed so as not to be detached, and the interface board 11 cannot be taken out.

As mentioned above, although this invention was demonstrated based on the 1st-3rd embodiment, this invention is not limited to this. For example, in the above configuration, the shaft portion 32c of the sealing screw 32 is configured to have two through holes, ie, wire through holes 32d and 32e, but three or more through holes are provided in the shaft portion 32c. Also good. In this case, it is desirable that the three or more through holes extend in different directions and do not cross each other. In the above configuration, the shaft 32c of the sealing screw 32 and the screw head 32a have substantially the same diameter. However, the present invention is not limited to this. For example, the screw head 32a has a larger size. Alternatively, a tapered shaft portion (a portion where no thread is formed) may be provided between the shaft portion 32c and the tip portion 32f, and the length of the shaft portion 32c is not particularly limited.
In the above configuration, the interface board cover 30 is fixed by two sealing screws 32, and one wire 33 is bridged between the two sealing screws 32. However, the present invention is not limited to this. For example, the interface board cover 30 may be fixed by three or more sealing screws 32. In this case, each sealing screw 32 may be sealed by one wire 33 or all of them. The sealing screw 32 may be sealed with a single wire 33. Further, only one of the screws for fixing the interface board cover 30 may be a sealing screw 32, and the other may be a normal screw. In this case, the sealing screw 32 is sealed through one wire 33. do it. Further, in the above configuration, the end portions of the wires 33 are bundled and sealed by the sealing tool 34. For example, both ends of the wires 33 are sealed with a piece of sealing paper, the bottom plate 29, the interface board cover 30, and the base frame 24. Alternatively, it may be affixed to each part of the main case 1, and a ring may be provided in each part and the wire 33 may be bridged over the ring. In the third embodiment, sealing paper or the like may be pasted across the cap 45 and the base 43. Also in this case, since the repair after opening is extremely difficult, the function as a seal is sufficiently fulfilled.
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 a front perspective view of a thermal printer according to a first embodiment. It is a perspective view of a recording mechanism part. It is a sectional view of a thermal printer. It is a back perspective view near a substrate. It is a bottom perspective view of a thermal printer. It is a perspective view of a sealing screw. It is a perspective view which shows the structure of the sealing screw in 2nd Embodiment. It is a disassembled perspective view which shows the structure of a sealing screw. It is a disassembled perspective view of the sealing part in 3rd Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Main case, 7 ... Platen, 8 ... Thermal head, 10 ... Main board (1st board), 10i ... Board connector (slot), 11 ... Interface board (2nd board), 12 ... Front board cover, DESCRIPTION OF SYMBOLS 13 ... Rear board cover, 16 ... Paper exit, 20 ... Recording mechanism part, 24 ... Base frame (fixed part), 29 ... Bottom plate (board | substrate support part), 29a ... Rear end surface (fixed part), 30 ... Interface board cover ( Board support part), 30a ... bolt, 30b ... flange, 31 ... external connector, 32 ... sealing screw (sealing screw, wire sealing screw), 32a ... screw head, 32c ... shaft part, 32d, 32e ... wire through hole , 32f ... tip part, 33 ... wire, 34 ... sealing tool, 35 ... cap, 35a ... wire through hole (through hole), 40 ... sealing part, 41 ... anti-rotation projection, 42 ... screw , 43 ... base, 43a ... concave portion, 43 b ... wire insertion hole, 44 ... screw (wire seal screw), 45 ... cap, 45a ... projection, 45b ... wire insertion hole, 100 ... thermal printer (recording apparatus).

Claims (6)

  A sealing screw comprising a plurality of wire through holes penetrating radially through a shaft portion of the screw, wherein the plurality of wire through holes penetrate in different directions and do not intersect with each other.   A base frame on which the recording mechanism unit is placed, a first substrate erected substantially perpendicular to the base frame, and a second substrate inserted and connected to a slot of the first substrate, The non-connection side end portion of the second substrate is supported by the substrate support portion, the substrate support portion is fixed to the fixing portion by the wire sealing screw, and the wire sealing screw penetrates in different directions, and It has a plurality of wire through holes that do not intersect and penetrate the shaft part of the screw in the radial direction, and inserts the wire into one of the wire through holes and the through hole formed in the other part, and seals both ends of this wire A recording apparatus characterized by being sealed.   The recording apparatus according to claim 2, wherein the through hole formed in the other part is a wire through hole of another wire sealing screw.   A base frame on which the recording mechanism unit is placed, a first substrate erected substantially perpendicular to the base frame, and a second substrate inserted and connected to a slot of the first substrate, The non-connecting side end of the second substrate is supported by the substrate supporting portion, and this substrate supporting portion is fixed to the fixing portion by a wire sealing screw. The wire sealing screw has a shaft portion in the radial direction A wire through hole is provided, and a cap is placed to cover the head of the screw, and the end of the wire that is inserted through the cap through hole and the wire through hole of the cap is sealed with a sealing tool. A recording apparatus.   A base frame on which the recording mechanism unit is placed, a first substrate erected substantially perpendicular to the base frame, and a second substrate inserted and connected to a slot of the first substrate, A non-connection side end portion of the second substrate is supported by a substrate support portion, and the substrate support portion is fixed to a fixing portion by a sealing means, and the sealing means is a wire sealing screw for screwing the substrate support portion. And a base that is fastened together with the substrate support portion by the wire sealing screw, and a cap that fits inside the base, and a wire through hole that communicates with each other is formed in the base and the cap, A recording apparatus, wherein both ends of a wire inserted through the wire through hole are sealed with a sealing tool.   A base frame on which the recording mechanism unit is placed, a first substrate erected substantially perpendicular to the base frame, and a second substrate inserted and connected to a slot of the first substrate, A non-connecting side end of the second substrate is supported by a substrate supporting portion, the substrate supporting portion is fixed to the fixing portion so that the second substrate cannot be pulled out, and the substrate supporting portion is sealed by the sealing means so as not to be detached. A sealing method for a recording apparatus.

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