JP2003208836A - Switch mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switch mounting structure preventing a switch such as a tact switch from being broken even if excessive pushing force is applied to an operation button which is provided on a printer or the like and is shared with a taxi meter. <P>SOLUTION: The switch 110, a spacer 90 which is provided with an accommodating portion 92II for housing the switch 110, and the operation button 81 which presses the switch 110 are provided, and a stopper 95I which causes the operation button 81 to stop pressing is formed on the spacer 90. The operation button 81 is mounted on a case 10, the switch 110 is mounted on a substrate 100 situated at the back of the operation button 81 and fixed into the case 10, and the switch 110 is attached at the front of the substrate 100 so as to correspond to the mounting position of the operation button 81 with respect to the case 10. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to, for example, a printer used together with a taximeter, and even if an excessive pressing force is applied to an operation button provided in the printer or the like, a tact switch. The present invention relates to a switch mounting structure that prevents the switch from being damaged.

[0002]

2. Description of the Related Art FIGS. 9 to 11 show an embodiment of a conventional switch mounting structure. The printer 501 shown in FIGS. 12 and 13 is used as a taxi printer 501 for printing a date and a fee on a receipt, a so-called taxi printer 501. The printer 501 includes a printer body 502 and a cover 520 assembled to the printer body 502. The roll paper R501 shown in FIGS. 12 and 14 is a cutter 5 provided in the printer 501.
70 (FIG. 11 and FIG. 12 (b)) is used and the cut paper piece is used as a receipt.

As shown in FIGS. 12 and 13, the printer body 502 includes a front case 514, an inner case 516,
A case 510 including a back case 518, and a roll paper R501 (see FIGS. 12 and 1) inside the case 510.
4) an opening 503 (FIG. 13) for loading the roll paper, a roll paper accommodation unit 504 in which the roll paper R501 inserted through the opening 503 is mounted, and a roll shaft 533, a so-called mandrel 533 (FIG. 12). Holding unit 530 that supports the roll paper R501, an optical sensor 540 that detects that the roll paper R501 has been used up and the roll paper R501 is gone, and a printing unit 50 that prints on the roll paper R501.
5, a sheet take-out section 506 (FIG. 11 and FIG. 12 (b)) provided with a cutter 570 for cutting off the roll sheet R501, and each instruction is given to the printer 501 by pressing the operation button. Operation unit 580 to be operated
(FIGS. 9 to 13) and various electronic parts (not shown) for controlling each operation of the printer 501 are attached,
In addition, the printed circuit board includes a so-called main board 650 (FIG. 11) on which many circuit conductors (not shown) for electrically connecting various electronic components are arranged.

Further, as shown in FIG. 12 (a), rubber O-rings 535 are fitted in grooves provided at both ends of the mandrel 533. The “crushing allowance” of the pair of rubber O-rings 535 provided on the mandrel 533 is crushed, so that the rubber O-ring 535 exerts a tense force, and the inner case 516 installed inside the printer main body 502. Holding part 53
0, the end of the mandrel 533 with the rubber O-ring 535 is incorporated. In this way, the mandrel 533 that supports the roll paper R501 is assembled to the printer body 502.

As shown in FIGS. 12 (b) and 13 (b), the printing unit 505 provided in the printer body 502 is
The print head 560 and a roller 550 that presses a print sheet onto the print head 560 are provided. 12
As shown in FIG. 11, the roller 550 and the print head 560 shown in FIGS.
It is installed in the printer unit 507 installed inside.

The printer unit 507 includes a sheet metal frame 660, a roller 550, and the print head 5.
60, a small motor 690 for driving the roller,
A lever 665 which is rotated around the shaft portion 665a when the cover 520 is opened and closed, and a link lever 680 which is rotated around a support shaft 678 when the lever 665 is rotated.
And a switch 681 that operates in accordance with the rotation of the link lever 680. The frame means a fixed portion for holding a moving machine, a skeleton, or an underframe.

Further, the operation unit 580 of the printer body 502
In addition, each push button such as the issue button 581 is provided. As shown in FIGS. 9 to 11, the substrate 6 having the tact switch 610 for giving each operation instruction to the printer 501 inside the operation unit 580 provided in the printer body 502.
00 A so-called switch board 600 is mounted.

In addition to the tact switch 610, the switch substrate 600 is provided with an illumination lamp 620 that illuminates each push button such as the issue button 581 by applying light. Illumination means decorating with many lights.

The switch substrate 600 is a printed circuit board on which a large number of circuit conductors (not shown) for connecting the tact switch 610, the illumination lamp 620 and the like to each other in a conductive manner are arranged. The circuit conductor includes a ground line (not shown) for discharging static electricity.

In the front case 514, each push button such as the issue button 581, each spring so-called "spring member" 578 mounted between each push button and the switch substrate 600, and the cutter 570 are provided on the switch substrate. 60
By being assembled with 0, the operation unit 580 is configured.

Then, the lead wire 609a is used between the metal cutter 570 and the ground line (not shown) provided on the switch substrate 600 to perform "soldering", The metal cutter 570
And a ground line (not shown) of the switch substrate 600 are electrically connected to each other.

Further, a lead wire 609b is used between the metal frame 660 forming the printer unit 507 and the ground line (not shown) provided on the switch substrate 600, so that "soldering" can be performed. As a result, the metal frame 660 forming the printer unit 507 and the ground line (not shown) of the switch substrate 600 are electrically connected to each other.

As shown in FIG. 13 (b), the main body 524 forming the cover 520 has a front wall 524b and a pair of side walls 524a (FIG. 12 (a)) formed on both sides of the front wall 524b. Is. On the front wall 524b of the cover 520,
A substantially curved arc portion 524c is formed corresponding to the main body R502 (FIG. 12) of the roll paper R501.

A space surrounded by the circular arc portion 524c of the front wall 524b and a pair of side walls 524a provided around the circular arc portion 524c serves as a roll paper accommodating portion 525 on the cover 520 side. Further, a pair of arms 523 is formed to extend from a side wall 524a of the main body 524 forming the cover 520, and a columnar support shaft 521 is projectingly provided at the tip of this arm 523. An arm means an arm.

As shown in FIG. 13, the cover 5 is inserted into the cylindrical shaft holes 511 of the pair of side walls 516a forming the inner case 516.
The columnar support shaft 52 of the pair of arms 523 protruding from the
1 is fitted and the cover 520 including the pair of arms 523 is assembled to the inner case 516 incorporated in the printer body 502. At that time, the pair of arms 523 projectingly provided on the cover 520 are largely bent inward with respect to each other.

The roll paper R501 shown in FIG.
12A, the mandrel 533 such as the roll shaft 533 shown in FIG. 12A is inserted into the hollow hole R503 of the main body R502, and the main body R502 of the roll paper R501 is rolled from the opening 503 of the printer main body 502 shown in FIG. Paper container 50
4 and roll paper R5 on the printer body 502.
01 is attached.

As shown in FIG. 14, this roll paper R501 is
By rolling the paper continuously in a cylindrical shape so that the inner surface R505 of the long sheet is superposed on the outer surface R504 of the single long sheet, the roll paper R501 is formed. The main body R502 of the above is formed.
In this way, the main body R502 of the roll paper R501 is
It is formed as a cylinder having a hollow hole R503.
The roll paper R501 is formed such that the chemical surface for printing is the outer surface R504.

The roll paper R501 is the printer 501.
Now, the process of attaching to the printer and setting the printable state will be described. As shown in FIG. 12, roll paper R50
1 is shown in FIG. 12 (b) after its main body R502 is attached to the inner case 516 by the mandrel 533.
The main body R502 of the roll paper R501 is rotated in the same direction as the rotation direction of the clock hands, that is, in the clockwise direction, and the leading end R506 (FIG. 14) of the roll paper R501 is pulled out toward the base wall 516b side of the inner case 516. It

Next, as shown in FIG. 12 (b), roll paper R50
The outer surface R504 of No. 1 is in sliding contact with the protruding step portion 516c provided on the inner case 516, and the roll paper R501
The light sensor 540 so that the light sensor 540 is shielded from light.
Is passed in front of. Then, the inner surface R505 of the roll paper R501 is brought into contact with the outer peripheral surface 550a of the roller 550, and the outer surface R504 of the roll paper R501 is brought into contact with the print head 560, so that the roll paper R501 is printed by the printing unit 50.
5 will be passed.

In this way, the leading edge R506 of the roll paper R501 is moved along the inclined portion 524f of the front wall 524b forming the cover 520 while being sandwiched between the print head 560 and the roller 550. Roll paper R501
From the paper exit 506 of the printer 501 to the printer 5
01 is sent to the outside.

Thereafter, with respect to the printer main body 502 to which the roll paper R501 is attached, the cover 520 is pivoted downward around the support shaft 521 and the cover 520 is closed, so that the roll 520 is rolled as shown in FIG. The paper R501 is set in the printer 501 in a printable state.

In the vertical sectional view of the printer 501 shown in FIG. 12B, the roller 550 that constitutes the printing unit 505 is shown.
Is rotated clockwise while pressing the print head 560 via the roll paper R501, which causes the roller 550 to rotate.
Then, the long roll paper R501 held by the print head 560 is sent toward the paper outlet 506 of the printer 501.

Along with this, a roll paper R5 formed by continuously winding a long paper in a cylindrical shape.
The main body R502 of 01 is also rotated clockwise. That is, the rotation direction of the roller 550 and the roll paper R
The main body R502 of 501 is rotated in the same direction.

Roll paper R set in printer 501
A state in which printing is performed on 501 will be described with reference to FIGS. 9 to 12. As shown in FIG. 10, a receipt issue button 581 is pressed on the printer body 502 shown in FIGS. 9 and 11. At that time, the receipt issue button 58
1, the boss 581x that suppresses the rattling of the issuing button 581 is used as a fulcrum to resist the restoring elastic force of the "spring member" 578 that is mounted while being pressed between the issuing button 581 and the switch substrate 600. Printer body 502
Is pressed inward.

Along with this, the movable portion 618 (FIGS. 9 and 11) of the tact switch 610 disposed on the back side of the issuance button 581 so as to abut or have a slight gap by the flange 581f of the issuance button 581. However, as shown in FIG. 10, a main body 615 that constitutes the tact switch 610.
Is pressed toward inside. As a result, electrical contact is made in the tact switch 610, an electric signal is sent from the tact switch 610, and the signal is processed in each electric circuit. Then, the printer 501
A small motor 690 (FIG. 11) installed in the vehicle is driven to rotate the roller 550 shown in FIGS. 11 and 12 (b).

The roll paper R501 is pressed against the print head 560 by the roller 550 constituting the printing unit 505, and the print head 560 is rotated while the roller 550 is rotated.
The outer surface R504 of the roll paper R501 is printed by the roll paper R501 and the roll paper R501 is rotated by the rotation of the roller 550.
The sheet 501 is sent to the outside of the printer 501 from the sheet outlet 506 of the printer 501.

Then, the paper ejection port 50 of the printer 501
The long roll paper R501 sent out from the printer 501 to the outside of the printer 501 is the blade 5 of the cutter 570 as shown in FIG.
A piece of paper, that is, a receipt, is obtained by being abutted against 71 and cut off. In this way, the taxi printer 5
A receipt will be issued from 01.

[0028]

However, in the conventional switch mounting structure or the taxi printer 501 including the switch mounting structure, the operation buttons such as the issue button 581 shown in FIGS. 9 and 11 are pressed. Then, the printer 501 (FIG. 11, FIG. 12 (b)) issues an operation instruction such as issuing a receipt on which the fare is printed.
Issue button 581 when given to the printer 501
When an excessive pressing force F is applied to the operation button such as (FIG. 10) and the operation button is pressed, such an excessive pressing force F is transmitted to the flange 581f of the operation button such as the issue button 581. Together with the tact switch 61
0 through the movable part 618, the tact switch 6
10 was transmitted to the main body 615, and from this fact, it was feared that an excessive force would be applied to the tact switch 610 and the tact switch 610 would be damaged.

More specifically, the tact switch 610 provided in the printer main body 502 can withstand a pressing force of the movable portion 618 of the tact switch 610 against the main body 615 of 0.3 N or less. In the case where the tactile switch 610 having such a specification is inadvertently applied with an excessively large pressing force F on an operation button such as the issue button 581, for example, an excessively large pressing force of 1N is applied to the tactile switch 610. , Of course,
The tact switch 610 will be damaged.

In view of the above points, the present invention has a switch mounting structure for preventing damage to a tactile switch or the like even if an excessive pressing force is applied to an operation button provided in a printer or the like. The purpose is to provide.

[0031]

In order to achieve the above object, a switch mounting structure according to claim 1 of the present invention comprises a switch, a spacer provided with an accommodating portion for accommodating the switch, and An operation button for pressing the switch is provided, and a stopper portion for stopping pressing of the operation button is formed on the spacer. With the above configuration, since the spacer having the accommodating portion for accommodating the switch is provided with the stopper portion for stopping the pressing of the operation button even when an excessive pressing force is applied to the operation button. The stopper portion limits the pressing force applied to the switch. Therefore, the switch housed in the accommodating portion of the spacer is protected from the excessive pressing force applied to the operation button, which causes the switch to be damaged by the excessive pressing force applied to the operation button. The occurrence of will be prevented in advance.

According to a second aspect of the present invention, there is provided a switch mounting structure according to the first aspect, wherein the stopper portion is provided on the front surface of the spacer from a front surface of the spacer toward a rear surface of the operation button. It is characterized in that it is formed as a protrusion. With the above configuration, since the stopper portion for stopping the pressing of the operation button is formed on the front surface of the spacer as a protrusion, the spacer is not increased in size more than necessary, and the spacer provided with the protrusion is The size is the size of the spacer without the protrusion,
The size is almost the same. Therefore, by forming the stopper portion on the spacer, it is possible to avoid the need for a large design change, and it is possible to easily form the protrusion on the spacer for stopping the pressing of the operation button. .

According to a third aspect of the present invention, there is provided the switch mounting structure according to the first or second aspect, wherein a pair of the stopper portions are formed on the spacer in correspondence with one operation button. It is characterized by With the above configuration, when one operation button is pressed, the one operation button is brought into contact with the pair of stopper portions formed on the spacer corresponding thereto. Therefore,
The operation buttons are unstable, such as wobbling,
It is avoided that the pressing of the operation button is stopped by being brought into contact with the stopper portion of the spacer, and the pressing of the operation button is stopped in a stable state.

A switch mounting structure according to a fourth aspect is the switch mounting structure according to any one of the first to third aspects, in which a plurality of stopper portions are provided along a direction in which the plurality of operation buttons are arranged. It is characterized in that the spacers are provided side by side. With the above configuration, the stopper portion formed on the spacer for stopping the pressing of the operation button is provided in parallel at the preferable stop position for the pressing of the operation button.
Even if any one of the plurality of operation buttons is pressed, the stop position of the operation button does not vary. Therefore, even if any one of the plurality of operation buttons is pressed, all the operation buttons are stopped in a substantially uniform state.

According to a fifth aspect of the present invention, there is provided a switch mounting structure according to any one of the first to fourth aspects, wherein the operation button is attached to a case and is located on the rear side of the operation button. Further, the switch is attached to a substrate fixed in the case, and the switch is attached to the front side of the substrate corresponding to the attachment position of the operation button with respect to the case. With the above configuration, the switch is positioned inside the case corresponding to the mounting position of the operation button on the case. Therefore, when the operation button is pressed against the case, the switch is surely pressed along with the pressing of the operation button. Also, on the rear side of the operation button attached to the case,
Moreover, when the board is fixed in the case, the positional relationship between the switch mounted on the front side of the board and the operation button attached to the case becomes substantially the same. Therefore, the positioning of the switch with respect to the operation button can be performed easily and quickly.

A switch mounting structure according to a sixth aspect of the present invention is the switch mounting structure according to any one of the first to fifth aspects, wherein the spacer is white and the spacer illuminates the operation button with light. The feature is that it also serves as a reflector that surrounds the lighting that makes it bright. With the above structure, the light emitted from the illumination is easily reflected by the white spacer surrounding the illumination, and the light emitted from the illumination and the light reflected by the white spacer surrounding the illumination are operated by the operation button. The operation button is illuminated more brightly by being applied to.

A switch mounting structure according to a seventh aspect of the present invention is the switch mounting structure according to any one of the first to sixth aspects, wherein a cutter that cuts out a sheet, a substrate on which the switch is mounted, and the substrate. Is provided, and the cutter is provided with an elastic portion that is pressed against the operation button. The operation button, the cutter, the spacer, and the substrate are assembled in the case. By being attached, the elastic portion of the cutter pushes the operation button so as to be elastically recoverable from the inside to the outside of the case. With the above configuration, the operation button is assembled in the case in a state where it can be elastically restored while suppressing rattling. That is, the operation button, the cutter, the spacer, and the board are assembled into the case, and the board is fixed to the case, so that the elastic portion of the cutter is pressed against the operation button, whereby the operation button is The case is assembled to the case in a state where it can elastically return from the inside to the outside of the case. Therefore, the operation feeling when the operation button is pressed against the case is good.

The switch mounting structure according to claim 8 is the switch mounting structure according to any one of claims 1 to 7, which is applied to a taximeter printer. With the above configuration, even if a driver of a strong taxi inadvertently applies an excessive pressing force to the operation button, and such an excessive pressing force may be applied to the switch, the switch Will be prevented in advance.

[0039]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a switch mounting structure according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a vertical sectional view showing an embodiment of a switch mounting structure according to the present invention, FIG. 2 is a vertical sectional view showing a state in which the switch is also pressed, and FIG. 3 is an operation provided on a printer body. FIG. 4 is an exploded perspective view showing the mounting structure of the switch, and FIG.

FIG. 5 is a sectional view showing a state where the roll paper is attached to the printer body and the cover is closed to the printer body. (A) is a sectional view taken along line AA of (b), (b) is a sectional view. FIG. 3 is a vertical sectional view showing a printer body, a cover, and roll paper. 6A and 6B are sectional views showing a state in which the cover is assembled to the printer body and the cover is opened with respect to the printer body. FIG. 6A is a sectional view taken along line BB of FIG. 6B, and FIG. FIG. 3 is a vertical cross-sectional view showing a cover and a cover.

Each sectional view shows the main part inside the printer body. Further, FIG. 7 is a perspective view showing a roll paper, and FIG. 8 is an explanatory view showing a state in which a printer is attached to an instrument panel of an automobile.

Next, the switch mounting structure or each direction of the printer equipped with the switch mounting structure will be described. As shown in FIGS. 5, 6 and 8, when the cover 20 that is openably and closably attached to the printer body 2 is closed with respect to the printer body 2, the side where the cover 20 is provided on the printer body 2 is The front case is attached to the printer body 2 as the “front side”.
The side provided with (FIGS. 5 and 6) is referred to as the “rear side”. Further, as shown in FIG. 5B, the side where the main body R2 of the roll paper R1 is attached to the printer main body 2 is referred to as “upper side”, and the side where the printing unit 5 such as the print head 60 and the roller 50 is provided in the printer main body 2 Is the "lower side".

Further, as shown in FIG. 8, when the printer 1 is viewed from the front side, the front wall 14b of the front case 14 of the printer body 2 is shown.
In addition, the side provided with the round-shaped operation button 81 is referred to as “right side”, and the opposite side is referred to as “left side”. The “left-right width direction” referred to in this specification means the paper ejection unit 6 of the printer 1.
Means a direction along the horizontally long cutter 70 provided in the. In addition, "front and rear", "up and down" in this specification,
The definition of “right and left” is defined for convenience of description of each part, and does not necessarily match the direction of actual use in the printer.

The printer 1 shown in FIG. 5 and FIG.
As shown in FIG. 8, a taxi instrument panel 400
Mounted on the roll paper R1 (FIGS. 5 and 7) on which the fare indicated on the display of the taximeter 200 is printed, and the printed roll paper R1 is the blade 71 of the cutter 70.
The taxi printer 1 is used as a so-called taxi printer 1, which is cut out according to FIGS. 3 and 5 (b) and issued as a receipt.

As shown in FIGS. 5, 6 and 8, the taximeter printer 1 is provided with a printer body 2 and a cover 20 which is attached to the printer body 2 so as to be openable and closable. The cover 20 is provided in the printer 1 to prevent the roll paper R1 from being contaminated by foreign matter such as dust and dust, and from being discolored by the sun rays including ultraviolet rays and infrared rays. Is. Thus, the cover 20 is provided in the printer 1 to protect the roll paper R1,
Such a cover 20 may be called a roll cover.

As shown in FIGS. 5 and 6, the printer main body 2
Is a synthetic resin case 10 including a front case 14, an inner case 16, and a back case 18, and an opening 3 for loading the roll paper R1 (FIGS. 5 and 7) into the case 10. (FIG. 6), the roll paper storage unit 4 in which the roll paper R1 inserted from the opening 3 is mounted, the holding unit 30 that supports the roll paper R1, and the roll paper R1 is used up so that the roll paper R1 disappears. An optical sensor 40 that detects that the roll paper R1 is printed, a printing unit 5 that prints on the roll paper R1, and a paper ejection unit 6 that is provided with a cutter 70 that cuts off the roll paper R1.
(FIG. 3, FIG. 5 (b), FIG. 8) and the operation buttons 81, 82
~ 84 (Fig. 8) is pressed to give each instruction to the printer 1 and the operation unit 80 for operating the printer 1
(FIGS. 1 to 6 and 8) and various electronic components (not shown) for controlling each operation of the printer 1 are attached,
In addition, the printed circuit board is provided with a so-called main board 150 (FIG. 3) and the like, on which many circuit conductors (not shown) for electrically connecting various electronic components are arranged.

As shown in FIG. 4, a connector opening 14j is formed in the lower right portion of the front case 14, and a connector (not shown) is formed in the lower right portion of the printer body 2 (FIG. 8). The printer 1 and the taximeter 200 (FIG. 8) are fitted by fitting the connector provided on the printer 1 and the mating connector (not shown) provided on the wire harness (not shown). The other devices will be connected so that they can be energized. A ground wire of a wire harness (not shown) configured by bundling a plurality of cables is electrically connected to a metal body (not shown) or the like, whereby static electricity in the printer 1 can be quickly generated. Then, it is removed to the outside of the printer 1.

Further, as shown in FIGS. 3 and 5 (b), the printing section 5 comprises a roller 50 and a print head 60. Since the roller 50 presses the roll paper R1 toward the print head 60 and the roller 50 rotates, the print head 60 prints on the roll paper R1. It is considered to be important as a part of it. Also, FIG.
The print head 60 shown in (b) and FIG.
As described above, the printer unit 7 incorporated in the printer main body 2 is equipped.

The print head 60 mounted on the printer unit 7 is provided on a movable pressing plate 166 made of sheet metal, and the movable pressing plate 166 is pushed upward by the restoring elastic force of the pressing spring 176. Then, the movable pressing plate 16
The print head 60 provided on the roller 6 is pressed against the rubber roller 50. The movable pressing plate 166 including the print head 60 is pivotally supported by the support shaft 178 and the support shaft 1
It is moved up and down around 78.

The printer unit 7 is a sheet metal frame 1 formed by stamping and bending a metal steel plate.
Reference numeral 60 denotes the print head 60, a small motor 190 for driving the rollers, and a lever 165 made of sheet metal that is rotated around a shaft portion 165a when the cover 20 is opened and closed.
And the support shaft 178 along with the rotation of the lever 165 made of sheet metal.
Link lever 180 made of synthetic resin that rotates around
And a switch 181 that operates in accordance with the rotation of the link lever 180.

The frame 160 made of sheet metal is provided on one side plate 1.
62, the other side plate 163, and a substrate that connects the one side plate 162 and the other side plate 163. One side plate 16 that constitutes a frame 160 made of sheet metal
2, the sheet metal lever 165, the synthetic resin link lever 180, and the switch 181 are mounted. Further, the small motor 190, a gear (not shown) for transmitting the rotational driving force of the small motor 190, and the like are mounted on the other side plate 163 constituting the frame 160 made of sheet metal.

Further, the operation unit 80 of the printer body 2 is provided with operation buttons 81, 82 to 84 (FIGS. 4 and 8) such as an issue button 81. The operation button may be called a push button. As shown in FIGS. 1 to 4, a substrate 100 having a plurality of tact switches 110 for giving each operation instruction to the printer 1 is mounted inside the operation unit 80 provided in the printer body 2, a so-called switch substrate 100. .

As shown in FIGS. 1 to 4, the tact switch 1 is used.
In addition to 10, the switch substrate 100 is provided with a plurality of illuminations 120, so-called illumination lamps 120, which illuminate the operation buttons 81, 82 to 84 such as the issue button 81 by applying light. The switch board 100 is a printed board on which a large number of circuit conductors (not shown) that connect the tact switch 110, the illumination lamp 120, and the like to each other in a conductive manner are arranged. The circuit conductor includes a ground line 107 (FIG. 4) for discharging static electricity.

The printed circuit board will be briefly described.
A printed circuit board is a printed wiring board in which a plurality of circuit conductors (not shown) made of a metal foil such as a copper foil are provided on a substrate body formed of an insulating resin such as a thermosetting resin. It was formed. An insulating film is provided on the printed wiring board including the circuit conductors to prevent electrical defects such as electric leakage and short circuit.

The ground line 1 provided on the substrate body 101 which constitutes the switch substrate 100 shown in FIG.
In No. 07, the portion where the ground portion 75 of the metal cutter 70 is in contact with the ground line 107 is exposed without the insulating film being provided.

As shown in FIG. 4, the front wall 14b of the front case 14 is formed.
Each operation button 81, 82 such as the issue button 81
To 84, a spacer 90 located on the rear side of each of the operation buttons 81, 82 to 84, and each of the operation buttons 81, 82.
˜84 and the cutter 70 mounted between the spacer 90 and the “spring portion” 78, 78 _I are assembled with the switch board 100 including the tact switch 110 and the illumination lamp 120 in the board body 101. As a result, the operation unit 80 is configured as shown in FIGS.

Four operation buttons 81, 82 to 84 arranged on the front wall 14b of the front case 14 constituting the printer.
Will be described with reference to FIG. The circular operation button 81 functions as the issue button 81, and when the issue button 81 is pressed, the printer 1
Roll paper R printed with fare etc. from the paper exit 6
1 is sent.

The operation button 82 functions as the ETC button 82. "ETC" is an abbreviation for "Electronic Toll Collection System", which means a non-stop automatic toll collection system.
"ETC" was developed for the purpose of eliminating the congestion of automobiles that has been a problem at toll gates on toll roads, improving convenience by making cashless, and reducing management costs. By using "ETC",
At the tollgate, the work that causes traffic congestion such as the payment of the toll after the car is stopped is saved, and the toll of the toll road is paid by wireless communication.

The operation button 83 is used as an unpaid button, or as a blank button 83 provided for sending a signal to a device having another function to be developed in the future, a so-called spare empty button. It is something.

The operation button 84 functions as a so-called feed button of the FEED button 84, and is pressed when the roll paper R1 is replenished in the printer 1 or the like, and printing is not performed on the roll paper R1. It is used to feed the roll paper R1 from the paper exit 6 of the printer 1.

The operation buttons 81, 82 to 84 are made of a polycarbonate resin (abbreviated as PC) which is excellent in optical properties such as transparency and is also excellent in impact resistance, electric insulation, heat resistance and molding processability. It was formed by Further, the rear surface 81b of each operation button 81, 82-84
Contents (not shown) such as characters and colors displayed on the operation buttons 81, 82 to 84 are used for injection molding metal on the rear surface 81b of the operation buttons 81, 82 to 84 when the operation buttons 81, 82 to 84 are injection molded. Those formed so as to be engraved by being transferred to the mold surface, or those formed by painting in any color on the rear surface 81b of each operation button 81, 82-84 Is.

The spacer 90 located on the rear side of each of the operation buttons 81, 82 to 84 will be described. As shown in FIG. 4, the peripheral wall 90a of the spacer 90 formed in a substantially rectangular frame shape.
The spacer 90 is provided with a pair of partition walls 90b that divide the partition substantially evenly. Such a partition 90b is used as the spacer 9
By being provided at 0, the spacer 90 is formed with substantially rectangular accommodating portions 92 and 92 _I corresponding to one operation button. Further, by providing such a partition wall 90b on the spacer 90, the mechanical strength of the entire spacer 90 is improved.

Three of substantially the same shape provided on the spacer 90
The receiving portions 92 of the three operation buttons 82 have the same shape.
~ 84. On the right end side of the spacer 90
Rectangular-shaped accommodating portion 92_IAnd the extension walls 90c and 90d
The housing portion 92 thus formed _IIAnd issuance button 81
It is formed corresponding to.

With respect to the one accommodating section 92, a set of the tact switch 110 and the illumination lamp 120 mounted on the switch board 100 are both located in the one accommodating section 92.

By the light emitted from the illumination lamp 120, transparent synthetic resin operation buttons 81, 8
Display contents drawn on the rear surface 81b of 2 to 84 (not shown)
Is illuminated beautifully from the center of the operation buttons 81, 82-84 toward the front surface of the operation buttons 81, 82-84 substantially uniformly, so that the switch substrate 100 corresponds to the center of the operation buttons 82-84. The three illumination lamps 120 arranged in the above are arranged at the substantially central portion of the substantially rectangular accommodation portion 92 arranged in the spacer 90.

In order to push the operation buttons 82 to 84 with a good feeling, the three tact switches 110 correspond to the centers of the lower portions 81d of the three operation buttons 82 to 84. Body 1 of the switch board 100 so that it is located directly below
It is arranged in 01.

Front face 1 of main body 101 of switch substrate 100
In order to prevent the three tact switches 110 arranged in 01a and the spacer 90 located on the front surface 101a of the main body 101 of the switch substrate 100 from interfering with each other, the tact switch 110 having a substantially cylindrical shape is used. ,
A curved relief portion 98 is provided in a lower portion 91d of the peripheral wall 90a forming the spacer 90. The relief portion 98 having the curved shape is used as the accommodation portion 9 arranged in the spacer 90.
2 is provided so as to bulge toward the lower side.

The display content (not shown) drawn on the rear surface 81b of the issue button 81 made of a transparent synthetic resin by the light emitted from the illumination lamp 120 is changed to the front surface 81a (FIGS. 1 to 3) of the issue button 81. In order to illuminate substantially uniformly from the center of the operation button 81 toward the, the switch substrate 1 corresponding to the center of the issue button 81.
Illumination lamp 12 provided on the right end side of 00
As shown in FIGS. 1 to 4, 0 is located at the lower center of the substantially rectangular housing portion 92 _I provided on the right end side of the spacer 90.

In order to press the issue button 81 with good feeling, the tact switch 110 corresponding to the issue button 81 is provided at the center of the lower portion 81d of the flange 81f _I formed on the issue button 81. , The lower portion of the right side of the spacer 90, which is located substantially below the center of the accommodating portion 92 _II .

As shown in FIGS. 1 to 4, the operation buttons 8 are provided.
1, 82 to 84 corresponding to respective operation buttons 81, 82 to
The tact switch 110 is located on the rear side of 84. Figure 1
~ As shown in FIG. 3, the tact switch 110 includes the locking portion 1
The switch body 100 is mounted on the board body 101 of the switch board 100. By pressing the white cylindrical movable portion 118 against the cylindrical main body 115 (FIGS. 1 to 3) forming the tact switch 110 toward the inside of the cylindrical main body 115 (FIG. 2), Switch 110
Electrical contact is made in the interior, and as a result, an electric signal is sent from the tact switch 110 to various electric / electronic-related parts.

As shown in FIGS. 1, 2 and 4, the printer main body 2
A plurality of tact switches 110, a spacer 90 provided with a plurality of accommodating portions 92 and 92 _II for accommodating each tact switch 110, and a plurality of operation buttons 81, 82 to 84 for pressing each tact switch 110. The printer is provided with a switch mounting structure.
Further, with respect to the printer body 2, the operation buttons 81, 8
A plurality of stopper portions 95, 9 for stopping the pressing of 2 to 84
5 _I is formed on the spacer 90.

The spacer 90 having the plurality of stoppers 95 and 95 _I is formed against the excessive pressing force F (FIG. 2) applied to the operation buttons 81 and 82 to 84 when an operation instruction is given to the printer. , The main body 10 of the switch board 100
1. The tact switch 110 mounted on the front surface 101a side of No. 1
It functions as a stopper that protects the above. Such a spacer 90 is provided on the front surface 101 a side of the substrate body 101 that constitutes the switch substrate 100.

If such a switch mounting structure is configured in the printer, the operation buttons 81, 82 to 84 (FIGS. 4 and 8) are excessively pressed against the front case 14 constituting the printer body 2. Even when the force F is applied and an operation instruction is given to the printer, each operation button 81 is attached to the spacer 90 provided with the accommodating portions 92 and 92 _{II in} which the tact switch 110 (FIG. 4) is accommodated. , 82-8
Since a plurality of stopper portions 95, 95 _I for stopping the pressing of No. 4 are formed, these stopper portions 95, 95 _I
As a result, the pressing force applied to the tact switch 110 is limited.

That is, since the spacer 90 functions as a stopper, it is mounted on the front surface 101a side of the substrate body 101 which constitutes the switch substrate 100,
Further, the tact switches 110 housed in the housing parts 92, 92 _II of the spacer 90 are operated by the operation buttons 81, 82 to the front case 14 constituting the printer body 2.
It is protected from the excessive pressing force F applied to 84. Therefore, due to the excessive pressing force F applied to each operation button 81, 82-84, each operation button 81, 82-
It is possible to prevent the occurrence of a problem that the tact switch 110 provided corresponding to 84 is damaged.

As shown in FIGS. 1 and 4, the plurality of stopper portions 95, 95 _I are provided with operation buttons 81, 82 through the peripheral wall 90a forming the spacer 90 or the respective partition walls 90b or the front surface 91a of the extension walls 90c, 90d. Rear 81 of 84
As thin disk-shaped projections 95, 95 _I directed to b,
The front surface 91a of the spacer 90 is formed so as to project.

As described above, the printer main body 2 is manipulated.
Stopper that stops pressing the operation buttons 81, 82-84
Part 95, 95_IIs the peripheral wall 90a forming the spacer 90.
Or in front of each partition wall 90b or extension walls 90c, 90d
On the surface 91a, the protrusions 95, 95 _IIs formed as
That the spacer 90 becomes larger than necessary
Not the protrusions 95, 95_IOf the spacer 90 provided with
The size of the protrusions 95, 95_ISpace not provided
The size of the service (not shown)
It

Therefore, the spacer 90 is attached to the stopper portion 95,
By forming the 95 _I, it is possible to avoid the need for a large design change, and the protrusions 95, 95 _I for stopping the pressing of the operation buttons 81, 82-84.
Can be easily formed on the spacer 90.

As shown in FIG. 4, corresponding to the issue button 81,
An extension wall 90 forming a receiving portion 92 _II of the spacer 90
A pair of protrusions 95 _I are formed substantially in the center of the front surfaces 91 a of the c and 90 d. If such a pair of protrusions 95 _I are formed substantially in the center of the front surface 91 a of the extension walls 90 c and 90 d of the spacer 90, the front side case 14 is issued from the outside to the inside. Flange 81 that forms issue button 81 when button 81 is pressed
The lower portion 81d of the rear surface 81b of f _I corresponds to the extension wall 90c, which forms the receiving portion 92 _II of the spacer 90,
A pair of protrusions 95 provided substantially at the center of the front surface 91a of the 90d.
_I will be contacted.

Therefore, with respect to the front case 14, the issue button is
When the tongue 81 is unstable, such as wobbling,
Protrusion 95 of pacer 90_IIssuance button 81
It is avoided that the pressing of the
The issuance button 81 is pressed against the spacer 14 by pressing the spacer 90.
Pair of protrusions 95 provided on the extension walls 90c and 90d of the _I
Will ensure a stable and stable stop.
It

Further, as shown in FIGS. 4 and 8, the operation buttons 82 to 84 of the same shape, which are arranged and mounted on the front wall 14b of the front case 14, are arranged one by one as shown in FIG. Corresponding to the operation buttons 82 to 84, the lower side of the front surface 91a of the left side wall of the peripheral wall 90a forming the spacer 90 and the peripheral wall 90a are separated from each other, and the accommodating portions 9 are separated.
A pair of protrusions 95 are formed on the lower side of the front surface 91a of the pair of partition walls 90b forming part 2. That is, each operation button 8
Corresponding to Nos. 2 to 84, a pair of protrusions 95 are formed on the lower sides of the front surfaces 91a of the left and right side walls that form the accommodating portions 92 that are arranged in parallel in the spacer 90.

If such a protrusion 95 is formed on the spacer 90, the operation buttons 82 to 84 having the same shape are pressed against the front case 14 from the outside to the inside of the front case 14. At this time, the rear surface 8 of the flange 81f forming the operation buttons 82 to 84 having the same shape as described above.
The lower portion 81d of the 1b is brought into contact with the pair of protrusions 95 formed on the lower side of the front surface 91a of the spacer 90 corresponding to the operation buttons 82 to 84.

That is, the accommodating portions 92 of substantially the same shape, which are arranged in parallel on the spacer 90, corresponding to the operation buttons 82 to 84, respectively.
In the above, the pair of protrusions 95 located below the front surfaces 91a of the left and right side walls that form each of the accommodation portions 92 and the flange 8 that forms the operation buttons 82 to 84 having the same shape.
The lower part 81d of the rear face 81b of 1f will be contact | abutted.

Therefore, the operation buttons 82 to 84 are brought into contact with the protrusion 95 of the spacer 90 in an unstable state such as wobbling with respect to the front case 14, and the pressing of the operation buttons 82 to 84 is stopped. It is avoided that the operation buttons 82 to 84 are pressed against the front case 14 by the pair of protrusions 95 located on the left and right side walls of the accommodating portions 92 arranged in parallel with each other in the spacer 90. ,
It will be surely stopped in a stable state.

As shown in FIG. 4, the front side 91a of the left side wall of the peripheral wall 90a forming the spacer 90 is located below the front side 91a of the peripheral wall 90a forming the spacer 90, in the direction in which the plurality of operation buttons 82 to 84 having the same shape are arranged, that is, in the lateral width direction of the spacer 90. And a front surface 91a of a pair of partition walls 90b that divides the peripheral wall 90a to form each accommodation portion 92.
A plurality of protrusions 95 are provided in parallel on the lower side.

In this way, if a plurality of protrusions 95 are arranged in parallel on the spacer 90, each protrusion 9 for stopping the pressing of the operation buttons 82 to 84 formed on the spacer 90.
5 is arranged in parallel at a preferable stop position as described above with respect to the pressing of the operation buttons 82 to 84 having the same shape. Therefore, any one of the operation buttons 82 to 84 having the same shape is operated. Buttons 82 to 84 are the front case 14
Even if pressed from the outside to the inside of the front case 14
On the other hand, the stop positions of the operation buttons 82 to 84 do not vary.

Therefore, even if any of the operation buttons 82 to 84 having the same shape is pressed from the outside to the inside of the front case 14, each operation is performed on the front case 14. All the buttons 82 to 84 are stopped in a substantially uniform state.

As shown in FIGS. 1, 2, 4 and 8.
The operation buttons 81, 82 to 84 are attached to the front wall 14b of the front case 14 that constitutes the printer body 2. In addition, as shown in FIGS. 1, 2, and 4, each operation button 8
1, 82 to 84 rear surface 81b side, that is, each operation button 8
Switch board 1 located on the pressing direction side of 1, 82 to 84
00, each tact switch 110 is attached.
As shown in FIG. 4, the switch substrate 10 including the substrate body 101
0 is fixed in the front case 14 that constitutes the case 10 by using a stopper 199 such as a screw 199.

Further, the operation buttons are provided on the front surface 101a side of the board main body 101 constituting the switch board 100 in correspondence with the mounting positions of the operation buttons 81, 82 to 84 provided on the front wall 14b of the front case 14. Each tact switch 110 corresponding to 81, 82 to 84 is mounted.

By doing so, each tact is arranged in the front case 14 constituting the printer main body 2 in correspondence with the mounting position of each operation button 81, 82 to 84 provided on the front wall 14b of the front case 14. The switch 110 will be located. Therefore, the front case 1 that constitutes the printer body 2
4 from the outside to the inside of the operation buttons 81, 82-
When 84 is pressed, these operation buttons 81, 82
In accordance with the pressing operations of ~ 84, the movable portion 118 that constitutes the tact switch 110 is also reliably pushed toward the inside of the main body 115 that constitutes the tact switch 110 (FIGS. 1 and 2). .

As shown in FIG. 4, the operation buttons 81, 82 to 84 mounted on the front wall 14b of the front case 14 are on the rear surface 81b side and inside the front case 14 constituting the printer body 2. When the switch board 100 is fixed using the fasteners 199 such as the screws 199, the front surface 101 of the board body 101 that constitutes the switch board 100.
Each tact switch 110 mounted on the a side, each operation button 81 mounted on the front wall 14b of the front case 14,
The positional relationship with 82 to 84 is substantially the same (FIGS. 1 and 2). Therefore, the positioning work of each tact switch 110 with respect to each operation button 81, 82-84 and the work of assembling each operation button 81, 82-84 and each tact switch 110 to the front case 14 are easy and quick. Will be done.

As shown in FIG. 4, in the spacer 90, the peripheral wall 90a formed in a substantially rectangular frame shape is divided into a substantially uniform shape by a pair of partition walls 90b. _It is equipped with _I. The spacer 90 having the above-described shape shown in FIGS. 1 to 4 is a white injection molded body formed of a white synthetic resin material, and is an illumination that illuminates the operation buttons 81, 82 to 84 by shining light. It is formed so as to also serve as a reflector surrounding the lamp 120.

Examples of the white synthetic resin material include polypropylene (abbreviated as PP) and polyacetal resin (abbreviated as POM). Polypropylene resin (PP) is excellent in terms of electrical characteristics such as moldability, rigidity, heat resistance, impact strength, withstand voltage and arc resistance. Polyacetal resin (PO
M) is excellent in terms of moldability, mechanical strength, fatigue resistance, dimensional stability, electrical insulation and the like.

If the spacer 90 is formed of a white type, the front surface 10 of the main body 101 of the switch substrate 100
The light emitted from the illumination lamp 120 provided in 1a is easily reflected by the white spacer 90 surrounding the illumination lamp 120.

Therefore, the light emitted from the illumination lamp 120 and the light reflected by the white spacer 90 surrounding the illumination lamp 120 are applied to the rear surface 81b of the operation buttons 81, 82 to 84. Accordingly, the display content (not shown) drawn on the rear surface 81b of the transparent synthetic resin operation buttons 81, 82 to 84 is the same as the front surface 8 of the operation buttons 81, 82 to 84.
It will be illuminated more brightly toward 1a (FIGS. 1 to 3).

As shown in FIGS. 1 and 4, a metal cutter 70.
The bent portion 70a is provided on the upper side of the vertical portion 74, the blade portion 71 inclined by about 45 ° (FIGS. 1 to 3) is formed on the front side, and a substantially right angle is formed on the lower side of the vertical portion 74. Bent part 70
b is provided to form a horizontal portion 77.
A bent portion 70c of a substantially right angle is provided on the front side of the plurality of "spring portions" 78, 78 _I.
Are formed.

Since the cutter 70 with spring is provided with a good restoring elastic force, each "spring portion" 78, 78 as shown in FIG.
_I is formed with bent portions 78e and 78f that are slightly bent. "Cutter with spring" having such a shape 70
Is formed by punching and bending a thin stainless steel plate.

As shown in FIGS. 1 to 4, the printer 1 (FIG. 3)
The operation buttons 81, 82 to 84 (FIG. 4) for giving operation instructions to the printer 1, the roll paper R1 (FIG. 3) output from the printer 1, that is, the metal cutter 70 for cutting the paper R1, Each operation button 81, 82-84 and the front case 14 to which the metal cutter 70 is assembled are provided. And each operation button 81, 82-8
A single metal cutter 70 is provided with a plurality of “spring portions” 78, 78 _I that press the sheet 4 from the inside of the printer body 2 toward the front side so as to be elastically recoverable.

In this way, if the metal cutter 70 is formed, the paper R1 output from the printer 1
The role of a "spring member" that presses the plurality of operation buttons 81, 82 to 84 (Fig. 4) from the inside of the printer body 2 toward the front side so that the metal cutter 70 that cuts out (Fig. 3) can be elastically returned. Can be combined. As a result, like the conventional printer 501 shown in FIG. 11, the cutter 570 and the “spring member” 578 are separately prepared,
The troublesome assembling process of individually assembling these in the printer 501 is omitted.

Therefore, labor can be saved when the printer 1 shown in FIGS. 3 to 6 and 8 is assembled.
Further, when the front side case 14 is provided with a plurality of operation buttons 81 and 82 to 84, the conventional printer 501 shown in FIG. 11 has a plurality of operation buttons such as the issue button 581. “Spring member” 578 of </ RTI> was required.

On the other hand, as shown in FIGS. 1 to 4, a plurality of "spring portions" for pressing the plurality of operation buttons 81, 82 to 84 from the inside of the printer body 2 toward the front side so as to be elastically recoverable.
If 78 and 78 _I are provided in one metal cutter 70, one metal cutter 70 having such a shape is provided.
However, the assembling work is completed by being assembled to the front case 14 that constitutes the printer body 2.

As described above, when the "spring cutter" 70 having the shape shown in FIGS. 1 to 4 is used in the printer 1, the number of parts can be greatly reduced. Along with this, the price of the printer 1 provided with the metal "cutter with spring" 70 can be reduced.

As shown in FIGS. 1 to 4, a plurality of tact switches 110 for giving operation instructions to the printer 1 and the respective operation buttons 8 corresponding to the plurality of operation buttons 81, 82 to 84.
An illumination lamp 120 that illuminates 1, 82 to 84 to make it brighter is provided with a space between the switch substrate 10 and the illumination lamp 120.
0 are provided one by one (FIG. 4).

Explaining in detail, each operation button 81, 8
2 to 84, the white cylindrical movable portion 118 is pressed against the rear side of the operation buttons 81 and 82 to 84 with respect to the cylindrical main body 115 (FIGS. 1 to 3) (FIG. 2),
The tact switch 110 that sends an electric signal is provided with the locking portion 119.
Is mounted on the switch substrate 100.

Further, as shown in FIGS. 1 to 4, each operation button 8
Display contents (not shown) drawn on the rear surface 81b of the reference numerals 1, 82 to 84 are made easy to see, and the operation buttons 81, 82 to.
In order to improve the aesthetic appearance of 84, in correspondence with the operation buttons 81, 82 to 84 formed of the transparent resin material,
An illumination device such as an illumination lamp 120 having a substantially rectangular parallelepiped shape is provided behind the operation buttons 81, 82 to 84. As shown in FIGS. 1 to 3, the illumination lamp 120 includes a white base portion 121 and a light source portion 122.

As shown in FIG. 4, each of the tact switches 110 mentioned above.
And the illumination lamps 120 are the board body 101 of the switch board 100 provided inside the rear side of the front wall 14b of the front case 14 that constitutes the printer body 2.
Are also provided on the front surface 101a of the. Further, since the entire cutter 70 is formed by using a thin plate stainless steel material having excellent corrosion resistance as the metal cutter 70, the “spring portions” 78, 78 _I of the metal cutter 70 are separated from the illumination lamp 120. It is said that it also serves as a reflector that reflects the light emitted.

With this arrangement, the light emitted from the illumination lamp 120 provided on the front surface 101a of the substrate main body 101 constituting the switch substrate 100 is the "spring portion" 7 of the silver cutter 70 made of silver.
It will be diffusely reflected at 8,78 _I. Therefore, the light emitted from the illumination lamp 120 and the light diffusedly reflected by the "spring portions" 78, 78 _I of the silver-colored stainless cutter 70 are applied to the rear surface 81b of the operation buttons 81, 82-84. Become. Thereby, the display contents (not shown) drawn on the rear surface 81b of the transparent synthetic resin operation buttons 81, 82 to 84 are the operation buttons 81, 8
It will be illuminated more brightly toward the front surface 81a (FIG. 3) of 2-84.

In order to give an operation instruction to the printer 1 shown in FIGS. 3, 5, 6, and 8, operation buttons 81, 82 to the front case 14 constituting the printer main body 2 are provided.
When 84 (FIGS. 1 to 4 and 8) is pushed toward the inside of the printer body 2 (FIG. 2), the operation buttons 81 and 82 thereof are pressed.
Corresponding to .about.84, the movable portion 118 (FIGS. 1 to 4) of the tact switch 110 provided on the switch substrate 100 is also
Operation buttons 81, 82-84 flanges 81f, 81f
_It will be pushed simultaneously by the lower part 81d of _I (Fig. 2).

At this time, as shown in FIG. 4, in correspondence with the movable portion 118 of the substantially columnar tact switch 110, the "spring portion" 78 of the metal cutter 70 has a substantially semicircular curved relief. Since the portion 78d is formed, the operation buttons 82 to
The "spring portion" 78 of the metal cutter 70 on the thin plate is not interposed between the movable portion 118 of the tact switch 110 corresponding to these and 84. Also, FIG.
As shown in FIG. 4, the "spring portion" 78 _I of the metal cutter 70 on the thin plate is made so as not to be interposed between the operation button 81 and the movable portion 118 of the tact switch 110 corresponding thereto. ing.

Therefore, for example, the operation buttons 81, 82 ...
The “spring portion” 78 of the metal cutter 70 on the thin plate is sandwiched between 84 and the movable portion 118 of the tact switch 110, so that the “spring portion” 7 of the metal cutter 70 is sandwiched.
A large force is applied to 8, which causes plastic deformation of the “spring portion” 78 of the thin metal cutter 70,
Therefore, the operation buttons 81, 82 to 84 are not elastically restored from the inside of the printer body 2 to the front side, and the operation feeling is significantly reduced. , Printer body 2
It is intended to prevent the occurrence of the trouble that the elastic recovery cannot be performed at all from the inside to the front side.

Further, the operation button 8 is not interfered with by the "spring portion" 78 of the thin metal cutter 70.
1, 82 to 84 can press the movable portion 118 of the tact switch 110 smoothly, so that the mounting structure of the metal cutter for the printer with improved operation feeling,
Alternatively, it is possible to provide the printer 1 having such a structure.

As shown in FIG. 4, the three "spring parts" 78 having the same shape arranged on the cutter 70 correspond to the three operation buttons 82-84 having the same shape.
8d and curved portions 78c on both sides of the curved relief portion 78d.
Is formed to have a substantially inverted convex shape. The “spring portion” 78 _I corresponding to the issue button 81 is formed in a substantially rectangular shape.

When the operation buttons 81, 82 to 84 are pressed inward from the front side of the printer body 2 with respect to the front side case 14 constituting the printer body, the front surface 91a of the spacer 90 is made of metal. "Spring part" of the cutter 70
The lower rear surface 78b of the 8, 78 _I is brought into contact with the metal cutter 70, and the “bending” of the “spring portion” 78, 78 _I of the metal cutter 70 is restricted (FIG. 2). For this reason, as shown in FIG. 4, the shape of the spacer 90 that plays the role of a stopper is such that a plurality of "spring portions" provided on the metal cutter 70 are provided.
The shape substantially corresponds to the shape of 78, 78 _I.

As shown in FIGS. 1 to 4, the printer body 2 is provided with a metal cutter 70 used for cutting the sheet R1.
A plurality of tact switches 110 and each tact switch 11
A synthetic resin spacer 90 provided with a plurality of accommodating portions 92 and 92 _II for accommodating 0 and each tact switch 11
A plurality of operation buttons 81, 82 to 84 for pressing 0, and a switch board 100 on which each tact switch 110 is mounted.
And the front case 1 to which the switch substrate 100 is fixed
4 and the switch mounting structure is configured in the printer.

As described above, on the front side of the metal cutter 70, a plurality of "spring portions" 78, 78 _{I which} are pressed against the operation buttons 81, 82 to 84 are provided. Further, a spacer 90 made of synthetic resin is installed between the “spring parts” 78, 78 _I of the metal cutter 70 and the switch substrate 100 located on the rear side of the metal cutter 70. A plurality of fulcrums 99 are juxtaposed on the upper portion 91c and the front surface 91a.

The fulcrum 99 provided on the synthetic resin spacer 90 will be described in detail. The upper portion 9 of the peripheral wall 90a forming the spacer 90 corresponds to one operation button.
1c and a pair of columnar fulcrums 99 on the front surface 91a
Are provided so as to protrude along the left-right width direction of the upper portion 91c of the peripheral wall 90a forming the spacer 90.

The operation buttons 81, 82 to 84, the metal cutter 70, and the synthetic resin spacer 90.
By assembling the switch board 100 on which the tact switches 110 are mounted and the front case 14 that constitutes the printer body 2, the operation buttons 81, 8
The upper part 81c of the flanges 81f and 81f _I of 2 to 84,
The fulcrum 99 of the spacer 90 abuts.

At the same time, the spring parts 78, 78 _I provided on the metal cutter 70 are connected to the operation buttons 81, 82-.
By being pressed against the rear surface 81b of the printer 84, the printer main body 2
The operation buttons 81, 82 to 84 are pressed so as to be elastically recoverable from the inside to the outside of the front case 14 constituting the.

If such a switch mounting structure is configured as the operation portion 80 of the printer, the operation buttons 81, 82 to 84 can be elastically restored while suppressing rattling and the like. It will be assembled to the front wall 14b of the front case 14 that constitutes the main body 2.

That is, the operation buttons 81, 82 to 84,
The cutter 70 with a spring, the spacer 90, and the switch substrate 100 on which each tact switch 110 is mounted are assembled to the front case 14 that constitutes the printer body 2, and a stopper 199 such as a screw 199 is used. The switch board 100 is a front case 14 that constitutes the printer body 2.
By being securely fixed inside, the operation buttons 81, 82
The spring portions 78, 78 _I of the cutter 70 are pressed against the blades 84 to 84.

This will be described in detail. First, as one end 91c side of the spacer 90, each fulcrum 99 provided on the upper surface 91c of the peripheral wall 90a forming the spacer 90 and the front surface 91a, and each operation button 81, 82-84. The upper end 81c and the rear surface 81b of the flanges 81f and 81f _I of the operation buttons 81 and 82 to 84 are in contact with the one end 81c side.

[0121] At the same time, by "spring unit" 78, 78 _I of the front 78a of the metal cutter 70 (FIG. 1, FIG. 4) is pressed against the surface 81b after the operation buttons 81,82～84, metal "Spring part" of cutter 70, 78 _I
Will be elastically deformed from the front side to the rear side thereof.

In this way, the operation buttons 81, 82-84
The “spring portion” 78 of the metal cutter 70 is
The 78 _I is elastically deformed from the front side to the rear side of the 78 _I , so that the “spring portion” 78, 78 of the metal cutter 70.
_{In I} , a restoring elastic force from the rear side to the front side is generated.

Due to this restoring elastic force, the metal cutter 7
The operation buttons 81, 82 to 84 that are in contact with the "spring portion" 78, 78 _{I of} 0 are elastically recoverable from the inside to the outside of the printer body 2, and the front case that constitutes the printer body 2 14 will be attached to the front wall 14b. Therefore, the front case 14 that constitutes the printer body 2
On the other hand, the operation feeling when each of the operation buttons 81, 82 to 84 is pressed becomes good.

The operation buttons 81, 8 are provided on the front case 14.
2 to 84, a metal cutter 70, a synthetic resin spacer 90, a tact switch 110 and an illumination lamp 120 in a substrate body 101.
1 is attached to the printer main body 2 (FIGS. 1, 3, and 8) to configure the operation unit 80.
~ It will be described in detail with reference to FIG. As shown in FIG. 4, first, the operation buttons 81, 82 to 84 are attached to the front wall 1 of the front case 14.
It is attached to a predetermined position of 4b.

Next, the cutter with spring 70 is attached to the front case 1.
4 is attached to the outlet portion 14f. Outlet portion 14f of the front case 14 includes a curved step portion 14f ₁ following the front wall 14b of the front case 14 (FIGS. 1 to 3), a horizontal portion 14f ₂ (FIGS. 1-4), the cutter spring 70 Blade part 71 tilted forward
And a portion to which is abutted.

As shown in FIG. 4, when the spring-equipped cutter 70 is attached to the outlet portion 14f of the front case 14, the positioning hole 73a of the spring-equipped cutter 70 is fitted to one of the positioning protrusions 13a of the front case 14. The positioning elongated hole 73b of the spring cutter 70 is fitted into the other positioning protrusion 13b of the front case 14. Along with this, the vertical portion 74 and the horizontal portion 77 of the spring-loaded cutter 70.
Comes into contact with the guide plate 14g of the front case 14 (see FIG. 1,
3) and the forwardly tilted blade portion 71 forming the spring-loaded cutter 70 is brought into contact with the outlet portion 14f of the front case 14 so that the spring-loaded cutter 70 can be positioned easily and surely. Will be attached to the outlet portion 14f of the front case 14.

As a result, the blade 71 of the cutter with spring 70 is
Is appropriately projected from the outlet portion 14f of the front case 14, and is reliably fixed to the outlet portion 14f of the front case 14. Further, as can be seen from FIG. 4, the front case 1
The center of the fastener fixing holes 13d of the pair of fixing portions 13c provided in the outlet portion 14f of the No. 4 and the center of the pair of fastener insertion holes 73d provided in the vertical portion 74 of the spring cutter 70 are:
It will almost match. Further, between the “spring portions” 78, 78 _I provided on the cutter 70, the reinforcing guide ribs 14 projecting below the guide plate 14 g of the front case 14 are provided.
h will enter with a gap.

Next, the "spring portions" 78, 7 of the cutter 70 are
The spacer 90 that substantially corresponds to the shape of 8 _I is the front case 1
It is attached to 4. At that time, one positioning projection 93e of the spacer 90 is fitted into one positioning recess 13e of the front case 14, and the other positioning projection 93f of the spacer 90 is used for the other positioning of the front case 14. Each notch 94 fitted in the recess 13f and provided in the upper portion 91c of the peripheral wall 90a forming the spacer 90.
Reinforcing guide ribs 14h protruding below the guide plate 14g of the front case 14 are inserted in the
Since the inner bottom of each notch 94 of the spacer 90 is brought into contact with the tip of each reinforcing guide rib 14h, the spacer 90 is attached to the front case 14 while the positioning is performed easily and surely.

As a result, as can be seen from FIG. 4, the center of the fastener fixing holes 13h of the pair of protruding fixing portions 13g provided inside the front wall 14b of the front case 14 and the spacer 9 are formed.
The center of the stopper insertion hole 93h of the pair of fixing portions 93g provided in the lower portion 91d of 0 is substantially coincident with each other.

Next, the switch substrate 100 having a substantially rectangular plate shape corresponding to the front wall 14b of the front case 14 is attached to the front case 14. At that time, the switch substrate 100
The positioning hole 103a of the substrate body 101 constituting the
A board body 101 which is fitted into one of the positioning protrusions 13a of the front case 14 and constitutes the switch board 100.
The long slot 103b for positioning is fitted into the other positioning protrusion 13b of the front case 14, so that the switch board 100 can be positioned easily and surely.
It is attached to the front case 14.

As a result, as can be seen from FIG. 4, the pair of fixing portions 13 provided at the outlet portion 14f of the front case 14 are provided.
The center of the fastener fixing hole 13d of c and the switch substrate 100
The center of the pair of stopper insertion holes 103d provided on the upper side of the substrate body 101, which constitutes the above, substantially coincides with each other.
In addition, the center of the fastener fixing holes 13h of the pair of protruding fixing portions 13g provided inside the front wall 14b of the front case 14 and the pair of lower portions provided on the lower side of the substrate body 101 that constitutes the switch substrate 100. The centers of the other fastener insertion holes 103h substantially coincide with each other.

After that, the screw 199 is attached to the switch substrate 10.
The stopper insertion hole 103d located on the upper side of the substrate body 101 forming 0 passes through the stopper insertion hole 73d provided in the vertical portion 74 of the spring cutter 70, and is provided at the outlet portion 14f of the front case 14. It is screwed into the fastener fixing hole 13d of the fixing portion 13c.

Further, another screw 199 is attached to the switch substrate 1
00 from the other stopper insertion hole 103h located below the substrate body 101 through the stopper insertion hole 93h of the fixing portion 93g provided in the lower portion 91d of the spacer 90,
The protrusion fixing portion 13g provided inside the front wall 14b of the front case 14 is screwed into the fastener fixing hole 13h.

By using a stopper 199 such as a screw 199, the front surface 101a of the substrate main body 101 constituting the switch substrate 100 and the rear surface 91b of the spacer 90 are securely brought into contact with each other, and the switch substrate 100 is a front case. The operation buttons 81, 82 to 84, the metal cutter 70, the synthetic resin spacer 90, and the switch substrate 100 are assembled to the front case 14 by being securely fixed to the printer body 14. 2 (FIG. 1, FIG. 3, FIG. 8) to the operation unit 8
0 will be configured.

The grounding protrusion 76 of the "spring cutter" 70 after assembly passes through the notch 106 provided at the substantially upper left end of the switch substrate 100 correspondingly, and as shown in FIGS. 1 and 3. , The grounding protrusion 7 of the spring-loaded cutter 70
The vertical tip portion 76c of 6 is located on the rear side of the rear surface 101b of the substrate body 101 that constitutes the switch substrate 100.

Further, as shown in FIG. 4, a plurality of cylindrical fixing portions 13 provided at the inner corners of the front wall 14b of the front case 14 are provided.
Corresponding to j, a pair of escape portions 103j are provided at the lower corners of the substrate main body 101 that constitutes the switch substrate 100. As shown in FIGS. 5 and 6, the plurality of cylindrical fixing portions 13j having the fastener fixing holes 13k shown in FIG. 4 are assembled when the printer case 2 is assembled by attaching the back case 18 to the front case 14. Is used for.

The “screws” 199 shown in FIG. 4 are the fixing parts 13 provided on the front case 14 made of synthetic resin.
c, 13g, 13j fastener fixing holes 13d, 13h, 1
It is screwed into 3k, and at that time, fastener fixing holes 13d, 1
By forming 3h and 13k as female screw holes,
Fastening with "screw" 199 is performed. In addition, each of the fixing portions 13c provided on the front side case 14,
13g, 13j fastener fixing holes 13d, 13h, 13k
May be preliminarily formed as a female screw hole before fastening with a screw.

As shown in FIG. 1 to FIG. 4, a metal printer cutter 70 for cutting off the roll paper R1 output from the printer 1, that is, the paper R1, is provided with a ground portion 75 for removing the static electricity of the paper R1. A conductor 107 (FIG. 4),
It is provided so as to be directly contacted. In this way, the static electricity on the paper R1 shown in FIG.
1 is quickly removed through the metal printer cutter 70 that is in contact with the first printer 1 and the mating conductor 107 (FIG. 4) that is electrically contactable with the metal printer cutter 70. Become.

Moreover, it is possible to omit the grounding lead wire 609a provided in the conventional printer 501 shown in FIG. Conventional printer 5
In 01, the paper R output from the printer 501
Although the grounding lead wire 609a was required to remove the static electricity of 501, such a grounding lead wire 609a can be omitted. As a result, the number of parts can be reduced, and at the same time, the price of the printer 1 including the metal printer cutter 70 shown in FIGS. 5, 6, and 8 can be reduced. Becomes

As shown in FIGS. 1 to 4, the metal printer cutter 70 and the substrate 100 provided with the tact switch 110 for giving each operation instruction to the printer 1, that is, the switch substrate 100, are the printer main body 2 Is attached to the front case 14 that constitutes the. Further, as shown in FIG. 4, the switch conductor 100 is used as the mating conductor 107.
The ground line 107 that constitutes the circuit conductor is used. Then, as shown in FIGS. 1 to 3, in the ground portion 75 of the metallic printer cutter 70, the switch substrate 1
00, the ground line 107 (FIG. 4) provided on the front surface 101a of the substrate body 101, which is connected to the circuit board 00, is electrically contactable.

In this way, the metal printer cutter 7 is used.
0 and the ground line 107 of the switch substrate 100 are in direct contact with each other so that they can be energized. Therefore, the static electricity of the paper R1 shown in FIG. 3 is switched via the metallic cutter 70 for the printer. It escapes to the ground line 107 (FIG. 4) of the substrate 100.

Therefore, as in the conventional printer 501 shown in FIG. 11, the cutter 570 and the ground line (not shown) of the substrate 600 are connected to the lead wire 609 for grounding.
The work of using a and being connected so as to be energized with the work of "soldering" is not required. In this way, labor can be saved when the printer 1 shown in FIGS. 3 to 6 and 8 is assembled.

As shown in FIG. 4, the ground line 107 provided on the front surface 101a of the board body 101 that constitutes the switch board 100 has a PCB connector 130 provided on the front surface 101a of the board body 101 that also constitutes the switch board 100. And are connected so that they can be energized. And
The static electricity is released to the outside of the printer via the flexible flat circuit body 140 connected to the PCB connector 130.

That is, the static electricity on the sheet R1 shown in FIG. 3 is grounded by the ground line 107 of the switch substrate 100, which is in contact with the metal cutter 70 for electricity so as to be able to conduct electricity.
From FIG. 4, the PCB line connector 130 on the switch substrate 100 to which the ground line 107 is electrically connected.
Via the flexible flat circuit body 140 connected to the PCB connector 130, and quickly escaped to the outside of the printer.

The PCB connector means the switch board 10.
0 or a circuit conductor such as a metal foil provided on the main board 150, which is “soldered” and used, and PCB means “Printed Circuit Board”.
ard ”is an abbreviation. The terminals used for the PCB connector are generally square pin type bus bars.

The PCB connector is mainly divided into two types, a vertical mounting type and a horizontal mounting type. The vertical mounting type PCB connector refers to a type in which the male and female connectors are mounted so that the coupling direction is perpendicular to the board. On the other hand, the horizontal mounting type PCB connector is a type in which the male and female connectors are mounted so that the coupling direction is horizontal to the board. PC shown in FIG.
The B connector 130 is of a horizontal mounting type.

Flexible Flat Circuit Body (FFC)
Is a plurality of circuit conductors composed of a thin strip, a thin single wire or an enamel wire arranged in parallel on an insulating sheet, and is abbreviated as "FFC". Examples of electric wires other than the flexible flat circuit body (FFC) 140 include a circuit body made of a flat electric wire, a circuit body made of a ribbon conductor of a round conductor, and a flexible printed circuit body (abbreviated as FPC).

As shown in FIG. 4, the flexible flat circuit body 140 connected to the PCB connector 130 corresponds to the thickness of the flexible flat circuit body 140 at the lower end on the slightly left side of the substrate body 101 constituting the switch substrate 100. And extends from the front side of the switch board 100 toward the rear side of the switch board 100 so as to straddle the wire escape portion 104 formed by being slightly dented (FIGS. 1 to 3).

As shown in FIGS. 1 to 4, the metal cutter 70 is provided with a grounding protrusion 76. As shown in FIG. 3, the vertical tip portion 76c of the grounding protrusion 76 is in conductive contact with the metal frame 160 of the printer unit 7 including the printing unit 5 mounted inside the printer 1.

Explaining in detail, the stainless cutter 7
When the grounding protrusion 76 provided at 0 is brought into contact with the metal frame 160 of the printer unit 7, a restoring elastic force is generated in the grounding protrusion 76 of the stainless cutter 70, and the restoring elastic force is generated. As a result, the rear side surface of the vertical tip portion 76c of the grounding protrusion 76 provided on the stainless steel cutter 70 is reliably brought into contact with the front end portion of the other side plate 163 of the metal frame 160 that constitutes the printer unit 7. In this way, the stainless cutter 70
And a metal frame 16 that constitutes the printer unit 7.
A value of 0 is reliably maintained in a state in which energization is possible.

In this way, the metal cutter 7 for printers is used.
The vertical tip 76c of the grounding protrusion 76 of 0 and the metal frame 160 of the printer unit 7 including the printing unit 5
Since they are in contact with each other so as to be surely energized, the static electricity generated in the printer unit 7 passes through the metal frame 160 which constitutes the printer unit 7 and after passing through the metal printer cutter 70. , To the ground line 107 of the switch substrate 100.

Therefore, like the conventional printer 501 shown in FIG. 11, the printer unit 507 and the substrate 60 are
The work of connecting the ground line of No. 0 (not shown) such that the lead wire 609b for grounding is used and the process of "soldering" is performed so as to be energized is not necessary. In this way, labor can be saved when the printer 1 shown in FIGS. 3 to 6 and 8 is assembled.

As shown in FIG. 4, the metal cutter 7 for the printer is used.
The grounding protrusion 76 of 0 is provided on the vertical portion 74 on the left end side of the forward tilting blade portion 71 provided on the metallic cutter 70. The ground protrusion 76 has a bent portion 76d formed at the base portion 76a of the vertical portion 74 and bent toward the rear side of the cutter 70 by about 45 ° (FIGS. 1 to 3). The inclined portion 76b is extended toward the rear upper side of the cutter 70 to another bent portion 76e with the base point of 76d, and the vertical tip portion 76c is formed substantially upward from the other bent portion 76e.

As described above, the metal "cutter with spring" 70 shown in FIG. 4 is attached to the case 10 shown in FIGS. 1 to 6 and 8 to print on the paper R1 and remove the paper pieces. When included in the issuing printer 1, it becomes an improved printer over prior art printers.

That is, the conventional printer 501 (see FIG.
In order to remove the static electricity of the paper R501 output from 1), the grounding lead wire 609a connecting the cutter 570 and the switch substrate 600 is the switch substrate 600.
There is no need to be provided in. Further, the grounding lead wire 609b for connecting the printer unit 507 and the switch substrate 600 is also unnecessary. Along with this, the lead wires 609a and 609b for grounding are attached to the cutter 5
70 to the printer unit 507, switch board 60
Since the work of connecting to 0 is eliminated, the labor of the assembly process can be saved.

Further, like the conventional printer 501,
The cutter 570 and the “spring member” 578 are separately required, and the troublesome assembling process of separately assembling these in the printer 501 is eliminated, and the labor of the assembling process is further reduced. Since the lead wire 609a for grounding, the metal cutter 70, and the "spring member" 578 which is a separate component are both unnecessary,
The number of parts can be significantly reduced. Further, along with this, the price of the printer provided with the metal cutter can be reduced.

As shown in FIGS. 5 and 6, the printer 1 includes the inner case 16 to which the roll paper R1 is attached, the print head 60 for printing on the roll paper R1, and the print head 60 for pressing the roll paper R1. The roller 50, the inner case 16, the print head 60, and the front case 14 and the back case 18 that cover the roller 50 are provided.

As shown in FIGS. 3 and 5 (b), the roller 50 is pressed against the outer side surface R5 of the roll paper R1 and the print head 60 is brought into contact with the inner side surface R4 of the roll paper R1. The roller 50 is rotated and printing is performed on the roll paper R1. By doing this, the roll paper R1 is printed, so that the roll paper R1
Since the “curved habit” of No. 1 is corrected, the receipt with the corrected “curved habit” is issued from the paper take-out section 6 of the printer 1.

In the conventional taxi printer 501 shown in FIG. 11 and FIG. 12, it is difficult to see the date and charge content printed on the paper piece of the roll paper R501, that is, the receipt due to the "curved curl" of the roll paper R501.
There were problems that it was difficult to store the receipt in the wallet, and when the travel expense was cleared after boarding the taxi, it was difficult to attach the receipt to the travel expense clearing sheet.

On the other hand, in the printer 1 shown in FIGS. 3 and 5, since the roll paper R1 is printed and the "curved curl" of the roll paper R1 is corrected, The conventional printer 501 (see FIG. 1)
The roll paper R501, which has been problematic in 2 (b), is given a "curving habit", and this "curving habit" solves the problem that the receipt issued from the conventional printer 501 is difficult to handle. It became a thing.

As shown in FIGS. 3 and 5 (b), in the printing unit 5 of the printer 1, the outer side surface R5 of the roll paper R1 is along the outer peripheral surface 50a of the roller 50 in the direction in which it was curved so far. By bending the roll paper R1 in the opposite direction, the "curved curl" of the roll paper R1 is corrected. That is, the outer side surface R5 of the roll paper R1 is bent along the outer peripheral surface 50a of the roller 50 into an arc shape that is opposite to the previously curved direction, so that the inner side surface R4 of the roll paper R1. The roll paper R1 that has been strongly “curved” toward is bent in the opposite direction. As a result, the "curved habit" attached to the inner side surface R4 of the roll paper R1 is further corrected.

The roller 50 is formed as a rubber-made cylindrical rotating roller 50 which is likely to exhibit an appropriate restoring elastic force over a long period of time. Further, the rubber roller 50 is
The driving force of the small motor 190 (FIG. 3) is transmitted by a gear (not shown) or the like and rotated.

The print head 60 is a thermal head 60.
It functions as. The thermal head 60 may be called a thermal head or the like. In the thermal head 60,
A large number of minute heating resistors are arranged, and when an electric current is applied to the minute heating resistors in the portion corresponding to the content to be printed, the heating resistors instantly reach a high temperature of about 300 ° C. It will be heated. When the heat-sensitive paper such as the roll paper R1 is brought into contact with the heat-generating resistor in the heated portion, the heat-sensitive paper such as the roll paper R1 is discolored in black corresponding to the heat-generating resistor in the heated portion. Roll paper R1
Will be printed on.

As described above, since the thermal head 60 is used as the print head 60 and printing is performed on the thermal paper such as the roll paper R1, the heat of the thermal head 60 directs the heat to the inner surface R4 of the roll paper R1. It is expected that the "curve habit" that was attached to it will be corrected even a little. A thin glass protective layer is provided on the surface of the heating resistor in order to prevent the heating resistor from being abraded by the thermal head 60 and the thermal paper such as the roll paper R1 rubbing against each other.

The roll head R1 is rubbed against the heat sensitive head 60, which is sandwiched between the rubber roller 50 and the heat sensitive head 60 having the glass protective layer, and is provided with the glass protective layer. When printing or the like is performed on R1, static electricity is generated on the roll paper R1.

The static electricity generated in this way passes through the spring-loaded cutter 70 (FIG. 3) in contact with the roll paper R1 and then passes through the ground line 107 (FIG. 4) provided on the switch substrate 100. , The flexible flat circuit body (F
After passing through the FC 140, the wire is transmitted through the ground wire of the wire harness (not shown) and quickly escaped to the metal body (not shown).

The front case 14 in which the above-mentioned components are housed
Is provided with a front wall 14b that constitutes an operation portion 80 in which operation buttons 81, 82 to 84 (FIGS. 4 and 8) are arranged in parallel, and a peripheral wall 14a that forms the front case 14, and is surrounded by these walls. The various kinds of equipment required for the function of the printer 1 are assembled and stored in the storage portion 14c (FIGS. 3, 5 (b) and 6). As shown in FIGS. 5 and 6, the inner case 1
6 is a base wall 16b, a pair of side walls 16a, and a protruding step portion 1
6c, and the portion surrounded by these plate-shaped walls is the roll paper accommodation unit 4. Also, the back case 18 is
The base wall 18b and the peripheral wall 18a surrounding the base wall 18b are provided, and various kinds of equipment (not shown) are stored in the storage portion 18c formed by being surrounded by the base wall 18b and the peripheral wall 18a.

As shown in FIGS. 3 to 6, since the back case 18 (FIGS. 5 and 6) is easily assembled to the front case 14, the back case 18 is guided to the peripheral edge of the opening of the peripheral wall 18a forming the back case 18. A brim 18d is provided. In addition, as shown in FIGS. 3 to 6, in correspondence with the guide flange 18d provided on the peripheral edge of the opening of the peripheral wall 18a forming the back case 18, the peripheral peripheral edge of the peripheral wall 14a forming the front case 14 is formed on the rear peripheral edge of the peripheral wall 18a. A guide notch groove 14d is provided.

Then, the guide flange 18d provided on the peripheral edge of the opening of the peripheral wall 18a of the rear case 18 is fitted into the guide notch groove 14d provided on the peripheral edge of the rear opening of the peripheral wall 14a of the front case 14. Thus, the front side case 14 and the back side case 18 can be fitted easily, quickly and accurately. Further, in this way, the various types of equipment required for the function of the printer 1 housed in the case 10 can be easily protected from foreign matter such as dust.

The case 10, such as the front case 14, the inner case 16, and the back case 18, is acrylonitrile butadiene styrene resin (abbreviated as ABS) which is excellent in rigidity, impact resistance, electric insulation, heat resistance, weather resistance, and moldability. ) Is used. If an acrylonitrile butadiene styrene resin (ABS) is used to form the case 10 such as the front case 14, the inner case 16 and the back case 18, the case 1 of the printer body 2
0 is lightened. Moreover, even if an external force such as an impact is applied to the case 10, the case 10
Is durable and hard to break.

As shown in FIG. 5A, the holding portion 30 for supporting the roll paper R1 is provided on a pair of other side walls forming the inner case 16 incorporated in the printer body 2. The pair of holding portions 30 includes a holding frame 31 formed on a pair of other side walls of the inner case 16 and a main body R of the roll paper R1.
2, a support member 33 that pivotally supports the elastic member 35, an elastic member 35 that presses the support member 33 toward the roll paper accommodation unit 4, and a restoring elasticity that is exhibited by the elastic member 35 being compressed in the longitudinal direction. The lid 37 is provided to prevent the elastic member 35 from being ejected from the inside of the holding frame 31 formed in the inner case 16 by force.

As described above, the support member 33 is attached to the holding portion 30.
The elastic member 35, the lid 37, and the holding frame 31 that houses them are provided, so that the tip portion 3 having a substantially conical shape is formed.
The support member 33 provided with 3a extends in the left-right width direction of the printer 1, that is, along the direction in which the hollow hole R3 of the main body R2 of the roll paper R1 attached to the printer 1 is inserted as shown in FIG. , Will be able to move back and forth.

By the substantially conical tip portions 33a of the pair of support members 33 entering from the both sides of the hollow hole R3 provided in the main body R2 of the roll paper R1 while moving toward the hollow hole R3. The main body R2 of the roll paper R1 is pivotally supported by the pair of support members 33 that form the holding unit 30.

Further, the tip end portion 33a of the support member 33 that pivotally supports the main body R2 of the roll paper R1 and the main body R of the roll paper R1.
The support member 33 has good mechanical strength, slidability, wear resistance, fatigue resistance, dimensional stability, and molding processability because it is in good contact with the hollow hole R3 provided in No. 2 in rotation. It is formed by using an excellent polyacetal resin (POM).

Further, the elastic member 35 housed inside the holding frame 31 constituting the holding portion 30 is compressed along the longitudinal direction of the elastic member 35 by the restoring elastic force, and the holding frame is held. In order to prevent the lid 37 that is press-fitted to the press-fitting member 31 from being pushed out of the holding frame 31 due to such a situation, in the printer 1, a pair of Corresponding to the two lids 37 attached to the outside of the holding frame 31, a pair of pressing ribs 14e are formed to project toward the inside of the front case 14, and the two lids 37 that form the holding portion 30 and the front side. The pair of pressing ribs 14e provided on the case 14 are brought into contact with each other.

By doing so, the restoring elastic force of the elastic member 35 provided inside the holding frame 31 forming the holding portion 30 causes the holding frame 31 forming the holding portion 30 to move to the lid 37. The occurrence of the problem that the elastic member 35 and the support member 33 are inadvertently disassembled is prevented in advance.

As shown in FIG. 6 (b), the main body 24 forming the cover 20 has a front wall 24b and a pair of side walls 24a (FIG. 5 (a)) formed on both sides of the front wall 24b. Is. The front wall 24b of the cover 20 has an arc portion 24c formed in a substantially curved shape corresponding to the main body R2 of the roll paper R1, and
The flat plate portion 24d following the circular arc portion 24c and the flat plate portion 2
A curved stepped portion 24e that forms the sheet take-out portion 6 that is extendedly formed in 4d, an inclined portion 24f that extends from the curved stepped portion 24e and that also forms the sheet take-out portion 6, and a tip of the inclined portion 24f. It is provided with a claw 24g provided.

Claw 24g provided at the tip of the inclined portion 24f
When the roll paper R1 is replenished in the printer 1 and the leading edge R6 of the roll paper R1 is sent to the outside of the printer 1 via the printing unit 5 as shown in FIGS. In order to prevent the leading end R6 of the roll paper R1 from being caught by the rotating roller 50, it is provided at the leading end of the inclined portion 24f forming the front wall 24b of the cover 20.

Further, as shown in FIG. 5B, this cover 20
Includes a roller 50 included in the printing unit 5. As shown in FIGS. 3, 5 (b) and 6 (b), this roller 50
Is a mounting support portion 28 formed on the body 24 of the cover 20.
It is attached to the cover 20 via. Cover 20
And the arc portion 24c of the front wall 24b that forms the
The space surrounded by the pair of side walls 24a provided around 4c serves as a roll paper accommodation unit 25 on the cover 20 side.

Further, in order to prevent a problem in which the cover 20 and the holding portion 30 provided in the printer main body 2 interfere with each other and the cover 20 does not close with respect to the printer main body 2, FIG. Further, as shown in FIG. 6, a pair of side walls 24a forming the cover 20 are provided with arc-shaped relief portions 24h.

In order to attach the cover 20 to the printer main body 2 easily and quickly, as shown in FIG. 6, a pair of flexible arms 23 is formed from the side wall 24a of the main body 24 forming the cover 20.
Is formed by extension, and the base 2 of this flexible arm 23 is
A bent portion 23b bent at a substantially right angle is formed in a substantially intermediate portion from 3a to the tip. In addition, the flexible arm 2
A column-shaped support shaft 21 is provided at the tip of the protrusion 3. The support shaft 21 is formed toward the outside of the pair of flexible arms 23.

Further, between the support shaft 21 provided at the tip of the flexible arm 23 and the bent portion 23b provided at the substantially middle portion of the flexible arm 23, a columnar projection 22 is provided. Has been formed. As with the support shaft 21, the protrusion 22
Is also formed toward the outside of the pair of flexible arms 23. As shown in FIG. 6, the flexible arm 23 of the cover 20.
The protrusion 22 provided on the cover 2 covers the case 10
It is provided as the locking portion 22 which can be maintained in the opened state. The protrusion 22 provided on the flexible arm 23 has a protrusion height about half that of the support shaft 21 provided on the tip of the flexible arm 23. Is formed.

Further, as shown in FIGS. 5 and 6, the cover 20
Corresponding to the protrusion 22 provided on the flexible arm 23 of
The “dent portion” 12 is provided inside the pair of side walls 16 a forming the inner case 16. As shown in FIGS. 5 (b) and 6, this "dent" 12 is a sliding contact surface 12a provided parallel to the inner surfaces 16a ₁ (FIG. 6 (a)) of the pair of side walls 16a forming the inner case 16. And the slidable sliding contact surface 12 continuing from the sliding contact surface 12a to the inner surface 16a _{1 of the} side wall 16a.
As shown in FIG. 6, the “dent portion” 12 is provided as the engaging portion 12 that can be maintained in the state where the cover 20 is opened with respect to the case 10.

As shown in FIGS. 5 (b) and 6, the pair of flexible arms 23 are provided at their tips with the cylindrical support shafts 21 directed outward, so that the inner case 16 is not attached. The cylindrical support shafts 21 of the pair of flexible arms 23 projecting from the cover 20 are fitted into the cylindrical shaft holes 11 of the pair of side walls 16 a to be formed, and the cover 20 including the pair of flexible arms 23. However, when attached to the inner case 16 incorporated in the printer body 2, the pair of flexible arms 23 projecting from the cover 20 are bent inward toward each other.

At this time, in order to prevent the pair of flexible arms 23 projecting from the cover 20 from being damaged from the root 23a, they are provided inside the pair of side walls 16a forming the inner case 16. The “dented portion” 12 is formed because the cylindrical support shaft 21 protruding from the tip of the flexible arm 23 of the cover 20 is guided to the cylindrical shaft hole 11 provided in the side wall 16 a of the inner case 16. The guide groove is also formed.

In this way, when the cylindrical support shaft 21 projecting from the tip of the flexible arm 23 of the cover 20 is fitted into the cylindrical shaft hole 11 provided in the side wall 16a of the inner case 16, , The cylindrical support shaft 21 of the flexible arm 23,
The side wall 16 of the inner case 16 passes through the inside of the “dented portion” 12 inside the pair of side walls 16 a forming the inner case 16.
If the cover 20 is inserted into the cylindrical shaft hole 11a of FIG.
It is easy and quick to install.

Further, the roll paper R1 shown in FIG. 7 is loaded into the roll paper container 4 from the opening 3 of the printer body 2 shown in FIG.
Is installed. Thereafter, with respect to the printer body 2 to which the roll paper R1 is attached, the cover 20 is rotated downward around the support shaft 21 and the cover 20 is closed, so that as shown in FIG. The work of mounting the roll paper R1 is completed.

A pair of flexible arms 2 forming the cover 20 in a state where the cover 20 attached to the printer body 2 so as to be openable and closable is closed with respect to the printer body 2.
By providing the protrusion 22 toward the outside of the printer 3, the tip of the protrusion 22 and the inner surfaces 16a ₁ of the pair of side walls 16a forming the inner case 16 inside the printer body 2 contact each other. Will be contacted.

Therefore, in the state where the cover 20 attached to the printer body 2 so as to be openable and closable is closed with respect to the printer body 2, the pair of flexible arms 23 projecting from the cover 20 are mutually The cover 20 is kept in a closed state with respect to the printer main body 2 in a state in which the cover 20 is slightly bent inward, and thereby the restoring elastic force is exerted on the pair of flexible arms 23 ( Figure 5 (b)
).

In this state, the cover 20 is closed with respect to the printer main body 2, but as shown in FIG. 6 (a), the projection 22 provided on the flexible arm 23 is projected.
Is formed so as to have a protruding height which is about half the protruding height of the support shaft 21 protruding from the tip of the flexible arm 23. The support shaft 21 projecting from the outer end of the flexible arm 23 forms a pair of side walls 16 forming an inner case 16 of the printer body 2.
It does not accidentally come off from the shaft hole 11 of a.

Inner case 1 built in the printer body 2
Since the support shaft 21 of the flexible arm 23 provided on the cover 20 is not easily disengaged from the shaft hole 11 of the side wall 16a of No. 6, it is provided so as to project toward the outside of the pair of flexible arms 23. The protruding portion 22 is formed to have a protruding height which is about half or less than the protruding height of the support shaft 21 provided outside the tip of the flexible arm 23. Is preferred.

When the cover 20 is opened with respect to the printer main body 2, the cover 20 should be rotated upward with respect to the printer main body 2 shown in FIG. Then, as shown in FIG. 6B, the cover 20 can be opened with respect to the printer body 2. At that time, the protrusions 22 of the pair of flexible arms 23 projecting from the cover 20 are installed inside the printer body 2 by the restoring elastic force contained in the pair of flexible arms 23. Inner case 1
6 will be fitted in the "dented parts" 12 of the pair of side walls 16a. As a result, with respect to the printer body 2, the cover 20 is maintained in a state of being opened upward.

When the cover 20 is closed again with respect to the printer main body 2, as described above, the cover 20 is rotated downward with respect to the printer main body 2 around the support shaft 21. As shown in FIG.
Will be closed.

When the cover 20 rotatably attached to the printer body 2 is closed with respect to the printer body 2, the remaining amount of the roll paper R1 loaded in the printer 1 can be easily confirmed. In order to prevent the photosensor 40 installed in the printer body 2 from being hypersensitive to sunlight, and to prevent the roll paper R1 from being discolored by the sun rays including ultraviolet rays and infrared rays. The cover 20 is formed by using a black semitransparent flexible synthetic resin material.

As a base material of such a flexible synthetic resin,
For example, a polycarbonate resin (PC) can be cited, and the cover 20 shown in FIGS. 3, 5, 6 and 8 is formed by using a polycarbonate resin (PC) to which a black colorant is added. Is. Polycarbonate resin (PC) is excellent in optical properties such as transparency as described above, and is also excellent in impact resistance, electric insulation, heat resistance, and moldability.

Examples of black colorants include carbon powder. Polycarbonate resin (PC)
Carbon-based powder was used as the black colorant added to, and specifically, carbon black excellent in light resistance, colorability, thermal stability, and weather resistance was used. Carbon black also serves as a stabilizer and is inexpensive. Further, a combination of carbon black mixed with a polycarbonate resin (PC) is also a preferable combination that does not adversely affect the resin molded body.

The cover 20 attached to the printer body 2 so as to be openable and closable is, when the cover 20 is closed with respect to the printer body 2, a side wall 24a of the cover 20 which is semitransparent black.
Since the remaining amount of the roll paper R1 mounted on the printer 1 can be confirmed easily and quickly from the side, the pair of side walls 24a forming the cover 20 as shown in FIG. The thickness of the front wall 24 forming the cover 20
It is formed thinner than the thickness of b.

As a result, the cover 2 which is semi-transparent to black
The transparency of the pair of side walls 24a forming the
Is higher than the transparency of the front wall 24b forming the
A cover 20 attached to the printer body 2 so as to be openable and closable
However, in the state in which the printer body 2 is closed,
From the side wall 24a side of the cover 20, the remaining amount of the roll paper R1 located inside the cover 20 can be seen through and clearly seen.

In order to easily confirm the remaining amount of the roll paper R1 mounted on the printer 1, for example,
It is also conceivable to reduce the filling amount of the black colorant added to the synthetic resin to form a black semitransparent cover in which the light transmittance of the entire cover is increased. However, with such a cover, since the light transmittance is increased, the optical sensor 4 installed in the printer body 2 is
0 is apt to be sensitized by sunlight, which may cause malfunction of the printer, and may cause discoloration of the roll paper R1 by sunlight such as ultraviolet rays and infrared rays. .

On the other hand, in the cover 20 of the printer 1 shown in FIGS. 3, 5, 6, and 8, the cover 20
The thickness of the front wall 24b forming the cover 20 is the same as before, and the thickness of the pair of side walls 24a forming the cover 20 is smaller than the thickness of the front wall 24b forming the cover 20. Since it is formed (FIG. 5), it is possible to prevent malfunction of the optical sensor 40 due to sunlight and discoloration of the roll paper R1 due to sunlight.
The mechanical strength of the main body 24 of the cover 20 is not extremely reduced, and the side wall 24 of the cover 20 in the closed state is not affected.
From the a side, the remaining amount of the roll paper R1 loaded in the printer 1 can be checked easily and quickly at a glance.

As shown in FIG. 7, the roll paper R1 is formed such that the inner surface R4 of the long sheet is superposed on the outer surface R5 of the single long sheet of paper. The main body R of the roll paper R1 is wound continuously in a cylindrical shape.
2 is formed. In this way, the main body R2 of the roll paper R1 is formed as a cylinder having the hollow hole R3. The roll paper R1 is formed such that the chemical surface for printing is the inner surface R4.

The process until the roll paper R1 is attached to the printer 1 and set in a printable state will be described. The roll paper R1 shown in FIG. 7 is loaded into the roll paper container 4 from the opening 3 of the printer body 2 shown in FIG. 6, and the roll paper R1 is attached to the printer body 2. At that time, in a state where the cover 20 shown in FIG. 5 is opened, the support member 33 constituting the holding portion 30 provided on the pair of other side walls of the inner case 16 is
A hollow case R3 provided in the main body R2 of the roll paper R1 is fitted in the inner case 16 installed in the printer main body 2.
The main body R2 of the roll paper R1 is attached to.

Next, in FIG. 5B, the main body R2 of the roll paper R1 is turned in the direction opposite to the direction of rotation of the hands of the timepiece, that is, counterclockwise, and is directed toward the front wall 24b of the cover 20. The leading edge R6 (FIG. 7) of the roll paper R1 is pulled out.

Then, the roll paper R1 is detected by the optical sensor 40.
(FIG. 5B) is passed through the front side of the optical sensor 40 so as to be shielded from light. The optical sensor 40 is used as a sheet detecting unit. Thereafter, the outer side surface R5 of the roll paper R1 is brought into contact with the outer peripheral surface 50a of the roller 50, the inner side surface R4 of the roll paper R1 is brought into contact with the print head 60, and the roll paper R1 passes through the printing unit 5. It will be.

At this time, the "curved habit" attached to the inner side surface R4 of the roll paper R1 is substantially corrected. In this way, the long roll paper R1
While being sandwiched between the print head 60 and the roller 50, it is moved in a substantially flat shape toward the blade 71 of the cutter 70 that cuts it off, and the front end R6 of the roll paper R1 is moved to the printer 1.
The sheet is taken out of the printer 1 through the paper take-out port 6.

Thereafter, with respect to the printer main body 2 to which the roll paper R1 is attached, the cover 20 is pivoted downward about the support shaft 21 and the cover 20 is closed, so that the cover 20 shown in FIG. As described above, the roll paper R1 is set in the printer 1 in a printable state.

In order to easily and quickly attach the roll paper R1 to the printer main body 2, as shown in FIG. 5, a hollow hole R3 provided in the main body R2 of the roll paper R1 and the roll paper R1 are provided.
A gap is provided between the printer main body 2 and the support member 33 that supports the printer. However, due to the provision of the gap, the roll paper R1 is in a state where “center misalignment” occurs, and the support member 3 that constitutes the holding unit 30.
3 will be pivotally supported.

Also in the conventional printer 501 shown in FIG. 12, a gap is provided between the hollow hole R503 provided in the main body R502 of the roll paper R501 and the mandrel 533 supporting the roll paper R501. Therefore, the roll paper R501 is supported by the mandrel 533 in a state where “center misalignment” occurs.

When the new roll paper R501 is installed in the printer 501 and the cover 520 is closed with respect to the printer body 502 in such a state, the front wall 524 forming the body 524 of the cover 520.
The inner side surface of the circular arc portion 524c of b and the outer side surface R504 of the main body R502 of the roll paper R501 are brought into sliding contact with each other, which causes large friction between the rollers 550 and the small size for driving the roller 550. Motor 690 (Fig. 1
1) and gears (not shown) will be heavily loaded.

On the other hand, in the printer 1 shown in FIGS. 5 and 6, a plurality of sliding contact ribs 26 are provided on the arc portion 24c of the front wall 24b forming the main body 24 of the cover 20. The plurality of sliding contact ribs 26 are provided along the circular arc portion 24c of the cover 20 so as to project inside the circular arc portion 24c. Further, as shown in FIG. 5A, the plurality of sliding contact ribs 26 are provided inside the arc portion 24c of the cover 20 in the left-right width direction of the printer 1, that is, in the hollow body R2 of the roll paper R1 attached to the printer 1. The holes are arranged side by side along the direction of inserting the hole R3.

Further, the plurality of sliding contact ribs 26 and the roll paper R
5 does not damage the roll paper R1 by the plurality of sliding contact ribs 26 when the roll paper R1 is rubbed against the roll paper R1.
As shown in (b) and FIG. 6 (b), the plurality of sliding contact ribs 26 provided on the cover 20 gradually move from the starting end 26a formed as a gently curved portion along the circular arc portion 24c of the cover 20. It is formed so as to protrude toward the end 26b formed as a curved portion.

As shown in FIG. 5, when the new roll paper R1 is installed in the printer 1, the outer surface R5 of the main body R2 forming the roll paper R1 and the arc portion 24c of the cover 20 are formed.
While rubbing against the sliding contact ribs 26 protruding inside the
The roll paper R1 will be rotated. A plurality of sliding contact ribs 26 projecting inside the arc portion 24c of the cover 20,
Since the contact area with the outer side surface R5 of the main body R2 forming the roll paper R1 is small, the friction when the two are in sliding contact is also small, and the load applied to the roller 50 and the roller 5
The load applied to the small motor 190 (FIG. 3) and the gear (not shown) that drives 0 is negligible.

As shown in FIG. 5, the outer surface R5 of the main body R2 forming the roll paper R1 and the circular arc portion 2 of the synthetic resin cover 20.
Static electricity is generated on the roll paper R1 when the sliding contact ribs 26 projecting from the inside of the roll sheet 4c rub against each other. As described above, the static electricity generated in this manner passes through the spring-loaded cutter 70 (FIG. 3) that comes into contact with the roll paper R1 and then,
Ground line 1 provided on the switch substrate 100
07 (FIG. 4), then passes through the PCB connector 130 and passes through the flexible flat circuit body (FFC) 14
After passing through 0, the wire is transmitted through the ground wire of the wire harness (not shown) and quickly escaped to the metal body (not shown).

As shown in FIGS. 3, 5 (b) and 6 (b),
The flat plate portion 2 of the front wall 24b forming the main body 24 of the cover 20
A plurality of guide ribs 27 are provided on 4d. The plurality of guide ribs 27 project from the flat plate portion 24d of the cover 20 toward the inside of the cover 20 at a substantially right angle.

The plurality of guide ribs 27 are arranged side by side along the horizontal direction of the flat plate portion 24d of the cover 20 at intervals. Between the plurality of guide ribs 27, the plurality of guide ribs 2 are connected to each other.
A reinforcing plate 27c for improving the strength of No. 7 is provided along the lateral width direction of the cover 20 so as to project from the flat plate portion 24d of the cover 20 toward the inside of the cover 20 at a substantially right angle.

As shown in FIGS. 3, 5 (b) and 6 (b), when the plurality of guide ribs 27 and the roll paper R1 are in sliding contact with each other,
Since the roll paper R1 is not scratched by the corners 27a and 27b of the plurality of guide ribs 27, the corners 27a and 27b of the plurality of guide ribs 27 projecting from the flat plate portion 24d of the cover 20 are provided. Is formed as a gently curved portion.

A plurality of guide ribs 2 having such a shape
7 protrudes from the flat plate portion 24d of the cover 20 toward the inside of the cover 20 at a substantially right angle, and a plurality of guide ribs provided on the cover 20 when the cover 20 is closed with respect to the printer body 2. In the printer 1 in which the roll paper R1 and the roll paper R1 are in sliding contact with each other, when the roll paper R1 is printed, the roll paper R1 is guided by the guide ribs 27, so that the roll paper R1 is bent. The occurrence of a problem such as "wrinkle" on the roll paper R1 due to being damaged or the like is prevented in advance.

This will be described in detail. While the automobile is running, vibration is applied to the taxi printer 501 of FIG. 12 mounted on the automobile, and this vibration causes the roll paper R501 installed in the printer 501 to loosen. , Such roll paper R501, roller 5
Roll paper R50 that passes through the printing unit 505 when printing is performed by being sandwiched by the print head 560 and the print head 560.
1 is eccentrically sandwiched between the roller 550 and the print head 560, which causes the roll paper R501 to be bent or the like, which may cause a problem such as "wrinkle" on the roll paper R501. It had been.

However, as shown in FIG. 6 (b), the plurality of guide ribs 27 are projected from the flat plate portion 24d of the cover 20 toward the inside of the cover 20 at a substantially right angle, and as shown in FIGS. 3 and 5 (b). ), When the cover 20 is closed with respect to the printer main body 2, the roll paper R1 is the printer 1 in which the plurality of guide ribs 27 provided on the cover 20 are in sliding contact with the roll paper R1. Since it is guided by the guide ribs 27, the occurrence of the above-mentioned inconvenience can be prevented.

Case 1 which constitutes the printer main body 2
0, a cover 20 for covering the roll paper R1 is attached, and a plurality of guide ribs 27 with which the outer surface R5 of the roll paper R1 is slidably contacted are formed on the cover 20. When the guide ribs 27 provided on the cover 20 and the outer surface R5 of the roll paper R1 are brought into sliding contact with each other when closed, the outer surface R5 of the roll paper R1 is formed on the cover 20. The curved corner portions 27 a of the guide ribs 27 are slidably contacted with the curved corner portions 27 a of the plurality of guide ribs 27.
It will be bent along a.

As a result, the roll paper R1 that has been curved toward the inner side surface R4 is bent toward the outer side surface R5 of the roll paper R1 in the opposite direction.
Therefore, the "curved habit" attached to the inner side surface R4 of the roll paper R1 is further corrected.

When the plurality of guide ribs 27 provided on the synthetic resin cover 20 and the outer surface R5 of the roll paper R1 are brought into sliding contact with each other, static electricity is generated on the roll paper R1. As described above, the static electricity thus generated passes through the ground line 107 (FIG. 4) provided on the switch substrate 100 after passing through the spring-loaded cutter 70 (FIG. 3) that comes into contact with the roll paper R1. After that, the PCB connector 1
After passing through 30, the flexible flat circuit body (FF
C) After passing through 140, it is transmitted to the ground wire of the wire harness (not shown) and quickly escaped to the metal body (not shown).

As shown in FIG. 5B, the main body R2 of the roll paper R1 supported by the holding portion 30 of the printer main body 2 with respect to the rotation direction of the roller 50 constituting the printing unit 5 provided in the printer 1, It is rotated in the opposite direction.

More specifically, in the longitudinal sectional view of the printer 1 shown in FIG. 5B, the roller 50 forming the printing unit 5 presses the print head 60 via the roll paper R1 and watches the time. Direction, which causes the roller 5
0 and the long roll paper R1 sandwiched between the print head 60 are sent toward the paper outlet 6 of the printer 1.

Along with this, a roll paper R1 formed by continuously winding a long paper in a cylindrical shape.
The main body R2 of will be rotated counterclockwise. That is, the rotation direction of the roller 50 and the rotation direction of the main body R2 of the roll paper R1 are opposite to each other.

In order to do so, the main body R2 of the roll paper R1 is set in the printer 1 so that the main body R2 of the roll paper R1 is rotated in the opposite direction to the rotation direction of the roller 50.
Should be installed. Therefore, the quality of the roll paper R1
The "curved curl" of the roll paper R1 is corrected without making a large design change of the printer 1. Further, since no major design change of the printer 1 is required, labor and cost associated with the change of the printer 1 can be reduced.

A state in which printing is performed on the roll paper R1 set in the printer 1 will be described with reference to FIGS. 1 to 5 and 8. Printer body 2 shown in FIGS. 1, 3 and 8
On the other hand, as shown in FIG. 2, the curved surface thick portion 81e of the receipt issuing button 81 is pressed by a finger or the like. At that time, the receipt issuing button 81 is the upper portion 91c of the peripheral wall 90a forming the spacer 90, and the spacer 9
It is pressed toward the inside of the printer main body 2 around the tip of a fulcrum 99 projecting from the front surface 91a of 0.

At this time, a receipt issuance button 81
Is mounted between the issuance button 81 and the spacer 90, and presses the issuance button 81 toward the outside of the printer body 2 from the rear surface 81 b of the issuance button 81. It is pressed toward the inside of the printer body 2 against the restoring elastic force of 78 _I.

Along with this, the flange 8 of the issue button 81
The movable portion 118 (FIGS. 1 and 3) of the tact switch 110, which is abutted or provided with a slight gap on the rear surface 81b of the issuing button 81 by the lower portion 81d of 1f _I , is shown in FIG. As described above, the tact switch 110 is pressed toward the inside of the main body 115.
As a result, electrical contact is made in the tact switch 110, an electric signal is sent from the tact switch 110, and the signal is processed in each electric circuit.

At this time, an excessive pressing force F of, for example, 1 N is applied to the issue button 81 with respect to the front case 14 constituting the printer body 2, and an operation instruction is given to the printer. Tact switch 110
Since a pair of stopper portions 95 _I for stopping the pressing of the issuing button 81 are formed in the spacer 90 provided with the storage portion 92 _II for storing (FIG. 4), the pair of stopper portions 95 _I The pressing force applied to the tact switch 110 will be limited.

After that, the small motor 190 (FIG. 3) incorporated in the printer 1 is driven, and the roller 50 shown in FIGS. 3 and 5 (b) is rotated. Cover 2
The roll paper R1 is pressed against the print head 60 by the roller 50 attached to 0, and the inner surface R of the roll paper R1 is pressed by the print head 60 while the roller 50 is rotated.
4 is printed and the rotation of the roller 50 causes
The roll paper R1 is sent out of the printer 1 from the paper outlet 6 of the printer 1.

Then, the long roll paper R1 sent out of the printer 1 from the paper take-out port 6 of the printer 1
As shown in FIG. 3, the sheet is brought into contact with the blade 71 of the cutter 70 and cut off to form a piece of paper, that is, a receipt. In this way, the taxi printer 1 issues a receipt.

The conventional printer 50 shown in FIG. 12 (b).
5 compared to the roll paper R501 printed by No. 1 in FIG.
The roll paper R1 printed by the printer 1 shown in (b) has "curved curl" corrected.
As described above, the receipt issued using the taxi printer 1 shown in FIG. 5 (b) has a “curved habit” corrected as compared with the receipt issued using the conventional taxi printer 501. It has been done.

The instrument panel 400 to which the printer 1 is attached will be described with reference to FIG. An instrument refers to an instrument, and a panel means a control panel. Therefore, an instrument panel refers to an instrument panel. The instrument panel is also called a dashboard or dash panel. Also,
The instrument panel is often abbreviated as "instrument panel".

Most of the instrument panels are formed as molded articles made of synthetic resin.
In addition, the instrument panel includes not only a portion for accommodating meters and switches but also a portion for accommodating an audio system and an air conditioner unit. In order to make it easier to absorb impacts and the like, an instrument panel is composed of a plurality of layers such as a core material covered with a pad, and such an instrument panel is often used as an instrument panel.

Instrument panel 4 shown in FIG.
00 is the meter mounting portion 4 to which the meter unit is assembled
10, a central mounting portion 430 for accommodating the center cluster unit 300, a cover 450 for covering the accommodating portion for accommodating the airbag unit, and the like. The center cluster unit 300 also includes an air conditioner air outlet 310 to which fins for flow rate adjustment are attached, a car radio 330, a car stereo 350, and the like.

Such an instrument panel 400
In addition, since the taxi meter 200 having the display unit is provided, the taxi driver and the passengers of the taxi can easily recognize the contents of the fare during or after traveling at a glance. In addition, the taximeter 200
At the same time, since the taxi printer 1 is provided on the instrument panel 400, the taxi driver charges the passengers a fee equivalent to the fare and receives the taxi. Issuing a receipt proving that the driver has been paid will be easy and quick.

At this time, the printer 1 in which the above-described switch mounting structure of the present invention is shared with the taximeter 200.
Therefore, for example, as shown in FIG. 2, an excessive pressing force F of 1N is inadvertently applied to the receipt issuing button 81 by a driver of a strong taxi, and such an excessive pressing force is applied. Even if force is applied to the tact switch 110 corresponding to the issue button 81, the accommodating portion 92 _{II in} which the tact switch 110 is accommodated is accommodated.
Since the pair of stopper portions 95 _I for stopping the pressing of the issuing button 81 are formed on the spacer 90 provided with, the lower portion 81 d of the flange 81 f _I of the issuing button 81 is brought into contact with the pair of stopper portions 95 _I. It

As a result, the pressing force applied to the tact switch 110 is limited. Therefore, it is possible to prevent damage to the tact switch 110 due to an excessive pressing force.

With respect to the mounting structure of the switch according to the present invention, the vertical taximeter printer 1 in which the fare displayed on the taximeter 200 (FIG. 8) is printed.
However, the switch mounting structure of the present invention is not limited to the taximeter printer 1 including the thermal head 60, but may be applied to a vertical printer or a horizontal printer, or a printer of another printing method. The switch mounting structure of the present invention can be applied to printers of all types and other types.

[0241]

As described above, according to the first aspect of the present invention, even when an excessive pressing force is applied to the operation button, the spacer provided with the accommodating portion for accommodating the switch, Since the stopper portion for stopping the pressing of the operation button is formed, the pressing force applied to the switch is limited by the stopper portion. Therefore, the switch accommodated in the accommodating portion of the spacer is protected from the excessive pressing force applied to the operation button. As a result, it is possible to prevent the occurrence of the problem that the switch is damaged due to the excessive pressing force applied to the operation button.

According to the second aspect of the present invention, since the stopper portion for stopping the pressing of the operation button is formed on the front surface of the spacer as a protrusion, the spacer is not made larger than necessary. The size of the spacer provided with the protrusion is substantially the same as the size of the spacer not provided with the protrusion. Therefore, by forming the stopper portion on the spacer, it is possible to avoid the need for a large design change, and it is possible to easily form the protrusion on the spacer for stopping the pressing of the operation button.

According to the third aspect of the present invention, when one operation button is pressed, the one operation button is brought into contact with a pair of stopper portions formed on the spacer corresponding thereto. It will be. Therefore, it is avoided that the operation button is abutted against the stopper portion of the spacer and stopped pressing in an unstable state such as wobbling, and the operation button pressing is stopped in a stable state. It becomes possible.

According to the fourth aspect of the invention, since the stopper portion formed on the spacer for stopping the pressing of the operation button is arranged in parallel at a preferable stop position for the pressing of the operation button, a plurality of operation operations can be performed. Even if any of the buttons is pressed, the stop position of the operation button does not vary. Therefore, no matter which of the plurality of operation buttons is pressed, the operation buttons can be stopped in a substantially uniform state.

According to the fifth aspect of the invention, the switch is positioned inside the case corresponding to the mounting position of the operation button on the case. Therefore, when the operation button is pressed against the case, the switch is surely pressed along with the pressing of the operation button. Also, on the rear side of the operation button attached to the case, and
When the board is fixed in the case, the positional relationship between the switch mounted on the front side of the board and the operation button attached to the case becomes substantially the same. Therefore, the positioning of the switch with respect to the operation button can be performed easily and quickly.

According to the sixth aspect of the invention, the light emitted from the illumination is easily reflected by the white spacers surrounding the illumination, and the light emitted from the illumination and the white spacers surrounding the illumination. The reflected light
By touching the operation button, the operation button
It will be illuminated brighter.

According to the invention described in claim 7, the operation button is assembled to the case in a state where it can be elastically restored while suppressing rattling. That is, the operation button, the cutter, the spacer, and the board are assembled into the case, and the board is fixed to the case, so that the elastic portion of the cutter is pressed against the operation button, whereby the operation button is The case is assembled to the case in a state where it can elastically return from the inside to the outside of the case. Therefore, the operation feeling when the operation button is pressed against the case is good.

According to the eighth aspect of the invention, a driver of a taxi having a strong force may inadvertently apply an excessive pressing force to the operation button, and such an excessive pressing force may be applied to the switch. Even if this happens, damage to the switch will be prevented.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an embodiment of a switch mounting structure according to the present invention.

FIG. 2 is a vertical cross-sectional view showing a state where a switch has been pressed.

FIG. 3 is a vertical cross-sectional view showing an operation unit and a printer unit provided in the printer body.

FIG. 4 is an exploded perspective view showing a mounting structure of a switch.

FIG. 5 is a cross-sectional view showing a state where roll paper is attached to the printer body and the cover is closed to the printer body. (a) is an AA sectional view of (b). (b) is a longitudinal sectional view showing the printer body, the cover, and the roll paper.

FIG. 6 is a cross-sectional view showing a state in which a cover is attached to the printer body and the cover is opened with respect to the printer body. (a) is a BB sectional view of (b). (b) is a longitudinal sectional view showing the printer body and the cover.

FIG. 7 is a perspective view showing a roll paper.

FIG. 8 is an explanatory diagram showing a state in which a printer is attached to an instrument panel of an automobile.

FIG. 9 is a vertical cross-sectional view showing one embodiment of a conventional switch mounting structure.

FIG. 10 is a vertical sectional view showing a state where a conventional switch is pressed.

FIG. 11 is a vertical cross-sectional view showing an operation unit and a printer unit provided in a conventional printer body.

FIG. 12 is a cross-sectional view showing a state where roll paper is attached to a conventional printer body and a cover is closed to the printer body. (a) is a CC sectional view of (b). (b) is a longitudinal sectional view showing the printer body, the cover, and the roll paper.

FIG. 13 is a view showing that a cover is attached to a conventional printer body,
FIG. 3 is a cross-sectional view showing a state where a cover is opened with respect to the printer body. (a) is a DD sectional view of (b). (b) is a longitudinal sectional view showing the printer body and the cover.

FIG. 14 is a perspective view showing a roll paper.

[Explanation of symbols]

1 Printer 10 Case 14 Front Case 16 Inner Case 18 Back Case 70 Cutter 78, 78 _I Spring Part (Elastic Part) 81 Issue Button (Operation Button) 81b Rear Surface 82 ETC Button (Operation Button) 83 Blank Button (Operation Button) 84 FEED Button (operation button) 90 Spacer 91a Front surface 92, 92 _I , 92 _II accommodation part 95, 95 _I Projection part (stopper part) 100 Switch board (board) 110 Tact switch (switch) 120 Illumination lamp (lighting) 200 Taximeter R1 Roll paper (paper)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tetsuji Takamori             1-7-1 Yokoi Shimada City, Shizuoka Prefecture Yazaki Keiki Co., Ltd.             Inside the company F-term (reference) 2C061 AP10 CQ02                 5G019 AM55 AN17 CX01 CX05 CY02                       CY43 CZ19 JJ02 JJ07 JJ14                       KK02 KK23 LL02 LL10 LL23                       SY15

Claims (8)

[Claims] 1. A switch, a spacer provided with an accommodating portion for accommodating the switch, and an operation button for pressing the switch, and a stopper portion for stopping the pressing of the operation button is formed on the spacer. The switch mounting structure is characterized by 2. The switch mounting structure according to claim 1, wherein the stopper portion is formed as a protrusion on the front surface of the spacer from the front surface of the spacer toward the rear surface of the operation button. . 3. The switch mounting structure according to claim 1, wherein a pair of the stopper portions are formed on the spacer in correspondence with one operation button. 4. The switch according to claim 1, wherein the plurality of stopper portions are arranged in parallel with the spacer along a direction in which the plurality of operation buttons are arranged. Mounting structure. 5. The operation button is attached to a case,
The switch is attached to a substrate located behind the operation button and fixed in the case, and the switch is attached to the front side of the substrate corresponding to the attachment position of the operation button with respect to the case. The switch mounting structure according to any one of claims 1 to 4, wherein: 6. The spacer is white, and the spacer also serves as a reflector that surrounds an illumination that illuminates the operation button with light. Switch mounting structure described in. 7. A cutter for cutting out a sheet, a substrate on which the switch is mounted, and a case to which the substrate is fixed are provided, and the cutter is provided with an elastic portion that is pressed against the operation button. By assembling the operation button, the cutter, the spacer, and the substrate into the case, the elastic portion of the cutter moves the operation button from the inside to the outside of the case. The switch mounting structure according to any one of claims 1 to 6, wherein the switch mounting structure is pressed so as to be elastically recoverable. 8. The switch mounting structure according to claim 1, wherein the switch mounting structure is applied to a taximeter printer.