JP2001071606A - Door lock and roller press device and printer device - Google Patents

Abstract

(57) [Problem] It is difficult to simplify the configurations of a door lock and roller pressing device and a printer device. In a door lock and roller pressing device and a printer device, a door lock mechanism that rotates in a first rotation direction in response to a closing operation of a door portion and locks the door portion in a closed state, and a door lock mechanism for the door portion. In response to the closing operation, the roller is rotated in a second rotation direction opposite to the first rotation direction, so that the roller is pressed between the roller pressing mechanism and the door lock mechanism and the roller pressing mechanism. An elastic member for urging the lock mechanism in the first rotation direction and urging the roller pressing mechanism in the second rotation direction is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock and roller pressing device, and a printer device, for example, a print medium (printing medium) formed by winding a printing medium such as a band-shaped printing paper or a printing film into a roll. (Hereinafter, this is called a roll-shaped print medium).

[0002]

2. Description of the Related Art Heretofore, as this type of printer, for example, there is a printer configured as shown in FIGS. In the printer 1, a door 3 is provided at the front of the housing 2 so as to be openable and closable, and is rotatably supported inside the door 3 by a bearing (not shown) in a direction parallel to the arrow y ₁ and rotatably. A platen 5 and a paper tray 4 are provided.

In the printer 1, the roll-shaped print medium 6 is placed in the paper tray 4 with its leading end pulled out to the outside of the door 3 via the platen 5, and the rear door 3 is closed. The housing 2 is loaded inside the housing 2.

Inside the housing 2, a U-shaped door lock arm 7 having both ends in the direction of arrow y ₁ bent in parallel with the left and right inner wall surfaces of the housing 2, respectively, is used as a fulcrum shaft. 8 is provided so as to be rotatable around the center.

In this case, the rear end of each of the bent portions 7A and 7B of the door lock arm 7 is urged downward by a first compression coil spring 9, and is normally fixed to a door opening / closing lever (not shown). While being located at the rotation position regulated by the stopper 10 provided, the rotation can be made in the direction of arrow a about the fulcrum shaft 8 as necessary.

Further, each bent portion 7 of the door lock arm 7
A tapered portion 7C and a notch 7D are provided at the distal ends of A and 7B, and tapered portions 7A and 7B of the bent portions 7A and 7B of the locking arm 7 are provided on the left and right outer surfaces of the door portion 3, respectively.
Lock shafts 11A and 11B are implanted corresponding to C respectively.

As a result, in the printer 1, when the user closes the door unit 3 from the state where the door unit 3 is opened as shown in FIG. 15, each locking shaft of the door unit 3 is used as shown in FIG. 11A, 11B corresponding bent portion 7A of the door locking arm 7, respectively, in contact with the tapered portion 7C of 7B, this after these locking shaft 10A, 10B of these bent portions 7A, 7B of the downward (arrow z ₁ When the door 3 is closed, the tapered portion 7C of the bent portion 7A, 7B is slid while being pushed down in the opposite direction (FIG. 17).
As described above, the locking shafts 11A and 11B are fitted into the notches 7D of the corresponding bent portions 7A and 7B, respectively, so that the door portion 3 can be locked in a closed state.

Inside the housing 2, a U-shaped roller pressing arm 12 having both ends in the direction of arrow y ₁ bent in parallel with the left and right inner wall surfaces of the housing 2, respectively, supports the fulcrum shaft 8. It is arranged rotatably as the center.

In this case, the rear end of each bent portion 12A, 12B of the roller pressing arm 12 is urged downward by the second compression coil spring 13, so that the door locking arm 7 is normally used. Each bending part 7A, 7B
While being located at the rotation position regulated by the stoppers 7E which are respectively bent, the rotation can be made about the fulcrum shaft 8 in the direction of the arrow a as necessary.

Each bending portion 1 of the roller pressing arm 12
A shaft 14 is rotatably and parallelly mounted on the platen 5 between the front ends of the paper trays 2A and 12B, and cutouts 4A and 4B are provided on the left and right outer surfaces of the paper tray 4 corresponding to the shafts 14, respectively. Have been.

As a result, in the printer 1, when the door portion 3 is closed from the open state as shown in FIG. 15, both ends of the shaft 14 in the longitudinal direction correspond to the notches 4A, 4B, the shaft 14 is pressed against the platen 5 when the door 3 is closed as shown in FIG.

[0012]

However, in the printer 1 having such a configuration, the first and second arms are provided for the door locking arm 7 and the roller pressing arm 12 as described above.
In this case, two compression coil springs 9 and 13 are required, and the configuration of the printer 1 as a whole becomes complicated and the assembling work becomes complicated.

In the printer 1 having such a configuration,
When changing the spring pressure applied to the door lock arm 7 or the roller pressing arm 12, the position where the first or second compression coil spring 9, 13 is applied is changed, or the first or second compression coil spring 9, It is necessary to take measures such as replacing the spring 13 with a spring having a different spring constant. However, since these must be performed individually, there is a problem that such maintenance work becomes complicated.

Further, in the conventional printer 1, as shown in FIGS. 18 and 19, a power switch 14 is provided on the front surface of the housing 2, and the power switch 14 is connected to the housing 2 via a connecting rod 15. It is connected to a main switch 17 mounted on an internal printed wiring board 16.

In this case, the connecting rod 15 is
A first portion formed by bending a part of the straight portion 15A downward at the rear end of the straight portion 15A located along the upper left corner inside.
Together with the bent portion 15B is provided, its lower end the first second bent portion 15C bent portion 15B of the right formed by bent (arrow y ₁ reverse) is provided, and the tip before The third bent portion 15D formed by bending the second bent portion 15C downward in the portion is provided.

The third bent portion 15D is connected to the operation shaft 18 of the main switch 17, and the main switch 1 is depressed by operating the power switch 14.
7 can be turned on / off.

However, according to the configuration of the conventional connecting rod, as shown in FIGS. 18 and 19, since the second bent portion 15C of the connecting rod 15 is located at the front of the switch 17, printed wiring is not provided. There is a problem that the tall electronic components cannot be mounted on this portion of the board 16 and the printed wiring board 16 cannot be used effectively.

The present invention has been made in view of the above points, and an object of the present invention is to propose a door lock and a roller pressing device and a printer which can simplify the configuration.

[0019]

According to the present invention, there is provided a door lock and roller pressing device which rotates in a first rotational direction in response to a closing operation of a door to close the door. A door lock mechanism for locking the door in a closed state, a roller pressing mechanism for pressing the roller against the platen by rotating in a second rotation direction opposite to the first rotation direction in response to the closing operation of the door portion, and a door. An elastic member is provided between the lock mechanism and the roller pressing mechanism, and biases the door lock mechanism in the first rotation direction and biases the roller pressure mechanism in the second rotation direction.

As a result, in this door lock and roller pressing device, one elastic member can apply a rotational force in the first or second rotation direction to each of the door lock mechanism and the roller pressing device.

According to the present invention, in a printer apparatus, a door lock mechanism that rotates in a first rotation direction in response to a closing operation of a door unit and locks the door unit in a closed state, and a printing medium on a platen. A roller pressing mechanism for rotatably holding a roller for winding and rotating in a second rotation direction opposite to the first rotation direction in response to a closing operation of the door portion, thereby pressing the roller to a platen; An elastic member is provided between the door lock mechanism and the roller pressing mechanism to urge the door locking mechanism in the first rotation direction and to urge the roller pressing mechanism in the second rotation direction.

As a result, in this printer device, a rotational force in the first or second rotational direction can be applied to each of the door lock mechanism and the roller pressing mechanism by one elastic member.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

(1) Configuration of Printer Device According to the Present Embodiment In FIG. 1, reference numeral 20 denotes a printer according to the present embodiment as a whole.
And an operation panel 2 provided with a plurality of operation switches 23
4 are provided.

A door is provided on the front surface of the housing 21 so as to be openable and closable, avoiding the power switch 22 and the operation panel 24, and to be urged in the opening direction by a spring (not shown) attached to the fulcrum shaft. A paper tray 26 and a platen 28 rotatably supported by bearings 27A and 27B are provided inside the door 25.

Thus, in the printer 20, the roll-shaped print medium 6 is placed in the paper tray 26 with the leading end thereof pulled out to the outside of the door 25 via the platen 28 so that the rear door 25 is closed. And can be loaded inside the housing 21.

On the other hand, as shown in FIG. 2, a mechanical mechanism 29 is housed on the front side, and a power supply circuit, a signal processing circuit, and / or a control circuit are formed on the rear side. A plurality of printed wiring boards 30 are stored.

In this case, as shown in FIG. 3, the mechanical mechanism 29 is provided with a platen drive for rotatingly driving the platen 28 to a chassis mechanism 34 formed of a pair of side chassis 31A, 31B, a back chassis 32 and a top chassis 33. Part 35, a head part 37 having a line-type thermal head 36 attached to the lower surface, and a door part 25 locked in a closed state, and a press roller 38 connected to a platen 28.
The door lock and platen crimping portion 39 for crimping the thermal head 36 of the head portion 37 to the platen 2 when necessary.
8 and the door lock and platen crimping section 39
, And a cutter (not shown) for separating the roll-shaped print medium 6 sent after printing are provided at predetermined positions.

In the printing mode, the driving mechanism 40 drives the thermal head 36 of the head 37 under the control of a control circuit formed on the printed wiring board 30 in a printing mode. While being pressed against the platen 28 via the print medium 6, in this state, each time one line of printing is performed based on the printing data given to the head unit 37 from the signal processing circuit formed on the printed wiring board 30, The platen driving unit 35 is connected to the platen 2
8 is rotated so that the roll-shaped print medium 6 is sent out one line at a time.

When the printing of one sheet is completed, the mechanical mechanism section 29 rotates the platen 28 by the platen drive section 35 under the control of the above-described control circuit, thereby causing the roll-shaped print medium 6 to rotate. Is sent out by a predetermined amount. In this way, the printer 20 can print an image based on the print data on the roll-shaped print medium 6.

In the case of this embodiment, FIGS.
As shown in (1), the power switch 22 is connected to a main switch 46 on the printed wiring board 30 housed in the housing 21 via a connecting rod 45.

In this case, the connecting rod 45 is
A first bent portion 45B formed by bending a part of the linear portion 45A downward is provided at the rear end of the linear portion 45A located along the upper left corner of the inside 1 and the lower end thereof has the first bent portion 45B. second bent portion 45C is provided which is formed by bending the first bent portion 45B in the right direction (arrow y ₂ and backward), and the second bent portion 45C bent downward at its right end And a third bent portion 45D.

An operation shaft 47 of the main switch 46 mounted on the printed wiring board 30 is provided on the third bent portion 45D.
The main switch 46 can be turned on / off in conjunction with the power switch 22 by pressing the power switch 22. Thereby, in this printer 20, the printed wiring board 30
The space in front of the main switch 46 can be effectively used without being obstructed by the connecting rod 45.

(2) Detailed Configuration of the Mechanical Mechanism 29 In the platen driving section 35 of the mechanical mechanism 29, as shown in FIGS.
, And a gear 52 is attached to an output shaft 51 of the stepping motor 50.

The gear 52 includes a gear 53 rotatably attached to one side chassis 31A, a pulley 54 integrally formed with the gear 53, a timing belt 55, and a fulcrum shaft of the door 25 (and the paper tray 26). A pulley 57 rotatably fitted in the gear 56, a gear 58 integrally formed with the pulley 57, a gear 59 rotatably arranged on the door 25, a pulley 60 integrally formed with the gear 59, and a timing belt 61. And a pulley 63 provided integrally and coaxially with the platen 28 via a speed reduction mechanism 62 composed of

Thus, in the platen driving section 35, the platen 28 can be rotationally driven in a desired rotational direction by a desired angle via the speed reduction mechanism section 62 in response to the rotation of the stepping motor 50. I have.

As shown in FIG. 7, the thermal head 36 is mounted on the front end of the lower surface of the heat sink 70 via a thermal head mounting member 71, as shown in FIG.

In this case, at the rear of the heat sink 70, a pair of bent portions 70A and 70B which are formed by bending a part of the heat sink 70 downward are formed.
A shaft 72 is rotatably bridged between 0A and 70B,
Further, a groove (hereinafter, referred to as an alignment groove) 72A is provided around the center of the shaft body 72.

The rear chassis 32 is provided with a head support portion 32A which is a bent portion formed by bending a part of the rear chassis 32 in the forward direction (arrow x ₂ ).
A notch 32AX is formed in the head support 32A so as to correspond to the alignment groove 72A of the shaft 72 of the head 37.

The rear chassis 32 further includes a head 3
The head support arms 74A and 74B are rotatably mounted on the fulcrum shafts 73A and 73B, respectively, corresponding to the respective ends of the heat sink 70 in the width direction.

The head portion 37 has the centering groove 72A of the shaft body 72 fitted into the notch 32AX of the head support portion 32A, and each end of the lower surface of the heat sink 70 has a corresponding one of the corresponding head support arms 74A, 74B. The head support arm 7 is mounted on the front part by a compression coil spring 75A, 75B disposed between the top chassis 33 and the heat sink 37 as shown in FIG.
It is housed inside the housing 21 so as to be pressed against 4A, 74B.

Thus, in this printer 20,
Each head support arm 74A, can be maintained by providing a downward pressure (arrow z ₂ direction opposite) to the rear of 74B in a state of being separated a thermal head 36 from the platen 28, further releasing the pressure By doing so, the thermal head 36 can be pressed against the platen 28 by the elastic force of the compression coil springs 75A and 75B.

On the other hand, as shown in FIGS. 8 to 10, a lock arm 80 and a roller arm 81 each having a U-shape as a whole, a press roller 38 and a pair of And the compression coil springs 82A and 82B.

In this case, the lock arm 80 has bent portions 80A and 80B at both ends in the width direction, respectively.
The rear portions of the bent portions 80A, 80B are respectively attached to the corresponding side chassis 31A, 31B by fulcrum shafts 83A, 83B.
The housing 21 is rotatably mounted via
It is arranged inside.

Each bending portion 80A of the lock arm 80,
Tapered portions 80AX and 80BX are provided at the distal end of 80B corresponding to the locking shafts 84A (FIG. 1) and 84B (FIG. 8) planted on the corresponding side surfaces of the door portion 25, respectively. Notches 80AY and 80BY are provided on the rear side of the sections 80AX and 80BX.

Further, a lever 80CX, which is formed by bending a part of the bridging portion 80C backward, is provided substantially at the center of the bridging portion 80C bridging between the bending portions 80A and 80B of the lock arm 80. Thus, by pushing the lever 80CX forward (arrow x ₂ ), the lock arm 80 can be rotated as a whole around the fulcrum shafts 83A and 83B in the direction opposite to the arrow b. I have.

On the other hand, the roller arm 81 has bent portions 81A and 81B formed at both ends in the width direction by bending in parallel with the corresponding bent portions 80A and 80B of the lock arm 80, respectively. Bends 81A, 8
1B are the corresponding bent portions 80 of the lock arm 81, respectively.
A, 80B, which are rotatably fixed about fulcrum shafts 85A, 85B, and which are normally bent portions 81A, 81B.
Of the side chassis 31A, 31B are disposed inside the housing 21 so as to be supported by projections 31AX, 31BX formed by bending a part of the side chassis 31A, 31B inward.

Further, each bent portion 81A of the roller arm 81,
A pair of bearings 81 formed by bending a part of the bridging portion 81C upward is provided on the bridging portion 81C bridging between the bridges 81B.
CX and 81CY are provided through a predetermined distance,
A roller arm 80 is rotatably disposed so as to be rotatably supported by the bearings 81CX and 81CY.

Further, each bent portion 80 of the lock arm 80
A, 80B and corresponding bends 81 of roller arm 81
The compression coil springs 82A and 82B are bridged between A and 81B, and thus these compression coil springs 82A and 82B
The elastic force of 82B always applies a rotational force in the direction of arrow b about the fulcrum shafts 83A and 83B to the lock arm 80, and the arrow always about the fulcrum shafts 85A and 85B to the press arm 81. The rotation force in the c direction can be given.

In the door lock and press roller pressing portion 39, when the door portion 25 is pressed and closed by the user, first, the lock shafts 84A and 84B of the door portion 25 are moved to the position shown in FIG. As described above, the front ends of the tapered portions 80AX and 80BX of the corresponding bent portions 80A and 80B of the lock arm 80 respectively contact the rear door 2
As the lock 5 is closed, these locking shafts 84A,
84B are lock arms 8 as shown in FIG.
0 of the corresponding bent portion 80A, the tapered portion 80AX While depressing 80B in the direction opposite to the arrow z _2, slides on 80BX.

When the locking shafts 84A, 84B reach the notches 80AY, 80BY of the lock arm 80, the lock arm 80 is moved by the arrow b (FIG. 10B) by the elastic force of the compression coil springs 82A, 82B. ) And the lock shafts 84A and 84B are
0 notches 80AY and 80BY, and lock shafts 84A and 84B are formed in the notches 80AY and 80BY.
, The door portion 25 can be locked in a closed state.

At this time, the roller arm 80 is fixed to the bent portion 8 of the lock arm 81 by the lock shafts 84A and 84B.
When the first chassis 1A and 81B are pushed down, the bent portions 80A and 80B are moved in response to the downward depression.
The projections 31AX and 31BX of the A and 31B are used as fulcrums, and the fulcrum shafts 85A and 85B are used as points of force to rotate in the direction opposite to the arrow c (or the press roller 38 moves along the surface of the roll-shaped print medium 6). 11B, the bent portions 80A and 80B of the roller arm 80 rotate in the direction of the arrow c.

Each locking shaft 8 of the rear door 25
4A and 84B fit into the notches 80AY and 80BY of the corresponding bent portions 81A and 81B of the lock arm 81, respectively, and when these bent portions 81A and 81B rotate in the direction of the arrow b, the roller arm 80 Bend 8
Reference numerals 0A and 80B serve as fulcrums about the projections 31AX and 31BX of the side chassis 31A and 31B, and fulcrum shafts 85A and 85B.
By rotating in the direction of arrow c with 5B as a point of force, the press roller 38 returns to the original position as shown in FIG. 11C and is pressed against the platen 28 by the elastic force of the compression coil springs 82A and 82B. I have.

Further, in the door lock and roller pressing portion 39, when the lever 80CX of the lock arm 80 is pushed forward from the state where the door portion 25 is closed as described above,
As shown in FIG. 12A, when the lock arm 80 is rotated forward as a whole, the lock shafts 84A and 84B of the door portion 25 are notched 80AY of the corresponding bent portions 80A and 80B of the lock arm 80. 80BY, and then the locking shafts 84A, 84B are moved to the tapered portions 8 of the corresponding bent portions 80A, 80B of the lock arm 80.
The door portion 25 is rotated by the elastic force of the above-mentioned spring (not shown) so as to slide on 0AX and 80BX,
The door unit 25 can be opened.

At this time, the bent portions 81A and 81B of the roller arm 81 are rotated by the rotation of the lock arm 80 so that the protrusions 31A of the side chassis 31A and 31B are formed.
X and 31BX are used as fulcrums, and the fulcrum shafts 83A and 83B are used as fulcrums to rotate in the direction opposite to the arrow c so that the press roller 38 is separated from the platen 28 so as not to hinder the rotation of the door 25. It has been done.

In this embodiment, spring hooks 81AX and 81BX are provided at the lower rear ends of the bent portions 81A and 81B of the roller arm 81, and the bent portions 80A and 80B of the lock arm 80 are provided. At the rear bottom near the hole of a pair of spring hook (hereinafter referred to as a spring hook hole) 80AX ₁ and 80AX _2, 80BX ₁ and 8
0BX ₂ are arranged side by side in parallel with the direction of the arrow z _2, and the spring hook portions 81AX, 81BX of the roller arm 81 and one spring hook hole 80AX ₁ or 80 of the lock arm 80 are provided.
Each of the compression coil springs 82A and 82B is arranged so as to span AX ₂ , 80BX ₁ or 80BX ₂ .

Thus, in the door lock and roller pressing portion 39, the mounting positions of the compression coil springs 82A and 82B with respect to the lock arm 80 can be freely changed, and the mounting positions can be changed by changing the mounting positions. And the spring pressure for roller pressing can be changed at once.

On the other hand, in the driving mechanism section 40, FIG.
As shown in FIG. 5, a motor 91 is fixed to the back chassis 32, and a gear 91 attached to an output shaft of the motor 90 includes a timing belt 92 and a plurality of gears 93 to 93.
The gears 98 are in mesh with the gears 98 sequentially.

At this time, an egg-shaped cam 99 is integrally formed with the gear 98, and thus, by driving the motor 90, the cam 99 can be driven to rotate.

As a result, in the drive mechanism 40, the lever 80CX of the lock arm 80 of the door lock and roller pressing portion 39 is normally moved forward by the cam 99 as shown in FIGS. 11A to 11C. while positioning the cam 99 so as not to press, required at the time of driving the motor 90 rotates the cam 99 in the arrow x ₂ direction of the lock arm 80 of the door lock and the roller crimping portion 39 lever 80
By pressing the CX forward by the cam 99,
The door unit 25 can be opened.

Further, the gear 98 is fixed to a shaft 100 through which the gear 98 is inserted, so that the shaft 100 can be driven to rotate integrally with the gear 98. And at both ends of this shaft 100,
In correspondence with the cam receivers 74AX and 74BX provided at the rear ends of the head support levers 74A and 74B, respectively, fan-shaped cams 101A and 101B having a center angle of approximately 90 ° as shown in FIG. Fixed.

As a result, in the drive mechanism 40, the cams 101A, 101A,
The flat portions 101AX, 101BX of the 1B are cam receivers 74AX, 74B of the head support levers 74A, 74B, respectively.
The thermal head 36 of the head unit 37 is pressed against the platen 28 so as to contact with the X. At other times, the large diameter portion 1 of the cams 101A and 101B is used.
The peripheral side surfaces of 01AY and 101BY are connected to the head support lever 74.
The head portion 37 can be supported in a state where the thermal head 36 is separated from the platen 28 by bringing the cam receiving portions 74AX and 74BX of the A and 74B into contact with each other.

(3) Operation and Effect of the Present Embodiment In the above configuration, in the printer 20,
When the door 5 is closed from the open state, the locking shafts 84A and 84B of the door 25 are locked by the door lock and roller pressing part 3.
9 corresponding bending portions 80A, 80B of the lock arm 80
Of the lock arm 80 and the notch 80 of the corresponding bent portion 80A, 80B of the lock arm 80.
When it reaches AY and 80BY, the compression coil spring 8
The lock arm 80 rotates in the direction of arrow b by the elastic force of 2A, 82B, and the locking shafts 84A, 84B fit into the corresponding notches 80AY, 80BY, and the notches 8
The lock shafts 84A and 84B are held at 0AY and 80BY, so that the door unit 25 is locked in a closed state.

At this time, the roller arms 81 of the door lock and roller pressing portion 39 are compressed by the compression coil springs 82A, 82A.
The press roller 38 is pressed against the platen 28 by rotating in the direction of arrow c by the elastic force of B.

Accordingly, in this printer 20, only two compression coil springs 82A and 82B are required in total for the door lock and for the pressing of the press roller 38 to the platen 28, and the related art described with reference to FIGS. Configuration is simplified as compared to the printer 1 of
Assembly can be facilitated.

In the printer 20, the spring pressure for door locking and the spring pressure for pressing the press roller 38 against the platen 28 only by changing the position where the compression coil springs 82A and 82B are applied to the lock arm 80 are changed. Can be changed in a lump, so that the operation of adjusting the spring pressure is easy, and the maintainability can be improved accordingly.

According to the above configuration, the compression coil springs 82A, 82B are provided between the lock arm 80 and the roller arm 81.
And a spring pressure for pressing the press roller 38 against the platen 28 is applied to the roller arm 81, so that the lock arm 80 is provided with a spring pressure for locking the door. The configuration can be simplified, and a printer that can simplify the configuration can be realized.

(4) Other Embodiments In the above-described embodiment, a case has been described in which the present invention is applied to the printer 20 which uses the roll-shaped print medium 6 as a print medium. However, the present invention is not limited to this, and can be widely applied to various other printer devices.

In the above-described embodiment, the first rotation direction (the direction of the arrow b) responds to the closing operation of the door 25.
The lock arm 80 serving as a door lock mechanism that locks the door unit 25 in a closed state by rotating the lock arm 80 as shown in FIGS. 8 to 10 has been described. However, the present invention is not limited to this. In addition, various configurations can be widely applied.

Further, in the above-described embodiment, in response to the closing operation of the door portion 25, the door 25 is rotated in the second rotation direction (the direction of the arrow c) opposite to the first rotation direction (the direction of the arrow b). 8 to 10 show a roller arm 81 as a roller pressing mechanism for pressing the roller 38 against the platen 28.
However, the present invention is not limited to this, and various other configurations can be widely applied.

In this case, in the above-described embodiment, the roller arm 81 as the roller pressing mechanism is used.
Has been described so as to be rotatable on the bent portions 80A and 80B of the lock arm 80, but the present invention is not limited to this.
May be rotatably attached to places other than the bent portions 80A and 80B.

Further, in the above-described embodiment, the lock arm 80 is urged so as to generate a rotational force in the direction of arrow b, and the roller arm 81 is pressed against the arrow c.
Although the case where the compression coil springs 82A and 82B are applied as the elastic members for urging so as to generate the rotational force in the direction has been described, the present invention is not limited to this, and the spring or the rubber other than the compression coil spring may be used. Various other elastic members can be widely applied.

Further, in the above-described embodiment, the mounting positions of the compression coil springs 82A and 82B with respect to the lock arm 80 can be changed (that is, the spring hook holes 80A).
X ₁ and 80AX _2, it has dealt with the case where the 80BX ₁ and 80BX ₂ to provide a plurality) so that the present invention is not limited to this, the compression coil spring 82A against the roller arms 81, so that it can also change the mounting position of the 82B You may do it.

[0074]

As described above, according to the present invention, in the door lock and roller pressing device, the door rotates in the first rotational direction in response to the closing operation of the door and locks the door in the closed state. A door locking mechanism; a roller pressing mechanism for pressing the roller against the platen by rotating in a second rotation direction opposite to the first rotation direction in response to the closing operation of the door portion; a door locking mechanism and a roller pressing mechanism And an elastic member that urges the door lock mechanism in the first rotation direction and urges the roller pressing mechanism in the second rotation direction by being provided between the mechanisms. First door lock mechanism and first roller press mechanism
Alternatively, a door lock and a roller pressing device that can apply a rotational force in the second rotational direction and thus can simplify the configuration can be realized.

Further, according to the present invention, in a printer apparatus, a door lock mechanism that rotates in a first rotation direction in response to a closing operation of a door and locks the door in a closed state, Roller press mechanism for rotatably holding a roller for winding the roller around, and rotating in a second rotation direction opposite to the first rotation direction in response to the closing operation of the door portion, thereby pressing the roller to the platen. And an elastic member which is bridged between the door lock mechanism and the roller pressing mechanism to urge the door locking mechanism in the first rotation direction and to urge the roller pressing mechanism in the second rotation direction. Thereby, the first locking member and the roller pressing mechanism are each provided with the first elastic member.
Alternatively, it is possible to apply a rotational force in the second rotational direction, and thus to realize a printer device whose configuration can be simplified.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a configuration of a printer according to an embodiment.

FIG. 2 is a schematic perspective view showing the internal configuration of the printer.

FIG. 3 is an exploded perspective view illustrating a configuration of a mechanical mechanism.

FIG. 4 is a schematic perspective view showing a configuration of a connecting rod.

FIG. 5 is a side view showing a configuration of a connecting rod.

FIG. 6 is a side view illustrating a configuration of a platen driving unit.

FIG. 7 is a schematic perspective view showing a configuration of a head unit.

FIG. 8 is a schematic perspective view showing a configuration of a door lock and a roller pressing portion.

FIG. 9 is a top view showing a configuration of a door lock and a roller pressing portion.

FIGS. 10A and 10B are a front view and a side view showing a configuration of a door lock and a roller pressing portion.

FIG. 11 is a schematic side view for explaining an operation of a door lock and a roller press-fitting unit accompanying a closing operation of the door unit.

FIG. 12 is a schematic side view for explaining an operation of a door lock and a roller crimping portion accompanying an opening operation of the door portion.

FIG. 13 is a schematic perspective view showing a configuration of a drive mechanism.

FIG. 14 is a schematic side view for explaining pressure bonding and separation of a thermal head from a platen.

FIG. 15 is a schematic side view showing a configuration of a door lock and a roller pressing portion in a conventional printer.

FIG. 16 is a schematic side view showing a configuration of a door lock and a roller pressing portion in a conventional printer.

FIG. 17 is a schematic side view showing a configuration of a door lock and a roller pressing portion in a conventional printer.

FIG. 18 is a schematic perspective view showing a configuration of a connecting rod in a conventional printer.

FIG. 19 is a schematic perspective view showing a configuration of a connecting rod in a conventional printer.

[Explanation of symbols]

20 printer, 25 door part, 28 platen, 31A, 31B side chassis, 31AX, 3
1BX Projecting portion, 38 Press roller, 39 Door lock and roller crimping portion, 45 Connecting rod, 80
Lock arm, 81A, 81B ... bending part, 80AX,
80BX ... taper part, 80AY, 80BY ... notch, 80CX ... lever, 81 ... roller arm, 81
A, 81B... Bending portion, 82A, 82B.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Akio Takizawa 3-9-17 Nishigotanda, Shinagawa-ku, Tokyo Sony Engineering Co., Ltd. F-term (reference) 2C061 AQ04 AS06 AS14 BB11 BB30 BB33 2C064 CC02 CC06 EE01 EE05 EE15

Claims (6)

[Claims] 1. A door lock and roller pressing device for locking a door portion of a printer which can be freely opened and closed in a closed state and pressing a roller for winding a loaded printing medium around a platen against the platen. A door lock mechanism that rotates in a first rotational direction in response to the closing operation of the door unit and locks the door unit in a closed state; and holds the roller rotatably and closes the door unit. A roller pressing mechanism that presses the roller against the platen by rotating in a second rotation direction opposite to the first rotation direction in response to the first rotation direction, and a bridge between the door lock mechanism and the roller pressing mechanism. And an elastic member for urging the door lock mechanism in the first rotation direction and urging the roller pressing mechanism in the second rotation direction. Door lock and the roller pressing device according to symptoms. 2. The apparatus according to claim 1, wherein the elastic member is stretched between the door lock mechanism and the roller pressing mechanism so that a mounting position with respect to the door lock mechanism and / or the roller pressing mechanism can be freely changed. The door lock and roller pressing device according to claim 1. 3. The apparatus according to claim 1, wherein the elastic member is a compression coil spring. 4. A door provided to be freely openable and closable, a platen provided on the door, and a first rotating direction in response to a closing operation of the door, thereby closing the door. A door lock mechanism for locking the loaded printing medium around the platen, and a second roller opposed to the first rotation direction in response to the closing operation of the door portion. A roller pressing mechanism for pressing the roller against the platen by rotating in the rotation direction of the roller, a door lock mechanism and a roller pressing mechanism, and the door locking mechanism is attached to the first rotation direction. And a resilient member for urging the roller pressing mechanism in the second rotational direction. 5. The apparatus according to claim 1, wherein the elastic member is stretched between the door lock mechanism and the roller pressing mechanism so that a mounting position with respect to the door lock mechanism and / or the roller pressing mechanism can be freely changed. The printer device according to claim 4, wherein 6. The printer device according to claim 4, wherein said elastic member comprises a compression coil spring.