JP2527611Y2 - Head-base lifting and rotating device for manual printer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a head base elevating and rotating device in a manual printer for printing at a desired position on a sheet on a table.

[Conventional technology]

In a conventional manual printer, a lifting mechanism and a rotating mechanism of a head base that supports a print head constitute a separate mechanism.

[Problems to be solved by the invention]

Therefore, the elevating mechanism and the rotating mechanism of the head base become complicated, and there is a defect that the structure becomes large.

The purpose of the present invention is to solve the above problems.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a casing 2 having a bottom portion suitable for mounting on a mounting surface, and projecting forward of the casing 2 and having at least one
A base 24 movably supported in the axial direction and having a space opened in the center in the vertical direction, and rotatably supported by the base 24, and formed by moving the base 24 along the one axial direction; A roller 36 adapted to be rotated by friction with a screen, a head base 28 disposed in a space of the base 24 and having a print head 66 disposed on a lower surface, and detachably attached to the head base 28 And an ink ribbon cassette for supplying an ink ribbon to a printing surface of the print head 66.
48, and when the head base 28 is lowered,
An ink ribbon drive shaft 54 provided on the head base 28 so that an ink ribbon drive shaft 54 provided on the head 28 is linked with a roller 36 provided on the base 24 and rotates in conjunction with the rotation of the roller 36; On both sides of one side of the head base 28,
A rotating shaft 30 protruding on a coaxial line and an elongated hole 26 provided on both sides 24a, 24b of the base 24 for receiving the rotating shaft 30 and guiding the rotating shaft 30 in a lifting / lowering manner with respect to a mounting plane; A spring 32 for urging one side of the head base 28 in the ascending direction with respect to the base 24, and the base 24 for elastically supporting the lower surface of the other side of the head base 28 so as to be able to descend. And a stopper 40 provided.

[Action]

In the above configuration, when the head base 28 is pressed downward, the head base 28 descends along the elongated hole 26, the ink ribbon drive shaft 54 engages with the roller 36 provided on the base 24, and the print head 66 Touch the screen through the ribbon. In this state, when the head base 28 is manually moved in the horizontal direction with respect to the screen, the roller
The ink ribbon drive shaft 54 rotates in conjunction with the rotation of 36, the ink ribbon is supplied to the print head 66, and printing is performed on the screen. When the pressing force against the head base 28 is released, the head base 28 is guided by the elasticity of the spring 32 into the elongated hole 26 and rises, the print bed 66 is separated from the screen, and the ink ribbon drive shaft 54 and the roller 36 are engaged. Is released. In this state, when a rotational force is applied to the head base 28 about the rotation axis 30, the head base 28 is inclined to rotate vertically about the elongated hole 26, the lower surface of the head base 28 is opened, and the ink ribbon cassette 48 is This is a state where replacement can be easily performed.

〔Example〕

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

Reference numeral 2 denotes a casing, and a guide rail 4 is provided on a bottom wall of the casing.
Is fixed. The guide rail 4 is arranged near the front edge of the casing 2 and is set parallel to the front edge. An opening 6 is formed in the front wall 2a of the casing 2 along the entire length of the front wall 2a in the width direction along the front wall 2a. Reference numeral 8 denotes a cursor, which is movably connected to the rail 4 via four rollers 10. The cursor 8 is loosely fitted in the opening 6, and its front edge is arranged to protrude forward of the casing 2. A pair of rope pulleys 12 and 14 are rotatably supported on the bottom wall of the casing 2, and an endless wire rope 16 is hung over these rope pulleys 12 and 14 with an appropriate tension. I have. The cursor 8 is connected to one of parallel portions of the wire rope 16 facing each other. An input shaft of a pulse encoder 18 is connected to a rotation support shaft of the rope pulley 12. A controller (not shown) is built in the casing 2, and the controller and a connector 20 provided on the cursor 8 are connected by a tape wire 22. Reference numeral 24 denotes a base, which is fixed to a rising portion of the cursor 8. A long slot 26 extending vertically is provided in both side frames 24a and 24b of the base 24. A head base 28 is loosely fitted in a space opened in the vertical direction of the base 24, and a rotating shaft 30 is provided coaxially with a front portion of both side frames of the head base 28 so as to protrude therefrom. Reference numeral 30 is slidably fitted in the elongated hole 26. The rotation shaft is urged upward by the spring 32 supported by the base 24. Rollers 34, 36, 38 (one roller is not shown) are rotatably supported in four directions of the base 24. A pair of stoppers 40 and 42 are supported on one rising wall of the base 24 so as to be movable in the vertical direction, and the stoppers 40 and 42 are urged in the horizontal direction by a spring 44. The head base 28 has the stopper
An engagement surface 46 is formed corresponding to 40 and 42. The head base 28 is provided with a cassette supporting portion including a mounting surface 50 and a regulating plate 52 for detachably supporting the ink ribbon cassette 48. An ink ribbon drive shaft 54 is rotatably supported on the regulating plate 52. A take-up shaft 56 is fixed to one of the drive shafts 54, and a gear 58 is fixed to the other. A gear 60 is rotatably supported on the head base 28, and the gear 60 meshes with the gear 58. Reference numeral 62 denotes a gear rotatably supported by the base 24. The gear 62 faces below the gear 60 at a predetermined interval. An endless belt 64 is stretched between the gear 62 and the roller 36 so that the rotational force of the roller 36 is transmitted to the gear 62. Reference numeral 66 denotes a thermal print head, and a bracket 68 fixed to the thermal print head is rotatably supported by a shaft 70 on the head base 28. The head 66 is
A spring 72 urges the shaft 70 in the counterclockwise direction in FIG. A projecting piece 74 formed as a member integral with the thermal print head 66 is in elastic contact with a stopper 76 provided on the head base 28 side by the biasing force of the spring 72. The ink ribbon cassette 48 is provided with an ink ribbon take-up roller 78, an ink ribbon supply roller 80, and guide shafts 82, 83, 84, 85.
Has an ink ribbon 86 attached thereto. The ink ribbon 52 is formed with a fitting portion 48a for removably fitting the head base 28. The winding roller 78 is provided with a hole for receiving the winding shaft 56 and engaging the winding shaft 56 with the winding roller 78 in the rotation direction. The ink ribbon cassette 48 includes the head base
An insertion frame 48a is formed so that it can be detachably mounted on the cassette support portion 28. The print head 66 is connected to the controller via the tape wire 22, and the output end of the pulse encoder 18 is connected to the controller. The controller is configured so that print information can be input by operating a panel switch 90 provided on the upper surface of the casing 2 by a key or by inputting data from a host computer. 92 is a display unit. The head base 28 having the base 24 and the print head 66 constitutes the head unit 23.

 Next, the operation of the present embodiment will be described.

First, the operation of mounting the ink ribbon cassette 48 on the head base 28 will be described. The head base 28 is lifted by a manual operation, and the head base 28 is rotated clockwise about the elongated hole 26 as shown in FIG. 6 to incline the head base 28 by approximately 45 degrees with respect to the table surface. Due to the inclination of the head base 28, the lower part of the print head 66 is opened. In this state, the fitting portion 48a of the ink ribbon cassette 48 is inserted into the head base 28, and the portion 86a of the ink ribbon 86 exposed to the outside of the cassette is positioned on the lower surface of the print head 66 as shown in FIG. Cassette in state
48 in the direction of the regulating surface 52, and the bottom of the cassette 48 is regulated
Contact 52. In this state, the winding shaft 56 is engaged with the hole of the winding roller 78. Next, the head base 28 in FIG.
The head base rotates counterclockwise around the elongated hole 26
The engagement surface 46 of the head base 28 is placed on the stoppers 40 and 42 by the weight of the head base 28. In this state, the head base 28 is substantially horizontal with respect to the table surface, that is, the mounting surface.

Next, the case of printing on paper on the table will be described.

In advance, the panel key 90 is operated to input printing information to the controller. The casing 2 is placed at a desired position on the sheet on the table, and the drawing start switch is turned on. Next, the operator moves the cursor 8 leftward in FIG. 3 along the guide rail 24 to position it at the left end of the printing range. Next, the operator presses the head base 28 downward. With this pressing force, the head base 28 resists the elasticity of the springs 32 and 44, is guided by the elongated holes 26, and moves down in the direction perpendicular to the table surface until the gear 60 meshes with the gear 62. By lowering the head base 28,
The print head 66 has an ink ribbon 86
The head is pressed by the reaction force of the pressing force.
66 resists the elasticity of the spring 72, and in FIG.
It turns slightly clockwise. In this state, when the operator moves the head base 28 rightward in FIG. 3 along the guide rail 24, the rollers 34, 36 and 38 rotate clockwise in FIG. The rotation of the roller 36 is transmitted to a winding shaft 56 via gears 62, 60, 58 and an ink ribbon drive shaft 54,
The take-up roller 78 rotates. Due to the rotation of the roller 78,
The ink ribbon 86 is wound around a take-up roller 78, and the ink ribbon 86 is continuously supplied to the print head 66 in accordance with the movement of the head base 28 along the guide rail 4. On the other hand, the movement of the cursor 8 along the guide rail 4 is as follows.
The signal is converted into a pulse signal by the pulse encoder 18 and fed back to the controller. The controller controls the timing of the output print data of the print head 66 based on the pulse signal, and a predetermined print is performed by the print head 66 on the paper that the print head 66 contacts.

〔effect〕

According to the present invention, as described above, a rotation shaft is provided on the head base, and the rotation shaft is used for raising and lowering and rotation. Therefore, the structure can be simplified, and the overall size can be reduced. There is an effect.

[Brief description of the drawings]

Fig. 1 is a schematic external view, Fig. 2 is a plan view, Fig. 3 is a rear view, Fig. 4 is a side view, Fig. 5 is a side view, Fig. 6 is a side view, Fig. 7 is a rear view, 8 is a rear view, FIG. 9 is a rear view, and FIG. 10 is a rear view. 2 ... casing, 4 ... guide rail, 6 ... opening, 8 ... cursor, 10 ... rollers, 12, 14 ... rope pulley, 16 ... wire rope, 18 ... pulse encoder,
20 ... Connector, 22 ... Tape wire, 24 ... Base,
24a, 24b: Frames on both sides, 26: Slot, 28: Head base, 30: Rotating shaft, 32: Spring, 34, 36, 38: Roller,
40, 42… stopper, 44… spring, 46… engagement surface, 48a
... Insert frame, 48 ... Ink ribbon cassette, 50 ... Placement surface, 52 ... Regulation surface, 54 ... Ink ribbon drive shaft, 56 ...
Take-up shaft, 58 gear, 60 gear, 62 gear, 64 gear
Belt, 66: Thermal print head, 68: Bracket, 70: Shaft, 72: Spring, 74: Projection, 76: Stopper, 78: Ink ribbon take-up roller, 80: Ink ribbon supply Roller, 82, 84 …… Guide shaft, 86 …… Ink ribbon.

Claims (1)

(57) [Scope of request for utility model registration] 1. A casing 2 having a bottom portion suitable for mounting on a mounting surface, a casing projecting forward of the casing 2 and being supported by the casing 2 so as to be movable in at least one axial direction. A base 24 having a space opened in the up-down direction, and rotatably supported by the base 24;
A roller 36 adapted to rotate by friction with a screen by moving the base 24 along the one axis direction;
24, a head base 28 having a print head 66 disposed on the lower surface thereof, and an ink ribbon cassette 48 detachably mounted on the head base 28 and supplying an ink ribbon to a print surface of the print head 66. And the head base 28
Is lowered, the ink ribbon drive shaft 54 provided on the head base 28 is linked with the roller 36 provided on the base 24, and the ink provided on the head base 28 is rotated so as to rotate in conjunction with the rotation of the roller 36. A ribbon drive shaft 54 and a rotating shaft projecting coaxially on both sides of one side of the head base 28.
Both sides 24a, 24b of the base 24 that receive the rotary shaft 30 and the rotary shaft 30 and guide the rotary shaft 30 in an ascending and descending manner with respect to the mounting plane.
, A spring 32 for urging one side of the head base 28 in the ascending direction with respect to the base 24, and a lower surface of the other side of the head base 28 so as to be able to descend. A head base elevating / rotating device in a manual printer, comprising a stopper 40 provided on the base 24 for spontaneous support.