JPH0687257A - Electric numbering apparatus - Google Patents

Abstract

PURPOSE:To reduce power consumption with a simplified mechanism by decreasing necessary actions for character selection by installing movable latches which are engaged to character wheels and movable character selection cams having recessed parts which are positioned corresponding to the respective character wheels to disengage the latches from the character wheels selectively in sequence. CONSTITUTION:A character selection cam 14 is turned to disengage a latch 15 from a character wheel 10, so that the cam follower 15b of the latch 15 enters a recessed part 16 on the character selection cam 14 to disengage the engaging part 15a of the latch 15 from the engaging nail 10b of the character wheel 10. The character wheel 10 is turned in the A direction by an angle corresponding to the displacement from the end of the rotation of the character selection cam 14. The rotation of all the other character wheels 10 is stopped by the latches 15, and the engagement and disengagement with the nail 7a of the character wheel shaft 7 are repeated by a character spring 11 to produce a print 18. The character selection cam 14 is rotated again and a positioning part 19 stops at the position to lift the latch 15 for holding the character wheel 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic numbering device for electronically selecting arbitrarily set print data.

[0002]

2. Description of the Related Art Conventionally, as an electronic numbering device,
There has been proposed an apparatus that electronically sets and changes an arbitrary value with respect to the numbering for mechanically recording serial numbers.

[0003]

However, in the numbering having a mechanism for selecting the character ring of the number of digits in the electronic numbering device, the character selection operation is performed after the character ring once selected is reset after printing. Therefore, there is a waste in the character selection operation, and since the character selection solenoid has only the number of digits, the power consumption during character selection is large, and many dry batteries are required. There is a problem that expensive parts such as solenoids are required, the mechanism is complicated and the number of parts is increased.

The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to change only a necessary ring shape by a set amount to reduce power consumption as much as possible. At the same time, it is to provide a small, lightweight, and inexpensive electronic numbering device.

[0005]

In order to achieve this object, the electronic numbering device of the present invention displays an input means for setting and inputting data to be printed, and the data input by the input means. An electronic device having a display device, control means for changing a set value by a predetermined amount based on the input data, and printing means for printing the value set by the control means on an arbitrary object by a plurality of type wheels. In the numbering device, movable latches provided corresponding to each of the plurality of type wheels and engaging and disengaging with respect to the corresponding type wheels, and for selectively selectively disengaging each latch from the type wheels. It is provided with a movable character selection cam in which a concave portion is provided corresponding to each type wheel.

[0006]

The electronic numbering device of the present invention having the above-described structure corresponds to the type wheel to be changed by a predetermined amount by rotating the movable type selection cam provided separately for each type wheel with the recess corresponding to each type wheel. An arbitrary stamp surface can be selected by releasing the latch and rotating only the desired printing wheel.

[0007]

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

FIG. 1 is an external view of an electronic numbering device according to the present invention. The electronic numbering device includes a main body 1 and an opening formed of a transparent member for facilitating confirmation of a printing position and showing a printing position. It consists of a slide 3 with 2. The main body 1 is composed of a front body 1a and a rear body 1b. A keyboard 4 constituting an input means and a display device 5 (display means) composed of an LCD or the like are provided on a central front surface of the front part 1a of the main body, and a battery lid 6 for replacing a battery is provided on an upper portion. Has been.

FIG. 2 is a front sectional view of the present apparatus, and FIG.
FIG. 3 is a side sectional view taken along the line aa of FIG. 2. The internal configuration will be described below based on these drawings.

Both sides of the type wheel shaft 7 are supported by the chassis 9 via the metal 8. On one side surface of the plurality of type wheels 10, a groove portion 10a for storing a type spring 11 for engaging and positioning the type wheels 10 and the type wheel shafts 7 at a constant pitch.
And a plurality of engaging claws 10b for engaging and disengaging the engaging portion 15a at one end of the latch 15, and the thrust of the type spring 11 is fitted to the groove 10a on the opposite side surface. A spring retainer 10e that restricts swinging in the direction is integrally provided. The type wheel 10 has the groove portion 10a.
The character springs 11 for each digit stored in the column are connected to and detached from the claw portion 7a divided in the radial direction on the character wheel shaft 7 at the same angular pitch as the stamp face 18 of the character wheel 10 so that each character is independent. It is rotatably supported. Further, one end of the type wheel shaft 7 is connected to the stepping motor 25 by the shaft joint 12 so as to be integrally rotatable.

The stepping motor 25 has a diameter smaller than that of the type wheel 10 and is fixed to the motor fixing plate 13 by screws (not shown). The motor fixing plate 13 is also fixed by screws (not shown) or the like. It is fixed to. Further, the mounting position of the stepping motor 25 with respect to the motor fixing plate 13 is fixed at a position where it does not project in the printing position direction.

FIG. 4A is a perspective view of the character selection cam.
FIG. 4B is a perspective view of the character selection cam of FIG. 4A rotated by 180 °. As is apparent from this figure, the character selection cam 14 is arranged in a spiral shape on the surface of the cylindrical cam at substantially equal angular pitches, and is a recess for actuating the cam follower 15b at the other end of the latch 15 for the number of digits ( (8 digits in the case of the embodiment) 16a to 16h and a depth which is about half the depth of the recess 16 and extends in the entire longitudinal direction of the character selection cam 14 and rotates the latch 15 of all digits to the reset position. Groove 17
After the character selection operation is completed, the marking surface 18 of the type wheel 10 is held so as not to be displaced, so that the latches 15 of all the digits are rotated to the fixed position, and the character selection cam 14 is provided.
And a blank 20 for adjusting the division pitch.

The character selection cam shaft 21 has metal 2 on both sides.
It is supported by the chassis 9 via 2. The character selection cam 14 is fixedly supported by the character selection cam shaft 21 and rotates integrally with the character selection cam shaft 21. Further, one end of the character selection cam shaft 21 is connected to the stepping motor 26 by the shaft joint 23 so that the driving force of the stepping motor 26 can be directly received. Like the stepping motor 25, the stepping motor 26 is fixed to the motor fixing plate 13 with a screw (not shown). At the other end of the character selection cam shaft 21, an encoder 4 for indicating the base point position of the character selection cam 14 is provided.
7 and a position sensor 45 that is switched by the encoder 47 are fixed to the chassis 9 with screws or the like (not shown).

A latch 15 which sequentially releases the type wheel 10 as the character selection cam 14 rotates is rotatably supported by a latch shaft 24 fixed to the chassis 9. The cam follower 15b at the other end of the latch 15 is constantly pressed against the character selection cam 14 by a comb spring 27 which is fixed to the chassis 9 with screws or the like (not shown).

The slide 3 engages the slide protrusions 34 formed integrally with the vertically long slots 33 formed on both side surfaces of the main body 1, and relatively slides relative to the main body 1 along the long slots 33. Move up and down. A spring 35 is provided between the slide protrusion 34 and the main body 1 so that the main body 1 can be used during printing operation.
Is manually pushed downward and released, the spring 35 causes the spring 35 to return to its original position.

The ink is replenished by the ink pad 29 made of a porous polymer material during the printing operation. The ink pad 29 is housed in the pad case 30, and a pad spring (not shown) has a pad case 30.
Is moved to the standby position, and is pressed against the printing surface 18 during the printing operation to replenish the ink.

Further, a room for accommodating a plurality of batteries 32 is integrally formed on the upper portion of the main body 1, and the battery lid 6 is provided.
Open and close to replace the battery.

FIG. 5 is a system block diagram of this apparatus, which is mainly arranged on the substrate 43 fixed to the chassis 9 by screws (not shown) or the like. The keyboard 4 constituting the input means is connected to the CPU 38 of the control means 39. The control means 39 centrally manages the power supply circuit 50, the transmission circuit 48, the voltage detection circuit 37 for detecting the voltage of the power supply circuit 50, the input information and the memory information, and executes the character selection operation and the display. CPU 38 and the C
A stepping motor 25, 2 is generated by a signal from the PU 38.
6 are operated by drivers 40 and 41, respectively. The display device 5, which is a display unit, includes a control unit 39.
Is controlled by the CPU 38. The printing unit 44 includes stepping motors 25 and 26 as motors for selecting characters, a print sensor 46 for detecting a printing operation, and a position sensor 45 for detecting an initial position of the character selection cam 14.

The operation will be described below.

The print sensor 4 indicates that the printing operation is completed.
6 is confirmed, the positioning portion 19 on the character selection cam 14
Pushes up the cam followers 15b of all the latches 15, and the engaging portions 15a of the latches 15 engage the engaging claw portions 10 of the type wheel 10.
It is in a state of being engaged with b, and is in a state of waiting for a character selection command of the control means 39 while being held so that the type wheel 10 does not cause a position shift.

A general character selection operation is a case where an arbitrary numerical value is input from the keyboard 4 or the numerical value changes by a predetermined amount according to a specific regularity. Assuming that the distance in the radial direction from the stamp face 18 on the type wheel 10 to the next stamp face 18 is 1 pitch, the control unit 39 compares the current state of the type wheel 10 with the set value to be changed next, and the displacement is performed. The stepping motors 25 and 26 calculate the amount and output the set value to the print position.
Give an order to.

A character type wheel 1 of a girder that rotates a predetermined displacement amount.
From 0, the character selection cam 14 is rotated to disengage the latch 15, the cam follower 15b of the latch 15 enters the recess 16 on the character selection cam 14, and the latch 15 moves from the engagement claw portion 10b of the type wheel 10. The engaging portion 15a of is disengaged. When the rotation of the character selection cam 14 is completed, the type wheel 10 is rotated in the direction of arrow A by the amount of displacement described above. Here, the rotation of all the remaining type wheels 10 with which the latch 15 is engaged is prevented by the latch 15, so that the type springs 11 stored in the type wheels are used to rotate the type wheel shaft 7.
The necessary engagement surface 18 can be formed at the printing position by repeating the engagement and disengagement with the claw portion 7a for the rotation pitch. By repeating the above-mentioned operation at necessary digits, the set value and the stamp surface 18
Are aligned in the digit direction at the print position.

In this way, the character selection cam 14 is rotated again, and the positioning portion 19 on the character selection cam 14 is stopped at a position where all the latches 15 are pushed up.
In order to prevent misalignment, the latch 15 waits for the printing operation while holding the type wheel 10.

Furthermore, the user is informed by using some kind of notification means such as displaying on the display device 5 that the character selection is completed, and after the user confirms the completion of the character selection operation, the opening 2 of the slide 3 is printed. By depressing the main body 1 in accordance with the position, the selected marking surface 18 is pressed against an arbitrary object to perform printing.

Next, the reset process will be briefly described. When an error occurs in the character selection process when the battery 32 is replaced or due to some reason, all digits are immediately reset once and then the next process is started. Character selection cam 14
Is rotated to stop all the latches 15 at the position where the cam follower 15b engages with the reset groove 17. Here, since the reset groove 17 has a depth of about half that of the normal recess 16, the latch 15 pushed up by the reset groove 17 can rotate only to its original half engagement position. Only one of the engaging claws 10b of the type wheel 10 can be engaged with the engaging claw 10d having a high claw height. If the type wheel 10 is rotated once in this state, the rotation is blocked by the latch 15 at the position of the engaging claw portion 10d where all the digits are provided at the same position, and a mechanical reset operation can be performed.

[0026]

As is apparent from the above description, the electronic numbering device of the present invention can reduce the number of operations required for character selection as compared with the conventional one, and since the mechanism is simple, there are few failures and power consumption. It has an excellent effect that it is possible to significantly reduce the cost.

[Brief description of drawings]

FIG. 1 is an external view of an electronic numbering device.

FIG. 2 is a front sectional view of the device.

FIG. 3 is a side sectional view taken along the line aa in FIG.

FIG. 4A is a perspective view of a character selection cam. (B) It is a perspective view of the state which rotated the character selection cam of (a) figure 180 degrees.

FIG. 5 is a system block diagram of the present apparatus.

[Explanation of symbols]

 4 keyboard 5 display device 10 type wheel 14 character selection cam 15 latch 16 recess 39 control means 44 printing means

Claims (1)

[Claims] 1. An input means (4) for setting and inputting data to be printed, a display device (5) for displaying data input by the input means (4), and based on the input data. And a printing unit (44) for printing the value set by the control unit (39) on an arbitrary object by a plurality of printing wheels (10). In the electronic numbering device, provided corresponding to each of the plurality of type wheels (10),
Movable latches (15) that engage and disengage with the corresponding type wheels (10), and recesses (1) for selectively selectively disengaging the respective latches (15) from the type wheels (10).
An electronic numbering device comprising: a movable character selection cam (14) separately provided for each type wheel (6).