JPH07120450B2 - Step-up control method of time recorder - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a step-up control method for setting a step position so that a time card printed by a time recorder is printed at a predetermined print position. It is a thing.

(Prior Art) In the step-up control of the conventional time recorder, for example, when the step position is initialized, when the power is restored, or when the moon changes from a small moon to a large moon, the step-up is performed a plurality of times. Is performed continuously.

In this conventional technique, if a time card is inserted before the step-up operation is started by a plurality of step-up commands and is not completed yet, the step position is locked by the time card. However, there is a problem that the step does not move up even by the step-up command, and thus the step position is displaced.

Therefore, the applicant of the present application previously disclosed in Japanese Patent Application No. 62-234038,
Once it has been raised to the uppermost stage, it is dropped, this drop position is detected as the initial position, the required number of stages is calculated by this detection signal, and the number of stages is increased. In addition, if a time card is inserted during the raising operation, the raising operation is interrupted and the remaining raising operation is executed after the time card is pulled out. I am proposing a product that does not cause misalignment. A mechanical switch or an optical switch is used to detect the initial position.

(Problems to be Solved by the Invention) If the configuration is such that the number of steps is calculated by the detection signal of the initial position as described above, the switch for initial position detection should fail and the detection signal may be obtained. If there is no case, the necessary number of steps is not calculated, and the first step operation cannot stop. As a result, the step-up drive solenoid and the power transformer may generate heat, which may cause damage or fire.

Therefore, an object of the present invention is to prevent the step-up operation from being stopped even if the switch for initial position detection should fail, and to prevent the risk of damage to parts or fire.

(Means for Solving the Problems) In the present invention, the time recorder includes a lever mechanism that is displaced by the operation of the step-up solenoid and returns to its original position by the spring force of the return spring, and this lever mechanism uses the spring force of the return spring. Determines the step position to print on the time card, including the ratchet gear that is stepped through the feed claw when returning to the original position and the rack and pinion type step-up mechanism that operates in conjunction with the rotation of this ratchet gear And a reference position detecting switch for detecting that the raising mechanism is located at the reference position. A feature of the present invention is that during the continuous step-up operation, the step-up operation is stopped when the reference position detection switch does not operate even when the preset number of steps is reached.

(Example) Below, one Example of this invention is described based on drawing.

The time recorder of the present invention has an analog section and a digital section, and the phase of the analog section is matched with the setting contents set in the digital section. The analog section is an analog display section 1 as shown in FIG. 2, a printing mechanism B including printing wheels 27, 28 and 29 and a printing hammer 30, and card row positioning for determining the row position of the time card 47 to be printed. And device C. Further, the digital section includes an electronic timing circuit 6 serving as a basic clock and a digital display section 4 for digitally displaying the timing contents of the timing circuit, and display means 2 and 3 for displaying the surface to be printed of the time card. Contains.

FIG. 2 shows an analog display section 1 including an hour hand 26 and a minute hand 25, and display means 2 and 3 on the front and back of the time card. The display means 2 on the printing surface is displayed by a numeral in one corner of the digital display unit 4, where "1" represents the front and "2" represents the back. The print surface display means 3 comprises a lamp 3a for displaying the front and a lamp 3b for displaying the back on the upper portion of the analog display section 1. A light emitting diode or the like is also used as the lamp, and a color lamp or the like matching the color of the front and back of the time card is also used.

FIG. 1 shows an example of a circuit for driving this time recorder. Its control circuit 5 includes an electronic timing circuit 6, a CPU 7 and
It consists of a ROM 8 that stores a control program that manages the operation of the CPU, and a RAM 9 that stores the time when the power failure started. A motor drive signal S1 for driving the analog display unit 1 and the type wheels 27, 28, 29 of the printing mechanism from the control circuit 5.
And a print command signal S2 that drives the print hammer 30 of the print mechanism.
And the front and back judgment signals S3, S3a, S3b
And a step-up signal S4 that determines the step position of the card of the time card 47.

Therefore, the configuration will be described below sequentially from the analog section.

First, the structure for driving the analog display unit 1 will be described. As shown in FIGS. 3 to 5, the drive motor 11 is operated via the motor drive circuit 10 by the output of the motor drive signal S1 from the control circuit 5 described above. . Motor shaft 11a of motor 11
A motor pinion 12 is fixedly attached to the clutch pin 13, and a clutch wheel 13 is meshed with the pinion. A minute feeding projection 13a and a date feeding projection 13b are provided on both side surfaces of the clutch wheel 13, and an engaging projection 14a of the minute clutch wheel 14 and an engaging projection 15a of the date clutch wheel 15 are provided.
And are in mesh with each other. The above three clutch cars 13-
Both ends of the clutch axle 16 penetrating 15 are left and right side plates 17a, 17
The minute and date clutch wheels 14 and 15 supported by b are elastically engaged with the clutch wheel 13 via their respective projections by receiving the spring force of the coil springs 18a and 18b.

Explaining the meshing state of the minute feeding protrusion 13a and the engaging protrusion 14a and the meshing state of the date feeding protrusion 13b and the engaging protrusion 15a, when the clutch wheel 13 rotates in the forward direction, the rotation thereof is in the minute clutch wheel 14. It is transmitted and is not transmitted to the date clutch wheel 15. When the clutch wheel 13 rotates in the reverse direction, the rotation is transmitted to the date clutch wheel 15 and not to the minute clutch wheel 14.

The rotation of the minute clutch wheel 14 is transmitted to the analog display unit 1 via the transmission mechanism A. As for the transmission mechanism A,
A minute reduction gear 19 is engaged with the pinion 14b of the minute clutch wheel 14. The minute reduction gear wheel 19 is rotatably supported by a reduction gear axle 20, and a crown gear 19a is provided on one side surface thereof. The first transmission wheel 21 meshes with the crown gear 19a. First
The rear wheel 22 of the day and the minute hand pinion 23 sequentially mesh with the transmission wheel pinion 21a, and the hour hand wheel 24 meshes with the back wheel pinion 22a of the day. A minute hand 25 and an hour hand 26 are attached to the minute hand pipe 23a and the hour hand pipe 24a, respectively, and the minute hand 25 and the hour hand 26 are sent by the supply of the motor drive signal S1 to display the present time in analog form.

Next, the printing mechanism B for printing the date and time on the inserted time card 47 will be described with reference to FIGS. On the printing mechanism B, there are numbered type wheels 27 with numbers "0" to "59" protruding from the outer peripheral surface, and hour type wheels 28 with numbers "0" to "23" protruding from "1". Date type ring 29 with numbers up to "31"
And hammer rubber across these three type wheels 27-29
It includes a printing hammer 30 with 30a. The time-setting ring 28 is rotatably supported on the printing shaft 31, and the split-printing wheel 27 is rotatably supported on the boss portion of the time-printing ring 28.
Is rotatably supported by the type shaft 31. The driving of the minute and hour type wheels 27 and 28 will be described. A transmission pinion 19b is provided on the other side surface of the minute reduction wheel 19 in the transmission mechanism A to the analog display unit 1 driven by the supply of the motor drive signal S1 described above. The transmission pinion 19b is meshed with the gear 27a of the character dividing wheel 27, and is rotationally driven to rotate once per hour in conjunction with the analog display unit. In order to transmit the rotation of the character type wheel 27 to the hour character wheel 28, a cam portion 27b is formed in the center of the character type wheel 27 as shown in FIG. 6, and 24 cams are formed at the right end of the character type wheel 31. Feeding ratchet wheel 32 with ratchet teeth
Is stuck. An L-shaped feed lever 34 is pivotally supported on a fixed shaft 33 protruding from the right side plate 17a so as to be swingable. Protrusion 34a formed on the tip of one arm of the feed lever
Slides on the cam surface of the cam portion 27b and causes the feed lever 34 to swing once every time the cam portion 27b makes one rotation per hour. An hour feeding pawl 35 is swingably connected to the tip of the other arm of the feeding lever 34 by a feeding pawl stem 35a.
Is engaged with the hour-feed ratchet wheel 32. Feed lever 34
The spring force of the hour feeding pawl 35 is constantly urged toward the cam portion 27b and the hour feeding ratchet wheel 32 by the force of the spring 36. Therefore, while the protrusion 34a slides on the cam surface for one hour, the hour feeding pawl 35 retracts by one tooth of the hour feeding ratchet wheel 32 and engages with the next tooth, and the protrusion 34a makes a step on the cam surface. When falling, the hour feed ratchet wheel 32 is instantly rotated by one tooth by the spring force of the spring 36, and the hour wheel 28 is rotationally driven via the letter shaft 31. 37 is a reverse rotation stop claw of the hour feeding ratchet wheel 32. The driving force of the date type wheel 29 is given from the date clutch wheel 15. That is, as shown in FIG. 3, the date reduction wheel 38 meshes with the pinion 15b of the date clutch wheel 15, and the gear 29a of the date type wheel 29 meshes with the date deceleration pinion 38a, so that the rotation is sequentially transmitted. As described above, in the date clutch vehicle, the rotation is transmitted when the clutch wheel 13 rotates in the reverse direction. Therefore, the motor drive signal S1 that causes the drive motor 11 to rotate in the reverse direction once in 24 hours is output to the motor drive circuit. It is supplied to 10. Further, the print hammer 30 is driven by the print command signal S2 from the control circuit 5 being supplied to the print solenoid 40 via the print solenoid drive circuit 39. That is, as shown in FIG. 7, the plunger of the print solenoid 40
41 is a hammer drive lever pivotally supported by a shaft 42
One arm of 43 is connected via a spring pin 44. The hammer drive lever 43 is provided with a recess 43a, and the swing center shaft 45 of the printing hammer 30 is located at a position of this recess with a gap therebetween to regulate the swing angle of the hammer drive lever 43. The hammer drive lever 43 elastically contacts the back of the print lever 30 by the return spring 46, and swings by the operation of the print solenoid 40 to cause the print hammer 30 to pop out toward the type wheels 27 to 29 and print on the time card 47. After printing, the return spring 46 returns to the original position after printing.

As shown in FIG. 8, the time card 47 used in the time recorder of the present invention is of a double-sided recording type, and the front surface 47a has one
There are 5 columns and 16 columns of printing columns 47c on the back surface 47b, and printing for 31 days is possible. In addition, 1 to
The number 31 does not indicate the date, but merely the print level. As shown in the seventh illustration, this time card 47
From the card guide 49 which is opened in the upper plate of the frame 48, the above-mentioned minutes, hours, and dates are inserted between the printing wheels 27, 28, 29 and the printing lever 30. The lower end of the time card 47 is configured to be received by a card receiving portion 50a provided on the switch lever 50 as shown in FIG. The switch lever 50 is swingably supported by a switch lever true 51, and a spring force for pushing the card receiving portion 50a upward is biased by the switch lever spring 52. The operation piece 50b of the switch lever 50 turns on / off the card detection switch 53. By supplying the signal of the card detection switch 53 to the control circuit 5, the print command signal S2 is sent to the print solenoid drive circuit 39.
Is supplied to.

The switch lever true 51 and the card detection switch 53 are attached to the step-up rack 54 of the card step positioning device C. Therefore, the card stage positioning device C will be described below.
3, 7, 10 will be described. The card stage positioning device C comprises a lever mechanism C1, a feed pawl 65, a ratchet gear 67a, and a raising mechanism C2. The lever mechanism C1 is the 10th
As shown in the figure, when the step-up signal S4 from the control circuit 5 is supplied to the step-up solenoid drive circuit 55 (first shown),
The step-up solenoid 56 operates. To the plunger 57 of the step-up solenoid 56, one arm of a first set lever 59 swingably supported by a swing center shaft 58 is connected by an engagement pin 59a. A second set lever 62 and a third set lever 63 are swingably supported on the swing center shafts 60 and 61, respectively, and a first set lever 59, a second set lever 62, and a second set lever 62 are provided. The third set lever 63 is connected by pins 59b and 63a to form a lever mechanism. A return spring 64 is hooked on the operating portion 59c of the first set lever 59. A step-up wheel feed pawl 65 is swingably connected to the tip of the third set lever 63 by a feed pawl true 65a, and this pawl is engaged with a ratchet gear 67a of the first step-up wheel 67 by a spring 66. The elastic force is urged. The first-stage hoisting wheel 67 is rotatably supported on the type shaft 31, and the reverse rotation stop claw 68 is engaged with the ratchet gear 67a so that the reverse rotation cannot be performed. For this reason, the step-up signal S4 is input, the step-up solenoid 56 is actuated, the feed pawl 65 is retracted by one tooth and engaged with the rear tooth, and then the step-up signal S4 is cut off.
The spring force of the return spring 64 restores the original position, and at this time, the ratchet gear 67a is stepped by the feed pawl 65. The ratchet gear 67a has 32 teeth, and the first raising wheel 67 has 64 teeth. As shown in Fig. 7, the 64 tooth profiles have thick teeth 67b, 67b at positions 180 degrees apart from each other, and two toothless portions are provided in the counterclockwise direction from the thick tooth 67b to form 28 thin teeth. There is a tooth 67c and a missing tooth portion for one tooth. The intermittent rotation of the first step-up vehicle 67 due to the intermittent stepping of the ratchet gear 67a described above is transmitted to the rack and pinion type step-up mechanism C2, and the second step-up gear 67 that meshes with the first step-up vehicle 67 is transmitted. Lifting car 68
Are rotatably provided on the support shaft 69. Second-stage lifting vehicle 68
The rack feed gear 68a is integrally formed with the rack feed gear 68a, and the number of teeth of the rack feed gear is 17, and one is a toothless portion. The number of teeth of the second step raising wheel 68 is 34. From the thick tooth 68b that meshes with the thick tooth 67b of the first step raising wheel, a toothless portion for one tooth is provided in the counterclockwise direction to form a thin tooth 67c. There are 28 thin teeth 68c that mesh with each other and a missing tooth portion for 4 teeth. The rack teeth 54a of the step-up rack 54 described above mesh with the rack feed gear 68a. The step-up rack 54 is vertically movable along the rack guide shaft 70. In FIGS. 7 and 10, 71 is a rack stopper provided on the left side plate 17b, which regulates the position of the lowermost stage of the step-up rack 54. The lowermost position of the raising rack 54 serves as a reference position for calculating the number of raising steps, and a limit position detection switch 72 is operated to generate a reference position detection signal. The above-mentioned first stage raising car
The toothless portions formed on the 67, the second step raising wheel 68, and the rack feed gear 68a are provided for dropping the step raising rack 54 to the uppermost stage and then dropping it to the lowermost stage.

In FIG. 2, reference numerals 73 and 74 denote an exterior front frame and a rear frame, respectively, and an operation panel 75 is provided on the front surface. Control panel 75
Can be opened and closed by swinging the front lid 76.

In FIGS. 1 and 11, the mode selector switch 77 provided on the operation panel 75 can be selectively switched between the digital terminal 77a, the analog terminal 77b, and the lock terminal 77c. Reference numeral 78 is a select switch, and 79 is a set switch.

The power supply circuit 80 shown in the first drawing converts the commercial power supply AC into direct current to supply drive power to the motor drive circuit 10 and the solenoid drive circuits 39, 55, and also, in the floating state, the secondary battery 81.
It is configured to supply operating power to the control circuit 5 and the display drive circuit 82 of the digital display unit 4 while charging the battery.

By the way, when the supply of the commercial power supply AC is cut off due to a power failure or the like from the energized state, the control circuit 5 receives the supply of power from the secondary battery 81 for backup and continues the operation state. At the same time, since the display drive circuit 82 is also supplied with power from the secondary battery 81, the current time is continuously displayed on the digital display unit 4 as before the power failure. However, when the supply of commercial power AC is stopped, the power failure detection circuit 83 inverts its output to the H level. The CPU 7, which has received the H level signal, stores the time of the clock circuit 6, that is, the time of the start of the power failure in the RAM 9, and also drives the motor drive circuit 10, the print solenoid drive circuit 39 and the step-up solenoid drive circuit 55 with drive signals S1, S
Prevents output of 2, S4. Therefore, the drive circuits 10, 39, 55 in the portions that require a large current are held in an inoperative state, and unnecessary waste of the backup secondary battery 81 is prevented. The power failure state is supplied from the power failure detection circuit 83 to the power failure time detection circuit 84, and the power failure time measurement starts.

In such a state, when the commercial power supply AC is supplied to the device due to recovery from a power failure or the like, the power failure detection circuit 83 is inverted and L
At the same time as outputting the level signal to the control circuit 5, the power failure time detection circuit 84 stops measuring the power failure time. CP
U7 releases the operation prohibition state of the motor drive circuit 10 and outputs a pulse signal having a higher repetition frequency to the motor drive circuit 10 as compared with the normal motor drive signal S1, while regards this pulse signal as the drive signal S1. Add to the power failure start time stored in RAM9. The motor 11 receives the pulse signal with the high repetition frequency, and the analog display unit 1
Fast forward 27,28,29. By continuing such operations, the output of the pulse signal for fast-forwarding is stopped when the added value of the power failure start time and the pulse signal matches the value of the clock circuit 6. As a result, the display time of the analog display unit 1 and the date, hour, and minute of the type wheels 27, 28, 29 are automatically corrected to the current time. At the same time, the CPU 7 releases the operation prohibition state of the solenoid drive circuits 39, 55, and the automatic step-up correction shown in the flowchart shown in FIG.

In this embodiment, the time when the supply of commercial power AC is cut off is stored in the RAM 9, but the total of the time from the start of the power failure to the restoration of the power failure and the time required for the time adjustment. It goes without saying that even if the value, that is, the time from the power failure to the completion of the correction is settled and the number of pulse signals corresponding to this time is output, the same operation is achieved.

Next, the display of whether the surface to be printed on the time card 47 is the front surface 47a or the back surface 47b will be described in detail. The surface to be printed is calculated from the current date and deadline date using the following formula.

That is, assuming that the deadline date-present date = A, the table is displayed when -15≤A≤-1, the table is displayed when 16≤A≤30, and the reverse is displayed when 0≤A≤15 -30-30A When ≦ −16, it is the back side. As shown in Fig. 12, the front and back displays are digital display 4
In this case, the month display 4a, the day display 4b, and the front / back display 2 are displayed. In the front / back display 2, the front side is displayed as "1" and the back side is displayed as "2".

For example, when the current date is August 29th and the deadline is 20th, A = 20−29 = −9, which is printed on the surface 47a by the above formula. Therefore, the display "1" as shown in FIG. 12 (a) is made on the digital display section 4 by the front / back determination signal S3. For example, when the current date is September 12th and the deadline is 25th, A = 25-12 = 13, and is printed on the back surface 47b by the above formula. Therefore, the display "2" as shown in FIG. 12 (b) is made on the digital display section 4 by the front / back determination signal S3.
When displaying the front and back with a lamp like the display means 3, when the front is determined, the front and back determination signal S3a is output to turn on the lamp 3a (second illustration). When the back side is determined, the front / back determination signal S3b is output and the lamp 3b is turned on.

As described above, when it is determined whether the surface of the time card 47 to be printed is the front surface 47a or the back surface 47b, the next step is what number of the current date should be printed on that surface, and It must be determined if a step up is required. The calculation method of the number of steps is as follows.

Now deadline-present day = A, | A | is the absolute value of A, and B is the number of steps, 16 ≦ A ≦ 30 Table 30−A = B ……… 0 ≦ A ≦ 15 Back 15−A = B ………… −15 ≦ A ≦ −1 Table | A | −1 = B …… −30 ≦ A ≦ −16 Back | A | −16 = B.

Therefore, the current date as shown as the first example above is August.
If the deadline is 29 days and the deadline is 20 days, and if it is found that printing should be performed on the surface 47a with A = 20−29 = −9, the number of steps to be raised on the front side can be calculated according to the above formula: B = 9− When 1 = 8, eight steps of steps are required, and an 8-pulse step-up signal S4 is supplied from the control circuit 5. The uppermost row of the print column 47c is configured such that the number of upper layers is 0, and the number of upper layers is 1 when printing is performed in the second layer.

Also, the current date as shown as the second example above is September 12
When the deadline is 25th and it is found that the back side 47b should be printed with A = 25-12 = 13, the step number is 15-13 = 2 according to the above formula, and the number of steps is 2 steps. Raising is required, and 2-pulse step-up signal
S4 is supplied from the control circuit 5.

If the surface to be printed includes a column corresponding to 29th to 31st that does not exist in February or a small month, the column is blank.

Next, at the time of initial setting of the step position, at the time of restoration from the power failure described above, or when the moon moves from a small moon to a large moon, it may be necessary to carry out a plurality of steps at once. At this time, since a plurality of step-up signals S4 are supplied, the card-step positioning device C described above continuously performs the step-up operation by these signals.

Therefore, the continuous raising operation will be described with reference to the flowchart shown in FIG. Assuming that the current stage position of the stage rack 54 is n, n = 0 when the continuous stage starts.
Is. Therefore, the step is raised by one step, and at this time, the limit switch
If 72 is turned on, it is asked if n is equal to the preset number k of steps if no, and if it is no, the step is further increased by one. If the maximum number of stages of the time card is set to 16 as in this example, the number of stages k is k ≧
Set to 16. This is repeated and finally the raising rack 54
When the limit switch 72 detects the reference position by reaching the uppermost stage and the limit switch 72 detects the reference position, the limit switch 72 becomes YES, and the above-mentioned number of steps is calculated and the number of steps L is increased.
Is calculated. Limit switch is no, but n =
When the value becomes k, this means that the limit switch 72 is defective, so that the limit switch defect is notified at the same time when the step-up is stopped.

When the number of steps L is calculated, it is asked whether or not L = 0, and if YES, it is not necessary to carry out the steps, so that the steps are completed. If no, then m = 0 when the current rack position of the rack 54 is m, when the rack starts. Therefore, the step is raised by one step. At this time, if the limit switch 72 is still in the ON state and the answer is yes, it means that the limit switch is defective. Therefore, the step switch is stopped and the limit switch is informed at the same time. If the limit switch 72 is NO, it is asked whether m = L, and if NO, it is raised by one step and this step is repeated. Finally, when m = L is YES, the step is finished.

(Effect of the Invention) Since the method of the present invention is as described above, even if a failure occurs in the switch for detecting the reference position during continuous step-up operation, this is detected and the step is detected. The raising operation can be stopped. As a result, the heat generated by the step-up drive solenoid, transformer, etc. is suppressed, and the risk of component damage and fire can be prevented.

[Brief description of drawings]

FIG. 1 is a block diagram of a circuit for driving a time recorder according to the present invention, FIG. 2 is an external perspective view of the time recorder, and FIG. 3 is a main part of a drive mechanism. FIG. 4 is an exploded perspective view of the clutch mechanism, FIG. 5 is a sectional view of a transmission mechanism to the analog display unit,
FIG. 6 is a side view of a mechanism for driving an hour-printing wheel, FIG. 7 is a side view of a printing mechanism and a card stage positioning device, FIG. 8 is a front view and a back view of a time card, and FIG. 9 is a card detection switch. Fig. 10 is a front view of the mechanism, Fig. 10 is a side view of the raising mechanism and the card stage positioning mechanism, Fig. 11 is a front view of the operation panel, and Fig. 12 is a front view showing a display example of the digital display unit.
FIG. 13 is a flow chart for explaining the continuous raising operation. C: Card step positioning device, C1 ... Lever mechanism, C2 ... Step up mechanism, 47 ... Time card, 56 ... Step up solenoid, 64 ... Return spring, 65 ... Feed claw, 67a ... Ratchet Gear, 72 ... Reference position detection switch.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koharu Shimizu 934-13 Shikato, Yotsukaido-shi, Chiba Stock company Seikosha Chiba Works (56) References JP-A-59-72584 (JP, A) JP-A-SHO 62-96772 (JP, A)

Claims (2)

[Claims] 1. A lever mechanism that is displaced by the operation of a step-up solenoid and returns to its original position by the spring force of a return spring,
A ratchet gear that is stepped through the feed claw when the lever mechanism returns to the original position by the spring force of the return spring, and a rack and pinion type step-up mechanism that operates in conjunction with the rotation of the ratchet gear. In a time recorder that includes a card stage positioning device that determines the stage position to be printed on the included time card, and a reference position detection switch that detects that the stage raising mechanism is located at the reference position, during continuous raising operation, A step-up control method for a time recorder, wherein the step-up operation is stopped when the reference position detection switch does not operate even after reaching a preset number of steps. 2. The continuous raising operation according to claim 1, wherein the raising operation is stopped when the initial position detection switch continues to be in the operating state after the preset number of steps is reached. The step-up control method for the time recorder, which is characterized in that