JPH01175693A - Method for controlling stage rising of time recorder - Google Patents

Abstract

PURPOSE:To prevent the damage of parts and the danger of a fire by stopping a stage rising action when a reference position detection switch is not actuated, even when it reaches the number of stages set beforehand during the action of successive stage rising. CONSTITUTION:When a stage rising rack 54 reaches a top stage, drops and a referrence position is detected by a limit switch 72, the limit switch 72 turns to 'yes', the operation of the number of stage rising is executed and the number of stage rising L is calculated. When whether it is L=0 or not is asked and 'no' is replied, the stage is risen by one stage, when the limit switch 72 still remains the condition of 'on' at that time and it is 'yes', since it means that the limit switch is defective, the stage rising is stopped and simultaneously it is informed that the limit switch is defective. Thus, the heat generation of a solenoid 56, a transformer and the like is suppressed and the damage of parts and the danger of a fire can be prevented.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a step-up control method for setting the step position so that a time card printed by a time recorder is printed at a predetermined printing position. It is something.

(Prior art) In conventional time recorder step-up control, steps are raised multiple times, for example, when initializing the step position, when recovering from a power outage, or when changing from a small month to a large month. are performed continuously.

In this conventional technology, if a time card is inserted before the step-up operation has started due to multiple step-up commands but has not yet finished, the step position is locked by the time card. Even when a step-up command is given, the step does not go up, which causes a problem in that the step position shifts.

Therefore, in Japanese Patent Application No. 62-234038, the applicant of the present application previously raised the stage to the top level and then dropped it, detected this falling position as the initial position, and calculated the number of steps required to be raised based on this detection signal. If the system is configured to perform step-up of this number, and a time card is inserted during step-up operation, the step-up operation is temporarily interrupted and the time card is pulled out. We have proposed a method in which the remaining step-up operations are executed after the steps have been completed, thereby preventing step position deviations from occurring. A mechanical switch or an optical switch is used to detect the initial position.

(The problem to be solved by the invention) If the configuration is such that the number of stages to be raised is calculated and obtained based on the detection signal of the initial position as described above, in the unlikely event that the switch for detecting the initial position malfunctions, the detection signal cannot be obtained. If this happens, the required number of stages will not be calculated and the first stage raising operation will not stop. As a result, the step-up driving solenoid and power transformer generate heat, which may cause damage or fire.

SUMMARY OF THE INVENTION An object of the present invention is to prevent the step-up operation from being stopped even if the initial position detection switch fails, thereby preventing damage to parts and the risk of 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 a lever mechanism that is moved by the spring force of the return spring. It includes a ratchet gear that is advanced via a feed pawl when returning to the original position, and a rack and pinion type raising mechanism that operates in conjunction with the rotation of this ratchet gear to determine the stage position where the time card should be printed. and a reference position detection switch that detects that the stage raising mechanism is located at the reference position. A feature of the present invention is that during the continuous step-up operation, if the reference position detection switch does not operate even when a preset number of steps is reached, the step-up operation is stopped.

(Example) An embodiment of the present invention will be described below based on the drawings.

The time recorder of the present invention has an analog section and a digital section, and the phase of the analog section is adjusted to match the settings set in the digital section. The analog section includes an analog display section 1 as shown in the second diagram, a printing mechanism B including a type wheel 27, 28, 29 and a printing hammer 30, and a time card 4.
7, and a card stage positioning device C for determining the position of the stage to be printed. Further, the digital section includes an electronic timekeeping circuit 6 serving as a basic clock, a digital display section 4 that digitally displays the time measurement contents of this timekeeping circuit, and further includes display means 2 and 3 that display the side to be printed on the time card. Contains.

FIG. 2 shows an analog display section 1 including an hour hand 261 and a minute hand 25, and display means 2 and 3 on the front and back sides of a time card. The display means 2 on the printed surface is indicated by numbers in one corner of the digital display section 4, where 1" represents the front side and "2# represents the back side. In addition, the display means 3 for the printing surface is provided above the analog display section 1 with a lamp 3a for displaying the front side and a lamp 3a for displaying the back side.
It consists of b. Light-emitting diodes are used as lamps, and colored lamps that match the color of the front and back of the time card are also used.

FIG. 1 shows an example of a circuit that drives this time recorder, and its control circuit 5 includes an electronic timekeeping circuit 6 and a CPU 7.
It consists of a ROM 8 which stores a control program for managing the operation of this CPU, and a RAM 9 which stores information such as the time at the start of a power outage. From the control circuit 5 to the analog display section 1 and the type wheel 27 of the printing mechanism. ．． 28. 29, a print command signal S2 that drives the print/1 meter 30 of the printing mechanism, and front/back determination signals S3, S3a, S3b that determine whether the printing surface is front or back.
It is configured to output a step up signal S4 for determining the step position of the time card 47.

Therefore, the configuration will be explained below in order from the analog section.

First, the configuration for driving the analog display section 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. . A motor pinion 12 is fixed to the motor shaft 11a of the motor 11, and a Kura-Sochi wheel 13 is meshed with this pinion. On both sides of this Kura Sochi car 13, there is a minute advance projection 13a and a date advance projection 13.
b force (provided, the engagement protrusion 14a of the minute clutch wheel 14
and the engagement protrusion 15a of the date clutch wheel 15 are engaged with each other. Both ends of the clutch axle 16 passing through the three clutch wheels 13 to 15 have left and right side plates 17a and 17b.
The minute and date clutch wheels 14, 15 are supported by coils (f) and under the spring force of springs 18a, 18b are elastically engaged with the clutch wheel 13 via respective projections.

To explain the meshing state between the minute feed projection 13a and the engagement projection 14a and the meshing state between the date feed projection 13b and the engagement projection 15a, when the clutch wheel 13 rotates in the forward direction, the rotation is caused by the minute clutch wheel 14. It is not transmitted to the date clutch wheel 15. When the clutch wheel 13 rotates in the opposite direction, the rotation is the same as the date clutch wheel 15.
and is not transmitted to the minute clutch wheel 14.

The rotation of the minute clutch wheel 14 is transmitted to the analog display section 1 via the transmission mechanism A. Regarding the transmission mechanism A, the minute reduction wheel 19 is engaged with the pinion 14b of the minute clutch wheel 14. The reduction wheel 19 is rotatably supported by a reduction axle 20, and a crown gear 19a is provided on the lower side thereof. A first transmission wheel 21 meshes with this crown gear 19a. The first transmission wheel pinion 21a is sequentially engaged with the minute hand pinion 22 and the minute hand pinion 23, and the hour hand pinion 24 is meshed with the date wheel pinion 22a. A minute hand 25 and an hour hand 26 are attached to the minute hand vibrator 23a and the hour hand vibrator 24a, respectively, and the minute hand 25 and hour hand 26 are moved by the supply of the above-mentioned motor drive signal Sl to display the current time in analog form.

Next, the printing mechanism B that prints the date 1:00 on the inserted time card 47 will be explained with reference to FIG. 3.6.7.

Printing mechanism B includes a type wheel 27. When numbers from "0" to "23" are protruded from the outer circumferential surface, a type ring 27. It includes a date type wheel 29 with numbers up to 312 projecting thereon and a printing hammer 30 with hammer rubber 30a that traverses these three type wheels 27-29. The hour type wheel 28 is rotatably supported on the type shaft 31, and the additional type wheel 27 is connected to the hour type wheel 28.
The date type ring 29 is rotatably supported on a type shaft 31. Regarding the drive of the minute and hour type wheels 27 and 28, the analog display section 1 is driven by the supply of the above-mentioned motor drive signal S1.
A transmission pinion 19b is formed on the other side of the minute reduction wheel 19 in the transmission mechanism A.
The gears 27a are in mesh with each other and are driven to rotate once per hour in conjunction with the analog display section. In order to transmit the rotation of the type wheel 27 to the time type wheel 28, a cam portion 27b is formed at the center of the type type wheel 27 as shown in FIG. A time-feed ratchet wheel 32 having ratchet teeth of 100 mm is fixed. An L-shaped feed lever 34 is swingably supported on a fixed shaft 33 protruding from the right side plate 17a. The protrusion 34a formed at the tip of one arm of the feed lever is connected to the cam portion 27.
b, and the feed lever 34 is swung once every time the cam portion 27b rotates once per hour. A time feed claw 35 is swingably connected to the tip of the other arm of the feed lever 34 by a feed weight 35a.
5 is engaged with the time feed ratchet wheel 32. The feed lever 34 and the hour feed pawl 35 are constantly biased toward the cam portion 27b and the hour feed ratchet wheel 32 by the force of a spring 36. Therefore, while the protrusion 34a slides on the cam surface for an hour or so, the time feed pawl 35 retreats by one tooth of the time feed ratchet wheel 32 and engages with the next tooth, and the protrusion 34a slides over the step on the cam surface. When dropping, the force of the spring 36 instantly moves the time feed ratchet wheel 32 to 16113.
The time type wheel 28 is rotationally driven via the type shaft 31. Reference numeral 37 represents a reverse rotation stopper of the time feed ratchet wheel 32. The driving force for the date wheel 29 is provided by the date clutch wheel 15. That is, as shown in the third figure, 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 reduction pinion 38a, so that rotation is sequentially transmitted. As mentioned above, since the rotation of the date clutch wheel 15 is transmitted when the clutch wheel 13 rotates in the reverse direction, the motor drive signal Sl that causes the drive motor 11 to rotate in the reverse direction once every 24 hours is used to drive the motor. It is supplied to the circuit 10. Furthermore, printing hammer 3
0 is driven by a 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, one arm of a hammer drive lever 43, which is swingably supported on a shaft 42, is connected to the plunger 41 of the printing solenoid 40 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 positioned at this recess with a gap therebetween, thereby regulating the swing angle of the /XX mother moving lever 43. The hammer drive lever 43 is brought into elastic contact with the back of the printing lever 30 by a return spring 46, and is swung by the operation of the printing solenoid 40 to move the printing hammer 30 to the printing wheels 27 to 29.
The time card 47 is printed on the time card 47 by being made to fly out, and after printing is returned to its original position by a return spring 46.

As shown in Figure 8, the time card 47 used in the time recorder of the present invention is of a double-sided recording type, and the front side 47
There are 15 printing columns 47c on the a side and 16 printing columns 47c on the back side 47b, allowing printing for 31 days. Note that the numbers 1 to 31 written on the left line do not indicate the date, but simply indicate the printing stage. As shown in FIG. 7, the time card 47 is inserted into the type ring 27 with the above-mentioned minute 1:01 date from the card guide 49 opened on the upper plate of the frame 48.
．． It is inserted between 28 and 29 and the print lever 30. As shown in FIG. 9, the lower end of the time card 47 is configured to be received by a card holder 50a provided on the switch lever 50. The switch lever 50 is swingably supported by a switch lever stem 51, and a switch lever spring 52 applies a spring force that pushes the card holder portion 50a upward. Operation piece 50b of switch lever 50
The card detection switch 53 is turned on and off. By supplying the signal from the card detection switch 53 to the control circuit 5, the print command signal S2 is supplied to the print solenoid drive circuit 39.

The switch lever stem 51 and the card detection switch 53 are attached to a stage raising rack 54 of the card stage positioning device C. Therefore, the card stage positioning device C will be explained below with reference to FIG. 3.7.10. The card stage positioning device C is composed of a lever mechanism 01, a feed pawl 65, a ratchet gear 67a, and a stage raising mechanism 02. As shown in FIG. 10, the lever mechanism CI has a control circuit 5.
The step-up signal S4 from the step-up solenoid drive circuit 55
(as shown in the first diagram), the step-up solenoid 56 is activated. One arm of a first set lever 59, which is swingably supported on a swing center shaft 58, is connected to the plunger 57 of the step-up solenoid 56 by an engagement pin 59a. A second center lever 62 and a third set lever 63 are swingably supported on the swing center shafts 60 and 61, respectively. The second set lever E4 and the third set lever 63 are connected by pins 59b and 63a to form a lever mechanism. A return spring 64 is latched onto the operating portion 59C of the first central lever 59. At the tip of the third set lever 63, a step-up wheel feed pawl 65 is attached to the feed lever 6.
5a, and an elastic force is applied by a spring 66 to engage the pawl with the ratchet gear 67a of the first stage raising wheel 67. 1st stage lifting car 6
7 is rotatably supported on the type shaft 31, and is prevented from reversing by being engaged with a ratchet gear 67a by a reversing stopper pawl 68. For this purpose, the step-up signal S4 is input, the step-up solenoid 56 is activated, and the feed claw 65 is moved to II!
After retracting I11 minutes and engaging the rear tooth, the step up signal S4
When it breaks, it returns to its original position by the spring force of the return spring 64, and at this time, the ratchet gear 67 is moved by the feed pawl 65.
a is incremented. The number of teeth of the ratchet gear 67a is 3.
The number of teeth of the first stage raising wheel 67 is 64.

As shown in Figure 7, these 64 tooth profiles include 7 teeth 67b, 67b at positions 180 degrees apart, and a thin wall of 28 teeth with a missing tooth part of 2 teeth counterclockwise from the 7 teeth 67b. 67
There is a missing tooth of c and one tooth.

The intermittent rotation of the first stage raising wheel 67 due to the intermittent stepping of the ratchet gear 67a described above is transmitted to the rack and pinion type stage raising mechanism 02.
A second stage raising wheel 68 that meshes with the support shaft 69 is rotatably provided on the support shaft 69. The second stage raising wheel 68 includes a rack feed gear 68. a is integrally formed, and the number of teeth of this rack feed gear is 17, with one tooth missing. The number of teeth of the second stage raising wheel 68 is 34, and from the 7 teeth 68b that mesh with the 7 teeth 67b of the first stage raising wheel, there is a missing tooth part of llil in the counterclockwise direction and meshes with the thin wall 67c. 28 thin tM
There is an i68c and a 4m missing tooth section. The rack m54a of the step-up rack 54 mentioned above meshes with the rack feed gear 68a. The raising rack 54 is vertically movable along the rack guide shaft 70.

In FIGS. 7 and 10, reference numeral 71 denotes a rack stopper provided on the left side plate 17b, which regulates the position of the lowermost stage of the stepped rack 54. This lowest position of the step-up rack 54 becomes a reference position for calculating the number of steps to be raised, and a reference position detection signal is generated by operating a limit switch, which is the reference position detection switch 72. The above-mentioned first stage lifting car 67, second stage lifting car 68. The toothless portion formed on the rack feed gear 68a is provided to allow the raising rack 54 to fall to the lowest stage after being raised to the highest 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 side. The operation panel 75 can be opened and closed by swinging the front lid 76.

In FIGS. 1 and 11, the mode changeover switch 77 provided on the operation panel 75 has a digital terminal 77a and an analog terminal. 7b and lock terminal? 7c. 78 is a select switch, and 79 is a set switch.

The power supply circuit 80 shown in the first diagram converts a commercial power supply AC into a direct current, and converts it into a motor drive circuit 10 and a solenoid drive circuit 39.5.
It is configured to supply driving power to the control circuit 5 and the display drive circuit 82 of the digital display section 4 while charging the secondary battery 81 in a floating state.

By the way, when the supply of commercial power AC is cut off due to a power outage or the like from the energized state, the control circuit 5 receives power from the backup secondary battery 81 and continues to operate. At the same time, the display drive circuit 82 is also supplied with power from the secondary battery 81, so the current time continues to be displayed on the digital display section 4 in the same way as before the power outage. However, due to the interruption of the supply of commercial power AC, the power failure detection circuit 83 inverts its output to H level. Upon receiving the H level signal, the CPU 7 stores the time of the clock circuit 6, that is, the time at the start of the power outage, in the RAM 9, and also stores the time of the power outage start in the RAM 9.
Drive signals St, S2 . Prevent output of S4. Therefore, the portion of the drive circuit 10.39.55 that requires a large current is kept inactive, and unnecessary waste of the backup secondary battery 81 is prevented.

Further, this power outage state is supplied from the power outage detection circuit 83 to the power outage time detection circuit 84, and measurement of the power outage time is started.

In such a state, when commercial power AC is supplied to the device due to recovery from a power outage, etc., the power outage detection circuit 83 inverts and outputs an L level signal to the control circuit 5, and at the same time, the power outage time detection circuit 84 detects the power outage. Stops time measurement. The CPU 7 cancels the operation inhibited state of the motor drive circuit 10 and outputs a pulse signal having a higher repetition frequency than the normal motor drive signal S1 to the motor drive circuit 10, while regarding this pulse signal as the drive signal S1. and adds it to the power outage start time stored in the RAM 9. The motor 11 receives this high repetition frequency pulse signal and displays the analog display section 1. Fast forward the type wheel 27°28.29. Continuing this operation, when the sum of the power outage start time and the pulse signal matches the value of the clock circuit 6, the output of the fast-forward pulse signal is stopped. As a result, the time displayed on the analog display section 1 and the type wheel 27.28.29
The time of 1:01 will be automatically adjusted to the current time.

At the same time, the CPU 7 cancels the inhibited state of the solenoid drive circuit 39.55, and the step-up automatic correction shown in the flowchart shown in FIG. 13, which will be described later, is started.

In this embodiment, the time when the supply of commercial power AC was cut off is stored in the RAM 9, but the total time from the start of the power outage until the power outage is restored and the time required to adjust the time is stored in the RAM 9. It goes without saying that the same effect can be obtained by calculating the value, that is, the time from the power outage to the completion of the correction, and outputting the number of pulse signals that match this time.

Next, the display of whether the side to be printed on the time card 47 is the front side 47a or the back side 47b will be explained in detail. The side to be printed is determined by the following formula using the current date and deadline date.

In other words, if the deadline is - current day, then -15≦
When A ≦ -1, use the table...■16 ≦ A ≦
When it is 30, the table...■0 ≦ A ≦ 15
When , it is tails...■-30≦A≦-16, it is tails...■. When the front and back sides are displayed on the digital display section 4 as shown in FIG. 12, the month display 4a and the day display 4b.

In front and back display 2, the front surface is "1°".

Display the back side as “2”.

For example, if the current date is August 290 and the deadline is the 20th, it is A-20-29--9, and the surface 4 is
7a. Therefore, the front/back determination signal S3 causes the digital display section 4 to display "1" as shown in FIG. 12(a).
For example, if the current date is September 12th and the deadline is September 25th, it is A-25-12-13, and the back side 4 is
7b. Therefore, the front/back determination signal S3 causes the digital display section 4 to display "2" as shown in FIG. 12(b).
In addition, when displaying the front and back sides using a lamp like the display means 3, when the front side is determined, the front and back determination signal Sea is output to light up the lamp 3a (shown in the second figure).

Further, when the back side is determined, a front/back determination signal S3b is output to light the lamp 3b.

Once it has been determined whether the side of the timecard 47 to be printed is the front side 47a or the back side 47b as described above, the next step is to determine in which column on that side the current date should be printed, and what is required to do so. It must be determined whether a step up is necessary. The calculation method for the rise number is as follows.

Now Deadline - Current date - A, IAI is the absolute value of A, B is the number of rises, then 16 ≦A≦ 30 Table 3O-A-B...
・・・・・・■0 ≦A≦ 15 Back 15-
A7B・・・・・・・・・■-15≦A≦-1 Table l
Al-1 Go B...■-30≦A≦-16 back
lAl-16-B...■.

Therefore, as shown in the first example above, when the current opening is August 290 and the closing opening is 20, A-20-29--9
When it is determined that printing is to be performed on the surface 47H, the number of steps to be raised on the surface is determined by the above formula 0. A step-up signal S4 is supplied from the control circuit 5. The top row of the printing field 47c is configured so that the number of rises is minus 0, and when printing on the second row, the number of rises is minus 1.

Also, if the current date is September 1st as shown in the second example above,
When the deadline is the 25th and it is found that A-25-12-13 should be printed on the back side 47b, the number of columns will be 15-13-2 according to the above formula 0, and the number of columns will be 2. It becomes necessary to raise the stage, and a two-pulse stage raising signal S4 is supplied from the control circuit 5.

Note that if the page to be printed includes a column corresponding to the 29th to 31st, etc., which does not exist in February or small months, the column will be blank.

Next, it may be necessary to raise multiple stages at the same time, such as when initially setting the stage position, when recovering from a power outage as described above, or when moving from a small moon to a large moon. At this time, several stage raising signals S4 are supplied, and the above-described card stage positioning device C continuously performs the stage raising operation based on these signals.

Therefore, the continuous step-up operation will be explained based on the flowchart shown in FIG. If the current stage position of the stage raising rack 54 is n, then when continuous stage raising starts, n is the stage position of the stage raising rack 54.
-0. Therefore, the stage is raised by one stage, and a question is asked as to whether or not the limit switch 72 is turned on at this time.If no, a query is made as to whether n matches the preset number of stages k, and if no, the stage is increased by one more stage. increase. The number of stages is set to k≧16 when the number of stages of the time card is set to a maximum of 16 as in this example. This is repeated until the stage raising rack 54 reaches the top stage and falls, and when the reference position is detected by the limit switch 72, the limit switch 72 becomes YES, and the above-mentioned calculation of the number of stages is performed, and the stage is raised. The count is calculated. If the limit switch becomes nmk even though the limit switch is NO, this means that the limit switch 72 is defective, and therefore, raising the level is stopped and a limit switch defect is notified at the same time.

When the number of stages to be raised has been calculated, a question is asked as to whether it is L-0 or not. If YES, there is no need to perform stage raising, and the stage raising is completed. If no, if the current step position of the step-up rack 54 is m, then m=0 when the step-up starts. Therefore, the step is raised by one step, and if the limit switch 72 is still on and the answer is YES, it means that the limit switch is defective, so the step raising is stopped and at the same time, a notification of the limit switch defect is issued. If limit switch 72 is NO, m=L
If no, the step is raised by one more step. This is repeated, and finally, when m-L is YES, the step up is completed.

(Effects 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 when performing continuous step-up operations, this can be detected and the step-up operation can be performed. The raising operation can be stopped. As a result, heat generation in the step-up drive solenoid, transformer, etc. is suppressed, and damage to parts and risk of fire can be prevented.

[Brief explanation of the drawing]

The drawings are for explaining one embodiment of the present invention, and FIG. 1 is a block diagram of a circuit that drives 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 the drive mechanism. 4 is an exploded perspective view of the clutch mechanism, and FIG. 5 is a sectional view of the transmission mechanism to the analog display section.
Figure 6 is a side view of the mechanism that drives the time type wheel, Figure 7 is a side view of the printing mechanism and card stage positioning device, Figure 8 is the front and back views of the time card, and Figure 9 is the card detection switch. FIG. 10 is a front view of the mechanism, FIG. 10 is a side view of the stage raising mechanism and card stage positioning mechanism, FIG. 11 is a front view of the operation panel, FIG. 12 is a front view showing an example of the display on the digital display, and FIG. It is a flowchart explaining continuous step-up operation. C... Card stage positioning device, C1... Lever mechanism, C2... Tier raising mechanism, 47.
... Time card, 56 ... Step up solenoid, 64 ... Return spring, 65 ... Feed claw, 67a fist ... Ratchet gear, 72 ... Reference position detection switch. that's all

Claims (1)

[Claims] 1. 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 a lever mechanism that is moved when the lever mechanism returns to its original position by the spring force of the return spring. A ratchet gear that is stepped through a pawl,
A card stage positioning device that includes a rack and pinion type stage raising mechanism that operates in conjunction with the rotation of the ratchet gear and determines the stage position where the time card is to be printed, and detects that the stage raising mechanism is located at the reference position. In a time recorder equipped with a reference position detection switch, the step-up operation is stopped if the reference position detection switch does not operate even when a preset number of steps is reached during continuous step-up operation. A time recorder step-up control method. 2. In claim 1, when the initial position detection switch continues to be activated after a preset number of stages is reached during the continuous step-up operation, the step-up operation is stopped. A time recorder step-up control method characterized by: