JPS6156835B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a month-end adjustment device suitable for use in printing machines such as time recorders and time stamps that accurately print the day, hour, and minute.

[Prior Art] A conventional month-end adjustment device (perpetual calendar device) for printing machines that can mechanically and completely automatically adjust the end of each month, including large and small months and February of leap years, includes:
For example, if wheels for the date, month, and February are installed on the same axis, a lifter pressed against the circumferential surface of each wheel will fall into the recess formed in each wheel when the month is small. Then, descend again, 2
In normal lunar years, the lifter descends on the 28th, and only in leap years, it descends on the 29th, and when the lifter is descending,
There is a device in which the date ring is advanced rapidly to adjust the end of the month.

[Problem that the invention seeks to solve]

However, the month-end adjustment device configured as described above,
At least three wheels and a gear and pinion are required to feed and rotate these three wheels in conjunction with each other, and only in February of a leap year, which occurs once every four years.
In order to adjust the February 29th to the 28th in other years, the structure of the gear and pinion that controls and rotates the special wheel for February is extremely complex, and the number of parts is large, making it difficult to manufacture and assemble. There were problems in that the manufacturing cost was high due to the large amount of trouble involved, and that the interlocking between each wheel was likely to be misaligned, making it difficult to use it for a long period of time without adjustment. Therefore, most devices that mechanically adjust the end of the month, such as the operating device for a perpetual calendar seen in Publication of Utility Model Publication No. 53-6505,
Only the adjustment in February was done manually using a semi-automatic adjustment device.

The technical problem of the present invention is to completely automatically adjust the end of each month, including February in a leap year, by a relatively simple mechanical device consisting of a small number of parts.

[Means for solving problems]

The measures taken in the present invention to solve the above technical problems are as follows.

(1) Turn the calendar disk to the 29th and 30th on the date wheel.
It is configured so that it meshes with a pinion that is fed and rotated only for a total of 4 days corresponding to the 1st, 31st, and 1st, making 4/48 rotations every month and one rotation in a year.

(2) On the side surface of the calendar disc, protrusions are provided on the peripheral surface portions corresponding to the day after the end of each small month of the calendar disc, and among these protrusions, one for February is provided. To provide a circular guide in which a convex part is formed to be one day larger than other convex parts.

(3) Similarly, on the side of the calendar disk, there is a wheel that meshes with a fixed gear and revolves around this fixed gear once a year as the calendar disk rotates.
The pinion rotates 1/4 of its axis and returns to its original position after 4 years, while the February pinion has a total of three protrusions spaced 90 degrees apart on its circumference for February adjustment. , be installed so that as the calendar rotates, each of these protrusions for February adjustment will line up with the protrusion for February on the circular guide and protrude at the position corresponding to February 29th on the calendar disk.

(4) On the circumferential surface of the circular guide, there is a lever for advancing the date wheel when pushed by the convex portion of the circular guide and the convex portion of the February pinion, and a minute feed lever for the minute type wheel. The trigger detection lever that is linked to the trigger is pressed.

However, in this case, the day after the end of each minor month means the 31st day that does not exist on the calendar in the case of April, June, September, and November, and the 30th day in the case of February. means. Furthermore, forming the convex portion for February to be one day larger than the other convex portions means providing a convex portion of a size that extends over February 30th and 31st, which similarly do not exist on the calendar.

[Effect]

The means consisting of the above elements (1) to (4) operate as follows.

According to the factor (1) above, the calendar disk meshes with the pinion and always rotates 4/48 times during the four days from the 29th to the 1st of the date ring, regardless of the size of the month, and this rotation continues for one year. Repeat 12 times to complete one revolution.

According to the factor (2) above, for each minor month of April, June, September, and November, there is a portion corresponding to the 31st day that does not exist on the calendar, and 2
On the moon, convex portions of the circular guide are protruded at the portions corresponding to the 30th and 31st days, respectively.

According to the factor (3) above, similarly for the calendar disk, in February in non-leap years, the convex part of the February pinion is located at the position of February 29th, which does not exist in the calendar, on the circular guide. It protrudes in line with the convex part of
This protrusion does not protrude during leap years, which occur once every four years.

According to the factor (4) above, April, June, September,
At the end of each small month in November, the trigger detection lever is pushed by the convex part of the circular guide at the portion corresponding to the 31st, so the date wheel is linked to the minute advance lever for the minute wheel. Fast forward and immediately adjust to the 1st of the next month. In addition, at the end of February other than leap years, the date ring is set to February 29th and 30th by the two-day convex part of the circular guide and the convex part of the February pinion.
It is fast-forwarded for 3 days corresponding to the 31st of the following month, and the adjustment is immediately made to the 1st of the following month, and the convex part of the February pinion does not protrude in February of a leap year.
The date wheel will receive regular day-scheduling until February 29th.
Fast-forwarding is done by two days corresponding to February 30th and 31st, which allows the end of each month, including February in leap years, to be fully automatically adjusted.

As described above, the above-mentioned technical problem can be solved by the above-mentioned means, and the problems of the conventional technology can be solved.

〔Example〕

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In Figure 1, 1, 1 is a fixed frame, 2
3 indicates a type shaft installed between the frames 1 and 1, and 3 represents a mounting shaft installed parallel to the type shaft 2 between the frames 1 and 1. The type shaft 2 has a minute type wheel 4.
, a time type wheel 5 and a date type wheel 6 are mounted side by side, and among these type wheels, both the minute and date type wheels 4 and 6 are freely attached to the type shaft 2, but the time type wheel 5 is fixed to the type shaft 2 and rotates integrally with the type shaft 2.

As shown in FIGS. 1 and 2, a feed ratchet wheel 4a and a time feed cam disk 4b are fixed concentrically to one side of the above-mentioned minute type wheel 4, and the feed ratchet wheel 4a is connected to the type shaft 2. The feed pawl 7a (see FIGS. 1 and 6) of the attached feed lever 7 is engaged. The minute feed lever 7 is the operating lever 7b on the bottom.
The minute type wheel 4 can be rotated once per minute by an operating mechanism (not shown) connected to it, and the minute type wheel 4 can be advanced every minute by the feed pawl 7a. Further, in FIG. 6, reference numeral 8 denotes an operating lever for adjusting the end of the month, which is also attached to the bottom of the minute feed lever 7, and the front edge of this lever 8 is provided with an engaging protrusion 8a projecting therefrom.

1 and 8, reference numeral 9 denotes a time feed lever with left and right arms 9a, 9b pivotally connected to the mounting shaft 3, and a cam of the dividing wheel 4 on the root end side of one arm 9a. Pressure piece 9 that receives pressure from disk 4b
A time feed pawl 10 that engages with a time feed ratchet wheel 11 fixed to the other end of the type shaft 2 is attached to the tip of a mounting plate 9d connected to the root end of the other arm 9b. ing. Therefore,
The time advance lever 9 rotates the minute type wheel 4 once, i.e.
After being fed 60 times (60 minutes), it rotates once by the pressing action of the cam disk 4b, and the time feed pawl 10 advances the time feed ratchet wheel 11 by one tooth, and the time type wheel 5 fixed to the type shaft 2 is rotated once. can be advanced by one pitch. The ratchet car 11 above has a total of 24
A number of ratchet teeth are formed, and when the time feed pawl 10 feeds 24 times, the type shaft 2 and the time type wheel 5 rotate exactly once.
In addition, the total number from 00 to 59 is written on the circumference of the above-mentioned printing wheel 4.
60 molecules (not shown) are formed at equal intervals,
Further, on the circumferential surface of the time type wheel 5, time characters 00 to 23 are formed at equal intervals.

In FIG. 1 and FIG. 7, 12 is a date feed cam disk fixed to the type shaft 2 side together with the time feed ratchet wheel 11, and 13 is a date feed cam disk fixed to the type shaft 2 side, and 13 is a date feed cam disk fixed to the type shaft 2 side together with the time feed ratchet wheel 11.
b shows the date lever pivotally mounted on the mounting shaft 2. On the root end side of the other arm 13b of the date lever 13, there are formed a pressed piece 13c that receives the pressure of the cam disc 12, and a lever 13d that allows the date lever 13 to be manually fast-forwarded. Further, a date feed pawl 14 is attached to a plate 13e connected to the root end side of one arm 13a.

A day feed ratchet wheel 15 and an intermittent feed gear 16, which are integrally constructed, are concentrically attached to the side surface of the date wheel 6, which has date letters 01 to 31 formed at equal intervals on its circumference. The date feed pawl 14 is engaged with the ratchet wheel 15. Day feed nail 1
The date feed lever 13 to which numeral 4 is attached moves once a day under the pressure of the date feed cam disc 12, and can advance the date wheel 5 by one pitch a day.
The intermittent feed gear 16, which rotates integrally with the date wheel 5, has a substantially disk-like shape as a whole, and corresponds to the 29th, 30th, 31st, and 1st letters of the date wheel 5. A total of four feed teeth 17, which are integrally formed, are attached to the side positions.

In FIGS. 1 and 3, the reference numeral 18 indicates a pinion rotatably mounted on the mounting shaft 3, and one side of the pinion 18 has a normal gear thickness. A total of four thick driven gears 18a
. . . and a total of four thin driven gears 18b whose gear thickness is cut in half (shown with diagonal lines in Fig. 3 for convenience) are alternately divided into eight equal parts. The pinion 18 has two
The missing part of the thin driven gear 18b corresponds to the circumferential surface of the intermittent feed gear 16 between the 28th and the 28th, but on the 4 days of the 29th, 30th, 31st and 1st of each month. The driven gears 18a and 18b are engaged with the feed teeth 17 of the intermittent gear 16 and are rotated every day. Further, the pinion 18 is engaged with a gear 19a of a calendar disk 19 attached to the type shaft 2 on the other side circumferential surface of the pinion 18, so that the calendar disk 19 is rotated in accordance with the feeding and rotation of the pinion 18.
An interlocking gear 18c is formed that performs pitch feeding only on the four days of the day, the 30th, the 31st, and the 1st. The calendar disk 19 is divided into 48 equal parts, and rotates 4/48 pitches per month, or 1/12 pitches, and rotates once per year (1/12 x 12 months) in conjunction with the pinion 18. Calendar numbers (not shown) are engraved on one side. If the last month of each month is a major month, the calendar numbers are, for example, 1/1~
28, 1/28, 1/30, 1/31, etc. are displayed equally in 4 blocks, and in the case of a small month, for example, from 4/1 to
It is displayed equally in three blocks: 28th, 4/29, and 4/30, and the part corresponding to the next 31st is left blank. In addition, in the case of February, 2/1 to 28 and 2/29
Only the blocks are displayed equally, and the next two days corresponding to the 30th and 31st are blank columns, and each calendar number above has a total of 6 blank columns for the last day of each small month. It is displayed in 48 equal parts in order according to the calendar. In FIGS. 1 and 4, reference numeral 20 denotes a generally collar-shaped circular guide concentrically protruding from the other side of the calendar disk 19;
On the circumferential surface of 0 are markings for February, April, and 6, corresponding to the blank column at the end of each small month of the calendar disk 19.
Each convex part 20a, 20 for month, September, and November
b, 20c, 20d, and 20e are provided in a protruding manner, and among these convex portions, the February convex portion 20a in particular is formed one pitch larger than the other convex portions so as to span the two blank days. . Furthermore, in the figure, 21 is the other side of the calendar disk 19, and may also be February 29 of the calendar.
With the pinion shaft installed in the part corresponding to the day, 22
is a February pinion attached to this pinion shaft 21. The circumferential surface of the February pinion 22 is divided into four equal parts, and three of the parts have convex parts 22a, 22 for February adjustment.
b and 22c are provided protrudingly, and the remaining one has a protrusion 22d missing for use in leap years. Also, 22
e indicates a planetary gear formed concentrically on the side surface of the February pinion 22.

Next, in FIGS. 1 and 5, 23 is a fixed plate attached to the type shaft 2, and on the side of this fixed plate is a month-end fixed gear 23a with which the planetary gear 22e of the February pinion 22 meshes. It is attached concentrically to the calendar disk 19. The month-end fixed gear 23a is the sun of the planetary gear 22e, and the planetary gear 22e and the month-end fixed gear 23a
The number of teeth ratio is such that the February pinion 22 makes one revolution in one year around the month-end fixed gear 23a according to the intermittent feeding of the calendar disk 19, and rotates 11/4 times around its axis, and makes four revolutions, that is, in four years. In order to return to the original position, for example, the planetary gear 22e is configured with 12 blades and the month-end fixed gear 23a is configured with 15 blades, and the February pinion 22 is configured with 15 blades.
Once a year, one of the February adjustment protrusions 22a is placed on the part of the calendar disk 19 corresponding to February 29th.
22b or 22c is positioned so that its tip protrudes above the circumferential surface of the circular guide 20 provided on the calendar disk 19, and in leap years, the missing portion 22d is
The system is such that it is located on the 29th day of the month.
In addition, as mentioned above, the height of the February adjustment convex part 22a protruding on the circumferential surface of the circular guide 20 is at the same level as the convex part of the circular guide 20 (particularly the February convex part 20a). It is configured to be. (See Figures 4 and 12) In Figures 1 and 9, 24 is a trigger detection lever rotatably attached to the mounting shaft 3, and 24a is a trigger detection lever that protrudes from one arm of this lever 24. Indicates the configured trigger. Trigger detection lever 24
The trigger 24a is constantly moved by the circular guide 2 as shown in FIG. 10 under the pulling action of the spring 25.
0, and as the calendar disk 19 and the February pinion 22 rotate, each convex portion 20a or 22a of the calendar disk 19 and the February pinion 22 engage the trigger 24.
When the trigger 24a is moved to the position a, the trigger 24a is pushed by these convex parts, and the entire trigger detection lever 24 is moved around the mounting shaft 3 as shown in FIGS. 11 and 12. It is designed to rotate in a clockwise direction. In addition, in FIG. 7 and FIGS. 10 to 12, 13f is a locking protrusion protruding from the upper edge of the other arm 13b of the date feed lever 13, which is rotated as described above. The trigger detection lever 24 moves the back surface 24b of the trigger 24a to the first position.
As shown in FIG. 1 and FIG. 12, the lever 7 is locked on the locking protrusion 13f, and the bottom portion 24c side is rotated once per minute. The date feed lever 13 is substantially connected to the division feed lever 7 by being located on the rotation path of the engaging protrusion 8a protruding from the month end adjustment operating lever 8.

Since the present invention is constructed as described above, the minute type wheel 4, hour type wheel 5, and date type wheel 6 mounted on the type shaft 2 are connected to the minute feed lever 7 and the hour feed lever 9.
By the action of the date feed lever 13, minute feed, hour feed, and day feed are carried out in sequence, so that type that matches the current date, hour, and minute can be set at the printing position. In addition, the feed teeth 17 of the intermittent feed gear 16 that rotates together with the date type wheel 6 are connected to the 29th day of each month.
Pinion 18 only for 4 days: Sunday, 30th, 31st, and 1st
The calendar disc 19 that meshes with this pinion 18 is similarly rotated by 1/12 from the 29th to the 1st of each month, and each convex part 20a to 20e of the circular guide 20 protruding from the side of this calendar disc 19 is the last day of each minor month, i.e. the 30th and 31st for February,
Trigger 24a on the day corresponding to the 31st for other small months
Press the calendar disk 19, especially for February.
The February pinion 22 installed when corresponding to February 29th of February revolves around the fixed gear 23a at the end of the month once in a year, and also rotates 11/4 times around its axis and rotates four times (4 revolutions).
Since the February pinion 22 is constructed in such a way that it returns to its original position when the
The month adjustment protrusions 22a, 22b, and 22c press the trigger 24a each year in order on February 29th, and in February of a leap year, the missing portion 22d where the protrusions are not formed is on February 29th. position and adjust the end of February, including leap years.

Each of the above convex portions 20a to 20e and 22a to 22c
When the trigger 24a is pressed by , the trigger detection lever 24 rotates and connects the date lever 13 to the minute lever 7, so it is linked to the minute feed rotation of the minute feed lever 7 once per minute. Then, the date advance lever 13 advances the date wheel 6. Therefore, at the end of February, which is not a leap year, there are three days on the 29th, 30th, and 31st.
Days are fast-forwarded, and in leap years, the 30th and 31st are fast-forwarded to adjust the end of the second day, and each of the minor months other than February, i.e., April, June, September, and November, is At the end of the month, the 31st is quickly forwarded to adjust the end of the month, allowing you to set the correct date type in the print position.

〔effect〕

As described above, according to the month-end adjustment device for printing machines according to the present invention, the end of each small month including February of a leap year is automatically adjusted, the date wheel is fast-forwarded, and the date wheel is fast-forwarded at the beginning of each month. It is possible to set the correct date print at the printing position and use it for printing, but in the present invention, the device that performs the complicated adjustment described above is mainly composed of three feed levers, an intermittent feed gear, pinion, calendar disk, February pinion,
Since it is composed of a very small number of parts, such as the fixed gear and trigger detection lever, manufacturing and assembly are easy and costs can be reduced.Moreover, the main parts, the intermittent feed gear and the February pinion, can be installed. The calendar disc and fixed gear are mounted on the type shaft to which each type wheel is attached, and all other parts are also mounted on the mounting shaft parallel to the type shaft.
It has the advantage of being able to be assembled compactly as a whole.

Further, in the present invention, the intermittent feed gear and the calendar disk are connected by a pinion, and furthermore, two
Since the moon pinion is also connected to a fixed gear, there is no need to worry about misalignment between the various parts, and once set, it has the advantage of being able to be used for a long period of time without any adjustment. It is suitable for use in printing machines such as time stamps.

[Brief explanation of the drawing]

Fig. 1 is a partial cross-sectional front view of the entire month-end adjustment device for printing machines according to the present invention, Fig. 2 is a side view of the minute type wheel, and Fig. 3 is a side view of the intermittent feed gear and pinion attached to the date type wheel. Figure 4 is a side view of the calendar disk and February pinion, Figure 5 is a side view of the fixed plate, Figure 6 is a perspective view of the minute feed lever, Figure 7 is a perspective view of the date lever, and Figure 8 is a side view of the calendar disk and February pinion. The figure is a perspective view of the time feed lever, FIG. 9 is a perspective view of the trigger detection lever,
FIGS. 10, 11, and 12 are side views illustrating the function of the trigger detection lever. 2...Print wheel, 3...Mounting shaft, 4...Minute print wheel, 5...Hour print wheel, 6...Date print wheel, 7...
...Minute feed lever, 9...Hour feed lever, 13...
...Date feed lever, 16...Intermittent feed gear, 17...
...Feed dog, 18...Pinion, 19...Calendar disk, 19a...Gear, 20...Circular guide,
20a to 20e...Protrusion, 22...February pinion, 22a to 22c...February adjustment protrusion, 22d
...Missing, 23a...Fixed gear at the end of the month, 24...Trigger detection lever.

Claims (1)

[Claims] 1 The 29th, 30th, 31st of the date wheel, and 1
The end of each small month of the calendar disk is attached to the side of the calendar disk, which rotates 4/48 times each month and once a year, by engaging a pinion that is rotated for a total of four days corresponding to days. Convex portions are provided protrudingly on the peripheral surface portion corresponding to the next day, and among these convex portions,
A circular guide is provided with a convex portion for February that is one day larger than the other convex portions, and a circular guide is also provided on the side of the calendar disk that meshes with a fixed gear and rotates as the calendar disk rotates. It rotates once and a quarter around its axis once a year, and
While performing a rotational movement that returns to its original position after 4 years, the February pinion, which has a total of three protrusions for February adjustment at 90° intervals on its circumference, adjusts each of these as it rotates. The protrusions for February adjustment are sequentially installed in line with the protrusions for February on the circular guide so that they protrude at the position corresponding to February 29th on the calendar disk. When pushed by the convex portion of the guide and the convex portion of the February pinion, a trigger detection lever is pressed, which causes the lever for advancing the date wheel to be linked to and interlocked with the minute advance lever for the minute dial. A month-end adjustment device for a printing machine, which is characterized by: