JPS5856439B2 - clock feed mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clock feeding mechanism having a rotating body that is positioned and driven intermittently, and particularly relates to a conventional calendar feeding mechanism, a calendar wheel positioning mechanism, and a calendar correction mechanism. The aim is to synchronize the calendar feed mechanism and the calendar correction mechanism, thereby making the space of the watch more efficient and eliminating almost no loss of torque during calendar feeding.

It is well known that in the past, the calendar feed, calendar correction, and calendar wheel positioning mechanisms were located on each side, occupying a very large space on the clock.

Furthermore, the number of parts that make up these watches is large, which is disadvantageous in terms of the cost of the watch.

On the other hand, electronic wristwatches have been expanding their share of the market in recent years, and analog crystal wristwatches in particular have achieved remarkable results.

However, the biggest drawback of this watch is that it requires battery replacement, and many improvements have been made to extend the time between battery replacements.

Examples include improving batteries, increasing the efficiency of motor circuits, and reducing torque loss during calendar feed.

Although some of the previous two items have already been implemented, this reduction in torque loss has not yet been implemented.

This is the Special Publication No. 51-9547 and the Special Publication No. 44-2193.
This is because, like No. 9, it depends to some extent on spring force or it is impossible to correct the calendar.

In addition, many other improvements have been made, but they cannot be said to be perfect because of the problem of tilting and the space taken up by the above-mentioned three-mechanism clock.

In particular, those that rely on spring force are not suitable for extending battery life.

The present invention solves the above-mentioned problems and will be described in detail with reference to the drawings showing embodiments of the invention.

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is a sectional view thereof.

1st. In Fig. 2, 1 is a main plate, 2 is a date wheel, which shows the date for 31 days, has a corresponding arc 2a and a recess 2b, and has a main plate 1 or an opening installed on the main plate 1. Guided by a vehicle guide board (not shown).

3 is an hour wheel, which is rotated by a rotor through a gear train at a speed of one revolution every 12 hours.

The rotation is transmitted to the date wheel 5 via the intermediate wheel 4.

The intermediate wheel 4 is integrally constituted by an intermediate gear 4a that is always meshed with the hour wheel 3 and an intermediate pinion 4b that is meshed with the date wheel 5, and uses the extraction pin 1a of the main plate 1 as a rotation axis.

The date wheel 5 has protrusions 6a at both ends of a spring 60 fixed to it.

7 is a date pawl, which includes a pawl portion 7a, a positioning portion 7b for the date dial 2,
A heart cam 7c, a contact portion 7d, and a relief portion 7e provided so as not to interfere with the date wheel 2 when setting the date.

A space 7f for the same purpose, a slope 7g that bends the claw portion 7a perpendicularly to the plane of the main plate 1 when the date wheel 5 is rotated counterclockwise, and a transmission that engages with a date adjustment gear train (not shown). It is constructed in one piece from the factory vehicle 7h.

8 is a shaft installed in the main plate 1, and a date wheel 5 and a date pawl 70
It is the axis of rotation.

At this time, the date wheel 5 is supported by the date pawl 7, and both have play.

The claw portion 7a has spring properties and returns to the previous state even if it is bent as described above.

The positioning portion 7b is formed of a circle centered on the shaft 8, and the heart cam 7c is engaged with the spring 6.

The adjustment portion 7d is used when the date feed pawl 7 rotates clockwise to send the date dial 2 or when it rotates in the same direction to adjust the date.
The circular arc 2a formed on the date dial 2 has approximately the same center and curvature as the positioning portion 7b. ing.

Furthermore, all of the above-mentioned parts are included in the dial of main plate 1 (not shown).
It is placed on the side.

Next, each operation will be described.

During normal carrying, the rotation of the hour wheel 3 is received via the intermediate wheel 4, and the date wheel 5 rotates at a speed of one rotation every 24 hours.

The time wheel 2 other than the date indicator is positioned by the relationship between the circular arc 2a and the positioning portion 7b.

When the date is set, the date wheel 2 is moved clockwise by one tooth by the claw portion 7a.

At this time, the date dial 7 is provided with an escape part 7e and a space 7f so that the date indicator 2 and the positioning part 7b do not interfere with each other.

Further, the date wheel 5 and the date pawl 7' are connected to each other through the spring 6 and the heart cam 7c as shown in the figure, so that the date can be set.

This also applies to needle alignment.

However, in the case of reverse hand setting in which the hour wheel 5 is rotated counterclockwise, the claw portion 7a is bent when the date wheel 2 and the slope 7g are engaged.
The date wheel 2 is not rotated.

Therefore, the date can also be corrected by repeating the forward and reverse hand settings.

This needle setting is the same as before; winding stem, thrush wheel, small iron wheel,
This is done via a sun wheel (not shown) or the like.

Next, when adjusting the date, the transmission wheel 7h is rotated from the winding stem via the date adjustment gear train.

At this time, the heart cam and spring 6 serve as clutch means.

Therefore, the date can be quickly corrected by rotating the date pawl 70 clockwise, and at this time the correction wheel (
Any rotation speed (1
/2 to 1 or more than 1).

Further, the date cannot be corrected by rotating the date pawl 7 in the counterclockwise direction.

However, this is not the case if the slope 7g is not provided.

And when the date correction is completed, spring 6 and heart cam 7
Due to the relationship c, no matter what their mutual positional relationship is, they will return to the position shown in the figure, so the position of the hour wheel 3 and the position of the date feed pawl 7 will not be deviated, and the date feed completion time can be adjusted. If it is set to 0:00, even if the date is adjusted, the date adjustment can be completed at the set time.

At this time, the output torque or pulling torque of the motor converted by the hour wheel 3 is T1, and the spring force F of the spring force W1 of the spring 6 is T>
The relationship is W>F.

Therefore, it is possible to synchronize the date adjustment mechanism, the date adjustment mechanism, the date adjustment mechanism and the slot positioning mechanism, and furthermore, the three mechanisms described above can be synchronized, and furthermore, by forming one assembly, it is advantageous in terms of space.

At this time, the heart cam 7c is preferably made of a metal material in terms of strength, but it is advantageous in terms of cost if it is integrally molded with the date feed pawl 7 from plastic or the like.

Further, the claw portion 7a can be made of a rigid body, and in this case, the date can be corrected both in advance and in lag.

The circular arc 2a formed on the date dial 2 does not need to have approximately the same center and curvature as the positioning part 7b, and the positioning of the date dial 2 is possible as long as the positioning part 7b and the circular arc 2a are in contact at two or more points. There is no need to arrange anything other than the date indicator 2 and date indicator 7 on the dial side of the main plate 1.

Further, it is not necessary to use the intermediate wheel 4, and the date wheel 5 may be directly engaged with the hour wheel 3.

Furthermore, by arranging the date wheel 5 at a position where it does not overlap with an external operating member such as a winding stem, the device can be made thinner.

FIG. 3 is a plan view showing an example of application of FIGS. 1 and 2. FIG.

In Figure 3, 9 is a date wheel that rotates once every 48 hours;
The date pawl 10 includes a pawl portion 10a, a slot positioning portion 10b,
A cam 10c that positions the date wheel 9 and the date pawl 10 at two locations, a contact portion 10d, a relief portion 10e, and a space 10f.
, and the transmission car 10h.

These have two shapes symmetrical about the axis of rotation.

Reference numeral 11 denotes a spring, and the date wheel 9 is rotated by projections 11a on both ends of the spring.
It is formed integrally with the

The cross-sectional relationship of each part, the operations and functions in hand setting and date correction are the same as those in FIGS. 1 and 2, and therefore their explanations will be omitted.

In this case, the displacement of the spring is smaller than in the embodiment shown in FIG. 1, and a more stable mechanism can be obtained.

FIG. 4 is a plan view showing another embodiment of the present invention, and FIG. 5 is a sectional view thereof.

4th. In FIG. 5, numerals 1 and 2 are the main plate and the head wheel, respectively.

12 is a date pawl, which includes a pawl portion 12a, a positioning portion for the date wheel 2,
It is composed of a relief part (the above is the same configuration as the above-mentioned embodiment, so the explanation is omitted), a planetary wheel 13, and a shaft 14, and the planetary wheel 1
3 is a shaft 14 that is pivotally supported on the date pawl 12.

Reference numeral 15 denotes a date wheel, which is connected to intermediary wheels such as an hour wheel and a day wheel, which rotate under the drive of a rotor so as to rotate once every eight hours.

The date wheel 15 has a sun gear 16 and meshes with the planet wheel 13.

A ring gear 17 has an internal gear 17a and a transmission wheel 17b.

The outer periphery of the ring gear 17 is supported by a bearing 18.
It is arranged almost concentrically with the sun gear 16.

Further, the internal gear 17a meshes with the planet wheel 13.

At this time, the relationship between the sun gear 16, the planet wheel 13, and the internal gear 17a is such that the date pawl 12, which pivotally supports the planet wheel 13, rotates once every three rotations of the sun gear 16 and the internal gear 17. It is set to .

19 is a synchronous wheel, has a heart cam 20, and transmission wheel 17b
meshes with (teeth ratio of synchronous wheel 19 and transmission wheel 17b is 3:1)
The heart cam 20 is positioned by a spring 21 as shown in the figure at times other than when adjusting the date or changing the date (when normally carried).

The spring 21 is bent in an L shape, and the bent portion is fixed to the base plate 1 with a pin 22.

Therefore, when normally carried (the state shown in the figure), the transmission wheel 17b is positioned via the heart cam 20 positioned by the spring 21 and the synchronous wheel 19.

Reference numeral 8 denotes a shaft mounted on the base plate 1, and the operation of the 0th order, which is the rotation axis of the date wheel 15 and the date pawl 12, will be explained.

Normally, when carrying the phone, the 1st button is used when not sending the date. As explained in FIG. 2, the date wheel 2 is positioned, and the date wheel 15 is driven at a rotational speed of one revolution every eight hours when the date is set.
The sun gear 16, which is integrated with the
Complete the date transfer at the same time.

Also, when adjusting the date, the rotation of the winding stem is transmitted to the synchronous wheel 19 via the thrush wheel and the date adjustment gear train (the rotation is synchronized with the thrush wheel so that the synchronous wheel 19 rotates more than 1/2 rotation for one rotation of the thrush wheel. car 1
9 or the tooth number ratio of the synchronous pinion 19a provided integrally therewith).

Therefore, when the synchronous wheel 19 rotates once, the ring gear 17 rotates three times, and the date pawl 12 rotates through the internal gear 17a and the planetary wheel 13.
Rotate once to adjust the date.

At this time, the sun wheel 16 does not move and the planet wheel 13 acts as a clutch means.

The positional deviation between the hour wheel and the date feed pawl 12 caused by the date adjustment is corrected by the heart cam 20 and the spring 21.

At this time, the date adjustment direction can be set in two directions: advance and lag, but when it is set in only one direction, the spring force F of the date advance pawl 12 and the spring force W of the spring 21 are only in the relationship F<W. It is only necessary to take this into account, and a function with more stable operation can be obtained compared to the embodiment shown in FIG.

With the configuration as described above, the present invention can fully satisfy the above-mentioned objects.

In the example, a date clock was described, but it can also be applied to a clock that displays the day, month, year, am, and pm. It can also be applied to items that require correction, feeding, and positioning, and it is also possible to provide a notch in the feed pawl and synchronize the pawl, notch, and jump control member (separately arranged). 4421939, which includes a jump control member, a removal part, and a drive finger, and allows quick correction of the drive finger).

It is also possible to use the positioning portion of the father's day feed pawl to position the day wheel, and synchronize the pawl portion with the date feed pawl in order to advance the day.

At this time, the number of teeth on the day star wheel needs to be approximately the same as the pitch of the head wheel, so the number of teeth must be a positive multiple of 7.

Furthermore, the rotation speed of the date wheel when carried is usually 1 per 24 hours.
The rotation is one rotation every 8 or 12 hours, or 24 hours.
When the clock rotates once per hour, by providing two or three feed claws, it is possible to display the day of the week in two or three languages, and it is also possible to display morning and afternoon.

Furthermore, if the date wheel rotates once every 12Xn (n is a positive integer) hours, the stability of operation can be increased.

Therefore, the rotation speed of the date wheel should be changed from 2 to 12 or 12Xn.
(n is a positive integer) It rotates once per time, and its range of applications can be expanded depending on the purpose.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention. FIG. 2 is a sectional view of FIG. 1. Figure 3 shows the 1. FIG. 3 is a plan view showing an example of application of FIG. 2; FIG. 4 is a plan view showing another embodiment of the present invention. FIG. 5 is a sectional view of FIG. 4. 2...Date wheel, 2a...Circular arc, 2b...
...Concavity, 5°9.15...Date wheel, 6
, 11, 21... Spring, 6at 11a...
···protrusion,? , 10, 12... Intermediate feed claw, 7a
, 10a, 12a---Claw portion, 7b. 10b...Positioning part, 7c, 20...
・Heart cam, 10c...cam, 7d, 10d
...Attack part, 7e, 10e...Escape part,? f, 10f...space, 7g...
...Slope, 7h, 10h, 17b...transmission car,
13... Planetary wheel, 14... Axis, 16.
...Sun gear, 17...Ring gear, 1...Receiver, 19...Synchronous wheel, 22...Pin. 7a... Internal gear, 18... 19a... Synchronous kana,

Claims (1)

[Claims] 1. In a watch that has a rotating body that is driven intermittently,
The quick correction means and the drive means for the rotating body have a common feeding member, and the feeding member has a clutch means that is operated independently from the drive means during the quick correction, and
A timepiece feeding mechanism characterized in that it has a cam means for ensuring that the relative alignment with the driving means is always constant at the time when the quick adjustment is completed.