JPS5828229Y2 - Calendar correction device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a calendar correction device for a calendar clock.

Several types of calendar correction devices have been devised and put into practical use.

However, most of them were complicated, increasing the cost of watches and preventing watches from becoming more compact.

The present invention aims to simplify the calendar correction device, eliminate the above-mentioned drawbacks, and stabilize the function.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings, but parts not directly related to the present invention will be simplified or omitted.

FIG. 1 is an assembled plan view showing an embodiment of the present invention. In the figure, 1 is a correction wheel, 2 is a small iron wheel, the engaging part that meshes with the Hinoura wheel 3, and the crown gear part that meshes with the Tsuzumi wheel 4. Numerals 1 and 2 are coaxial, and numeral 5 is a winding stem which can be rotated independently, and one end 6c of a small iron lever is engaged in the groove 5a.

Further, a part of the winding stem 5 has a rectangular cross section, and the ratchet wheel 4 engages with this part.

As is well known, the engagement between the winding stem and the winding stem is such that the winding stem wheel can move in the axial direction of the winding stem, but the winding stem and the winding stem can rotate together in the rotating direction. It looks like this.

The small iron lever 6 is rotatable around a screw 8 that engages with a thin plate 7, and has a modified transmission wheel 9 at one end and a square hole transmission wheel 10 at the other end.
It is supported so that it can rotate and swing.

It also has spring parts 6at and 6b, and is always trying to rotate clockwise due to the spring force of the part 6a.

The section 6b constantly presses the square hole transmission wheel 10.

11 is a date wheel with 31 teeth and a date printed at 1 to 314, and 12 is a day correction transmission wheel rotatably installed on the Hino back pusher 13, which engages and disengages from the correction transmission wheel 9. It is always meshed with a jumping star wheel 15 to which a day plate 14 with the day of the week printed is fixed.

16 has a square hole and engages with a barrel stem (not shown) which engages with a mainspring (not shown) for watch operation, as is well known.

The operation will be explained below. When the watch is normally carried, the winding stem 5 is at the most pushed-in position.

At the position where the winding stem is pushed in the most, the screw wheel 4 is at the innermost position 4a due to the action of a regulating lever (not shown) that engages with the winding stem, and one tooth of the winding wheel is located at the innermost position 4a. They mesh together.

When the winding stem is rotated in this state, the tsuzu□ wheel also rotates in the same direction, causing the correction wheel 1 to rotate.

Then, the square hole transmission wheel 10 meshing with the correction wheel rotates the square hole wheel, and the mainspring winding is performed.

At this time, the original transmission wheel and the modified transmission wheel are not engaged, so the date or day of the week is not corrected.

In this state of mainspring winding, when the winding stem is rotated to the right, the square hole wheel is rotated to the left to wind up the mainspring, but when the winding stem is rotated to the left, the square hole transmission wheel acts and a reaction force is applied. This is designed to prevent the small iron lever from swinging in the oval hole while pushing the spring 6b of the small iron lever, detaching from the correction wheel 1 and the square hole wheel 16, and causing the square hole wheel to reverse.

When a square hole wheel is driven by a well-known self-winding mechanism and a square hole transmission wheel is driven from the square hole wheel, the square hole transmission wheel is also corrected by moving its axis within the oval hole of the small iron lever 6. Car 1 leaves the square hole car 16.

After separation, the square hole transmission wheel is returned to the position where it meshes with the square hole wheel and the correction wheel by the action of the spring 6b.

Next, we will explain the state of day and week adjustment when the winding stem is pulled out one step.

When the winding stem is pulled out one step, the groove 5a of the winding stem and the small iron lever 6c
The small iron lever rotates clockwise due to the force of the spring 6a of the small iron lever.

Then, the square hole transmission wheel moves to the position 10b where it is disengaged from the correction wheel and the square hole wheel, and the correction transmission wheel 9 engages with the correction wheel 1.

Even in this state, the Tsuzumi wheel is at the 4a position (11) due to the action of the regulation lever.

When the winding stem is rotated to the right in this state, the correction wheel rotates to the left, so that the correction transmission wheel 9 pivots within the oval hole provided in the small iron lever while rotating clockwise, and meshes with the date indicator 11.

When the winding stem is still rotated, the correction transmission wheel drives the mouth wheel,
Thus, day correction is achieved.

If you want to adjust the day of the week, just rotate the winding stem to the left.

When the winding stem rotates to the left, the correction wheel 1 is rotated to the right.

Therefore, the correction transmission wheel moves in the oval hole of the small iron lever 6 while rotating to the left, and meshes with the day correction transmission wheel 12.

If the winding stem continues to rotate, the day correction transmission wheel is rotated, which causes the day star wheel to rotate and the day of the week to be corrected.

Next, needle alignment will be explained.

When setting the needles, pull the winding stem one step further from the date and day adjustment position.

In this state, the regulation lever causes the Tsuzu□ car to change its position to 4b.

Then, the Tsuzumi wheel separates from the correction wheel, and the teeth at the other end of the Tsuzumi wheel mesh with the crown gear of the small iron wheel.

When the winding stem is rotated in this state, the Tsuzumi wheel 4 - Kotetsu wheel 2 -
The rotation is transmitted to the hour wheel 12, and finally, as is well known, the hour wheel 17 and the cylinder pinion 18, each having an hour and minute hand, are rotated, and the hands are set.

In this state of needle alignment, the correction wheel and the correction transmission wheel are in mesh, but since the adjustment wheel directly above the winding is not in mesh with the correction wheel, the day and day cannot be corrected at the same time as the needle is aligned.

As explained above, the calendar correction device of the present invention has an extremely small number of components compared to conventional calendar correction devices, especially the number of levers that occupy most of the flat area of a small watch, making it easier to develop small watches. This is advantageous and can also reduce watch costs.

The present invention has the above-mentioned advantages, and furthermore, the needle setting, date adjustment, day adjustment, and mainspring winding can be performed independently.

Although the above embodiments have been described with respect to a watch with a mainspring, the present invention is not limited to this, and can of course be applied to battery-powered watches without a mainspring, and thus without a square hole wheel or a square hole transmission wheel. can.

Further, in one embodiment of the present invention, the square hole transmission wheel is meshed with the square hole wheel, but the transmission wheel is supported so as not to swing relative to a small iron lever, and the transmission wheel is meshed with the Hinoura wheel. It goes without saying that it can be implemented even if it is forced to leave, and even if it is done in this way, it does not deviate from the gist of the present invention.

[Brief explanation of the drawing]

FIG. 1 is an assembled plan view showing an embodiment of the present invention. FIG. 2 is an assembled sectional view showing the mainspring winding and date adjustment in FIG. 1. FIG. 3 is an assembled cross-sectional view showing the state of day adjustment in FIG. 1; FIG. 4 is an assembled sectional view showing the state of time adjustment in FIG. 1. In the diagram, 1... modified car, 2... small railway car,
6... Small iron lever, 11... Medium wheel, 15
・・・・・・Youseiguruma.

Claims (1)

[Scope of utility model registration request] In a calendar clock that has a positioning mechanism in which the winding stem is positioned in at least two stages, a normal hand movement position and a Sunday adjustment position, and at least one swing lever for calendar correction, the winding stem is engaged with the winding stem. The Tsuzu□ wheel engages with a correction wheel that is coaxially supported on the base plate with the small iron car, and a correction transmission wheel that selectively engages with the correction wheel is swingably provided on the swing lever. At the same time, the swing lever engages with the winding stem, and when the winding stem is in the normal hand movement position, the swing lever is positioned at a first position in which the correction wheel and the correction transmission wheel do not mesh, and the When the stem 75 is pulled out to the correction position, it swings and the correction transmission wheel is positioned at a second position where it meshes with the correction wheel, and in the second position, the correction transmission wheel is moved to the second position according to the rotating direction of the winding stem. A calendar correction device for a single calendar clock, characterized in that the correction transmission wheel is configured to swing to selectively correct the day or the day of the week.