JP2552000Y2 - Analog clock with display car - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an analog timepiece having a display wheel such as a date wheel.

[0002]

2. Description of the Related Art As shown in FIGS. 3 and 4, the date indicator 2 of a conventional analog timepiece has a date indicator 2 rotatably supported on a main plate 1 by a date indicator holder 3, as shown in FIGS. The date indicator 2 is rotated along the rotation guide portion 1a of the main plate 1, and the date jumper 4 determines the position of the date indicator. The date indicator 2 is configured to be rotated by the claw 5a of the date indicator wheel 5. The rotation guide 1a of the main plate 1 is configured to be in contact with the tip of the date wheel by the date jumper 4, and the rotation guide 1a of the date wheel by the date jumper 4, the pinch window 6, the calendar correction wheel 10, and the like. Was cut off.

[0003]

However, in the conventional analog timepiece having the date indicator rotation guide structure, the date indicator is positioned by the date jumper, so that the date indicator has a high rotation torque and a high torque. Driving force was required, and the time required for day feeding was long for deceleration in the wheel train to secure high torque. Also, since a part of the rotation guide is cut, the play between the date indicator and the rotation guide is not constant, and the rotation of the date wheel and the rotation guide during the rotation of the date indicator is reduced. In the case where the daily feed resistance value is not stabilized due to the change, or in the case of low torque driving, the phenomenon has been stopped due to the catching phenomenon. Another problem is that the day feed resistance when the tooth tip of the date wheel passes the boundary between the cut portion of the rotation guide portion and the rotation guide portion has a peak value, and the entire day feed resistance value is maintained at a low level. Had become.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention shifts the plane position of the pinwheel and the tooth tip of the date indicator, eliminates the date jumper for positioning the date indicator, and removes the rotor. By positioning the date indicator with the date indicator using the index torque, the rotation guide portion of the date indicator is secured over the entire circumference except for the date indicator.

[0005]

As described above, the rotation guide portion is secured on the entire circumference except for the date dial wheel portion, the date index wheel is positioned by the date wheel using the rotor index torque, and the date jumper is deleted. In addition, the rotation of the date wheel can be stabilized, and the daily feed resistance can be reduced. Further, by eliminating a part of the rotation guide portion, the date feed resistance value of the date indicator can be kept constant at a low value.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on embodiments. FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is a sectional view of the embodiment of the present invention. The date indicator 2 is assembled with a pivotable guide 1a of the main plate 1 and a pivotable gap. The date wheel 5 and the tooth portion 2a of the date wheel 2 mesh with each other.

A date wheel holding device 3 having a tenon receiving portion of a date driving wheel and fixed to the main plate 1 by screws or the like has a date wheel 2
Is held in a rotatable state. The date wheel 5 rotates the rotation of the date block driving motor block from the rotor 8 to the speed reduction wheel 9.
a and 9b. The reduction gears 9a, 9b and the date wheel 5 allow the date wheel 2 to be driven by the rotor 8 and the index torque of the rotor 8 generated by the motor block.
Is configured to stabilize the position.

The date wheel 2 can be held by a calendar back plate or the like.

[0009]

[Effect of the Invention] As described above, in the analog timepiece of the present invention, the date jumper is eliminated, the date dial is set to a date wheel, the position of the pinwheel is shifted from the date wheel guide, and the date wheel is rotated. By securing the guide portion over the entire circumference excluding the date dial portion, the date feed resistance of the date indicator can be reduced and stabilized. In addition, by using a date wheel to perform positioning instead of the date jumper, the number can be reduced to the date jumper. And there is an effect that the strength of the ground plate around the window can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view showing the structure of the present invention.

FIG. 2 is a sectional view showing the structure of the present invention.

FIG. 3 is a plan view showing a conventional structure.

FIG. 4 is a sectional view showing a conventional structure.

[Explanation of symbols]

 1 Ground plate 2 Day wheel 3 Day wheel presser 5 Day wheel 7 Motor block 8 Rotor

Claims (1)

(57) [Scope of request for utility model registration] 1. A date wheel rotatably guided and supported by a substrate such as a main plate or a calendar back plate, and a date wheel rotatably supported on a substrate and engaged with teeth of the date wheel to rotate the date wheel. days and driving wheel for the positioning of the date indicator causes the movement, Toka Nichisha presser for pressing the date indicator in a rotatable state
The rotation guide portion provided on the substrate of the date indicator
It is formed over the entire circumference except for the part where the date wheel is located, and
The indexing of the rotor that drives the date wheel
An analog timepiece with a display car, which is performed using luc .