JP2502668Y2 - Reference display mechanism for thin watches - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indicator display mechanism for a thin watch.

[0002]

2. Description of the Related Art FIG. 3 is a sectional view showing a reference mechanism in a conventional analog timepiece, and in addition to an hour hand 21, a minute hand 22 and a second hand 23, a reference sword 24 showing a reference set time is provided. The reference sword 24 is fixed to a first reference gear 25 that is fitted onto the hour hand 21, and is rotated by a reference set knob (not shown) (hereinafter referred to as “correction knob”) to rotate the first reference gear 25. The reference gear 25 is rotated, the second reference gear 26 meshing with the first reference gear 25 is rotated, and an alarm is set.

Reference numeral 27 is an hour hand wheel. The hour hand wheel 27 rotates with the passage of time, and rotates a reference set wheel 28 meshing with the hour hand wheel 27. The reference set wheel 28 includes a reference cam 31 urged toward the lower plate 30 by a reference spring 29.
Is moored so as to be slidable in the thickness direction of the timepiece 21. The lower edge of the reference cam 31 is pressed against the surface of the second reference gear 26 by the reference spring 29 in the flat state, and in a hole 33 fitted on the upper surface of the second reference gear 26 in the event of an alarm. The switch 34, which is dropped and connected to the reference spring 29, is activated to generate an alarm.

[0004]

Therefore, in the above conventional timepiece, since the reference sword 24 is present, a space is required for the reference sword 24, which is an inconvenient structure for thinning. Furthermore, since the indication is made by the indication sword 24, which is shorter than the hour hand 21, minute hand 22, and second hand 23,
For example, when the hour hand 21 and the reference sword 24 overlap each other at the location where the reference sword 24 overlaps, there is a drawback that it is not clear when the reference time is.

In this respect, as in the alarm display mechanism described in Japanese Utility Model Laid-Open No. 63-90189, the second display of FIG.
It has also been proposed to provide a reference display portion on the front surface side of a member corresponding to the reference gear 26 and to provide a through hole in a dial plate facing the reference display portion. This actual exploitation 63
According to the alarm display mechanism disclosed in Japanese Unexamined Patent Publication No. 90189, a practical alarm timepiece can be realized in which the reference sword can be omitted and the thickness can be reduced.

The present invention proposes a practical alarm timepiece which can be made thin, similar to the invention described in the above-mentioned publication, and is different from the dial board in which the through-hole is provided. With the structure, we propose a guideline display mechanism that makes it easier to see the guideline display.

[0007]

[Means for Solving the Problems] That is, the present invention provides a guideline display mechanism for rotating a guideline correction shaft to perform an alarm setting and a guideline display. A pinion is attached to the dial, and an inner toothed ring that rotates in mesh with the pinion is arranged on the front surface of the dial at a position where it does not overlap with the hour hand. A reference display mechanism for a thin timepiece having a structure in which a ring with internal teeth provided is rotated on the front side of the dial to display a reference.

[0008]

In the guide display mechanism of the present invention having the above-described structure, the pinion rotates by rotating the guide correction shaft, and the ring with internal teeth meshing with the pinion rotates. In other words, the guideline display section provided on the ring with internal teeth rotates to display the guideline. And by arranging the pinion and the ring with internal teeth at a position where they do not overlap with the hour hand, it becomes easier to see and align the reference indication. It is possible to reduce the thickness.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in FIGS.

1 and 2, the basic guide mechanism is the same as that shown in FIG. 3 described above, so a detailed description thereof will be omitted. However, in the present embodiment, the guide cam 31 has the upper edge thereof. However, in normal times, the reference spring 29 presses against the surface of the reference gear existing above the drawing, and at the time of alarm,
The switch is dropped into a hole fitted in the reference gear and a switch connected to the reference spring 29 is activated to generate an alarm.

The indication of the present invention is provided by a ring 3 with rotatable inner teeth 2 arranged on the front surface of the dial 1. More specifically, 4 is a correction knob, and 5 is a reference correction shaft that is rotated by the correction knob 4. The tip of the reference correction axis 5 is projected to the front surface of the dial 1, and the protruding tip portion is formed. A pinion 7 is fixed to 6 and the pinion 7 is meshed with the ring 3 having internal teeth.

In the present embodiment, the ring 3 with internal teeth has a dial holding member 10 arranged on the outer peripheral portion of the front surface of the dial 1.
It is supported by the side portion 10b provided with the protrusion 10a and the pinion 7. That is, the protrusion 10a is formed on the surface side of the dial holding member 10, and the protrusion 10a causes the inner toothed ring 3 to move to the front side. Therefore, the horizontal movement is prevented, and an appropriate display action is provided.

Therefore, when the correction knob 4 is turned, the pinion 7 is integrally rotated, and the ring 3 with inner teeth meshing with the pinion 7 is rotated. That is, ring 3 with internal teeth
The guideline display portion 8 provided on the dial rotates on the front surface side of the dial plate 1 along the outer peripheral portion of the dial plate holding member 10 to display the guideline.

The ring 3 with internal teeth is arranged on the periphery of the dial 1 which does not overlap the hour hand 21.

In the embodiment described above, the standard display section 8
However, it is necessary to provide a standard sword because the standard display is performed by rotating along the outer periphery of the dial holding member 10 at a position where it does not overlap with the hour hand 21 on the surface side of the dial 1. Space can be omitted, the watch can be made thinner, and a guide display mechanism that is easy to see and set when setting the guide can be obtained.

In this embodiment, the internal teeth meshing with the pinion 7 are literally formed on the inner circumference of the outer peripheral bulging portion of the ring 3. However, the present invention is not limited to this, and for example, the rear side of the ring 3 ( On the side where the internal teeth are provided), the internal teeth may be provided separately from the outer peripheral bulging portion. In addition to turning the correction knob 4, it is also possible to turn the ring 3 directly to set a guide.

[0017]

As described above, according to the present invention, the reference correction shaft is projected to the front surface of the dial plate, the pinion is attached to the protruding tip portion, and the pinion is engaged with the front surface of the dial plate to rotate. The inner toothed ring is arranged at a position where it does not overlap with the hour hand, and the inner toothed ring is provided with a reference display portion. Since the display is configured and the indicator display is placed in a position where it does not overlap the hour hand, the space required for setting the indicator sword can be omitted, and the watch can be made thinner. It is possible to obtain a guideline display mechanism that is easy to see and match. Further, the standard display portion of the present invention has an advantage that it can be developed in various ways by itself, such as imparting decorative properties.

As described above, according to the present invention, it is possible to provide a guideline display mechanism in which the timepiece can be made thinner and the guideline display can be seen more easily.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an essential part of one embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of the relevant part.

FIG. 3 is a sectional view showing a conventional reference structure.

[Explanation of symbols]

 1 dial 2 internal teeth 3 ring with internal teeth 4 correction knob 5 standard correction shaft 6 protruding tip 7 pinion 8 standard display section

Claims (1)

(57) [Scope of utility model registration request] 1. A guide display mechanism for rotating a guide correction shaft for alarm setting and guide display, wherein the guide correction shaft is projected to the front of a dial plate, and a pinion is attached to the protruding tip end of the dial plate. placed in a position not polymerize toothed ring hour hand and inner rotating in mesh with the pinion to the front, the guide display section provided in the inner toothed ring, the toothed rings the character among provided with said purpose weaker display unit Board
A guide display mechanism for thin watches, which is characterized by rotating on the front side of the watch to display a guide.