JPH10197661A - Analog watch without hand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple, fashionable and new analog watch which has no hour hand and minute hand supported by a conventional central drive shaft and indicates time with revolution angle and rotation angle of a time indication member provided on the dial surface revolving and rotating simultaneously. SOLUTION: Under a circle moving plate 1 fixed at the center to a rotational drive shaft 4 and rotating clockwise one turn in 12 hours, a stationary gear 5 with smaller diameter than the moving plate is arranged in parallel. On the moving plate surface, a time indication member 6 is supported with an axis freely rotatably shifting to the periphery at the same position. Below the moving plate of the support axis of the indication member, a small gear 8 gearing with the stationary gear 5 is mounted with a shaft. The gear ratio of the stationary gear 5 to the small gear 8 is made 11 to 1. A minute indication mark 7 is provided on the surface of the time indication member 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an analog timepiece without a hand which is completely different from a conventional analog timepiece.

[0002]

2. Description of the Related Art Conventional analog timepieces have an hour hand and a minute hand mounted on a rotary drive shaft at the center of the dial, and hour and minute scales are formed at regular intervals along the outer periphery of the upper surface of the dial. The time was displayed by the rotation angle, and this format was unchanged in the old style.

[0003]

The present invention is different from the conventional analog type timepiece in that it has no hour hand or minute hand pivotally supported by a central drive shaft as in the conventional analog timepiece, and is provided on a board to revolve. The present invention proposes a simple and highly fashionable novel analog timepiece in which the time is displayed based on the revolution angle and the rotation angle of the rotating display member.

[0004]

According to a first aspect of the present invention, there is provided a disk-shaped movable plate having a central portion fixed to a rotary drive shaft and rotating clockwise one time in 12 hours. The fixed gears are arranged in parallel, and on the board surface of the movable plate, a time display member that is smallly rotatable at the same position near the outer peripheral edge is rotatably supported, and a lower portion of the support shaft of the display member below the movable plate. Is provided with a small gear meshing with the fixed gear, a gear ratio between the fixed gear and the small gear is set to 11: 1, and there is no minute hand provided with a minute display mark on the upper surface of the time display member. It is a clock.

According to a second aspect of the present invention, a concentric annular narrow groove is formed near the outer peripheral edge of the circular fixed plate, and a fixed gear having a diameter slightly smaller than the position of the annular narrow groove is concentrically formed on the lower surface of the fixed plate. An inward gear that is fixed and rotates clockwise two times in 12 hours below the outer peripheral edge of the fixed plate is disposed concentrically with the fixed plate, and the annular narrow groove is fixed along the narrow groove. A support shaft of a time display member movable on the board surface is inserted, and a small gear composed of two kinds of gears having different numbers of teeth meshing with the fixed gear and meshing with the inward gear is inserted below the support shaft. The gear ratio of one of the small gears to the fixed gear and the gear ratio of the other small gear to the inward gear are 11: 1, respectively, and are fixed on the upper surface of the time display member. Is a handless clock provided with minute display marks. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIGS. 1 and 2 are an explanatory plan view and a cross-sectional view showing an example of the present invention. Reference numeral 1 denotes a case where a rear center portion is fixed to a drive shaft 4 which is rotated by a drive portion 3 installed at the bottom of a casing 2. The disk-shaped movable plate 5 that rotates once in a clockwise (clockwise) direction together with the drive shaft 4 in 12 hours, and the movable plate 1 that is disposed in parallel with a small space below the movable plate 1. The fixed gear 5 has a diameter slightly smaller than that of the movable plate 1, and is formed in a donut shape as shown in FIG. 2, for example, and is fixed to the body of the drive unit 3, and the movable plate 1 rotates. However, the gear 5 itself does not rotate.

Reference numeral 6 denotes a small time display member which is axially attached to the outer peripheral edge of the surface of the movable plate 1 and is rotatable at the same position on the surface of the plate, and which is freely rotatable at the same position. The surface of the member 6 has a minute display mark 7 such as a single triangle or point on the surface of the member 6 in the direction of one arrow or line or the outer periphery thereof.
Is given.

Reference numeral 8 denotes a small gear that is mounted on a portion of the time display member 6 that protrudes below the movable plate 1 of the support shaft 9. The small gear 8 meshes with the fixed gear 5, and With the rotation of the fixed gear 8, it moves around the outer periphery of the fixed gear 8 and performs a planetary gear motion of rotating itself.
Each time it rotates by 0 °, it makes one revolution, so that the time display member 6 revolves around itself while revolving. Depending on the position of the member 6 attached to the movable plate 1 that makes one clockwise rotation in 12 hours, “ The "hour" is known, and the "minute" can be displayed by the rotation angle of the minute display mark 7 of the member 6.

In this case, the gear ratio between the fixed gear 5 and the small gear (planetary gear) 8 of the time display member 6 meshing with the fixed gear 5 is set to 11: 1. This is because the time display member 6 not only rotates but also revolves. For example, when the time display member 6 is at the position of 0 (zero) (12:00) just above the drive shaft 4 of the movable plate, the minute display mark is displayed. If 7 also faces right above, 0:00 (12:00) will be displayed. Therefore, when the movable plate 1 rotates by 30 °, the member 6 moves in the circumferential direction to the 1 o'clock position. However, when the gear ratio is set to 12: 1, the small gear 8 itself rotates by 360 ° (1 rotation). However, since the position with respect to the fixed gear 5 has changed, the minute display mark 7 points in a direction perpendicular to the tangent line of the movable plate 1 in the 1 o'clock direction, that is, 1:05, and the small gear 8 is 30 °. It just turns too much. When the movable plate 1 is rotated by 60 °, the minute display mark 7 is displayed at 2:10, and when the movable plate 1 is rotated by 90 °, 3:15 is displayed.

Accordingly, in order to turn the minute display mark 7 by 0 (zero), that is, right above, every time the movable plate 1 rotates by 30 ° from 0:00, for example, the following is necessary. There is.

Small gear (minute display mark) with respect to fixed gear Rotation angle of rotation angle of movable plate゜) 5:00 150 ゜ 1650 ゜ (5 rotations -150 ゜)

That is, the gear ratio (tooth ratio) between the fixed gear 5 and the small gear 8 may be set to 11: 1.

Thus, the time display member 6 on the movable plate 1 repeats a small rotation with the rotation of the movable plate 1, and the position of the member 6 on the surface of the movable plate 1 and the minute display mark 7 on the upper surface of the member 6
The time is determined by the direction of the arrow. For example, if the time display member 6 is at the 3 o'clock position as shown in FIG. If the mark 7 has turned right next to it, it means that 7:45 is displayed.

In FIG. 1, reference numeral 10 denotes a transparent cover provided on the upper surface of the casing 2.

Also, in FIG. 1 and FIG. 2 of the present embodiment, only one time display member 6 is provided on the surface of the movable plate. If you install multiple at the corresponding position, for example, New York, London,
Time of Paris etc. can be displayed at the same time

Embodiment 2 FIGS. 3 to 5 are a plan view, a sectional view and a plan view omitting the internal mechanism showing another example of the configuration of the present invention. There is no movable plate 1 that makes one turn in 12 hours, and the small gear 8 on which the time display member 6 is coaxially fixed meshes with the inner fixed gear 5 in the same manner as described above. The small gear 8 is also revolved along the outer periphery of the fixed gear 5 to rotate by rotating the inward gear 11.

That is, the outer inward gear 11 is configured to make two clockwise rotations in 12 hours from the drive shaft 4 of the drive unit 3 via the plurality of gears 12a to 12e.
The small gear 8 is formed by combining two types of coaxial gears 8a and 8b having different diameters (having different numbers of teeth) in upper and lower stages, and the lower gear 8a having a larger diameter is connected to the outer inward gear 11 described above. The upper gear 8 b meshes with the inner fixed gear 5. In this case, the gear ratio between the fixed gear 5 and the upper gear 8b is 11: 1 as described above, and the gear ratio between the inward gear 11 and the lower gear 8a is also 11: 1. Can orbit and rotate smoothly.

Unlike the first embodiment, as described above, the inward gear 11 is rotated twice in 12 hours, that is, once in 6 hours, because the rotation of the inward gear 11 is only the revolution of the small gear 8. This also contributes to the rotation of the inward gear 11
Only rotates 60 °, the small gear 8 revolves 30 °,
That is, it is necessary to rotate the inward gear 11 at double speed (two rotations in 12 hours) in order to make the small gear 8 make one revolution in 12 hours.

Reference numeral 13 denotes a circular fixed plate mounted on the upper side of the fixed gear 5. An annular narrow groove 14 is formed concentrically near the outer periphery of the fixed plate 13, and the small gear 8 is pivoted on the lower side. The support shaft 9 of the mounted time display member 6 is inserted into the narrow groove 14,
The time display member 6 on the surface of the fixed plate 13 is the inward gear 1
With the rotation of 1, revolving and rotation are repeated along the annular narrow groove 14.

As described above, in the present embodiment, the concentric annular narrow groove 14 is opened toward the outer peripheral edge of the circular fixing plate, and the lower surface of the fixing plate 13 is slightly above the position of the annular narrow groove 14. A fixed gear 5 having a small diameter is fixed concentrically, and an inward gear 11 rotating clockwise two times in 12 hours is disposed concentrically with the fixed plate 13 below the outer peripheral edge of the fixed plate 13. A support shaft 9 of a time display member 6 which is movable on the board surface of the fixed plate 13 along the narrow groove 14 is inserted through the lower shaft 14, and a lower portion of the support shaft 9 meshes with the fixed gear 5 and faces inward. Two types of gears 8a and 8b having different numbers of teeth meshing with the gear 11
And the gear ratio of one of the small gears 8b to the fixed gear 5 and the gear ratio of the other small gear 8a to the inward gear 11 are 11 respectively. : 1 and the minute display mark 7 is provided on the upper surface of the time display member 6, so that the small gear 8 moves with the time display member 6 along the annular small groove 14 in the planetary gear movement. As in the case of the first embodiment, the hour and minute are displayed based on the position of the time display member 6 and the direction of the minute display mark 7 on the upper surface of the display member 6.

[0020]

The hand-held analog timepiece according to the present invention is constructed as described above. There is no such thing as an hour hand or a minute hand pivotally supported by a center drive shaft as in the prior art. Since there is only a time display member with a minute display mark on the upper surface, the form is extremely simple, and hours and minutes are displayed according to the revolving position and the direction of rotation of the time display member, so it is completely an idea Different time display,
It is a novel thing in design, and this is a watch, a wall clock,
By using it for a table clock or the like, a highly fashionable clock can be obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory plan view illustrating an example of an analog timepiece without a hand according to the present invention.

FIG. 2 is an explanatory sectional view showing the internal mechanism.

FIG. 3 is an explanatory plan view showing an internal mechanism of another example of the handless analog timepiece according to the present invention.

FIG. 4 is an explanatory sectional view of the same.

FIG. 5 is an explanatory plan view of the same, omitting an internal mechanism.

[Explanation of symbols]

 1-circular movable plate 2-casing 3-drive unit 4-drive shaft 5-fixed gear 6-time display member 7-minute display mark 8-small gear (planetary gear) 9-support shaft 10-transparent cover 11- Inward gear 12-Gear group 13-Circular fixing plate 14-Annular narrow groove

Claims (2)

[Claims] 1. A fixed gear having a diameter slightly smaller than that of a movable plate having a center portion fixed to a rotary drive shaft and having a diameter slightly smaller than that of the movable plate rotating clockwise once in 12 hours. On the board surface, a small-rotation time display member is pivotally supported at the same position near the outer peripheral edge, and a small gear meshing with the fixed gear is provided below the movable plate of the support shaft of the display member. A handless analog timepiece, wherein a gear ratio between the fixed gear and the small gear is 11: 1, and a minute display mark is provided on an upper surface of the time display member. 2. A concentric annular narrow groove is formed close to the outer peripheral edge of the circular fixed plate, and a fixed gear having a diameter slightly smaller than the position of the annular narrow groove is concentrically fixed on the lower surface of the fixed plate. An inward gear rotating clockwise two times in 12 hours is disposed concentrically with the fixed plate below the outer peripheral edge of the fixed groove, and the annular narrow groove is movable along the narrow groove on the surface of the fixed plate. The support shaft of the time display member is inserted, and a small gear composed of two types of gears having different numbers of teeth meshing with the fixed gear and meshing with the inward gear is fixed vertically below the support shaft, The gear ratio of one of the small gears to the fixed gear and the gear ratio of the other small gear to the inward gear are 11: 1, and a minute display mark is provided on the upper surface of the time display member. An analog watch without hands that is characterized by being made.