JP2000227752A - Timepiece for teaching material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a child, etc., to easily study how to read a timepiece by forming the timepiece in such a manner that the hour hand is rotated by dial manipulation and that the hour figure of an hour display window does not change while the minute figure of a minute display window changes. SOLUTION: An hour display gear 19 is pivotally fitted to one side of a minute display disk 9 fixed to an hour hand stem 5 of the timepiece for a teaching material constituted by building a gear mechanism 13 for cooperatively rotating the minute hand 6 and the hour hand 10 at a rotating ratio of 12:1 into a case 1 by the manipulation of the dial 11 producing to the outside of the case 1. When the minute display disk 7 makes one turn, the hour display gear 19 is sent by two teeth by a pair of gears 23 disposed at the minute display disk 7 and tooth grooves 24 therebetween so that the fresh hour figure is displayed in the hour display window 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece for teaching materials for allowing a child or the like to learn how to read a timepiece.

[0002]

2. Description of the Related Art In a teaching timepiece incorporating a gear mechanism for interlocking rotation of a short hand and a long hand at a rotation ratio of 1:12 by operating a dial protruding out of a case, minute numerals are displayed around the back surface of the dial. The hour digits are displayed around the back of the hour display gear arranged on the hour hand shaft, and the minute and hour digits are respectively faced to the minute and hour display windows drilled on the back of the watch body. Those are known.

[0003] In this known teaching material watch, while the dial makes one rotation, the hour display gear makes 1/12 rotation and the hour numeral becomes one.
Since the hour hand moves only by the number, and the hour hand keeps moving at the same time as the rotation of the long hand, for example, at 1:30, the hour and hour numbers appear as 1 at the top of the hour display window and 2 at the bottom. The hour display window is formed longer. for that reason,
The time indicated by the long hand and the short hand could not be easily confirmed by a child or the like by the numbers in the display window.

[0004]

According to the present invention, the hour hand is rotated by a dial operation so that the hour numeral of the hour display window is not changed while the minute numeral of the minute display window is moving. It is an object of the present invention to provide a clock for teaching materials in which a child or the like can easily study how to read the clock.

[0005]

The teaching timepiece of the present invention comprises:
According to a first aspect of the present invention, there is provided a teaching timepiece in which a gear mechanism for interlocking rotation of a short hand and a long hand at a rotation ratio of 1:12 by operating a dial protruding outside the case is incorporated in the case, the long hand is attached. A minute indicating disk is fixed to the long hand shaft, and an hour indicating gear having 24 teeth is axially mounted on one side thereof. Between the minute indicating disk and the hour indicating gear, a missing tooth and a long tooth are provided. Intermediate gears protruding alternately are interposed, and the long teeth of the intermediate gear abut on the outer periphery of the minute indicating disc,
While the missing tooth forms a flange part that passes on the upper side,
The flange portion has a pair of feed teeth for sending the missing tooth and long tooth of the intermediate gear to one tooth, and a tooth groove for meshing the long tooth therebetween is provided,
On the back of the case, a minute display window for displaying minute numbers around the back of the minute display disk and an hour display window for displaying hour and numbers near the back of the hour display gear are formed. It is what it was.

According to a second aspect of the present invention, the operation of the dial protruding outside the case causes the short hand and the long hand to be set at 1:12.
In a teaching material timepiece incorporating a gear mechanism for interlocking rotation at a rotation ratio in a case, a minute indicating disk is fixed to a long hand shaft to which the long hand is attached, and on one side thereof, 12 missing teeth and 12 pieces of teeth are provided. When long teeth are alternately provided, the display gear is attached to the shaft,
The long teeth of the hour display gear abut on the outer periphery of the minute display disk,
While the missing tooth forms a flange part that passes on the upper side,
The flange portion is provided with a pair of feed teeth for sending the missing tooth and the long tooth of the hour indicating gear to one tooth and a tooth groove for meshing the long tooth therebetween.
On the back of the case, a minute display window for displaying minute numbers around the back of the minute display disk and an hour display window for displaying hour and numbers near the back of the hour display gear are formed. It is what it was.

[0007] Since the teaching timepiece of the present invention has the above-described structure, when the dial is rotated, the gear mechanism causes the dial to rotate.
The short hand and the long hand rotate on the clock scale at a rotation ratio of 1:12, and the time can be read from the position of the hand.

The minute display disk rotates together with the hour hand and the minute number shown on the minute display window is displayed on the minute display window, so that the minute at the time indicated by the long hand can be confirmed by the minute number. In addition, when the minute indicating disk makes one rotation with one rotation of the long hand shaft, according to the invention of claim 1, one pair of teeth provided on the minute indicating disk and the tooth groove therebetween provide one of the intermediate gears. The missing tooth and one long tooth are sent. With this, only two teeth are displayed when the intermediate gear meshes with the intermediate gear, and a new hour number appears in the hour display window. You can check the time of day.

According to the second aspect of the present invention, when the minute indicating disk makes one rotation with one rotation of the long hand shaft, the hour indicating gear is formed by the pair of teeth provided on the minute indicating disk and the tooth grooves therebetween. One missing tooth and one long tooth are sent, and a new hour number appears in the hour display window.

After the above operation, the next missing tooth moves onto the flange portion of the minute indicating disk, and the long teeth before and after the missing tooth contact the outer periphery of the flange portion, so that the minute indicating disk is prevented from rotating. .
Therefore, the hour number in the hour display window does not change until the minute display disk makes one round.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 1 is a partially cutaway front view of a teaching material watch, FIG. 2 is a rear view thereof, FIG. 3 is an enlarged sectional view taken along line AA shown in FIG. 1, and FIG. 5 is a perspective view showing the relationship between the minute display disk and the hour display gear in FIG. 5, and FIG. 5 is an explanatory diagram of the operation of the minute display disk and the hour display gear.

In the figure, reference numeral 1 denotes a plastic case, and a transparent upper cover 4 made of plastic is fitted into an opening of an opaque main body 2 with a dial 3 interposed therebetween.

A long needle shaft 5 is rotatably mounted at a center position of the main body 2, a base end of a long needle 6 is fitted at an upper end thereof, and a minute indicating disk 7 having the long needle shaft 5 as an axis at a lower end thereof. Are integrally formed. Reference numeral 8 denotes a reinforcing frame protruding from the upper surface of the minute display disk 7. Above the long needle shaft 5, a cylindrical short needle shaft 9 is provided.
Are rotatably fitted, and the base end of the short hand 10 is fitted to the upper end thereof.

Further, a dial 11 is provided on one side of the main body 2.
And one side thereof is projected outward from a notch 12 formed in the main body 2. The gear mechanism 13 is incorporated so that the operation of the dial 11 causes the short hand 10 and the long hand 6 to rotate in conjunction with each other at a rotation ratio of 1:12.

The gear mechanism 13 includes a first gear 14 having a small diameter provided integrally with the long needle shaft 5, and a second gear 15 meshing with the first gear 14 and rotatably mounted on the main body 2. ,
A third gear 16 meshed with the second gear 15 and coaxially provided on the dial 11, a large-diameter fourth gear 17 provided integrally with the short needle shaft 9, and a fourth gear 17. A fifth gear meshed with and coaxially provided on the second gear 15
The gear 18 is used.

Reference numeral 19 denotes a display gear when the minute display disk 7 is axially mounted in the main body 2, and reference numeral 20 denotes a minute display disk 7.
And an intermediate gear interposed between and meshed with the hour display gear 19.

A flange 21 is provided around the outer periphery of the reinforcing frame 8 provided on the minute display disk 7, and minute numerals 22 at intervals of 0 to 5 minutes are displayed around the back surface. . Further, a pair of left and right feed dogs 23 are formed at one position of the flange portion 21, and between them, a tooth groove 24 opening on the lower surface of the flange portion 21 is engraved.

On the outer circumference of the hour display gear 19, 24 teeth 25 meshing with the tooth grooves 24 of the minute display disk 7 are provided. The numeral 26 is displayed at intervals up to. The minute numeral 22 and the hour numeral 26 are displayed so that numerals corresponding to the times indicated by the long hand 6 and the short hand 10 appear in an hour display window and a minute display window described later.

Further, the intermediate gear 20 is provided with a plurality of cut-out teeth 27 whose lower portions have been cut off and long teeth 28 having no cut-out portions.

Reference numerals 29 and 30 denote a minute display window for the minute numeral 22 and an hour display window for the hour numeral 26 pierced on the bottom surface of the main body 2.

In the teaching material timepiece constructed as described above, when the dial 11 is rotated, the short hand 10 and the long hand 6 are rotated by the gear mechanism 13 at a rotation ratio of 1:12.
You can rotate the top and read the time.

In addition, the minute display disk 7 provided on the long hand shaft 5 makes one rotation by one rotation of the long hand shaft 5, so that the minute at that time can be confirmed by the minute number 22 shown in the minute display window 29. Can be.

Further, as shown in FIG.
When the minute display disk 7 makes one rotation with the rotation, the right feed dog 23 pushes the missing tooth 27 of the intermediate gear 20 located on the flange portion 21 of the minute display disk 7 to rotate the intermediate gear 20. As shown in FIG. 5B, the long teeth 28 mesh with the tooth spaces 24. Further, as shown in FIG.
3 pushes the long teeth 28 to rotate the intermediate gear 20. When one tooth of the missing tooth 27 and one tooth of the long tooth 28 of the intermediate gear 20 are sent in this way, the hour display gear also rotates by two teeth, and a new hour numeral 22 appears in the hour display window 30. You can check the time in the time.

In the state shown in FIGS. 5A and 5C, the missing tooth 27 is located on the flange portion 21 and the long teeth 28 on both sides thereof are provided.
Abuts against the outside of the flange portion 21, so that the intermediate gear 20
And the idling of the hour display gear 19 is prevented.

In the present invention, the minute display window 29 and the hour display window 30 are arranged in a straight line and close to each other, and the back surfaces of the minute display disk 7 and the hour display gear 19 are on one plane. Thus, the hour numeral 26 and the minute numeral 22 appearing in the hour display window 30 and the minute display window 29 can be easily confirmed by a child or the like.

The present invention is not limited to the above embodiment. For example, the hour display gear 19 has 48 teeth 2
5 and may be displayed for 24 hours. Also body 2
The inner dial 11 may be omitted, a shaft may be protruded from the center of the back surface of the third gear 16, the shaft may protrude from the back surface of the main body 2, and the dial may be fixed to the protruding end.

In another embodiment shown in FIG. 6, the intermediate gear 20 is omitted, and the hour display gear 20 is formed by alternately forming the same missing teeth 31 and long teeth 32 as those of the intermediate gear 20, and this is displayed as a minute display circle. Board 7
The rotation of the minute indicating disk 7 causes the missing tooth 2 of the hour indicating gear 19 to rotate in the same manner as in the previous embodiment.
0 and the long tooth 32 are rotated by one tooth so that a new time appears in the hour display window 30.

[0028]

In the timepiece for teaching materials according to the present invention, the minute display disk rotates with the rotation of the hour hand and the short hand, the minute number shown in the minute display window changes sequentially, and the hour number is sent by the feed dog. The time is displayed by the long hand and the short hand.
It can be read easily and accurately. That is, 12
The hour digit changes from 12 to 1 from 55: 00 to 1:00, and when the dial is reversed, it changes from 1:00 to 1
The hour numeral changes from 1 to 12 during 2:05, but the hour numeral 26 does not change at all other times.

Since the hour display window and the minute display window are provided on the back of the timepiece main body, it is possible for a child or the like to make himself / herself think and determine the time indicated by the long hand and the short hand.

When the minute display window and the hour display window are arranged side by side, the hour and minute numerals can be read very easily.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a timepiece for teaching material according to the present invention.

FIG. 2 is a rear view of the same.

FIG. 3 is an enlarged sectional view taken along line AA shown in FIG.

FIG. 4 is a perspective view showing a relationship between a minute indicating disk and an hour indicating gear in the teaching material timepiece.

FIG. 5 is an operation explanatory diagram of the minute display disk and the hour display gear.

FIG. 6 is a perspective view showing a relationship between a minute indicating disk and a time indicating gear in another embodiment of the teaching material watch.

[Explanation of symbols]

 1 Case 2 Body 5 Long Needle Shaft 6 Long Needle 7 Minute Display Disk 8 Reinforcement Frame 9 Short Needle Shaft 10 Short Hand 11 Dial 13 Gear Mechanism 19 Hour Display Gear 20 Intermediate Gear 21 Flange Part 22 Minute Number 23 Feed Dog 24 Tooth Groove 25 Teeth 26 o'clock numbers 27 missing teeth 28 long teeth 29 minutes display window 30 o'clock display window

Claims (2)

[Claims] 1. A teaching-material timepiece in which a gear mechanism for interlocking rotation of a short hand and a long hand at a rotation ratio of 1:12 by operating a dial protruding outside the case is incorporated in the case.
A minute indicating disk is fixed to a long hand shaft to which the long hand is attached, and an hour indicating gear having 24 teeth is axially mounted on one side thereof. A chip is provided between the minute indicating disk and the hour indicating gear. An intermediate gear in which teeth and long teeth are alternately protruded is interposed, and a long tooth of the intermediate gear abuts on the outer periphery of the minute indicating disc to form a flange portion where the missing teeth pass above. A pair of feed teeth for sending one missing tooth and a long tooth of the intermediate gear to the flange portion, and a tooth groove for meshing the long tooth therebetween, and a back surface of the minute display disc on the back of the case. A timepiece for teaching materials, comprising: a minute display window for displaying minute numerals in the periphery and an hour display window for displaying hour numerals in the vicinity of the back of the hour display gear. 2. A teaching timepiece in which a gear mechanism for interlocking rotation of a short hand and a long hand at a rotation ratio of 1:12 by operating a dial protruding out of the case is incorporated in the case.
A minute indicating disk is fixed to the long hand shaft to which the long hand is attached, and on one side of the minute indicating disk, when 12 missing teeth and 12 long teeth are alternately provided, a display gear is axially mounted on the minute indicating disk. The long teeth of the hour display gear are in contact with the outer periphery of the disc, and a flange portion is formed through which the missing tooth passes above, and a pair of the missing tooth and the long tooth of the hour display gear are sent to the flange portion. A feed dog and a tooth groove for meshing the long teeth between them are provided, and on the back of the case, a minute display window for displaying the minute number displayed around the back of the minute display disk, and around the back of the hour display gear. A timepiece for teaching materials, characterized in that a time display window for displaying numbers when displayed is formed.