JP4002692B2 - Teaching material watch - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a teaching material clock for allowing a child or the like to learn how to read a clock.
[0002]
[Prior art]
In the teaching material watch that incorporates a gear mechanism that rotates the short hand and long hand together at a rotation ratio of 1:12 by operating the dial that protrudes outside the case, a fractional number is displayed around the back of the dial, It is well known that the hour number is displayed around the back of the display gear when it is arranged, and the minute number and hour number are respectively exposed to the minute display window and the hour display window drilled in the back of the watch body. .
[0003]
In this known teaching material clock, the hour display gear rotates by 1/12 while the dial rotates once, and the hour digit moves by one digit. The short hand always moves as the long hand rotates. Therefore, for example, in the case of 1:30, the hour display window is formed long so that 1 appears at the upper part of the hour display window and 2 appears at the lower part. For this reason, the time indicated by the long hand and the short hand cannot be easily confirmed by a child or the like with the numbers in the display window.
[0004]
[Problems to be solved by the invention]
The present invention makes it easy for children to read the timepiece by rotating the long hand by dial operation so that the hour digits in the hour display window do not change while the minute digits in the minute display window are moving. It is intended to provide a watch for teaching materials that can be studied.
[0005]
[Means for Solving the Problems]
The teaching material watch according to the present invention, as shown in claim 1, is a teaching material in which a gear mechanism that interlocks and rotates a short hand and a long hand at a rotation ratio of 1:12 by operating a dial that protrudes outside the case. In the timepiece, a minute indicator disk is fixed to a long hand shaft to which the long hand is attached, and an hour indicator gear having 24 teeth is attached to one side thereof, and the minute indicator disk and the hour indicator gear are between them. Further, an intermediate gear in which chipped teeth and long teeth are alternately projected is interposed, and a flange portion where the long teeth of the intermediate gear abut on the outer periphery of the minute indicator disk and the chipped teeth pass on the upper side is provided. The flange portion is provided with a pair of feed teeth that feed the missing teeth and long teeth of the intermediate gear to one tooth, and a tooth groove that meshes the long teeth between the teeth. Minute display window for displaying fractional numbers around the back of the board, behind the hour display gear Is obtained is characterized in that the formation of the display window when displaying numbers when expressed in the periphery.
[0006]
According to a second aspect of the present invention, there is provided a watch for teaching material in which a gear mechanism for interlockingly rotating a short hand and a long hand at a rotation ratio of 1:12 by operating a dial protruding outside the case is provided. A minute indicator disk is fixed to the attached long needle shaft, and when 12 missing teeth and 12 long teeth are alternately arranged on one side, an indicator gear is axially attached to the minute indicator disk. A pair of feed teeth that the long teeth of the hour indicating gear abuts on the outer periphery and that the missing teeth pass through the upper side and the missing teeth and long teeth of the hour indicating gear are sent to one tooth on the flange. And a tooth groove for engaging the long teeth between them, and on the back of the case, a minute display window for displaying a fractional number represented around the back of the minute indicator disk, and a time displayed on the back of the hour display gear It is characterized in that a display window is formed when displaying numbers.
[0007]
Since the teaching material watch of the present invention is configured as described above, when the dial is rotated, the short hand and the long hand are rotated on the clock scale at a rotation ratio of 1:12 by the gear mechanism, and the position of this hand The time can be read.
[0008]
The minute display disk rotates together with the long hand, and the same minute number as the scale indicated by the long hand appears in the minute display window, so that the minute at the time indicated by the long hand can be confirmed by this minute number. In addition, when the minute indicator disk rotates once with the rotation of the long hand shaft, in the invention of claim 1, one intermediate gear is provided by a pair of teeth provided on the minute indicator disk and a tooth groove therebetween. A missing tooth and one long tooth are sent, and when this is engaged, only 2 teeth are displayed when meshing with the intermediate gear, and a new hour number appears in the hour display window. You can check the time.
[0009]
In the invention of claim 2, when the minute indicator disk makes one revolution with one revolution of the long hand shaft, one pair of hour indicator gears is formed by a pair of teeth provided on the minute indicator disk and a tooth gap therebetween. The missing tooth and one long tooth are sent, and a new hour number appears in the hour display window.
[0010]
After the above operation, the next missing tooth moves onto the flange portion of the minute indicator disk and the front and rear long teeth abut against the outer periphery of the flange portion, thereby preventing the minute indicator disk from rotating. Therefore, the hour number in the hour display window does not change until the minute display disk goes around.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5.
1 is a partially cutaway front view of the 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. FIG. 5 is a perspective view showing the relationship between the minute display disc and the hour display gear in FIG. 5, and FIG. 5 is an operation explanatory diagram of the minute display disc and the hour display gear.
[0012]
In the figure, reference numeral 1 denotes a plastic case, and a transparent upper lid 4 made of plastic is fitted into an opening of an opaque main body 2 with a dial 3 interposed therebetween.
[0013]
A long needle shaft 5 is rotatably attached to the center position of the main body 2, a base end of the long needle 6 is fitted to the upper end thereof, and a minute display disc 7 having the long needle shaft 5 as an axis is integrally formed at the lower end. Is formed. Reference numeral 8 denotes a reinforcing frame protruding from the upper surface of the minute display disc 7. A cylindrical short needle shaft 9 is rotatably fitted to the upper portion of the long needle shaft 5, and a proximal end of the short needle 10 is fitted to the upper end thereof.
[0014]
Further, a dial 11 is pivotally attached to one side in the main body 2, and one side portion of the dial 11 protrudes outward from a notch 12 formed in the main body 2. A 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 at a rotation ratio of 1:12.
[0015]
The gear mechanism 13 includes a first gear 14 having a small diameter provided integrally with the long needle shaft 5, a second gear 15 that meshes with the first gear 14 and is rotatably mounted on the main body 2, A second gear 15 meshed with the second gear 15 and coaxially provided on the dial 11; a fourth gear 17 with a large diameter provided integrally with the short needle shaft 9; And the fifth gear 18 provided coaxially on the second gear 15.
[0016]
Reference numeral 19 is a display gear when the minute indicator disk 7 is pivotally mounted in the main body 2, and 20 is an intermediate gear interposed between and meshed between the minute indicator disk 7 and the hour indicator gear 19. is there.
[0017]
A flange portion 21 is provided around the outer periphery of the reinforcing frame 8 provided on the minute display disc 7, and minute numbers 22 of 0 to 5 minutes are displayed at intervals around the back surface. Further, a pair of left and right feed dogs 23 is formed at one location of the flange portion 21, and a tooth groove 24 opened on the lower surface of the flange portion 21 is formed between them.
[0018]
On the outer periphery of the hour indicator gear 19, 24 teeth 25 that mesh with the tooth groove 24 of the minute indicator disk 7 are provided around, and around the back surface, the ratio is 1 to 12 at a ratio of one to two teeth. The numbers 26 are displayed at intervals. The minute number 22 and the hour number 26 are displayed so that numbers 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 which will be described later.
[0019]
The intermediate gear 20 is alternately provided with missing teeth 27 whose lower portions are cut off and long teeth 28 having no cut portions.
[0020]
Reference numerals 29 and 30 are a minute display window of the minute numeral 22 and a hour display window of the hour numeral 26 which are formed on the bottom surface of the main body 2.
[0021]
In the teaching material watch configured as described above, when the dial 11 is rotated, the gear mechanism 13 causes the short hand 10 and the long hand 6 to rotate on the dial 3 at a rotation ratio of 1:12 to read the time. it can.
[0022]
Moreover, since the minute indicator disk 7 provided on the long hand shaft 5 is also rotated once by one rotation of the long hand shaft 5, the minute at the time can be confirmed by the minute number 22 displayed in the minute display window 29.
[0023]
Further, as shown in FIG. 5A, when the minute indicator disk 7 makes one rotation along with one rotation of the long needle shaft 5, the right feed dog 23 is positioned at an intermediate position on the flange portion 21 of the minute indicator disk 7. The intermediate gear 20 is rotated by pushing the missing tooth 27 of the gear 20, and the long teeth 28 are engaged with the tooth groove 24 as shown in FIG. Further, as shown in FIG. 5C, the left feed dog 23 pushes the long tooth 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 rotates by two teeth, and a new hour number 22 appears in the hour display window 30. The time at the time can be confirmed.
[0024]
In the state shown in FIGS. 5 (a) and 5 (c), the missing teeth 27 are located on the flange portion 21, and the long teeth 28 on both sides thereof are in contact with the outside of the flange portion 21. Is prevented from slipping.
[0025]
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 disc 7 and the hour display gear 19 are formed on a single plane. The hour number 26 and the minute number 22 appearing in the hour display window 30 and the minute display window 29 can be easily confirmed by a child or the like.
[0026]
The present invention is not limited to the above embodiment. For example, the hour display gear 19 may be provided with 48 teeth 25 and displayed for 24 hours. Alternatively, the dial 11 in the main body 2 may be omitted, and a shaft may be projected from the center of the back surface of the third gear 16 so as to protrude from the back surface of the main body 2, and the dial may be fixed to the protruding end.
[0027]
In another embodiment shown in FIG. 6, the intermediate gear 20 is omitted, and the hour display gear 20 is formed by alternately forming missing teeth 31 and long teeth 32 that are the same as the intermediate gear 20. In the same manner as in the above-described embodiment, the missing tooth 20 and the long tooth 32 of the hour display gear 19 are rotated to one tooth by one rotation of the minute display disc 7, and the hour display window 30 is newly added. It is designed to show the best time.
[0028]
【The invention's effect】
The teaching material watch according to the present invention rotates with the rotation of the long hand and the short hand, the minute display disk rotates, the minute number displayed in the minute display window changes sequentially, and the hour number is stopped except when it is sent by the feed dog. Since the state is maintained and the hour number in the hour display window does not change, the time indicated by the long hand and the short hand can be read easily and accurately by the child or the like. In other words, the hour number changes from 12 to 55 from 12:55, and when the dial is reversed, the hour number changes from 1 to 12 from 1:00 to 12:05. At other times, the hour number 26 does not change at all.
[0029]
Since the hour display window and the minute display window are provided on the back surface of the watch main body, it is possible to make the child think about and determine the time indicated by the long hand and the short hand.
[0030]
When the minute display window and the hour display window are arranged side by side, the hour and minute numbers can be read very easily.
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view of a teaching material watch according to the present invention.
FIG. 2 is a rear view of the same.
FIG. 3 is an enlarged cross-sectional view taken along line AA shown in FIG.
FIG. 4 is a perspective view showing the relationship between the minute display disk and the hour display gear in the teaching material watch.
FIG. 5 is an operation explanatory diagram of the minute display disc and the hour display gear.
FIG. 6 is a perspective view showing the relationship between the minute display disc and the hour display 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 indicator disk 8 Reinforcement frame 9 Short needle shaft 10 Short needle 11 Dial 13 Gear mechanism 19 Hour indicator gear 20 Intermediate gear 21 Flange portion 22 Minute number 23 Feed teeth 24 Teeth Groove 25 Teeth 26 Hours 27 Missing teeth 28 Long teeth 29 Minutes display window 30 Hours display window

Claims (2)

In the watch for teaching materials in which a gear mechanism for interlocking rotation of the short hand and the long hand at a rotation ratio of 1:12 is operated in the case by operating the dial protruding outside the case, a minute indicator disk is attached to the long hand shaft to which the long hand is attached. An intermediate gear which is fixed and has an hour indicating gear axially attached to one side thereof, and a missing tooth and a long tooth alternately project between the indicating disc and the hour indicating gear. A long tooth in the intermediate gear abuts on the outer periphery of the minute indicator disk to form a flange portion through which the missing tooth passes above, and the flange portion has a missing tooth and a long length in the intermediate gear. A pair of feed teeth that feed teeth to one tooth, a tooth gap that meshes the long teeth between them, and a minute display window that displays a fractional number displayed around the back of the minute display disk on the back of the case; The hour display window is displayed to display the hour number displayed around the back of the hour display gear. Materials for a timepiece, characterized in that it was. In the watch for teaching materials in which a gear mechanism for interlocking rotation of the short hand and the long hand at a rotation ratio of 1:12 is operated in the case by operating the dial protruding outside the case, a minute indicator disk is attached to the long hand shaft to which the long hand is attached. The indicator gear is axially attached when 12 chipped teeth and 12 long teeth are alternately provided on one side thereof, and the long teeth of the hour indicating gear are provided on the outer periphery of the minute indicator disk. A pair of feed teeth that abuts and forms a flange portion where the missing teeth pass above, and that feeds the missing teeth and long teeth of the hour indicator gear to one tooth, and a tooth groove that meshes the long teeth therebetween On the back of the case, a minute display window for displaying the minute number represented around the back of the minute display disc and a time display window for displaying the hour number represented around the back of the hour display gear are formed. A teaching material clock characterized by that.

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