JP3129998B2 - Teaching clock - Google Patents

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 used for teaching infants and school children how to read the time indicated by the hands of the timepiece.

[0002]

2. Description of the Related Art FIG. 6 is an exploded perspective view of an essential part showing an example of this type of teaching timepiece. As shown in the drawing, the timepiece for teaching aids has a long hand 4 and a short hand 3 attached to shafts 6a and 7a having an inner / outer dual structure which are attached through the center of the dial 2.
A two-stage gear 8 composed of large and small gears 8a and 8b is attached so that the gears 6 and 7 integrally provided at the lower ends (lower in FIG. 6) of the shafts 6a and 7a respectively mesh with each other. Further, the gear portion 5a of the operation dial 5 is meshed with the gear 8a so that the two-stage gear 8 can be driven to rotate.

Here, the gear 7 of the shaft 7a to which the short hand 3 is attached is set so that the number of teeth thereof is 12 times that of the gear 6 of the shaft 6a to which the long hand 4 is attached. Accordingly, the rotation of the operation dial 5 causes the hour hand 4 to rotate 12 times faster than the hour hand 3, that is, the hour hand 4 to rotate for one hour (1/12 of the dial). Make the same movement as the hour and minute hands.

[0004] In this teaching material clock, a teaching side such as a parent or a teacher operates the operation dial 5 to move the short hand 3 and the long hand 4 to arbitrary positions on the dial 2 and to set the time pointed by the hands at this time. It is used to show and teach small children who do not know how to watch the clock, such as infants and school children.

[0005]

In the conventional teaching material clock described above, the dial must be placed so that it can be seen by a child. Each time you reset the dial, check the dial by turning it over, or forward (side with the child)
There is a problem that it is necessary to look into the dial from the screen, and it is difficult to perform the operation.

[0006] In general, in this type of teaching material clock, the child is to learn independently because only the hour hand and the short hand rotate in a predetermined relationship and there is no means other than the dial to confirm the time. However, there is no indication of (minute) on the dial, so it is difficult to know how long the minute hand is pointing, or if the short hand is between letters, it is difficult to know what time it is. There was a problem that would be lost.

[0007] It is an object of the present invention to solve the problems of the conventional teaching timepiece.

[0008]

SUMMARY OF THE INVENTION According to the present invention, a short hand and a long hand are attached to shafts having a double inner / outer structure penetrating the center of a dial, and the two shafts rotate in a predetermined relationship. In the case of a teaching material watch in which both shafts are engaged with an operation dial via gears, the time indicated by each hand is shown at a predetermined position on the back side of the watch body in conjunction with the movement of the short hand and the long hand. A display unit for displaying minutes is provided, and the display unit is characterized in that numerals attached to gears and operation dials appear in openings provided in the watch main body. .

[0009]

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on illustrated embodiments. In the drawings, the same reference numerals are given to the same functional components as those shown in the conventional example.

FIG. 1 is a front view of a teaching timepiece according to the present invention. As shown in the drawing, this teaching material clock has, like a normal clock, a dial 2 on the front of a clock main body 1 that displays time with numerals from 1 to 12, and a predetermined relationship on the dial 2. And a short hand 3 and a long hand 4 which rotate with the rotation. An operation dial 5 for driving the short hand 3 and the long hand 4 is provided as a teaching timepiece.

As shown in FIG. 3, the short hand 3 and the long hand 4 have a double-structured outer shaft 7a penetrating the center of the dial 2.
And the inner shaft 6a. Double shaft 7
Gears 7 and 6 are integrally provided at the lower ends of both a and 6a. Here, the gear 7 integral with the outer shaft 7a to which the short hand 3 is attached is larger than the gear 6 integral with the inner shaft 6a to which the long hand 4 is attached.
Have a relationship that the ratio of the number of teeth is 12: 1.

The two gears 7 and 6 mesh with a two-stage gear 8 composed of two large and small gears 8a and 8b on the back surface of the dial 2. The two-stage gear 8 is a large gear 8
a meshes with a gear 5 a provided inside the operation dial 5. Here, it is assumed that the number of teeth of the gear portion 5 a provided inside the operation dial 5 is equal to the number of teeth of the gear 6. That is, when the operation dial 5 is rotated one turn, the gear 6 meshed with the gear 8a rotates once through the gear 8a of the two-stage gear 8 meshed with the gear portion 5a. This means that one rotation of the operation dial 5 corresponds to one rotation of the long hand 4, and both rotate at the same angular velocity.

Here, in the teaching material watch of the present invention,
As shown in FIG. 4, numerals 7 indicating 1 to 12 (hours) are provided on the back surface of the gear 7 integrated with the shaft 7 a to which the short hand 3 is attached.
c are arranged in a circle. On the back surface of the operation dial 5, as shown in FIG.
(Here, twelve numbers in 5-minute increments such as 0, 5, 10,... 55) are similarly arranged in a circle.

As shown in FIG. 2, the numerals 7c and 5b are provided at predetermined positions of the back cover 9 covering the back of the timepiece body 1.
Are provided with openings 9a and 9b, respectively, which can be visually recognized. The openings 9a and 9b and the numerals 7c and 5b appearing inside the openings 9a and 9b constitute display units 10 and 11 for (hour) and (minute). In addition, the back cover 9 is provided with markers 9e and 9f indicating the corresponding numerals 7c and 5b, and the display units 10 and 1 are provided.
Descriptions 9c and 9d explaining how to read the numbers 7c and 5b appearing in 1 are attached.

In FIG. 6, reference numeral 7b denotes an insertion hole for inserting the shaft 6a provided at the center of the shaft 7a to which the short hand 3 is attached. When the teaching dial of the present invention having the above configuration is turned, the operating dial 5 is rotated.
The large and small gears 7, 6 are simultaneously driven to rotate via the two-step gear 8 engaged with the shafts 7a, 6 of the respective gears 7, 6.
The short hand 3 and the long hand 4 attached to a rotate. At this time, the gear 7 of the shaft 7a to which the short hand 3 is attached and the long hand 4
The gear 6 of the shaft 6a on which the gears are attached has a gear ratio of 1
Since the setting is made to be 2: 1, a clock movement in which the short hand 3 moves 1/12 turn, ie, one hour, while the long hand 4 moves one turn, ie, 60 minutes, appears. .

Therefore, the short hand 3 and the long hand 4 are operated with the operation dial 5.
Is moved to an arbitrary position on the dial 2 and the state at that time is
It shows small children such as infants and children who do not know how to read the clock, and teaches how to read the time indicated by the hands.

At this time, in the timepiece for teaching materials of the present invention, the short hand 3
Is displayed at the position of the marker 9e on the display unit 10 provided on the back side of the timepiece, and the numeral 7c on the dial 2 pointed by the hour hand 4 is displayed. Is displayed at the position of the marker 9f on the display unit 11. Therefore, even when a teacher or a parent operates the operation dial 5 from the back of the watch, the time pointed by the short hand 3 and the long hand 4 can be known, and it is easy to determine whether or not the child's response to the dial 2 is correct. Can be confirmed. Conversely, the display units 10 and 11
, The short hand 3 and the long hand 4 are set at desired times, and the dial 2 in this state is shown to the child.
The time pointed by the short hand 3 and the long hand 3 can be answered.

Therefore, the burden on the teaching side is reduced, the time can be set quickly, and learning can be performed efficiently. In the timepiece for teaching materials of the present invention, the time indicated by the short hand 3 and the long hand 4 is indicated by the numerals 7c and 5 on the display units 10 and 11.
Since it is displayed in b, it is easy to understand, and particularly it is easy to grasp (minutes) not displayed on the dial 2.

Further, in the teaching timepiece of the present invention, the short hand 3
And reading the time pointed by the long hand 4 and the display unit 10,
Two-way learning is possible in which the positions of the short hand 3 and the long hand 4 corresponding to the time set at 11 are considered.

Therefore, it is possible for children to learn independently or to learn together. At that time, FIG.
As shown in FIG.
If c and 9d are added, the understanding is facilitated, and the effect is further enhanced.

As described above, the teaching timepiece of the present invention
used. In the illustrated embodiment, the display units 10 and 11 for displaying the time indicated by the short hand 3 and the long hand 4 with numerals 7c and 5b are provided on the back side of the watch.
0 and 11 may be provided on the front side of the watch body 1 which is the same as the dial 2. In this way, the analog and digital displays can be compared at a glance, and the child can easily understand when learning independently. become.

In the illustrated embodiment, an example is shown in which a numeral 7c for displaying (hour) is attached to the back of the gear 7 and a numeral 5b for displaying (minute) is attached to the back of the operation dial 5. However, in the teaching material clock of the present invention, the time indicated by each hand only needs to be displayed on the display units 10 and 11 as numerals 7c and 5b, and numerals 7c and 5b indicating (hour) and (minute) are provided. A separate member may be provided, and this member may be engaged with the operation dial 5 using a gear, a link mechanism, a timing belt, or the like so as to interlock with the movement of the short hand 3 and the long hand 4.

[0024]

As described above, according to the present invention, the timepiece indicated by each of the hands is indicated by a numeral indicating the time indicated by each of the hands in a timepiece for an educational material in which the short hand and the long hand can be adjusted to desired positions with the operation dial. Providing the minute display on the back side of the watch body makes it easy to grasp the time indicated by the hands, reduces the burden on the teaching side such as parents and teachers, and enables efficient learning In addition, it becomes easier for children to understand, and it is also possible for children to learn each other or independently. In addition, since the display unit is formed using the driving gear of the hands and the operation dial, the display unit can be provided using the conventional teaching material clock as it is, and it is easy to respond and the cost is reduced. Rise can be minimized.

[0025]

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a teaching timepiece according to the present invention.

FIG. 2 is a rear view of the teaching material watch shown in FIG. 1;

FIG. 3 is a sectional view of a main part of the timepiece for teaching aid shown in FIG. 1;

FIG. 4 is a rear view of a gear constituting the display unit according to the present invention.

FIG. 5 is a rear view of the operation dial constituting the display unit according to the present invention.

FIG. 6 is an exploded perspective view of a main part of the teaching material watch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Watch main body 2 Dial 3 hour hand 4 hour hand 5 operation dial 5a gear part 5b Number indicating minute (6) 6,7,8a, 8b Gear 6a, 7a shaft 7b Inserting hole 7c Number indicating hour (8) Two-stage gear 9 Back cover 9a, 9b Opening 9c, 9d Description 9e, 9f Marker 10, 11 Display

Claims (1)

(57) [Claims] 1. A short hand and a long hand are respectively attached to a shaft having a double inner and outer structure penetrating the center of the dial, and both shafts are connected via gears so that the two shafts rotate in a predetermined relationship. In the teaching material watch engaged with the operation dial, at a predetermined position on the back side of the watch main body, there is a display unit that displays the time indicated by each hand in numerical hours and minutes in conjunction with the movement of the short hand and the long hand. provided, the display unit, gears and operation attached on the dial numbers, materials for a timepiece, characterized in a kite adapted appear in the opening provided in the watch body.