JPH09297185A - Timepiece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify structure, facilitate assembly, reduce the number of component items so as to reduce cost, improve appearance and obtain action display effect. SOLUTION: A second pointer 12 mounted to a second pointer shaft 9 is provided with a first object 13. A rotatory-driven body 18 is rotatably supported to the second pointer shaft 9, and this rotatory-driven body 18 is provided with a second object 19 arranged near a rotation track of the first object 13. The second pointer 12 is provided with a driving part 14 coming in contact with the rotatory-driven body 18 to press it so that the second object 19 is rotated preceding the first object 13 when the first object is brought close to the second object 19 by the rotation of the second pointer shaft 9, and the second object 19 is put in such action as to escape from the first object 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece having an action display effect.

[0002]

2. Description of the Related Art FIGS. 6A and 6B are views for explaining the structure of a conventional timepiece of this type, wherein FIG. 6A is a front view and FIG. 6B is a side sectional view. In FIG. 6, a front cover 1 made of a transparent material such as acrylic resin is attached to the front surface of the case 2, protects a movable object such as a pointer, and has a function as a supporting member. The front surface of the case 2 is a dial surface 3, and the movement 6 of the timepiece is attached to the back surface of the central portion of the case 2 by screwing a nut 5 into a cylindrical screw 4.

The hour hand shaft 7, the minute hand shaft 8 and the second hand shaft 9 for step movement of the movement 6 pass through the center hole of the case 2 and extend forward, and each of these pointer shafts has an hour hand 10 and a minute hand. 11 and the second hand 12 extend to one side from the central parts where they are attached, the first hand 12 having the shape of a cat face is provided at the tip of the second hand 12, and the other end is bent to the front side. A drive unit 14 is provided.

On the other hand, a center member 16 having a support shaft 15 extending rearward is fixed to the center of the front cover 1, and a rotary member 17 is rotated on the support shaft 15 with its axial position restricted. It is provided freely. The rotating member 17 has an arm 18 made of a thin metal rod extending in opposite directions.
a and 18b are fixed, a second object 19 having a rat face shape is provided at the tip of the arm 18a, and a counterweight 20 for balancing is provided at the tip of the arm 18b. . These constitute a driven body to be rotated.

The arms 18a and 18b are bent slightly rearward so that the second object 19 is arranged near the rotation track of the first object 13. Reference numeral 21 is a base formed in an inverted W shape for holding the case 2 of the timepiece, and 22 is a back cover.

In such a structure, the movement 6
When the second hand shaft 9 rotates stepwise every 1 second and the first object 13 rotates together with the second hand shaft 9, and the cat of the first object 13 approaches the mouse of the second object 19, the drive unit 14 hits the arm 18b first, so that the rotating body rotates, so that the rat of the second object 19 pre-rotates with respect to the cat of the first object 13 and moves as if to escape. The amount of rotation of this rotating body is determined by the timing at which the preceding drive unit 14 hits the arm 18b and the frictional force between the support shaft 15 and the rotating member 17, but by appropriately setting these conditions, the cat escapes and the mouse escapes. Works like. Thereafter, the action display effect was obtained by repeating this operation in the same manner to perform the hand movement.

[0007]

However, the timepiece constructed as described above requires the front cover 1 in order to obtain the action display effect, and the front cover 1 is provided with an opening at the center thereof, Since the central member 16 having the central axis 15 is attached to the opening, the aesthetic appearance is impaired and the structure is complicated, so that there is a problem that the assembly becomes troublesome and the cost increases. In addition, the assembly of the movable part of the timepiece is not completed only by assembling the movement 6, and the assembly of the possible part is completed only after the front cover 1 to which the arm is attached is attached to the case 2. I could not adjust the moving parts of the watch before assembling.

Therefore, the present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to provide a timepiece having a simple structure, easy assembling, and low cost and an action display effect. To do. Another object of the present invention is to provide a timepiece having a reduced number of parts, improved aesthetics, and a large action display effect.

[0009]

In order to achieve such an object, a timepiece according to the present invention is a movement which is attached to the back side of a dial and has an hour hand axis, a minute hand axis and a second hand axis penetrated forward of the dial. 6, a first object 13 provided on a second hand 12 attached to the second hand shaft 9, a driven body 18 rotatably supported on the second hand shaft, and a first driven body provided on the driven body. The second object 19 arranged near the rotation trajectory of the object and the second hand, which is provided on the second hand, rotates the second hand shaft to move the first object.
When the second object approaches the second object,
Drive unit 14 that comes into contact with and pushes a driven body to be rotated in advance of the body.

The driven body 18 is rotatably supported by the minute hand shaft 8 instead of the second hand shaft. Also,
The driven body 18 is rotatably supported by the hour hand shaft 7. The driven body 18 is rotatably supported with respect to the dial plate 3. The driven body 47 is formed in a ring shape and is rotatably supported on the dial in a centerless state. With such a configuration, there is nothing extra on the front surface, and it is possible to drive the driven body having an action action with a simple structure.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a diagram for explaining one embodiment of a timepiece according to the present invention, in which (a) is a front view,
(B) is an enlarged sectional view of a main part. The parts corresponding to those in FIG. 6 described above are designated by the same reference numerals and the description thereof is omitted. In FIG. 1, a second hand collar 32 is attached to the tip of the second hand shaft 9,
The second hand 12 is fixed to the second hand collar 32. A first object 13 is fixed to one end of the second hand 12, and a drive unit 14 is formed at the other end by bending it at a right angle to the front.
The front side of the second hand collar 32 is formed in a stepped shape, and the driven body 18 is rotatably loosely supported therein.
Reference numeral 33 is a stopper for preventing the driven body 18 from coming off.

The driven member 18 has a plate-like central portion to be supported, but the whole is formed in a rod shape similar to the second hand. The second object 19 is fixed to one end of the driven body 18 to be rotated, and the counterweight 20 is provided to the other end. The second hand 12 and the driven body 18 are supported with a slight gap in the axial direction, but when the drive unit 14 rotates in steps, the driven body 18 is rotated.
It is supposed to hit.

In such a structure, when the second hand shaft 9 rotates stepwise every second, the first object 13 also rotates integrally therewith, and when the first object 13 approaches the second object 19, it is driven. Since the portion 14 hits the driven body 18 first and blows the driven body 18 clockwise, the second object 1
9 precedes the first object 13 and moves so as to escape. Thereafter, this operation is repeated to perform the hand movement. With such a configuration, the second hand collar 32 that rotatably supports the driven body 18 at the tip of the second hand shaft 9 is provided.
With a simple structure for mounting, it is possible to drive an object with an action action even with a small torque of the second hand shaft 9.

(Embodiment 2) FIG. 2 is an enlarged sectional view of an essential part for explaining the structure of a timepiece according to another embodiment of the present invention. The same parts as those in FIG. 1 are designated by the same reference numerals. The description is omitted. In FIG. 2, a minute hand collar 35 to which a minute hand 11 is fixed is attached to the tip of the minute hand shaft 8, and a driven body 18 is rotatably supported on a step portion of the minute hand collar 35. Reference numeral 36 denotes a stopper fixed to the minute hand collar 35 so that the driven body 18 cannot be pulled out. In addition,
Reference numeral 34 denotes a second hand color, which is fixed to the second hand 12 and has a second hand shaft 9
It is attached to. As shown in FIG. 1, as compared with the case where the driven body 18 is supported by the second hand shaft 9, the driven body 18 is supported by the minute hand shaft having a torque larger than that of the second hand, so that the stability is further increased. .

(Third Embodiment) FIG. 3 is an enlarged sectional view of an essential part for explaining the structure of a timepiece according to another embodiment of the present invention. The same parts as those in FIG. 2 are designated by the same reference numerals. The description is omitted. In FIG. 3, an hour hand collar 37 to which the hour hand 10 is fixed is attached to the tip of the hour hand shaft 7, and a driven member 18 is rotatably supported on the step portion of the hour hand collar 37. Reference numeral 38 is a stopper fixed to the hour hand collar 37 so as to prevent the driven body 18 from coming off. In addition,
A minute hand collar 35a is mounted on the minute hand shaft 8 with the minute hand 11 fixed. Since the driven shaft 18 is supported by the needle shaft when the torque is further increased, the stability is further increased.

(Embodiment 4) FIG. 4 is an enlarged cross-sectional view of an essential part for explaining the structure of a timepiece according to another embodiment of the present invention, which is the same as or corresponds to the parts shown in FIGS. Are denoted by the same reference numerals and description thereof will be omitted. In FIG. 4, a step portion is formed on the nut 5, and a driven member 18 is rotatably supported on the step portion. Reference numeral 41 is a stopper fixed to the nut 5 so as to prevent the driven body 18 from coming off. In addition, 37a is an hour hand color, and the hour hand 10
Is fixed to the hour hand shaft 7. The nut 5 serves to fix the movement 6 to the dial plate 3 by screwing it into the cylindrical screw 4. Therefore, when the timepiece is assembled, the nut 5 is integrated with the dial plate 3 and is rotatably supported by the rotary driven member 18 dial plate 3, so that the stability is further increased.

(Fifth Embodiment) FIGS. 5A and 5B are views for explaining a structure of a timepiece according to another embodiment of the present invention, in which FIG. 5A is a front view and FIG. Is.
The same or corresponding parts as those in FIG. 4 are designated by the same reference numerals and the description thereof will be omitted. In FIG. 5, bobbin-shaped rotary bearings 45 are provided rotatably around a shaft 46 at four locations near the corners on the dial plate 3. A ring-shaped driven body 47 is rotatably supported by the rotary bearing 45 in a centerless state. The driven body 47 has an inner circumference 4
7a is formed in a large heart shape, and its outer circumference is supported by the rotary bearing 45. When the second hand shaft 9 rotates stepwise in the clockwise direction, the drive unit 14 at the tip of the second hand 12 hits the portion of the inner circumference 47a of the rotated drive body 47 indicated by the cross, and causes the driven body 47 to fly clockwise. In this example, four rotary bearings 45 are provided, but the number of rotary bearings 45 may be three or five or more.

In the above embodiment, the driven body is formed in the shape of two arms extending in the symmetrical direction.
It is also possible to configure a book, six books, or the like. Further, although the ring-shaped driven body has a heart-shaped inner periphery, it can be formed in various shapes such as a star and a triangle. In addition, the second hand shaft, the minute hand shaft, and the hour hand shaft each support a rotatable driven body formed of a transparent disk so that a total of three rotatable bodies are supported, and each driven body is configured with a number "7" or a triangle. Draw a line on one side, and each driven body will be rotated by an arbitrary angle by being blown off by the drive unit 14, and when the timing is correct, three “7” numbers will be lined up like a three-card line when viewed from the front. It can be seen, or each side can just form a triangle, for a very interesting visual composition. In this case, the driven body supported by the hour hand shaft closest to the back may not be transparent.

[0019]

According to the present invention, since the driven body is rotatably supported by the second hand shaft, the minute hand shaft, the hour hand shaft or the dial, a front cover is required as in the prior art, or the center shaft is attached to the front cover. It will not look bad and will look like a normal watch, and will be excellent in design. In addition, the conventional front cover and central axis are no longer required,
As the number of parts decreases, the assembly man-hour also decreases,
The cost can be reduced significantly. In addition, the movement of the timepiece can be adjusted with the movement attached to the dial, and in the example in which the driven body is supported on the second hand axis, minute hand axis, and hour hand axis, the movement can be adjusted by itself, and the accuracy of the watch is improved. Is improved. Further, since the driven body moves on the dial plate while being chased by the second hand, it is possible to obtain a visually attractive and unique action display effect watch at low cost.

[Brief description of drawings]

1A is a front view and FIG. 1B is an enlarged cross-sectional view of a main part of a first embodiment of a timepiece according to the invention.

FIG. 2 is an enlarged sectional view of an essential part of a second embodiment of the present invention.

FIG. 3 is an enlarged cross-sectional view of a main part of a third embodiment of the present invention.

FIG. 4 is an enlarged sectional view of an essential part of a fourth embodiment of the present invention.

5A is a front view of Embodiment 5 of the present invention, FIG.
(B) is an enlarged sectional view of a main part.

6A is a front view and FIG. 6B is a side sectional view of a conventional timepiece.

[Explanation of symbols]

3 ... dial, 5 ... nut, 6 ... movement, 7 ... hour hand axis, 8 ... minute hand axis, 9 ... second hand axis, 10 ... hour hand, 11 ... Minute hand, 12 ... second hand, 13 ... first object, 14 ... driving unit, 18,
47 ... Rotating driven body, 19 ... Second object, 20
... Counter weight, 32 ... Second hand color, 3
3, 36, 38 ... Stopper, 35 ... Minute hand collar, 37 ... Hour hand collar, 45 ... Rotating bearing.

Claims (5)

[Claims] 1. An hour hand shaft attached to the back side of the dial,
A movement in which the minute hand axis and the second hand axis penetrate through the front of the dial, a first object provided on the second hand attached to the second hand axis, and a driven body rotatably supported by the second hand axis. A second object provided on the driven body to be driven and arranged in the vicinity of a rotation trajectory of the first object; and a second object provided on the second hand, the first hand being rotated by the second hand shaft.
When the second object approaches the second object,
A drive unit that comes into contact with and pushes against the driven body to be rotated in advance with respect to the body of, and operates so that the second object escapes with respect to the first object. Characteristic clock. 2. The timepiece according to claim 1, wherein the driven body is rotatably supported by the minute hand shaft instead of the second hand shaft. 3. The timepiece according to claim 1, wherein the driven body is rotatably supported by the hour hand shaft instead of the second hand shaft. 4. The timepiece according to claim 1, wherein the driven body is rotatably supported with respect to the dial instead of the second hand shaft. 5. The timepiece according to claim 4, wherein the driven body is formed in a ring shape and is rotatably supported with respect to the dial in a centerless state.