JPH01124789A - Electronic wrist watch - Google Patents

Abstract

PURPOSE:To prevent a gap from being formed between a dial and a case panel cover and a module from having a play at the time of hand correction by correcting or inputting hands by the rotation of a rotary bezel. CONSTITUTION:The rotary bezel 3 is pressed in to engage an internal gear 13 with a hand correcting wheel 14 and rotated in this state, so that the internal gear 13 rotates the hand correcting wheel 14 according to the rotation of the bezel. Further, the rotation is transmitted to a timer hand gear 24b through a switch gear 25a and a timer hand 2a mounted on a timer hand shaft 24 is moved. When the rotary bezel 3 is freed from the hand, the internal gear 13 and hand correcting wheel 14 leave each other with the repulsive force of a spring 10 and from the moment, no load is placed on the hand correcting wheel 14 from the internal gear 13 of the rotary bezel 3, so that a timer starts.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a case structure for a wristwatch in which pointer correction, switch input, etc. are performed by rotating the bezel.

[Conventional technology]

Conventionally, the case structure of a watch that adjusts the time by operating a rotating bezel is shown in Figure 4.
There was a structure as disclosed in Japanese Patent No. 179986.

In this structure, a watch glass 10 is placed on the top of a watch case 101.
2 is attached via a gasket 102a, and a rotating bezel 106 is rotatably attached to the upper periphery of the watch case 101.

A module 104 is arranged inside the watch case 101.

The rotating bezel 106 is an annular member that rotates along the upper periphery of the watch case 101, and is disposed within the annular bezel storage groove 101a formed on the upper periphery of the watch case 101. 2 on the inner wall of 101a
It is sandwiched between two waterproof rings 105 and mounted so as to be rotatable and movable up and down.

Further, an inner float wheel 106 is attached to the lower part of the one-turn bezel 103, and the rotating bezel 106 is attached to the correction gear 107.
Bezel storage groove 101a so that it can rotate by engaging with the bezel storage groove 101a.
An annular recess 101b is formed inside the watch case 101, and a portion of the internal teeth 106a of the internal gear 106 protrudes into the inside of the watch case 101 through a notch 101C communicating with the recess 1oib.

On the other hand, a correction gear 107 is provided above the module 104, and is always meshed with the intermediate gear 108, and also meshes with the internal teeth 106a of the internal gear 106 when the rotating bezel 103 mentioned above is pushed down. When the internal teeth 106a are engaged, the hour and minute hand shafts 109a and 109b are rotated via the correction gear 107 and the intermediate gear 108 to adjust the time.

[Problem that the invention seeks to solve]

However, in this conventional structure shown in FIG. 4, an annular bezel housing recessed groove 101a is formed on the upper periphery of the watch case over the entire circumference, and a module is installed inside the lower part of the bezel to mesh with the correction gear 107 in the module. - An annular internal gear 106 that protrudes inward from the outer diameter of the bezel is attached, and the bezel storage groove 101 is configured such that the internal gear 106 can also move up and down in accordance with the up and down movement of the rotating bezel 106.
The watch glass inside the rotating bezel 106 is formed by the annular bezel storage groove 101a and the annular internal gear space recess 101b. This is an unrealistic case structure in which the case part 101d to which the watch 102 is fixed and the watch case 101 part outside the rotating bezel 106 are separated, and the case part 101d on the glass fixed side floats. Even if the rotating bezel 103 is pushed back in, the rotating bezel 1
Case part 101d where 06 and watch glass 102 are fixed
move together, and the module 104 is not fixed in the vertical direction, causing the module 104 to move inside the watch case 101 5, as well as the dial 110 and endpaper part 11.
There were problems such as a gap between the two.

An object of the present invention is to overcome the above-mentioned drawbacks of the conventional structure and to provide a watch case structure that is feasible and allows easy hand adjustment and switch input in a watch in which pointers are adjusted by rotating the bezel. be.

[Means for solving problems]

The present invention provides an electronic wristwatch that has a rotating bezel and performs switch input or pointer correction using the rotating bezel, which includes a rotating bezel with internal teeth, a first recess for housing a display section such as a pointer, and a timepiece module. a watch case having a second recess for storing the rotating bezel; and a storage section for storing the rotating bezel on the outer periphery of the watch case having the first recess, the watch case comprising five gears meshing with internal teeth of the rotating bezel. A notch portion communicating between the storage portion and the second recessed portion is provided in a portion of the watch case, and at least a portion of the gear is disposed in the notch portion.

〔Example〕

Hereinafter, the present invention will be described in detail based on the drawings.

FIG. 2 is a plan view of a wristwatch according to an embodiment of the present invention in which the timer is shifted by pushing and turning the rotating bezel, and shows the normal hour hand 1a, division 1b, and second hand. In addition to 1c, a timer hand 2a and a timer scale 2b are attached. Reference numeral 6 denotes a rotating bezel that is pushed around to set the timer hand 2a when setting the timer time, and is further equipped with a crown 4a and a sound stop switch 4b for stopping the alarm when the time is up.

FIG. 1 is a sectional view of essential parts of a wristwatch case and module according to the present invention. The watch case 5 has a first recess that stores the timer hand 2a and the hour, minute, and second hands 1a, 1b, and 1c, and a second recess that stores the watch module 12. A gasket 6 is provided on the top of the first recess. A watch glass 7 is attached through the watch case 5, and a bezel storage groove 8 is formed all around the outer circumference of the watch case 5 having the first recess. After the rotating bezel 6 is press-fitted into the bezel storage groove 8, a structure is formed to prevent the rotating bezel 6 from being removed by the protrusions 5a, and a spring 10 is installed in the mouth-shaped spring installation groove 6b inside the rotating bezel 6, and the rotating bezel 6
He is always exerting a force to push up.

Further, O-rings 11 are installed in the two O-ring grooves 5b and 5c of the watch case 5 to prevent water from entering the watch case 5 from the bezel storage groove 8, and to prevent water from entering the watch case 5 from the bezel storage groove 8. A rotating bezel 6 is rotatably attached, and an annular internal tooth 16 is provided at the bottom of the rotating bezel 6 to transmit the rotation of the rotating bezel 6 to the module 12 when setting the timer time. separate body.

The bezel storage groove 8 is made in a size that fits within the width of the bezel housing groove 8, and is fitted into the bezel storage groove 8 and fixed by press-fit adhesive.

Further, in the second recess of the watch case 5, a pointer correction wheel is provided which engages with the internal teeth 16 at the bottom of the rotating bezel 6 when the rotating bezel 6 is pushed in and transmits the rotation of the rotating bezel 6 to the timer train system. 14 is installed on the module protrusion 12a.
A module protrusion 12a is housed therein, and the watch case 5 further includes a module protrusion 12a in which a pointer correction wheel 14 that communicates with a bezel storage groove 8 in which an internal tooth 16 is inserted and that engages with the internal tooth 16 is disposed. A partial case notch 15 is provided to house the case.

On the other hand, FIG. 3 is a plan view of the watch case 5 viewed from the back cover side, showing a state in which the module protrusion 12a is housed in the case notch 15 and the pointer correction wheel 14 is engaged with the internal teeth 16. It is something that

The watch case has a watch case structure in which a back cover 18 is fitted to the lower part of the watch case 5 through a gasket 17 by means of dowels 16.

Next, the moneur 12 placed inside the watch case 25 is equipped with a pulse motor drive device (not shown) and a gear for transmitting the rotation of the pulse motor to the second hand shaft 20 etc. in a second recess. , hour hand 1a, minute hand 1b, second hand 1C
In addition to moving the hands to indicate the time, the rotation from the second hand shaft 20 is transmitted to the hinoku wheel 21 by the transmission gear 20a.
Furthermore, the intermediate wheel 26 is valved, and the timer needle transmission gear 24a attached to the timer needle shaft 24 is used to control the timer needle shaft 2.
4 to slow down the timer hand 2a.

On the other hand, the timer needle shaft 24 has a timer needle transmission gear 24.
a is loosely fixed to the shaft, and a timer needle gear 24b
is fitted and fixed to the shaft, and a slip spring 24c is interposed between the two gears, so that when the load from the pointer correction wheel 14 and the switch gear 25a is greater than the load from the intermediate wheel 23, is a slip mechanism in which the timer needle transmission gear 24a idles.

Further, a pointer correction wheel 14 is provided on the module protrusion 12a, and when setting the timer time, it engages with internal teeth 16 in the lower part of the rotating bezel 6.
The pointer correction wheel 14 always meshes with a switch gear 25a pivotally supported on a switch axle 25, and the switch gear 25a also meshes with a timer needle gear 24b, and the rotating bezel 6 is pushed and rotated. Then, the timer needle gear 24b rotates so that the timer needle 2a can be set.

In addition, a switch spring 25C that rotates on the switch pattern 25b is fitted and fixed to the switch gear 25a loosely fixed to the switch axle 25 and moves together, but when the timer is not in use, the switch pattern 25b The switch spring 25C is caught on the upper stopper 25d to stop rotation. As a result, the timer needle gear 24b also stops, but the timer needle transmission gear 24a attached to the timer needle shaft 24 is allowed to rotate idly by the slip mechanism 24C.
The structure is such that it does not affect the normal movement of the hour, minute, and second hands.

Next, the timer operation of the wristwatch configured as described above will be explained. When setting the timer, push in the rotating bezel 6 so that the inner teeth 16 and the pointer correction wheel 14 engage with each other. When the rotating bezel 6 is rotated in this state, the inner teeth 16 engage the pointer correction wheel 14 in accordance with the rotation. The rotation is further transmitted to the timer needle gear 24b via the switch gear 25a, and the timer hand 2a mounted on the timer needle shaft 24 is moved. This rotation causes the switch spring 25C attached to the switch axle 25 to separate from the stopper 25d, and while looking at the timer scale 2b, the bezel 6 is pushed around to set the timer hand 2a at a desired time.

Then, when the rotating bezel 6 is released, the internal teeth 16 and the pointer adjustment wheel 14 are separated by the repulsive force of the spring 1°, and from that moment, the load from the internal teeth 16 of the rotating bezel 6 is no longer applied to the pointer adjustment wheel 14. , the timer starts.

In addition to using the above-mentioned pointer adjustment to set a timer, it can also be used to adjust the time, set an alarm time, etc.

〔Effect of the invention〕

As explained above, according to the case structure of a watch in which the hands are corrected or input by rotating the rotating bezel as in the present invention, a gap may occur between the dial and the case parting when the hands are corrected, or the module may be fixed. (By pushing and turning the bezel provided on the watch case, the correction gear is rotated using the internal teeth provided at the bottom of the bezel, and the rotation is further transmitted to correct the pointer.) This has the effect of allowing you to easily and smoothly adjust the time and set the timer without operating the crown or pusher buttons.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of main parts of a watch case and Moji Z-IV that set the timer time by rotating the bezel according to an embodiment of the present invention, and Fig. 2 is a plan view of the wristwatch showing an embodiment of the present invention. FIG. 3 is a plan view of the main parts of a watch case according to an embodiment of the present invention as seen from the back side, and FIG. 4 is a cross-sectional view of the main parts of the structure of a conventional example. 2a...Timer hand, 2b...Timer scale, 6...Rotating bezel, 5...
・Watch case, 8... Bezel storage groove, 10...
...Spring, 11...0 ring, 12.
...Module, 12a...Module protrusion, 16...Internal tooth, 14...Pointer correction wheel, 15...Notch. +01 104

Claims (1)

[Claims] In an electronic wristwatch that has a rotating bezel and uses the rotating bezel to perform switch input, pointer correction, etc., a rotating bezel with internal teeth, a first recess for accommodating a display section such as a pointer, and a watch module. a watch case having a second recess, and a gear that meshes with internal teeth of the rotating bezel, and a storage section for storing the rotating bezel on the outer periphery of the watch case corresponding to the first recess, the storage An electronic wristwatch characterized in that a notch is provided in a part of the watch case, and at least a part of the gear is disposed in the notch.