JPS5838504Y2 - Densidokeiniokeru Suitsutikikou - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a switch mechanism in an electronic timepiece that can selectively perform switching operations by changing the direction of rotation of a winding stem.

Electronic watches with a built-in logic circuit are equipped with a switch mechanism that is operated to perform, for example, adjustment of the oscillation frequency of the crystal oscillation circuit, reset of the count circuit, drive control of the time display, etc. There is.

The plurality of switches used for this purpose in such conventional electronic watches often have a push button structure, and many switches are separately provided on the side of the watch in addition to the crown.

Therefore, when performing the various adjustments and controls described above, the crown operation and the switch operation must be performed, making the operations cumbersome and causing erroneous operations.

Therefore, the present invention proposes a switch mechanism for an electronic watch that can perform multiple switch operations on the watch by changing the direction of rotation of the winding stem, thereby reducing the number of switches provided on the watch. The details will be explained below with reference to the illustrated embodiments.

FIG. 1 is a cross-sectional view showing a switch mechanism in an electronic timepiece according to the present invention. Reference numeral 1 denotes a winding stem equipped with a crown 2, on which a cam 3 is provided.

Further, the winding stem 1 is provided with a screw wheel 5 which moves via a mandrel 4 and a lever (not shown) when the crown 2 is pulled out and rotates together with the winding stem 1 when the crown 2 is rotated. There is.

A movable contact 7 made of an elastic material is fixed by a screw 8 to a base plate 6 to which the winding stem 1 is attached.

The movable contact 7 has a substantially T-shape, and the central portion is bent to be higher than the base plate 6 to avoid contact with the Tsuzumi wheel 5.
Further, one end near the crown 2 is bent upward, and a hole 10 made in a circuit block 9 arranged at intervals on the main plate 6 is protruded toward the center.

A first fixed contact 11 (second illustration) and a second fixed contact 12 (second illustration) are provided in the hole 10 of the circuit block 9.

FIG. 2 is a plan view showing the above-mentioned switch mechanism.

Next, the operation of the switch mechanism in the electronic timepiece according to the present invention will be explained with reference to FIG.

In addition, the same reference numerals are attached to the same members in FIG. 1, FIG. 2, FIG. 3, and FIG. 4, respectively.

FIG. 3 shows a sectional view taken along the line ■II-■II in FIG. 1, and the solid line 7a indicates the neutral position of the movable contact 7 when the crown 2 is not operated. .

Now, when the crown 2 is rotated in the direction of the arrow 13, the cam 3, which is provided integrally with the winding stem 1, rotates to the position shown by the dashed line, and the movable contact 7 formed of an elastic material is fixed with the screw 8. The cam 3 moves in a first direction 7b indicated by a dashed line using one end as a fulcrum.

Therefore, the movable contact 7 is connected to the hole 1 formed in the circuit block 9.
contact with the first fixed contact 11 provided at 0.

When the movable contact 7 that has moved in the first direction 7b is released from the crown 2, it returns to the neutral position 7a due to return elasticity since it is made of an elastic material.

Next, when the crown 2 is rotated in the direction of the arrow 14, the cam 3 moves to the position shown by the two-dot chain line, and in response, the movable contact 7 moves in the second direction 7C shown by the two-dot chain line. .

Therefore, the movable contact 7 is connected to the hole 1 formed in the circuit block 9.
contact with the second fixed contact 12 provided at 0.

When the user releases the crown 2, the movable contact 7 that has moved in the second direction 7C returns to the neutral position 7a.

In this way, the switch is opened and closed by changing the direction of rotation of the winding stem.

FIG. 4 is a circuit diagram showing the relationship between the above-described switch mechanism and the circuit block. For example, the movable contact 7 is connected to the first fixed contact 1.
1, a corresponding output is obtained from the first output terminal 16 of the circuit block 9, and when the movable contact 7 is brought into contact with the second fixed contact 12, the circuit A corresponding output is obtained from the second output terminal 17 of the block 9.

The output from the first output terminal 16 or the second output terminal 17 is used as appropriate for time correction, speed adjustment, resetting of the counter circuit, etc.

Note that reference numeral 15 is a battery as a power source for operating the circuit block 9 and the like.

As described above, the switch mechanism in the electronic timepiece according to the present invention brings the movable contact 7 into contact with the first fixed contact 11 or the second fixed contact 12 via the cam 3 by changing the operating direction of the winding stem, and operates the switch. and
This allows multiple switch operations on the watch to be performed with simple operations.

Although the details of the switch mechanism in the electronic timepiece according to the present invention have been described based on the illustrated embodiments, the present invention is not limited to the illustrated embodiments, and various changes and improvements can be made.

The switch mechanism in the electronic timepiece according to the present invention, as shown in the diagonal top, changes the direction of rotation of the winding stem, thereby moving a movable contact made of an elastic material from a neutral position to a first direction via a cam provided on the winding stem. , has a structure in which a switch operation can be performed by selectively moving in a second direction and bringing a part of the movable contact into contact with a first fixed contact and a second fixed contact provided in the hole of the circuit block. Because of this, it is possible to reduce the number of push-button switches that were previously required, and it is also possible to pull out the crown and operate the switch at the same time, making it easy to operate, and the structure is simple, making it practical. The above effects are significant.

[Brief explanation of the drawing]

FIG. 1 is a partially longitudinal side view showing an embodiment of the switch mechanism in an electronic timepiece according to the present invention, FIG. 2 is a plan view of the switch mechanism shown in FIG. 1, and FIG. II-
FIG. 4, a sectional view taken along line III, is a circuit diagram showing the relationship between a switch mechanism and a circuit block in an electronic timepiece according to the present invention. ... Winding stem, 2 ... Crown, 3 ...
...Cam, 6... Ground plate 7... Movable contact formed of elastic material, 8... Screw 9...
...Circuit block, 10...Hole, 11...
...first fixed contact, 12...second fixed contact,
7a... Neutral position, 7b... First direction, 7C... Second direction, 15... Battery,
16...First output terminal, 17...Second output terminal
Output terminal.

Claims (1)

[Scope of utility model registration request] In an electronic watch having a winding stem with a crown and a circuit block in which an electronic circuit is formed, the cam is mounted on the winding stem and the cam is moved from a predetermined neutral position in response to rotational operation of the winding stem. a movable contact made of an elastic material that is moved in a predetermined first direction through the winding stem and moved in a second direction opposite to the first direction in response to changing the direction of rotational operation of the winding stem; a hole formed in the block into which a part of the movable contact is inserted; a first fixed contact provided in the hole and contacted as the movable contact moves in the first direction; a second fixed contact that contacts as the movable contact moves in the second direction; the movable contact does not contact the first and second fixed contacts when the winding stem is not operated; A switch mechanism in an electronic watch characterized by being located in a neutral position.