JPS5921478Y2 - Clock switch structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the structure of a switch used in an electronic wristwatch for changing the display of the date, day of the week, time, correction, nine, and other various purposes.

In recent years, electronic watches have seen rapid advances in electronic technology. Due to improvements, many manufacturers have released electronic watches on the market with their own nine display formats, each with their own pre-correction format.

However, no matter what electronic wristwatch you look at, the display switching method,
The adjustment method and other operations were complicated, and the watch body itself was much larger and thicker than conventional mechanical watches.

The present invention eliminates the shortcomings and shortcomings of conventional electronic wristwatches, improves the switch structure in particular, and provides an electronic wristwatch that is smaller, thinner, and has fewer parts due to its simple structure and space-saving switch structure. It is.

An embodiment of the present invention will be described below based on the drawings.

1 is an external operating member (for example, a button), and 2 is a contact lever that moves in a plane direction in conjunction with the external operating member.

The contact lever includes an elastic part 2a that provides a restoring force in the thrust direction of the external operating member, a flexible part 2b that can be bent in a direction substantially perpendicular to the thrust of the external operating member, and a switch pin 8.
The contact portion 2C9 is attached to the watch board 4 with a pin 3 fixed to the flexible portion tip 2d of the contact lever.

Reference numeral 5 denotes the rotational center axis of the contact lever fixed to the watch base plate, and 6 the elastic portion of the contact lever is a pin, which may be formed by using a bulge on the watch base plate or the like.

A contact lever pusher 7 positions the contact lever 2 in the cross-sectional direction, and at the same time engages with the shaft 3 which has deformed holes 7 a and 7 b and is fixed to the contact lever.

The contact lever pusher is positioned by a pin 9 fixed to the watch board and the aforementioned shaft 5, and is attached to the watch board by a set screw 10.

The switch pin 8 is fixed to the circuit block and connected to the circuit element (
(not shown).

Next, the operation will be explained in detail with reference to the drawings.

FIG. 1 shows a plan view of the switch structure according to the present invention in a normal carrying state.

The contact lever 2 is rotated clockwise around the rotation shaft 5 of the contact lever by the elastic portion 2a, and the contact lever 2 is rotated clockwise around the rotation shaft 5 of the contact lever.
It is positioned by coming into contact with a.

The contact portion 2C of the contact lever is positioned in the planar direction by a pin fixed to the tip of the flexible portion of the contact lever engaging with a deformed hole in the contact lever pusher for positioning the contact lever in the cross-sectional direction.

In the normal carrying state, as shown in FIG. 1, the contact lever contact portion 2C and the switch pin 8 are not in contact with each other, so that there is no electrical conduction with the circuit elements.

Next, the display switching and display correction states are shown in FIG.

By pressing the external operating member 1, the contact lever is displaced counterclockwise about the rotating shaft 5 with a resistance proportional to the elastic force of the elastic portion 2a.

The shaft 3 fixed to the tip of the flexible part of the contact lever is also displaced from the deformation groove 7a of the contact lever presser to the position 7b.

The push force of the external operating member is a combination of the drag force of the contact lever elastic part 2a and the drag force when the pin fixed to the tip of the contact lever flexible part crosses the contact lever pushing modified type slope, so the push force as a whole results in a click. It can be obtained with a feeling.

In addition, in the contact portion 2C of the contact lever, the pin fixed to the tip of the flexible portion of the contact lever rotates by an angle of increased deflection due to the deformation groove of the contact lever pusher, and comes into contact with the switch pin 8 fixed to the circuit block. .

In other words, the switch is turned on and electrically connected to the circuit element.

When the switch is turned on like this, the time adjustment 9
Signals for correcting the date and day of the week, switching the display, etc. are sent, and the correction and switching mechanisms operate.

The state shown in Figure 2 (the state in which the external operating member is pressed)
When the pull of the external operating member is released, the elastic portion 2a of the contact lever attempts to return to the state shown in FIG. 1 due to its elastic force.

The pin 3 fixed to the tip of the flexible part of the contact lever receives a force in a clockwise direction about the contact lever rotating shaft 5 in FIG. As a result, the contact portion 2C with the switch pin also rotates clockwise about the rotation shaft 5 of the contact lever in FIG. 2, returning to the old position.

As a result, the contact between the contact portion 2C and the switch pin 8 is broken, and the switch is turned off.

As explained above, in this invention, the engagement between the pin provided on the contact lever and the deformed hole provided in the contact lever pusher produces a click feeling during positioning of the contact portion of the contact lever, switch operation, and contact lever operation. let

As a result, the required elements of the switch mechanism are satisfied with fewer parts, so the switch mechanism can be configured to be smaller in plan and cross section than conventional mechanisms.

As a result, it is possible to create an electronic wristwatch that is thin and compact, which is the purpose of the present invention, and the cost can also be reduced because the number of components required is small.

Furthermore, according to the present invention, the planar positional relationship between the contact lever contact part and the switch pin is determined by the engagement between the pin fixed to the tip of the contact lever flexible part and the contact lever pressing deformation hole. The parts move to the correct position, and there is no risk of poor continuity.

Furthermore, by enlarging the tip shape 2d of the flexible portion of the contact lever as shown in the figure as an example, twisting of the contact lever can be prevented and highly reliable operation can be obtained.

Further, since the contact lever pressing deformation hole is oriented substantially concentrically with respect to the center of rotation of the contact lever, less braking is required when the contact lever returns, and reliable return can be achieved.

As described above, according to the switch structure according to the present invention, a highly reliable electronic wristwatch can be obtained, and its effects are great.

[Brief explanation of drawings]

FIG. 1 is a plan view of the switch mechanism according to the present invention in a normal carrying state. FIG. 2 is a plan view of the switch mechanism according to the present invention in a switch operation state such as display change 9 display correction, etc. FIG. 3 shows a cross-sectional view of the switch mechanism according to the present invention. 2...Contact lever, 3...Contact lever pin, 4...Clock board, 7...Contact lever pusher, 8...Switch pin.

Claims (1)

[Scope of utility model registration request] Operates on the top surface of the board according to the stroke of the external operating member,
a contact lever having an elastic part that applies a restoring force in the thrust direction of the external operating member and a flexible part that bends in a direction perpendicular to the thrust direction; and a contact lever that is placed and locked on the upper surface of the contact lever. The contact lever has a contact part integrally formed through a flexible part, and a fixing pin between the contact part and the flexible part, and the contact lever has a is provided with a deformed hole that engages with the fixed pin and has a step and a slope, so that when the fixed pin moves and overcomes the slope by the stroke of the external operating member, the contact portion comes into contact with the switch pin. Also, a switch structure for a watch, characterized in that the step is configured to provide a click function.