JPS6348366B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a click mechanism used in a watch stem or the like.

[Prior Art] Conventionally, for example, the two directions of the rotational direction and the axial direction of the crown of a portable digital watch have been clicked using separate members.

[Problems to be Solved] This configuration in which clicks in two directions are performed using separate members has a complicated configuration and a large number of parts, making it difficult to manufacture and assemble.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a click mechanism that is simple in construction and can perform clicks in the axial and rotational directions of a shaft with a small number of parts.

[Means for Solving the Problems] A first feature of the present invention is that a shaft is rotatably supported on a frame body so as to be movable in the axial direction and rotatable relative to the shaft. A click wheel that is irremovably supported, a click portion provided on the shaft, a spring portion that engages the click wheel and clicks the click wheel in the rotational direction of the shaft, and a spring portion that engages with the click portion. A spring portion for clicking the click portion in the axial direction of the shaft is provided, and a click spring plate is integrally formed and installed in a direction intersecting the shaft.

A second feature of the present invention is that, in addition to the first feature, a stopper portion for preventing detachment is provided on the shaft and can come into contact with the click spring plate.

A third feature of the present invention is that, in addition to the first feature, a stopper portion for preventing over-pushing is provided on the shaft and can come into contact with the click spring plate.

[Example] An example of the present invention will be described below with reference to the drawings.

In FIG. 1, a time display window 1a is provided on the front side of an exterior case 1 that serves as the frame of a portable digital watch, and a rear end 3 fixed to the end of a rear end 2 is mounted on a side plate 1b. More operationally exposed.

As shown in FIGS. 2 to 4, the reuse stem 2 is pivotally supported in an inner case 4 disposed within the outer case 1 so as to be rotatable and movable back and forth. A collar-shaped stopper part 2a for preventing detachment is provided approximately in the center of the reuse stem 2, and a click part 2b and a stopper part 2c for preventing over-pushing are provided at a certain distance to the right of the stopper part 2a.
are formed respectively. The stopper parts 2a and 2c have the same diameter, but the click part 2b has a smaller diameter than both stopper parts. Stopper part 2
The right end of c is joined to the base of the reuse 3 within the hole of the side plate 1b.

Further, a click wheel 5 is loosely fitted into the reuse stem 2 on the left side of the stopper portion 2a in a non-rotatable manner. The click wheel 5 also serves as a switch operating cam,
As shown in FIGS. 5 and 6, the outer periphery includes projections 5a,
... and 5b, ... are provided. left protrusion 5
a,... are the protrusions 5 on the right side as shown in Figures 7 and 8.
b, . . . with a phase difference of a constant angle θ. And the click wheel 5 has the 3rd, 5th, and 6th ones.
As shown in the figure, the operating contact pieces 6 and 7 are in elastic contact.

The actuating contacts 6, 7 are provided with engaging portions 6a, 7a as shown in the fifth and sixth figures, and one of the engaging portions 6a
can come into contact with the projection 5a of the click wheel (operating cam) 5, and the other engaging portion 7a can come into contact with the projection 5b.
Therefore, the actuating contacts 6 and 7 can vibrate as the actuating cam 5 rotates.

The rear end of the operating contact piece 6 is positioned by a support piece 6b inserted into a hole in the circuit board 8, and is fixed to this board by soldering. Further, this rear end portion is electrically connected to a copper foil 9 that is an electrode portion provided on the circuit board 8. The tip of the actuating contact piece 6 can be moved into and out of contact with a copper foil 10 that is an electrode part provided on the circuit board 8. The actuating contact piece 7 is also attached to the circuit board 8 like the actuating contact piece 6, and its rear end is covered with a copper foil 9.
a (Fig. 2), and the tip is connected to the copper foil 10.
It is possible to come into contact with and separate from it.

In addition, a click spring plate 11 is attached to the middle case 4, as shown in FIGS.
is arranged in a direction perpendicular to this Reuse stem. Both sides of the click spring plate 11 are inserted between the holding parts 4a and 4b of the inner case 4 so that they can be inserted and removed. The click spring plate 11 has spring parts 11b and 11c formed on the left and right sides by a long hole 11a bored in the center as shown in the second figure.
Both spring portions are perpendicular to the rear stem 2. One spring portion 11b has a projection 5 of the click wheel 5 on the lower surface.
b, . . . are pressed to the limit that does not interfere with the rotation of this click wheel, and clicks are made in the direction of rotation.
The other spring portion 11c has a click claw 11 on its lower surface.
d protrudes, and normally clicks at the position of the click portion 2b of the crown 2, which is located inside the click pawl (on the left side in FIG. 3).

The spring portion 11c moves the click claw 11d with respect to the click portion 2b which moves with the movement of the reuse stem 2.
The spring force is applied to the limit that overcomes the
Reuse has a true axial click. As shown in FIG. 3, one stopper portion 2a for preventing detachment can come into contact with the inner end surface (left end surface in FIG. 3) of the spring portion 11c of the click spring plate 11.
Further, the other stopper part 2c for preventing over-pushing can come into contact with the outer end surface of this spring part.

Furthermore, near the tip of Reuse stem 2, there are second and third
As shown in the figure, a contact plate 12 is fixed to a circuit board 8 at one end thereof. The tip of the contact plate 12 is
As the reuse stem 2 moves forward and backward, it comes into contact with and separates from the shaft 13 standing up on the circuit board 8, thereby opening and closing the switch. This switch is used in mode change switches such as alarm switches and stop switches, and lighting lamp switches.
In FIG. 3, the alarm switch is shown in an open state, and the alarm time can be adjusted with the switch closed. 14 is a buzzer.

Next, the operation of the present invention will be explained.

To adjust the time in the state shown in Figures 2 and 3, for example, by rotating the crown 3 clockwise, the click wheel 5 rotates in the direction of the arrow in Figure 5 (counterclockwise). 5b, . . . move against the spring force of the spring portion 11b of the click spring plate 11 while slightly lifting this spring portion upward, so that the click wheel rotates with a click feeling. Along with this rotation, the operating contacts 6 and 7 located on the lower side of the click wheel 5 vibrate due to the projections 5a, 5b, . Each switch is opened and closed repeatedly. At this time, the protrusion 5a,
... and 5b, ... correspond with a certain angular phase. For example, as shown in FIG. 6, if the switch on the operating contact 7 side closes first, the operating contact 7 will The switch opens and closes so that the side switch closes.

As a result, pulse signals having mutually different phases are generated, and the time advance is corrected. On the other hand, if the crown 3 is rotated in the opposite direction, the crown 2 rotates while being clicked clockwise, so that the switch on the operating contact 7 side opens and closes with a slight delay from the closing of the switch on the operating contact 6 side. If the reuse 3 continues to rotate, the switch will be opened and closed with a certain phase difference, thereby correcting the time delay.

When adjusting the alarm time, pull the Reuse 3 in the direction of the arrow in Figures 2 and 3. Since the Reuse stem 2 moves to the right as shown by the chain line, the pressure on the contact plate 12 is released at the tip. The contact plate contacts the shaft 13 and the switch closes. At the same time, the click portion 2b moves over the click pawl 11d of the click spring plate 11 to the right. Since the stopper portion 2a eventually comes into contact with the inner end surface of the spring portion 11c, further movement of the reuse stem 2 is restricted even if it is further pulled, thereby preventing the reuse stem from coming off. In addition, since the click wheel 5 is loosely fitted to the reuse pin 2,
The position of the click wheel is not affected by the movement of the reuse wheel.

Therefore, each protrusion 5a,...,5 of the click wheel 5
b, . . . are maintained in a state in which the operating contact pieces 6, 7 are in elastic contact with each other. Therefore, if the reuse 3 is rotated clockwise, the alarm time is adjusted to advance in the same manner as in the case of time adjustment described above, and when it is rotated to the left, the alarm time is adjusted to be delayed. After the correction operation is completed, push in the crown 3 and the click part 2b of the crown 2 will release into the spring part 11.
It climbs over the click claw 11d of c, returns to its original position, and is clicked. At this time, the stopper part 2c
Since the spring portion 11c comes into contact with the outer end surface of the spring portion 11c, the reuse stem 2 is prevented from being pushed in too much.

In FIG. 2, the spring portion 11b of the click spring plate 11 may be pressed against the protrusion 5a side of the click wheel 5. In this case, a stopper portion for preventing detachment is provided on the left side of the reuse stem of the protrusion 5a to prevent the spring from coming off. The inner end surface (left end surface) of the portion may be able to come into contact with the inner end surface (left end surface). The stopper portion 2a may be able to come into contact with the outer end surface (right end surface) of the spring portion 11b to prevent the spring portion 11b from being pushed in too much. Furthermore, although the stopper portions 2a, 2c and the click portion 2b are provided integrally with the reuse stem 2, they may be constructed as separate members from the reuse stem.

[Effects] As explained above, according to the present invention, with a simple configuration and a small number of parts, it is possible to reliably click the shaft in two directions, the axial direction and the rotational direction, and also prevent the shaft from coming off and preventing the shaft from being pushed in. It is also easy to manufacture and assemble, and its effects are great.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view of the outer case of the watch, FIG. 2 is an enlarged sectional view of the main parts, FIG.
The figure is Fig. 3 - Line sectional view, Fig. 5 is Fig. 3 -
6 is an explanatory diagram showing the relationship between the click wheel and the operating contact piece, FIG. 7 is an enlarged front view of the click wheel, and FIG. 8 is a sectional view taken along the line taken in FIG. 7. DESCRIPTION OF SYMBOLS 1... Frame (exterior case), 2... Shaft (reuse stem), 2a... Stopper part for preventing detachment, 2b...
...Click part, 2c...Stopper part for preventing over-pushing, 5...Click wheel, 5b...Protrusion, 11...
...Click spring plate, 11b, 11c...spring part,
11d...Click part (click claw).

Claims (1)

[Scope of Claims] 1. A shaft rotatably and movably supported on the frame; a click wheel pivotally supported on the shaft so as to be movable in the axial direction relative to the shaft but non-rotatably; a click portion provided on the shaft; a spring portion that engages with the click wheel and clicks the click wheel in the rotational direction of the shaft; and a spring portion that engages with the click portion and rotates the click portion in the axial direction of the shaft. 1. A click mechanism characterized by comprising: a spring portion that clicks in the spring portion; and a click spring plate installed in a direction intersecting the axis. 2. A shaft rotatably and movably supported on the frame; a click wheel pivotally supported on the shaft so as to be movable in the axial direction but non-rotatably relative to the shaft; and a click wheel provided on the shaft. a click portion; a spring portion that engages with the click wheel and clicks the click wheel in the rotational direction of the shaft; and a spring portion that engages with the click portion and clicks the click portion in the axial direction of the shaft. is integrally formed, and is provided with a click spring plate installed in a direction intersecting the above-mentioned axis, and a detachment prevention stopper part provided on the above-mentioned axis and capable of coming into contact with the above-mentioned click spring plate. A click mechanism featuring 3. A shaft rotatably and movably supported on the frame, a click wheel pivotally supported on the shaft so as to be movable in the axial direction relative to this shaft but not rotatable, and a click wheel provided on the shaft. a click portion; a spring portion that engages with the click wheel and clicks the click wheel in the rotational direction of the shaft; and a spring portion that engages with the click portion and clicks the click portion in the axial direction of the shaft. is integrally formed and includes a click spring plate installed in a direction intersecting the axis, and a stopper part for preventing over-pushing that is provided on the axis and can come into contact with the click spring plate. A click mechanism characterized by: