JPS635150Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a contact signal generating device in a timing device for an electronic watch.

(Prior Art) The applicant of the present application has previously proposed a timekeeping device that makes it possible to easily adjust the time display of an electronic digital watch (for example,
(Special Application No. 52-62427). This timing device has a plurality of electrodes formed at predetermined intervals on the outer circumferential surface of a rotating drum that is rotatably mounted on an operating shaft, and two contact pieces are attached to and separated from the electrodes at slightly shifted positions. In this manner, a timing switch was constructed, and the timing switch was opened and closed according to the direction of rotation of the rotary drum to produce an up-count or down-count output to adjust the timing.

The mechanical structure of the contact signal generator in this timing device is that a rotating drum made of insulating material is fixed to the operating shaft, and a plurality of electrodes are arranged along the axial direction of the drum at predetermined intervals on the outer peripheral surface of the drum. The outer circumferential surface of this drum was provided with contact pieces that contacted and separated from the electrodes at slightly shifted positions.

(Problem to be solved by the invention) However, it is difficult to form multiple electrodes at precise positions at predetermined intervals on the outer peripheral surface of the drum, which is a curved surface.
It was technically very difficult, had low productivity, and had the disadvantage of high manufacturing costs.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a signal generating device that can be easily manufactured at low cost in terms of actual manufacturing and assembly.

(Means for Solving the Problems) A feature of the present invention is that grooves are formed at predetermined intervals in the axial direction on the circumferential surface of a non-conductive rotating body that rotates in conjunction with the operating shaft, and grooves are formed on the contact plate at predetermined intervals. A conductive part that fits into the groove is integrally formed, a hole is provided in the rotating body and the contact plate, and the operating shaft is fitted in a non-rotatable manner, and further, The two contact pieces are arranged so as to approach and separate from the conductive part with a slight phase shift when the rotating body rotates.

(Function) According to this configuration, by simply fitting the conductive part of the contact plate into the groove of the rotating body and fitting the operating shaft into the hole of the rotating body in a non-rotatable manner, the outer circumferential surface of the rotating body Non-conductive parts and conductive parts are formed at predetermined intervals.

(Example) An example of the present invention will be described below based on the drawings.

As shown in FIG. 1A, the knob 1 is provided with an operating shaft 2 made of a conductive material, and a contact plate 3 attached to this operating shaft is made of a conductive plate material made of gold-plated phosphor bronze. As shown in FIGS. 2A and 2B, the conductive portions 3b are bent in the axial direction from the outer periphery of the disk-shaped base 3a, and extend at equal intervals and with equal widths. A hole 3c through which the operating shaft 2 passes is provided at the center of the base 3a. The cross section of the operating shaft 2 has a partially flat surface as shown in Figure 1B, and the internal shape of the hole 3c is almost the same as the outer shape of this operating shaft. When fitted, they cannot rotate with each other, so that the contact plate also rotates in conjunction with the rotation of the operating shaft. The rotating body 4 through which the tip of the operating shaft 2 passes is made of a non-conductive material, and its shape is as shown in FIG. A hole 4c is provided, which is substantially the same as that of the contact plate 3, through which this shaft passes.Therefore, when the operating shaft 2 is fitted into this hole, similarly to the contact plate 3, the operating shaft 2 moves in conjunction with this operating shaft. Furthermore, the outer periphery of the rotating body 4 is
As shown in Figure A, it is divided into three stages, and a star-shaped click wheel 6 is integrally formed on the right side of the central flange 5, and a non-conductive train 7 is integrally formed on the left side. Grooves 7a along the axial direction and non-conductive parts 7b are alternately formed on the outer periphery of the non-conductive line 7, and the conductive parts 3b of the contact plate 3 can be fitted into these grooves. . The contact plate 3 is brought into close contact with the non-conductive line 7, and its holes 3c and 4 are
If the operating shaft 2 is passed through c, they will not be able to rotate relative to each other as described above.

In this way, on the circumferential surface of the rotating body 4, the conductive parts 3b and the non-conductive parts 7b are arranged alternately in the circumferential direction.

Therefore, by simply fitting the conductive portion 3b of the contact plate 3 into the groove 7a of the rotating body 4 and fitting the operating shaft into the contact plate and the hole of the rotating body in a non-rotatable manner, the outer periphery of the rotating body can be adjusted. Non-conductive portions 7b and conductive portions 3b are formed at predetermined intervals on the surface.

In addition, as shown in FIGS. 4 to 6, the middle case 8
is provided with a switch holder 9 (Fig. 5), which allows the operation shaft 2, contact plate 3,
The rotating body 4 is rotatably held, and a click protrusion 10 (FIG. 6) is provided at a position along the collar 5.
The rotating body 4 can slide over this protrusion 10 in the axial direction.

The upper ends of contact pieces 11, 12, 13, and 14 are fixed to the holder 9. The contact piece 11 is grounded, and its tip is always in elastic contact with the tip of the operating shaft 2, which is a conductor. The tip of the contact piece 12 faces the base 3a of the contact plate 3, and as the operating shaft 2 moves in the axial direction, this contact piece moves toward and away from the base. The tips of the contact pieces 13 and 14 come into contact with the circumferential surface of the conductive part 3b of the contact plate 3 fitted to the rotating body 4 at a position slightly deviated from the symmetrical position, as shown in FIG. It is now possible to make contact with the bullet with a slightly different timing. Further, the upper end of a click spring 15 is fixed to the holder 9, and its tip is in elastic contact with the click wheel 6. Furthermore, 16.1
7 is an upper case and a lower case.

When the knob 1 is pushed to the right as shown in FIG. The switch opens and enters the display mode, and the display position (not shown)
The time is displayed.

When the knob 1 is pulled out to the left from the position shown in FIG. 6, the collar 5 passes over the click protrusion 10 and is located on the left side thereof. For this purpose, the contact piece 12 comes into elastic contact with the base 3a, closing the switch and entering the correction mode.

In this state, when the knob 1 is rotated, for example, to the right, the contact piece 13 first comes into contact with the conductive part 3b, and a little later the contact piece 14 comes into contact with the conductive part 3b.In this case, the clock is adjusted in the direction of advancing the time. It is something that
When rotated in the opposite direction, the contact piece 14 comes into contact with the conductive part 3b first, and the contact piece 13 comes into contact with the conductive part a little later, and in this case, the time is corrected to be delayed.

(Effects of the Invention) According to the configuration of the invention, it is easy to form the conductive part and the non-conductive part, so it can be manufactured at low cost with excellent productivity. Furthermore, since the positional accuracy of the conductive portion can be increased, the synchronization and stability of the switch operation can be improved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
1A, 2A, and 3A are respectively exploded front views, FIG. 1B is a sectional view taken along the line of FIG. 1, and FIGS. 2B and 3B are left side views of FIGS. 2A and 3A, respectively. 4 and 5 are cross-sectional views of the contact signal generator section, and FIG. 6 is a sectional view of the contact signal generator section.
It is a figure-line sectional view. 2... Operating shaft, 3... Contact plate, 3b... Conductive portion, 3c... Hole, 4... Rotating body, 4c... Hole, 7a... Groove, 13, 14... Contact piece.

Claims (1)

[Claims for Utility Model Registration] An operating shaft; a non-conductive rotating body that rotates in conjunction with the operating shaft; grooves formed at predetermined intervals in the axial direction on the circumferential surface of the rotating body; a contact plate integrally formed with a conductive part to be fitted; a hole formed in the rotating body and the contact plate and fitted with the operating shaft in a non-rotatable manner; A contact signal generating device in a timing device for an electronic watch, comprising: two contact pieces arranged to approach and separate with a slight phase shift with respect to the part.