DE2314130A1 - SETTING DEVICE FOR AN ELECTRONIC CLOCK - Google Patents

Description

DIPL.-PHYS. F. FINALLY eos * unterpfaffenhofen 21.3 .1973

PATENT ADVERTISER 231 A 130 ^ ⁸ ™ ⁰¹ E / Ei *

TELEPHONE O8II / 84 3β 38

TELEGRAM ADDRESS: PATENDLY MUNICH DIPL.-PHYS. F. FINALLY. 8O34 UNTERPFAFFENHOFEN. P.O. BOX

CABLE ADDRESS: PATENDLY MUNICH

TELEX S 212 3Οβ

My file: D-3218

Applicant: Kabushiki Kaisha Daini Seikosha, 31-1, 6-chome, Kameido, Koto-ku, Tokyo, Japan

Setting device for an electronic clock

The invention relates to an adjusting device for an electronic clock according to the preamble of the claim 1.

Known electronic watches have no switching devices of the electronic circuit, which is why a disadvantageous one Force is exerted on the motor and gearbox when the hands are adjusted. With other known watches a special switching mechanism is provided, in which, however, a changeover is required, which is not done by actuation the crown is switched over when setting the hands so that accurate pointer adjustment is difficult. Furthermore occurs In the known indirect central seconds system, there is play between a third wheel and a central seconds wheel, so that the game disadvantageously causes deviations from a suitable pointer setting. Through the invention disadvantages of the type mentioned should be avoided as far as possible.

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23 H 130

It is therefore the object of the invention to provide a device for an electronic watch in which a gear lever is rotated about an axis by a transmission member that is in Depending on the adjustment of the winding shaft is pivotable, so an electrical switch through the formation of a to form elastic part at one end of the shift lever with a shift pin. Furthermore, for such an electronic A start and stop device are created, in which the intermediate part of the transmission member against a Friction disc can be pressed or lifted therefrom, which is provided on a third wheel, depending on the adjustment the winding shaft and in an inverse relationship to the closing or opening of the electrical switch.

This object is achieved by the characterizing part of claim 1.

The invention is to be explained in more detail, for example, with the aid of the drawing. Show it;

Fig. 1 is a plan view of an embodiment game according to the invention; and

Fig. 2 is a vertical section through a gear train of an indirect system in a device according to the invention.

In Fig. 1, a transmission member 1 is provided, which serves as a transmission lever and as an adjusting lever and is rotatably arranged on a shaft 2. One end of the transmission link 1 can be operated by the tip 3 of a winding shaft , while the other end thereof is provided with a transmission pin 4. A shift lever 5 has at the end 5a an elongated opening 5b into which the transmission pin 4 is inserted by a circuit block C. The switching lever 5 has a flexible spring member 5c at its upper end, is rotatably arranged on a spindle 7 on a bridge 6 and is fastened by a screw 8. The flexible spring member 5c of the switching lever 5 has a contact 5d at its end, which is in contact with a switching pin 9 on the circuit block C. The switching

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pin and the contact form an electrical switch for starting and stopping. The transmission member 1 can by a Spring IO are rotated clockwise, which is attached at one end to a part 11 of a plate 16 and in contact with the base end of the transmission pin 4 at the other end. The switching pin 9 is fastened with a solder bump 12.

Fig. 2 shows a gear train of an embodiment of an electronic watch with an indirect central seconds system. The gear train contains a third wheel 15, a third gear 14 between the bridge 6 and a support device 13, a central second gear 19 which meshes with the third gear 15 and on a second shaft is arranged, which in turn is inserted into a central tube 17 of a plate 16. A tube 21 engages the minute wheel 20, which meshes with the third gear 14. An hour wheel 22 is engaged with the tube 21. A friction disc 23 is arranged coaxially with the third wheel and the third gear 14. The friction disk 23 is opposite laterally arranged to the transmission member 1. This arrangement forms the adjusting mechanism for the second hand. the Friction disk 23 can be connected to a material with a high coefficient of friction in order to reduce the frictional forces exerted to increase. Optionally, the entire friction disc can consist of an annular rubber member. The transmission link 1 has preferably a notch la that is in contact with the friction disc 23 reached.

The transmission member 1 is pivoted into the position shown in dashed lines against the action of the spring 10, when the tip 3 of the winding shaft is moved inwards into position a in FIG. Then there is the gear lever 5 in the position indicated by solid lines in Fig. 1, due to the attack of the transmission pin 4. The Contact 5d of the switching lever comes into contact with the switching pin 9, whereby the electrical switching mechanism is closed

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will. The notch la is then moved away from the friction disk 23. Therefore, the normal movement of the pointer can take place. A driving force is thereby generated via a fourth wheel and a fourth Gear (not shown) transmitted via the third wheel 15 to the central second gear 19, which meshes with it stands to rotate the seconds shaft 18 and the minute wheel 20 via the third gear 14 to rotate the tube 21.

The manual setting of the second hand will be explained in more detail below. For manual adjustment is the winding shaft is pulled out so that the transmission member 1 moves around the shaft 2 due to the bias of the spring 10 turns. In this case, the notch la of the lever 1 is pressed against the friction disk 23 to the rotational movement of the friction disk 23 and the third wheel 15 to stop. Therefore, the second gear 19 is not rotated by the third wheel 15, so that the second hand on the second shaft does not move. In the meantime, the shift lever 5 is turned clockwise around the Spindle 7 twisted. The rotary movement of the shift lever 5 is through the longitudinal slot 5b, in which the transmission pin 4 on the lower end of the transmission link 1 protrudes, set. When the contact 5d on the spring member 5c of the switch pin 9 is separated because of the rotary movement of the switching pin 9 when the switching lever 5 is pivoted, the electrical one Switching mechanism switched off. Further, when the watch crown is rotated in this state, rotating force is applied to the tube 21 transfer a dial. Therefore, the minute hand and hour hand can be adjusted. In this way you can manual adjustment can be carried out without affecting the movement of the second hand. It can be seen that there are no difficulties against the engagement between the minute wheel 20 and the tube 21 because they are in frictional engagement with each other stand, although the minute wheel 20 and the third gear 14 do not cause any rotation.

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23H13Q

In the above embodiment, it is possible to stop the second hand precisely when setting the hand. The transmission link 1 is rotated by the spring 10 when the crown is pulled out for the hand setting, whereby the shift lever 5, which is in engagement with the transmission member 1 via the transmission pin 4, is adjusted. The switching pin 9 is separated from the contact 5c of the switching lever because of its rotation. The notch la on the transmission link 1 comes into contact with the third wheel 15, so that its rotation is stopped. The second hand will further stopped by the central gear 19 which meshes with the third wheel. So step on the seconds do not show any setting deviations, so that setting errors can be avoided. The power consumption of the battery is low because no current flows through the electrical circuit while the hands are being adjusted. It is also possible to use a to cause the exact start of movement of the second hand when the crown is pushed in, because the friction disc 23 is then from the transmission member 1 is released and the electrical switch by the contact of the shift lever 5 with the switch pin 9 is closed.

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Claims (3)

23H130 patent claims before 1. Switching device for an electronic clock, thereby characterized in that a gear wheel is stopped to readjust the second hand when the electric Circuit is opened as a function of an adjustment movement of the winding shaft, while a movement occurs when the electrical circuit is closed depending on the movement in the opposite direction. 2. Switching device according to claim 1, characterized in that that a transmission member (1) is arranged to be pivotable by an adjustment movement of the winding shaft (3), that a switching lever (5) with a spring member (5c) can be pivoted as a function of the pivoting movement of the transmission member (1) is arranged that a switching pin (9) is arranged on a plate and with the spring member (5c) in contact that the electrical circuit of the clock with the switch lever (5) and the switch pin (9) for drive and control the electronic clock is in communication, and that the Switching pin (9) can come into contact with the spring member (5c) depending on the adjustment of the winding shaft in order to achieve the to close or open an electrical circuit. 3. Switching device according to claim 1 or 2, characterized in that that a gear wheel is provided with a friction disc (23) that a part (la) of the transmission member (1) with the friction disc (23) depending on the adjustment of the winding shaft (3) in an inverse relationship engaged to open or close the electrical circuit can get so that the gear is stopped to regulate the second hand when the electrical circuit depending on the adjustment of the winding shaft is opened, while a drive takes place when the electric Circuit is closed depending on the other setting of the winding shaft. 309840/0930