DE2110674A1 - Electric clock - Google Patents

Description

Dipl in .; Home tester. Pn! EnMi. * O> * »■ - ■ * $» .'- ·· -.->. 8 " .pm- -vlf. ^ Ft S "Wf.f. lC811) 48 3320

Kabushiki Kaisha Suwa Seikosha

3-4, 4-chome, Ginza, Chuo-ku,

Tokyo / JAPAN L 9348 / L / ho

Electric clock

The invention relates to the magnetic coil design of an electric clock with permanent magnets mounted on the balance.

The object of the invention is to improve the magnetic coil of an electric watch with permanent magnets mounted on the balance and provide a cheap electric clock. In the electric clock with permanent magnets mounted on the balance, in which the unrest provided with a permanent magnet is driven by an externally arranged magnetic coil is, the magnetic field strength is increased and the turns on the magnet coil are increased to at a low Power consumption to get a wide amplitude of unrest.

That is why a highly effective magnet has been made of platinum up to now Cobalt is used as a permanent magnet and a very thin wire has been tightly wound around the magnet coil to keep the parts around to make the unrest small, with the result not only of high costs of the permanent magnet and a round wire on the Solenoid as well as the difficulty of manufacturing and handling the solenoid during installation.

In order to eliminate the above disadvantages when a Permanent magnet used at low price must be dte shape

109843/1080

Dipl. In3

'fiz It- .f, Pui

AS Ϊ320

A ■ - '.

- 2 -

of the magnet must be extended in order to achieve the necessary magnetic field strength, or a very thin wire must be attached the magnetic coil must be wound so that the watch can be operated even when the magnetic field strength is small. However is In any case, this is not desirable for the watch to work properly.

The object of the invention is a compact size of magnet and magnet coil and low production costs by switching them off to achieve the disadvantages indicated above, i.e. to provide a method by which, by means of a magnetic coil, With thick wire and a small number of turns, perfect work is made possible.

The invention is illustrated in the figures of the drawing. Show it:

Fig. 1 is a front view of a balance and the magnet coils of the usual type of electrical clocks with on the Unrest mounted permanent magnets,

2 shows a plan view of the unrest and the magnate coils,

Fig. 3 shows an embodiment of a drive circuit of the usual design of electric clocks with permanent magnets mounted on the balance,

Fig. 4 curves of the voltage profile of each part of the drive circuit the usual design of electric clocks with permanent magnets mounted on the balance,

Figure 5 is a front view of the balance and solenoids of an electric watch with the balance mounted on it Permanent magnets according to the invention,

6 shows an embodiment of the magnetic coil according to the invention,

7 graphs of the voltage profile of each part of the drive circuit the electric clock with permanent magnets mounted on the balance according to the invention.

10 9 8 4 3/1080

Dip! IfiO Hem; reader. P.-teot Jr.wQ JD -8 '-'V- »- 81. C - .; 5i-;»' iL-h. » k ' 1 ~, efon (081H 48 3820

Fig. 1 is a front view of the unrest of an electric Clock of conventional design with permanent magnets mounted on a balance consisting of two disks. 2 is a balance wave, 3, 4, 5 and 6 are permanent magnets. * 3 and 5 are arranged in the order corresponding to 4 and 6, 7 is the phase indicator or control solenoid, 8 the drive or work coil.

Fig. 2 is a top view of Fig. 1. 9 is a solenoid frame; 10, 11 are counterweights to adjust the unrest. 12 corresponds to permanent magnets 3 and 4, and 13 corresponds to the permanent magnets 5 and 6. 14 is a magnetic coil.

In Fig. 1, the magnet coil is formed together with the display or control magnet coil 7 and the drive or work coil 8. It is also known that the display or control magnet coil and the drive or work coil are formed into a unit by winding both coils together.

Fig. 3 shows an embodiment of the drive circuit of the electric clock with permanent magnets mounted on the balance. In Fig. 3, 15 is the display or control magnet coil, 16 is a capacitor to cut off the direct current, 17 is a base bias resistor, 18 is the drive or working magnet coil t 19 is a drive transistor and 20 is a direct current voltage! source.

Fig. 4 shows curves of the voltage profile of A, B, C des Drive circuit in the case of the drive of the unrest according to Fig. 1. A curve of the voltage course, induced on the display or control solenoid 15, is indicated by a dashed line in fig. 4 (A) shown. The curve is in the response time dropped in a range in which the drive transistor is operated, as shown by the solid curve is shown when the voltage drop of the internal resistance due to the electric current flowing in the display or control solenoid 15, is added. The on the JCoIlektorseite of the drive or work coil 18 induced

109843/1080

Dip! -Ing H-in / li'-er. Patent attorney

■ J ¹ . <.os-Tostr.-n V '.iV | oM (0811) 48 3820

ί-i '■ -'

Voltage has an opposite phase to that produced by drive or work solenoid 15, as in FIG Fig. 4, and when the base voltage increases above the supplied base height of the drive transistor, the flows electrical current in the base through the display or control solenoid 15 and a collector voltage C of the drive transistor drops to the conductive level.

At this point in time, the capacitor for separating the current 16 is charged by the current flowing from the display or Control solenoid to the base flows. The charging voltage is used to bias the base, the drive transistor in the to keep locked state when the drive transistor is switched off. This can be seen from Fig. 4B. One on dej positive side of the voltage to be rectified is the peak value that has occurred as a result of the oscillation of the unrest not the same as in the case when the balance rotates clockwise or counterclockwise, or in the case of the current flowing in the base.

Therefore, there is a difference in the base bias voltage V. between immediately before the occurrence of a single drive pulse and a double drive pulse that has occurred. If the base voltage resistance is too small, the drive transistor rises into the conductive area before the only driving impulse has come about, and useless electricity consumption has increased. When the base bias resistance is too large, a neaative basic bias becomes increase, the magnitude of the driving impulse and the oscillation amplitude are weakened. So the base bias resistance has jd a suitable size range to ensure the working of the unrest, and it is necessary that double the rectifier voltage is large enough in the upper value range.

Because the negative bias, which came about immediately before double the detector voltage, increased too much is, the drive transistor cannot be completely

109843/1080

Drpl -Ing. Ηί-ιηι lessef, patent attorney DB Μ ..-. ^ NB ¹ , Γο ^ ι-ι-.ΙΐφΓ phone (0811) 483820

if there is not enough rectifying voltage, and an internal drop in the transistor is started and the vibration of the unrest is weakened.

So it is clear from above that turns should be added to the indicator or control solenoid to provide enough indicator or Control voltage. However, turns on the drive or work magnet coil should be reduced by the To take the coil in a limited space. As a result of this, that induced on the drive or work solenoid is induced Voltage reduced, the increased power consumption is not converted into energy for the unrest and the people Oscillation amplitude is reduced. To the disadvantage above .-. To ver report, there are many more turns of very thin wire on de: Solenoid added in the known manner.

The object of the invention is to provide a method in which Windings on the display or control solenoid are reduced. Fig. 5 is a front view showing the unrest of a Shows embodiment of an electric clock with magnets mounted on the balance according to the invention. In Fig. 5 is 21 a driving or working magnet coil, 22 a display or control solenoid.

Fig. 6 is a plan view of the solenoids 21 and 22. 23 let a connection inside, 24 is a connection point between the driving or working magnet coil 21 and the display or Control solenoid 22, 25 an external connection and 26 a solenoid frame.

Fig. 7 shows the curves of the stress profile of each part, when the turns of the display or control solenoid and drive or working solenoid are coaxially wound. Fig. corresponds to FIG. 4. Since the turns of the magnet coils are coaxial are wound, the magnet pairs 3, 4 and 5, 6 are not made the same by the display or control solenoid Time flows through it so that the peaks at the positive

1098A3 / 1080

Dip! -Ing H "inz Letter, P.itentanwa-t D S". · Ir 3 '. Cos-t .uilrofce H' T. it {on (0811) 48 3820

and negative sides of the induced voltage developed in the display or control magnet coil 22 are the same as shown in FIG. The base bias is almost the same immediately before the single and double generated drive pulses as shown in Fig. 7 (B). And the difference V _ßl is much smaller than V _ß in Fig. 4 (B).

Therefore, even if the peak value - the double display « voltage is small, the driving transistor conducts well since the negative base bias is weakened, and turns on the display or control solenoid 22 are reduced. In this way, cheaper thick wire can be used. One The phase of the driving current is shifted a little to a phase in which the driving current to the magnet is at its maximum of energy, but actually there is no difference. And since the magnetic coil according to the invention is the connection point 24 can connect to an electrical source is * cias advantageous for the arrangement of the coil connections.

As described above, in the invention, the windings on the display or control solenoid of an electric clock with magnets mounted on the balance and consequently, how turns on the drive or working magnet coil can be increased, the magnet coil can can be made by using a slightly thicker wire.

As a result of this, an inexpensive spool and ease of use can be achieved, which is very beneficial to the This type of electrical clock is mass produced. Furthermore cheap magnets are used because the display voltage according to the invention can be small.

109843/1080

Claims (1)

Ο · ρΙ Ing HfM U ·. ·· 'P. t ^ n!, - inwall O "> · ■■' <· ■> * 'Jos, rti.: ■ ■ ~ In, f. | On (08U) PATENT CLAIMS Electric clock with permanent day-I mounted on the balance neten, characterized by one from; two discs, above and below, produced unrest, two I pair of permanent magnets facing each other on the discs are arranged above and below, and display or control I (22) and driving or working magnet coils (21), the outside! mounted half of the unrest and in a gap between the I permanent magnets are arranged. : 2. Electric clock according to claim 1, characterized that the Anzeioe- or control solenoid (22) is designed so that the peak values in 'a range of positive and negative sides of the these display or control solenoid (22) induced ^! Display or control voltage are almost the same. 3. Electric clock according to claim 1, characterized in that j indicates that a wire of the display • or control solenoid (22) is coaxially wound within • the driving or working magnet coil (21). 109843/1080