DE1673786C - Electronically controlled clock drive - Google Patents

Description

is stored. The drive takes place via the timing Limb itself, so that very good efficiency is achieved. In addition, no mechanical switchover is necessary in the event of a failure in the supply network, whereby the operational safety is considerably increased.

At Har.d the drawing, in which an embodiment is shown schematically, the invention explained in more detail. It shows

F i g. 1 the drive system with the for the invention essential parts,

F i g. 2 the position of the parts when a. Drive pulse and

F i g. 3 is a top view of the anchor.

1 with a balance is referred to, the axis 2 is preferably stored in .Steinfagern 3.4. The unrest 1 is provided in the usual way with an oscillating spring, not shown in the drawing, whose one end is connected in the usual way with an index pointer for the purpose of adjustment. The unrest I is provided on the circumference with a bar magnet 5, which is polarized in opposite directions with respect to this Prongs 6 of an anchor 7 cooperates. The armature 7 is attached to an axis 8, which in the Bearings 9 and 10 is stored. A fixed on the axis 8 gear 11 is used to drive one in the Drawing not shown pointer mechanism.

The distance between the polarized prongs 6 corresponds to the oscillation range of the magnet S of the balance 1. At the end of the range of visual oscillation of the magnet 5 of the balance 1 there is a core 12 a drive magnet 13 is arranged. With its excitation coil 14 is designated, which can be connected to DC voltage via a transistor 15. Upstream of the drive magnet 13 is a Hall generator 16 which is used to control the transistor 15 serves. The control electrodes of the Hall generator are connected to DC voltage, this voltage being one of the Line frequency proportional voltage is superimposed.

If a in F i g. 3 armature shown with three pole points is used, the unrest oscillates 1 and thus also the magnet in an angular range of 120 °. When the magnet 5 swings out the area of the drive magnet 13, the magnet 5 reaches the position shown in FIG. 1 position shown, takes the armature prong 6 with it during the swing-back process through magnetic coupling and guides it into the in F i g. 2 position shown. At this point the Hall generator is activated by the flux of the magnets 5 and 6 interspersed. The voltage delivered to the electrodes of the Hall generator 16 controls the Transistor 15, so that the drive magnet 13 is magnetized in the manner shown in FIG. This has the consequence that the armature prong 6 is held in the sequence, while the magnet 5 of the Restlessness is repelled in the direction of oscillation as a result of the poles having the same name. The magnet 5 thus swings back into the position shown in FIG. 1 and takes the next pole point 6 of the anchor with. As soon as the magnet 5 leaves the area of the Hall generator, it extends to the Hall generator 16 no longer effective field in order to keep transistor 15 open. Depending on the spatial The arrangement of the parts 5, 6, 12 relative to one another can determine the length and strength of the unrest 1 Drive pulse can be influenced. A particularly good effect results when the length of the magnet 5 is dimensioned so that both pole ends extend into the area of the pole ends of the magnet 13.

If you superimpose an alternating current with 50 Hz on the control current of the Hall generator and leave the Unrest oscillate at 61/4 Hz, so you can force a synchronization of the clock drive.

1 sheet of drawings

Claims (4)

1 2 Another possibility for creating a Uh patent claims: ren drive consists in an electronically controlled direct current drive, whereby one consists of a per- 1. Electronically controlled clock drive, with mancntmagneten existing unrest of a fixed on two aligned axes one with a 5 standing drive coil over a transistor control Unrest provided with permanent magnets and a magnetic drive pulse received. spiked rotatable armature, which in a known design (German Auslemit a pointer mechanism of the clock in Antriebsverbin- geschrift 1 231 174) of this type, is for transmission, are arranged, the distance between the unrest movement on the pointer mechanism being a Mader Zacken dem effective torsional oscillation angle io gnetkupplung provided, which corresponds to the unrest of the Tnebspule and the rotatable armature is also controlled. For this purpose, the rotation at the end of the effective torsional oscillation angle is included. On the axis of the permanent magnet, a special magnet system is held in place by the drive aid of a fixed coil magnetizable soft iron rod that acts on a prong, rather in a magnetized state with a toothed wheel coupled with the prong 15 pointer mechanism magnetically ( 6) of the rotatable armature (7) engages in the opposite direction and takes it along with the permanent magnet (5) of the unrest (I) pt) by a certain angle. At the end of the angle of rotation there will be a zaklarized and that in an end position of the ken of the toothed wheel of a fixed per-oscillation area of the balance (I) one of constant magnets will be held. This known magnetic system which can be excited by current is arranged, 20 guidance is not only complex, but also requires that a very precise production and adjustment be carried out in advance of the magnet system (13).
Gerten Hall generator (16) can be controlled in such a way, Hei another known version of this that each of the magnets (5) of the unrest type (German Auslegcschrift 1 235 821), the (I) entrained armature prongs (6) is held transferring the unrest movement to the Zeigeruiul the magnet (5) of the balance (I) repelled a ₅ work via a pawl and a ratchet wheel that works together with this. The mechanically 2. Clock drive according to claim I, characterized by cooperating parts of the pawl and the indicates that the control current of the Hallgene ratchet wheel is subject to natural wear, rators the AC line voltage is superimposed. which increases the lifespan of the watch 3. Clock drive according to claim I or 2. da- 30 shortens. characterized by the fact that the anchor prongs are also an electronically controlled watch IXO '' are arranged offset from one another. drove known (German interpretation 1241370), 4. Clock drive according to one of claims I in which one of the permanent magnets of the unrest gebis 3, characterized in that the magnet-controlled Hall generator is a drive coil of a fcststeder Unrest is a bar magnet that steers towards 35 current magnet system. A transfer of the the oscillating axis is arranged and such a restless movement on the pointer mechanism is not here Lung has that its pole ends are shown in the. The area of the poles of the preferably horseshoe-shaped. The invention relates to an electronic trained magnet system extend. controlled clock drive, in which on two aligned 40 the axes are provided with a permanent magnet unrest and a rotatable one provided with teeth Armature, which is in Aiittriebsverbindungen with a pointer mechanism of the clock, are arranged, wherein A synchronous motor, the distance between the prongs and the effective rotation, is usually used as a clock drive, which is fed by the alternating current network. 45 oscillation angle corresponds to the unrest and the rotating Since the frequency of the alternating current network * is very precise even on bare armatures at the end of the effective oscillation period, such a clock works very precisely with the help of a point acting on a spike. To the operation of the clock also fixed magnet system is held.
In the event of a mains voltage failure, the invention is based on the object, in most cases, the requirement that the watch be equipped with an electronically controlled watch drive of this type for power reserve. Schalfen, which is simpler in structure than most of the times, is used as a power reserve. Difficulties in the rotary movement on the pointer mechanism are guaranteed, in such synchronous clocks with a power reserve, the possibility of synchronization with the mechanical switching from the synchronous motor to the network is provided. The electronically controlled one for gear control operation. In addition, in the Förde watch drive according to the invention, a long power reserve is characterized by a relatively large ger that the prongs of the rotatable armature spring storage required. Opposite the permanent magnet of the unrest - another possibility of the power reserve with syn- polarized and that in an end position of the chronuhrcn there is a voltage proportional to the mains frequency proportional to the voltage range of direct current through a time-passing element, excitable magnet system , that of z. ß. a tuning fork or a restlessness can be generated by a hall generator upstream of the magnet system and the synchronous motor can be controlled via a small amplifier in such a way that the respective Matoi can continue to run. All these known types of unrest entrained armature tines have the disadvantage, due to the 6s being held and the magnet repelling the unrest, poor efficiency of the motor, that either. Here, a simple synchronization function (when the clock is too small or that the control current is too small) can be performed in such a way that the battery belonging to the control current must be very large.