DE1911978U - SYNCHRONO CLOCK WITH SPEED RESERVE. - Google Patents

Description

RA.F3A 128 * 27.11.6 * 1

SliSLlENS-GOHUUKERTWERKE Corporation

Erlangen, the 2 β. 11th 1964 Werner-von-Siemens-Strasse 50

ILA 63/1075 Gbm

Current number: S 44 036, 83b Gbm

Synchronous clock with power reserve.

With "" 'a synchronous motor fed by an alternating current network operated clocks, so-called synchronous clocks, have the disadvantage that they stop when the power supply is interrupted. for this disadvantage cannot be accepted for many purposes. 'For example, with time switches that operate at certain times a consumer, e.g. to switch on a night power consumer, a circuit to be triggered at completely wrong times,

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Keu / Po

PLA 63/1075

if the synchronous clock had stopped for some time as a result of temporary power disturbances and would therefore slow down. Ss synchronous watches with a so-called power reserve have therefore been created. Lie energy for operation in the event of a power failure is provided by the common constructions are stored in a spring mechanism that is wound up by the synchronous motor. Such is constructive Relatively expensive to set up because of a multi-stage reduction gear is necessary for the spring winding. Operationally there is the serious disadvantage that in a spring mechanism only a relatively small amount of energy can be stored. the Reserve power duration is therefore proportionate in such watches small, especially since the output torque of the time disc, which has to operate the switch in general, must not be too small. Recently the buyers of such watches demand larger power reserves than were previously the norm. This requirement could only can be met if a very large spring has been installed, but this makes the overall construction of the clock space-consuming and expensive.

In order to achieve a larger power reserve, it has also been suggested that that a charger for a battery is connected to the AC network that feeds the synchronous motor and one of the Battery-powered AC converter produces an alternating current with which the synchronous motor can be operated. The creation of "one such alternating current of exactly constant frequency (mostly 50 Hertz) and relatively high voltage (generally 220 V) is quite complicated and expensive.

Keu / Po

PLA 63/1075

The innovation is now based on the task of using a synchronous clock To create power reserve in which a large power reserve is contained in a relatively simple structure.

This task will be carried out according to the innovation of a synchronous clock with a power reserve solved in that the time display member automatically to one of the failure of the synchronous clock operating alternating current A direct current clock operated by a Hilis direct current source can be coupled is. A clock of this type therefore requires neither a spring mechanism nor a complicated arrangement to produce a half-current a DC power source. Nevertheless, a large power reserve is achieved. Several hundred hours can be done without any difficulty Power reserve can be achieved.

In the drawing, a Ausf ilhrungsoebeispiel the innovation is shown.

The time slice 15 of a time switch is driven by a synchronous motor 1 via the transmission consisting of the gears 2 to 14. In addition, a total of 16 designated DC clock is provided. The DC clock is fed by a battery 17. A charging device consisting of a transformer 18 and a rectifier 19 is used to charge the battery. The primary side of the transformer 18 is connected to the same AC voltage source A, B from which the synchronous motor 1 is operated. In addition, a switching magnet designated as a whole by 20 is provided. This consists of the electromagnet 21, which is also

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PLA 63/1075

at the AC voltage source A, 3. The armature 22 of the electromagnet is pivoted at.23 and is pulled by a spring 24 against the attraction of the magnet 21. The ^ end the end of the shaft 25 on which the gears 7, 8, 9 are seated is rotatably mounted in the armature 22;

The synchronous clock works as follows: If an alternating voltage is present (state shown) the electromagnet 21 attracts its armature 22 against the force of the spring 24. This will make the shaft 25 in brought such a position that the gear 7 meshes with the gear 6. There is then a drive connection between the Synchronous motor 1 and the time slice 15. In the event of an alternating voltage drop The electromagnet 21 is de-energized at the terminals A, B, the spring 24 can lift the I.iagnetanker 22 and swivels in the process the shaft 25 to the gear 7 with the output gear 26 of the DC clock 16 in Singriff komrit. Let Ss be in the illustrated embodiment assumed that the driven gear 26 of the DC clock 16 runs continuously, so that the clock is undisturbed after the coupling continues to operate as long as the battery 17 can provide power. If voltage is present again at terminals A, B, then electromagnet 21 attracts its armature and switches to synchronous operation. At the same time, the battery 17 is recharged.

Contrary to the illustrated embodiment, instead of one continuously charged accumulator, an exchangeable direct current source, e.g. a dry cell battery. "In this case it is" advisable not to let the DC clock run idle to leave, but only switch it on when the Eeserve

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PLA 63/1075

should take over operation. This activation would then also go through the movement of the solenoid 20 can be triggered. Self-evident " In accumulator operation, constant running of the synchronism is borne

• Electricity clock not required. However, it has the advantage that sticking of the movement due to the gumming of the lubricating oil etc. is not possible

The coupling can have a wide variety of designs. Besides the coupling shown in the drawing by pivoting an axis, a coupling is also conceivable, for example, in which a non-rotatable but longitudinally displaceable coupling sleeve, depending on the operating mode (synchronous operation or direct current operation ), is shifted in such a way that it is either positively locked engages in a gear wheel which is freely rotatable on the shaft and which is in drive connection with the synchronous motor, or engages in a gear wheel which is in drive connection with the DC clock.

The clutch can be arranged at the most diverse points of the transmission being. The shaft driving the time disk 1_5 can therefore also be recoupled directly. The advantage of a coupling within of the -Ge.tr'iebes has the advantage that that of the tooth pitch resulting coupling failure is not as great as on the slowly running time slice wave. Of course, the downforce must then the synchronous clock run so fast that the right ratio is given to the coupled gear stage.

The time display member can, at the same time or instead, -also be time-dependent switching element.

I _Iigur · '

II Protection, claims

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Claims (9)

New protection claims 1. Synchronous clock with power reserve, which in the event of failure of the synchronous motor feeding alternating current is automatically coupled to the time display member, characterized in that as Power reserve one operated by an auxiliary direct current source (17) DC clock (16) is provided. 2. Synchronous clock according to claim 1, characterized in that the direct current source is a replaceable element, e.g. a dry battery, is. 3. Synchronous clock according to claim 1 and 2, characterized in that the direct current source is an accumulator (17). 4. Synehronuhr according to claim 3 »characterized in that the Accumulator (17) a transformer (18) and rectifier (19) existing charging device is assigned, which is fed from the same network. 5. Synehron clock according to claim 1 to 4, characterized in that for coupling one on a pivotable, with the time display member (15) standing in drive connection shaft (25) seated gear (7) is provided which, depending on the location of the Shaft (25) either in a tooth which is in drive connection with the synchronous motor (1) or in a tooth which is in drive connection with the DC clock wheel (6 or 26) engages. Hee / Br 29.1.65 PLA 63/1075 6. Synchronous clock after. Claim. 1 to 4, characterized in that the coupling consists of a shaft which is displaceable along a shaft which is in drive connection with the time display element (15) but is opposite the shaft is non-rotatable coupling sleeve, which ever after. Position either in a drive connection with the synchronous motor (1) or in a drive connection with the DC drive (16), freely rotatable gear engages positively on the shaft. 7. Synchronous clock according to claim 1 to 6, characterized in that the time display member (15) driving shaft is designed as a coupling member. 8. Synchronunr according to claim 1 to 6, characterized in that an intermediate stage (6) from the synchronous motor (1) to the time indicator member (15) leading gear (gears 2 to I4) can be coupled is. 9. synchronous clock according to claim Ibis 8, characterized in that a sliding rotor motor for driving, for switching over from synchronous operation to DC operation and, if necessary, to switch on the DC clock (16) is provided. HiOVtH: Kss ϋηΙ ^^ - Ρ ^ Α ^ ΐϊϊΗ ^ δΑ ^ κ ^ is dia jatött ^ rsW ^ s: o toSc »vot der Wen- fassuaa £ ° r .ETE ₅ TJKiCh sir -.--, - · -" - ^ "- ^ ran Eb. Eis reÄSSÄs Bssüssiena der Äbwsichan _S «ssTthi« * pn ^ ^^ 4 ^ te ώ a »mäföatean ifitesssss &StoK> * & - ~ _Λ - * a wrfsn. Anf anteg "βέαι tfaxea " - '= "λ α ds" a "to> Ρ ^ επ""dfetot. Oe * ri « PoteScsft C-Äa Hee / Br