DE1915468A1 - Electric motor, especially for driving time-keeping devices - Google Patents

Description

Lisentia Patent-Verwaltungs-G.m.b.H. 6 ffrankfurt / Hairu Theodor ~ Stern-Kai 1

6V388

Kollrodt / rr March 6, 1969

"Electric motor, especially for driving time-keeping devices"

The invention relates to an electric motor ^ in particular for Drive of time-keeping devices, the rotor of which is connected to a mechanical vibration system for speed control is, which generates drive impulses for the runner in the cycle of its mechanical vibrations via an electrical drive system » vrobei the mechanical oscillation system consists of at least one resilient oscillating arm arranged on the runner, on whose free, oscillatable one End bearing permanent magnets act periodically when the rotor rotates.

A driving device of this type has recently been proposed. With this device there is a throw-off Lever provided, which is rotatably mounted * · and by-h engagement would take a toothed end on a rotor gear Runner wheels can set in rotation »This one or one Another starting device is required »because the motors of the The type specified above with simple centers are not self-starting.

009840/0988

BAD OFUGfNAL

Even with AawurfvorricM-img "the electric motor needs a relatively .long since the · formation of the orbit of the oscillation systems characteristic for its synchronous vibration systems ¹ must be excited.

The aim of the present invention is to make the electric motor so au improve that when using any throwing device a quick Er = after the first throw range of synchronous operation of the motor is guaranteed in any case.

According to the invention this object is achieved in that the self-contained path of the revolving, oscillating Permanent magnets of fixed, in the oscillation " flat, magnetic ciisata masses flanked with pronounced poles is »The poles of the magnetic additional masses force the end of the swing arm almost into that even before the engine reaches operating speed for this typical orbit; so. that this immediately after reached and maintained when the start-up impulse subsided will"

According to advantageous embodiments of the invention, it is provided that the poles of the additional masses at vibration maxima Corresponding track sections are arranged and that the accessory cups and the rotating permanent magnet are partially embrace each other. With these measures, a sufficiently large influence on the construction of the tree during ramp-up is achieved with very little material expenditure *

QQ9840 / Q968

BATH ORIGINAL

64/388 "~ 5 -

Other ¥ eitei ^s bildungsnierkma) e of the invention are "that are assigned only to aa" h inner or outwardly directed Maxiisa ZusatsEassen and that of ferro · = magnetic Poxblechen are shown or of permanent magnets "Bsi see the use of ferromagnetic ti PoIbI e -:? Hen carry this advantageous entry at least partially electrically conductive Eurzschlusswindungen »

An exemplary embodiment of the invention is explained in more detail with the aid of a drawing «
Fig. 1 shows a plan view and

2 shows a section through the rotor of an electric motor according to the invention »

The electric motor has a bearing between not shown plates or boards rotor shaft 1 carrying a rotor 2, are fixed to the periphery of which two oscillating arms 3 "The swing arms J consist of flat spring steel and is at 4 ', optionally adjustable _t connected to the rotor 2 . At their free oscillating ends, the oscillating arms 3 carry misshapen ferromagnetic brackets 5- on the legs of which permanent magnets 6 are attached, which form an air gap in pairs. Regulating weights 7 are also provided at the ends of the swing arms 3! which allow a change in the natural frequency of the oscillating arms 3.

In the air gaps set by the permanent magnets 6 When the rotor 2 rotates, coils 8 and 9 which are fixedly provided in the electric motor are immersed. These coils 8 and 9 are preferably designed as flat air coils. the Coils 8 and 9 are connected in a manner not shown to a transistor and a current source so that when a voltage is induced in one coil, the transistor

Q Q 9 8 4 O / O 9 6 8

ORIGINAL BATHROOM CA3

allows a powerful current to flow through the second coil. Thereby forms; in the operation of the electric motor for the The bracket 5 and permanent magnets attached to the arm 3 6 shows a characteristic movement curve, which as a result the fixedly arranged coils 8 and 9 is closed in itself, because the permanent magnets 6 are always drawn at the same point either to the coil 8 or to the coil 9.

A one-part or multi-part ferromagnetic additional mass 10 is provided around the axis of the rotor 2. These Additional mass ^ O has pronounced poles 11, each are assigned to the track sections coming closest to the rotor axis. To influence one of the ferromagnetic Additional mass 10 penetrating magnetic field short-circuit windings are provided, via which a possibly necessary adjustment is made. The poles 11 push the vibratory ends of the swing arms 3 long before the operating speed of the electric motor is reached, so that the desired movement curve also results immediately when the electric motor is started c

In addition to one or more additional masses 10, as indicated by dashed lines, further masses 12 can of course also be attached to the be provided furthest away from the rotor axis track sections. Of course, you can also instead from f err omagne ti see additional masses permanent magnetic additional masses with appropriate polarity are used.

The invention is particularly advantageous because it is a reliable one with little material and manufacturing expense

009840/0968

BAD ORfGINAL

64/388

Continuation of the electric motor after starting ensures. In addition, it is no longer necessary to maintain a specific speed when starting.

5 pages description

8 claims

1 sheet of drawing with 2 fig.

009840/0968

Claims (1)

Licentia Patent -Verwaltungs-G. nu b * H. 6 Frankfurt / Main »Theodor-Stern-Kai 1 6V388 Kollrodt / rr 6 «March 1969 Patent claims: (A. η electric motor, particularly for driving time retaining devices connected to the speed control with a mechanical vibration system whose rotor is generated _s that in the clocks of its mechanical oscillations are transmitted by an electric drive system driving pulses for the runner, wherein the mechanical oscillation s syst em from at least one of the rotor is arranged _t spring-elastic swing arm, on whose free, oscillatable, a permanent magnet-bearing end bsim the rotation of the rotor periodically act drive impulses Vibration plane extending, additional magnetic masses (10, 12) with pronounced poles (11) is flanked. 2.) Electric motor according to claim 1, characterized in < that the poles i11) of the additional masses (10, 12) at vibration maxima corresponding path from sections are arranged in the direction of the maxima. 0098AO / 0968 64/388 5c - Electric motor after spoke 1 and 2 _S characterized, that the Susatzmassen (10, 12) and the rotating permanent magnet (6) partially enclose each other., 4.1 Electric motor according to claim i MS 3, characterized in that _t that only to inwardly directed maxima additional masses T ¹ O) are provided. 5 ·> Electric motor according to claims ¹ to 5? characterized »that additional masses 1 ^ 2} are only provided at outwardly directed maxima» 6 «. * Electric motor according to one or more of claims 1 up to 5 »marked * that as additional masses '-'Q, <2) ferromagnetic poles serve " 7 «) electric motor according to claim 6, characterized * that the ferromagnetic pole sheets are at least partially electrically conductive short-circuit windings wear. 8 »i electric motor according to one or more of claims 1 up to 5 »marked by the fact that as additional masses Serve permanent magnets. 0Ö98A0 / 0968 BATH ORIGINAL ι S. Blank page