DE1438316A1 - Synchronous micro motor - Google Patents

Description

Lioentia F * tent-? Administration- <l »bh 1438316 Frankfurt a * Hain, Theodor-Stern-Kai 1

25 July 1968 I «42 558 -! PB 31 666

Small chronograph engine

Sill's invention relates to a synchronous micro-motor, whose magnetic core carries the rotor bearings and the stator plates · The stator plates are provided on the side of the core Front surfaces arranged in the center and by Q & riveting held.

If rotors, as they are the basis of the invention, are to be used to drive any devices, e.g. clocks, then a gear must first be connected to their shaft "For this" purpose, a centering collar with old grooves was previously placed on the shaft which the transmission was attached. This operation undpie production of the centering collar mean for such Rotors a considerable, cost-generating effort.

Reiis Öntejleöen i * t 7 Ii a

8 0 9 8 0 6/0 3 A 1

Motors have already become known, in which the Magnetic core also supports the barrel bearings and the uprights is. Both bearings are arranged inside the magnetic core and do not protrude beyond this, so that they also not as a centering collar for any connecting country Device can serve.

Another well-known rotor with a magnetic core is like this constructed that the magnetic core is only carrier of a single bearing of the motor shaft, while the other bearing in a separate circuit board is attached · The two bearings this well-known engine wise «was out of profile of the engine extensions, but these extensions are by no means suitable as a center association; rather, they serve to the stop or to limit the bearings on the motor, because these bearings are screwed into the magnetic core or into the circuit board will*

In another known motor, although a bearing is also provided, which protrudes over the profile of the motor in the axial direction and has a radial expansion, but is this extended camp is by no means intended to be used as a centering flange To serve for parts driven by the engine »For the pail that a part to be driven is attached to the engine» should, namely, if that is exactly what is contrary to this camp

put the end of the engine intended for this because the shaft of the engine only on this side is long enough so that only on this side the possibility of sun connection of a device is given.

The object of the invention is to reduce the production costs for engines, how they are based on the invention to reduce. According to the invention, this object is achieved in that a bearing over the profile of the motor in axial direction has outstanding radial expansion, which is intended as a centering collar for a cable driven by the motor is · The already existing bearing body takes over both in axial and radial direction through expansion essentially the function of a centering collar. Sin separate The centering collar is thus omitted · This results in material and labor savings and thus the desired cost reduction « The radial expansion is necessary in addition to the axial, because the diameter of the centering collar must correspond to the hole in the gear plate and the hole to the largest gear in the gear must be adapted. In addition, the centering becomes easier and more accurate the larger the diameter of the centering collar is.

Sin embodiment of the invention is shown in the drawing

shown.

809806/0341

- 4 - P 14 3β 516.5

Hit 1 and 2 are the · stator plate «of a motor · like him Invention luemnde is called. For the sake of simplicity were only the XOr the invention essential details The motor is shown, since the invention can be used in principle for any synchronous small motor. and the remaining ropes are therefore assumed to be known can. The two stator plates 1 and 2 of the rotor are on dam magnet core 3 held, and swar by riveting, wherein they rest on the end faces 4 and 5 of the magnetic core. The bobbin of the Brregerepule (not shown) is 6 years old and is located on both the stand braces as well as aa magnetic core on “The LKuf shaft 7 carries the rotor 8 of the motor, which is designed here as an external rotor and is managed in camps 9 and 10 «Bas camp 9 is included completely within the bore 11 of the magnetic core, while the bearing 10 also protrudes into the bore 11, however, according to the invention, it has an extension, which protrudes on the one hand in the axial direction over the profile of the motor and on the other hand still in the radial direction runs · With the expansion of camp 10, soalt will be a Kentrierbund 12 created, on which de «engine su operated devices, such as a lower gearbox, marriage can be, and it was so "that the oerate are centered from the outset with respect to the driving motor shaft 7 by the centering collar.

Claims

809806/0 3-4 1, s?

Claims (1)

* »* Ent-Yerwalt» ng »-eebH 143 8316 lr * nkfixrt m Hain, Iheodor-atern-Iai 1 Doring / kt «r j? 14 3 »316.5 25. Jell 1968; I »42 558 ■ - PB 31 666 1.) SynehronkleinstBotor, whose magnetic core is the rotor bearing and the stand plate carries, with the stand plates on one side Centered on the TOP seen forehead axles and are provided by Uanletiing, are thus characterized . . “Calculate that a camp (10) has one over the profile of dee Hotors Radial expansion outstanding in axial direction has, which as a centering collar (12) for one of Motor driven file is provided. 2. Motor according to Anepruch 1, dadurchgekennseichnet that he, Further bearings (10) designed as sintered bearings 3 * Mptor according to Anepnich 1 to 2, thereby marked, both * Stinderble <5he (1, 2) laterally on circular rings 8 0 9 8 0 6/03-W oftfem ^ L IKS? 2CTED P 1 * 38 316 x 5 Motor according to one of claims 1 to 3 »characterized in that it is' identified, that the core (3) and the stator plates (1, 2) su an »ayametrisehen Wagnetsyatem are vexreinigt · ORIGINAL