SU1365277A1 - Stepping micro motor for quartz watch - Google Patents

Abstract

The invention relates to electrical engineering, k discrete electrically. do for quartz watches. The goal is to improve manufacturability. The goal is achieved by the fact that the motor is provided with a sleeve coaxially with the rotor, which is installed with a tension between pole pole Ø 8 and 9, with the entire cylindrical surface 10.11 of each pole tip adjacent to the bushings or 4 so that one of its ends lies in the same plane I3 with the end of one of the pole pieces 8 and 9. The magnetic cores 3 and 4 are mounted so that their pole pieces 8 and 9 lie in the same plane, and the cylindrical surfaces of 10,11 pole tip 8, 9 throughout its over a fit with the outer surface of the sleeve, creating radial tension g therebetween, which is provided by aligning the axes of the fixing holes 5, 6 are press fit into pin 7. 1 ZP f-ly, 5 ill. fi (L

Description

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The invention relates to electrical engineering, to a discrete electric drive for a quartz watch.

The purpose of the invention is the development of engine manufacturability.

Figure 1 presents the proposed microelectric motor, a General view; figure 2 - section aa in figure 1; FIG. 3 shows the arrangement of magnetic leads to their articulation; Figures 4 and 5 illustrate the installation of the sleeve, the cover and the supports, taking into account the use of the engine in the watch movements.

The motor comprises a rotor 1 made in the form of a cylindrical permanent magnet fixed to axis 2, and magnetic conductors 3 and 4 with mounting holes 5 and 6, which serve to connect the magnetic conductors 3 and 4 overlapped with a column, pin or screw 7. Magnetic cores 3 and 4 have pole tips 8 and 9 with cylindrical surfaces 10 and II facing one another. A coil 12 of a control winding is mounted on the magnetic core 3, and preferably its end face lies in the same plane 13 with the front surface of the magnetic core 3. The pole tips 8 and 9 with their cylindrical surfaces 10 and 11 Cover the sleeve 14, the outer diameter of which is equal to the diameter because of the fact that on the magnetic core 3, the distance 1 between the centers of the circles of the hole 5 and the cylindrical surface P is less than the distance between the centers of the circles of the hole 6 and the cylindrical surface 10 m line 4, i.e. Inequality 1 s is observed (Fig. 3), column installation .; screw or pin provides the power circuit of the magnetic cores 3 and 4 around the sleeve 14, after which the deformation forces hold in the collection of all the specified parts of the engine. It is desirable to have the difference in the sizes 1 and 1 not more than half the diameter of the mounting holes 5 and 6 of the magnetic cores 3 and 4.

The sleeve 14 may be provided with a shank 15, with which the engine is coordinated on the plate of the clock mechanism, or be made as a single unit with this plate (Fig. 3). In the hole of the sleeve 14 mounted support 16 of the rotor axis ..

65277 2

The second support 17 of the same axis 2 can be installed both in the engine cover 18 and in the clock mechanism bridge 19 (Figures 4 and 5).

When mounting the support 17 in the cover 18, the engine becomes a completely autonomous unit, which facilitates its manufacture and testing. The positioning of the support 17 in the bridge 19 clock mechanism provides the best conditions for the articulation of the motor axis 2 with the clock mechanism.

The articulation of the collar 18 with the sleeve If 14 is also carried out due to the force closure due to the oppositely directed conical surfaces 20 at the end of the sleeve 14, opposite the G5 shank, and on the projection 21

20 cover (figure 4 and 5).

Between the ends of the sleeve 14 and the cover 18 is placed the latch 22, made in the form of a ring of variable width or thickness.

25 The engine operates as follows ...

When the control winding 12 is de-energized, the rotor 1 occupies the initial position, in which the permanent 30 magnet is positioned with its poles in the direction of maximum magnetic conductivity, and it does not coincide with the direction of magnetic induction due to

2g magnetizing force of control winding. When a current pulse is applied to this winding from the interaction of the magnetic fluxes of the permanent magnet and the control winding, a rotating torque occurs, which rotates the rotor by an angle close to 180 °. After the passage of a current pulse, the rotor 1 under the action of the reactive moment due to the flow of a permanent magnet and

45 by the unevenness of the magnetic conductivity of the gap between the rotor and the stator, turns up to 180. With the subsequent passage of a current pulse of opposite polarity along the same

reasons the rotor turns in

the same direction another 180,. this completes the engine cycle. the process is repeated.

Thus, due to the indicated distinctive features of the proposed engine, its manufacturing technology is simplified significantly, in particular, in one operation — the pin installation reliably connects

Phage. one

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/ sixteen

FIG. 2

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Claims (2)

Claim 1. Stepping microelectric motor for quartz watches, comprising a rotor with a cylindrical permanent magnet mounted on the axis, and a stator with two magnetic circuits fastened together at one end, and a control winding coil mounted on one of the magnetic cores, with each magnetic circuit at one end a mounting hole is made, and on the other there are poles, connector planes and cylindrical surfaces of the same diameter facing one another, between which a rotor is installed, and I have 25 pole 1365277 ⁴ with the fact that, in order to increase the manufacturability of the engine, it is equipped with a sleeve and a retainer 5, the sleeve is installed coaxially with the cylindrical surfaces of the poles, has an outer diameter equal to the inner diameter of the poles, and is fixed between them with a deformation of 10 , gadgets created by performing them with center-to-center distances satisfying the inequality where 1 ₂ is the distance between the centers of the mounting hole and the cylindrical surface of the magnetic circuit with the pole facing its surface to cr a bore hole, 1 _Oe - the same size of the second magnetic circuit, and the latch is located 20 between the poles and the sleeve. 2. The microelectric motor according to claim 1, characterized in that the coil is mounted on a magnetic circuit, facing the mounting hole with a cylindrical surface, the plane of the pole connector is perpendicular to the axis of the coil, and the end face of the coil lies in this plane. Aa Figl FIG. 5