JPS59172965A - Flat motor - Google Patents

Abstract

PURPOSE:To reduce the size, to enhance the efficiency of a motor and to reduce the number of steps of assembling a winding by forming the entire stator winding on a silicon substrate. CONSTITUTION:A flat stator winding 15 which employs as a conductive unit a P type or N type semiconductor layer produced on a silicon substrate is integrally secured by bonding onto an insulating sheet 2. A position detector 8 detects the rotary position of a rotor 4, and the winding 15 is energized by a signal from the detector 8.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a small flat electric motor that has a very small output (several watts or less) and is flat.

Configuration of a conventional example and its problems The configuration of a conventional example is shown in FIG. In the figure, 1 is the stator winding, 2 is the insulating paper, 3 is the stator yoke, 2, 4 is the rotor magnet, 6 is the rotor yoke, 6 is the output shaft, 7 is the bearing, and 8 is the rotor yoke. 6, a ring-shaped disk which rotates in unison with the ring-shaped disk 8 and has a notch; 9, a rotor position detector (e.g., light emitting, guioto, and phototransistor) for detecting the presence or absence of the notch in the ring-shaped disk 8; 1. 0 is a drive circuit for energizing each phase winding of the stator winding 1 according to the signal from the rotor position detector 9.

□Figure 2 is a perspective view of the stator winding 1 in Figure 1.
The case of phase 4-pole winding □ is shown. 1a is the A phase winding, 1・b
1C is the B-phase winding, and 1C is the C-phase winding. Each winding is wound so that the thickness d and the winding shape are as shown in Figure 1. It is solidified using a layer etc. and each winding 1a.

1b and 1c are adhesively fixed on an insulating paper 2 in an appropriate position.

In the conventional example shown in FIG. 2, the stator coil 1a.

The man-hours for wrapping each of 1b and 1c, solidifying them, and fixing them at predetermined positions on the insulating paper 2 account for a large proportion of the total man-hours for assembling the motor, taking 3 days. Furthermore, since the actual air gap of the motor is the sum of the apparent air gap and the winding thickness d, in the conventional example, the actual air gap becomes larger depending on the winding thickness d, which poses problems in making the motor smaller and more efficient. It becomes.

Purpose of the Invention The present invention solves the above-mentioned conventional drawbacks, and by making the flat stator winding thinner and smaller, it reduces the cost of the motor assembly method, makes the motor thinner and smaller, and This is an attempt to improve efficiency.

Structure of the Invention The present invention includes a flat stator winding whose conductor is a P-layer or N-layer semiconductor layer formed on a silicon substrate, a flat magnet rotor, and a method for detecting the rotational position of the rotor. and a drive circuit that energizes the stator winding according to the signal from the rotational position detector, and can form a very thin flat stator winding. Can be simplified.

Description of examples Embodiments of the present invention will be described below with reference to FIGS. 3 to 6.

FIG. 3 is an example of a resistor produced on a silicon substrate by applying transistor manufacturing technology. 11 is an N-type silicon substrate, 12 is a P-layer semiconductor portion formed by a diffusion method, etc.;
13 is an N-layer semiconductor portion formed thereon, 14 is an silicon oxide film, and 15 is an electrode. In the same figure, A
A resistor is created between and 3. Here, by patterning A-3 into a coil shape as shown in FIG. 4, a winding can be constructed using a silicon substrate. Here, C- in Figure 3
Although it is also possible to construct a resistor using A
The resistance value can be lowered between −3 and 3.

Although FIG. 4 shows the case where there is only one winding wire, it is of course possible to form a plurality of winding wires on the same silicon substrate, and in that case, the pattern of the electrode 16 (
By appropriately selecting a material (usually produced by aluminum vapor deposition), it is possible to connect the beginning and end of each winding formed on the same silicon substrate.

Fig. 5 is a pattern diagram of the winding conductor portion when the flat stator winding is formed using a silicon substrate, and shows the winding for one phase in the case of 3-phase, 4-pole. The two phases are also formed at positions shifted by 60 degrees from each other (not shown).

In the figure, the B part of the electrode 16 can be connected to the A' part by aluminum vapor deposition, etc., and as a result, it is possible to form one phase of stator winding between A and B. be. Although the number of turns of the winding wire is illustrated as three for the sake of simplicity, it is of course possible to construct a winding wire with a larger number of turns.

FIG. 6 shows an embodiment according to the present invention. 15 is a flat stator winding using a silicon substrate, and the other components are the same as in FIG. 1. The flat solid stator windings formed on the same silicon substrate are integrally fixed onto the insulating paper 2 by adhesive or the like. In addition, there are other types of position detector 8, such as a magnetic type and an electrostatic type, but since these types are not directly related to the present invention, their explanation will be omitted.

67゛Effects of the Invention As mentioned above, in a flat section current motor, by forming all the stator windings on one silicon substrate, the number of man-hours for assembling the windings, the winding terminal processing time, and the time required for winding terminals are reduced. The accuracy of positioning can be improved. Furthermore, the thickness of the silicon substrate is at most 0.2 ~
Since it is about 0.3 ML, the motor can be made thinner, and the effective air gap is greatly reduced, so the efficiency of the motor can be increased.Therefore, the industrial value of the present invention is very large. be.

3 is a cross-sectional view of a resistor using a silicon substrate, FIG. 4 is a plan view of a silicon substrate showing an example of a coil butter, and FIG. 6 is a flat view. FIG. 6 is a plan view of a silicon substrate showing a pattern for one phase of a stator winding for a carving machine, and a sectional view together with a flat carving machine according to an embodiment of the present invention.

1... Stator winding, 4... Rotor magnet, 9... 7 bacon rotor position detector, 1o... Drive circuit.

Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure b Figure 3 Figure 5 Figure 4 // f3 Figure 5 Figure 6 0

Claims (1)

[Claims] A single-phase or multi-phase stator winding in which the N-layer part or the P-layer part of a P-N junction provided on a single silicon substrate is a conductor part, and a stator winding provided opposite to this stator winding. a rotatable flat magnet rotor; a rotational position detector that detects the rotational position of the flat magnet rotor; and a drive circuit that energizes the stator winding according to a signal from the rotational position detector. Equipped with a flat electric motor.