JPS58215958A - Winding method for rotor coil of coreless motor - Google Patents

Abstract

PURPOSE:To simplify the winding work of a rotor coil for a coreless motor by applying internal pressure to a cylindrical bag to expand the middle part in a spherical shape, winding a coil on the outer surface of the spherical shape to form a spherical winding unit and then forming it in a cylindrical shape. CONSTITUTION:A cylindrical bag 9 is mounted on a winding core, and air or liquid is supplied under pressure into the bag 9. The middle part of the cylindrical wall of the bag 9 is expanded substantially in the spherical shape, and maintained in the state. Subsequently, a coil W is wound on the outer surface of the spherical shape to form a spherical winding unit C. Then, the internal pressure of the bag 9 is evacuated, the winding unit C of correcting tubular tube is pressed from outside to form it in a cylindrical shape. According to said method, the winding work can be largely simplified and increased in efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method of winding a rotor winding of a coreless motor.

Traditionally, rotor winding methods for coreless motors include using a special winding machine to align the wires and winding them into a cylindrical shape, or winding them into a pincushion shape and then winding one opening in several steps. There is a method of expanding the coil to make it into a cylinder, and a method of assembling a single coil into a cylinder, but both methods involve a lot of man-hours and time, and the process is several times that of core-type winding. It is time consuming and has a high rate of wire breakage defects.

In other words, the method of winding the wires in an aligned manner using the special winding machine described above has a limit on the number of windings, and the method of winding the wires in a spool shape allows the wires to be wound freely, but it is difficult to wind the wires from the spool into a tube. Forming requires several steps, and the tensile deformation of the wire during winding is large, making it easy to break the wire.Furthermore, in the method of assembling a single coil, winding is simple, but the shape is It is angular, cannot be wound at high speed, is difficult to maintain in its shape, and is difficult to assemble.There are also methods using tape wires, but there are various difficulties such as less selectivity of wire material and higher costs. There are restrictions.

This invention was made in order to solve the above problems, and provides a winding method that can greatly contribute to increasing the speed of rotor winding of a coreless motor, simplifying the number of processing steps, and reducing the defective rate of wire breakage. It is intended to provide.

The method of winding a rotor winding for a coreless motor according to the present invention involves applying internal pressure to a cylindrical bag made of a soft elastically expandable material, and expanding the midway portion of the bag into a Y-spherical shape. The spherical part is held in a bulged state, and the outer surface of the spherical part is wound to form a spherical winding body, and then the spherical winding body is formed into a cylindrical shape. It is something that you have.

Hereinafter, the present invention will be explained in detail based on the drawings showing embodiments thereof.

Figure 1 shows the main parts of the winding device; (1) is the fuselage;
(2) is a wire rod feed flyer, (3) is a rocking body, (4
) is the swinging shaft, (5) is the arm bracket for the winding tag, (6) is the stepping motor for driving it, (7) is the tap holding arm, and (8) is arranged perpendicular to the floor of the aircraft. The flyer (2) is a rotatable winding core provided, and the rotational axis of the flyer (2) is positioned at an angle (b) with the axis of the winding core (8).

A bag (9) shown in FIGS. 3 and 4 is fitted onto the winding core (8). This bag body (9) is made of a rubber material into a cylindrical shape, the upper tube mouth is closed, the lower tube mouth is open, and the closed end surface has a line hooking protrusion a.
[There is aggregate α])0 clay embedded in the cylinder wall on the closed end side and the open end side, respectively.

Next, a method of winding a rotor winding of a coreless motor using the winding device will be described.

First, as shown in Fig. 3, the cylindrical bag (9) is fitted onto the winding core (8), fixed with the base (end) and bag nut α, and then attached to the core (8). Air or liquid is supplied under pressure into the bag (9) through the vertical hole (8a) and horizontal hole (8b), which are openings. Due to this pressurizing action, the middle portion of the cylindrical wall portion of the bag (9) where the aggregate (11) 04 is not embedded is bulged into a Y-spherical shape and maintained in that state.

After that, the starting end of the winding (5) of the flyer (2) is tied to the protrusion Ql on the upper end surface of the bag (9), and the flyer (2)
By the rotation operation, the bag body (9) is wound from the boundary between the upper non-bulging cylindrical part and the spherical part along the outer periphery of the loading surface passing through the center of the spherical part, and at the same time, the bag body (9) is wound through the core body (8). bag body (9
) is rotated at the angular velocity for each winding pitch, the winding a (
5) is wound in the form of a spool, as shown in FIG. 2, and the winding ends with one rotation of the bag (9).

In the middle of the winding process, in order to form a tap to be connected to the commutator, the swinging body (3) is swung around the spindle (4) to a position where it will not be caught by the unwinding winding (b). The existing hook is hooked by protruding the arm fitting (5) onto the running surface of the winding (B), then rotated several times by the driving of the stepping motor (6), and stopped at the dotted line position in Fig. 2, and then The holding arm (7) is rotated to a position where it is pressed against the tap wire part ■ wrapped around the tip of the arm metal fitting (5), and then the hook releases the arm metal fitting (5) from the tap line part ■. Return the holding arm (7) to its original position to complete the tap forming process, then operate the flyer (2) again to start winding. Repeat the above operation for the number of poles of the commutator to complete the winding. Complete the line process.

The means for expanding the middle part of the bag (9) into a spherical shape by internal pressure is not limited to the above example, but as shown in FIG.
Fit the short pipe Ql19 (to) into the upper and lower parts of the bag body (9),
The wire hook may be formed integrally with a projection (II) on a part of the upper short pipe M.

After winding the outer surface of the spherical part of the bag body (9) as described above, when the core body (8) is pulled out from the bag body (9), the first and sixth
As shown in the figure, when the bag body (9) is returned to a cylindrical shape and the internal pressure is further reduced, it becomes as shown by the dotted line, and the wire ring 0 formed on the outer surface of the spherical part can be easily removed.

Next, in order to use the spherical wire 0 wound around the outer surface of the spherical portion of the bag body (9) as a rotor winding for a coreless motor, it must be formed into a cylindrical shape. 7 to 9 show a method of forming the spherical wire ring 0 into a cylindrical shape. a'7
) is a straightening tubular tube, and the inner pressure of the bag body (9) is released, and the tube aη is used to press the wire ring (q) from the outside to form it into a cylindrical shape.In that case, the spherical wire ring (q A ring-shaped protrusion (9a) is attached to the outer surface of the bag (9) where the end of the bag (9) contacts.
When using a material provided with , molding becomes even easier. Further, by using a winding wire having a resin outer covering on the surface of the insulated wire and applying electricity or steam heating, the wire ring can be fixed at the same time as forming.

Figure 10 shows the method for forming the spherical wire ring (Q) removed from the bag body (9) into a cylindrical shape. (G) is a commutator, QeJ is a disk connected to the commutator, (E) is The tension bar, Qυ, is a retaining bottle provided on the circumferential surface of the tension bar so that it can freely protrude and retract.A disk (171) is glued and fixed to the upper end of the wire ring 0, and the tension rod ( In this method, a spherical wire ring is formed into a cylindrical shape by inserting the wire (e), taking out the bottle Q◇, sticking it into the wire ring 0, and engaging it, and applying a tensile force to the tension rod.

Incidentally, if a large number of linear grooves are provided on the outer circumferential surface of the bag (9), winding will be further facilitated. This is especially effective when the wire diameter is large.

When the bag (9) is bulged, it is not necessarily necessary to bulge it into a spherical shape, and it may be trochoidal (barrel-shaped) although the winding conditions are slightly worse.

Furthermore, if the motor shape is spherical (the stator is also spherical), the spherically wound wire ring can be used as is without being formed into a cylindrical shape.

Such a spherical motor is preferable for driving a fan or a gyro, and especially if it is used as an outer rotor, it can be directly used as a gyro.

Further, each member of the winding device can be automatically operated in a predetermined order by using a computer.

Thus, according to the method for winding the rotor winding of the coreless motor described above, numerous effects described below can be obtained.

(1) Since the bulging spherical part of the bag is used as the winding part, the shape of one turn of the winding is a perfect circle, and the tension is constant and winding can be done easily and at high speed.

(2) Since the bag body is made of a soft elastic material, the surface that comes into contact with the winding wire will not slip.The winding tension acts perpendicularly to the bag surface at any position, so the winding work is easy. Easy and sure.

(3) Since the line is drawn across the boundary between the spherical part and the cylindrical part of the bag, line slippage is less likely to occur, and since the lines overlap at the boundary, the spherical coil becomes stronger.

(4) Since the bag is made of a soft elastic material, it is easy to remove.

(5) The shape of the winding can be safely changed by adjusting the pressure difference between the inside and outside of the bag, inserting the core rod, etc.

(6) When forming a spherical wire into a cylindrical shape, the arc-shaped winding is simply stretched into a straight line, so the forming process is extremely rational, there is little wire breakage, and the defect rate is low. .

(Force: The effective part of the entire winding is about 1/2, which is comparable to a rectangular winding.

As described above, according to the present invention, internal pressure is applied to a cylindrical bag made of a soft and elastically expandable material, and the midway portion of the bag is expanded into a Y-spherical shape. Winding is applied to the outer surface of the spherical part that maintains the bulged state to form a spherical winding body.The spherical winding body is then formed into a cylindrical shape, so the rotor winding for a coreless motor can be used. Its effects are extremely significant, such as greatly simplifying and streamlining the winding work and producing stable winding with a low rate of defective wire breaks.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the main components of a winding device that implements the method of this invention, Fig. 2 is a diagram showing the relative arrangement of each member during the winding operation, and Fig. 3 shows the expanded bag body and its structure. A cross-sectional view of the supporting part,
FIG. 4 is a cross-sectional view of the bag body, FIG. FIG. 10 is a partial cross-sectional view of a bag showing another molding example, and FIG. 10 is a perspective view of a wire ring showing another molding example. (1)... Aircraft, (2)... Flyer, (3)...
- Rocking body, (4)... Support shaft, (5)... Winding tap hook is arm bracket, (6)... Stepping motor, (
7)...Tap holding arm, (8)...Winding core, (
9)...Bag body, Ql...Line hook is a protrusion, 00@.
... Aggregate, 03... Cap, (I4... Bag nut, (
G)...Winding, 0Q(G)...Short tube, 0...Spherical coil, (+7)...Tubular tube for straightening, (To)...
...Commitator, wire...disk, wire...tension rod,
Qυ...bin. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 91 Figure 10

Claims (1)

[Claims] By applying internal pressure to a cylindrical bag made of a soft and elastically expandable material, the midway portion of the bag expands into an approximately spherical shape, and the outer surface of the spherical portion is maintained in this expanded state. 1. A method of winding a rotor winding for a coreless motor, which comprises winding a spherical winding body to form a spherical winding body, and then forming the spherical winding body into a cylindrical shape.