JPH02123933A - Motor - Google Patents

Abstract

PURPOSE:To facilitate winding work without the restriction of space by assembling divided members integrally for complete constitution into which a stator is plurally divided in the radial direction. CONSTITUTION:Two divided members 1A and 1B are formed by laminating half-disc-shaped divided core forming plates 10A and 10B having three projections 3. Each pole projection 3 of each divided member 1A and 1B is equipped with annular coils 2. A rotor 8 is assembled in the state where one of the divided member 1A thus equipped with the coil 2 is positioned. The other divided member 1B is also assembled. By welding these members they are integrally coupled. Consequently, since the stator 1 can be equipped with coils 2 in the state of divided arc-shaped divided members 1A and 1B by constituting a stator 1 by divided members 1A and 1B, pole projections 3 can be easily equipped with large-sized annular coils without the restriction of space in the stator 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to, for example, a variable reluctance motor, and more particularly to the structure of a stator.

[Prior Art] Conventionally, a variable reluctance motor has a rotor that is rotatably supported and has a plurality of magnetic pole protrusions on its outer periphery, and a plurality of coils that are arranged to surround this rotor and have coils wound around its inner periphery. and a cylindrical stator having magnetic pole protrusions. The configuration for attaching the coil to the magnetic pole protrusion includes a method in which a ring-shaped coil made of a bundle of conductive wires is attached to the magnetic pole protrusion, or a method in which the conductive wire is sequentially wound around the magnetic pole protrusion using a winding machine or manually.

[Problems to be Solved by the Invention] However, in the former configuration in which an annular coil is installed, when manufacturing a small and elongated motor as shown in FIG. If the inner diameter of the stator S is set to 05 or more, it will not fit into the space inside the stator S, and therefore the coil C will become a magnetic pole protrusion. It is not installed on the Therefore, it is necessary to set the height Qo of the coil C to be equal to or less than the inner diameter Q5 of the stator, but this will reduce the number of windings and reduce the output of the motor itself. Therefore, this has been a constraint in manufacturing a small and powerful motor. On the other hand, with the latter method of winding the conductor directly around the magnetic pole protrusions, in the case of an elongated motor,
Since the inner diameter of the stator is small, a special winding machine is required, and when the winding is done manually, it is not only inefficient but also requires great skill.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the conventional techniques, and to provide a motor that is easy to manufacture and that simplifies winding work.

[Means for Solving the Problems] A motor according to the present invention made to solve the above problems includes a stator in which coils are concentratedly wound around a plurality of magnetic pole protrusions provided on the inner periphery, and a plurality of coils on the outer periphery. In a motor equipped with a rotor provided with magnetic pole protrusions, the stator is constructed by integrally arranging a plurality of divided members divided in the radial direction.

[Operation] Since the stator of the motor of the present invention is divided into a plurality of parts in the radial direction, a coil is attached to the magnetic pole protrusion of each divided member, and these divided members are tied together to form a stator. . Therefore, even a large annular coil can be easily attached to the magnetic pole protrusion without being restricted by the size of the space within the stator. Similarly, when winding conductive wires around the magnetic pole protrusions of the divided stator by hand or using a winding machine, the upper part of the magnetic pole protrusions is open, making it easy to wind the wire without being restricted by space. Can be installed using a regular winding machine.

[Example 1] An example of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded side view of the variable reluctance motor, and FIG. 2 is a later side view with dovetailing. In the figure, reference numeral 1 denotes a cylindrical stator made of a laminated iron core, and on the inner periphery of this stator 1 is a ring-shaped coil 2 made of bundled conductive wires.
Six magnetic pole protrusions 3 (only three of which are shown in FIG. 1) are provided. On the other hand, a rotor 8 consisting of an output shaft 6 and a rotor core 7 supported by the output shaft 6 is supported in a cylindrical space within the stator 1 . The rotor core 7 is constructed by laminating core forming plates 10 having four magnetic pole protrusions 9 on the outer periphery. The stator 1 is composed of divided members IA and 1B that are divided into two in the radial direction by the groove between the magnetic pole protrusions 3, and these are integrally wedged. Steps such as assembly of the stator 1 are performed by the following steps. That is, first, two divided members IA, IB are formed by stacking half-disc-shaped divided core forming plates 10A, 10B having three magnetic pole protrusions 3, and each magnetic pole protrusion 3 of each divided member IA, IB is stacked. , attach the annular coil 2 (see Fig. 3). Next, the rotor 8 is assembled with one of the divided members IA having the coil 2 mounted thereon positioned, and the other divided member IB is further sewn together and welded together to integrally connect them.

Therefore, in this embodiment, the stator 1 is divided into divided members IA, I
By configuring from B, the coil 2 can be installed in the divided arc-shaped divided members IA and IB, so even a large annular coil can be installed without being restricted by the space inside the stator 1. It can be easily attached to the magnetic pole protrusion 3.

In this way, not only is the winding work easier, but since the upper parts of the divided members IA and IB are open, the height of the coil 2 is not restricted for installation, and therefore the stator 1 with the deep groove structure If this is done and a large coil corresponding to this is installed, an elongated, compact, low-inertia, high-performance motor can be realized. Furthermore, even if the coil is attached by winding the conductive wire around the magnetic pole protrusion 3 of the stator 1 using a winding machine or manually, a special winding machine or manual skill is not required.

The driving principle of this motor is the same as that of a conventional variable reluctance motor. For example, when the magnetic pole protrusion 9a of the rotor 8 approaches the magnetic pole protrusion 3a of the stator 1 shown in FIG. Rotational torque is generated by passing a current corresponding to the change in the coil 2a.
, 1B has no effect on the magnetic flux generated from the magnetic pole projections 3. Therefore, the torque characteristics and the like of the motor remain as they were before.

Note that joining may be facilitated by forming a recess on one end face of the divided members IA and IB of the stator 1 and a protrusion on the other end face.

In addition, in the above embodiment, a variable reluctance motor with a divided stator was explained, but the same effect can be obtained with a stepping motor or a DC motor as long as the coils are concentratedly wound around the magnetic pole protrusions of the stator. play.

[Effects of the Invention] As explained above, according to the motor of the present invention, since the stator is constructed by joining the divided members divided into a plurality of parts in the radial direction, it is easy to attach the coils. Furthermore, since the size of the coil is not restricted by the space within the stator, a small, high-output motor can be obtained by mounting a large coil in an elongated shape.

[Brief explanation of drawings]

Fig. 1 is an exploded side view of a variable reluctance motor that is an embodiment of the present invention, Fig. 2 is a side view of the same motor with a slotted side, and Fig. 3 is a side view showing a coil attached to a divided member. FIG. 4 is an exploded perspective view of a conventional variable reluctance motor.

Claims (1)

[Scope of Claims] A motor comprising: a stator in which a coil is wound in a concentrated manner around a plurality of magnetic pole protrusions provided on an inner periphery; and a rotor provided with a plurality of magnetic pole protrusions on an outer periphery. A motor characterized in that it is constructed by integrally assembling a plurality of divided members divided in the radial direction.