JPH055807Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to the core structure of a rotary or linear motor, and is particularly suitable for thin small motors in which concentrated windings are applied to the salient pole core.

[Prior Art] Conventionally, as a core shape for a small motor in which concentrated winding is applied to a salient pole core, there have been many core shapes in which a yoke 1 and a salient pole 8 are integrally punched out of an electromagnetic steel plate, as shown in Fig. 4 a and b. Generally, the coils 3 are stacked in the axial direction, and the coil 3 is wound around the salient pole 8 to form a stator.

In addition, in the case of a linear motor, as shown in Fig. 5a and b, a laminated E-shaped core 7 is punched out in one piece.
Generally, the coil 3 is wound around the salient pole 8 of the central leg of the movable element.

[Problems to be Solved by the Invention] However, since the coil end 9 protrudes outside the laminated core of the yoke, the axial dimension of the stator becomes long, making it difficult to downsize the stator. In view of the above points, the present invention proposes a core shape that can shorten the axial dimension of the motor.

[Means for solving the problem] In a motor core in which wires are wound around a laminated core yoke and a laminated core having salient poles, the lamination direction of the core yoke is made almost orthogonal to the lamination direction, and a wire is attached to both ends from the yoke end face. In order to minimize the protruding part, the laminated core has a recess for storing the coil end, and is integrated by gluing or caulking to form a single salient pole core.

A single electromagnetic pole consisting of a coil concentratedly wound around this salient pole core, at a predetermined electrical angle, for the number of phases,
Arranged on the iron core yoke to form the armature.

[Function] An electromagnetic core is formed in the coil end, which was conventionally a space, and most of the heat generated by the coil end is radiated through the core with good heat conduction through the recess.

[Embodiment] An embodiment of the present invention will be described based on FIGS. 1a and 2b and FIG. 2, taking a rotating type as an example.

A roughly rectangular silicon steel plate segment is provided with recesses 4 for housing the coil 3 at both ends thereof, and the outer surface 10 forms a curved surface that matches the inner diameter of the laminated core yoke 1 and the inner surface 11 matches the gap diameter, in a direction parallel to the rotation axis. are laminated and fixed by gluing, caulking or welding to form a single salient pole core 2, and a coil 3 is attached to this salient pole core 2.
After concentrated winding, the coil end 9 is pressed and corrected from both sides in the axial direction so that the portion protruding from the end face of the yoke 1 is reduced, thereby forming the electromagnetic pole 5.

This electromagnetic pole 5 is arranged on the inner diameter side of the laminated core yoke 1 punched into a cylindrical shape with a predetermined number of phases and a predetermined electrical angle pitch so that the lamination direction of the yoke 1 is almost orthogonal to the lamination direction, and is bonded etc. It is fixed and used as a stator.

As another embodiment, one phase of a linear motor is shown in FIGS. 3a and 3b.

Kubomi 4 that accommodates the coil end 9 at both ends.
Laminated rectangular silicon steel plate segments with
After fixing by gluing, caulking or welding to form a single salient pole core 2, and winding the coil 3 around this salient pole core 2 in a concentrated manner, the coil ends 9 are connected to C from both sides in the axial direction.
The portion protruding from the end face of the shaped core 6 is pressed and corrected to make it smaller, and then molded to form the single electromagnetic pole 5.

This electromagnetic pole 5 is fixed to the center of the laminated C-shaped core 6 so as to be substantially orthogonal to the lamination direction of the iron core to form a single-pole mover, and arranged at a predetermined electrical angle pitch for the number of phases to form a linear・Constitutes the movable element of the motor.

The movable elements may be arranged so that their moving directions are orthogonal as shown in FIG. 3, or the movable elements for the number of phases may be arranged in parallel or in series.

Moreover, the movable element of the present invention may be a stator.

Furthermore, resin may be filled between the coil 3 and the hollow 4 to improve heat conduction.

Although the present invention has been explained using rotary motors and linear motors as examples, it is obvious that it can also be applied to planar motors, spherical motors, etc., so the explanation will be omitted.

[Effect of idea]

Since the laminated core having a recess for storage in the coil end is used as the salient pole, the overall length of the motor is shortened by the amount of storage in the recess, allowing the motor to be made more compact.

Additionally, heat generated at the coil end can be efficiently conducted to the core, improving cooling capacity.

[Brief explanation of the drawing]

Fig. 1a is a side sectional view showing an embodiment of the present invention, Fig. 1b is a sectional view thereof, Fig. 2 is a perspective view of a salient pole core, and Fig. 3a is a side sectional view showing another embodiment. , 3rd
Figure b is a sectional view thereof, Figure 4 a is a side sectional view showing a conventional rotary type example, Figure 4 b is a sectional view thereof, and Figure 5 a.
5 is a side sectional view showing a conventional example of a linear motor.
Figure b is a sectional view thereof. Note that the same components are given the same reference numerals. 1 is a yoke, 2 is a salient pole core, 3 is a coil, 4 is a hollow, 5 is an electromagnetic pole, 6 is a C-shaped core, 7 is an E-shaped core, 8 is a salient pole, 9 is a coil end, 10 is an outer surface, 11 is the inner surface.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a motor core in which a laminated core yoke and a laminated core having salient poles are wound, the lamination direction of the core is substantially perpendicular to the lamination direction of the yoke, and concentrated winding is applied at both ends. A motor core comprising a laminated salient pole core provided with a recess for accommodating a coil end portion in order to reduce the portion of the coil end portion protruding from a yoke end face. 2. In a rotary motor core in which a wire is wound around a laminated core yoke and a laminated core having salient poles, the stacking direction of the cylindrical laminated core yoke and the core attached to the inner diameter of the yoke is approximately perpendicular to the stacking direction of the yoke. A motor iron core comprising a laminated salient pole core with a recess provided at both ends to house the coil end in order to reduce the portion where the end part of the concentratedly wound coil protrudes from the end face of the yoke. 3. In a linear motor core in which wires are wound around a laminated core having salient poles, a laminated C-shaped core is fixed to the center of the C-shaped core, and the lamination direction is approximately perpendicular to the lamination direction of the C-shaped core. , a motor core comprising a laminated salient pole core with recesses provided on both sides to accommodate the coil ends in order to reduce the portion where the end portions of the concentratedly wound coil protrude from the core end surface.