Stator of electric motor
First Claim
Patent Images
1. An electric motor, comprising:
- a rotor; and
a stator including an insulator member having an upper half shell and a lower half shell, each of said upper and lower half shells including a ring based portion and a pole retaining portion, said pole retaining portion having a plurality of troughs, said troughs extending radially outward from the outer periphery of the ring-based portion in a multipetalous shape, the troughs of said upper shell adapted to align with the troughs of said lower shell;
a like plurality of substantially parallelepiped stator poles retained in respective pole retaining portions of the insulator member, each of said stator poles being sandwiched within respective troughs of said upper and lower shells;
a plurality of windings, each of said windings applied around a respective stator pole retained in the respective pole retaining portion; and
a yoke member which covers the outer periphery of the insulator member to integrally combine each pole with the yoke member.
0 Assignments
0 Petitions
Accused Products
Abstract
A stator of an electric motor provides pole retaining portions which retain the poles therein and are radially project at their end portions towards the outer periphery in a ring shape, whereby winding operations around the outer surface of the pole retaining portion are performed from the outside without any restriction, thus allowing a small-sized motor stator to be easily manufactured.
-
Citations
22 Claims
-
1. An electric motor, comprising:
-
a rotor; and a stator including an insulator member having an upper half shell and a lower half shell, each of said upper and lower half shells including a ring based portion and a pole retaining portion, said pole retaining portion having a plurality of troughs, said troughs extending radially outward from the outer periphery of the ring-based portion in a multipetalous shape, the troughs of said upper shell adapted to align with the troughs of said lower shell;
a like plurality of substantially parallelepiped stator poles retained in respective pole retaining portions of the insulator member, each of said stator poles being sandwiched within respective troughs of said upper and lower shells;
a plurality of windings, each of said windings applied around a respective stator pole retained in the respective pole retaining portion; and
a yoke member which covers the outer periphery of the insulator member to integrally combine each pole with the yoke member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. An electrical motor, comprising:
-
a rotor; and a stator including a plurality of independent stator poles arranged in equally spaced radial directions around the outer periphery of the rotor and a winding applied on each of said poles, the stator further including a pair of insulator members having an upper half shell and a lower half shell, each of said upper and lower half shells including a ring based portion and a pole retaining portion having a plurality of troughs for accommodating the stator poles, said troughs extending radially outward from the outer periphery of the ring-based portions in a multipetalous shape, the troughs of said upper shell adapted to align with the troughs of said lower shell, each of said stator poles being retained by a respective pole retaining portion of the pair of insulator members, said poles being sandwiched within respective troughs of said upper and lower shells;
each of said windings applied around a respective stator pole retained within the respective pole retaining portion; and
a yoke member which covers the outer periphery of the insulator members to combine integrally with the respective poles. - View Dependent Claims (11, 12, 13)
-
-
14. An electrical motor, comprising:
-
a rotor; and a stator including an insulator member having an upper half shell and a lower half shell, each of said upper and lower half shells including a ring based portion and a pole retaining portion having a plurality of troughs for accommodating stator poles, said troughs extending radially outward from the outer periphery of the ring-based portion to form a multipetalous shape, the troughs of said upper half shell adapted to align with the troughs of said lower half shell;
a plurality of individual stator poles being integrally embedded within a respective pole retaining portion of the insulator member so as to form a radially outwardly projecting support, said poles being arranged mutually independently in the radial directions;
a plurality of windings each applied around the respective radially outwardly projecting supports; and
a yoke member which covers the outer periphery of the insulator members to combine integrally with the respective pole. - View Dependent Claims (15, 16, 17)
-
-
18. An electric motor comprising, in combination, a rotor and a stator including a plurality of stator poles arranged in the radial directions around the outer periphery of the rotor and windings applied on said poles, the stator further including an insulator member having a ring based portion and a plurality of pole retaining portions, each pole retaining portion projecting radially outward from the outer periphery of the ring-based portion, a fixed projection being provided on the inner periphery of one end face of the ring-based portion of the insulator member, each of said stator an insulator member having an upper half shell and a lower half shell, each of said upper and lower half shells including a ring based portion and a pole retaining portion having a plurality of troughs for accommodating stator poles, said troughs extending radially outward from the outer periphery of the ring-based portion to form a multipetalous shape, the troughs of said upper half shell adapted to align with the troughs of said lower half shell;
- a plurality of individual stator poles being integrally embedded within a respective pole retaining portion of the insulator member so as to form a radially outwardly projecting support, said poles being arranged mutually independently in the radial directions;
a plurality of windings each applied around the respective radially outwardly projecting supports; and
a yoke member which covers the outer periphery of the insulator members to combine integrally with the respective pole. - View Dependent Claims (19, 20, 21, 22)
- a plurality of individual stator poles being integrally embedded within a respective pole retaining portion of the insulator member so as to form a radially outwardly projecting support, said poles being arranged mutually independently in the radial directions;
Specification