JPS59175368A - Double cup-shaped motor - Google Patents

Abstract

PURPOSE:To shorten the axial length by providing the first motor in one frame, providing the second motor inside the first motor, and providing the first and second output shafts at both right and left sides. CONSTITUTION:The field magnet 2 of the first motor is mounted on the inner periphery of a frame 1, and the stationary core 4 and a nonmagnetic material 5 are disposed on the inner periphery of the first cup-shaped rotor 3. Further, the field magnet 6, the cup-shaped rotor 7, and the stator core 8 of the second motor are concentrically disposed in the inner periphery. The rotors 3, 7 are respectively engaged with the first and second output shafts 11, 12. The shafts 11, 12 are rotatably supported by bearings 15, 16. Armature coils wound in a cup shape on the rotors 3, 7 are respectively connected to commutators 9, 10, and brushes 17, 18 are slidably contacted with the outer periphery of the commutator.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cup motor, and more particularly to a dual cup motor having two output shafts.

As shown in Fig. 1, a conventional cup-shaped motor has a field magnet (1) attached to the inner periphery of a frame (F), and a cup-shaped rotor (armature) (R) attached to this with a gap in between. , and is rotatably supported by bearings B and B' mounted at the centers of the frame F and the end plaquela E.

A fixed iron core (yoke) Y is arranged on the inner periphery of the cup-shaped rotor R with a gap f between the field magnet M and the cup-shaped rotor R.
are arranged concentrically.

Then, the armature coil W is passed through the commutator C from Bra/2.
It rotates when energized. By the way, as shown in the illustrated example, the rotor of a conventional cup-shaped motor is literally long and deep in the shape of a cup, that is, the motor as a whole is generally long in the axial direction.

For example, when multiple units are used in tandem, a considerable amount of installation space is required.

The present invention has been made in view of the above problem, and has two cup-shaped motors built into one frame that are axially short and close to a flat type so as to be suitable for narrow installation spaces. The shaft is provided with a shaft, and as it is short in the axial direction and widened in the radial direction as described above, a larger torque can be obtained.

An embodiment of the present invention will be described below with reference to FIG.

A field magnet 2 of a first motor is attached to the inner periphery of the frame 1, and a first cup-shaped rotor 3 is mounted on the inner periphery of the first cup-shaped rotor 3 with an air gap therebetween. Furthermore, a cross-sectional annular non-magnetic material 5 is arranged on the inner periphery of the first motor fixed iron core 4 and on the side facing the bottom surface of the first cup-shaped rotor 3, and a second A field magnet 6 of the motor, a second cup-shaped rotor 7 separated by an air gap, and a fixed iron core 8 of the second motor separated by an air gap 7 are attached to the inner periphery of the second cup-shaped rotor 7. It is fixed in the center of the non-magnetic material 5 concentrically with the second cup-shaped rotor. The first cup-shaped rotor 3 and the second cup-shaped rotor 7 are fitted onto the first output shaft 11 and the second output shaft 12, respectively. Both the first and second output shafts are supported by bearings 13 and 14 on the left and right sides of the coaxial center of the frame 1, and a bearing 15 fitted inside the fixed iron core 8 of the second motor.
, 16, each of which is rotatably supported.

The first and second cup-shaped rotors 3 and 7 are both coreless, and armature coils wound in a cup shape are fixedly formed with resin or the like and connected to commutators 9 and 10, respectively.
Brushes 17 and 18 slide on the outer periphery of the commutator and are energized to rotate the first and second motors.

As described above, the double cup type motor according to the present invention includes a first motor inside one frame and a second motor inside the frame, and has first and second output shafts on both left and right sides, respectively.
Compared to two conventional motors, the axial length is extremely short, requiring less installation space, and the thick B-shape in the radial direction allows for more precise torque. effective.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the upper half of a conventional cup-shaped motor, and FIG. 2 is a cross-sectional view of the upper half of a double-cup motor according to the present invention. 1...Frame 2...Field magnet of the first motor 3...First cup-shaped rotor 4...Fixed iron core of the fist first motor 5...Non-magnetic material 6...Fist 9 Second motor Field magnet 7...Second cup-shaped rotor 8.0.Second motor fixed iron core 11.e.First output shaft 12-...Second output shaft Applicant Shinko Electric Co., Ltd. Agent Patent attorney Haruya Saito

Claims (1)

[Scope of Claims] A field magnet of a first motor is disposed on the inner periphery of the frame, a first cup-shaped rotor is disposed on the inner periphery of the first cup-shaped rotor, and a first cup-shaped rotor is provided on the inner periphery of the first cup-shaped rotor with an air gap therebetween. A fixed iron core of the motor, a field magnet of a second motor via a non-magnetic phase on the inner periphery of the fixed iron core of the first motor, and a second cup-shaped rotor separated from the field magnet by an air gap. A fixed iron core of the second motor is disposed on the inner periphery of the second cup-shaped rotor, and the fixed iron core of the second motor is disposed throughout the air gap. and a second cup-shaped rotor are fitted onto the first output shaft and the second output shaft, respectively, so that both the first and second output shafts are rotatable to the left and right on the coaxial center of the frame, respectively. A double cup type motor characterized by being pivotally supported.