JPS58155895A - Drive apparatus of rotary machinery - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a l! <This relates to a moving device, and more specifically, a drive unit that rotates a rotated body is composed of an axial gap induction motor, and a pre-key is arranged in a floating state on the upper surface of the rotor of the axial gap induction motor. The lining ensures reliable braking.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention implemented in a two-tub type washing machine will be described with reference to the accompanying drawings. In the figure, 1 is a housing of a two-tank washing machine, 2 is a dehydration tank, 3 is a dehydration unit arranged in the dehydration tank 2 so that it can rotate freely, 4 is a dehydration shaft whose one end is connected to the bottom of the dehydration unit 3, 6 is a bellows, 6 is a sealing member, and 7 is a bearing portion.

V is an axial air gap induction motor comprising a stator 8, a rotor 9 and a motor shaft 1o. The stator 8 is constructed by integrally molding an iron core 8&, a coil 8b, etc. with a resin material such as nonflammable thermosetting polyester.

The rotor 9 is made of rotor core 9 & aluminum base metal type 2 (
Dlv; commonly known as Shirumin. ), and is formed into a disk shape, and the boss portion, which is the center of rotation, is machined with a key groove 9b, for example, for engagement with a key 10a formed on the motor shaft 10. They are configured to be connected slidably in the axial direction and always in a fixed state in the rotational direction.

11 and 12 are motor bearings provided on the stator 8, which rotatably support the motor shaft 10. 13 is a coupling for connecting the upper end of the motor shaft 10 and the other end of the dewatering shaft 4, and 14 is a plurality of suspensions 7 that elastically support the driving section.

Reference numeral 15 denotes a brake lining which is flat and ring-shaped, and its sliding surface is located opposite to the outer surface of the rotor 9, that is, the upper surface of the rotor 9. It is incorporated in a floating state between.

Reference numeral 16a designates a plurality of air holes formed on the peripheral edge of the fixed plate 16. When the rotor 9 rotates, the air generated by the fins 9C integrally formed on the outer periphery of the rotor 9 flows through the air holes 16a'.
ii, and the stator 8 and rotor 9 are cooled by the flow of air at this time.

1 is a spring that is interposed between the motor bearing 11 and the motor bearing 9, and constantly biases the rotor 9 in the direction of separating it from the stator 8, and this biasing force causes the upper surface of the rotor 9 to be The brake lining 15 and the fixed plate 16 are brought into contact in a sandwich-like manner. This state is the third
As shown in the figure. When the stator 8 is energized, the field force causes the rotor 9 to move toward the stator 8.
It moves to the side in the axial direction and rotates. That is, the brake lining 15 is provided on the upper surface of the rotor 9, and a gap is created between the brake lining 15 and the fixed plate 16.

Numeral 19 is a suspension mounting screw that connects the fixing plate 16, stator 8, and suspension/gun 14 to the support 2o for supporting the suspension 14, and a screw for adjusting the gap between the upper surface of the brake lining 15 and the fixing plate 16. Spring washer 2
It is fixed by screwing through 1.

22 is a dehydration lid, which can open and close the upper opening of the dehydration liquid 3, and when the drive unit is energized, the dehydration i2
By opening 2, a lid switch (not shown) is opened and power to the axial gap induction motor V is turned off. At this time, the rotor 9 moves away from the stator 8 in the length direction of the motor shaft 1o due to the force of the spring 17, and the brake lining 16 on the upper surface of the rotor 9 comes into contact with the fixed plate 16, causing the rotating dehydrated liquid to move away from the stator 8. 3 is braked and its rotation is stopped.

Conversely, when the axial air gap induction motor M is energized, the rotor core 9a is attracted by the field force set by the core 8a of the stator 8, the coil 8b, etc., and at the same time, the rotor core 9a is attracted. 9 goes downwards, so
At the same time, the brake lining 16 separates from the fixed plate, the brake is released, and dehydration operation by rotating the dehydration liquid 3 is started.

Reference numeral 23 designates a dust-proof cap 1- that houses felt, etc. coated with grease to prevent water droplets or dust from entering the motor bearing 12 from the outside.

A fan 24 is provided at the lower end of the motor shaft 1o, is located below the stator 8, and cools the stator 8 by its rotation.

A washing tub 26 has a pulsator 2 at its inner bottom that is rotated by an induction motor 26 to agitate the laundry. 28 is the water supply hose connected to the water faucet, 29.30 is the washing tub 2
6 and the dehydration tank 2, especially the water supply route 3.
o is used to perform a so-called spin rinse, which repeats a cycle of supplying water to the laundry in the dehydrating liquid 3, then rotating it for dehydration, and fully braking it.

As described above, according to the present invention, in a configuration in which a rotated body is fully rotated by an axial gap induction motor, the brake lining is positioned in a floating state on the upper surface of the rotor, thereby achieving extremely non-pull movement without fixing the brake lining. A simple braking mechanism can be provided, and a structure that does not require much effort during assembly and maintenance can be provided.

Furthermore, during braking, both surfaces of the brake lining can contribute to braking, thereby improving braking performance.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view of a two-tub washing machine according to an embodiment of the present invention, Fig. 2 is a top view showing its driving section, Fig. 3 is a side view of the same half-section, and Fig. 4 is its brake. The lining is fully shown, and the same figure (N is its plan view, and the same figure (B) is a cross-sectional view. 3... Dehydration liquid (rotated body), M... Axial gap induction motor , 8...Stator, 9...
... Rotor, 15 ... Brake lining, 17
...Spring. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 639- Figure 2 Figure 3 Figure 4 (B>-11=ko'6

Claims (1)

[Claims] The drive unit that rotates the rotated body is composed of an axial gap induction motor, and this induction motor has a stator, a motor shaft that is rotatably supported by a bearing provided on the stator, and The rotor is slidable in the axial direction and connected in the rotational direction, and a spring is disposed between the stator and the rotor, and when the above-mentioned 1 transmission motor is not energized, the spring shown in +iff is attached. A driving device for a rotating device, wherein the rotor is configured to move in the axial direction by a force, and a brake lining incorporated in a floating state on the upper surface of the rotor shifts to a braking state due to the movement of the rotor.