JPS6092797A - Drive apparatus of dehydrating washer - 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] Industrial applications The present invention relates to a driving device for a dehydrating washing machine.

Conventional configurations and their problems Conventionally, various configurations have been proposed for drive devices for dehydrating washing machines. Some of them utilize an axial gap induction motor and take advantage of its structural characteristics, such as its flatness and the flatness of the magnetic pole surface, and integrate a dehydration switching mechanism into the motor part and the washer. There are several.

For example, as shown in Japanese Unexamined Patent Publication No. 513-121595, as a drive device for a dehydrating washing machine, a dehydrating side rotor is disposed above a stator core, a washing side rotor is disposed below, and a washing machine is used. The structure is such that motors suitable for each purpose are provided.

However, in this example, the rotor on the dewatering side is held by a bearing placed on the stator section and a bearing placed on the board, but there is no measure to prevent misalignment between the board and the stator, and the shaft is It is difficult to ensure perpendicularity. In addition, when a dehydrating washing machine is in fully automatic course operation, when the dehydrating shaft and two-part bearing receive vibrations and large radial loads during dehydrating, the pressing force that is enough to fix the resin tapping screw to the water tank may cause the resin to deteriorate. Disassembly and reassembly S' for creep, service, etc.
The positional accuracy of the rotor on the dewatering side is always unstable due to insufficient tightening when performing step i, and abnormalities due to uneven magnetic attraction, vibration, or uneven gap occur between the magnetic pole surfaces between the rotor and stator. There are problems such as noise generation.

Purpose of the Invention The present invention solves the above-mentioned problems and realizes an inexpensive and highly functional driving device for a dehydrating washing machine.
The structure of i is more simplified, and it is highly functional and reliable.
The aim is to provide low-cost products.

Structure of the Invention In order to achieve the object described in J-, in a dehydrating washing machine in which a washing agitating blade is arranged at the inner bottom of a washing/dehydrating tank housed in a water tank, a washing machine for dewatering and washing #1 is provided below the water tank. A stator frame integrally molded to contain the two types of windings, a dewatering side rotor facing above the stator frame, and a washing side rotor facing the lower blade are connected to each other through an axial space. an induction motor, a hollow dehydration shaft that transmits rotational force to the washing and dehydration tub through a car storage case fixed to the dehydration side rotor; a washing shaft configured to transmit rotational force from a side rotor to the washing agitation blade via a speed reduction device in the gear storage case, and the dehydration shaft includes a bearing disposed at the center of the stator frame It is supported by a bearing disposed on a cover that covers the dewatering side rotor from above, and an integrally molded pin is protruded from a flange portion formed on the outer periphery of the stator frame, and this pin is attached to the opposite cover. It was said to be a drive unit for a dehydrating washing machine that was configured to fit into the sunken purling hole in the flange.

Therefore, the dewatering shaft is accurately held by the central bearing of the stator frame and the bearing of the cover, and the stator frame's receiving and fixing positions are held precisely by the pins and purling holes, so there is no positional shift and no vibration. This issue has also been resolved.

DESCRIPTION OF EMBODIMENTS Below, the present invention will be described in detail based on the accompanying drawings.
In the figure, reference numeral 1 denotes a washing/dehydration tank, which has a stirring blade 2 at the center bottom and a large number of small holes 3 for dehydration on the side. 4
is a balancer case, which is attached to the washing and dehydrating tank 1. 5 is a water tank, and a tank cover 6 is attached to the opening of the tank.

Reference numeral 7 denotes a first stator, and together with a dewatering side rotor 8 provided above and facing each other, a dewatering side axial gap induction motor is constructed. A second stator 9 constitutes an axial gap induction motor on the washing side together with a washing side rotor 10 provided opposite to the stator.

The first stator 7 and the second stator 9 are integrally molded to form a stator frame 11. As the molding material, for example, thermosetting polyester resin is used. A bearing 12 is mounted on the central inner circumferential portion of the stator frame 11.
and bearing 13 are installed. The dewatering side rotor 8 is integrally die-cast and fixed to the gear storage case 14. , 15 is a brake wheel, and a reduction gear 416 such as a gear is installed inside the gear storage case 14 fixed by welding.
is stored. A hollow dehydrating shaft 17 is press-fitted into the two wheels of the brake wheel 15, and a washing/dehydrating shaft 46t is fixed via a flange 18 by a lug I-18. These carrier storage case 14, brake wheel 15, and dewatering rack 17 support the dewatering side rotor 8 and transmit rotational force to the washing ltt and dewatering tank. Reference numeral 20 denotes a cover that covers the dewatering side rotor 8 from one side, and a bearing 21 is press-fitted in the center, and the dehydrating shaft is rotatably supported by this bearing 21 and the bearing 13 at the center of the stator frame All.

- The rotor 10 on the power washing side is attached to a motor shaft 22 whose two wheels communicate with the reduction gear 16 with a nut 23, and a metal 24 press-fitted into the gear storage case 14.
The motor shaft 22 is rotatably supported by a bearing 12 and a motor shaft 22 .

25 is a washing shaft and a metal 26.2 is installed inside the dehydrating shaft 17.
7 to agitate the rotational force of the speed reducer 16.
2. A pin 28 projects from the stator frame 11 and is fitted into a purling hole formed at the outer edge of the cover 20, and the cover 20 is fixed to the stator frame 11 by a claw portion 30. 31 is the entire drive device in water tank 5
It is fixed to the water tank 7 via mounting ears 32 provided on the outer periphery of the stator frame 11 and the cover 20 with screws.

33.34.35 is the seal body, water + l! Separates the washing water inside y7. A suspension 36 is supported by a spherical support portion 37 formed on the outer periphery of the water tank 5, and the entire water tank is suspended and supported by a rond 38.

2 to 5 are detailed explanations of the present invention, in which the force A
- The flange part 38 on the outer edge of 20/Hering hole 2
9 and a claw portion 30 for fixing to the stator frame 11.

The pin 28 that is integrally formed and protrudes from the flange portion 32 of the stator frame 11 is connected to the flange portion 32 of the cover 20.
It fits into a purling hole 28 formed at 8. At the same time, the claw portion 30 is bent toward the flange portion 32 and caulked, and the cover 20 and the stator frame II are assembled in a predetermined position.

Below 1. The operation according to the configuration described in L will be explained.

During washing, the first stator 7 is not energized;
Only the second stator 9- is allowed to communicate. When the second stator 9 is energized, the washing 7 side rotor lO rotates and its rotational force is transmitted via the motor shaft 22, reduction gear 16, and washing shaft 25 to drive the stirring blade 2 and perform washing 161. At this time, the brake equipment δ is installed so that the brake wheel 15 does not rotate.
(not shown).

During single-force dehydration, only the first stator 9 is energized. The rotational force of the dewatering side rotor 8 is transferred to the gear storage case 14.
, the brake wheel 15, the dehydration shaft 17, and the flange 18, the water is transmitted to the washing and dehydration tank 1, and dehydration is started. At this time, the brake device releases the brake on the brake wheel 15, allowing it to rotate freely.

Effects of the Invention In the dehydrating washing machine of the present invention, a fitting pin is integrally molded and protruded on the flange portion of the outer edge of the stator frame, and the fitting pin is fitted with a burring hole formed in the opposing cover. Even with the many vibrations and unbalanced loads that occur during dehydration during normal rotation, there is no misalignment between the stator frame and cover, and the center position of the upper and lower bearings can be kept constant. It is now possible to prevent gear gear noise and abnormal vibrations due to changes or unevenness in the rotor air gap.

Furthermore, in the present invention, in addition to fitting the pin into the eight-ring hole, the entire drive device is assembled by bending the claws protruding from the flange of the cover and crimping them onto the stator flange.
Furthermore, it can be made into a stronger unit, and stability can be ensured even when the flange portion is fixed with resin-tapping screws.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view showing an embodiment of the device of the present invention, Fig. 2 is an enlarged plan view of the cover, Fig. 3 is a sectional view taken along the line ■-■ in Fig. 2, and Fig. 4 is an enlarged view of the flange portion. The side view and FIG. 5 are the same sectional views. ■...Washing/dehydration tank 2...Agitation R5...Water tank 7
．． 9... Stator 8... Dehydration side rotor lO...
Washing 74m Side rotor 11... Stator frame 12
．． 13... Bearing 14... Gear storage case 16.
...Deceleration device 17...Dewatering shaft 18...Flanche 20...Cover 21...Bearing 25...Washing shaft 28...Pin 29...Purring hole 30...
Claw portions 32, 39...Flange portion agent Patent attorney Oshima -Ko Figure 1 Figure 2 Figure 3

Claims (2)

[Claims] (1) In a dehydrating washing machine in which a washing agitating blade is arranged at the inner bottom of a washing and dehydrating tank housed in a water tank, two types of windings for dehydration and washing are included in the lower part of the water tank. − of the molded stator frame and this stator frame
an axial gap induction motor having a dewatering side rotor provided facing in the E direction and a washing side rotor provided facing downward;
I! to the rotor on the dewatering side! a hollow dehydration shaft configured to transmit rotational force to the washing and dehydration tub through a gear storage case with an iIM; and a washing shaft configured to transmit rotational force to the washing stirring blade via a speed reduction device in the washing shaft, and the spin-drying shaft covers a bearing disposed at the center of the stator frame and a spin-drying rotor from above. The stator frame is supported by a bearing disposed on the cover, and a flange formed on the outer periphery of the stator frame has an integrally molded pin protruding from the flange, and this pin is supported by a bearing disposed on the opposite flange of the cover. - A drive device for a dehydrating washing machine characterized by being configured to be able to fit into a ring hole. (2) As a flange portion of the cover that covers the dewatering side rotor from above, a claw portion protruding from the side edge of the flange portion is bent downward to the flange portion of the stator frame to form an 11-pin function. The drive device for the dehydrating washing machine described.