JPS6045396A - Dehydration 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 dehydrating washing machine.

Conventional configurations and their problems Conventionally, various configurations have been proposed for the drive device of the dehydration washing R machine. Several structures have been proposed that take advantage of the flatness of the magnetic pole surface and integrate the motor part and the washing/drying cutter section. For example, the patent application 1977-1
As shown in Japanese Patent Application No. 09398 and Japanese Patent Application No. 55-27185, two sets of axial gap induction motors are provided in each washing and dehydrating machine as a driving device for a dehydrating washing machine, and the central part of the rotor frame on the dehydrating side For example, an insert part with serrations that can slide in the axial direction may be integrally molded to transmit the rotational torque of the motor during dehydration, or the outer periphery may be used to stop the washing/dehydration tank during braking. A structure has been proposed in which this is achieved by frictional resistance between the end ring portion 9 of the brake shoe and a brake shoe attached to a cover facing in the axial direction. However, with this configuration, the end ring part of the rotor on the leg side is mainly made of pure aluminum for electrical purposes, so there are problems in terms of strength and durability. The circumferential speed is high, and so-called heat generation during braking and brake squeal are likely to occur.Accordingly, in reality, such a configuration of the brake part has not been realized and has not been commercialized.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a high-performance and highly reliable crotch washing machine.

414th aspect of the invention In order to achieve the above object, the dehydrating washing machine of the present invention has an axial space in which the dehydrating ll1lllO-d is placed above the stator and the washing side rotor is placed below in the lower part of the water tank containing the washing and dehydrating tank. The frame that has an induction motor and supports the rotor on the dehydration side is a gear storage case fixed to the end of the hollow dehydration shaft containing the rotor. A brake shoe is connected to the washing shaft through a gear mechanism, and a brake shoe is fixed to the upper surface of the dewatering rotor frame, and the brake shoe is operated by sliding the cover covering the dewatering rotor and the brake shoe, which is provided at a position facing the brake shoe. ], a plurality of spiral slits are arranged approximately radially on the contact surface of the brake shoe with the dewatering rotor cover, and the outer periphery of these slits has an angle in the counter-rotational direction of the dehydrating rotor. It is something that has been set.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a washing and dehydrating tank, the body of which is provided with a large number of small holes 2 for weak water use, and a balancer case 3 attached to the opening. 4 is a water tank. Reference numeral 5 denotes a substrate, and a vibration isolating device 6 is disposed on the outer edge of the substrate, and vibration isolating support is provided from above. 7 is the stator of the washing side motor, and at the opposite position is the rotor 8 of the washing side motor.
is installed. 9 is a washing rotor frame that supports the rotor 8 of the washing side motor, and the rotor 8 is attached to this frame 9.
The product is fixed by welding etc. A washing sleeve 10 is press-fitted into the center of the frame 9 and supported by a bearing 11 and a gear shaft 12. 13 is a protective cover. Reference numeral 14 denotes a stator of the dewatering side motor, and the rotor 15 of the dehydrating side motor is disposed at an angle i opposite to the stator 14, similar to the washing side. A dewatering rotor frame 16 supports the rotor 15, and the rotor 15 is fixed to this frame 16 by welding or the like. A body section is formed in two stages in the center of the frame 16, and the inner periphery of the body section of the first stage is provided with a [ration 17] for transmitting the rotational torque of the dewatering rotor 15.
is formed. Reference numeral 18 denotes a gear case Δ, and serrations 19 are formed on the outer peripheral portion of the gear case Δ so as to engage with serrations 17 formed on the dewatering rotor frame 16. 20 is gear case B, gear case A
18, and a reduction gear 21 is disposed inside. A metal member 22 supports the gears 71 to 12. 23 is a hollow dehydration shaft that encloses the wash'+Tl shaft 24. Mechanically, dehydration shaft 23, gear case A18
and gear case B20 form the shaft of the weak water side rotor 15, both ends of which are supported by bearings 25.2G. 27.28 is the metal that supports washing @24. 2
Reference numeral 9 denotes a dewatering rotor cover that holds the bearing 2G and also serves as a brake plate. 30 is a brake shoe attached to the dewatering rotor frame 1G, and the sliding surface has a plurality of groove-like slits 1-31. A spring 32 is arranged between them. 33 to 36
is a seal body to prevent water leakage. 37 is a stator frame formed by integrally molding the stators 14 and 7 of the dewatering side motor and the washing side motor with polynisdel resin, etc., and this, the protective cover 13 and the dehydrating rotor cover 2
9 are fixed together with screws 38 or the like to form the entire drive device into a unit.

Three are pulsators fixed to the upper end of the washing shaft 24;
A flange 0 is fixed to the upper end of the dehydration tank 23 and supports the washing and dehydration tank 1 in a fixed manner.

FIG. 2 shows an enlarged view of the brake shoe 30, and the sliding surface of the brake shoe 30 with the dewatering rotor cover 29 is provided with a plurality of groove-shaped sleeves 1 31 in a substantially open shape.
Its shape has an angle at its outer periphery in the counter-rotation direction of the dewatering side rotor 15 (in the direction opposite to the direction of arrow A in FIG. 2a).

Next, to explain the operation of the present invention, the washing side opening 8
is rotated by the gear shaft 1 via the washing rotor frame 9.
2, and after being decelerated by the reduction gear 21, the washing shaft 2
After step 4, the pulsator 39 is rotated to perform washing. - The rotation of the strong water side rotor 15 is transmitted from the dewatering rotor frame 1G to the gear case A18 via the serrations 17, 19, and rotates the washing/dehydrating tank 1 via the weak water shaft 23! Perform dehydration. At this time, the dewatering side rotor 15 moves downward against the urging force of the spring 32 due to the axial magnetic attraction force generated between it and the stator 14, and a gap is created between the brake shoe 30 and the dewatering rotor cover 29. It becomes freely rotatable (Figure 1 shows the state when the morph is energized). When dewatering is completed and the motor is de-energized, the axial magnetic attraction force disappears, so the brake shoe 30 is pressed against the dewatering rotor cover 29 by the biasing force of the spring 32, a braking action is generated, and the washing/dehydration tank is closed. The rotation of 1 stops.

Effects of the Invention As described above, according to the present invention, a brake shoe is attached to the dewatering side rotor, and the brake shoe has a spiral slit that is angled in the counter-rotation direction of the dehydrating rotor at the contact surface with the dehydrating rotor cover. By placing multiple pieces of
It is possible to reduce the noise generated between the brake shoe and the dewatering rotor cover when stopping the rotating washing and dehydrating tank during dewatering. At the same time, by changing the number, shape, and arrangement pitch of the spiral slits to an unequal pitch, etc., the frequency characteristics of the sliding sound during braking can be changed, resulting in a more harsh sound without deteriorating braking performance. . Also, since the groove-shaped slit has an angle in the counter-rotation direction of the dehydration rotor, wear particles and dirt existing between the brake shoe and the dehydration rotor cover pass through the groove-shaped slit and are released to the outer periphery. . This is done every time the brake mechanism operates, so stable braking performance can always be maintained. As described above, according to the present invention, it is possible to realize a self-driving dehydrating wash machine including a brake mechanism that utilizes the axial magnetic attraction force of the axial gap induction motor.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 shows a dehydration method if:
Fig. 2a is a plan view of the brake shoe, and Fig. 2b is a sectional view of the brake shoe. 1... Washing and dehydration tank, 4... Water tank, 7... Stator, 8... Rotor, 9... Washing rotor frame, 1
2... Directly after the gear shaft 14... Stator, 15
... Rotor, 16 ... B-shui rotor frame, 17
...Relation, 18...Gear case A119
... Serration, 20 ... Car case B, 21
... Reduction gear, 23 ... Dehydration shaft, 24 ... Washing i
f, '111.2... Dehydration rotor cover, 30.
- Brake shoe, 31...slib 1~. 32...
Spring agent Yoshihiro Morimoto Figure 1 Figure 7 (a)

Claims (1)

[Claims] 1. In the lower part of the water tank containing the washing and dewatering (a), there is an axial gap induction motor with a dewatering side rotor above the stator and a washing side rotor below the stator. The supporting frame is slidably engaged in the axial direction with respect to a gear storage case fixed to the end of a hollow dehydration shaft containing a washing shaft, while the gear storage case is attached to the washing side. A cover for the dewatering rotor is connected to the r-axis through a reduction gear mechanism installed inside the dewatering rotor frame, and a brake shoe is fixed to the upper surface of the dewatering rotor frame, and a cover for the dewatering rotor is provided at a position facing the brake shoe. The brake shoe is configured to generate a braking force by sliding on the brake shoe, and the contact surface of the brake shoe with the Tsukimizu rotor cover has a plurality of substantially radial spiral slits in front, and the outer periphery of these slits 2. A dewatering washing machine according to claim 1, wherein spiral slits are arranged at unequal pitches in the brake shoe.