JPS6077792A - Electric 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 This invention relates to an electric washing machine.

Structure of conventional examples and their problems In recent years, the demands on the cleaning performance of electric washing machines have increased more and more, and there has been a strong demand for products that do not cause fabric damage or tangles, along with improved cleaning power. In order to meet these demands, it is necessary to drive large rotor blades at low speeds. In order to obtain low speed rotation, in the conventional belt reduction method,
This can be achieved by reducing the diameter of the drive pulley and increasing the diameter of the impeller pulley, or there is a problem in that the transmitted horsepower decreases because there is a restriction on the distance between the axes of the motor and the impeller pulley.

OBJECTS OF THE INVENTION It is an object of the present invention to provide an electric washing machine that has a compact rotor blade and can be driven to rotate at a low speed with a large transmission torque.

Structure of the Invention In the electric washing machine of the first invention, rotary blades are connected to the inner end of the washing tub of a rotating shaft penetrating the washing tub, with their shaft centers aligned, and an outer peripheral edge is connected to the outer end of the washing tub of the rotating shaft. Wheels with cylindrical flanges are connected along the flange section with their axes aligned, and the output shaft of the motor is placed parallel to the side of the rotating shaft inside the flange section and attached to the output shaft. The rotor for power transmission is pressed against the inner circumferential surface of the cylindrical flange, and by transmitting the rotational force of the motor to the rotor blade through the wheel and the rotor for power transmission, the rotor blade can be made compact. In the configuration,
Furthermore, the large transmission torque enables low-speed rotational driving.

An electric washing machine according to a second aspect of the invention includes a cylindrical body in which a plurality of grooves extending in the axial direction of the cylindrical body are formed in parallel in the circumferential direction on the outer surface of the cylindrical body at the connection portion between the wheel and the rotary shaft according to the first aspect of the invention. A cylindrical elastic body is externally attached to the outer end of the washing tub, and a cylindrical elastic body is elastically crimped onto the outer periphery of the cylindrical body, and a plurality of axially extending grooves are formed in parallel in the same direction on the inner circumferential surface of the bearing hole in the center of the wheel. The bearing hole is formed and fitted onto the outer part of the cylindrical elastic body in an elastically crimped manner, and the noise and vibration generated at the joint between the wheel flange and the power transmission rotating body can be suppressed. It is absorbed by the cylindrical elastic body and prevented from being transmitted from the rotating shaft to the rotary blades.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. 1 and the second embodiment. In the figure, 1 is the outer frame, 2 is the washing tub,
On its bottom surface, there is a rotor blade 4 rotatably supported by a bearing 3 and a rotary shaft 5 . The lower end of the rotating shaft 5 protrudes downward from the bearing 3, and a cylinder 10 is fixed to the protruding portion by screws 14 or the like.

A plurality of grooves 13 extending in the axial direction are formed in parallel in the sub-direction on the outer part of the cylindrical body 10, and convex parts 15 are formed on the inner peripheral part of the cylindrical elastic body 11 in correspondence with the grooves 13. The elastic body 11 is loosely fitted onto the outer periphery of the cylinder 10, and the convex portion 15 is loosely press-fitted into the groove 13. Elastic body 11
The connection between the internal gear 9 and the internal gear 9 is similar, and a plurality of grooves 12 extending in the axial direction are formed in parallel in the circumferential direction on the inner peripheral surface of the bearing hole provided in the center of the internal gear 9. Then, the convex portion 16 formed on the outer periphery of the elastic body 11 is loosely press-fitted into the groove 12. In this way, the rotating shaft 5 is fitted through the bearing hole of the internal gear 9. Note that the convex portions 15 and 16 provided on the inner and outer circumferential surfaces of the elastic body 11 are not necessarily necessary; that is, the restoring force of the elastic body 11 forms part of the inner and outer circumferential surfaces into the grooves 1.
3 and 12 to prevent slipping. Reference numeral 7 denotes a motor, which is fixed to the underframe 6 on the bottom of the outer frame 1.

The output shaft 7a of this motor 7 is arranged parallel to the side of the rotating shaft 5 inside the external part of the internal gear 9, and the pinion 8 attached to this output shaft 7a is connected to the tooth part 9a of the internal gear 9. It's meshing.

The operation of this @Kikooki is that the motor 7 rotates 1m<ll
1lJ, the internal gear 9 rotates via the pinion 8, the rotating shaft 5 rotates via the elastic body 11, and the rotor blade 4 is rotationally driven.

In this way, since the rotational force of the motor 7 is transmitted to the rotary blade 4 via the pinion 8 and the internal gear 9, the distance A between the output shaft 7a of the motor 7 and the rotary shaft 5 can be set small. That is, the rotor blade 4 can be driven to rotate at a low speed with a large transmission torque while having a compact configuration (effect of the first invention). Moreover, since it is not a conventional belt drive system, almost no blood pressure is generated in the bearing 3. Moreover, since the elastic body 11 is press-fitted between the cylindrical body 10 and the internal gear 9, the meshing sound and vibrations between the binion 8 and the internal gear 9 during rotational driving are absorbed by the elastic body 11, and the rotating shaft 5 to the rotor blade 4, and noise generation can also be prevented (second
effect of the invention).

Note that instead of the internal gear 9, a wheel having 7 cylindrical runs 9 is used along the outer 8 edges, and in place of the pinion 8, a power transmission rotating body is used to convert this rotating body into the above-mentioned cylindrical shape. It may be made to come into pressure contact with the inward facing surface of the flange portion.

Effects of the Invention According to the electric pump of the present invention, the rotor blade has a compact configuration and can be driven to rotate at low speed with a large transmission torque.
The effect is that almost no surface pressure is generated on the bearing.

[Brief explanation of drawings]

FIG. 1 is a sectional view of one embodiment of the present invention, and FIG. 2 is an enlarged sectional view of the main part thereof. 2... Washed sandalwood, 4... Rotating blade, 5... Rotating shaft, 7
...Motor, 7a...Output shaft, 8...Binion,
9... Internal gear, 10... Cylindrical body, 11... Elastic body Fig. 1 Fig. 2

Claims (3)

[Claims] (1) A washing tub, a rotating shaft penetrating the washing tub, a rotating blade connected to the inner end of the rotating shaft with their axes aligned, and a cylindrical flange section along the outer periphery. a wheel connected to the outer end of the washing tub with its axis aligned with the outer end of the rotating shaft; a motor having an output shaft arranged parallel to the side of the rotating shaft inside the flange; and an output shaft of the motor. and a power transmission rotating body attached to the wheel and pressed against the inner circumferential surface of the flange portion of the wheel. (2) The wheel is an internal gear having teeth formed along the inner circumferential surface of the flange portion, and the power transmission rotating body is a pinion meshed with the internal gear. Electric washing machine as described in section. (3) A washing machine, a rotating shaft penetrating the washing tub, a rotor blade connected to the washing tub with its axis aligned with the inner end of the rotating shaft, and a groove extending in the direction of the cylinder axis on the outer circumferential surface. A plurality of cylindrical bodies are formed in parallel in the direction and are exposed on the outer end of the washing tub of the rotating shaft, a cylindrical elastic body is fitted onto the outer periphery of the cylindrical body in an elastically crimped state, and a cylindrical body is formed along the outer periphery of the cylindrical body. The cylindrical elastic body has a flange portion having a shaped flange portion, a bearing hole in the center thereof, a plurality of grooves extending in the axial direction are formed in parallel in the circumferential direction on the inner peripheral surface of the bearing hole, and the bearing hole is formed in the outer peripheral portion of the cylindrical elastic body. A wheel fitted onto the outside in an elastically crimped state, and a motor having an output shaft disposed inside the outer periphery of the wheel and parallel to the side of the rotating shaft. An electric washing machine equipped with a rotating body for power transmission that is in pressure contact with a surface.