JPH0344150Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a sound insulation structure for the operating sound of a washing machine.

(b) Prior Art When a washing machine is operated at night in an apartment, etc., the sound of its operation can reach neighboring rooms above, below, left and right, causing a nuisance. A structure for blocking the operating noise is shown in Japanese Patent Application Laid-Open No. 57-37495, in which the operating noise is blocked by a waterproof saucer provided on the lower surface of the outer frame.

(c) Problems that the invention aims to solve However, if the bottom surface of the outer frame is completely closed by the waterproof saucer as described above, the heat generated by the operation of the drive motor will not be exhausted to the outside. The drive motor could overheat, which included a fire hazard.

This invention has been made in view of the above points, and is intended to provide a washing machine that operates quietly and does not have to worry about overheating of the drive motor.

(d) Means for solving the problem In this invention, in the opening on the bottom of the outer frame,
It has a structure in which a sound insulating bottom cover is attached that has a heat exhaust vent that does not allow sound to pass through.The detailed structure includes an outer frame body with an opening at the bottom, a washing tub disposed inside the outer frame body, The bottom surface of the outer frame is equipped with a stirring blade rotatably provided at the bottom of the washing tub, a motor for driving the stirring blade provided below the washing tub inside the outer frame, and a vent with a noise reduction mechanism. and a sound-insulating bottom cover used to cover the opening of the washing machine, and the sound-absorbing mechanism is a ventilation passage whose cross section is bent at least approximately 180 degrees.

(e) Function Operation noise is blocked by the sound insulating bottom cover, and operation noise passing through the vent is muffled by the noise reduction mechanism. Heat generated by the drive motor is exhausted through the vent.

(F) Example This invention will be explained in detail below with reference to example drawings.
This invention is not limited to the following examples.

Reference numeral 1 denotes an outer frame body constituting the outer shape, and the top and bottom surfaces are open. A washing tub 2 is attached to the outer frame 1 by a hanging rod 3. This washing machine is a fully automatic type, and therefore, a dewatering tub 4 is further provided within the washing tub 2. A stirring blade (pulsator) 5 is rotatably provided at the bottom of the dehydration tank 4. Reference numeral 6 denotes a rotation control unit for the stirring blade 5, which controls the rotation of the stirring blade 5, and controls the rotation of the stirring blade 5 and the dehydration tank 4.
Performs the switching operation of power transmission to and from. Reference numeral 7 denotes a driving motor for the stirring blade 5, and power is transmitted from the driving motor 7 to the stirring blade 5 or the dehydration tank 4 via a rotation control section 6 via a belt 8.

A sound-insulating bottom cover 9 is provided to cover the opening at the bottom of the outer frame 1. An annular ventilation hole 10 is provided approximately in the center of the sound-insulating bottom cover 9. A pair of rising walls 11 and 12 are continuously and integrally provided on the sound insulating bottom cover 9 at a portion located at the upper peripheral edge of the vent 10, and one of the rising walls 12 is bent. These rising walls 11 and 12 constitute a ventilation passage 13 that is bent twice at approximately 180°, that is, a sound deadening mechanism.

When washing or spin-drying is performed in the washing machine configured as described above, the sound insulating bottom cover 9 blocks the operating noise from reaching the bottom, and the operating noise passing through the vent 10 is deflected. Since the sound is muffled when passing through the ventilation path 13, as a result, leakage of sound downward from the washing machine is almost prevented.

On the other hand, the heat generated from the drive motor 7 during operation is discharged to the outside through the air passage 13, thereby preventing the drive motor 7 from overheating.

The sound damping mechanism provided in the vent 10 includes a sound absorbing material made of a non-woven fabric made of glass wool, for example.
It may be configured by being attached to the zero surface.

Furthermore, although the above-mentioned embodiment shows a fully automatic type washing machine, this invention can of course also be implemented in a type of washing machine in which a washing tub and a dehydrating tub are located separately. In that case, the vent may be located below the drive motor.

(G) Effect This device is constructed as described above, and the presence of the sound insulating bottom cover not only insulates the operating noise, but also muffles the operating noise that passes through the vent, so that the operating noise is not transmitted downward. Leakage is minimized, while overheating of the drive motor is prevented as heat is exhausted through the vents.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of this invention. DESCRIPTION OF SYMBOLS 1... Outer frame body, 2... Washing tub, 5... Stirring blade, 7... Drive motor, 9... Sound insulation bottom cover, 10
...Vent, 13...Vent passage (noise reduction mechanism).

Claims (1)

[Scope of Claim for Utility Model Registration] 1. An outer frame body with an open bottom, a washing tub disposed within the outer frame body, a stirring blade rotatably provided at the bottom of the washing tub, and an outer frame body. a stirring blade drive motor provided below the washing tub, and a sound insulating bottom cover that is provided with a vent having a sound damping mechanism and used to cover an opening in the bottom of the outer frame, and the sound damping mechanism is at least A washing machine characterized by an air passage that bends 180 degrees. 2. The washing machine according to claim 1, wherein the washing tub is integrally equipped with a dehydration tub.