JPH0698237B2 - Washing machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a washing machine.

(B) Conventional technology As a conventional example, the bottom ventilation hole of the main body, which is in a nearly sealed state, is closed during the dehydration process, so that sound insulation and low-noise fully automatic washing are performed without adversely affecting the cooling of the motor. What can obtain a machine is disclosed in JP-A-61-290985 (D06F37 / 26).

(C) Problem to be Solved by the Invention In this washing machine, it is necessary to fix the outer tub with a packing material in order to prevent the outer tub of the laundry from swinging during transportation. Since the bottom of the main body is shielded, the packing material could not be inserted into the main body.

On the other hand, in a conventional general washing machine in which the bottom of the machine frame of the washing machine is opened so that packing materials can be inserted as a measure for preventing the shaking of the outer tub of the laundry during transportation, the bottom of the machine frame is used to open the washing machine. In order to prevent children from putting their hands in the machine frame as much as possible, it is obliged that the gap between the lower end of the machine frame and the floor on which the washing machine is installed be small (for example, 50 mm or less).

In this case, when the washing machine is installed in a bathroom or the like and used, consider the water that falls and bounces on the floor of the bathroom.This bounced water easily reaches the lower end of the machine frame near the floor. And attach. Therefore, if the machine frame is made of sheet metal, it easily rusts.

The present invention is intended to provide a washing machine capable of suppressing noise leakage during operation and swaying of the outer washing tub during packaging and being resistant to rust.

(D) Means for Solving the Problems A washing machine of the present invention includes a washing machine frame made of sheet metal whose bottom surface is in an open state, a washing machine outer tub elastically supported in the machine frame,
A washing / dehydrating tub rotatably supported in the washing machine outer tub, and a rotary blade arranged at the bottom of the washing / dehydrating tub,
A washing machine is provided at the outer bottom of the washing / dehydrating tub, which rotates the rotary blades during washing and rotates the washing / dehydrating tub at a high speed during dewatering, and shields the bottom opening of the machine casing to wash the washing machine. A shielding member that suppresses noise generated during operation from leaking from the inside of the machine frame, and the shielding member,
A resin base located below the machine frame to support the machine frame, an opening formed in the bottom surface of the resin base, a guide rail formed at the edge of the opening, and a front side of the machine frame. A removable resin lid that is inserted into the resin base along the guide rail to close the opening, and a standing wall that is erected in the resin base along the circumference of the opening. A recess groove formed along the periphery of the opening by the standing wall and the inner wall of the resin base, the recess groove, and a plurality of recesses formed in the recess groove along the longitudinal direction of the recess groove. It is characterized in that it is composed of a partition body, and a part of the drive source is brought into the resin base.

The lid is made of high specific gravity resin. The high specific gravity resin is, for example. Produced by mixing calcium carbonate with polypropylene, the specific gravity of polypropylene is 0.9
The specific gravity was 1.35 with respect to 0.91.

(E) Action During packaging and transportation, the lid is pulled out to open the opening of the resin base, and the packing material that prevents movement of the outer washing tub is inserted through this opening. During operation of the washing machine, the lid is inserted to close the opening. As a result, it is possible to prevent driving noise from the drive source from leaking from the lower side of the machine frame, and to prevent children from putting their hands into the horizontal frame from the bottom, which is safe.

Further, although the washing machine frame is made of sheet metal, it constitutes a shielding member that shields the bottom open portion of the machine frame. The base and lid are made of resin having a larger sound absorption coefficient than sheet metal, and The base is provided with a standing wall to form a double wall structure, and a part of the drive source that generates noise is brought to the inside of the base, whereby the drive noise of the drive source can be considerably absorbed, and the machine frame It is possible to further suppress the drive noise of the drive source from leaking from below.

Further, the standing wall and the inner wall of the resin base form a groove along the periphery of the opening, and a plurality of partition bodies are formed in the groove along the longitudinal direction of the groove. As a result, the drive noises that have entered the groove are diffusely reflected by the partition bodies and cancel each other out, and in this respect also, the leakage of drive noises can be suppressed.

Further, the frame of the washing machine is made of sheet metal. On the other hand, both the base and the lid, which form the shielding member that covers the bottom opening portion of the machine frame, are made of resin. Thus, when installing and using a washing machine in a bathroom, etc., when considering the water that falls and bounces on the floor of the bathroom, this bounced water is the base of the shielding member that covers the bottom opening of the machine frame. Also, it easily reaches and adheres to the lid, but since these base and lid are made of resin, they do not rust. Also, the amount of water that bounces over the shielding member to the vicinity of the lower part of the machine frame and adheres to it is quite small, and the machine frame is made of sheet metal, but is resistant to rust.

(F) Embodiments Embodiments of the present invention will be described with reference to the drawings.

1 to 5, (1) is a main body of a fully automatic washing machine, which includes a machine frame (2) made of sheet metal and a polypropylene resin base (which supports a lower portion of the machine frame (2) ( 3) and. (4) is a washing outer tub suspended and supported by a suspension rod (5) and a vibration isolator (6) inside the main body (1), and (7) is freely rotatable in the outer tub (4) A washing / dehydrating tub supported by the rotor, (8) a rotary blade arranged at the bottom of the dehydrating tub (7), and (9) arranged at the outer bottom of the outer tub (4), part of which is As shown in FIG. 2, a drive source, that is, a drive motor, which reaches the inside of the resin base (3), the rotary blade (8) during washing
Is rotated, and the dehydration tank (7) is rotated in one direction at high speed during dehydration.

Reference numeral (10) is a synthetic resin top plate disposed on the upper part of the main body (1), and has a control box (11) formed at the front edge and a clothes inlet (12) formed at the center. ing. (13) is an upper lid that opens and closes the inlet (12).

Now, the resin base (3) is formed in a box shape having an open top surface, and a U-shaped opening (14) is formed at the center of the bottom surface (3a) thereof. (15) ... and (16) ... are support plates that are alternately formed so as to project inwardly from the upper and lower positions of the rim of the opening (14).
Guide rails (17) are formed on both side edges and the rear edge of 4). Reference numeral (18) is a sound insulation plate having substantially the same shape as the opening (14) and is made of high specific gravity resin, and the opening (14) is formed along the guide rail (17) from the front side of the main body (1). Inserted inside. Further, by making the thickness of the sound insulating plate (18) substantially equal to the thickness of the guide rail (17), when the sound insulating plate (18) is inserted, the peripheral edge of the sound insulating plate (18) is the guide rail ( The opening (14) is sealed by closely contacting the inner surface of (17). (19)
Is an erected wall, that is, an annular wall erected along the periphery of the opening (14). The wall (19) and the inner wall of the resin base (3) are attached to the edge of the opening (14). Along the groove (20)
... is formed. Within the groove (20), a plurality of partition bodies (20) are arranged along the longitudinal direction of the groove (20).
a) ... Are formed as shown in FIG. (21) is a drain hose connection port provided below the electric parts such as the drive motor (9).

FIG. 6 shows a front view of the control box (11), and (22) shows a standard course setting key consisting of washing-drainage / dehydration-rinse-drainage / dehydration-final rinse-drainage / final dehydration. (23) is a shortened course setting key that shortens each process time in the standard course, (24) is a wash time correction setting key, (25) is a rinse number correction setting key,
(26) is the setting key for adjusting the dehydration time, (27) is the start key for the manual program course set with these correction setting keys, and (28) is the setting key for the soaking process, which can be selected by setting it. A dipping and washing process is added before the course.

Thus, when the washing machine is operated, the sound insulation plate (18) shields the opening (14) to block the leakage of the driving sound of the motor (9) and the dehydration sound. . Further, at the time of packaging, the sound insulating plate (18) is removed to insert a packing cushioning material (29) into the opening (14), and the cushioning material (29) is used to the outer tub (4). Can be fixed.

Further, by providing a concave groove (20) on the periphery of the opening (14), water droplets that have condensed on the outer periphery of the outer tub (4) are stored here and leak out of the machine through the opening (14). I try not to.

Further, in particular, by using a resin having a high specific gravity as the material of the sound insulation plate (18), the weight and rigidity of the sound insulation plate (18) are increased, and the sound insulation plate (18) is less likely to rattle. There is. Therefore, rattling noise is not generated, and operating noise does not leak from the gap between the sound insulating plate (18) and the resin base (3) during rattling. According to the experiment, the noise could be reduced by about 2 dB as compared with the sound insulation plate (18) made of polypropylene.

FIG. 7 shows that the urethane foam (30) (30) as a sound absorbing material is adhered over the entire surface of the front surface and the back surface of the sound insulation plate (18). Due to the sound absorbing action, noise can be further reduced by 1 dB as compared with the above-mentioned embodiment. In particular, by providing such a sound absorbing material, noise in the high frequency band is absorbed, so the experimental value is 1d.
Although it is a reduction of B, I actually feel that the noise is extremely low.

Next, different forms of providing the sound insulating plate (18) with the sound absorbing material will be described.

FIG. 8 shows a molded felt (31) (31) attached in place of the urethane foam (30) (30).

FIG. 9 shows a case where the felt (32) is inserted into the inside of the sound insulating plate (18) during molding.

FIG. 10 shows a molding means for the sound insulation plate (18), which is foamed at a foaming ratio of 1.3 times so that a thin resin layer (33) remains on the entire surface. Then, the foam layer (34) inside this has a sound absorbing effect.

FIG. 11 shows an elastic material (35) formed by kneading asphalt and synthetic rubber in place of the urethane foam (30) (30).
(35) is attached. This elastic material (35) (35)
The one provided with is higher in weight and rigidity.

(G) Effect of the Invention According to the washing machine of the present invention, it is possible to prevent the operator from putting his / her hand in the machine frame to ensure safety, and to sufficiently block the drive noise of the drive source, and to provide the shielding member. Since it can be opened if necessary, the washing tub can be easily supported during packing and transportation.

Further, although the washing machine frame is made of sheet metal, it constitutes a shielding member that shields the bottom open portion of the machine frame. The base and lid are made of resin having a larger sound absorption coefficient than sheet metal, and The base is provided with a standing wall to form a double wall structure, and a part of the drive source that generates noise is brought to the inside of the base, whereby the drive noise of the drive source can be considerably absorbed, and the machine frame It is possible to further suppress the drive noise of the drive source from leaking from below.

Furthermore, a groove is formed by the standing wall and the inner wall of the resin base, and a plurality of partition bodies are formed in the groove along the longitudinal direction of the groove.
The drive noises that have entered the concave grooves are diffusely reflected by the partition bodies and cancel each other out, and in this respect also, the leakage of drive noises can be suppressed.

Furthermore, since the lid can be inserted and removed from the front side, the lid can be easily inserted and removed even after the washing machine is installed.

Furthermore, since the base and the lid, which form the shielding member that covers the bottom opening of the machine frame, are located below the machine frame, the lower end of this machine frame can be kept away from the floor surface of the washing machine. Even if a washing machine is installed in a bathroom, it is possible to considerably suppress the generation of rust due to water splashing at the lower end of the machine frame. And, in the base and the lid that constitute the shielding member,
Since it is made of resin rather than metal, it does not rust in place of the machine frame.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a washing machine according to the present invention, showing a cross section of a main part, FIG. 2 is a view corresponding to FIG. 1 showing a sound insulation plate being inserted, and FIG. , Fig. 4 is a bottom view, and Fig. 5 (a).
Is a plan view of the sound insulation plate, FIG.
FIG. 7 is a front view of the control box, and FIGS. 7 to 11 are views corresponding to FIG. 5B showing different embodiments. (1) …… Main body, (3) …… Resin base (shielding member),
(4) …… Outer laundry tub, (14) …… Opening, (18) …… Sound insulation board (lid), (29) …… Packing material, (30) …… Urethane foam, (31) (32) …… Molded felt, (34) …… Foam layer, (35) …… Elastic material ((30) (31) (32) (34) (3
5): Sound absorbing material).

Claims (1)

[Claims] 1. A washing machine frame made of sheet metal having an open bottom surface, a washing outer tub elastically supported in the machine frame, and a washing / dehydrating tub rotatably supported in the outer washing tub. And a rotary vane disposed at the bottom of the washing / dehydrating tub and an outer bottom of the washing / dehydrating tub for rotating the rotary wing during washing and high-speed operation of the washing / dehydrating tub during dewatering. A drive source for rotating and a shield member that shields the bottom opening portion of the machine frame and suppresses noise generated during the operation of the washing machine from leaking from the inside of the machine frame. A resin base located below the frame to support the machine frame, an opening formed in the bottom surface of the resin base, a guide rail formed at the edge of the opening, and a front side of the machine frame. Inserted into the resin base along the guide rail to close the opening, A removable lid made of resin, an erected wall erected along the periphery of the opening in the resin base, and the erected wall and the inner wall of the resin base around the opening. A groove formed along the groove and a plurality of partition bodies formed in the groove along the longitudinal direction of the groove, and part of the drive source reaches the resin base. A washing machine characterized by having a configuration.