JP2002011274A - Electric washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set a speaker in a moistureproof and waterproof state. SOLUTION: A speaker 46 is built in an airtight resonance box 41, and set in a side panel box 49 formed by a side panel 48 mounted on an upper cover 9 so as to cover the side part of the clothes input port 9a of the upper cover 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an electric washing machine.

[0002]

2. Description of the Related Art There has been proposed an electric washing machine which performs guidance and warning by voice. A speaker is used to generate this sound. However, since the speaker is provided with parts that dislike moisture, it is necessary to adopt a moisture-proof and waterproof structure in order to incorporate the speaker into an electric washing machine that handles water.

[0003] It is also desirable to be able to emit loud sounds with small speakers and sound power.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to propose a speaker mounting structure suitable for being built in an electric washing machine.

More specifically, an object of the present invention is to provide an electric washing machine which is excellent in moisture-proof and waterproof properties for electric parts located on the back side of a speaker and which can emit a loud sound using a small speaker. .

Also, an electric washing machine which can effectively utilize the original structure of the electric washing machine, has excellent moisture proof and waterproof properties, and can emit a large sound with a small sound power using a small speaker. It is to propose.

[0007]

According to the present invention, an internal mechanism is surrounded by an outer frame and an upper cover covering an upper opening of the outer frame.
An electric washing machine comprising: an electric driving device that drives the stirring blade; a speaker that generates sound; and a control device, wherein the control device controls the electric driving device and supplies audio power to the speaker. The speaker is
The upper cover is installed in a side panel box formed by a side panel mounted on the upper cover so as to cover a side portion of the clothing inlet of the upper cover.

The speaker is installed at a position close to a hook engaging hole formed on a side surface of the side panel.

Further, the speaker is installed on the upper cover in a state of being housed in the resonance box.

Further, the resonance box is characterized in that an airtight space is formed on the back side of the speaker.

[0011]

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

FIG. 1 is a vertical sectional side view of an electric washing machine showing one embodiment of the present invention. Although a fully automatic electric washing machine is illustrated here, the present invention can be applied to electric washing machines of other types.

Reference numeral 1 denotes an outer frame of the electric washing machine, which constitutes a housing surrounding the periphery of the internal mechanism. Reference numeral 2 denotes a washing / dehydrating tub provided in the outer frame 1, and a fluid balancer 3 is provided at an upper edge thereof. A stirring blade 4 is rotatably provided inside the bottom of the washing / dewatering tub 2. Reference numeral 5 denotes an outer tub, in which the washing / dewatering tub 2 and the stirring blade 4 are rotatably accommodated. An electric drive device 6 having a built-in brushless electric motor is attached to the outside of the bottom of the outer tub 5 by an attachment base 7 made of a steel plate.

The upper cover 9 having the clothes input opening 9a
Provided on the washing / dewatering tub 2. The upper cover 9 is fitted to the opening edge of the outer frame 1 so as to cover the upper opening of the frame 1, and is attached to the frame 1 together with the front panel 10 and the back panel 11 by mounting screws (not shown).

A front panel box 12 located at the front of the upper cover 9 and formed below the front panel 10.
Is an operation panel 13 having an input switch group as an operation switch and a display element group as a notifying means, an operation panel control device 14, and a water level sensor 15 for generating a water level detection signal according to the water level in the outer tub 5. To accommodate. Although not shown, the input switch group includes a switch for setting a washing course, a start switch, and a voice switch.

A back panel box 16 is provided below the back panel 11 at the rear of the upper cover 9. The back panel box 16 houses a water supply solenoid valve 19 that connects the water inlet side to the water supply port 17 and connects the water outlet side to the water inlet 18. The water inlet 18 is formed so as to discharge water toward the opening of the washing / dewatering tub 2. The back panel box 16 further includes a pump (not shown) for supplying water such as bath water to the washing / dewatering tub 2 via a pump, if necessary, and a water supply from the water supply solenoid valve 19. A filter device (not shown) for removing metal ions from water and supplying it to the water inlet 18 is installed.

A clothing input opening 9a formed in the upper cover 9.
Has a structure in which it can be freely opened and closed by a lid 20.

A drain port 5 a formed at the bottom of the outer tub 5 is connected to a drain hose 22 via a drain solenoid valve 21.
Further, an air trap 5b is provided below the outer tank 5, and the air trap 5b is connected to the water level sensor 15 via an air tube 23 to detect a water level in the outer tank 5.

Below the frame 1, a synthetic resin base 25 having legs 24 attached to the four corners is mounted.

The electric drive unit 6 is covered with a cover 26 for waterproofing. The electric driving device 6 includes a brushless electric motor having excellent controllability as a driving electric motor, and includes a clutch mechanism for selectively transmitting rotation of the brushless electric motor to the washing / dewatering tub 2 and / or the stirring blade 4. The power supply to the brushless motor is performed by a power control device 27 including an inverter circuit. This power control device 27
Executes the power supply to the brushless motor, the control processing of the auxiliary machine, and the control processing of the voice notification in accordance with the instruction from the operation panel control device 14. The power supply to the brushless motor is controlled by PWM (pulse width modulation) control and PAM (pulse voltage modulation) control.

The power control device 27 is mounted on a mounting portion 25a formed on the base 25 so as to be located below the outer tank 5.

FIG. 2 shows the control devices 14 and 27 of the electric washing machine.
FIG. 3 is a block diagram showing an internal configuration of the device.

The operation panel control device 14 mainly includes a microcomputer 30 having a communication function, detects an input from an input switch group 31 provided on the operation panel 13 and transmits the input to a power control device 27. A control process of turning on / off the display element group 32 and outputting a buzzer sound signal to the buzzer terminal 33 indicating reception of a switch input or occurrence of an error state is executed.

The power control device 27 includes a DC voltage generation circuit 35, a DC voltage control control circuit 36, an inverter circuit 37, an inverter drive circuit 38, and a water supply solenoid valve coil for controlling power supply to the brushless motor 34 of the electric drive device 6. 19a, a drain solenoid valve coil 21a, an auxiliary device drive circuit 40 for intermittently supplying power to the clutch coil 39a of the clutch mechanism 39 of the electric drive device 6, and a microcomputer 41 for controlling these. Microcomputer 41
Is the microcomputer 3 of the operation panel control device 14.
0 to control the DC voltage control circuit 36, the inverter drive circuit 38, and the auxiliary equipment drive circuit 40 in accordance with the set steps to control the washing and dehydration steps and to display the progress state. An error display and a voice notification process are executed.

The accessory drive circuit 40 is provided with a water supply solenoid valve coil 1
9a, drain solenoid valve coil 21a, clutch coil 39a
The two-way thyristors 40a to 40c are connected to each other, and by selectively conducting these two-way thyristors 40a to 40c, the water supply solenoid valve 19, the drain solenoid valve 21,
The clutch mechanism 39 is driven.

The microcomputer 41 sets the washing and dehydrating steps according to the instruction input from the input switch group 31 via the microcomputer 30, and displays the set state, the step progress state, and the error state via the microcomputer 30. The element group 32 is turned on and displayed, and the auxiliary device drive circuit 40 is opened and closed so as to open and close the water supply electromagnetic valve 19 and the drain electromagnetic valve 21 while monitoring the water level in the outer tub 5 by inputting the detection signal of the water level sensor 15. Control, and further monitors the signals of various sensors (not shown) to detect the occurrence of an error condition. When an error occurs, the generated error condition is grasped, the washing and dehydrating steps are stopped, and the error condition is detected. Is stored, and the occurrence of the error state is notified by the display element group 32 and the buzzer sound. Then, when there is an instruction input from a voice switch (not shown) provided in the input switch group 31, a control process for performing voice notification of the stored error state (error content) and the corresponding method is performed.

This sound notification (means) is to store error state sound data corresponding to various error states (error contents) and corresponding method sound data in the sound ROM 42 in advance, and when a sound switch is inputted, The error state sound data corresponding to the detected and stored error state and the corresponding method sound data are selected from the sound ROM 42, sequentially read out, supplied to a D / A conversion circuit 43, and converted into an analog signal. This is performed by executing a control process of supplying a waveform to the speaker 46 via the amplifier circuit 45 after shaping the waveform through the low-pass filter 44. The low-pass filter 44 receives a switch input from the buzzer terminal 33 of the microcomputer 30 of the operation panel control device 14 and inputs a buzzer sound signal indicating an error state to form a waveform. It is supplied to 46 to make it sound.

As shown in FIG. 6, a speaker 46 for generating sound is built in a resonance box 47, and as shown in FIGS. 3 and 4, a garment insertion port 9a formed in the upper cover 9 is provided. It is installed in a side panel box 49 formed inside a side panel 48 attached so as to cover the side portion.

As shown in FIG. 6, the resonance box 47 has a sound emission hole 47a on the front surface thereof facing the diaphragm of the speaker 46.
A front box 47b having a rear surface opened, and a rear box 47d having a front surface opened and a speaker holder 47c standing inside the rear surface.
It is constituted by. The front box 47b and the rear box 47d
Is formed by molding with a synthetic resin. Then, the front box 47 is set so that the diaphragm faces the sound emission hole 47a.
b, the speaker 49 is in contact with the inside of the front surface of the front box 4.
The rear box 47d is fitted to and joined to the front box 47b from behind the 7b to assemble the speaker 46 from the rear by the speaker holder 47c. The audio power is supplied to the speaker 46 by an audio power supply line 50 provided to penetrate the rear surface of the rear box 47d in an airtight state.
To do it.

The electric components such as the voice coil and the power supply terminal located behind the speaker 46 built in the resonance box 47 are formed by fitting the front box 47b and the rear box 47d together. Since it is located in a relatively airtight space, it is possible to realize moisture proof and water proof. The danger of the adhesion of water droplets generated by dew condensation of the water contained in the air in the space of the resonance box 47 is caused by forming a rib on the inner wall surface of the resonance box 47 or processing a wrinkled surface. This can be reduced by suppressing dew condensation near electric components such as a voice coil and a power supply terminal.

The resonance box 4 having the built-in speaker 46
7 is mounted on the upper cover 9 so as to fit in the side panel box 49. This mounting is performed by screwing a mounting flange 47e formed on the resonance box 47 to a mounting seat formed on the upper cover 9. Normally, the side panel box 49 is used as a space for installing a part of the control device, but in this embodiment, the control device is divided into the operation panel control device 14 and the power control device 27 and the power By arranging the control device 27 in a large space below the outer tub 5, the side panel box 49 is emptied to facilitate installation of the resonance box 47.

Generally, a hook engaging hole 48a for hooking a hook when storing a drain hose or a water absorption hose of a bath water pump is opened in a vertical side surface of the side panel 48 as shown in FIG. This hook locking hole 48a
Is covered by an eave 48b that opens downward. Resonance box 4 to increase the sound emitted outside the aircraft
7 as much as possible with the hook locking hole 48a.
To be located close to

According to such an electric washing machine, the speaker 46 can be installed by effectively utilizing the side panel box 49 on the upper cover 9 in a moisture-proof and waterproof form by the resonance box 47.

Further, the generated sound is transmitted to the side panel 48.
The hole can be efficiently discharged out of the machine from the hook locking hole 48a formed in the above.

[0035]

According to the present invention, the speaker is accommodated in a side panel box formed by a side panel attached to the upper cover so as to cover the side of the clothing inlet of the upper cover which covers the upper opening of the outer frame. This facilitates the installation of the speaker.

Further, since the speaker is built in the resonance box to form an airtight space on the back side of the speaker, a small-sized speaker having excellent moisture proof and waterproof properties against electric parts which dislike moisture is provided. Can be used to generate loud sounds.

Further, since the speaker is installed near the hook engaging hole formed on the side panel, a large sound can be emitted with a small sound power using a small speaker.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of an electric washing machine according to an embodiment of the present invention.

FIG. 2 is a block diagram of an electric system of the electric washing machine shown in FIG.

FIG. 3 is a perspective view of the electric washing machine showing a speaker mounted state with a part cut away.

FIG. 4 is a perspective view of an upper cover showing a state in which a speaker is attached by disassembling a side panel.

FIG. 5 is an enlarged perspective view showing a side panel portion of the electric washing machine.

FIG. 6 is an exploded perspective view of a speaker and a resonance box.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Outer frame, 9 ... Top cover, 9a ... Clothes slot, 14 ... Operation panel control device, 27 ... Power control device, 46 ... Speaker, 47 ... Resonance box, 48 ... Side panel, 48a ... Hook locking hole, 49 ... Side panel box.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Naoki Hattori 1-1-1, Higashitagacho, Hitachi City, Ibaraki Prefecture F-term within Hitachi Taga Electronics Co., Ltd. 3B155 AA10 BA27 BB02 CA06 CB06 DA02 JA02 JA03 JB04 JB06 JB18 JB27 MA01 MA02 5D017 AB03

Claims (4)

[Claims] An electric drive device for driving an agitating blade by surrounding an internal mechanism by an outer frame and an upper cover covering an upper opening of the outer frame; a speaker for generating sound; and a control device. An electric washing machine that controls an electric drive device and supplies audio power to the speaker, wherein the speaker is mounted on the upper cover so as to cover a side of a clothing slot of the upper cover. An electric washing machine installed in a side panel box formed by panels. 2. The electric washing machine according to claim 1, wherein the speaker is installed at a position near a hook engaging hole formed on a side surface of the side panel. 3. The electric washing machine according to claim 1, wherein the speaker is installed in an upper cover while being housed in a resonance box. 4. The electric washing machine according to claim 3, wherein the resonance box forms an airtight space behind the speaker.