JP2001170389A - Drum type washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drum type washing machine constituted to reduce the transmission of vibration to a floor face without making a washing machine body large-sized. SOLUTION: This drum type washing machine is provided with a body outer part 1 having a washing inlet opening 1a opened to a front face; a water tank 4 of bottomed cylinder shape disposed inside the body outer part 1 and having an opening part 4a opened facing an opposed part to the washing inlet opening 1a; a packing 10 formed of an elastic body for connecting the washing inlet opening 1a to the opening part 4a so as to form a passage; a drum 5 rotatably supported in the water tank 4; a drive mechanism 9 for rotatory-driving the drum 5: suspension devices 7a, 7b for suspending the water tank 4 swingingly, and a front damping device 8a for supporting the front part of the water tank 4 to damp the front swing of the water tank 4. The rear part of the water tank 4 is supported by the suspension device 7b, and the water tank 4 is not supported from below.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a drum type washing machine having a horizontal drum which rotates about a substantially horizontal axis.

[0002]

2. Description of the Related Art A drum type washing machine having a horizontal drum rotating about a substantially horizontal axis is widely used, particularly in Europe. In general, a drum type washing machine has been commercialized which performs a washing operation including a washing step in which a drum rotates at a low speed, a rinsing step, and a dehydration step in which the drum rotates at a high speed, and further performs a drying step.

FIGS. 21 to 23 show a conventional drum-type washing machine. FIG. 21 is a side sectional view, and FIGS. 22 and 23 are a side sectional view and a front sectional view showing a suspended state of a water tub. As shown in these figures, a main body exterior part 51 is provided with a laundry input opening 51a which is opened and closed by an opening / closing door 53 on the front surface. A water tank 54 having an opening 54a on the front surface is provided inside the main body exterior part 51. A drum 55 is rotatably supported about a shaft 56 in the water tank 54 to form a double structure.

[0004] A laundry input port 51 provided in a body exterior part 51.
The periphery of a and the periphery of the opening 54a are connected by a packing 60 made of rubber or the like so as to prevent water leakage between the body exterior part 51 and the water tank 54. A drive mechanism 59 for rotating and driving the shaft portion 56 is disposed behind the water tank 54.

[0005] The upper portion of the water tank 54 is suspended from the main body exterior part 51 by suspension devices 57 and 58 comprising two tension springs each for the front and rear. The lower portion of the water tank 54 is supported from below by two dampers 62 and 63 for each of the front and rear. Thereby, the water tank 54 is configured to be elastically supported inside the main body exterior part 51.

The washing, rinsing, spin-drying and drying steps are performed by rotating the drum 55 with a drive mechanism 59. At this time, the laundry is eccentric by centrifugal force and
Swinging occurs. The suspension devices 57 and 58 function to return the displaced water tank 54 to a predetermined position, whereby the water tank 54 swings, and the dampers 62 and 63 function to attenuate the swing of the water tank 54.

[0007]

In the above-mentioned conventional drum type washing machine, the suspension devices 57, 58 and the dampers 62, 6 are used.
Reference numeral 3 denotes a spring constant and a damping coefficient that are set so that the rocking of the water tank 54 is within a range in which the packing 60 can bend. The bellows portion is provided on the packing 60 for the front and rear swinging of the water tank 54 (in the direction in which the distance between the open / close door 53 and the water tank 54 changes) to follow a relatively large range by expansion and contraction of the bellows portion. Becomes possible.

On the other hand, in order for the packing 60 to follow the vertical swinging of the water tank 54, the bellows portion needs to be enlarged, so that the space between the main body exterior part 51 and the water tank 54 becomes large. Therefore, there is a problem that the drum type washing machine is made large. Therefore, the damper 62 having a large damping coefficient,
By using 63 to greatly attenuate the vertical swing of the water tub 54, a small drum type washing machine using a small packing 60 can be obtained.

However, a damper having a large damping coefficient easily transmits vibrations, and large vibrations are transmitted to the floor via the dampers 62 and 63, thereby causing a problem that the living environment is deteriorated.

It is an object of the present invention to provide a drum type washing machine capable of reducing vibration transmission to the floor without increasing the size of the washing machine body.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a main body exterior part having a laundry input port opened at the front, a main body exterior part disposed inside the main body exterior section and having the laundry input port provided therein. A bottomed cylindrical water tub having an opening facing the opposing portion, a packing made of an elastic body connected to form a passage between the laundry inlet and the opening, and A drum rotatably supported in the water tank, a drive mechanism for rotating and driving the drum, a suspension device for swingably suspending the water tank, and a front part of the water tank supporting the front part of the water tank. And a forward damping device for damping the swing, wherein the forward damping device supports the front of the center of gravity of the rocking body, which constitutes the total weight suspended by the suspension device, so as to reduce the amplitude of the resonance point of the drum type washing machine. It is characterized by being attenuated It is.

According to this configuration, the laundry is loaded into the drum disposed in the water tub from the laundry loading opening and the opening on the front. The washing liquid is poured into the water tub, and the drum is rotated by the drive mechanism to perform washing. The water tank and the exterior of the main body are connected by packing to prevent water leakage. By the rotation of the drum, the water tank is swung by the suspension device so as to return to the original position. The forward damping device
Supports the rocking body consisting of the water tank, drum, drive mechanism, etc., which constitutes the total weight suspended by the suspension device, ahead of the center of gravity, and attenuates the oscillation of the water tank to attenuate the amplitude of the resonance point of the drum type washing machine. Let it.

[0013] The present invention further provides a main body exterior part having a laundry input port opened on the front surface, and an opening disposed in the main body exterior section and facing the portion facing the laundry input port. A bottomed cylindrical water tub having, packing made of an elastic body that connects the laundry loading port and the opening to form a passage, and a drum rotatably supported in the water tub, A drive mechanism for rotating and driving the drum, a suspension device for swingably suspending the water tank, and a forward damping device for supporting the water tank and attenuating the swing of the front portion of the water tank, the water tank includes: A packing mounting portion to which the packing is mounted, wherein the front damping device supports the packing mounting portion and the front damping device in front of a center of gravity of a rocking body constituting a total weight suspended by the suspension device; Features To have.

According to this configuration, the water tank swings up and down around the portion supported by the front damping device, and
The swing of the packing mounting portion to which the packing is mounted is smaller than the swing of the center of gravity of the rocking body including the water tank, the drum, the driving mechanism, and the like.

[0015] The present invention also provides a main body exterior part having a laundry input port opened on the front surface, and an opening disposed in the main body exterior part and facing the portion facing the laundry input port. A bottomed cylindrical water tub having, packing made of an elastic body that connects the laundry loading port and the opening to form a passage, and a drum rotatably supported in the water tub, A drive mechanism that rotationally drives the drum, a suspension device that swingably suspends the water tank, and a front damping device that supports a front part of the water tank and attenuates the swing of the front part of the water tank, The rear part of the water tank is supported only by the suspension device.

According to this configuration, the front and rear portions of the water tank are swung by the rotation of the drum so as to return to the original positions by the suspension device. The front damping device supports the front of the aquarium and attenuates the swing of the front of the aquarium. In the back of the aquarium,
Since there is no separate damping mechanism for supporting the water tank from below, the vibration caused by the swing of the rear part of the water tank is not directly transmitted to the lower part.

Further, the present invention provides the drum type washing machine having the above-mentioned configuration, wherein the suspension device has a damping portion for supporting a rear portion of the water tub from above and damping a swing of the rear portion of the water tub. I have. According to this configuration, the front damping device supports the front of the water tank and attenuates the swing of the front of the water tank. The swing of the rear part of the water tank is damped by the damping part of the suspension device, and the vibration accompanying the damping is transmitted to the floor surface via the suspension device and the body exterior part, and this vibration is partially absorbed by the exterior and is vibrated to the floor. Transmission is eased.

[0018] The present invention further provides a main body exterior part having a laundry input port opened on the front face, and an opening arranged in the main body exterior part and facing the portion facing the laundry input port. A bottomed cylindrical water tub having, packing made of an elastic body that connects the laundry loading port and the opening to form a passage, and a drum rotatably supported in the water tub, A drive mechanism that rotationally drives the drum, a suspension device that swingably suspends the water tank, a front damping device that supports a front part of the water tank and attenuates the swing of the front part of the water tank, A damping device having a damping coefficient smaller than that of the damping device and a rear damping device for supporting a rear portion of the water tank from below to attenuate swinging of the rear portion of the water tank.

According to this configuration, the front damping device supports the front portion of the water tank and attenuates the swing of the front portion of the water tank. Oscillations at the rear of the water tank are attenuated more gradually than at the front by a rear damping device having a small damping coefficient, so that vibration transmission to the floor is alleviated.

[0020] In the drum-type washing machine having the above-mentioned structure, the front damping device may include one damper for supporting the water tank from below, and the damper may be placed on a vertical line passing through the center of the opening. It is characterized by being arranged.

Further, the present invention is characterized in that, in the drum type washing machine of each of the above structures, the front damping device is rotatably attached to the water tub when viewed from the front of the water tub. According to this configuration, the horizontal damping of the water tank is not restricted by the front damping device, and the packing freely swings in the horizontal direction.

Further, the present invention is characterized in that in the drum type washing machine of each of the above constitutions, the front of the water tub is supported by the front damping device.

Further, the present invention is characterized in that, in the drum type washing machine of each of the above structures, a weight member having a large mass is provided at a front portion of the water tub. According to this configuration,
Vibration can be reduced by increasing the weight of the front part of the water tank, and the occurrence of vibration can be reduced.

The present invention also relates to the drum type washing machine having the above-mentioned configuration, wherein the water tub comprises a front water tub and a rear water tub which are divided into front and rear, and an attachment portion for attaching the front damping device to the front water tub is integrally formed. It is characterized by being formed.

According to the present invention, in the drum-type washing machine having the above-mentioned structure, a connecting portion for connecting the front water tub and the rear water tub is provided on an end surface of the front tub and the rear tub, and the front damping member is provided at the connecting portion. It is characterized in that a mounting portion of the device is formed.

Further, the present invention is characterized in that, in the drum type washing machine of each of the above structures, the packing is made of rubber or soft resin having a rubber hardness of 35 degrees or less.

[0027]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view of a drum-type washing machine according to a first embodiment of the present invention. The body exterior 1 forming the outer wall of the drum type washing machine can be opened and closed at the front with an opening / closing door 3. An operation panel 11 provided with operation keys and a display unit is provided on an upper part of the front surface of the main body exterior unit 1.

FIG. 2 is a side sectional view of the drum type washing machine. A bottomed cylindrical water tank 4 having an opening 4a on the front surface is disposed in the main body exterior part 1. As will be described later in detail, the water tank 4 is elastically supported by the first suspension device 7a and the second suspension device 7b in the main body exterior part 1 as shown in FIGS. Further, the swing of the water tank 4 is attenuated by the damper 8.

A drum 5 is provided in the water tank 4. The drum 5 is fixed to the shaft 5e, and the motor case 9a
The shaft portion 5e is attached to the bearing 6 integrated with the water tank 4 through the shaft.
Are supported and are rotatable. A rotor 9b is fixed to the shaft 5e, and a stator 9c is fixed in the motor case 9a. Thus, a driving mechanism 9 for driving the drum 5 is configured.

A small hole 5a is provided on the entire peripheral wall of the drum 5. The small holes 5a allow the washing water to flow between the water tub 4 and the drum 5 during washing. A baffle 5b is provided on the inner wall surface of the drum 5 so as to protrude therefrom. The laundry is hooked and lifted by the rotation of the drum 5, and the washing is performed by dropping the laundry into the washing liquid.

A fluid balancer 5d is provided on the outer peripheral edge of the opening 5c on the front surface of the drum 5. The fluid balancer 5d is filled with a fluid such as salt water, and the fluid moves when the drum 5 rotates, thereby canceling the shift of the center of gravity due to the offset of the laundry and the washing liquid. Fluid balancer 5
d may be provided on the inner peripheral edge of the drum 5.

The rotation axis y-y of the drum 5 is inclined such that the depth of the drum 5 is lowered by an angle θ with respect to the horizontal axis. Thus, when the user stands and operates the drum-type washing machine while standing on the front side, the user can look down to the inside of the drum 5 and have a better view.

A packing 1 made of an elastic material such as rubber or soft resin is provided on the periphery of the laundry inlet 1a and the opening 4a of the water tub 4.
0 are mounted to form a passage. The packing 10 has a structure in which the inner peripheral edge 10 a is in close contact with the peripheral edge of the door 3 when the door 3 is closed. Thereby, waterproofing during the washing operation is performed. Further, a bellows or the like is provided on the packing 10 so that the packing 10 bends in accordance with the swing of the water tank 4 and follows the tank.

A water supply pipe 12 connected to a water pipe is provided in the upper part of the exterior body 1. When the water supply valve 13 provided in the middle of the water supply pipe 12 is opened, the detergent case 14 is opened.
The water is supplied into the water tank 4 from a water supply nozzle 15 attached to the door packing 10 via the.

The drain duct 1 led out from the bottom of the water tank 4
Reference numeral 6 includes a connection case 17 having a waste thread filter 17a provided in the middle of the pipeline and a drainage pump 18, and configured to drain the washing liquid from the water tub 4 to the outside of the main body exterior part 1. The lint filter 17a is formed by, for example, forming a lattice of resin, or by forming fine fibers in a bag shape, and accumulating lint and the like in the washing liquid. The lint filter 17a is detachably mounted in the connection case 17, and can be removed from the lower front part of the main body exterior part 1.

A water level sensor 23 is provided above the connection case 17 from the air trap 22 via a pressure guiding pipe 21. The water level sensor 23 is connected to the air trap 2
The magnetic body is moved within the coil according to the pressure change in the coil. The resulting change in inductance of the coil is detected as a change in oscillation frequency, and the water level in the water tank 4 is detected.

FIG. 3 shows a side sectional view of the drum type washing machine different from FIG. 2, and a circulation duct 19 branching from a drain duct 16b is provided at the outlet side of the connection case 17.
The circulation duct 19 is connected to the packing 10 so as to face the opening 4 a of the water tank 4.
It has.

When the drain pump 18 is stopped and the circulation pump 20 is driven, the water tank 4, the drain duct 16a,
A circulation path to the water tank 4 through the connection case 17, the drain duct 16b, the circulation pump 20, and the circulation duct 19 is formed. As a result, the washing liquid in the water tub 4 is circulated through the circulation path, the detergent in the washing liquid is sufficiently dissolved while passing through the circulation path, and the lint filter 17a is used.
To remove lint and the like. Therefore, it is possible to prevent the lint from re-adhering to the laundry.

FIG. 4 shows a further different side cross section. Above the water tub 4, a drying unit 24 for drying laundry, which is constituted by a blower fan 25 and a heater 26, is provided. The drying unit 24 is disposed in the middle of the path of the cooling duct 27 that connects the outlet 4b facing the opening 4a of the water tank 4 and the circulation port 4c provided below. Further, cooling means (not shown) is provided in the cooling duct 27.

In the above configuration, the control device 2 for controlling the operation of the drum type washing machine is arranged on the back of the operation panel 11, and executes the operation chart shown in FIG. The washing operation will be described below with reference to FIG.
When the laundry is thrown in from the laundry inlet 1a and the door 3 is closed, the inner peripheral edge 10a of the packing 10 is brought into close contact with the peripheral edge of the door 3, and the water tub 4 is sealed. And the detergent case 14
When the operation panel 11 is operated by putting a detergent into the
The washing operation is started according to the instruction from.

First, in the water supply operation of the "washing process", the opening / closing door 3 is locked and the water supply valve 13 is opened. Based on the opening of the water supply valve 13, the tap water is supplied on the way to the detergent case 1.
4 flows into the water tank 4 and the drum 5 together with the detergent from the water supply nozzle 15. When the water level in the water tank 4 reaches a predetermined water level, the water level sensor 23 detects the water level and the water supply valve 1 is detected.
3 is closed, the drive mechanism 9 is driven, the drum 5 is washed and the rotation is controlled by the chart, and the washing operation is performed for a predetermined time.

The rotation of the drum 5 is set in a washing, rinsing, spin-drying and drying process, or a rotation chart according to the type of laundry, and a rotation chart in which the reversal time and the reversal cycle are changed. Or automatically selected.

When the "washing step" is completed, the process proceeds to a "rinsing step" in which the rinsing dehydration operation and the stirring rinsing operation are alternately repeated a plurality of times. In the “rinsing step”, first, the drainage pump 18 is operated to supply the washing liquid to the drainage duct 1.
6. A draining operation of draining water to the outside of the main body exterior part 1 via the connection case 17 is performed. When the drainage operation is completed, the drum 5 rotates in the first dehydration chart, and the rinse dehydration operation is performed. The washing liquid of the laundry is discharged to the inner wall of the water tub 4 through the small holes 5a provided on the entire peripheral wall of the drum 5 by the centrifugal force generated by the spinning rotation. The washing liquid flowing down to the lower part of the water tub 4 along the inner wall is drained to the outside from the drain duct 16.

During this rinsing and dewatering operation, the water supply valve 13 may be opened and tap water may be injected from the water supply nozzle 15 into the water tank 4. By doing so, the tap water can permeate the laundry by centrifugal force, and the detergent remaining on the laundry can be efficiently removed. The first dehydration chart is a chart suitable for dehydrating a washing liquid containing a large amount of detergent by stopping the rotation of the drum or changing the rotation speed.

When the rinse dehydration operation is completed, a water supply operation is performed, the drain pump 18 is stopped, and the water supply valve 13 is opened again. When the water level in the water tank 4 reaches a predetermined level with the opening of the water supply valve 13, the water supply valve 13 is closed, and the driving mechanism 9 drives the drum 5 to rotate according to the rinse chart, thereby performing the stirring rinse operation.

During the stirring and rinsing operation, a soft finish agent storage box (not shown) and a rinse water supply path communicating with the soft finish agent storage box may be separately provided, and water may be supplied from the rinse water supply route together with the soft finish agent. Further, the circulation pump 20 may be driven during the washing operation or the stirring and rinsing operation to circulate the washing liquid in the water tub 4.

When the rinsing step is completed by repeating the above rinsing and dewatering operations and the stirring rinsing operation several times, the program switches to the dehydrating step. In the dehydration process, first, the water supply valve 13
Is closed and the drain pump 18 is operated to drain the washing liquid to the outside.

Then, the drum 5 is rotated in the second dehydration chart to perform the finish dehydration operation. In the finish spin-drying operation, the washing liquid is discharged to the inner wall of the water tub 4 through the small holes 5a formed in the entire peripheral wall of the drum 5 by centrifugal force generated by spin-drying. Thereafter, the washing liquid flows down the inner wall of the water tub 4 to the lower part, and is drained to the outside from the drain duct 16.

When the dehydrating step is completed, the drum 5 is rotated in accordance with the drying chart, and the blowing fan 25 and the heater 2 are rotated.
6 is driven to execute the drying step. The air in the drum 5 passes through the small hole 5a of the drum 5, the circulation port 4c of the water tank 4, the cooling duct 27, the blower fan 25, the heater 26, and circulates into the drum 5 from the outlet 4b.

The air having absorbed the moisture of the laundry in the drum 5 is sucked into the cooling duct 27 by the blower fan 25. The air passes through the cooling duct 27 while passing through the cooling duct 27.
The temperature is lowered by cooling by a cooling means (not shown) provided in 7. As a result, the air in the cooling duct 27 is dehumidified by the dew condensation of the water, and becomes low humidity air to reach the heater 26.

The air heated by the heater 26 becomes hot air and is blown into the water tub 4 from the outlet 4b, and comes into contact with the laundry again to absorb moisture. It is again sucked into the cooling duct 27 from the circulation port 4a, and is similarly cooled and dehumidified by the cooler. By repeating this operation, the drying step is performed.

Then, the humidity or temperature in the drum 5 is detected by a humidity sensor or a temperature sensor (not shown), and when a predetermined value is obtained, the drying process is completed. The water condensed by the dehumidification in this drying step descends in the cooling duct 27 and is discharged to the outside from the circulation port 4c through the drain duct 16.

As described above, based on the input from the operation panel 11, the control device 2 executes the respective steps of washing, rinsing, dehydrating and drying continuously or independently according to the set conditions.

FIGS. 6 to 8 are a side view, a front view and a rear view, respectively, showing a suspended state of the water tub 4 of the drum type washing machine of this embodiment. The water tank 4 is a front water tank 41 having an opening 4a.
After the drive mechanism 9 is mounted, the drive mechanism 9 is divided into a water tank 42 and formed by resin molding. Thereby, the water tank 4 can be easily formed. The front water tank 41 and the rear water tank 42 are provided with a center of gravity W1 of an oscillator 100 described later.
It is preferable to divide the front part from a middle point between the packing mounting part 4d where the packing 10 is mounted and the packing mounting part 4d. FIG. 9 shows the details of the joint with the front water tank 41.
Are formed with connecting portions 41b and 42b which protrude radially from the body portions 41a and 42a in a flange shape.

A seal member 44 made of an elastic material such as rubber or resin is fitted on the joint 42b, and a protrusion 41c is provided on the joint 41b. By fastening the connecting portions 41b and 42b of the front water tank 41 and the rear water tank 42 with the screws 45, the seal member 44 is pressed by the protrusions 41c, so that water leakage is prevented.

As shown in FIGS. 7 and 8, an angle 29a is attached to the inner wall of the main body exterior part 1 at the front upper part of the water tank 4, and an angle 29b is attached to the upper part of the back wall of the main body exterior part 1. I have. Angles 30a and 30b are fixed to the front and back of the water tank 4. And angle 2
A first suspension device 7a composed of a tension spring is hung on the 9a and the angle 30a, and the front part of the water tank 4 is suspended at two places on the left and right by the first suspension device 7a.

Similarly, the angle 29b and the angle 30b
A second suspension device 7b composed of a tension spring is attached to the water tank 4, and the rear portion of the water tank 4 is suspended at two places on the left and right by the second suspension device 7b. The water tank 4, the drum 5, the driving device 9 and the like are integrally suspended by the first and second suspension devices 7a and 7b, and constitute a rocking body 100 that rocks integrally by the rotation of the drum 5. The angles 30a and 30b may be formed integrally with the water tank 4.

The first and second suspension devices 7a and 7b are:
They are mounted symmetrically at right and left angles θ1 and θ2 with respect to the vertical direction. Thereby, the rocking body (the water tank 4, the drum 5, the driving mechanism 9, and the like) can be centered on the rocking in the left-right direction.

The water tank 4 is supported on the bottom of the outer casing 1 by dampers 8 (8a, 8b). Dampers 8a (front damping devices) are attached to the front water tank 41 at two places on the left and right, and support the front of the water tank 4 from below. Dampers 8b (rear attenuators) are attached to the rear water tank 42 at two places on the left and right, and support the rear of the water tank 4 from below.

A cushioning member 105 made of felt, rubber, or the like is fixed to a portion of the back wall of the outer casing 1 facing the rearmost portion of the rocking body 100. Thereby, when the water tank 4 (oscillating body 100) swings in the front-back direction, generation of noise due to collision between the water tank 4 and the back wall of the main body exterior unit 1 is prevented. Weights 101 and 102 having a large mass made of metal are attached to the lower front and lower rear portions of the water tank 4.

FIG. 10 is a sectional view showing the damper 8.
The damper 8 has a piston 83 that slides on the inner wall of the cylinder 82 with resistance. The piston 83 is attached to the lower end of the rod 81, and moves up and down according to the swing of the water tank 4.

At the upper end of the rod 81, a hollow hook portion 81 is provided.
a is formed, and a bush 85 made of an elastic material such as rubber or resin is embedded in the inner periphery of the hook portion 81a. Inside the push 85, there is a sleeve 8 made of hard resin or metal.
4 are provided. Similarly, a hook 82 a is formed at the lower end of the cylinder 82, and a bush 85 and a sleeve 84 are provided.

The piston 83 is provided with one or a plurality of seals 83a made of an elastic material such as rubber or resin around the piston 83. The seal body 83a is slidable with resistance to the inner wall of the cylinder 83, and the vertical movement of the rod 81 can be attenuated by the resistance at the time of sliding. By varying the sliding resistance of the sliding piston 83, it is possible to freely create dampers having different damping coefficients.

The cylinder 82 may be hermetically sealed by filling a liquid such as air or oil in the cylinder chamber 82b below the piston 83. In this way, the sealed fluid is compressed and expanded with the vertical swing of the rod 81,
Swing can be attenuated. At this time, a hole (not shown) communicating with the cylinder chamber 82c above the piston 83 is provided.
It is possible to freely create dampers having different damping coefficients.

As shown in FIG. 9 described above, a bolt 86 is inserted through a sleeve 84 into a hook portion 81 a of a rod 81.
The front water tank 41 is fixed to a mounting portion 46 that is integrally provided so as to protrude from the body portion 41a. A bolt 87 is inserted through a sleeve 84 of the hook portion 82 a of the cylinder 82, and is fixed by a nut 88 to a mounting portion 47 protruding from the bottom wall 1 a of the main body exterior portion 1 and integrally provided. Thereby, the front part of the water tank 4 is moved by the damper 8a to the main body exterior part 1.
It is connected and supported. The mounting posture of the damper 8a may be upside down. Also, the mounting portion 47 is attached to the bottom
And may be fixed separately to the bottom wall 1a. With the same configuration, the rear part of the water tank 4 is connected to and supported by the body exterior part 1 by the damper 8b.

The shafts of the bolts 86 and 87 are
Has a step portion 86a, 87a longer than the width D. As a result, the sleeve 84 can freely rotate the cut portions 86a and 87a. Therefore, the damper 8a,
8b swings following the swinging of the water tank 4 in the left-right direction (the direction perpendicular to the paper surface).

Also, the bearing surfaces 86b, 8 of the bolts 86, 87
The diameters of the seat surfaces 46 a and 47 a of the mounting member 46 and the mounting portions 46 and 47 are smaller than the outer diameter of the bush 85. Thereby, the front-back direction of the water tank 4 (arrow B direction)
Can be absorbed by the elastic force of the bush 85 to attenuate the oscillation.

According to the above-described suspension method, when the drum 5 rotates in the dehydration step or the like, the suspension devices 7a and 7b expand and contract, and the water tank 4 swings. The water tank 4 is made up of a packing 10 and a body exterior part 1.
The rocking of the water tank 4 causes the packing 10 to expand and contract. When the water tank 4 swings freely within the exterior body 1, vibration is not transmitted to the floor, but the packing 10 has an elastic limit and an allowable range in terms of transmission of vibration to the floor. Since the swing amount of the water tank 4 needs to be limited within the range, the swing is attenuated by the dampers 8a and 8b. Thereby, breakage and deterioration of the packing 10 can be prevented.

In this embodiment, the front part of the water tank 4 is supported by the damper 8a, and the rear part of the water tank 4 is supported by the damper 8b. The damping coefficient of the damper 8b is smaller than the damping coefficient of the damper 8a. I have. Therefore, the damper 8 is provided at the front of the water tank 4 near the packing 10.
By a, the oscillation of the water tank 4 is attenuated to suppress the elastic deformation of the packing 10, and at the rear of the water tank 4 away from the packing 10, the water tank 4 can be swung as much as possible to reduce the vibration transmission to the floor. It has become.

As shown in FIG. 6, the oscillator 100
The center of gravity W1 exists behind the water tub 4 due to the weight of the bottom of the water tub 4 and the drum 5, the weight of the driving device 9, the weight of the washing liquid accumulated at the bottom of the inclined water tub 4, and the like. Since the damper 8a functions substantially as a fulcrum with respect to the swing of the center of gravity W1, it is better to support a position as close to the packing 10 as possible.
Swinging becomes smaller.

For this reason, it is desirable that at least the front of the center of gravity W1 be supported by the damper 8a. Further, as shown in the figure, when the intersection of the vertical axis passing through the center of gravity W1 of the oscillating body 100 and the rotation axis yy is W1 ', the position of the packing attaching portion 4d where the packing 10 is attached to the oscillating body 100 is shown. When the front of the middle point W3 between W2 and the point W1 'is supported by the damper 8a, the swing of the packing 10 becomes smaller than the swing of the center of gravity W1. Therefore, the vibration transmitted by the damper 8a having a large damping coefficient is reduced, and in particular, the vibration at the resonance point of the main body exterior part 1 can be reduced.

The rocking body 100 (water tank 4, drum 5,
As described above, the driving mechanism 9 and the like have a centripetal function by arranging the first and second suspension devices 7a and 7b at angles of θ1 and θ2. The packing 10 will not be damaged even if the swing in the direction is not attenuated. For this reason, by attaching the dampers 8a and 8b to the water tank 4 so as to be rotatable when viewed from the front, the transmission of vibration is reduced without damping the swing in the left-right direction.

If the hardness of the packing 10 is high, the oscillation of the water tank 4 is restricted, and the vibration increases. For this reason,
The smaller the hardness of the packing 10 is, the better the rubber hardness is 35.
If it is less than the degree, the influence of the packing 10 can be reduced,
The vibration is in accordance with the damping coefficient of the damper 8a. Therefore,
The packing 10 is desirably formed of rubber or resin having a rubber hardness of 35 degrees or less.

Further, in this embodiment, since the weight 102 is provided below the center of gravity W1, the total weight of the oscillator is larger than the weight rotating in the drum 5, and the swing amount is smaller. As a result, the vibration damping function is improved, and the transmission of vibration to the floor can be reduced. Since the weight 101 is mounted near the packing 10, the acceleration of this portion is attenuated, and the transmission of vibration by the damper 8a can be further reduced.

As shown in FIGS. 11 and 12, the weight 1
01 may be attached with a damper 8a. By doing so, the damper 8a is attached to the weight 101 made of metal, so that the water tank 4 that swings back and forth and the damper 8a
The reliability of the attachment with a can be improved.

As shown in FIG. 13, a weight 101 and a damper 8a may be attached to the joints 41a and 42a between the front water tank 41 and the rear water tank 42. In this manner, the connection of the front water tank 41 and the rear water tank 42 and the attachment of the weight 101 can be simultaneously performed by the common screw 45, and the number of parts and the number of steps can be reduced.

As shown in FIG. 14, the damper 8a may be attached to the front of the water tank 4. By doing so, the damper 8a can be mounted closer to the packing 10, and the assembly can be performed from the front, so that the working efficiency is improved.

The dampers 8a, 8b are mounted by screws 86, 87 having step portions 86a, 87a (see FIG. 9).
However, the present invention is not limited to this, and as shown in FIG. Further, as shown in FIG. 15B, a retaining portion 73a that is elastically deformable in the radial direction.
The step 74 may be integrally formed with the mounting portion 47 as shown in FIG.
5 may be fixed.

Next, FIGS. 16 to 18 are a side view, a front view and a rear view, respectively, showing a suspended state of the water tub 4 of the drum type washing machine of the second embodiment. The same parts as those in the first embodiment in FIGS. 1 to 8 are denoted by the same reference numerals. The drum type washing machine of the present embodiment has a configuration in which the front center of the water tub 4 is supported by one damper 8a, and no damper is provided at the rear of the water tub 4. Other configurations are the same as those of the first embodiment.

According to the present embodiment, the swing of the front portion of the water tank 4 near the packing 10 is attenuated by the damper 8a, and the elastic deformation of the packing 10 is suppressed. Since the rear part of the water tank 4 away from the packing 10 swings freely, vibration transmission to the floor can be further reduced as compared with the first embodiment.

Further, since the damper 8a is installed so that the direction of expansion and contraction is perpendicular to the floor surface (vertical direction), the vertical swing of the water tank 4 can be attenuated more efficiently. In addition to reducing the number of parts, cost can be reduced, and a device such as a circuit can be arranged at a lower rear portion of the water tub 4 to reduce the size of the drum type washing machine.

Next, FIG. 19 is a side view showing a suspended state of the water tub 4 of the drum type washing machine of the third embodiment. FIG.
The same parts as those in the second embodiment in FIG. 18 are denoted by the same reference numerals. In the drum type washing machine of the present embodiment, the second suspension device 7c that suspends the rear of the water tub 4 is provided with an attenuation portion that attenuates the swing. Other configurations are the same as those of the second embodiment.

FIG. 20 shows the details of the second suspension device 7c of the present embodiment. The compression spring 71 arranged around the lower end of the rod 33 for suspending the water tank 4 is fixed to the lower end of the rod 33. It is contracted between a spring receiver 34 and a water tank receiver 36 fitted to an angle 35 provided on the outer wall of the water tank 4. The water tank 4 and the angle 35 may be formed integrally.

The rod 33 has a non-metallic rod receiver 3 attached to an angle 31 whose upper end is fixed to the upper inner wall of the main body exterior part 1.
2, and the lower end is disposed to penetrate the angle 35 and the water tank receiver 36, and the spring receiver 34 is fixed to the lower end as described above.

The second suspension 7c is constituted by the compression spring 71, the rod 33, the spring receiver 34, and the water tank receiver 36. Both the rod receiver 32 and the water tank receiver 36 formed of the non-metal are fitted to the angles 31 and 35 in a spherical pair, and support the rod 33 so that it can freely swing back and forth and right and left.

[0086] The water tank receiver 36 of the second suspension device 7c has a bell-shaped sleeve portion 36a having an open lower end so as to cover the compression spring 71. A sliding portion 34a on the outer periphery of the spring receiver 34 that receives the lower end of the compression spring 71 has an outer diameter substantially equal to the inner diameter of the sleeve portion 36a, and the two are fitted together to form a sealed air chamber 37 in the sleeve portion 36a. . With this configuration, when the water tank 4 moves up and down, the sleeve portion 36a moves up and down along the outer diameter of the sliding portion 34a.

The inner surface of the sleeve portion 36a and the sliding portion 3
The outer surface of 4a is provided with protection such as lubricant application and Teflon processing to improve slidability. Then, as the water tank 4 moves up and down, the air in the sealed air chamber 37b is compressed and expanded.
Therefore, the water tank 4 is formed by the sleeve portion 36a and the sliding portion 34a.
A damping portion for damping the swing of the second suspension device 7
c has a damper function.

The second suspension device 7c for suspending the rear of the water tank 4
Has a damper function, so that the damper 8a
It is arranged in front of the axial direction. As described above, since the damper function is provided so as to be symmetrical with respect to the rotation axis y-y of the drum 5 when viewed from above, the vibration of the oscillator 100 can be attenuated in a well-balanced manner. ing.

According to the present embodiment, as in the first and second embodiments, the swing of the front portion of the water tank 4 near the packing 10 is attenuated by the damper 8a, and the elastic deformation of the packing 10 is suppressed. The swing of the rear part of the water tank 4 away from the packing 10 is attenuated by the damper function of the second suspension device 7c.

Since the rear of the water tank 4 is supported from above by the second suspension device 7c, the vibration accompanying the damping of the swing is not directly transmitted to the floor but is transmitted to the floor surface through the main body exterior part 1. Therefore, a part of the vibration is absorbed by the main body exterior part 1 and the transmission of the vibration to the floor can be reduced. The damper 8a is
Since the expansion and contraction direction is set perpendicular to the floor surface (vertical direction), the vertical swing of the water tank 4 can be attenuated more efficiently.

[0091]

According to the present invention, the forward damping device supports the rocking body in front of the center of gravity, thereby preventing the packing from being damaged and attenuating the amplitude of the resonance point of the drum type washing machine to the floor surface. Vibration transmission can be reduced.
In addition, by supporting the packing mounting part of the water tank where the packing is mounted and the center of gravity of the rocking body in front of the center of the rocking body with a damping device, the rocking of the packing part is reduced, and the transmission of vibration to the floor surface is further reduced. Can be.

According to the present invention, the front part of the water tank is supported by the front damping device, and the rear part of the water tank is not supported from below, whereby the swinging of the front part of the water tank near the packing is attenuated by the front damping device. The elastic deformation of the packing is suppressed. Since the rear part of the water tank away from the packing swings freely, vibration transmission to the floor can be reduced. Further, by supporting the rear part of the water tank from above with a suspension device having a damping part, the vibration accompanying the damping of the swing is not directly transmitted to the floor, but is transmitted to the floor surface via the body exterior part.
Therefore, vibration transmission to the floor can be reduced. When the front damping device is attached to the front of the water tank, it can be made closer to the packing, the vibration can be further reduced, and the assembling work can be easily performed.

According to the present invention, the rear part of the water tank is supported from below by the rear damping device having a smaller damping coefficient than the front damping device supporting the front part of the water tank. The device can attenuate the rocking of the water tank, suppress the elastic deformation of the packing, and prevent the packing from being damaged. The rear part of the water tank away from the packing swings more than the front part because the damping coefficient of the rear damping device is smaller than that of the front damping device, so that vibration transmission to the floor can be reduced.

Further, according to the present invention, the front damping device is constituted by one damper, so that the number of parts can be reduced and the cost can be reduced. By installing the device on a vertical line, the water tank can be more efficiently moved up and down. Motion can be damped.

Further, according to the present invention, even if the rocking body arranged substantially symmetrically can freely rock the water tank in the left-right direction, the rocking can be performed by the centripetal function of the suspension device to suppress the amount of rocking, and the packing can be reduced. Since the front damping device is not damaged, the front damping device can be rotatably attached to the water tank when viewed from the front, and the water tank can be freely swung in the left-right direction to reduce vibration transmission.

Further, according to the present invention, by attaching a metal weight having a large mass near the packing,
The acceleration of this portion is damped, and the transmission of vibration by the front damping device can be further reduced.

Further, according to the present invention, the water tank is divided into a front part and a rear part, and is composed of a front water tank and a rear water tank, and a mounting part of the front damping device is integrally formed, thereby assembling the water tank and providing the front damping device. Installation can be performed easily. Also,
By providing a metal weight on the mounting portion and mounting the front damping device, the reliability of the mounting can be improved. Further, if an attachment portion is provided at the joint between the front water tank and the rear water tank, assembly becomes easier.

According to the present invention, by forming the packing from rubber or resin having a rubber hardness of 35 degrees or less,
The restriction on the swing of the packing can be relaxed, and the vibration can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a drum type washing machine according to a first embodiment of the present invention.

FIG. 2 is a side sectional view showing the drum type washing machine according to the first embodiment of the present invention.

FIG. 3 is a side sectional view of another cut surface of the drum type washing machine according to the first embodiment of the present invention.

FIG. 4 is a side sectional view of still another cut surface of the drum type washing machine according to the first embodiment of the present invention.

FIG. 5 is a chart showing a washing operation of the drum type washing machine according to the first embodiment of the present invention.

FIG. 6 is a side view showing a suspended state of the drum type washing machine according to the first embodiment of the present invention.

FIG. 7 is a front view showing a suspended state of the drum type washing machine according to the first embodiment of the present invention.

FIG. 8 is a rear view showing a suspended state of the drum type washing machine according to the first embodiment of the present invention.

FIG. 9 is a detailed view of a main part showing a mounting state of a damper of the drum type washing machine according to the first embodiment of the present invention.

FIG. 10 is a side view showing a damper of the drum type washing machine according to the first embodiment of the present invention.

FIG. 11 is a main part detailed view showing another mounting state of the damper of the drum type washing machine of the first embodiment of the present invention.

FIG. 12 is a detailed view of a main part showing still another attachment state of the damper of the drum type washing machine according to the first embodiment of the present invention.

FIG. 13 is a detailed view of a main part showing still another mounted state of the damper of the drum type washing machine according to the first embodiment of the present invention.

FIG. 14 is a detailed view of a main part showing still another attachment state of the damper of the drum type washing machine according to the first embodiment of the present invention.

FIG. 15 is a main part detailed view showing another support of the damper of the drum type washing machine of the first embodiment of the present invention.

FIG. 16 is a side view showing a suspended state of the drum type washing machine according to the second embodiment of the present invention.

FIG. 17 is a front view showing a suspended state of the drum type washing machine according to the second embodiment of the present invention.

FIG. 18 is a rear view showing a suspended state of the drum type washing machine according to the second embodiment of the present invention.

FIG. 19 is a side view showing a suspended state of the drum type washing machine according to the third embodiment of the present invention.

FIG. 20 is a diagram illustrating a suspension device that supports the rear of the water tub of the drum type washing machine according to the third embodiment of the present invention.

FIG. 21 is a side sectional view showing a conventional drum-type washing machine.

FIG. 22 is a side view showing a suspended state of the conventional drum type washing machine.

FIG. 23 is a front view showing a suspended state of a conventional drum type washing machine.

[Description of Signs] 1, 51 Body exterior unit 2 Control device 3, 53 Opening / closing door 4, 54 Water tank 5, 55 Drum 7a First suspension device 7b, 7c Second suspension device 8a, 8b, 62, 63 Damper 9, 59 Driving mechanism 10, 60 Packing 12 Water supply pipe 13 Water supply valve 16 Drain duct 17 Connection case 18 Drain pump 20 Circulation pump 23 Water level sensor 24 Drying unit 25 Ventilation fan 26 Heater 27 Cooling duct 29a, 29B, 30a, 30b, 35 Angle 33 Rod 34 Spring receiver 37 Sealed air chamber 41 Front water tank 42 Rear water tank 46, 47 Mounting part 57, 58 Suspension device 71 Compression spring 81 Rod 82 Cylinder 83 Piston 100 Oscillator 101, 102 Weight

Claims (12)

[Claims] 1. A bottomed body having a main body exterior part having a laundry input port opened on the front surface, and an opening part disposed in the main body exterior part and opening to a portion facing the laundry input port. A cylindrical water tank, a packing made of an elastic body connected to form a passage between the laundry inlet and the opening, a drum rotatably supported in the water tank, and the drum A driving mechanism for rotationally driving, a suspension device for swingably suspending the water tank, and a front damping device for supporting a front portion of the water tank and attenuating the swing of the front portion of the water tank, the suspension device A drum-type washing machine characterized in that the front damping device supports the center of gravity of an oscillating body that constitutes the total weight suspended by the front damping device, and attenuates the amplitude of the resonance point of the drum-type washing machine. 2. A bottomed body having a main body exterior part having a laundry input port opened on the front surface, and an opening part disposed in the main body exterior part and opening to a portion facing the laundry input port. A cylindrical water tank, a packing made of an elastic body connected to form a passage between the laundry inlet and the opening, a drum rotatably supported in the water tank, and the drum A driving mechanism for rotating and driving, a suspension device for swingably suspending the water tank, and a forward damping device for supporting the water tank and attenuating a swing of a front portion of the water tank, wherein the packing of the water tank is It has a packing attachment part to be attached, characterized in that a part ahead of a center of the packing attachment part and a center of gravity of an oscillator constituting a total weight suspended by the suspension device is supported by the front damping device. Drum type濯機. 3. A bottomed body having a main body exterior part having a laundry input port opened on the front side, and an opening part disposed in the main body exterior part and opening to face a portion facing the laundry input port. A cylindrical water tank, a packing made of an elastic body connected to form a passage between the laundry input port and the opening, a drum rotatably supported in the water tank, and the drum A drive mechanism for rotating and driving, a suspension device for swingably suspending the water tank, and a front damping device for supporting a front portion of the water tank and attenuating the swing of the front portion of the water tank, A drum type washing machine wherein a rear portion is supported only by the suspension device. 4. The drum type washing machine according to claim 3, wherein the suspension device has a damping portion that supports a rear portion of the water tub from above and attenuates a swing of the rear portion of the water tub. 5. A bottomed body having a main body exterior part having a laundry input port opened on the front surface, and an opening part disposed in the main body exterior part and opening to a portion facing the laundry input port. A cylindrical water tank, a packing made of an elastic body connected to form a passage between the laundry input port and the opening, a drum rotatably supported in the water tank, and the drum A drive mechanism for rotationally driving, a suspension device for swingably suspending the water tank, a front damping device for supporting a front portion of the water tank and damping the swing of the front portion of the water tank, and a front damping device. And a rear damping device having a small damping coefficient and supporting a rear portion of the water tub from below to attenuate swinging of the rear portion of the water tub. 6. The front damping device comprises a single damper for supporting the water tank from below, and the damper is arranged on a vertical line passing through the center of the opening. 5. The drum-type washing machine according to any one of 5. 7. The drum type washing machine according to claim 3, wherein the front damping device is rotatably attached to the water tub as viewed from the front of the water tub. . 8. The drum type washing machine according to claim 1, wherein a front surface of the water tub is supported by the front damping device. 9. The drum type washing machine according to claim 1, wherein a weight member having a large mass is provided at a front portion of the water tub. 10. The water tank comprises a front water tank and a rear water tank which are divided into front and rear, and a mounting portion for attaching the front damping device to the front water tank is integrally formed. 10. The drum-type washing machine according to any one of 9 above. 11. A connecting part for connecting the front water tank and the rear water tank to an end surface of the front water tank and the rear water tank, and a mounting part of the front damping device is formed at the connecting part. The drum type washing machine according to claim 10. 12. The packing according to claim 1, wherein the packing is made of rubber or soft resin having a rubber hardness of 35 degrees or less.
The drum-type washing machine according to claim 11.