JP2022174789A - Drum-type washing machine - Google Patents

Abstract

To provide a drum-type washing machine having a structure that can suppress vibration in a rotation direction of a drum with respect to an axis vertical to the drum during dewatering rotation, vibration of an outer tank, and vibration transmitted to a floor in a well-balanced manner and achieve balance in a lateral direction of the outer tank.SOLUTION: A drum-type washing machine comprises: a first front vibration-proof member 24 and a second front vibration-proof member 25, which are located on the front side of the gravity center position of an outer tank 17 and connected to lower right and lower left portions, respectively, of the outer tank 17; and a first rear vibration-proof member 26 and a second rear vibration-proof member 27, which are located on rear side of the gravity center position of the outer tank 17 and connected to the lower right and lower left portions, respectively, of the outer tank 17. The first front vibration-proof member 24 is installed so that an installation angle from a horizontal direction is larger than that of the second front vibration-proof member 25. The second rear vibration-proof member 27 is installed so that installation angle from a horizontal direction is larger than that of the first rear vibration member 26.SELECTED DRAWING: Figure 4

Description

TECHNICAL FIELD The present invention relates to a drum-type washing machine, and more particularly to a drum-type washing machine that reduces vibration during dehydration rotation by vibration isolation inside the washing machine.

A drum-type washing machine connects a housing and an outer tub with a bellows, and a cylindrical drum is placed inside the outer tub installed in the housing so that it can rotate about a horizontal axis or an inclined axis. The laundry is stored in the outer tub, and the laundry is washed by rotating the drum while water is stored in the outer tub.

As a general drum-type washing machine, there is a structure disclosed in Patent Document 1, for example. In the drum-type washing machine disclosed in Patent Document 1, an outer tub in which the drum is inserted is supported by three dampers and springs in order to reduce the transmission of vibration to the housing when the drum rotates. In the structure disclosed in Patent Document 1, the outer tank is suspended from the upper part of the housing by a spring, and three dampers are arranged as vibration-isolating members. Two dampers are installed on one of the left and right sides, and one damper is installed on the opposite side. In this damper installation structure, by changing the installation angle of the dampers seen from the front on the side where the two dampers are installed, the damping force of the dampers is effectively applied in each direction, thereby suppressing the horizontal and vertical vibrations of the outer tank during the rotation of the dehydrator. I try to keep it down.

JP-A-2015-43801

However, in the technique described in Patent Document 1, when the gap between the housing and the outer tank becomes narrow due to the increase in drum capacity and the compactization of the housing, the rotation of the drum about the axis perpendicular to the drum. The effect of vibration in the direction is increased and the drum can hit the housing.

An object of the present invention is to solve the above-mentioned problems, suppress the vibration of the drum in the rotation direction about the axis perpendicular to the drum when the drum rotates, and the vibration of the outer tank, and balance the outer tank in the left-right direction. To provide a drum-type washing machine capable of

In order to achieve the above object, the present invention provides a housing, an outer tub in which a drum for storing laundry is rotatably inserted, and a front side of the center of gravity of the outer tub. a front first vibration-isolating member and a front second vibration-isolating member respectively connected to the left and right of the lower portion of the outer tub; A first rear vibration-isolating member and a second rear vibration-isolating member are provided, and the first front vibration-isolating member is installed at a larger installation angle from the horizontal direction than the second front vibration-isolating member. The second rear vibration-isolating member is installed at a larger installation angle from the horizontal direction than the first rear vibration-isolating member.

According to the present invention, there is provided a drum-type washing machine that suppresses the vibration of the drum in the direction of rotation of the drum and the vibration of the outer tub with respect to the axis perpendicular to the drum when the drum rotates, and also allows the outer tub to be balanced in the left-right direction. can do.

1 is an external perspective view of a drum-type washing machine 100 according to Embodiment 1 of the present invention; FIG. 1 is a side cross-sectional view showing an internal structure of a drum-type washing machine 100 according to Embodiment 1 of the present invention; FIG. FIG. 3 is a perspective view schematically showing the relationship between the vibration-isolating member 28 and the outer tank 17 according to Example 1 of the present invention; FIG. 4 is a front view schematically showing the relationship between the vibration-isolating member 28 and the outer tank 17 according to the first embodiment of the present invention; FIG. 10 is a front view schematically showing the relationship between a vibration isolating member 28 and an outer tank 17 according to Example 2 of the present invention; FIG. 11 is a side view schematically showing the relationship between a vibration isolating member 28 and an outer tank 17 according to Example 3 of the present invention;

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Similar components are denoted by similar reference numerals, and similar descriptions are not repeated.

The various constituent elements of the present invention do not necessarily have to be independent entities, and one constituent element may consist of a plurality of members, a plurality of constituent elements may consist of one member, a certain constituent element may part of a component, part of one component overlaps part of another component, and so on.

FIG. 1 is an external perspective view of a drum-type washing machine 100 according to Embodiment 1 of the present invention. FIG. 2 is a side sectional view showing the internal structure of the drum-type washing machine 100 according to the first embodiment of the present invention. The configuration and operation of the drum-type washing machine 100 will be described with reference to FIGS. 1 and 2. FIG.

First, each direction for explanation is defined. When the drum-type washing machine 100 is viewed from the front, the horizontal direction is the left-right direction, the height direction is the up-down direction, the depth direction is the front-back direction, the pitch direction rotating around the left-right axis, and the up-down direction. The yaw direction, which rotates about an axis, and the roll direction, which rotates about a longitudinal axis.

In FIG. 1, the housing 1 constituting the outer side of the drum-type washing machine 100 includes a housing base 1a arranged below the housing 1, a side plate 1b arranged above the housing base 1a and covering the side surface, It is composed of a front cover 1c arranged above the housing base 1a and covering the front surface, and a top cover 1d arranged above the side plates 1b and the front cover 1c.

The top cover 1d is provided with a water supply hose connection port 30 for supplying water to the drum-type washing machine 100 from a tap. The door 2 is supported by a hinge provided in the center of the front cover 1c so that it can be opened and closed. By pulling the door opening handle 2a, the door 2 is unlocked and opened forward, and is locked and closed by pressing the door 2 against the front cover 1c.

The front cover 1c has a circular opening for loading and unloading clothes concentrically with the opening of the outer tub 17 (FIG. 2).

An operation panel 3 provided on the top of the housing 1 has a power switch 4 and an operation switch 5 . The operation panel 3 is electrically connected to a control section 7 (FIG. 2) provided inside the housing 1 . A drain hose 34 for draining water is attached to the housing base 1a.

In FIG. 2, inside the housing 1 of the drum-type washing machine 100, an outer tub 17 for storing water is provided. The outer tub 17 inserts a drum 21 for containing laundry. The outer tub 17 is suspended from the housing 1 via a spring 20 so as to balance the outer tub 17 in the front-rear direction and prevent it from tilting back and forth. A lower portion of the outer tub 17 is supported by a vibration isolation member 28 fixed to the housing 1 .

The vibration isolating member 28 is composed of four vibration isolating members 24 , 25 , 26 , and 27 . The details of installation of the vibration isolation member 28 will be described later.

A motor 22 and a bearing are provided behind the outer tub 17 . The controller 7 controls the rotation speed of the motor 22 . Further, the control unit 7 acquires the sensor value of the vibration sensor 29 provided in the drum-type washing machine 100 . During the dehydration process, when the vibration amplitude of the outer tub 17 detected by the vibration sensor 29 exceeds a preset threshold value due to the imbalance of the clothes thrown into the drum, the dehydration process is temporarily stopped, and the drum 21 is rotated forward. After reversing and correcting the imbalance of the clothes, the dehydration process is redone.

When the motor 22 is driven, the drum 21 rotates forward (clockwise when the drum type washing machine 100 is viewed from the front for convenience in the first embodiment) and reverses (in the first embodiment, the drum type washing machine 100 is rotated from the front for convenience). counterclockwise when viewed).

On the inner peripheral surface of the drum 21, a plurality of dehydration holes 21b for draining the washing water in the drum to the outer tub 17 are arranged at intervals in the circumferential direction of the drum 21 and put into the drum. A plurality of baffles 23 are provided for lifting the garment. The baffle 23 is installed in the longitudinal direction of the drum 21 .

The opening of the outer tub 17 and the inlet of the housing 1 are connected by a bellows 19 that easily expands and contracts in the front-rear direction. The bellows 19 is made of an annular elastic member and seals the drum 21 when the door 2 is closed. The inlet of the housing 1, the opening of the outer tub 17, and the opening of the drum 21 communicate with each other, and the clothes can be taken in and out of the drum 21 by opening the door 2. FIG.

A water supply valve 31 is provided below the water supply hose connection port 30 , and one end of a water supply hose 32 for supplying water to the outer tank 17 is connected to the water supply valve 31 . When the water supply valve 31 is opened, water flows from the water supply hose connection port 30 to the water supply hose 32 and is supplied to the outer tub 17 through the detergent container 33 . The detergent container 33 is filled with detergent in advance and is put into the outer tub 17 together with water supplied from the water supply hose 32 .

A drain valve 34a is provided in the drain path of the drain hose 34 provided in the lower part of the outer tank 17 . When the drain valve 34a is closed, the water supplied to the outer tub 17 is accumulated in the outer tub 17, and when the drain valve 34a is opened, the washing water in the outer tub 17 is drained out of the drum-type washing machine 100 through the drain hose 34. be done.

Next, the operation of drum-type washing machine 100 in the above configuration will be described. In the drum-type washing machine 100 configured in this manner, the user first presses the power switch 4 to start the drum-type washing machine 100 . Then, the user pulls the door opening handle 2a, opens the door 2, and throws the clothes into the drum 21.例文帳に追加After the user closes the door 2, the operation of the washing process is started by operating the operation switch 5. - 特許庁

In the washing process, the water supply valve 31 is opened, and water supplied from the water supply hose connection port 30 is supplied to the outer tub 17 together with the detergent through the water supply hose 32 and the detergent container 33 . At this time, the larger the laundry volume calculated based on the number of revolutions of the motor 22 and the current value, the larger the amount of water supplied in the washing process. Thereafter, the drum 21 is washed for a predetermined period of time by repeating forward rotation, stop, reverse rotation, and stop. At this time, the clothes are lifted by the baffle 23 and dropped repeatedly, thereby enhancing the cleaning power of the clothes.

After performing a washing process, a dehydration process is performed. In the dewatering process, the drum 21 is first rotated at a low rotational speed at which the clothes do not stick. At the low speed of rotation, the clothes soaked with water in the washing process are lifted by the baffle 23 when the drum 21 rotates, and spread on the inner peripheral surface of the drum 21 when the clothes drop. When the clothes begin to spread, the rotation speed of the drum 21 is gradually increased to stick the clothes on the drum 21 by centrifugal force. When the clothes stick to the drum 21, the rotation speed of the drum 21 is increased to reach the target rotation speed while passing through the resonance section of the outer tub 17 where the vibration of the outer tub 17 increases, thereby removing the water contained in the clothing. is centrifuged.

After performing the dehydration process, a rinsing process is performed. In this rinsing step, the water supply valve 31 is opened to supply water supplied from the water supply hose connection port 30 to the outer tub 17 via the water supply hose 32 and the detergent container 33 . Also, as in the washing process, the larger the calculated clothes volume, the larger the amount of water supply. In the rinsing process, the normal rotation, stop, reverse rotation, and stop of the drum 21 are repeated in the same manner as in the washing process. At this time, the clothes lifted by the baffle 23 are stirred for a predetermined period of time.

After that, the dehydration process and the rinsing process are repeated a predetermined number of times, and the final dehydration process is started.

Next, a method for installing the vibration isolation member 28 will be described. FIG. 3 is a perspective view schematically showing the relationship between the anti-vibration member 28 and the outer tank 17 according to Example 1 of the present invention. FIG. 4 is a front view schematically showing the relationship between the anti-vibration member 28 and the outer tank 17 according to Example 1 of the present invention.

Four vibration-isolating members 28 of Embodiment 1 are installed, and the vibration-isolating members arranged on the left side as viewed from the front are referred to as front first vibration-isolating member 24 and rear first vibration-isolating member 26, respectively. . Also, the vibration-isolating members on the opposite side (right side) are referred to as a front-side second vibration-isolating member 25 and a rear-side second vibration-isolating member 27, respectively. Note that the first and second may be left-right reversed.

At the connecting portion between the first front vibration-isolating member 24 and the housing (not shown), the installation angle from the horizontal direction to the first front vibration-isolating member 24 is A, and the second front vibration-isolating member 25 and the housing (not shown) ), let B be the installation angle from the horizontal direction to the second front vibration-isolating member 25 .

In addition, at the connecting portion between the rear first vibration-isolating member 26 and the housing (not shown), the installation angle from the horizontal direction to the rear-side first vibration-isolating member 26 is C, and the rear second vibration-isolating member 27 and Let D be the installation angle from the horizontal direction to the rear second vibration isolation member 27 at the connection portion of the housing (not shown).

In the installation angles A, B, C, and D, the direction in which the angles approach 0° is the direction in which the vibration isolating member 28 falls. Conversely, the direction in which the installation angles A, B, C, and D approach 90° is the direction in which the anti-vibration member 28 stands.

Of the vibration-isolating members 28, the first front-side vibration-isolating member 24 and the second front-side vibration-isolating member 25 are installed on the front side of the center of gravity G (FIG. 2) of the outer tank 17, and the first rear-side vibration-isolating member 26 and the rear The side second vibration isolating member 27 is installed behind the center of gravity G of the outer tub 17 . By arranging the anti-vibration member 28 in this way, it is possible to suppress the vibration of the outer tank 17 in the yaw direction and further balance it in the front-rear direction.

Next, the arrangement of the anti-vibration members 28 when the drum 21 rotates in the normal direction for dehydration will be described.

When the drum 21 is dewatering in the normal direction, the first front vibration isolating member 24 and the second front vibration isolating member 25 have an installation angle A from the horizontal direction of the first front vibration isolating member 24 as viewed from the front. , so as to be larger than the installation angle B of the second front vibration-isolating member 25 (A>B). In other words, the second front vibration isolating member 25 is set lower than the first front vibration isolating member 24 . The second front anti-vibration member 25 is installed at a position where a compressive force acts on the forward rotation of the drum 21 .

When an unbalanced load occurs in front of the drum 21, the distance from the center of gravity G to the unbalanced load becomes small, and the front portion of the outer tub 17 tends to vibrate in the lateral direction. Therefore, the damping force in the lateral direction is effective by the front second vibration isolating member 25, and the lateral vibration isolation effect on the front side of the outer tank 17 can be obtained.

On the other hand, the first rear vibration-isolating member 26 and the second rear vibration-isolating member 27 rotate the drum 21 in the normal direction for dehydration, contrary to the first front vibration-isolating member 24 and the second front vibration-isolating member 25 . In this case, the installation angle D of the rear second vibration isolating member 27 from the horizontal direction when viewed from the front is set to be larger than the installation angle C of the rear side first vibration isolating member 26 (D>C). . That is, the rear second vibration-isolating member 27 is set up higher than the rear first vibration-isolating member 26 . The rear second vibration isolating member 27 is installed at a position where a compressive force acts on the forward rotation of the drum 21 . When an unbalanced load occurs behind the drum 21, the distance from the center of gravity G to the unbalanced load becomes small, and the rear portion of the outer tub 17 tends to vibrate in the vertical direction. Therefore, the damping force in the vertical direction is effective by the rear second vibration-isolating member 27, and the vibration-isolating effect in the vertical direction on the rear side of the outer tub 17 is obtained.

Moreover, in Example 1, the installation angles from the horizontal direction of the first front vibration-isolating member 24 and the second rear vibration-isolating member 27 are the same (A=D). Furthermore, in Example 1, the installation angles from the horizontal direction of the second front vibration-isolating member 25 and the first rear vibration-isolating member 26 are the same (B=C).

The first front vibration-isolating member 24 and the first rear vibration-isolating member 26 are arranged side by side in the front-rear direction (on the left side in the first embodiment), and the second front vibration-isolating member 25 and the second rear vibration-isolating member 27 are arranged side by side. They are arranged side by side in the front-rear direction (right and left sides in the first embodiment). That is, the first front vibration-isolating member 24, the second front vibration-isolating member 25, the first rear vibration-isolating member 26, and the second rear vibration-isolating member 27 face each other without tilting the same side when viewed from the front. The balance in the lateral direction of the outer tub 17 is maintained by tilting or standing it at a corner.

Further, in Example 1, the first front vibration-isolating member 24 and the second front vibration-isolating member 25 are installed at the same position in the front-rear direction. Similarly, the first rear vibration-isolating member 26 and the second rear vibration-isolating member 27 are installed at the same position in the front-rear direction. That is, the first front vibration-isolating member 24 and the second front vibration-isolating member 25, and the first rear vibration-isolating member 26 and the second rear vibration-isolating member 27 are arranged to face each other in the left-right direction. By doing so, the parts of the housing base 1a of the housing 1 can be the same on the left and right sides, and the number of parts can be reduced.

According to the first embodiment, by arranging the anti-vibration member 28 as described above, it is possible to prevent the outer tub 17 from tilting in the horizontal direction or falling down.

Further, according to the first embodiment, by suppressing vibration, the load on the bellows 19 can be suppressed, and the vibration transmitted from the bellows 19 to the housing 1 can be suppressed. As for the installation angle from the horizontal direction of the vibration isolating member 28 when viewed from the front, A>B and C<D are satisfied.

When the drum 21 is rotating in reverse for dehydration, the first front vibration-isolating member 24 and the first rear vibration-isolating member 26 are arranged on the right side when viewed from the front, and the second front vibration-isolating member 25 and The rear second vibration isolating member 27 is arranged on the left side when viewed from the front so that A>B and C<D are satisfied.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 5 is a front view schematically showing the relationship between the anti-vibration member 28 and the outer tank 17 according to Example 2 of the present invention. The second embodiment differs from the first embodiment in that the installation angles of the first front vibration-isolating member 24 and the first rear vibration-isolating member 26 are the same.

The size relationship of the installation angle of the vibration isolating member 28 when viewed from the front is independent of the front side and the rear side.

In FIG. 5, the first front vibration-isolating member 24 and the second front vibration-isolating member 25 are installed at an angle A from the horizontal direction of the first front vibration-isolating member 24 when viewed from the front. It is installed so that it is larger than the installation angle B (A>B). In other words, the second front vibration isolating member 25 is set lower than the first front vibration isolating member 24 .

On the other hand, the first rear vibration-isolating member 26 and the second rear vibration-isolating member 27 have an installation angle D from the horizontal direction of the second rear vibration-isolating member 27 when viewed from the front. 26 to be larger than the installation angle C (D>C). That is, the rear second vibration-isolating member 27 is set up higher than the rear first vibration-isolating member 26 .

Furthermore, in Example 2, the installation angles from the horizontal direction of the first front vibration-isolating member 24 and the first rear vibration-isolating member 26 are the same (A=C). That is, the installation angles of these anti-vibration members are D>A=C>B.

According to the second embodiment, in addition to the effects of the first embodiment, by configuring as described above, it is possible to easily install a device elongated in the front-rear direction below the outer tub 17 .

It should be noted that the installation angle of the anti-vibration member may be set so that A<B=D<C.

FIG. 6 is a side view schematically showing the relationship between the anti-vibration member 28 and the outer tank 17 according to Example 3 of the present invention.

In the configuration shown in FIG. 6, the installation angle of the vibration-isolating member 28 satisfies A>B and C<D when viewed from the front. 24 and the second front vibration isolating member 25 are tilted rearward, and the first rear vibration isolating member 26 and the second rear vibration isolating member 27 are tilted forward.

According to the third embodiment, since the vibration-isolating member 28 is installed tilted in the front-rear direction when viewed from the right side, the damping force of the vibration-isolating member 28 can also be applied in the front-rear direction, and the dewatering rotation is performed. It is possible to suppress the back-and-forth vibration of the outer tank.

Furthermore, according to the third embodiment, since it is possible to suppress back and forth vibration of the outer tub during dehydration rotation, the load on the bellows 19 installed between the opening of the outer tub 17 and the inlet of the housing 1 is reduced. can do.

In the configuration of FIG. 6, both the first front vibration-isolating member 24 and the second front vibration-isolating member 25 are tilted rearward, but either one of them may be tilted rearward. Similarly, either one of the first rear vibration-isolating member 26 and the second rear vibration-isolating member 27 may be tilted forward. Furthermore, at least one vibration isolating member 28 among the four vibration isolating members 28 may be tilted in the front-rear direction.

The above-described embodiments have been described in detail for explaining the present invention, and are not necessarily limited to those having all the described configurations. Moreover, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Furthermore, it is possible to add, delete, or replace part of the configuration of each embodiment with other configurations.

DESCRIPTION OF SYMBOLS 1... Case, 2... Door, 3... Operation panel, 4... Power switch, 5... Operation switch, 7... Control part, 17... Outer tank, 19... Bellows, 20... Spring, 21... Drum, 22... Motor, 23 Baffle 24 Front first vibration isolating member 25 Front second vibration isolating member 26 Rear first vibration isolating member 27 Rear second vibration isolating member 28 Antivibration member 29 Vibration sensor 30 Water supply hose connection port 31 Water supply valve 32 Water supply hose 33 Detergent container 34 Drainage hose 100 Drum type washing machine

Claims (9)

A housing, an outer tub in which a drum for storing laundry is rotatably inserted in the housing, and a front side of the center of gravity of the outer tub and connected to the left and right of the lower part of the outer tub. a front first vibration-isolating member and a front second vibration-isolating member, and a rear first vibration-isolating member connected to the left and right of the lower portion of the outer tub on the rear side of the center of gravity of the outer tub, and A rear second vibration isolation member is provided,
The first front vibration-isolating member is installed at a larger installation angle from the horizontal direction than the second front vibration-isolating member,
A drum-type washing machine, wherein the second rear vibration-isolating member is installed at a larger installation angle from the horizontal direction than the first rear vibration-isolating member. In claim 1,
A drum-type washing machine, wherein the first front vibration-isolating member and the second rear vibration-isolating member are installed at the same angle from a horizontal direction. In claim 1,
A drum-type washing machine, wherein the second front vibration-isolating member and the first rear vibration-isolating member are installed at the same angle from a horizontal direction. In claim 1,
The first front vibration-isolating member and the second rear vibration-isolating member are installed at the same angle from the horizontal direction,
A drum-type washing machine, wherein the second front vibration-isolating member and the first rear vibration-isolating member are installed at the same angle from a horizontal direction. In claim 1,
A drum-type washing machine, wherein the first front vibration-isolating member and the first rear vibration-isolating member are installed at the same angle from a horizontal direction. In claim 1,
A drum-type washing machine, wherein the second front vibration-isolating member and the second rear vibration-isolating member are installed at the same angle from a horizontal direction. In any one of claims 1 to 6,
The first front vibration-isolating member and the second front vibration-isolating member are installed at the same position in the front-rear direction,
A drum-type washing machine, wherein the first rear vibration-isolating member and the second rear vibration-isolating member are installed at the same position in the front-rear direction. In any one of claims 1 to 6,
A drum-type washing machine, wherein either one of the first front vibration-isolating member and the second front vibration-isolating member, or both of them, are installed so as to be inclined rearward. In claim 8,
A drum-type washing machine, wherein either one of the first rear vibration-isolating member and the second rear vibration-isolating member, or both of them, is installed so as to be inclined forward.

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