JPH0751185B2 - Anti-vibration device for dehydration washing machine - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration device for a dewatering washing machine for washing and dewatering clothes and the like.

2. Description of the Related Art Conventionally, this type of dewatering washing machine has a structure as shown in FIG. 8 as shown in, for example, Japanese Utility Model Publication No. 49-30710. That is, in the figure, 1 is the main body of the dehydration washing machine, 2
Is a washing and dewatering tank with a plurality of dewatering holes 3 formed in the inner peripheral wall,
Reference numeral 4 is a resin-made laundry receiving tub in which the washing / dehydrating tub 2 is rotatably installed inside, 5 is an agitating blade provided at the central inner bottom of the washing / dehydrating tub 2, and 6 is a transmission mechanism part, which is provided inside during washing. It has a reduction gear, a switching clutch for washing / dewatering, and a brake for dewatering. A motor 7 is attached to the bottom of the outer tub 4, and the power of the motor 7 is transmitted through a motor pulley 8, a belt 9 and an impeller pulley 10. Reference numeral 11 denotes a vibration isolation mechanism having a compression spring 11a that is suspended from the main body 1, and supports the laundry receiving tub 4 from the main body 1 by vibration isolation. 12 is the main body 1
A main body cover made of resin provided on the upper part of the machine, including a laundry inlet 13 and an operation panel.

In the dewatering washing machine having this structure, the horizontal and vertical vibrations of the washing tub 4 at the time of dewatering start due to the unevenness of the object to be dewatered are damped by the vibration isolating mechanism 11 and the collision of the washing tub 4 with the main body 1 is suppressed. However, since the vibration damping of the anti-vibration mechanism 11 is insufficient for horizontal vibration, the washing tub 4 is
There was a case where a normal dehydration action was not performed due to a collision with the vehicle or a safety switch (not shown) being activated to stop the operation.

In order to solve such a problem, the inventors have already proposed an anti-vibration device for a dehydration washing machine having a structure as shown in FIG. In FIG. 9, members 1, 2, 4, and 11 are the same as those in the conventional example shown in FIG. Reference numeral 23 denotes a mounting portion of the elastic body 24, which is integrally formed with the washing tub 4. 24 is an elastic body consisting of a coil spring, one end of which is a mounting part
It is fixed to 23 and a sliding body 25 is attached to the other end. The sliding body 25 slidably contacts the side wall of the main body 1.

With this configuration, even if the material to be dehydrated is unevenly distributed during dehydration, the whirling vibration of the laundry receiving tub 4 at the time of dehydration activation is caused by the elastic body.
It is reduced by the reaction force of 24 and the sliding frictional force between the sliding body 25 and the main body 1 to prevent the laundry receiving tub 4 from colliding with the main body 1 and perform a normal dehydration action.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention As described above, the structure already proposed has a remarkable action and effect as the vibration isolator of the dehydration washing machine, but when the whirling of the washing tub 4 becomes large. Laundry tank 4
As the reaction force of the elastic body 24 against the main body 1 increases, the reaction force against the main body 1 also increases, and sticking occurs on the side surface of the main body 1 made of a thin metal plate, and it is necessary to increase the plate thickness of the main body 1. Due to the friction of the sliding body 25, there was a problem that the plating on the inner wall of the main body came off.

The present invention solves such a problem, reduces whirling vibration of the laundry receiving tub at the time of starting dehydration, enables smooth dehydration, and enlarges the washing and dehydrating tub in the same main body as the conventional one. The purpose is to increase the capacity and, conversely, to reduce the size of the main unit to achieve compactness.

Means for Solving Problems The technical means of the present invention for achieving the above-mentioned object is a main body of a dehydration washing machine having a resin main body cover provided with a laundry input port, an operation part, etc. mounted thereon. A washing tub suspended and supported in the main body via a vibration damping mechanism for damping vertical vibrations; and a compressible elastic body interposed between a side wall of the main body cover and a side wall of the washing tub. , One end of the elastic body is fixed to one of the main body cover or the washing tub, and the other end is slidably elastically contacted to either the side wall of the washing tub or the side wall of the main body cover through the sliding body. It is a thing.

Action The action of this technical means is as follows.

That is, the elastic body is interposed between the main body cover and the washing tub, and the vibrating body at one end of the elastic body is elastically contacted with the main body cover or the washing tub. Even if the whirling vibration of the machine becomes large, it can be suppressed by the elastic body, and the vibration can be damped by the friction between the sliding body and the main body or the washing tub. As a result, even if the laundry is unevenly distributed, the laundry receiving tub does not collide with the main body at the time of starting the dehydration, so that the dehydration can be smoothly performed.

Further, since the main body cover or the washing tub to which the sliding body makes elastic contact are made of resin, the frictional characteristics between them do not change over time due to corrosion and the rigidity is increased by forming ribs. As a result, it is possible to eliminate stickiness due to the reaction force that suppresses whirling of the washing tub at the time of starting dehydration.

Embodiment One embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a front sectional view of a dewatering washing machine according to a first embodiment of the present invention, and FIG. 2 is a plan sectional view of the same. In the figure, 1 to 11 are the same as the members of the conventional example shown in FIG. Reference numeral 14 denotes a resin-made main body cover provided on the upper portion of the main body 1, which has a laundry inlet 15 and an operation panel, and the lower end of the side wall is attached to the main body 1 by a fastening portion 14a. A part of the fastening portion 14a is extended inside the side wall of the main body 1, and a mounting portion 16 protruding inward is formed on the extended portion. Reference numeral 17 denotes an elastic body made of a coil spring, one end of which is fixed to the mounting portion 16 and the other end of which is provided with a sliding body 18 as shown in FIG. The sliding body 18 is slidably elastically contacted with the laundry receiving tub 4.

The operation of the dehydration washing machine configured as described above will be described below.

When washing water is put into the washing / dehydrating tub 2 and the laundry receiving tub 4 at the time of washing, the laundry receiving tub 4 descends due to its weight. Due to this lowering, the compression spring provided in the vibration isolation mechanism 11
11a is in a fully compressed state, but the stirring blade 5
Is rotated, and the laundry is moved by the water flow. Therefore, the vibration of the laundry receiving tub 4 is relatively small, and the vibration during washing does not pose a problem.

On the other hand, at the time of dehydration, the washing water in the laundry receiving tub 4 is discharged to the outside, so that the weight of the laundry receiving tub 4 is reduced. Along with this decrease, the compression spring 11a of the anti-vibration mechanism 11 is in a slightly expanded state, and the vibration of the laundry receiving tub 4 caused by uneven distribution of the laundry with the start of dehydration is damped.

Generally, the vibration of the laundry receiving tub 4 at the time of dehydration is roughly classified into horizontal vibration and vertical vibration. The conventional vibration damping mechanism 11 can sufficiently absorb the vertical vibration, but the horizontal vibration is insufficient when the laundry is largely biased. In order to further increase the washing capacity, it is necessary to increase the outer diameters of the washing / dehydrating tub 2 and the laundry receiving tub 4. At that time, in order to keep the main body 1 on the same floor area as the conventional one, the washing of the main body 1 and the washing It is necessary to reduce the gap with the receiving tank 4. In order to reduce this gap, it is necessary to suppress the horizontal vibration of the washing tub 4 during dehydration more than before.

Therefore, in this embodiment, in order to suppress horizontal vibration, particularly vibration at the initial stage of startup, one end of the elastic body 17 is fixed to the mounting portion 16 provided so as to project from the extended portion of the main body cover 14, and the other end is fixed. A sliding body 18 is attached to the washing machine, and the sliding body 18 is slidably interposed in the laundry receiving tub 4. As a result, the laundry receiving tank 4
When the horizontal displacement amount of the elastic body 17 increases, the elastic body 17 gives a large reaction force to the laundry receiving tub 4, and the reaction force of the elastic body 17 increases the contact pressure between the sliding body 18 and the laundry receiving tub 4, causing friction between them. Thus, the vibration of the laundry receiving tub 4 is suppressed. Therefore, it is possible to suppress a large vibration in the horizontal direction caused by the unevenness of the laundry at the initial stage of dehydration activation, prevent the laundry receiving tub 4 from colliding with the main body 1, and perform smooth dehydration. Further, the reaction force of the elastic body 17 is also applied to the fixed mounting portion 16, but since the mounting portion 16 is made of resin, the rigidity is increased by the ribs and the like, and the main body 1 becomes sticky due to the reaction force. There is no such deformation. In addition, the elastic body 17
Since the mounting part 16 of can be integrally molded with the main body cover 14,
It will be very cheap.

Further, since the elastic body 17 of this embodiment has one end fixed and a sliding body 18 attached to the other end so as to be slidable, it is necessary for the elastic body 17 to move the washing tub 4 vertically and horizontally. Since the above stress is not applied, it is possible to reduce the wire diameter of the elastic body 17 and improve the durability.

Further, by providing the elastic bodies 17 at at least four substantially symmetrical positions as shown in FIG. 2, the washing tub 4 is located at the center regardless of which direction the main body 1 is installed. Therefore, even if the installation place is slightly inclined, dehydration is normally performed, and there is no inconvenience that the operation is stopped as in the conventional case and restarting is performed after rinsing again.

FIG. 3 is a front sectional view of a vibration isolation device for a dehydration washing machine according to a second embodiment of the present invention. In the figure, 2
10 to 10 are the same as the members of the conventional example shown in FIG. Reference numeral 19 denotes a main body, which has a height lower than that of the conventional one, so that the upper end of the washing tub 4 projects from the upper surface of the main body 19. Reference numeral 20 denotes an anti-vibration mechanism having a compression spring 20a, which is shorter than before because the height of the main body 19 is lowered. Reference numeral 21 denotes a resin main body cover, which is provided with a laundry inlet 22 and an operation panel, and is attached to the upper portion of the main body 19. Reference numeral 23 denotes a mounting portion of the elastic body 24, which is integrally formed with the washing tub 4.
Reference numeral 24 denotes an elastic body formed of a coil spring, one end of which is fixed to the mounting portion 23 and the other end of which is provided with a sliding body 25. This sliding body
25 is slidably elastically contacted with the side wall of the body cover 21.

With the above-described structure, as in the first embodiment, a large horizontal vibration generated due to the unevenness of the laundry at the initial stage of the dehydration start-up causes the reaction force of the elastic body 24 and the sliding body 25.
It is suppressed by the friction between the main body cover 21 and the main body cover 21 to prevent the laundry receiving tub 4 from colliding with the main body 1, and smooth dewatering can be performed. By the way, a reaction force that suppresses the vibration of the washing tub 4 is also applied to the main body cover 21, but since the main body cover 21 is made of resin, it is possible to easily design the body cover 21 with increased rigidity. There is no such deformation. Further, the sliding body 25 is slid on the side wall of the main body cover 21, but if a resin material or the like is used for the sliding body 25, the main body cover 21 is resin, and therefore the sliding body 25 and the main body cover 21 are corroded due to corrosion.
The friction state with does not change, and the durability is good.

The elastic bodies 17 and 24 of this embodiment are cylindrical compression coil springs having an equal pitch. However, when an elastic body having a non-linear load-displacement characteristic is used as shown in FIG. Since a large suppressing force can be applied only when the vibration is large, it is possible to suppress the vibration of the laundry receiving tub 4 at the time of starting dehydration and reduce the vibration transmission to the main bodies 1 and 19 at the time of steady dehydration.

As an embodiment in which the elastic body has a non-linear load-displacement characteristic, an elastic body 26 in which the pitch of the cylindrical compression coil spring is made uneven as shown in FIG. 5 and an elasticity in which it is made a conical compression coil spring as shown in FIG. There is a body 27 and an elastic body 28 using a vibration-proof rubber as shown in FIG.

Further, as shown in FIG. 7, the end face 29 of the elastic body 28 is slidable on the sliding bodies 17, 23
The elastic body 28 alone may be used without separately providing the sliding body as long as it also has the above function.

Further, the elastic bodies 17 and 24 may be fixed to either the main body covers 14 or 21 or the laundry receiving tub 4, and the point is that one of the elastic bodies 17 and 24 is fixed and the other is slidable.

EFFECTS OF THE INVENTION The present invention has an elastic body interposed between a side wall of a main body cover made of resin and a side wall of a washing tub attached to the upper part of the main body. The other end is fixed to either the main body cover or the laundry receiving tub, and the slidable body attached to the elastic body is slidably contacted with the side wall of the laundry receiving tub or the side wall of the main body cover, whereby the laundry is biased. Even if dehydration is started in this state, the washing tub can be activated without colliding with the main body, and smooth dehydration can be performed.

Further, since the main body cover and the washing tub are made of resin, sufficient rigidity can be ensured, and the main body cover is not deformed by the reaction force of the elastic body that suppresses the vibration of the washing tub, and the resin is Since it does not corrode, it has stable friction characteristics with the sliding body and is highly durable.

Furthermore, even if the main body is installed on an inclined surface, the movement of the laundry receiving tub is suppressed by the elastic body, and the laundry receiving tub is located at substantially the center of the main body, and it is possible to have the same dehydration start-up characteristics as when installed on a horizontal surface. it can.

[Brief description of drawings]

1 is a front sectional view of a dewatering washing machine according to a first embodiment of the present invention, FIG. 2 is a sectional view of the same plane, and FIG. 3 is a vibration isolator for a dewatering washing machine according to a second embodiment of the present invention. 4 is a front sectional view of a cylindrical compression coil spring having an unequal pitch, FIG. 6 is a front view of a conical compression coil spring, FIG. Fig. 8 is a front view of the anti-vibration rubber, Fig. 8 is a front sectional view of a conventional dewatering washing machine, and 9
The figure is an enlarged cross-sectional view of the vibration isolator proposed so far. 1,19 …… Main body, 4 …… Laundry tank, 11,20 …… Vibration isolation mechanism, 1
4,21 …… Main body cover, 17,24,26,27,28 …… Elastic body, 18,2
5,29 …… Sliding body.

Claims (1)

[Claims] 1. A main body of a dehydration washing machine having a resin main body cover provided with a laundry inlet, an operating section and the like mounted thereon, and a vibration damping mechanism for damping vertical vibrations in the main body. Equipped with a suspension-supported washing tub and a compressible elastic body interposed between the side wall of the main body cover and the side wall of the washing tub, and one end of the elastic body is fixed to either the main body cover or the washing tub. An anti-vibration device for a dehydration washing machine, wherein the other end is slidably elastically contacted with either the side wall of the washing tub or the side wall of the main body cover through the sliding body.