JP2516961B2 - Anti-vibration device for dehydration washing machine - Google Patents

Description

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 is disclosed in, for example, Jitsuko Sho 49-30710.
As shown in the publication, the structure is as shown in FIG. That is, in the figure, 1 is the main body of the dehydration washing machine,
Reference numeral 2 denotes a washing / dehydrating tank having a plurality of dewatering holes 3 formed in its inner peripheral wall, 4 denotes a washing receiving tank having the washing / dehydrating tank 2 rotatably installed therein, and 5 denotes a central bottom portion of the washing / dehydrating tank 2. The agitating blade 6 is a transmission mechanism, and internally includes a reduction gear for washing, a switching clutch for washing and dehydration, and a brake for dehydration. 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 an anti-vibration mechanism that is suspended from the upper corner of the main body 1 by a support rod via a spring, and suspends and supports the washing tub 4.

In the dewatering washing machine having this structure, vibrations of the washing tub 4 in the horizontal direction and the vertical direction at the time of dewatering due to unevenness of the object to be dehydrated are damped by the vibration isolating mechanism 11 so that the vibrations are not transmitted to the main body 1. However, the vibration-damping mechanism 11 is
The anti-vibration may be inadequate due to the frictional damping of the water, so that the washing tub 4 may collide with the main body 1 or the safety switch (not shown) may be operated to stop the operation to perform a normal dehydration action. Was not done.

In order to solve such a problem, the inventors have shown in FIG.
An anti-vibration device for a dehydration washing machine having the structure shown in FIG. 4 has already been proposed. In FIGS. 3 and 4, from 1
The members shown in FIG. 14 are the same as those shown in FIG. Reference numeral 12 denotes an elastic body, one end of which is fixed to the laundry receiving tub 4 by a claw of the supporting member 13. 14 is a sliding body, an elastic body with a claw
It is attached to the other end of 12. Reference numeral 15 is a flat plate-shaped sliding member fixed to the main body 1, and a cushioning member 16 is provided between the main body 1 and the sliding member.
By virtue of this configuration, the vibration transmission to the main body 1 is relaxed. Even if the article to be dehydrated is unevenly distributed during dehydration, whirling vibration of the laundry receiving tub 4 at the time of dehydration activation is caused by the elastic body 12 and the sliding member. It is suppressed by the sliding frictional force between the moving plate 14 and the sliding member 15 to prevent the laundry receiving tub 4 from colliding with the main body 1 and reduce the vibration transmission to the main body 1. Problems to be Solved by the Invention As described above, the structure already proposed has a remarkable function and effect as a vibration isolator for the dehydration washing machine, but the four minimum gaps between the main body 1 and the washing tub 4 are almost equal. Since the main body 1 has a substantially square planar shape, depending on the installation location, there are restrictions in the front-rear direction or the left-right direction, which makes installation difficult.

The present invention solves such a problem, reduces vibration during dehydration, and further minimizes the body width in either the front-rear direction or the left-right direction of the main body to improve the installability. The purpose of the present invention is to provide an anti-vibration device.

Means for Solving the 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 substantially rectangular cross-section, and a suspension mechanism supported by a vibration isolating mechanism at a substantially central portion inside the main body. A laundry receiving tub having a substantially circular cross section, a dehydrating tub located inside the laundry receiving tub and driven to rotate by a motor provided at the lower part of the same, and one end fixed to the outer wall of the laundry receiving tub and the other end of the main body An elastic body slidably contacting an inner wall, the elastic body forming a pair with a wide gap side between the laundry receiving tub outer wall and the main body inner wall and a narrow gap side adjacent to the main body; There are provided at least two pairs diagonally and the elastic coefficient of the elastic body on the wide side of the gap is set lower than the elastic coefficient of the elastic body on the narrow side of the gap.

Action With the above configuration, since the characteristics of each pair of elastic bodies of at least two pairs are different, the whirling vibration of the washing tub at the initial stage of dehydration activation becomes an elliptical motion, and the minimum gap between the main body and the washing tub is wide. By making a large shake in one direction and suppressing a shake in a narrower direction, the width of one side of the main body can be minimized to prevent vibration transmission to the main body and improve the installability of the main body. You can

Example Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.
The structure of the main part of the present invention is as shown in FIG. 1. However, the same parts as those in FIGS. 2 to 4 are designated by the same reference numerals and the description thereof will be omitted.

In the figure, 12 is an elastic body, preferably formed of a compression spring or the like having a non-linear stress-strain characteristic, and a pair of 12a and 12b each having a different total length and elastic coefficient are used. Reference numeral 13 is a supporting member fixed to the laundry receiving tub 4, and one end of the elastic body 12a or 12b is mounted by a claw. Reference numeral 14 is a vibrating body, which is attached to one end of the elastic body 12a or 12b by a claw. 15 is a vibrating member, which is approximately L
The suspension support member of the vibration-damping mechanism 11 is provided in the upper corner portion of the main body 1 by the protruding portion 15a provided in the upper end portion.
It is fixed to 1a with screws.

It should be noted that the protrusion 15a may be omitted and the cushioning member 16 may be fixed to the main body 1. In any case, the vibration member 15 is the main body.
A plurality of them are fixed to the corners of the side walls facing each other. A metal or a resin material is used as the material of the sliding body 14 and the vibration member 15.

 Next, the operation of the configuration of this embodiment will be described.

When the articles to be dehydrated are unevenly distributed in the washing / dehydrating tub 2 during dewatering, whirling of the washing tub 4 occurs, but the elasticity of the elastic contact between the washing tub 4 and the sliding member 15 is interposed. It has already been described that the bodies 12a and 12b and the sliding body 14 act to suppress the whirling of the bodies and to reduce the transmission of vibration to the main body 1.

At this time, the elastic member 12a and 12b each with different length or modulus of elasticity, the longest total length when the elastic coefficient of the elastic member to the minimum gap wide direction l ₁ of the main body 1 and washing the receiving tank 4 is the same, or Provide one with a low modulus of elasticity and
By providing an opposite elastic body to l ₂ , it becomes possible to largely swing in the direction l _{1 in} which the minimum gap is wide with respect to the whirling vibration of the washing tub 4 at the initial stage of dehydration activation. That is, the vibration amplitude of the laundry receiving tub 4 at the initial stage of activation draws an elliptic trajectory. In the direction l ₂ where the minimum gap between the main body 1 and the washing tub 4 is narrow,
Even if the elastic body 12a has the same elastic coefficient, the set length is short, so that the elastic coefficient is high and movement is suppressed. Further, when the one having a high elastic coefficient is provided, the whirling of the laundry receiving tub 4 can be surely suppressed. Therefore, even if the minimum gap l ₂ between the main body 1 and the laundry receiving tub 4 is minimized, it is possible to prevent the collision with the main body 1 at the time of starting. When the dehydration further progresses and the washing / dehydrating tub 2 reaches high-speed rotation, the vibration amplitude of the laundry receiving tub 4 becomes smaller than that at the start-up, so that the main body 1
There is no fear of collision with the above, and since the restraining force in at least one direction can be made smaller than in the case where the minimum gap in all directions is narrowed, vibration transmission to the main body 1 at high speed rotation can be kept small.

EFFECTS OF THE INVENTION The present invention provides an elastic body having one end fixed to the outer wall of the washing tub and the other end slidably abutting the inner wall of the main body.
At least two pairs are provided diagonally of the main body by forming a pair with a wide gap side between the outer wall of the washing tub and the inner wall of the main body and a narrow side of the gap adjacent thereto, and the elastic coefficient of the elastic body on the wide side of the gap is By setting it to be lower than the elastic coefficient of the elastic body on the side where the gap is narrow, it is possible to improve the degree of freedom in installation and reduce the transmission of vibration to the main body.

[Brief description of drawings]

FIG. 1 is a partial sectional plan view of a dehydration washing machine according to an embodiment of the present invention, FIG. 2 is a side sectional view showing a conventional dehydration washing machine, and FIG. 3 is a dehydration washing machine previously proposed. Enlarged side view showing the main part,
FIG. 4 is a partially sectional plan view of the dehydration washing machine. 1 ... Main body, 2 ... Washing / dehydrating tank, 4 ... Washing tank, 11
...... Vibration proof mechanism, 12,12a, 12b …… Elastic body, 13 …… Support member, 14 …… Sliding body, 15 …… Sliding member, 16 …… Cushioning member.

Claims (1)

(57) [Claims] 1. A main body of a dehydrating and washing machine having a substantially rectangular cross section, a washing tub having a substantially circular cross section suspended and supported by an anti-vibration mechanism inside the main body, and a washing basin located inside the washing tub. The elastic body is provided with a dehydration tub which is rotatably driven by a motor provided in the lower part of the receiving tub, and an elastic body whose one end is fixed to the outer wall of the laundry receiving tub and whose other end is slidably brought into contact with the inner wall of the main body. Are provided at least two pairs diagonally of the main body so as to form a pair with a wide gap side between the outer wall of the washing tub and the inner wall of the main body and a narrow side of the gap adjacent thereto, and the elasticity of the wide side of the gap. A dewatering washing machine in which the elastic coefficient of the body is set lower than the elastic coefficient of the elastic body on the side having the narrow gap.