JPS58165891A - Vibration-proof apparatus of dehydration washer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dehydrating washing machine, and in particular to a vibration isolating device for a dehydrating washing machine suitable for reducing lateral vibrations of an outer tub caused by mismatching of objects to be dehydrated during dehydration. Regarding.

In a dehydrating washing machine, water particles are unevenly distributed in the dehydrating tank, resulting in imbalance and whirling vibration of the dehydrating tank. There are two resonance points in a dehydrating washing machine.The primary vibration is translational vibration, and the secondary vibration is mainly rolling vibration.In order to suppress these vibrations, conventional vibration isolators for washing machines have two resonance points, as shown in Figure 2. The primary damping, that is, the horizontal damping, is provided by the sliding friction between the slider 21 and the outer tank support 22, and the secondary damping, that is, the vertical damping, is provided by the sliding friction between the slider 21 and the hanging rod 23.

Recent #1 washers have been made lighter by using plastic for the outer tank and dewatering tank. As a result, the horizontal frictional force, which was previously applied by the frictional force due to the weight of the suspended parts, has been reduced. Furthermore, due to the increase in the unbalanced center cover due to the decrease in total mass and the decrease in damping force, the operating rate of the 9 safety switches, which often cannot pass the primary resonance point due to the unbalanced laundry that occurs, is still lower. .

The purpose of the present invention is to increase the horizontal damping force, which has been reduced due to the reduction of the weight of the hanging part, without increasing the weight, and to prevent lateral vibration of the outer tank during dewatering even if there is an imbalance in the material to be dewatered. Dehydration washing? The purpose of the present invention is to provide an I1m vibration isolator.

The present invention is characterized not only by the sliding friction due to weight, but also by interposing a slider presser between the outer tank support part and the slider, so that the outer tank support part is held down by the slider and slider retainer. This is what I did.

An embodiment of the present invention will be described below with reference to FIG. 1 and FIGS. 3 to 7.

In FIG. 1, 1 is an outer frame of a dehydrating washing machine, and 3 is a dehydrating tank, which is installed concentrically within an outer tub 2.

There are many dehydration holes 4 on the side of the dehydration tank 3, which together with a pulsator 5 in the center play the role of washing and dehydration.

6 is a transmission, 7 is a motor, and these are fixed to the lower surface of the outer tank 2. Pulleys 8 and 9 transmit the rotation of the motor 7 to the transmission 6 via the V-belt 10. Further, the outer tank 2 is vibration-proofly supported from the upper part of the outer frame 1 via a hanging rod 14, a slider 16, a compression spring 17, and the like. 12 is a spherical seat,
13 is a stopper, 15 is an outer tank support portion, and 18 is a spring seat.

As shown in FIGS. 3 and 4, the slider 16 has a spherical surface portion 16a that spherically slides on the outer tank support portion 15, and a hanging rod 1.
The cylindrical portion 16b on which the cylindrical portion 4 slides, and the hook portion 16C formed at the tip of the cylindrical portion 16b are molded from synthetic resin such as synthetic resin or nylon.

A slider presser 19 formed in the shape of a plate is interposed between the hook 116c of the slider 16 and the outer tank support portion 15, and the slider presser 19 is made of, for example, nylon, which is different from the material of the support f1515. Ru. Moreover, since this slider presser 19 is formed into a cup shape and is provided with a notch 19a in the radial direction as shown in FIG. 5, the inner diameter can be increased.

In assembling, first slider holder 19 and slider 16
are arranged as shown in FIG. 3 so as to sandwich the outer tank support part 15. By pushing the slider holder 19 in the direction of the arrow, the slider holder 19 slides along the tapered part attached to the slider 16 while increasing its inner diameter, and returns to its original inner diameter when it passes the hook part 16C. Fixed as shown. The free length t of the slider presser 19 is made larger than the assembled length t'. Therefore, the slider holder 19 changes from a free state to a compressed state, and the slider holder 19 itself acts as a spring, and the outer tank support part 15 is pressed from above and below by the slider 16 and the slider holder 19.

At this time, the sliding friction force is given by the outer tank's own weight and the spring force of the slider holder, and the frictional force is larger than the conventional case where only the outer tank's own weight is used.

Furthermore, the assembled length t' of the slider holder 19 was changed by changing the length of the cylindrical portion 16b of the slider 16, or the spring stiffness was changed by changing the shape and material of the slider holder 19.]
By doing so, the surface pressure, that is, the sliding friction force acting between the outer tank support portion 15, the slider 16, and the slider presser 190 can be arbitrarily changed, and appropriate damping can be given to the system.

6 and 7 show other embodiments of the present invention, and the same reference numerals as in FIGS. 3 and 4 indicate the same parts.

Since the slider holder 19 consists of only the cylindrical part 19b and the spherical part 19C, it is easy to process and has a structure in which the spherical part 190 of the slider holder 19 and the outer tank support part are in contact with a spherical surface with the same radius. Therefore, a large contact area can be obtained, and damping action can therefore be provided smoothly.

According to the present invention, by inserting the slider presser between the slider and the outer tank support part, it is possible to apply an arbitrary sliding damping force in the horizontal direction regardless of the weight of the hanging part. Therefore, it is effective in reducing the lateral vibration of the dehydration tank caused by the unsteadiness of the material to be dehydrated during dehydration.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a dehydrating washing machine equipped with the vibration isolator of the present invention, FIG. 2 is a sectional view of a conventional vibration isolator, and FIGS.
The figures are cross-sectional views of one embodiment of the vibration isolating device of the present invention, FIG. 3 is a view before inserting the slider holder, FIG. 4 is a view after inserting the slider holder, FIG. 5 is a front view of the slider holder, and FIG. 7 is an enlarged sectional view showing another embodiment of the present invention, and FIG. 7 is a front view of the slider presser. 14... Hanging rod, 15... Outer tank support part, 16...
Slider, 16a... spherical part, 16b... cylindrical part,
16C... Hook portion, 17... Anti-vibration spring, 19... Slider holder. ￥J 1 Part 27 Part 31 ￥1 Part 4 Part 6 Figure 7 Figure 9

Claims (1)

[Claims] In a dehydrating washing machine consisting of a dehydrating tank with a pulsator installed in the center of the bottom, an outer tank enclosing the dehydrating tank, and an outer frame that supports the outer tank via a hanging shaft and a vibration-proof spring, and a slider that slides spherically on the outer tank support, by interposing a slider holder, so that the outer tank support is held down by the slider and the slider holder. Machine vibration isolator.