JPS5930120B2 - Anti-vibration device for fully automatic washing machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibration isolating device for a fully automatic washing machine, and more particularly to a vibration isolating device for a fully automatic washing machine that is intended to improve its functionality and productivity.

In general, in fully automatic washing machines that serve both as a washing tub and a spin-drying tub, the outer tub is suspended and provided with anti-vibration support in order to reduce the transmission of vibrations due to unbalance caused by unbalanced laundry. It is being said.

Conventionally, when suspending and supporting the outer tank from the upper part of the outer frame, the hanging rod and the outer frame were fixed using an upper slider, a washer, and a snap pin.

That is, FIG. 5 shows the conventional configuration,
The hanging rod 12a is inserted into the upper slider 16a, and the washer 23 and snap pin 24 are inserted into the hole 25 to attach the hanging rod 12a.

However, such a conventional configuration has the drawback that a sufficient damping effect cannot be obtained because the number of parts is large and the movement of the upper slider 16a and the hanging rod 12a is not integrated. Regarding the vibration configuration,
There is a tub support device for a washing machine described in Japanese Patent No. 35346.

However, in this case, the supporting device is used by inserting the upper and lower fittings into a hanging rod in a pre-assembled state through a notch in a support protruding from the opening edge of the outer box. Moreover, after the tool is simply loosely inserted or passed through the hanging rod, the upper end of the hanging rod is tightened with a nut or a header is processed.First, the hanging rod is inserted into the tool. It is not structured so that it is fixed tightly and integrally, and according to this, when the washing machine is used, the ingredients may move up and down along the hanging rod, which causes rattling noise. There are many parts, including tightening the nuts, and when processing the header after inserting the tool, there is an attachment, so the processing requires a lot of work. Furthermore, as mentioned above, when processing the head, it is an integral assembly structure, so even if a part of it breaks down after assembly or during use, the entire assembly can be replaced. In addition, the spherical object and the hanging persimmon were fixed by inserting a pin into the pin hole provided in the hanging rod, and the spherical object and the hanging persimmon were fixed. A vibration isolating device for a dehydrating washing machine was developed in 1973, in which the hanging rod was connected to the rod by press-fitting the bent part of the hanging rod between hook-shaped protrusions provided on the horizontal part of a spherical body. It is described in No. 84278.

However, with such a structure, first, it is necessary to prevent wear between the spherical part of the spherical body and the spherical seat against it,
To prevent rattling noise, between the spherical part and the spherical seat,
It is necessary to use a lubricating oil such as grease, but
This lubricating oil disappears from between the two due to its vibration mode and over time,
If not replenished, the spherical body or spherical seat will wear out and become depleted, producing an unpleasant rattling sound and making it impossible to achieve a smooth vibration-proofing effect. Replenishment was difficult for ordinary household users, and replacing and repairing the spherical body was similarly difficult, making it insufficient as a vibration isolator.

Furthermore, in the above structure, a hook-shaped protrusion is provided on the horizontal part of the spherical body, but in order to mold such a thing, it must be slid in a direction perpendicular to the central axis of the spherical body. It is necessary to use a molding die that slides upwards and downwards of the spherical body, and the manufacturing thereof is complicated and productivity is poor.

The present invention eliminates the drawbacks of the conventional vibration damping device, reduces the number of component parts of the vibration isolating device, makes it easy to manufacture, has a sufficient damping effect, and can be expected to operate smoothly for a long time. The purpose is to provide a vibration isolating device for fully automatic washing machines.

The structure of the vibration isolator for a fully automatic washing machine according to the present invention is such that the outer layer is vibration-proofly supported from the upper part of the outer frame by a hanging rod having a bent portion at the upper end. In the device, the spherical receiver of the corner plate provided on the outer frame is made into a spherical lower surface by an elastic body so that the corner plate is in surface contact with the seat, and the holder is tightened against the bent part of the upper end of the hanging rod. A hanging rod having a tapered portion having a width slightly smaller than the diameter of the hanging rod and a through-hole portion located at a lower portion corresponding to the tapered portion and extending to the spherical portion. A hanging rod having a bent portion is integrally fixed to the upper end of the upper slider, which is provided with a groove portion having a supporting portion and an opening for bending the upper end of the hanging rod to accommodate evil spirits. Next, one embodiment of the present invention will be described with reference to FIGS. 1 to 4.

Here, FIG. 1 is a partial sectional view of a fully automatic washing machine equipped with a vibration isolator according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view of main parts of the vibration isolator, and FIG. The figure is a dry side view of the upper slider in FIG. 2, and FIG. 4 is a partial sectional view taken along line E in FIG. 3, also showing the hanging rod insertion.

In the figure, 1 is an outer frame, 2 is a corner plate, 3 is a basket, 4 is an outer layer, 5 is a support arm, 6 is a motor,
7 is a pulsator, 8 is a reduction gear, 9 is a clutch device,
10 is a timer.

11 is a vibration isolator, 12 is a hanging rod, 13 is a coil spring, 1
4 is a spring seat, 15 is a receiver seat, 16 is an upper slider, 17 is a spherical part, 18 is a bent part, and 19
20 is a groove portion, 20 is a tapered portion, 20a is a through hole portion, 2
1 is a support portion, and 22 is an opening.

That is, in the fully automatic washing machine shown in FIG.
Four corner plates 2, which also serve as reinforcing members for the outer frame 1, are integrally fixed to some of the upper corners of the frame 1 by means such as spot welding.

Inside the outer frame 1, there is provided an outer tub 4 including a basket 3 which stands still and serves as a washing tub during washing, and which rotates at high speed and serves as a spin-drying tub during spin-drying.

The outer tank 4 is made of plastic, for example, and has the corner plate 2 on the cylindrical side wall near the bottom.
Support arms 5 each having a spherical support seat are integrally formed at positions corresponding to the support arms 5 and 5, respectively.

Furthermore, a clutch device 9 is attached to the bottom of the outer tank 4, which transmits the rotational force of the Mokuro to the Palsafe 7 during washing via a speed reduction device 8, and simultaneously to the basket 3 and Palsafe 7 during dehydration. The washing process from washing to spin-drying is carried out in response to the signal.

The outer tank 4 is suspended and supported by a vibration isolator 11 in order to alleviate vibrations during dewatering.

The vibration isolator 11 includes a hanging rod 12 having a large diameter portion at its lower end, a coil spring 13, and a spring seat 14.

In addition, as clearly shown in FIG. 2, the corner plate 2 has a spherical bearing seat 15 and is in surface contact with the spherical portion 17 of the upper slider 16 that fixes the hanging rod 12. The upper end of the hanging rod 12 has a bent portion 18 and is latched to the upper slider 16.

The upper slider 16 is made of an elastic material such as synthetic resin, and has a tapered portion 20 and a support portion 21 in a groove portion 19 into which the hanging rod 12 is inserted. In this way, it constitutes a fitting part and a supporting part for the hanging rod 12.

That is, the width dimension B of the tapered portion 20 is the same as that of the hanging rod 12.
The diameter of the hanging rod 12 is slightly smaller than the diameter of the upper slider 16, and prevents the hanging rod 12 from falling off from the upper slider 16. It also acts as a rotation stopper for the bent portion 18, and by vibrating together with the upper slider 16, the receiver of the corner plate 2 secures surface contact between the seat 15 and the spherical portion 17 of the upper slider 16, thereby improving the damping effect. This is what prevents the decline.

Further, as shown in the drawing, the support portion 21 is provided with a through hole portion 20a located at a lower portion corresponding to the tapered portion 20 and leading to the spherical portion 17, and this through hole portion 20a has a spherical shape. The receiver is the seat 15 and the spherical part 17 of the upper slider 16.
It is designed to serve as a reservoir for lubricating oil such as grease interposed between the

Further, the upper slider 16 has the grooves 19 in three directions as shown in FIG. 3, and has an opening 22 in one direction.
This allows insertion after the bent portion 18 is formed.

In this way, by providing a plurality of grooves 19, when installed in the upper four locations of the outer frame 1, for example, it is possible to correspond to the bent portions 18 of the hanging rod 12 in the direction in which it is inserted. This can be done with a single slider.

However, this does not preclude the use of a groove provided with a single groove, and it is possible to use only one groove.

With the above configuration, the outer layer 4 is lifted and the bent part 18 of the hanging rod 12 is first put into the corner plate 2.
The upper slider 16 is inserted into the bent portion 18 of the protruding hanging rod 12 through the opening 22 of the slider 16, and the bent portion 18 is positioned in the groove 19 and lowered.
This bent portion 18 pushes down the tapered portion 20, and the tapered portion 20 is inserted and tightened all at once.

In this way, the hanging rod 12 and the upper slider 16 can be fixed by using the elasticity of the upper slider 16 having an elastic body structure, and the hanging rod 12 and the upper slider 16 can be fixed together.
It is possible to integrate the movements of the two by mutually configuring them with the upper slider 16 and the hanging rod 12 with its tip bent. It does not require screws and has a reduced number of parts, and in the event of a failure of the above parts, it is a single part replacement that can be replaced by simply lifting the outer tank 4 and removing the upper slider 16 from the hanging rod 12. and
Furthermore, they can be easily fixed by fitting and tightening, and do not cause rattling noise.

Further, the support part 21 of the groove part 19 is provided with a through hole part 20a to the spherical part 17, and the receiver is coated with lubricating oil such as grease between the seat 15 and the spherical part 17 of the upper slider 16. , and the through hole 20a can be filled with the lubricating oil, so that the receiver is always provided between the seat 15 and the spherical surface 17 from the inside of the through hole 20a. The lubricating oil descends and is automatically replenished, and over a long period of time, the bearing prevents wear and tear between the seat 15 and the spherical portion 17, eliminates rattling noise, and provides a smooth vibration-proofing effect. Furthermore, lubricating oil can be easily supplied to the through-hole portion 20a by simply pushing the lubricating oil into the through-hole portion 20a.

Furthermore, since the through hole portion 20a is provided at a lower portion corresponding to the tapered portion 20, the fourth through hole portion 20a is provided.
Although the tapered portion 20 has a protruding portion as shown in the figure, the upper slider 16 can be molded using only an upper mold and a lower mold with protruding pins. , upper slider 1 for forming the tapered part 20
There is no need to use a horizontal type that slides in a direction perpendicular to the central axis of 6, and its manufacture is easy and has good productivity.

In summary, the present invention provides a fully automatic washing machine that securely and easily fixes the hanging rod and the upper slider, does not reduce the damping effect, and has good productivity. This invention can be said to have excellent practical effects.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view of a fully automatic washing machine equipped with a vibration isolator according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view of the main parts of the vibration isolator, and FIG. FIG. 4 is a partial cross-sectional view taken along the line E in FIG. 3, which also shows the suspension rod insertion, and FIG. 5 is a schematic configuration diagram of a conventional vibration isolator. 1...Outer frame, 2...Corner plate, 4...Outer tank, 11...Vibration isolator, 1
2... Hanging rod, 15... Uke is seat, 16
...Upper slider, 17...Spherical part,
18...Bending portion, 19...Groove portion,
20... Taper part, 20a... Through hole part, 21... Support part, 22... Opening part.

Claims (1)

[Claims] 1. In a vibration isolating device for a fully automatic washing machine in which the outer tub is supported from the upper part of the outer frame by a hanging rod having a bent portion at the upper end, the spherical corner plate provided on the outer frame The receiver has a spherical lower surface made of an elastic material so as to be in surface contact with the seat, and has a width slightly smaller than the diameter of the hanging rod for the tensioning part inserted into the bent part of the upper end of the hanging rod. a groove portion having a support portion for a hanging rod located at a lower portion corresponding to the taper portion and having a through hole portion to the spherical surface portion; and a bent portion of the upper end of the hanging rod for insertion. 1. A vibration isolating device for a fully automatic washing machine, characterized in that a hanging rod having a bent portion at its upper end is integrally fixed to an upper slider provided with an opening for washing.