JPS618093A - Vibration dampening apparatus of dehydrator-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 Field of Industrial Application The present invention will be explained with reference to FIGS. 1 and 2 regarding a conventional structure for dual use in dehydration and dehydration used in general households. Reference numeral 1 denotes a main body, in which a washing tank 2 is suspended by a support rod 3 via a suspension 4 and supported in a vibration-proof manner. 6 is a support fixed to the lower part of the side wall of the washing tub 2;
is elastically supported by the support body 6 on the upper part of the suspension 4. Reference numeral 6 denotes a water tank in which clothes are washed and 7 is rotated at high speed for dehydration.

At this time, it is impossible for the clothes to be evenly distributed inside the water tank 6, and dehydration is performed even if the clothes are unevenly distributed. This caused vibrations.

The structure supported by the vibration isolation system such as the support rod 3 and the suspension 4 is called a vibration system, and what is necessarily constituted by this vibration system and vibration isolation system is a natural frequency. If the frequency of vibration generated in the vibration system matches the above-mentioned natural frequency during dehydration, the amplitude of the vibration system will become extremely large (1), for example, the outer tank may jump up and down,
This is usually called a resonance point, where the rotating shaft collides with the motor or the rotating shaft is damaged at critical speeds. In order to prevent this vibration, the amplitude must be suppressed by a damping mechanism.

As shown in FIG. 2, the conventional damping method used is a rubber cap 7 which is placed at the lower end of the support rod 3 and has a seam body on the outer periphery, and which penetrates the support rod 3 at the center. It is formed of a slider 8 having a cylindrical part that contacts the rubber camp 7 at its inner periphery, and has a damping effect when the air inside the slider 8 flows in and out to the outside due to the vibration of the water tank 6. .

However, the damping device configured as described above acts almost vertically, and is effective against the upward and downward bounce of the vibration system.

The damping force hardly acts on horizontal vibrations that collide with the main body 1. Therefore, conventionally, the vibration system collides with the main body 1 by increasing the size of the main body 1 to increase the gap between the vibration system and the main body 1, or by increasing the weight of the vibration system. However, in recent years, the trend has been to make washing machines more compact and lightweight, and it has become impossible to unnecessarily make the main body 1 louder or increase the weight of the vibration system.

Purpose of the Invention The present invention eliminates these conventional drawbacks, and by simplifying the horizontal damping structure, the vibration system can be made more compact and lighter than the main body of the washing machine. The purpose of this is to prevent collisions with other parts and to obtain stable dehydration operation.

Structure of the Invention In order to achieve the above-mentioned object, the present invention provides suspension vibration-proof support for the washing tub from the upper part of the main body by a support rod via a suspension, and also wraps a band around the body of the washing tub. By fixing the end of the body to the main body, damping is achieved by the friction between the band and the body of the dewatering tank, and this frictional damping reduces the amplitude of the vibration system so that it does not collide with the compact main body. This is how it was done.

DESCRIPTION OF EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. Third
In the drawings and FIG. 4, reference numeral 10 denotes a band support bottle fastened to an upper support member 11 fixed to the upper four corners of the main body 1. A band 12 whose end has been processed into a substantially circular shape is hung on the band support bin 1o, and the band 12 is wound around the body of the washing tub 2, with a tension spring 13 interposed in between, and the other end is hooked to the band support bin 10. Reference numeral 13 is provided in the middle of the band 12, and tensioned between the two bands 12 by a tension spring for imparting tension to the band. Such a band 12,
The combination of the tension spring 13 and the band support bottle 1° is attached to the main body 1.
The vibration system is located at the center of the main body 1.

In the above configuration, the band body 12 is attached to the tension spring 1
3, it has a certain tension between it and the body of the washing tub 2. When the vibration system vibrates in such a state, since the end of the band 12 is fixed to the band supporting bin 1o, a frictional force is generated between the band 12 and the body of the PJc washing tank 2. .

This frictional force becomes a damping force and reduces the amplitude in the lateral direction during the natural vibration of the vibration system.

5 and 6 show a second embodiment of the present invention.

In contrast to the first embodiment in which the band 12 is fixed to the band support bin 1o, the band 12 is fixed to the support rod 3. According to this embodiment, since the band support bin 1° can be eliminated, the cost is lower than that of the first embodiment.

FIG. 7 shows a third embodiment of the present invention, and while in the first embodiment both ends of the band 12 are fixed to the same band supporting bin 10, in this embodiment the band 12 is The other end portion is fixed to a band supporting bin 10 located diagonally on the plane of the main body 1, and this band 12. The tension is located at the center of the main body 1.

As is clear from the above embodiments, the washing tub 2 and the band 1
2, and this frictional force acts as a damping force for the vibration system.

Effects of the Invention As described above, the present invention can prevent the vibrating body from colliding with the main body at its natural frequency by providing a lateral damping mechanism for the vibration system, so the main body can be made smaller than before. The damping mechanism of the present invention can be constructed only by adding parts such as a band tension spring and a band support pin, so the structure is simple and extremely inexpensive. damping performance.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of a conventional dehydrating washing machine, Fig. 2 is a sectional view of the vertical damping mechanism in the same dehydrating washing machine, and Fig. 3 is a sectional view of a vertical damping mechanism in the same dehydrating washing machine.
The figure is a perspective view of the main parts of the damping mechanism according to the first embodiment of the present invention, FIG. 4 is a plan view of the main parts of the damping mechanism, and FIG. 5 is a perspective view of the main parts of the damping mechanism according to the second embodiment of the present invention. , FIG. 6 is a plan view of the main part of the damping mechanism, and FIG. 7 is a plan view of the main part of the damping mechanism in a third embodiment of the present invention. 1...Main unit, 2...Washing tank, 3...
...Support rod, 1o...Band support pin, 11
... Upper support body, 12 ... Band body, 13.
...Tensile Shibane. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 @ Figure 4

Claims (1)

[Claims] The washing tank is suspended from the upper part of the main body by a support rod via a suspension, and a band is wrapped around a part or the entire circumference of the body of the washing tank. A vibration isolation device for a dehydrating washing machine that is connected to an object.