JPS59149184A - Vibration dampening apparatus of dehydrating and washing machine - 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 the Invention The present invention relates to a vibration isolating device for a dehydrating washing machine used in a general household.

Conventional configuration and its problems In so-called dehydrating washing machines, the dehydrating and washing tub (hereinafter referred to as the water tank) rotates at high speed during dehydration, but during this rotation, the natural frequency of the vibration system and the imaging frequency due to rotation When these match, a resonance phenomenon occurs and the amplitude (swing) becomes extremely large, resulting in a so-called dangerous speed condition. At this time, by applying a damping structure to the vibration system, the vibration will quickly pass through the resonance point by increasing the amplitude slightly.

The conventional structure will be explained with reference to FIGS. 1 and 2. Reference numeral 01 denotes a main body, in which a washing tank 2 is suspended by a support rod 3 via a suspension 4 for anti-vibration support. Reference numeral 5 denotes a support fixed to the lower part of the side wall of the washing tub 2, and the washing tub 2 is elastically supported by the support 6 on the upper part of the suspension 4. Reference numeral 6 denotes a water tank in which clothes are washed and rotated at high speed to perform dehydration. At this time, it is rare that the clothes are evenly distributed inside the tank 6.
The dewatering action is performed with uneven distribution, and this unevenness in the clothes causes an imbalance in the rotating object and generates 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, during dehydration, the frequency generated by the vibration system matches the natural frequency, the amplitude of the imaging system will become extremely large, causing the camera to bounce up and down, for example, or collide with the outer tank 1. Alternatively, if the rotating shaft becomes damaged at critical speeds, a state is usually called a resonance point. In order to prevent this vibration, the amplitude must be suppressed by a damping mechanism. IA□ Normal damping methods include a method using an air damper and a method using a friction force. For example, the former method using an air damper is as follows: - As shown in FIG. , and a slider 8 having a cylindrical portion that contacts the rubber cap 7 at its inner periphery, and has a damping effect when the air inside the slider 8 flows in and out to the outside by photographing the water tank 6. It is. The damping performance is very stable and the damping effect is also large, but cap 7 and slider 8
Because it requires dimensional accuracy and requires special surface treatment, the cost is extremely high.
There were some drawbacks.

In addition, as a method using frictional force, for example, as shown in FIG. 3 and FIG. Damping device 9 shaped to contact the inverted truncated cone of 8a
, and the weight of the vibration system generates a component force Pf that causes the slider 81L to press the support rod 3, which is attenuated by the friction between the support rod 3 and the slider 8a.

This method has the advantage of being low in cost, but due to the friction between the slider 81L and the damping device 9, the component force P does not act stably, resulting in unstable damping performance and a large damping force. The disadvantage was that it was not possible to obtain

OBJECTS OF THE INVENTION The present invention is intended to eliminate such conventional drawbacks, and aims to reduce costs and obtain stable damping performance by simplifying the damping structure.

Structure of the Invention In order to achieve the above object, the present invention provides a laundry receptacle that houses a dehydration and washing tub, a main body that houses the laundry receptacle, and a support rod that suspends and supports the laundry receptacle from the upper part of the main body. The support rod is made of a plurality of wire rods, and a slider is provided with a collection guide part through which these wire rods can be inserted together, and the slider is provided with a slider that is connected to the collection guide part and has each of the wire rods described above. This is a vibration isolating device for a dehydrating/washing machine that has a plurality of individual guide sections that can be inserted one by one into all branches. It becomes a state where it is branched out,
The inner surface of the individual guide part is elastically pressed, and a frictional force is generated between the wire rod and the individual guide part, thereby ensuring a damping effect, and the wire rod elastically presses the individual guide part. Therefore, even if there is some wear on both sides, the frictional force, that is, the damping force involved, acts stably.

Description of examples An embodiment of the present invention will be described below with reference to the drawings.

In Fig. 5, Fig. 6, and Fig. 7, a support rod 11 made of two #2 iron rods having a diameter of about 1 to 3 mm is inserted into the opening 1o of the lower support 6 fixed to the washing tank 2. penetrate. A spring presser 12 is inserted into the lower end of the support rod 11, and this spring presser 1
A compression type suspension 4 is located above the suspension 2.

On the other hand, a slider 13 made of resin is arranged between the lower support body 6 and the suspension 40. This slider 13 has an elongated hole 13a constituting a collection guide portion having a diameter slightly larger than the sum of the outer diameters of a plurality of iron wires (two in this embodiment) constituting the support rod 11 from the lower end of the slider 13. It extends slightly above the spherical part 13b on the outer periphery of the slider 13,
A groove 130 has a width approximately equal to the inner diameter of the long hole 131L and has a bottom surface that is substantially continuous with the long hole 13a.
is formed from the upper end of the long hole 13a to the upper part of the slider 13. At its upper part, this groove 1.30 is connected to a plurality of narrow grooves 13d constituting the b1 individual guide portion, the width of which is slightly thicker than the outer diameter of one of the plurality of iron wires constituting the support rod 11. It has become. The support rod 11 is formed in the elongated hole 13iL of the slider 13. For example, two wire rods pass through the groove 130 at the same time, and further, wire rods pass through each of the upper narrow grooves 13d.

The support rod 11 is 1 in the upper part with respect to the spherical body 14.
For example, 82 pieces of iron are fixed together, and this spherical body 1
The support rod 11 is suspended from the main body 1 via the support rod 4.

In addition, on both walls of the narrow groove 13d at the top of the slider 13, there are protrusions 1315'(
j- is provided to prevent the iron wire from coming off from the narrow groove 13d to the outer periphery of the slider 13.

FIG. 8 shows a groove 1 in place of the elongated hole 13 & in the above embodiment.
31' is provided, and this has the advantage that injection molding of the slider 13 is simple.

In FIG. 9, a thin hole 13d' is provided in place of the thin groove 13d of the present invention, and it is possible to prevent the iron wire constituting the support rod 11 from coming off the slider 13.

To explain the damping effect of the above-mentioned vibration isolator, the support rod 11
Because the weight of the vibration system such as the washing tank 2 acts on the
In the absence of the slider 13, the two iron wires are parallel, as shown in FIG. However, as described above, this support rod 11 passes through the plurality of narrow grooves 13d of the slider 13, so the iron wire is forcibly intersected by the slider 13, resulting in a spherical surface as shown in FIG. A standing wave-like shape having nodes is created in each part of the body 14, slider 13, and spring presser 12. 2
As mentioned above, the real iron wire tries to return to the state shown in Fig. 110 due to the weight of the vibration system such as the washing tub 2, so it is pressed from the entire inner wall of the narrow groove 13d of the slider 13, and as a result, A large frictional force is generated between the slider 13 and the two iron wires. Such an effect can be equally obtained in the configurations shown in FIGS. 8 and 9. Effects of the Invention As is clear from the above embodiments, the present invention uses a slider to absorb vibrations caused by uneven distribution of clothing. It can be attenuated by the friction/vibration force generated between it and the support rod, and
Even if the slider becomes slightly worn due to friction, the plurality of iron wires always press the narrow grooves of the slider from inside, so there is very little variation in the frictional force.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view of a conventional dehydrating and washing machine, Figs. 2 and 3 are longitudinal cross-sectional views of the same main parts, Fig. 4 is an external perspective view of the slider, and Fig. 6 is an embodiment of the present invention. FIG. 6 is a vertical cross-sectional view of the vibration isolator in this example, showing all the sliders, and the same figure (
A) is a front view, (B) is a sectional view taken along line B-B of (A),
The same figure (C) is a cross section taken along the line c-c of (A)! FIG.
The figures show other embodiments of the same slider, where (A) is a front view, (B) is a sectional view taken along line B-B of (A), and (C) is
9 is a sectional view taken along line C-C of (M), FIG. 9 similarly shows another embodiment, FIG.
FIG. 10C is a sectional view taken along line B, FIG. 10C is a sectional view taken along line CC of FIG. 1...Main unit, 2...Washing tank, 6...
... Dehydration and washing tub, 11 ... Support rod, 13
......Slider, 131L...Elongated hole (
Collection guide part), 13a'...Groove (Collection guide part)
, 13d... Thin groove (individual guide part) 13d'...
... Hosodai (Individual Information Department) 0 Name of agent Patent attorney
Toshio Nakao and one other person. Figure 1 Figure 3 Figure 4 Figure 5 @ Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11

Claims (1)

[Scope of Claims] (1) A laundry receptacle containing a dewatering/washing tub, a main body housing the laundry receptacle, and a support rod suspending and supporting the laundry receptacle from the upper part of the main body, the support rod is composed of a plurality of wire rods, and is provided with a slider having a collection guide part through which these wire rods can be inserted together, and the slider has a plurality of sliders connected to the collection guide part and through which each of the above-mentioned wire rods can be inserted one by one. Vibration isolating device for a washing machine for dehydration and dehydration in which the individual guide portions are branched (Takumi) The vibration isolator for the washing machine for dehydration and washing according to claim 1, in which the collecting guide portion is long and large. Claim 1 having a groove shape
Vibration isolating device for the dehydrating and washing machine described in Section 1. (4) A vibration isolating device for a washing machine for dehydrating and washing as set forth in claim 1, wherein the gathering guide portion has a groove shape with a peripheral wall partially open to the outside. (6) A vibration isolating device for a washing and dehydrating machine according to claim 1, wherein the individual guide portions have a narrow hole shape.