JPS6024890A - Two-tub type 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 Application of the Invention] The present invention relates to a two-tank washing machine in which a rotary blade with a large outer diameter that rotates forward and backward in a short cycle is provided in a washing tank.

[Behind the invention]

In recent years, instead of the so-called spiral washing machine, which uses a small-diameter rotary blade at the bottom of the washing tank in forward and reverse directions in a long period of around 30 seconds, it has been replaced by a system that uses a rotary blade with a very large outer diameter compared to the size of the tank bottom in forward and reverse directions in an extremely short period. The method of doing so began to become popular.

FIG. 1 shows one example, in which a large-diameter rotor blade has a highly protruding stirring rod attached to its center. FIG. 2 shows another known example, in which only large-diameter rotor blades are provided at the bottom of the tank.

Both of them rotate forward and reverse in extremely short cycles. The main purpose of these is to wash the entire cloth evenly, without causing any deformation or damage, while preventing the cloth from getting tangled.

The biggest drawback of this method is that the rotor blades are extremely large, so they must be rotated at a low speed of about 100 to 200 rpm. In comparison, one-stage bell reduction requires a combination of a gear reduction mechanism and a belt reduction mechanism, which results in high costs for the reduction mechanism, poor productivity, low reliability, and unpleasant noises such as gear noise. There are also some sounds.

This conventional example is detailed in FIGS. 3 and 4.

That is, a gear box 2 is fixed near the center of the bottom of the washing tank 1, and a rotary blade 3 is fixed to its output shaft. The dog pulley 4 is still fixed to the input shaft of the gear box 3, and this is connected to the base 6 which serves as the lower part of the outer frame 5.
The small pulley 9 of the washing motor 8, which is supported by the support 7, is driven by the small pulley 9.

So, small pulley 9 and dog pulley 4 are approximately 1
/2 to 1/3, and the gearbox performs a reduction of 1/4 to 115, and the gearbox is configured to provide a reduction ratio of 1/7 to 1/10. FIG. 4 shows the configuration of the gearbox.

As you will see, a gearbox is a complex combination of parts and costs a lot of money. However, if the accuracy of parts cannot be achieved, accidents such as gear wear and abnormal noise may occur. In other words, reliability issues arise. Moreover, maintaining this reliability requires cost.

[Purpose of the invention]

In contrast, the purpose of the present invention is to obtain a short-cycle forward/reverse drive type washing machine using the V-belt drive, which has been used for a long time in two-tank washing machines, and the purpose is to reduce costs. This is due to a significant decrease in reliability and an improvement in reliability.

[Summary of the invention]

The gist of the present invention is to obtain a two-stage reduction using an intermediate idle pulley in order to obtain the necessary reduction ratio with a V-belt, and furthermore, this idle pulley is provided at a corner of the bottom of the washing tank.

In other words, in a two-tank washing machine, which is used in a small space and is used without adjusting the belt tension for 7 to 8 years during its lifespan after assembly, a small diameter pulley is the minimum in consideration of belt slippage. However, a diameter of 50 mm is required. Then, if the V-belt is decelerated by one stage, for example, to reduce the speed by 1/8, the diameter is 4'00.
A mm dog pulley is required, but there isn't enough space to fit it. Even if you force it in, the pitch between the pulleys is small and the wrap angle of the small pulley is small, causing it to slip.

[Embodiments of the invention]

In the present invention, this problem is solved by 5'+',' with the configuration shown in Figure 5 and below.
, never. That is, the large goo is directly connected to the small pulley 9 of the washing motor 8 and the rotating shaft of the rotation R3! 7-20 is not directly driven by a V-belt, but a second intermediate idler pulley is provided.

A bearing @ 21 is screwed to a corner position of the bottom of the washing tank which is as far away as possible from the washing motor 8 and has a sufficient spacing 1-1 between the tub pulleys, and two upper and lower idle pulleys are pivotally supported on this.

The small pulley 9 of the washing motor 8 and the large pulley 22 of the idle pulley are driven by a V-belt. The reduction ratio is around 1/3. According to this, small pulley -9
Even though the outer diameter of the dog pulley 22 is 50 m, the outer diameter of the dog pulley 22 is 150 m.
distance, 1 tray distance between pulleys fC' l-s = 300wm
If it is taken, the wrapping angle is sufficient υ, and there is almost no problem with slipping.

Next, the small pulley 23 of the idle pulley and the rotor 3
A large pulley 20, which is directly connected to the rotating shaft, is connected with a V-belt. At this time as well, the reduction ratio of about V3 is sufficient. Then, a reduction ratio of 3x3=9 can be easily achieved for 1.-tal.

Figure 6 shows the configuration of a part of the idler pulley, and shows the bearing sleeve 2.
Bearing metals 30 are press-fitted into the center of 1 at the top and bottom. An idler pulley consisting of a small pulley 23 and a large pulley 22 is fixed to the lower end of a rotating shaft 31 which has a thrust receiver collar on its upper part. This structure is extremely simple.

FIG. 7 shows a plan view of the washing tank 1, with small pulleys 9,
It shows the relationship between idle pulleys 21 and 22 and large pulley = 20.

From now on, if you select an appropriate position on the bottom of the tank to clean the idle pulleys 21 and 22, the pitch between the pulleys tl will be sufficient.
It can be seen that +Z2 can be obtained.

〔Effect of the invention〕

The present invention has the following advantages over the conventional method of combining the gear box and the belt speed reduction described above.

■ Since there is no gearbox, the cost is extremely low.

■ Extremely high productivity as there is no gearbox.

(■ High reliability as there is no gearbox.

■ Since there is no gearbox, there is no unpleasant gear Tη and it is quiet.

■ Since there is no gear box, the life is long and there is no wear on the gears.

■ Although it is a belt-driven two-stage reduction, an idle pulley is used, and the idle pulley can be installed in a place where the distance between the pulleys can be increased by one inch, so the wrap angle can be increased and slips can be achieved easily as a belt drive. Quiet operation and long service life are maintained.

■ Since the idle pulley is installed at the bottom of the washing tank, there is no fluctuation in the distance between the idle pulley and the rotation P (Zori), no assembly error, and no slipping.Also, even if the washing tank moves downwards due to hot water washing, the relative The position does not change.

■ Since most parts can be assembled into the washing tank, assembly productivity and disassembly/assembly during service are easy.

[Brief explanation of drawings]

Figures 1 and 2 are perspective views of a conventional two-tank flushing machine;
Fig. 3 is a cross-sectional view of a conventional two-tank type flushing machine, Fig. 4 is a cross-sectional view of a gear box of a conventional two-tank type flushing machine, and Fig. 5 is a two-tank type showing an embodiment of the present invention. Cross-sectional view of the flow machine, No. 6
The figure is a block diagram of a part of the idle pulley of the present invention, and FIG. 7 is a plan view of the washing tank of the present invention.

Claims (1)

[Claims] 1. A rotary blade is provided at the center of the inner bottom of a washing tank whose planar shape is approximately rectangular, and by transmitting the forward and reverse rotation of the washing motor to this rotary blade via a reduction mechanism, the rotary blade is rotated in a short cycle. For forward and reverse rotation, the small-diameter pulley of the washing motor is vibration-proofly supported on the pace that is located at the bottom of the outer frame and serves to support the entire machine, and the large-diameter pulley is rotatably supported at an appropriate location on the bottom of the washing tank. The idler pulleys are connected by a belt, and then a small pulley that rotates coaxially and integrally with the idler pulley drives a large pulley that is integrated with the shaft that drives the rotor blade, so that the rotation of the motor to be washed is at least one rotation.
A two-tank type rotator, characterized in that a reduction ratio of /6 or more is transmitted to the rotor to drive it.