JPS6027320B2 - Driving device for single-tub type dehydrating washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION 1. The present invention relates to a drive device for a single-tub type dehydrating washing machine.

A one-powder type dehydrating washing machine performs washing, rinsing, and dehydration in the same dehydrating washing tub, so when washing and rinsing, the pulsator installed at the bottom of the dehydrating washing tub is rotated, and when spinning, the pulsator is rotated. Rotate the washing tub at high speed. If the rotation of this pulsator and the rotation of the dehydrating washing tub are made to be at the same speed, the structure of the drive device will be simplified, but the rotation of the dehydrating washing tub will be approximately 90% in order to increase the dewatering efficiency.
0 ratio. p. m. The pulsator must be rotated at a high speed (450 to 500 rpm) that does not damage clothing.
0 ratio. p. m. (below), it is necessary to provide the drive device with a speed reduction mechanism. Various types of speed reduction mechanisms have been proposed and implemented in the past, but the present invention provides a drive device equipped with a speed reduction mechanism that has excellent characteristics that cannot be expected from these conventional speed reduction mechanisms. The purpose of the present invention is to provide a highly reliable drive device that has excellent manufacturing and assembly productivity, is easy to disassemble and repair, and is highly reliable. Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows the overall structure of a one-pan type dehydrating washing machine.
In the figure, 1 is an outer tank, 2 is a water receiving tank, and 3 is a dehydrating washing tub. Reference numeral 4 denotes a mounting plate elastically suspended from the outer tank 1 by a vibration isolator 5 and a support punch 6, and supports the water receiving tank 2.

A drive unit 8 and a motor 9 for the dewatering and washing port tank 3 and the pulsator 7 are attached to the lower side of the mounting plate 4. The motor 9 is connected to a pulley 11 of the drive section 8 by a V-belt 10. 12 is a clutch gear that switches between the rotation of the pulsator 7 and the rotation of the dewatering washing tub 3.

FIG. 2 shows a specific structure of the drive section 8 shown in FIG. 1.

In the figure, 13 is an upper cover of the drive section 8, and 14 is its lower cover. The pulley 11 is fixed to a booley boss 15 with bolts 16. Reference numeral 17 denotes a dewatering drive shaft, which is supported by the lower cover 14 by a bearing 18 and is coupled to the pulley boss 15 via a clutch spring 19.

The upper end of the dewatering drive shaft 17 is fixed to a gas case 201 which acts as a brake drum, and a dehydration tank shaft 23 is fixed to the cover flange 22 fixed to the gas case 201 with screws 21.
is fixed, and the dehydration tank shaft 23 is supported by the upper cover 13 by a bearing 24. The drive mechanism of the dehydration washing tub 3 is configured as described above, and the rotation of the motor 9 is controlled by the V belt 10, the pulley 11, the pulley boss 15, and the clutch spring 19.
- is transmitted to the dehydration tank shaft 23 via the dehydration drive shaft 17, gear case 20 and cover flange 22, and is transferred to the dehydration washing tub 3 with 90 yen. p. m. Gives back and forth rotation. The dehydration drive shaft 17 and the dehydration layer shaft 23 are hollow cylindrical shafts, and have a washing drive shaft 26 and a pulsator shaft 27 coaxially supported by a bearing 25 inside, and the washing drive shaft 26 is connected to a pulley boss by a spring pin 28. It is combined with 15.

A gear storage chamber 29 formed by the gear case 20 and the cover flange 22 houses a speed reduction mechanism 30 constituted by a planetary gear, and the upper end of the washing drive shaft 26 and the lower end of the pulsator shaft 27 are connected to this. There is.
This speed reduction mechanism 30 is fixed to the gear case 201 by a plurality of screws 31. The drive mechanism of the pulsator 7 is configured as described above, and the rotation of the motor 9 is transmitted to the deceleration unit 30 via the V-belt 10, the pulley 11, the pulley boss 15, and the washing drive shaft 26, and the pulsator ball 27 of the deceleration mechanism 3 is transmitted. Drive. The clutch gear 12 releases the pulley boss 15 from the dehydrating washing shaft 17 and connects it to the washing driving shaft 26 during washing and rinsing, and releases the pulley boss 15 from the washing driving shaft 26 and connects it to the washing driving shaft 17 during dehydrating.
Combine with 7. Next, the specific structure of the reduction gear foundation 30 of the present invention will be explained with reference to FIGS. 3 and 4. The reduction unit 30 has a sun gear 33 at the center of an outer gear 32,
In between, a planetary gear 34 having a plurality of holes (4 holes) that engages with these is supported by an upper holding plate 35 and a lower holding plate 36 by a shaft 37 so as to be freely rotatable. On the other hand, the upper end of the washing drive shaft 26 forms a joint 26' which is serrated or splined, and is fitted and fixed into the center hole 33' of the sun gear 33 which has been similarly processed. Further, a connecting portion 27' having similar serrations or splines is formed at the lower end of the pulsator shaft 27,
Center 9135' of the upper holding plate 36 that has been similarly processed
It is fixed in place. 38 is a reinforcing plate provided above and below the outer ring gear 32, and 39 is a threaded hole in the screw 31 for fixing the reduction mechanism 30 to the gear case 201.

Reference numeral 40 denotes a retaining ring that prevents the movement of these gear groups in the hammer direction (vertical direction) and integrates this reduction mechanism as one component with the upper retaining plate 35 and the lower retaining plate 36.
It is held by 7.

Reference numeral 41 denotes a stop that is fitted into a groove provided at the base of the coupling portions 26' and 27' of the washing drive shaft 26 and the pulsator shaft 27.

The speed reduction ratio S of the speed reduction mechanism 30 is S=.F, where A is the number of teeth of the sun gear 33 and B is the number of teeth of the outer ring gear.

Now, if A=30B=76, then s=1/3·11. Therefore, the rotation speed of the washing drive shaft 26 (the rotation speed of the dehydration drive shaft 1
7 rotation speed) is 90. p. m. At this time, the rotation speed of the pulsator shaft 27 is approximately 29. p. m. become. As described above, the drive device of the present invention houses the deceleration mechanism 30 inside the gear case 20 which also serves as a brake drum and is connected to the lower end of the dehydration tank shaft 23, and the dehydration drive shaft 17 and the laundry An outer ring gear 3 in which a drive shaft 26 is arranged and the reduction mechanism 30 is fixed to the gear case 20
2, a sun gear 33 coupled to the upper end of the washing drive shaft 26 coaxially provided inside the dehydration drive shaft 17, and a lower end of the pulsator shaft 27 coaxially provided inside the dehydration tank shaft 23. In the structure constituted by a plurality of planetary gears 34 supported by an upper holding plate 35 and a lower holding plate 36, the outer ring gear 3 of this speed reduction mechanism 30 is
2, planetary gear 34, upper holding plate 35 and lower holding plate 3
6 are integrated into one speed reduction unit, and the upper holding plate 35 of this integrated speed reduction unit is connected to the lower end of the pulsator shaft 27, and the planetary gear 34 and the upper end of the washing drive shaft 26 are connected. It is characterized in that it is constructed so that it can be erected by engaging with the sun gear 33 which has been provided.

Since the present invention has the above configuration, it has the effects described below.

Before explaining the effects of the present invention, a typical speed reduction mechanism used in a conventional drive device will be explained with reference to FIG. A gear 53 is provided at the upper end of the drive shaft 51 (washing drive shaft) and the lower end of the driven shaft 52 (pulsator rattan), respectively.
54 is provided, and a large gear 55 meshing with the gear 53;
An intermediate gear consisting of a gear 54 and a mesh gear 56 has a gear case 58 attached to it by a shaft 57. In addition,
A plurality of intermediate gears are provided to balance the strength. 59, 6 Rotary shafts (dehydration drive shaft and dehydration tank shaft) fixed to the river gear case 58.

The above conventional structure requires precision work to mesh the gears,
It has the disadvantage that it is difficult to assemble, and requires a high degree of skill by a skilled person when disassembling it for service and reassembling it.

On the other hand, in the reduction unit of the present invention, since the reduction mechanism is unitized as one component, assembly can be automated, and there is no need to inspect meshing and noise after assembly. Productivity can be significantly improved compared to the previous structure. Also, when disassembly service is performed,
It has many excellent advantages, such as being able to be easily reassembled by replacing the reduction unit.

[Brief explanation of the drawing]

Figure 1: Diagram showing the overall structure of the Ichika type dehydration washing machine, Figure 2
Figure: Longitudinal cross-sectional view of the drive unit of the present invention, Figure 3: Longitudinal cross-sectional view of the speed reduction mechanism of the present invention, Figure 4: Cross-sectional view taken along X and Y lines in Figure 3, Figure 5: Conventional speed reduction mechanism. Figure shown. Symbol, 1...Outer tank, 2...Water tank, 3...Dehydration washing tub, 4
... Honor plate, 5. Anti-vibration equipment, 6. Support village, 7.
... Pulsator, 8... Drive unit, 9... Motor, 1
0...V belt, 11...Pulley, 12...Clutch gear, 13...Upper cover, 14...Lower cover, 1
5... Pulley boss, 16... Bolt, 17... Dehydration drive shaft,
18...Bearing, 19...Clutch spring, 20...
・Gear case, 21...screw, 22...force/flange,
23... Dehydration tank mirror, 24, 25... Bearing, 26...
・Washing drive shaft, 27... Pulsator shaft, 28... Spring pin, 29... Gear storage chamber, 30... Reduction mechanism, 31... Neck, 32... Outer gear, 33... Sun gear , 34... Planet gear, 35... Upper holding plate, 36
... lower holding plate, 37 ... shaft, 38 ... contact plate, 3
9... Threaded hole, 40... Retaining ring, 41... Retaining ring. Figure 1 Figure 5 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. A deceleration mechanism is housed inside a gear case that also serves as a brake drum coupled to the lower end of the dehydration tank shaft, a dehydration drive shaft and a washing drive shaft are arranged below the gear case, and the deceleration mechanism is fixed to the gear case. a sun gear coupled to the upper end of the washing drive shaft coaxially provided inside the dehydration drive shaft; and an upper holder coupled to the lower end of the pulsator shaft coaxially provided inside the dehydration layer shaft. In a structure constituted by a plurality of planetary gears supported by a plate and a lower holding plate, the outer ring gear, the planetary gear, the holding plate and the lower holding plate are connected to one speed reduction mechanism. by combining the upper holding plate of the integrated speed reduction unit with the lower end of the pulsator shaft and meshing the planetary gear with the sun gear connected to the upper end of the washing drive shaft. A drive device for a single-tank dehydrating washing machine, which is characterized in that it can be assembled.