KR200159014Y1 - A device for preventing oil-leak from a washing machine - Google Patents

Abstract

The present invention relates to a leakage preventing device of a washing machine, characterized in that the oil chamber 220 is press-fitted in the upper center side of the lower drum 200 to prevent the leakage of the lubricating oil inside the planetary gear device 107 and As the oil chamber 220 is press-fitted into the upper inside of the lower drum 200, the lubricating oil inside the upper drum 108 in which the planetary gear device 107 is disposed is completely blocked from flowing down the driving shaft 101. By doing so, it is possible to prevent noise from occurring in the planetary gear device 107 and at the same time to prevent wear and to prevent other parts from being damaged. 107) Even if the viscosity of the lubricating oil is low and the risk of oil leakage is high, the sealing effect can be effectively increased, thereby increasing the reliability of the product.

Description

Leakage prevention device of washing machine

The present invention prevents the leakage of oil inside the planetary gear device, which is the driving device, and prevents the occurrence of noise and reduction of the life of the planetary gear device by lubricating oil, and prevents the leaked lubricant from damaging other parts in advance. It is about.

The conventional washing machine has a main body 1 forming an appearance as shown in Figs. 1 and 2, and the inner side of the main body 1 is suspended at a predetermined height through a plurality of suspension bars 3 to wash and The washing tank 5 is installed to prevent vibration when dewatering and is disposed to store the washing water. A motor 7 is provided on the outer bottom surface of the washing tank 5 to generate power by applying power. On one side of the motor (7) is provided with a power transmission device (100) for receiving a driving force of the motor (7) via a belt (9) to drive a stirring blade or a dehydration tank to be described later, the washing tank (5) Inside the dehydration tank 13 is rotatably disposed to dehydrate the laundry by centrifugal force due to the rotation of the power transmission device 100, the power transmission device 100 on the inner bottom side of the dehydration tank (13). Transfers the power of the motor (7) Agitating blade 15 is rotatably disposed to form a water stream in the wash water accommodated in the dehydration tank 13 while rotating in the reverse direction, and the water level (not shown) is provided on the upper side of the main body 1. The water supply means 17 which detects the water level of the wash water stored in the said washing tank 5 by a detection apparatus, and supplies wash water according to the laundry into the said washing tank 5 is arrange | positioned, The lower part of the said washing tank 5 is provided. On one side, the solenoid valve 19 is disposed to discharge the contaminated washing water generated during washing and rinsing, and one end of the solenoid valve 19 is provided with the washed water that is discharged as the solenoid valve 19 is operated. The drain hose 21 is disposed so as to be discharged outward.

As shown in FIG. 2, the power transmission device 100 freely rotates in a straight line with the drive shaft 101 and the stirring shaft 102 at a predetermined interval in the center of the dehydration tank 13 and the stirring blade 15. It is mounted upright, and the pulley 103 wound around the belt 9 is fixedly coupled to the lower end of the drive shaft 101, and the drive coupling 104 and the lower drum 105 are inserted into the upper side thereof. On the outside of the drive coupling 104 and the lower drum 105, a clutch spring 106 for selectively transmitting power is wound.

The upper drum 108 is coupled to the upper side of the lower drum 105 and the planetary gear device 107 is coupled therein, and the dehydration tank 13 is fixed to the upper end of the upper drum 108. The dehydration shaft 109 is inserted and rotatably integrated, and the upper and lower cases 112 are disposed outside the dehydration shaft 109 and the lower drum 105 through bearings 110 and 111. , 113 is fixedly installed, the upper side of the planetary gear device 107 is coupled to the stirring shaft 102 and the connector 114 is rotated integrally.

The upper drum 108 and the clutch spring 106 have a brake band 116 and a clutch lever 117 for controlling the operation of the upper drum 108 and the clutch spring 106 according to the operation of the brake lever 115. It is elastically installed, the one-way clutch 118 is mounted on the outside of the lower drum 105 to enable rotation in only one direction.

Oilless bearings 119 and 120 are press-fitted into the lower drum 105, and a washer 121 is inserted between the oilless bearing 119 and the flange portion 101a of the drive shaft 101 to allow the upper drum 108 to be inserted into the lower drum 105. The internal lubricant is prevented from leaking.

The washing machine configured as described above puts laundry and detergent in the dehydration tank 13, selects washing conditions by an operation unit (not shown), and then operates the washing machine to supply the washing water into the washing tank 5 through the water supply unit 17.

When the washing water supplied in the washing tank 5 reaches the amount necessary to wash the laundry put into the dehydrating tank 13, the motor 7 starts to rotate, and the rotational force of the motor 7 is transmitted through the belt 9. It is transmitted to the power train 100.

The power of the motor 7 is transmitted to the pulley 103 through the belt 9, the brake band 116 and the one-way clutch bearing 118 to suppress the rotation of the dehydration shaft 109, the dehydration tank 13 Is fixed and the rotation speed of the motor 7 is decelerated by the planetary gear device 107 through the drive shaft 101, and is stored in the dehydration tank 13 by rotating only the stirring blade 15 via the stirring shaft 102. The washing is performed by forming a stream of water in the washing water.

When the washing is finished in this way, the solenoid valve 19 disposed under the washing tank 5 is turned on (opened), and the contaminated washing water stored in the washing tank 5 and the dehydrating tank 13 is drained. It is discharged to outside through 21).

Then, when the drainage of the wash water is completed, the solenoid valve 19 is turned off and the rinsing wash water is supplied into the washing tank 5 through the water supply means 17. Next, when the water level required for rinsing the laundry is reached, the stirring blade 15 is rotated forward and backward according to the driving force of the power transmission device 100 that has received the driving force of the motor 9 as described above. Wash.

When the final rinsing stroke is repeated by repeating such a rinsing cycle several times, the rinsing completed in the washing tank 5 and the dehydrating tank 13 through the solenoid valve 19 is turned on again. It goes through the dehydration stroke discharged to the outside through the hose (21).

During the dehydration stroke, the drain motor (not shown) of the brake lever 115 is pulled, and the brake band 116 is separated from the upper drum 108 connected to the dehydration shaft 109 and opens the clutch spring 106. Since the clutch lever 117 is disengaged, the driving coupling 104 fitted to the drive shaft 101 and the lower drum 105 connected to the upper drum 108 are integrated by the winding force of the clutch spring 106. The power of the pulley 103 rotates the dehydration tank 13 and the stirring blade 15 together without passing through the planetary gear device 107 to perform dehydration.

However, the conventional washing machine configured as described above has a problem that the lubricant is occasionally leaked between the washer 121 and the oilless bearing 119 or the flange portion 101a, so that the leaked lubricant may adversely affect other parts. In addition, there was a problem that noise occurs inside the planetary gear device 107.

Therefore, the present invention was devised to solve the above problems, and the object of the present invention is to prevent the leakage of lubricants inside the reduction gear to prevent noise and reduced sleep, and at the same time other components due to leaked lubricants. It is to provide a leakage preventing device of a washing machine to prevent damage.

1 is an overall longitudinal cross-sectional view schematically showing the configuration of a conventional washing machine,

2 is a partially enlarged longitudinal sectional view schematically showing the configuration of a driving device of a conventional washing machine;

3 is a partial longitudinal sectional view schematically showing a configuration of a driving apparatus of a washing machine according to an embodiment of the present invention.

Explanation of symbols for main parts of the drawings

101: drive shaft 102: stirring shaft

107: planetary gear device 108: upper drum

109 dehydration 200: lower drum

210: fixing groove 220: oil seal

Leakage preventing device of the washing machine according to the present invention made to achieve the above object is a drive shaft for transmitting power, a planetary gear device connected to one end of the drive shaft to reduce the rotational speed of the drive shaft, the drive shaft and planetary gear device In the washing machine having an upper drum and a lower drum on the outside of the drive shaft and the planetary gear device to cover the seal, the sealing member is press-fitted on the upper side of the lower drum to prevent leakage of the lubricating oil inside the planetary gear device It features.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIG.

Parts that are the same as those shown in FIG. 2 are given the same reference numerals and the same names.

As shown in FIG. 3, the drive shaft 101 and the stirring shaft 102 are installed so as to rotate in a straight line at a predetermined interval, and the power of the drive shaft 101 is transmitted to the upper side of the drive shaft 101. A planetary gear device 107 is disposed to receive and decelerate. A connector 114 which is gear-coupled with the stirring shaft 102 and rotates integrally is coupled to an upper side of the planetary gear device 107. An upper drum 108 is disposed outside the planetary gear device 107, a lower drum 200 is disposed below the upper drum 108 and an outer side of the drive shaft 101, and the upper drum 108 is disposed. The upper inner side of the) is installed so that the dehydration shaft 109 is fastened and fixed to the upper end of the dehydration tank (not shown), the upper drum 108 is operated on one side of the brake lever (not shown) According to the operation of the upper drum 108 The brake band 116 that is arranged.

An oilless bearing 119 is inserted and disposed between the lower drum 200 and the driving shaft 101 to smoothly rotate the driving shaft 101, and is fixed to an upper center side of the lower drum 200. The oil chamber 220 is press-fitted into the groove 210 to prevent the lubricating oil of the planetary gear device 107 disposed inside the upper drum 108 from flowing down.

Next will be described the operation of the leakage preventing device of the washing machine according to an embodiment of the present invention configured as described above.

First, the washing stroke will be described. As the drive shaft 101 is rotated by receiving power, the planetary gear device 107 is operated to decelerate and rotate the stirring shaft 102. At this time, as the brake band 116 and the clutch spring are operated in accordance with the operation of the brake lever (not shown), the dehydration shaft 109 is not rotated as the upper drum 108 and the lower drum 200 are fixed.

Finishing the washing stroke as described above, in the dehydration stroke as the brake band 116 and the clutch spring is operated and fixed from the upper drum 108 and the lower drum 200 in accordance with the operation of the brake lever The drive shaft 101 and the lower drum 200 and the upper drum 108 are integrated so that the power of the drive shaft 101 does not pass through the planetary gear device 107 to the lower drum 200 and the upper drum 108. It is transmitted and dehydration is performed by rotating the stirring shaft 102 and the dehydration shaft 109 simultaneously.

During operation as described above, the oil chamber 220 press-fitted to the upper center side of the lower drum 200 effectively prevents the lubricating oil of the planetary gear device 107 disposed inside the upper drum 108 from flowing down. Accordingly, noise generation and parts of the planetary gear device 107 are prevented from being worn, and leakage of other parts is prevented from being damaged.

According to the leak prevention device of the washing machine according to the present invention as described above, as the oil chamber is pressed into the upper end of the lower drum, the lubricant inside the upper drum where the planetary gear device is disposed is completely blocked from flowing along the drive shaft. This prevents noise from occurring in the planetary gear unit and at the same time prevents wear and prevents other parts from being damaged. Particularly, in the case of a high temperature summer, the lubricating oil inside the planetary gear unit is prevented. Even if the viscosity is high and there is a high risk of leakage, the sealing effect can be effectively increased, thereby increasing the reliability of the product.

Claims (2)

A drive shaft for transmitting power, a planetary gear device connected to one end of the drive shaft to reduce the rotational speed of the drive shaft, and an upper drum and a lower drum outside the drive shaft and the planetary gear device to cover the drive shaft and the planetary gear device. In the washing machine provided with, the oil leakage prevention of the washing machine, characterized in that the oil chamber 220 is press-fitted on the upper center side of the lower drum 200 to prevent leakage of the lubricating oil inside the planetary gear device 107 Device. The apparatus of claim 1, wherein the lower drum (200) has a fixing groove (210) formed at an upper side thereof so that the oil chamber (220) is press-fitted.