Search

JP-7856758-B2 - Clothing processing equipment

JP7856758B2JP 7856758 B2JP7856758 B2JP 7856758B2JP-7856758-B2

Inventors

  • チョ ホンチュン
  • イ チョンミン
  • アン インクン
  • ユン チュハン

Assignees

  • エルジー エレクトロニクス インコーポレイティド

Dates

Publication Date
20260511
Application Date
20221026
Priority Date
20211102

Claims (12)

  1. A drum comprising a drum body for receiving clothes, a front cover forming the front surface of the drum body, a rear cover forming the rear surface of the drum body, and a drum input opening that penetrates the front cover and communicates with the inside of the drum body, A fixed panel is provided at a position separated from the aforementioned rear cover, A housing fixed to the aforementioned fixed panel, an input shaft with one end located outside the housing and the other end located inside the housing, an output shaft that penetrates the fixed panel, with one end fixed to the rear cover and the other end located inside the housing, and a power transmission unit located inside the housing that includes a gear section for transmitting the rotational motion of the input shaft to the output shaft, A motor comprising a stator fixed to the aforementioned fixed panel or housing and forming a rotating magnetic field, and a rotor to which one end of the input shaft is fixed and which rotates due to the rotating magnetic field, It includes an oil leak prevention unit that prevents the lubricating oil supplied to the gear section from being discharged from the housing, Multiple oil leak prevention units are arranged in separate areas that are isolated from each other. The output shaft is tilted at an angle of less than 90 degrees relative to the ground. The gear section includes a ring gear fixed to the housing, a driving gear fixed to the input shaft, a cage fixed to the output shaft, and a driven gear fixed to the cage and connecting the driving gear and the ring gear. When the rotor rotates, the input shaft rotates. When the driving gear rotates on the input shaft, the driven gear meshed with the driving gear rotates. When the driven gear rotates, the cage, the output shaft, and the drum fixed to the output shaft rotate . The housing includes a housing base having an input shaft through-hole through which the input shaft passes; an input shaft support portion provided on the housing base and surrounding the input shaft through-hole; a housing circumferential surface extending from the edge of the housing base toward the fixed panel and forming a receiving space to which the gear portion is mounted; a cover body fixed to the housing circumferential surface and closing the receiving space; an output shaft through-hole provided so as to pass through the cover body and into which the output shaft is inserted; and an output shaft support portion protruding from the cover body toward the fixed panel and surrounding the output shaft through-hole. The oil leakage prevention section includes a first sealing section that seals the space between the input shaft support section and the input shaft, a second sealing section that seals the space between the output shaft support section and the output shaft, and a third sealing section that seals the space between the circumferential surface of the housing and the cover body. A garment processing apparatus comprising: a first sealing portion being a ring-shaped gasket fixed inside the input shaft support portion; a second sealing portion being a ring-shaped gasket fixed inside the output shaft support portion; and a third sealing portion being a ring-shaped gasket .
  2. The present invention further includes a cover fixing plate provided on the circumferential surface of the housing, extending in a direction away from the circumferential surface of the housing along the radial direction of the input shaft through hole, and to which the cover body is fixed, The garment processing apparatus according to claim 1 , wherein the third sealing portion is provided as a ring-shaped gasket located between the cover body and the cover fixing plate.
  3. The housing further includes a cover fixing plate provided on the circumferential surface of the housing, extending in a direction away from the circumferential surface of the housing along the radial direction of the input shaft through hole, and to which the cover body is fixed, The garment processing apparatus according to claim 1, wherein the third sealing portion includes a ring-shaped sealing projection protruding from the cover body toward the cover fixing plate, and a ring-shaped sealing groove provided in the cover fixing plate for receiving the sealing projection .
  4. The sealing projection includes a ring-shaped first projection centered on the output shaft through-hole, and a ring-shaped second projection centered on the output shaft through-hole but having a diameter longer than the diameter of the first projection. The garment processing apparatus according to claim 3 , wherein the sealing groove includes a first groove for receiving the first projection and a second groove for receiving the second projection.
  5. The garment processing apparatus according to claim 3 , wherein the sealing projection and the sealing groove are joined by heat fusion.
  6. The garment processing apparatus according to claim 5 , wherein the third sealing portion is provided in the shape of a ring surrounding the sealing projection and further includes a gasket located between the cover body and the cover fixing plate.
  7. The input shaft bearing is further fixed inside the input shaft support portion and rotatably fixes the input shaft to the input shaft support portion, The garment processing apparatus according to any one of claims 1 to 6 , wherein the first sealing portion is provided so as to be located between the input shaft bearing and the free end of the input shaft support portion.
  8. The garment processing apparatus according to claim 7 , further comprising a first fixing portion provided in the input shaft support portion for preventing the first sealing portion from being pulled out from the input shaft through hole.
  9. The output shaft bearing is further fixed inside the output shaft support portion and rotatably fixes the output shaft to the output shaft support portion, The garment processing apparatus according to claim 7 , wherein the second sealing portion is provided so as to be located between the output shaft bearing and the free end of the output shaft support portion.
  10. The garment processing apparatus according to claim 9 , further comprising a second fixing portion provided in the output shaft support portion for preventing the second sealing portion from being pulled out from the output shaft through hole.
  11. A first input shaft bearing is fixed inside the input shaft support portion and rotatably fixes the input shaft to the input shaft support portion, The input shaft is fixed inside the input shaft support portion, rotatably fixing the input shaft to the input shaft support portion, and further includes an input shaft second bearing located between the input shaft first bearing and the free end of the input shaft support portion. The garment processing apparatus according to any one of claims 1 to 6, wherein the first sealing portion is provided so as to be located between the first input shaft bearing and the second input shaft bearing, or between the second input shaft bearing and the free end of the input shaft support portion.
  12. A first output shaft bearing is fixed inside the output shaft support portion and rotatably fixes the output shaft to the output shaft support portion, The output shaft is fixed inside the output shaft support portion, rotatably fixing the output shaft to the output shaft support portion, and further includes an output shaft second bearing located between the first output shaft bearing and the free end of the output shaft support portion. The garment processing apparatus according to claim 9, wherein the second sealing portion is provided so as to be located between the first output shaft bearing and the second output shaft bearing, or between the second output shaft bearing and the free end of the output shaft support portion.

Description

This invention relates to a garment processing apparatus. Garment processing equipment is a general term encompassing washing machines for washing clothes (items to be washed or dried), dryers for drying clothes, and devices capable of both washing and drying clothes. A washing machine is generally equipped with a tub for storing water, a washing drum located inside the tub for receiving clothes, and a drive unit (washing drive unit) for rotating the washing drum. A dryer is generally equipped with a drying drum for receiving clothes, a drive unit (drying drive unit) for rotating the drying drum, and a heat exchange unit that supplies air to the drying drum to remove moisture from the clothes. The washing drive unit typically includes a stator fixed to the tub and forming a rotating magnetic field, a rotor that rotates due to the magnetic field, and a rotating shaft that penetrates the tub and connects the washing drum and the rotor. The drying drive unit, on the other hand, generally includes a motor, a pulley fixed to the motor's rotating shaft, and a belt (power transmission unit) that connects the rotational motion of the pulley to the drying drum. The washing machine drive unit is configured such that the motor's rotating shaft connects the washing drum and the rotor. For washing and spinning clothes, the washing machine drive unit needs to either control the rotation speed of the washing drum or change its rotation direction. When the motor's rotating shaft directly connects the washing drum and the rotor, the rotation speed and direction of the washing drum can be easily controlled. On the other hand, conventional drying drive units generally have a structure in which a power transmission unit, such as a belt, connects the drying drum and the motor's rotating shaft. This is because dryers generally do not require a high rotational speed for the drying drum or a change in its rotational direction; therefore, the drying drum can be rotated by a power transmission unit such as a belt. However, if the rotational speed and direction of the drying drum can be changed, the movement of clothes inside the drum can be controlled, which can lead to shorter drying times and improved drying performance in the dryer. Some conventional dryers are equipped with a drying drive unit that connects the rotor and drying drum to a reduction gear (power transmission unit) (Korean Patent Publication No. 10-2020-0065931). This drying drive unit is designed so that the input shaft connected to the rotor and the output shaft connected to the drying drum form a coaxial configuration, which is expected to shorten drying time and improve drying performance. The aforementioned dryer allows for various control over the rotation speed of the drying drum, as well as changes in its rotation direction. This may reduce the durability of the drying drum (where the rotation axis is fixed) and the panels supporting the drying drum. Furthermore, in the aforementioned dryer structure, drum vibrations are transmitted to the reduction gear and the fixed panel to which the reduction gear is attached. Therefore, there is a risk that the durability of the reduction gear and the fixed panel may decrease during drum vibrations. Furthermore, while lubricating oil is stored inside the reduction gear of the aforementioned dryer, if the drying drum rotates around a rotation axis horizontal to the ground, the joint surface of the reduction gear housing is located on the circumferential surface of the housing, and there is a risk of lubricating oil leaking to the outside through this joint surface. An example of a garment processing device is shown. An example of the cabinet structure and support panel is shown. Here is an example of a drum. An example of a dry area is shown. An example of a fixed panel is shown. An example of a power transmission section is shown. An example of the coupling structure for the power transmission unit, fixed panel, and drum is shown. This shows the structure of the drum. An example of an oil leak prevention device is shown. The following describes in detail an embodiment of the garment processing device, referring to the attached drawings. Figure 1 shows an example of a garment processing apparatus 100. The garment processing apparatus 100 includes a cabinet 1 and a drum 2 rotatably mounted inside the cabinet, providing a space for receiving garments (items to be washed or dried). As shown in Figure 2, the cabinet 1 includes a drying unit 3 that supplies high-temperature dry air (air at a temperature higher than ambient temperature, air with a dryness level higher than that of room air) to the drum 2 to remove moisture from the garments. The cabinet 1 includes a front panel 11 that forms the front surface of the garment processing device, and a base panel 17 that forms the bottom surface of the garment processing device. The front panel 11 is provided with an input opening 111 that communicates with the drum 2, but the inp