Laundry treating apparatus

Patent metadata

Field	Value
Publication number	US-12247342-B2
Application number	US-202318513207-A
Country	US
Kind code	B2
Filing date	Nov 17, 2023
Priority date	Feb 8, 2021
Publication date	Mar 11, 2025
Grant date	Mar 11, 2025

Abstract

Provided is a laundry treating apparatus comprising a drum including: a drum body defining a space to store laundry therein, a front cover, a rear cover, and a drum introduction opening defined at the front cover and configured to communicate with an inside of the drum body; a drying unit configured to supply heated air to the drum body; a fixing panel; a power transmission unit including: a housing, an input shaft, an output shaft, and a gear unit disposed in the housing and configured to transmit rotational motion of the input shaft to the output shaft; a motor comprising including: a stator, and a rotor; and a heat insulation part made of a material having heat conductivity lower than heat conductivity of the housing and configured to reduce an amount of heat that is transferred from the outside of the housing to an inside of the housing.

First claim

What is claimed is:

1. A laundry treating apparatus comprising:
a drum defining a space to receive laundry therein;
a drying unit configured to supply heated air to the drum;
a fixing panel disposed at a position spaced apart from a rear surface of the drum;
a power transmission unit including:
a housing coupled to the fixing panel,
an input shaft having one end disposed at an outside of the housing and an opposite end disposed in the housing,
an output shaft having one end coupled to a rear cover and an opposite end disposed in the housing, and
a gear unit disposed inside the housing and configured to transmit rotational motion of the input shaft to the output shaft; and

a motor coupled to the fixing panel or the housing, and configured to rotate the input shaft,
wherein the housing includes:
a housing body having an opening disposed at a surface thereof that faces the fixing panel,
an accommodation space provided in the housing body to provide a space for mounting the gear unit and communicating with an outside of the housing body through the open hole, and
a housing cover coupled to the housing body and configured to close the opening.

2. The laundry treating apparatus of claim 1 , further comprising a supply passage that is configured to guide air to the rear surface of the drum.

3. The laundry treating apparatus of claim 1 , wherein the housing is coupled to the fixing panel so as to be disposed in a space isolated from a space in which the drum is located.

4. The laundry treating apparatus of claim 3 , wherein the motor comprises:
a stator coupled to the fixing panel or the housing and configured to form a rotating magnetic field, and
a rotor configured to be rotated by the rotating magnetic field and to allow the one end of the input shaft to be coupled thereto.

5. The laundry treating apparatus of claim 4 , wherein the stator is coupled to the housing.

6. The laundry treating apparatus of claim 1 , wherein the housing cover comprises:
a cover body surrounding the opening;
an output shaft through-hole defined at the cover body and configured to allow the output shaft to be inserted thereinto; and
an output shaft support portion protruding from the cover body toward the fixing panel and surrounding the output shaft through-hole.

7. The laundry treating apparatus of claim 6 , further comprising a fastening part that fastens the housing cover to the fixing panel.

8. The laundry treating apparatus of claim 6 , wherein the motor comprises: a stator configured to form a rotating magnetic field, and a rotor configured to be rotated by the rotating magnetic field and to allow the one end of the input shaft to be coupled thereto, and
the cover body comprises a mounting portion configured to allow the stator to be secured thereto.

9. The laundry treating apparatus of claim 6 , wherein the cover body is positioned between the housing body and the fixing panel to block contact between the housing body and the fixing panel.

10. The laundry treating apparatus of claim 6 , wherein the housing cover further comprises a bent portion formed such that a region of the cover body in which the output shaft through-hole is defined protrudes toward the fixing panel.

11. The laundry treating apparatus of claim 6 , further comprising an output shaft bearing disposed inside the output shaft support portion and configured to rotatably secure the output shaft to an inside of the output shaft support portion.

12. The laundry treating apparatus of claim 11 , further comprising:
a seal coupled to the output shaft support portion and configured to restrict introduction of external air into the output shaft bearing.

13. The laundry treating apparatus of claim 1 , further comprising:
a heat insulation part configured to reduce an amount of heat that is transferred from the outside of the housing to the accommodation space.

Assignees

• Lg Electronics Inc

Inventors

• An Yongjun
• Yoon Seongno

Classifications

• D06F37/261

  Tubs made by a specially selected manufacturing process or characterised by their assembly from elements · CPC title

• D06F37/206

  Mounting of motor · CPC title

• D06F37/304 Primary

  Arrangements or adaptations of electric motors · CPC title

• D06F58/08 Primary

  Driving arrangements · CPC title

• D06F37/30 Primary

  Driving arrangements  (control circuits or arrangements D06F34/08) · CPC title