Washing machine with structure for absorbing vibration of driving part

• US 20030213271A1
• Filed: 10/10/2002
• Published: 11/20/2003
• Est. Priority Date: 05/14/2002
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lim, Hee Tae, Kim, Dong Won, Chang, Bo Young, Park, Seung Chul
• Granted Patent: US 7,251,962 B2
• Time in Patent Office: Days
• US Class Current: 68/23.3
• CPC Class Codes: D06F 37/40 for driving the receptacle and an agitator or impeller, e.g. alternatively D06F37/304, D06F37/308 take precedence
• CPC Class Codes: F16F 15/10 Suppression of vibrations in rotating systems by making use of members moving with the system by balancing F16F15/22 ; yielding couplings F16D3/00 ; with flywheels acting variably or intermittently F16H ; construction providing resilience or vibration-damping for gear elements F16H55/14

Abstract

A washing machine with a vibration-absorbing structure for preventing the transfer of the vibration of the driving part is disclosed. The washing machine includes a rotor housing 50 in which a rotor is installed and which is rotatably moved, a driving shaft 20, 31, 33 for rotating a washing tub or a pulsator using a rotational force transferred from the rotor housing, a power transferring member 120 for transferring the rotational force of the rotor housing to the driving shaft, a rotor bushing 110 coupled to the rotor housing and through which the driving shaft penetrates to be slidingly moved, and at least one vibration-absorbing member 140, 150 installed on a path where a power is transferred from the rotor housing to the driving shaft, for absorbing vibration of the rotor housing.

Claims

1. A washing machine comprising:

a rotor housing in which a rotor is installed and which is rotatably moved;

a driving shaft for rotating a washing tub or a pulsator using a rotational force transferred from the rotor housing;

a power transferring member for transferring the rotational force of the rotor housing to the driving shaft;

a rotor bushing coupled to the rotor housing and through which the driving shaft penetrates to be slidingly moved; and

at least one vibration-absorbing member installed on a path where a power is transferred from the rotor housing to the driving shaft, for absorbing vibration of the rotor housing.

2. The washing machine of claim 1, wherein the power transferring member is a bracket which is coupled to the rotor housing and at the same time which the driving shaft penetrates to be coupled to.

3. The washing machine of claim 2, wherein the vibration-absorbing member is installed between the rotor housing and the bracket.

4. The washing machine of claim 3, further comprising a coupling member for fixing the rotor bushing and the bracket to the rotor housing and at the same time fixing the vibration-absorbing member.

5. The washing machine of claim 1, further comprising a power breaking member coupled to the driving shaft, for selectively transferring the rotational force of the driving shaft to the washing tub.

6. The washing machine of claim 5, wherein the vibration-absorbing member is installed between the rotor bushing and the power breaking member.

7. A washing machine comprising:

a rotor housing in which a rotor is installed and which is rotatably moved;

a hollow washing tub shaft for rotating a washing tub using a transferred rotational force of the rotor housing;

a pulsator shaft installed inside the hollow washing tub shaft, for rotating a pulsator using the transferred rotational force of the rotor housing;

a rotor bushing coupled to the rotor housing and through which the pulsator shaft penetrates to be slidingly moved;

a bracket which is coupled to the rotor housing and at the same time which the pulsator shaft penetrates and is coupled to, for transferring the rotational force of the rotor housing to the pulsator shaft;

a coupling member for fixing the rotor bushing and the bracket to the rotor housing;

a power breaking member through which the pulsator shaft penetrates to be coupled and which is selectively coupled with the hollow washing tub shaft to transfer the rotational force of the pulsator shaft to the hollow washing tub shaft;

a coupling ascending and descending along an outer circumference of the hollow washing tub shaft and an outer circumference of the power breaking member, for selectively constraining the hollow washing tub shaft and the power breaking member; and

at least one vibration-absorbing member installed on a path where a power is transferred to the pulsator shaft or the hollow washing tub shaft, for absorbing vibration of the rotor housing.

8. The washing machine of claim 7, further comprising a serration part formed to be engaged with an outer circumference of the pulsator shaft and an inner circumference of the bracket.

9. The washing machine of claim 7, wherein an outer circumference of the pulsator shaft and an inner circumference of the bracket have polygonal sections to be engaged with each other.

10. The washing machine of claim 7, wherein the vibration-absorbing member is installed between the rotor housing and the bracket.

11. The washing machine of claim 10, wherein the coupling member comprises:

a body part of which one end is fixedly inserted into the rotor bushing and the other end fixes the vibration-absorbing member while penetrating the bracket; and

a flange part being greater in diameter than the body part, and formed between the one end of the body part and the other end of the body part to prevent the bracket from being in contact with the rotor housing.

12. The washing machine of claim 11, wherein the vibration-absorbing member is a cylindrical shape enclosing an outer circumference of the body part and is inserted into the bracket.

13. The washing machine of claim 12, wherein the vibration-absorbing member has a head part for preventing the flange part from being in contact with the bracket.

14. The washing machine of claim 7, further comprising a serration part engaged with an outer circumference of the pulsator shaft and an inner circumference of the power breaking member each other.

15. The washing machine of claim 7, wherein an outer circumference of the pulsator shaft and an inner circumference of the power breaking member have polygonal sections to be engaged with each other.

16. The washing machine of claim 7, wherein an outer circumference of the power breaking member has a serration part engaged with the coupling.

17. The washing machine of claim 7, wherein the vibration-absorbing member is installed between the rotor bushing and the power breaking member.

18. The washing machine of claim 17, wherein the vibration-absorbing member is a ring-shaped sheet through which the pulsator shaft penetrates.

19. The washing machine of claim 7, wherein the vibration-absorbing member is of a material having elasticity.