COUNTERBALANCE ASSEMBLY FOR A DISHWASHER DOOR AND ASSOCIATED METHOD

• US 20090072686A1
• Filed: 07/16/2008
• Published: 03/19/2009
• Est. Priority Date: 05/04/2007
• Status: Active Grant

• Current Assignee: Electrolux Home Products Incorporated (AB Electrolux)
• Original Assignee: Electrolux Home Products Incorporated (AB Electrolux)
• Inventors: Helgesen, John, Stewart, Daniel M., Tynes, Ronald G., Duckworth, Jason, Olesen, Jerry, Vooren, Gregory Van
• Granted Patent: US 7,934,783 B2
• Time in Patent Office: Days
• US Class Current: 312/319.400
• CPC Class Codes: A47L 15/4261 Connections of the door to the casing, e.g. door hinges

Abstract

A dishwasher is provided, comprising a door pivotably engaged with a body and a counterbalance assembly coupled therebetween for facilitating pivoting of the door. The counterbalance assembly includes a first and second biasing member, each coupled to the body and serially engaged with a respective first and second flexible element coupled to the door. A guide member is secured to the body and includes a fixed arcuate member defining a first guide track, and a pulley rotatable about an axis and defining a second guide track. The first flexible element is at least partially wrapped about each of the fixed arcuate member and the pulley so as to serially engage the first and second guide tracks. The second flexible element is at least partially wrapped about a second side of the fixed arcuate member so as to engage the first guide track. An associated apparatus and method are also provided.

Claims

1. An appliance, comprising:

an appliance body;

a door pivotably engaged with the appliance body; and

a counterbalance assembly coupled to the appliance body for facilitating pivoting of the door about the engagement with the appliance body, the counterbalance assembly comprising;

a first and a second biasing member, each biasing member being coupled to the appliance body;

a guide member coupled to the appliance body and including a fixed arcuate member defining a first guide track, and a pulley element rotatable about an axis and defining a second guide track, the first guide track of the fixed arcuate member being parallel to and offset from the second guide track of the pulley element along the axis thereof;

a first flexible element having a first end serially engaged with the first biasing member and extending therefrom to at least partially wrap about the pulley element and about a first side of the fixed arcuate member, so as to serially engage the first and second guide tracks, whereafter a second end of the first flexible member, opposed to the first end thereof, is coupled to the door; and

a second flexible element having a first end serially engaged with the second biasing member and extending therefrom to at least partially wrap about a second side of the fixed arcuate member so as to engage the first guide track, the second side of the fixed arcuate member being substantially opposite the first side thereof, whereafter a second end of the second flexible member, opposed to the first end thereof, is coupled to the door.

2. An appliance according to claim 1 wherein the appliance body is a dishwasher appliance body.

3. An appliance according to claim 1 wherein the first guide track of the fixed arcuate member is disposed further laterally outward from the appliance body than the second guide track of the pulley element.

4. An appliance according to claim 1 wherein the pulley element includes a first side disposed toward the first biasing member, and an opposing second side, wherein the first side of the fixed arcuate member is disposed toward the first biasing member, and wherein the first flexible element is configured to extend from the first biasing member and at least partially about the second side of the pulley member in the second guide track thereof, before extending obliquely from the second guide track of the pulley element to the first guide track of the fixed arcuate member at least partially about the first side thereof, before the second end thereof is coupled to the door.

5. An appliance according to claim 1 further comprising a bracket configured to support the guide member and to couple the guide member to the appliance body.

6. An appliance according to claim 1 further comprising a hinge bracket operably engaged between the door and the appliance body and including a flange extending radially from the pivotable engagement therebetween, the flange being configured to receive the second ends of each of the first and second flexible members so as to couple the first and second flexible members to the door.

7. An appliance according to claim 1 further comprising at least one adjustment bracket operably engaged with the appliance body, the at least one adjustment bracket defining a series of holes obliquely-disposed with respect to the guide member, wherein each of the first and second biasing members is configured to engage one of the obliquely-disposed holes of the at least one adjustment bracket so as to adjust a tension on the respective one of the first and second flexible members.

8. A method for facilitating pivoting of a door with respect to a body of an appliance, the body including a guide member secured thereto, the guide member including a fixed arcuate member defining a first guide track and a pulley element rotatable about an axis and defining a second guide track, the first guide track of the fixed arcuate member being parallel to and offset from the second guide track of the pulley element along the axis thereof, the method comprising:

coupling each of a first and a second biasing member to a body of an appliance, the body having a door pivotably engaged therewith;

serially engaging a first end of each of a first and a second flexible element with the respective first and second biasing member;

coupling a second end of each of the first and second flexible elements to the door, the second ends being opposed to the respective first ends of the first and second flexible elements;

wrapping the first flexible element at least partially about the pulley element and about a first side of the fixed arcuate member, such that the first flexible element serially engages the first and second guide tracks; and

wrapping the second flexible element at least partially about a second side of the fixed arcuate member, such that the second flexible element engages the first guide track, the second side of the fixed arcuate member being opposite the first side.

9. A method according to claim 8 further comprising securing a guide member to the body such that the first guide track of the fixed arcuate member is disposed further laterally outward from the body than the second guide track of the pulley element.

10. A method according to claim 8 wherein the pulley element includes a first side disposed toward the first biasing member, and an opposing second side, wherein the first side of the fixed arcuate member is disposed toward the first biasing member, and wherein rapping the first flexible element further comprises wrapping the first flexible element at least partially about the second side of the pulley member in the second guide track thereof, and at least partially about the first side of the fixed arcuate member in the first guide track thereof, such that the first flexible element extends obliquely from the second guide track of the pulley element to the first guide track of the fixed arcuate member.

11. A method according to claim 8 wherein a hinge bracket is operably engaged between the door and the body and includes a flange extending radially from the pivotable engagement therebetween, and wherein coupling the second ends of each of the first and second flexible elements to the door further comprises coupling the second ends of each of the first and second flexible elements to the flange such that the second ends of each of the first and second flexible members are radially spaced apart from the pivotable engagement between the door and the body.

12. A method according to claim 8 wherein at least one adjustment bracket is operably engaged with the body and defines a series of holes obliquely-disposed with respect to the guide member, and wherein coupling each of a first and a second biasing member to the body further comprises coupling each of a first and a second biasing member to one of the obliquely-disposed holes of the at least one adjustment bracket so as to adjust a tension on the respective one of the first and second flexible members.

13. A counterbalance assembly coupled between a door and a body of an appliance, for facilitating pivoting of the door with respect to the body, the counterbalance assembly comprising:

a first and a second biasing member, each biasing member being adapted to be coupled to the body;

a guide member adapted to be coupled to the body and including a fixed arcuate member defining a first guide track, and a pulley element rotatable about an axis and defining a second guide track, the first guide track of the fixed arcuate member being parallel to and offset from the second guide track of the pulley element along the axis thereof,

a first flexible element having a first end serially engaged with the first biasing member and extending therefrom to at least partially wrap about the pulley element and about a first side of the fixed arcuate member, so as to serially engage the first and second guide tracks, whereafter a second end of the first flexible member, opposed to the first end thereof, is adapted to be coupled to the door; and

a second flexible element having a first end serially engaged with the second biasing member and extending therefrom to at least partially wrap about a second side of the fixed arcuate member so as to engage the first guide track, the second side of the fixed arcuate member being substantially opposite the first side, whereafter a second end of the second flexible member, opposed to the first end thereof, is adapted to be coupled to the door.

14. A counterbalance assembly according to claim 13 wherein the first guide track of the fixed arcuate member is adapted to be disposed further laterally outward from the body than the second guide track of the pulley element.

15. A counterbalance assembly according to claim 13 wherein the pulley element includes a first side disposed toward the first biasing member, and an opposing second side, wherein the first side of the fixed arcuate member is disposed toward the first biasing member, and wherein the first flexible element is configured to extend from the first biasing member and at least partially about the second side of the pulley member in the second guide track thereof, before extending obliquely from the second guide track of the pulley element to the first guide track of the fixed arcuate member at least partially about the first side thereof, before extending toward the door.

16. A counterbalance assembly according to claim 13 further comprising a bracket configured to support the guide member and adapted to couple the guide member to the body.

17. A counterbalance assembly according to claim 13 further comprising a hinge bracket adapted to be operably engaged between the door and the body and including a flange adapted to extend radially from the pivotable engagement therebetween, the flange being configured to receive the first and second flexible members so as to couple the first and second flexible members to the door.

18. A counterbalance assembly according to claim 13 further comprising at least one adjustment bracket adapted to be operably engaged with the body, the at least one adjustment bracket defining a series of holes obliquely-disposed with respect to the guide member, wherein each of the first and second biasing members is configured to engage one of the obliquely-disposed holes of the at least one adjustment bracket so as to adjust a tension on the respective one of the first and second flexible members.