Lifting device and dishwasher

Patent metadata

Field	Value
Publication number	US-10016115-B2
Application number	US-201615137045-A
Country	US
Kind code	B2
Filing date	Apr 25, 2016
Priority date	Apr 24, 2015
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

A lifting device for displacing a receiver for items to be washed in a dishwasher from an initial position into an end position, or vice versa, includes a blocking device configured to automatically block the receiver for items to be washed in at least one intermediate position between the initial position and the end position. The blocking device includes an actuating element which, when actuated, is configured to unlock the blocking device such that the receiver for items to be washed can be displaced from the initial position to the end position, or vice versa, only for so long as the actuating element remains actuated to unlock the blocking device.

First claim

What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims and includes equivalents of the elements recited therein:

1. A lifting device in combination with a receiver for items to be washed in a dishwasher, the lifting device being configured to displace the receiver for items to be washed from an initial position into an end position, or vice versa, the dishwasher comprising a washing container having on a front face an opening which is configured to be closed in a water-tight manner by a door, telescopic rails provided on both sides of the receiver for items to be washed such that the receiver for items to be washed is able to be pushed in or pulled out of the washing container by the telescopic rails, said lifting device comprising:
two first pivoting arms, such that, on each side of the receiver for items to be washed, one of the two first pivoting arms is attached to a corresponding one of the telescopic rails,
two second pivoting arms, such that, on each side of the receiver for items to be washed, one of the two second pivoting arms is attached to a corresponding one of the telescopic rails,
such that, on each side of the receiver for items to be washed, one of the two first pivoting arms and a corresponding one of the two second pivoting arms are arranged spaced apart from one another and fastened in a pivotable manner to an inner face of the washing container,
a drive device which includes an electric motor and a gear mechanism, with the gear mechanism having a vertically extending drive shaft which is connected to the electric motor for imparting rotation to at least one of the first pivoting arms or the second pivoting arms, and
a blocking device configured to automatically block the receiver for items to be washed in at least one intermediate position between the initial position and the end position and including an actuating element which, when actuated, is configured to unlock the blocking device such that the receiver for items to be washed can be displaced from the initial position to the end position, or vice versa, independently of the door and only for so long as the actuating element remains actuated to unlock the blocking device,
wherein the receiver for items to be washed is in a shape of one of a wire frame or a basket configured to permit washing water and rinsing water to pass therethrough, and
wherein the actuating element is a user-actuated element arranged on the receiver for items to be washed.

2. The lifting device of claim 1 , wherein the actuating element is mechanically coupled to the blocking device.

3. The lifting device of claim 1 , wherein the actuating element is coupled to the blocking device using signal technology.

4. The lifting device of claim 1 , wherein the blocking device comprises the gear mechanism which includes a self-locking worm gear.

5. The lifting device of claim 1 , wherein the blocking device comprises a magnetic element configured to magnetically block the gear mechanism.

6. The lifting device of claim 1 , wherein the blocking device comprises an engagement element configured to positively engage in the gear mechanism in order to mechanically block the gear mechanism.

7. The lifting device of claim 6 , wherein the engagement element is spring-pretensioned in a direction of a gear wheel and/or a toothed rod of the gear mechanism.

8. The lifting device of claim 6 , wherein the engagement element is configured to be magnetically displaced.

9. The lifting device of claim 1 , wherein the blocking device comprises a braking element configured to block the gear mechanism by a frictional connection.

10. The lifting device of claim 9 , wherein the braking element is a friction wheel or a brake shoe.

11. The lifting device of claim 1 , wherein the actuating element comprises one of a lever, a pushbutton, or a switch disposed on a front face of the receiver for items to be washed.

12. A dishwasher, comprising:
a washing container having on a front face an opening which is configured to be closed in a water-tight manner by a door,
a receiver for items to be washed;
telescopic rails provided on both sides of the receiver for items to be washed such that the receiver for items to be washed is able to be pushed in or pulled out of the washing container by the telescopic rails, and
a lifting device configured to lift the receiver for items to be washed from an initial position into an end position or lower the receiver for items to be washed from an end position into an initial position, said lifting device comprising:
two first pivoting arms, such that, on each side of the receiver for items to be washed, one of the two first pivoting arms is attached to a corresponding one of the telescopic rails,
two second pivoting arms, such that, on each side of the receiver for items to be washed, one of the two second pivoting arms is attached to a corresponding one of the telescopic rails,
such that, on each side of the receiver for items to be washed, one of the two first pivoting arms and a corresponding one of the two second pivoting arms are arranged spaced apart from one another and fastened in a pivotable manner to an inner face of the washing container,
a drive device which includes an electric motor and a gear mechanism, with the gear mechanism having a vertically extending drive shaft which is connected to the electric motor for imparting rotation to at least one of the first pivoting arms or the second pivoting arms, and
a blocking device configured to automatically block the receiver for items to be washed in at least one intermediate position between the initial position and the end position and including an actuating element which, when actuated, is configured to unlock the blocking device such that the receiver for items to be washed can be displaced from the initial position to the end position, or vice versa, independently of the door and only for so long as the actuating element remains actuated to unlock the blocking device,

wherein the receiver for items to be washed is in a shape of one of a wire frame or a basket configured to permit washing water and rinsing water to pass therethrough, and
wherein the actuating element is a user-actuated element arranged on the receiver for items to be washed.

13. The dishwasher of claim 12 , wherein the actuating element is mechanically coupled to the blocking device.

14. The dishwasher of claim 12 , wherein the actuating element is coupled to the blocking device using signal technology.

15. The dishwasher of claim 12 , wherein the blocking device comprises the gear mechanism which includes a self-locking worm gear.

16. The dishwasher of claim 12 , wherein the blocking device comprises a magnetic element configured to magnetically block the gear mechanism.

17. The dishwasher of claim 12 , wherein the blocking device comprises an engagement element configured to positively engage in the gear mechanism in order to mechanically block the gear mechanism.

18. The dishwasher of claim 17 , wherein the engagement element is spring-pretensioned in a direction of a gear wheel and/or a toothed rod of the gear mechanism.

19. The dishwasher of claim 17 , wherein the engagement element is configured to be magnetically displaced.

20. The dishwasher of claim 12 , wherein the blocking device comprises a braking element configured to block the gear mechanism by a frictional connection.

21. The dishwasher of claim 20 , wherein the braking element is a friction wheel or

Assignees

• Bsh Hausgeraete Gmbh

Inventors

• Gerstner Norbert
• Isbilen Ersin
• Steck Thomas

Classifications

• A47L15/506 Primary

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