Damped closure assembly for a dishwasher appliance

Patent metadata

Field	Value
Publication number	US-2019021573-A1
Application number	US-201715652304-A
Country	US
Kind code	A1
Filing date	Jul 18, 2017
Priority date	Jul 18, 2017
Publication date	Jan 24, 2019
Grant date	—

Abstract

A damped closure assembly for a door of a dishwasher appliance includes a striker mounted to the door and a latch assembly mounted to a tub of the dishwasher appliance. The latch assembly includes a latch body that defines a guide slot and a slide member including guide pins that are received within the guide slot to slidably and rotatably position the slide member within the latch body. A spring element is attached to the slide member for urging the slide member toward a retracted position and a damping element is operably coupled to the slide member for damping the movement of the slide member toward the retracted position. The slide member is latched in an extended position when the door is open, but when the door is closed, the striker unlatches the slide member and allows the spring/damper combination to slowly move the door to the closed position.

First claim

What is claimed is:

1 . A dishwasher appliance defining a vertical, a lateral, and a transverse direction, the dishwasher appliance comprising:
a cabinet; a tub positioned within the cabinet, the tub defining a wash chamber for receipt of articles for washing; a door rotatably mounted to the cabinet and being movable between an open position and a closed position; and a damped closure assembly comprising:
a striker mounted to the door;
a latch body attached to the tub and defining a guide slot;
a slide member defining a first guide element and a second guide element that are received within the guide slot for slidably coupling the slide member to the latch body;
a spring element attached to the slide member for urging the slide member toward a retracted position; and
a damping element operably coupled to the slide member for damping the movement of the slide member toward the retracted position.

2 . The dishwasher appliance of claim 1 , wherein the slide member further defines a striker slot for receiving the striker as the door is moved toward the closed position.

3 . The dishwasher appliance of claim 1 , wherein the slide member defines a contact surface that protrudes from the latch body, the contact surface being aligned with the striker along the transverse direction such that the striker engages the contact surface as the door is moved toward the closed position.

4 . The dishwasher appliance of claim 1 , wherein the guide slot is substantially L-shaped and includes a long segment and a short segment, and wherein the slide member is latched in an extended position when the first guide element is positioned in the short segment and the slide member is movable toward the retracted position when the first guide element is positioned in the long segment.

5 . The dishwasher appliance of claim 4 , wherein the slide member rotates when the striker engages the slide member such that the first guide element is rotated into the long segment of the guide slot.

6 . The dishwasher appliance of claim 4 , wherein a slot angle is defined between the long segment of the guide slot and the short segment of the guide slot, the angle being between about 95° and 120°.

7 . The dishwasher appliance of claim 6 , wherein the slot angle is about 110°.

8 . The dishwasher appliance of claim 4 , wherein the first guide element is a first pin and the second guide element is a second pin, the first pin and the second pin being separated by a pin distance, the pin distance being greater than half of a length of the long segment of the guide slot.

9 . The dishwasher appliance of claim 8 , wherein the pin distance is about 60% of the length of the long segment of the guide slot.

10 . The dishwasher appliance of claim 1 , wherein the dishwasher appliance further comprises a gasket positioned between the tub and the door for providing a fluid seal when the door is in the closed position, and wherein the spring element is selected such that a tension value of the spring element is sufficient to compress the gasket by a predetermined amount.

11 . The dishwasher appliance of claim 1 , wherein the damped closure assembly further comprises a spring pin configured for receipt within one of a plurality of apertures defined through the latch body, the spring element extending between the slide member and the spring pin such that the tension in the spring element may be adjusted by moving the spring pin between the plurality of apertures.

12 . The dishwasher appliance of claim 1 , wherein the latch body defines a guide chamber that extends along a plane parallel to a top of the tub, the slide member being positioned within the guide chamber.

13 . The dishwasher appliance of claim 1 , wherein the latch body is positioned between the tub and the cabinet at a top of the tub along the vertical direction and a center of the tub along the lateral direction.

14 . The dishwasher appliance of claim 1 , wherein the latch body is positioned behind a front fascia of the cabinet, the front fascia defining an aperture for receiving the striker when the door is moved toward the closed position.

15 . A damped closure assembly for a door of a dishwasher appliance, the dishwasher appliance comprising a cabinet and a tub positioned within the cabinet and defining a wash chamber for receipt of articles for washing, the damped closure assembly comprising:
a striker mounted to the door; a latch body attached to the tub and defining a guide slot; a slide member defining a first guide element and a second guide element that are received within the guide slot for slidably coupling the slide member to the latch body; a spring element attached to the slide member for urging the slide member toward a retracted position; and a damping element operably coupled to the slide member for damping the movement of the slide member toward the retracted position.

16 . The damped closure assembly of claim 15 , wherein the slide member further defines:
a striker slot for receiving the striker as the door is moved toward the closed position; and a contact surface that protrudes from the latch body, the contact surface being aligned with the striker along the transverse direction such that the striker engages the contact surface as the door is moved toward the closed position.

17 . The damped closure assembly of claim 15 , wherein the guide slot is substantially L-shaped and includes a long segment and a short segment, and wherein the slide member is latched in an extended position when the first guide element is positioned in the short segment and the slide member is movable toward the retracted position when the first guide element is positioned in the long segment, wherein the slide member rotates when the striker engages the slide member such that the first guide element is rotated into the long segment of the guide slot.

18 . The damped closure assembly of claim 17 , wherein a slot angle is defined between the long segment of the guide slot and the short segment of the guide slot, the angle being between about 95° and 120°.

19 . The damped closure assembly of claim 17 , wherein the first guide element is a first pin and the second guide element is a second pin, the first pin and the second pin being separated by a pin distance, the pin distance being greater than half of a length of the long segment of the guide slot.

20 . The damped closure assembly of claim 15 , wherein the damped closure assembly further comprises a spring pin configured for receipt within one of a plurality of apertures defined through the latch body, the spring element extending between the slide member and the spring pin such that the tension in the spring element may be adjusted by moving the spring pin between the plurality of apertures.

Assignees

• Haier Us Appliance Solutions Inc

Inventors

• Esterle Christopher D
• Weaver Mark

Classifications

• A47L15/4259 Primary

  Arrangements of locking or security/safety devices for doors, e.g. door latches, switch to stop operation when door is open · CPC title

• A47L15/22

  Rotary spraying devices · CPC title

• A47L15/502

  Cutlery baskets · CPC title

• E05B17/0041 Primary

  Damping means (for vehicles E05B77/42; time locks with retarders E05B43/00) · CPC title

• E05B17/0025

  Devices for forcing the wing firmly against its seat or to initiate the opening of the wing (E05B15/022, E05B65/0817, E05B81/20, E05C19/14 take precedence) · CPC title