Cooking appliance provided with a door latch assembly

Patent metadata

Field	Value
Publication number	US-12104797-B2
Application number	US-202117486438-A
Country	US
Kind code	B2
Filing date	Sep 27, 2021
Priority date	Sep 30, 2020
Publication date	Oct 1, 2024
Grant date	Oct 1, 2024

Abstract

A cooking appliance includes at least a muffle defining a cooking cavity, a frame and a door hinged to the frame. An aperture is provided in the frame for gaining access to the cooking cavity, the door allowing the aperture to be selectively opened and closed by means of a rotation of the door around a rotation axis. The cooking appliance further includes a latch assembly configured to establish a releasable engagement between the frame and the door when the door is in the closed position. The latch assembly includes a latch member and a latch receiver. One of the latch member and the latch receiver is integral to an insert coupled to the door and is applied adjacently to a first side of the door, the first side of the door being the side of the door farthest from the rotation axis.

First claim

What is claimed is:

1. A cooking appliance, comprising:
a muffle defining a cooking cavity;
a frame defining an aperture accessing the cooking cavity;
a door configured to selectively cover the aperture by rotation of the door around a rotation axis, the door including a structural element extending longitudinally along a side of the door, wherein the structural element forms a mullion between a pair of glass panes; and
a latch assembly configured to establish a releasable engagement between the frame and the door, the latch assembly comprising:
a latch member including an engagement portion having a ridged portion;
a latch receiver including a protrusion; and
an insert directly coupled to the structural element of the door, the insert including a snap coupler configured to secure the insert to the structural element, wherein one of the latch member and the latch receiver is integral to the insert and the insert is configured to receive an edge of an internal glass of the pair of glass panes.

2. The cooking appliance according to claim 1 , wherein the latch member is coupled to the frame and the latch receiver is coupled to the door.

3. The cooking appliance according to claim 2 , wherein the engagement portion of the latch member is a cantilevered portion positioned at a distance from the frame and the ridged portion curves at least partly towards the door.

4. The cooking appliance according to claim 2 , wherein the latch member further includes a mounting portion configured to be fastened to the frame, the mounting portion including at least one hole configured to receive a fastener.

5. The cooking appliance according to claim 4 , wherein the latch member further includes a connecting portion extending from the mounting portion to the ridged portion, the connecting portion substantially perpendicular to the mounting portion.

6. The cooking appliance according to claim 1 , wherein the protrusion of the latch receiver includes a first portion which acts as an abutment surface for the ridged portion of the latch member when said door is in a closed position, the first portion of the protrusion in the form of a wall of the protrusion farthest from the frame.

7. The cooking appliance according to claim 6 , wherein the protrusion further includes a second portion adjacent to the first portion which acts as a cam surface for the ridged portion of the latch member during a relative movement of the ridged portion to the first portion of the protrusion and/or from the first portion of the protrusion.

8. The cooking appliance according to claim 1 , wherein the snap coupler is operative between the insert and the structural element, the snap coupler comprising:
a flap integral to the insert, wherein an opening is defined in said structural element, the opening configured to receive the flap such that the snap coupler secures the insert to the structural element upon vertical displacement of the insert.

9. The cooking appliance according to claim 1 , wherein the latch member is made of a strip of a flexible spring steel and the latch receiver is made of a body of a plastic material.

10. The cooking appliance according to claim 1 , wherein the latch member is a single piece and the latch receiver is a single piece.

11. The cooking appliance according to claim 1 , wherein said latch assembly includes an additional latch member and an additional latch receiver, the additional latch member coupled to the frame and the additional latch receiver being coupled to the frame on a side of the door opposite to the side of the door adjacent the other latch assembly.

12. A cooking appliance, comprising:
a muffle defining a cooking cavity;
a frame defining an aperture accessing the cooking cavity;
a door configured to selectively cover the aperture by rotation of the door around a rotation axis, the door including a structural element extending longitudinally along a side of the door, wherein the structural element forms a mullion between a pair of panes; and
a latch assembly configured to establish a releasable engagement between the frame and the door, the latch assembly comprising:
a flexible latch member including an engagement portion having a ridged portion;
a latch receiver including a protrusion, wherein one of the latch member and the latch receiver is coupled to the door and the other one of the latch member and the latch receiver is coupled to the frame and the latch assembly does not extend beyond an outer wall of the door; and
an insert directly coupled to the structural element of the door, wherein the one of the latch member and the latch receiver coupled to the door is coupled to the insert and the insert is configured to receive an edge of an internal pane of the pair of panes.

13. The cooking appliance according to claim 12 , wherein the insert is removably coupled to the door and includes a snap coupler configured to secure the insert to the door.

14. The cooking appliance according to claim 13 , wherein the snap coupler is operative between the insert and the structural element.

15. The cooking appliance according to claim 12 , wherein the protrusion of the latch receiver includes a first portion which acts as an abutment surface for the ridged portion of the latch member when said door is in a closed position.

16. The cooking appliance according to claim 12 , wherein when the door is in a closed position the protrusion of the latch receiver generally mates with the ridged portion of the latch member.

17. A method of installing a latch assembly on a cooking appliance comprising the steps of:
installing one of a latch member and a latch receiver on a frame adjacent to a side of an access opening farthest from a rotation axis; and
installing the other one of the latch member and the latch receiver on a door, the other one of the latch member and the latch receiver being integral to an insert removably coupled to the door, adjacent to a side of the door farthest from the rotation axis, wherein installing the other one of the latch member and the latch receiver on the door includes displacement of the insert until a flap on the insert is received within an opening in a structural element of the door, the structural element extending longitudinally along a side of the door, wherein the structural element forms a mullion between a pair of panes and the insert receives an edge of an internal pane of the pair of panes.

18. The method of installing a latch assembly on a cooking appliance of claim 17 , further comprising the step of:
forming the structural element by bending and cutting a single metal sheet.

19. The method of installing a latch assembly on a cooking appliance of claim 17 , further comprising the step of:
forming a mounting portion, a connecting portion, a ridged portion, and a tip on the latch member by bending a single strip of flexible material.

Assignees

• Whirlpool Emea Spa
• Whirlpool Co

Inventors

• Balekundri Abubackar M

Classifications

• E05Y2900/30

  for domestic appliances · CPC title

• E05C19/06

  in which the securing part if formed or carried by a spring and moves only by distortion of the spring, e.g. snaps · CPC title

• E05C19/02

  Automatic catches, i.e. released by pull or pressure on the wing (E05C19/06 takes precedence {; with locking means E05B63/22}) · CPC title

• F24C15/022 Primary

  Latches · CPC title