Home cooking appliance with a side swing oven door having an integral self capturing latch

• US 9,372,001 B2
• Filed: 09/06/2013
• Issued: 06/21/2016
• Est. Priority Date: 09/06/2013
• Status: Active Grant

• Current Assignee: BSH Home Appliances Corporation (Robert Bosch GmbH)
• Original Assignee: BSH Home Appliances Corporation (Robert Bosch GmbH)
• Inventors: Gayle, James, Geiger, Joseph
• Primary Examiner(s): MERLINO, ALYSON MARIE
• Application Number:
  US14/019,618
• Publication Number:
  US 20150068509A1
• Time in Patent Office: 1,019 Days
• Field of Search: 292 63- 65, 292/69, 292/95, 292109-111, 292/121, 292/122, 292/124, 292/129, 292/96, 292/98, 292/99, 292/240, 292/195, 292/219, 292/220, 292/222, 292/224, 292/229, 292/197, 292/198, 292/341.15, 292/341.17, 292/341.18, 292/341.19, 292/332, 292/334, 292/336, 292/DIG.49, 292/DIG.55, 292/DIG.69, 292/DIG.71, 292/78, 292/79, 292/73, 126/190, 126/197, 126/192, 126/220, 126/273.R, 126/1.R, 126/42, 126/39.BA
• US Class Current: 1/1
• CPC Class Codes: E05B 15/0006 Devices for aligning wing and frame; Anti-rattling devices for vehicle doors E05B83/367
• CPC Class Codes: E05B 17/0025 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 Class Codes: E05B 2063/0026 Elongated, e.g. stud-like, striker entering into an opening in which movable detent means engage the elongated striker
• CPC Class Codes: E05C 19/04 Ball or roller catches
• CPC Class Codes: F24C 15/022 Latches

Abstract

A home cooking appliance with a side swing door is provided. The home cooking appliance includes a self capturing latch mechanism that secures and seals the side swing door in the closed position, the self capturing latch mechanism including a stationary hook and a receiver that receives and draws part of the stationary hook into a secured position within the receiver when the side swing door is moved into the closed position to secure the side swing door in the closed position. The receiver provides a variable closing force that varies from a first closing force at an initial engagement of the receiver with the part of the stationary hook to a predetermined second closing force, which is greater than the first closing force, at a completed engagement of the receiver with the part of the stationary hook to seal the side swing door in the closed position.

Claims

1. A home cooking appliance comprising:

a housing having a cooking cavity;

a side swing door movable between a closed position and an open position to provide access to the cooking cavity; and

a self capturing latch mechanism that secures and seals the side swing door in the closed position, the self capturing latch mechanism including;

a stationary hook; and

a receiver that receives and draws a part of the stationary hook into a secured position within the receiver when the side swing door is moved into the closed position to secure the side swing door in the closed position,

the stationary hook and the receiver being mounted on opposing surfaces of the housing and the side swing door that face each other when the side swing door is in the closed position, and

the receiver providing a variable closing force that varies from a first predetermined closing force at an initial engagement of the receiver with the part of the stationary hook to a second predetermined closing force, which is greater than the first predetermined closing force, at a completed engagement of the receiver with the part of the stationary hook to seal the side swing door in the closed position, and

the receiver receiving a variable opening force, in response to an application of a pulling force on the receiver by a user, that varies from a first predetermined opening force at an initial disengagement of the receiver from the part of the stationary hook to a second predetermined opening force, which is less than the first predetermined opening force, at a completed disengagement of the receiver from the part of the stationary hook when the side swing door is in the open position;

the receiver comprising;

a receiver body having an opening for receiving the part of the stationary hook;

a rocker arm having a first end and a second end, the first end being opposite the second end, the rocker arm being pivotably coupled at a location between the first end and the second end to a fixed point on the receiver body;

a hook roller carrier pivotably coupled to the first end of the rocker arm and moveable with the first end of the rocker arm;

a hook roller being mounted on the hook roller carrier and movable with the hook roller carrier, the hook roller configured to engage the part of the stationary hook to secure the side swing door in the closed position;

a spring/plunger mechanism having an upper end and a lower end, the upper end being pivotably coupled to the second end of the rocker arm and movable with the second end of the rocker arm, and the lower end being pivotably coupled to a fixed point on the receiver body;

a hook roller latch fixed to the receiver body, the hook roller latch being disposed adjacent to the opening in the receiver body;

wherein the hook roller is configured to engage a surface of the hook roller latch when the hook roller is disengaged from the part of the stationary hook.

2. The home cooking appliance of claim 1, wherein the receiver is mounted on the surface of the side swing door and the stationary hook is mounted on the opposing surface of the housing.

3. The home cooking appliance of claim 1,

wherein the actuated spring loaded latching mechanism draws the part of the stationary hook into the receiver with a force that increases from a first predetermined closing force, which is capable of drawing the part of the stationary hook into the receiver, to a predetermined second closing force, which is capable of maintaining the side swing door in the closed position in a sealed state.

4. The home cooking appliance of claim 3, wherein the second predetermined closing force is equal to or greater than 10 pounds.

5. The home cooking appliance of claim 4, wherein the first predetermined closing force is equal to or greater than 3 pounds and less than 10 pounds.

6. The home cooking appliance of claim 3, wherein the spring loaded latching mechanism is actuated to release the side swing door from the closed position in the sealed state by an application of a pulling force by a user, the pulling force being equal to or greater than the predetermined second closing force and decreasing to the first predetermined closing force during a release of the side swing door from the closed position in the sealed state.

7. The home cooking appliance of claim 1, wherein the receiver further comprises a first pin pivotably coupling the hook roller carrier to the first end of the rocker arm, and

wherein the hook roller latch includes a stop surface that engages the first pin and limits an amount of rotation of the rocker arm about the fixed point on the receiver body.

8. The home cooking appliance of claim 1, wherein the receiver further comprises:

a latch trip spring coupled to at least one of the hook roller carrier and the hook roller and movable with the hook roller carrier or the hook roller,

the latch trip spring configured to disengage the hook roller from the surface of the hook roller latch.

9. The home cooking appliance of claim 8, wherein the latch trip spring is configured to reset the hook roller onto the surface of the hook roller latch if the self capturing latch mechanism is tripped prior to the stationary hook being received by the receiver.

10. The home cooking appliance of claim 9, wherein the stationary hook comprises:

a hook end having a second sloped or curved cam surface that curves downward away from the hook end such that, when the side swing door is moved into the closed position, the second sloped or curved cam surface of the stationary hook engages and moves the hook roller into a reset position if the self capturing latch mechanism is tripped prior to the stationary hook being received by the receiver.

11. The home cooking appliance of claim 1, wherein the stationary hook comprises:

a hook mounting base for mounting the stationary hook;

the part of the stationary hook received by the receiver includes a hook end at an opposite end from the hook mounting base; and

a recess on a lower side for engaging the hook roller.

12. The home cooking appliance of claim 11, wherein the receiver further comprises a fixed roller coupled to the receiver body and disposed at the opening of the receiver body, and

wherein the stationary hook further comprises a sloped or curved cam surface on an upper side, the sloped or curved cam surface engaging a lower side of the fixed roller upon the initial engagement of the receiver with the part of the stationary hook and cooperating with the lower side of the fixed roller to lift the side swing door in an upward vertical direction as the part of the stationary hook is drawn into the receiver.

13. The home cooking appliance of claim 11, wherein the hook end comprises a second sloped or curved cam surface that curves downward away from the hook end and toward the recess,

wherein, when the side swing door is moved into the closed position, the second sloped or curved cam surface of the stationary hook engages and moves the hook roller into a reset position if the self capturing latch mechanism is tripped prior to the stationary hook being received by the receiver.

14. The home cooking appliance of claim 1, wherein the second predetermined closing force is equal to or greater than 10 pounds.

15. The home cooking appliance of claim 14, wherein the first predetermined closing force is equal to or greater than 3 pounds and less than 10 pounds.

16. The home cooking appliance of claim 1, wherein the receiver is configured to receive a variable releasing force, in response to the application of the pulling force on the side swing door by the user, that decreases from the predetermined second closing force, at the completed engagement of the receiver with the part of the stationary hook, to the first predetermined closing force prior to a release of the receiver from the part of the stationary hook.

17. The home cooking appliance of claim 1, wherein the rocker arm, the hook roller carrier, the hook roller, and the spring/plunger mechanism are disposed within a cavity of the receiver body.

18. The home cooking appliance of claim 1, wherein the receiver further comprises a first pin directly coupling the hook roller carrier to the first end of the rocker arm such that the hook roller carrier and the first end of the rocker arm are pivolable with respect to each other about the first pin.

19. The home cooking appliance of claim 18, wherein the receiver further comprises a latch trip spring coupled to the hook roller carrier, the latch trip spring being pivolable along with the hook roller carrier, about the first pin.

20. The home cooking appliance of claim 19, wherein the latch trip spring includes a resilient material that absorbs sounds resulting from contact between the stationary hook and the latch trip spring.

21. The home cooking appliance of claim 7, wherein the receiver further comprises a latch trip spring coupled to the hook roller carrier, the latch trip spring being pivolable along with the hook roller carrier, about the first pin, the latch trip spring configured to disengage the hook roller from the surface of the hook roller latch.

22. A home cooking appliance comprising:

a housing having a cooking cavity;

a side swing door movable between a closed position and an open position to provide access to the cooking cavity; and

self capturing latch means for securing and sealing the side swing door in the closed position, the self capturing latch means including a stationary hook and a receiver for pulling the side swing door toward the housing with a variable closing force,

wherein a first closing force applied to the side swing door during an initiation of a latching process, when the side swing door is moved from the open position to the closed position, is less than a second closing force applied to the side swing door at a completion of the latching process, and

wherein the second closing force is a predetermined closing force for sealing the side swing door to the housing,

the self capturing latch means receiving a variable opening force, in response to an application of a pulling force on the side swing door by a user, that varies from a first predetermined opening force at an initial disengagement of the side swing door from the closed position to a second predetermined opening force, which is less than the first predetermined opening force, when the side swing door is in the open position;

the receiver comprising;

a receiver body having an opening for receiving a part of the stationary hook;

a rocker arm having a first end and a second end, the first end being opposite the second end, the rocker arm being pivotably coupled at a location between the first end and the second end to a fixed point on the receiver body;

a hook roller carrier pivotably coupled to the first end of the rocker arm and moveable with the first end of the rocker arm;

a hook roller being mounted on the hook roller carrier and movable with the hook roller carrier, the hook roller configured to engage the part of the stationary hook to secure the side swing door in the closed position;

a spring/plunger mechanism having an upper end and a lower end, the upper end being pivotably coupled to the second end of the rocker arm and movable with the second end of the rocker arm, and the lower end being pivotably coupled to a fixed point on the receiver body;

a hook roller latch fixed to the receiver body, the hook roller latch being disposed adjacent to the opening in the receiver body,

wherein the hook roller is configured to engage a surface of the hook roller latch when the hook roller is disengaged from the part of the stationary hook.

23. The home cooking appliance of claim 22, further comprising:

means for self-correcting for a sagging condition of the side swing door by lifting the side swing door in an upward vertical direction during movement of the side swing door from the open position to the closed position.