Oven Door Locking Assembly With Integrated Handle and Contact Pin
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Solution Overview
Problem
Existing cooking oven door designs require additional locking mechanisms that increase the number of parts and assembly operations, leading to higher costs and potential inaccuracies in positioning, which can result in malfunctions during locking.
Innovation Solution
A cooking oven door design that integrates a single element for both assembly and locking, using a crosspiece fixed with a locking means to the door frame, which simplifies assembly, minimizes parts, and ensures precise positioning, while also serving as a door handle and temperature detection mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional locking mechanisms are used to secure the oven door, then the reliability of door locking is improved, but the device complexity and number of parts increase
Solution Approach 1:
The patent combines the locking function with the existing door handle by integrating a locking element into the handle structure. The locking element works together with a locking means on the door frame to provide secure locking without requiring separate locking mechanisms, thereby maintaining reliability while reducing overall assembly complexity
Solution Approach 2:
The door handle is designed to serve multiple functions: it acts as both a handle for opening/closing the door and as a locking mechanism through the integrated locking element. This multi-functionality eliminates the need for separate locking devices, reducing the number of parts while ensuring reliable door securing during cooking operations
2Reliability
If additional locking means are added to the door structure, then the door locking reliability is improved, but the manufacturing cost increases
Solution Approach 1:
The locking function is merged into the existing door handle structure, eliminating the need for separate locking mechanisms. This integration reduces the total number of parts that need to be manufactured and assembled, thereby lowering manufacturing costs while maintaining reliable door locking
Solution Approach 2:
The door handle serves dual purposes as both a operational handle and a locking mechanism. By making the handle multi-functional, the patent avoids the need for additional specialized locking components, reducing material costs, manufacturing complexity, and assembly operations
3Reliability
If separate locking means are used instead of integrated locking, then the door locking function is improved, but the positioning precision deteriorates
Solution Approach 1:
The locking element is integrated into the door handle structure, creating a unified assembly where the locking element and handle move together as one unit. This integration eliminates positioning errors that would arise from separate components, ensuring precise alignment between the locking element and the locking means on the door frame
Data Source
Figure 1
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Figure 2
AI summary
The door (4) has an internal panel (25) and an external panel mounted on a door frame (23). The external panel is assembled with a cross piece (46), and the internal panel is fixed to the frame by an elastic detent fixation unit. The cross piece is positioned in support with a lateral wall (38) of the frame and fixed with the frame by a locking pin (45) of a door locking unit. The locking pin detects contact of the door with a frontal face of the kiln to turn on/off a lamp placed inside the door. The locking pin fixes the frame and the cross piece and blocks the door in a close position.