Recessed Handle Door Locking Mechanism with Deadbolt Receptacle
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Solution Overview
Problem
Existing door closer mechanisms with key-actuated locks are complex and costly to manufacture, and their adjustment into an opening position can be difficult without additional means.
Innovation Solution
A door closer mechanism featuring a recessed handle that controls a slide and lever system to secure and release the deadbolt, allowing the door to be opened without additional keys, with the handle integrated to adapt to four different positions for ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a key-actuated lock is integrated into the door closer mechanism, then the closing position is securely locked, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent extracts the key-actuated lock from the door closer mechanism, separating the closing locking function (handled by the deadbolt in receptacle) from the opening release function (handled by the recessed handle). This eliminates the need for a key lock while maintaining secure closing position locking.
Solution Approach 2:
The recessed handle enables the door to be opened from the inside without requiring a key or additional external means. The mechanism serves itself by providing an internal release capability that simplifies the overall system while maintaining security.
2Reliability
If a key-actuated lock is integrated into the door closer mechanism, then the closing position is securely locked, but the manufacturing cost increases
Solution Approach 1:
By removing the key-actuated lock component entirely and relying on the deadbolt-receptacle mechanism combined with the recessed handle, the patent reduces the number of parts that need to be manufactured and assembled, thereby lowering production costs while maintaining the essential locking function.
3Device complexity
If the door closer mechanism uses a simple deadbolt and receptacle system, then the structure is simplified, but the door cannot be easily opened from the inside
Solution Approach 1:
The recessed handle acts as an intermediary mechanism that, when actuated, triggers the slide and lever system to move the deadbolt out of the receptacle. This simple addition provides the necessary functionality to open the door from the inside without complicating the overall structure.
Solution Approach 2:
The patent introduces a dynamic element (the recessed handle that can be moved out of the frame) that activates the release mechanism. This dynamic component enables the transition from a static locked position to an open position, making the simple structure operational and user-friendly.
4Device complexity
If the recessed handle is integrated flush into the frame, then the structure is compact, but the handle is difficult to grasp and actuate
Solution Approach 1:
The patent applies different qualities to different parts of the handle system: the main body is integrated flush into the frame for compactness, while the handle portion extends beyond the frame to provide a grasping surface. This local differentiation optimizes both compactness and ease of operation.
Data Source
AI summary
The invention relates to a door closer mechanism having a receptacle, countersunk in the door frame, for the deadbolt of a device, countersunk in the door, for controlling the deadbolt from the closing position to the opening position by means of a manually controllable actuation member. So that, without an additional key-actuated lock, the closing position can be locked in the closing position and fixed without making the ease of adjustment into the opening position more difficult, the invention provides that the actuation member of the device countersunk in the door is embodied as a handle recess, which in the closing position controls a slide via a rotatably supported angled control piece, and the slide, via a rotatably supported lever, secures the deadbolt in the receptacle in the door frame, and upon actuation of the recessed handle in the door, via the angled control piece and the slide, the deadbolt can be adjusted into the opening position of the door, and the door is enabled to open.