Exit Device Door Lock with Embedded Damper and Brake
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Solution Overview
Problem
Existing exit devices have a coarse appearance due to exposed parts, can produce noise during operation, and are vulnerable to unauthorized opening of the deadbolt, which can lead to security issues.
Innovation Solution
The exit device embeds all parts except the pushing part inside the door, incorporating a damper to control the operation and release of the door lock, and a brake piece to restrict deadbolt movement without push bar operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If all parts are embedded inside the door, then the appearance is simplified and interior décor effect is enhanced, but the structure becomes more complex and manufacturing difficulty increases
Solution Approach 1:
The patent embeds the door lock mechanism, push bar mechanism, and all operational components within the door body itself, creating a nested configuration where internal mechanisms are contained within the door structure. This nesting approach achieves a clean external appearance while housing complex internal functionality.
Solution Approach 2:
The patent combines multiple functions (door locking, emergency exit operation, anti-pinch protection) into a single integrated mechanism embedded within the door. The merging of these functions into one unified structure simplifies the external appearance while maintaining comprehensive functionality.
2Ease of operation
If the push bar is constantly exposed on the front surface, then the operation is simple and direct, but the door appearance becomes coarse and unsophisticated
Solution Approach 1:
The patent extracts the push bar mechanism from the traditional exposed position on the door surface and relocates it to an embedded configuration within the door body. Only the essential pushing interface remains visible, while the complex mechanical components are extracted and hidden inside the door structure.
3Ease of operation
If the deadbolt can be freely moved without push bar operation, then the door operation is flexible and quick, but unauthorized opening and security issues occur
Solution Approach 1:
The patent incorporates a brake piece that preliminarily prevents unauthorized deadbolt movement by applying a restraining force. This preliminary anti-action counteracts any attempted manipulation of the deadbolt without push bar operation, while still allowing legitimate push bar-activated operation to overcome the brake and function normally.
Solution Approach 2:
The brake piece acts as an intermediary mechanism between the deadbolt and external manipulation forces. It mediates by allowing controlled movement during legitimate operation while blocking unauthorized movement, thus protecting the security system without interfering with normal function.
4Speed
If the door lock operates quickly, then the emergency escape is swift, but vibration and impulsive noise occur
Solution Approach 1:
The patent incorporates a damper mechanism that provides beforehand cushioning during the door lock operation. The damper is pre-positioned to absorb and mitigate impulsive forces generated during quick operation, reducing noise and vibration before they can propagate externally.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design simplifies the door's appearance, reduces noise and vibration, enhances security by preventing unauthorized door opening, and allows for smooth operation of the deadbolt.
Implementation Method 1
a damper part (200) inserted into the device frame (100) and provided to absorb and mitigate impulsive force generated according to the operation of pushing parts (300)
Implementation Method 2
a tilted arm (330) having one end rotatably connected to a mid-portion of the pushing arm (320) by a second hinge shaft (331) and having the other end connected to a third hinge shaft (332), which is provided to be fastened to one side of a spring (340)
Data Source
AI summary
The present invention relates to an exit device door lock and an exit device comprising same. To this end, the exit device of the present invention comprises: a device frame inserted into a door panel; a damper part inserted into the device frame and provided to absorb and damp impact power generated according to the operation of pushing parts; the pushing parts provided at both sides of the damper part to be pressable by a user; a slider provided to slidingly reciprocate along the device frame by the pushing part at the other side; and a slide bar coupled at one side thereof to the slider and provided such that the other side thereof is coupled to a door lock deadbolt by which a door is locked/unlocked.