Deadbolt Lock Cover with Anchor Plate Hooks
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Solution Overview
Problem
Deadbolt locks that allow easy interior access for emergency use also pose a security risk as intruders can manipulate the lever through a broken window to open the door, while making the lock key-operable on both sides complicates usage.
Innovation Solution
A cover is designed to secure over the interior portion of a deadbolt lock, using an anchor plate with hooks that only disengage when the door is open, ensuring the lock can only be unlocked with a key from the outside.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a deadbolt lock has an easily operable lever on the inside for emergency escape, then ease of operation is improved, but security is worsened because intruders can reach through broken windows to manipulate the lever
Solution Approach 1:
A cover is introduced as an intermediary component between the intruder and the deadbolt lever. The cover blocks direct access to the lever while including a keyhole that allows authorized operation. This mediator protects the lever from unauthorized manipulation through broken windows while preserving legitimate access through the keyhole.
Solution Approach 2:
The cover provides selective access by creating a localized opening (keyhole) in an otherwise blocking structure. The keyhole is positioned and sized to allow key insertion and lever operation from the interior, while preventing hand insertion from the exterior. This local quality difference enables differentiated access based on the tool used.
2Object-affected harmful factors
If a deadbolt lock requires a key on both inside and outside, then security is improved, but ease of operation is worsened because the lock becomes more difficult to use
Solution Approach 1:
The cover creates a localized access point (keyhole) that maintains the interior lever's simplicity while adding security. The keyhole allows key-operated access from the exterior without requiring the interior mechanism to be key-operated, thus preserving ease of interior operation while improving security.
3Object-affected harmful factors
If a cover is placed over the interior portion of the deadbolt lock to prevent access, then security is improved, but ease of operation is worsened if the cover cannot be easily removed
Solution Approach 1:
The cover is pre-configured with a keyhole that aligns with the lever's operational path. This preliminary design allows the cover to remain in place for security while automatically permitting operation when the correct key is inserted and turned, without requiring removal or complex manipulation of the cover itself.
Data Source
AI summary
A deadbolt lock cover is removably attachable to an anchor plate. While a door is opened, the deadbolt lock cover may be removably engaged with the anchor plate by means of bolts and hooks. When the cover has been engaged with the anchor plate and the door is closed, the interior portion of the deadbolt lock, having the manually operable knob, is inaccessible, being completely covered by the deadbolt lock cover. Thus, the deadbolt lock may only be unlocked by using a key on the outside tumbler of the lock. The cover may include a frame for supporting the bolts and may be of a variety of different geometries.