Lockable Pet Door With Independent Flap Control
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Solution Overview
Problem
Existing pet doors lack independent control over ingress and egress, are vulnerable to being forced open by pets, and often fail to provide effective weather sealing.
Innovation Solution
A lockable pet door design featuring a barrier flap surrounded by locking flaps that can be independently controlled to allow or block passage in specific directions, with locking flaps that prevent the barrier flap from pivoting when locked, enhancing security and weather resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single barrier flap is used for pet access, then the device is simple to operate, but it cannot independently control ingress and egress directions
Solution Approach 1:
The single barrier flap is divided into multiple independent locking flaps (first locking flap and second locking flap) that can be controlled separately. Each locking flap can be independently locked or unlocked to control access from different sides, enabling independent ingress and egress control while maintaining operational simplicity through electronic control mechanisms.
Solution Approach 2:
The locking flaps are designed to be dynamically controllable through electronic control circuits that can selectively lock or unlock each flap independently. This dynamic control allows the system to adapt to different access requirements (ingress only, egress only, both, or neither) without requiring physical reconfiguration of the structure.
2Strength
If the lock strength is increased to prevent pets from forcing their way through, then security is improved, but the device becomes more complex and harder to operate
Solution Approach 1:
The manual locking mechanism is replaced with an electronic control system that uses electronic control circuits to actuate the locking flaps. This substitution provides stronger and more reliable locking action that is difficult for pets to overcome, while maintaining ease of operation through simple electronic control interfaces that can be activated by authorized pets wearing identification devices.
3Reliability
If the barrier flap is made rigid to improve weather sealing, then weather resistance is improved, but the flap becomes harder to pivot and operate
Solution Approach 1:
The barrier flap and locking flaps are designed with optimized material properties and structural parameters that provide sufficient rigidity for effective weather sealing while maintaining adequate flexibility for easy pivoting. The electronic locking mechanism provides the necessary holding force to maintain the sealed position without requiring excessive flap rigidity, allowing the flaps to be made of materials that balance both sealing effectiveness and operational ease.
Data Source
AI summary
A pet door with locking flaps, or lockable pet door. The lockable pet door includes a barrier flap surrounded by one or more locking flaps mounted in the pet door frame. The locking flaps, the barrier flap, and the pet door frame cooperate to provide selective direction control allowing ingress, egress, both, or neither. Each locking flap is independently and selectively attached to the frame of the pet door to prevent movement of the locking flap. Each locking flap defines a through opening. In use, the animal passes through the locking flap on the entry side of the pet door and the locking flap on the exit side moves with the barrier flap. When locked, each locking flap prevents the barrier flap from pivoting to that side of the pet door blocking passage in that direction.