Dual-Locking Door Bar Head with Automatic Child-Resistant Reset
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Solution Overview
Problem
Conventional protective door bars with single locking mechanisms are vulnerable to being unlocked by older children who have learned to operate them, lacking sufficient safety for preventing accidental door opening.
Innovation Solution
A dual automatic locking mechanism is introduced, comprising a first toggling button and a second toggling button with a hydraulic rod for automatic resetting, along with a linkage locking mechanism and rotating mechanism, ensuring that the door bar remains locked unless both mechanisms are unlocked in a specific sequence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single locking mechanism with a manually toggled button is used, then the structure is simple and ease of operation is good, but the reliability of prevention against determined children is insufficient
Solution Approach 1:
The locking mechanism is divided into two independent subsystems: a first locking mechanism with a first toggling button and a second locking mechanism with a second toggling button. Each subsystem operates independently but must both be unlocked to open the door bar, thereby segmenting the security function to achieve higher reliability without excessive complexity in any single subsystem.
Solution Approach 2:
The second locking mechanism is nested within the overall locking system as an additional layer of security. The patent describes a structure where the second toggling button and its associated components (locking block, limiting block, spring) are integrated into the housing and work in conjunction with the first locking mechanism, creating a nested security architecture where one mechanism is contained within the broader system.
2Extent of automation
If a hydraulic rod automatic locking mechanism is added, then the automatic locking function is achieved, but the device complexity increases
Solution Approach 1:
The hydraulic rod automatic locking function is merged with the first locking mechanism. The hydraulic rod is integrated into the fixation seat and works together with the first toggling button and linkage locking mechanism to achieve automatic locking after a predetermined time, combining multiple functions into a unified subsystem rather than adding separate independent mechanisms.
Solution Approach 2:
The hydraulic rod provides automatic resetting of the first toggling button without requiring external intervention. After the door bar is opened and then closed, the hydraulic rod automatically returns the first toggling button to its locked position after a predetermined time interval, enabling the system to service itself and restore security automatically.
3Reliability
If dual locking mechanisms are implemented, then the protection effect is enhanced, but the ease of operation deteriorates
Solution Approach 1:
The two toggling buttons are positioned at different locations on the door bar structure - the first toggling button is mounted on the sliding seat and exposed outside the housing, while the second toggling button is exposed on the housing and connected to a toggling button seat. This spatial distribution allows users to access both buttons easily from different positions, maintaining ease of operation despite the dual mechanism requirement.
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
The dual locking mechanism significantly enhances security by making it difficult for children to unlock the door bar, even after learning the operation, thereby improving safety and protection against accidental door opening.
Implementation Method 1
a hydraulic rod capable of retracting regularly is mounted inside the fixation seat, and the hydraulic rod is connected to the sliding seat to realize automatic resetting of the first toggling button
Implementation Method 2
The toggling button seat is mounted inside the housing through a first spring, thereby forming an automatic resetting structure
Data Source
AI summary
Provided is a locking head apparatus of a dual automatic locking protective door bar. The locking head apparatus includes a housing, a first toggling button, a second toggling button, a sliding seat, a fixation seat, a linkage locking mechanism and a rotating mechanism. A hydraulic rod is mounted inside the fixation seat, and the hydraulic rod is connected to the sliding seat. The second toggling button is exposed on the housing and connected with a toggling button seat. The toggling button seat is mounted inside the housing through a first spring, thereby forming an automatic resetting mechanism. With the adoption of the locking head apparatus, the dual automatic locking may be realized, the dual protection is achieved, and a child is prevented from opening the door bar after learning the unlocking skill.