Passive Door Upper Lock System With Pull Bar and Grabber Module
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Solution Overview
Problem
Existing upper and lower lock systems for passive door blades in double doors often hinder the ease of use of active doors due to resistance from control wedges and springs, and are difficult to install and service, especially when integrated with door automatics.
Innovation Solution
An upper lock system featuring a bolt installed in the passive door blade's upper surface, controlled by a pull bar with a power transmission mechanism and grabber module, which includes a spring to facilitate easy installation and service, allowing for smooth operation and integration with door automatics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a control wedge and spring system is used in the upper lock to secure the passive door, then the locking reliability is improved, but the ease of operation of the active door deteriorates due to resistance during closing and opening
Solution Approach 1:
The invention extracts the control wedge from the lock mechanism. Instead of using a control wedge that presses against the active door, the patent uses a pull bar system where the pull bar is directly pulled towards the inside of the passive door by a release means, eliminating the intermediate control wedge that causes resistance and operational difficulty.
Solution Approach 2:
The invention inverts the traditional locking approach. Rather than pushing a control wedge out to lock (which resists door movement), the system pulls the pull bar in to unlock. The resilient means pulls the pull bar towards the inside of the passive door to release the locking, reversing the direction of force application and eliminating resistance to active door operation.
2Stability of the object's composition
If the pull bar is permanently fastened to the locking bolt system, then the structural stability is improved, but the ease of repair and service deteriorates due to difficulty in removal and replacement
Solution Approach 1:
The invention makes the connection between the pull bar and locking bolt system dynamic rather than permanent. The grabber module can automatically grasp the pull bar when needed and release it when not needed, allowing the pull bar to be easily removed and replaced without permanent fastening, thus improving ease of repair while maintaining structural stability during operation.
Solution Approach 2:
The grabber module performs self-service by automatically grasping and releasing the pull bar based on the locking state. This eliminates the need for manual fastening and unfastening operations, allowing service personnel to easily remove and replace the pull bar by simply pulling it out when the grabber releases it, significantly improving ease of repair and service.
3Manufacturing precision
If precise cutting and fastening of the pull bar is required before installation, then the manufacturing precision is improved, but the ease of manufacture deteriorates due to increased installation difficulty
Solution Approach 1:
The invention segments the installation process into independent steps. The pull bar can be installed separately without requiring precise cutting and fastening before installation. The grabber module automatically establishes the connection between the pull bar and locking mechanism after installation, eliminating the need for pre-cutting and pre-fastening operations, thus improving ease of manufacture while maintaining sufficient precision through the automatic grabbing mechanism.
4Extent of automation
If the lock system is integrated with door automatics, then the automation level is improved, but the reliability deteriorates due to resistance from the control wedge pressing the active door
Solution Approach 1:
The invention extracts the control wedge from the system to eliminate the source of resistance that interferes with door automatics. The pull bar system directly connects to the release means without an intermediate control wedge, allowing door automatics to operate smoothly without encountering resistance, thus improving both automation integration and operational reliability.
Solution Approach 2:
The invention inverts the force application direction. Instead of pushing outward with a control wedge that resists door movement, the system pulls inward with the resilient means acting on the pull bar. This inverted mechanism eliminates resistance to door automatics, enabling reliable integration with automated door opening and closing systems.
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 system minimizes interference with active door operation, is easy to install and service, and can be integrated with door automatics, enhancing usability and maintenance efficiency.
Implementation Method 1
A spring 26 is arranged to push the grabber module towards the extended position
Implementation Method 2
A resilient means 26 is arranged to push the grabber module towards the extended position
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The upper lock system of the passive door blade of a double door according to the invention comprises a bolt (19) arranged to be installed to the upper surface of the passive door blade and arranged to be controlled by means of a pull bar (9). The bolt is a part of the lock (18). The lock also has a power transmission connection part (23) for the interface part (17) of the upper lock system. The interface part comprises a grabber module (24), power transmission module (32, 34) and a spring (26). The grabber module (24) is arranged to linearly move between the extended position and the retracted position. A spring (26) is arranged to push the grabber module towards the extended position. The power transmission mechanism (32, 34) is operationally connected with the grabber module (24) and the power transmission connection part (23).