Latch Electric Control Device Bracket Force Distribution
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Solution Overview
Problem
Existing electric control devices for latches are prone to deformation and damage due to torque and shear forces when attempting to open doors forcibly, especially when the locking cap is locked, leading to potential damage to the locking members and shafts.
Innovation Solution
The electric control device features a mounting seat with compartments and a bracket that securely abuts the inner face of the second compartment, with locking members positioned to avoid deformation by aligning with protrusions, and a status sensor system to manage locking and unlocking states, reducing the likelihood of damage through strategic positioning and force distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the locking cap device is engaged with the locking member to prevent door opening, then the locking reliability is improved, but the locking member becomes susceptible to deformation when the door is forcibly pushed
Solution Approach 1:
The bracket serves as an intermediary component between the locking member and the mounting seat. When the door is forcibly pushed, the bracket absorbs and distributes the impact force, preventing direct transmission to the locking member. The bracket includes a stop portion that contacts the locking member only when necessary for positioning, not during forceful pushing events.
Solution Approach 2:
The bracket is positioned and configured in advance to provide protective cushioning for the locking member. The stop portion of the bracket is strategically located to prevent excessive movement of the locking member while allowing normal locking operations. This pre-positioned protective structure absorbs potential damage before it reaches the locking member.
2Ease of operation
If the shaft of the driving device is connected to the locking member to actuate it, then the locking function is achieved, but the shaft becomes vulnerable to deformation or damage due to shear force during forced opening attempts
Solution Approach 1:
The bracket acts as a protective intermediary between external forces and the shaft of the driving device. During normal operation, the shaft connects directly to the locking member for actuation. During forced opening attempts, the bracket's stop portion engages first, absorbing the shear force and preventing it from reaching the shaft, thus protecting the shaft from deformation or damage.
3Reliability
If the locking member is positioned to engage with the locking cap device, then the door can be securely locked, but the locking member is liable to deform when torque is applied during forced opening
Solution Approach 1:
The bracket serves as a protective intermediary that intercepts torque forces before they reach the locking member. The stop portion of the bracket is positioned to contact the locking member in a way that provides stability during normal locking while preventing excessive torque transmission during forced opening attempts, thus maintaining both door security and locking member stability.
Data Source
AI summary
An electric control device for a latch includes a mounting seat having including a first compartment and a second compartment. An electric locking device includes a bracket securely mounted in the second compartment and a driving member securely mounted to the bracket. The driving member for actuating the locking member is coupled with a locking member. The locking member includes a stop portion having a protrusive end abutting a first face of the bracket without interfering with movement of the locking member. A locking cap device is pivotably connected to the mounting seat and is received in the first compartment. The locking cap device includes an inner side having a first protrusion corresponding to the stop portion. When the stop portion is located on a rotational path of the first protrusion, the locking cap device is not pivotable from a closure position to a non-closure position.