Load Cell Lock Assembly for Vibration Protection During Transport
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Solution Overview
Problem
Load cells in service carts, such as air conditioning service units, are prone to damage during transportation due to vibrations, leading to loss of integrity and measurement accuracy.
Innovation Solution
A lock assembly comprising a lock component, a lock member, and a bracket that secures the load cell, providing a three-point locking mechanism to physically and electrically protect the load cell by disengaging power when in the locked state, ensuring the load cell is secured and protected during transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the load cell is left unsecured during transport, then the service cart is easy to operate and access, but the load cell is susceptible to damage from vibrations and movement
Solution Approach 1:
The locking mechanism is divided into separate functional components: a lock component with locking surfaces, a lock member with corresponding engagement surfaces, and a bracket with support structures. This segmentation allows each component to be optimized for its specific function while collectively providing comprehensive protection for the load cell during transport.
Solution Approach 2:
The locking mechanism provides localized protection at critical areas of the load cell through strategically positioned locking surfaces and engagement points. The three-point locking system targets specific vulnerable areas of the load cell, providing enhanced protection where needed while maintaining overall system simplicity.
2Reliability
If the load cell is secured with a locking mechanism, then the load cell is protected from vibration damage, but the mechanism for securing and unsecuring adds operational steps
Solution Approach 1:
The locking mechanism is designed to be self-latching once engaged, eliminating the need for continuous manual intervention to maintain the locked state. The interlocking geometry of the lock component and lock member automatically maintains the secured position, reducing operational complexity while ensuring reliable protection during transport.
3Reliability
If the load cell is physically secured, then the load cell is protected from movement damage, but the electrical connections may remain vulnerable without power disconnection
Solution Approach 1:
The locking mechanism integrates both mechanical protection and electrical protection functions into a single unified system. The actuator simultaneously performs the mechanical action of engaging the lock member with the lock component and the electrical action of opening the electrical switch, providing dual protection without requiring separate systems.
Solution Approach 2:
The lock member serves multiple functions: it provides the primary mechanical locking action through engagement with the lock component, and it simultaneously actuates the electrical switch to disconnect power. This multi-functionality reduces the overall system complexity by eliminating the need for separate mechanical and electrical protection mechanisms.
Data Source
AI summary
A lock assembly includes at least a lock component, a lock member, and a bracket. The lock component is securable to a load cell. The lock member is configured to move into a first position to provide an unlocked state in which the lock member is disengaged from the lock component. In the unlocked state, the load cell is physically unsecured from the lock member and enabled to operate. The lock member is configured to move into a second position to provide a locked state in which the lock member is engaged with the lock component. In the locked state, the load cell is physically secured to the lock member via the lock component. The bracket is configured to support the lock member in relation to the lock component.