Spring-Loaded Latch Assembly for Portable Device Battery Cover
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional portable electronic devices, such as handheld wireless communication devices, face challenges in accessing the battery compartment due to the physical difficulty in sliding the cover off and on the housing, as the cover must be securely tightened.
Innovation Solution
The implementation of spring-loaded latch assemblies along the edges of the cover, which can be manually operated to disengage from the housing, allowing the cover to be pivoted outward and removed, exposing the battery compartment, with features like guide pins, compression springs, and manual actuators for easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cover is slid along a recessed opening with hook-shaped tabs engaging apertures in the housing, then the cover is securely held in place, but users find it physically challenging to slide the cover off and on the housing
Solution Approach 1:
The latch assembly transitions from a static sliding mechanism to a dynamic spring-loaded system. The compression spring provides elastic force that automatically returns the latch to its engaged position, enabling easy one-handed operation while maintaining secure closure. The latch can be manually actuated to disengage and automatically re-engages when the cover is closed.
Solution Approach 2:
The spring-loaded latch assembly performs the function of securing the cover automatically without requiring user intervention to maintain the locked state. The compression spring continuously exerts force to keep the latch engaged with the housing aperture, and the latch self-retracts when force is applied to the actuator, eliminating the need for complex manual manipulation.
2Reliability
If the cover must be secured tightly to the housing, then battery compartment access is reliable, but physical strain on users increases
Solution Approach 1:
The system replaces static friction-based securing with a dynamic spring-loaded mechanical advantage system. The compression spring stores and releases elastic energy to maintain secure engagement with minimal user force. When the user applies force to the actuator, the spring releases stored energy to quickly disengage the latch, reducing the continuous force required from the user.
Solution Approach 2:
The spring-loaded latch assembly acts as an intermediary between the user's manual input and the secure closure requirement. The compression spring mediates the force transmission, amplifying the user's small input force into sufficient engagement force while automatically maintaining the secure state without continuous user effort.
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
Enables easy and secure access to the battery compartment, reducing physical strain on users while maintaining a secure closure, and allowing for efficient battery replacement.
Implementation Method 1
spring-loaded latch assemblies that are slideably located along opposite edges of the cover
Implementation Method 2
compression springs, and manual actuators for easy operation
Data Source
AI summary
An apparatus for securing a cover over an opening defined in a housing of a portable electronic device includes a pair of latches along opposite edges of the cover. Each latch assembly has a cap affixed to the cover and partially housing a latch that is slideable therein. Each latch is biased by a separate spring into a first position, at which a tab on that latch projects from the cap and engages the housing. An actuator on each latch extends outside the respective cap for engagement by a user to slide the latch into a second position in which the associated tab is retracted from engaging the housing.