Hand Warmer Detachable Battery Cover Mechanism
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Solution Overview
Problem
Existing hand warmers with fixed lithium batteries cannot be easily replaced or charged in cold weather, limiting their long-term and all-weather use.
Innovation Solution
A hand warmer design with a detachable battery compartment and battery cover, featuring a clamping mechanism and silica gel for protection, allows for easy battery replacement and secure installation, preventing accidental opening during impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the lithium battery is fixedly installed in the shell, then the heating time is extended, but the battery cannot be replaced or charged externally
Solution Approach 1:
The battery compartment is separated from the main shell as an independent removable module. The battery is installed within this separate compartment, which can be detached from the shell. This segmentation allows the battery to remain fixed during normal use (maintaining heating duration) while enabling easy removal and replacement when needed.
Solution Approach 2:
The battery compartment is extracted as a separate functional unit from the shell. By providing a detachable battery compartment with opening structure, the battery system can be taken out for external charging or replacement without affecting the main body of the hand warmer, thus resolving the contradiction between fixed installation and replaceability.
2Ease of operation
If the battery cover is easily detachable, then battery replacement is convenient, but the battery may fall out during impact
Solution Approach 1:
The battery cover connection mechanism transitions between two states: easily detachable under normal conditions for convenient battery replacement, and securely locked under impact conditions to prevent battery fallout. The dynamic design allows the same structure to provide both ease of operation and reliability depending on the force applied.
Solution Approach 2:
The clamping mechanism and positioning structures (such as positioning grooves and protrusions) are designed to preemptively counteract the force of impact before it can cause the battery to fall out. The clamping blocks and limiting slots create preliminary resistance to detachment forces, ensuring the battery remains secure during accidental impacts while still allowing intentional removal.
3Reliability
If the battery compartment is sealed, then the battery is protected, but the battery cannot be accessed for replacement
Solution Approach 1:
The battery compartment is designed as a separate sealed module that can be detached as a whole unit. This segmentation allows the compartment to maintain its protective sealing function while enabling easy access to the battery by simply removing the entire compartment from the shell, rather than opening a sealed structure.
Solution Approach 2:
The battery compartment is extracted as a removable unit with its own opening structure. By taking out the battery compartment as a complete module, the design provides both protection (when installed) and accessibility (when removed), resolving the contradiction between sealed protection and battery accessibility for replacement.
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 convenient battery replacement and stable installation, ensuring continuous use in cold weather and preventing battery fallout, thus meeting long-term and all-weather usage requirements.
Implementation Method 1
the clamping block is provided with positioning beads. When installing, the clamping block is inserted into the clamping groove, and the battery cover is pushed laterally, and the positioning beads are clamped together
Implementation Method 2
the inner side wall of the bottom of the shell is provided with a clamping groove, and the top of the battery cover is fixedly provided with a clamping block matched with the clamping groove
Implementation Method 3
the outer side of the shell is also provided with silica gel
Implementation Method 4
the battery cover can be easily disassembled by adopting the limiting mode in two directions, so that the installation is more stable. However, when being impacted, the impact force is unidirectional, so it is not easy to open during impact, and the battery can be prevented from falling
Data Source
AI summary
The utility model discloses a hand warmer with detachable battery, which relates to the hand warmer field, and comprises a shell, wherein the outer side of the shell is provided with a hardware piece, the inner side of the shell is fixedly provided with a PCB motherboard, and the inner side of the shell is also provided with a detachable battery compartment; the bottom of the shell is provided with an opening structure, and a battery cover is clamped at the opening, and the battery cover can be detached from the opening; the outer side of the shell is also provided with silica gel, which is formed by splicing two plastic shells, and the silica gel is arranged outside the connecting seam of the shell. By arranging the battery cover, which can be directly detached from the shell, the utility model is convenient to replace the battery, and can be used for hand warmers all day. Moreover, the battery cover can be installed in two directions during installation by arranging the structure such as the limiting clamping groove and the positioning wave bead, and the battery cover can be easily disassembled by adopting the limiting mode in two directions, so that the installation is more stable.