Combined Hand Warmer With Elastic Locking for Stable Assembly
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Solution Overview
Problem
Traditional hand warmers are single units that occupy space and lack portability when multiple are carried, and existing combined designs suffer from structural instability and short service life due to loose clamping and exposed buckles.
Innovation Solution
A combined type hand warmer with a first and second heating unit connected by a connection portion featuring an insertion block and locking portion, utilizing an elastic sheet and locking piece to ensure stable assembly and disassembly, preventing damage from collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If clamping buckles are used to connect the first and second branch bodies, then the hand warmer can be assembled and disassembled, but the structural stability is poor and the service life is short due to easy loosening and collision damage
Solution Approach 1:
The connection mechanism is divided into two functional parts: the insertion block with insertion slot for initial positioning, and the elastic sheet with locking piece for secure locking. This segmentation allows each component to perform its specific function optimally while working together to provide both ease of assembly and structural stability.
Solution Approach 2:
The insertion block is designed to be inserted into the insertion slot first as a preliminary action, establishing initial connection and positioning before the locking piece engages with the lock hole. This preliminary action facilitates easy assembly while setting up the structure for subsequent secure locking.
Solution Approach 3:
The elastic sheet acts as an intermediary element between the insertion block/locking piece and the lock hole. It provides the necessary flexibility and locking force to secure the connection, mediating between the simple insertion mechanism and the requirement for stable locking, thereby preventing both easy loosening and collision damage.
2Adaptability or versatility
If multiple single-unit hand warmers are carried for warming, then each hand warmer can function independently, but they occupy large space and have poor portability
Solution Approach 1:
Two separate hand warmer units are merged into a single combined unit through the connection portion with insertion block and locking mechanism. This merging allows the hand warmer to warm both hands simultaneously while reducing the total volume from two separate units to one compact combined unit, thereby improving portability without sacrificing warming capability.
Solution Approach 2:
The combined hand warmer design provides multi-functionality by enabling both independent use of each unit and combined use of both units. The connection portion allows the device to adapt between different usage scenarios, making it universally applicable whether the user needs single-unit or dual-unit warming functionality.
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
Improves structural stability and extends service life by ensuring secure connection and preventing damage during use, enhancing portability and usability.
Implementation Method 1
the elastic sheet is provided with a locking piece; and the locking piece is located at the movement hole and can be separated from or clamped into the lock hole
Data Source
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AI summary
A combined type hand warmer is provided, including a first heating unit, a second heating unit, a connection portion, and a locking portion, wherein the connection portion includes an insertion block located on the first heating unit and a connection block located on the second heating unit; the connection block is provided with an insertion slot matched with the insertion block; the locking portion includes a movement hole located on an inner surface of the first heating unit, a lock hole located on an inner surface of the second heating unit, and an elastic sheet mounted in the first heating unit; and the elastic sheet is provided with a locking piece located in the movement hole and matched with the lock hole.