Circumferential Locking Mechanism for Battery Packs
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Solution Overview
Problem
Existing circumferential anti-loosening and locking techniques, such as tooth-groove connections and threaded connections, fail to provide continuous locking and positioning, leading to inconsistent engagement and susceptibility to loosening due to uncertain threading torque.
Innovation Solution
A circumferential locking mechanism featuring pins and a limiting face with a tapering radius in both axial and circumferential directions, allowing pins to engage with the limiting face at any position for continuous locking, utilizing a spiral spring to impel engagement and maintain constant threading torque.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If threaded connections with multi-tooth anti-loosening structures or groove-shaped anti-loosening structures are used, then anti-loosening capability is improved, but the locking and positioning is only limited and graduated, not continuous
Solution Approach 1:
The limiting face is designed with a tapered surface that curves continuously in both axial and circumferential directions, replacing traditional flat or grooved surfaces. This curved tapered surface allows the pin to make continuous contact at any angular position, achieving continuous locking and positioning rather than discrete graduated positions.
Solution Approach 2:
The radius of the limiting face changes continuously along both axial and circumferential directions through the tapered design. This parameter variation creates a continuous gradient that enables the pin to engage at any position, transforming the discrete locking mechanism into a continuous one.
2Reliability
If pins and grooves are used for circumferential graduated locking and positioning, then locking positions are provided, but engagement positions are inconsistent and constant threading torque cannot be kept
Solution Approach 1:
The tapered limiting face creates a continuous curved surface that eliminates discrete groove positions. The pin contacts this continuous surface at any angular position, ensuring consistent engagement regardless of rotational alignment, thereby solving the engagement position inconsistency problem.
3Reliability
If as many graduated locking and positioning parts as possible are arranged, then continuous locking and positioning can be achieved theoretically, but true continuous locking cannot be achieved
Solution Approach 1:
The invention extracts the concept of discrete graduated positions and replaces it with a continuous tapered surface. Instead of adding more individual locking parts, it removes the need for discrete positions by using a continuous geometric form that provides infinite engagement points.
Solution Approach 2:
The continuous curved tapered surface of the limiting face provides infinite contact points along its length, replacing the need for multiple discrete locking parts. This geometric approach achieves true continuous locking with a single integrated component rather than numerous separate elements.
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
The mechanism achieves reliable and continuous locking and positioning, ensuring constant threading torque and preventing loosening by allowing pins to engage with the limiting face at any circumferential position, providing a simple and effective solution for battery securing devices in vehicles.
Implementation Method 1
a third component for impelling the first component to engage with the second component
Data Source
AI summary
A circumferential locking mechanism, a battery securing device comprising same, a battery pack, and a vehicle are provided. The circumferential locking mechanism (100) comprises: a first component (110), the first component (110) comprising a first body (111) and pins (112) extending from the first body (111) in an axial direction, the pins (112) being distributed on the first body (111) along a first circumference; a second component (120), the second component (120) comprising a second body (121) and a limiting face (122) on the second body (121), the limiting face (122) extending in a circumferential direction and comprising segments, the radius of the limiting face (122) tapering in both the axial and circumferential directions at the segments; and a third component for impelling the first component (110) to engage with the second component (120), wherein the first component (110) and the second component (120) are arranged such that the first circumference and the limiting face (122) are coaxial, and when the first component (110) is engaged with the second component (120), the pins (112) abut against the limiting face (122). The pins (112) can be fitted to the limiting face (122) by means of the foregoing structure to complete continuous locking.