Automotive Lifting Jack Screw Rod Mechanism
Solution Overview
Problem
Conventional lifting jacks for automotive require significant time and effort to lift vehicles due to the need for extensive rotation of the screw rod, making the process inefficient.
Innovation Solution
A lifting jack design featuring a connection shaft and key that are slidably inserted into both sides of a screw rod, allowing for vertical rotation and engagement with screw grooves and shaft protrusions to reduce effort and time required for lifting, with the key and connection shaft being rotated using wrenches for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the screw rod is rotated extensively to ascend and descend the connection frame, then the lifting function is achieved, but the time and effort required increase significantly
Solution Approach 1:
The screw rod is segmented into multiple sections with screw grooves at different positions along its length. The connection shaft can engage with different segments by rotating to different angles, allowing the lifting distance to be adjusted without requiring extensive rotation of the entire screw rod mechanism.
Solution Approach 2:
The connection shaft is designed to be rotatable relative to the screw rod, enabling dynamic adjustment of the engagement position. This dynamic mechanism allows the operator to quickly select different lifting heights by rotating the connection shaft to engage with appropriate screw grooves, rather than requiring fixed-step rotation of the screw rod itself.
2Productivity
If the connection shaft and key system is used to engage with the screw rod, then the lifting speed increases, but the device complexity increases
Solution Approach 1:
The connection shaft serves multiple functions: it acts as both a rotational element for engaging different screw grooves and as a structural connector between the screw rod and the lifting mechanism. The key component similarly serves dual purposes of engagement and positioning, reducing the need for separate dedicated components for each function.
Solution Approach 2:
The key is inserted through the fix bracket into the screw rod, creating a nested arrangement where the key is contained within the screw rod structure. The connection shaft is also inserted into the screw rod, forming a compact nested configuration that reduces overall structural complexity while maintaining multiple engagement points.
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 design enables the automotive to be lifted with less effort and time, as the connection shaft and key system allows for efficient engagement and disengagement with the screw rod, reducing the mechanical strain and time needed for lifting.
Implementation Method 1
screw grooves and shaft protrusions are engaged with each other... The connection shaft may rotate in a direction which is vertical to lengthwise direction of the connection shaft so that the screw grooves and the shaft protrusions are engaged with each other
Implementation Method 2
a pair of lower arms of which one end portion is hingedly engaged with both sides of the base; a pair of upper arms of which one end portion is hingedly engaged with both sides of the stand
Data Source
AI summary
A lifting jack for automotive may include a base; a pair of lower arms of which one end portion is hingedly engaged with both sides of the base; a stand having a stand groove; a pair of upper arms of which one end portion is hingedly engaged with both sides of the stand and the other end portion is hinge is hingedly engaged with the other end portion of the pair of lower arms; a fix bracket hingedly engaged with the other end portion of the lower arm and the other end portion of the upper arm; a hollow screw rod penetrating and being inserted into the fix bracket and screw threads are provided on an external circumference; a connection shaft inserted into an internal circumference of the screw rod; and a key inserted into the screw rod through the fix bracket.