Wheel Lifting Device Friction Lock Mechanism
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Solution Overview
Problem
Existing wheel lifting devices for vehicles are cumbersome, require multiple operations, and involve complex components, making them difficult to use and store, especially for larger vehicles with heavy wheels.
Innovation Solution
A wheel lifting device with a base structure, a lifting frame, and a link mechanism operated by a pivotal lever, featuring a blocking device with a weight that automatically locks the frame in place using frictional engagement, allowing single-handed operation and stepless height adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a jack screw or hydraulic jack is used to lift the wheel, then the lifting force is sufficient, but the device becomes complicated and requires multiple components
Solution Approach 1:
The patent replaces complex hydraulic or screw-based lifting mechanisms with a simple link mechanism connected to a manual lever. This mechanical substitution maintains sufficient lifting capability while dramatically reducing device complexity, component count, and maintenance requirements.
Solution Approach 2:
The link mechanism is designed to dynamically adapt to different wheel positions and weights. As the wheel is lifted, the linkage automatically adjusts its geometry to maintain mechanical advantage, providing sufficient lifting force without requiring complex control systems or multiple components.
2Reliability
If a blocking device with cable and brake handle is used, then the lifting position can be locked, but simultaneous operation of lever and brake handle is required
Solution Approach 1:
The blocking device automatically engages and disengages based on the lever position alone. When the lever is raised to the desired position, the blocking mechanism self-activates to lock the position. When the lever is lowered, the block releases automatically. This eliminates the need for separate brake handle operation, making the system both reliable and easy to use.
Solution Approach 2:
The blocking function is merged with the lifting lever operation itself. The same lever that controls lifting also controls the blocking mechanism through mechanical linkage. This integration ensures that position locking and lever operation are coordinated automatically, eliminating the need for simultaneous independent operation of multiple controls.
3Force
If a complex lifting device is used, then lifting capability is sufficient, but storage space requirement increases
Solution Approach 1:
The lifting frame and link mechanism are designed to nest within the base structure when not in use. The frame can be collapsed or folded into a compact configuration that fits within or alongside the base, dramatically reducing storage volume while maintaining full lifting capability when deployed.
Solution Approach 2:
The device is divided into modular segments (base structure, lifting frame, link mechanism, blocking device) that can be independently positioned and stored. This segmentation allows the lifting components to be compacted separately from the base, optimizing storage space while preserving lifting capability.
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 device simplifies wheel lifting and positioning, requiring only one operation to lift and lock the wheel, reducing user effort and storage complexity while ensuring reliable and cost-efficient production.
Implementation Method 1
A blocking device is arranged for locking the manoeuvring lever at any desired pivotal position. The blocking device comprises a weight which is slidable along the frame leg and arranged to intersect the pivotal movement path of the manoeuvring lever and to be brought into frictional engagement with the frame leg
Data Source
AI summary
A wheel lifting device comprising a base structure with support means for being supported by a ground surface and a lifting frame with at least one wheel support member and a frame leg which extends upwardly at an angle to the ground surface. A link mechanism is connected to the base structure and to the lifting frame and a pivotal manoeuvring lever is connected to the link mechanism for lifting the lifting frame relative to the base structure. The blocking device for locking the manoeuvring lever at any desired pivotal position comprises a weight which is slidable along the frame leg and arranged to intersect the pivotal movement path of the manoeuvring lever and to be brought into frictional engagement with the frame leg when influenced by a force generated by the manoeuvring lever in order to block the lifting frame from downward movement relative to the base structure.