Oil Pump Chain Torsion Spring Layout for Uniform Tension
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Solution Overview
Problem
Conventional torsion springs in oil pump chain systems apply torque to the chain tensioner, resulting in an eccentric and non-uniform tension that misaligns the chain path, leading to inefficiencies in power transmission.
Innovation Solution
A new torsion spring design with a spiral configuration and c-shaped collar, where the coils are not stacked but coiled around each other, providing rotational torque without eccentric load, ensuring uniform tension distribution across the chain tensioner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a conventional torsion spring with stacked coils is used, then the spring can provide rotational torque to the chain tensioner, but the eccentric and non-uniform tension causes misalignment of the chain path
Solution Approach 1:
The torsion spring is divided into multiple separate coil elements (first coil, second coil, third coil, fourth coil) that are arranged in a specific spatial configuration rather than stacked. Each coil is positioned at different angular locations around the central axis, creating a distributed torque application system that eliminates eccentric loading and ensures uniform tension distribution across the chain tensioner, thereby maintaining proper chain path alignment.
2Volume of moving object
If the torsion spring coils are stacked, then the spring structure is compact, but the tension distribution becomes eccentric and non-uniform
Solution Approach 1:
Instead of stacking coils along the axial dimension, the invention distributes coils in the radial and angular dimensions, arranging them at different positions around the central axis. This dimensional reconfiguration maintains a compact overall structure while ensuring that torque is applied uniformly from multiple directions, eliminating eccentric loading and improving tension distribution reliability.
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 new spring design maintains uniform tension and alignment of the chain path, enhancing the efficiency and reliability of the oil pump chain system by eliminating misalignment issues.
Implementation Method 1
A torsion spring is set between the oil pump tensioner and the engine block and utilizes mechanical energy from the torsion spring elastic force via twisting to provide tension to the chain via the oil pump chain tensioner. The torsion spring exerts torque in proportion to the torsion spring angle.
Data Source
AI summary
A torsion spring for an oil pump chain tensioner for use in an engine. The torsion spring has: a second end; a leg connected to the second end through a hook bend; an outer coil connected to the leg having an outer coil outer circumference and an outer coil inner circumference; a first inner coil connected to the outer coil, the first inner coil having a first inner coil outer circumference and a first inner coil inner circumference, the outer coil inner circumference being adjacent to the first inner coil outer circumference; and a second inner c-shaped coil connected to the first inner coil through a bend back loop, the second inner coil having a second inner coil outer circumference and a second inner coil inner coil circumference and terminating in a first end, where the second inner coil outer circumference and the first coil inner circumference define a gap.