Accelerator Pedal Force Adjustment via Lead Screw Carrier
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Solution Overview
Problem
Conventional accelerator pedal apparatuses require replacing parts to adjust pedal force, limiting their common use and not fully satisfying safety rules for pedal force characteristics.
Innovation Solution
A pedal force adjusting apparatus using a lead screw mechanism within a carrier housing system, allowing for the regulation of pedal force through the movement of upper and lower carriers without exchanging the friction shoe or resilient member, utilizing a tool to rotate the lead screw and adjust the force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the friction shoe and resilient member are changed to new ones to adjust pedal force, then the pedal force can be adjusted, but the device complexity and part replacement requirements increase
Solution Approach 1:
The patent changes the physical state/position of the resilient member by moving it along the pedal arm's rotation path. This positional parameter change adjusts the spring's compression point, thereby modifying the pedal force without replacing any parts. The resilient member remains the same component but exerts different forces based on its adjusted position.
Solution Approach 2:
The patent introduces a dynamic adjustment mechanism where the resilient member can be repositioned along the pedal arm during operation. This dynamic repositioning capability allows the pedal force to be adjusted on-demand without disassembling or replacing components, transforming a static system into a dynamically adjustable one.
2Force
If the friction shoe and resilient member are replaced to adjust pedal force, then the pedal force characteristics can be modified, but the ease of operation and common useability decrease
Solution Approach 1:
The patent enables the operator to adjust the pedal force using the existing components and structure of the accelerator pedal assembly. The adjustment mechanism utilizes the pedal arm's own rotation and the resilient member's existing elasticity, allowing the system to serve itself for adjustment purposes without external specialized parts or complex procedures.
Solution Approach 2:
The patent positions the resilient member at predetermined locations along the pedal arm that correspond to different pedal force requirements. These pre-established positions allow for quick adjustment by simply moving the resilient member to the appropriate location, eliminating the need for complex calculations or trial-and-error adjustments.
3Force
If parts are replaced to adjust pedal force, then the pedal force can be modified, but the time required for adjustment increases
Solution Approach 1:
The patent creates a dynamically adjustable system where the resilient member can be repositioned during operation. This eliminates the time-consuming process of removing old parts and installing new ones, as the adjustment can be performed in-place by simply moving the resilient member to a different position on the pedal arm.
Solution Approach 2:
By changing the position parameter of the resilient member rather than replacing it, the system achieves rapid adjustment. The resilient member's new position immediately alters the spring compression characteristics, providing instantaneous pedal force modification without the time loss associated with part replacement procedures.
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
Enables easy adjustment of pedal force while ensuring compliance with safety rules, allowing for common use of the accelerator pedal without part replacement.
Implementation Method 1
a lead screw (30) the opposite ends of which pass through a carrier housing (10) and a carrier housing cover (20) so as to be rotated about an axis
Implementation Method 2
a resilient member (5) having one end supported by the spring plate (3) and an opposite end supported by an inner surface of the pedal arm housing (1) facing the spring plate (3)
Implementation Method 3
a friction shoe (4) coupled to an end of the pedal arm (2) located within the pedal arm housing (1) to frictionally interferes with the inner wall surface of the pedal arm housing (1) drum
Data Source
AI summary
A pedal force adjusting apparatus for an accelerator pedal regulates a resilient force of a resilient member through movement of an upper carrier and a lower carrier due to rotation of a lead screw. Accordingly, a pedal force of a pedal arm can be easily regulated if necessary.