Vehicle Seat Pumping Device Brake Roller Gap
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Solution Overview
Problem
Conventional seat pumping devices for vehicles experience noise and wear due to misalignment or external impacts causing friction between the brake mechanism and the housing, leading to durability degradation.
Innovation Solution
The design incorporates a brake mechanism with boss portions and a brake roller that maintain a gap with the housing, using inclined surfaces to ensure the brake roller contacts the housing while the boss portions do not, preventing friction and wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the brake mechanism is positioned close to the housing to maintain compact structure, then device complexity is reduced, but friction and wear occur causing noise and durability degradation
Solution Approach 1:
A brake roller is introduced as an intermediary component between the brake mechanism and the housing. The brake roller contacts the inner circumferential surface of the housing, while the brake mechanism's outer circumferential surface maintains a gap with the housing, preventing direct friction and wear between these components.
2Stability of the object's composition
If the brake mechanism contacts the housing to provide structural support, then stability is improved, but friction noise and wear occur
Solution Approach 1:
The brake roller serves as a mediator that provides the necessary contact with the housing for structural stability, while preventing the brake mechanism itself from contacting the housing, thereby eliminating friction noise and wear.
3Manufacturing precision
If misalignment or external impact causes the brake mechanism to contact the housing, then positioning is maintained, but wear and durability degradation occur
Solution Approach 1:
The brake roller is positioned beforehand to make contact with the housing, creating a protective interface that prevents the brake mechanism from contacting the housing even under external impacts or misalignment conditions, thereby preventing wear and durability degradation.
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
This configuration effectively reduces friction noise and durability issues, enhancing the pumping device's performance and marketability by preventing contact between the brake mechanism and the housing.
Implementation Method 1
the brake roller is brought into contact with the inner circumferential surface of the housing... preventing contact between the brake mechanism and the housing
Data Source
AI summary
Disclosed is a pumping device for a seat of a vehicle, the device including: a cam mechanism rotating along with a lever; a clutch mechanism receiving power from the cam mechanism; a housing accommodating the cam mechanism and the clutch mechanism therein; a brake mechanism accommodated in the housing to receive power from the clutch mechanism, and configured such that boss portions protrude along an outer circumferential surface thereof, outer end sides of the boss portions face an inner circumferential surface of the housing, and a pressing portion protruding from the clutch mechanism is disposed between a boss portion and a neighboring boss portion; and a brake roller provided at opposite sides of each of the boss portions of the brake mechanism to be disposed between the boss portion and the pressing portion.