Door Check Housing with Concentric Elevations for Tolerance Compensation
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Solution Overview
Problem
Existing door checks face challenges in compensating for manufacturing tolerances, particularly in the spring system, leading to inefficiencies and potential deformation of the housing and spring system.
Innovation Solution
A holder housing design with a concentrically arranged elevation on the underside of the end piece, allowing for adjustable stop surfaces to accommodate manufacturing deviations and adjust the prestressing force of the spring system, ensuring flexible compensation for tolerances and preventing deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid housing structure is used to contain the spring system and brake element, then structural strength is improved, but the ability to compensate for manufacturing tolerances deteriorates
Solution Approach 1:
The housing is designed with movable walls that can deflect dynamically to accommodate manufacturing tolerances. The first and second walls are capable of moving relative to each other, allowing the housing to adapt to variations in spring system dimensions while maintaining structural integrity through the rigid housing framework.
Solution Approach 2:
The housing structure allows for changes in positional parameters of the spring system through the movable walls. By enabling the walls to move within defined ranges, the system can compensate for tolerance variations without requiring precise manufacturing, thus resolving the contradiction between structural strength and tolerance compensation.
2Strength
If the housing is made of metal for strength, then structural strength is improved, but adaptability to tolerance variations deteriorates
Solution Approach 1:
The metal housing incorporates movable walls that can dynamically adjust their positions. This dynamic capability allows the rigid metal structure to adapt to tolerance variations in the spring system, combining the strength of metal with the adaptability of movable components.
Solution Approach 2:
The housing is segmented into fixed structural elements and movable wall portions. This segmentation allows the rigid housing to maintain its strength while the movable portions provide adaptability to tolerance variations, resolving the contradiction between material strength and adaptability.
3Device complexity
If a single-piece housing design is used for simplicity, then device complexity is reduced, but the ability to adjust spring system preload deteriorates
Solution Approach 1:
The movable walls enable dynamic adjustment of the spring system preload without requiring a complex multi-piece housing design. The simplicity of the single-piece housing is maintained while the movable walls provide the necessary adjustability, resolving the contradiction between design simplicity and preload adjustment 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
Enables effective compensation for manufacturing tolerances, allowing for precise adjustment of the spring system's force on the brake body, thereby improving the door check's functionality and reliability while preventing deformation under high forces.
Implementation Method 1
a spring system (40) biasing the brake element (50) towards the first guide surface (21a, 21b)
Data Source
Figure 1
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AI summary
The invention relates to a retainer housing, in particular for a door check (30), comprising a first housing part (2) with a cavity (3) for receiving a brake body (50) and a spring system (40) of a door check (30), the first housing part (2) having a first end (2b) and a second end (2c), and a closing piece (104) which is situated on one of the first end (2b) and second end (2c) of the housing part, the closing piece (104) having an upper face (104a) and a lower face (104b). A retainer housing and a door check which provide a flexible and cost-effective possibility of compensating for manufacturing tolerances of the components used, in particular of the spring system, are created according to the invention in that multiple elevations (6) are arranged on the lower face (4b; 104b) of the closing piece (4; 104), concentrically around a centre point of the lower face (4b; 104b), wherein the elevations (6) have a stop face (7) for a spring system (40) of a door check (30).