Brake Actuator Piston Seat Groove for Caulking-Free Guide Fixation
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Solution Overview
Problem
Conventional brake actuating devices require caulking, a time-consuming and costly process, to secure guide elements, which complicates manufacturing and increases costs.
Innovation Solution
A brake actuating device with a radial groove in the piston seat secures the guide element axially, eliminating the need for caulking by creating a form-fit that holds the guide element in position, allowing for efficient and cost-effective production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If caulking is used to secure the guide element, then the guide element is firmly fixed, but the manufacturing process becomes time-consuming and costly
Solution Approach 1:
The invention extracts the guide element from the complex caulking process by providing a dedicated axial receiving groove in the piston seat. The guide element is inserted into this groove and secured axially without requiring caulking operations, thereby separating the guidance function from the complex assembly process while maintaining firm fixation.
Solution Approach 2:
The axial receiving groove is pre-formed in the piston seat during manufacturing, creating a ready-made receptacle for the guide element. This preliminary preparation eliminates the need for subsequent caulking operations, as the groove is already in place to receive and secure the guide element axially.
2Reliability
If caulking is used to secure the guide element, then the guide element is firmly fixed, but the manufacturing complexity increases
Solution Approach 1:
The invention extracts the guide element from the complex caulking process by providing a dedicated axial receiving groove in the piston seat. The guide element is inserted into this groove and secured axially without requiring caulking operations, thereby separating the guidance function from the complex assembly process while maintaining firm fixation.
Solution Approach 2:
Instead of securing the guide element through external caulking operations after assembly, the invention inverts the approach by integrating the securing feature (axial receiving groove) directly into the piston seat structure. The guide element is held in place by the groove geometry itself, reversing the traditional sequence of assembly and fixation.
3Reliability
If caulking is used to secure the guide element, then the guide element is firmly fixed, but the production costs increase
Solution Approach 1:
The invention extracts the guide element from the complex caulking process by providing a dedicated axial receiving groove in the piston seat. The guide element is inserted into this groove and secured axially without requiring caulking operations, thereby separating the guidance function from the complex assembly process while maintaining firm fixation.
Solution Approach 2:
The axial receiving groove is pre-formed in the piston seat during manufacturing, creating a ready-made receptacle for the guide element. This preliminary preparation eliminates the need for subsequent caulking operations, as the groove is already in place to receive and secure the guide element axially.
Data Source
AI summary
In a brake actuating device, in particular a vehicle brake system. The brake actuating device includes a housing, in which a piston seat is disposed which is surrounded by a wall and comprises a receiving axis along which a piston to be coupled to a piston rod can be accommodated in the piston seat in an axially displaceable manner. At its end region which is directed toward the piston rod, the piston seat includes a guide section in which a guide element for guiding the piston rests radially against the wall. The guide element is axially held in position by means of a radial groove disposed in the guide section.