Hinged Push-Rod Guide Coupling for Vehicle Brake Chambers
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Solution Overview
Problem
Existing coupling structures for push-rod guides in vehicle brake chambers face challenges in securing a firm coupling strength and efficient assembly, often requiring separate coupling members that complicate the production process and may detach due to vibrations.
Innovation Solution
A coupling structure that integrates a push-rod guide with a push-rod guide cover, where the guide is formed by pivoting semicircular half-members connected by a hinge, and the guide is fixed using a return spring and an accommodation groove in the cover, eliminating the need for separate coupling members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a push-rod guide is assembled using a separate coupling member, then the push-rod guide can be fixed to the bottom housing, but the coupling strength is insufficient and additional fixing is required
Solution Approach 1:
The push-rod guide and push-rod guide cover are merged into a single integrated component that is injection-molded as one piece. This eliminates the need for separate coupling members and additional fixing operations, while maintaining firm coupling strength through the integrated structure that directly engages with the bottom housing.
Solution Approach 2:
The integrated push-rod guide and cover structure serves multiple functions simultaneously: it guides the push-rod movement, provides structural support, and secures the assembly to the bottom housing all in one component, eliminating the need for separate coupling members.
2Ease of manufacture
If a separate coupling member is used to assemble the push-rod guide, then the guide can be attached to the push-rod, but the production process becomes more complex and time-consuming
Solution Approach 1:
The push-rod guide and cover are combined into a single injection-molded component, eliminating multiple assembly steps and coupling members. This simplifies the manufacturing process and increases production efficiency by reducing the number of parts and assembly operations required.
Solution Approach 2:
The push-rod guide and cover are pre-formed as an integrated unit through injection molding, with the guide structure and cover already properly positioned and connected. This preliminary formation eliminates the need for subsequent assembly operations and coupling member installation.
3Reliability
If a fixing member is used to secure the push-rod guide to the bottom housing, then the guide can be fixed in place, but additional fixing operations are required and assembly becomes more complex
Solution Approach 1:
The push-rod guide and cover are merged into one integrated component that incorporates the fixing function directly into its structure. The integrated design includes features that engage with the bottom housing, eliminating the need for separate fixing members and simplifying the assembly process while maintaining reliable fixation.
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 solution enables a simple and secure coupling of the push-rod guide to the brake chamber's bottom surface, enhancing production efficiency and maintaining firm coupling strength without additional components, thus addressing the assembly and stability issues of existing systems.
Implementation Method 1
the push-rod guide cover is coupled to the push-rod guide and supported by the return spring to fix the push-rod guide
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
Disclosed is a coupling structure of a push-rod guide and a push-rod guide cover of a brake chamber for a vehicle, in which a pair of half members having a semicircular plate shape are connected by a hinge and assembled at the axial side of the push-rod to form a circular plate shape, a push-rod opening is formed at a center of the circular plate to guide movement of the push-rod, a protrusion protruding upwards is provided at a center of the push-rod guide to form a step in a radial direction of the push-rod guide, and an accommodation groove corresponding to the step is formed at an inner circumference of the push-rod guide cover. Since the pair of half members pivot about the hinge shaft, the push-rod guide may be simply coupled to the side of the push-rod. Also, since the push-rod guide is inserted and fixed in the accommodation groove formed in the push-rod guide cover, it is possible to maintain a firm coupling strength and improve the production efficiency without any separate coupling member.