Wiper Flow Guider Spring Rail Fixation Mechanism
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Solution Overview
Problem
Existing wiper flow guiders fail to securely fix the spring rail, leading to breakaway issues and difficulties in assembly due to open-end configurations, which increase manufacturing costs and compromise the fixing mechanism's effectiveness.
Innovation Solution
A flow guider with a longitudinal slot and side portions that include a connecting portion, supporting portions, and limiting edges to enclose the spring rail, along with stoppers and notches to prevent breakaway and facilitate assembly, ensuring secure fixation and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the end face of the flow guider is configured as open to receive the spring rail, then the assembly process is simplified, but the spring rail can pass through and the fixing effect is poor
Solution Approach 1:
The flow guider is divided into multiple functional segments: the receiving cavity for accommodating the spring rail, the stop portion with groove structure for limiting axial movement, and the side surface features for lateral positioning. This segmentation allows each part to perform its specific function effectively while maintaining overall assembly simplicity
Solution Approach 2:
The stop portion acts as an intermediary element between the spring rail and the flow guider body. The groove structure in the stop portion engages with corresponding features on the spring rail, providing a reliable stopping mechanism that prevents the spring rail from passing through while maintaining easy assembly
2Ease of manufacture
If the end face of the flow guider is closed to improve manufacturing process and material cost, then manufacturing cost is reduced, but the spring rail cannot be appropriately enclosed and is prone to breakaway
Solution Approach 1:
Instead of closing the end face to prevent spring rail passage, the invention inverts the approach by using an open end face with internal stopping features (groove structure in the stop portion) that actively engage with the spring rail to prevent breakaway. This maintains manufacturing simplicity while achieving reliable fixation
3Reliability
If a rectangular stop portion with smaller width end is used to cooperate with the spring rail groove, then longitudinal displacement is prevented, but assembly becomes difficult and the stop portion distorts and damages after repeated assemblies
Solution Approach 1:
The stop portion incorporates curved or rounded groove structures instead of sharp rectangular corners. This curvature allows the stop portion to flex and deform elastically during assembly and disassembly operations, reducing stress concentration and preventing permanent distortion or damage after repeated use while still effectively preventing longitudinal displacement
Data Source
AI summary
A flow guider and a wiper assembly for wiper, wherein a spring rail is detachably received in the flow guider which is provided with a longitudinal slot providing along the extension direction of the flow guider for accommodating the spring rail, and a receiving portion being able to receive the edges of the spring rail is provided on the side portions of the flow guider forming the longitudinal slot, for restricting the breakaway of the spring rail from the flow guider, wherein at least one stopper is provided on the longitudinal side walls of the longitudinal slot of the flow guider, a stop portion is provided on the spring rail for cooperating with the stopper, and the mutual cooperation of the stopper and the stop portion can stop the breakaway of the spring rail from the flow guider in the extension direction of the flow guider.