Rotary Snap Connection for Wiper Cleaning Device
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cleaning devices for windshield wiper systems are difficult to mount and dismount, and their secure attachment to the wiper arm is challenging, especially under forces like those encountered in vehicle cleaning systems, leading to unreliable detachment.
Innovation Solution
A cleaning device with guide means that allow for a rotary latching connection between the cleaning device and the wiper arm, featuring separate latching elements and guide means optimized for functionality, ensuring secure attachment and easy assembly/disassembly through a torque-based mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cleaning device is integrated within the cross section of the wiper arm, then the cleaning device is securely attached to the wiper arm, but the arrangement and assembly become relatively difficult and separate exchange for repair or maintenance is very difficult
Solution Approach 1:
The cleaning device is separated from the wiper arm into two independent components that connect via a latching mechanism. The cleaning device can be detached and replaced independently without affecting the wiper arm structure, enabling easy maintenance while maintaining secure attachment during operation.
Solution Approach 2:
The latching connection incorporates a clip element that can dynamically transition between locked and unlocked states. This allows the cleaning device to be securely attached during normal operation but easily detached when needed for maintenance or replacement.
2Ease of operation
If a cleaning device is connected via a simple latching connection, then the assembly is simple, but the detachment under forces acting in a single direction (such as washing brushes in a vehicle cleaning system) cannot be reliably avoided
Solution Approach 1:
The latching connection uses an asymmetric clip element design where the engagement geometry allows easy insertion but resists removal under single-direction forces. The clip element's shape creates a mechanical advantage that secures the connection against detachment forces while maintaining simple assembly.
3Reliability
If a cleaning device is integrated within the cross section of the wiper arm, then the cleaning device is securely attached to the wiper arm, but the width of the wiper arm must be enlarged which increases device complexity
Solution Approach 1:
The cleaning device is separated from the wiper arm into two independent components that connect via a latching mechanism. The cleaning device can be detached and replaced independently without affecting the wiper arm structure, enabling easy maintenance while maintaining secure attachment during operation.
Data Source
Figure 1~5
Figure 6~8
Figure 9~10
AI summary
The invention relates to a cleaning device (10; 10a) for a wiper arm (1) of a windshield wiper system (100), wherein the cleaning device (10; 10a) has at least one spray nozzle (21, 22) for a cleaning fluid, wherein the cleaning device (10; 10a) is configured to form a snap connection (30) on the wiper arm (1), and wherein the snap connection (30) on the cleaning device (10; 10a) has at least one clip element in the form of an elastically designed snap element (40; 40a) configured to interact with a snap receptacle (54; 54a) on the wiper arm (1). According to the invention, the cleaning device (10; 10a) has first guide means (35) configured to enable the cleaning device (10; 10a) to rotate in a rotary axis (37) to form the snap connection (30).