Universal Wiper Blade Connecting Device with Protrusions
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Solution Overview
Problem
Existing windscreen wiper devices lack a universal connection mechanism that allows for easy interchangeability between different wiper blades and oscillating arms, limiting the availability of affordable, non-original wiper blades that can fit original oscillating arms.
Innovation Solution
A universal connecting device with protrusions and co-axial through holes is used, allowing for various types of joint parts to be connected, enabling a snap or bayonet-style attachment that supports multiple interconnection types between the wiper blade and oscillating arm, facilitating the use of cheaper, easily manufactured joint parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a universal connecting device with protrusions and co-axial through holes is used, then adaptability and versatility are improved, but device complexity increases
Solution Approach 1:
The connecting device is designed as a universal base part with protrusions and co-axial through holes that can accommodate multiple types of joint parts (resilient tongue, bayonet-style, snap-fit). This single connecting device structure serves multiple functions by supporting different interconnection types between the wiper blade and oscillating arm, enabling compatibility with various oscillating arm designs without requiring multiple specialized connecting devices.
2Ease of manufacture
If different types of joint parts are used for different interconnection types, then ease of manufacture is improved, but device complexity increases
Solution Approach 1:
The connection system is divided into two independent segments: a universal connecting device (base part) and interchangeable joint parts. The connecting device remains constant and is fixed to the wiper blade, while different joint parts are designed for specific oscillating arm types. This segmentation allows each joint part to be optimized for its specific function and manufactured independently, simplifying production while maintaining overall system versatility.
3Ease of operation
If a resilient tongue mechanism is used for retention, then ease of operation is improved, but reliability may worsen
Solution Approach 1:
The resilient tongue is designed to be dynamically deflectable during installation and removal operations, allowing easy manipulation. However, once the oscillating arm is installed, the tongue assumes a fixed, stable position that provides reliable retention. The dynamic flexibility during operation transitions to static stability during use, achieving both ease of operation and connection reliability.
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 provides a universal connection system that allows for the manufacture of wiper blade and connecting device units compatible with various oscillating arms, enabling car drivers to use affordable, non-original wiper blades with original arms, while ensuring secure retention and easy installation and removal.
Implementation Method 1
said joint part comprises at least one resilient tongue engaging in a correspondingly shaped hole provided in the oscillating arm, wherein said resilient tongue is rotatable along a hinge axis between an outward position retaining the wiper blade onto the oscillating arm and an inward position releasing the wiper blade from the oscillating arm
Implementation Method 2
The connecting device is preferably fixedly connected to the longitudinal strips through a welding, brazing ("soldering"), glueing or clamping operation
Implementation Method 3
The connecting device is preferably fixedly connected to the longitudinal strips through a welding, brazing ("soldering"), glueing or clamping operation
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3C
AI summary
A windscreen wiper device comprising an elastic, elongated carrier element, as well as an elongated wiper blade (2) of a flexible material, which can be placed in abutment with a windscreen to be wiped, which wiper blade (2) includes opposing longitudinal grooves (3) on its longitudinal sides, in which grooves (3) spaced-apart longitudinal strips (4) of the carrier element are disposed, wherein neighbouring ends (5) of said longitudinal strips (4) are interconnected by a respective connecting piece (6), which windscreen wiper device comprises a connecting device (7) for an oscillating arm (8), wherein said oscillating arm (8) is pivotally connected to said connecting device (7) about a pivot axis near one end, with the interposition of a joint part (12), with the special feature that said joint part (12) is detachably connected to said connecting device (7) by engaging protrusions (9) of said connecting device (7), at the location of said pivot axis, in recesses (11) provided in said joint part (12), and wherein said protrusions (9) are provided with co-axial through holes (10).