Linear Reciprocating Wiper Parking Structure
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Solution Overview
Problem
Conventional linear reciprocating wiper systems for vehicles with reduced rear window height obstruct the driver's view and are aesthetically unappealing, while also being prone to damage due to their exposed parking position and design.
Innovation Solution
A linear reciprocating wiper system with a parking structure that includes a guide rail, a carrier unit, a cam member, a wiper arm, and pressing members that align the wiper arm perpendicular and parallel to the guide rail, allowing for secure parking and operation without obstructing the driver's view and reducing damage risk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a conventional linear reciprocating wiper system is used with reduced rear window height, then the wipe area requirement can be met, but the driver's rear view is obstructed and the appearance is unaesthetic
Solution Approach 1:
The wiper arm is designed to dynamically change its orientation between two states: perpendicular to the guide rail during wiping operation, and parallel to the guide rail during parking. This dynamic reconfiguration allows the wiper to provide full wipe area coverage when needed while retracting to avoid obstructing the driver's view when stationary
Solution Approach 2:
The invention introduces a rotational degree of freedom to the wiper arm, allowing it to pivot between perpendicular and parallel orientations relative to the guide rail. This dimensional change enables the wiper to transition between functional and storage positions, effectively using the rotational dimension to resolve the conflict between wipe area coverage and view obstruction
2Device complexity
If the wiper parking position is exposed to the glass with the front end of the wiper blade facing upward, then the structure is simple, but durability is not secured and the wiper arm may be damaged by equipment such as automatic washer
Solution Approach 1:
The wiper arm automatically adopts different orientations based on its operational state: perpendicular during wiping and parallel during parking. This dynamic positioning ensures that during parking, the wiper arm lies flat parallel to the guide rail, protecting the blade from upward-facing exposure to water jets and other equipment, thereby improving durability without significantly complicating the structure
Solution Approach 2:
The system uses the existing reciprocating motion and pressing members to automatically position the wiper arm in the protective parallel orientation during parking, without requiring additional actuators or complex control mechanisms. The wiper serves its own parking and protection function through the integrated mechanism
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
The system effectively secures the wiper arm in a parked position parallel to the guide rail, preventing damage and maintaining an unobstructed view, while ensuring effective cleaning by maintaining the wiper arm perpendicular to the guide rail during operation.
Implementation Method 1
a cam member installed to be rotatable on the carrier unit and provided with a pivot shaft to which a wiper arm is coupled
Implementation Method 2
a second pressing member for aligning the wiper arm in a direction parallel to the guide rail by rotating the cam member while the carrier unit is moving in a reverse direction along the guide rail
Implementation Method 3
a driving wheel installed at one end of the guide rail and rotated by a driving motor
Data Source
AI summary
A reciprocating wiper system according to the present invention may include a guide rail; a carrier unit coupled to be slidable in the guide rail and installed to reciprocate in a longitudinal direction of the guide rail; a cam member installed to be rotatable on the carrier unit; a wiper arm coupled to the cam member to move integrally with the cam member and to which a blade is coupled; a first pressing member for aligning the wiper arm in a direction perpendicular to the guide rail by rotating the cam member while the carrier unit is moving in a forward direction along the guide rail; and a second pressing member for aligning the wiper arm in a direction parallel to the guide rail by rotating the cam member while the carrier unit is moving in a reverse direction along the guide rail.