Flexible Rod Film Application Device for Complex Vehicle Surfaces

Solution Overview

Problem

Existing film application devices struggle to apply adhesive-backed films to objects with varying sloping angles, particularly those with both moderate and great sloping angles, such as vehicle roofs and side walls, due to limitations in conforming to complex shapes and maintaining tension.

Innovation Solution

A film application device featuring a first rod that extends in a first direction, deforms to conform to the object's shape, and moves in a second direction, with tensioning and pressure roller mechanisms to ensure proper application, along with a second rod for applying films to side walls, and a frame body that supports and tensions the film to match the object's curvature.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a rigid rod is used to apply film to moderate sloping angles, then the application is simple and effective, but the rod cannot conform to locations with great sloping angles

Engineering Contradiction:
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The rod is designed with a flexible structure that allows it to dynamically change its shape and conform to different sloping angles of the vehicle body. The rod can bend and adapt its curvature to match both moderate roof surfaces and great angle side wall surfaces, enabling a single device to handle multiple application scenarios without requiring multiple specialized rods.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The rod's physical parameters, specifically its curvature and flexibility, are designed to change according to the application surface. The rod can adjust its effective radius of curvature to match different sloping angles, transforming from a rigid linear form to a flexible curved form that adapts to the target surface geometry.

Inventive Principle:
Principle #35Parameter changes

2Shape

If tension is applied to the rod to help it conform to the object shape, then conformability improves, but the rod may deform excessively or lose structural integrity

Engineering Contradiction:
Core Design Contradiction:
ShapeVSStrength

Solution Approach 1:

The rod employs a composite structure with controlled elasticity parameters that allow it to flex within specific limits. The material and structural design enable the rod to achieve sufficient curvature for conforming to vehicle surfaces while maintaining adequate stiffness to prevent excessive deformation or collapse under tension forces.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The rod is constructed using composite materials or a composite structure combining rigid and flexible elements. This allows the rod to exhibit both flexibility for conforming to surfaces and structural integrity for maintaining shape control, achieving a balance between adaptability and strength through material composition.

Inventive Principle:
Principle #40Composite materials

3Productivity

If a single rod is used for film application, then the device is simple, but it cannot effectively apply film to both roof and side wall locations with different orientations

Engineering Contradiction:
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The rod is designed as a multi-functional tool that can effectively apply film to different vehicle body locations including the roof and side walls. By incorporating adjustable tension mechanisms and flexible conforming capabilities, the single rod structure can adapt to various orientations and surface geometries, replacing the need for multiple specialized application tools.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The rod incorporates dynamic adjustment capabilities that allow it to change its operational characteristics based on the application location. The rod can adjust its tension, curvature, and pressing force dynamically to suit different surfaces, enabling efficient application across diverse geometries while maintaining ease of operation through a unified control mechanism.

Inventive Principle:
Principle #15Dynamics

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

Enables excellent film application to both moderate and great sloping angles by deforming to match the object's shape, ensuring proper tension and pressing force, thereby facilitating efficient application to complex vehicle surfaces.

Implementation Method 1

a first rod that extends in a first direction that intersects a vertical direction, presses on the film disposed above the object from an upper side, deforms and conforms to a shape of the object

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

a tensioning part that imparts tension outward in the first direction to at least a first end side in the first direction of the first rod

Methodology Applied
Scientific EffectTension: Tension

Implementation Method 3

a movement part that moves the first rod in the vertical direction

Methodology Applied
Scientific EffectGravity: Gravitation

Implementation Method 4

a first pressure roller that moves with the first rod while pressing the first rod against the object

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS11173651B2Film application device and film application method
Publication Date: 2021.11.16
  • US11173651B2 patent drawing
  • US11173651B2 patent drawing
  • US11173651B2 patent drawing

AI summary

A film application device for applying a film to an object, the device including a film supporting unit that disposes a film above the object; a first rod that extends in a first direction that intersects a vertical direction, presses on the film disposed above the object from an upper side, deforms and conforms to a shape of the object, and moves in a second direction that intersects the first direction and the vertical direction; a tensioning part that imparts tension outward in the first 0 direction on at least a first end side in the first direction of the first rod; and a movement part that moves the first rod in the vertical direction.