Guide Rail Fitting Structure for Window Regulator Assembly

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Solution Overview

Problem

Insert molding of bolts into cable guides is a complex and accuracy-dependent process, requiring precise dimensional alignment and increased assembly time in window regulators, making it difficult to achieve secure fixation without complications.

Innovation Solution

A guide rail fitting structure featuring a guide rail fitted into a fitting body with an insert, where the insert is partially covered by the guide rail, creating a detachment-inhibitive state visible through an outer opening, allowing for simplified assembly and secure fixation without the need for insert molding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If insert molding is used to attach the bolt to the cable guide, then the fixation strength is improved, but the manufacturing complexity and difficulty increase significantly

Engineering Contradiction:

Improvefixation strengthVSAvoidmanufacturing difficulty

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

The invention separates the bolt attachment process from the cable guide manufacturing process. Instead of insert molding the bolt directly into the cable guide in one complex step, the bolt is attached separately to a fitting body, which is then fitted into the cable guide. This segmentation reduces manufacturing difficulty while maintaining fixation strength.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The bolt is preliminarily attached to the fitting body before the final assembly with the cable guide. The fitting body serves as an intermediate component that already has the bolt secured to it, simplifying the final assembly step and reducing overall manufacturing complexity.

Inventive Principle:

Principle #10Preliminary action

2Strength

If insert molding is used to attach the bolt to the cable guide, then the fixation strength is improved, but the molding accuracy requirements increase

Engineering Contradiction:

Improvefixation strengthVSAvoidmolding accuracy

Core Design Contradiction:

StrengthVSManufacturing precision

Solution Approach 1:

By segmenting the attachment process into separate steps (bolt to fitting body, then fitting body to cable guide), the invention eliminates the need for high-precision insert molding. Each component can be manufactured with standard tolerances and assembled later, reducing molding accuracy requirements.

Inventive Principle:

Principle #1Segmentation

3Stability of the object's composition

If a shaft is attached to the cable guide and pulley is attached to the guide rail, then the structural stability is improved, but the assembly time increases due to multiple fitting operations

Engineering Contradiction:

Improvestructural stabilityVSAvoidassembly time

Core Design Contradiction:

Stability of the object's compositionVSLoss of time

Solution Approach 1:

The invention merges the bolt attachment and cable guide integration into a single fitting operation. The fitting body serves as a combined component that both secures the bolt and interfaces with the cable guide, reducing the number of separate fitting operations and assembly time.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The fitting body performs multiple functions: it attaches the bolt, interfaces with the cable guide, and provides structural support. This multi-functionality reduces the number of components and assembly steps while maintaining structural stability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Stability of the object's composition

If multiple components are attached through multiple fitting operations, then the structural stability is improved, but the number of assembly parts increases

Engineering Contradiction:

Improvestructural stabilityVSAvoidnumber of parts

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The fitting body combines multiple functions into a single component, reducing the total number of parts. Instead of separate components for bolt attachment and cable guide interface, the fitting body integrates both functions.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The fitting body serves as a universal component that performs multiple functions: bolt attachment, cable guide interfacing, and structural support. This multi-functionality reduces device complexity while maintaining structural stability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS10309140B2Guide rail fitting structure and window regulator

Publication Date: 2019.06.04 HI-LEX CORPORATION

AI summary

A guide rail fitting structure includes a guide rail, a fitting body, and an insert inserted into the fitting body. The guide rail is fitted into the fitting body. The fitting body includes a fitting section fitted onto an end of the guide rail, and an insertion hole into which the insert is inserted from outside the fitting body. The fitting section is fitted onto the guide rail such that the insert is at least partially covered with the guide rail, the insert gets into a detachment inhibitive state, and the insert in the detachment inhibitive state is visible through an opening on an outer surface of the fitting body. This configuration allows easy assembly.