Tow-Hook Rack Base With Sliding Tilt Frame for Rear Door Access

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Solution Overview

Problem

Conventional rear-mounted bicycle racks, ski racks, and baggage carriers for motor vehicles are not universally compatible with different types of vehicles, requiring separate purchases and significant storage space due to the need for multiple configurations to accommodate vehicles with doors that open on vertical or horizontal axes.

Innovation Solution

A rear-mounted bicycle rack, ski rack, or baggage carrier with a base that includes telescopic arms for horizontal translation and rotational hinges, allowing the frame to adjust to fit any vehicle type while enabling the rear door to open, regardless of the door's axis of rotation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a base with a fixed frame is used, then the structure is simple and reliable, but the rear door cannot be opened on all motor vehicle types

Engineering Contradiction:

Improvecompatibility with different motor vehicle typesVSAvoidbase structure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The base frame is designed with dynamic movement capabilities, allowing it to rotate about a horizontal axis and translate horizontally. This enables the frame to adapt its position and orientation to accommodate different door opening mechanisms (vertical axis rotation for vans, horizontal axis rotation for automobiles) while maintaining a relatively simple overall structure.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The base is designed as a universal platform that can be installed on different motor vehicle types (automobiles and vans) and accommodate different door configurations. The frame's ability to rotate and translate horizontally provides multi-functionality, allowing a single base design to serve multiple vehicle types without requiring separate specialized bases.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If separate bases are provided for different motor vehicle types, then each base is optimized for its specific vehicle type, but storage space requirements increase significantly

Engineering Contradiction:

Improvedoor opening functionalityVSAvoidstorage space for multiple base types

Core Design Contradiction:

ReliabilityVSVolume of stationary object

Solution Approach 1:

Instead of maintaining separate base inventories for different vehicle types, retailers can stock a single universal base design that accommodates both automobiles and vans through its rotational and translational capabilities. This eliminates the need for multiple specialized base types and significantly reduces storage space requirements while maintaining reliable door opening functionality across all vehicle types.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4552927B1Rear-mounted bicycle rack, ski rack, baggage rack, baggage carrier for motor vehicle

Publication Date: 2026.04.29 PERUZZO MARTINA

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AI summary

A base (10) for a rear-mounted bicycle rack, ski rack, baggage rack, baggage carrier (1, 3) for a motor vehicle (2), the base (10) comprising: - a portion (11) for association with a tow hook (5) of the motor vehicle (2), - a frame (12); the base (10) comprises: - means (17) for the horizontal translation of the frame (12), - and means (18) for the rotation of the frame (12) about a substantially horizontal axis (A).