Compact Winch Gearbox Layout for High Pulling Power in Tight Spaces
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Modern four-wheel drive vehicles have limited space for aftermarket winch accessories due to the large size of conventional winch motors and their controllers, which require significant space and are often difficult to mount.
Innovation Solution
A compact winch system utilizing spur gears and planetary gear stages to multiply torque while offsetting the motor to accommodate the motor controller, or using smaller motors and controllers with a first planetary gearbox assembly for reduced size and increased pulling power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional DC motors with high horsepower are used, then pulling power is improved, but the physical size of the motor and controller increases
Solution Approach 1:
The patent replaces the conventional direct mechanical power transmission system with an electrical field-based solution. A magnetic motor controller uses electromagnetic fields to control motor operation, eliminating the need for large mechanical components like traditional motor controllers and switches. This substitution allows high pulling power to be achieved through optimized electromagnetic interaction rather than brute-force mechanical sizing.
Solution Approach 2:
The patent changes the operating parameters of the motor system by using variable voltage control (12V, 24V, or 48V systems) and pulse-width modulation techniques. By dynamically adjusting voltage and duty cycle parameters, the system achieves high pulling power when needed while maintaining compact physical dimensions through efficient electrical control rather than oversized components.
2Power
If larger motors and controllers are used to maintain pulling power, then winch performance is improved, but the space required for mounting increases
Solution Approach 1:
The patent implements a nested arrangement where the magnetic motor controller is integrated within or adjacent to the motor assembly itself. The controller electronics are housed in a compact form factor that fits within the existing motor mounting envelope, eliminating the need for separate large controller housings and reducing overall mounting footprint while maintaining full winch performance.
Solution Approach 2:
The patent transitions from a planar, horizontally-oriented winch assembly to a three-dimensional vertically-oriented configuration. The motor, controller, and drum are stacked vertically, utilizing the vertical dimension for mounting. This dimensional change allows the system to achieve high performance within a compact horizontal footprint suitable for modern vehicle bumpers.
3Ease of operation
If conventional motor controller designs are used, then control functionality is achieved, but the physical footprint and complexity increase
Solution Approach 1:
The patent replaces conventional mechanical switch-based motor controllers with solid-state electronic control using magnetic field sensing and pulse-width modulation. This substitution eliminates bulky mechanical components and large heat sinks, reducing controller volume while maintaining full control functionality including forward, reverse, and braking operations.
Solution Approach 2:
The magnetic motor controller is designed as a universal control system that can operate with different motor types and voltage configurations (12V, 24V, 48V). By integrating multiple control functions (speed control, direction control, current limiting, and protection) into a single compact electronic unit, the system achieves comprehensive control functionality without requiring multiple separate components, thereby reducing overall controller size and complexity.
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 achieves a compact design that fits in tight vehicle spaces while maintaining the necessary pulling power, allowing for efficient winching operations with reduced space requirements.
Implementation Method 1
The Conventional Winch Motor sends power through a driveshaft and into two or three stages of planetary gears that develop the torque necessary to drive the winch drum
Implementation Method 2
A compact winch system utilizing spur gears and planetary gear stages to multiply torque while offsetting the motor to accommodate the motor controller
Data Source
AI summary
The present invention provides a compact winch system that reduces the required space for a winch after-market accessory for a vehicle by using a small DC motor with a planetary gearbox assembly having at least four planetary stages and a gear control assembly that together provide a choice of a low range gear reduction and a high range gear reduction that allows the motor to retain the pulling power of a conventional winch system. Alternatively, the compact winch system creates its compactness through the use of a set of spur gears that multiply the torque of the motor while simultaneously offsetting the motor in order to create space for its motor controller.