Bidirectional Mechanical Converter for Compact Manual Tools
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Solution Overview
Problem
Existing manual turning tools with mechanical converters for bidirectional torque and speed increase have complex structures, making them heavy, bulky, and difficult to manufacture, with separate components for direction switching and speed increase.
Innovation Solution
A speed increasing bidirectional mechanical converter using a planet gear unit with a reversing mechanism, incorporating one-way clutches and ring gears to simplify the structure, reduce weight and space, and achieve bidirectional operation with a single mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate direction switching and speed increasing mechanisms are used, then the tool can achieve bidirectional operation and speed increase, but the structure becomes complicated, weight increases, and space occupied increases
Solution Approach 1:
The patent combines the direction switching function and speed increasing function into a single integrated mechanism. The planet gear unit serves dual purposes: it acts as both the direction switching mechanism and the speed increasing mechanism, eliminating the need for separate components. This merging reduces structural complexity while maintaining bidirectional operation capability and speed increase functionality.
2Adaptability or versatility
If separate direction switching and speed increasing mechanisms are used, then the tool can achieve bidirectional operation and speed increase, but the weight and space occupied increase
Solution Approach 1:
The patent merges the direction switching mechanism and speed increasing mechanism into one integrated planet gear unit, eliminating redundant components. This reduction in component count directly decreases the overall weight of the mechanical converter while preserving both bidirectional operation capability and speed increase functionality.
3Adaptability or versatility
If separate direction switching and speed increasing mechanisms are used, then the tool can achieve bidirectional operation and speed increase, but the space occupied inside the tool increases
Solution Approach 1:
The patent integrates the direction switching and speed increasing functions into a single compact planet gear unit. This consolidation eliminates the need for separate mechanisms, thereby reducing the overall volume occupied by the converter inside the tool while maintaining full bidirectional operation capability and speed increase functionality.
4Productivity
If a planet gear unit is added for speed increase, then the efficiency is increased, but the structure becomes more complex
Solution Approach 1:
The patent designs the planet gear unit to serve multiple functions simultaneously: it provides speed increase, enables bidirectional operation, and acts as the direction switching mechanism. This multi-functionality approach increases tool efficiency through speed multiplication while avoiding the need for additional separate mechanisms, thus limiting the increase in structural 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 solution simplifies the structure, reduces weight and space, and enhances efficiency by allowing the tool to operate at the same or triple speed in different directions, depending on handle rotation, while maintaining a compact design.
Implementation Method 1
a speed increasing planet gear unit, which includes a first ring gear, a planet gear, a sun gear and a planet carrier, wherein the planet gear is mounted on the planet carrier, the planet gear is arranged between the first ring gear and the sun gear, and the first ring gear rotates in an opposite direction against the sun gear
Implementation Method 2
a reversing means, via which the first ring gear and the sun gear drive the main shaft; when in use, the planet carrier is kept still, and the main shaft rotates in a preset direction no matter a clockwise or anticlockwise torque is applied to the first ring gear
Data Source
AI summary
A speed increasing bidirectional mechanical converter, including a main shaft and a speed increasing planet gear unit is disclosed. The speed increasing planet gear unit includes a first ring gear, a planet gear, a sun gear and a planet carrier, wherein the planet gear is mounted on the planet carrier. The planet gear is arranged between the first ring gear and the sun gear, and rotates in an opposite direction against the sun gear. The speed increasing bidirectional mechanical converter further includes a reversing means, via which the first ring gear and the sun gear drive the main shaft. When in use, the planet carrier is kept still, and the main shaft rotates in the preset direction. The speed increasing bidirectional mechanical converter realizes the direction reverse by using the speed increasing planet gear unit, which simplifies the structure, facilitates the manufacture and decreases the space it occupies and its weight. A screwdriver and a wrench having the speed increasing bidirectional mechanical converter are provided.