Rotatable Working Head Power Tool for Straight and Angular Operations
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Solution Overview
Problem
Existing rotary hand-held power tools, such as screwdrivers and drill tools, often require both straight and angular profiles for different usage scenarios, necessitating the constant alternation between tools, limiting flexibility and compactness.
Innovation Solution
A power tool design featuring a working head that rotates relative to the main housing, allowing for a flexible angle adjustment between input and output axes, with a connection assembly providing orthogonal rotational degrees of freedom and a deformable transmission path to accommodate various working positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single power tool is designed to perform both straight and angular operations, then versatility is improved, but structural complexity increases
Solution Approach 1:
The working head is designed to be rotatable relative to the main housing about a first axis, allowing dynamic adjustment between straight and angular operation positions. This dynamic configuration enables the tool to adapt to different working conditions without requiring multiple separate tools, thereby improving versatility while managing structural complexity through controlled movement rather than multiple fixed configurations
Solution Approach 2:
The power tool is designed with a universal structure that can perform both straight and angular drilling operations through the rotatable working head mechanism. The connection assembly and deformable transmission path enable the single tool to fulfill multiple functional requirements, eliminating the need for separate straight and angular drill tools
2Ease of operation
If the working head rotates relative to the main housing, then flexibility is improved, but transmission path complexity increases
Solution Approach 1:
The transmission path incorporates a deformable structure that can flex and adapt to the rotational movement of the working head. This flexibility in the transmission path allows torque to be transmitted effectively while accommodating the angular changes, maintaining ease of operation without requiring an overly complex rigid transmission system
Solution Approach 2:
The connection assembly acts as an intermediary between the main housing and the working head, facilitating the rotational movement and torque transmission. This intermediate structure manages the complexity by providing a dedicated mechanism for handling the angular adjustments, isolating the complexity from both the main housing and the working head
3Adaptability or versatility
If components in the transmission path are allowed to deform or displace, then adaptability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The transmission path components are designed to deform and displace within controlled parameter ranges, allowing adaptability to different working positions. By defining specific deformation limits and displacement ranges, the design achieves adaptability while maintaining manufacturability through standardized tolerance specifications rather than requiring extreme precision
Data Source
AI summary
A power tool includes a main housing, a drive mechanism, a working head, and a connection assembly. The connection assembly includes an input portion connected to the drive mechanism and an output portion connected to an output shaft. The connection assembly rotates the working head about a first axis relative to the main housing. The power tool includes a first transmission path. When the working head rotates about the first axis relative to the main housing, components in the first transmission path are allowed to deform or to be displaced along a direction of the first transmission path.