Jigsaw Handle Switch Layout for Grip-Stable Operation
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Solution Overview
Problem
Existing power tools, such as jigsaws, often lack ergonomic design features that enhance user comfort and safety during extended use, particularly in terms of switch accessibility and heat dissipation.
Innovation Solution
The power tool incorporates a dual activation switch system located on opposite sides of the housing, allowing for easy access without altering the user's grip, and utilizes non-conductive materials for the housing, handle, and frame to prevent electrical shock and maintain a moderate temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the activation switch is positioned on the housing, then the switch is accessible to the user, but the user must alter their grip to reach the switch
Solution Approach 1:
The activation switch is segmented into multiple switches positioned at different locations on the housing. This allows different users or the same user in different positions to access different switches without altering their grip, effectively dividing the single switch function into multiple accessible points
Solution Approach 2:
The activation switches are arranged in multiple dimensions on the housing surface rather than a single location. By distributing switches across different sides and heights of the housing, the design enables access from various angles and hand positions without requiring grip adjustment
2Ease of manufacture
If conventional materials are used for the housing, then manufacturing is simpler, but electrical shock and heat-related discomfort may occur
Solution Approach 1:
The housing is constructed from composite materials that combine non-conductive properties with thermal management characteristics. This allows the housing to prevent electrical shock while also maintaining moderate temperatures during extended use, addressing both safety concerns without significantly complicating manufacturing
Solution Approach 2:
The material properties of the housing are changed to achieve non-conductive characteristics and improved thermal performance. By selecting materials with appropriate electrical resistivity and thermal conductivity parameters, the housing prevents electrical shock and reduces heat-related discomfort while remaining manufacturable
3Device complexity
If a single activation switch is used, then the device structure is simpler, but the user must alter grip to access the switch from different positions
Solution Approach 1:
The single activation switch is segmented into multiple switches positioned at different locations on the housing. This segmentation allows users to access the activation function from various hand positions and angles without altering their grip, with each segmented switch serving a specific access position
Solution Approach 2:
Multiple activation switches provide universal access from different positions and orientations. Each switch performs the same activation function but is positioned to be accessible from different user positions, making the system universally accessible regardless of how the user holds or approaches the tool
Data Source
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AI summary
A power tool includes a housing having a base configured to support the power tool relative to a workpiece. The power tool includes a handle coupled to the housing. The handle defines a longitudinal axis and includes a first portion positioned between the longitudinal axis and the base and a second portion opposite the first portion along the longitudinal axis. The power tool includes an activation switch coupled to a side surface of the housing. The activation switch is slidable in a direction parallel with a switch axis that intersects the longitudinal axis from a deactivated state, in which the drive system is non-operable, to an activated state, in which the drive system is operable. The activation switch is slidable toward the second portion of the handle from an intersection point between the switch axis and the longitudinal axis.