Power Tool Handle Vibration Isolation via Dynamic Guide
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Solution Overview
Problem
Power tools with a hammer mechanism and cantilever-type grip parts experience significant vibration transmission, which is not effectively mitigated by existing vibration-isolating housings.
Innovation Solution
The power tool incorporates a handle connected to the tool body with a biasing member and guide parts that allow the handle to move relative to the tool body in the front-rear direction, absorbing vibrations and reducing their transmission through a combination of elastic members and pivotable connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cantilever-type grip part is used in a power tool with a hammer mechanism, then the ease of operation is improved, but the vibration transmission to the handle increases
Solution Approach 1:
The guide part enables dynamic relative movement between the handle and tool body in the front-rear direction, allowing the handle to move independently to absorb vibration while maintaining the cantilever grip structure for ease of operation
Solution Approach 2:
The guide part acts as an intermediary mechanism between the handle and tool body, facilitating controlled relative movement that reduces vibration transmission while preserving the operational advantages of the cantilever grip part
2Stability of the object's composition
If the handle is rigidly connected to the tool body, then the structural stability is improved, but the vibration transmission to the handle increases
Solution Approach 1:
The connection between handle and tool body is changed from rigid to dynamic, allowing controlled relative movement in the front-rear direction that absorbs vibration while maintaining structural integrity and stability during operation
3Object-affected harmful factors
If a vibration-isolating housing is added, then the vibration transmission is reduced, but the device complexity increases
Solution Approach 1:
The vibration isolation function is segmented into the guide part mechanism that allows relative movement between handle and tool body, rather than requiring a separate complex vibration-isolating housing structure
Solution Approach 2:
The guide part serves multiple functions: it enables relative movement for vibration isolation, maintains structural connection between handle and tool body, and allows pivotal movement, eliminating the need for separate vibration-isolating housing components
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
This configuration effectively reduces vibration transmission in both the front-rear and pivotal directions, enhancing user comfort and tool stability during operation.
Implementation Method 1
The at least one biasing member is disposed (interposed) between the tool body and the handle. The at least one biasing member is configured to bias the tool body and the handle away from each other in the front-rear direction.
Data Source
AI summary
A power tool includes a tool body, a motor, a handle, at least one biasing member, and at least one guide part. The handle is connected to the tool body to be pivotable and to be movable in at least a front-rear direction relative to the tool body. The handle includes a cover part covering a portion of the tool body and a grip part extending in a cantilever manner from the cover part. The at least one biasing member biases the tool body and the handle away from each other in the front-rear direction. The at least one guide part includes a first portion disposed on a portion of the tool body covered by the cover part, and a second portion disposed on the cover part of the handle and connected to the first portion to be movable in at least the front-rear direction relative to the first portion.