Reciprocating Tool Counterweight Support for Vibration Reduction
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Solution Overview
Problem
Existing reciprocating tools face constraints in design freedom due to the integration of the counterweight support structure with the housing member, leading to vibration issues during tool accessory operation.
Innovation Solution
The reciprocating tool features a counterweight supported by a separate support body, allowing it to be pivotable around an orthogonal pivot axis, which is housed within an inner structure, enhancing design freedom and reducing vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the counterweight is supported by the housing member (inner housing), then the counterweight can be positioned to reduce vibration, but the design freedom of the housing member is constrained
Solution Approach 1:
The support structure is divided into two separate components: the inner housing and the support body. The support body is attached to the inner housing and specifically designed to support the counterweight, while the inner housing maintains its primary functions. This segmentation allows the housing member to be optimized for its main purposes without being constrained by the counterweight support requirements, thereby resolving the contradiction between vibration reduction and design freedom.
2Device complexity
If the counterweight support structure is integrated with the housing member, then the structure is simplified, but the design freedom and adaptability of the housing member are reduced
Solution Approach 1:
The support structure is divided into two separate components: the inner housing and the support body. The support body is attached to the inner housing and specifically designed to support the counterweight, while the inner housing maintains its primary functions. This segmentation allows the housing member to be optimized for its main purposes without being constrained by the counterweight support requirements, thereby resolving the contradiction between vibration reduction and design freedom.
3Temperature
If the seal member is extended forward for improved cooling, then the cooling efficiency is enhanced, but the structural complexity increases
Solution Approach 1:
The support body serves multiple functions: it supports the counterweight, provides a mounting structure for the seal member, and contributes to the overall structural framework. By making the support body multi-functional, the patent achieves improved cooling through seal member extension without significantly increasing structural complexity, as the support body's additional functions are integrated into its existing design.
Data Source
AI summary
A reciprocating tool includes a motor, a motion converting mechanism, a body housing, an inner housing, a support body, and a counterweight. The motion converting mechanism is operably coupled to a motor shaft and is configured to convert rotation into a linear reciprocating motion along a driving axis. The inner housing is within the body housing and houses at least a portion of the motion converting mechanism. The support body is originally separate from the inner housing and is attached to the inner housing in the body housing. The counterweight is operably coupled to the motion converting mechanism and is configured to be driven by the motion converting mechanism. The counterweight is supported by the support body to be pivotable around a pivot axis that extends in a direction orthogonal to the driving axis. At least a portion of the counterweight is housed in the inner housing.