Power Tool Attachment Part Central Fixation Mechanism
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Solution Overview
Problem
Existing power tool attachment parts are bulky and difficult to disassemble, making them cumbersome for use in confined spaces and requiring excessive time for maintenance and component replacement due to the need for numerous fixation screws.
Innovation Solution
The attachment part features a sleeve member and fixation member that secure the upper and lower housing parts through central bores, eliminating the need for peripheral screws and allowing for reduced dimensions and easier access to internal components, facilitating quicker assembly, disassembly, and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple fixation screws are distributed around the periphery of the housing to secure upper and lower housing parts, then the structural strength and reliability are improved, but the device dimensions increase and the complexity of assembly and disassembly increases
Solution Approach 1:
The patent merges the functions of multiple peripheral fixation screws into a single central fixation member that passes through both housing parts along the longitudinal axis. This consolidation maintains the structural strength and reliability of securing the housing parts while significantly reducing the overall dimensions and simplifying the assembly/disassembly process.
Solution Approach 2:
The fixation member is designed as a segmented structure with a first portion engaging the upper housing part and a second portion engaging the lower housing part. This segmentation allows the single fixation member to perform the function of multiple screws while maintaining structural integrity and reducing complexity.
2Reliability
If multiple fixation screws are used to secure the housing parts, then the structural reliability is improved, but the time and operations required for service and maintenance increase
Solution Approach 1:
By combining multiple fixation operations into a single fixation member, the patent reduces the number of fastening and unfastening operations required during service and maintenance. This single member can be quickly removed and reinstalled, significantly reducing downtime while maintaining the necessary structural reliability.
Solution Approach 2:
The patent extracts the essential function of securing the housing parts from the multiple peripheral screws and concentrates it in a single central fixation member. This extraction simplifies the maintenance process by eliminating unnecessary fixation points while preserving the core structural connection.
3Power
If the first end of the housing has larger dimensions to accommodate the input interface and bearings, then the torque transmission capability is improved, but the overall device dimensions increase making it unsuitable for confined spaces
Solution Approach 1:
The patent nests the input interface and bearing structures within the longitudinal extension of the housing rather than expanding them radially. The input interface is positioned at the first end along the longitudinal axis, and bearings are arranged within the housing interior, allowing torque transmission components to be compactly integrated without increasing the radial dimensions that would prevent use in confined spaces.
Solution Approach 2:
The patent transitions from a radial expansion layout to a longitudinal arrangement, placing torque transmission components along the longitudinal axis of the housing. This dimensional reorganization allows the attachment part to maintain adequate torque capability while minimizing radial dimensions for use in confined spaces.
Data Source
AI summary
An attachment part for a power tool includes an elongated housing including an upper housing part, a lower housing part and an interconnection structure that interconnects the upper and lower housing parts. An input gear for connection to an output shaft of a power tool is arranged at a first end of the housing. An output gear with an output interface is arranged at a second end of the housing. The interconnecting structure includes a sleeve member extending through a first central bore at the first end of the upper housing part, which sleeve member receives the input gear, and a fixation member extending through a second central bore at the first end of the lower housing part and which is arranged to be secured to the sleeve member to clamp the upper and lower housing parts. A tool assembly includes a power tool and the attachment part.