Pump Head Mounting with a Rotatable Multi-Pitch Nut Plate
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Solution Overview
Problem
Existing pump devices require disassembly and replacement of brackets to accommodate pump heads with different mounting screw pitches, leading to inefficiencies and potential interference issues.
Innovation Solution
A pump device design featuring a rotatable nut plate with multiple sets of nut holes at varying distances from the center, allowing easy attachment and detachment of pump heads with different mounting pitches without disassembling the entire pump, using a bracket that can be exchanged for each pitch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the bracket is replaced to accommodate pump heads with different mounting pitches, then the pump head can be attached to the pump body, but the whole pump must be disassembled and the replacement process becomes complex
Solution Approach 1:
The nut plate is designed to be rotatable relative to the pump body, allowing dynamic adjustment of the nut hole pitch configuration. This enables the same bracket to adapt to different pump head mounting pitches by rotating the nut plate to the appropriate angular position, eliminating the need for complete disassembly and bracket replacement.
Solution Approach 2:
The bracket is designed with a universal mounting structure that can accommodate multiple pump head types with different mounting pitches. By integrating a rotatable nut plate with multiple pitch configurations, the single bracket serves multiple functions and can be used with various pump heads without requiring different bracket types.
2Adaptability or versatility
If multiple sets of nuts with different pitches are inserted into the bracket, then the bracket can accommodate multiple pump head types, but interference between nuts occurs and strength and water resistance are reduced
Solution Approach 1:
Instead of inserting multiple nut sets into the bracket, the nut plate is segmented into multiple sets of nut holes arranged at different pitches. The nut plate itself rotates to select the appropriate pitch configuration, separating the nut holding function from the pitch selection function and avoiding interference between nuts.
Solution Approach 2:
The rotatable nut plate acts as an intermediary mechanism between the bracket and the pump head mounting holes. It mediates the connection by providing a selectable interface with different pitch configurations, allowing the bracket to maintain its structural integrity while accommodating various pump head types.
Data Source
AI summary
A pump head, which has a different mounting pitch of mounting screws, and a bracket are enabled to be easily attached and detached to and from a pump body without disassembling a whole pump. A pump device includes: a drive source; a pump body that has a first wall and a housing space on one side of the first wall, the housing space housing the drive source inside; a pump head that has a pump chamber, a suction port, and a discharge port, and is attached to another side of the first wall, the suction port and the discharge port being for transfer fluid and communicating with the pump chamber; a bracket that is arranged between the pump head and the first wall; a drive member that is driven in the pump chamber by the drive source; and a nut plate that has an annular shape and is arranged adjacent to the first wall in the housing space of the pump body.