Air Compressor Motor Positioning via Snap-Fit Retainers
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Solution Overview
Problem
Conventional air compressor motor fixation using screws is unreliable over time and limited by spatial constraints, preventing secure attachment in compact designs.
Innovation Solution
A positioning structure that engages multiple through orifices of the motor with corresponding posts on the base, utilizing symmetrical arcuate retainers and hooks to securely fix the motor without screws, with a magnetic coil enhancing attachment stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple screws are used to fix the motor on the base, then the motor can be securely attached, but the screws are removed easily after a period of using time
Solution Approach 1:
The patent replaces the screw-based mechanical fastening system with a snap-fit positioning structure. The motor housing includes positioning protrusions that engage with corresponding positioning grooves on the base, eliminating the need for screws. This substitution maintains secure attachment while preventing easy removal, as the snap-fit design requires significant force to disengage.
Solution Approach 2:
The patent introduces a vertical engagement dimension to the attachment system. The positioning protrusions extend vertically from the motor housing to engage with grooves on the base surface, creating a multi-dimensional constraint that prevents both accidental detachment and easy removal, while allowing for tool-free installation from above.
2Reliability
If multiple screws are used to fix the motor on the base, then the motor can be securely attached, but the attachment method is limited by spatial constraints in compact designs
Solution Approach 1:
The patent extracts the fastening function from the screw heads and threads, concentrating it into integrated positioning protrusions that are part of the motor housing structure. This eliminates the need for separate screw components and the space they occupy, allowing secure attachment in compact designs where screw clearance is unavailable.
Solution Approach 2:
The patent merges the attachment function into the motor housing structure itself. The positioning protrusions are integrally formed with the housing, combining the motor mounting features with the housing structure, thereby eliminating additional attachment components and reducing overall space requirements.
3Productivity
If the cylinder length is too long, then the air compressor has sufficient compression capacity, but the motor cannot be fixed on the base due to limited space
Solution Approach 1:
The patent transitions from a two-dimensional surface attachment (screws on base surface) to a three-dimensional engagement system where positioning protrusions extend vertically to engage with grooves. This vertical dimension allows secure motor attachment even when horizontal space is constrained by a long cylinder configuration.
Data Source
AI summary
A positioning structure of a motor of an air compressor contains: a base, a cylinder, the motor, and a transmission mechanism. The base includes a first locating orifice and a second locating orifice. The cylinder includes an air storage seat. A small-diameter gear is fitted on the motor via the first locating orifice. A bearing housing of the motor is accommodated in the first locating orifice. The transmission mechanism actuates a piston to move in the cylinder reciprocately. The base includes two symmetrical elongated plates having two hooks respectively and includes two symmetrical arcuate retainers. An outer wall of the motor is retained by the two symmetrical arcuate retainers, and the two hooks are engaged with the magnetic coil.