Air Compressor Motor Mounting Without Screws
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Solution Overview
Problem
Conventional air compressor motors are difficult to fix securely on the base due to the ease of screw removal over time and limited space constraints, which prevents stable mounting.
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 fasten the motor, eliminating the need for screws.
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 mounted, but the screws are easily removed after a period of use
Solution Approach 1:
The patent replaces the screw-based mechanical fastening system with a snap-action mounting system. The motor housing includes protrusions that engage with corresponding recesses in the base, creating a secure mechanical connection without screws. This substitution eliminates the problem of screw loosening while maintaining mounting reliability.
Solution Approach 2:
The mounting structure is divided into separate engagement elements: protrusions on the motor housing and corresponding recesses in the base. These segmented features work together to create multiple discrete engagement points, distributing the mounting force and preventing single-point failure that would occur with traditional screw fastening.
2Reliability
If multiple screws are used to fix the motor on the base, then the motor can be securely mounted, but the mounting space becomes insufficient when the cylinder length is too long
Solution Approach 1:
The patent transitions from a two-dimensional screw hole pattern to a three-dimensional snap-action engagement system. The protrusions and recesses create engagement in multiple spatial dimensions, allowing secure mounting without requiring additional planar space on the base surface. This dimensional change enables effective use of limited mounting space.
Solution Approach 2:
The motor housing integrates multiple mounting functions into a single component structure. The protrusions serve both as positioning elements and as the primary fastening mechanism, merging the functions of alignment and secure attachment that would traditionally require separate screws and mounting features.
3Ease of manufacture
If a flange is used to fix the motor housing to the supporting structure, then the motor can be mounted, but the mounting complexity increases
Solution Approach 1:
The patent extracts the fastening function from a separate flange component and integrates it directly into the motor housing structure. The protrusions are formed as integral features of the motor housing, eliminating the need for a separate flange assembly and reducing overall mounting structure complexity.
Solution Approach 2:
The motor housing serves multiple functions: it encloses the motor components, provides structural support, and incorporates the mounting engagement features. This multi-functionality eliminates the need for separate flange components, simplifying the overall mounting structure while maintaining manufacturing ease.
Data Source
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AI summary
A positioning structure of a motor (7) of an air compressor (2) contains: a base (3), a cylinder (4), the motor (7), and a transmission mechanism (6). The base (3) includes a first locating orifice (31) and a second locating orifice (32). The cylinder (4) includes an air storage seat (41). A small-diameter gear (61) is fitted on the motor (7) via the first locating orifice (31). A bearing housing (71) of the motor (7) is accommodated in the first locating orifice (31). The transmission mechanism (6) actuates a piston (5) to move in the cylinder (4) reciprocately. The base (3) includes two symmetrical elongated plates (33) having two hooks (331) respectively and includes two symmetrical arcuate retainers (34). An outer wall of the motor (7) is retained by the two symmetrical arcuate retainers (34), and the two hooks (331) are engaged with the magnetic coil (72).