Screwless Motor Mounting Structure for Air Compressor Assembly
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Solution Overview
Problem
Conventional air compressors face difficulties in securely fixing the motor to the body without using screws, especially in limited spaces, due to the complexity of engaging screws with multiple threaded orifices, leading to potential detachment over time.
Innovation Solution
The air compressor design incorporates multiple fixing portions with hooks extending from the motor's head edge that engage with corresponding through orifices on the body, eliminating the need for screws and ensuring secure fixation, while the accommodation box features columns that align with dissipation holes to prevent motor dislodgment during turnover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screws are used to fix the motor on the body, then the motor can be securely fixed, but the assembly becomes complex and difficult to operate in limited space
Solution Approach 1:
The invention extracts and eliminates the screws from the fixation system, replacing them with a screwless mechanism where the motor casing directly engages with the body through integrated fixing portions. This removes the complexity of screw assembly while maintaining secure fixation.
Solution Approach 2:
The fixing portions are merged directly into the motor casing structure, combining the motor housing with the fixation function. This integration eliminates separate fastening components and simplifies the assembly process while ensuring reliable motor attachment to the body.
2Reliability
If multiple threaded orifices are provided on the motor casing for screw fixation, then the motor can be securely attached, but the device complexity increases
Solution Approach 1:
The invention removes the threaded orifices and screws from the system, replacing them with smooth-bore through holes that receive elastic plugs. This extraction of fastening components significantly reduces device complexity while maintaining secure motor attachment.
Solution Approach 2:
The invention substitutes the mechanical screw-thread engagement system with an elastic plug insertion system. The elastic plugs provide secure fixation through friction and elastic deformation, replacing the complex threaded connection with a simpler press-fit mechanism.
3Reliability
If the motor is fixed with screws through the body, then secure attachment is achieved, but the operation becomes difficult in limited space
Solution Approach 1:
The invention extracts the screws and threaded orifices from the fixation system, replacing them with a simple plug insertion mechanism. This eliminates the need for screwdrivers and manual screw tightening operations, making assembly much easier in limited spaces.
Solution Approach 2:
The elastic plugs automatically secure the motor to the body through their elastic deformation when inserted into the through holes. This self-service mechanism requires no additional tightening operations or tools, allowing easy assembly in confined spaces.
Data Source
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AI summary
An air compressor (10) contains: a body (1), a cylinder (2), a motor (4), and a transmission mechanism (6). The body (1) includes multiple positioning orifices which are a first positioning orifice (11) and a second positioning orifice (12). The cylinder (2) is connected on the body (1) and communicates with an air storage holder (3). The motor (4) is fixed on the body (1), a small gear (61) is received in the first positioning orifice (11), and a connection seat (41) of the motor (4) is accommodated in the first orifice (11). The transmission mechanism (6) actuates the piston (5) to move in the cylinder (2) reciprocately so as to produce compressed airs. The motor (4) further includes multiple fixing portions (45) extending from a head edge (42) of the casing thereof and configured to engage with the body (1), thus fixing the motor (4) on the body (1) securely without using any screws.