Air Compressor Motor Locking Structure for Screwless Fixation
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Solution Overview
Problem
Conventional air compressors face difficulties in securely fixing and easily removing the motor due to the limited space and complexity of screwing screws into multiple threaded orifices, making it challenging to maintain and service the device.
Innovation Solution
The air compressor incorporates multiple coupling orifices on the motor and posts on the body, along with locking extensions that engage without screws, allowing for secure fixation and easy removal using a removal tool, which presses the locking extensions away from the body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screws are used to fix the motor on the body through multiple threaded orifices, then the motor can be securely fixed, but the operation becomes complex and difficult in limited space
Solution Approach 1:
The patent removes the screws and threaded orifices from the motor fixation system, extracting the fastening function to a different mechanism. The locking extensions with flexible wings engage directly with the body through coupling orifices, eliminating the need for screw fastening operations in the limited space around the motor.
Solution Approach 2:
The patent replaces the screw-thread mechanical fastening system with a direct engagement system using locking extensions. The flexible wings of the locking extensions deform elastically to engage with the body, substituting the complex screw-thread mechanism with a simpler elastic engagement mechanism that is easier to operate in limited space.
2Reliability
If multiple threaded orifices are used on the motor casing, then the motor can be fixed securely, but the device complexity increases
Solution Approach 1:
The patent divides the motor casing into multiple segments with coupling orifices, and the locking extensions are segmented with flexible wings that can independently engage with the body. This segmentation allows the fixation function to be distributed across multiple simple engagement points rather than requiring complex threaded orifices.
Solution Approach 2:
The patent changes the physical state of the locking extension wings from rigid to flexible, allowing them to deform elastically during engagement. This parameter change enables the wings to adapt to the coupling orifices and engage securely without requiring precise threading, thereby reducing structural complexity while maintaining fixation reliability.
3Reliability
If screws are used for motor fixation, then the motor can be attached to the body, but the removal process becomes time-consuming and difficult
Solution Approach 1:
The locking extensions with flexible wings are designed to be self-engaging and self-releasing. The flexible wings automatically deform to engage with the body during motor attachment, and can be easily released by applying force to the extensions, eliminating the need for screwdrivers or other removal tools. This self-service mechanism significantly reduces removal time and complexity.
4Reliability
If the motor is fixed using conventional screw methods, then the motor can be secured, but the ease of repair deteriorates due to difficult access in limited space
Solution Approach 1:
The patent extracts the fastening function from the motor casing area by using locking extensions that engage with the body externally. This removes the need for threaded orifices in the motor casing, making the motor more accessible for repair while maintaining secure fixation through the locking extensions that can be operated from outside the motor housing.
Data Source
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AI summary
An air compressor (10) is received in an accommodation box (8) and contains a body (1), a cylinder (2), a motor (4), and a transmission mechanism (6). The body (10) includes 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) is accommodated in the first orifice (11). The transmission mechanism (6) actuates a piston (5) to move in the cylinder (2) reciprocately so as to produce compressed airs. The motor (4) includes at least one locking extension (46) for engaging the motor (4) with the body (1). A first end of a respective one locking extension (46) extends from the motor (4), and a second end of the respective one locking extension (46) is engaged on the body (1), hence the motor (4) is fixed on the body (1) securely without using any screws.