Air Compressor Motor Mounting With Screwless Retainer Locking
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Solution Overview
Problem
Conventional air compressor motors are difficult to fix securely on the body due to the challenges of using screws in limited spaces, leading to easy removal over time.
Innovation Solution
A fixing device with multiple cavities on the motor engaging with posts on the body and at least one retainer that secures the motor without screws, with one end engaged with the body and the other with the motor casing, and a trench in the accommodation box to prevent retainer removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screws are used to fix the motor on the body, then the motor can be initially secured, but the motor becomes easy to remove after a period of use and difficult to fix in limited space
Solution Approach 1:
The fixing mechanism is segmented into multiple components: posts extending from the body, cavities formed in the motor casing to receive the posts, and retainers that engage with both the posts and the motor. This segmentation allows each component to perform its specific function independently, enabling secure fixation while maintaining ease of assembly and disassembly in limited spaces.
Solution Approach 2:
The retainer acts as an intermediary element between the posts and the motor casing. It engages with the posts at one end and with the motor casing at the other end, providing a reliable connection that prevents motor removal while being easily installable and removable by hand without requiring tools.
2Reliability
If multiple threaded orifices are provided in the motor casing for screw fixation, then the motor can be attached to the body, but tools cannot easily screw the screws in the limited space
Solution Approach 1:
The complex screw and threaded orifice system is extracted and replaced with a simpler mechanism. The posts and cavities provide the attachment function without requiring threaded holes, and the retainers provide the securing function without requiring screwdrivers or tools, thereby reducing device complexity while maintaining reliable motor attachment.
3Volume of moving object
If the air compressor is received in an accommodation box, then the compressor is compactly housed, but the retainer may be accidentally removed
Solution Approach 1:
The accommodation box is designed with a retaining portion that preemptively prevents retainer removal. This preliminary anti-action measures against the potential harmful effect of accidental retainer removal by providing a physical barrier (trench or protrusion) that blocks the retainer from being pulled out, thereby maintaining fixation reliability within the compact accommodation box.
Data Source
AI summary
A fixing device of a motor of an air compressor contains: a body, a cylinder, a motor, a transmission mechanism, and at least one retainer. The body includes a first positioning orifice and a second positioning orifice. The cylinder is connected on the body. The motor is fixed on the body, a small gear is received in the first positioning orifice and is connected on the motor, and a connection seat of the motor is accommodated in the first orifice. The transmission mechanism actuates a piston to move in the cylinder reciprocately. The at least one retainer is configured to fix the body and the motor. A first end of at least one retainer is engaged on the body, and a second end of the at least one retainer is engaged on the motor so that the motor is fixed on the body without using any screws.