Air Compressor Motor Retainer Fixing for Screwless 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, as screws are hard to insert through multiple threaded orifices, leading to easy removal and installation challenges.
Innovation Solution
A fixing device that utilizes multiple cavities on the motor to engage with posts on the body and a retainer system, where one end of the retainer is engaged with the body and the other with the motor casing, securely fixing the motor without screws, and a trench in the accommodation box prevents 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 securely fixed, but it becomes difficult to screw the screws with multiple threaded orifices in a limited space
Solution Approach 1:
The patent removes screws and threaded orifices from the motor fixing structure, extracting the fastening function to a separate retainer component that engages with posts on the body and cavities on the motor, simplifying the installation process while maintaining secure fixation
Solution Approach 2:
The patent introduces a retainer as an intermediary component that mediates between the motor and the body, providing a simple engagement mechanism that avoids the complexity of multiple screws and threaded orifices in limited space
2Reliability
If screws are used to fix the motor on the body, then the motor can be securely fixed, but the motor is easy to remove after a period of using time
Solution Approach 1:
The patent incorporates a retainer that is pre-configured to engage with the posts and cavities, establishing a secure connection before use that prevents easy removal over time, rather than relying on screws that may loosen or be accidentally removed
3Ease of operation
If a retainer system is used to fix the motor without screws, then the installation is simplified, but the retainer may be removed from the air compressor
Solution Approach 1:
The patent adds a dimensional constraint by incorporating a trench in the accommodation box that limits the retainer's movement in a specific direction, preventing removal while maintaining the simple engagement mechanism
Data Source
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AI summary
A fixing device of a motor (4) of an air compressor (10) contains: a body (1), a cylinder (2), a motor (4), a transmission mechanism (6), and at least one retainer (7). The body (1) includes a first positioning orifice (11) and a second positioning orifice (12). The cylinder (2) is connected on the body (1). The motor (4) is fixed on the body (1), a small gear (61) is received in the first positioning orifice (11) and is connected on the motor (4), and a connection seat (41) of the motor (4) is accommodated in the first orifice (11). The transmission mechanism (6) actuates a piston (5) to move in the cylinder (2) reciprocately. The at least one retainer (7) is configured to fix the body (1) and the motor (4). A first end of at least one retainer (7) is engaged on the body (1), and a second end of the at least one retainer (7) is engaged on the motor (4) so that the motor (4) is fixed on the body (1) without using any screws.