Adjustable Lamp Post Using Interference Fit Plug and Jack
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Solution Overview
Problem
Conventional lamps have fixed-length lamp posts, which cannot be adjusted, making it difficult to extend or narrow the illumination area according to specific needs, and require random cutting to accommodate different lighting occasions, leading to inefficiencies in mass assembly.
Innovation Solution
An upright lamp design featuring a length-adjustable lamp post with a through hole and a connector system that includes a plug, clamping sleeve, clamp nut, gasket, and annular rings, allowing for interference fit joints and easy assembly, enabling the lamp post to be cut to varying lengths while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lamp post length is fixed, then the manufacturing and assembly process is simplified, but the adaptability to different lighting requirements deteriorates
Solution Approach 1:
The lamp post is divided into multiple segments that can be connected through the jack and plug mechanism. Each segment can be independently manufactured and then assembled to achieve different total lengths, thereby providing adaptability to different lighting requirements while maintaining standardized manufacturing processes.
Solution Approach 2:
The lamp post structure transitions from a fixed static design to a dynamic adjustable configuration. The jack and plug connection system allows the lamp post length to be modified after assembly, enabling the structure to adapt to varying lighting needs without requiring complete redesign or custom manufacturing for each application.
2Adaptability or versatility
If the lamp post length is adjusted by cutting, then the adaptability to different lighting occasions is improved, but the manufacturing efficiency and assembly speed deteriorate
Solution Approach 1:
The lamp post is designed with pre-formed jack connections at regular intervals along its length. These connection points are prepared in advance during manufacturing, allowing for quick assembly adjustments without requiring on-site cutting or complex modifications. The plug components are also pre-manufactured to match the jack interfaces.
Solution Approach 2:
By segmenting the lamp post into standardized sections with integrated jack connections, the design allows for rapid assembly and disassembly. Pre-fabricated segments can be quickly connected using plugs, eliminating the time-consuming process of cutting and fitting custom lengths during installation.
3Ease of operation
If the lamp post length is fixed, then the mass assembly process is simplified, but the flexibility in illumination coverage deteriorates
Solution Approach 1:
The jack and plug connection system serves multiple functions: it provides structural connection between lamp post segments, enables length adjustment, and allows for easy disassembly and reconfiguration. This universal mechanism simplifies the overall assembly process while simultaneously providing the flexibility needed for different illumination coverage requirements.
Data Source
AI summary
An upright lamp having length adjustable lamp-post includes a lamp-post, a plug mounted on the lamp-post, and a fastener configured for connecting the lamp-post and the plug. The lamp-post has a jack opened therein. The plug is inserted into the jack. The plug has a uniform cross section area and cross section shape with that of the jack. A hole is opened in the plug along axial direction thereof and is configured for receiving the fastener. The hole is intersected with a side wall of the plug. When the fastener is threaded into the volume formed by the plug and the lamp-post, the interference fit joint between the fastener and the volume is realized as the volume is less than that of the fastener. And then, the mounting base module and the fastener are assembled onto the lamp-post.