Coaxial Locking Knob and Positioning Pin for Compact Sleeve Locking
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Solution Overview
Problem
Existing locking and positioning mechanisms for sliding members on vertical supports occupy significant space and affect the layout of other structures, while lacking the ability to adjust tightness, leading to wobbling issues.
Innovation Solution
A compact locking and positioning mechanism using a locking knob and positioning pin with an elastic member, integrated within a support sleeve, allowing for secure positioning and locking without excessive space occupation, facilitated by a protective pad and plane bearing to reduce wear and rotational force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate positioning and locking structures are arranged on the sliding member, then positioning and locking functions are achieved, but space occupation increases and layout is affected
Solution Approach 1:
The patent combines the positioning pin and locking knob into a single integrated assembly. The positioning pin is arranged coaxially through the locking knob, allowing both positioning and locking functions to be achieved through one component rather than separate structures, thereby reducing space occupation on the sliding member.
Solution Approach 2:
The positioning pin is nested within the locking knob structure. The positioning pin passes through the center of the locking knob coaxially, with the elastic member positioned between them. This nested arrangement allows both components to occupy the same spatial envelope, minimizing the overall space required while maintaining both positioning and locking functions.
2Reliability
If locking structure is added to the sliding member, then locking function is achieved, but space occupation increases significantly
Solution Approach 1:
The locking knob integrates both locking and positioning functions into a single component. By making the positioning pin pass through the locking knob coaxially, the design eliminates the need for separate locking and positioning mechanisms, significantly reducing space occupation while maintaining reliable locking function.
3Device complexity
If tightness adjustment is not provided, then structure remains simple, but sliding member wobbles
Solution Approach 1:
The threaded connection between the locking knob and support sleeve allows for parameter adjustment. By rotating the locking knob, the user can adjust the tightness of the connection between the sliding member and vertical support, eliminating wobble while maintaining relatively simple structure. The thread pitch and engagement depth can be modified to achieve optimal tightness.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The mechanism enables secure positioning and locking of support sleeves with minimal space usage, enhancing user convenience and reducing wear on the stand column, while allowing for easy adjustments and reduced friction.
Implementation Method 1
an elastic member is provided between the positioning pin and the locking knob, and when the positioning pin extends inward under an action of the elastic member
Implementation Method 2
the locking knob is in a threaded connection with a side wall of a support sleeve, and the support sleeve sleeves a stand column; the locking knob can be screwed in and out relative to the support sleeve, and when the locking knob is screwed inward, an inner end of the locking knob presses tightly against the stand column for locking
Data Source
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AI summary
The present disclosure relates to a locking and positioning mechanism and a rotational folding positioning apparatus. The locking and positioning mechanism includes a locking knob (1) and a positioning pin (2). The locking knob (1) is in a threaded connection with a side wall of a support sleeve (3), and the support sleeve (3) sleeves a stand column (8); the locking knob (1) can be screwed in and out relative to the support sleeve (3), and when the locking knob (1) is screwed inward, an inner end of the locking knob (1) presses tightly against the stand column (8) for locking. The positioning pin (2) is coaxially arranged through the locking knob (1), and the positioning pin (2) can extend inward and outward relative to the locking knob (1); an elastic member (22) is provided between the positioning pin (2) and the locking knob (1). The mechanism is compact in structure, occupies minimal space, and is convenient and effortless to operate.