Rotation Range-Limiting Device With Integrated Slider And Locking Portion
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Solution Overview
Problem
Conventional rotation range-limiting devices for rotation bodies, such as those carrying cameras and lighting equipment, tend to increase the overall apparatus size and part count, making them less efficient and more complex.
Innovation Solution
A rotation range-limiting device with a disc-shaped rotation body and a stationary body featuring an arc-shaped slide-guiding portion, end walls, and a locking portion, where a slider moves along the slide-guiding portion to abut against the locking portion and end walls, limiting the rotation range to 360 degrees to 720 degrees, thereby reducing the number of parts and apparatus size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional rotation range-limiting device with stationary blocks and L-shaped blocks is used, then the rotation range can be limited to 360-720 degrees, but the overall apparatus size increases and the number of parts increases
Solution Approach 1:
The patent combines multiple separate components (L-shaped block, stationary block, and limiting block) into a single integrated rotation range-limiting device. The housing contains both the slide-guiding portion and locking portion, while the slider integrates the limiting function that previously required separate blocks. This merging reduces the number of parts while maintaining the rotation limitation capability.
Solution Approach 2:
The rotation range-limiting device uses a nested structure where the slider moves within the housing along the slide-guiding portion, and the locking portion is positioned within the housing to engage with the slider. The L-shaped block is rotatably coupled to the rotation body and fits within the housing structure. This nesting arrangement compactly houses multiple functional elements in a space-efficient manner.
2Reliability
If a conventional rotation range-limiting device with stationary blocks disposed outside the rotation body is used, then the rotation range can be limited, but the overall apparatus size gets bigger
Solution Approach 1:
The patent merges the stationary block and L-shaped block functions into a single housing structure. The housing contains both the slide-guiding portion (replacing the stationary block) and the locking portion (replacing the L-shaped block's limiting function), eliminating the need for separate external blocks and reducing the overall apparatus footprint.
Solution Approach 2:
The patent transitions from a two-dimensional arrangement with separate blocks positioned outside the rotation body to a three-dimensional integrated housing structure. The slide-guiding portion and locking portion are positioned in different spatial dimensions within the housing, allowing compact arrangement that reduces the apparatus's external dimensions while maintaining the rotation limitation function.
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 solution effectively controls the rotation range within a predetermined 360 degrees to 720 degrees, reduces the number of parts needed, and simplifies the manufacturing process while allowing the apparatus to be easily oriented in various directions for camera or lighting applications.
Implementation Method 1
a slider movable along the slide-guiding portion. The other of the first surface and the second surface is provided with a locking portion, which projects toward the slide-guiding portion at a location on a circle having the same diameter as the slide-guiding portion such that it can abut against the slider.
Data Source
AI summary
A rotation range-limiting device 10 is provided with a rotation body 20 provided with a first surface and a carrying surface, and a stationary body 30 supporting the rotation body such that the rotation body is rotatable about a center point thereof. The stationary body has a second surface opposed to the first surface. One 212 of the first surface and the second surface is provided with an arc-shaped slide-guiding portion 24 whose center corresponds to the center point of the rotation body, and a slider 26 movable along the slide-guiding portion. The other 301 of the first surface and the second surface is provided with a locking portion 36, which projects toward the slide-guiding portion at a location on a circle having the same diameter as the slide-guiding portion such that it can abut against the slider.