Pen Vice Parallel Link Mechanism for Stable Clamping
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Solution Overview
Problem
Conventional pen vices have a complex structure leading to unstable guiding effects and high costs due to their wide width and complex design, necessitating an improvement for effective clamping of pen shanks during drilling.
Innovation Solution
A pen vice design featuring a base with mounted parallel link mechanisms, including upper and lower linkages, middle linkages with elongated grooves, and sliding jaws with locking members and guiders, which allows for stable clamping and adjustment of pen shanks using a compact and cost-effective structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional parallel link mechanisms are used with supporting plates, then the pen vice can clamp pen shanks, but the width becomes great and the guiding effect becomes unstable
Solution Approach 1:
The patent divides the parallel link mechanism into modular components: separate linkages (upper and lower), independent sliding jaws, and discrete locking members. Each component performs a specific function, allowing the mechanism to achieve stable guiding without requiring a wide supporting plate structure.
Solution Approach 2:
The patent transitions from a two-dimensional supporting plate structure to a three-dimensional linkage system where linkages connect vertically and horizontally. The sliding jaws move along guided paths defined by the linkages, achieving stable guiding through spatial arrangement rather than plate width.
2Ease of manufacture
If conventional complex structure is used, then the pen vice can be assembled, but the price becomes high due to complex supporting plate structure
Solution Approach 1:
The mechanism is segmented into standardizable components (linkages, sliding jaws, locking members) that can be manufactured independently and assembled systematically. This modular approach simplifies manufacturing processes and reduces overall complexity compared to a monolithic supporting plate structure.
Solution Approach 2:
The linkages serve multiple functions: they provide structural support, guide the motion of sliding jaws, and enable the parallel movement mechanism. This multi-functionality reduces the need for separate specialized components, simplifying the overall structure.
3Reliability
If conventional pen vice structure is used, then clamping can be performed, but the guiding effect is unstable due to wide width and complex design
Solution Approach 1:
The patent employs dynamic linkages that can adapt their configuration during operation. The linkages maintain parallel motion through their geometric design, providing stable guiding and clamping forces without requiring a rigid wide structure. The mechanism dynamically adjusts to maintain stability during the clamping process.
Data Source
AI summary
A pen vice includes a base, an operating device mounted onto the base and multiple studs vertically secured on the base, wherein the studs correspond to two opposite sides of the base. Two parallel link mechanisms respectively mounted onto the studs that correspond to the two opposite sides of the base. A first sliding jaw and a second sliding jaw is disposed between the two parallel link mechanisms. The two parallel link mechanisms drive the first sliding jaw and the second sliding jaw to clamp or release a pen shank.