Spring-Coupled Pressing Mechanism for Variable Object Position
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Solution Overview
Problem
Existing pressing apparatuses fail to maintain a pressed state when the position of the press object fluctuates in the first direction with respect to the base member, as the distance between the base and pressing members is fixed.
Innovation Solution
A pressing apparatus with a link mechanism and a driving device that includes a driving shaft, threaded portions, and a spring member, allowing the pressing members to move in the first direction and maintain contact with the press object even when its position changes, through a coupling mechanism that applies elastic force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the distance between the base member and pressing member is fixed, then the pressing apparatus has a simple structure, but the pressed state cannot be maintained when the position of the press object fluctuates
Solution Approach 1:
The pressing member is made dynamically adjustable through a link mechanism with multiple pivots (fixed pivot, driven pivot, moving pivot) that allow the distance between the base member and pressing member to change. This enables the pressing member to follow the position fluctuations of the press object while maintaining the pressed state, resolving the contradiction between structural simplicity and reliability.
2Reliability
If the pressing member can adjust its position to follow the press object, then the pressed state is maintained reliably, but the device structure becomes more complex
Solution Approach 1:
The link mechanism introduces motion in a second direction (perpendicular to the pressing direction) to achieve position adjustment. The driven pivot moves along the second direction while the moving pivot follows in the first direction, creating a dimensional transformation that enables position following without direct linear adjustment in the pressing direction.
Solution Approach 2:
The link mechanism acts as an intermediary between the base member and pressing member, mediating the position fluctuations. Instead of directly adjusting the pressing member's position, the link mechanism with its multiple pivots translates base member movements into appropriate pressing member position changes, simplifying the control structure.
3Reliability
If a coupling mechanism with spring member is added to enable position adjustment, then the pressed state is maintained under position fluctuations, but the device complexity increases
Solution Approach 1:
The spring member in the coupling mechanism changes the elastic parameter of the system, allowing dynamic adjustment of the connection between the driven member and coupling member. This elastic parameter change enables the system to absorb position fluctuations while maintaining the pressed state, providing a simple yet effective solution to the reliability-complexity contradiction.
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 apparatus effectively maintains the pressed state by adjusting the position of the pressing members to follow the movement of the press object, ensuring consistent contact and minimizing slippage, even under varying conditions.
Implementation Method 1
a spring member having elasticity in the second direction and configured to apply elastic force between the driven member and the coupling member
Implementation Method 2
a first threaded portion provided for the driving shaft; and a driven member including a second threaded portion screwed with the first threaded portion and configured to move along the second direction in response to the rotation of the driving shaft
Data Source
AI summary
A pressing apparatus includes base members; pressing members configured to move in a first direction with respect to the base members; a link mechanism; a driving device; and a coupling mechanism, in which the link mechanism includes: fixed pivots having fixed positions with respect to the base members; driven pivots configured to be driven by the driving device and move along a second direction; and moving pivots having fixed positions with respect to the pressing members and configured to move in the first direction together with the movement of the driven pivots, the driving device includes a first threaded portion provided for the driving shaft; and a driven member including a second threaded portion, and the coupling mechanism includes: a coupling member having a fixed position with respect to the driven pivots; and a spring member configured to apply elastic force between the driven member and the coupling member.