Parallel-Slide Sander Clamping Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sanders require users to exert force against a torsion spring to lock the clamp lever, leading to poor operability and increased size of the clamping mechanism in the up-down direction.
Innovation Solution
A sander with a clamping mechanism that includes a clamping part, an elastic element, and a holding mechanism. The clamping part slides parallel to the sheet placement surface between open and closed positions, with the elastic element providing a biasing force to hold the sanding sheet, and the holding mechanism, such as a cam part, allows the clamping part to be held in the open position against the biasing force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a torsion spring is used to bias the clamp lever, then the clamping force is sufficient to hold the sanding sheet, but the user must exert force against the biasing force to operate the clamp lever, resulting in poor operability
Solution Approach 1:
The invention inverts the conventional clamping mechanism by making the clamping part movable in a direction parallel to the sheet placement surface instead of using a lever that moves perpendicular to it. The holding mechanism holds the clamping part in the open position, and releasing it allows the elastic element to automatically drive the clamping part to the closed position, eliminating the need for users to exert force against a spring during operation.
2Ease of operation
If the clamping member is moved up and down by user operation, then the sanding sheet can be held and released, but the structure of the clamping mechanism in the up-down direction increases in size
Solution Approach 1:
The invention changes the operational dimension from vertical (up-down movement) to horizontal (parallel to sheet placement surface). The clamping part slides in a direction parallel to the sheet placement surface between open and closed positions, eliminating the need for vertical movement and reducing the up-down size of the clamping mechanism.
3Reliability
If the clamp lever is locked to a projecting locking part against the biasing force, then the sanding sheet is securely held, but the operation requires two-step process (lift and lock) reducing efficiency
Solution Approach 1:
The invention extracts the locking step from the clamping operation. The holding mechanism automatically holds the clamping part in the open position without requiring user intervention to lock or unlock positions. Users simply need to release the holding mechanism to automatically clamp the sanding sheet, reducing the operation to a single intuitive action while maintaining secure holding through the elastic element's biasing force.
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 allows for simple and efficient operation of the sander, as the sanding sheet can be held securely with minimal user effort, while also reducing the size increase of the clamping mechanism in both the left-right and up-down directions.
Implementation Method 1
The at least one elastic element applies a biasing force of biasing the clamping part toward the closed position, in a direction parallel to the sheet placement surface
Data Source
AI summary
The sander includes a sanding part having a planar sheet placement surface on which a sanding sheet can be set, and a clamping mechanism configured to hold the sanding sheet on the sanding part. The clamping mechanism includes a clamping part configured to hold the sanding sheet and to be slid in a direction parallel to the sheet placement surface between a closed position to hold the sanding sheet and an open position to allow removal of the sanding sheet, an elastic element that applies a biasing force of biasing the clamping part toward the closed position, in a direction parallel to the sheet placement surface, and a holding mechanism configured to hold the clamping part in the open position against the biasing force. The clamping part is allowed to hold the sanding sheet when the holding mechanism is released from holding the clamping part in the open position.