Woodworking Corner Clamp With Eccentric Detent Locking
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Solution Overview
Problem
Conventional corner clamps for woodworking lack a mechanism to prevent the connected ends of boards from deviating or shifting due to excessive external forces, as they rely solely on the rebound force of a compression spring without locking functions.
Innovation Solution
A corner clamp design featuring a clamp body with anti-slip surfaces, a slider mechanism, detents, and an eccentric pull member that ensures secure clamping by engaging anti-slip portions and utilizing slider springs to maintain stability, preventing sliding and enhancing the clamping force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional corner clamp uses only compression spring rebound force for clamping, then the structure is simple, but the clamping force is insufficient under external impact forces
Solution Approach 1:
The patent transforms the static spring-based clamping system into a dynamic locking system. The slider can move along the guide hole to adjust clamping position, while the detent mechanism provides automatic locking when external force is applied. This dynamic capability allows the clamp to maintain strong clamping force under impact without requiring excessive initial spring force.
Solution Approach 2:
The clamping function is divided into two independent mechanisms: the compression spring provides continuous clamping force, while the detent mechanism provides intermittent locking at specific positions. This segmentation allows each mechanism to be optimized independently - the spring for force generation and the detent for position stabilization under load.
2Reliability
If conventional corner clamp has no locking function, then the device is simple to operate, but the connected boards deviate or shift under excessive external force
Solution Approach 1:
The detent mechanism is designed to automatically engage and lock the slider in position when external force is applied to the clamped boards. The system self-regulates - under normal conditions the spring maintains clamping force, but when impact occurs the detent automatically activates to prevent position deviation, without requiring user intervention or complex control systems.
Solution Approach 2:
The detent mechanism is pre-positioned to engage with the slider at critical moments. Before external impact occurs, the detent is ready in a poised state, and when force is applied, it immediately locks the slider to prevent deviation. This preliminary preparation ensures reliability without adding operational complexity.
3Stability of the object's composition
If the chuck has no retreat restriction, then the operation is simple, but the clamping position cannot be maintained under external force
Solution Approach 1:
The slider is designed with controlled mobility - it can move freely along the guide hole during normal operation to accommodate board thickness variations, but the detent mechanism provides automatic position locking when external force is applied. This dynamic behavior maintains both operational ease and position stability without requiring complex control mechanisms.
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 design effectively prevents loosening of the clamped boards by ensuring secure engagement and stability, even under external forces, through the combination of anti-slip surfaces and the slider mechanism, enhancing the overall clamping effectiveness.
Implementation Method 1
the rebound force released by the compression of the slider spring
Implementation Method 2
The non-slip effect generated by the locking surface of the bottom of the detent body to be in tight contact with the non-slip surface restricts the slider from sliding on the slide surface
Data Source
AI summary
A corner clamp for woodworking includes a clamp body having a carrying seat, the carrying seat having a slide surface with an elongate guide hole and an anti-slip portion; a slider, having a frame-shaped base that includes a guide block, a press portion, an accommodating room and at least one receiving portion having a through hole; a chuck; at least one detent, having a detent body movable in the through hole; and an eccentric pull member, having a first eccentric portion relative to the detent. When the chuck clamps two boards, the eccentric pull member is pulled toward the chuck so that the first eccentric portion presses the detent to be in tight contact with the stop-slip portion to prevent the boards from loosening when the boards are clamped.