Detachable Puller Claw Assembly for Secure Non-Slip Gripping
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Solution Overview
Problem
Conventional pullers have claws that cannot be detached or assembled, leading to inconvenience when worn out or damaged, and lack secure object gripping, causing slippage, with high material usage and manufacturing costs.
Innovation Solution
A puller design with detachable claws and a main body featuring engaging slots and elastic detents, allowing easy assembly and disassembly, and a concave-convex structure for secure engagement, along with a bolt and insert for versatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If claws are made non-detachable in conventional pullers, then structural simplicity is maintained, but repairability and adaptability deteriorate when claws are worn out or damaged
Solution Approach 1:
The puller is divided into separable components: the main body and multiple detachable claws. Each claw can be independently removed and replaced through the engaging portions and elastic detent mechanism, allowing repair without replacing the entire device.
Solution Approach 2:
The claw assembly transitions from a fixed static connection to a dynamic detachable connection. The elastic detent portion allows claws to be easily attached and detached, providing flexibility for maintenance and adaptation while maintaining structural integrity during use.
2Reliability
If conventional claw structures are used, then manufacturing simplicity is maintained, but gripping reliability deteriorates causing slippage
Solution Approach 1:
The engaging structure employs asymmetric design with engaging slots and elastic detent portions that create a secure one-way engagement. The concave-convex structure between claws and main body ensures reliable positioning and prevents slippage during pulling operations.
Solution Approach 2:
The elastic detent portion automatically engages with the爪's positioning features when assembled, providing self-locking functionality. The structure maintains secure gripping force during operation without requiring additional fastening mechanisms.
3Adaptability or versatility
If conventional non-detachable claws are used, then device simplicity is maintained, but adaptability deteriorates for different objects
Solution Approach 1:
The puller is divided into separable components: the main body and multiple detachable claws. Each claw can be independently removed and replaced through the engaging portions and elastic detent mechanism, allowing repair without replacing the entire device.
Solution Approach 2:
The standardized engaging portions and concave-convex structures allow different types and configurations of claws to be interchangeably mounted on the same main body, enabling the device to adapt to various pulling applications and object types.
4Ease of manufacture
If material usage is increased in conventional pullers, then structural strength is maintained, but manufacturing cost increases
Solution Approach 1:
The puller is divided into separable components: the main body and multiple detachable claws. Each claw can be independently removed and replaced through the engaging portions and elastic detent mechanism, allowing repair without replacing the entire device.
Solution Approach 2:
The design optimizes material distribution by concentrating material in critical load-bearing areas such as the engaging portions and concave-convex structures, while reducing material in non-critical areas. This maintains structural integrity where needed while minimizing overall material usage.
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
Enables convenient assembly and disassembly of claws, enhances secure gripping, and reduces material usage while maintaining structural integrity and functionality.
Implementation Method 1
an elastic detent portion including an engaging structure; one end of the positioning section including a concave-convex structure arranged around the shaft portion, the concave-convex structure being releasably restricted by the engaging structure
Implementation Method 2
A threaded shaft is screwed to the base, and the end of the threaded shaft includes a pressing member. In operation, the threaded shaft is rotated to move the plurality of claws
Data Source
AI summary
A puller is provided, wherein the puller includes: a main body including engaging portions and a threaded hole, each engaging portions including an engaging slot which is laterally open and includes an elastic detent portion including an engaging structure; a bolt screwed to the threaded hole; and claws each detachably assembled to one of the engaging portions, each claw including a shaft portion rotatably engaged in the engaging slot and a positioning section, the positioning section including a concave-convex structure arranged around the shaft portion and being releasably restricted by the engaging structure, wherein when a central vertical line of the positioning section is parallel to the bolt, the central vertical line divides the concave-convex structure into first and second section, and radian angles of the first and second sections extending around the shaft portion are different relative to the center of the shaft portion.