Pipe Wrench Ratchet Button for Stable Jaw Adjustment
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Solution Overview
Problem
Conventional pipe wrenches are inefficient and unsafe due to the need for axial pressing of a button to adjust jaw span, limited engagement of toothed members, and potential disengagement under force, leading to instability and danger during use.
Innovation Solution
A pipe wrench design with a button base and toothed member that allows axial and radial movement, ensuring stable engagement and quick jaw span adjustment through a ratchet mechanism, featuring a modular structure for wear replacement and enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the button is integrally formed with the second toothed portion, then the structure is simplified, but the button requires axial pressing to disengage teeth, reducing operational efficiency
Solution Approach 1:
The button is divided into a button base and a toothed member that can move relative to each other. The toothed member is separable from the button base, allowing independent movement. This segmentation enables the toothed member to radially disengage from the tooth row without requiring axial pressing of the entire button, significantly improving adjustment efficiency while maintaining structural simplicity.
2Manufacturing precision
If the pivot hole has a larger diameter to allow full engagement of the toothed member with the tooth row, then positioning accuracy is improved, but the clamp bodies can disengage and slide during use, creating safety hazards
Solution Approach 1:
The toothed member is designed to be movable relative to the button base in the radial direction. During normal use, the toothed member maintains full engagement with the tooth row for accurate positioning. When disengagement is needed, the toothed member can radially move away from the tooth row without requiring a large pivot hole clearance, thus maintaining both precision and safety.
3Ease of operation
If the toothed member on the button is subjected to downward force during operation, then the button may disengage from the tooth row, but this creates safety dangers
Solution Approach 1:
The toothed member can radially move relative to the button base, allowing it to dynamically respond to operational forces. The elastic member provides a restoring force that maintains engagement stability during normal operation, preventing accidental disengagement under downward forces while still allowing intentional disengagement when needed.
Solution Approach 2:
The elastic member is positioned between the button base and the toothed member to provide pre-compression and maintain constant contact pressure. This beforehand cushioning ensures the toothed member remains firmly engaged with the tooth row during operation, preventing accidental disengagement under operational forces while maintaining ease of intentional operation.
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
Ensures safe and efficient operation with stable clamping, quick adjustment, and reduced risk of disengagement, enhancing user-friendliness and operational safety.
Implementation Method 1
an elastic member disposed between the button base and the toothed member
Data Source
AI summary
A pipe wrench is provided, wherein the pipe wrench includes: a first clamp body including a first handle portion, a first clamping portion and a body portion connected between the first handle portion and the first clamping portion, the body portion including a guide groove having a tooth row; a second clamp body including a second handle portion, a second clamping portion and a pivot hole; and a button inserted in the guide groove and the pivot hole, including a button base, a toothed member and an elastic member disposed between the button base and the toothed member, the button base being movable relative to the guide groove to disengage the toothed member from the tooth row, the toothed member being movable relative to the button base in a radial direction of the button and releasably engaged with the tooth row.