Adjustable Pliers with Lever Positioning Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional adjustable pliers require continuous finger pressure on the pivot button for adjustment, making the process inconvenient and potentially causing user discomfort.
Innovation Solution
A lever-type positioning device is integrated into the pliers, allowing users to adjust the opening distance by turning a lever member, which can be released without maintaining finger pressure, enabling easier and more comfortable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pivot button mechanism is used for adjustment, then the clamping width can be adjusted, but the user needs to continuously press the pivot button which causes inconvenience and user discomfort
Solution Approach 1:
The invention transforms the static pivot button pressing mechanism into a dynamic lever-based system. The lever can be rotated to toggle between locked and unlocked states, allowing the connection part to slide freely during adjustment without continuous user input. This dynamic state change resolves the contradiction by enabling easy adjustment while reducing operational complexity.
Solution Approach 2:
The lever positioning device automatically maintains the connection part in either locked or unlocked state without requiring continuous user intervention. Once the lever is positioned, the system self-maintains the state through the positioning tooth engagement with adjustment teeth, eliminating the need for continuous finger pressure and improving ease of operation.
2Reliability
If continuous finger pressure is applied on the pivot button, then adjustment can be maintained, but user discomfort and hand fatigue occur
Solution Approach 1:
The lever positioning device performs the locking action in advance by engaging the positioning tooth with adjustment teeth before adjustment is needed. This preliminary engagement ensures stability during use without requiring continuous user pressure, thereby maintaining reliability while eliminating user discomfort.
Solution Approach 2:
The invention replaces the continuous mechanical pressure system (pivot button) with an intermittent lever-based positioning system. The lever system uses positional engagement rather than continuous force application, substituting a force-based mechanism with a position-based mechanism that eliminates hand fatigue while maintaining adjustment stability.
3Adaptability or versatility
If the pivot button is pressed to release the position limiting tooth, then the driving handle can slide for adjustment, but the operation becomes cumbersome
Solution Approach 1:
The invention segments the adjustment mechanism into distinct functional components: the lever for state toggling, the positioning tooth for engagement, and the connection part for sliding. This segmentation allows the lever to control the release mechanism independently, enabling easy adjustment by simple lever rotation without cumbersome continuous pressing operations.
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
Facilitates convenient adjustment of the opening distance between clamp parts without continuous finger pressure, improving user experience and reducing hand discomfort during use.
Implementation Method 1
The lever positioning device comprises a lever member (41) and a positioning member (42). The lever member (41) is disposed in the movement groove (25), and rotates with respect to the first handle (20) about the pivot axis (X) between a locked position and a release position.
Implementation Method 2
an elastic member (43), wherein the elastic member (43) pushes the positioning member (42) along the pivot axis (X), so that the positioning tooth (421) is engaged with the adjustment tooth (24).
Implementation Method 3
The connection part (23) is combined with the slide groove (13) and slidable with respect to the slide groove (13), such that the first clamp part (11) and the second clamp part (22) open and close with respect to each other.
Data Source
AI summary
A pair of adjustable pliers with lever type positioning device includes a clamp body, a first handle slidably engaged with the clamp body, a second handle, and a lever type positioning device. The first handle includes an adjustment tooth. The lever type positioning device pivotally combines the second handle with the first handle, so that the second handle and the clamp body are linked. The lever type positioning device includes a lever member and a positioning member. The lever member pivots between a locked position and a release position. The positioning member is combined with the lever member and includes a positioning tooth. At the locked position, the positioning tooth is engaged with the adjustment tooth. At the release position, the positioning member is disengaged from the adjustment tooth, thereby adjusting the opening degree between the clamp body and the first handle.