Adjustable Hand Grip Lever for Insulation Stripping Tool
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Solution Overview
Problem
Conventional pliers-type gripping tools are limited in accessibility due to fixed angular positions and inflexible grip widths, which can lead to user fatigue and inadequate handling in difficult-to-reach areas, particularly for users with non-average hand sizes.
Innovation Solution
The introduction of adjustable angular and thickness settings for the hand grip levers, utilizing angle setting means and screw or cam mechanisms to lock the grip in desired positions and adjust the grip width to fit individual hand sizes, allowing for better accessibility and reduced user fatigue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the hand grip levers are made with fixed angular position relative to the tool body, then the tool structure is simple and easy to manufacture, but the tool cannot be handled optimally in areas of difficult access
Solution Approach 1:
The hand grip lever is designed with adjustable angular position relative to the tool body, allowing the operator to change the angle between the lever and tool body to suit different working conditions and access requirements, transforming a static structure into a dynamic adaptable one
Solution Approach 2:
The hand grip lever is divided into multiple sections that can be independently adjusted and locked at different angles, allowing the distal section to be positioned at an optimal angle for accessing difficult locations while maintaining structural integrity
2Adaptability or versatility
If the grip width is fixed for average hand size, then the tool structure is simple, but users with non-average hand sizes experience fatigue and inadequate handling
Solution Approach 1:
The grip width of the hand lever is made adjustable rather than fixed, allowing users to modify the grip dimensions to match their hand size, thereby adapting the tool to different users and reducing fatigue
Solution Approach 2:
The physical dimensions of the grip section are made variable through adjustment mechanisms that allow changing the grip width parameter to suit different hand sizes, transforming a tool with fixed parameters into one with adaptable parameters
3Adaptability or versatility
If the hand grip is rigidly attached to the tool body, then the structure is simple and strong, but the tool cannot be adjusted for difficult-to-reach areas
Solution Approach 1:
The hand grip lever is segmented into multiple sections connected by articulation joints, allowing angular adjustment while maintaining structural strength through proper joint design and locking mechanisms
Solution Approach 2:
The connection between hand grip lever sections and tool body is made dynamically adjustable through articulation joints that allow angle changes while maintaining strength when locked in position
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 easier handling of objects in hard-to-reach locations and reduces user fatigue by allowing customizable grip dimensions, improving the tool's adaptability and comfort for various hand sizes while maintaining cost-effectiveness.
Implementation Method 1
cam means with cooperating inclined ramp surfaces serve to adjust the distance between the shell and lever body components
Implementation Method 2
screw means are provided for adjusting the distance between the metal hand lever body and a synthetic plastic shell
Data Source
AI summary
A pliers-type gripping tool includes a pair of gripping jaws, a pair of pivotally connected hand grip levers for operating the gripping jaws between an open separated condition and a closed gripping condition, and an adjusting device for varying one of the physical operating properties of the tool. In one embodiment, the hand grip levers are sectional, and the adjusting device includes an angle setting arrangement for determining the angular relationship of the sections, thereby to permit use of the tool to engage an object at a relatively inaccessible location. In a second embodiment, at least one of the levers includes a metal lever body member partially enclosed by a synthetic plastic shell member. An adjusting device controls the lateral relative positions of the lever body and shell members to adjust the effective thickness of the hand grips to correspond with the size of the hand of the user.