Adjustable Hand Rest With Sliding Locking Mechanism

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional hand grips for heavy equipment often fail to accommodate varying operator hand sizes and shapes, leading to fatigue, reduced productivity, and potential injury due to inadequate support, and require complex adjustments that hinder quick setup for different users.

Innovation Solution

A hand grip with an adjustable hand rest that can slide and rotate, featuring a locking mechanism with interlocking teeth and a cam arm system, allowing for easy height and angle adjustments using a single free hand, accommodating different hand sizes and shapes without the need for additional tools or personnel.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a stationary hand rest is used, then the structure is simple, but it cannot accommodate different hand sizes and shapes

Engineering Contradiction:

Improveaccommodation of different hand sizes and shapesVSAvoidstructure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The hand rest is made adjustable rather than fixed, allowing it to change position dynamically. The rest can be moved along the grip body to different locations and locked into place, enabling adaptation to various hand sizes and shapes while maintaining a relatively simple overall structure.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If an adjustable hand rest is used, then adaptability to different hand sizes is improved, but adjustment requires multiple hands and special equipment

Engineering Contradiction:

Improveadjustability for different usersVSAvoidease of adjustment

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The adjustment mechanism is designed to be self-operating by the user without requiring external assistance or special tools. The spring-loaded mechanism with release buttons allows the operator to easily move and reposition the hand rest independently, making the system self-servicing.

Inventive Principle:

Principle #25Self-service

3Reliability

If a complex locking mechanism is used, then the hand rest can be securely locked in position, but adjustment time increases

Engineering Contradiction:

Improvelocking reliabilityVSAvoidadjustment time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The spring mechanism is pre-loaded to automatically engage with the teeth on the grip body when the release button is pressed, eliminating the need for manual locking operations. The preliminary spring tension ensures immediate and reliable locking as soon as the adjustment position is reached.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS9323279B2Adjustable grip hand rest

Publication Date: 2016.04.26 OTTO ENGINEERING INC

AI summary

A hand grip for use in controlling machinery. The grip includes a grip body and a hand rest connected to the grip body. The hand rest adjustably slides and rotates with respect the grip body grip. The hand rest includes a first locking part that is configured to engage the grip body to lock the hand rest in a locked position with respect to the grip body such that the hand rest does not slide with respect to the grip body and configured to disengage from the grip body such that the hand rest slidably moves with respect to the grip body. The hand rest includes a second locking part that, when unlocked, allows the hand rest to rotate with respect to the grip body, and that, when locked, prevents the hand rest from rotating with respect to the grip body.