Extendable Bendable Speed Driver for Confined Fastener Access

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Solution Overview

Problem

Existing power tools struggle to efficiently access hard-to-reach areas due to their limited maneuverability, causing strain and difficulty in tasks such as tightening or loosening screws and bolts in confined spaces.

Innovation Solution

The Speed Driver features an extendable and bendable design with a motorized function, allowing it to reach tight spaces by extending and locking at various lengths and bending up to 90 degrees, combined with a rechargeable battery for power.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional power tools are used, then they provide sufficient power for tightening or loosening screws and bolts, but they cannot efficiently access hard-to-reach areas due to limited maneuverability

Engineering Contradiction:

Improveaccessibility to hard-to-reach areasVSAvoidmaneuverability in confined spaces

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The drive shaft is divided into multiple telescopic sections that can extend and retract independently, allowing the tool to reach into confined spaces while maintaining a compact storage size. The segmented structure enables the shaft to navigate around obstacles and access areas that would be unreachable with a rigid traditional tool.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The drive shaft incorporates a telescopic mechanism with lockable extensions that allow dynamic adjustment of the shaft length during operation. This dynamic capability enables the user to extend the shaft to reach distant fasteners, then lock it in place for stable operation, or retract it when moving to another location.

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If the drive shaft is extended to reach distant areas, then accessibility improves, but the structural stability and locking reliability may deteriorate

Engineering Contradiction:

Improvereachability in tight spacesVSAvoidlocking mechanism reliability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The telescopic sections are equipped with automatic locking mechanisms that engage lock features before the user releases the extension control. This preliminary locking action ensures the shaft is secured at the extended position before operational forces are applied, preventing accidental collapse or slippage during use.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The locking mechanism incorporates spring-loaded detents and friction elements that engage progressively as the telescopic sections are extended, providing incremental stabilization. This beforehand cushioning ensures that each section is securely locked before the next section is extended, maintaining reliability throughout the extended range.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Adaptability or versatility

If the handle is made bendable to navigate around obstacles, then maneuverability improves, but the structural strength and control precision may worsen

Engineering Contradiction:

Improvemaneuverability around obstaclesVSAvoidhandle structural strength

Core Design Contradiction:

Adaptability or versatilityVSStrength

Solution Approach 1:

The handle is divided into multiple rigid segments connected by pivot joints, allowing the handle to bend into various angles while maintaining structural integrity within each segment. The segmented design enables the handle to navigate around obstacles without requiring a single long flexible beam, which would compromise strength.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The handle incorporates lockable pivot joints that allow dynamic adjustment of the handle angle during operation. The user can bend the handle to navigate around obstacles, then lock the joints to maintain precise control and structural rigidity during the tightening or loosening operation.

Inventive Principle:

Principle #15Dynamics

4Ease of operation

If telescopic sections are added to extend the drive shaft, then the number of parts and device complexity increase

Engineering Contradiction:

Improveextendability of drive shaftVSAvoidnumber of telescopic sections and locking mechanisms

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The telescopic mechanism integrates the extension, locking, and retraction functions into a single coordinated system. The lock features are built into the telescopic sections themselves rather than being separate components, and the spring-loaded detents combine both the locking and indication functions, reducing the overall number of parts despite the extended functionality.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The telescopic sections serve multiple functions: they extend the reach of the tool, provide structural support at extended lengths, incorporate the locking mechanism, and offer visual indication of the extended position through color-coded rings. This multi-functionality reduces the need for separate components for each function.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250262725A1Speed driver

Publication Date: 2025.08.21 SEARCY DENZEL

AI summary

The idea of the speed driver is to enable users to move around small obstacles to reach screws, nuts, bolts, etc. in a way that creates less strain on the user. This makes hard to reach areas attainable while giving the user a motorized function that makes tightening and loosening less of a problem.