Multi-bit Driver with Removable Tool Bits and Sliding Actuator

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Solution Overview

Problem

Conventional multi-bit drivers are limited to a fixed number of tool bits, making it inconvenient for users to access additional sizes or types of bits beyond the pre-determined set.

Innovation Solution

A multi-bit driver design that allows for removable and replaceable tool bits, utilizing a housing with a bit chuck and magnetically secured base portions, enabling the use of any type of tool bit, such as screwdriver, drill, or Allen key bits, through a sliding mechanism and actuator system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed number of tool bits are mounted in the housing, then the device structure is simple and compact, but the versatility and adaptability are limited

Engineering Contradiction:
ImproveversatilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The tool bit system is segmented into individual replaceable bits that can be independently selected and mounted. Each bit is a separate component that can be removed and replaced without affecting other bits, allowing the user to have a comprehensive set of bits available while maintaining a compact storage housing.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The multi-bit driver is designed with universal compatibility to accept various types of tool bits (screwdriver bits, drill bits, Allen key bits, etc.). The housing and bit chuck are designed with standardized interfaces that can accommodate different bit types, making the single device capable of performing multiple functions.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of operation

If only pre-determined tool bits are included, then the device is compact and easy to manufacture, but the ease of operation is reduced when additional bits are needed

Engineering Contradiction:
Improveease of operationVSAvoidease of manufacture
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The tool bits are extracted from fixed integration into the housing and made into removable, replaceable components. Users can take out bits from the housing, replace them with different bits as needed, and store them back in the housing. This extraction allows flexibility in bit selection while maintaining a compact storage solution.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The bit change mechanism is designed to be user-operated without requiring tools or complex procedures. Users can independently insert and remove bits from the bit chuck using simple manual actions, making the system self-servicing and eliminating the need for additional tools or assistance during bit changes.

Inventive Principle:
Principle #25Self-service

3Productivity

If a sliding mechanism with actuator is used, then the bit selection is quick and convenient, but the device complexity increases

Engineering Contradiction:
Improvebit change speedVSAvoiddevice complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The bit assembly incorporates a sliding mechanism that allows dynamic movement between retracted and extended positions. The actuator enables quick transition between different bit selections by sliding the desired bit into the extended position where it can be accessed and used. This dynamic mechanism maintains operational speed while keeping the housing compact when bits are retracted.

Inventive Principle:
Principle #15Dynamics

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 users to easily swap and use various tool bits without the limitations of a fixed set, enhancing versatility and convenience by allowing any type of bit to be presented for use.

Implementation Method 1

Each bit assembly has a base portion and a tool bit member removably and replaceably mounted on said base portion

Methodology Applied
Scientific EffectMagnetic attraction: Magnetism

Data Source

PatentEP1989026B1Multi-bit driver with removable and replaceable tools bits
Publication Date: 2014.03.26 GRAND GERARD
  • EP1989026B1 patent drawingFigure 1
  • EP1989026B1 patent drawingFigure 2
  • EP1989026B1 patent drawingFigure 3

AI summary

A multi-bit driver comprises a housing and a plurality of bit assemblies operatively retained within the housing. At least one of the bit assemblies has a base portion and a tool bit member removably and replaceably mountable on the base portion. A bit chuck in the housing is for receiving each tool bit member singularly in torque transmitting relation, and includes a bit- receiving opening for permitting each tool bit member singularly to extend therethrough. The housing includes a substantially transparent forward portion that permits viewing of the tool bit members. An actuator extends from each bit assembly exteriorly to the housing for operative engagement by a user, for cooperative movement of the actuator means and the bit assembly between a retracted configuration, a forwardly extended in-use configuration.