Cordless Anchor Setting Tool Bit Retention Mechanism

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing anchor setting tools are labor-intensive and lack a universal mechanism to accommodate various anchor sizes and types, requiring separate tools for each size and type of anchor, and do not efficiently handle high-energy continuous strike actions.

Innovation Solution

A cordless anchor setting tool with a bit retention device that includes an upper and lower support member, a stationary plate, and a spring-biased clamp plate, allowing for longitudinal translation and secure retention of tool bits of different diameters and lengths, powered by a motor for efficient anchor setting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual hammer and pin-like tool are used for anchor setting, then labor intensity is high, but the tools can accommodate various anchor sizes with simple design

Engineering Contradiction:
Improvelabor efficiencyVSAvoidtool mechanism complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The bit retention device is designed with a universal clamping mechanism that can accommodate tool bits of various diameters and lengths through the spring-biased clamp plate that moves longitudinally. This allows a single power tool platform to set anchors of different sizes and types, replacing the need for multiple specialized manual tools while maintaining adaptability through the adjustable retention mechanism.

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

Solution Approach 2:

The clamp plate is designed to be movable rather than fixed, allowing it to translate longitudinally along the stationary plate to accommodate different bit diameters. The spring bias provides dynamic adjustment capability, enabling the retention device to adapt to various anchor sizes automatically, thus improving productivity without requiring complex manual adjustment mechanisms.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If separate setting tools are used for each anchor size and type, then tool versatility is low, but tool design and operation are simple

Engineering Contradiction:
Improveanchor size accommodationVSAvoidbit retention mechanism
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The bit retention device incorporates a universal design with a stationary plate and spring-biased clamp plate that can retain tool bits of various diameters and lengths. This allows the power tool to accommodate different anchor sizes and types from multiple manufacturers, providing high versatility without requiring separate specialized tools for each anchor variant.

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

Solution Approach 2:

The retention mechanism allows for parameter changes in the clamping force and clamp position through the spring bias system. The spring can be adjusted or replaced to accommodate different bit sizes, enabling the same basic mechanism to handle a wide range of anchor specifications while maintaining simple operation through automatic spring-loaded engagement.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If spring-biased clamp plate mechanism is used for bit retention, then bit security is high, but device structure becomes more complex

Engineering Contradiction:
Improvebit retention securityVSAvoidclamp plate mechanism
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The spring-biased clamp plate mechanism is designed to be self-adjusting and self-retaining. The spring automatically applies clamping force to secure the tool bit in place, and the longitudinal movement capability allows the system to self-adjust to different bit diameters without manual intervention. This self-service mechanism ensures reliable bit retention while minimizing the need for complex control systems or multiple adjustment components.

Inventive Principle:
Principle #25Self-service

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 efficient and universal retention of various anchor setting tool bits, reducing labor and accommodating different anchor sizes and types, while providing a high-energy impact mechanism for effective anchor setting in concrete.

Implementation Method 1

The clamp plate sleeves are surrounded by corresponding clamp plate springs that resiliently bias the clamp plate toward the stationary plate

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

a motor powered by a power source, such as, for example, a battery, and a transmission mechanism arranged in the transmission portion and driven by the motor

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 3

a transmission mechanism arranged in the transmission portion and driven by the motor for converting rotary motion of the motor to linear motion of driving striking rod

Methodology Applied
Scientific EffectMechanical advantage: Mechanical Advantage

Implementation Method 4

The striking rod can be moveable in a reciprocating manner from an impact received from the transmission mechanism to strike the tool bit

Methodology Applied
Scientific EffectImpact force: Impact Force

Data Source

PatentUS10875169B2Cordless anchor setting tool
Publication Date: 2020.12.29 BLACK & DECKER CORP
  • US10875169B2 patent drawing
  • US10875169B2 patent drawing
  • US10875169B2 patent drawing

AI summary

A bit retention device has an upper support member having an inner surface and an outer surface. A lower support member fixed to the upper support member. A stationary plate is mounted to the inner surface of the upper support member. A clamp plate opposes the stationary plate and is spring biased toward the stationary plate and slidably moveable between the upper support member and the lower support member.