Bit Holder Bumper Structure for Fixing Sleeve Impact Protection
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Solution Overview
Problem
Conventional bit holders are prone to damage when the bit hits the anchoring base, especially in timber construction where screws are sunk deep, leading to excessive shock loads on the fixing sleeve.
Innovation Solution
A bit holder equipped with a shock load protection device, such as an inclined surface or a truncated cone-shaped annular body section, that absorbs and reduces the impact force, preventing damage to the fixing sleeve and providing haptic feedback to the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bit holder is used to drive fastening elements deep into anchoring bases, then the fastening element can be securely anchored, but the bit holder is subjected to excessive shock loads that can damage the fixing sleeve
Solution Approach 1:
The patent applies beforehand cushioning by providing a shock load protection device that absorbs impact energy before it reaches the fixing sleeve. This protective mechanism is pre-positioned to cushion the fixing sleeve against shock loads generated when the bit holder strikes the anchoring base during deep fastening element installation.
2Ease of manufacture
If the bit holder structure is simplified for easy manufacturing, then production cost decreases, but the shock load protection capability is reduced
Solution Approach 1:
The patent applies segmentation by dividing the bit holder into distinct functional components: a fixing sleeve for securing the bit, and a separate shock load protection device. This segmentation allows the shock protection function to be added as a distinct element that can be manufactured separately and assembled, maintaining manufacturing simplicity while providing necessary protection.
Solution Approach 2:
The shock load protection device acts as an intermediary between the bit holder and the anchoring base. It mediates the interaction by absorbing shock loads during operation, protecting the fixing sleeve from direct impact while allowing the bit holder to maintain its simple structural design for easy manufacturing.
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
The shock load protection device effectively reduces the impact force on the bit holder, preventing damage and ensuring operational reliability even under harsh conditions, while allowing for secure bit retention and easy bit changes.
Implementation Method 1
a shock load protection device designed to protect against a shock load acting on the bit holder (in particular on a fixing sleeve of the bit holder) when the bit holder strikes an anchoring base
Data Source
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AI summary
Bit holder (100) for holding a bit (102) for coupling the bit (102) with a drive tool (104), wherein the bit holder (100) has a receiving device (106) designed to receive the bit (102), a tool coupling (108) designed to couple with the drive tool (104), and an impact load protection device (110) designed to protect against an impact load acting on the bit holder (100), in particular on a fixing sleeve (124) of the bit holder (100), when the bit holder (100) is bumped against an anchoring base (112) when a fastening element (114) to be driven by means of the bit (102), the drive tool (104) and the bit holder (100) is inserted into the anchoring base (112).