Rivet Holder Perpendicular Mandrel Retention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Rivet holders in rivet guns often fail to securely hold the mandrel in place during unrestricted movement, leading to potential loss of the rivet, which compromises user efficiency and comfort.
Innovation Solution
A rivet holder design featuring a holding member that applies a perpendicular force to the mandrel using a resilient component, such as an elastic ring or spring clip, which extends into a channel to grip the mandrel through friction, ensuring it remains in place even during free movement or when the tool is tilted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the rivet holder allows unrestricted movement for user comfort, then ease of operation is improved, but the mandrel may fall out due to insufficient securing
Solution Approach 1:
The resilient holding member is pre-configured to automatically engage with the mandrel upon insertion, creating a securing mechanism that is ready before movement occurs. This preliminary action ensures the mandrel is captured as it enters the channel, preventing subsequent dropout during unrestricted tool movement.
Solution Approach 2:
The resilient holding member changes its physical state from a relaxed position to an engaged position through elastic deformation. This parameter change in the holding member's shape and position allows it to dynamically adapt to the mandrel's presence and maintain retention force during tool movement, resolving the contradiction between freedom of movement and secure holding.
2Reliability
If a holding member is added to secure the mandrel, then mandrel retention is improved, but device complexity increases
Solution Approach 1:
The resilient holding member is designed to automatically perform its securing function without external intervention. Upon mandrel insertion, the holding member self-actuates through elastic recovery to engage and retain the mandrel, eliminating the need for additional actuators, sensors, or control mechanisms that would increase device complexity.
Solution Approach 2:
The holding member utilizes elastic deformation as its primary mechanism, changing its physical parameters (shape, position) in response to mandrel insertion. This simple parameter change approach avoids complex mechanical linkages, electronic controls, or multiple components, achieving reliable retention with minimal structural complexity.
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 solution allows for unencumbered user movement while preventing the rivet from falling out, enhancing user experience and efficiency by securely holding the mandrel in the rivet holder or gun.
Implementation Method 1
a resilient member (140) that applies a force on the mandrel (150) in a direction perpendicular to the length of the channel (120)
Implementation Method 2
The holding member also protrudes from the inner surface of the channel (120), thereby reducing or narrowing the diameter of the channel (120) for grasping the mandrel (150) and holding it in place
Data Source
Figure 1A~1D
Figure 2A~2D
Figure 3A~3D
AI summary
A work member holder and a power tool including such a work member holder. The work member holder comprises a body and a holding member. The body defines a channel for inserting a mandrel of the work member. The holding member is arranged to apply a force on the mandrel in a direction perpendicular to the length of the channel to hold the mandrel of the work member in the channel.