Trigger Dispensing Head Torque Stability via Auxiliary Tooth
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current connection systems between dispensing heads and bottles in trigger dispensing devices experience rapid torque decay after repeated use, leading to instability and difficulty in separating and reattaching the head, which affects the reliability and effectiveness of the dispensing process.
Innovation Solution
The dispensing head features a main skirt with flexible tabs and an auxiliary tooth mechanism that provides a snap-fit connection system, maintaining torque resistance through deformation of the annular wall and facilitating stable attachment and detachment, ensuring consistent performance even after multiple uses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional connection systems are used between dispensing head and bottle, then the connection allows rapid application, but the torque necessary for separation undergoes rapid decay after repeated use
Solution Approach 1:
The connection system is divided into multiple functional elements: a main skirt with flexible tabs for initial engagement, an auxiliary tooth for maintaining torque, and a coupling region for securing the connection. This segmentation allows each element to perform its specific function, with the auxiliary tooth specifically addressing torque maintenance after repeated use.
Solution Approach 2:
The patent utilizes elastic deformation of the flexible tabs and annular wall as a key parameter change mechanism. The flexible tabs deform elastically during engagement and maintenance operations, allowing the connection to adapt to repeated use while maintaining stable torque. This elastic parameter change enables the system to recover and maintain connection strength over time.
2Reliability
If the connection system uses flexible tabs with auxiliary tooth mechanism, then torque resistance is maintained throughout device life, but the structure becomes more complex
Solution Approach 1:
The auxiliary tooth is integrated into the main skirt structure, merging the torque maintenance function with the existing connection components. The flexible tabs are also integrated into the main skirt, combining engagement and torque maintenance functions in a single structural element rather than using separate components for each function.
Solution Approach 2:
The main skirt serves multiple functions simultaneously: it provides the structural connection between dispensing head and bottle, contains the flexible tabs for engagement, and incorporates the auxiliary tooth for torque maintenance. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in structural complexity.
3Reliability
If the auxiliary tooth emerges from the annular wall, then stable torque is maintained after repeated operations, but the annular wall must undergo controlled deformation
Solution Approach 1:
The annular wall is designed to undergo controlled elastic deformation to allow the auxiliary tooth to emerge and engage with the bottle neck. This parameter change is reversible and controlled, allowing the wall to return to its original shape after deformation, thereby maintaining integrity while enabling the torque maintenance function.
Solution Approach 2:
The annular wall is pre-designed with sufficient thickness and material properties to absorb and cushion the deformation required for auxiliary tooth emergence. This beforehand cushioning prevents excessive stress concentration and ensures that the deformation remains within elastic limits, protecting the overall structural integrity of the connection system.
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
This design maintains a stable torque throughout the life of the device, with initial opening torque ranging from 230Nm to 300Nm and subsequent openings from 100Nm to 150Nm, significantly reducing the decay rate compared to prior art, thus ensuring reliable and efficient operation.
Implementation Method 1
maintaining torque resistance through deformation of the annular wall
Data Source
Figure 1
Figure 2
Figure 3~8
AI summary
A connection system between a head (4) and a bottle (2) of a trigger dispensing device (1) comprises a main skirt (30), having a first flexible tab (40), and a neck (2b) having a first sloping plane (70a) and a first pocket (76). The first tab (40) extends circumferentially from a first end (40a) to a second end (40b), and the first end (40a) is joined to the annular wall (42) by means of a closing wall (40c). The system also provides for an auxiliary window (90), obtained through the annular wall (32) of the main skirt (30), and a rigid auxiliary tooth (100) of the neck (2b), suitable to snap into the auxiliary window (90).