Pressurized Adhesive Dispenser With Adjustable Lever Flow Control
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Solution Overview
Problem
Existing dispensers for viscous compounds from pressurized containers are cumbersome, costly, and difficult to operate, lacking adjustable product flow control and one-handed operation capabilities, with safety concerns due to complex construction and potential for user injury.
Innovation Solution
A dispenser design featuring a cylindrical vessel with a coaxially arranged valve, a rotatable actuator, and a lever with a gripping area, allowing for adjustable effective lever path through axial displacement and rotation, enabling one-handed operation and adjustable product flow without complex nozzle manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed nozzle arrangement with binary open/closed position is used, then the construction is simple, but the product flow cannot be adjusted
Solution Approach 1:
The nozzle arrangement is made rotatable relative to the lever, transforming it from a static binary position system to a dynamic adjustable system. This allows the nozzle to be positioned at different angles (0° for closed, 90° for open, and intermediate angles for partial flow), enabling continuous product flow adjustment while maintaining a relatively simple mechanical structure.
Solution Approach 2:
The solution adds a rotational dimension to the previously linear open/closed positioning. By allowing the nozzle arrangement to rotate around an axis perpendicular to the lever movement direction, the system transitions from one-dimensional (open/closed) to two-dimensional positioning, enabling flow rate control through angular adjustment.
2Ease of operation
If the nozzle arrangement can be rotated 90° to activate/deactivate the dispenser, then the product flow can be controlled, but the user cannot easily accomplish this, particularly the first time
Solution Approach 1:
The nozzle arrangement is pre-positioned in a default state (typically closed or open position) before use. This preliminary positioning eliminates the need for users to perform the 90° rotation activation step, allowing them to start using the dispenser immediately without spending time on initial setup or orientation.
3Ease of repair
If the nozzle arrangement is fixed to the release mechanism, then the construction is integrated, but the nozzle cannot be changed or cleaned
Solution Approach 1:
The nozzle arrangement is separated from the main release mechanism into an independent, detachable component. This segmentation allows the nozzle to be easily removed for cleaning or replacement without disassembling the entire dispenser mechanism, while the release mechanism itself remains relatively simple and unaffected by the nozzle's separability.
4Reliability
If the lever and nozzle arrangement engage with one another, then the actuation is mechanical, but the user can injure himself by being pinched
Solution Approach 1:
The potentially harmful engagement point where the lever and nozzle arrangement directly contact each other is eliminated. The nozzle arrangement is extracted as a separate, non-engaging component that rotates independently, removing the pinching hazard while preserving the reliable mechanical actuation of the release mechanism through the lever.
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 design provides safe, ergonomic, and adjustable one-handed operation with reduced risk of accidental discharge, allowing for easy regulation of product flow and nozzle changes, enhancing user safety and operational efficiency.
Implementation Method 1
a lever (10) with a grip region (13) for the user and an actuator (20) with a supporting region (22), which provides an engagement point (25) for the lever, wherein the lever, for actuating the valve (2) over the engagement point (25), can be pivoted about an axis (11) that is fixed with respect to the attachment (30)
Implementation Method 2
said actuator (20) is configured such that it can be rotated relative to the lever (10), to the attachment (30) and to the nozzle (7) about the vessel axis (4), such that the engagement point (25) for the lever can be moved axially with respect to the vessel axis (4) in order to change the effective lever path for the actuation of the valve (2)
Implementation Method 3
By pivoting the lever the user can exert force through the actuator onto the valve and open it in order to dispense product out of the vessel
Data Source
AI summary
The invention relates to a dispenser for dispensing an adhesive or sealant from a vessel, in particular from a pressurized vessel, via a valve. For this purpose, the dispenser is equipped with a lever with a grip region for actuating the valve. The dispenser also has an attachment, on which the lever is fitted in a pivotable manner, and an actuator with a supporting region for the lever. The actuator is configured such that it can be rotated relative to the attachment, and the supporting region is therefore variable, in order to change the effective lever path for the actuation of the valve, for activating or deactivating the dispenser or for varying the volume flow as product is dispensed.