Cam-Ring Fluid Dispenser for Low-Effort Precise Dosing
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Solution Overview
Problem
Existing fluid product dispensers have predefined dose dispensing, require significant user effort for thick products, and suffer from mechanical clearance issues leading to chatter effects and blocking points.
Innovation Solution
A dispenser design featuring a cam ring and actuating part that transforms rotational movement into axial displacement to actuate the pump, with locking means to eliminate chatter and provide precise dose control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a push button is used to actuate the pump, then the dispenser structure is simple, but the user effort required is considerable especially for thick products
Solution Approach 1:
The invention transforms the actuation mechanism from linear push button motion to rotational motion of the actuating part. The cam ring converts this rotational motion into axial displacement of the pump rod, providing mechanical advantage that reduces user effort while maintaining structural simplicity.
2Reliability
If clearances are introduced between elements to prevent pump stress, then the pump is protected from stress, but mechanical chatter and blocking points occur
Solution Approach 1:
The invention introduces a dynamic locking mechanism where the locking means engage and disengage based on the operational state. During operation, the locking means are disengaged to allow smooth motion. In the rest position, the locking means engage to eliminate clearances and prevent chatter, while the cam profile ensures smooth transitions without creating blocking points.
3Object-generated harmful factors
If a locking mechanism is added to eliminate chatter, then mechanical chatter is reduced, but the device complexity increases
Solution Approach 1:
The locking means are integrated into the existing cam ring and actuating part structure. The same cam ring that transforms rotational motion also incorporates the locking functionality through radially adjustable locking means, eliminating the need for separate locking components and minimizing additional 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
Enables user-friendly, precise dose dispensing with reduced effort, eliminates mechanical chatter, and ensures smooth operation without blocking points, enhancing user experience.
Implementation Method 1
a cam ring movable in rotation relative to the actuating part, the actuating part comprising first cam means cooperating with second cam means of the cam ring so that the axial displacement is obtained by a transformation of a rotational movement of the actuating part with respect to the cam ring
Implementation Method 2
the cam ring further comprising at least one first locking means cooperating with at least one second locking means of the dispenser so as to block the rotational movement of the actuating part with respect to the cam ring when the actuating part is in the rest position
Data Source
AI summary
The A fluid product dispenser includes a reservoir for the fluid product, a dispensing pump that is attached to the dispensing head by an upper portion of the dispensing pump, an actuating part that is attached to the reservoir and can move axially from a rest position to a product dispensing position, and cam ring that is rotatable relative to the actuating part. The actuating part includes first cam means that cooperate with second cam means on the cam ring such that the axial movement is obtained by a conversion of a rotational movement of the actuating part relative to the cam ring. The axial movement allows the dispensing pump to be actuated. The cam ring further includes at least one first locking means that cooperates with at least one second locking means on the dispenser so as to block the rotational movement of the actuating part relative to the cam ring when the actuating part is in the low rest position.