Elastically Deformable Upper Wall Fluid Dispensing Device
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Solution Overview
Problem
Existing fluid dispensing devices face challenges in preventing oxidation and contamination of products, particularly in cosmetic, chemical, and food industries, due to issues with air penetration and bacterial contamination, and often require two-handed operation or complex, costly mechanisms.
Innovation Solution
A fluid dispensing device with a rigid cylindrical body, a horizontally movable piston, and an elastically deformable upper sampling wall with a slotted shutter, where the piston is prevented from moving away from the upper wall by an O-ring and a spring mechanism, allowing one-handed operation and efficient product release without compromising the product's integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hermetically sealed container is used to prevent oxidation and contamination, then product protection is improved, but during product sampling operation pollutants can still penetrate into the interior volume
Solution Approach 1:
The container is segmented into a rigid body and a separate movable upper wall that can be detached. This segmentation allows the upper wall to be removed for sampling operations while the rigid body remains hermetically sealed, thus maintaining product protection while enabling safe sampling.
Solution Approach 2:
A sampling device acts as an intermediary between the user and the hermetically sealed container. This intermediary enables product sampling through the sealed container structure without compromising the seal, preventing pollutant penetration while allowing controlled product removal.
2Ease of operation
If a mobile bottom wall is used to increase pressure and open the shutter, then product dispensing is achieved, but the user must hold the container with both hands which is not ergonomic
Solution Approach 1:
Instead of making the bottom wall mobile to achieve pressure increase, the invention inverts the approach by making the upper wall movable. The user presses on the movable upper wall to increase pressure and open the shutter, enabling one-handed operation while maintaining a simple rigid container structure.
3Productivity
If the movable upper wall sinks deeper into the device during product withdrawal, then product is dispensed, but the withdrawal becomes less and less easy
Solution Approach 1:
The upper wall is designed with dynamic characteristics, being elastically deformable to allow movement during pressure application. This dynamic design enables the wall to deform under pressure for product dispensing while maintaining ease of operation through its elastic properties.
4Reliability
If a mini dispensing pump with movable piston is used to prevent air penetration, then product protection is improved, but the production cost increases and the device requires two-handed operation
Solution Approach 1:
The complex mini dispensing pump mechanism is extracted and replaced by a simplified system using a movable upper wall. This extraction removes unnecessary complexity while maintaining the essential function of preventing air penetration through the hermetically sealed rigid container body.
Solution Approach 2:
The movable upper wall serves multiple functions: it acts as a closure to prevent air penetration, a pressure application surface for product dispensing, and a shutter opening mechanism. This multi-functionality replaces the need for a separate complex pump mechanism.
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 device effectively prevents air penetration and contamination while enabling easy, one-handed operation, reducing the complexity and cost of the dispensing mechanism, and maintaining product quality by ensuring a sealed environment during use.
Implementation Method 1
the piston carries an O-ring which is compressed radially between a wall internal cylindrical body and a wall of the piston
Implementation Method 2
the upper wall is elastically deformable and is able to deform towards the inside of said volume when a pressure is exerted manually on the upper wall, to cause a pressure increase inside the volume
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a device (10) for dispensing a fluid product, comprising a rigid cylindrical body (12) having a vertical main axis, a rigid piston (14) which is oriented essentially horizontally and which can slide vertically inside the body (12), and an upper extraction wall (24) which closes the upper end of the body (12). According to the invention, the body (12), the piston (14) and the upper wall (24) define a space (26) that is intended to be filled with the product to be dispensed. In addition, the upper wall (24) comprises a slotted cover (28) that can open in order to connect the space (26) to the exterior. The device is characterised in that the upper wall (24) is elastically deformable and can deform into the space (26) when a pressure is exerted manually on the upper wall (24), so as to increase the pressure inside the space (26) and cause the slotted cover (28) to open.