Dispenser Pump Plastic Spring for Stable Deflection Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing dispensers with plastic springs face challenges in achieving optimal spring characteristics, such as consistent force delivery and efficient deformation, while maintaining manufacturing simplicity and cost-effectiveness, particularly in designs where spring struts extend over 90 degrees and require precise support formations to prevent radial movement.
Innovation Solution
A plastic spring design featuring two intermediate rings curved in opposite directions, with spring struts extending over 90 degrees, and support formations to prevent radial movement, along with a unique inlet radius configuration that allows for efficient force distribution and reduced plastic deformation, enabling a consistent spring force profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If spring struts extend over more than 90 degrees in the circumferential direction, then optimal deflection characteristic and shape technology are achieved, but manufacturing complexity increases and radial movement control becomes more difficult
Solution Approach 1:
The spring strut is divided into multiple sections with different circumferential extensions. At least one section extends over 90 degrees for optimal deflection, while other sections have reduced extensions to simplify manufacturing and control radial movement more easily.
Solution Approach 2:
Different sections of the spring strut have different geometric properties. The section requiring optimal deflection has extended geometry over 90 degrees, while other sections have modified geometry with reduced circumferential extension to ease manufacturing constraints.
2Ease of manufacture
If intermediate rings and spring rings have the same width, then manufacturing simplicity is maintained, but optimal force distribution and spring characteristic are not achieved
Solution Approach 1:
The intermediate rings are designed with different widths compared to the spring rings. This local variation in dimensional properties allows optimization of force distribution and spring characteristic in critical areas while maintaining overall manufacturing feasibility.
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 achieves a consistent spring force profile with reduced plastic deformation, allowing for efficient dispensing and improved manufacturing simplicity, while maintaining cost-effectiveness and optimal performance.
Implementation Method 1
a plastic spring (8) with a lower spring ring (9) and an upper spring ring (10), which spring rings (9, 10) are connected to one another in a resilient manner via spring struts (11)
Implementation Method 2
a plastic deformation of the plastic spring can initially occur due to the selected construction. The proportion of plastic deformations decreases sharply with further operations
Data Source
Figure 1
Figure 2~2a
Figure 3~4
AI summary
The invention relates to a dispenser (1) for dispensing flowable, for example liquid or paste-like, compounds (2), comprising a storage reservoir (6) for receiving the compound (2), and a dispenser pump (3) designed with a preferably modular construction, the dispenser pump (3) having an inlet channel and an outlet channel (26) and a pump chamber (4) delimited on the inlet and the outlet side by valves (15, 16), and also having a head piece (5), the head piece (5) having a dispensing opening (42), and a restoring device (7) formed by a spring is further provided between the head piece (5) and the storage reservoir (6). According to the invention, to advantageously improve a dispenser of the type in question, the restoring device (7) is formed by a plastic spring (8) having a lower spring washer (9) and an upper spring washer (10), which are arranged substantially coaxially with one another, a respective plane (E) spanned by each spring washer (9, 10) extending substantially perpendicular to a longitudinal axis (y) of the plastic spring (8), and furthermore the spring washers (9, 10) being compressibly connected to one another by sprung struts (11) extending over more than 90 degrees in the circumferential direction.