Pump Dispenser Locking Structure to Prevent Spring Deformation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional pump dispensers face issues with corrosion and deformation of metallic coil elastic members due to contact with contents, and prolonged compression leads to degradation of elastic force, affecting the dispenser's durability and functionality.
Innovation Solution
A pump dispenser design featuring a deformation prevention locking part that guides a chaplet to move axially, allowing or restricting the pressing operation of the head part, while incorporating an elastic member with uniform elasticity and a helical groove to prevent deformation, and using a synthetic resin for the elastic member to prevent corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metallic coil elastic member is used to support the shaft and head part, then the elastic member can provide sufficient elastic force, but the coil elastic member is corroded or deformed due to contact with the content
Solution Approach 1:
A resin layer is introduced as an intermediary between the metallic coil elastic member and the content. The resin layer coating the surface of the elastic member prevents direct contact between the metal and content, eliminating corrosion while the metallic core maintains sufficient elastic force for shaft support.
Solution Approach 2:
The elastic member is constructed as a composite structure combining metallic coil providing elastic force with a resin coating providing corrosion resistance. This composite material approach allows the elastic member to simultaneously achieve both mechanical strength and chemical resistance.
2Ease of operation
If the head part is constrained to the housing to prevent pressing operation during distribution, then the head part is protected, but the elastic member is left in compressed state and elastic force is degraded
Solution Approach 1:
The protection mechanism is segmented into two states: during distribution, the chaplet engages with the housing to constrain the head part; during use, the chaplet can be disengaged to allow pressing. This segmentation allows the elastic member to remain uncompressed during storage while enabling protected operation during distribution.
Solution Approach 2:
The chaplet-housing interaction provides dynamic protection: the chaplet can rotate to engage with the housing for protection during distribution, and can be rotated back to disengage for normal operation. This dynamic mechanism allows the elastic member to switch between compressed and uncompressed states as needed.
3Ease of operation
If the chaplet is allowed to rotate freely, then the head part can be operated, but the elastic member may be deformed due to lateral forces
Solution Approach 1:
The guidance mechanism operates in a different dimension - the chaplet rotates freely in the rotational dimension for operation, while the deformation prevention locking part constrains lateral movement in the radial dimension. This dimensional separation allows rotation freedom while preventing elastic member deformation.
Solution Approach 2:
The deformation prevention locking part acts as an intermediary between the chaplet and the elastic member. It allows rotational movement to pass through while blocking lateral forces that would deform the elastic member, effectively filtering the types of motion transmitted to the elastic component.
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 maintains elastic force over time, enhances durability by preventing deformation, and avoids content alteration, improving the dispenser's performance and user convenience.
Implementation Method 1
an elastic member that is provided on a circumferential surface of the shaft and elastically supports the chaplet and the head part
Data Source
AI summary
Disclosed is the invention of a pump dispenser wherein a deformation prevention locking part induces a chaplet to move in the axial direction in a housing at the time of rotation of a head part, thereby allowing or restricting an operation of pressing a head part while preventing the deforming of an elastic member. The disclosed pump dispenser comprises: a cap part fastened to a container; a housing which is provided at the cap part and in which a content stored in the container remains in a dischargeable state; a shaft received in the housing so as to be movable in the axial direction, the shaft including a head part for discharging the content remaining in the housing to the outside through a pressing operation by an external force; a chaplet provided in the housing such that the shaft is inserted so as to be able to extend therethrough, the chaplet allowing or blocking the movement of the shaft on the basis of the angle of rotation of the head part; an elastic member provided on the circumference surface of the shaft and elastically supporting the chaplet and the head part; and a deformation prevention locking part for inducing the chaplet to move in the axial direction in the housing at the time of rotation of the head part, thereby allowing or restricting an operation of pressing the head part while preventing the deformation of the elastic member.