Sealing Body Movement Suppression in Liquid Discharging Devices
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Solution Overview
Problem
Existing liquid container configurations face challenges in accurately determining the position of the container while suppressing the movement of the sealing body to prevent evaporation, as the caulking portion often interferes with the ink tank, leading to potential dropout issues during removal.
Innovation Solution
A liquid discharging device with a holding portion that overlaps the contact surface of the sealing body, preventing movement and allowing accurate positioning by being non-contact with the liquid container, and utilizing a partially melted connection portion as the holding portion for simplified manufacturing and effective sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the caulking portion is used to fix the sealing rubber, then the sealing rubber is fixed to prevent evaporation, but the liquid container position cannot be accurately determined due to interference
Solution Approach 1:
The patent divides the fixing mechanism into two separate functional parts: the caulking portion (protrusion) that fixes the sealing rubber, and the holding portion (recess) that determines container position. By segmenting these functions spatially, the sealing rubber can be firmly fixed without interfering with the container's positioning accuracy.
Solution Approach 2:
The holding portion acts as an intermediary element between the container mounting portion and the sealing rubber. It provides a reference surface for accurate container positioning while allowing the sealing rubber to be fixed by the caulking portion without direct interference between the positioning and sealing functions.
2Reliability
If the holding portion is installed to overlap the contact surface of the sealing body, then the sealing body movement is suppressed, but the liquid container positioning accuracy may be affected
Solution Approach 1:
The holding portion is designed with specific local characteristics: it overlaps the contact surface area of the sealing body to provide stable fixing, while its geometry (width, depth, position) is optimized to avoid interfering with the container's positioning references. This local optimization allows simultaneous achievement of sealing stability and positioning accuracy.
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 solution effectively suppresses the movement and dropout of the sealing body during liquid container removal, enabling accurate positioning and reduced evaporation, while simplifying the manufacturing process and maintaining the sealing integrity.
Implementation Method 1
the holding portion is a portion that is upwardly projected on the contact surface by partially melting the connection portion
Data Source
AI summary
A liquid discharging device includes a liquid discharging portion that discharges liquid supplied from a liquid container; a container mounting portion in which the liquid container is detachably mounted; a connection portion in which a flow path for supplying liquid within the liquid container mounted in the container mounting portion to the liquid discharging portion is formed; a sealing body that surrounds the connection portion in a plan view, and includes a contact surface in contact with the liquid container mounted in the container mounting portion; and a holding portion that suppresses movement of the sealing body by being installed to overlap the contact surface in a plan view, in which the holding portion is not in contact with the liquid container mounted in the container mounting portion.