Sealing Pump-Up Device Container Detachment Prevention

Solution Overview

Problem

Existing sealing and pump-up devices face issues with container detachment due to gas pressure, leading to potential leakage of sealing agents when the storage container is mounted to the sealant extrusion unit.

Innovation Solution

A container detachment prevention structure featuring engaging and piercing mechanisms that secure the container to the mounting section, preventing detachment and external leakage by ensuring the sealing member is reliably pierced and sealed, with additional features like resilient claw portions and a cover for enhanced security.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the storage container is mounted to the sealant extrusion unit by screwing the external threaded portion into the internal threaded portion, then the container can be easily attached and detached, but the thread loosens due to gas pressure causing container detachment

Engineering Contradiction:

Improvecontainer attachmentVSAvoidcontainer detachment prevention

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The engagement mechanism is divided into two distinct stages: a first engagement portion that initially secures the container to the mounting section, and a second engagement portion that provides additional securing after the seal membrane is pierced. This segmentation ensures that the container remains reliably attached throughout the entire operation, preventing detachment caused by gas pressure while maintaining ease of initial attachment.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The first engagement portion is designed to engage with the mounting section before the seal membrane is pierced, establishing initial security. The second engagement portion then engages after piercing, providing preliminary action to ensure the container is firmly secured before gas pressure is applied, thereby preventing subsequent detachment.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If the seal membrane is pierced to supply sealant, then the sealant can be delivered to the tire, but the container may detach and sealant may flow out externally

Engineering Contradiction:

Improvesealant supplyVSAvoidsealant leakage

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The engagement mechanism is divided into two distinct stages: a first engagement portion that initially secures the container to the mounting section, and a second engagement portion that provides additional securing after the seal membrane is pierced. This segmentation ensures that the container remains reliably attached throughout the entire operation, preventing detachment caused by gas pressure while maintaining ease of initial attachment.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The dual engagement portion structure provides beforehand cushioning against container detachment. By having the second engagement portion ready to engage after the seal membrane is pierced, the system pre-prevents the potential harmful effect of container detachment and sealant leakage before it can occur during the sealant supply process.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Productivity

If gas pressure is supplied to push the sealant out, then the sealant delivery efficiency increases, but the container detachment risk increases

Engineering Contradiction:

Improvesealant delivery efficiencyVSAvoidcontainer attachment stability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The engagement mechanism is divided into two distinct stages: a first engagement portion that initially secures the container to the mounting section, and a second engagement portion that provides additional securing after the seal membrane is pierced. This segmentation ensures that the container remains reliably attached throughout the entire operation, preventing detachment caused by gas pressure while maintaining ease of initial attachment.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The engagement mechanism transitions dynamically from the first engagement state to the second engagement state as the operation progresses. The resilient claw portions allow for dynamic adjustment and secure engagement at different stages, ensuring reliable container attachment stability even when gas pressure is applied for efficient sealant delivery.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentEP2305570B1Structure for preventing dislocation of container, and sealing pump-up device

Publication Date: 2016.08.10 BRIDGESTONE CORP

Figure 1
Figure 2
Figure 3

AI summary

A projection 28 is provided to a neck portion 26 of a liquid agent container 18 having an outflow opening 29 of a sealing agent 32 closed off with an aluminum seal 30. When the liquid agent container 18 is pushed into a container mounting section 35, the projection 28 engages with a claw portion 42 stopping detachment of the liquid agent container 18 from the container mounting section 35. When the liquid agent container 18 is pushed further into the container mounting section 35 after engagement of the claw portion 42 and the projection 28, the aluminum seal 30 of the outflow opening 29 is pierced by a blade portion 37A and the sealing agent 32 flowing out from the outflow opening 29 flows into an inflow section 47. A compressor unit 12 supplies compressed air into the inflow section 47, and a joint hose 78 supplies the sealing agent 32 ofthe inflow section 47 into a tire 100. Since the sealing device 10 is equipped as above, the liquid agent container 18 is prevented from detaching from the container mounting section 35 and the sealing agent 32 flowing out externally can be avoided.