Liquid Medicine Injection Device Shaft Guide Rib
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Solution Overview
Problem
Conventional liquid medicine injection devices experience power transmission inefficiencies due to shaft distortion, leading to reduced precision and potential leakage during the reciprocating motion of the shaft within the driving part.
Innovation Solution
A liquid medicine injection device design featuring a shaft that reciprocates within a guide part formed as a groove in a ribbed base, minimizing shaft distortion and maintaining airtightness, thereby improving power transmission precision and preventing fluid leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the shaft part performs reciprocating motion in the driving part, then power is transmitted to the reservoir part, but the shaft central axis becomes distorted and straightness deteriorates
Solution Approach 1:
A guide part is introduced as an intermediary component between the shaft part and the driving part. The guide part provides a guided path that constrains the shaft part's reciprocating motion, preventing distortion of the central axis while allowing power transmission to the reservoir part.
2Device complexity
If the shaft part reciprocates without guidance, then the device structure is simple, but power transmission precision deteriorates due to shaft distortion
Solution Approach 1:
The guide part serves as a simple intermediary structure that guides the shaft part's motion. This minimal addition ensures precise power transmission to the reservoir part, thereby improving liquid medicine flow precision without significantly increasing device complexity.
3Ease of operation
If the shaft part moves freely during reciprocating motion, then ease of operation is maintained, but fluid leakage occurs due to loss of airtightness
Solution Approach 1:
The guide part acts as a mediator that maintains proper alignment and airtightness during the shaft part's reciprocating motion. This allows the shaft to move freely for ease of operation while preventing fluid leakage through the driving part.
Data Source
AI summary
The present disclosure provides a liquid medicine injection device including: a needle part which is provided with one or more needle bodies formed to be injected into a body of a user; a reservoir part in which liquid medicine to be delivered to the needle part is contained; a driving part which is provided with a shaft part capable of performing a reciprocating motion in a preset direction and transmits power to the reservoir part such that the liquid medicine contained in the reservoir part is delivered to the needle part; and a base part in which the reservoir part, the needle part, and the driving part are installed The base part is provided with a rib part in which a guide part is formed in a shape of a groove part, and the shaft part is capable of performing the reciprocating motion in the guide part.