Insertion Device Driving Unit Gear Alignment
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Solution Overview
Problem
Existing insertion devices face challenges in efficiently transmitting rotation driving forces to rotating tubular members, leading to suboptimal performance and durability issues due to frictional resistance and wear between the driving unit and channel defining portion.
Innovation Solution
The insertion device incorporates a driving unit with a linear member and gear portion that is supported by both distal and proximal support units, ensuring the driving axis remains parallel to the longitudinal axis, allowing proper tooth engagement with the rotating tubular member's inner peripheral gear portion, thereby transmitting rotation forces effectively and minimizing wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driving unit is extended through the member channel with gear portion engaging the inner peripheral gear portion, then the rotation driving force is transmitted to the rotating tubular member, but frictional resistance and wear occur between the driving unit and channel defining portion
Solution Approach 1:
The channel defining portion is divided into a proximal channel defining portion and a distal channel defining portion, with a support portion provided between them. This segmentation allows the support portion to be positioned at a specific location to reduce frictional resistance and wear on the driving unit while maintaining the rotation driving force transmission function.
Solution Approach 2:
The support portion acts as an intermediary element between the proximal and distal channel defining portions. It provides a bearing surface for the driving unit, reducing direct contact and friction between the driving unit and the channel walls, thereby minimizing wear while still allowing the gear portion to engage the inner peripheral gear portion for force transmission.
2Manufacturing precision
If the driving axis is not parallel to the longitudinal axis, then the gear portion cannot properly engage with the inner peripheral gear portion, but maintaining parallel alignment requires precise support
Solution Approach 1:
The support portion is designed to automatically guide and maintain the driving axis parallel to the longitudinal axis through its geometric configuration. The proximal and distal channel defining portions, combined with the support portion, create a self-aligning structure that ensures proper parallelism without requiring additional active control mechanisms or complex adjustment devices.
3Ease of operation
If the driving unit rotates without proper support, then rotation is achieved, but the driving axis becomes misaligned causing improper tooth engagement
Solution Approach 1:
The channel defining portion is segmented into proximal and distal portions with an intermediate support portion. This segmentation allows the support portion to provide rotational support while maintaining axis alignment, ensuring that the driving unit can rotate smoothly with proper tooth engagement between the gear portion and inner peripheral gear portion.
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
This configuration ensures reliable rotation of the rotating tubular member relative to the insertion section, enhances durability by reducing frictional resistance, and prevents wear between the driving unit and channel defining portion.
Implementation Method 1
a gear portion which is provided to the distal direction side of the linear member and to which a driving force is configured to be transmitted via the linear member; a driving force receiving portion which is provided to the rotating tubular member, and to which a rotation driving force to rotate the rotating tubular member is configured to be transmitted when the gear portion is driven
Data Source
AI summary
An insertion device includes a channel defining portion extended through an inside of an insertion section up to a base portion toward a distal direction and defining a channel that is open to an outside of the insertion section in an opening of an outer peripheral portion of the base portion, and a driving unit extended through an inside of the channel with a driving axis being an axial center and being rotatable in directions around the driving axis when driven. The insertion device includes a driving force receiving portion connected to a gear portion in the opening of the channel, and a support unit supporting the driving unit so that the driving axis is parallel to the longitudinal axis in the gear portion.