Vehicle Drive Boot Structure for Rainwater Drainage
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Solution Overview
Problem
Drive devices for opening and closing vehicle components, such as back doors, face the challenge of rainwater accumulation in the boot due to inadequate drainage design.
Innovation Solution
The drive device incorporates a boot with a protruding part and inclined surface that directs rainwater away from the boot, along with a pressed part and guide surface for easy attachment, ensuring effective drainage and stable positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the boot is designed as a simple tube structure, then the manufacturing is simple, but rainwater accumulates inside the boot
Solution Approach 1:
The boot is segmented into functional zones: a water discharge channel formed by the protruding part separating water flow from the boot interior, and a water storage chamber. This segmentation allows rainwater to be directed out of the boot through the discharge channel while maintaining structural simplicity
Solution Approach 2:
The protruding part acts as an intermediary structure that intercepts rainwater flowing along the boot exterior and redirects it through the water discharge channel away from the boot interior, preventing water accumulation without complex sealing mechanisms
2Reliability
If the attachment part has a large size, then the boot can be securely attached, but the space required for attachment increases
Solution Approach 1:
The attachment part features localized functional zones: a pressing surface for secure attachment to the drive device main body, and a protruding part for water discharge. This local quality differentiation allows secure attachment in a compact area while maintaining water discharge functionality
Solution Approach 2:
The protruding part serves multiple functions: it provides structural support for attachment security, creates the water discharge channel, and forms the pressing surface. This multi-functionality reduces the overall attachment space required while maintaining reliability
3Strength
If the boot material is rigid, then the structure is strong, but rainwater flows less smoothly along the boot surface
Solution Approach 1:
The boot and protruding part feature curved surfaces that guide rainwater flow smoothly along the boot exterior and into the water discharge channel. The curvature facilitates water flow while the underlying rigid structure maintains structural strength
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
Prevents rainwater accumulation in the boot, facilitates easy attachment even in limited space, and stabilizes the boot's posture during operation.
Implementation Method 1
The inclined surface is provided on the boot main body side and is inclined with respect to the extension/retraction direction of the drive device main body. The inclined surface is formed so as to approach the drive device main body as the distance from the inclined surface to the tip part of the protruding part decreases.
Data Source
AI summary
Provided is a drive device for opening and closing opening/closing body 2 supported by vehicle body 3 in an openable and closable manner. The drive device includes drive device main body 11 and boot 12. The device main body 11 is connected to vehicle body 3 and opening/closing body 2, and telescopic. A wire extending from drive device main body 11 passes through the inside of boot 12 including boot main body 31 and attachment part 32. Attachment part 32 is disposed at the end of boot main body 31 and attached to drive device main body 11, and includes protruding part 42 that protrudes toward the outside of drive device main body 11.