Wall-Climbing Vehicle Bottom Cover with Circular Air Intake

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Solution Overview

Problem

Conventional wall-climbing toy vehicles often experience issues with insufficient suction, poor maneuverability on curved surfaces, and low ground clearance, leading to frequent falls and inability to navigate obstacles.

Innovation Solution

A wall-climbing vehicle with a bottom cover featuring a circular air intake arrangement, alternating bumps and dots to enhance suction and balance, and sealing strips to create a closed area for negative pressure, allowing for improved air suction and obstacle avoidance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Force

If the bottom cover includes a hole for air flow, then air suction is enabled, but the suction volume is insufficient causing the vehicle to fall off the wall

Engineering Contradiction:

Improvesuction forceVSAvoidstability on wall

Core Design Contradiction:

ForceVSReliability

Solution Approach 1:

The bottom cover is segmented into multiple functional zones: a central air intake area with circular arrangement for primary suction, surrounded by alternating bumps and dots for secondary suction and airflow control. This segmentation allows each element to contribute differently to the overall suction force, increasing total suction volume and preventing falls.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The air intake arrangement transitions from a simple hole (0D/1D) to a two-dimensional circular pattern with multiple openings distributed across the bottom cover surface. This dimensional expansion increases the effective air intake area and suction volume, providing sufficient holding force on vertical walls.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Ease of operation

If the bottom cover has plane and smooth surfaces, then manufacturing is simple, but maneuverability on curved wall sections is poor

Engineering Contradiction:

Improvemaneuverability on curved wallVSAvoidbottom cover manufacturing

Core Design Contradiction:

Ease of operationVSEase of manufacture

Solution Approach 1:

The bottom cover features local quality variations with alternating bumps and dots distributed across its surface. These localized three-dimensional features enhance airflow control and suction distribution, improving maneuverability on curved wall sections while maintaining a relatively simple overall flat structure for ease of manufacture.

Inventive Principle:

Principle #3Local quality

3Adaptability or versatility

If the vehicle has low ground clearance, then the structure is compact, but it cannot cross obstacles between the wall and the vehicle

Engineering Contradiction:

Improveobstacle crossing capabilityVSAvoidground clearance

Core Design Contradiction:

Adaptability or versatilityVSLength of moving object

Solution Approach 1:

The bottom cover with its alternating bumps and dots creates a dynamically adaptable air suction system. The three-dimensional features allow the suction force to adjust and distribute unevenly across the bottom surface, enabling the vehicle to maintain adhesion while navigating over small obstacles despite limited ground clearance.

Inventive Principle:

Principle #15Dynamics

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 vehicle achieves enhanced suction, balance, and maneuverability on vertical walls, including curved sections and over obstacles, ensuring stable climbing without hindrance.

Implementation Method 1

The closed area may be continuously evacuated by the circular air intake arrangement to form a negative pressure

Methodology Applied

Scientific EffectNegative pressure: Pressure Drop

Implementation Method 2

The plurality of bumps may be configured to increase air suction and balance the negative pressure below the bottom cover

Methodology Applied

Scientific EffectAir suction: Suction

Implementation Method 3

The plurality of dots may be configured to enable air flow separation to reduce the airflow into the air intake area to facilitate balancing of the wall-climbing vehicle

Methodology Applied

Scientific EffectAir flow separation: Flow Separation

Data Source

PatentUS11638882B2Wall-climbing vehicle and bottom cover of such vehicle

Publication Date: 2023.05.02 SHANTOU CHENGHAI LICHENGFENG PLASTIC PROD FAB

AI summary

A wall-climbing vehicle having a bottom cover configured along a bottom portion. The bottom cover is disposed along the bottom portion such that a gap between the vertical wall and the bottom portion of the wall-climbing vehicle is formed. An air intake area is configured along a middle portion of the bottom cover to enable symmetrical weight balance. The air intake area is configured to accommodate a circular air intake arrangement that includes a circular configuration to create a large opening along the air intake area to increase an air suction volume along the air intake area. The wall-climbing vehicle includes a plurality of sealing cloths strips configured along sides the bottom portion to form a closed area in the wall-climbing vehicle to be continuously evacuated to form a negative pressure. Moreover, a plurality of bumps and a plurality of dots may be provided for balancing effect.