Front Housing Collision Sensor With Dust-Blocking Rocker Arm Reset
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The reliability of sensing devices in automatic cleaning apparatuses is reduced due to dust accumulation, which affects the sensitivity of sensors and makes it difficult to reset the rocker arm after collisions.
Innovation Solution
Incorporating a dust blocking member with an elastic part, including a series of elastic rings, into the sensing device to prevent dust entry and facilitate rocker arm reset, ensuring the sensing device remains functional and sensitive during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rocker arm is rotatably arranged inside the sensing device, then the sensing device can detect obstacles effectively, but dust easily enters the sensing device and reduces reliability
Solution Approach 1:
A dust blocking member is introduced as an intermediary component between the external environment and the sensing device interior. This member selectively blocks dust particles while allowing the rocker arm to pass through and maintain its sensing function, thus resolving the contradiction between obstacle detection capability and dust protection.
Solution Approach 2:
The dust blocking member is designed as a flexible component that can deform to accommodate the rocker arm's rotational movement while maintaining its dust-blocking function. This flexible structure allows the sensing mechanism to operate freely while preventing dust contamination inside the sensing device.
2Ease of operation
If the rocker arm extends through the sensing device, then the sensing function is maintained, but the rocker arm becomes difficult to reset after collision
Solution Approach 1:
The dust blocking member is designed with dynamic characteristics, allowing it to deform and move during collision events to facilitate rocker arm reset, then return to its blocking position. This dynamic behavior enables both easy reset operation and maintained sensing functionality without compromise.
Solution Approach 2:
The dust blocking member is divided into multiple elastic rings that can independently deform and move. This segmentation allows the structure to flex during collision for easy reset while maintaining overall dust blocking capability, resolving the contradiction between operability and functionality.
3Reliability
If a dust blocking member is added to prevent dust entry, then sensing device reliability is improved, but device complexity increases
Solution Approach 1:
The dust blocking member utilizes a flexible membrane structure composed of elastic rings, which provides effective dust protection with minimal added complexity. The flexible film approach requires fewer components and simpler assembly compared to rigid blocking structures, thus improving reliability without significantly increasing device complexity.
Solution Approach 2:
The dust blocking member changes its physical parameters (shape, position) dynamically in response to collision forces, allowing it to serve multiple functions with a single component. This parameter variability enables the structure to maintain simplicity while achieving reliable dust protection and facilitating rocker arm reset.
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 dust blocking member effectively prevents dust from entering the sensing device, enhancing the operational reliability of the automatic cleaning apparatus by maintaining sensor sensitivity and facilitating the reset of the rocker arm after collisions.
Implementation Method 1
an elastic part coupled to the rocker arm and capable of biasing the rocker arm toward an initial position of the rocker arm
Implementation Method 2
a dust blocking member... The dust blocking member can prevent dust from entering the sensing device
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
An automatic cleaning apparatus includes: a chassis; a front housing arranged at a front end of the chassis; and a sensing device capable sensing movement of the front housing and sending a signal to a control mainboard of the automatic cleaning apparatus when the front housing touches an obstacle and moves relative to the chassis. The sensing device includes a dust blocking member and a rocker arm that triggers the sensing device to send the signal. The rocker arm has a first end rotatably arranged inside the sensing device, and a second end passing through the dust blocking member and extending out of the sensing device. A front housing reset device is arranged on the chassis and capable of biasing the front housing toward an initial position of the front housing.