Micro switch solution for robotic vacuum cleaners: high-sensitivity triggering components supporting intelligent cleaning-Unionwell—Professional Manufacturer of Micro Switches

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Micro switch solution for robotic vacuum cleaners: high-sensitivity triggering components supporting intelligent cleaning

In intelligent floor cleaning robots, LiDAR and visual sensors are responsible for "long-range predictive navigation", while UNIONWELL G6 micro switches are responsible for "close range precise bottom protection". With its advantages of simple structure, fast response, durability and stability, and strong anti-interference, it has become an indispensable core component of the physical sensing system of floor sweepers.

2026-09-12

Micro switch solution for robotic vacuum cleaners: high-sensitivity triggering components supporting intelligent cleaning

As a commonly used device in smart homes, floor cleaning robots inevitably encounter steps and drops during daily cleaning. Once the wheels are suspended and continue to spin, it is easy to burn out the motor and cause equipment failure. The detection of suspended driving wheels relies on a reliable micro switch.
The Unionwell G6 series micro micro switches are designed specifically for smart devices in small spaces. With their compact size, sensitive triggering, and stable service life, they are the ideal components for anti fall solutions for robotic vacuum cleaners.
Product Advantages
Micro compact: Small in size, suitable for the limited installation space of robotic vacuum cleaners, facilitating structural design
Sensitive trigger: Short travel, the signal can be triggered immediately when the wheel leaves the ground, and the response is rapid
Stable and durable: Repeatedly triggered mechanically, it is not easy to fail, meeting the long-term high-frequency use needs of robots
Customizable: Terminal and handle types can be selected as needed to adapt to different manufacturers' sweeping machine structural solutions
Application scenarios of micro switches for robotic vacuum cleaners
Micro switches are used for physical position/contact detection and safety interlocking in floor sweepers, and are mechanically pressed to provide feedback signals to the main control. The following is a scenario summary:
1. Collision detection (front/side collision buffer plate)
Installed at the front of the body, inside the buffer bumper on both sides. When the machine collides with walls or furniture, the buffer plate squeezes the micro switch; The main control receives a signal and immediately stops moving forward, backward, or turning to protect the body and furniture.
Selection key points: equipped with pulleys/short swing rods, short action stroke, fast response, high requirements for multiple impact life
2. Bottom suspension/anti fall detection (universal wheel/ground inspection)
Bottom universal wheel position. When the machine is lifted, suspended, and reaches the edge of the stairs, the wheels bounce up and the micro switch is disconnected; The main control immediately shuts down the roller brush, edge brush, and drive wheel to prevent injury and falling due to idling.
Typical fault: Suspension switch failure, machine error "Suspension, please move position"
3. Component in place detection (most commonly used)
Dust box detection: Inside the dust box compartment, the dust box is equipped with a pressure switch. When the dust box is not installed, the machine is prohibited from starting cleaning. The APP/voice prompts that the dust box is missing to prevent dust from directly entering the host.
Water tank detection (integrated scanning and mopping): check the water tank slot and whether the clean water tank is installed properly; The water tank is not in place, and the mopping/water pump function is locked to avoid the risk of water leakage.
Rolling brush cover plate/edge brush compartment cover detection: safety interlock inside the cover plate. The cover plate is not fastened tightly, the machine cannot start, to avoid the rolling brush gripping hands.
4. Charging dock docking detection
The charging base is equipped with a micro switch, and the sweeping machine is fully charged. The body presses the base switch to confirm successful physical docking before allowing the charging circuit to be turned on to prevent virtual charging.
5. Power supply/buttons, battery compartment door (some models)
The power button and reset button are triggered by small micro movements;
Micro movement of battery compartment door: When the compartment door opens, cut off the main circuit, and perform power-off safety protection during battery maintenance and replacement.
Reference parameters
Project specifications
Rated load 0.1A (P1, gold plating optional)/5A (05)/10 (2) A 1/4HP (10)/12 (6) A (12) @ 125-250VAC
Operating force OF 50/100/150/250/350 gf
Initial contact resistance ≤ 100 m Ω
Insulation resistance ≥ 100 M Ω @ 500VDC
Dielectric strength AC 1000V RMS (50-60Hz)
Working temperature -25 ℃~+125 ℃
Working humidity ≤ 85% RH
Mechanical lifespan of 1000000 cycles
Electrical lifespan of 10000 to 50000 cycles (depending on model)
Operating frequency electrical 10-30 times/minute; Mechanical 120 times/minute
Circuit form SPDT/SPST-NO/SPST-NC
Terminal type: wire bonding terminal, direct insertion PCB, side exit PCB, 2.8 × 0.5mm quick connect
Drive rod plunger type, short straight rod 16.7mm, long straight rod 24.8/35.1mm, roller rod, simulated roller rod
Safety certification ENEC/CQC/UL; System ISO9001+IATF16949+ISO14001
How to select micro switches
When choosing a micro switch, the first thing to consider is the matching of electrical parameters. Including rated voltage, rated current, contact resistance, etc.
mechanical properties
Mechanical parameters such as action force, action stroke, and repetition accuracy directly affect the performance of the switch in the detection system. Excessive force can increase the burden on the mechanical system, while insufficient force may lead to unreliable movements. The repeatability accuracy is directly related to the consistency of machine detection.
environmental adaptability
According to the actual working environment of the sweeping machine, it is necessary to select switches with corresponding protection levels. Generally speaking, a protection level of IP65 or higher is a basic requirement. At the same time, factors such as working temperature range and vibration resistance should also be considered.
Summary
In intelligent floor cleaning robots, laser radar and visual sensors are responsible for "long-range predictive navigation", while micro switches are responsible for "close range precise bottom protection". With its advantages of simple structure, fast response, durability and stability, and strong anti-interference, it has become an indispensable core component of the physical sensing system of floor sweepers.

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