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  4. Car seat pressure switch...

Car seat pressure switch

With the development of science and technology in the field of vehicle transportation, the seat as a function of monitoring whether the occupants are wearing a seat belt and reminding them has received more and more attention from the market.The pressure switch element is used to detect the presence of human body pressure from the seat surface through the seat, which can effectively sense the presence of the seat user and realize the detection function.


A simple application of the human body pressure switch product of this type of seat is to arrange a pressure switch element and a matching structure on the bearing frame under the foam cushion of the seat cushion inside the vehicle seat.When the pressure of the human buttocks acts on the seat surface of the seat sponge bearing pad, the weight of the human body presses the pressure switch of the human body, which then triggers the sensor contact of the corresponding pressure switch element to produce the circuit output characteristic of on-off characteristic.The human body pressure switch usually has an internal foil-type touch switch or a micro switch composed of a pressure switch element and a receptacle.The receptacle of the switch is composed of a load-bearing platform for the switch contacts of the pressure switch element, a pressure-bearing cover body that bears the bottom pressure of the seat cushion, and an elastic pressure contact body.


In such applications, a plate-shaped bearing platform is usually used to support the bearing frame.That is to say, the pressure switch element is supported by the plate-shaped flying bearing platform. When the human body sits on the seat, the seat sponge bearing pad is pressed down, and then the switch contact of the pressure switch element is pressed and the contact is turned on. .When the seat body leaves, the sensor contact of the seat sponge bearing pad and the pressure switch element restores its shape until the contact is disconnected.


However, because the load-bearing platform supported on the load-bearing framework is often too large in size, designers are often troubled by features that are difficult to meet such as space constraints and device weight restrictions.At the same time, the demand for light weight, miniaturization, and low cost also makes such traditional technology products face the risk of being marginalized.


Therefore, how to achieve light weight, miniaturization, and low cost has become a technical problem to be solved by those skilled in the art.

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