Application and structural characteristics of rota

2022-07-22
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Rotary switch can be seen almost everywhere in our life. It is widely used. It can be seen in electronic devices and kitchen and bathroom products. Take the most basic faucet switch, which is a rotary design. It can be turned on and off through rotation, and even control the size. Many people will ignore this small switch, so today I will take you to know about the purpose and structural characteristics of the rotary switch. Let's take a look at the brief introduction and analysis of the rotary switch

rotary switch can be seen almost everywhere in our life. It is widely used. It can be seen in electronic devices and kitchen and bathroom products. Take the most basic faucet switch, which is a rotary design. It can be turned on and off, and even control the size. Many people will ignore this small switch, so today I will take you to know about the purpose and structural characteristics of the rotary switch. Let's take a look at the brief introduction and analysis of the rotary switch

purpose and structural characteristics of rotary switch

1 Usage

rotary switch has many uses. Its rotating area has certain range restrictions, mainly because the resistance value plays a role in changing the contact switch. For example, the channel and volume adjustment of traditional black-and-white TV is realized by rotating the switch; The gear control of the electric fan is a rotary switch. There are several groups of outgoing lines inside. By changing the number of coils on the resistance of the winding fan, the speed of different gears can be changed; The washing and dehydration functions of washing machines are also mostly controlled by rotary switches

2. Features

the structure of rotary switch has two types, namely MBB contact type and BBM contact type. MBB contact type is that the moving contact is in contact with the front and rear contacts during transposition, and the front contact is disconnected during transposition to maintain contact with the rear contact; When the BBM contact type is transposed, the moving contact will first disconnect the front contact and then connect the rear contact. The state at that moment in the conversion process is disconnected from both the front and rear contacts

introduction and analysis of rotary switch

1 The rotary switch itself has many uses. It can also replace some rotary pulse generators. It is mainly used in the human-machine interface of the front panel of the instrument and the audio-visual control panel. The rotary switch adopts orthogonal optical encoder, which replaces the pure digital device of analog potentiometer. It is similar to traditional or resistive potentiometer in appearance, but its internal structure is completely digital and uses optical technology

2. The interior of the rotary switch is also similar to the traditional incremental encoder. There are two orthogonal output signals, channel A and channel B, which can be directly connected with the encoder processing chip. The appearance of the switch is cylindrical. Surrounding distribution “ Inside the cylinder ” The protruding terminals are “ Inside the cylinder ” The extension of the static contact, which is evenly spread and distributed in “ Inside the cylinder ”, Lay a layer one by one on the structure, and so on. Each layer is insulated from each other

3. In terms of the composition of the rotary switch, a rotating shaft is formed by threading the bottom out of the top cover to form the rotary handle, and the bottom plate and the top cover are clamped and fixed up and down to form the switch assembly. When in use, it can rotate 90 degrees, 180 degrees or 360 degrees. Each time it rotates to a position, the moving contact is connected to different static contact, and different states can be output on the external terminal, so as to realize control

editor's summary: the above is a brief analysis and introduction of the use and structural characteristics of the rotary switch, as well as the rotary switch. I hope these contents shared by the editor will be helpful to you. For more information, please continue to follow us

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