Key Emergency Stop Mushroom Button Switch- China Manufacturers Factory Suppliers

A rotor on which a moving contact is attached is received and rotatably held in a body, and a knob is received and held in the body side by side with the rotor and is movable. A plurality of first and second teeth are circumferentially staggered with each other on an outer perimeter surface of the rotor near one end and near the other end, respectively, in the direction of the axis of the rotor to project from the surface. An inclined surface is formed in each of the first and second teeth. A projecting part is formed on the knob to project toward the rotor. In response to a depression of the knob, the projecting part pushes the inclined surface of the second teeth to rotate the rotor and, in response to a return of the knob, pushes the inclined surface of the first teeth to rotate the rotor.

The invention provides a push-button switch including: a star wheel which is rotated by a constant angular step in one direction by a depression of a push button that automatically returns; an indenter which is pressed against the outer periphery of the star wheel by a spring; a contact  which is attached so as to corotate with the star wheel, and which serves as a movable contact; and terminals with which the contact is contacted in accordance with a rotation angle, and which serve as stationary contacts. A small projection  having a rounded tip end is disposed in each of ridge portions of the star wheel. Even when the slope of each ridge portion does not have a large inclination angle, the star wheel is prevented from being stopped at a position where the ridge portion is opposed to the indenter.

Classified according to the purpose and structure of the contact 

(1) Normally open button 

(2) Normally closed button 

(3) Compound button classified according to operation mode and protection mode Buttons can be classified according to operation mode and protection mode, common button categories and characteristics: 

(1) Open type: suitable for embedded and fixed on the panel of switch board, control cabinet or console. 

(2) Protective type: with a protective shell, which can prevent the internal button parts from being mechanically damaged or people touching the live parts. 

(3) Waterproof type: with a sealed shell, which can prevent rainwater from intruding. 

(4) Anti-corrosion type: it can prevent the intrusion of chemical corrosive gases. 

(5) Explosion-proof type: It can be used in places containing explosive gas and dust without causing explosion transmission, such as coal mines and other places. 

(6) Illuminated button: There is a signal light inside the button, which is not only used to issue operation commands, but also serves as a signal indicator, and is mostly used on the panels of control cabinets and consoles. 

(7) Key type: Insert and rotate with a key to operate, which can prevent  be operated by a special person. 

(8) Emergency type: There is a big red mushroom button protruding outside, which is used to cut off the power supply in case of emergency.

(9) Self-holding button: The button is equipped with a self-holding electromagnetic mechanism, which is mainly used in power plants, substations or test equipment. Operators communicate with each other and issue instructions, etc., and are generally panel-operated. 

(10) Knob type: The contact is operated by rotating the handle, with two positions of on-off, generally panel-mounted.

(11) Combined type: combination of multiple buttons. (12) Interlocking type: Multiple contacts interlock with each other. Code-named off, on.

The main technical parameters

Switch rating: ac-15 36v/10a 110v/10a 220v/5a 380v/2.7a 660v/1.8a dc-13 24v/4a 48v/4a 110v/2a 220v/1a 440v/0.6a 

Conventional thermal current: 1th 10a 

Electric shock Resistance: ≤50mΩ 

Insulation resistance: ≥10mΩ 

Mechanical life: general button n≥100×10 times; knob ≥30×10 times. 

Key button n≥5×10 times; emergency stop button ≥5×10 times

Button (button) is a commonly used control electrical component. It is a switch used to control certain functions of machinery or programs, or to turn on and off control circuits, so as to achieve the purpose of controlling the operation of motors or other electrical equipment. Generally speaking, the red button is used to stop a certain function, while the green button is to start a certain function.

Some new applications of push button switches include:

Smart home devices: Push button switches can be integrated into smart home devices to control lighting, appliances, and other electronic devices.

Medical equipment: Push button switches are used in various medical equipment such as patient monitors, ventilators, and infusion pumps.

Industrial automation: Push button switches are used in industrial automation systems to control machinery and equipment.

Automotive: Push button switches are used in automotive applications such as power windows, power door locks, and engine start/stop buttons.

Push button switch factories are mainly located in the coastal areas of China, particularly in the provinces of Guangdong, Zhejiang, and Jiangsu. These provinces have a strong manufacturing base and are home to many electronics and electrical components manufacturers.

The key switch is a component widely used in electronic equipment, and China is one of the important bases of the global key switch manufacturing industry. Key switch factories are mainly distributed in the following places:

Dongguan City, Guangdong Province: Dongguan City is one of the regions with the most developed key switch industry in China, and has a large number of key switch manufacturers and supporting enterprises.

Wenzhou City, Zhejiang Province: The key switch industry in Wenzhou City started earlier and has a relatively complete industrial chain. Among them, key switch enterprises represented by GQEM enjoy a high reputation in the industry.

Suzhou City, Jiangsu Province: Suzhou City is one of the important bases of China's electronic information industry, and has a group of professional key switch enterprises.

Shenzhen, Guangdong Province: Shenzhen is the center of the global electronic information industry and has a large number of electronic component manufacturers, including key switch manufacturers.

In addition to the above-mentioned regions, there are also many key switch manufacturers in Jiangsu, Zhejiang and Shanghai, Fujian Province, Shandong Province and other places.