Rocker switches are also called rocker switches. Its structure is the same as that of the button switch, except that the button handle is changed into a ship shape. Rocker switches are used in water dispensers, treadmills, computer speakers, battery cars, motorcycles, ion TVs, coffee pots, power strips, massage machines, etc., and are mainly used in household appliances. Today, daierswitches will share with you how to judge the performance of the ship type switch? Let's find out together
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1) Selection of insulating plastics for ship-type switches
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Available thermosetting plastics - phenolic resin (PF), polydiallyl phthalate (DAP), epoxy resin (EP) and unsaturated polyester (UP). Available thermoplastics - glass fiber reinforced PET, PBT, PCT (polyethylene terephthalate), PTT (polytrimethylene terephthalate), PA6, PA66, PA6T, PA9T, PA46, PA612, PPS, LCP, PSF (polysulfone), PEI (polyetherimide), PES (polyethersulfone), PASF (polyarylsulfone), PAE (polyarylether), etc.
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For low-frequency rocker switches, mineral-filled phenolic plastics were mainly used in the past. Due to the low production efficiency, they have been replaced by new thermoplastics, specifically PA, PC, reinforced PC, and polysulfone. For ship type switches used under hot and humid conditions, use DAP data.
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rocker switch
2) The dielectric properties of the ship type switch
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The insulation resistance and dielectric strength required by the switch are high. Generally, the insulation resistance between the contacts and between the contacts and the ground should be greater than 1ฮฉ; under the low voltage of 0.44MPa, when the test voltage is 500V, arcing and breakdown should not occur. For high-frequency ship type switches, in addition to meeting the above requirements, it is best to require small high-frequency dielectric loss and small dielectric constant.
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3) Heat resistance of rocker switch
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Generally, the thermal deformation temperature should be above 200ยฐC to resist the high temperature during surface mount technology or soldering, and to withstand the heating temperature of the connector itself.
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4) arc resistance of ship type switch
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Guaranteed to resist damage to plastics caused by arcs generated during plug-in installation.
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5) Flame retardancy of ship type switch
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To prevent fires under abnormal conditions such as short circuits, and to avoid the harm of toxic gases to the human body, it is best to use halogen-free flame-retardant materials.
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