Anti-icing starter solenoid switch with icing concentration area

Abstract

The invention relates to an anti-icing starter electromagnetic switch with an icing concentrated area, and the switch is characterized in that the central part of a moving contact piece is provided with a through hole; the lower end of the moving contact rod passes through the through hole of the moving contact piece, and prevents the moving contact piece from being separated from the moving contact rod through the limiting of a clamp spring; the moving contact rod between an annular limiting boss and the moving contact piece is sleeved by a compression spring; a static contact consists of screws and heat radiators disposed at the top of the screws; the lower surfaces of two ends of the moving contact piece are corresponding to the upper surface of the corresponding heat radiators. The switch solves a problem that a starter cannot start normally because of the icing of a switch contact, is simple in structure, is small in size, is reliable for use, and is wide in application range.

Description

technical field [0001] The invention relates to a starter electromagnetic switch for a vehicle, in particular to an anti-icing starter electromagnetic switch with an icing concentration area. Background technique [0002] The traditional starter electromagnetic switch consists of a housing, a static contact seat located at the bottom of the housing, two static contacts located in the static contact seat, a ring support limit seat fixed above the static contact seat, and a ring support The moving contact rod in the center of the limit seat, the moving contact sheet fixed on the lower end of the moving contact rod and perpendicular to the moving contact rod, the return spring arranged between the lower end of the moving contact rod and the bottom surface of the static contact seat, is set on The sleeve on the outer periphery of the upper part of the annular support limit seat, the electromagnetic coil arranged in the annular space formed by the sleeve and the casing, the movin...

AI Technical Summary

Problems solved by technology

When the electromagnetic coil is charged, the moving iron core moves down, thereby driving the moving contact rod and the moving contact piece to move down, so that the two ends of the moving contact piece are respectively connected with the two static contacts to conduct current, but there are the following problems: when the electromagnetic The temperature outside the switch drops, and the heat begins to lose from the switch casing. The material of the two T-bolts as the static contact is metal, so the heat loss is faster than the surrounding plastic static contact seat, and the temperature is earlier than other When the component drops below 0°C, the water vapor inside the switch will first condense into ice on the contact area of ​​the two static contact surfaces, and the electromagnetic switch with frozen contacts cannot conduct the circuit, and the starter cannot start normally

However, the two sets of contact mechanisms introduce new problems: complex structure, high cost, and large volume

However, this solution also has shortcomings: because the coil spring contact has an ablation every time the switch is turned on, the upper end of the spring is almost the same as the height of the static contact after being consumed by multiple ablation. Unreliable protection against icing at end of life

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