Solenoid switch
An electromagnetic switch, electromagnetic technology, applied in electromagnetic relays, electromagnetic relay details, circuits, etc., can solve the problems of affecting the service life, poor air tightness, lack of sealing structure at the connection, etc., to improve the sealing effect.
Active Publication Date: 2010-04-14
浙江环方汽车电器有限公司
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Problems solved by technology
[0003] In some fields, such as automobile starters, the working environment of the electromagnetic switch has more water vapor. Once the airtightness of the electromagnetic switch is not good, it is easy for water vapor to enter the electromagnetic switch and affect the service life.
It can be seen that the connection between the cover plate and the shell in the above-mentioned patent lacks an effective sealing structure for sealing
Method used
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Embodiment 2
[0029] Other structures are the same as the first embodiment, the difference is that there is an annular notch on the inner surface of the sealing ring 10 . After the sealing ring 10 is under pressure, the sealing ring 10 parts on both sides of the gap can bend toward the gap, filling the gap while solving the problem that the upper sealing ring 10 is extruded from the gap between the end cover 5 and the turning edge 41 .
Embodiment 3
[0031] Other structures are the same as in the first embodiment, except that the end cap 5 is provided with an annular groove. An annular groove can be directly opened on the end cover 5 to accommodate the deformed part of the sealing ring 10 protruding toward the end cover 5 after being deformed under pressure, so as to avoid the outward protrusion of the sealing ring 10 after deformation and affect the appearance.
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The invention provides a solenoid switch, belongs to the technical field of switches, and solves the problem that an effective sealing structure is not available for sealing at the connection part between a cover plate and a shell of the current solenoid switch. The solenoid switch comprises a cannular shell and an end cover with an opening at one end, wherein the shell and the end cover are respectively internally provided with an electromagnet part and a switch part, the opening end of the end cover is inserted into the shell and is provided with a hemline protruding to the outside, the edge of one end of the shell for the insertion of the end cover is folded inwards to form a folded edge and then acts on the hemline, and a seal ring sheathed on the end cover is arranged between the folded edge and the hemline. By arranging the seal ring at the connection part between the shell and the end cover for sealing, the tightness of the solenoid switch is improved.
Description
technical field [0001] The invention belongs to the technical field of switches, and relates to a switch operated by the change of electromagnetic field, in particular to an electromagnetic switch. Background technique [0002] The electromagnetic switch is a small switch device that works by the movement of the iron core after electrification. A general electromagnetic switch is composed of an electromagnet part and a switch part, such as a kind of electromagnetic switch disclosed by a Chinese patent (its authorized announcement number is CN201252059Y), the coil support of the electromagnetic switch, the electromagnet composed of an iron core and a coil The parts are fit and installed in the shell. The switch part includes a cover plate. The inner end of the cover plate protrudes outward. The shells are fastened together. [0003] In some fields, such as automobile starters, the working environment of the electromagnetic switch has a lot of water vapor. Once the airtightn...
Claims
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IPC IPC(8): H01H50/02
Inventor 庄道建
Owner 浙江环方汽车电器有限公司