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Electromagnetic switch

A technology of electromagnetic switch and electromagnetic device, applied in electromagnetic relays, circuits, detailed information of electromagnetic relays, etc., can solve problems such as noise generation

Active Publication Date: 2008-04-23
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this vibration is transmitted to the housing, the housing itself will also vibrate, so for example the housing may come into contact with some parts, which may generate noise

Method used

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Embodiment Construction

[0105] Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

[0106] Although a packaged electromagnetic switching device in which a contact device, a fixed core, and a movable core are housed in a sealed space will be explained in the following embodiments, the present invention is obviously also applicable to a package in which a contact device, a fixed core, and a movable core Electromagnetic switching devices not housed in sealed spaces.

[0107] As shown in FIG. 1A and FIG. 1B, the electromagnetic switch device of the present embodiment has: an electromagnetic device 1; a contact device 2, which cooperates with the movement of the electromagnetic device 1 so that the contacts contact or separate from each other; and a housing 3, It is used to accommodate the electromagnetic device 1 and the contact device 2 .

[0108] As shown in FIG. 2 , the electromagnetic device 1 includes: a cylindrical coil body 10; an exci...

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PUM

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Abstract

An electromagnetic switch comprising an electromagnet unit (1) where a movable core (15) contacts a stator core (14) or separates therefrom depending on excitation of an exciting winding (11) wound around a coil bobbin (10), a contact unit (2) having a fixed contact (21) and a movable contact interlocked with movement of the movable core (15) in the electromagnet unit to contacts the fixed contact or separates therefrom, and a box-like case (3) for containing the electromagnet unit (1) and the contact unit (2). The coil bobbin (10) has a flange (10a) at the axial end of the coil bobbin, the case (3) is provided, in the inner surface thereof, with a recess (31) fitted to the circumferential edge at the flange (10a) of the coil bobbin, a buffer member (32) for absorbing impact propagating from the electromagnet unit to the case is provided in the recess (31), and the flange (10a) of the coil bobbin is supported in the recess (31) through the buffer member (32) thus holding the electromagnet unit (1) in the case (3).

Description

technical field [0001] The present invention relates to an electromagnetic switching device having an electromagnetic device located in a housing and a contact device that cooperates with the movement of the electromagnetic device to make contacts contact or separate from each other. Background technique [0002] Japanese Unexamined Patent Publication No. 11-232986 discloses an electromagnetic switch device having an electromagnetic device and a contact device in a housing. [0003] The electromagnetic switching device includes: an electromagnetic device in which a movable iron core is brought into contact with or separated from a fixed iron core in response to energization of an exciting coil wound around a bobbin; a contact device having a fixed contact and a movable contact, the movable contact The head cooperates with the movement of the movable core of the electromagnetic device to come into contact with or separate from the fixed contact; and a box-shaped case for acco...

Claims

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Application Information

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IPC IPC(8): H01H50/30H01H50/04
Inventor 粉间克哉伊东督裕久保基治山本律鱼留利一
Owner PANASONIC CORP