CN104576243A

CN104576243A - Electromagnetic release

Info

Publication number: CN104576243A
Application number: CN201310498722.XA
Authority: CN
Inventors: 严寒义; 胡长春; 员佳丽
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 2013-10-22
Filing date: 2013-10-22
Publication date: 2015-04-29

Abstract

The invention discloses an electromagnetic release. A permanent magnet (20) is arranged inside a housing (10); a static iron core (30) comprises a magnetic conductive terminal (32) adsorbed with the permanent magnet, and an adsorption terminal (34); a movable iron core (40) comprises a contact terminal (42) in contact with the adsorption terminal, and an actuating terminal (44); an electromagnetic coil (50) is connected with the static iron core and the movable iron core in a sleeving manner; a composite protective layer (60) is arranged on the surface of the movable iron core and comprises a metal protective layer (62) covering the surface of the movable iron core and a plastic protective layer (64) covering the metal protective layer. With double anti-corrosion protection of the metal protective layer and the plastic protective layer, the rust which can appear on the surface of the movable iron core to obstruct the motion can be avoided.

Description

Magnetictrip

Technical field

The present invention relates to a kind of magnetictrip, particularly relate to a kind of surface treated magnetictrip.

Background technology

Fig. 1 is for illustration of the structure of existing magnetictrip.As shown in the figure, the magnetictrip of existing structure comprises a shell 81, permanent magnet 83, static iron core 84, solenoid 85 and a dynamic iron core 86.Wherein, permanent magnet 83, solenoid 85 and static iron core 84 are encapsulated in shell 81.Permanent magnet 83, static iron core 84, dynamic iron core 86 are along the axially-aligned of solenoid 85, and solenoid 85 is located on static iron core 84 and dynamic iron core 86.Magnetictrip is provided with a trip positions and a reset position, and when magnetictrip is in reset position, static iron core 84 and dynamic iron core 86 are attached together; When magnetictrip is in trip positions, static iron core 84 departs from the absorption with dynamic iron core 86.Dynamic iron core 86 can move along a dropout direction relative to static iron core 84, thus realizes the trip positions of magnetictrip and the switching of reset position.

The fixed core of magnetictrip, shell and dynamic iron core are soft magnetic material and make, and are in use easily corroded and produce rust staining.Having of rust staining may hinder dynamic iron core moving along dropout direction, causes magnetictrip disabler.

Summary of the invention

The object of this invention is to provide a kind of magnetictrip, avoid rust staining to hinder the motion of dynamic iron core.

The invention provides a kind of magnetictrip, comprise a shell, a permanent magnet, a static iron core, dynamic iron core, a solenoid and a composite protection layer.Permanent magnet is arranged at shell.Static iron core has magnetic conduction end and the absorption end that is adsorbed in permanent magnet.Dynamic iron core can move relative to static iron core, dynamic iron core have one can with the absorption contact jaw of end in contact and an actuation ends.Solenoid is socketed on static iron core and dynamic iron core.The surface of dynamic iron core is provided with a composite protection layer, and this composite protection layer comprises the plastic protective layer that a coat of metal being covered in the surface of dynamic iron core and are covered in coat of metal.

In magnetictrip; first at the surface metallization protective layer of dynamic iron core; dynamic iron core effectively can be protected not to be corroded, and the fineness on its surface can be improved through the dynamic iron core of surface-coated, with being combined with coat of metal of ensureing that subsequent coated plastic protective layer can be good.By the dual anti-corrosion protection of coat of metal and plastic protective layer, the surface of dynamic iron core can be avoided to occur hindering rust staining of its motion.

In another schematic execution mode of magnetictrip, coat of metal is electro-galvanized layer.

In the schematic execution mode of the another kind of magnetictrip, plastic protective layer is the Teflon layer of electrophoretic coating.

In another schematic execution mode of magnetictrip, the surface coverage of shell and static iron core has composite protection layer.

Accompanying drawing explanation

The following drawings only schematically illustrates the present invention and explains, not delimit the scope of the invention.

Fig. 1 is for illustration of the structure of existing magnetictrip.

Fig. 2 is for illustration of the structural representation of a kind of exemplary embodiment of magnetictrip.

Fig. 3 is for illustration of the structure of composite protection layer.

Label declaration

10 shells

20 permanent magnets

30 static iron cores

32 magnetic conduction ends

34 absorption ends

40 dynamic iron cores

42 contact jaws

44 actuation ends

50 solenoids

60 meet protective layer

62 coat of metals

64 plastic protective layers.

Embodiment

In order to the technical characteristic to invention, object and effect have understanding clearly, now contrast accompanying drawing and the specific embodiment of the present invention is described, label identical in the various figures represents identical part.

In this article, " schematically " expression " serves as example, example or explanation ", not should by being described to any diagram of " schematically " in this article, execution mode is interpreted as a kind of preferred or have more the technical scheme of advantage.

For making simplified form, only schematically show part related to the present invention in each figure, they do not represent its practical structures as product.In addition, be convenient to make simplified form understand, there are the parts of same structure or function in some figure, only schematically depict one of them, or only marked one of them.

In this article, " on ", D score, "front", "rear", "left", "right" etc. only for representing the position relationship between relevant portion, and their absolute position non-limiting.

Fig. 2 is for illustration of the structural representation of a kind of exemplary embodiment of magnetictrip.As shown in the figure, magnetictrip comprises a shell 10, permanent magnet 20, static iron core 30, dynamic iron core 40 and a solenoid 50.

Wherein, shell 10 can by wherein accommodating to permanent magnet 20, static iron core 30, dynamic iron core 40 and solenoid 50.Permanent magnet 20 is arranged in shell 10.

Static iron core 30 has a magnetic conduction end 32 and an absorption end 34.Magnetic conduction end 32 can magnetic absorption in permanent magnet 20.Dynamic iron core 40 has a contact jaw 42 and an actuation ends 44.Contact jaw 42 can magnetic absorption in absorption end 34, and actuation ends 44 can pass shell 10 by actuation aperture 142.Dynamic iron core 40 relative to static iron core 30, can move between a reset position and a trip positions.When magnetictrip is in reset position, the absorption end 34 of static iron core 30 is attached together with the contact jaw 42 of dynamic iron core 40; When magnetictrip is in trip positions, the absorption end 34 of static iron core departs from the absorption with the contact jaw 42 of dynamic iron core 40.By the motion of dynamic iron core 40 between reset position and trip positions, the length making actuation ends 44 stretch out actuation aperture 142 changes.

Solenoid 50 is socketed on static iron core 30 and dynamic iron core 40.As shown in the figure, permanent magnet 20, static iron core 30 and dynamic iron core 40 are respectively along the axially-aligned of solenoid 50.

Fig. 3 is for illustration of the structure of composite protection layer, and Fig. 3 is the partial enlarged drawing of part A in Fig. 2.See Fig. 2 and Fig. 3, the surface of dynamic iron core 40 is provided with a composite protection layer 60.Composite protection layer 60 comprises a coat of metal 62 and a plastic protective layer 64.The surface of dynamic iron core 40 is first covered by coat of metal 62, is then covered in coat of metal 62 by plastic protective layer 64 again.In a kind of exemplary embodiment of magnetictrip, coat of metal 62 is metal zinc layers, and is coated on the surface of dynamic iron core 40 by electroplating technology, and metal zinc layers has good resistance to corrosion, and the surface of dynamic iron core can be protected not to be corroded.Plastic protective layer 64 is Teflon layer, and is coated on metal zinc layers by electric capacity enamelling process, and Teflon has antiacid alkali resistant, anti-various organic solvent and high temperature resistant, and coefficient of friction is extremely low, can ensure the motion that dynamic iron core is level and smooth.In other execution modes of magnetictrip, other erosion-resisting metal levels can be used to carry out alternative metals zinc layers, and use other plastics to substitute Teflon.In addition, coat of metal and plastic protective layer also can by other surface coating technology applications.

In a kind of exemplary embodiment of magnetictrip; the surface of shell 10 and static iron core 30 is also coated with composite protection layer; namely the surface of shell 10 and static iron core 30 first covers a coat of metal, then on coat of metal, covers a plastic protective layer again.By at shell 10 and static iron core external coating composite protection layer, more effectively can avoid rust staining and cause dynamic iron core to move freely, thus improving the reliability of magnetictrip function further.

Be to be understood that, although this specification describes according to each embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.

A series of detailed description listed is above only illustrating for possible embodiments of the present invention; they are also not used to limit the scope of the invention; allly do not depart from the skill of the present invention equivalent embodiments done of spirit or change; as the combination of feature, segmentation or repetition, all should be included within protection scope of the present invention.

Claims

1. magnetictrip, it comprises:

A shell (10);

A permanent magnet (20) being arranged at described shell (10);

A static iron core (30), it has the magnetic conduction end (32) that is adsorbed in described permanent magnet (20), and absorption end (34); A dynamic iron core (40) that can move relative to described static iron core (30), it has one can adsorb with described the contact jaw (42) holding (34) to contact, and an actuation ends (44); With

A solenoid (50) being socketed on described static iron core (30) and described dynamic iron core (40),

It is characterized in that the surface of described dynamic iron core (40) is provided with a composite protection layer (60); this composite protection layer (60) comprises the coat of metal (62) that is covered in the surface of described dynamic iron core (40), and a plastic protective layer (64) being covered in described coat of metal (62).

2. magnetictrip as claimed in claim 1, wherein said coat of metal is electro-galvanized layer.

3. magnetictrip as claimed in claim 1, wherein said plastic protective layer is the Teflon layer of electrophoretic coating.

4. magnetictrip as claimed in claim 1, the surface coverage of wherein said shell (10) and described static iron core (30) has described composite protection layer (60).