CN101218655B

CN101218655B - Electromagnetic trip device for an electrical installation device

Info

Publication number: CN101218655B
Application number: CN200680014408.8A
Authority: CN
Inventors: J·克里斯特曼; K·-P·埃佩; P·普菲尔曼; R·韦伯; A·奥本
Original assignee: ABB Patent GmbH
Current assignee: ABB Patent GmbH
Priority date: 2005-04-30
Filing date: 2006-04-25
Publication date: 2012-12-26
Anticipated expiration: 2026-04-25
Also published as: WO2006117097A2; DE102005020167A1; WO2006117097A3; EP1878037A2; CN101218655A

Abstract

The invention relates to an electromagnetic trip device, in particular for a circuit breaker, and a contact point, comprising a yoke, a coil, a magnetic core and a magnetic armature. In the event of a short circuit current, the inventive trip device acts upon a movable contact lever for directly opening the contact point and upon a switch latch for permanently opening said contact point. The yoke and the magnetic core are configured as a single-piece, U-shaped bent punched part, the first limb of which serves as a magnetic core.

Description

The electro-magnetic circuit breaker that is used for electrical installation device

The present invention relates to a kind of electrical installation device that is used for, in particular for the electro-magnetic circuit breaker of line protection switch.

Line protection switch has electromagnetism and circuit breaker temperature-sensitive, thermal cut-out wherein when overcurrent occurring and electro-magnetic circuit breaker when short circuit current occurring, help the cut-off switch device.Junction within the latching device that thermal cut-out only acts on contact lever movably links to each other is so that its release, and electro-magnetic circuit breaker then directly breaks off contact lever through impacting when short circuit current occurring; Electro-magnetic circuit breaker is also operated latching device simultaneously, so that make switching device keep breaking off.

Electro-magnetic circuit breaker has the crooked yoke of trend box-shaped usually, and it comprises coil, magnetic armature and magnetic core, and wherein, magnetic armature and magnetic core are contained in the inside of coil case; Magnetic core is installed on the yoke arm as revolving meber independently at this, and it faces contact lever, so that when short circuit current occurring, utilize magnetic core that armature is drawn in coil inside, so that can make striker act on contact lever.

This electro-magnetic circuit breaker uses on the S2 switch of Heidelberg (ABB Stotz Kontakt Co., Ltd, Heidelberg) at ABB Stotz Kontakt GmbH.

The objective of the invention is to, simplify the electro-magnetic circuit breaker of the said type of beginning.

This purpose is achieved according to the present invention thus, and promptly yoke and core configurations are the whole crooked stamping parts of U-shaped, and the first arm of this stamping parts uses as magnetic core.

In known structure, magnetic core constitutes through the revolving meber of itself, and the magnetic core with yoke then forms the integrated member that can in one procedure, make.

According to a kind of structural scheme of the present invention, arm can use as magnetic core without a doubt, thereby has cancelled the magnetic core of compacting.

According to another kind of structural scheme of the present invention, the first arm that uses as magnetic core is provided with the indentation portion towards another arm, and this indentation portion has the hole, is used to guide the switch lever that is connected with armature; Magnetic core forms through the depressed part in the first arm thus.

Replace this depressed part, also recess or bend can be set, it is outstanding to another arm abreast with the brace of yoke according to claim 4.Molded on this free end that is configured in the first arm.

Wherein bend can be a U-shaped, and wherein, the brace of U-shaped portion and yoke brace extend and the arm of bend and yoke brace projection vertically abreast; According to another kind of execution mode, bend is provided with end plate towards the end of another arm, and is porose in this end plate, and striker passes this hole and inside is directed.

In the structural scheme of no end plate, back-moving spring can embed in the zone between the arm of bend, thereby arm portion ground surrounds back-moving spring; In another embodiment, back-moving spring is between first section of striker and the ladder and end plate between second section.

Especially in last execution mode, can be provided with coil pipe, its internal diameter is equivalent to the external diameter of end plate and is used to guide the armature with striker.

Structure that other are favourable and improvement project are consulted other dependent claims.

Description of drawings

Other structure and improvement and other advantages with advantage describe in detail and explain to the present invention and the present invention by the accompanying drawing that the several embodiment of the present invention are shown below.Wherein:

Fig. 1 and 2 illustrates not two kinds of different embodiment of electro-magnetic circuit breaker of belt coil;

Fig. 3-6 illustrates the different execution modes of yoke; And

Fig. 7 and 8 illustrates the armature different embodiment with striker.

At first with reference to Fig. 5.

Electro-magnetic circuit breaker is made up of yoke, coil, armature and magnetic core as stated, wherein, is connected with striker with armature, and this striker directly acts on the contact lever of electric wiring protection switch.

Fig. 5 illustrates first execution mode according to yoke 10 of the present invention.This yoke has yoke brace 11, is molded with two

yoke arms

12 and 13 in the above, and wherein,

yoke arm

12,13 and yoke brace form U-shaped jointly.

In the execution mode of Fig. 5, the first arm 12 uses as magnetic core, wherein, has hole 14 in the arm 12, and striker (continuing referring to following) can pass from this hole.Another arm 13 has circle and lacks v notch v 15, as following also to introduce, this breach supporting and guiding armature.

Have V-arrangement recess 16 on the yoke brace 11, it has the surface 17 as the fixed contact use of line protection switch.This recess itself as fixed contact on yoke is a prior art and unimportant for the present invention.

The first arm 12 of yoke 10 uses as magnetic core under the situation of not having other measures; In the execution mode of Fig. 6; Be on the yoke brace 11 corresponding yoke braces 11 with Fig. 5 is the first arm 18 and corresponding to second arm of arm 13; This second arm has Reference numeral 13 equally, to show the something in common with Fig. 5 execution mode.

The first arm 18 roughly has the indentation portion 19 of jar shape therein in the heart, and its bottom 20 is towards arm 13 and outstanding to second arm 13 from the inner surface of the first arm 18.Jar end 20, have hole 21, and the striker of the corresponding and armature in itself and hole 14 is from wherein passing.Depressed part 19 produces through deep-draw technology.

Fig. 3 illustrates another embodiment of the present invention.Yoke 30 have the first arm 31 and with arm 13 corresponding second arms 32 of Fig. 5 and 6.In addition, have recess 16 corresponding recesses 34 with Fig. 5 on the yoke brace 33.

The bend 35 that has U-shaped on the first arm 31, its bend brace 36 extends with yoke brace 33 abreast.On bend brace 36, be molded with

bend arm

37,38, their same and bend braces 36 vertical and so also vertically extend with yoke brace 33, equally and

yoke arm

31 and 32 vertically extend; They are outstanding on the direction identical with

yoke arm

31 and 32.

The inner space 39 of U-shaped is used for guide switch pin (continuing referring to following) and back-moving spring (continuing referring to following equally).

Fig. 4 illustrates U-shaped yoke 40, has yoke brace 41, is molded with the first yoke arm 42 and the second yoke arm 43 in the above.Being between the first yoke arm and the yoke brace 41 is V-arrangement molded part 44, and itself and molded part 16 are corresponding and fixing contact is installed in the above.

In the execution mode of Fig. 3; With the same at the structure of Fig. 5 and 6; The

first arm

31,12,18 directly is close to adjacent yoke ora terminalis; And in the execution mode of Fig. 4, the first arm only is connected through bend or recess 44 with the yoke brace, thereby between the first yoke arm 42 and yoke brace 41, remains with the gap.

The free end of the first yoke arm has bend 45, and this bend has two

arms

46 and 47, and they are connected with the brace section 48 that can only partly see; Being on

arm

46 and 47 ora terminalis is end plate 49, and it is connected with brace section 48 or perpendicular to brace section 48 molded above that.This end plate 49 has through hole 50, at the striker of its inside guiding electromagnetism armature.

The structural scheme of Fig. 3-6 illustrates the direct in the above molded yoke of a kind of magnetic armature.

Fig. 1-6 illustrates the different shaping and the structural scheme of yoke; Certainly also have this possibility, promptly yoke has the bend that is used to form fixed contact according to Fig. 2, and yoke constitutes as Fig. 5 is perhaps shown in Figure 6 to the yoke arm according to Fig. 4.The execution mode of yoke arm 49 with bend 44 is opposite to be replaced this structure and also can use recess, in Fig. 3, adopt shown in the reference numeral 34.

Thus, can make up simply each other by the structure that each is different.

Consult Fig. 7 now.

This illustrates magnetic armature 70, and it has striker 71, and striker has two first section 72 and second sections 73 that diameter is different.Be provided with the sheet material spare 74 that permeability magnetic material is processed around first section 72, it is only partly around first section 72.On the two ends of first section 72, be molded with radially outstanding around

lath

75 and 76, its external diameter is equivalent to be set with first section of sheet material spare 74, thus sheet material spare 74 fixedly secures on first section.First section is additional to have the indentation portion 77 of on axial direction, extending, thereby sheet material spare 74 is fixed on first section 72.

In the execution mode of Fig. 8, striker 80 has two first section 81 and second sections 82 that diameter is different.First section 81 is surrounded by sheet material pipe 83, and armature is processed and therefore formed to this sheet material pipe by the good material of magnetic property.Second section is the same with the section 73 of execution mode shown in Figure 7, directly acts on the movably contact of the line protection switch that electro-magnetic circuit breaker is housed in it or movably on the contact lever.

The execution mode of Fig. 1 shows the yoke 30 with armature shown in Figure 7; Striker 73 stretches out and is in from the first yoke arm 31 between the backstop in lath 75 and two

arms

37 and 38 zones is back-moving spring 90; This back-moving spring turns back to its original position with armature again after opening circuit, or utilizes this back-moving spring can adjust the release property of circuit breaker.

In the execution mode of Fig. 3; Use has the yoke 40 of end plate 49 as yoke; Armature has striker 80 and first section 81 and second section 82 and a columniform sheet material spare 83 according to shown in Figure 8, its process by permeability magnetic material and therefore with the striker 80 common armatures that form; Be in first section of end plate 49 and striker 80 and between the stage between second section be and back-moving spring 90 corresponding back-moving springs 91.

Magnetic armature and back-moving spring 91 jointly by coil pipe 92 around, it is directed in vacancy 15 (referring to Fig. 1), and its internal diameter is equivalent to the external diameter of exterior contour 49a of the circular portion of end plate.

In all execution modes, the light-duty arc quenching plate of distributing to circuit breaker is in the zone of outer surface of yoke brace; The free arm of yoke is outstanding towards the front of line protection switch.

Claims

1. electro-magnetic circuit breaker is used for the contact site, and said electro-magnetic circuit breaker has yoke, coil, magnetic core and magnetic armature; This magnetic armature acts on movably contact lever realizing direct disconnection when short circuit current occurring, and acts on latching device and be used for keeping in touch the position and break off, and it is characterized in that; Yoke and core configurations are the whole crooked stamping parts of U-shaped, and its first arm is used as magnetic core, wherein; Be connected with striker with magnetic armature, striker has columniform first section and columniform second section, wherein; Said first section is compared with said second section has bigger diameter, and

The sheet material spare of being processed by permeability magnetic material is provided with around first section, wherein

It is isometric that sheet material spare surrounds first section and length in a longitudinal direction and said first section on ground, circumferential direction top,

Perhaps,

Sheet material spare on circumferential direction, fully surround first section and in a longitudinal direction length greater than the length of said first section,

Thereby, form magnetic armature by said sheet material spare.

2. by the described electro-magnetic circuit breaker of claim 1; It is characterized in that; The first arm that has formed magnetic core is provided with the indentation portion towards another arm; This indentation portion has and is used to the hole that guides magnetic armature and/or be used to guide the striker that links to each other with magnetic armature, and this striker acts directly on movably on the contact lever.

3. by the described electro-magnetic circuit breaker of claim 1, it is characterized in that, be molded with recess or bend on the first arm, its brace with yoke is given prominence to another arm abreast.

4. by the described electro-magnetic circuit breaker of claim 3, it is characterized in that structure for curvature section becomes U-shaped, wherein, bend brace and yoke brace extend abreast, and the open side of bend deviates from the yoke brace.

5. by the described electro-magnetic circuit breaker of claim 4; It is characterized in that; In the face of having end plate on the end of another arm, this end plate and bend brace vertically extend and have covered the bend arm bend at it, and have the passage of the striker that is used for linking to each other with magnetic armature.