CN1398416A

CN1398416A - Method for producing electromagnetic switchgear, E.G. Contactor

Info

Publication number: CN1398416A
Application number: CN01804544A
Authority: CN
Inventors: 马库斯·迈耶
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 2000-02-08
Filing date: 2001-01-29
Publication date: 2003-02-19
Also published as: DE10005461A1; DE10005461C2; EP1254471B1; EP1254471A1; WO2001059795A1; DE50101763D1

Abstract

The invention relates to an electromagnetic switchgear comprising at least one pair of contacts which can move in relation to each other (2, 3). An indicator element (1,6) is firmly connected to each of the contacts (2, 3). One (6) of the indicator elements (1, 6) is provided with a marking (11) which co-operates with a marking (12) on another indicator element (1). According to the invention, said marking (11) is applied to the indicator element (6) after the indicator elements (1,6) have been connected to the contacts (2,3).

Description

Be used to make the method for electromagentic switching apparatus, for example contactor

The present invention relates to a kind of be used to make electromagentic switching apparatus, for example contactor, especially the method for vacuum contactor, this switching device has at least one pair of relatively-movable contact, wherein, there are an indicator elment and each contact to be rigidly connected respectively, wherein, be provided with a mark (Markierung) on one in these indicator elments, this mark concurs with the mark that is placed on another indicator elment.

The contact of electromagentic switching apparatus is in operation and suffers contact burning, and this contact burning may be relevant with service condition.If contact burning is too serious, then must change contact.

It is impossible directly obtaining contact burning, and against vacuum contactor especially is because the against vacuum probe of contactor is arranged on sightless vacuum tube the inside.

In order in time to understand contact wearing and tearing, known in the prior art several different methods.

For example known for air contactor, under the situation of actuating switching device, remove enclosing cover later on by gauge measurement clearance size.If gap size does not surpass, then must change contact.

Known in the specification " switch block of contactor 3TF: durable and firm " of against vacuum contactor by Siemens Company, two plastic components that strutted mutually by a stage clip are pressed together when contact moves.The part of this plastic components is by outstanding in the contactor.Can infer the contact burning situation according to the size that retains the gap between two plastic components.

Known in addition, against vacuum pipe contactor is furnished with a double-colored tappet, and this tappet is by outstanding in the contactor.If color indicia disappears in the contactor the inside when contactor moves, then must change contact apparatus.In this solution, need to adjust the position of tappet, so that eliminate the error that is produced and realize enough accurate indication with respect to contactor.

By the also known this switching device of Germany Patent document DE 198 14 397 C1.For this switching device, need not it is just dismantled and can see mark and mark from the operating side, can judge wearing and tearing and on off state at this relative position by mark and mark.In order to guarantee normally to make indication, need carry out pre-adjustment each other and on indicator elment, make mark in addition indicator elment.

Maximum permission contact burning is small comparatively speaking.It is positioned in several millimeters the scope.Therefore need accurately indication, so that can infer that an excessive contact burning is arranged with enough reliabilities.

The objective of the invention is, realize enough accurate indication with simple measure.

Purpose of the present invention realizes therefrom, only indicator elment with just mark is installed on one of them indicator elment after contact is connected.

Therefore can irrespectively accurately determine the position of mark with rigging error, and need not to adjust afterwards with respect to mark.

Another indicator elment can have mark in advance.This mark for example can be a projection or a seamed edge.But preferably also indicator elment with just mark is arranged on another indicator elment after contact is connected.Guarantee mark and the mutual accurate in locating of mark with simple especially method thus.

Under the simplest situation, mark and mark are located each other like this, and they are pulled together as the wearing and tearing indication.

Be more preferably,, they pulled together as the state of wear indication and/or as the wear measurement device if design mark and/or mark like this.

If make mark, also comprise and make mark in case of necessity, then can obtain accurate and anti abrasive mark or mark with simple especially method by laser-induced thermal etching.

If mark and mark are located like this, make it need not to dismantle switching device and just can see, then can find out the position of mark easily from the outside with respect to mark.

If switching device has installed surface, switching device can be fixed on the fixed part by this installed surface, and mark and mark are installed on the aspectant front end face of installation, then can make the visuality of location easier.

By the description of embodiment of the present invention being provided other advantage of the present invention and details below in conjunction with accompanying drawing.In the accompanying drawing:

Fig. 1 is the cross-sectional view of contactor;

Fig. 2 is the front view of Fig. 1 contactor;

Fig. 3 is the contactor shown in Figure 1 before settling mark and mark;

Fig. 4 represents engraving method.

According to Fig. 1, an electromagentic switching apparatus for example is designed to contactor.This contactor has a housing 1, in the housing the inside three pairs of contacts is set.Therefore can connect a three phase mains by this contactor.A pair of contact only is shown in Fig. 1.This has a fixed contact 2 and a moving contact 3 to contact.This fixed contact 2 immovably is provided with respect to housing 1.3 of moving contacts are movably with respect to housing 1 and with respect to fixed contact 2.This point is represented by arrow A in Fig. 1.

According to Fig. 1, contact 2,3 is arranged in the vacuum tube 4.So this contactor is designed to a vacuum contactor.

Contact 2,3 has contact contact-making surface 5.This contact contact-making surface 5 is subjected to scaling loss when contact 2,3 disconnects and be closed.

In order to determine the actual scaling loss that takes place simply, indicator elment and contact 2,3 are rigidly connected.At this, attaching troops to a unit directly is made of housing 1 in the indicator elment of fixed contact 2, is designed to an indicating arm 6 and attach troops to a unit in the indicator elment of moving contact 3.Not only housing 1 but also indicating arm 6 all are made of plastics.

As shown in Figure 1, contactor has an installed surface 7.Contactor can be fixed on the fixed part 8 by this installed surface 7.Simplification illustrates as Fig. 1, and fixed part 8 is designed to the hat guide rail.One by spring-loading interlocking fixture 9 and contactor phase configuration, by this interlocking fixture 9 contactor 1 and hat guide rail 8 is interlocked.Can pull down contactor from hat guide rail 8 by move interlocking fixture 9 along the arrow B direction.

Obviously as seen, indicating arm 6 is charged into a perforate 10 ' on the front end face 10 that is arranged in installed surface 7 opposites, therefore can see indicating arm 6 from the front.A mark 11 and mark 12 are set on this front end face 10, also will be described in detail below in conjunction with Fig. 2 about this point.But it has been seen in that by Fig. 1, need not to dismantle contactor and just can see mark 11 and mark 12 from front end face 10.

As shown in Figure 2, mark 11 is arranged on the front end of indicating arm 6, and mark 12 is arranged on the front end face 10 of housing 1.In addition as can be seen, mark 11 is made of the horizontal scale line.And mark 12 is made up of the triangle of three graduation marks or a graduation mark and a downward contraction.

Mark 11 is located like this with mark 12, makes mark 11 be positioned at when contactor does not move on the high scale line height of mark 12.Mark 11 is between the middle graduation mark of mark 12 and following graduation mark or be positioned at the trigonum of mark 12 when contactor moves.Representing that near near near the time middle graduation mark of mark 12 or the wide district at triangle contact contact-making surface 5 does not almost have loss.When the most advanced and sophisticated place of triangle of the following graduation mark of mark 12 or mark 12, represent that then contact contact-making surface 5 almost exhausts.Therefore can know with respect to the position of mark 12 according to mark 11 whether contactor moves and whether contact contact-making surface 5 is depleted and may to what extent be depleted.Therefore, mark 11 and mark 12 not only play the effect of wearing and tearing indications but also play effect as on off state indication and wear measurement device.

In addition as seen from Figure 2, there are three this indications of forming by mark 11 and mark 12.It is right in a contact that does not illustrate in Fig. 2 that each indication is attached troops to a unit respectively.But can be especially significantly by finding out among Fig. 2, mark 11 and mark 12 are arranged on the front end face 10 and need not to dismantle contactor just can be seen.

Fig. 3 simply illustrates and fits together later contactor fully.Contactor has had the function of electrical connection aspect fully in this state.In addition, housing 1 is rigidly connected with fixed contact 2.Indicating arm 6 also has been placed in housing 1 the inside and has been rigidly connected with moving contact 3.And also do not settle mark 11 and mark 12 this moment.That is, only after finishing, the whole assemblings of contactor just mark 11 and mark 12 are placed on the indicator elment 1,6.

As shown in Figure 4, this point realizes by the laser 13 of launching laser beam 14.Laser beam 14 can be cut off by a closable diaphragm.Can be positioned on the front end face 10 of contactor by reflector apparatus 16,17 laser beams 14.Therefore can after the contactor assembling finishes, mark 11 and mark 12 accurate positionings ground be made on housing 1 and indicating arm 6 by the corresponding coordination control of diaphragm 15 and reflector apparatus 16,17.That is, mark 11 and mark 12 after finishing, are made on indicator elment 1,6 by the laser-induced thermal etching method in the contactor assembling.

Claims

1. one kind is used to make electromagentic switching apparatus, contactor for example, especially the method for vacuum contactor, this switching device has at least one pair of relatively-movable contact (2,3), wherein, one indicator elment (1 is arranged respectively, 6) be rigidly connected with each contact (2,3), at these indicator elments (1,6) one (6) in are provided with a mark (11), this mark concurs with the mark (12) that is located on another indicator elment (1), it is characterized in that described mark (11) is only at indicator elment (1,6) with after contact (2, the 3) connection just install on the indicator elment (6).

2. manufacture method as claimed in claim 1 is characterized in that, described mark (12) is also only just installed on the indicator elment (1) after indicator elment (1,6) and contact (2,3) connect.

3. manufacture method as claimed in claim 1 or 2 is characterized in that, described mark (11) and mark (12) be the location mutually, indicates as wearing and tearing with collaborative.

4. as the described manufacture method of claim 1,2 or 3, it is characterized in that described mark (11) and/or mark (12) are configured to, and can work in coordination with as the wear measurement device and/or as on off state and indicate

5. as the described manufacture method of above-mentioned each claim, it is characterized in that, install described mark (11), also comprise mark (12) in case of necessity by laser ablation.

6. as the described manufacture method of above-mentioned each claim, it is characterized in that described mark (11) and mark (12) are positioned to, and need not to dismantle switching device and just can be seen.

7. manufacture method as claimed in claim 6, it is characterized in that, described switching device has installed surface (7), switching device can be fixed on the fixed part (8) by this installed surface, and mark (11) and mark (12) is arranged on the front end face (10) on installed surface (7) opposite.

8. the electromagentic switching apparatus of making by the described manufacture method of above-mentioned each claim.