CN1136597C

CN1136597C - Electromagnetic switching device

Info

Publication number: CN1136597C
Application number: CNB99103466XA
Authority: CN
Inventors: 鲁道夫・肖尔茨; 鲁道夫·肖尔茨; 尔・朗; 福尔克尔·朗; ・约根斯; 斯特凡·约根斯; ・塔尔; 拉尔夫·塔尔
Original assignee: Kloeckner Moeller GmbH
Current assignee: Eaton Industries GmbH
Priority date: 1998-03-31
Filing date: 1999-03-30
Publication date: 2004-01-28
Anticipated expiration: 2019-03-30
Also published as: EP0948017A3; DE19814399C1; CN1233845A; EP0948017B1; HK1021773A1; EP0948017A2

Abstract

An electromagnetic switch device has an armature (1) beneath a suspension slot (122) towards a magnetic core, and hooked extensions (121) are provided on two opposite sides of the armature, at least a retaining strap (2) encloses the hooked extensions (121) on each side of the two opposite sides, while warped hooked ends (21) are suspended in the suspension slot, so that the armature can suspense on at least two opposite retaining straps (2), and a clamping element (7) is arranged on upper face (19) of the armature back to the magnetic core. The other warped fixing end (22) of the retaining strap is provided on clamping elements (5, 7), on which the retaining strap is fixed.

Description

Electromagentic switching apparatus

The present invention relates to have the electromagentic switching apparatus of a magnetic core and an armature that is connected with clamping element.

Known various fixed electromagentic switching apparatus armature structure.A kind of wide-spread armature fixing means is, the axle or the pin that partly connect with stationary housing pass armature in the centre, such as in DE3303648C2, illustrating.The method of another kind of fixed armature is to catch the U-shaped bend piece of armature to fix in the centre by means of one, that is to say, in this method, armature inserts in the U-shaped bend piece, such as in DE-AS1615938, illustrating.Also known the elastic retainers of the removable armature of a kind of electromagentic switching apparatus from DE7513445U1, here, armature is fixed in the U-shaped bend piece, and this bend piece is put into housing again.Shortcoming by means of the pivot pin fixed armature that passes from the center is, improves owing to the cross section loss makes magnetic resistance, and this has caused magnetic current to reduce again, and in addition, the cross section loss also can cause the material saturated phenomenon.

Task of the present invention is, creates the possibility of many-sided fixed armature as far as possible, here, keeps can reducing the armature structure height when stablizing in the mechanical force of regulation, so that armature can be used for different contactors.

For an armature that is connected with clamping element, can solve this task by following scheme according to the present invention, forming one under the suspension groove of magnetic core, armature has the hook-shaped protruding part in side two mutual relative sides, and at least one bend piece is hanging in the suspension groove in each sides of two opposite flanks bending suspended end with the hook-type protruding part, armature can be suspended on two bend pieces that dispose relatively mutually at least like this, and above the armature of magnetic core, clamping element is being installed, another bending stiff end of bend piece is taken on the clamping element, and with a screw bend piece is fixed on the clamping element.

According to armature the present invention's suggestion, that adopt single bend piece to fix, here be that an armature disposes a pair of bend piece, only carry out in the armature both sides, avoided whereby owing to adopting pin to carry out the cross section loss that center fixation causes, because do not have the hole at the armature center, thereby with comparing, do not have at transmission device under the situation of power loss, when the regulation excitation, can reduce the armature structure height according to the fixing means of the armature in the prior art.Bend piece can be fixed to armature on the clamping element by means of screw very simply, and here, clamping element is installed in above the armature, and bend piece tightly surrounds armature and clamping element from the side.So formed simple moulding closure, and and then adopted screw, this has produced between clamping element and armature almost is the connection of rigidity.

Another fixed structure according to armature of the present invention is, bend piece is a C shape, have a suspended end weak point, bending and one long, a stiff end of right angle rounding bending arranged.Owing to formed the long leg of rounding bending, produced bend piece prestressing force, this helps installing and clear and definite fixed armature.

Of the present invention another favourable be constructed as follows illustrated.Armature and be in order to improve the main structure that driving force fixes until armature has constituted side hook-type protruding part near below magnetic core, like this, only leaves a slit and is used for ccontaining bend piece suspended end.The suspension groove that forms between hook-type protruding part and armature is determined size like this, promptly will make its enough suspended end of the ccontaining bend piece of energy., adopt this mode also can make full use of material here,, can reduce the armature structure height, and it is constant to keep mechanical force given in advance to stablize because loss is less.

For the higher armature of requirement of strength, such as in device, need the armature of higher force, can improve bend piece prestressing force or bend piece quantity, armature is fixed on the clamping element with these bend pieces.Replace two bend pieces, four bend pieces can be set armature is fixed on the clamping element, such as, be used for very high-power switching device, resemble vacuum switching device.

By means of bend piece armature is fixed to the upper the clamping element of face,, has formed suitable fixed area in the above or be used for the support region at bend piece two ends, and had the corresponding screw hole that is used to install each bend piece hold-down screw for fixing bend piece.Although the flexible characteristic of bend piece adopts bend piece can reach connection between armature and the clamping element according to the present invention.

Introduce the present invention by means of accompanying drawing in detail with embodiment below.Illustrate:

Fig. 1: end view with armature of side bend piece;

Fig. 2: according to the perspective view of the armature of Fig. 1;

Fig. 3: the perspective view of bend piece;

Fig. 4: the perspective view that is fixed on the armature on the clamping element by means of bend piece;

Fig. 5: the cross section that is fixed on the armature on the clamping element by means of four bend pieces;

Fig. 6 a, b: the perspective bottom view and the vertical view of clamping element that is used for the armature of Fig. 5;

Fig. 7: perspective view with armature of Fig. 5 clamping element;

Fig. 8 a, b: be similar to perspective bottom view and vertical view Fig. 7, that adopt the fixing armature clamping element of four bend pieces.

According to the armature 1 of Fig. 1 and 2 can make whole or make by the laminated core that is fixed together with

rivet

12,13, laminated core has through hole 12a, 13b, and covers with outer cover plate 11.The armature side has constituted hook-type protruding part 121, the hook-type protruding part to lower limb 14, that is to say a side towards magnetic core, surrounded a suspension groove 122 that leads to the armature core.Hook-type protruding part 121 leads to armature lower limb front, with the lower limb interval S of being separated by, therefore, leaves enough positions, so that bend piece 2 is hung in the suspension groove 122 round hook-type protruding part 121 usefulness suspended end 21.Because bend piece 2 can not stretch out armature lower limb 14 under the state that is hanging to hook-type protruding part 121, so it can not damage or damage the bobbin that surrounds magnetic core.When the less and required drive of armature hour, the side, almost on the protruding part 121 of hanger, each hangs a bend piece 2 in each side.The cross section of bend piece 2 is roughly c-shaped, as from seeing Fig. 3, bend piece such as make by spring steel, and suspended end 21 and the long end 22 that a right angle rounding bending is arranged with bending of a weak point, this long end 22 has flanged end 23, is used for fixing on the clamping element.This stiff end at bend piece 2 also is provided with the through hole 20 that is used to hold screw 3.Such as figure 4 illustrates clamping element 5, to be fixed to the upper face according to the armature 1 of Fig. 2.Here, bend piece 2 is furnished with fixed area respectively on clamping element, and additional here have the insertion slit, so that an end 22 of bend piece is inserted in the corresponding female sky of clamping element 5.Screw can be screwed into screw hole from above then and then be screwed to 5 li of clamping elements.Like this, armature 1 can be rigidly connected on the clamping element 5 by means of two bend pieces 2.

Each is according to the size of armature and the size of required drive (power consumption), also can be fixed to armature on the clamping element with four bend pieces,, be provided with two bend pieces 2 in each side of armature here, such as from Fig. 7, seeing.Such as in Fig. 6 a and 6b, can see the clamping element that is used for armature, armature is fixed with four bend pieces, in this case, according to four clamping regions with clamping element 7 be screwed four

screw holes

71,72,73,74 above.In addition, clamping element 7 has pin 6 putting holes (dead eye) in the above, sees Fig. 7, is used for clamping element is fixed together with armature.On the bottom surface of clamping element, be provided with the bearing-surface that is used to support armature 1.

Fig. 5 shows according to the fixing cutaway view of the armature of Fig. 7.Bend piece has surrounded armature and clamping element from the side, here, the bend piece on the armature is hung into to 122 li of suspension grooves, and with screw 3 be fixed to clamping element above, this method can be saved space and fixedly connected, can also strengthen this connection by appropriate pre _ stress.

Fig. 8 a and 8b show another structure possibility that adopts four bend piece 2 fixed armature clamping elements, here, compare with the clamping element of Fig. 6, the characteristics of this clamping element are that surface texture is simple, as seeing, on clamping element, can lay shock absorber part at Fig. 7.In order to support pin 6, also can be on clamping element 7 formation side bearing shell 77,78.

The present invention is fixed armature simply, can many-sidedly use, and can make economically whereby, and can utilize the armature volume fullest aspect driving force.

Claims

1. have a magnetic core and one and clamping element (5; 7) electromagentic switching apparatus of the armature of Lian Jieing (1), it is characterized in that, armature (1) has side hook-type protruding part (121) two mutual relative sides, thereby form suspension groove (122) towards magnetic core, and at least one bend piece (2) each side two opposite flanks surrounds hook-type protruding part (121), the suspended end of bending (21) is hanging to suspension groove (122) lining, armature (1) can be suspended at least two mutually relatively on the bend pieces (2) of configuration like this, and above the armature (1) of magnetic core (19) be provided with clamping element (5; 7), another bending stiff end (22) of bend piece (2) is taken clamping element (5; 7) on, and bend piece (2) is fixed to clamping element (5 with a screw (3); 7) on.

2. according to the described switching device of claim 1, it is characterized in that bend piece (2) is c-shaped, a suspended end weak point, bending (21) and a stiff end (22) long, rectangular rounding bending are arranged.

3. according to claim 1 or 2 described switching devices, it is characterized in that stiff end (22) has the hole or the screw hole (20) that are used to hold screw (3).

4. according to claim 1 or 2 described switching devices, it is characterized in that, side hook-type protruding part (121) maximum of armature (1) can reach armature (1) below magnetic core (14), and the slit of being left (S) enough is used to hold the suspended end (21) of bend piece (2).

5. according to claim 1 or 2 described switching devices, it is characterized in that the connection between armature and clamping element is equivalent to be rigidly connected.

6. according to claim 1 or 2 described switching devices, it is characterized in that,, resemble vacuum switching device, 4 bend pieces (2) are set the same clamping element of armature (1) (7) is connected for very high-power switching device.

7. according to claim 1 or 2 described switching devices, it is characterized in that for fixing bend piece (2), clamping element (5 or 7) has the suitable fixed area that has screw in the above.