DE1023120B - Air contact with auxiliary contacts for use as normally closed or normally open contacts - Google Patents

Description

The subject matter of the invention relates to an air contactor with electromagnetic actuation of the Armature as well as with double auxiliary contacts for use as normally closed or normally open contacts.

A contact device, in particular a relay, has become known, the contacts of which are on one another springs grouped in parallel are attached, which by means of a. Triebarmes under mediation a ladder-shaped auxiliary organ are moved, wherein the auxiliary organ consists of a central rod, the is moved by the drive arm, the longitudinal direction of which is perpendicular to that of the springs and on the insulating cross arms are pushed, which with an opening adapted to the cross section of the rod are provided, are perpendicular to the longitudinal direction of the springs and each at least one of the movable Drive springs. In this known arrangement, the central rod is also between two adjacent ones Arranged groups of springs, both operated by transverse arms pushed onto the rod will. These contacts are also interchangeable. Such exchangeable contacts are also included an electromagnetic contactor with chambers forming insulating members became known, which the Carry fixed contacts and on the one hand placed together with angle levers on a common axis these angular nebulae forming the moving contacts and components of the electromagnets Wear cross members and on the other hand by means of common bolts together with the angle levers as a The whole used in the cutouts of the side walls of the shooting frame and fastened in this way are that this whole formed by the insulating members and the angle lever from the aforementioned Frame can be removed and the insulating members and the angle lever after removal can be folded away from each other.

The present invention consists of these known, sometimes cumbersome measures that in the auxiliary contact housing from the switching bridge from inevitably controlled slide bars are arranged in corresponding recesses or lugs on both sides of the housing, wherein these bars at z. B. two auxiliary contacts, three recesses following one another along the bar included, in which the contact bridge holder with their resiliently arranged auxiliary contact bridges can be exchanged can be plugged in. The bridge holders have one in the region of their half length perpendicular to the side surfaces penetrating window-like recess, which the contact bridge and a helical spring which presses the contact bridge against the boundary edges of the window takes up, so that the contact bridge on the one hand on one

Air contactor with auxiliary contacts
for use as rest or working contacts

Applicant:

Weyer & Zander KG,
Cologne-Nippes, Ossendorfer Str. 26

Claimed priority:

Exhibition on April 25, 1954 on April 25, 1954

opened German industrial fair (sample fair and

Technical fair) in Hanover

Mathias Zander, Cologne-Lindenthal,
has been named as the inventor

End of the contact bridge holder and on the other hand in the opposite direction, that is in Direction of contact pressure.

The interchangeability of the sliding bars in the movement-dependent sliding bars of the switching bridge Contact bridge holder is made possible that on two opposite sides each contact bridge holder ribs of the same prismatic cross-section and the same length are arranged that fit into the recesses of the sliding strips so that they can be turned by turning by 180 ° the contact carrier in two different positions with respect to the position of the one-sided attached Contacts can be brought.

According to the invention, the sliding bars are arranged with the switching bridge on both sides Angle levers in a force-fit connection and are driven directly by this. These angle levers are rotatably mounted in the vertices on the auxiliary contact housing, and their lever arms attack with the attachments in the form of pins that are perpendicularly attached to each end the underside of the switch bridge and at right angles to it in the auxiliary contact housing Slide bars into corresponding U-shaped recesses. Furthermore, the jumper in the In the middle of the face a certain approach for manual operation, from its respective position the switching status can also be recognized.

709 850/334

To guide the contacts within the window-like recess, this has a in the middle over the surface laterally protruding widening or a small approach with which it in a corresponding groove are guided within the window-like recess.

. In the drawing, the embodiment is one Air contactor with double auxiliary s or control contacts illustrated according to the invention, namely shows

Fig. 1 is a view of the air contactor from the rear facing away from the control panel with removed Cap of the right auxiliary contacts,

2 shows a side view of the air protection, Fig. 3 is a vertical section through the air protection along the line I-I of Fig. 1 with as »Normally open« acting auxiliary contacts in the switch-off position of the contactor,

Fig. 4 shows a vertical section through the air contactor along the line I-I of Fig. 1 with as "Normally open" acting auxiliary contacts in the switch-on position of the contactor,

Fig. 5 shows a cross section through the auxiliary contact housing with sliding bar guided therein, the fixed one and movable contacts according to the line II-II of the Fig. 3,

6 shows a plan view of the auxiliary contact arrangement in a schematic representation, the auxiliary contacts act on the left as an »closer« and on the right as an »opener«,

7 shows a plan view of a contact bridge holder,

8 shows a cross section through a contact bridge holder along the line IH-III of FIG. 10,. 9 shows a plan view of the contact bridge holder in a position rotated by 90 ° with respect to FIG. 7,

Fig. 10 is a rear view of the contact bridge holder seen in the direction of the guide of the sliding bar.

The air protection (see. Fig. 1 and 2) consists of the housing 1, the switching bridge 2 with the main contact pieces 2 ', which are moved in the horizontal direction or perpendicular to the switch wall, the auxiliary contact housing 3 with the bars 4, which can be displaced in the vertical direction or perpendicular to the switching bridge, the contact bridge holder 6 with the contact bridges 7 can be exchanged in their prismatic recesses 5 are plugged in. These strips are on the base of the auxiliary contact housing between Projections 8 out. The sliding bars are driven by the switching bridge 2 via two-armed ones Angle lever 10, which are fixedly mounted in their apex at 11 in the housing and their Lever arms with pins 12, 13 attached to the ends on the one hand in corresponding fork-like or link-like Recesses 14 of the reinforced head 15 of the sliding bar and on the other hand in one of the same Recess of the switching bridge are slidably guided.

Through this angle lever, the movement of the switching bridge is inevitably at right angles to the this transferring shifting strips 15-4. The contact bridge holders slide during this displacement movement with prismatic lugs 18, which are symmetrical on both sides of the contact bridge holder and are attached in the same thickness and length, in a U-shaped, provided in the cover 16 (Fig. 5), continuous groove 17. As a result, this contact bridge holder 6 with these approaches in two 180 ° rotated positions in the closing recesses 5 of the sliding bar 4 optionally be inserted, while the continuous groove 17 in the housing cover 16, because only the guide serving, is designed accordingly. Since the contact bridges 7 in the contact bridge holders 6 are arranged asymmetrically, a rotation of 180 ° results in a completely different position the movable contact bridges 7 to the fixed, mounted in the housing 16 contact pieces 19. In the In the arrangements shown in section in FIGS. 3 and 4, the auxiliary contacts are arranged as "make contacts", d. In other words, when the main contacts are open, the auxiliary contacts 7 and 19 are also open (see. Fig. 3), and when the main contacts are closed (see. Fig. 4), then also touch the associated auxiliary contacts 7 and 19. How through Repositioning the contacts on the sliding strips by 180 ° this switching process can be changed or vice versa can be seen from the schematic representation of FIG. 6. The switching bridge is located are in the on position with this arrangement, and accordingly there are also the two non-positive, coupled by angle lever 10 sliding strips 4 on both sides in the same position. In contrast, the contact bridge holders 6 are in the recesses 5 of these sliding strips inserted so that the contacts 7, 19 open on the left side, but closed on the right side are. During the subsequent switch-off movement of the main contact bridge and the resulting shift the bar in the direction of the arrow closes the auxiliary contacts on the left-hand side and the the right side open.

The contact bridge holder 6 itself (see. Fig. 5 to 10) consist of a prismatic body with opposite sides attached prismatic extensions 18, which closing into the recesses 5 fit the bar 4. The body 6 is broken halfway through a window 20, which the movement the contact bridge 7 is limited. This contact bridge is under the pressure of one in the cavity 22 of the contact carrier introduced spring 23, which the contact bridge against the outermost edge of the Window 20 presses, thereby causing its unilateral position.

Claims (2)

Patent claims: 1. Air contactor with auxiliary contacts for use as normally closed or normally open contacts that are interchangeable are used, characterized in that in the auxiliary contact housing (3) from the switch bridge (2) positively controlled Sliding strips (15-4) in corresponding recesses on both sides of the housing (3) and its lid (16) are arranged, which at z. B. two auxiliary contacts three consecutive along the bar Contain recesses (5) in which the contact bridge holder (6) with resiliently arranged auxiliary contact bridges (7) can be exchanged can be inserted, which is about half its length a perpendicular to the side surfaces have penetrating window-like recesses (20, 22), which the contact bridge and a The helical spring (23) pressing the contact bridge against the boundary edges of the recess and on two opposite sides in the recesses of the sliding strips closing gripping and guided in the cover (16) of the housing in a continuous groove (17) Ribs (18) of the same prismatic transverse cut and wear the same length in such a way that they are optionally in two positions rotated by 180 ° can be used. 2. Air protection according to claim 1, characterized in that that the auxiliary contact housing (3) which is arranged perpendicular to the switching bridge is sliding guided sliding bars (15-4) with the switching bridge via angle levers arranged on both sides (10) are in frictional connection in the vertices (11) on the auxiliary contact housing are rotatably mounted and their lever arms with the vertically attached pins (12, 13) at each end on the underside of the switch bridge and engage in corresponding U-shaped recesses on the sliding strips. Considered publications:
German Patent No. 862,805;
Swiss patent specification No. 227 861. 1 sheet of drawings © 709 850/334 1.58