SE538471C2 - Triggering device for a contactor - Google Patents

Abstract

Release device for a contactor in the form of an electric vacuum switch (6) with at least two contacts (7; 8), in order to achieve a current flow, are movable relative to each other. The shaft (13) standing under spring pressure (12) affects at least one contact. In addition, there is a lock which holds the axle (13) against the spring pressure (12) out of engagement. To release the detent, there is a drive means (21).

Description

58791 GB si / ab Designation: Release device for a contactor DESCRIPTION Inventions: refers to a release device for a contactor in the form of an electric vacuum switch with at least two contacts, which are movable relative to each other to achieve a current flow.

From EP 0 045 072 51 a vacuum switch is known, in which there are two contacts which extend into an extinguishing chamber. The contacts are connected outside the extinguishing chamber via flex-ible conductors with electrical terminals. A respective electrical contact is relatively fixedly arranged in the extinguishing chamber 1. The respective second contact is pivotally coupled by means of an actuating mechanism. By means of the pre-displacement mechanism, the second contact is displaceable between an opening position and a suction position.

DE 40 05 532 A1 describes a vacuum switch which has a vacuum quench chamber. For suspending the vacuum quenching chamber, there is a resilient connection which connects the vacuum quenching chamber to an outer jaw. In addition, the vacuum quenching chamber is connected to the switch structure via an axial traction means.

A disadvantage of known vacuum switches is that the undercurrent of the switch danger occurs as a result of behavioral friction in the link elements communicating with each other. Such a mirror negatively affects parameters, such as the opening width and the simultaneity of the contact closure. As a result, the function of the vacuum switch is decisively negatively affected. A further disadvantage of the vacuum switches known from the prior art lies in their partially viscous technical construction.

The object of the invention is thus to provide a release device for a contactor, the release time of which is clearly reduced. In addition, the contactor must ensure high-fault safety and also be favorable to manufacture.

This task is solved by the features of requirement t.

The contactor denotes a switch which, through disconnection-proof wires and device (eg motors) against overcurrents and for low voltages.

With a vacuum switch, the present application relates to a design form of a high-power switch in electrical energy technology. The vacuum switch thereby distinguishes the att contacts to reduce an undesired switching arc arranged in an empty space (vacuum).

The invention relates to a release device for a contactor, the contactor being in the form of an electric vacuum through-coupler, which has at least two contacts. The contacts cause a current flow relative to each other. The single contact of the vacuum switch is Lex. attached to the switch housing. The second contact of the vacuum switch is indirectly connected to a shaft via a single contact. The axis under pressure of the compression spring affects at least one of said at least two contacts.

According to the invention, a locking device is provided which holds the shaft against the spring pressure out of engagement, wherein there is a drive means for releasing the locking device. Upon expansion of the compression spring, the compression spring transmits the kinetic energy stored in the compressed compression spring to the shaft. The vacuum contactor is usable as. power disconnectors for almost all high voltage ranges.

The vacuum contactor thereby utilizes the extremely high-electrical stability of vacuum. Due to the small number of pre-ionization available gas cylinders, it is possible to extinguish the other switching arc occurring even at very small switching partial distances. In this way, very high voltages can be mastered, without there being a current breakthrough.

Another preferred embodiment of the invention states that the head of the shaft is one of the contacts affecting and. in a housing plate axiiit movably guided contact ring arranged.

The contact ring is on its side facing away from the shaft connected to the at least one contact of the vacuum contactor. In an opening of the housing plate, there are contact springs which are responsible for maintaining the current-carrying contact between the housing plate and the contact ring. The contact springs are arranged at the inner periphery of the opening of the nose pad and directed opposite centers of the opening. The contact springs ensure that even during the axial control of the contact ring in the nose plate, there is an uninterrupted current flow between the hu plate and the contact ring.

A further preferred embodiment of the invention provided with the locking consists of an arm mechanism stored in a housing, of which one arm engages the drive means and another arm clamps the compression spring. Both arms have one arm engaged with the other arm, respectively.

Depending on the size and extent of the kentactor, the compression spring and arms may be designed with different thicknesses and shapes. This makes it possible to adapt the arm mechanism to the size of the compression spring, so that the compression spring in the position of the release device remains compressed. The arm which engages the drive organ is designed as a connecting arm and is pivotally hinged arranged at a structural part of the release device. The other arm of the arm mechanism is in the form of a support arm. The attachment arm has at least one receiving groove in which the support arm engages when the compression spring is compressed in the vibration position.

Both the closing arm and the support arm are designed as dubbing arms. In the resting position, in which the compression spring is compressed, the support arm rests in the closing arm. The support arm is pivotally arranged at a U-profile which together with an opposite U-profile forms an inner chamber.

In addition, a preferred variant of the invention means that the release device has a pneumatic and / or hydraulic and / or mechanical drive means. Depending on the area of use of the release device, an electromagnetic drive means can also be used. The discharge device then comprises lines which make the compressed air or hydraulic oil available. At the electromagnetic drive means there is a coil in the bay at the current through which a magnetic field is formed.

Preferably, the drive means has a extendable piston which engages the arm of the tilting arm.

The Koiven is triggered by applying a remote-controlled contact to the pneumatic, hydraulic, mechanical or electromagnetic drive means. The contact causes the extendable piston to advance out of the housing of the drive means. The piston acts on the arm of the locking arm so that the closing arm pivots around its pivot point and releases the support arm.

According to another preferred embodiment, the contactor and the locking device are arranged in a common housing. The common house is then divided on its inside into a mechanical '10 chamber and into an electric chamber. Both chambers are separated by a wall.

In addition, it is tilisett that at the outside of the housing a handle is arranged for influencing the locking. The handle can be shaped out like an access flap. The access shaft is pivotally arranged at the outer periphery of the common housing. In the rest condition of the release device, the access shaft abuts the outer periphery of the common housing. The access flap abutting the common housing covers an opening which breaks through the side wall of the common housing. With the expansion of the compression spring, the support arm performs a pivoting movement in the direction of the opening covered by the access flap.

If the vacuum switch is closed, the support arm extends along its upper end through the opening of the common housing. In this way, the access force pivots about its point where it is arranged at the outer periphery of the joint. the housing titiett iäge in which the access flap extends at an angle to the outer wall of the housing. The access flap can be pressed from the outside against the support arm and pivoted to a position F which the access flap bears against the outer wall of the housing. The access jaw thereby affects the support arm in such a way that it pivots in the direction of the shaft. The support arm is thus brought into a position in which it engages in the receiving groove of the attachment arm.

According to another embodiment of the invention, a flap is arranged at the switch housing in the area of the upper end of the support arm. The Kl-affen is pivotally conductively arranged at the housing and enables access of the support arm.

The invention further states that the closing arm preferably has at least one receiving groove.

According to another advantageous embodiment of the invention, the support members have at least one naked. The l-iaken serves to support the support arm at the tiiisl discharge arm.

In addition, it is added that the support arm is preferably pivotable to a connection position and to an open position. The support arm is in-direct via the cross pin in connection with the compression spring. Depending on the expansion or contraction of the compression spring, the support is pivoted to a closed position and to an open position, respectively.

In addition, it can be ensured that the U-profiles have pivot points. The turning points work! oscillation of the support or support members relative to the U-profile. In the following, the invention will be described in more detail by way of example and without limitation of the general nature by means of the exemplary embodiment shown in the drawing.

Herein: Fig. 1 shows the release device in side view, with the support arms according to the invention in open position, Fig. 2 the release device in a side section with the support arm according to the invention in connection position, Fig. 3 the release device in exploded view, Fig. 4 shown in the housing plate the contact ring, Fig. 5 the housing plate equipped with contact springs and Fig. 6 a schematic view of the release device.

Fig. 1 shows a switch housing of the electric switch according to the invention. The. the electrical chamber coupler comprises an electrical chamber 3 and a mechanical chamber 4. The two chambers 3; 4 are delimited from each other by a wall 5. in the electric chamber 3 a vacuum switch 6 is arranged, which comprises two switch contacts 7 and 8. The two switch contacts 7 and 8 are arranged in the switch housing 1 with the vacuum switch 6. The vacuum switch 6 is provided with At its lower end and adjacent to the mechanical chamber 4, the switch contact 8 is attached to a contact ring 11. In the mechanical chamber 4 a compression spring 12 is shown. Axially inside the windings of the compression spring 12 is A shaft 13 is provided. With the reference numeral 14 a cross pin is shown, which penetrates the shaft 13. With its cross pin 14 the shaft 13 rests against the compression spring 1-2. in the interior of the mechanical chamber 4 an inner chamber 16 is arranged, which comprises a first and a second U-profile 17; 18.U Profiles 17; 18 intervene in each other and are at their shins connected to each other. The shaft 13 penetrates the two U-profiles 17; 18 in the area of their lower and upper legs, respectively, abutting each other. The shaft 13 is anchored with its foot in the sideboards of the U-profile 17; 18, which are located at a distance from the contact ring 11. The compression spring 12, which surrounds the shaft 13 with its windings, indirectly influences the contours 34 of the support arms 26 via the cross pin 14 (fig-g 1).

The shaft 13 extends axially inside the mechanical chamber 4 of the switch housing set and breaks through the wall 5, which separated the two chambers 3 and 4 from each other. inside the electric chamber 3, the shaft 13 penetrates the contact ring 11. The contact ring 11 is then attached to the shaft 13. The contact ring 11 is inserted in a single-housing plate 19. At the inner periphery of the housing plate 19, as shown in Fig. 4, contact springs 20 are arranged.

While maintaining the electrical contact, the contact ring11 is movable. axial and / or radius || .t inside the housing plate. 19. The contact springs 20 serve both at axial and also during radial travel of the contact ring 11 inside the housing plate 19 to maintain the electrical contact between the contact ring 1.1 and the housing plate 19.

The contact ring 11 is on the one hand attached to the shaft 13 and on the other hand connected to the switch contact 8 of the vacuum switch 6. A movement of the shaft 13 in and against the direction of movement of the compression spring 12 axially inside the switch housing 1 leads to uniaxial movement of the contact ring 11 inside the housing plate 19 .

Due to the axial displacement of the shaft 13 inside the switch housing 1, the distance of the switch switch 8 of the vacuum switch 6 relative to the switch contact 7 of the vacuum switch 6 is thereby changed or it is possible to reduce or increase the distance of the switch switch 7 relative to the switch contact. 8. in the mechanical chamber 4 there is a drive means 21 which, via piston 40, acts on a long leg 22 of a closing arm 23. The attachment arm 23 is pivotally mounted about a pivot point 24 at the U-profile 18. The coil 40 of the drive member 21 can be actuated remotely or in any other way. With the action of the piston 40, the connecting arm 23 is pivoted about the pivot point 24. The long leg 22 of the connecting arm 23 pivots in the direction of the mechanical chamber 4. The short shank 25 of the closing arm 23 pivots in the opposite direction downwards towards the pressure spring around the pivot point 24, the short leg 25 of the closing arm 23 releases a support arm 26. The support arms 26 are pivotally arranged about a pivot point 27 at the U-profile 18. At the end of the support arm 26 remote from the pivot point 27, the support arm 26 has hooks 28. The hooks 28 of the support arm 26 are arranged so that in the tilting position of the support arm 26 engage in the receiving grooves 29 of the attachment arm 23. The closing position of the support arm 26 is shown in Fig. 2. In Fig. 1, the support arm 26 is in the open position 31.

The upper end of the shock arm 26 provided with the hooks 28 extends in the open position 31 through an opening 33 of the switch housing 1. in the open position 31 the support arm 26 presses against a flap 32. The flap 32 is conductively arranged at the switch housing 1 and in fig. 1 with its lower end located at a distance from the switch housing 1.

Fig. 1 shows the compression spring 12 in a relaxed state. The compression spring 12 presses against the cross pin 14 and displaces the shaft 13 in the direction of the electrical chamber 3. The cross pin 14 engages at a contour 34 of the support arm 26, whereby the support arms 26 pivot about the pivot point 27 in the direction of the opening 33. information on the respective position on the shaft 13.

Fig. 2 shows an electrical switch corresponding to that of Fig. 1, with the difference that the wire coupler is shown in section along the closing arm 23. The support arm 26 is pivoted back about the pivot point 27 to the locking position 30 and now extends approximately axis-parallel to the axis 13. of the support arm 26, the compression spring 12 pushes together indirectly via the cross pin 14 against the leg U-profiles 17; 18. The hooks 28 of the support arm 26 engage the closing edge 30 of the support arm 26 in the receiving grooves 29 of the connecting arms 23. The drive means 21 is not activated and the closing arm 23 extends approximately horizontally towards the relative pivot point 24. In the closing position 23 of the support arms the piston 40 of the drive means 21 in approximately horizontal position. The connection arm 23 thereby secures the support arm 26 against the expansion force of the compression spring 12 from pivoting the pivot point 27.

When the support arm 26 is in the closing position 30, the flap 32 is closed and abuts in its pivot point against the switch housing 1. in Fig. 2 screws 36 are shown with one of which the upper switch contact 7 of the vacuum switch 6 is attached to the electrical guide conductor plate 10. A further screw 36 connects the switch contact 8 of the vacuum torque switch 6 with the contact stage 11.

Reference numeral 1 denotes the switch housing 1 in Fig. 3. In the assembled state, the switch housing 1 is closed with a cover 37. The shaft 13 is arranged above the compression spring 12 and the pointer relative to the shaft 13 transversely extending the cross pin 14. Under the cross pin 14 the position sensor 35 is arranged. To attach the shaft 13 relative to the legs of the U-profiles 17; 18 there is a safety ring. At the end of the shaft 13 which is opposite to the compression spring 12, a support surface can be seen against the fold in the assembled condition the contact ring 11 lies.

Relative to the shaft 13 above the contact ring 11, the housing plate 19 is shown, which has an opening 33, which is equipped with contact springs 20, which are directed in the direction of the opening side. In the Vietian housing plate 19 and the conductor plate 10, a vacuum horn switch 6 is shown. The vacuum switch 6 comprises the upper switch switch 7 and the axial lower horn switch switch 8. Reaches the switch switches 7; 8 of the vacuum switch 6 through the connection of the release device according to the invention are brought into connection, then the circuit for realizing the function of the switch as bypass switch is closed. On both sides of the axis 13 the U-profiles 17 are shown; 1.8, which biidar it. the inner chamber 16. For this purpose the grippers of the U-profiles17 grip; 18 in each other with mold connection. On one side of the shaft 13 is shown the closing arm 23, which in the assembled state is pivotally arranged around the pivot point 24 of the U-profile 18. At the short leg 25 of the attachment arm 23, the receiving grooves 29 are arranged. Opposite lying on the second 11 11 side of the shaft 13, the support arm 26 is shown which is pivotally hinged about a pivot point 27 of the U-profile 18. in Fig. 3 the pivot points 24 and 27 are arranged on the side at the U-profile 1.8 on different height levels. Relative shaft 13 is shown behind the U 'profile 18 support arm 26. The support arm 26 has at its upper end the hooks 28 which are arranged for operative connection with the receiving grooves 29 of the closing arm 23. Relatively the shaft 13 is arranged behind the support arm 26 the jaw 32 which at the horn coupler housing 1.

Approximately the axis parallel to the axis 13 extends inside the E U profiles 17; 18 the inner chamber 16 of the drive member 21. The drive member 21 is in operative connection via a coil 40 with the attachment arm 23. In the interior of the switch housing 1, guides 38 for the conductor plate 10, the housing plate 19 and the shaft 13 are seen. To attach the switch housing 1 to a support structure the fastening rail 39 at the front of the switch housing 1.

The contact ring 11 and the housing plate 19 are connected to each other in Fig. 4 via the contact springs 20. In the case of axial displacement of the contact ring 11 inside the housing plate 19, in this way a current flows between the housing plate 19 and the contact ring 11. The contact ring 11 has here! 42; 43. The hole 42 serves as a screw connection for the contact ring 11 with the switch connector 7 and the hole 43 serves as a screw connection for the contact ring 11 with the shaft 13.

The housing plate 19 is shown in Fig. 5 in perspective view. In the opening 33 of the housing plate 19, the contact ring 11 attached to the shaft 13 is moved in the assembled condition. During axial and / or radial movement of the contact ring 11 inside the housing plate 19, the live contact consists of the contact ring 11 and the housing plate 19. The current contact is ensured by abutting the contact ring 11 against the contact springs 20 of the housing plate. 19. 12 in Fig. 6 schematically shows an arranged position sensor with reference lead drawing 35. When the locking of the release device for the contactor is in the rest position, the compression spring 1-2 holds the shaft 13 against the spring pressure out of engagement. To release the detent, there is a drive means 21, which is shown in the form of a single magnet. In addition, a position sensor 35 indicates whether the release device for the contactor is locked, or whether the release device is released from its locking.

The position sensor 35 has two switching positions. in the standard release device for the contactor is not affected ooh the copier contacts? ooh 8 of the vacuum switch 6 are broken. in this position, the switch connector 49 of the position sensor 35 is open and the switch contact 50 of the position sensor 35, on the other hand, is closed. A circuit 46 between a drive device 47 and an element 48 is closed.

As soon as the tripping device is activated by the drive means 21, the ear switch contact 50 is opened. At the same time, the switch contact 49 is closed and thereby a current voltage is applied to the circuit 51. In the circuit 51 a magnet 54 of a further drive member 52 is arranged. If the circuit 51 is closed, a current voltage is applied to the magnet 54 of the additional drive means 52.

Fig. 6 shows the position sensor 35 designed as a micro-switch with a magnet 54 of a mechanical switch device 53. The mechanical switch device 53 is only schematically shown.

The magnet 54 triggers the mechanical switch device 53, which in turn releases a signal that the trigger device for the contactor is activated by releasing the locking of the drive means 21. At the same time, the switch device 53 sketches the power supply of the magnet 54 of the contactor. further drive means 52 by breaking the control circuit 51.

In addition, in Fig. 6 there is a safety switch (snapper-switch) 55, which maintains a continuous current voltage. The current circuit 46. ax! cross pin inner chamber U-profile housing plate contact spring drive means long sidebar! closing arm pivot point tilisiutníngsarmkort shorter leg support arm pivot point hook receiving groove closing position open position flap opening contour position sensor screw cover cover 42; 4346474849 Piston Hole Circuit Drive Element Elements Copy Contact Circuit Drive Switch Device Magnet

Claims (8)

Ejector device for a contactor in the form of an electric vacuum nozzle coupler (6) with at least two contacts (Tg 8), which for moving a current flow are movable relative to each other, characterized in that under the pressure of a spring (12 standing shaft (13) acts on at least one contact and that there is a locking device which holds the shaft (13) against the pressure of the compression spring (12) out of engagement, a drive means (21) being provided for releasing the locking end. Release device according to Claim 1, characterized in that at the head of the shaft (13) a contact ring (11) which is at least one contact (7; 8) and is arranged axially movably in a housing plate (19) is arranged. Release device according to claim 1 or 2, characterized in that the locking consists of a locking mechanism (23; 26) stored in a housing (t), by: means of the drive means (21) and another down the compression spring (12) and both arms (23; 26) a n-: ve / I ä? ø- fl áq áåå 114% ”ßí A trigger device according to any one of claims 1; 2, 3 are characterized in that the discharge device has an electromagnetic and / or pneumatic and / or hydraulic and / or mechanical drive means (21). š Release device according to one or more of the claims, characterized in that the drive means (21) engages a ejector piston (40) which engages with a n * Ma me; Dispensing device according to claim 1, wherein the locking device is arranged in a common housing (t). 4 vafuøwtawáyßzøwq 1? Release device according to claim 6, characterized in that on the outside of the housing (t) a handle is arranged for actuating the detent. 5 Ejection anorcine according to one or more of claims NXGx / Characterized by the fact that at the housing (1) in the area of the upper end of the support arm (26) a clamp is arranged. q 4-1. Dispensing device according to one or more of claims ßß; 6,? Characterized! in that the support arm (26) is pivotable towards a closing position (30) and into an open position (31). / ÛJ / ZI Trigger device according to claim t, characterized by fi U-PROFIELERMHY; 't ar vridpunkten (24; 27) .EÛW?