EP3146555A1

EP3146555A1 - Shifting device

Info

Publication number: EP3146555A1
Application number: EP15723512.8A
Authority: EP
Inventors: Adolf Tetik; Nikola BOJANIC
Original assignee: Eaton Industries Austria GmbH
Current assignee: Eaton Intelligent Power Ltd
Priority date: 2014-05-22
Filing date: 2015-05-19
Publication date: 2017-03-29
Anticipated expiration: 2035-05-19
Also published as: EP3146555B1; DE102014107265B4; US20170194123A1; WO2015177144A1; DE102014107265A1

Abstract

The invention relates to a shifting device (1) with a contact (6) which is fixed to the housing and a movable contact (4). The shifting device (1) has a shift lock (2) which has a latch (20) and a latch support (22). The latch support (22) has a latching point (24) for latching the latch (20) to the latch support (22). The shifting device (1) further has a manual shifting lever (7) which is connected to the latch (20) by means of a first bracket (37) in order to contact the movable contact (4) with the contact (6) that is fixed to the housing. The shifting device (1) has a sudden disconnect mechanism (40) for manually causing a sudden separation of the contacts (4, 6). According to the invention, the manual shifting lever (7) is additionally equipped with a second bracket (41) such that an actuation of the manual shifting lever (7) releases the latch connection between the latch support (22) and the latch (20) in order to separate the movable contact (4) from the contact (6) which is fixed to the housing.

Description

SWITCHGEAR

The invention relates to a switching device according to the preamble of claim 1.

In low-voltage switching devices, which have a manual switch button, therefore a manually operable element for closing the switch contacts and forming a conductive current path through the switching device, usually a movable switching contact, which is mechanically coupled to the manual switch button, by the movement of the manual switch button continuously to a housing

Switching contact approximated until the two switch contacts mechanically abut each other. The opening of the contacts, ie the switching off of the switching device is carried out accordingly by moving the respective hand button in

corresponding direction, which has an equally continuous removal of the contacts result. It is even possible for a user to hold by holding the hand button in any intermediate position and the contacts in a corresponding intermediate position.

If there is an electrical potential applied to the relevant switching device, a specific approach of the two switching contacts results in the formation of an arc. This provides a sufficiently low voltage and if only consumers are connected, which only lead to a low current flow through the switching device, usually no problem.

At higher DC voltages or higher DC currents, for example at 600V and 100A, such an arc, which arises in the course of a too slow manual disconnection of the contacts, however, can lead to significant damage to the relevant switching device. If during the turn-off operation, a correspondingly high current flows through the relevant switching device, the arc formed by a slow manual opening of the contacts can not only lead to a total loss of the relevant switching device, but also trigger a fire. There are switching devices are known which have a so-called. Jump off function. In this case, the switch contacts during manual shutdown regardless of the type or speed with which an operator operates a manual switch button, jump-like separated. However, such jump switching functions are primarily in the area of very large circuit breakers, such as those in

Substations are used, common. Such switching devices have separately aufzuladende spring memory, which are used to close or open the contacts, the application of the technology in question in the field of compact switching devices is hardly possible because an integration of the relevant technology in the compact cases is not possible.

The object of the invention is therefore to provide a switching device of the type mentioned, with which the mentioned disadvantages can be avoided, which allows a safe shutdown of the switching device, which has a compact design and which is easy to produce.

This is achieved by the features of claim 1 according to the invention.

This can be a safe shutdown of the switching device, therefore a safe

Contact separation can be achieved, which is independent of the speed with which a user operates the hand lever. The concerned

Switching device can be performed with compact dimensions, and has a small number of required parts.

The subclaims relate to further advantageous embodiments of the invention.

It is hereby expressly referred to the wording of the claims, whereby the claims at this point are incorporated by reference into the description and are considered to be reproduced verbatim.

The invention will be further described with reference to the accompanying drawings, in which a merely preferred embodiment is shown by way of example. Showing:

Fig. 1 shows a preferred embodiment of an objective switching device without upper housing shell in the erosion, in the off state; Fig. 2 shows the switching device of Figure 1 in the erosion, in the on state without spring;

3 shows the arrangement of switch lock, contact arm, jump engagement mechanism and manual shift lever of the switching device of Figure 1 in axonometric view ..;

FIG. 4 shows the arrangement according to FIG. 3 in the cut-out, in the switched-off state; FIG.

5 shows the view according to FIG 3 without spring;

6 shows the arrangement according to FIG. 5 with a partially broken rocker, in a state shortly before the closing of the contacts without a spring;

7 shows the arrangement according to FIG. 5 with closed contacts without adjusting spring;

8 shows the rocker switch of an object switching device in axonometric view;

FIG. 9 shows the rocker switch according to FIG. 8 in a plan view in a partially broken-away view; FIG.

FIG. 10 shows the contact arm of an objective switching device designed as a switching bridge in an axonometric view; FIG.

Fig. 1 1, the switching device of Figure 1 in Ausfriss with jump switching mechanism.

12 shows the arrangement of switching mechanism, contact arm, snap-on mechanism, jump shut-off mechanism and manual shift lever of the switching device of Figure 1 1 in axonometric view.

FIG. 13 shows the arrangement according to FIG. 12 in the cut-out, in the switched-off state; FIG.

14 shows the view according to FIG. 13 with a partially broken rocker switch;

FIG. 15 shows the arrangement according to FIG. 13 with a partially broken rocker, while the snap-on mechanism holds the contact arm; FIG.

16 shows the arrangement according to FIG. 13 with a partially broken rocker switch, in a state shortly before the contacts are closed; FIG. Fig. 17 shows the arrangement of FIG. 13 with closed contacts, and with - in a partially broken view - shown Verklinkungsstelle and

Latching projection and rocker arm;

FIG. 18 shows the arrangement according to FIG. 17 with the manual lever moved to the contact opening while the latch is still active; FIG.

FIG. 19 shows the arrangement according to FIGS. 17 and 18 in the switched-off state; and FIG. 20 the hand lever in an exploded view.

Fig. 1 1 shows a switching device 1, in particular protective switching device, with a housing-fixed contact 6 and a movable contact 4, wherein the movable contact 4 is arranged on a, movably arranged in the switching device 1, contact arm 3, wherein the movable contact 4 to Contacting the

housing-fixed contact 6 and formation of a conductive current path through the switching device 1 is provided, wherein the switching device 1 comprises a switching mechanism 2, which is connected to the contact arm 3, wherein the switching mechanism 2 has a pawl 20 and a latch support 22, wherein the latch support 22 a

Verklinkungsstelle 24 for latching the pawl 20 with the pawl support 22, wherein the switching device 1 further comprises a manual shift lever 7, which hand lever 7 for contacting the movable contact 4 with the housing-fixed contact 6 is connected by means of a first bracket 37 with the pawl 20, wherein the switching device 1 has a jump breaking mechanism 40 for the manually caused jump-like separation of the contacts 4, 6, wherein on the manual shift lever 7 further a second bracket 41 is mounted such that an actuation of the manual shift lever 7 for separating the movable contact 4 from the housing-fixed contact 6, the latching of the pawl support 22 with the pawl 20 releases.

Thereby, a safe shutdown of the switching device 1, therefore a secure separation of the contacts 4, 6 are achieved, which is independent of the

Speed with which a user operates the manual shift lever 7. The relevant switching device 1 can be designed with compact dimensions, and has a small number of required parts. The subject invention relates to an electrical switching device 1, wherein it is preferably provided that the switching device 1 is designed as a protective switching device or as a so-called. Self-switch. It is preferably provided that the switching device 1 is designed approximately as a circuit breaker or circuit breaker. Preferably, the switching device 1 is designed as a compact low-voltage protection switching device. The switching device 1 has at least one trigger 33 according to the preferred embodiment. FIGS. 1 and 2 each show an electromagnetic release 33, such as a short-circuit release. It can also be provided in a known manner designed thermal release, such as a bimetallic release for overcurrent tripping. Furthermore, it can be provided the

trigger 33 to be combined.

The switching device 1 has at least one movable contact 4, as well as at least one housing-fixed contact 6. According to the illustrated preferred

Embodiment, the switching device 1 a so-called. Double interruption, and thus has two movable contacts 4 and two fixed contacts 6, which, however, are assigned a single switching path.

If the at least one movable contact 4 is in electrically conductive connection with the at least one housing-fixed contact 6, there is an electrically conductive current path through the switching device 1. The switching device 1 has connection terminals, not shown. If there is no such electrically conductive connection through or over the switching device 1, this is referred to as switched off or as switched-off state. Unless the

corresponding conductive connection, this is considered switched on or

switched state called. The transitions between the two states become corresponding, and as usual, as turning on or off the

Switching device 1 denotes. The term closed contacts 4, 6 for switched on, as well as opened contacts 4, 6 for switched off can also be used synonymously.

The at least one movable contact 4 is arranged on a movable contact arm 3. According to the preferred embodiment, the contact arm 3, shown separately in FIG. 10, has two movable contacts 4 which are connected to respective parallel fork-shaped extensions 34 of the contact arm 3, which in this Design can also be drawn as a contact bridge or switching bridge, are arranged.

At one end remote from the at least one movable contact 4, the contact arm 3 has a contact arm extension 5, which according to the preferred embodiment is hook-shaped. According to the preferred

Embodiment is an end portion 30 of the Kontaktarmfortsatzes 5 in

Essentially arranged parallel to a central piece 31 of the contact arm 3. It can be provided according to the structural conditions of the relevant switching device 1 different angle.

Furthermore, the contact arm 3 has a bearing point 35, which is arranged between the at least one movable contact 4 and the contact arm extension 5, and is preferably designed as an opening.

The contact arm 3 is formed as a direct current-carrying part, preferably comprising a copper-base alloy. According to the illustrated embodiment, the contact arm 3 is formed substantially in one piece, wherein only the two movable contacts 4 as a support of a

corresponding contact material are formed. It can also be provided that the contact arm 3 is constructed in several parts, and only the directly current-carrying areas of the contact arm 3 are formed comprising a good conductive copper alloy, while the contact arm extension 5 is formed of a different material. In practice, in particular integrally formed contact arms 3 have been proven in terms of efficient production, but also in terms of a rigid structure.

The switching device 1 has a so-called switching mechanism 2. The switching mechanism 2 is a mechanical arrangement which controls the movements of the contact arm 3. The switching mechanism 2 has in the preferred and illustrated embodiment, in addition to the contact arm 3 further comprises a contact arm 19, a pawl 20 and a latch support 22. Fig. 3 shows the corresponding modules released from the other components of the switching device 1 in axonometric view and in the off state. The contact arm 19, the contact arm 3 and the pawl support 22 are movably mounted about a common switch cam pivot axis 23 in the switching mechanism 2, and each have corresponding openings or bearings on. The three parts are each arranged to be movable relative to one another. Between contact arm 19 and contact arm 3 are according to the illustrated embodiment two

Leg springs 36 are arranged, which cause the contact pressure with closed contacts 4, 6, and press the contact arm 3 against the Kontaktarmträger 19 with open contacts 4, 6, as shown in Fig. 4 and 5. With closed contacts 4, 6, the contact arm 3 is partially of the

Contact arm support 19 lifted, as shown in Fig. 7. The pawl 20 may also be referred to as a locking lever.

On the contact arm 19, the pawl 20 is movably mounted about a pawl rotation axis 21. The pawl 20 is connected via a bracket 37 and a rod with the

Manual shift lever 7 of the switching device 1 connected. The first bracket 37 may also be referred to as a push rod or formed.

The latch support 22 has a Verklinkungsstelle 24 for connection to the pawl 20. In the so-called latched state, therefore, when the latch 20 at the

Latch support 22 engages, starting from a switched-off state of the switching device 1, a movement of the manual shift lever 7 via the first bracket 37 transmitted to the pawl 20. Since the pawl 20, due to the latching, can not escape or swing out, is due to the movement of the

Manual shift lever 7, further the contact arm 19 and the contact arm 3 moves.

The latch support 19 also has a window 27, through which the

Contact arm extension 5 engages, as well as further a release extension 28, which is arranged in the switching device 1 opposite the release plunger 38 of the trigger 33, as shown ind in Figs. 1 and 2. By moving the pawl support 19, that is, by the trigger plunger 38 strikes against the release extension 28, the latch between pawl 20 and pawl support 19 can be solved, resulting in an opening of the contacts 4, 6.

The switching device further includes according to the particularly preferred embodiment a so-called snap-on mechanism 8. Figs. 1 and 2 show a correspondingly designed switching device 1, wherein the jump switching mechanism 40 is not shown in these representations.

Through the subject jump activation mechanism 8, the functionality of the snap-start function for a long time or a variety of

Switching safely be guaranteed. This can ensure that when the contacts 4, 6 are closed, therefore when the switching device 1 is switched on, the contacts 4, 6 suddenly close. This can be achieved that the snap-start function over many

Switching operations without significant changes takes place. Due to the fact that the contact arm catcher 11 does not have a low hardness or surface hardness, as the contact arm extension 5, wear phenomena, in particular material removal, can be avoided or reduced at the rocker switch so that there is no effect on the snap-on function. This can prevent that due to material removal to a steady displacement of the breakpoint of jump snap mechanism 8 comes, until then, that the rocker switch 10 can no longer hold the Kontaktarmfortsatz 5, and the snap-on mechanism 8 was ineffective.

It has been explained above how, in the latched state, a movement of the

Manual shift lever 7 leads to a movement of the contact arm 3 and consequently of the at least one contact. In order to avoid a steady continuous approach, the snap-on mechanism 8 is provided, which the

Contact arm 3 at a predetermined approach of at least one

movable contact 4 to the corresponding housing fixed contact 6 holds while the movement of the manual shift lever 7 is continued. FIGS. 4 and 5 respectively show the relevant components in the switched-off state.

Fig. 6 shows a position in which the contact arm 3 is held. The contacts 4, 6 are in an isolation distance from each other, which can expect no rollover. When a certain position of the manual shift lever 7 is exceeded, it comes to a sudden bridging this

Isolation distance and to close the contacts 4, 6. This can be prevented that it comes to the formation of an arc, which sufficiently long to lead to destruction of the switching device 1. By the sudden closing of the contacts 4, 6 can also be ensured that the necessary contact pressure is available very quickly and not only slowly built, and there is no contact bounce.

The snap-on mechanism 8 has a rocker switch 10 which is rotatably mounted in the switching device 1 about a jump rocker rotation axis 25. The rocker switch 10 has a so-called. Kontaktarmfangeinrichtung 11, which is provided for contact with the Kontaktarmfortsatz 5 or formed. It is provided that the Kontaktarmfangeinrichtung 11 temporarily holds the Kontaktarmfortsatz 5 at the isolation distance, and then releases specifiable. The

Spring rocker 10 is controlled by a first cam 9 of the manual shift lever 7, wherein the manual shift lever 7 further comprises a second cam 26.

The rocker arm 10 is formed according to the illustrated preferred embodiment as a lever, the Kontaktarmfangeinrichtung 11 is disposed on a first lever arm 16 of the rocker switch 10, and wherein a second lever arm 17 of the rocker arm 10 as actuating extension 18 for contact with at least the first cam 9 of the manual shift lever 7 is formed.

The rocker arm 10 is connected by means of a spring 29 with the contact arm 19. The respective adjusting spring 29, which is preferably designed as a helical tension spring, acts on the rocker switch 10 on a pin 32, which is arranged slightly eccentric. In the off position of the

Manual shift lever 7, the second cam 26 presses against the second lever arm 17 of the rocker switch 10, and presses the contact arm catcher 11 of the

Contact arm 5 away. The spring 29 is essentially free of tension in this position. By movement of the manual shift lever 7 in the direction of the switched-on position, the second cam 26 is moved away from the second lever arm 17, whereby a pivoting of the rocker switch 10 is made possible.

At the same time the spring 29 is tensioned, since the contact arm 19

is moved away. As a result of the now applied by the spring 29 force, as well as the ability to move, pivots the first lever arm 16 of the rocker 10, which carries the Kontaktarmfangeinrichtung 11, in the direction of this just zubewegenden this Kontaktarmfortsatzes 5, which then get in touch with each other.

A continuation of the movement of the manual shift lever 7 now no longer leads to a movement of the contact arm 3, which is held on the Kontaktarmfortsatz 5 on the contact arm catcher 1 1. If the manual shift lever 7 moves further in the direction of switching on the switching device 1, there is a further movement of the Kontaktarmträgers 19, resulting in a further tensioning of the torsion springs 36 , as well as to one

If the manual shift lever 7 continues to move accordingly, the first cam 9 comes in the range of the second lever arm 17 of the rocker switch 10. The first cam 9 presses the contact arm catcher 1 1 of the

Contact arm extension 5 away, whereby the contact arm 3 is released and it comes to a sudden closing of the contacts 4, 6.

The contact arm 3 is preferably located at a first Kontaktarmhaltefläche 1 on the Kontaktarmfangeinrichtung 1 1.

It is provided that the contact arm catcher 1 1 has a surface hardness which is greater than or equal to a surface hardness of the Kontaktarmfortsatzes 5, in particular the first Kontaktarmhaltefläche 14. The surface hardness of the Kontaktarmfangeinrichtung 1 1 is therefore at least as high as the

Surface hardness of the contact arm extension 5. The surface hardness or simply the hardness designates the resistance to which the respective bodies or whose surfaces oppose the penetration of a test specimen. Due to the hardness of the Kontaktarmfangeinrichtung 1 1 relative to the Kontaktarmfortsatz 5, excessive wear of the Kontaktarmfangeinrichtung 1 1 can be avoided.

With regard to the surface hardness of the Kontaktarmfortsatzes 5 is provided that the areas or parts of the Kontaktarmfortsatzes 5, which with the

Kontaktarmfangeinrichtung 1 1 are in contact or operationally come into contact, the corresponding surface hardness compared to

Contact arm catching device 1 1 have. It is preferably provided that the relevant hardness or surface hardness is determined by the Vickers hardness test method.

In particular, it is provided that the contact arm catcher 11 is formed comprising metal, wherein it is provided above all that the

Contact arm catcher 11 comprising steel is formed.

It is preferably provided that the contact arm catcher 11 is formed substantially rotationally symmetrical, whereby a good and low-friction sliding of the Kontaktarmfortsatzes 5 is given by the contact arm catcher 11. It has proved to be advantageous that the

Contact arm catcher 11 is designed as a round rivet and / or tubular rivet 12. According to the illustrated particularly preferred embodiment of a

Switching device 1, the contact arm catcher 11 is formed as a tubular rivet 12 made of steel. Such has in addition to a simple manufacturability and

Implementability further, a high dimensional stability on, creating a

Moving the isolation distance over many switching cycles can be prevented.

Particularly preferred, and in particular in the formation of the

Kontaktarmfangeinrichtung 11 as round rivet and / or tubular rivet 12 easy to implement, is that the contact arm catcher 11, to its own

Kontaktarmfangeinrichtungsachse, rotatably mounted in the rocker switch 10 is mounted. The contact arm extension 5 therefore rolls along the contact arm catcher 11, whereby the longevity of the arrangement can be further increased.

It is preferably provided that the end region 30 of the contact arm extension 5 has a rounding, in the region which abuts against the

Contact arm catcher 11 is provided in the release of the same. As a result, the wear on the Kontaktarmfortsatz 5 as well as the

Contact arm catcher 11 are further reduced.

In the preferred hook-shaped design of Kontaktarmfortsatzes 5 is preferably provided that the contact carrier extension 5 the

Contact arm catcher 11 engages behind when the two parts engage stand. It is provided that the Kontaktarmfangeinrichtung 1 1 is designed accordingly to allow such engagement behind. The

Kontaktarmfangeinrichtung 1 1 preferably corresponding to a web-like structure, which connects two side legs 39 of the rocker switch 10. Such is the preferred, rotationally symmetrical design of the

Contact arm catcher 1 1, as shown in the figures, given. The contact carrier extension 5 engages behind the contact arm catcher 1 1.

Preferably, it is further provided that the rocker switch 10 in the region of

Kontaktarmfangeinrichtung 1 1 has a limit stop 13, and that, upon engagement of the Kontaktarmfortsatzes 5 with the rocker switch 10, the first

Kontaktarmhaltef pool 14 on the contact arm catcher 1 1 is applied, and a second Kontaktarmhaltef 15 rests against the limit stop 13. The second contact arm retaining layer 15 is preferably arranged substantially normal to the first contact arm retaining layer 14. The limit stop 13 prevents too far or deep penetration of the Kontaktarmfortsatzes 5 in the rocker switch 10. This allows the intended function of the snap-lock can be further secured.

The switching device has a jump-breaking mechanism 40 for the manually caused jump-like separation of the contacts 4, 6. The jump-breaking mechanism 40 comprises a second bracket 41, which analogously to the first bracket 37 may be formed or designated as a push rod or rod, and which second bracket 41 is mounted on the manual shift lever 7. The second bracket 41 cooperates with the pawl support 22 in such a way that upon actuation of the

Manual shift lever 7 for separating the contacts 4, 6, the latching of

Latch rest 22 is released with the pawl 20.

1 to 19 show the appropriately designed switching device 1 with jump switching mechanism 40, wherein further also at least parts of

Sprungeinschaltmechanik 8 is shown.

The relevant manual shift lever 7 is, starting from a position which corresponds to the on state of the switching device 1, moved to a, the off state of the switching device 1 corresponding position, wherein the second bracket 41 moves the latch support 22 in such a way that a release of the latch between the pawl 20 and the latch support 22 occurs. The switching mechanism 2 in question is therefore "triggered" by means of the second bracket 41, since the second bracket 41 moves the latch support 22 in accordance with an actuation by the release plunger 38 of the trigger 33.

Fig. 12 shows the respective components in axonometric representation. Figs. 13 to 16 show the switching of the switching device 1 by means of

Sprungeinschaltmechanik 8, and the other Figs. 17 to 19 show the switching off of the switching device 1 by means of jump switching mechanism 40th

It should be noted that the subject switching device 1 in the context of so-called. Free release even with a manual shift lever 7, which is fixed in the position corresponding to the on state, can trigger, and it comes to a separation of the contacts 4, 6. The representational

jump off mechanism 40 described concerns the manually caused

Separation of the previously closed contacts 4, 6 by means of an actuation of the manual shift lever 7. The relevant operation, regardless of the term "manually" also by means of an external mechanical actuator, which drives the manual shift lever 7.

The latch support 22 has according to the preferred embodiment

Guide slot 53, in which the second bracket 41 is arranged partially displaceable. The second bracket 41 is not rigidly connected to the latch support 22, but arranged longitudinally displaceable in said guide slot 53. The guide slot 53 is preferably formed by two stub-like extensions 49, but can also be designed differently.

The guide slot 53 is preferably at a jump trigger extension 55 of

Latch rest 22 arranged. The latch support 22 is preferably designed as a lever, which is rotatably or pivotably mounted on the switch lock rotation axis 23. A lever arm of this lever-like latch support 22 is formed by the release extension 28. The second lever arm is through the

Jump trigger extension 55 is formed, wherein the switch cam rotation axis 23 is disposed between the release extension 28 and the jump trigger extension 55. The latch support 22 further preferably has a jump trigger stop 54 for actuation by the second bracket 41, which jump trigger stop 54 is preferably arranged on the guide slot 53. In particular, the

Jump trigger stop 54 formed by one of the two preferably stub-like projections 49, which together form the guide slot 53.

The second bracket 41 further has a shoulder or a hook-shaped

End portion 48 to actuate the jump trigger stop 54.

The manual shift lever 7 preferably has a first manual shift lever part 42 and a second manual shift lever part 43. The handle 45 of the manual shift lever 7 is arranged on the second manual shift lever part 43. Both manual shift lever parts 42, 43 are rotatable about one and the same hand lever pivot axis 44

arranged. The first bracket 37 is mounted on the first manual shift lever part 42, and the second bracket 41 is mounted on the second manual shift lever part 43.

The first manual shift lever part 42 and the second manual shift lever part 43 are at least partially formed as a rotationally symmetrical body. On the second manual shift lever part 43 are already in connection with the

Sprungeinschaltfunktion described first and second cam 9, 26th

arranged. In the region of the second cam 26 and the storage of the first bracket 37 is arranged.

The first manual shift lever part 42 is preferably mounted at least partially coaxially within the second manual shift lever part 43. The two

Manual shift lever parts 42, 43 are by means of a within the

Manual shift lever 7 arranged hand shift lever spring 46 biased with respect to a basic position. Fig. 20 shows an exploded view of

Manual shift lever 7, wherein the manual shift lever spring 46 is shown.

The first manual shift lever part 42 is rotatable relative to the second manual shift lever part 43 by a predefinable angular range. Preferably, the angular range and a length of the second bracket 41 are formed such that the latching of the pawl support 22 is released with the pawl 20 when the manual shift lever 7 in the region of a center position between a closed position of the Manual shift lever 7 and an OFF position of the manual shift lever 7 is arranged. The position of the manual lever 7 is hiebei preferably determined by the position of the handle 45. As a result, a certain area can be realized, within which the handle 45 and consequently also the second manual shift lever part 43 can be moved, without the contacts 4, 6 being disconnected. This is important in practice to prevent even slight touches of the handle 45 lead to a shutdown of the switching device 1. As the center position, the angular center position of the handle 45 between the two positions, which correspond to a switched-on switching device 1 or a switched-off switching device 1, is preferably considered. It is preferably provided that said range is ± 15 ° about the center position. The representational data relate preferably to an exceeding of said position of the handle 45 and the second manual shift lever part 43. The second

Manual shift lever part 43 can therefore be moved to the specific position without a separation of the contacts 4, 6 takes place. Will be the second

Manual shift lever 43 moves beyond this position, the jump-like separation of the contacts 4, 6 takes place.

FIGS. 17 and 18 respectively show assemblies of the switching device 1, wherein the

Contacts 4, 6 are each closed. In Fig. 17 is also the handle 45 in the on position. In Fig. 17, the Verklinkungsstelle 24 is shown in a partially broken view. Compared with FIG. 17, in the representation according to FIG. 18, the handle and also the second one

Manual shift lever part 43 is moved counterclockwise. As a result, the hook-shaped end portion 48 of the second bracket 41 comes into contact with the

Jump trigger stop 54, and has already moved this slightly, as shown at the Verklinkungsstelle 24. Although the latching of the latch 20 with the latch support 22 still exists, and the contacts 4, 6 are closed, however, latch 20 and latch support 22 are only very slightly in contact. Good to see in comparison of the two figures 17 and 18 is that in each case the first manual shift lever part 42 by the rocker arm 51 on the

Locking projection 50 is held, and only the second manual shift lever part 43 has moved. In the preferred embodiment, the second manual shift lever part 43 has a segment-like cutout 47, as shown in Fig. 20. In this section 47, the first and second cams 9, 26 of the first

Manual shift lever part 42 is arranged. The spring within the manual shift lever 7 presses the first manual shift lever part 42 with an edge of the segment-like cutout 47 against the first cam 9. The second manual shift lever part 43 can therefore be moved relative to the first manual shift lever part 42 about the manual shift lever pivot axis 44.

At the first manual shift lever part 42, a latching projection 50 is arranged.

The latching projection 50 is preferably arranged in the region of the first cam 9, or subsequently to the first cam 9. When the switching device 1 is switched on, the first cam 9 releases the contact arm 3, so that the contacts 4, 6 come to a close. In addition, or in the representations below, the first manual shift lever part 42, a pivotally mounted rocker arm 51 is arranged as a further part of the switching mechanism 2. The rocker arm 51 engages in the latching projection 50, and holds the first manual shift lever part 42 in its position. The second manual shift lever part 43 is movable relative to the, held by the rocker arm 51 first manual shift lever part 42, whereby it at

Exceeding a certain position for deflecting the pawl support 22 and consequently separating the contacts 4, 6 comes. The segment-like cutout 47 on the second manual shift lever part 43 is to be executed or dimensioned accordingly, that a correspondingly further rotation of the second

Manual shift lever part 43 is possible without the second manual shift lever part 43 previously abuts the second cam 26.

When disconnecting the contacts 4, 6 and the contact arm 19 is moved. Arranged on the contact arm support 19 is a contact arm support extension 52 which, when the contacts 4, 6 are open, pushes the tilt lever 51 away from the locking projection 50. During the opening operation of the contacts 4, 6, therefore, the rocker arm 51 is lifted from the locking projection 50, whereby the first

Manual shift lever part 42 relative to the second manual shift lever part 43

can pivot back, and the first cam 9 rests again on the segment-like cutout 47. The rocker arm 51 is spring loaded accordingly, whereby it is pressed in the direction of the first manual shift lever part 42.

Claims

PATENT APPLICATIONS

1 . Switching device (1), in particular protective switching device, with a

housing-fixed contact (6) and a movable contact (4), wherein the movable contact (4) on a, movably arranged in the switching device (1), contact arm (3) is arranged, wherein the movable contact (4) for contacting the fixed to the housing Contact (6) and formation of a conductive current path through the switching device (1) is provided, wherein the switching device (1) comprises a switching mechanism (2) which is connected to the contact arm (3), wherein the switching mechanism (2) a latch ( 20) and a latch support (22), wherein the

Latch support (22) has a Verklinkungsstelle (24) for latching the pawl (20) with the latch support (22), wherein the switching device (1) further a

Manual shift lever (7), which hand lever (7) for contacting the movable contact (4) with the housing fixed contact (6) by means of a first bracket (37) with the pawl (20) is connected, wherein the switching device (1) a jump shutdown mechanism (40) for the manually caused sudden separation of the contacts (4, 6), characterized in that on the

Hand lever (7) further a second bracket (41) is mounted such that an actuation of the manual shift lever (7) for separating the movable contact (4) from the housing fixed contact (6), the latching of the latch support (22) with the pawl ( 20).

2. Switching device (1) according to claim 1, characterized in that the latch support (22) has a guide slot (53), in which the second bracket (41) is arranged partially displaceable.

3. Switching device (1) according to claim 2, characterized in that the latch support (22) has a leap release stop (54) for actuation by the second bracket (41), which jump trigger stop (54) is preferably arranged on the guide slot (53).

4. Switching device (1) according to one of claims 1 to 3, characterized in that the manual shift lever (7) has a first manual shift lever part (42) and a second manual shift lever part (43), wherein the first

Manual shift lever part (42) and the second manual shift lever part (43) are arranged rotatably about the same hand lever pivot axis (44), wherein a handle (45) of the manual shift lever (7) on the second manual shift lever part (43) is arranged, wherein the first bracket (37 ) is mounted on the first manual shift lever part (42), and wherein the second bracket (41) on the second manual shift lever part (43) is mounted, and wherein the first manual shift lever part (42) relative to the second

Manual shift lever part (43) is rotatable by a predetermined angular range.

5. Switching device (1) according to claim 4, characterized in that the angular range and a length of the second bracket (41) are formed such that the latching of the latch support (22) with the pawl (20) is released when the manual shift lever ( 7) in the area of a middle position between a

Switch-on position of the manual shift lever (7) and a switch-off position of the

Manual shift lever (7) is arranged.

6. Switching device (1) according to claim 4 or 5, characterized in that the first manual shift lever part (42) and the second manual shift lever part (43) are at least partially formed as a rotationally symmetrical body.

7. switching device (1) according to one of claims 4 to 6, characterized

in that the first manual shift lever part (42) is mounted coaxially inside the second manual shift lever part (43) at least in regions.

8. Switching device (1) according to one of claims 5 to 7, characterized

in that a latching projection (50) is arranged on the first manual shift lever part (42), and in that the latching projection (50) is in the switched - on position of the manual shift lever (7) with a pivotably mounted toggle lever (51) of the

Switch lock (2) cooperates to the manual shift lever (7) in the

Keep switched position.

9. Switching device (1) according to claim 8, characterized in that the contact arm (3) connected to a Kontaktarmträger (19) of the switching mechanism (2) and in that the contact arm support (19) has a contact arm support extension (52) which, when the contacts (4, 6) are open, pushes the toggle lever (51) away from the latching projection (50).

10. Switching device (1) according to one of claims 1 to 9, characterized

in that the contact arm (3) has a contact arm extension (5) at an end facing away from the movable contact (4), that the switching device (1) further comprises a snap-on mechanism (8) which

Sprungeinschaltmechanik (8) a rotatably mounted, and of a first cam (9) of the manual shift lever (7) controlled jump rocker (10) with a contact arm catching device (11) for contact with the contact arm extension (5), and that the contact arm catcher (11) Has surface hardness which is greater than a surface hardness of Kontaktarmfortsatzes (5).

11. Switching device (1) according to claim 10, characterized in that the contact arm catching device (11) is formed comprising metal.

12. Switching device (1) according to claim 10 or 11, characterized in that the contact arm catching device (11) is formed comprising steel.

13. Switching device (1) according to one of claims 10 to 12, characterized

in that the contact carrier extension (5) is hook-shaped.

14. Switching device (1) according to one of claims 10 to 13, characterized

in that the contact carrier extension (5) engages behind the contact arm catching device (11).

15. Switching device (1) according to one of claims 10 to 14, characterized

in that the contact arm catching device (11) is rotationally symmetrical.

16. Switching device (1) according to claim 15, characterized in that the contact arm catching device (11) is designed as a round rivet and / or tubular rivet (12).

17. Switching device (1) according to claim 15 or 16, characterized in that the contact arm catching device (11) is rotatably mounted in the rocker (10).

18. Switching device (1) according to one of claims 10 to 17, characterized

characterized in that the rocker (10) in the range of

Contact arm catching device (11) has a limit stop (13), and that, upon engagement of the contact arm extension (5) with the jump rocker (10), a first contact arm retaining surface (14) on the contact arm catcher (11) is applied, and a second contact arm retaining surface (15) abuts the limit stop (13).

19. Switching device (1) according to claim 18, characterized in that the first Kontaktarmhaltefläche (1) substantially normal to the second

Contact arm holding surface (15) is arranged.

20. Switching device (1) according to one of claims 10 to 19, characterized

characterized in that the rocker (10) is designed as a rotatably mounted lever that Kontaktarmfangeinrichtung (11) on a first lever arm (16) of the rocker (10) is arranged, and that a second lever arm (17) of the rocker (10) as an actuating extension (18) for contact with the first cam (9) of the manual shift lever (7) is formed.