阅读说明：本技术 电气闭合器 (electric closer ) 是由 马库斯·莫申斯基 斯特凡·比伦 于 2018-01-23 设计创作，主要内容包括：本发明涉及一种电气闭合器,该电气闭合器具有：第一连接板；与第一连接板电绝缘的第二连接板,其中,第一和第二连接板在位于引导壳内的接触区域中至少分别具有一个缺口；用于驱动接触件的驱动装置,其中,接触件在引导壳内布置在驱动装置和连接板的接触区域之间并且能够通过驱动装置由打开位置移动到闭合位置,在打开位置中连接板相互绝缘,在闭合位置中连接板相互通过接触件电连接,其中,在闭合位置中,接触件容纳在连接板的缺口中,并且其中,接触件在移动时由两个连接板同时以移动方向在其各自的缺口中引导。(The invention relates to an electrical closer, comprising: a first connecting plate; a second connecting plate electrically insulated from the first connecting plate, wherein the first and second connecting plates each have at least one recess in a contact region located in the guide housing; drive device for driving a contact, wherein the contact is arranged in a guide housing between the drive device and a contact region of a connecting plate and can be moved by the drive device from an open position, in which the connecting plates are insulated from one another, into a closed position, in which the connecting plates are electrically connected to one another via the contact, wherein in the closed position the contact is accommodated in an indentation of the connecting plate, and wherein the contact is guided by both connecting plates simultaneously in the direction of movement in their respective indentations when moving.)

1. an electrical closer having

-a first connection plate for connecting the first connection plate,

a second connecting plate electrically insulated from the first connecting plate, wherein the first connecting plate and the second connecting plate each have at least one recess in a contact region located in the guide shell,

-drive means for driving the contact elements,

Wherein the contacts are arranged in the guide housing between the drive and the contact regions of the webs and can be moved by the drive from an open position, in which the webs are insulated from one another, into a closed position, in which the webs are electrically connected to one another by the contacts, wherein in the closed position the contacts are accommodated in the cutouts of the webs,

It is characterized in that the preparation method is characterized in that,

The contact pieces are guided by the two webs simultaneously in their respective recesses in the direction of movement during the movement.

2. An electrical closer according to claim 1,

It is characterized in that the preparation method is characterized in that,

The contact piece is at least partially made of an electrically conductive material, preferably at least partially made of an aluminum material and/or a copper material, and/or the connecting plate is at least partially made of an electrically conductive material, preferably at least partially made of a copper material and/or an aluminum material.

3. Electrical closer according to claim 1 or 2,

it is characterized in that the preparation method is characterized in that,

the contact piece is designed as a flat piece, in particular a square flat piece, in at least one contact area, in which the contact piece is held in the cutout in the closed position, wherein the shape of the contact area is designed substantially complementary, in particular with a matching precision, to the cutout of the connecting plate.

4. Electrical closer according to any of the preceding claims,

It is characterized in that the preparation method is characterized in that,

The surface normal of the surface of the contact area facing the indentation in the open position is substantially parallel to the direction of movement.

5. electrical closer according to any of the preceding claims,

It is characterized in that the preparation method is characterized in that,

The contact areas are spatially separated from each other, in particular the contact areas are opposite to each other with respect to a central axis of the contact piece extending parallel to the direction of movement, in particular the contact areas are at a mutual distance substantially equal to the mutual distance between the indentations.

6. Electrical closer according to any of the preceding claims,

It is characterized in that the preparation method is characterized in that,

The contact piece is shaped and/or dimensioned relative to the recess of the connection plate in such a way that, when moved, a form-fitting connection, in particular an interference fit, a transition fit or a clearance fit, is formed between the contact piece and the connection plate.

7. Electrical closer according to any of the preceding claims,

It is characterized in that the preparation method is characterized in that,

The connecting plates each have a connecting piece projecting from the guide housing and a part arranged in the guide housing for guiding the contact piece during displacement, and/or the receptacles are arranged on mutually opposite sides of the guide housing.

8. Electrical closer according to any of the preceding claims,

It is characterized in that the preparation method is characterized in that,

the recess of the connecting plate and the contact element have a locking tab and a locking recess which are shaped and dimensioned relative to one another in such a way that, when moved, a form-fitting connection, in particular a locking connection between the contact element and the connecting plate, is formed.

9. Electrical closer according to any of the preceding claims,

It is characterized in that the preparation method is characterized in that,

The guide housing has a guide passage in which the contact is movably arranged.

10. Electrical closer according to any of the preceding claims,

It is characterized in that the preparation method is characterized in that,

The contact area of the connecting plate is arranged on a first end of the guide channel, and the drive device is arranged on a second end of the guide channel opposite to the first end.

11. Electrical closer according to any of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the drive device has a drive element, in particular an electric, hydraulic, pyrotechnic or mechanical drive element, and a displacement element.

12. Electrical closer according to any of the preceding claims,

It is characterized in that the preparation method is characterized in that,

the displacement element is designed as a displacement slide or pin, wherein the contact element is connected to the displacement element in a form-fitting, preferably force-fitting, in particular material-fitting manner.

13. Electrical closer according to any of the preceding claims,

It is characterized in that the preparation method is characterized in that,

At least one insulating element is arranged between the contact and the contact region of the terminal plate in order to insulate the contact, wherein the insulating element is preferably of two parts, preferably two insulating caps, in particular one of the insulating elements covers at least the surface of the contact facing the terminal plate in the open position.

14. Electrical closer according to any of the preceding claims,

it is characterized in that the preparation method is characterized in that,

The insulation is made of an insulating material, wherein the insulating material has a specific conductance of at least less than 10-5S cm-1, preferably less than 10-10S cm-1, particularly preferably less than 10-15S cm-1, in particular the insulating material is designed to have a breakdown strength of at least more than 5kV/mm, preferably more than 20kV/mm, particularly preferably more than 50 kV/mm.

15. Motor vehicle with an energy line and an electrical closure according to any of claims 1 to 14 connected to the energy line.

Technical Field

The invention relates to an electrical closer, in particular a high-voltage closer, and to a motor vehicle having such a closer.

background

Electrical closures have long been known. Electrical closures are often implemented as relays, in particular in automotive applications. The relay is used to switch, in particular to close, the first circuit (switching circuit) by means of a control pulse emitted by the second circuit (control circuit). The galvanic isolation between the switching circuit and the control circuit is dependent here on the electrical breakdown strength of air. Furthermore, the production of the relay is complicated and therefore expensive. Finally, relays are also subject to wear caused by aging. It is also possible that the switching mechanism of the relay gets stuck and cannot be switched.

for battery or fuel cell powered vehicles, the switch is essentially safety critical. Especially for high voltage applications, where voltages of 1000V and higher may occur locally, mechanically and electrically reliable switches are required. In particular, it is necessary for the electrical closer to have a low probability of failure in order to short-circuit the voltage-conducting components in the event of an accident. It is also necessary for the electrical closer to ensure galvanic isolation between the switching circuit and the control circuit at all times in the open state. Furthermore, the electrical closer must maintain the closing capability throughout the life of the motor vehicle, so that the necessary safety can always be ensured.

DE 102011121958 a1 discloses an electrically well-insulated, mechanically fail-safe electrical closure. The closer includes a first connecting plate and a second connecting plate insulated from the first connecting plate. By means of the closing element which can be driven by the drive, an electrical connection can be established between the connecting plates, by means of which the residual charge can be reliably discharged in the event of an accident.

However, the electrical closure described has the disadvantage that, due to tolerances resulting from the design and due to surface contamination, a reproducible and satisfactory contact between the closure element and the connecting plate may not be established, so that, due to the reduced conduction cross section, only an insufficiently rapid removal of the residual charge can take place, which disadvantageously can only be carried out with a high level of heat generation.

Disclosure of Invention

the object of the invention is therefore to provide an electrically well-insulated, mechanically fail-safe electrical closure, by means of which the most rapid and reliable possible removal of the residual charge can be ensured.

this object is achieved in particular by an electrical closer according to claim 1. The object is also achieved by a motor vehicle according to claim 15.

the electrical closer has two connecting plates for connecting the electrical closer to the electrical lines. The connecting plate is preferably made of copper or aluminum. The connection plate can preferably be nickel-plated and/or zinc-plated, in particular in the region of its connection to the energy conductor.

The connecting plates are preferably guided into the housing and arranged in the housing in an insulated manner from one another. A guide channel may be provided inside the housing. The guide channel may be at least partially defined by the web or a surface thereof. The electrical closing means can in particular have electrical contact regions within the guide channel, in which the connecting webs are arranged opposite one another at a distance from one another. The mutually opposite ends of the connecting plates can be shaped such that they constitute receptacles for electrical contacts.

The connecting plate can in particular be arranged in such a way that it extends directly over the edge of the housing. The connecting plates can also each advantageously be arranged at least partially within the recess of the housing.

In order to establish an electrical connection between the connection plates, the contact pieces need to be guided into receptacles formed by the connection plates. For this purpose, the first and second connecting plates each have at least one recess in a contact region located inside the guide shell. It is also possible to arrange more than one notch in the connecting plate, respectively.

The electrical connection between the connection plates can be established by the receptacles of the contacts in the cutouts of the connection plates.

For this purpose, the contact must be electrically conductive at least in sections, preferably at least along its surface, so that the contact electrically connects the webs to one another as soon as the contact makes electrical contact with both webs.

The contact is held in the open position in the guide housing. For this purpose, the contact piece can be held in the open position by the guide housing in a form-fitting manner. In the open position, the contact is arranged electrically insulated from the connection plate.

the contact piece is displaceable, preferably arranged laterally displaceable in the guide housing, wherein the contact piece is guided by the two webs simultaneously in the displacement direction in its respective recess during displacement in the specific configuration. The rear contact is moved to a closed position. In the closed position, the electrical closer is closed, wherein an electrical short circuit between the connection plates is established by the contact pieces. The contact piece is arranged in the contact region in the receptacle of the connection plate in the closed position. This is done by guiding the movement of the contacts in the housing.

This not only makes it possible to establish the electrical contact as quickly as possible after a motor vehicle accident, but also ensures a trajectory which is as reliable as possible during the movement of the contact piece.

In order to move the contact pieces, a drive is preferably provided which allows the contact pieces to be arranged electrically separated from the at least one web in the open position of the electrical closer, whereas the contact pieces are in electrical contact with the two webs in the closed position of the electrical closer and are thereby short-circuited with one another.

For a space-saving configuration of the electrical closer as possible, it is advantageous here if the contact region of the connecting plate is arranged at a first end of the guide channel and the drive device is arranged at a second end of the guide channel opposite the first end.

The drive device is preferably electrically insulated from the connection plate by the guide shell. The guide shell is preferably made of an electrical insulator, for example a polyamide, such as PA 6.

the contact can also be at least partially formed from an insulator. Only the part of the contact which serves for electrically short-circuiting the connection plate and which is in mechanical contact with the connection plate has to be made electrically conductive.

in order to nevertheless ensure a rapid discharge of the residual charge in the event of an accident, it is advantageous if the contact piece is at least partially made of an electrically conductive material with a high specific conductance, preferably at least partially made of an aluminum material and/or a copper material. It is also proposed that the connection plate is at least partially made of an electrically conductive material, preferably at least partially made of a copper and/or aluminum material. The electrically conductive surfaces of the connection plate and of the contact piece are preferably made of the same material, in particular in the contact region.

The contact piece is designed as a flat piece, in particular a square flat piece, in at least one contact area, in which the contact piece is held in the cutout in the closed position. By configuring the contact region as a flat piece, the contact piece can be slid with its contact region into the groove-shaped recess in order to reach the closed position.

in order to establish a high-quality contact, in particular a particularly low-ohmic connection between the terminal webs, it is also preferred to form the contact element at least partially substantially complementary, in particular in a form-fitting manner, to the recess of the terminal web.

the contact piece can be formed by a flat piece, in particular a square flat piece.

It is also noted that high-quality contact conflicts not only with the tolerances resulting from the construction, but also in particular with the surface quality of the parts to be contacted.

In the open position, the contact piece rests on the housing, in particular on the guide shell. In this position, the surface of the contact points is directed in the direction of the receptacle at least in the region of the contact region. The surface has a surface normal. The surface normal of the surface of the contact area facing the indentation in the open position is substantially parallel to the direction of movement. This ensures that the contact piece with the surface facing the recess is displaced in the direction of the recess. The contact piece preferably contacts the recess with a further surface in the closed position. The surface normals of these contact surfaces are in particular perpendicular to the direction of movement. The contact piece is preferably in contact with the web with contact surfaces of two contact pieces lying opposite one another, preferably running parallel to one another. The contact surfaces of the webs extend parallel to one another, in particular in the receptacles. The distance of the contact surfaces of the receptacle preferably corresponds to the distance of the contact surfaces of the contact element, which may be the same as the height of the connection element in the contact region.

The contact piece preferably has at least four contact surfaces, by means of which an electrical connection between the connection plates can be established, wherein in particular the first and second contact surfaces, and the third and fourth contact surfaces are arranged substantially parallel to each other and substantially parallel to the direction of movement of the contact piece.

The contact areas of the contacts may be spatially separated from each other. The contact piece preferably has at least two contact regions which are spaced apart from one another in a direction perpendicular to the direction of movement, preferably also perpendicular to the height direction of the contact piece. The contact regions can in particular lie opposite one another with respect to a center axis of the contact piece extending parallel to the displacement direction. The center axis of the contact piece can thus have a contact region on both sides. The contact area has a contact surface of the contact piece, which in the closed position is in direct contact with the contact surface of the recess. The mutual distance between the contact areas may be substantially equal to the mutual distance between the indentations. This ensures that both contact areas are located in the gap in the closed position.

when the connection between the contact and the connection plate is established, the contact can be guided in its movement through the cutout of the connection plate. The contact is preferably guided directly, in particular simultaneously, by the two webs from the moment when the electrical contact between the contact and the webs is established.

It is also proposed that the cutouts of the contact piece and of the connecting plate are shaped and/or dimensioned such that, during displacement, a positive-locking connection, in particular a press-fit connection, is formed between the contact piece and the connecting plate. In the closed position after movement, an interference fit, transition fit or clearance fit between the contact and the web may be formed.

In particular, it is proposed for the interference fit that the recess is undersized or the contact is oversized relative to the recess.

By means of the undersizing of the recess relative to the size of the contact piece or the oversizing of the contact piece relative to the recess, the surfaces of the parts to be contacted can be at least partially freed from contamination or passivation by friction when the contact is established, so that a high-quality contact is ensured, wherein not only a small but preferably also a large part of the contact surfaces can be used for charge transfer.

In addition to the undersize provided, the contact piece can also be tapered, in particular wedge-shaped, on its side facing the recess.

This not only makes it possible to achieve improved contact by displacing contamination and oxide layers, but also facilitates the fastening of the contact piece in the recess of the terminal plate by means of a self-locking holding force.

in order to reliably prevent the electrical circuit from reopening after the closer has been closed, it is furthermore proposed that the receptacle be designed such that the contact pieces are preferably positively locked in the receptacle in the closed position of the closer.

In addition to the slightly undersized recess or the slightly oversized contact piece, it is therefore also possible to provide a locking tab and/or a locking recess in the recess of the connecting plate and in the contact piece, alternatively or in a superimposed manner, which are shaped and dimensioned relative to one another in such a way that a form-fitting connection, in particular a locking connection between the contact piece and the connecting plate, is formed during the displacement.

The drive means, which are provided in particular for driving the contact pieces, exert such a large force on the contact pieces in the direction of the contact area that the contact pieces can be moved in the direction of the contact area. Thereby moving the electrical closer to its closed position.

In order to be able to bring about the necessary force transmission as far as possible without losses, the contact piece is connected at least in a form-fitting manner, preferably in a force-fitting manner, in particular in a material-fitting manner, to the displacement piece.

The drive device can be formed here by a drive element and a displacement element.

The drive element can be designed as an electrical, hydraulic, pyrotechnic or mechanical drive element, while the displacement element can be designed, for example, as a displacement slide or piston.

In one embodiment, in which the displacement element is designed as a piston, the piston is preferably arranged in the guide housing, so that the guide channel is sealed by the piston. The piston can be cylindrical in this case. It is also possible for the piston to be a cuboid guided in the guide housing. The seal can seal the space in the guide channel facing the drive device from the space of the guide channel facing the receptacle. This is particularly advantageous when the contact piece is moved into the receptacle by means of compressed air. Sealing may mean that the flow resistance of the air in the guide channel is increased by more than 90%, preferably more than 95%, by the piston.

The piston is preferably constructed from an insulating material, in particular polyamide, in particular PA 6. Thereby, the piston of the contact ensures a reliable insulation between the conductive portion of the contact and the drive means. Preferably, the piston faces the drive and the contact piece faces the recess of the connecting plate. The contact piece can be moved inside the guide housing between the drive device and the contact region of the connection plate. The contact piece is preferably arranged on the drive device, in particular on the displacement piece, in the open position of the closer. The contact piece is preferably held in the guide housing in such a way that it can be moved therein only by force. The contact piece can be arranged in the guide housing, in particular, with a press fit. The press fit may be such that a force of at least 10N, preferably at least 20N or at least 50N is required to move the contact laterally in the guide housing.

The pyrotechnic drive can be realized, for example, by a thrust piston, which can be activated by an electrical ignition pulse. The igniter can be arranged in the sleeve. A piston which is displaceable along the longitudinal axis of the sleeve and which is displaced in the sleeve by the explosive energy of the igniter is arranged in the sleeve. The piston is pressed out of the sleeve by the movement of the piston. The piston part pressed out of the sleeve can press the contact element in the direction of the receptacle.

In particular, it is preferred that at least one recess of the connecting plate is provided on mutually opposite sides of the guide shell. The recess can be hook-shaped and/or U-shaped and open in the direction of the contact. The recess can have a base which serves as a stop for the contact piece, so that a maximum movement of the contact piece is limited in the direction of movement.

The recess also ensures a large contact surface of the contact piece with the connecting plate even with a simple orientation and design of the electrical closer.

In order to prevent the contact, which is preferably arranged on the displacement element in the guide channel in a force-fitting or material-fitting manner, from making undesired contact with the lug, it is proposed that at least one insulating element be arranged between the contact area of the contact and the lug in order to insulate the contact, wherein the insulating element is preferably two-part, preferably formed by two insulating caps.

one surface of the contact faces in the direction of the connection plate. The surface normal of the surface is preferably oriented in the same direction as the direction of movement. Said surface is preferably covered by an insulating member. The insulating element can be arranged in particular in the contact region of the contact element.

In order to ensure sufficient insulation even at high voltages by the insulating element, it is proposed that the insulating material of the insulating element, in addition to having a specific conductance of at least less than 10-5S cm-1, preferably less than 10-10S cm-1, particularly preferably less than 10-15S cm-1, also has a breakdown strength of at least more than 5kV/mm, preferably more than 20kV/mm, particularly preferably more than 50 kV/mm. The insulating element can preferably be made of plastic or ceramic for this purpose.

According to a preferred embodiment, two insulation caps are arranged between the contact piece and the contact region of the terminal plate in order to insulate the contact piece, the insulation caps being designed such that at least one part of the insulation caps is separated, in particular split or sheared off, on the terminal plate in the closed state of the electrical closer. The insulating cap is arranged in particular in the region of the contact region on the contact.

in contrast to at least one part of the insulating cap provided shearingly on the webs, the contact elements are accelerated by the displacement element in the direction of the contact region of the webs upon activation of the drive unit until they are finally placed in the recesses of the webs and an electrical contact is established between the webs.

For this purpose, the contact elements are preferably arranged and in particular designed relative to the insulating element in such a way that the contact elements, which are insulated relative to the terminal plate in the open position, break through the insulating element after the activation of the drive. For this purpose, the contact piece can preferably have a chisel-shaped reduction on its surface facing away from the drive, in particular on the surface facing the connecting plate. In this case, the contact can break through the region of the insulating element which directly adjoins the cutout of the connecting plate, at least in the open position. The separation of the insulating element preferably takes place at least in the region of the interface between the insulating element and the surface of the contact strip pointing in the direction of the insulating element.

it is also advantageous to provide the proposed insulation not only with excellent insulation properties, but also preferably with low breaking strength, in particular low shear strength. It is therefore proposed according to one advantageous embodiment that the insulating part is composed of a material having a shear strength according to DIN18137-3 of at least less than 10N/mm, preferably at least less than 5N/mm, particularly preferably at least less than 1N/mm.

It is also advantageous to have an insulation with low tear strength in addition to low breaking and shear strength.

In addition to low breaking strength, shear strength and tear strength, it can be particularly advantageous to provide the insulating material with predetermined breaking points, which are preferably arranged in potential contact areas of the insulating element with the contact and with the connecting plate. The insulating element can thus be more easily broken by the contact piece and sheared off by the contact piece when the drive is triggered.

According to an advantageous embodiment, it is proposed that the connecting plates arranged on the electrical closer each have a connecting piece which projects from the guide housing and a part which is guided into the guide housing and which at least forms the receptacle. The connecting element is especially shaped in such a way that the electrical energy line can be connected thereto in a loss-proof manner. This can be done by means of a bolt or a threaded sleeve joint or by means of a crimp connection or the like. A soldered or welded connection can also be formed between the connecting element and the energy line.

In the guide housing, the connecting plate can be arranged in the region of the receptacle in a non-electrically insulating manner.

this achieves that the exposed regions of the connecting webs are electrically short-circuited to one another by means of the contact pieces.

According to an advantageous embodiment, it is proposed that the connecting plate is held in the guide shell in an elastically deformable manner at least in the area of the cutout. It is thereby achieved that the contact pieces can elastically and/or plastically push the webs away from one another in the cutout region in order to move into the closed position of the closer. In this position, the web may resiliently spring back and thereby surround or at least partially surround the contact and hold it in the closed position.

According to an advantageous embodiment, it is proposed that the guide housing has a ventilation opening in the region of the receptacle, in particular at the end facing away from the drive. When the contact piece moves inside the guide housing, the space between the accommodating portion and the contact piece is reduced, and conversely, the space between the contact piece and the driving device toward the driving device is increased. The reduction of the space between the receiving portion and the contact member causes the pressure to rise. This can lead to the contact piece being pressed back within the guide housing and possibly to the force exerted by the drive device being insufficient to push the contact piece into the receptacle. In order to ensure venting, a vent may therefore be provided. The ventilation opening is preferably arranged centrally between the connecting plates in the region of the receptacle.

drawings

The invention is further elucidated below on the basis of the drawings showing embodiments. Wherein the content of the first and second substances,

Fig. 1 shows a spatial view of the electrical closer in the open position;

Fig. 2 shows a cross-sectional view of the electrical closer according to fig. 1;

Fig. 3 shows another cross-sectional view of the electrical closer according to fig. 1;

4a-c show views of different embodiments of the contact;

FIG. 5 shows a spatial view of the electrical closer in the closed position;

Fig. 6 shows a cross-sectional view of the electrical closer according to fig. 5;

Fig. 7 shows another cross-sectional view of the electrical closer according to fig. 5.

Detailed Description

Fig. 1 shows a spatial view of the electrical closure 1 in the open position. An open guide shell 12 can be seen, in the interior of which a guide channel 14 is constructed. Also visible is a drive device 6, which is composed of a drive unit 8 and a movement unit 10. The drive unit 8 can be designed as an actuator and converts the electrical signal into a mechanical movement. The drive unit 8 can also be designed as a pyrotechnic drive unit and can generate mechanical movement by means of pressure waves, for example, by ignition of an igniter. The moving unit 10 may, for example, be configured as a moving slide or piston, which is driven by the drive unit 8 and performs a translational movement.

In one embodiment, in which the pneumatic pulse is triggered by the drive unit 8, the guide channel 14 must be well sealed against the outside. In order not to generate an overpressure that impedes movement in the direction of movement during the movement of the displacement unit 10, it is proposed to arrange an air outlet (not shown here) in the guide channel 14 or to vent the corresponding space. In fig. 1, it can also be seen that a contact 20 is arranged on the mobile unit 10, which in this view is covered by the insulating element 16. For easier illustration, its construction is shown in dashed outline. The contact piece 20 is connected fixedly to the mobile unit 10 either in a form-fitting, force-fitting and/or material-fitting manner.

The contact 20 is preferably designed as a flat part and is made of an electrically conductive material, preferably aluminum or copper.

detailed views of different embodiments of the contact 20 are shown in fig. 4a-c, together with the respective contact areas, the contact surfaces and the markings of the surface normals. In the following, reference is made to the other figures if the individual elements of the contact 20 are not shown in these figures for reasons of intuition.

In the open position, the contacts 20 rest on the housing 12. In this position, the contact 20 has a surface 20' which points in the direction of the receptacles 22a,22b of the webs 4a, b. As can be seen in the configuration according to fig. 1, the surface normal 20a of this surface is substantially parallel to the direction of movement shown by the arrow 30 when the contact piece 20 is moved from the open position into the closed position.

It can also be seen that the contact 20 has at least two contact regions 24a, b spaced apart from one another, which are spaced apart from one another in a direction perpendicular to the direction of movement indicated by the arrow 30, preferably also in a direction perpendicular to the height direction of the contact 20. The contact regions 24a, b can be embodied according to fig. 1, in particular opposite each other with respect to a center axis of the contact piece 20 extending parallel to the direction of movement. Thus, contact areas 24a and 24b are provided on both sides of the center axis of the contact 20.

the contact surfaces 26a,26b,26c,26d of the contact areas 24a,24b of the contacts 20 provided for establishing electrical contact with the webs 4a,4b likewise each have a surface normal 20 b. These respective surface normals are substantially perpendicular to the surface normals 20a of the surfaces 20' of the contacts 20 pointing in the direction of the receptacles 22a,22 b.

The substantially square contact 20 according to fig. 1 thus has at least four contact surfaces 26a,26b,26c,26d, by means of which an electrical connection can be established between the connection plates 4a,4 b. The first and second contact surfaces 26a and 26b are arranged on the contact region 24a, whereas the third and fourth contact surfaces 26c and 26d of the contact piece 20 are arranged on the contact region 24 b. The first and second contact surfaces 26a,26b and the third and fourth contact surfaces 26c,26d are arranged at a distance from one another depending on the layer thickness or the height of the contact piece 20. The first and second contact surfaces 26a,26b and the third and fourth contact surfaces 26c,26d are also each arranged substantially parallel to each other and substantially parallel to the direction of movement of the contact 20.

The contact surfaces 22a ', 22a ", 22 b', 22 b" of the connecting plates shown in fig. 2, which are arranged in the recesses 22a and 22b, extend, in particular substantially parallel to one another, into the receptacle. The distance of the contact surfaces 22a ', 22a ", 22 b', 22 b" of the receiving portions is here preferably substantially equal to the distance between the first and second 26a,26b or third and fourth 26c,26d contact surfaces of the contact 20, which distance may be equal to the height of the contact 20 in the contact area 24a, b. The mutual distance of the contact areas 24a, b is also preferably substantially equal to the mutual distance of the indentations 22a,22 b. This ensures that the two contact areas 24a, b are arranged in the notches 22a,22b in the closed position.

the displacement element 10 is at least partially made of an insulator, preferably at least partially made of plastic, for the purpose of insulation.

it can also be seen that the two connecting pieces 2a,2b of the two connecting plates 4a,4b protrude from the housing 12. The webs 4a,4b also extend into the interior of the housing 12. Inside the housing 12, the webs 4a,4b extend parallel to one another, which extend parallel to the displacement direction along the axis II-II into their contact regions 18a, b, in which the webs 4a,4b each have at least one recess 22a,22 b. The webs 4a,4b can in particular be arranged in such a way as to extend directly over the edge of the housing 12. The webs 4a,4b can also advantageously be arranged at least partially inside the recesses 28a, b, respectively, of the housing 12.

The recesses 22a,22b of the webs themselves are preferably open in the direction of the contacts 20 in the form of hooks and/or U-shapes and have a base.

In order to effectively prevent the electrical contact of the contact 20 with the webs 4a,4b in the open state of the electrical closer 1, an insulating element 16 is arranged between the notches 22a,22b located in the contact areas 18a, b of the webs 4a,4b and the contact 20.

The insulating element 16 is preferably constructed in two parts, in particular from two insulating caps 16a,16b, which are mounted on the displacement element 10. The insulating caps 16a,16b preferably have not only the low conductivity and high breakdown strength necessary for insulation purposes, but also advantageously have low tear strength, breaking strength and shear strength.

the latter characteristics are desirable since it is preferably provided that, when the pulse is triggered by the drive unit 8, the contact 20 breaks the insulating caps 16a,16b at least in the region directly adjoining the notches 22a,22b of the webs 4a,4b in the open position when the contact 20 is accelerated in the direction of the contact regions 18a, b. It is therefore preferred to provide the separation of the insulating caps 16a,16b at least in the interface region between the insulating caps 16a,16b and the surfaces of the contact pieces 4a,4b pointing in the direction of the insulating caps 16a,16 b. The insulating caps 16a,16b are at least partially detached, preferably split or sheared off, in particular on the webs 4a,4 b.

The shape of the contact 20 may also be adjusted in order to allow the insulation caps 16a,16b to be easily broken. For example, the contact piece 20 can have a chisel-shaped or wedge-shaped reduction at its end facing away from the drive device 8.

It can also be advantageous if the insulating caps 16a,16b additionally have, in addition to a low breaking strength, a shearing strength and a tear strength, predetermined breaking points (not shown here), which are preferably arranged in potential contact regions of the insulating caps 16a,16b with the contact 20 and with the webs 4a,4b, in particular with the surfaces of the contact strips 4a,4b pointing in the direction of the insulating caps 16a,16 b. The insulating caps 16a,16b can thus advantageously be broken through by the contact elements 20 and sheared off by the webs 4a,4b more easily when the drive unit 8 is pulsed.

fig. 2 shows a cross-sectional view of the electrical closer 1 taken along the line II-II in fig. 1. In this view, the design of the contact 20 can also be seen, which is arranged fixedly on the displacement element 10 and is covered in the view according to fig. 1 by insulating caps 16a,16b for the insulation of the contact 20. The moving direction of the contact 20 extends from the moving member 10 to the direction of the notches 22a,22 b. After the pulse triggering of the drive unit 8, the contact piece 20 is accelerated in the direction of the cut-outs 22a, b. Simplified to the contact piece 4b shown in cross-section, it is provided that after acceleration of the contact 20a burst is made of at least a part of the insulating cap 16b, so that an electrical contact can be established between the contact surfaces 26c, d of the contact 20 and the contact surfaces 22 b' and 22b "of the web. From the moment when the electrical contact between the contact 20 and the connecting plate 4b is established, the contact 20 is preferably guided into the recess 18b in the direction of movement. The movement of the contact piece 20 caused by the drive unit 8 is thereby braked continuously by the increasingly larger contact surfaces and thus the higher frictional forces between the contact surfaces 26c, d of the contact piece 20 and the contact surfaces 22', 22 ″ of the web 4 b.

After the pulse triggering of the drive unit 8, corresponding movements and contacts are also made between the contact surfaces 26a, b of the contact piece 20 and the contact surfaces 22 a' and 22a ″ of the connection plate, which are not shown in this view.

Fig. 3 shows a cross-sectional view of the electrical closer 1 taken along the line III-III in fig. 2. In this view, the design of the contact piece 20 can also be seen, which is arranged in an insulated manner from the connecting webs 16a,16b in the open state of the electrical closer 1, also by means of the insulating caps 16a,16 b.

Fig. 4a-c show one of the options for different embodiments of the contact 20 that should not be understood as critical.

fig. 4a shows a substantially square contact 20 comprising contact areas 24a and 24b arranged spaced apart from each other. The contact regions 24a, b are arranged on the outer edge region of the contact 20 and each have a contact surface 26a and 26b or 26c and 26d, respectively, which are arranged on mutually opposite sides of the contact 20.

A surface 20' can also be seen which, in the mounted state of the contact 20, points in the direction of the receptacles 22a and 22 b. A surface normal 20a of this surface is also shown, which extends substantially parallel to the displacement direction when the contact element 20 is moved from the open position into the closed position.

Two faces 20b and 20c, each arranged perpendicularly to face 20a, can also be seen together with their respective face normals. The face normal 20b is located vertically on the wide surface of the contact 20. The surface normal 20c is located perpendicularly on the outwardly pointing surface of the contact 20.

fig. 4b shows, in addition to the embodiment according to fig. 4a, which is designed as a square flat part, an embodiment of the contact element 20 in which the end of the contact element 20 facing away from the drive is designed with a tapering, in particular a chisel-shaped or pin-shaped tapering. This embodiment not only has the advantage that the insulating caps 4a,4b can be broken more easily when the drive 6 is triggered, but also achieves an interference connection between the contact 20 and the recesses 22a,22b of the connecting webs 16a,16b by virtue of the fact that the reduced portion of the contact 20 can be introduced into the recesses 22a,22b in a simple manner, even with given manufacturing tolerances. By means of the interference connection, it is achieved that the surfaces to be contacted of the parts are at least partially freed from contamination or passivation by friction when contact is established, thereby ensuring a high-quality contact. The embodiment according to fig. 4b has, in addition to the contact regions 24a and 24b, a third contact region arranged between these two regions, so that in this case not only four contact surfaces are provided, but in total six contact surfaces are provided together with the contact surfaces 26 a-f.

Fig. 4c finally shows an embodiment in which the contact piece 20 has locking tabs and locking notches in the contact regions 24a and 24b, which serve in particular to prevent the electrical closer 1 from opening after the closure 1 has been closed. This is achieved in particular in that the contact piece 20 and the recesses 22a,22b of the webs 4a,4b are designed such that the contact piece 20 is preferably positively locked in the receptacle in the closed position of the closer 1. Of course, the corresponding locking tabs and locking notches can be arranged not only on the contact surfaces 26a and 26c, but also alternatively or in a superimposed manner on the contact surfaces 26b and 26 d.

Fig. 5 finally shows a spatial view of the electrical closer 1 in the closed position.

In the closed position, the contact 20, in particular the contact regions 24a, b of the contact 20, are arranged in the recesses 22a,22b of the connecting plate.

The electrical contact between the two terminal plates 4a,4b is established by the direct contact of the contact surfaces 26a, b, c, d of the contact with the contact surfaces 22a ', 22a ", 22 b', 22 b" of the recess, so that an electrical charge can be safely and reliably conducted through the two interconnected terminal plates 4a,4 b.

In this position, the contact 20 is arranged in the receptacle of the connection plate 4a,4b and is thus short-circuited. The residual charge can also be discharged by short-circuiting the connection plates 4a,4b, as may be required in the event of a motor vehicle accident. It can be seen that the insulation caps 16a,16b are partially separated on the webs 4a,4b, whereby only remnants 16a ', 16 b' of sheared-off insulation caps remain on the contact surfaces between the webs 4a,4b and the insulation caps 16a,16 b. The remaining portions of the insulative caps 16a,16b are ultimately disposed between the contacts 20 and the walls of the housing 12.

The triggering of the movement takes place in particular in the drive unit 8. After, for example, an electrical pulse is initiated, a further electrical, mechanical, hydraulic or pneumatic pulse is triggered in the drive unit 8, which accelerates the displacement unit 10 with the arranged contact pieces 20 in the direction of the contact regions 18a, b of the connection plates 4a,4 b. The displacement unit 10 can be designed as a displacement slide or piston which pushes the contact piece 20 into the receptacle in the displacement direction.

During this movement, the contact 20 first breaks the insulating caps 16a,16b arranged between the drive 6 and the contact regions 18a, b before the contact 20 finally enters the recesses 22a,22b of the webs 4a,4 b.

fig. 6 shows a cross-sectional view of the electrical closer 1 taken along the line IV-IV in fig. 5. Due to the cross-sectional offset, the established electrical contact between the contact surfaces 26c, d of the contact 20 and the contact surfaces 22 b' and 22b "of the connection plate can be seen in this view. In the contact regions 18a, b of the web 4b, in addition to the contacts 20 arranged in the recesses of the web 4b, the section of the insulating cap 16 b' cut off at the web 4b is visible.

Fig. 7 shows a cross-sectional view of the electrical closer 1 taken along the line VII-VII in fig. 6. In this illustration, the section of the insulating caps 16a ', 16 b' cut through the webs 4a,4b is also visible in addition to the contacts 20 arranged in the cutouts of the webs 4a,4 b.

By means of the electrical closer 1 according to the invention, a fast and high-quality electrical connection can also be established between the connection plates according to the invention, so that it is ensured that the residual charge is conducted out as quickly and safely as possible.

The electrical closer 1 proposed by the invention is not only electrically well insulated and mechanically fail-safe, but also achieves a reproducible and satisfactory contact between the contact piece and the connecting plate.