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KR-20260067347-A - CONTACT ARRANGEMENT COUNTERACTING LIFT-OFF

KR20260067347AKR 20260067347 AKR20260067347 AKR 20260067347AKR-20260067347-A

Abstract

The present invention relates to a contact array (1), wherein the contact array comprises: a fixed proximal contact array (2) having a fixed proximal fixed contact section (2a); a fixed distal contact array (4) having a fixed distal fixed contact section (4a); and a contact bridge (6a) movable in a switching direction (8) from an open position (10a) to a closed position (10b), wherein the contact bridge contacts the fixed proximal and distal contact sections in the closed position (10b) to electrically connect them to each other, and is spaced apart from the fixed proximal and distal contact sections in the open position; the fixed proximal contact array has a proximal base (14), and the fixed distal contact array has a distal base (16); A fixed proximal contact protrudes from a proximal base toward a distal base, and a fixed distal contact protrudes from a distal base toward a proximal base; the contact bridge is arranged at a height (18a) in the opening/closing direction in at least a closed position, the height being located between the height (18b) in the opening/closing direction of the proximal base and the height (18c) in the opening/closing direction of the fixed proximal contact, and also between the height (18d) in the opening/closing direction of the distal base and the height (18e) in the opening/closing direction of the fixed distal contact. Such a contact arrangement or switching device reduces the risk of the contact bridge being lifted up in the event of a short circuit, thereby preventing the formation of arcs.

Inventors

  • 바이겔, 크리스트프리드

Assignees

  • 티이 커넥티비티 솔루션스 게엠베하

Dates

Publication Date
20260512
Application Date
20251104
Priority Date
20241105

Claims (15)

  1. As a contact array (1) for a switching device (56) such as a relay or contactor, A fixed proximal contact array (2) having a fixed proximal contact section (2a), A fixed distal contact array (4) having a fixed distal contact section (4a), A contact bridge (6a) capable of moving in a switching direction (8) from an open position (10a) to a closed position (10b), wherein the contact bridge contacts the fixed proximal and distal contact sections (2a, 4a) in the closed position (10b) and electrically connects them to each other, and wherein the contact bridge is spaced apart from the fixed proximal and distal contact sections (2a, 4a) in the open position (10a). The fixed proximal contact array (2) has a proximal base (14) and the fixed distal contact array (4) has a distal base (16), the fixed proximal contact section (2a) protrudes from the proximal base (14) in the direction of the distal base (16) and the fixed distal contact section (4a) protrudes from the distal base (16) in the direction of the proximal base (14). The contact bridge (6a) is arranged at a height (18a) in the switching direction (8) at least in the closed position (10b), and the height is between the height (18b) in the switching direction (8) of the proximal base (14) and the height (18c) in the switching direction (8) of the fixed proximal contact section (2a), and between the height (18d) in the switching direction (8) of the distal base (16) and the height (18e) in the switching direction (8) of the fixed distal contact section (4a). Contact array.
  2. In Article 1, The proximal base (14) and the distal base (16) face each other in the reference direction (11), and the direction (64) in which the switching contacts (62) of the contact bridge (6a) are spaced apart from each other is perpendicular to the switching direction (8) and extends at an angle (66) with respect to the reference direction (11). Contact array.
  3. In Article 2, The above angle (66) is 90°, Contact array.
  4. In any one of paragraphs 1 to 3, The fixed proximal contact array (2) has an additional fixed proximal contact section (2b), and the fixed distal contact array (4) has an additional fixed distal contact section (4b). The fixed proximal contact section (2a) is connected to the additional fixed proximal contact section (2b) through the proximal base (14), and the fixed distal contact section (4a) is connected to the additional fixed distal contact section (4b). It has an additional contact bridge (6b) movable in the switching direction (8) from an additional open position (12a) to an additional closed position (12b), wherein the additional contact bridge contacts the additional fixed proximal and distal contact sections (2b, 4b) in the additional closed position (12b) and electrically connects them to each other, and wherein the additional contact bridge is spaced apart from the additional fixed proximal and distal contact sections (2b, 4b) in the additional open position (12a), The additional contact bridge (6b) is positioned at least in the additional closed position (12b) at a height (18f) in the switching direction (8), and the height is between the height (18b) in the switching direction (8) of the proximal base (14) and the height (18g) in the switching direction (8) of the additional fixed proximal contact section (2a), and between the height (18d) in the switching direction (8) of the distal base (16) and the height (18h) in the switching direction (8) of the additional fixed distal contact section (4a). Contact array.
  5. In any one of paragraphs 1 to 4, The fixed proximal contact section (2a) is spaced apart from the proximal base (14) by a first proximal offset (22a), and the fixed distal contact section (4a) is spaced apart from the distal base (16) by a first distal offset (24a) in the switching direction (8), and/or The additional fixed proximal contact section (2b) is spaced apart from the proximal base (14) by a second proximal offset (22b), and the additional fixed distal contact section (4b) is spaced apart from the distal base (16) by a second distal offset (24b) in the switching direction (8). Contact array.
  6. In Article 5, The first proximal offset (22a) and the first distal offset (24a) are identical, the second proximal offset (22b) and the second distal offset (24b) are identical, and the first proximal offset (22a) and the first distal offset (24a) are different from the second proximal offset (22b) and the second distal offset (24b). Contact array.
  7. In any one of paragraphs 1 through 6, The above proximal and/or distal bases (14, 16) have at least one flat side (28) facing the switching direction (8), Contact array.
  8. In any one of paragraphs 1 through 7, The above proximal base (14) has at least one connecting means (34) for receiving and/or connecting at least one current conductor (32) and/or The above-mentioned distal base (16) has at least one connecting means (34) for receiving and/or connecting at least one current conductor (32). Contact array.
  9. In Article 8, The above at least one connecting means (34) includes a connecting tab (46) configured to be connected to the above at least one current conductor (32). Contact array.
  10. In Article 9, The above at least one connection tab (46) extends along the switching direction (8) in at least sections, Contact array.
  11. In Article 9 or Article 10, Each of the above-mentioned at least one connecting tab (46) does not intersect the planes spanned by the fixed proximal contact section (2a) and the fixed distal contact section (4a) and/or the planes spanned by the additional fixed proximal contact section (2b) and the additional fixed distal contact section (4b), Contact array.
  12. In any one of paragraphs 1 through 11, The above contact array (1) has transition sections (40), and the fixed proximal contact section (2a) and the additional fixed proximal contact section (2b) are each connected to the proximal base (14) through one of the transition sections (40), and and/or The fixed distal contact section (4a) and the additional fixed distal contact section (4b) are each connected to the distal base (16) through one of the transition sections (40), and The above transition sections (40) substantially extend along the switching direction (8), Contact array.
  13. In any one of paragraphs 1 through 12, At least one of the fixed contact arrays (2, 4) from the group of fixed contact arrays (2, 4) including the fixed proximal and distal contact arrays (2, 4) is formed monolithically. Contact array.
  14. In any one of paragraphs 1 to 13, A blow-out device (52) having at least one blow-out magnet (54), wherein the blow-out device (52) is designed to generate at least one magnetic field for deflecting arcs generated in the open position (10a) or the additional open position (12a). Contact array.
  15. As an electric switching device (56), A contact array (1) according to any one of claims 1 to 14, and A drive device (60) is provided, said drive device is designed to move a first contact bridge (6a) from a first open position (10a) to a first closed position (10b) in the switching direction (8) and a second contact bridge (6b) from a second open position (12a) to a second closed position (12b) in the switching direction (8). Electric switching device.

Description

Contact arrangement preventing lift-off {CONTACT ARRANGEMENT COUNTERACTING LIFT-OFF} The present invention relates particularly to a contact array for a switching device, such as a relay or contactor, for use in electromobility, and a switching device having such a contact array. Electrical switching devices, such as relays or contactors, are used to switch electric currents. Switching devices generally have a contact bridge that serves to open or close a circuit. When closed, the contact bridge makes contact with fixed contacts, whereas when open, it is separated from the fixed contacts. In the field of electric mobility, for example during charging or in a drive train, very high currents of up to 27 kA or more are generated during a short circuit. Such high currents generate a repulsive force that pushes the contact bridge away from the fixed contacts. When the contact bridge is pushed away from the fixed contacts, arcing may occur, which can damage or even destroy the switching device. Therefore, the contact bridge must maintain contact with the fixed contacts at least until the circuit fuse blows and trips. Therefore, the objective of the present invention is to provide a means to satisfy the requirements defined above. This objective is achieved by a contact array for switching devices such as relays or contactors, and the contact array is, A fixed proximal contact arrangement having a fixed proximal contact section, A fixed distal contact arrangement having a fixed distal contact section, It has a contact bridge movable in a switching direction from an open position to a closed position, the contact bridge contacts fixed proximal and distal contact sections in the closed position and electrically connects them to each other, and the contact bridge is spaced apart from the fixed proximal and distal contact sections in the open position, and A fixed proximal contact array has a proximal base, and a fixed distal contact array has a distal base, and a fixed proximal contact section protrudes from the proximal base toward the distal base, and a fixed distal contact section protrudes from the distal base toward the proximal base, and The contact bridge is arranged at a height in the switching direction that is between the height in the switching direction of the proximal base and the height in the switching direction of the fixed proximal contact section, and between the height in the switching direction of the distal base and the height in the switching direction of the fixed distal contact section, at least in the closed position. When electric current flows through the above contact array during operation, strong electromagnetic forces are generated, particularly in the region of the bases. Since the contact bridge is positioned between the bases and the fixed contact sections in the switching direction, at least in its closed position, these electromagnetic forces press the contact bridge against the fixed contact sections, which makes it more difficult for the contact bridge to lift off from the fixed contact sections and reduces the risk of arcing. The above invention can be further improved by the following features, each of which is advantageous in itself and can be combined with one another as desired. The proximal and distal bases can each be designed to be connected to a current conductor such as a busbar, terminal, contact bolt, contact pin, or electric plug. According to an advantageous embodiment, the proximal base and the distal base may face each other in a reference direction, and the direction in which the switching contacts of the contact bridge are spaced apart from each other may extend perpendicular to the switching direction and at an angle with respect to the reference direction. Such a contact arrangement is particularly compact in the reference direction. A particularly compact contact arrangement in the reference direction exists when the angle with respect to the reference direction is 90°. Of course, according to other embodiments, the contact bridge may also be extended at different angles, for example, at an angle of approximately 45° with respect to the reference direction. The switching contacts of the contact bridge can be designed to be positioned against a fixed proximal contact section or a fixed distal contact section in a closed position. In particular, the contact bridge can contact the fixed proximal or distal contact section only through the switching contacts of the contact bridge in a closed position. The direction in which the switching contacts of the contact bridge are spaced apart from each other can correspond to the longitudinal direction of the contact bridge. If a fixed proximal contact section and a fixed distal contact section are adjacent to each other in at least sections with respect to the direction in which the switching contacts of the contact bridge are spaced apart from each other, and in particular overlap in at least sections, the contact array