Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
  • H01T4/00—Overvoltage arresters using spark gaps
  • H01T4/06—Mounting arrangements for a plurality of overvoltage arresters
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
  • H01R13/66—Structural association with built-in electrical component

Definitions

• the invention relates to an overvoltage protection magazine or plug and a method for producing an overvoltage protection magazine or plug.
• an overvoltage protection magazine comprising a plastic housing, electrical contacts, overvoltage protection elements and at least one contact comb, wherein the electrical contacts are arranged in the plastic housing and each have a Einsteck Scheme and a contact region, wherein the electrical contacts in the insertion region are arranged in a row, the plastic housing has receptacles for the overvoltage protection elements, which are arranged on both sides along the longitudinal direction, wherein the contact areas of the electrical contacts protrude into the respective receptacle and establish a first electrical contact to the respective overvoltage protection element and the contact comb resilient contact elements in Area of the receptacles, which establish the second contact to the overvoltage protection element.
• the overvoltage protection elements are designed as 2-pole surge arresters.
• the contacts are preferably formed as a contact grid and injected into the plastic housing, which are punched through openings in the plastic housing, whereas the contact comb is formed with earth contacts and forms the ground terminal.
• overvoltage protection magazines which comprise a printed circuit board on which the overvoltage protection elements are arranged.
• the plug-in contacts are formed as free cuts of the printed circuit board, on which contact pads are arranged.
• a disadvantage of these overvoltage protection magazines are their relatively high costs, because of the required high plug rate high quality requirements are placed on the circuit board and the contact pads.
• the invention is based on the technical problem of providing an overvoltage protection magazine or plug and a method for producing an overvoltage protection magazine or plug which is compact and inexpensive in construction.
• the overvoltage protection magazine or plug comprises a housing, at least one surge arrester, line contacts, at least one ground contact and a carrier for the surge arrester, wherein the carrier is designed as a plastic injection molded part, wherein the line contacts and the at least one ground contact are partially injected into the plastic injection molded part.
• the carrier is designed as a plastic injection molded part, wherein the line contacts and the at least one ground contact are partially injected into the plastic injection molded part.
• the line contacts are formed as at least one contact grid, which are punched free through openings in the carrier.
• the advantage of a contact grid is that only one part has to be aligned in the injection mold.
• the line contacts each have a plug-in area and a contact area, wherein the plug-in areas are not encapsulated.
• the insertion regions are arranged in a row and the contact regions and the insertion regions lie in one plane.
• the line contacts in the contact grid are connected via a common crosspiece, wherein below the crosspiece, the insertion areas and above the crossbar, the contact areas are arranged, wherein in pairs a contact area is connected by a straight connecting web with the crossbar and the other contact area via a doubly angled connecting web is connected to the transverse web, wherein the first bend in the region of the transverse web leads the connecting web in a plane parallel to the plane of the contact areas and the second bend in the region of the contact areas leads back the connecting web in the plane of the contact areas, wherein the doubly angled connecting webs are longer than the straight connecting webs.
• the overvoltage protection magazine has two earth contacts, which are connected to one another via a transverse web, wherein the transverse web runs between the contact regions of the line contacts, without touching their connecting webs. This is particularly easy because the longer connecting webs extend in a recessed parallel plane, so that the ground contacts can lie in the same or almost the same level as the contact areas or insertion areas of the line contacts.
• the contact regions are formed as rectangular contact strips, wherein pairwise associated contact strips are arranged one above the other in alignment.
• the carrier has depressions, wherein the contact regions are arranged in the bottom region of the depression.
• plastic is injected between the contact areas in the recess, which serves in particular to stabilize the long, two-fold angled connecting webs.
• the lower side of the carrier has a recess between two insertion regions of the line contacts, as a result of which the dielectric strength can be increased.
• the housing has intermediate walls, between which the surge arresters are arranged. This prevents a loosening surge arrester from disturbing the adjacent surge arresters and in particular from generating short circuits.
• the rear side of the carrier forms a housing wall.
• the surge arresters are designed as SMD components.
• the surge arresters are designed as three-pole surge arresters, so that one surge arrester per double conductor is required in each case.
• FIG. 1 is a perspective view of a contact grid
• 3a is a perspective view of contact gratings and ground contacts before encapsulation with plastic
• FIG. 3b is a side view of the arrangement of FIG. 3a
• Fig. 4 is a front perspective view of a carrier without
• Fig. 5 is a front perspective view of the carrier with
• FIG. 6 is a perspective rear view of a housing
• Fig. 7 is a front perspective view of an assembled
• FIG. 1 shows a contact grid 10 for twenty line contacts 10a (see FIG. 3a) for a 10-DA overvoltage protection magazine, wherein the twenty line contacts 10a are initially connected via a common crossbar 11 connected to each other. Below the cross bar 11 thus twenty insertion portions 12 of the line contacts 10 a are arranged, which are all arranged in a row R. The insertion areas 12 are then inserted into interfaces 51 of a terminal block 50 (FIG. 9), which are designed, for example, as isolating or fork contacts. Above the transverse web 11 contact areas 13a, 13b are arranged, which serve to contact surge arresters 35 (FIG. 5). Thus, ten contact regions 13a and ten corresponding contact regions 13b are provided for the ten surge arresters 35.
• the contact regions 13a are connected to the transverse web 11 via a short, straight connecting web 14a.
• the contact areas 13b are connected to the transverse web 11 via a doubly angled connecting web 14b.
• the insertion regions 12 and the contact regions 13a, 13b lie in a plane E1 (see FIG. 3b).
• the first bend 15 in the region of the transverse web 11 leads the connecting web 14b into a parallel plane E2 (see FIG. 3b) to the plane E1 of the contact regions 13a, 13b.
• the second bend 16 leads the connecting web 14b back into the plane El of the contact regions 13a, 13b and at the same time displaces the contact region 13b somewhat to the left, so that the contact regions 13a, 13b are arranged in alignment with one another.
• the crossbar 11 is formed with holes 17, in the retaining pins of an injection molding tool are inserted to hold the contact grid 10 defined in the injection mold.
• the distance between two adjacent holes 17 on the transverse web 11 corresponds approximately to twice the distance between two adjacent insertion regions 12.
• the earth rail 20 includes two ground contacts 21, which are designed as fork contacts.
• the two earth contacts 21 are connected to each other via a transverse web 22, wherein the transverse web 22 in the region of the earth contacts 21 each have a bend 23, so that earth contacts 21 and cross bar 22 lie in different planes, which are however parallel.
• contact grid 10 and ground rail 20 are shown in FIG. 3a, as they would be arranged together in an injection molding tool.
• the transverse web 22 of the earth rail 20 lies in a plane E3 (see FIG. 3b) between the plane El of the contact regions 13a, 13b and the plane E2 of the connecting webs 14b, so that the transverse web 22 does not touch the connecting webs 14b.
• the crossbar 11 is punched free between two connecting webs 14a, 14b, wherein the free-punching process, however, takes place only after the injection process.
• ten separate plug-in regions 12 with the contact regions 13a and ten separate plug-in regions 12 with the contact regions 13b are formed by the free-punching process.
• a carrier 30 is shown, in which the contact grid 10 and the ground rail 10 are partially injected, wherein the Einsteck Schemee 12 and the two ground contacts 21 are not encapsulated. Above the ground contacts 21, the carrier is slightly wider to increase the stability. Furthermore, free-distance openings 31 can be seen, through which the contact grid 10, as shown in Fig. 3, is punched free.
• the support 30 also has recesses 32, the contact areas 13b, 13a and in each case a part of the transverse web 22 of the earth rail 20 being exposed in the floor area on the surface. Between the contact areas 13a, 13b and the ground rail 20 are injection-molded plastic strips 33, which stabilize the connecting webs 14b (see FIG. 1).
• the thick plastic webs 34 that form between the recesses 32 additionally stabilize the earth rail 20 (see FIG. 2).
• the underside 52 of the carrier 30 is formed with indentations 53 in order to increase the dielectric strength.
• the carrier 30 is shown equipped with three-pole surge arresters 35, which are arranged in the respective recesses 32.
• the two outer poles 36, 37 of the surge arrester 35 are connected to the contact regions 13a, 13b and the middle ground contact 38 is connected to the crossbar 22.
• the connection can be realized for example by soldering, laser welding or gluing.
• FIG. 6 shows a housing 40 for an overvoltage protection magazine for receiving the carrier 30.
• the housing 40 has intermediate walls 41, between which the individual surge arresters 35 are arranged, when the carrier 30 is inserted into the housing 40.
• the rear side 39 of the carrier 30 forms almost completely a side wall of the housing 40, which can be seen in FIG.
• the housing 40 is closed by a cover strip 42 (see Fig. 7).
• the housing 40 has at the bottom 43 two dome 44, through which the ground contacts 21 are guided, wherein by means of the dome 44, the
• Overvoltage protection magazine 1 (see FIGS. 8 and 9) locked in a terminal block 50. The completely assembled
• Overvoltage protection magazine 1 is shown in Fig. 7, wherein a part of the carrier 30 opposite side wall is broken away, so that the position of the surge arrester 35 between the intermediate walls 41 can be seen.
• the insertion of the overvoltage protection magazine 1 in the terminal block 50 is shown in Figs. 8 and 9.
• Fig. 9 the interfaces 51 of the terminal block 50 for receiving the Einsteck Schemee 12 can be seen. LIST OF REFERENCE NUMBERS

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• 2009
  • 2009-02-27 DE DE102009010929A patent/DE102009010929A1/de not_active Withdrawn
  • 2009-12-18 MX MX2011008976A patent/MX2011008976A/es active IP Right Grant
  • 2009-12-18 KR KR1020117019759A patent/KR20110133553A/ko not_active Application Discontinuation
  • 2009-12-18 US US13/203,430 patent/US20110310517A1/en not_active Abandoned
  • 2009-12-18 EP EP09808988A patent/EP2401795A1/de not_active Withdrawn
  • 2009-12-18 CN CN2009801568029A patent/CN102318153A/zh active Pending
  • 2009-12-18 AU AU2009340812A patent/AU2009340812A1/en not_active Abandoned
  • 2009-12-18 RU RU2011139338/07A patent/RU2480877C1/ru not_active IP Right Cessation
  • 2009-12-18 WO PCT/EP2009/009163 patent/WO2010097109A1/de active Application Filing
• 2011
  • 2011-08-25 ZA ZA2011/06254A patent/ZA201106254B/en unknown
  • 2011-08-26 CL CL2011002101A patent/CL2011002101A1/es unknown

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