Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
  • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
  • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
  • H01H83/223—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with bimetal elements
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
  • H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches
  • H01H11/0031—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches for allowing different types or orientation of connections to contacts

Definitions

• the present invention relates to an arrangement for mechanically coupling an overload relay to a contactor, the overload relay having at least one protruding hook intended for insertion into a coupling opening provided on the housing of the contactor and having at least one molded on two sides of the flat end region of the hook facing away from one another Has latch part and carries at least one protruding, provided for insertion into the terminal of the contactor and for holding therein, electrically conductive connecting pin.
• connection clamps for contactors with clamping brackets or with clamping claws.
• clamping brackets the connecting pin of the overload relay to the contactor of the contactor is pulled up from below, whereas with the clamps, we push it down to the connector of the contactor from above.
• the two types of coupling therefore result in a difference in the relative height between overload relay and contactor.
• the elastically deformable hooks on the overload relay for the two types of connecting terminals of the contactors must be attached at different heights.
• this requires the manufacture of two different types of overload relays and a corresponding inventory.
• the object of the present invention is to propose a universally usable arrangement for mechanically coupling an overload relay to a contactor, both for contactor connections with clamping brackets and can be used in contactor connections with clamping claws and can thereby avoid the economic disadvantages of the known arrangements.
• the hook is stiff and the coupling opening arises from a central opening provided for the insertion of the entire end region of the hook with the locking part in the connecting direction and on both sides of the central opening in the pulling direction of the connecting terminals of the contactor, for receiving the flat slots formed immediately behind the bolt part of the hook, the bolt when connecting the connecting pins to a contactor with clamping claws the edge of the slot facing away from the connecting terminals and when connecting the connecting pins to a contactor with pulling brackets the edge of the slot facing the connecting terminals engages behind.
• This arrangement can be used universally and allows the connection of a single overload relay to contactors with both drawbar connections and with clamp claw connections.
• the contactor housings remain unchanged with the exception of the design of the electrical connections.
• the electrical connections of the contactor can be chosen independently of the overload relay to be connected.
• the hook inserted operationally into the coupling opening advantageously has a stop on the lower part of the contactor housing at its lower end, which is turned away from the locking part and immediately behind the flat end region located in the slot, preventing the hook from being pushed further into the coupling opening.
• the stop ensures the exact position of the overload relay in relation to the contactor.
• An overload relay 1 is shown in perspective in FIG.
• the overload relay 1 is provided for mechanical coupling to a contactor 2 (Fig.2).
• the overload relay 1 has a protruding hook 3.
• a laterally projecting locking part 5 is formed on the flat end region 4 of this hook 3.
• the central opening 7 is provided for the introduction of the entire end region 4 of the hook 3 with the locking part 5.
• the slots 8, 9 are only so wide that only the flat end region 4 of the hook 3, which lies immediately behind the locking part 5, fits into it.
• the overload relay 1 is provided with electrically conductive connection pins 10 provided for the electrical and mechanical connection of the overload relay 1 to the contactor 2.
• the contactor 2 is provided with electrical connecting terminals 11 equipped with clamping claws 12.
• the active parts of a connecting terminal 11 with clamping claws 12 are shown outside the contactor 2 in order to be able to better recognize the details of the connecting terminal 11.
• the overload relay 1 is mechanically coupled to the contactor 2 by inserting the end region 4 of the hook 3 into the central opening 7 of the coupling opening and the connecting pins 10 under the clamping claws 12. Then the screws 13 of the connection terminals 11 are tightened. When the screws 13 are tightened, the connecting pins 10 with the clamping claws 12 and thus also the entire overload relay 1 are pressed downward in the tightening direction of the connecting terminals 11. With this relative displacement between the overload relay 1 and the contactor 2, the flat end region 4 of the hook 3 is pressed into the slot 9 of the coupling opening facing away from the connecting terminals 11. The locking part 5 of the hook 3 engages behind the edge of the slot 9.
• connection pins 10 of the overload relay 1 are held in the connection terminals 11.
• the latch part 5 of the hook 3 engaging behind the edge of the slot 9 holds the overload relay 1 firmly on the contactor.
• the hook 3 is connected to the lower part 6 of the housing of the Contactor 2 provided stop 14. This stop 14 lies immediately behind the flat end region 4 of the hook 3 located in the slot 9.
• the overload relay 1 coupled to the contactor 2 is shown in FIG.
• the overload relay 1 shown in FIGS. 4, 5 and 6 is identical to that shown in FIGS. 1, 2 and 3 and also bears the same reference numbers.
• the contactor 15 visible in FIGS. 4, 5 and 6 differs from the contactor 2 of FIGS. 1, 2 and 3 only in the connection terminals 16.
• the lower parts 6 of the contactors 2 and 15 are identical and therefore have the same reference numbers.
• the terminal 16 of the contactor 15 is shown in Figure 5 next to the contactor 15 alone.
• This connection terminal 16 has a pull bracket 17.
• the connecting pins 10 of the overload relay 1 are inserted into the opening 18 of the pull bracket 17.
• the hook 3 is pushed into the central opening 7 on the lower part 6 of the contactor 15 as far as the stop 14.
• the screws 19 of the connection terminals 16 are tightened.
• the rigid connecting pins 10 and thus also the overload relay 1 carrying them are moved in the direction of the connecting terminals 16.
• the flat end region 4 of the hook 3 slides into the slot 8 facing the connection terminals 16 in the lower part 6 of the contactor 15.
• the connection pins 10 are held in the connection terminals 16 and the locking part 5 of the hook 3 engages behind the edge of the slot 8, where it holds.
• the overload relay 1 is thus mechanically and naturally also electrically coupled to the contactor 15.
• the coupling can be released again by loosening the screws 19 of the connection terminals 16.

Landscapes

• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Connections Arranged To Contact A Plurality Of Conductors (AREA)
• Breakers (AREA)
• Relay Circuits (AREA)
• Protection Of Generators And Motors (AREA)
• Switch Cases, Indication, And Locking (AREA)
• Control Of Electric Motors In General (AREA)

Applications Claiming Priority (3)

Publications (3)

Family

ID=4220351

Family Applications (1)

Country Status (7)

Families Citing this family (15)

Family Cites Families (3)

• 1998
  • 1998-01-07 US US09/003,992 patent/US6034584A/en not_active Expired - Lifetime
  • 1998-02-07 ES ES98102152T patent/ES2216190T3/es not_active Expired - Lifetime
  • 1998-02-07 DE DE59811263T patent/DE59811263D1/de not_active Expired - Fee Related
  • 1998-02-07 EP EP98102152A patent/EP0896351B1/de not_active Expired - Lifetime
  • 1998-02-07 AT AT98102152T patent/ATE265740T1/de not_active IP Right Cessation
  • 1998-02-07 PT PT98102152T patent/PT896351E/pt unknown
  • 1998-02-07 DK DK98102152T patent/DK0896351T3/da active

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