Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
  • H01H21/54—Lever switches with blade-type contact co-operating with one or two spring-clip contacts, e.g. knife switch
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H1/00—Contacts
  • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
  • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
  • H01H1/365—Bridging contacts
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
  • H01R9/22—Bases, e.g. strip, block, panel
  • H01R9/24—Terminal blocks
  • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
  • H01R9/2625—Clip-on terminal blocks for side-by-side rail- or strip-mounting with built-in electrical component
  • H01R9/2633—Clip-on terminal blocks for side-by-side rail- or strip-mounting with built-in electrical component with built-in switch
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H1/00—Contacts
  • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
  • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
  • H01H1/42—Knife-and-clip contacts
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
  • H01R4/28—Clamped connections, spring connections
  • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
  • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
  • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
  • H01R4/4819—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end the spring shape allowing insertion of the conductor end when the spring is unbiased
  • H01R4/4821—Single-blade spring
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
  • H01R4/28—Clamped connections, spring connections
  • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
  • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
  • H01R4/484—Spring housing details
  • H01R4/4842—Spring housing details the spring housing being provided with a single opening for insertion of a spring-activating tool

Definitions

• Terminal block in particular isolating terminal
• the invention relates to a terminal block, in particular a disconnect terminal, with a terminal housing, with a two-piece busbar, with two conductor connection elements for connecting one conductor to a portion of the busbar and with a pivotally mounted in the terminal housing separating knife, wherein the two sections are connected to each other in a first position of the separating blade and separated from each other in a second position of the separating blade, and wherein the conductor connection elements remote from the ends of the sections of the busbar are bent such that in the first position of the separating blade, the end of the first section of the busbar, the cutting blade at an upper contact portion and the end of the second portion of the bus bar contacts the disconnecting blade at a lower contact area.
• the invention also relates to a circuit breaker with a disconnecting blade for pivoting arrangement in a terminal housing of a terminal block.
• Electrical terminal blocks have been known for decades and are used millions of times in the wiring of electrical systems and equipment.
• the terminals are usually snapped onto mounting rails, which in turn are often arranged in a plurality in a control cabinet.
• conductor connection elements predominantly screw terminals or tension spring terminals are used in terminal blocks.
• tail end clamps or leg spring clamps can also be used.
• the basic type of terminal block is the connection terminal, which has at least two conductor connection elements, which are electrically connected to one another via an electrically conductive connection rail, the busbar.
• this basic type which is often referred to as a feed-through terminal
• protective conductor terminals, knife disconnect terminals and installation terminals may be mentioned here.
• terminal blocks which are used in power converter measuring circuits of power generation and distribution, are often different Switching, separating and testing tasks to realize. According to their use, such terminal blocks are often referred to as Meßwandler- separating terminals.
• Meßwandler- separating terminals With the aid of a longitudinal circuit breaker arranged in the terminal housing of the isolating terminal, the two partial sections of the busbar can either be connected to one another or separated from one another.
• An electrical terminal in which two parts of a busbar can be separated via a separation point, is known from DE 41 06 555 Al.
• a double-level terminal which has two busbars running one above the other in the terminal housing, wherein both busbars can be separated by a separation point accessible from the top of the terminal block.
• the separation point is designed as a knife-separating point, which has a pivotally mounted in the housing separating knife.
• a current transformer disconnect terminal is known in which the separation point is formed by a rotatably arranged in the terminal housing contact disc.
• the separation point By forming the separation point as a contact disc, it is possible either to connect the two sections of the busbar with each other or to separate from each other. If the two sections of the busbar are separated from each other, then the transformer-side section of the busbar is electrically conductively connected via the contact disk to a contact piece additionally arranged in the terminal housing, whereby a shorting bridge can be inserted into this contact section. Due to the formation of the separation point as a contact disk, this separation clamp has relatively large dimensions. In addition, the B etuschists angle for securely pivoting the contact disc from the first position to the second position is relatively large.
• a disconnect terminal described above in which the separation point is formed by a pivotally mounted in the terminal housing separating blade.
• the separating knife is mounted with its lower end in a receptacle in the terminal housing, so that the cutting knife can be pivoted about this bearing point. While the separating knife contacted in the first position of both sections of the busbar is, contacted the cutting blade in the second position, only one of the two sections, so that the busbar is disconnected.
• a relatively large operating angle is also required in the case of this separating clamp.
• the present invention is therefore an object of the invention to provide a terminal described above, in which the switching of the circuit breaker space-saving as possible but still user-friendly and safe possible.
• the invention has for its object to provide a suitable longitudinal disconnect switch with a separating knife for pivotal arrangement in a terminal housing a terminal.
• the separating knife is angled so that the arranged below the pivot axis of the cutting blade from the end of the second section of the Busbar is bent away.
• the separating distance between the lower contact region and the end of the second section of the busbar is increased, so that a smaller operating angle is required to ensure a certain total separating distance between the two sections of the busbar.
• the separating knife is partially encapsulated by an insulating housing, wherein at least the upper contact area and the lower contact area are not surrounded by the insulating housing and thus can be contacted by the preferably designed as contact forks ends of the two sections in the first position of the separating knife ,
• the longitudinal disconnector thus consists of the separating blade and the insulating housing. Due to the fact that the separating knife is partially encapsulated by the insulating housing, both the operation and the assembly of the longitudinal circuit breaker can be simplified.
• the cutting blade with the insulating housing in the terminal housing can be inserted and defined there latched.
• the terminal block according to the invention can thus also as a kit consisting of the terminal housing with the arranged therein, of two sections existing busbar and the conductor connection elements on the one hand and the longitudinal circuit breaker on the other hand are sold, in which case the longitudinal circuit breaker is not engaged in the assembly of the terminal block in the terminal housing.
• a pivot is formed, which engages in the mounted state of the longitudinal disconnector in an opening in a side wall of the terminal housing.
• the leadership of the insulating housing in the terminal housing can be further improved in that the insulating housing is dimensioned, in particular has a width such that it is additionally guided during pivoting from the first position to the second position by the side walls of the terminal housing.
• a slight interference fit is preferably realized, which reliably prevents tilting of the insulating housing and thus also of the separating blade during pivoting. Since the side walls of the terminal housing have only a relatively small wall thickness, the side walls are sufficiently yielding, so that a deliberate pivoting of the longitudinal circuit breaker from the first position to the second position is not hindered by the interference fit.
• one or both side walls of the terminal housing have a guide groove and that on at least one side surface of the insulating housing, a guide pin or a guide web is formed, wherein the guide groove or the guide grooves are arranged so that the separating knife is automatically arranged in the second position after insertion of the insulating housing in the terminal housing.
• the formation of the guide grooves and the corresponding guide pins or guide webs thus ensures that the longitudinal circuit breaker can be inserted only in a certain orientation in the terminal housing.
• a guide pin which cooperates with a guide groove in a side wall of the terminal housing, can advantageously serve the molded on the insulating pivot.
• the insulating housing of the circuit breaker on at least one side surface has a locking pin and that in the corresponding side wall of the terminal housing two recesses corresponding to the locking pin are formed, in which the locking pin in the first position or in the locked second position of the cutting knife.
• the locking pin and the recesses are advantageously designed so that both in the first position and in the second position of the cutting blade a positive locking takes place, wherein the engagement of the locking pin in the recess by an acoustic click is clearly noticeable.
• an open-topped actuating shaft is formed in the insulating housing, in which a tool, in particular the tip of a screwdriver, can be inserted.
• a tool in particular the tip of a screwdriver
• the actuating shaft is preferably dimensioned so that for pivoting the longitudinal disconnect switch, a screwdriver can be used with which also operates the conductor connection elements, i. can be opened or closed.
• the actuating shaft preferably extends laterally offset to the above the pivot axis arranged region of the cutting blade. As a result, the actuating shaft can have a large depth, whereby the tip of a screwdriver is guided safely without the insulating housing must protrude substantially beyond the upper end of the cutting blade.
• actuating shaft in the insulating housing moreover creates the possibility, in the case of a plurality of juxtaposed modular terminals, of simultaneously actuating their longitudinal circuit breakers in which a switch connection is used which has at least two legs and a handle section connecting the legs.
• the individual legs of the switch connection are designed so that they can each be inserted into an operating shaft and preferably also lock.
• a shift lock is provided, which can be plugged into the terminal housing and locked in it for blocking the separating blade in one and / or the other position.
• the shift lock is preferably designed so that it only needs to be rotated by 180 ° in order to be able to be plugged into the terminal housing in one or the other positions of the cutting blade.
• the switching lock has a plugged in the insulating housing facing the open end, so that even when plugged lockout on a front side of the plastic housing printed symbol for indicating the position of the cutting blade from above by the shift lock is visible.
• the object with the features of claim 19 is achieved in that the pivot axis of the separating knife between the upper contact region and the lower contact region is arranged and that in a second position of the separating knife both the upper contact region of the separating knife from the end of first portion of the busbar and the lower contact portion of the separator is spaced from the end of the second portion of the busbar.
• FIG. 1 is a perspective view of a terminal block according to the invention, with partially omitted side wall,
• FIG. 2 is an enlarged view of the central region of the terminal block according to FIG. 1, with a circuit breaker in the first position
• FIG. 3 is an enlarged view of the central portion of the terminal block of FIG. 1, with a longitudinal circuit breaker in the second position
• FIG. 5 shows the two sections of the busbar of a terminal block which are electrically connected to one another via the separating knife
• FIG. 6 is an enlarged view of the middle portion of the terminal block, with a longitudinal circuit breaker in the first position and a shift lock used,
• FIG. 7 is an enlarged view of the central portion of the terminal block, with a longitudinal circuit breaker in the second position and a shift lock used,
• Fig. 8 is a perspective view of two adjacent to one
• Fig. 9 is a sectional view through the central region of a terminal block of FIG. 8, with inserted switch connection.
• the terminal block 1 shows a terminal block 1 according to the invention in the form of a disconnecting terminal, which can be used in particular as a measuring transducer isolating terminal in current transformer measuring circuits of power generation and distribution.
• the terminal block 1 has a generally made of plastic terminal housing 2, in which a two sections 3, 4 existing busbar and two conductor connection elements 5, 6 are arranged.
• Thenatianschlußelemen- te 5, 6 are formed in the illustrated embodiment as leg spring terminals, in each of which a conductor to be connected can be inserted through a formed in the terminal housing 2 Schaueinbowsöffhung 7.
• the conductor connection elements 5, 6 may also be designed as screw terminals, as tension spring terminals or as cutting terminals. With the help of the conductor connection elements 5, 6 can each one electrical conductor to a section 3, 4 of the busbar are connected.
• the ends 9, 10 of the two sections 3, 4 of the busbar are each formed as contact forks 13, between which the respective contact region 1 1, 12 of the separating blade 8 is inserted in the first position, the contact forks 13 and der Trennmesser. 8 are dimensioned so that a secure and good electrical contact is guaranteed.
• 0 are the contact fork 13 so bent or arranged to the separating knife 8, that the contact fork 13 impinge almost perpendicular to the two contact region 11, 12 of the cutting blade 8.
• the longitudinal disconnect switch is pivotally mounted in the terminal housing 2 of the disconnect terminal 1.
• the - in Fig. 4 separately shown - longitudinal disconnector has in addition to the separating blade 8 on an insulating housing 14 which is formed so that at least the upper contact portion 11 and the lower contact portion 12 of the separating blade 8 are not surrounded by the insulating housing 14.
• the connection of separating knife 8 and insulating housing 14 is thereby ensured that the separating knife 8 is encapsulated by the insulating housing 14.
• a pivot pin 15 is integrally formed on a side surface of the insulating housing 14, which is mounted in a corresponding opening 18 in a side wall 16 of the terminal housing 2.
• pivot 15 of the circuit breaker or the insulating housing 14 is also guided by the two side walls 16, 17 of the terminal housing.
• the width of the insulating housing 14 is selected so that it fits tightly in the inserted into the terminal housing 2 state on both side walls 16, 17 of the terminal housing 2.
• the pivot axis of the separating knife 8 that is, the pivot pin 15, between the upper contact portion 1 1 and the lower contact portion 12 is arranged.
• the separating knife 8 is still angled so that the below the pivot axis, i. below the pivot 5, arranged region of the cutting blade 8 is bent away from the end 10 of the second section 4, as also shown in FIGS. 3 and 7 can be seen.
• a total of an operating angle of only about 30 ° sufficient, so that on the one hand, the middle portion of the terminal 1 - and thus the terminal 1 total -small dimensions, on the other hand, the operation of the circuit breaker very easy and comfortable even in confined spaces is possible.
• a locking pin 19, formed by the separating knife 8 and the longitudinal disconnector both in the first position and in the second position in the terminal housing. 2 can be locked.
• two recesses 20 are formed in which the latching pin 19 facing side wall 16 of the terminal housing 2, in which the latching pin 19 is positively locked in the first position or in the second position of the cutting blade 8.
• the positive locking of the locking pin 19 in the two recesses 20 leads, together with the narrow guide of the insulating housing 14 between the two side walls 16, 17 of the terminal housing 2 to the fact that for the fitter the latching both in the first position and in the second position clearly noticeable by an acoustic click.
• an upwardly open actuating shaft 22 is formed, in which a tool, in particular the tip of a screwdriver 23, can be inserted.
• the actuating shaft 22 is dimensioned so that in him the tip of a screwdriver 23 can be inserted, with which also the conductor connection elements 5, 6 can be operated.
• only a simple screwdriver is needed to connect the conductors and to operate the circuit breaker.
• Figs. 2 and 4 it can be seen that on a front side 24 of the insulating housing 14, a symbol 26 is printed, which indicates the respective position of the separating blade 8 in the terminal block 1. Since the longitudinal circuit breaker is in the first, closed position in FIG. 2, the symbol 26 of a closed switch is printed on the end face 24 of the insulating housing 14 which is visible in this position. Corresponding to this, the symbol of an open switch is printed on the opposite end face 25. As a result, a fitter can immediately see at a glance at the top of the terminal housing 2, in which position the circuit breaker is currently located.
• FIGS. 6 and 7 show an embodiment of a terminal block 1, in which a switching lock 27 for blocking the circuit breaker 8 in the first position (Fig. 6) or in the second position (Fig. 7) inserted into the terminal housing 2 and therein is locked.
• the shift lock 27 is designed in such a way that, after locking into the terminal housing 2, it can only be removed from the terminal housing with a tool, for example with a pair of needle nose pliers. se 2 can be removed, so that an accidental operation of the circuit breaker is reliably prevented.
• the same shift lock 27 can be inserted into the terminal housing 2 both in the first position of the longitudinal circuit breaker and in the second position of the longitudinal circuit breaker, for which purpose the shift lock 27 only has to be rotated through 180 °.
• the shift lock 27 on one side of a locking pin 28 which engages depending on the arrangement of the shift lock 27 in an opening 29 in one side wall 16 or the other side wall 17 of the terminal housing 2.
• the terminal blocks 1 shown there have a plurality of guide shafts 33 on both sides of the longitudinal circuit breaker, into which the contact pins of a test plug, a test plug socket, a jumper or a switching bridge can be plugged.
• the contact pins of a test plug, a test plug socket, a jumper or a switching bridge can be plugged.
• three openings 34 are formed in the two sections 3, 4 of the busbar (FIG. 5).

Landscapes

• Breakers (AREA)
• Patch Boards (AREA)
• Distribution Board (AREA)
• Connections Arranged To Contact A Plurality Of Conductors (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=40796328

Family Applications (1)

Country Status (7)

Families Citing this family (24)

Citations (2)

Family Cites Families (18)

• 2008
  • 2008-03-14 DE DE102008014176A patent/DE102008014176B4/de not_active Expired - Fee Related
• 2009
  • 2009-03-12 ES ES09720012T patent/ES2703758T3/es active Active
  • 2009-03-12 JP JP2010550089A patent/JP5542698B2/ja not_active Expired - Fee Related
  • 2009-03-12 EP EP09720012.5A patent/EP2255369B1/de active Active
  • 2009-03-12 CN CN200980117097.1A patent/CN102027559B/zh active Active
  • 2009-03-12 US US12/922,633 patent/US8581131B2/en not_active Expired - Fee Related
  • 2009-03-12 WO PCT/EP2009/001792 patent/WO2009112264A1/de not_active Ceased

Patent Citations (2)

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