EP2070161A2 - Appareil de commutation électrique d'une installation - Google Patents

Appareil de commutation électrique d'une installation

Info

Publication number
EP2070161A2
EP2070161A2 EP07818664A EP07818664A EP2070161A2 EP 2070161 A2 EP2070161 A2 EP 2070161A2 EP 07818664 A EP07818664 A EP 07818664A EP 07818664 A EP07818664 A EP 07818664A EP 2070161 A2 EP2070161 A2 EP 2070161A2
Authority
EP
European Patent Office
Prior art keywords
terminal
switching device
clamping
connection
installation switching
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07818664A
Other languages
German (de)
English (en)
Other versions
EP2070161B1 (fr
Inventor
Klaus-Peter Eppe
Carola Thielen
Albert Stieger
Richard Hack
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB AG Germany
Original Assignee
ABB AG Germany
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102007044262A external-priority patent/DE102007044262A1/de
Application filed by ABB AG Germany filed Critical ABB AG Germany
Publication of EP2070161A2 publication Critical patent/EP2070161A2/fr
Application granted granted Critical
Publication of EP2070161B1 publication Critical patent/EP2070161B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/48365—Spring-activating arrangements mounted on or integrally formed with the spring housing with integral release means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5844—Electric connections to or between contacts; Terminals making use of wire-gripping clips or springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • 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
    • H01R4/48455—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar insertion of a wire only possible by pressing on the 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/0264—Protective covers for terminals

Definitions

  • the invention relates to a service switching device having a housing and having a screwless terminal connection with a clamping spring for connecting connection conductors, which is fixed in position in a terminal connection space of the housing, according to the preamble of claim 1.
  • a generic installation switching device may be, for example, a circuit breaker, a residual current circuit breaker a motor protection switch or the like. It comprises within its housing at least one contact point with at least one fixed and one movable contact piece, via which a current path leading from an input terminal to an output terminal can be opened and closed. The contact point is generally actuated by a switching mechanism with a latching point.
  • a generic service switching device may further comprise tripping devices, for example a thermal release or a magnetic quick release, which act on the contact point or the rear derailleur when a short circuit or fault current occurs in the current path, so that the contact point is opened.
  • screw-type terminal connections are used in addition to screw terminals in generic service switching devices.
  • Clamping elements can be plug-in terminals or spring-loaded terminals. In principle, these can considerably simplify the connection of connection conductors, but today known installation switching devices with screwless terminal connections are still subject to considerable operational restrictions.
  • EP 1 432 077 a generic service switching device with a screwless terminal connection is known, in which the terminal connection space is open towards the narrow side of the housing and is covered with a cover part corresponding in width to the housing width. The cover is clipped onto the narrow side of the housing on this.
  • the terminal connection according to EP 1 432 077 can be used to insert rigid conductors without tools, but to insert flexible conductors and to remove the conductors from the terminal connection, the use of a tool is required.
  • EP 1 124 286 shows a generic service switching device with Steckklem- men, however, are housed in a separate terminal block, the terminal block must be subsequently infected to the switching device.
  • the solution shown here is very complex and requires additional Ansteckmaschine to the service switching device, so that no standardized unit housing can be used.
  • the terminal connection space is laterally bounded by the housing broad sides and at least open to the front front side, wherein the opening of the terminal connection space is covered by a terminal connected pivotally connected to the housing terminal cover.
  • the terminal cover part has a connection surface with a number of connection openings corresponding to the number of connection conductors to be connected, and guide means for the connection conductors formed integrally on each connection opening.
  • spring actuating means are integrally formed on the cover part and designed so that they act on the clamping spring during opening of the cover part in an opening manner.
  • the terminal connection of a service switching device comprises very few components, namely essentially only the clamping spring, a busbar with a clamping edge against which the clamping spring clamps the connecting conductor to be connected, and the cover. It is therefore very easy and inexpensive to manufacture.
  • the cover is designed to perform several functions in a component:
  • connection conductors are inserted through several connection openings while being kept apart at the same time.
  • an individual insertion of each individual conductor end is possible without further measures being required on the side of the clamping spring or the busbar to keep the individual conductors apart.
  • cover spring action means the cover can simultaneously become the opening tool for the clamping spring.
  • a separate operating tool such as a screwdriver, is no longer required to open the Kiemmfeder. This greatly simplifies the insertion and removal of leads.
  • the terminal cover is resiliently acted upon by the clamping spring counter to the insertion direction of the external connection conductor and pressed against the clamping spring.
  • the cover part by the clamping spring against a stop as- nenden projection of the housing wall to be resiliently acted upon.
  • the terminal cover is held by the resilient application of the clamping spring in a defined starting position.
  • the starting position is the closed position of the clamping spring.
  • the spring actuating means are formed by the integrally formed on each connection opening guide means for the connection conductors.
  • connection conductors are tubular, hollow bodies pointing from the inside of the cover part to the clamping spring and forming an insertion channel for the connection conductors.
  • the terminal cover can then be made particularly simple and can be produced for example as a cost-effective injection molded part.
  • the terminal cover part has an externally accessible, manually operable pressure surface.
  • the terminal cover can have a test opening for electrical contacting of Klemmmenan gleiches.
  • one possible embodiment of the invention provides that the terminal surface of the terminal cover part runs approximately parallel to the rear front side and the guide means are inclined with respect to the terminal surface of the terminal cover part.
  • the angle of inclination for the guide means is to be selected according to the fact that the connection conductors in the series installation of a service switching device according to the invention, for example, in a distribution box, remain easily accessible and connecting leads are not bent too much upwards.
  • a further advantageous embodiment provides in this respect that the terminal surface of the terminal cover part inclined relative to the rear front side and the guide channels extend approximately perpendicular to the connection surface.
  • the tilt angle at which the leads are inserted relative to the spring clip, is determined in this embodiment by the inclination angle of the guide channels.
  • connection surface of the terminal cover opposite the rear front side, and the guide channels are inclined relative to the connection surface.
  • the clamp menabdeckteil have an engagement opening for an operating tool. Through this engagement opening can then be spent with the actuating tool, such as a screwdriver, the clamping spring in its open position.
  • the front facing end of a first body part of the terminal cover pivotally coupled a closure member which covers the terminal connection space on the front side in cooperation with a housing-fixed front end, wherein upon actuation of the terminal cover the closure member with the housing-side front end at least partially overlaps.
  • the closure part and the housing-fixed part of the front together make up the front.
  • the closure member thus acts in addition to the fixed part of the housing as klemmenabdeckteil workedes part of the front.
  • the closure part is plate-shaped. It can advantageously be produced in the same injection molding process as the terminal cover part. Especially advantageous is an embodiment in which the closure part is coupled to the terminal cover part by means of a hinge, for example a film hinge. Such a film hinge can be produced very inexpensively by injection molding.
  • a further very advantageous embodiment of the invention is characterized in that the closure part is guided displaceably parallel to the front side via laterally projecting guide pins in a housing-fixed, slide-like guide.
  • the Closure is then overlapped with the housing-side part of the front and slidably guided. As a result, it can be pivoted and moved behind the housing-side part of the rear front side when the terminal cover part is actuated.
  • a tight covering of the terminal receiving space is ensured to the front side with simultaneous movement of the terminal cover and mechanical stability of the rear front.
  • a further very advantageous development of the invention is characterized in that the terminal cover part carries a spacer surface following the connection surface, which forms the terminal cover-side closure of the terminal receiving space in the region of the narrow side, the closure part being pivotably coupled to the end of the spacer surface facing the front side is.
  • the spacer surface is designed to be stiff.
  • a power transmission to the spring of the connection terminal is also possible by operating the terminal cover part over the spacer surface.
  • the pressure surface of the terminal cover is due to the location of the terminal very close to the mounting side of the switching device in the installed position of the switching device, for example, in an installation distributor, by an operator is difficult to access.
  • the distance surface can thus be used in a region which is not covered by a connecting conductor, as a second pressure surface for actuating the spring.
  • the spacer surface carries an engagement opening for an actuating tool.
  • the terminal can thus be operated via the terminal cover either manually or by means of a tool.
  • the closure part consists, at least in the region of the coupling with the first part body, of a material which has different mechanical properties than the first part body of the terminal cover part. Again, the closure part covers the terminal connection space on the front side in cooperation with a housing-fixed front side end, wherein upon actuation of the terminal cover part, the closure part at least partially overlaps the housing-fixed front side end.
  • the closure part and the housing-fixed part of the front side together form the front side.
  • the closure member thus acts in addition to the fixed part of the housing as klemmenabdeckteil workedes part of the front.
  • an embodiment in which the hinge and the closure part in the region of the hinge is made of a material which has different mechanical properties than the first partial body of the terminal cover part is particularly advantageous.
  • the closure part, at least in the region of the coupling with the first part body of the terminal cover part consists of a material with different mechanical properties than the latter, the resilient properties of the closure part and its coupling to the first part body can be determined independently of those of the first part body of the terminal cover part optimized for the intended use. This is particularly advantageous if other, sometimes even opposite, mechanical requirements are placed on the first part body of the terminal cover part than on the closure part.
  • the first part body of the terminal cover member must have high rigidity so that the force for opening the clamp spring can be transmitted without deformation of the terminal cover member.
  • the closure member should be flexible, but at least flexible coupled to the first part of the body of the terminal cover so that it can slide to save space in the backdrop-like guides behind the housing-side front end when pivoting the terminal cover. During pivoting of the terminal cover part into the interior of the device, the angle between the closure part and the first part body of the terminal cover part will inevitably change.
  • the closure part should be as parallel as possible to the housing-fixed front end. However, the angle between the first part body of the terminal cover part and the housing-side front end changes when the terminal cover part is pivoted. Therefore, a mobility of the closure part relative to the first part body of the terminal cover part is required at the coupling point, which can only be achieved by a flexibility of the material at this point.
  • the spacer surface is designed stiff, and the closure part is at least in the region of the coupling with the spacer surface made of a soft material, which is softer than the spacer surface executed.
  • the terminal cover part has partially different material properties. Due to the stiff part of the range, a power transmission to the spring of the terminal is also possible by operating the terminal cover over the spacer surface.
  • the closure part, the second part can nevertheless turn easily and move parallel to the front panels and behind them.
  • the terminal cover part is produced with the closure part coupled thereto in a two-component injection molding process. In this process, materials with different mechanical properties, such as hard and soft plastics, can be joined together in injection molding.
  • an installation switching device according to the invention has a compression spring acting on the conductor end.
  • the clamping connection comprises a bus bar with a connection end and an adjoining discharge region.
  • the bus bar has a window-like recess with a supporting edge and a clamping edge opposite the supporting edge at the transition of the connection end into the discharge area.
  • the clamping spring also has a support leg, with which it is supported on the support edge of the busbar.
  • At the support leg includes a curved piece and a clamping leg, so that the conductor end between the clamping leg and the clamping edge is clamped as an abutment. The conductor end can be inserted from the side of the elbow piece into the window-like recess.
  • a first partial clamping leg adjoins the curved piece, which merges at a bending edge into a second partial clamping leg bent from the first partial clamping leg, so that the first and the second partial clamping legs form an obtuse angle occupy, whose opening points in the insertion direction of the connecting conductor.
  • the obtuse angle between the first and the second partial clamping legs offers the advantage that the point of application can be placed in the vicinity of the spring actuating means in the vicinity of the bending edges.
  • the contact point of the spring actuating means may have a greater distance to the pivot point of the clamping leg on the elbow without the thereby achievable maximum terminal opening is smaller, and without the spring actuating means would be a connection conductor with a large cross section in the way.
  • a greater distance between the contact point and the pivot point means a more favorable lever ratio and thus a lower actuation force for the user.
  • a preferred embodiment is characterized in that the busbar has approximately a U-shape, wherein the terminal end forms the one U-leg, and the diverting region is formed by the transverse web and the other U-leg. It can be provided at the free end of the other U-leg upstand for attaching further conductors that lead into the interior of the service switching device.
  • a discharge bar can also be formed on the free end of the other U-leg.
  • the discharge rail can be about run perpendicular to the other U-leg and the clamping edge opposite side of the terminal end may be supported on the discharge.
  • a service switching device can be used for electrical contacting during the calibration of the bimetallic strip.
  • the contact point for the calibration of the bimetallic strip is located at another location, outside the access area of the terminal connection, and is not accessible via the terminal connection. Since the thermal bimetal can only be calibrated when fully assembled, the separate access openings to the calibration contacts must be covered by additional cover parts in the case of known installation switching devices following calibration.
  • An inventive installation switching device can be fully assembled, except for the terminal cover. Now - by means of electrical contacting through the opening of the terminal terminal - the calibration of the bimetallic strip is made by the Ableit Scheme the busbar is used as a calibration contact. After calibration, the terminal cover is placed, and thus completed the installation switching device. A separate cover for the calibration opening is no longer required.
  • Another advantage is given by the fact that due to the inventive design of the terminal connection of a service switching device according to the invention is designed so that it has only a small electrical resistance even with very narrow outer dimensions. This is achieved in that the bus bar in the discharge region between the clamping edge and the point at which another conductor is fixed, which leads into the interior of the service switching device, has a uniform width.
  • a division unit a is defined for the installation width of service switching devices.
  • An installation switching device with a half standard module width thus has a installation width of 9 mm.
  • to facilitate the clamping of two connecting conductors of the clamping legs of the clamping spring may be slotted longitudinally, so that two closely spaced, independently clampable part springs arise. Due to the fact that the two part springs lie close to one another, ie without a separating larger intermediate space or an intermediate web located approximately in the middle, a further contribution is made to a narrow construction of the terminal connection in order to achieve the terminal connection according to the invention An installation switching device can be installed only half a standard module width. Further advantageous embodiments and improvements of the invention and further advantages can be taken from the subclaims.
  • FIG. 1 shows a schematic partial sectional view of a service switching device according to the invention 'in a first embodiment
  • FIG. 2 shows a schematic partial view of the service switching device according to FIG. 1,
  • FIG. 3a shows a schematic view of the spring-loaded terminal of the service switching device according to the invention according to FIG. 1, in the closed state, FIG.
  • FIG. 3b shows a schematic view of the spring-loaded terminal of the service switching device according to the invention according to FIG. 1, in the opened state
  • FIG. 4a shows a schematic partial view of a service switching device according to the invention in a second embodiment
  • FIG. 4b shows the terminal cover part for use with the service switching device according to the invention according to FIG. 4a
  • FIG. 5 shows a schematic partial view of a service switching device according to the invention in a third embodiment
  • FIG. 6 shows a schematic view of a modification of the spring-loaded terminal according to FIG. 3a, FIG.
  • FIG. 7 shows a schematic partial sectional view of an installation switching device according to the invention with a terminal cover part, to which a closure part is coupled via a hinge, with the clamp closed, as well as
  • FIG. 8 shows a schematic partial view of the service switching device according to FIG. 7, with the clamp open in the actuated position, FIG.
  • FIG. 1 shows a partial sectional view of the terminal connection space 18 of a service switching device 1 according to the invention with the housing open.
  • FIG. 2 shows a corresponding partial view when the housing 3 is closed.
  • the service switching device 1 has an insulating housing 3 formed from two housing parts 2 joined along a parting line 2a with a front front 4, a rear front 5, a fastening or connection side 6, a front narrow side 7, a rear narrow side 8, and 2 broad sides 9, of which in the view of Figure 2 only one is shown.
  • the terminal connection space 18 is laterally, ie towards the broad side, limited by the housing broad sides 9 of the insulating housing 3.
  • an opening 20 of the terminal connection space 18 is formed by a recess in the rear front side of the housing part 2, through which opening the opening in the terminal housing 18 is formed.
  • Terminal space 18 Fixed terminal terminal 10 is accessible for the connection of connecting conductors 14. Due to a further recess on the rear narrow side 8 of the housing part 2, the opening 20 of the terminal connecting space 18 extends beyond the abutting edges between the rear narrow side 8 and the rear front side 5 into the rear narrow side 8. This has the advantage that increased flexibility is given for the connection direction of the connection conductor 14.
  • the terminal terminal 10 described below is a so-called plug-in terminal. It comprises a bus bar 102 and a clamping spring 12.
  • the terminal connection 10 rests on a projection 110 formed in the inner side of the broad side 9 and is fixed in position in the terminal connection space 18 by means of webs 104 and pins 106, 108 in a manner known per se.
  • the fixed in the terminal connection space 18 terminal terminal 10 is thus located in the region of the abutting edge between the rear narrow side 8 and the rear front side fifth
  • the busbar 102 comprises a connection end 112 and a subsequent discharge region 114. At the connection end 112, it has a window-like recess 116 with a support edge 118 and a clamping edge 120 opposite the support edge 118. The clamping edge 120 is located at the transition of the connection end 112 into the discharge region 114.
  • the clamping spring 12 has a support leg 212, with which it is supported on the support edge 118 of the bus bar 102.
  • the support may be such that the support leg 212 has at its free end a raised edge, with which it partially surrounds the support edge 118 for the purpose of supporting.
  • a curved piece 214 and thereon a clamping leg 216 connects.
  • the conductor end 16 of a connecting conductor 14 is inserted from the side of the elbow 214 ago in the window-like recess 116 and is clamped between the clamping leg 216 and acting as an abutment clamping edge 120.
  • the free end of the clamping leg 216 engages through the window-like recess 116.
  • the clamping leg 216 of the clamping spring 12 is longitudinally slotted along a slot 2181, so that two independently clampable part springs 13a, 13b arise, with which two connection conductors can be clamped independently of each other.
  • the slot 2181 is very narrow, it does not cause a spatial separation of the two part springs 13a, 13b. These are only independently bendable through the slot. However, the two part springs 13a, 13b are otherwise close to each other on their narrow longitudinal sides, so that no additional space between them is needed.
  • the busbar 102 has approximately a U-shaped basic shape, wherein the terminal end 112 forms the first U-leg, and the discharge region 114 is formed by a transverse web 220 and the second U-leg 222. At the free end of the second U-leg 222 a Aufkantung 224 is attached. At this upstand 224 further connection conductors can be attached, with which the terminal connection 10 with other modules within the switching device housing, such as the trigger assemblies, is connected. In particular, the connection conductors of this upstand can be welded or brazed, also screwing is possible.
  • the upstand at the free end of the second U-leg 222 is extended to a discharge rail 226.
  • the discharge rail 226 is thus positively connected to the second U-leg 222; it points approximately perpendicularly from this towards the window-like recess 116 and projects beyond it.
  • At the free end of the discharge bar 226 there is again a raised edge 228, to which then again further connection conductors can be welded or rented.
  • the upstand can also be used directly as a terminal connection within the switching device use.
  • the bus bar 102 receives an outer contour, which is similar to the small letter "b.” The terminal end 112 of the bus bar 102 is supported against the discharge bar 226.
  • the busbar 102 can be produced cost-effectively and simply and in a wide variety of shapes, for example as a stamped and bent part in very large quantities.
  • the opening 20 of the terminal connection space 18 is covered by a terminal cover part 22 pivotally connected to the housing 3.
  • the terminal cover 22 is formed approximately L-shaped, wherein the two legs are formed by angularly stacked cover plates.
  • the first cover plate covers the terminal connection space 18 toward the rear front side 5 and has a connection surface 24 with two connection openings 26, wherein a connection conductor 14 can be connected through each of the connection openings 26.
  • the second cover plate covers the terminal connection space 18 towards the rear narrow side 8 and has an externally accessible, manually operable pressure surface 230.
  • the second cover plate has a semi-open, tubular cavity, with which it is rotatably mounted in a connected to the broad side 9 of the housing 3 pivot pin 232.
  • the terminal cover part 22 can thus be pivoted about the free edge of the second cover plate in the direction of the clamping spring. Falling out of the cover 22 is prevented by serving as a stop projection 234 on the housing wall.
  • the projection 234 is mounted in each half of each of the two housing parts 2 at the abutting edge.
  • an insertion channel forming hollow body 28 are attached at the first cover plate of the cover member 22, aligned with the clamping spring 12, at each of the connection openings 26 tubular. These serve at the same time as a guide means for the lead 14 to be introduced, and as a spring actuating means 30.
  • the cover member 22 is pivoted by pressure on the pressure surface 230 about the pivot pin 232 in the direction of the clamping spring 12, the hollow body 28 press the Klemmschen- kel 216 in the clamping spring 12 away from the clamping edge 120 of the bus bar 102, so that between the clamping edge 120 and the clamping leg 216 space for insertion of the stripped terminal conductor end 16 of the connecting conductor 14 is formed.
  • FIG. 1 shows this state.
  • the clamping leg 216 of the clamping spring 12 presses the covering part 22 outward again due to its spring force via the hollow body 28 and at the same time clamps the end 16 of the connection conductor 14 against the clamping edge 120 the window-like recess 116.
  • connection openings 26 are present in the connection area 24 of the cover part 22, and behind each connection opening 26 is integrally formed on the connection area a tubular hollow body 28 as a guide means for the connection conductor and as a spring actuation means.
  • Each connection opening 26 and each guide means 28 is assigned to one of the two partial clamping springs 13a, 13b, as they are formed by the slot 2181 in the clamping spring 12. So if two conductors are to be clamped, then a conductor 14 is inserted through each of the two connection opening 26 and clamped by in each case one of the partial clamping springs 13a, 13b.
  • connection conductors 14 takes place in the hollow bodies 28 serving as guide means for the connecting conductors 14, thus no separate guiding or separating devices are required at the terminal connection 10.
  • the terminal connection 10 can be made very narrow and simple, so that it can be installed in a service switching device half a module width.
  • the cover thus fulfills two functions: once the functions of guiding the connection ladder and secondly the function of the spring actuating tool. Without external actuating tool for the clamping spring, both rigid and flexible conductor ends can be clamped with the device according to the invention and also removed again from the clamp.
  • a test opening 236 is further attached. Through this test opening, the clamping spring 12 can be electrically contacted by means of a test probe.
  • the pad 24 of the cover 22 extends inclined to the rear front side 5.
  • the guide means 28 are approximately perpendicular to the pad 24.
  • the inclination angle at which the connecting conductor 14 is inserted into the terminal is thus by the Tilt angle of the pad 24 determines.
  • An embodiment is also conceivable in which the connection surface 24 extends approximately parallel to the rear front side 5, and the guide means 28 are inclined with respect to the connection surface 24. Then, the inclination angle at which the leads 14 are inserted into the clamp is determined by the inclination angle of the guide means 28 opposite to the pad 24.
  • the cover 22 can be made very cheap as an injection molded plastic part in an injection process.
  • FIGS. 4a and 4 b show further variants of a service switching device according to the invention. It should be discussed only on the essential differences from those explained in the previous embodiments.
  • the terminal connection space is lowered, that is, it is arranged further away from the rear front side 5 in the direction of the fastening side 6 in the housing 3 of the service switching device 1.
  • the resulting greater distance between the connection surface 24 and the rear front side 5 is compensated by a spacer surface 238, which is formed on the cover part 22 as an additional partial surface following the connection surface 24.
  • the spacer surface 238 carries at its free end a second control surface 240, which is aligned with inserted cover 22 in approximately the rear front side 5.
  • the test opening 236 is here mounted in the second control surface 240. Lowering the terminal connection space 18 brings further operating advantages when inserting the connection conductors 14. Via the second operating surface 240, the terminal connection 10 can now also be actuated from the front side.
  • the projection 234 serving as a stop is attached laterally to the housing broad sides.
  • the terminal connection space is set further lower, that is, it is arranged even further away from the rear front side 5 in the direction of the fastening side 6 in the housing 3 of the service switching device 1.
  • the terminal cover part 22 has a web 242 pointing away from the connection surface perpendicularly between the two connection openings 26.
  • the web 242 is also supported on the extended distance surface 238 of the cover 22 from.
  • the web 242 serves to stiffen and thus to increase the mechanical strength.
  • the cover 22 can also be made with the web 242 very cheap injection molding in an injection process.
  • FIG. 7 shows a partial sectional view of the terminal connection space 18 of another service switching device 1 according to the invention.
  • the ' installation switching device 1 has an insulating housing formed from two housing parts 2 with a front front side 304, a rear front side 305, a mounting side 6, a front narrow side 7, a rear narrow side 8, and two broad sides 9, of which in the view of FIG only one, lying in the drawing plane, is shown.
  • the terminal connection space 18 is laterally, ie towards the broad side, limited by the housing broad sides 9 of the insulating housing 3.
  • an opening 20 of the terminal connection space 18 is formed through a recess in the rear front side 305 of the housing part 2, through which the terminal connection 10 fixed in the terminal connection space 18 is accessible for the connection of connection conductors 14.
  • a housing-side section 356 of the rear front side 305 connects.
  • an opening 20 is formed on the rear front side 305 in the region between the end of the housing-side section 356 and the rear narrow side 8 facing away from the front narrow sides 7.
  • the opening 20 of the terminal connection space 18 extends over the abutting edges between the rear narrow side 8 and the rear front side 305 away still in the rear narrow side 8 inside. This has the advantage that an increased flexibility for the connection direction of the connection conductor 14 is given.
  • the terminal connection 10 described below essentially corresponds to the terminal connection already described above in FIGS. 1-6. It comprises a bus bar 102 and a clamping spring 312.
  • the terminal connection 10 is fixed in position in the inside of the broad side 9 by means of webs 104 and pins 106, 108 in a manner known per se in the terminal connection space 18.
  • the fixed in the terminal connection space 18 terminal terminal 10 is located in the region of the abutting edge between the rear narrow side 8 and the rear attachment side. 6
  • the busbar 102 of the terminal terminal 10 comprises a connection end 112 and a subsequent discharge region 114. At the connection end 112, it has a window-like recess 116 with a support edge 118 and a clamping edge 120 opposite the support edge 118. The clamping edge 120 is located at the transition of the connection end 112 into the discharge region 114.
  • the clamping spring 12 has a support leg 212, with which it is supported on the support edge 118 of the bus bar 102.
  • the support can be made so that the Support leg 212 has at its free end a raised edge, with which it includes the support edge 118 for the purpose of supporting partially.
  • a curved piece 214 and thereon a clamping leg 216 connects.
  • the conductor end of a connecting conductor (not shown here) is introduced from the side of the elbow 214 forth in the window-like recess 116 and is clamped between the clamping leg 216 and acting as an abutment clamping edge 120.
  • the free end of the clamping leg 216 passes through the window-like recess 116th
  • the busbar 102 has approximately a U-shaped basic shape, wherein the terminal end 112 forms the first U-leg, and the discharge region 114 is formed by a transverse web 220 and the second U-leg 222. At the free end of the second U-leg 222 a Aufkantung 224 is attached. At this upstand 224 further connection conductors can be attached, with which the terminal connection 10 with other modules within the switching device housing, such as the trigger assemblies, is connected. In particular, the connection conductors of this upstand can be welded or brazed, also screwing is possible.
  • the upstand at the free end of the second U-leg 222 is extended to a discharge rail 226.
  • the discharge rail 226 is thus positively connected to the second U-leg 222; it points approximately perpendicularly from this towards the window-like recess 116 and projects beyond it.
  • a first partial clamping leg 217 which merges at a bending edge 219 in a second partial clamping limb 218 bent from the first TeH clamping leg 217, initially adjoins the curved section 214, so that the first and second partial clamping limbs 217 , 218 take an obtuse angle with each other.
  • the opening of the obtuse angle points in the insertion direction of the connecting conductor, the bending edge 219 is located approximately in the middle of the clamping leg 216.
  • the opening 20 of the terminal connection space 18 is covered by a terminal cover part 22 pivotally connected to the housing part 2.
  • the terminal cover part 22 comprises a longitudinally extending in the direction of the rear narrow side 8, via a pivot pin 232 to the housing part 2 pivotally coupled first part body 322 and at its free end via a hinge 352 pivotally coupled closure member 354, which is approximately parallel to the rear front side 305th runs. To improve the mobility in the hinge 352 this is designed as a film hinge.
  • the first part body 322 comprises a first cover plate 323, which the terminal connection space 18 in the lower, adjacent to the mounting side 6 part of
  • Schmalseite 8 covers, and carries a roughly tubular counterpart to the pivot pin 232 with which it is pivotally coupled to the pivot pin.
  • the first cover plate 323 has an externally accessible, manually operable pressure surface 330.
  • the first cover plate 323 is connected via a pointing into the housing intermediate piece 325 with a spacer surface 338, which also extends parallel to the rear narrow side 8 in the direction of the front side 305 and the terminal connection space 18 in the upper, adjacent to the rear front side 305 part of the narrow side 8 covers.
  • the closure part 354 and the housing-side part 356 of the rear front side thus together form the rear front side 305.
  • the closure member 354 carries laterally, in the direction of the broad sides 9 facing, projecting pins 358.
  • a backdrop-like guide 360 is mounted, in such a way that the pins 358 included in the guide 360. If now the terminal cover 22 is pivoted by pressure on the pressure surface 330 in the direction of the device interior, the closure member 354 is behind the housing-side part 356 of the rear front side 305 slide and guided by the slide-like guide 360 parallel to this. The angle between the closure part 354 and the spacer surface 338 changes.
  • the closure part 354 and the spacer surface 338 form an acute angle with one another, which is opened into the interior of the housing.
  • the closure part 354 and the spacer surface 338 form an obtuse angle with an opening into the housing interior.
  • the closure member 354 and the spacer surface 338 Upon actuation of the terminal cover member and concomitant pivoting about the pivot pin 232, the closure member 354 and the spacer surface 338 also pivot against each other about the film hinge 352.
  • the closure part 354 can thus save space behind the housing-side part 356 of the rear front side 305 in order to save space.
  • the intermediate piece 325 has an outwardly directed connection surface 324.
  • connection surface 324 In the connection surface 324, at least one connection opening 26 is present. Starting from the connection opening 26, the intermediate piece 325 is penetrated by a tubular recess 28 which, starting approximately perpendicularly from the connection surface 324, penetrates the intermediate piece 325 and thus serves as guide means for a connection conductor to be connected to the terminal connection-10.
  • connection conductor is guided through the connection opening 26 in the terminal cover part 22 and, after leaving the tubular recess 28, strikes the clamping element 216 of the clamping spring 312.
  • the connecting conductor is a rigid conductor, then by means of the connecting conductor alone the clamping leg 216 of the clamping spring 312 can be pushed away from the clamping edge 120 so far that the connecting conductor between the free end of the clamping Schenkeis 216 and the clamping edge 120 in the window-like recess 116 can be inserted and clamped.
  • the window-like recess 116 In a flexible connection conductor, the window-like recess 116 must first be opened in another way.
  • the nose 30 can also be other protruding components or components, in particular the function of the nose 30 could also be formed by a web which surrounds the outlet opening of the tubular recess 28 like a collar.
  • the terminal cover member 22 By pressing on the pressure surface 330 or on the spacer surface 338, the terminal cover member 22 is pivoted inwardly, and the nose 30, the clamping leg 216 is pushed away from the clamping edge 120 far enough that the window-like recess 116 is released for the insertion of the connecting conductor, see FIG 8th.
  • the nose 30 is formed on the terminal cover 22 and formed so that they act upon the pivoting of the cover against the clamping spring opening this close to the bending edge 219.
  • first and second partial clamping legs 217, 218 form an angle of about 160 °. Opposite an otherwise unchanged clamping spring with straight, unbent clamping leg 216 halves the insertion force at the maximum terminal opening by inserting the angle.
  • the opening movement of the terminal cover member 22 may also be effected by a commercially available slotted or Phillips screwdriver 364.
  • a commercially available slotted or Phillips screwdriver 364 For this purpose, it is placed on the spacer surface 338 at an acute angle into a receptacle opening 350 (slotted, cross-shaped or spherical recess) which is suitable for receiving, and the clamp is opened by a pressure movement with the screwdriver 364.
  • connection opening 26 and only one tubular recess 28 is shown in the illustration according to FIGS. 7 and 8, it is of course also possible to provide two or more such connection openings and openings for receiving and connecting a plurality of connection conductors in the intermediate piece 325. All connected connection conductors can be connected with a common clamping spring via their clamping legs 216. When the terminal cover 22 is actuated, all the connected conductors are then released simultaneously and can be released at the same time.
  • the terminal cover part 22 with the first part body 322, the hinge 352 and the closure part 354 consists in a further embodiment, for which, however, the same figures 7 and 8 apply as schematic drawings of two material components with different mechanical properties. These are connected together in a two-component injection molding process.
  • the result is a hard / soft connection.
  • the hard component is the main ingredient. From her, the first part of body 322 is made. It serves to transmit the actuating forces to the clamping spring 312 and thereby prevent or at least minimize bending of the component.
  • the soft component is used.
  • the hinge 352 need not necessarily be a living hinge. Because the flexibility of the hinge is ensured by the choice of a flexible material in the hinge area, not only by the thickness of the hinge.
  • a flexibility of the closure member 354 further contributes to the fact that, if it is displaced in the slide-like guide 360 in the direction of the front narrow side 7 parallel to the rear front side 305, could also bend slightly in itself, and thus even easier and can rest closer to the front narrow side 305.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Patch Boards (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

Appareil de commutation électrique d'une installation (1), comprenant un boîtier (3) présentant un côté frontal avant (4) et arrière (5), un côté de fixation (6), des côtés étroits et des côtés larges (9) avant (7) et arrière (8), et une connexion de bornes (10) dépourvue de vis, présentant un ressort de friction (12) pour le raccordement de conducteurs de connexion (14), qui est fixé en position dans un espace de connexion de bornes (18) du boîtier (3), caractérisé en ce que l'espace de connexion de bornes (18) est limité latéralement par les côtés larges du boîtier (9), et est ouvert au moins vers le côté frontal avant (4), en ce que l'ouverture (20) de l'espace de connexion de bornes (18) peut être recouvert par un couvre-bornes (22) monté pivotant sur le boîtier (3), qui présente une surface de connexion (24) ayant un nombre d'ouvertures pour raccordement (26) correspondant au nombre de conducteurs de connexion à raccorder, ainsi que des moyens de guidage (28) pour les conducteurs de connexion (14) formés sur chaque ouverture pour raccordement (26), et en ce que des moyens de commande à ressort (30) sont formés sur le couvre-bornes (22) et sont configurés de façon qu'ils agissent, à l'ouverture, à l'encontre du ressort de friction (12), lors du pivotement du couvre-bornes (22).
EP07818664.0A 2006-10-06 2007-10-04 Appareil de commutation électrique d'une installation Active EP2070161B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE102006047254A DE102006047254B3 (de) 2006-10-06 2006-10-06 Installationsschaltgerät
DE102007043801A DE102007043801A1 (de) 2006-10-06 2007-09-13 Installationsschaltgerät
DE102007044069A DE102007044069A1 (de) 2006-10-06 2007-09-14 Installationsschaltgerät mit einem schraubenlosen Klemmanschluss
DE102007044262A DE102007044262A1 (de) 2006-10-06 2007-09-17 Klemmanschluss und Installationsschaltgerät
PCT/EP2007/008585 WO2008043466A2 (fr) 2006-10-06 2007-10-04 Appareil de commutation électrique d'une installation

Publications (2)

Publication Number Publication Date
EP2070161A2 true EP2070161A2 (fr) 2009-06-17
EP2070161B1 EP2070161B1 (fr) 2013-05-29

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EP07818664.0A Active EP2070161B1 (fr) 2006-10-06 2007-10-04 Appareil de commutation électrique d'une installation

Country Status (6)

Country Link
US (1) US7896685B2 (fr)
EP (1) EP2070161B1 (fr)
CN (1) CN101573838B (fr)
CA (1) CA2664899A1 (fr)
DE (3) DE102006047254B3 (fr)
WO (1) WO2008043466A2 (fr)

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Also Published As

Publication number Publication date
DE102007043801A1 (de) 2009-03-19
EP2070161B1 (fr) 2013-05-29
US20100081316A1 (en) 2010-04-01
CN101573838B (zh) 2011-07-27
WO2008043466A3 (fr) 2008-09-12
DE102006047254B3 (de) 2008-05-21
DE102007044069A1 (de) 2009-04-09
CN101573838A (zh) 2009-11-04
WO2008043466A2 (fr) 2008-04-17
CA2664899A1 (fr) 2008-04-17
US7896685B2 (en) 2011-03-01

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