EP0319606A1 - Commutateur avec coupe-circuit - Google Patents

Commutateur avec coupe-circuit Download PDF

Info

Publication number
EP0319606A1
EP0319606A1 EP87118280A EP87118280A EP0319606A1 EP 0319606 A1 EP0319606 A1 EP 0319606A1 EP 87118280 A EP87118280 A EP 87118280A EP 87118280 A EP87118280 A EP 87118280A EP 0319606 A1 EP0319606 A1 EP 0319606A1
Authority
EP
European Patent Office
Prior art keywords
fuse
plug
housing
switch according
fuse plug
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
EP87118280A
Other languages
German (de)
English (en)
Other versions
EP0319606B1 (fr
Inventor
Dietmar Rahmstorf
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.)
KLAUS BRUCHMANN GMBH
Original Assignee
Klaus Bruchmann GmbH
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 to DE19853504946 priority Critical patent/DE3504946A1/de
Application filed by Klaus Bruchmann GmbH filed Critical Klaus Bruchmann GmbH
Priority to EP19870118280 priority patent/EP0319606B1/fr
Priority to DE87118280T priority patent/DE3787472D1/de
Publication of EP0319606A1 publication Critical patent/EP0319606A1/fr
Application granted granted Critical
Publication of EP0319606B1 publication Critical patent/EP0319606B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/54—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers
    • H01H85/545—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers with pivoting fuse carrier

Definitions

  • the invention relates to a fuse switch with a housing in which at least two electrically insulated housing switch contacts are arranged at rest, one of which is electrically conductively connected to an input current connection and the other to an output current connection, and in which one is provided with a fuse link Fuse plug between a switch-off position and a switch-on position is pivotally arranged.
  • a safety switch of this type is known from DE-OS 34 06 815.
  • Switches of this type are provided with a so-called rocker switch, which is pivoted back and forth in the housing between a switch-off position and a switch-on position and is provided with an insertion channel for receiving a safety plug that can be inserted into the switch rocker in the switch-off position.
  • the fuse plug usually contains a fuse link of a certain nominal current value, for which the shape of the fuse plug is characteristic and which can be inserted into the fuse plug in such a way that the two housing switch contacts are electrically conductively connected to one another in the switch-on position. In other cases, the fuse plug and fuse insert can form a unit.
  • the invention has for its object to improve a fuse switch of this known type so that the construction of the fuse switch is simplified and the use of materials and manufacturing costs are reduced, while at the same time a much smaller width can be achieved. In addition, a low switching game between the housing and fuse plug should be achieved.
  • the invention solves this problem in that the securing plug in its insertion end position is movably guided in the housing directly on the mutually parallel inner walls and on guide elements fixedly arranged thereon.
  • This direct contact of the fuse plug with the spaced-apart inner walls of the housing which usually consists of two halves divided in the main plane, makes it possible to significantly reduce the overall width of the fuse switch, the desired high level of operational reliability of the fuse switch also being reduced by the switching cycle is improved.
  • a fuse plug which encloses a fuse link frame-like
  • the fuse plug rests with the narrow sides of its frame on the housing inner walls and with its front wall on an arcuate guide element and with its rear wall on the underside of the front wall of the housing surrounding the insertion opening .
  • a latching device is advantageously arranged in the housing, by means of which the securing plug can be fixed in its switch-off position inserted in the housing and in its switch-on position.
  • An advantageous further development of the invention further consists in a coupling piece which is pivotably guided on the opposite inner walls of the housing with circular-shaped guide grooves on guide elements designed as strips.
  • This coupling piece can be coupled to the coupling piece of one or more adjacent safety switches by a coupling device, so that a multi-pole safety switch is created.
  • the coupling piece can be positively connected to the securing plug in the pivoting direction be so that when the fuse plug is actuated, the coupling piece and possibly other coupling pieces connected to it, adjacent fuse switches can be pivoted together as part of a multi-pole fuse switch unit.
  • Another particularly expedient embodiment of the invention consists in arranging a longitudinally displaceable protective plate on the coupling piece, which rests with its upper end under the pretension of a spring on the underside of the edge of the insertion opening and, as an actuation lock, covers the upper housing contact at a slight distance, but by means of a driving element of the fuse plug can be moved into the end position of the fuse plug when the plug is moved into the housing until the upper housing contact is released.
  • This ensures that when the fuse plug is removed, the upper switch contact is completely covered by the protective plate towards the insertion opening of the housing and is protected against contamination or contact, while the safety plug clears the pivoting path into the switched-on position when the protective plug is inserted into the housing by taking the protective plate with it.
  • the coupling piece can interact with a locking device, by means of which the securing plug can be locked in its switched-on and switched-off positions.
  • a locking device by means of which the securing plug can be locked in its switched-on and switched-off positions.
  • an embodiment of a fuse switch is provided in which the inner contact of the fuse plug or fuse link with the associated inner housing switch contact is independent of the pivot location of the fuse plug is permanently electrically connected. It is advisable to assign a protective flap to the insertion opening for the securing plug, by means of which the insertion opening can be closed when the securing plug is removed.
  • the protective flap can advantageously be coupled to the safety plug.
  • An expedient embodiment of this embodiment also consists in that the side wall of the fuse plug facing the upper housing contact is extended at the front end beyond the length of a contact blade of a fuse link and pivotally engages in a groove in the region of the housing base in the inserted position of the fuse plug. This ensures an exact fixation of the pivot point for the safety plug.
  • the protective flap itself is preferably biased by a spring in the direction of its closed position.
  • the securing plug can be pivotably supported in its insertion end position with a shoulder on a support member as a guide element which is stationary in the housing.
  • FIG. 1 to 6 show a first embodiment of a fuse switch 30 with a housing 31 consisting of two halves 31a, 31b, in which at least two electrically insulated housing contacts 32, 33 are arranged at rest.
  • the upper housing contact 33 is electrically conductively connected to an input current connection 34 and the lower housing contact 32 to an output current connection 35.
  • a safety plug 36 is inserted into the housing 31 through an insertion opening 46 and is shown in the off position.
  • a fuse link 37 is inserted into the fuse plug 36 and is pivotably arranged with the fuse plug 36 between the switch-off position shown in FIG. 1 and the switch-on position shown in FIG. 4.
  • the securing plug 36 essentially encloses the securing insert 37 in a frame-like manner.
  • the securing plug 36 lies with the narrow sides 42a, 42b of its frame 42 on the housing inner walls 38, 39 of the housing 31 and with its front wall 44 on an arc-shaped guide element 40, 41, which extends inwards from the parallel inner walls 38, 39 lying opposite one another project at a distance from one another, and with its rear wall 45 on the underside of the insertion opening 46 surrounding end wall 47 of the housing 31 movable.
  • the switch housing 31 can be made relatively narrow, the housing itself, with the exception of the removable fuse plug, not requiring any further moving parts for the switching movement thereof.
  • a latching device 48 is arranged in the housing 31, by means of which the securing plug 36 can be fixed in its insertion end position.
  • the locking device 48 consists of a locking lug 49 arranged on the inner wall 38 of the housing 31, which engages behind the narrow side 50 of the front wall 44 of the locking plug 36 shortly before reaching the insertion end position of the locking plug 36.
  • the fuse link 37 is provided at its ends with contact blades 51, 52 which, as shown in FIGS. 2 and 3, are aligned at a distance parallel to the inner walls 38, 39 of the housing 31.
  • the front contact knife 51 projects through a cutout 53 in the front wall 44 of the fuse plug 36.
  • the rear contact knife 52 is surrounded by the frame 42 of the fuse plug 36, the side wall 54 of which in the area of this contact knife 52 has an opening 55 for the engagement of the upper housing contact 32 in the switched-on position of the fuse plug 36.
  • FIG. 4 it can be seen that in the switched-on position, the front contact blade 51 engages in an electrically conductive manner in the inner fork-shaped housing contact 33, while the rear contact blade 52 engages in the upper fork-shaped housing contact 32, which in this case engages in the opening 55 of the side wall 54 in the region of engages the outer end of the fuse plug 36.
  • the switch on position of the Fuse plug 36 is delimited by the edge 47a of the end wall 47 at the insertion opening 46, which abuts the handle 36a of the fuse plug 36 in this position.
  • a coupling piece 160 is provided which can be pivoted with circular-shaped guide grooves 161, 162 on the circular-shaped guide elements 140, 141 designed as strips on the opposite inner walls 138, 139 of the housing 131 is led.
  • the coupling piece 160 can be connected to the coupling piece of at least one adjacent fuse switch of the same type by a coupling device 163.
  • this coupling device 163 consists of a coupling pin 164 which projects from one side of the coupling piece 160 and projects outwards through a slot 165 in the associated housing wall 138.
  • the same coupling piece 160 is on the side coaxially opposite the coupling pin 164 with an engagement opening 166 arranged for a corresponding coupling pin 164 of an adjacent fuse switch 131a.
  • the coupling pin 164 of the coupling piece 160 can naturally engage in a corresponding engagement opening 166 of the coupling piece of an adjacent safety switch, not shown. In this way, with the aid of a plurality of fuse switches, a multipole fuse switch unit can be created in which the fuse plugs are connected to one another via the coupling pieces 160 and can be switched at the same time.
  • the coupling piece 160 is also entrained when the securing plug 136 is pivoted, if the side wall 154 of the securing plug 136 abuts the opposite, parallel surface of the coupling piece 160, it becomes, according to the embodiment shown in FIGS Fuse switch 130 preferably that the coupling piece 160 is positively connected to the opposite side wall 154 of the fuse plug 136 facing the upper housing contact 132.
  • This positive connection in the pivoting direction between the securing plug 136 and the coupling piece 160 consists of a dovetail-shaped tongue and groove connection 173 between the side wall of the securing plug 136 and a corresponding lateral extension 174 of the coupling piece 160.
  • the coupling piece 160 plate 167 is mounted for longitudinal displacement by means of a dovetail guide 197.
  • the upper end 168 of the protective plate 167 lies under the pretension of a compression spring 169 arranged in the coupling piece 160 and supported on a web 160a of the protective plate 167 on the underside of the edge 170 of the insertion opening 146 and, as an actuation lock, covers the upper housing contact 132 at a slight distance .
  • the protective plate 167 can be displaced by means of a driver element 171 of the securing plug 136 when it is pushed into the housing 131 until the upper housing contact 132 is released in the insertion end position of the securing plug 136.
  • the driving element 171 is designed as a driving lug 172 which can be moved through a small cutout 170a of the edge 170 of the end wall 147 of the housing 131 and comes to rest on the outer end 168 of the protective plate 167 when the securing plug 136 is inserted into the housing 131. It is thus apparent from FIG. 7 that the contact piece 160 and the fuse plug 136 are prevented from being switched on by the cover of the upper housing contact 132 by the protective plate 167.
  • the figures also show that the coupling piece 160 is assigned a locking device 175, by means of which the securing plug 136 can be locked in its switched-on and switched-off positions via the coupling piece 160.
  • the locking device 175 is composed of a toothed segment 176 which is provided on the outer surface of the coupling piece 160 and which interacts with a pinion 177.
  • the pinion 177 which engages in corresponding openings 131a, 131b of the two side walls 131c, 131d of the housing 131 with shaft journals 177a, 177b, is provided between two pinion parts 177c, 177d with an eccentrically arranged bolt 178 which, when the coupling piece 160 pivots over the toothed segment and pinion connection between two end positions is pivotable, which correspond to the switch-on or switch-off position of the fuse plug 136. Since the eccentric pin 178 is connected to one end of a tension spring 179, the other end of which is fixed to a pin 196 in the housing 131, the pinion 177 must overcome a dead center position of the pin 178 under the action of the spring 179 before the other end position is reached.
  • the securing plug 136 in FIG. 7 assumes the switch-off position shown there as a result of the relaxed spring 179 with the coupling piece 160.
  • the handle 136a of the securing plug 136 bears against the edge of the insertion opening 146 under the action of the prestressed spring 179, so that the switch-on position is thereby fixed perfectly.
  • 19 to 22 show a third embodiment of a fuse switch 231, in which the inner contact blade 251 of a fuse link 237 in a fuse plug 236 with the associated housing contact 233 is connected in an electrically conductive manner regardless of the pivoting position of the fuse plug 236.
  • the side wall 254 of the fuse plug 236 directed in the switch-on direction is extended beyond the length of the inner contact blade 251 of its fuse link 237 and engages with the free end 236a of the extension in a groove 294 in the region of the bottom of the housing 231 in the inserted position of the fuse plug 236 swiveling one.
  • the groove 294 forms the pivot point for the fuse plug 236, the outer contact blade 252 of which comes into electrical contact with the upper housing contact 232, as described above.
  • the insertion opening 246 for the safety plug 236 is a protective flap 286 which can be pivoted about an axis 286a assigned by means of which the insertion opening 246 can be closed when the safety plug 236 is removed.
  • This protective flap 86 is coupled to the safety plug 236 in the housing 231.
  • the outer end of the securing plug 236 is provided with a handle 288 which has a recess 289 which is open to the interior of the housing 231 and into which the free end of the protective flap 286 engages in such a manner that the protective flap 286 is in the switched-on position of the securing plug 236 is held in the recess 289 of the handle 288 with the necessary play.
  • the protective flap 286 is biased in the direction of its open position by a leg spring 295, so that the protective flap 286 is oriented parallel to the insertion direction y of the securing plug 236 in its open position and is covered by the handle 288 of the securing plug 236 provided with the recess 289.
  • FIGS. 7 to 12 show a fuse plug 136 for the embodiment of a fuse switch 131 shown in FIGS. 7 to 12, wherein only fuse sets 137 can be used in these fuse plugs 136, which are provided with contact caps 137a, 137b, on the front sides of which contact blades 151, 152 are attached.
  • a safety plug 136 is shown, at the front and rear end of which contact blades 158, 159 are attached, of which the rear is under the action of a coiled leaf spring 180, while the contact blade 159 at the front end of the Fuse plug 136 is firmly arranged in this.
  • FIG. 17 shows a fuse insert 137 provided with contact caps 156, 157, the contact caps 156, 157 of which are each connected to the contact blades 158, 159 of the Apply fuse plug 137 in an electrically conductive manner. Otherwise, the securing plug for interacting with the coupling piece 160 or the protective plate 167 is of the same design.
  • FIGS. 24 and 25 a fourth embodiment of a fuse switch 330 is shown in FIGS. 24 and 25, in which a fuse plug 336 is pivotally supported in its inserted end position with a shoulder 300 on a support member 301 in the housing 331.
  • the shoulder 300 is arranged on the side wall 302 of the fuse plug 336 facing the input power connection 334.
  • the shoulder 300 is provided with a circular groove 303 which runs transversely to the pivoting plane of the securing plug 336 and into which a rounded support strip 304 which extends transversely from the inner walls (only inner wall 338 visible) of the housing 331 engages.
  • this support strip 304 forms an angle with a vertical strip 305 projecting inwards from the inner walls, the angle opening upwards so far that the shoulder 300 in the switched-off position of the safety plug 336 of the strip 305 at such a distance that the shoulder 300 has sufficient clearance when the fuse plug 336 is switched on.
  • the support strip 304 thus forms the pivot axis for the securing plug and thus the center point for the pivoting radius of the securing plug 336.

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  • Fuses (AREA)
EP19870118280 1985-02-13 1987-12-09 Commutateur avec coupe-circuit Expired - Lifetime EP0319606B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19853504946 DE3504946A1 (de) 1985-02-13 1985-02-13 Schaltersicherungseinheit
EP19870118280 EP0319606B1 (fr) 1987-12-09 1987-12-09 Commutateur avec coupe-circuit
DE87118280T DE3787472D1 (de) 1987-12-09 1987-12-09 Sicherungsschalter.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19870118280 EP0319606B1 (fr) 1987-12-09 1987-12-09 Commutateur avec coupe-circuit

Publications (2)

Publication Number Publication Date
EP0319606A1 true EP0319606A1 (fr) 1989-06-14
EP0319606B1 EP0319606B1 (fr) 1993-09-15

Family

ID=8197503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870118280 Expired - Lifetime EP0319606B1 (fr) 1985-02-13 1987-12-09 Commutateur avec coupe-circuit

Country Status (2)

Country Link
EP (1) EP0319606B1 (fr)
DE (1) DE3787472D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT412927B (de) * 1999-04-20 2005-08-25 Felten & Guilleaume Ag Oester Schmelzsicherungsschalter
US20150042441A1 (en) * 2013-08-08 2015-02-12 Palle Kohring Weinreich Electrical switch with built in fuse
US10008347B1 (en) 2013-08-08 2018-06-26 Palle Kohring Weinreich Electrical switch with built in fuse improvement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2754195A1 (de) * 1976-12-10 1978-06-15 Knudsen Nordisk Elect Gruppenschalter
US4268106A (en) * 1979-10-30 1981-05-19 The Singer Company Fuse holder assembly
FR2499763A1 (fr) * 1981-02-09 1982-08-13 Schupa Elektro Gmbh & Co Kg Coupe-circuit a cartouche
WO1985003617A2 (fr) * 1984-02-24 1985-08-29 Klaus Bruchmann Unite de securite de commutateur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2754195A1 (de) * 1976-12-10 1978-06-15 Knudsen Nordisk Elect Gruppenschalter
US4268106A (en) * 1979-10-30 1981-05-19 The Singer Company Fuse holder assembly
FR2499763A1 (fr) * 1981-02-09 1982-08-13 Schupa Elektro Gmbh & Co Kg Coupe-circuit a cartouche
WO1985003617A2 (fr) * 1984-02-24 1985-08-29 Klaus Bruchmann Unite de securite de commutateur

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT412927B (de) * 1999-04-20 2005-08-25 Felten & Guilleaume Ag Oester Schmelzsicherungsschalter
US20150042441A1 (en) * 2013-08-08 2015-02-12 Palle Kohring Weinreich Electrical switch with built in fuse
US9263211B2 (en) * 2013-08-08 2016-02-16 Palle Kohring Weinreich Electrical switch with built in fuse
US10008347B1 (en) 2013-08-08 2018-06-26 Palle Kohring Weinreich Electrical switch with built in fuse improvement

Also Published As

Publication number Publication date
EP0319606B1 (fr) 1993-09-15
DE3787472D1 (de) 1993-10-21

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