EP0050675A1 - Dispositif de contacts - Google Patents

Dispositif de contacts Download PDF

Info

Publication number
EP0050675A1
EP0050675A1 EP80106511A EP80106511A EP0050675A1 EP 0050675 A1 EP0050675 A1 EP 0050675A1 EP 80106511 A EP80106511 A EP 80106511A EP 80106511 A EP80106511 A EP 80106511A EP 0050675 A1 EP0050675 A1 EP 0050675A1
Authority
EP
European Patent Office
Prior art keywords
contact
plunger
block
recess
bridge
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
EP80106511A
Other languages
German (de)
English (en)
Other versions
EP0050675B1 (fr
Inventor
Heinz Grunst
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.)
Square D Starkstrom GmbH
Original Assignee
Square D Starkstrom 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
Application filed by Square D Starkstrom GmbH filed Critical Square D Starkstrom GmbH
Priority to EP80106511A priority Critical patent/EP0050675B1/fr
Priority to DE8080106511T priority patent/DE3070651D1/de
Priority to AT80106511T priority patent/ATE13371T1/de
Priority to MX189601A priority patent/MX154594A/es
Priority to CA000387849A priority patent/CA1169453A/fr
Priority to AU76338/81A priority patent/AU543979B2/en
Priority to US06/313,756 priority patent/US4401867A/en
Priority to BR8106850A priority patent/BR8106850A/pt
Priority to DK468281A priority patent/DK156344C/da
Priority to NO813590A priority patent/NO158078C/no
Priority to ES506516A priority patent/ES506516A0/es
Publication of EP0050675A1 publication Critical patent/EP0050675A1/fr
Application granted granted Critical
Publication of EP0050675B1 publication Critical patent/EP0050675B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/001—Means for preventing or breaking contact-welding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S200/00—Electricity: circuit makers and breakers
    • Y10S200/42—Contact welding considerations

Definitions

  • the invention relates to a contact device with a plunger which is longitudinally displaceable in a housing against the force of a compression spring and which has one or more recesses, wherein a contact bridge with movable contact pieces and a contact pressure spring projecting on both sides of the recess are arranged in each recess, and the movable contact pieces cooperating with fixed contact pieces to form openers and / or closers.
  • Contact devices of this type can be found in practice in many switchgear with a wide variety of designs and uses.
  • the limit switches manufactured in large numbers in practice should be mentioned here only as an example.
  • These contact devices have in common that there is a tappet, which is operated either by hand or usually by machine, and which simultaneously serves as a contact bridge carrier.
  • Some switching devices only have a contact bridge, while in other switching devices several contact bridges are provided one above the other and / or next to one another.
  • the actuation stroke of the plunger or contact bridge support must be greater than the working stroke of the contact bridges with the movable contact pieces.
  • the contact pressure between the movable and fixed contact pieces can not correspond to the actuating force that acts on the plunger.
  • a pressure spring is present in the known contact devices, which returns the plunger to its rest position after it has been actuated and holds it there, and on the other hand, a contact pressure spring is inserted into a recess in the plunger for each contact bridge with the latter. These springs precisely determine the required and desired contact pressure. Each contact bridge is thus held in the recess of the plunger so that it can move under the pressure of the contact pressure spring.
  • the invention is accordingly based on the object of providing a contact device in which, with simple means, great switching reliability is ensured even with adhering or welded contacts.
  • the object is achieved according to the invention by components interacting with the contact bridge in such a way that a positive opening of adhesive or welded contacts between the movable and fixed contact pieces is ensured immediately after actuation of the plunger at the same time in which non-adhesive or non-welded contacts open.
  • the main advantage of the invention is that the positive opening of the contacts, including the more or less strongly adhering or welded contacts, takes place practically without delay.
  • an embodiment of the invention is shown in the diagram, namely the left half of the drawing as the middle 9th Horizontal section in one end position, namely the rest position of the plunger and the right half as a top view of the contact device after removal of a possible housing cover in the other end position of the plunger.
  • the contact device shown in the drawing is generally we in practice considerably smaller. For the sake of clarity, the contact device is shown enlarged many times in the drawing.
  • the contact device has a plastic housing 1 with a solid base part 3 with a free interior 2, which is designed and dimensioned so that all moving parts can move freely according to the working stroke .
  • the housing also has upwardly projecting side walls 4 on which, if necessary, a sealing cover, not shown, can be attached.
  • the housing also has guides 5 and 6 for a longitudinally displaceable plunger 7 or contact bridge holder.
  • the tappet is expediently rectangular in cross section at its two ends and accordingly the guides 5, 6 are also rectangular in cross section adapted to the tappet.
  • the plunger has a widened part, in which a recess 9, seen in a longitudinal section and cross section, is provided. If, as in the present exemplary embodiment, the plunger has a middle widened part, the guides 5, 6 are U-shaped and open at the top, so that the plunger can be inserted with its ends into these guides from above. The upper ends of the plunger are also guided upwards by means of upper holding parts, not shown, which are expediently designed as projections of the cover projecting downwards.
  • the recess 9 has two contact surfaces 10 and 11.
  • One contact surface can be create the contact bridge 12 in the rest position shown in the left part of the drawing, while one end of the contact pressure spring 15 is supported on the other contact surface.
  • the other end of the contact pressure spring 15 rests on the contact bridge 12.
  • the contact bridge has movable contact pieces 13 and 14 in the region of the two ends and on both sides. These movable contact pieces work together with fixed contact pieces 16 and 17. Depending on their arrangement, openers and / or closers can be provided in the contact device.
  • the fixed contact pieces 16, 17 are connected in the housing via contact connecting rails 18 and 19 to contact connecting screws 20, 21, to which electrical connecting lines, not shown, can be attached.
  • the contact bridge 12 protrudes on both sides from the recess 9 of the plunger.
  • Components 23 interact with these contact bridge parts in such a way that the contacts between the movable contact pieces 13, 14 are positively opened and the fixed contact pieces 16, 17 is guaranteed.
  • the components are designed in the form of blocks 23 tapering outward in a trapezoidal shape, namely one block sits on one and the other protruding part of the contact bridge 12.
  • Each block is advantageous with a widening outwards Provide slot 32 so that the block can be pushed onto the contact bridge from the front.
  • each block 23 can pivot in a small angular range to the direction of displacement 25 of the plunger, as a comparison of the position of the block 23 in the left half of the drawing shows to the position of the block 23 in the right half of the drawing.
  • the slot is generally dimensioned so large that the block 23 can be pushed over the contact pieces 13, 14, especially since these contact pieces are made smaller in practice than is shown in the drawing for the sake of clarity.
  • the blocks 23 are more appropriate as made of a hard plastic material, as it is used for the housing 1 and the plunger 7.
  • a projection 27 is provided which engages in the recess 9 in the position shown in the left half of the figure.
  • the projection 27 is approximately wedge-shaped so that, as shown, it engages behind the edge of the contact surface 10 of the recess 9, specifically behind the edge on which the end of the contact pressure spring 15 which is remote from the contact bridge 12 is supported.
  • the inclined surfaces 28, 29 of the trapezoidal block 23 cooperate with inner edges 30 and / or inner inclined surfaces 31 of the housing 1 in such a way that each projection 27 disengages from the recess 9 after part of the displacement path of the plunger 7, as will be explained in more detail below is.
  • the block 23 expediently has an extension 33 running essentially parallel to the plunger 7, which serves as a stop for the pivoting movement of the block 23 between an outer surface 34 of the plunger 7 on the one hand and an inner surface 35 of the housing on the other hand.
  • an inclined surface 29 of the trapezoidal block 23 is provided with a step 36, so that the lowest inclined surface part shown in the drawing projects downwards.
  • the trapezoidal block 23 is provided on both sides of the contact bridge 12 with webs 37, which are shown as shown are also trapezoidal tapering to the outside.
  • the inner surface of the block with the lower surface part 38 is chamfered with respect to the upper inner surface 26 by an acute angle corresponding to the pivot angle, so that the block with the edge running perpendicular to the image plane, on which the two surface parts 26 and 38 collide, abut on the plunger and can pivot about this edge.
  • the lower part 38 of the inner surface is offset with a small step outwards, so that in the position shown in the right part of the block 23 between the lower part 38 of the inner surface and the outer surface of the widened part 8 of the plunger 7, a narrow gap remains .
  • the mode of action of the previously explained contact device is essentially the following. If one starts from the rest position of the contact device according to the left half of the drawing, the plunger 7 with the contact bridge 12 is in the uppermost position, so that the movable contact pieces 13 rest against the fixed contact pieces 16, with a contact pressure that is predetermined by the compression spring 22. If the plunger 7 is now actuated by hand or by machine in the direction of the arrow 24, the plunger together with the contact bridge 12 under the pressure of the spring 15 moves downward and the contact pieces 13 lift off from the fixed contact pieces 16.
  • the compressed compression spring 22 causes the plunger to move back.
  • the contact pieces 14, 19 remain in contact as a result of the pressure of the likewise compressed contact pressure spring 15 until the contact surface 11 of the recess in the plunger comes into contact with the contact bridge 12 and takes the contact bridge with the movable contact pieces 14 with it.
  • the blocks 23 are taken along.
  • the extension 33 slides along the inner surface 35 of the housing until the inclined surface 28 meets the inner edge 30 of the housing and the block is pivoted back into the original position by the projection 27 engaging in the recess 9.
  • one can also on the lower part 38 of the inside of the block 23 provide a further wedge-shaped projection, which in a downward extension part of the plunger 7 with a Slot engages, for example, and a stop surface and is brought out of engagement again by pivoting the block, as described above, so that the block also causes the contacts to open in this direction.

Landscapes

  • Push-Button Switches (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Contacts (AREA)
  • Testing Or Measuring Of Semiconductors Or The Like (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Table Devices Or Equipment (AREA)
  • Eye Examination Apparatus (AREA)
  • Seal Device For Vehicle (AREA)
  • Vehicle Body Suspensions (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Keying Circuit Devices (AREA)
EP80106511A 1980-10-24 1980-10-24 Dispositif de contacts Expired EP0050675B1 (fr)

Priority Applications (11)

Application Number Priority Date Filing Date Title
EP80106511A EP0050675B1 (fr) 1980-10-24 1980-10-24 Dispositif de contacts
DE8080106511T DE3070651D1 (en) 1980-10-24 1980-10-24 Contact device
AT80106511T ATE13371T1 (de) 1980-10-24 1980-10-24 Kontaktvorrichtung.
MX189601A MX154594A (es) 1980-10-24 1981-10-09 Mejoras en di fositivo de contacto para aparato de conmutacion
AU76338/81A AU543979B2 (en) 1980-10-24 1981-10-14 Switching device
CA000387849A CA1169453A (fr) 1980-10-24 1981-10-14 Dispositif de commutation
US06/313,756 US4401867A (en) 1980-10-24 1981-10-22 Switching device with forced opening of the contacts
BR8106850A BR8106850A (pt) 1980-10-24 1981-10-23 Dispositivo de contato
DK468281A DK156344C (da) 1980-10-24 1981-10-23 Kontaktindretning
NO813590A NO158078C (no) 1980-10-24 1981-10-23 Kontaktinnretning.
ES506516A ES506516A0 (es) 1980-10-24 1981-10-23 Dispositivo de contacto

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80106511A EP0050675B1 (fr) 1980-10-24 1980-10-24 Dispositif de contacts

Publications (2)

Publication Number Publication Date
EP0050675A1 true EP0050675A1 (fr) 1982-05-05
EP0050675B1 EP0050675B1 (fr) 1985-05-15

Family

ID=8186853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106511A Expired EP0050675B1 (fr) 1980-10-24 1980-10-24 Dispositif de contacts

Country Status (11)

Country Link
US (1) US4401867A (fr)
EP (1) EP0050675B1 (fr)
AT (1) ATE13371T1 (fr)
AU (1) AU543979B2 (fr)
BR (1) BR8106850A (fr)
CA (1) CA1169453A (fr)
DE (1) DE3070651D1 (fr)
DK (1) DK156344C (fr)
ES (1) ES506516A0 (fr)
MX (1) MX154594A (fr)
NO (1) NO158078C (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142471A (en) * 1983-06-28 1985-01-16 Otehall Limited Electric switches
EP0173756A1 (fr) * 1984-09-01 1986-03-12 Square D Starkstrom GmbH Dispositif de contact
EP0824262A1 (fr) * 1996-08-13 1998-02-18 Schaltbau Aktiengesellschaft Commutateur à action brusque avec boítier

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6642823B2 (en) * 2001-09-21 2003-11-04 Siemens Energy & Automation Contact block assembly and a method of assembling a contact block assembly
CN103050316B (zh) * 2011-10-16 2015-03-11 上海永星电子开关有限公司 一种双路强制断开跷板开关
CN103050314B (zh) * 2011-10-17 2015-03-11 上海永星电子开关有限公司 一种按钮罩转动强制断开的跷板开关
FR3003392B1 (fr) * 2013-03-15 2016-07-22 Schneider Electric Ind Sas Bloc unitaire de commutation et dispositif de commutation comportant au moins un tel bloc
CN204598490U (zh) * 2015-04-02 2015-08-26 光宝电子(广州)有限公司 电子设备、电子设备的开关装置及其开关组件
DE102020104577B3 (de) * 2020-02-21 2021-01-21 Alpha Deuren International Bv Elektrisches Schaltelement
DE102021105359A1 (de) * 2021-03-05 2022-09-08 Bauch Engineering Gmbh & Co. Kg Schalter, insbesondere Schnappschalter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1954449U (de) * 1965-05-20 1967-02-02 Schaltbau Gmbh Elektrischer schnappschalter.
DE1935225B2 (de) * 1969-07-11 1971-12-23 Siemens AG, 1000 Berlin u 8000 München Elektrischer schnappschalter
DE2341488B2 (de) * 1973-08-16 1976-04-22 Saia Ag, Murten (Schweiz) Schnappschalter
US3973094A (en) * 1975-04-28 1976-08-03 Allen-Bradley Company Two-stage snap-action switch
DE2653001B2 (de) * 1975-11-24 1979-05-31 La Telemecanique Electrique, Nanterre, Hauts-De-Seine (Frankreich) Elektrischer Trennschalter mit rascher Trennung und Sicherheits-Zwangsunterbrechung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2361734A1 (fr) * 1976-08-10 1978-03-10 Telemecanique Electrique Interrupteur a coupure brusque
FR2408206A1 (fr) * 1977-11-08 1979-06-01 Crouzet Sa Interrupteur a commande positive
IT1141172B (it) * 1980-02-06 1986-10-01 Cge Cie Generale Elettromeccan Interruttore elettrico a scatto rapido con apertura forzata dei contatti

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1954449U (de) * 1965-05-20 1967-02-02 Schaltbau Gmbh Elektrischer schnappschalter.
DE1935225B2 (de) * 1969-07-11 1971-12-23 Siemens AG, 1000 Berlin u 8000 München Elektrischer schnappschalter
DE2341488B2 (de) * 1973-08-16 1976-04-22 Saia Ag, Murten (Schweiz) Schnappschalter
US3973094A (en) * 1975-04-28 1976-08-03 Allen-Bradley Company Two-stage snap-action switch
DE2653001B2 (de) * 1975-11-24 1979-05-31 La Telemecanique Electrique, Nanterre, Hauts-De-Seine (Frankreich) Elektrischer Trennschalter mit rascher Trennung und Sicherheits-Zwangsunterbrechung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142471A (en) * 1983-06-28 1985-01-16 Otehall Limited Electric switches
EP0173756A1 (fr) * 1984-09-01 1986-03-12 Square D Starkstrom GmbH Dispositif de contact
US4616117A (en) * 1984-09-01 1986-10-07 Square D Starkstrom Gmbh Double pole circuit breaker
EP0824262A1 (fr) * 1996-08-13 1998-02-18 Schaltbau Aktiengesellschaft Commutateur à action brusque avec boítier

Also Published As

Publication number Publication date
MX154594A (es) 1987-10-22
AU543979B2 (en) 1985-05-09
CA1169453A (fr) 1984-06-19
AU7633881A (en) 1982-04-29
DE3070651D1 (en) 1985-06-20
ATE13371T1 (de) 1985-06-15
ES8206904A1 (es) 1982-09-01
NO158078C (no) 1988-07-06
US4401867A (en) 1983-08-30
DK156344B (da) 1989-08-07
DK156344C (da) 1989-12-27
ES506516A0 (es) 1982-09-01
DK468281A (da) 1982-04-25
NO158078B (no) 1988-03-28
EP0050675B1 (fr) 1985-05-15
BR8106850A (pt) 1982-07-06
NO813590L (no) 1982-04-26

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