EP0920043B1 - Sicherheitsschalter - Google Patents
Sicherheitsschalter Download PDFInfo
- Publication number
- EP0920043B1 EP0920043B1 EP98118252A EP98118252A EP0920043B1 EP 0920043 B1 EP0920043 B1 EP 0920043B1 EP 98118252 A EP98118252 A EP 98118252A EP 98118252 A EP98118252 A EP 98118252A EP 0920043 B1 EP0920043 B1 EP 0920043B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuator
- tappet
- switch
- housing
- plunger
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H27/00—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
- H01H27/002—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings wherein one single insertion movement of a key comprises an unlocking stroke and a switch actuating stroke, e.g. security switch for safety guards
Definitions
- the present invention relates to a safety switch with a in a switch housing axially slidably mounted and provided with a switching bridge, spring-loaded Tappet, which has an actuator in the form of a Has pawl in the area of an insertion opening for a bracket-like actuator lies, and cooperates with the actuator such that the plunger - and thus also the switching bridge - with the actuator retracted in the ON position and with the actuator pulled out Actuator is moved to the off position, the pawl consists of a substantially U-shaped bracket.
- a safety switch of the generic type is known from DE 296 09 012 U 1.
- Safety switches of the generic type include made the request that with the pulling out of the actuator from the switch housing of the plunger and thus the switching bridge connected to the plunger is forcibly in the off position is moved so that it is ensured in any case that when pulled out Actuator is in the off position, even if the plunger itself in The springs in the switch-off direction have been damaged and are therefore no longer functional are.
- the present invention has for its object a safety switch Generic type to design so that the aforementioned requirement with special simple constructive means can be met.
- the substantially U-shaped Bracket is pivotally mounted in the housing in the region of its central web and engages with one of its side legs in a recess of the plunger and its other side leg is above the ram, the latter side leg when the actuator is retracted it engages behind it and pulls it out completely of the actuator from the housing is only permitted in the off position.
- the safety switch according to the invention is particularly simple Design of the pawl as a U-shaped bracket and its easy storage in Housing.
- Such shapes can be inexpensively manufactured without problems reliably perform the required function, namely to ensure that when pulled out Actuator in any case, the switch position of the plunger and thus also the switching bridge connected to the plunger is given because of the recess of the plunger engaging side leg of the pawl even then in the plunger Moves towards the switch-off position if the springs loading the plunger are damaged or are destroyed. Only when the plunger is in the off position the actuator can then be completely removed from the switch housing.
- a ball ratchet is provided, by means of the off position of the plunger is mechanically fixable.
- a safety switch as a whole with reference number 1 designated, provided within a switch housing 2 with a plunger 3 is, which carries a switching bridge 4.
- the plunger 3 is in the axial direction by springs Direction loaded, in such a way that by these springs 5 of the plunger 3 constantly in Extending direction, indicated by the arrow A in Figure 1, is loaded.
- the plunger 3 by a bracket-like actuator 6 which passes through an insertion opening 7 can be inserted into the switch housing 2 and counter to the plunger 3 the action of the spring 5 presses into the switch housing 2 in the switched-on position postponed.
- An actuating device is in the form of the aforementioned insertion opening 7 a pawl 8 is provided, which cooperates with the actuator 6.
- the pawl 8 is designed as an approximately U-shaped bracket, which is in the region of its Center web 9 is pivotally mounted in the housing 2. There is a swivel axis for this 10, which is fixed in the housing 2 and passes through the central web 9, is provided.
- One of the side legs 11 of the U-shaped bracket engages in a recess 12 of the Plunger 3.
- the second side leg 13 of the U-shaped bracket engages behind the retracted one Actuator 6 as soon as it is inserted into the switch housing 2 and the plunger 3 has actuated.
- FIGS. 2 and 3 show the positions which correspond to the switch-off position.
- the position of the actuator is indicated in Figure 2, which results when this actuator 6 is inserted into the insertion opening 7 of the switch housing 2 and hits the plunger 3.
- Figure 3 that position of the actuator 6 is shown that arises shortly before the actuator 6 is finally pulled out of the housing 2.
- Figures 2 and 3 make it very clear that in the off position the bow-like Actuator 6 without hindrance on the second side leg 13 of the pawl can be moved past.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Push-Button Switches (AREA)
- Air Bags (AREA)
- Control Of Combustion (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Mechanisms For Operating Contacts (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Description
- Figur 1
- einen Schnitt durch einen erfindungsgemäßen Sicherheitsschalter in Einschaltstellung,
- Figur 2
- einen der Figur 1 entsprechenden Schnitt durch den Sicherheitsschalter in ausgeschaltetem Zustand bei geringfügig in das Schaltergehäuse eingeführten Betätiger,
- Figur 3
- eine den Figuren 1 und 2 entsprechende Schnittdarstellung durch den erfindungsgemäßen Sicherheitsschalter in einer Position, in der der Betätiger nahezu vollständig aus dem Schaltergehäuse herausgezogen ist.
Claims (2)
- Sicherheitsschalter (1) mit einem in einem Schaltergehäuse (2) axial verschiebbar gelagerten und mit einer Schaltbrücke (4) versehenen, federbelasteten Stößel (3), der an einem seiner Enden eine Betätigungsvorrichtung in Form einer Schaltklinke (8) aufweist, die im Bereich einer Einführöffnung für einen bügelartigen Betätiger (6) liegt und derart mit dem Betätiger (6) zusammenwirkt, daß der Stößel (3) - und damit auch die Schaltbrücke (4) - bei eingefahrenem Betätiger (6) in Einschaltstellung und bei herausgefahrenem Betätiger (6) in Ausschaltstellung verschoben ist, wobei die Schaltklinke (8) aus einem im wesentlichen U-förmigen Bügel besteht, dadurch gekennzeichnet, daß der im wesentlichen U-förmige Bügel im Bereich seines Mittelsteges (9) schwenkbar im Gehäuse (2) gelagert ist und mit einem seiner Seitenschenkel (11) in einer Ausnehmung (12) des Stößels (3) eingreift und dessen anderer Seitenschenkel (13) oberhalb des Stößels (3) liegt, wobei der letztgenannte Seitenschenkel (13) bei eingefahrenem Betätiger (6) diesen hintergreift und ein vollständiges Herausziehen des Betätigers (6) aus dem Gehäuse (2) erst in der Ausschaltstellung gestattet.
- Sicherheitsheitsschalter nach Anspruch 1, dadurch gekennzeichnet, daß innerhalb des Gehäuses (2) ein Kugelgesperre (14) vorgesehen ist, mittels dessen die Ausschaltstellung des Stößels (3) mechanisch fixierbar ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29720862U | 1997-11-25 | ||
DE29720862U DE29720862U1 (de) | 1997-11-25 | 1997-11-25 | Sicherheitsschalter |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0920043A2 EP0920043A2 (de) | 1999-06-02 |
EP0920043A3 EP0920043A3 (de) | 2000-05-03 |
EP0920043B1 true EP0920043B1 (de) | 2004-05-06 |
Family
ID=8049070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98118252A Expired - Lifetime EP0920043B1 (de) | 1997-11-25 | 1998-09-25 | Sicherheitsschalter |
Country Status (6)
Country | Link |
---|---|
US (1) | US5964342A (de) |
EP (1) | EP0920043B1 (de) |
AT (1) | ATE266251T1 (de) |
DE (2) | DE29720862U1 (de) |
DK (1) | DK0920043T3 (de) |
ES (1) | ES2216227T3 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6501040B2 (en) | 2001-05-18 | 2002-12-31 | Honeywell International Inc. | Dual directional cable actuated emergency stop device |
FR2862810B1 (fr) * | 2003-11-21 | 2006-01-06 | Schneider Electric Ind Sas | Interrupteur de position de securite |
US7232965B2 (en) * | 2004-03-19 | 2007-06-19 | Square D Company | Linear motion compensator |
GB0620540D0 (en) * | 2006-10-17 | 2006-11-22 | Idem Safety Switches Ltd | Safety switch |
IT201700077454A1 (it) * | 2017-07-10 | 2019-01-10 | Astra S R L | Contatto elettrico di sicurezza con azionamento mediante chiave di azionamento asportabile |
IT201700077432A1 (it) * | 2017-07-10 | 2019-01-10 | Astra S R L | Contatto elettrico di sicurezza con azionamento mediante chiave di azionamento asportabile |
DE202021104834U1 (de) | 2021-09-08 | 2021-09-15 | Bernstein Aktiengesellschaft | Sicherheitsschalter |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3699276A (en) * | 1971-04-05 | 1972-10-17 | Appleton Electric Co | Linear push plunger electrical switch with tubular shroud arc prevention means |
DE3819753A1 (de) * | 1988-06-10 | 1989-12-14 | Kronenberg Gmbh H & J | Sicherheitsschalter |
US5359163A (en) * | 1993-04-28 | 1994-10-25 | Eaton Corporation | Pushbutton switch with adjustable pretravel |
DE29609012U1 (de) * | 1996-05-20 | 1996-10-24 | Bernstein Hans Spezialfabrik | Sicherheitsschalter |
-
1997
- 1997-11-25 DE DE29720862U patent/DE29720862U1/de not_active Expired - Lifetime
-
1998
- 1998-09-25 DE DE59811321T patent/DE59811321D1/de not_active Expired - Fee Related
- 1998-09-25 EP EP98118252A patent/EP0920043B1/de not_active Expired - Lifetime
- 1998-09-25 DK DK98118252T patent/DK0920043T3/da active
- 1998-09-25 ES ES98118252T patent/ES2216227T3/es not_active Expired - Lifetime
- 1998-09-25 AT AT98118252T patent/ATE266251T1/de not_active IP Right Cessation
- 1998-11-18 US US09/195,230 patent/US5964342A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE59811321D1 (de) | 2004-06-09 |
ATE266251T1 (de) | 2004-05-15 |
EP0920043A3 (de) | 2000-05-03 |
ES2216227T3 (es) | 2004-10-16 |
DE29720862U1 (de) | 1998-01-15 |
US5964342A (en) | 1999-10-12 |
DK0920043T3 (da) | 2004-07-26 |
EP0920043A2 (de) | 1999-06-02 |
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