EP0817227A1 - Safety switch that may be locked with an electromagnet - Google Patents
Safety switch that may be locked with an electromagnet Download PDFInfo
- Publication number
- EP0817227A1 EP0817227A1 EP97401340A EP97401340A EP0817227A1 EP 0817227 A1 EP0817227 A1 EP 0817227A1 EP 97401340 A EP97401340 A EP 97401340A EP 97401340 A EP97401340 A EP 97401340A EP 0817227 A1 EP0817227 A1 EP 0817227A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pusher
- electromagnet
- axis
- safety switch
- housing
- 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
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Classifications
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- 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
- H01H27/007—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 the switch being lockable by remote control, e.g. by electromagnet
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches
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- 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
- H01H2027/005—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 the key receiving part having multiple openings to allow keys from different directions to operate the switch
Definitions
- the present invention relates to a safety switch of the type comprising on the one hand a housing in which is housed a block of electrical contacts, and on the other hand a control head fixed to the housing so as to take several differentiated positions by rotation around a first axis; in such a switch, on the one hand, the control head has at least one insertion slot for a actuator and on the other hand a transmission mechanism provided with an engaging roller by the actuator and capable of rotation about a second axis, perpendicular to the first axis, and a pusher intended to act on the contact block and mobile parallel to the first axis under the effect of the mechanism in response to displacement of the actuator.
- An electromagnet the function of which is sometimes associated with such a switch consists in blocking the transmission mechanism, and thereby the actuator remaining attached to this mechanism, to allow remote locking control of the actuator and therefore of the organ - door or machine organ - that we want keep in a safe position.
- switches see for example EP-553 885 and WO 95/18 457
- the locking device must also be designed to absorb without damage from significant efforts from the actuator and to interfere as little as possible with the kinematic chain of transmission to the contact block.
- the core of the electromagnet cooperates with the blocking by a locking device capable of being placed in two positions allowing the blocking of the pusher when the electromagnet is energized and respectively off.
- the blocking member is preferably a guided locking slide in rectilinear slides of the housing perpendicular to the first axis and cooperating with the electromagnet core by an actuating ramp coupling reversible, for example a part with retoumable guide ramp.
- the locking slide advantageously cooperates with a range of blocking provided on a metal sheath fitted on the tail of a linked pusher the roller of the transmission mechanism.
- Figure 1 shows in elevation and in section a safety switch in accordance with the invention, configured as an interlock switch under voltage, in unlocked position.
- Figure 2 is section 2-2 of Figure 1.
- Figure 3 is a partial view of the safety switch of Figure 1, in locked position.
- Figure 4 is section 4-4 of Figure 3.
- Figure 5 shows the safety switch configured as a safety switch. locking off, in unlocked position.
- the safety switch shown in the figures includes a housing 10 in which are housed an electrical contact block B and an electromagnet E.
- the case is closed by a cover not indicated.
- a control head 11 is fixed to the case so as to be able to take four different positions by rotation successive 90 ° around an axis X1.
- the head 11 includes a lateral slot 12 and an upper slot 13 in one or the other of which one can introduce a actuator A of special shape in order to actuate the contacts of block B.
- an actuator is for example attached to an envelope door or a machine body whose security requires closing or coming into a certain position, the contact block noting the safety position and translating it for example in an operating authorization. According to the case; he can be advantageous to engage the actuator A in the slot 12 or in the slot 13.
- the control head 11 houses a transmission mechanism 14 provided with a roller running around an axis X2 perpendicular to X1 and a follower plunger 15; this mechanism is of any known type and is suitable, in particular by means of the form particular of the actuator and one or two locking rollers 14a of the rotating roller 14, which can be requested by the actuator, to prohibit any violation of the implementation of the contacts.
- the plastic follower plunger 15 protrudes from the head towards the inside of the case, this pusher being linked to a follower head 19 which comprises a ramp 19a guiding a pin or axis of the roller to translate the movement of rotation of the roller in a translational movement of the pusher 15; this one acts directly on a control member 16 which is specific to the contact block B and who carries the contacts of it.
- a sheath metallic 17 which does not participate in the transmission of movement to the block of contacts and which is intended to block the follower head of mechanism 14 when the order is transmitted to the coil of the electromagnet, while relieving the pusher of blocking efforts.
- the sleeve can be slid on soft on the pusher while remaining free to move relative to it or can be held on the pusher by means of retaining, latching, and it is in stop at least in the locking phase on a shoulder 19b of the follower head to block it; it can be activated by an independent return spring, but, more simply, by connecting the follower head with the roller, a spring recall associated with it is sufficient to recall the assembly in the rest position.
- the scabbard 17 has a length less than that of the pusher and has a bearing surface 18 for a locking member, as described below, this bearing being located at its lower free end or defined by a groove.
- the electromagnet E comprises a movable core 20 movable in a direction X3 parallel to X1 and biased by a return spring F, the core being fixed to a support 21 for driving a slide 22; the support is movable in the housing 10 according to direction X3 and it is guided for this purpose in slides 23 of the housing, while the slide is movable in the housing in a direction X4 perpendicular to X1, X3 and is guided in rectilinear slides 24 of the housing.
- a coupling piece retoumable 25 is engaged in a removable manner, for example snapped on or fitted into a grooved recess 21a of the support 21;
- Exhibit 25 presents a ramp 26 cooperating with a follower finger 27 provided at the end 22a of the slide 22 opposite to that 22b which cooperates with the bearing surface 18 of the sheath 17.
- the slide 22 has a fork 28 for blocking the sheath 17 without intervening on the pusher 15 (see FIG. 4).
- the hitch retoumable provided between the electromagnet E and the pusher 15 can be arranged differently; in particular, the ramp may belong to the end of the slide and be driven by a finger of the support 21.
- the support can be biased by a spring reminder shown schematically in the figures.
- the actuator A is released from the control head 11 so that that the mechanism 14 is put in the rest state under the effect of a return spring not indicated and blocked in this state by a locking member not shown.
- the pusher 15 and the metal sheath 17 are held in the low position by the connection of the follower head 19 with the rotating roller and the connection of the sleeve with the roller or pusher.
- the member 16 of the contact block B is therefore held in position low and block B is in working position.
- the electromagnet E is de-energized, so that the support 21 is put in the high position by the spring, which pulls the slide 22 to the left since finger 27 is housed towards the end of the left part 26a, for example vertical, of the ramp 26.
- the sheath is therefore free, and with it the head 19 and the pusher 15, to move if the mechanism 14 is switched.
- the spring F is an element of safety which, on interruption of the power supply to the solenoid coil, makes return the switch to its initial rest position (locked position for an electromagnet for locking under voltage or unlocked position for a solenoid power off).
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Push-Button Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Breakers (AREA)
- Toys (AREA)
- Lock And Its Accessories (AREA)
- Switches With Compound Operations (AREA)
Abstract
Description
La présente invention concerne un interrupteur de sécurité du type comprenant d'une part un boítier dans lequel est logé un bloc de contacts électriques, et d'autre part une tête de commande fixée au boítier de manière à prendre plusieurs positions différenciées par rotation autour d'un premier axe ; dans un tel interrupteur, la tête de commande présente d'une part au moins une fente d'introduction pour un actionneur et d'autre part un mécanisme de transmission muni d'un galet engageable par l'actionneur et susceptible de rotation autour d'un deuxième axe, perpendiculaire au premier axe, et d'un poussoir destiné à agir sur le bloc de contacts et mobile parallèlement au premier axe sous l'effet du mécanisme en réponse au déplacement de l'actionneur.The present invention relates to a safety switch of the type comprising on the one hand a housing in which is housed a block of electrical contacts, and on the other hand a control head fixed to the housing so as to take several differentiated positions by rotation around a first axis; in such a switch, on the one hand, the control head has at least one insertion slot for a actuator and on the other hand a transmission mechanism provided with an engaging roller by the actuator and capable of rotation about a second axis, perpendicular to the first axis, and a pusher intended to act on the contact block and mobile parallel to the first axis under the effect of the mechanism in response to displacement of the actuator.
Il est parfois adjoint à un tel interrupteur un électroaimant dont la fonction consiste à bloquer le mécanisme de transmission, et par là même l'actionneur resté accroché à ce mécanisme, pour permettre de commander à distance le verrouillage de l'actionneur et donc de l'organe - porte ou organe de machine - que l'on veut maintenir en position de sécurité. Dans de tels interrupteurs connus ( voir par exemple EP- 553 885 et WO 95/18 457 ), il est courant de disposer l'électroaimant avec son noyau mobile parallèlement à l'axe de déplacement du poussoir du bloc de contacts. Il est également connu ( voir FR-2 569 303 ) de disposer l'électroaimant transversalement pour bloquer un organe intermédiaire transmettant le mouvement d'un coulisseau du mécanisme de transmission au poussoir du bloc de contacts ; cet organe intermédiaire implique des risques de coincement supplémentaires.An electromagnet, the function of which is sometimes associated with such a switch consists in blocking the transmission mechanism, and thereby the actuator remaining attached to this mechanism, to allow remote locking control of the actuator and therefore of the organ - door or machine organ - that we want keep in a safe position. In such known switches (see for example EP-553 885 and WO 95/18 457), it is common to have the electromagnet with its movable core parallel to the axis of movement of the pusher of the contact block. It is also known (see FR-2,569,303) to arrange the electromagnet transversely to block an intermediate organ transmitting the movement a slide from the transmission mechanism to the contact block pusher; this intermediate body involves additional risks of jamming.
Il est souhaitable de réaliser de manière aussi simple que possible le dispositif de verrouillage interposé entre l'électroaimant et le mécanisme de transmission, plus particulièrement pour pouvoir l'associer avec un minimum de modification aussi bien à un électroaimant à verrouillage sous tension qu'à un électroaimant à verrouillage hors tension. Le dispositif de verrouillage doit de plus être conçu pour absorber sans dommage des efforts importants provenant de l'actionneur et pour interférer aussi peu que possible avec la chaíne cinématique de transmission au bloc de contacts.It is desirable to make the device as simple as possible interposed between the electromagnet and the transmission mechanism, plus particularly to be able to associate it with a minimum of modification as well to a locking electromagnet under voltage than a locking electromagnet off voltage. The locking device must also be designed to absorb without damage from significant efforts from the actuator and to interfere as little as possible with the kinematic chain of transmission to the contact block.
Selon l'invention, le noyau de l'électroaimant coopère avec l'organe de blocage par un dispositif de verrouillage suceptible d'être placé dans deux positions permettant le blocage du poussoir quand l'électroaimant est sous tension et respectivement hors tension.According to the invention, the core of the electromagnet cooperates with the blocking by a locking device capable of being placed in two positions allowing the blocking of the pusher when the electromagnet is energized and respectively off.
L'organe de blocage est de préférence un coulisseau de verrouillage guidé dans des glissières rectilignes du boítier perpendiculairement au premier axe et coopérant avec le noyau de l'électroaimant par un attelage à rampe d'actionnement réversible, par exemple une pièce à rampe de guidage retoumable.The blocking member is preferably a guided locking slide in rectilinear slides of the housing perpendicular to the first axis and cooperating with the electromagnet core by an actuating ramp coupling reversible, for example a part with retoumable guide ramp.
Le coulisseau de verrouillage coopère avantageusement avec une portée de blocage prévue sur un fourreau métallique emmanché sur la queue d'un poussoir lié au galet du mécanisme de transmission.The locking slide advantageously cooperates with a range of blocking provided on a metal sheath fitted on the tail of a linked pusher the roller of the transmission mechanism.
La description qui va être faite d'un mode de réalisation de l'invention, en regard des dessins annexés, explicite les avantages et résultats obtenus.The description which will be made of an embodiment of the invention, in look at the attached drawings, explain the advantages and results obtained.
La figure 1 représente en élévation et en coupe un interrupteur de sécurité conforme à l'invention, configuré en interrupteur à verrouillage sous tension, en position déverrouillée.Figure 1 shows in elevation and in section a safety switch in accordance with the invention, configured as an interlock switch under voltage, in unlocked position.
La figure 2 est la coupe 2-2 de la figure 1.Figure 2 is section 2-2 of Figure 1.
La figure 3 est une vue partielle de l'interrupteur de sécurité de la figure 1, en position verrouillée.Figure 3 is a partial view of the safety switch of Figure 1, in locked position.
La figure 4 est la coupe 4-4 de la figure 3.Figure 4 is section 4-4 of Figure 3.
La figure 5 montre l'interrupteur de sécurité configuré en interrupteur à verrouillage hors tension, en position déverrouillée.Figure 5 shows the safety switch configured as a safety switch. locking off, in unlocked position.
L' interrupteur de sécurité représenté sur les figures comprend un boítier 10
dans lequel sont logés un bloc de contacts électriques B et un électroaimant E. Le
boítier est fermé par un couvercle non indiqué. Une tête de commande 11 est fixée au
boítier de manière à pouvoir prendre quatre positions différentes par rotations
successives de 90° autour d'un axe X1. La tête 11 comprend une fente latérale 12 et
une fente supérieure 13 dans l'une ou l'autre desquelles on peut introduire un
actionneur A de forme spéciale en vue d'actionner les contacts du bloc B. Comme on
le sait, un tel actionneur est par exemple rattaché à une porte d'enveloppe ou un
organe de machine dont la sécurité impose la fermeture ou la venue dans une
certaine position, le bloc de contacts constatant la position de sécurité et la traduisant
par exemple en une autorisation de fonctionnement. Selon les cas; il peut être
avantageux d'engager l'actionneur A dans la fente 12 ou dans la fente 13.The safety switch shown in the figures includes a
La tête de commande 11 loge un mécanisme de transmission 14 muni d'un
galet toumant autour d'un axe X2 perpendiculaire à X1 et d'un poussoir suiveur 15; ce
mécanisme est de tout type connu et il est apte, notamment au moyen de la forme
particulière de l'actionneur et d'un ou deux galets de blocage 14a du galet toumant
14, sollicitables par l'actionneur, à interdire toute violation de la mise en oeuvre des
contacts. Le poussoir suiveur 15 en matière plastique est en saillie hors de la tête
vers l'intérieur du boítier, ce poussoir étant lié à une tête suiveuse 19 qui comprend
une rampe 19a guidant un pion ou axe du galet pour traduire le mouvement de
rotation du galet en un mouvement de translation du poussoir 15 ; celui-ci agit
directement sur un organe de commande 16 qui est propre au bloc de contacts B et
qui porte les contacts de celui-ci. Sur le poussoir 15 est emmanché un fourreau
métallique 17 qui ne participe pas à la transmission de mouvement au bloc de
contacts et qui est destiné à bloquer la tête suiveuse du mécanisme 14 quand l'ordre
en est transmis à la bobine de l'électroaimant, tout en soulageant le poussoir des
efforts de blocage. Selon les cas, le fourreau peut être emmanché à coulissement
doux sur le poussoir en restant libre de se déplacer par rapport à lui ou peut être
maintenu sur le poussoir par des moyens de retenue, d'encliquetage, et il est en
butée au moins en phase de verrouillage sur un épaulement 19b de la tête suiveuse
pour bloquer celle-ci; il peut être sollicité par un ressort de rappel indépendant, mais,
de façon plus simple, par la liaison de la tête suiveuse avec le galet, un ressort de
rappel associé à celui-ci suffit à rappeler l'ensemble en position de repos. Le fourreau
17 a une longueur inférieure à celle du poussoir et présente une portée d'appui 18
pour un organe de blocage, comme décrit plus loin, cette portée étant située à son
extrémité libre inférieure ou définie par une rainure.The
L'électroaimant E comporte un noyau mobile 20 mobile selon une direction X3
parallèle à X1 et sollicité par un ressort de rappel F, le noyau étant fixé à un support
21 d'entrainement d'un coulisseau 22 ; le support est mobile dans le boítier 10 selon
la direction X3 et il est guidé à cet effet dans des glissières 23 du boítier, tandis que le
coulisseau est mobile dans le boítier selon une direction X4 perpendiculaire à X1,X3
et est guidé dans des glissières rectilignes 24 du boítier. Une pièce d'attelage
retoumable 25 est engagée de façon amovible, par exemple encliquetée ou
emboítée, dans un évidement rainuré 21a du support 21 ; la pièce 25 présente une
rampe 26 coopérant avec un doigt suiveur 27 prévu à l'extrémité 22a du coulisseau
22 opposée à celle 22b qui coopère avec la portée 18 du fourreau 17. A son
extrémité 22b, le coulisseau 22 présente une fourchette 28 permettant de bloquer le
fourreau 17 sans intervenir sur le poussoir 15 (voir figure 4 ). Bien entendu, l'attelage
retoumable prévu entre l'électroaimant E et le poussoir 15 peut être agencé
différemment ; en particulier, la rampe peut appartenir à l'extrémité du coulisseau et
être conduite par un doigt du support 21. Le support peut être sollicité par un ressort
de rappel représenté de manière schématique sur les figures. The electromagnet E comprises a
Le fonctionnement de l'interrupteur de sécurité décrit va être expliqué en regard des figures 1 à 5.The operation of the described safety switch will be explained in see Figures 1 to 5.
Sur la figure 1, l'actionneur A est dégagé de la tête de commande 11 de sorte
que le mécanisme 14 est mis à l'état repos sous l'effet d'un ressort de rappel non
indiqué et bloqué dans cet état par un organe de verrouillage non représenté. Le
poussoir 15 et le fourreau métallique 17 sont maintenus en position basse par la
liaison de la tête suiveuse 19 avec le galet tournant et la liaison du fourreau avec le
galet ou le poussoir. L'organe 16 du bloc de contacts B est donc maintenu en position
basse et le bloc B est en position travail. L'électroaimant E est hors tension, de sorte
que le support 21 est mis en position haute par le ressort, ce qui tire le coulisseau 22
vers la gauche puisque le doigt 27 est logé vers l'extrémité de la partie gauche 26a,
par exemple verticale, de la rampe 26. Le fourreau est donc libre, et avec lui le tête 19
et le poussoir 15, de se déplacer si le mécanisme 14 est commuté.In FIG. 1, the actuator A is released from the
Lorsque l'actionneur est engagé dans la fente 12 ou 13 du boítier 10 (figure 3),
l'organe de verrouillage est effacé et le mécanisme 14 est mis à l'état travail, de sorte
que le poussoir 15 et le fourreau 17 sont amenés en position haute ; l'organe 16 du
bloc de contacts B est alors en position haute et le bloc en position travail. Si
l'électroaimant E est mis sous tension ( figure 3 ), le ressort est compnmé et le
support 21 descend, de sorte que le coulisseau est renvoyé vers la droite puisque le
doigt 27 vient en haut de la partie inclinée 26b de la rampe 26. L'extrémité droite 22b
du coulisseau vient s'engager sous la portée 18 du fourreau 17. Il en résulte que le
bloc de contacts reste en position travail et que l'actionneur A ne peut être extrait de
la tête de commande, ce qui signifie que la porte ou l'organe auquel est associé
l'interrupteur reste bloqué en position de sécurité.When the actuator is engaged in the
Si l'on veut assurer la même fonction de blocage lorsque l'électroaimant est
hors tension, il suffit de retoumer la pièce d'attelage 25 en l'engageant dans
l'évidement rainuré 21a du support 21 comme indiqué sur la figure 5. Il en résulte
l'inversion de la rampe 26. Le bloc B reste en position travail et l'actionneur A reste
enclenché dans le mécanisme 14 quand l'électroaimant E est désalimenté, ceci ayant
pour effet de faire descendre le support 21 et de repousser le coulisseau 22 vers la
droite puisque- le doigt 27 est alors dans le haut de la partie verticale 26a de la rampe
26.If we want to ensure the same blocking function when the electromagnet is
de-energized, simply re-twist the
On peut observer que, dans tous les cas, le ressort F est un élément de sécurité qui, sur coupure de l'alimentation de la bobine de l'électroaimant, fait revenir l'interrupteur à sa position initiale de repos (position verrouillée pour un électroaimant de verrouillage sous tension ou position déverrouillée pour un électroaimant de verrouillage hors tension ) .It can be observed that, in all cases, the spring F is an element of safety which, on interruption of the power supply to the solenoid coil, makes return the switch to its initial rest position (locked position for an electromagnet for locking under voltage or unlocked position for a solenoid power off).
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9608321A FR2750791B1 (en) | 1996-07-02 | 1996-07-02 | ELECTRIC MAGNET LOCKABLE SAFETY SWITCH |
| FR9608321 | 1996-07-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0817227A1 true EP0817227A1 (en) | 1998-01-07 |
| EP0817227B1 EP0817227B1 (en) | 2001-09-19 |
Family
ID=9493701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97401340A Expired - Lifetime EP0817227B1 (en) | 1996-07-02 | 1997-06-13 | Safety switch that may be locked with an electromagnet |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5861786A (en) |
| EP (1) | EP0817227B1 (en) |
| JP (1) | JP3824381B2 (en) |
| CN (1) | CN1061461C (en) |
| DE (1) | DE69706775T2 (en) |
| ES (1) | ES2160904T3 (en) |
| FR (1) | FR2750791B1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3982143B2 (en) * | 2000-03-15 | 2007-09-26 | オムロン株式会社 | Lock switch device |
| DE10146828A1 (en) * | 2001-09-18 | 2003-04-24 | Euchner Gmbh & Co | Locking system of a safety switch with a read head and an actuator |
| GB0405543D0 (en) * | 2004-03-10 | 2004-04-21 | Eja Ltd | Switch mechanism |
| DE502006007966D1 (en) | 2006-07-03 | 2010-11-11 | Siemens Ag | position switch |
| US7902480B2 (en) * | 2007-06-13 | 2011-03-08 | Hitachi, Ltd. | Vacuum insulated switchgear |
| US8017880B2 (en) * | 2008-06-26 | 2011-09-13 | Honeywell International Inc. | Safety switch |
| ITVI20130290A1 (en) * | 2013-12-06 | 2015-06-07 | Pizzato Elettrica Srl | SECURITY SWITCH WITH ELECTRONIC DRIVE |
| IT201600096402A1 (en) * | 2016-09-26 | 2018-03-26 | Pizzato Elettrica Srl | SAFETY SWITCH WITH DETECTION OF THE ACTIVATION OF AN AUXILIARY RELEASE COMMAND |
| CN111247614B (en) * | 2017-11-08 | 2022-07-08 | 彼扎特电气有限公司 | Safety switch for controlling the access opening of an industrial machine or installation |
| JP7122851B2 (en) * | 2018-04-13 | 2022-08-22 | 株式会社キーエンス | safety switch |
| DE102021109993B3 (en) * | 2021-04-20 | 2022-09-01 | Pilz Gmbh & Co. Kg | Safety switch with guard locking |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2569303A1 (en) * | 1984-08-16 | 1986-02-21 | Euchner & Co | Safety interlocked electrical switch |
| EP0553885A1 (en) * | 1992-01-31 | 1993-08-04 | Omron Corporation | Safety switch |
| DE4403061C1 (en) * | 1994-02-02 | 1995-06-22 | Bernstein Classic Gmbh & Co | Safety switching device enclosed by a housing |
| WO1995018457A1 (en) * | 1993-12-24 | 1995-07-06 | E.J.A. Engineering Plc | Safety switch assemblies |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3014825C2 (en) * | 1980-04-15 | 1982-10-21 | Siemens AG, 1000 Berlin und 8000 München | Power drive for electrical switching devices with elastic transmission of the drive force |
| US4901046A (en) * | 1987-06-09 | 1990-02-13 | Hubert Laurenz Naimer | Manually actuated on-off switch with electromagnetic release |
| CN88202206U (en) * | 1988-03-25 | 1988-11-09 | 付建生 | Electric switch |
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1996
- 1996-07-02 FR FR9608321A patent/FR2750791B1/en not_active Expired - Fee Related
-
1997
- 1997-06-13 DE DE69706775T patent/DE69706775T2/en not_active Expired - Lifetime
- 1997-06-13 EP EP97401340A patent/EP0817227B1/en not_active Expired - Lifetime
- 1997-06-13 ES ES97401340T patent/ES2160904T3/en not_active Expired - Lifetime
- 1997-06-25 US US08/882,287 patent/US5861786A/en not_active Expired - Lifetime
- 1997-07-02 CN CN97117120A patent/CN1061461C/en not_active Expired - Fee Related
- 1997-07-02 JP JP17675697A patent/JP3824381B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2569303A1 (en) * | 1984-08-16 | 1986-02-21 | Euchner & Co | Safety interlocked electrical switch |
| EP0553885A1 (en) * | 1992-01-31 | 1993-08-04 | Omron Corporation | Safety switch |
| WO1995018457A1 (en) * | 1993-12-24 | 1995-07-06 | E.J.A. Engineering Plc | Safety switch assemblies |
| DE4403061C1 (en) * | 1994-02-02 | 1995-06-22 | Bernstein Classic Gmbh & Co | Safety switching device enclosed by a housing |
Also Published As
| Publication number | Publication date |
|---|---|
| US5861786A (en) | 1999-01-19 |
| JP3824381B2 (en) | 2006-09-20 |
| DE69706775T2 (en) | 2002-04-18 |
| CN1061461C (en) | 2001-01-31 |
| DE69706775D1 (en) | 2001-10-25 |
| JPH113638A (en) | 1999-01-06 |
| FR2750791B1 (en) | 1998-10-09 |
| EP0817227B1 (en) | 2001-09-19 |
| CN1174386A (en) | 1998-02-25 |
| FR2750791A1 (en) | 1998-01-09 |
| ES2160904T3 (en) | 2001-11-16 |
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