EP0666582A1 - Dispositif d'interrupteur de sécurité enfermé dans un boîtier - Google Patents
Dispositif d'interrupteur de sécurité enfermé dans un boîtier Download PDFInfo
- Publication number
- EP0666582A1 EP0666582A1 EP94119905A EP94119905A EP0666582A1 EP 0666582 A1 EP0666582 A1 EP 0666582A1 EP 94119905 A EP94119905 A EP 94119905A EP 94119905 A EP94119905 A EP 94119905A EP 0666582 A1 EP0666582 A1 EP 0666582A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- locking
- locking device
- safety switching
- switching device
- 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
-
- 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
Definitions
- the present invention relates to a safety switching device enclosed by a housing according to the preamble of claim 1.
- these safety switching devices are designed so that they lock the protective devices until they stand still and there is no risk of injury when intervening.
- the protective device can only be opened when the key can be removed from the housing enclosing the safety switching device, the plunger then being displaced axially in such a way that it actuates the electrical switch, as a result of which the circuit of the machine motor is interrupted.
- electromagnetically actuated locking devices are known (EP 0 553 885, DE 38 10 287) with which the axial mobility is possible the plunger is blocked until one, for example the control interrogating the standstill of the machine signals a release, so that only in this case the locking device is disengaged and the plunger can be moved. While moving it at the same time, the key can be removed and the protective device unlocked.
- a disadvantage of the known safety switching devices is that the arrangement of the locking device is not readily selectable, so that an adaptation to changed machine-side conditions that is sometimes necessary is not possible.
- the present invention is therefore based on the object of designing a safety switching device of the generic type in such a way that the placement of the locking device within the housing is freely selectable, depending on the requirement.
- the switch actuated by the switching wheel and the locking device can in principle be arranged at any point within an angular range of 360 °.
- the essence of the invention is that the switch is no longer actuated directly by the plunger, but practically via a deflection.
- the switch like the blocking device or a monitoring switch coupled to it, is transverse to the direction of movement the plunger can be arranged.
- An arrangement in which all three components mentioned are arranged laterally to the tappet is particularly space-saving.
- the locking device When the locking device is actuated, which, as mentioned, is carried out by an appropriately designed machine control, the monitoring switch is actuated simultaneously by the locking lever and a switch on the machine is interrupted.
- the switching wheel is locked by engaging the Locking lever, the locking lever being pivoted accordingly by the spring force of the locking device or by a spring bolt acting separately on the locking lever, the activation switch is released at the same time by actuating the monitoring switch.
- the monitoring switch remains in its interrupted position since the locking lever is not actuated.
- a safety switching device shown in the figures is enclosed by a housing 1 and can be actuated with a key 2 which can be inserted therein.
- the safety device consists of a plunger 3 which can be actuated by the key 2 and which is axially displaceably mounted, wherein in the operating positions shown in FIGS. 1, 3 and 4 it engages in the key 2 in a manner known per se, that is to say assumes an uppermost position .
- the plunger 3 in the exemplary embodiments shown in FIGS. 1 to 3 is provided with a pin 14 which is guided in an elongated hole 15 of a cam disk 5 which forms a ratchet wheel and is pivotably mounted on a shaft 17 .
- the tappet 3 is moved up or down in accordance with the rotational movement of the cam disk 5.
- a switch 4 Transverse to the plunger 3, a switch 4 is arranged, with which a machine motor (not shown) can be switched on or off, a switching element 13 of the switch 4 engaging in a curved recess in the cam disk 5 and likewise being moved axially during its pivoting movement, so that each after the position of the cam disc 5 and after the position of the tappet 3, the machine motor is switched on or off.
- the cam disc 5 is further provided with a nose 10 into which a a pivoting blocking hook 9 engages a locking lever 8.
- the locking lever 8 is mounted on a pivot axis 11, around which it can be pivoted.
- a monitoring switch 7 is arranged on the locking lever 8, the switching pin of which carries out a parallel, but opposite, lifting movement to the lifting movement of the locking device 6.
- the lock can be released via an emergency release in the form of a cam 16 coupled to the locking device 6, although this requires a special tool that is not accessible to everyone.
- the locking device 6 is connected in the region to the locking lever 8 which is assigned to the cam disk 5.
- the safety switching device In a position corresponding to FIG. 1, which results when the machine motor is in the switched-on operating state, the safety switching device is released as a whole and consequently access to machine parts previously protected by protective devices by energizing the electromagnetically actuated locking device 6, in which the connected locking lever 8 in Direction of the locking device 6 is moved.
- the excitation command is issued by a machine controller that monitors the run-on time of the machine parts.
- the plunger 3 By releasing the locking lever 8 from its blocking position, the plunger 3 can be moved freely, so that the key 2 can be pulled out of the housing. Because of this, which inevitably takes place in a known manner Axial displacement of the plunger 3, the cam disc is pivoted so that it actuates the switching element 13 by means of the curved recess 12 such that the switch 4 interrupts the electrical line to the machine motor. An unintentional switch-on of the machine with the protective devices open is therefore excluded.
- FIG. 2 This position can be seen in FIG. 2.
- the locking lever 8 is pivoted out or the locking device 6 is tightened by the electromagnet, the switching pin 18 of the monitoring switch 7 is pulled out.
- a connected, not shown switch on the machine is interrupted. If a malfunction of the locking device 6 now occurs, for example due to a break in a spring with which the locking lever 8 is pivoted into the locking position according to FIG. 1 after the electromagnet has been switched off, so that the locking lever 8 remains in its position shown in FIG. 2 , the monitoring switch 7 also remains in this position in which the switch is interrupted. It is not possible to start up the machine without repairing the damage, which represents a significant safety improvement.
- FIG. 4 Such an embodiment variant is shown in FIG. 4. Both the locking device 6 and the monitoring switch 7 and the switch 4 are arranged laterally to the plunger 3, so that the direction of movement of their switching elements is transverse to that of the plunger 3.
- the monitoring switch 7 is arranged here on the switch 4, which means a particularly space-saving design.
- the ratchet wheel is designed in the form of a camshaft 19, on which a crank 20 is articulated, which is connected to the switching element 13 of the switch 4, so that the switch 4 is actuated in accordance with the tappet movement-dependent rotation of the camshaft 19.
- the tappet 3 is connected in an articulated manner to the camshaft 19, with a deflection caused by the rotational movement being readily accepted.
- a spring bolt 21 is provided which is supported on an arm of the locking lever 8 and presses the hook 9 into the camshaft 19 in such a way that the nose 10 is securely engaged.
- an electromagnetically actuated locking device can be used which is not spring-loaded in the excited or de-energized position. This means that a very simple embodiment of a magnetic switch can be used, which then does not have to have a spring.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Mechanisms For Operating Contacts (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4403061A DE4403061C1 (de) | 1994-02-02 | 1994-02-02 | Durch ein Gehäuse umschlossene Sicherheitsschaltvorrichtung |
DE4403061 | 1994-02-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0666582A1 true EP0666582A1 (fr) | 1995-08-09 |
EP0666582B1 EP0666582B1 (fr) | 1997-09-17 |
Family
ID=6509226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94119905A Expired - Lifetime EP0666582B1 (fr) | 1994-02-02 | 1994-12-16 | Dispositif d'interrupteur de sécurité enfermé dans un boîtier |
Country Status (4)
Country | Link |
---|---|
US (1) | US5584378A (fr) |
EP (1) | EP0666582B1 (fr) |
DE (1) | DE4403061C1 (fr) |
ES (1) | ES2107110T3 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1061461C (zh) * | 1996-07-02 | 2001-01-31 | 施耐德电器工业公司 | 可用电磁铁锁定的安全开关 |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4328297C1 (de) * | 1993-08-23 | 1995-02-23 | Euchner & Co | Sicherheitsschalter |
FR2751122B1 (fr) * | 1996-07-09 | 1998-09-11 | Schneider Electric Sa | Interrupteur de securite a actionneur blocable |
US6283514B1 (en) * | 1996-08-16 | 2001-09-04 | K. A. Schmersal Gmbh & Co. | Apparatus for monitoring and controlling access to a restricted area |
US6539760B1 (en) * | 1999-05-24 | 2003-04-01 | K.A. Schmersal Gmbh & Co. | Monitoring device |
US6944774B2 (en) | 1999-06-18 | 2005-09-13 | Zoom Telephonics, Inc. | Data flow control unit |
SE521570C2 (sv) * | 1999-09-10 | 2003-11-11 | Abb Ab | Sätt och anordning vid förregling |
JP3982143B2 (ja) * | 2000-03-15 | 2007-09-26 | オムロン株式会社 | ロックスイッチ装置 |
US6515239B2 (en) | 2001-02-23 | 2003-02-04 | Gregory Brian Marchant | Motivational apparatus for controlling use of electronic devices and method of use |
CN1333317C (zh) * | 2003-02-13 | 2007-08-22 | 神达电脑股份有限公司 | 保密装置 |
FR2862810B1 (fr) * | 2003-11-21 | 2006-01-06 | Schneider Electric Ind Sas | Interrupteur de position de securite |
TWI253369B (en) * | 2005-01-14 | 2006-04-21 | Univ Nat Taiwan | A safety apparatus for preventing industrial safety problems of machine tools caused by device-loading gears |
JP4673661B2 (ja) * | 2005-04-26 | 2011-04-20 | Idec株式会社 | 安全スイッチ |
EP1876622B1 (fr) * | 2006-07-03 | 2010-09-29 | Siemens Aktiengesellschaft | interrupteur de position |
US7429708B1 (en) * | 2007-06-22 | 2008-09-30 | Eja, Limited | Safety switch |
CN102881512B (zh) * | 2012-09-24 | 2015-10-14 | 无锡市新一代电力电器有限公司 | 具有自由脱扣功能的手动快速合闸断路器机构 |
DE202020100575U1 (de) | 2020-02-03 | 2021-05-05 | Steute Technologies Gmbh & Co. Kg | Sicherheitszuhaltung |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3309372A1 (de) * | 1983-03-16 | 1984-09-27 | Hans & Jos. Kronenberg Gmbh, 5060 Bergisch Gladbach | Sicherheitsschalter |
EP0171453A1 (fr) * | 1984-08-16 | 1986-02-19 | Letzel, Helmut | Dispositif de verrouillage de sécurité de dispositifs protecteurs pour prévenir l'accès dans des zones dangereuses |
EP0553885A1 (fr) * | 1992-01-31 | 1993-08-04 | Omron Corporation | Interrupteur de sécurité |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3100862C2 (de) * | 1981-01-14 | 1984-02-09 | K.A. Schmersal Gmbh & Co, 5600 Wuppertal | Sicherheitsschalter |
DE3112097C2 (de) * | 1981-03-27 | 1990-03-29 | Euchner & Co, 7022 Leinfelden-Echterdingen | "Sicherheitsschalter" |
DE3330109C2 (de) * | 1983-08-20 | 1986-01-02 | K.A. Schmersal Gmbh & Co, 5600 Wuppertal | Elektrischer Schalter |
DE3430090A1 (de) * | 1984-08-16 | 1986-03-06 | Euchner & Co, 7022 Leinfelden-Echterdingen | Sicherheitsschalter |
FR2613121B1 (fr) * | 1987-03-27 | 1993-12-10 | Telemecanique Electrique | Interrupteur a cle verrouillable par actionneur |
-
1994
- 1994-02-02 DE DE4403061A patent/DE4403061C1/de not_active Expired - Fee Related
- 1994-12-16 EP EP94119905A patent/EP0666582B1/fr not_active Expired - Lifetime
- 1994-12-16 ES ES94119905T patent/ES2107110T3/es not_active Expired - Lifetime
-
1995
- 1995-01-30 US US08/380,022 patent/US5584378A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3309372A1 (de) * | 1983-03-16 | 1984-09-27 | Hans & Jos. Kronenberg Gmbh, 5060 Bergisch Gladbach | Sicherheitsschalter |
EP0171453A1 (fr) * | 1984-08-16 | 1986-02-19 | Letzel, Helmut | Dispositif de verrouillage de sécurité de dispositifs protecteurs pour prévenir l'accès dans des zones dangereuses |
EP0553885A1 (fr) * | 1992-01-31 | 1993-08-04 | Omron Corporation | Interrupteur de sécurité |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1061461C (zh) * | 1996-07-02 | 2001-01-31 | 施耐德电器工业公司 | 可用电磁铁锁定的安全开关 |
Also Published As
Publication number | Publication date |
---|---|
ES2107110T3 (es) | 1997-11-16 |
DE4403061C1 (de) | 1995-06-22 |
EP0666582B1 (fr) | 1997-09-17 |
US5584378A (en) | 1996-12-17 |
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