WO2021156009A1 - Gâchette de sécurité - Google Patents

Gâchette de sécurité Download PDF

Info

Publication number
WO2021156009A1
WO2021156009A1 PCT/EP2021/050096 EP2021050096W WO2021156009A1 WO 2021156009 A1 WO2021156009 A1 WO 2021156009A1 EP 2021050096 W EP2021050096 W EP 2021050096W WO 2021156009 A1 WO2021156009 A1 WO 2021156009A1
Authority
WO
WIPO (PCT)
Prior art keywords
plunger
locking
switching
locking device
actuator
Prior art date
Application number
PCT/EP2021/050096
Other languages
German (de)
English (en)
Inventor
Uwe RÖBKE
Carsten Both
Original Assignee
Steute Technologies Gmbh & Co. Kg
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 Steute Technologies Gmbh & Co. Kg filed Critical Steute Technologies Gmbh & Co. Kg
Priority to CN202190000292.2U priority Critical patent/CN218676909U/zh
Publication of WO2021156009A1 publication Critical patent/WO2021156009A1/fr

Links

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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H15/00—Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
    • H01H15/02—Details
    • H01H15/06—Movable parts; Contacts mounted thereon
    • H01H15/10—Operating parts
    • H01H15/102—Operating parts comprising cam devices
    • H01H15/107—Operating parts comprising cam devices actuating conventional selfcontained microswitches

Definitions

  • the invention relates to a safety locking device for an openable shut-off device according to the preamble of claim 1.
  • solenoid interlocks The task of solenoid interlocks is to enable machines with moving parts to be switched on, for example, only when the area to be opened - usually a door, flap or the like - a device for locking this machine is closed, and an opening of the To enable the door or flap only when the machine is switched off.
  • solenoid interlocks usually consist of a switching device that is attached to one part - usually the immovable part of the shut-off device - and an actuator or key that is located on the other part - usually the part of the shut-off device that can be opened tung - is located.
  • the switching device usually has two switching elements and egg NEN electromagnets, the electromagnet is energized depending on the machine standstill and it acts in interaction with a return spring of its armature to lock or unlock the safety locking device.
  • One of the switching elements detects the armature position of the electromagnet and also interrupts the power supply to the machine when the safety locking device is unlocked.
  • the door or flap If the door or flap is now opened, its open state is detected, for example, mechanically via a cam wheel or a cam disk and the second switching element is actuated so that it also interrupts the power supply to the machine.
  • the cam wheel or the cam disk also fixes the armature of the electromagnet in its unlocked position and thus the first switching element in the interrupted state in the geöffne th state of the door - possibly via a suitable mechanism. This means that the machine can only be started up again when the door or flap is closed.
  • the document DE 4403061 C1 shows a device in which the desired mode of action is achieved in that the positions of the key and the electromagnetically actuated locking device via a combination of plunger, cam and locking lever in the desired manner on the switching elements are transferred.
  • the aforementioned examples of the prior art have the disadvantages of a large number of components and high manufacturing costs.
  • the task of the invention is therefore to provide a solenoid interlock whose mode of action essentially corresponds to that of the interlocking system according to the state of the art, but which has fewer components and / or a lower manufacturing cost.
  • the actuator can be inserted into a head area of the switching device and interacts with a latching element which is coupled to a first and a second switching element and an electromagnetically activated blocking or release element via an axially displaceable plunger.
  • a latching element which is coupled to a first and a second switching element and an electromagnetically activated blocking or release element via an axially displaceable plunger.
  • an actuating arm designed as a balance beam is mounted, which actuates one of the switching elements with each of the two free ends.
  • the desired mode of action is achieved in one embodiment using the mobility of the actuating rocker by means of suitable, mutually coordinated force curves of the respective return springs of the switching elements.
  • the mode of operation is such that when the actuator is not inserted, the first and the second switching element are actuated, that depending on the locking or release element, the actuator is fixed by locking the latching element by the plunger in the head area, and that when the locking is released, the second switching element is actuated .
  • the actuating rocker is mounted eccentrically on the plunger.
  • switching elements can be used which require switching forces of the same magnitude, that is to say, for example, have return springs of the same design. Because of the different lengths of the actuating arms, the desired switching behavior is then also obtained.
  • FIG. 1 shows a perspective view of a safety locking device
  • Fig. 2 is a schematic diagram of a working according to the closed-circuit principle, he inventive safety locking device in the closed and closed position,
  • Fig. 3 is a schematic diagram of the safety locking device according to Fig. 2 in the closed and unlocked position
  • FIG. 4 shows a schematic diagram of an optional unlocking aid element for the safety tumbler according to FIG. 2,
  • FIG. 5 shows a schematic diagram of the safety locking device according to FIG. 2 in the open position
  • FIG. 6 shows a schematic diagram of a safety locking device according to the invention operating according to the open-circuit principle in the closed and to be held position
  • FIG. 7 is a schematic diagram of the safety locking device according to FIG. 6 in the closed and unlocked position.
  • FIG. 8 shows a schematic diagram of the safety locking device according to FIG. 6 in the open position.
  • FIG. 1 shows a perspective view of a typical safety locking device 1, as it also corresponds to the prior art. It has a Wegvorrich device 2, which is attached to one part, usually on the immovable part of the shut-off device, and an actuator 3, which is located on the other part, usually the openable part of the shut-off device.
  • the switching device 2 consists of a switching area 4, which essentially accommodates the electromechanical components of the safety locking device, and a head area 5, which essentially contains the components that establish the mechanical operative connection between the switching device and the actuator.
  • Fig. 2 shows a schematic diagram of an operating according to the quiescent current principle safety locking device according to the invention in the closed and locked position, the head area 5 and a housing wall 6 of the Wegbe area 4 are only indicated here.
  • “closed-circuit principle” means that an electromagnet 7 permanently connected to the housing of the switching area 4 is energized when the device protected by the shut-off device is in a safe state for an operator, for example a machine in the shut-off device is at a standstill. In the situation shown in FIG. 2, this is not the case, so the electromagnet 7 is not energized. Therefore, the armature 8 is due to the force transmitted via egg NEN plunger 9 of a preloaded plunger return spring 10 in its extended position.
  • the plunger 9 has an upper (plunger) section 12 firmly connected therewith.
  • Also on the plunger return spring 10 is by means of the lower part of the plunger 9 of the upper Stêtelab cut 12 in the plunger groove 13 of a locking disk 14 rotatably mounted about its central axis in the head area is pressed.
  • the locking disk 14 forms the locking element for the actuator 3.
  • the locking disk 14, which is locked against rotation, is in engagement with the actuator 3 via the actuator groove 29, which prevents the actuator 3 from being pulled out of the head area 5 and thus prevents the shut-off device Opening is secured.
  • the lower part of the tappet 9 and the upper tappet section 12 are made in one piece, with the backlash reducing spring 11 then having to be omitted due to the assembly. This can be used in situations in which either compliance with a defined rest position of the armature 8 is not relevant or the rest position is otherwise ensured, for example by gravity.
  • Fig. 3 shows a schematic diagram of the safety locking device according to FIG. 2 in the closed and unlocked position.
  • the device protected by the shut-off device is in a safe state for an operator, for example a machine in the shut-off device is at a standstill.
  • the electromagnet 7 is energized, which is why the armature 8 is pulled against the force of the plunger return spring 10 from the locking disc 14 on gerich tet.
  • the armature 8 is in engagement with the lower part of the plunger 9 and takes it with it.
  • the upper plunger 12 firmly connected to the lower part of the plunger 9 is pulled out of the plunger groove 13 of the locking disc 14, whereby the locking disc 14 is released and can rotate. This makes it possible to pull the actuator 3 out of the head area, the locking disk 14 being rotated following the movement of the actuator 3.
  • a bearing element 15 is attached, in which the actuating rocker 16 is mounted in the manner of a balance beam.
  • the bearing element 15 and the actuating rocker 16 are carried along, whereby the actuating rocker 16 presses against a first switching plunger 17 of a first switching element 18 and a second switching plunger 19 of a second switching element 20.
  • the two switch plungers 17 and 19 are held in the extended position by different strengths or different Lich strongly biased switch plunger return springs 21 and 22 with different force.
  • the second switching element 20 serves to capture the position of the armature 8 and thus the unlocked position of the upper plunger 12.
  • the respective forces of the switching plunger return springs 21 and 22 are coordinated with one another and with the actuation path of the armature 8 in such a way that When the electromagnet 7 is energized and the actuating rocker 16 is deflected, only the second switch plunger 19 is actuated against the lower force of the second switch plunger return spring 22.
  • the stronger first Switching tappet return spring 21 holds the first switching tappet 17 in the inoperative position.
  • the switching state of the second switching element 20 is indicative of the unlocked state of the safety locking device 1. The evaluation of this switching state takes place in such a way that the device to be protected cannot be switched on again in the unlocked state.
  • FIG. 4 shows a detail of another embodiment of the safety locking device according to FIG. 2, in which the upper plunger section 12 is resiliently connected to the lower part of the plunger 9.
  • the plunger 9 is thus designed to be telescopic.
  • the armature 8 is tightened as described in Fig. 3 and is at the same time due to external action, the Bermmflä surface between the upper plunger 12 and the ram groove 13 is not force-free, ver be prevented that when in the ram groove 13 jammed upper
  • the plunger 12 of the armature does not reach the end position and thereby the actuation of the second switching plunger 19 is omitted despite the safe state of the protected device before.
  • the armature 8 when the electromagnet 7 is energized, the armature 8 could be pulled into its end position as intended, even with the upper plunger 12 jamming, the plunger 9 being a biasing spring 23 via a suitable element, for example a locking washer 24, against an opposite surface of the upper ram 12 biases.
  • a suitable element for example a locking washer 24, against an opposite surface of the upper ram 12 biases.
  • Fig. 5 shows a schematic diagram of the safety locking device according to FIG. 2 in geöffne ter position.
  • the actuator 3 was pulled out of the head area 5 and the locking disk 14 was thereby rotated.
  • ei ne eccentric contour 25 of the locking disk 14 comes into contact with the upper plunger section 12 and actuates this and thus the lower part of the plunger 9 beyond the position reached with the end position of the armature 8 against the forces of the plunger return spring 10 and the backlash reducing spring 11 in Direction of the switching elements 18 and 20 until the locking disc reaches its open position is sufficient, in which the upper plunger section 12 engages in a latching recess 26 of the contour 25.
  • the plunger 9 takes the bearing element 15 and thus the actuator swing arm 16 with it.
  • the actuating rocker 16 pivots as soon as the second switch plunger 19 has reached its end position, around the point of contact with the second switch plunger 19 against the original pivoting direction and actuates the first switch plunger 17 of the first Switching element 18.
  • the Siemenszu status of the first switching element 18 is indicative of the open status of the safety locking device 1. The evaluation of this switching status he follows to the effect that switching on the device to be protected is not possible.
  • working current principle means that an electromagnet 7 permanently connected to the housing of the switching area 4 is energized when the device protected by the shut-off device is in a dangerous condition for an operator, for example a level in the shut-off device machine is in operation. This is the case in the situation shown in FIG. 6, the electromagnet 7 is therefore energized. As a result, the armature 8 is pulled into its retracted position against the force of the pretensioned tappet return spring 10 transmitted via the lower part of the tappet 9.
  • Fig. 7 shows a schematic diagram of the safety locking device according to FIG. 6 in the closed and unlocked position.
  • the electromagnet 7 is de-energized, which is why the armature 8 is pressed away from the locking disk 14 by the force of the plunger return spring 10 transmitted via the plunger 9. The resulting effects correspond to the manner described with reference to FIG. 3.
  • Fig. 8 shows a schematic diagram of the safety locking device according to FIG. 6 in geöffne ter position.
  • the actuator 3 was pulled out of the head area 5 and the locking disk 14 was thereby rotated.
  • egg ne locking contour 25 of the locking disc 14 comes into contact with the upper Stuteelab section 12 and actuates this and thus the lower part of the plunger 9 and the armature 8 beyond the position shown in Fig. 7 also against the force of one on one with the upper Plunger 12 engaged return sleeve 27 we end armature return spring 28 in the direction of the switching elements 18 and 20 until the locking disc reaches its open position in which the upper Stuteelab section 12 engages in a locking recess 26 of the locking contour 25.
  • the resulting effects correspond to the manner described with reference to FIG.
  • the first and second switch plunger return springs 21 and 22 are sufficiently strong to ensure a complete return of the armature 8 including the plunger 9 and including its upper portion 12, which is why the return sleeve 27 and the armature return spring 28 are omitted.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Magnetically Actuated Valves (AREA)
  • Lock And Its Accessories (AREA)

Abstract

L'invention concerne une gâchette de sécurité (1) comportant un dispositif de commutation (2) et un actionneur (3), ledit actionneur (3) pouvant être inséré dans une zone de tête (5) du dispositif de commutation (2) et coopérant avec un élément d'encliquetage, qui est couplé par l'intermédiaire d'un coulisseau (9) monté coulissant dans le sens axial à un premier et à un second élément de commutation (18, 20) ainsi qu'à un élément de blocage ou de libération pouvant être activé par voie électromagnétique, de sorte que lorsque l'actionneur (3) n'est pas inséré, les deux éléments de commutation (18, 20) sont actionnés, qu'en fonction de l'élément de blocage ou de libération l'actionneur (3) est fixé dans la zone de tête (5) par blocage de l'élément d'encliquetage par le coulisseau (9) et, lorsque le blocage est libéré, le second élément de commutation (20) est actionné, un élément oscillant d'actionnement (16) conçu sous forme de fléau de balance étant monté à l'extrémité du coulisseau (8) située à l'opposé de l'élément d'encliquetage et actionnant par chacune de ses deux extrémités libres respectivement l'un des éléments de commutation (18, 20).
PCT/EP2021/050096 2020-02-03 2021-01-05 Gâchette de sécurité WO2021156009A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202190000292.2U CN218676909U (zh) 2020-02-03 2021-01-05 安全锁定装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202020100575.8 2020-02-03
DE202020100575.8U DE202020100575U1 (de) 2020-02-03 2020-02-03 Sicherheitszuhaltung

Publications (1)

Publication Number Publication Date
WO2021156009A1 true WO2021156009A1 (fr) 2021-08-12

Family

ID=74181192

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/050096 WO2021156009A1 (fr) 2020-02-03 2021-01-05 Gâchette de sécurité

Country Status (3)

Country Link
CN (1) CN218676909U (fr)
DE (1) DE202020100575U1 (fr)
WO (1) WO2021156009A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE34396E (en) * 1984-08-16 1993-10-05 Helmut Letzel Safety interlock switching device for protecting equipment
DE4403061C1 (de) 1994-02-02 1995-06-22 Bernstein Classic Gmbh & Co Durch ein Gehäuse umschlossene Sicherheitsschaltvorrichtung
EP0977228A2 (fr) * 1998-07-27 2000-02-02 Pizzato Elettrica S.r.l. Interrupteur électromécanique de sécurité à clé avec dispositif de verrouillage électromagnétique
EP1876623A1 (fr) * 2006-07-03 2008-01-09 Siemens Aktiengesellschaft Interrupteur de position de sécurité
EP1876622B1 (fr) 2006-07-03 2010-09-29 Siemens Aktiengesellschaft interrupteur de position

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6469265B1 (en) * 2001-06-05 2002-10-22 Delphi Technologies, Inc. Method and apparatus for a limit switch
GB0705174D0 (en) * 2007-03-17 2007-04-25 Eja Ltd Safety switch
DE102008050892A1 (de) * 2008-09-25 2010-04-08 Euchner Gmbh + Co. Kg Vorrichtung zum Überwachen des Zustandes einer Schutzeinrichtung einer Maschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE34396E (en) * 1984-08-16 1993-10-05 Helmut Letzel Safety interlock switching device for protecting equipment
DE4403061C1 (de) 1994-02-02 1995-06-22 Bernstein Classic Gmbh & Co Durch ein Gehäuse umschlossene Sicherheitsschaltvorrichtung
EP0977228A2 (fr) * 1998-07-27 2000-02-02 Pizzato Elettrica S.r.l. Interrupteur électromécanique de sécurité à clé avec dispositif de verrouillage électromagnétique
EP1876623A1 (fr) * 2006-07-03 2008-01-09 Siemens Aktiengesellschaft Interrupteur de position de sécurité
EP1876622B1 (fr) 2006-07-03 2010-09-29 Siemens Aktiengesellschaft interrupteur de position

Also Published As

Publication number Publication date
DE202020100575U1 (de) 2021-05-05
CN218676909U (zh) 2023-03-21

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