EP0605820B1 - Interrupteur de sécurité - Google Patents

Interrupteur de sécurité Download PDF

Info

Publication number
EP0605820B1
EP0605820B1 EP19930120264 EP93120264A EP0605820B1 EP 0605820 B1 EP0605820 B1 EP 0605820B1 EP 19930120264 EP19930120264 EP 19930120264 EP 93120264 A EP93120264 A EP 93120264A EP 0605820 B1 EP0605820 B1 EP 0605820B1
Authority
EP
European Patent Office
Prior art keywords
key
actuator
pins
safety switch
switch according
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
Application number
EP19930120264
Other languages
German (de)
English (en)
Other versions
EP0605820A1 (fr
Inventor
David Drake
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.)
KA Schmersal GmbH and Co KG
Original Assignee
KA Schmersal GmbH and 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
Priority claimed from GB939300100A external-priority patent/GB9300100D0/en
Priority claimed from DE19934315376 external-priority patent/DE4315376C1/de
Application filed by KA Schmersal GmbH and Co KG filed Critical KA Schmersal GmbH and Co KG
Publication of EP0605820A1 publication Critical patent/EP0605820A1/fr
Application granted granted Critical
Publication of EP0605820B1 publication Critical patent/EP0605820B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H27/00Switches 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
    • H01H27/002Switches 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
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00Locks
    • Y10T70/70Operating mechanism
    • Y10T70/7441Key
    • Y10T70/7486Single key
    • Y10T70/7508Tumbler type
    • Y10T70/752Sliding tumblers
    • Y10T70/7531Transverse
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00Locks
    • Y10T70/70Operating mechanism
    • Y10T70/7441Key
    • Y10T70/7751With ball or roller
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00Locks
    • Y10T70/70Operating mechanism
    • Y10T70/7441Key
    • Y10T70/7757Push or pull key operation

Definitions

  • the invention relates to a safety switch with a housing which accommodates a switching device which can be actuated by an actuator which can be unlocked by means of a key which can be inserted into the housing and which can be displaced by a predetermined stroke by the key for actuating the switching device.
  • Such a safety switch or the like, in particular for protective covers. used for personal protection is known for example from EP-PS 0 175 156.
  • This has a housing in which the closing and opening of the contact by the like on the protective cover. attached key serving as an actuator is effected.
  • the latter actuates a switching drum, which is turned by the key from its rest position and thereby causes the closing and opening of the contact after its two axially displaceable roller parts have first been pushed apart by the key in order to unlock the roller for rotation.
  • a relatively complicated key is used here, it is the same for all types of this safety switch and is not individually designed.
  • the object of the invention is to provide a safety switch of the type mentioned, which can only be operated with an individual key.
  • a slot extending in the direction of insertion is arranged in the housing, which receives the actuator and in which a plurality of springs with their axes arranged parallel to one another and perpendicular to the direction of insertion of the key and spring-biased in the direction of the inserted key Pins protrudes, at least some of which locks the actuator with respect to the housing, the key having a coded pattern of receiving openings corresponding to the locking pins for unlocking the actuator and the pins being codable accordingly.
  • Fig. 1 shows a schematic and perspective cut open an embodiment of a safety switch.
  • FIG. 2a to 2c show the safety switch of Fig. 1 in section in different positions during operation.
  • Fig. 3 shows schematically and cut open perspective another embodiment of a safety switch.
  • Fig. 4a to 4e show the safety switch of Fig. 3 in section in different positions during operation.
  • the safety switch shown in Fig. 1 comprises a housing 1 which receives a block-shaped insert 2 which is provided with a plurality of parallel bores 3 arranged one above the other in two rows. Adjacent to a wall of the housing 1 is a wall 4 connected to the insert 2, which closes the bores 3 to the adjacent wall of the housing 1.
  • the bores 3 open into a slot 5 which extends through the insert 2 perpendicular to the axes of the bores 3.
  • the holes 3 each receive a pin 6.
  • the pins 6 each comprise a foot piece 7 and, separately therefrom, a rounded head piece 8.
  • the foot piece 7 has a blind hole for receiving one end of a compression spring 9, which is supported at the other end on the wall 4 and the associated pin 6 in the direction of the opposite wall of the housing 1 and presses so that the pins 6 can protrude with their head pieces 8 out of the holes 3 into the slot 5.
  • the insert 2 with the spring-loaded pins 6 can be inserted into the housing 1 pre-assembled.
  • the actuator 10 In the housing 1 is an essentially plate-shaped actuator 10 adjacent to the open ends of the holes 3 in the slot 5.
  • the actuator 10 has a foot part 11 which is connected in an articulated manner to a plunger 12, in particular a straight plunger, of a switching device 13 arranged in the housing 1.
  • the actuator 10 is movable along the adjacent end face of the insert 2 and has a series of through openings 14 for the pins 6. In the locked starting position, the pins 6 extend through the adjacent through opening 14 because the through openings 14 are in the locked position of the actuator 10 (Fig. 2a) are aligned with corresponding holes 3.
  • the actuator 10 which is preferably guided on its two narrow sides, does not take up the full width of the slot 5, but leaves enough space to be able to insert a key 15 parallel to the actuator 10 via a corresponding slot 16 in the housing 1.
  • the matching key 15 is provided with a pattern of receiving openings 17 in accordance with a coding provided.
  • head pieces 8 of different lengths are used in such a way that part of the head pieces 8 has a length corresponding to the width of the slot 5 and another part has a shorter length.
  • the shorter head pieces 8 lock the actuator 10 in the starting position (FIG. 2a), the longer head pieces 8 couple the actuator 10 with the key 15 in its inserted position (FIG. 2b) by falling into the receiving openings 17 of the latter, and also serve as a driver when pulling out the key 15.
  • the key 15 has no receiving openings 17, so that in the inserted position of the key 15 the end faces of the foot pieces 7 of the Head pieces 8 are aligned with one another and with the adjacent wall of the slot 5 (FIG. 2b).
  • the key 15 If the key 15 is now inserted, it presses the pins 10 which lock the actuator 10 and protrude from this with their head pieces 8 into the remaining part of the slot 5 with its leading, correspondingly bevelled edge against the force of the springs 9 back.
  • the pins 6 When the key 15 arrives at the foot piece 11 of the actuator 10 (FIG. 2 b), the pins 6 have fallen into the receiving openings 17 of the key 15 and the key 15 has been pushed in further, since then the head pieces 8 are entirely from the actuator 10 and key 15 are recorded and carried along, possible and leads to actuation of the switching device 13 (Fig. 2c).
  • the longer head pieces 8 not received by receiving openings 17 will lock the actuator 10 with respect to the insert 2.
  • the actuator 10 is also not to be unlocked.
  • the actuator 10 When the key 15 is withdrawn, the actuator 10 is withdrawn due to the head pieces 8 serving as drivers, until its foot part 11 strikes the insert 2. Then the key 15 is further pulled out, with the actuator 10 being locked, in the reverse order of insertion.
  • the lengths of the head pieces 8 are to be chosen correspondingly shorter.
  • pins 6 with head pieces 8 of the same length are used, while the foot pieces 7 also have the same length as in the previous embodiment.
  • the actuator 10 is also additionally provided with a slot 18 and, in addition to each pin 6, a ball 19 is arranged adjacent to the respective head piece 8. The balls 19 are pressed by the pins 6 against the opposite wall of the slot 5 (FIG. 4a), the head pieces 8 extending over the width of the slot 18.
  • the coding takes place here via a coding card 20 (FIG. 4b) which is inserted into the slot 18 and which has passage openings 21 in accordance with a coding provided.
  • the thickness of the encoding card 20 is approximately the width of the width remaining between the actuator 10 and the opposite wall of the slot 5 less than the width of the slot 18.
  • the pressing is also carried out.
  • the thickness of the coding card 20 and the key 15 are expediently chosen to be somewhat smaller than or equal to the radius of the balls 19.
  • Coding pieces 19 may be provided, of which those which do not fall into receiving openings 17 of the key 15 are designed as balls.
  • the foot pieces 7 can also be omitted and the springs 9 can attack the head pieces 8 directly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Push-Button Switches (AREA)
  • Lock And Its Accessories (AREA)

Claims (9)

  1. Interrupteur de sécurité comprenant un boîtier (1) recevant un mécanisme de manoeuvre (13) pouvant être actionné par un organe d'actionnement (10) qui peut être déverrouillé au moyen d'une clef (15) susceptible d'être insérée dans le boîtier (1) et qui peut être déplacé d'une course prédéterminée par la clef dans le but d'actionner le mécanisme de manoeuvre (13), caractérisé en ce qu'une fente (5) s'étendant dans le sens d'introduction est agencée dans le boîtier (1), laquelle reçoit l'organe d'actionnement (10) et dans laquelle s'étendent une pluralité de pompes (6) disposées avec leur axe parallèlement les uns aux autres et perpendiculairement à la direction d'introduction de la clef (15) et rappelées par ressort en direction de la clef (15) introduite, au moins une partie desdites pompes verrouillant l'organe d'actionnement (10) par rapport au boîtier (1), la clef (15) présentant un motif codé d'orifices de réception (17) correspondant aux pompes verrouillées (6) afin de déverrouiller l'organe d'actionnement (10) et les pompes (6) étant susceptibles d'être codées de manière appropriée.
  2. Interrupteur de sécurité selon la revendication 1, caractérisé en ce que les pompes (6) comportent chacune une tête (8), lesquelles, avec la clef (15) insérée, viennent en alignement sur la face extérieure opposée à l'organe d'actionnement (10), les têtes (8) étant reçues dans l'organe d'actionnement (10) et éventuellement dans la clef (15).
  3. Interrupteur de sécurité selon la revendication 2, caractérisé en ce que les têtes (8) sont prévues avec deux différentes longueurs, les têtes (8) de grande longueur étant, avec la clef (15) insérée, reçues dans des orifices de passage (14) de l'organe d'actionnement (10) et dans les orifices de réception (17) de la clef (15), tandis que les têtes (8) de faible longueur sont reçues dans les orifices de passage (14) de l'organe d'actionnement (10).
  4. Interrupteur de sécurité selon la revendication 2, caractérisé en ce que les têtes (8) sont toutes de même longueur, les pompes (6) présentant dans leur axe des éléments de codage (19) distincts mobiles le long des orifices de passage (14) de l'organe d'actionnement (10).
  5. Interrupteur de sécurité selon la revendication 4, caractérisé en ce qu'une carte de codage (20) présentant des orifices de passage appropriés est insérée entre les extrémités côte à côte des têtes (8) et des éléments de codage (19).
  6. Interrupteur de sécurité selon la revendication 4 ou 5, caractérisé en ce que les éléments de codage (19) sont des billes.
  7. Interrupteur de sécurité selon l'une des revendications 1 à 6, caractérisé en ce que l'organe d'actionnement (10) comporte une embase (11) servant de butée lors de l'insertion de la clef (15).
  8. Interrupteur de sécurité selon l'une des revendications 1 à 7, caractérisé en ce que les pompes (6) sont disposées dans des trous (3) d'un insert (2) du boîtier (1).
  9. Interrupteur de sécurité selon l'une des revendications 2 à 8, caractérisé en ce que chaque pompe (6) comprend un pied (7) séparé de la tête (8) et sollicité par un ressort.
EP19930120264 1993-01-05 1993-12-16 Interrupteur de sécurité Expired - Lifetime EP0605820B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9300100 1993-01-05
GB939300100A GB9300100D0 (en) 1993-01-05 1993-01-05 Key operable lock mechanism
DE19934315376 DE4315376C1 (de) 1993-05-08 1993-05-08 Sicherheitsschalter
DE4315376 1993-05-08

Publications (2)

Publication Number Publication Date
EP0605820A1 EP0605820A1 (fr) 1994-07-13
EP0605820B1 true EP0605820B1 (fr) 1996-05-29

Family

ID=25925732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930120264 Expired - Lifetime EP0605820B1 (fr) 1993-01-05 1993-12-16 Interrupteur de sécurité

Country Status (5)

Country Link
US (1) US5606881A (fr)
EP (1) EP0605820B1 (fr)
JP (1) JP2859116B2 (fr)
BR (1) BR9305402A (fr)
HK (1) HK1003484A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE508334C2 (sv) * 1996-09-16 1998-09-28 Assa Ab Låsanordning
EP0955614B1 (fr) * 1998-05-08 2005-08-24 Assa Ab Serrure à carte
US7000078B1 (en) * 1999-10-01 2006-02-14 Stmicroelectronics Ltd. System and method for maintaining cache coherency in a shared memory system
US6233985B1 (en) * 2000-01-14 2001-05-22 Fu-Chuan Huang Coupling lock
US6595032B2 (en) * 2001-11-01 2003-07-22 Wen-Chen Lin Lock cylinder-free lock device
US8820127B2 (en) * 2009-06-10 2014-09-02 Meir Avganim Locking mechanism and a locking device comprising the same

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2344473B2 (de) * 1973-09-04 1976-04-29 Josef Voss KG, 5040 Brühl Zylinderkern in einem zylinderschloss mit flachschluessel
JPS5174798A (ja) * 1974-12-24 1976-06-28 Sanhorotsuku Jugen Jomae
NO140145C (no) * 1977-04-06 1979-07-11 Elkem Spigerverket As Anordning ved laas.
NO146441C (no) * 1980-08-08 1982-09-29 Elkem Spigerverket As Anordning ved omkodbar hullkortlaas
WO1983001643A1 (fr) * 1981-10-28 1983-05-11 Pickles, Kenneth Commutateur de securite
JPS60112967A (ja) * 1983-11-21 1985-06-19 有限会社日本金具製作所 シリンダ−錠
DE3433048C2 (de) * 1984-09-08 1986-10-02 K.A. Schmersal Gmbh & Co, 5600 Wuppertal Elektrischer Schalter
FR2613121B1 (fr) * 1987-03-27 1993-12-10 Telemecanique Electrique Interrupteur a cle verrouillable par actionneur
JPS63153448U (fr) * 1987-03-30 1988-10-07
JPS63300178A (ja) * 1987-05-29 1988-12-07 日本カバ株式会社 顧客確認機能を有する電子解施錠装置
DE8800701U1 (de) * 1988-01-21 1988-03-17 Siemens AG, 1000 Berlin und 8000 München Befehlsschalter
JPH01134166U (fr) * 1988-03-08 1989-09-13
NO166248C (no) * 1988-05-24 1991-06-19 Trioving As Anordning ved omkodbar hullkortlaas.
DE4039652C1 (en) * 1990-12-12 1992-03-05 Kloeckner-Moeller Gmbh, 5300 Bonn, De Detachable safety-interlock for electrical switch - has key guides chamfered to facilitate final engagement with coded cam
US5355701A (en) * 1993-03-01 1994-10-18 Tobias Marc W Method and apparatus for decoding a pin tumbler lock
US5343724A (en) * 1993-05-07 1994-09-06 Trioving A.S. Lock arrangement employing mechanically acting code card and key card

Also Published As

Publication number Publication date
JPH06223682A (ja) 1994-08-12
US5606881A (en) 1997-03-04
HK1003484A1 (en) 1998-10-30
EP0605820A1 (fr) 1994-07-13
JP2859116B2 (ja) 1999-02-17
BR9305402A (pt) 1994-08-02

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