EP0201620A1 - Serrure-commutateur - Google Patents

Serrure-commutateur Download PDF

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Publication number
EP0201620A1
EP0201620A1 EP85106099A EP85106099A EP0201620A1 EP 0201620 A1 EP0201620 A1 EP 0201620A1 EP 85106099 A EP85106099 A EP 85106099A EP 85106099 A EP85106099 A EP 85106099A EP 0201620 A1 EP0201620 A1 EP 0201620A1
Authority
EP
European Patent Office
Prior art keywords
lock
cylinder
key
contact
switch
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
Application number
EP85106099A
Other languages
German (de)
English (en)
Other versions
EP0201620B1 (fr
Inventor
Hermann Dipl.-Ing. Bühl
Edmund Höhn
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.)
Hauck GmbH
Original Assignee
Hauck GmbH
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 Hauck GmbH filed Critical Hauck GmbH
Priority to DE8585106099T priority Critical patent/DE3561779D1/de
Priority to EP85106099A priority patent/EP0201620B1/fr
Priority to AT85106099T priority patent/ATE32803T1/de
Publication of EP0201620A1 publication Critical patent/EP0201620A1/fr
Application granted granted Critical
Publication of EP0201620B1 publication Critical patent/EP0201620B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00—Carrying-off electrostatic charges
    • H05F3/02—Carrying-off electrostatic charges by means of earthing connections
    • 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
    • H01H27/06—Key inserted and then turned to effect operation of the switch

Definitions

  • the invention relates to a key switch, as is used, for example, in telephone dialing keypads to set different possible uses.
  • a switch lock which can be rotated with the aid of a key inserted through a slot in the pushbutton into different switching positions, a first contact set being set, which is arranged at the rear end of the switch lock. By pressing the button, a second set of contacts on the side of the key switch can also be operated.
  • a lock is constructed as follows: Within a lock holder, a lock body is arranged in which a lock cylinder can be rotated. Within the lock cylinder are barriers transverse to the cylinder axis Slidable elements that align with the cylinder surface when the key is inserted and otherwise protrude beyond the cylinder surface and engage in locking recesses in the lock body so that it cannot be rotated.
  • the locking recesses are lined with metallic, U-shaped reinforcing profile parts.
  • a locking disk connected to the lock cylinder in cooperation with locking springs, fixes the individual switching positions of the first contact set located at the rear end of the lock cylinder.
  • the push button protrudes through an attachment screwed to the lock holder, and when the button is pressed, the lateral second contact sets, which can be switched as earth contacts, are actuated via intermediate elements.
  • the object of the invention is to provide measures by means of which such voltage injections via the switching lock are avoided.
  • this object is achieved in that a deflector is provided in the switch lock, via which any static charges are discharged to ground when the key is inserted, without reaching the contacts connected to the voltage-sensitive circuit.
  • a solution specified in claim 1 is that the deflector plate is arranged between the lock attachment and the lock holder and runs on the one hand at a short distance or in contact with at least one of the profile parts and on the other hand at a short distance at least with a part of the key switch carrying earth potential.
  • the key When the key is inserted, its metal parts touch the likewise metallic locking elements of the lock cylinder, which in turn touch the metallic profile parts in the locking recesses.
  • the back of these profile parts are now at a short distance from parts of the baffle plate, which is either itself provided with an earth connection or with other parts so close to earthed parts of the lock that the spark gaps thus formed are considerably shorter than within the lock to those with contacts connected to the voltage-sensitive circuit are paths.
  • An electrostatic charge introduced into the lock via the key therefore flows down to earth in any case via key, locking elements, profile parts and deflector plate, without reaching the voltage-sensitive circuit. In this way, a safe protection of this circuit against high voltages is achieved.
  • the deflector plate has a cutout corresponding to the cross section of the lock body and at least one tongue to be protruded inwards through a corresponding recess in the lock body onto the rear side of the profile part.
  • the tongue can touch the profile part backwards, but a small distance is also sufficient, which is jumped over by the high voltage introduced as a spark gap.
  • the side contact sets connected as earth contacts can serve as the parts carrying earth potential and, in order to form a second spark gap, the baffle plate can expediently be provided with a shape at the location of the earth contacts, of which the A spark on the contact spring can jump over to the contact point closest to the earth contact spring.
  • a deflector can be produced easily and inexpensively by punching if the shape according to a particular embodiment of the invention has, for example, the shape of a cutout of such depth that the earth contact spring is opposite the cutout in the idle state and the edge part of the deflecting plate bridging the cutout.
  • a lock holder 1 within which a lock body 2 is arranged, which in turn encloses a lock cylinder 3.
  • a lock attachment 4 is seated on the lock holder 1 (both parts can be held together by a screw connection), and a pushbutton 5 is mounted in the lock attachment 4 and is pressed outwards by a compression spring 6.
  • a key 8 can be pushed into the lock and thus into the lock cylinder 3.
  • the key 8 has tumblers 9 for locking elements which have the shape of locking plates 10 in the plate lock shown here and are mounted in transverse slots of the lock cylinder 3.
  • tumblers 9 of the key 8 are in the correct position relative to the plate 10, the latter are aligned with the cylinder surface of the lock cylinder 3, so that it can be freely rotated in the lock.
  • tumblers correct in terms of their position not match the plates 10, then these protrude upwards or downwards over the cylinder surface of the lock cylinder into groove-shaped locking recesses 11 of the lock body, which are reinforced with U-shaped metal profile parts 11a, and block the lock cylinder against rotation.
  • a locking disc 12 which rotates together with the lock cylinder 3 and is formed with locking surfaces 13, against which locking springs 14 are applied in order to fix the various switching positions of the lock cylinder.
  • On the locking disc 12 contacts 15 of a first set of contacts are attached, which cooperate with counter-contacts 16, which in turn sit in a plate 1 a attached to the lock holder 1.
  • the key 8 is formed with a nose 8a, which lies when the key is inserted into the lock against the end face 5a of the push button 5.
  • This forms a first stop which marks the closed position of the key switch, in which the key 8 is so far in the lock cylinder 3 that the strikers 10 are brought against the pressure of their springs by the tumblers 9 of the key 8 in such a position that they aligned with the cylinder surface of the lock cylinder: Then the lock cylinder 3 can be rotated and the first set of contacts with the contacts 15 and 16 can be brought into a desired contact position.
  • the angle of rotation of the lock cylinder is limited by a locking pin 17a in connection with a circumferential recess 17 running in the circumferential direction in the lock cylinder 3, which is here in two - but possibly also more - continues axial recesses 17b, which allow an axial displacement of the lock cylinder 3 in those switching positions in which the pushbutton 5 for actuating a second or third contact set 21, 22 should be able to be pushed in (in the other switching positions, the wall of the circumferential recess 17 prevents an axial displacement of the Lock cylinder 3 and thus pushing in the push button 5) connected to the lock cylinder.
  • Fig. 2 shows that the second and third contact set is formed with internal contacts 21 and external contacts 22 which are attached to the side of the lock holder 1.
  • the inner contacts 21 can be pressed outwardly against the outer contacts 22 via intermediate members designed as sliders 23, which are located in axial grooves of the lock body 2, when the pushing button 5 presses their peripheral rim 29 against an attachment 23b of the relevant slider 23, which is then displaced in its axial groove against the force of a spring 24.
  • the deflector is shaped so that it produces a low-resistance connection between the key 8 and the contacts 21, 22 used as earth contacts in relation to the stroke distance between the key tip and the first contact set 15, 16.
  • This low-resistance overvoltage discharge path runs from the key 8 via the locking plate 10 and the profile parts 11a to the tongues 26 of the deflector plate 25, which protrude through corresponding recesses 24 in the lock body 2 onto the rear sides of the profile parts 11a.
  • the tongues 26 do not necessarily have to touch the profile parts 11 a on the rear side thereof, for assembly reasons there may be a slight distance which is easily overcome by the high voltage.
  • formations 27 in the form of cutouts are provided at the points of the deflector plate 25 adjacent to the earth contacts 21, 22 in order to guarantee free movement of the contact springs.
  • the flashover distance between the tips of the contact springs and the remaining webs 28 is sufficiently small compared to the throw distance between the key tip and the rear contact sets, so that any overvoltages are kept away from them.
  • the key touches the locking plate 10 when it is inserted into the key switch before it is inserted as far as it will go, so that the overvoltage discharge path is established before the key tip has reached its shortest distance to the rear contact sets, so that overvoltages can be derived beforehand.
  • the example of an embodiment shown in the drawings is characterized by extremely small dimensions, such as those prescribed for use with a telephone keypad.
  • the length from the end face of the pushbutton 5 to the rear end of the lock holder is only 28.5 mm, and the overall width including the second contact sets is only 18.5 mm, and the height is even smaller.
  • the deflector plate 25 can also take other forms: for example, the formations 27 are not to be designed as cutouts if sufficient freedom of movement of the earth contacts is also ensured in some other way.
  • parts of the deflector plate can be brought closer to the contact springs, for example by appropriate deformations of the deflector plate near the contact springs, for example by punched projections or tongues bent towards the contact springs, etc. It is only important that the deflector plate has a ratio to the mentioned impact distance to the rear contact sets low-resistance overvoltage path between the beard of the key 8 and parts of the switching lock that lead to ground potential, these grounding parts in the exemplary embodiment just described usually being ground contacts of the switch, but also by other parts of the switch that are at ground potential can be formed, for example if it is a key switch without a push button or earth contacts.

Landscapes

  • Push-Button Switches (AREA)
  • Tumbler Switches (AREA)
  • Lock And Its Accessories (AREA)
EP85106099A 1985-05-17 1985-05-17 Serrure-commutateur Expired EP0201620B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8585106099T DE3561779D1 (en) 1985-05-17 1985-05-17 Switch lock
EP85106099A EP0201620B1 (fr) 1985-05-17 1985-05-17 Serrure-commutateur
AT85106099T ATE32803T1 (de) 1985-05-17 1985-05-17 Schaltschloss.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85106099A EP0201620B1 (fr) 1985-05-17 1985-05-17 Serrure-commutateur

Publications (2)

Publication Number Publication Date
EP0201620A1 true EP0201620A1 (fr) 1986-11-20
EP0201620B1 EP0201620B1 (fr) 1988-03-02

Family

ID=8193507

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85106099A Expired EP0201620B1 (fr) 1985-05-17 1985-05-17 Serrure-commutateur

Country Status (3)

Country Link
EP (1) EP0201620B1 (fr)
AT (1) ATE32803T1 (fr)
DE (1) DE3561779D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102313860A (zh) * 2011-07-28 2012-01-11 山东电力集团公司淄博供电公司 笼形滚动式火花间隙测零装置
CN113990704A (zh) * 2021-11-26 2022-01-28 山东盖伊尔智能电气有限公司 一种高压开关柜接地开关挂锁装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4009357A (en) * 1975-10-01 1977-02-22 Oak Industries Inc. Anti-static keylock switch
DE3224789A1 (de) * 1982-07-02 1984-01-05 Hauck Gmbh, 8016 Feldkirchen Drucktasten-schaltschloss mit exklusiv-schaltposition

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4009357A (en) * 1975-10-01 1977-02-22 Oak Industries Inc. Anti-static keylock switch
DE3224789A1 (de) * 1982-07-02 1984-01-05 Hauck Gmbh, 8016 Feldkirchen Drucktasten-schaltschloss mit exklusiv-schaltposition

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102313860A (zh) * 2011-07-28 2012-01-11 山东电力集团公司淄博供电公司 笼形滚动式火花间隙测零装置
CN102313860B (zh) * 2011-07-28 2013-09-04 国家电网公司 笼形滚动式火花间隙测零装置
CN113990704A (zh) * 2021-11-26 2022-01-28 山东盖伊尔智能电气有限公司 一种高压开关柜接地开关挂锁装置

Also Published As

Publication number Publication date
DE3561779D1 (en) 1988-04-07
EP0201620B1 (fr) 1988-03-02
ATE32803T1 (de) 1988-03-15

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