EP0104358A1 - Boîte d'enfichage ou de couplage protégée contre les explosions - Google Patents

Boîte d'enfichage ou de couplage protégée contre les explosions Download PDF

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Publication number
EP0104358A1
EP0104358A1 EP83107474A EP83107474A EP0104358A1 EP 0104358 A1 EP0104358 A1 EP 0104358A1 EP 83107474 A EP83107474 A EP 83107474A EP 83107474 A EP83107474 A EP 83107474A EP 0104358 A1 EP0104358 A1 EP 0104358A1
Authority
EP
European Patent Office
Prior art keywords
socket
locking device
plug
locking
gear
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.)
Withdrawn
Application number
EP83107474A
Other languages
German (de)
English (en)
Inventor
Otto Steck
Manfred Leischner
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.)
R Stahl Schaltgeraete GmbH
Original Assignee
R Stahl Schaltgeraete 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 R Stahl Schaltgeraete GmbH filed Critical R Stahl Schaltgeraete GmbH
Publication of EP0104358A1 publication Critical patent/EP0104358A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/707—Structural association with built-in electrical component with built-in switch interlocked with contact members or counterpart
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/527—Flameproof cases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/64—Means for preventing incorrect coupling

Definitions

  • the invention is based on an explosion-proof socket or coupling socket with a housing in which connecting terminals, switch devices and a socket carrier having at least one socket and connected to the housing are arranged, and with a locking device which has a locking lug provided on an insertable plug Can be brought into engagement and in a first position between the locking device and the locking lug the pulling out of the plug enables, while in a second position between the locking device and the locking lug the pulling out of the plug is blocked, in the first position by the switch devices the electrical connection between the socket and the terminals are interrupted and made in the second position and the position between the locking lug and the locking device can only be changed when the plug is inserted.
  • Sdosen g for explosion-proof plug-in or Kupplun is determined by the corresponding safety regulations that an inserted into the plug or coupling socket connector can only be pulled out when the plug connection previously-energized by an integrated switch is, so that no opening sparks can occur when disconnecting.
  • This requires a forced coupling between the switch device on the one hand and a locking device on the other hand, by means of which the plug is secured against being pulled out when the voltage is switched on.
  • it must be ensured that the switch device cannot be switched on as long as the plug is not properly inserted.
  • an explosion-proof coupling connector device in which the fixedly connected to the socket carrier housing has a p plungssteckvorraum extending in the longitudinal direction of the Ku groove according to a distance from the end face of the connector in an axis extending in the circumferential direction radially groove pointing inside passes over.
  • a rotatable actuating element is arranged between the housing and the socket carrier, with which the individual explosion-proof switches provided in the coupling plug device can be actuated.
  • the plug carries a sleeve which is rotatably mounted on its housing and has an outwardly pointing nose at its front end.
  • the rotatable sleeve of the plug penetrates into a corresponding annular gap in the coupling part, the nose sliding through the longitudinal groove in the housing.
  • a securing member provided in the plug releases the rotational movement of the sleeve, so that it can be rotated on the plug or in the gap.
  • the nose on the sleeve entrained the actuator for the switches, the nose moving in the circumferential groove.
  • the nose After reaching the end position, in which the switches are switched on by the actuating element, the nose is located completely in the groove running in the circumferential direction and thus prevents the plug from being pulled out of the coupling part.
  • the plug can only be pulled out after the sleeve has been turned back into the starting position, the switches in the coupling part being switched off at the same time.
  • the individual switches for the sockets are located within the actuator and the size of the individual switches is determined by the level of the currents to be switched, the actuator and thus the plug must be relatively large in large currents or it For a given size of the actuator, the maximum current to be transmitted via the coupling plug device is relatively low.
  • the sleeve provided on the connector is relatively sensitive because of the required rotary connection.
  • the object of the invention is therefore to provide an explosion-proof socket or coupling socket which can be used for a wide range of electrical currents with the smallest possible size of the plug and in which the plug does not need to contain any moving parts.
  • the socket or coupling socket according to the invention is characterized by the features of the main claim.
  • the switch device can be arranged spatially away from the socket holder, so that large switch devices can be used for correspondingly high electrical currents, while the connector is small in size.
  • the explosion-proof socket or Ku p plungsdose with simple objects can not be outwitted because the locking device blocks the rotation of the locking device in at least one further position of the locking device, in which the locking member is practically no longer accessible by a tool. Due to the forced coupling between the switch device and the rotary movement of the locking device, switching on of the voltage is effectively prevented.
  • a very simple construction for the securing member consists in that the securing member is a slide seated in an opening of the socket carrier, which is spring-biased in the direction of the locking device and is longitudinally displaceable in the direction of the insertion movement of the plug.
  • a shoulder that projects in the direction of the locking device can be formed on the securing member.
  • a simple securing device which is very robust, is obtained if it is formed by at least one latching recess which is open towards the securing member and is formed on the locking device.
  • a side wall of the locking recess can be chamfered such that the locking device can be turned back into the first position.
  • the locking device can be effective, it is expedient if a few teeth are exposed on the first gear in the area of interaction with the second gear and the resulting gap is such that when the first gear is rotated, the lock first becomes effective by rotating the locking device and then a further rotation of the first gear engages the second gear.
  • the explosion-proof socket or socket can also be used advantageously as a socket if the housing is designed to be fastened to a wall.
  • Strength in F. 1 is an explosion-proof plug-in or K UPP lung dose in the form of a wall socket 1 illustrates having an approximately panel-like shaped housing 2, which its underside is open and there carries an opening completely covering the bottom. 3 Through a wall 4 protruding vertically upward in the rear area of the housing 2 and molded onto the floor 3, a connection space 5 is divided into the socket 1, the access opening formed in the housing 2 being closed off by a cover 6 which is secured by a screw 7 is held, which is screwed into projections formed on the bottom 3.
  • the terminal compartment 5 contains electrical terminals 8 and 9 attached to extensions of the base 3.
  • an explosion-proof rotary switch 11 fastened on a base 10 molded onto the base 3, an actuating member mounted in the top of the housing 2 in the form of a toggle button 12 and an approximately cylindrical socket carrier 13 Flange 14 is attached to the front wall 15 of the housing 2 and partially protrudes through an opening 16 in the front wall 15.
  • the longitudinal axis of the socket carrier 13 is approximately perpendicular to the front wall 15.
  • an outwardly projecting cylindrical extension 17 is integrally formed on the housing 2, in which the front section 18 of the socket carrier 13 is inserted, with the front section 18 and the cylindrical extension 17 or the opening 16 remains free a cylinder gap, which receives a front part 19 of the housing of a plug 20, which is shown in FIG. 1 inserted into the explosion-proof socket 1.
  • annular locking device 31 is rotatably mounted on a corresponding collar 30, which is illustrated in detail in FIGS. 2 to 5.
  • the locking device 31 on the collar 30 is secured against falling off by means of a thrust washer 32. slip secured, the rotatably mounted thrust washer 32 is in turn secured by a snap ring 33 inserted into a corresponding groove of the socket carrier 13 against slipping.
  • the approximately ring-shaped locking device is w bz 31 about the longitudinal axis of the socket mount. 13 about an axis parallel to the bushes 23 and 24.
  • the locking device 31 has on its outer circumference a bevel gear 35, which extends approximately over 90 ° of the circumference also extends over approximately 90 ° of the circumference and at one end merges into a locking recess 37.
  • the locking recess 37 projects radially outward beyond the recess 36, but does not extend over the full axial thickness of the locking device facility 31 in this area.
  • a wall 38 protruding at right angles is formed on one of the end faces of the locking device 31, which extends at one end to approximately the region of the latching recess 37.
  • a radially inward extension 39 is formed, which extends over the entire length of the wall 38 in the circumferential direction and does not cover a small area of the recess 36 only in the region of the latching recess 37.
  • the distance of the extension 39 from the end face of the locking device 38 is such that a locking lug 40 fits in between, which is formed on the front section 19 of the plug 20 so as to protrude radially outward.
  • the locking device 31 is placed on the collar 30 so that the extension 39 in the direction of the front wall 15 and the bevel gear 35 to the interior of the housing.
  • bevel gear 35 is a further bevel gear of a first gear 41 in connection, which is rotatably connected to the knob 12, which is rotatably mounted in the top of the housing 2, for example via a claw toothing 42 and a fastening screw 43.
  • the first gearwheel 41 is located in the interior of the housing 2, while the toggle button 12 lies on the outside of the housing and is optionally protected against mechanical damage by a cylindrical extension 44 which is formed on the housing 2 and surrounds it.
  • the first gear 41 is in Figs. 6 to 8 are shown on an enlarged scale and have two sectors 46 and 47 formed on a hub 45, which are diametrically opposed and of which the sector 46 has a spur gear 48 and the sector 47 has a bevel gear 49. 6 to 8, the first gear 41 is shown so that the two toothings 48 and 49 each have the same pitch circle diameter, but it is also possible to provide different pitch circles, depending on how large the individual gear ratios should be . As explained below, some teeth of the spur toothing 48 can be left free, so that there is a gap 50 in which the gear connection between the gear 41 and the gear 60 is interrupted.
  • the spur gear 48 meshes with a second gear 60 designed as a spur gear, which is non-rotatably coupled to the switch shaft 61 of the rotary switch 11. It can be seen that the second gear 60 only needs to be a gear segment, the arc length of which is slightly greater than the actuation angle of the rotary switch 11.
  • An extension 70 is formed on the thrust washer 32, which is secured against rotation, which extends parallel to the axis of rotation of the locking device 31 and contains an oval blind hole 71 which is too open in the direction of the locking device 31 and with its large diameter points radially outwards.
  • the large diameter of the blind hole 71 is approximately equal to the depth of the recess 37 plus the width of the recess 36.
  • the blind hole 71 is seated federvorbalastet a correspondingly shaped, stepped slide 72 (Fi q .9), which against rotation with the stepped part inserted in the blind hole 71 and the pin-shaped extension 73 protrudes through the recess 36 of the arresting 31st
  • the arrangement is such that when the connector 20 is not inserted, the shoulder 73a of the locking pin 72 is pressed into the latching recess 37 by the spring 74, the latching recess 37 preventing the slide 72 from slipping out.
  • a further catch recess 75 is formed at a distance from the catch recess 37 below the extension 36, in which the wall 76 adjacent to the catch recess 37 in the circumferential direction is chamfered, while the opposite wall 77 extends at right angles to the end face.
  • the second locking recess 75 is designed so that it can come into engagement with the shoulder 73a and prevents further rotation of the locking device 31 by means of the right-angled wall 77, while turning back in the direction of the locking recess 37 due to the bevelled design of the wall 76 is possible.
  • the switching contacts of the rotary switch 11 are open and interrupt the electrical connection between the sockets 23, 24 and the connecting terminals 8, 9.
  • the locking device 31 is in this state in the first position, in which the slider 72 due to the spring 74th with its shoulder 73a in the recess 37 ge is pressed and a rotation of the locking device 31 blocks, while the extension 39 formed on the locking device 31 releases the possible insertion of the connector 20 provided with the locking lug 40.
  • the nose 40 formed on the front cylindrical section which is pushed through a corresponding longitudinal groove of the cylindrical extension 17 and passed laterally next to the extension 39, serves as a securing member for the locking device 31 Slide 72 against the force of the spring 74, so that its shoulder 73a comes out of the locking recess 37 and no longer blocks the rotation of the locking device 31.
  • the user can now turn the toggle button 12, whereby - due to the gear coupling between the first gear 41, the ring gear 49 and the ring gear 35, the locking device 31 is rotated and the extension 39 slides over the locking lug 40, so that the plug is pulled out 20 from the explosion-proof socket 1 is blocked.
  • the gear 60 of the rotary switch 11 is rotated by the gear coupling of the toggle button 12 via the first gear 41. If the toggle button 12 is turned sufficiently, the rotary switch 11 finally switches the electrical connection between the sockets 23, 24 and the terminals 8, 9; the locking device 31 is thus in the second position. During the entire rotary movement there is always a corresponding area of the extension 39 above the locking lug 40 and makes it impossible to pull the plug 20 out.
  • the toggle button 12 In order to be able to pull out the plug 20, the toggle button 12 must be turned back against the previous direction of rotation, whereby the switch 11 is switched to the OFF position and the locking device 31 is turned back to the first position. Only when the toggle button 12 is turned back into its starting position and the latching recess 37 is opposite the slide 72, does the extension 39 release the locking lug 40, with which the plug 20 can be pulled out.
  • the second latching recess becomes 75 effective.
  • the extension 73 of the slider 72 can only be pressed down by a simple tool until the rotation of the locking device 31 causes the extension 39 to come over the slide 72 and covers the extension 73.
  • the teeth of the face teeth 48 can be exposed in the area of the first position of the toggle button 12, so that there is a gap 50 and the gear connection between the rotary switch 11 and the toggle button 12 is interrupted in this position or they may be present, with which the rotary switch 11 is then geared to the knob button 12 in this position.
  • the plug 20 matching the socket 1 differs from a non-explosion-protected plug according to the CEE standard essentially by the lower height of the locking lug 40 measured in the axial direction of the plug 20, an additional securing device can be provided on the socket 1 prevents the insertion of an improperly modified plug according to the CEE standard. If the locking lug 40 were to be shortened in the axial direction, one could do so.
  • manipulated plug 20 are inserted into the socket 1 and the slide 72 are operated in the sense of a release of the locking device 31.
  • a socket 80 which is coaxial with this, is formed on the socket carrier 13 and protrudes on the outwardly facing end face of the socket carrier 13, as illustrated in FIG. 10.
  • the cylindrical extension 80 plunges into a corresponding blind hole 81 in the plug 20. If, on the other hand, an inadmissibly modified plug according to the CEE standard was inserted into socket 1, its forehead would become stand up on the cylindrical continuation 80 and the locking lug 40 would consequently not push the slide 72 far enough in the sense of releasing the locking device 31. Otherwise, the socket carrier 13 and the other components connected to it do not differ from those already described with reference to FIG. 1, which are also provided with the same reference numerals. as in Fig. 10.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
EP83107474A 1982-09-08 1983-07-29 Boîte d'enfichage ou de couplage protégée contre les explosions Withdrawn EP0104358A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3233325A DE3233325C2 (de) 1982-09-08 1982-09-08 Explosionsgeschützter Steckverbinder
DE3233325 1982-09-08

Publications (1)

Publication Number Publication Date
EP0104358A1 true EP0104358A1 (fr) 1984-04-04

Family

ID=6172720

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83107474A Withdrawn EP0104358A1 (fr) 1982-09-08 1983-07-29 Boîte d'enfichage ou de couplage protégée contre les explosions

Country Status (3)

Country Link
EP (1) EP0104358A1 (fr)
JP (1) JPS5966074A (fr)
DE (1) DE3233325C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2273401A (en) * 1992-11-25 1994-06-15 Tokai Rika Co Ltd Switch with connector
EP0632540A2 (fr) * 1993-07-02 1995-01-04 Hubbell Incorporated Prise à interrupteur de sécurité avec face frontale non accessible

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3513591A1 (de) * 1985-04-16 1986-10-16 Aloys Mennekes Anlagengesellschaft, 5942 Kirchhundem Schutzkontaktsteckdose
DE10047854A1 (de) * 2000-09-27 2002-04-25 Stahl R Schaltgeraete Gmbh Kompakte explosionsgeschützte Steckvorrichtung
DE10210635B4 (de) * 2002-03-11 2005-06-16 R. Stahl Schaltgeräte GmbH Explosionsgeschütztes Gehäuse mit modularem Vorsatzgehäuse
DE102020100655A1 (de) * 2020-01-14 2021-07-15 Eaton Intelligent Power Limited Elektrische Steckdose und Schalter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR751671A (fr) * 1933-02-27 1933-09-07 Prise de courant de sécurité pour machines électriques antidéfiagrantes
DE660190C (de) * 1936-07-23 1938-05-18 Friemann & Wolf G M B H Sicherheitssteckvorrichtung mit gegenseitiger Verriegelung zwischen einem von Hand zu bedienenden Schalter und dem Stecker
DE697385C (de) * 1936-01-07 1940-10-12 Friemann & Wolf G M B H Sicherheitssteckvorrichtung mit Drehschalter
DE2342805A1 (de) * 1973-08-24 1975-03-06 Aloys Mennekes Elektrotechn Kraftsteckdose mit schalter und verriegelungsmechanismus
FR2253292A1 (en) * 1973-11-30 1975-06-27 Bbc Brown Boveri & Cie Explosion proof coupling plug - nose moves contact switch by external ring movement in coupled state

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE641219C (de) * 1934-01-14 1937-01-25 Siemens Schuckertwerke Akt Ges Steckvorrichtung mit einer Isolierscheibe, die sich beim Herausziehen des Steckers vor die spannungfuehrenden Steckerhuelsen bewegt
DE851373C (de) * 1941-05-30 1952-10-02 Busch Jaeger Luedenscheider Me Steckvorrichtung, bei der der mit bajonettartigen Vorspruengen versehene Stecker durch einen Bajonettueberwurfring der Steck-dose in dieser gehalten wird
DE1985041U (de) * 1965-03-16 1968-05-09 Elektrotechnische Appbau Ansta Elektrische steckvorrichtung mit verriegelbarem schalter.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR751671A (fr) * 1933-02-27 1933-09-07 Prise de courant de sécurité pour machines électriques antidéfiagrantes
DE697385C (de) * 1936-01-07 1940-10-12 Friemann & Wolf G M B H Sicherheitssteckvorrichtung mit Drehschalter
DE660190C (de) * 1936-07-23 1938-05-18 Friemann & Wolf G M B H Sicherheitssteckvorrichtung mit gegenseitiger Verriegelung zwischen einem von Hand zu bedienenden Schalter und dem Stecker
DE2342805A1 (de) * 1973-08-24 1975-03-06 Aloys Mennekes Elektrotechn Kraftsteckdose mit schalter und verriegelungsmechanismus
FR2253292A1 (en) * 1973-11-30 1975-06-27 Bbc Brown Boveri & Cie Explosion proof coupling plug - nose moves contact switch by external ring movement in coupled state

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2273401A (en) * 1992-11-25 1994-06-15 Tokai Rika Co Ltd Switch with connector
US5434375A (en) * 1992-11-25 1995-07-18 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Switch with connector
GB2273401B (en) * 1992-11-25 1996-03-27 Tokai Rika Co Ltd Switch with connector
EP0632540A2 (fr) * 1993-07-02 1995-01-04 Hubbell Incorporated Prise à interrupteur de sécurité avec face frontale non accessible
EP0632540A3 (fr) * 1993-07-02 1996-07-24 Hubbell Inc Prise à interrupteur de sécurité avec face frontale non accessible.

Also Published As

Publication number Publication date
JPS5966074A (ja) 1984-04-14
DE3233325A1 (de) 1984-03-08
DE3233325C2 (de) 1991-01-24

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): FR GB IT

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19841205

RIN1 Information on inventor provided before grant (corrected)

Inventor name: STECK, OTTO

Inventor name: LEISCHNER, MANFRED