EP0428936A1 - Prise de securité pour enfants - Google Patents

Prise de securité pour enfants Download PDF

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Publication number
EP0428936A1
EP0428936A1 EP90121289A EP90121289A EP0428936A1 EP 0428936 A1 EP0428936 A1 EP 0428936A1 EP 90121289 A EP90121289 A EP 90121289A EP 90121289 A EP90121289 A EP 90121289A EP 0428936 A1 EP0428936 A1 EP 0428936A1
Authority
EP
European Patent Office
Prior art keywords
housing part
disc
openings
disk
lock 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.)
Withdrawn
Application number
EP90121289A
Other languages
German (de)
English (en)
Inventor
Raimund Hofmann
Jörg Hofmann
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0428936A1 publication Critical patent/EP0428936A1/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Withdrawn legal-status Critical Current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
    • H01R13/44—Means for preventing access to live contacts
    • H01R13/447—Shutter or cover plate
    • H01R13/453—Shutter or cover plate opened by engagement of counterpart
    • H01R13/4532—Rotating shutter

Definitions

  • the invention relates to a child safety device for sockets according to the preamble of patent claim 1.
  • a child lock according to the preamble of the claim is known from DE-GM 85 19 135.
  • This child safety device consists of an upper housing part and a lower housing part, which sandwich a disk rotatably arranged between the latter.
  • the disc consists of an essentially annular element with a spring which is formed lying in a central opening and merges with its two ends into the annular element.
  • the upper housing part is provided with a slotted pin which engages over the spring and the The disk can be returned to a position covering the contact openings in the lower part of the housing.
  • the rotational movement of the plug with its contact pins is limited in that the upper housing part is provided with arcuate cutouts which allow the plug to be rotated into such an end position that after the contact pins have been penetrated through corresponding contact pin openings in the rotatable disk, the contact pins can be inserted into the socket .
  • the disadvantage of this child safety device is that it consists of a plurality of parts. The upper and lower parts of the housing, including the rotatable disc, are installed by means of a pin hole formation along the edge of the housing parts.
  • the invention has for its object to provide a child lock of the type mentioned in such a way that it has a simple structure and is easy to install.
  • the child lock according to the invention advantageously consists of only two parts.
  • a housing part has a spring device and a bearing journal on which a disc can be rotatably attached.
  • the housing part with bearing pin and spring device can be injection molded from plastic in one operation.
  • the spring device preferably consists of at least two spring arms integrally formed on the housing part, which point in the direction of the center of the housing part, so that the center end of the spring arms can be moved in a plane parallel to the housing part and by means of a pin projecting from the disk is acted upon.
  • the housing part is provided with an arcuate, recessed guide for the plug contact pins, each of which merges into an opening through which a contact pin can be displaced into the associated contact of the socket.
  • the rotation of the disk is limited to a predetermined angle in that arc-shaped grooves are formed in the disk, into which limiting pins of the housing part engage.
  • the bearing pin of the housing part has an outwardly projecting edge or collar.
  • the bearing journal When viewed from above, the bearing journal preferably has an essentially elliptical design, as a result of which the disk can be put on quickly and easily.
  • the collar of the bearing pin reaches over the inserted washer and holds the washer securely against the housing part.
  • the opening of the disk assigned to the bearing journal is formed by an elongated hole or an oval hole, so that an eccentric movement of the disk can be carried out with respect to the cylindrical bearing wall of the journal and thereby locking teeth formed on the disk on the one hand and on the housing part on the other hand in the case of an eccentric displacement of the disk, its rotation is prevented at least in the direction that would lead to a congruent position of the openings in the disk and the openings in the housing part.
  • 1 and 2 show one of the two parts of the child safety device, namely a housing part 1, which consists of an essentially circular base part 2 and a housing edge 3 which surrounds the base part 2 circumferentially.
  • the thickness of the base part 2, as shown in FIG. 2 is smaller and preferably about half as large as the thickness of the housing edge 3, as a result of which a space 6 is defined above the base part 2 for the use of a second part which forms the child safety device, namely a pane 4, as will be explained in connection with FIGS. 3 and 4.
  • the disc 4 has a thickness that corresponds approximately to that of the base part 2, so that the disc 4 comes to lie within the space 6 defined by the housing edge 3 of the housing part 1.
  • the shape of the housing edge 3 corresponds to the shape of conventional sockets, ie the housing edge 3 has lateral flats 3a, 3b and mutually opposite recesses 3c, 3d, the recesses 3c, 3d being provided for carrying out the protective contacts of a socket.
  • the area defined by the housing edge 3 and designated 6 has essentially the shape of a short cylinder into which, according to a preferred embodiment, protruding teeth 8 protrude into the center of the housing part 1.
  • the diameter of the cylindrical space 6 is slightly larger than the diameter of the disk 4.
  • the housing part 1 has a bearing pin 10 projecting centrally from the base part 2, which has a cylindrical or circular cross section at its end facing away from the base part 2 and is provided with an outwardly directed, at least partially circumferential collar or flange 12.
  • This collar or flange 12 as shown in FIG. 1, has the shape of an oval or an ellipse.
  • the shape of the collar 12 preferably coincides with the shape of the elongated hole in the disk 4, which is designated by 14 in FIG. 3.
  • the flange 12 can be replaced by two segment-shaped sections 12a, 12b, as is indicated by the broken line in FIG. 1.
  • recesses 16, 17 are defined in such a way that in the plane of the base part 2 and within the recesses 16, 17 spring arms 18, 19 are fixed in the course of the injection molding process, with their one end lying on the housing edge 3 in the Transition part of the housing or into the housing edge 3, while the other end, designated 18a or 19a, is freely movable within the recess 16 or 17.
  • the spring arms 18, 19 are preferably curved and fulfill the function of prestressing the disk 4 to be described in a predetermined position.
  • two circular openings 20, 21 are formed, which serve to lead the contact pins of the plug into the contacts of the socket.
  • the ends 22a, 23a of the arc-shaped guide sections remote from the openings 20, 21 are acted upon by the contact pins of the plug inserted via the child lock in the locked position of the child lock and guide the contact pins of the plug in FIG. 1 clockwise when the plug is together with the disc 4 is rotated so far that the contact pins of the plug can be moved through the openings 20, 21 into the socket.
  • the guides 22, 23 have a width which corresponds approximately to the width of the contact pin ends.
  • at least one limiting pin 28 preferably projects from the base part 2.
  • another such pin can be provided lying diametrically to the bearing pin 10.
  • the disk 4 cooperating with the housing part 1 has a central opening 14, preferably in the form of an elongated hole, the shape of the opening 14 corresponding to the outline or the envelope of the collar 12 of the bearing pin 10.
  • the disk 4 contains openings 30, 31 which, like the openings 20, 21, are preferably circular and have a diameter which is slightly larger than the diameter of the plug contact pins.
  • the circumference of the disk 4 is provided with locking teeth 32, each of which is followed by a recess 33. The edge of the disc 4 gradually increases from each recess 33 to a target disc diameter which is reached at the tips of the respective teeth 32.
  • the disk 4 is provided with at least one, preferably a plurality of arcuate grooves 35, 36, which are diametrically opposed to one another and lie on a radius which corresponds to the radius of the pin 28 starting from the center of the bearing pin 10.
  • the disc 4 is further provided with pins, pins 38, 39 or the like, which protrude from the disc 4 in the direction of the base part 2 and are brought into engagement with one of the ends 18a, 19a of the spring arms 18, 19.
  • a spring force is exerted by the spring arms 18, 19 on the disc 4 by means of the pins 38, 39 formed thereon, in such a way that the disc 4 is biased into a position in which the openings 30, 31 are not in register with the Openings 20, 21 of the housing part 1, but come to lie over the guide groove ends 22a, 23a.
  • Such an advantageous limitation of the rotary movement of the disk can also be achieved by other means or, if necessary, omitted, since e.g. the cutouts 16, 17, together with the spring device 18, 19, can limit the rotation of the disk.
  • the axis of the elongated hole 14 is perpendicular to the connecting line of the two openings 30, 31 of the disk 4. That axis which is defined by the shape of the collar 12 and is shown in broken lines in FIG. 1 and designated 41 is at an angle of, for example, 45 ° to the connecting line between the two openings 20, 21 of the housing part 1. In this way, after inserting the washer 4 on the bearing pin 10, it is ensured that the washer 4 is held by the collar 12 or collar segment cuts 12a, 12b of the bearing pin 10 on the housing part 1 and cannot inadvertently jump away from the housing part 1.
  • the pins 38, 39 come into contact approximately contact with the spring arms 18, 19 and tension the disc 4 in a counterclockwise direction in Fig. 1 in such a way that the openings 30, 31 come to lie approximately above the guide end portions 22a, 23a.
  • the plug with the contact pins is inserted into the openings 30, 31 of the disk 4, the plug is to be turned clockwise against the spring force exerted by the spring arms 18, 19 until the openings 30, 31 come into line with the Openings 20, 21 of the housing part 1. Thereupon the plug with its contact pins can be displaced through the openings 20, 21 to the socket contacts, not shown.
  • the washer 4 is automatically turned counterclockwise by spring action into the starting position, so that the openings 20, 21 in the housing part 1 are covered or closed by the washer 4.
  • the pins 28 have a length which is less than the thickness of the disk 4, so that the groove 35 represents an arcuate depression in the disk 4.
  • the groove 35 can also be designed as an arcuate slot in the disk 4, it being possible for the embodiment or the pins 28 to have approximately the thickness of the disk in such an embodiment.
  • the recesses 16 receive the pins 38, 39 after the installation of the disk 4.
  • the size or shape of the recess 16 is to be selected such that an arc is defined with a radius which corresponds to the required rotational movement of the pins 38, 39 and ensures the rotation of the disk 4 between its two end positions.
  • the disc 4 When the disc 4 is attached to the bearing pin 12, the disc 4 must be brought to bear on its center under the collars 12 and 12a, 12b of the bearing pin 10 while overcoming a back pressure due to the contact between the pins 38, 39 and the base part 2 and the contact between the pin or pins 28 with the surface of the disk 4. After a slight rotation of the disk 4th get the pin 38, 39 in the recess 16, 17 and the pin or pins 28 in the guide grooves 35, 38, whereupon the disc 4 is rotated with its slot 14 such that the shape of the slot 14 does not coincide with the shape of the Collar 12. As a result, the washer 4 is held by the collar 12 on the housing part 1.
  • the elongated hole 14 in connection with the bearing pin 10 fulfills the purpose that the disc 4 is not rotated clockwise in the event of actuation with a pointed object or the like, but is shifted eccentrically and thereby the teeth 32 of the disc 4 come into engagement with the Teeth 8 of the housing part 1. This prevents further rotation of the disk 4 clockwise in a direction in which the openings 30, 31 can coincide with the openings 20, 21.
  • collar segments 12a, 12b are provided instead of a full circumferential collar 12.
  • the collar segments 12a, 12b each extend over an arc of preferably 90 ° and are provided lying diametrically to the center of the base part 2 on the longitudinal axis, which is defined by the envelope of the collar segments 12a, 12b or the collar 12.
  • the base part 2 is not an additional part to the usual socket, but rather forms the bottom of the socket housing facing outwards.
  • the bearing journal 10 protrudes from the socket bottom and the triangular openings 16, 17 with the spring arms 18, 19 are provided integrated in the socket bottom.
  • the openings 16, 17 are covered by a rear pane or the like. The rest of the structure and function correspond to the description above.
  • the invention creates a child lock that consists of only two Sharing.
  • the child safety device has an extremely flat structure, but only requires a single housing part 1 for receiving the disk 4.
  • the disk 4 is held by the bearing pin 10, which has the collar 12 at its free end, which is formed by flange-like sections, which in one level parallel to base part 2.
  • the spring arms 18, 19 have such a spring force that they can bias the disc 4 into a locked position with respect to the openings 20, 21.
  • the spring arms 18, 19 are integral components of the housing part 1.
  • the overall height of the child safety device is reduced to a minimum, since they cooperate with the spring arms 18, 19 Pins 38, 39 lie within the cutouts 16, 17, that is to say in the plane of the base part 2.
  • an adhesive strip or similar means can be provided on the rear wall of the housing part 1, whereby the housing part 1 is fixed within the socket opening.
  • 3 means can be provided on the edge of the housing, which ensure that the child safety device is firmly installed within the opening of the plug.
  • FIGS. 5 to 8 A modified embodiment of the child safety device is explained with reference to FIGS. 5 to 8.
  • the main difference between this child safety device and the embodiment according to FIGS. 1 to 4 is that a Z-shaped steel spring is used as the spring element, as shown in FIG. 5. This spring is labeled 50.
  • a Z-shaped steel spring is used as the spring element, as shown in FIG. 5.
  • This spring is labeled 50.
  • the housing part 1 has a collar which can be seen in FIG. 3 shaped edge 3, which is offset from the base part 2 and carries inwardly projecting, circumferentially extending locking teeth 8.
  • stops 28a, 28b are provided, which either have a short length according to FIG. 5 and run in an arc to the center of the housing part 1 or are formed by a circular or triangular stop.
  • the stop 28a, 28b is preferably provided directly next to the openings 20, 21 and preferably has a beveled surface, as shown in FIG. 6, in such a way that the height of the stop 28a, 28b increases clockwise from the openings 20 and 21, respectively.
  • the bearing pin 10 is provided with a slot 51 which has such a width that the spring 50 can be inserted into this slot 51.
  • the angle of this slot 51 with respect to the line 41 is selected such that the spring 50 used can be inserted against the stops 28a, 28b under pretension.
  • this angle of the slot 51 is less than 90 ° and is about 70 in relation to the line 41.
  • each have a free end of the spring 50.
  • the base part 2 is provided with preferably curved guide elements 52a, 52b, which are used to guide a leg part extending from the free end of each spring in the direction of the spring center, namely the leg part that is between the free end and one of bends 50a, 50b.
  • the guide elements 52a, 52b run over an arc of 90 ° or approximately 90 °, as shown in FIG. 5, and are on the front and formed below the flanges 12a, 12b on the base part 2 projecting upwards therefrom.
  • the disk 4 assigned to the housing part 1 is illustrated in FIGS. 7 and 8.
  • the top view according to FIG. 7 shows the outwardly facing surface of the pane 4, the parts of the pane 4 facing the base part 1 being shown in broken lines.
  • the disk 4 similar to the housing part 1 and deviating from the embodiment according to FIG. 3, has a circumferential edge or collar 60 which protrudes beyond the teeth 32 and thus covers the teeth from above according to FIG. 7.
  • the teeth 32 are formed according to FIG. 8 on the outside of a circular ring 62, in the area of which the disk 4 has its greatest strength and from which two stop elements 38, 39 strive inwards.
  • the stop elements 38, 39 are preferably not formed by pegs, but rather by webs which point from the ring gear 62 essentially straight in the direction of the elongated hole 14.
  • the disk 4 according to FIG. 7 is illustrated in the rotational position which it assumes when it is already functionally inserted in the housing part 1 (FIG. 5) and assumes its starting position in which the openings 20, 21 are closed by the disk 4 , before the disc 4 is rotated clockwise by about 70 ° with the connector pins until the openings 30, 31 of the disc come into congruence with the openings 20, 21 of the housing part 1.
  • the stop elements 38, 39 engage between the stop elements 28a and 28b and the free end of the spring 50, ie the free ends of the spring 50 are in the starting position the disc 4 on the stop elements 38, 39, specifically on the surfaces of the stop elements 38, 39 designated 38a, 39a and press these stop elements 38, 39 counterclockwise in the direction of the stop elements 28a, 28b.
  • these are chamfered at the end facing the elongated hole 4, as illustrated in FIG. 7.
  • the stop elements 38, 39 are preferably designed in such a way that they are slightly offset counterclockwise to the interface between the axis 64 and the ring 62 on the ring 62 and preferably an angle with respect to the axis 64 of about 45 °.
  • the spring 50 and the stop elements 38, 39 interact optimally.
  • an arcuate configuration of the stop elements 38, 39 instead of the essentially straight stop elements is also possible.
  • the disc 4 is placed on the housing part 1 in that the elongated hole 14 is brought into alignment with the flanges 12a, 12b, then a pressure is exerted on the disc 4, during which Placing the disc 4 for connection to the housing part 1, in contrast to the rotational position according to FIG. 7 and in comparison to FIG. 5, the disc has to assume a position which corresponds to a position rotated approximately 90 ° clockwise. After pressing the washer 4 onto the housing part 1 according to FIG. 5 and with a position such that it is rotated clockwise about 90 ° with respect to FIG.
  • the stop elements 38, 39 are - viewed clockwise - in the third or first sector of the housing part, after which the disk is rotated clockwise through more than 90 ° until the stop elements 39 and 38 are moved over the obliquely increasing surface of the stop elements 28a, 28b and get between the stop elements 28a and 28b and the free ends of the spring 50.
  • the disc regions adjacent to the elongated hole 14 are brought under the flange sections 12b and 12a, respectively, so that the disc 4 is held below the flanges 12a, 12b in the process of further rotation of the disc 4 described below.
  • the stopping position of the child safety device is reached, from which the disc can be rotated clockwise through an angle of approximately 70 ° such that the openings 20 and 30 biv. 21 and 32 take cover with each other.
  • the function of the child lock according to FIGS. 5 to 8 is the same as that described in connection with the embodiment according to FIGS. 1 to 4.
  • the edge 60 of the disk 4 which projects beyond the rim 62 has a radius which is the same or slightly larger than the inner radius of the housing part 1, based on the radius from which the teeth 8 project inwards.
  • the flanges 12a, 12b in the embodiment according to FIG. 5 are oriented approximately as described in connection with FIG. 1 with reference to the line 41, the angle of the line 41 with respect to that through the middle of the two Openings 20, 21 leading line in the embodiment according to FIGS. 5 to 8 is between 30th and 40th.
  • the axis 64 is preferably at an angle of approximately 35 ° to a line which is drawn through the centers of the two openings 30, 31.
  • the child lock described in connection with FIGS. 5 to 8 advantageously consists of a total of three parts, namely the housing part 1, a preferably S-shaped metal spring 50 and the washer 4.
  • the housing part 1 a preferably S-shaped metal spring 50 and the washer 4.
  • assembly of these parts is extremely simple and can be accomplished within a few seconds.
  • the child safety device described with reference to FIGS. 5 to 8 has the advantage that it is formed from two extremely easy-to-produce plastic parts, namely the base part 1 and the washer 4, and a third metal spring element.
  • the use of the metal spring element has the advantage that, compared to a spring element made of plastic, practically no breakage or material fatigue is to be expected, and in this embodiment the spring is worked out relative to the remaining plastic element

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  • Pivots And Pivotal Connections (AREA)
  • Buckles (AREA)
EP90121289A 1989-11-15 1990-11-07 Prise de securité pour enfants Withdrawn EP0428936A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3938004 1989-11-15
DE3938004 1989-11-15
DE4003130 1990-02-02
DE19904003130 DE4003130A1 (de) 1989-11-15 1990-02-02 Kindersicherung fuer steckdosen

Publications (1)

Publication Number Publication Date
EP0428936A1 true EP0428936A1 (fr) 1991-05-29

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ID=25887108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90121289A Withdrawn EP0428936A1 (fr) 1989-11-15 1990-11-07 Prise de securité pour enfants

Country Status (2)

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EP (1) EP0428936A1 (fr)
DE (1) DE4003130A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023078554A1 (fr) * 2021-11-04 2023-05-11 Flurysar Gmbh Couvercle de sécurité pour prise électrique
CN117767203A (zh) * 2024-02-22 2024-03-26 国网山东省电力公司东营市河口区供电公司 一种电力线缆安全挂钩组件

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10202341C1 (de) * 2002-01-23 2003-04-24 Abb Patent Gmbh Berührungsschutzvorrichtung für eine Schutzkontakt-Steckdose mit federbelastetem Drehschieber
DE10225564C1 (de) * 2002-06-10 2003-11-06 Abb Patent Gmbh Steckdoseneinsatz einer Steckdose mit in einer Berührungsschutzvorrichtung geführtem Drehschieber

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2461377A1 (fr) * 1979-07-11 1981-01-30 Avice Pierre Adaptateur et prise de courant de securite comportant cet adaptateur
DE8519135U1 (de) * 1985-07-02 1985-11-07 Isotronic Dieter Mezger, 7000 Stuttgart Kindersicherung für Steckdosen
DE8715967U1 (fr) * 1987-06-03 1988-02-25 Napierski, Reinhard, 6361 Niddatal, De

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2461377A1 (fr) * 1979-07-11 1981-01-30 Avice Pierre Adaptateur et prise de courant de securite comportant cet adaptateur
DE8519135U1 (de) * 1985-07-02 1985-11-07 Isotronic Dieter Mezger, 7000 Stuttgart Kindersicherung für Steckdosen
DE8715967U1 (fr) * 1987-06-03 1988-02-25 Napierski, Reinhard, 6361 Niddatal, De

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023078554A1 (fr) * 2021-11-04 2023-05-11 Flurysar Gmbh Couvercle de sécurité pour prise électrique
CN117767203A (zh) * 2024-02-22 2024-03-26 国网山东省电力公司东营市河口区供电公司 一种电力线缆安全挂钩组件
CN117767203B (zh) * 2024-02-22 2024-04-30 国网山东省电力公司东营市河口区供电公司 一种电力线缆安全挂钩组件

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Publication number Publication date
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