EP4060824A1 - Connecteur enfichable pour conduites électriques - Google Patents

Connecteur enfichable pour conduites électriques Download PDF

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Publication number
EP4060824A1
EP4060824A1 EP21162841.7A EP21162841A EP4060824A1 EP 4060824 A1 EP4060824 A1 EP 4060824A1 EP 21162841 A EP21162841 A EP 21162841A EP 4060824 A1 EP4060824 A1 EP 4060824A1
Authority
EP
European Patent Office
Prior art keywords
receiving body
connector
sealing
held
sealing ring
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.)
Pending
Application number
EP21162841.7A
Other languages
German (de)
English (en)
Inventor
Valerij Charcenko
Joachim Strobel
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.)
Lapp Engineering AG
Original Assignee
Lapp Engineering AG
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 Lapp Engineering AG filed Critical Lapp Engineering AG
Priority to EP21162841.7A priority Critical patent/EP4060824A1/fr
Publication of EP4060824A1 publication Critical patent/EP4060824A1/fr
Pending 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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/622—Screw-ring or screw-casing
    • 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
    • H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/28—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/86—Parallel contacts arranged about a common axis

Definitions

  • the present invention relates to an electrical connector with two connector parts that can be connected to one another for use in hygienically demanding environments.
  • EHEDG European Hygienic Engineering and Design Group
  • a connector for use in hygienically demanding environments is, for example, from the DE202010005055U1 known.
  • This connector comprises a first sleeve for receiving a first connector part, a second sleeve for receiving a second connector part, connecting means for connecting the first sleeve to the second sleeve, and a seal for sealing a transition between the first sleeve and the second sleeve.
  • the shape of the seal and the geometry of a mount for the seal are matched to one another in such a way that the seal is positioned compressed between the first sleeve and the second sleeve in the assembled state and between the first sleeve and the seal on the one hand and the seal and the second sleeve on the other gap-free transitions are formed.
  • the connector described has various disadvantages.
  • a compressed between two connector parts Sealing ring is regularly exposed to high stress and can therefore lose the required sealing properties.
  • the connecting device is designed in the manner of a bayonet lock which, after being opened and closed several times, can show signs of wear which call into question an optimal lock.
  • this type of connection device it is essential that the sealing ring has precisely the required dimensions so that it is sufficiently compressed.
  • Another disadvantage is that the elements of the connecting device are not easily accessible and cannot be easily cleaned.
  • the connector has several connecting contacts, it is often not possible to correctly connect the two connector parts to one another right away. This is particularly problematic when the connector parts are to be connected to one another under unfavorable lighting conditions or under otherwise difficult conditions.
  • the handling of the sealing ring, which is inserted between the connector parts, can also cause difficulties under certain circumstances.
  • the sealing ring can fall down and become contaminated if the connector parts are handled clumsily.
  • the design of the connecting device in the manner of a bayonet lock also has the disadvantage that the mutually corresponding connecting elements must first be correctly aligned with one another before a mutual intervention can be effected.
  • the connector parts may be turned against each other several times until the engagement is found.
  • point connections result, which promote misalignment of the connector parts and uneven loads on the sealing element.
  • the present invention is therefore based on the object of creating an improved electrical connector with two connector parts that can be connected to one another for use in hygienically demanding environments.
  • the connector should be able to meet the requirements of the EHEDG guidelines and have the smallest possible dimensions.
  • the connector parts, a plug and a socket should be able to be connected to one another in a simple manner, resulting in a tightly sealing connection between the connector parts. After connecting the connector parts, there should be no gaps or openings through which microorganisms can penetrate into the connector.
  • the handling of the connector should be simplified so that a connection of the connector parts succeeds right away even under unfavorable conditions. This should result in an even and stable connection, which keeps the connector parts in a coaxial alignment and ensures an optimal effect of the sealing elements.
  • the connector should be able to be thoroughly cleaned in a simple manner. Impurities should be kept away from the plug contacts. Creepage distances for contamination should be as large as possible.
  • the sealed connection between the connector parts should also be maintained when forces are applied to the connector remain guaranteed. Furthermore, the sealing elements used should not be damaged when forces act on the connector.
  • the plug connector is intended for use in hygienically demanding environments and comprises a first plug connector part with a first receiving body in which at least one first plug contact is held; a second connector part with a second receiving body, in which at least one second plug contact is held, which corresponds to the first plug contact; connecting means for connecting the first receiving body and the second receiving body in coaxial alignment with each other; and at least one seal for sealing the transition between the first receptacle body and the second receptacle body.
  • the connecting device comprises a connecting tube into which the mutually facing front pieces of the first and second connector parts can be inserted; a first connecting means, by means of which the connecting tube is connected or can be connected to the first receiving body; a second connecting means, by means of which the connecting pipe is connected or can be connected to the second receiving body; a first sealing ring, by means of which the transition between the connecting tube and the first receiving body is sealed or is sealable; and a second sealing ring, by means of which the transition between the connecting pipe and the second receiving body is sealed or can be sealed.
  • the connecting tube covers the connected front pieces of the connector parts, a plug and a socket, and keeps them free from external influences. Impurities are therefore deposited on the outer surface of the connecting tube and can be easily cleaned. The contamination that occurs is kept far away from the plug contacts, so that contamination in the critical area of the plug contacts is avoided.
  • the connecting tube covers and protects critical areas such as threads and the front pieces of the connector parts with the contacts used.
  • the first connecting means is an internal thread on a first end piece of the connecting tube, which can be connected to a first external thread provided on an end piece of the first receiving body facing the connecting device, and that the second connecting means is a snap ring , On the one hand in an inner groove on a second end of the connecting tube and on the other hand in an outer groove on one of the Connection device facing end piece of the second receiving body is provided, is held.
  • connection pipe is therefore rotatably held by one of the connector parts and can be easily connected to the other connector part by rotating.
  • the connecting tube is or can be connected in a tightly sealing manner by sealing rings with sealing surfaces on the outer surfaces of the first and second receiving body.
  • the sealing surfaces run annularly on the outside of the receiving tubes and are preferably inclined in such a way that the outside diameter of the receiving tubes decreases perpendicularly to the sealing surface towards the connecting tube or increases in the other direction.
  • the result is a ramp-shaped ring, which radially outwardly displaces and compresses the associated sealing ring, which is displaced axially when the connecting tube is tightened.
  • the sealing rings are thus deformed in two directions when the connecting pipe is tightened. On the one hand, there is a compressive force parallel to the longitudinal axis of the connector. On the other hand, there is a compressive force perpendicular to the longitudinal axis of the connector.
  • the space inside the connecting tube is therefore tightly sealed by the two sealing rings.
  • the connector with the two interconnected connector parts can therefore be easily cleaned. After detaching the connector parts, the sealing surfaces are exposed and can be thoroughly cleaned in a simple manner.
  • a particularly good seal is achieved when using sealing rings that have a flat inner surface that is broadly attached to the sealing surface on the outside of the associated receiving tube. This not only results in a good seal, but also, due to the wide-area contact, a reduction in the maximum forces acting on the sealing rings, which is why signs of wear on the sealing rings are largely avoided.
  • the sealing rings preferably have inner surfaces which are at least approximately conical or cylindrical with respect to their axis of rotation.
  • the sealing rings preferably have a polygonal or rectangular cross-section.
  • the connecting tube has a first sealing groove on the inside of the end piece facing the first receiving body, in which the first sealing ring is held, and that the connecting tube has a second sealing groove on the inside of the end piece facing the second receiving body, in which the second sealing ring is held, which abuts the second sealing surface.
  • the sealing rings are therefore held securely in the annular inner grooves of the connecting tube and do not pose any problems when handling the connector. They do not have to be additionally inserted when connecting the connector parts and cannot fall out either.
  • the receiving bodies are preferably tubular, sleeve-shaped or hollow-cylindrical and are suitable for accommodating at least one contact holder, by which the plug-in contacts of the plug-in connector unit in question are held.
  • the contact holder is preferably inserted into a connector body.
  • the connecting bodies of the two connector units have contact openings and can preferably be slid into one another in a form-fitting manner in such a way that correct and precise sliding of the plug contacts that correspond to one another is ensured.
  • first receiving body and the second receiving body have securing flanges on the ends facing one another, which after the connection of the two connector parts preferably interlock with one another in a form-fitting manner and form a preferably closed pipe section which is at least partially enclosed by the connecting pipe.
  • the electrical contacts and their supports are therefore doubly enclosed within the terminated tube section and within the connecting tube.
  • the securing flanges are an integral part of the associated receiving body and preferably have the same inner radius and outer radius as the adjoining part of the receiving body.
  • the securing flanges of the first and of the second receiving body preferably form mutually corresponding toothings, which ensure that the two plug parts are correctly aligned and are pushed into one another and held in a rotationally fixed manner.
  • the securing flanges can have a regular or irregular pattern. An irregular pattern is preferably provided, which ensures that the plug parts are correctly rotated relative to one another and pushed into one another. An incorrect connection of the connection contacts is therefore impossible. Since the two connector parts can no longer be rotated in relation to one another, it is also impossible for unwanted twisting to occur, which could stress the connected cables and the sealing elements.
  • the first and the second receiving body which are preferably provided on the front side with the safety bottles that correspond to one another, preferably have mutually complementary shapes on the front sides, which preferably overlap in a form-fitting manner. In this way, a further sealing of the interior space of the receiving bodies connected to one another takes place.
  • the first receiving body has a second external thread on which a first union nut is placed and/or that the second receiving body has a second external thread on which a second union nut is placed.
  • a lamellar basket is preferably held within each union nut, in which an elastic compression ring is arranged, which is compressed when the associated union nut is tightened and pressed against a connected cable. After the connector has been installed, its interior is therefore sealed off from the outside.
  • High-quality materials such as those specified in the EHEDG guidelines, for example, are preferably used for the receptacle bodies that form the housing of the connector, the connecting tube and the union nut.
  • the surfaces of the parts mentioned preferably have a high surface quality with little roughness.
  • Fig. 1a shows an example of a connector 9 according to the invention with a first connector part 1, which is designed as a plug, and a second connector part 2, which is designed as a socket.
  • the functions of the two connector parts 1, 2 are also interchangeable.
  • the first and the second connector part 1, 2 each have a tubular receiving body 10, 20, which are tightly connected to one another on the sides facing one another by a connecting device 3 with a connecting tube 30, which is shown in a sectional view, and which are connected to one another on the remote ends an external thread 102, 202 exhibit (see Figure 3b ), on which a union nut 19 or 29 is placed.
  • the transition from the connecting tube 30 to the first receiving tube 10 and to the second receiving tube 20 is sealed by first sealing rings 11 , 21 .
  • the transition between the front edge of the union nuts 19, 29 and the associated receiving body 10, 20 is sealed by a sealing ring 12, 22 each.
  • the connecting tube 30, the receiving body 10, 20 and the union nuts 19, 29 have indentations that allow the part in question to be held with a tool.
  • the connector parts 1, 2 can be equipped with any contacting devices with mutually corresponding plug contacts and sealing devices. Only preferred configurations are described below.
  • the connecting tube 30 of the connecting device 3 into which on the one hand the front end piece of the first receiving body 10 of the first connector part 1 and on the other hand the front end piece of the second receiving body 20 of the second connector part 2 protrude, has an end piece with an internal thread 301 and an end piece with an internal groove 300 on, in which a snap ring 302 is held.
  • the internal thread 301 of the connecting tube 30 is connected to an external thread 101 on the front side of the first receiving body 10 .
  • the snap ring 302 is in an outer groove 201 (see Figure 3b ) on the front side of the second receiving body 20 is held.
  • the snap ring 302 can, for example, be sunk so far into the outer groove 201 of the second receptacle 20 that it can be inserted into the connecting tube 30 and then expand into the inner groove 300 in the connecting tube 30 .
  • the snap ring 302 thus creates a positive connection between the second receiving body 20 and the connecting tube. That Connecting tube 30 is held by snap ring 302 in relation to second receiving body 20 so that it cannot be displaced axially, but is held in a rotatable manner.
  • the internal thread 301 of the connecting tube 30 engages with the front external thread of the second receiving body 20, after which the connector parts 1, 2 are pulled together by turning the connecting tube 30 and fixed in the end position.
  • the assembled and tightened connection tube 30 ensures a stable connection of the connector parts 1, 2 in coaxial alignment.
  • sealing rings 11, 21, are sealing rings 11, 21, through which the transition between the connecting tube 30 and the associated receiving body 10, 20 can be sealed.
  • Fig. 1a also shows that the interior of the connecting pipe 30 is additionally closed off by at least one securing flange 107, which is provided on the front side of the first receiving body 10 following the external thread 101, and by at least one securing flange 207, which is provided on the front side of the second receiving body 20 .
  • the securing flanges 107, 207 are preferably interlocked with one another without play, so that a tightly sealed tube section results, which additionally protects the internal contacts.
  • the locking bottles 107, 207 ensure that the connector parts 1, 2 can only be moved into one another if they are correctly aligned and rotated relative to one another. The connector parts 1, 2 can therefore be correctly connected to each other right away.
  • the securing flanges 107, 207 prevent the Connector parts 1, 2 can be twisted against each other. Twisting, which could stress or damage plug contacts and sealing elements, is therefore excluded.
  • Fig. 1b shows a sectional view of the entire connector 9 of Fig. 1a with a view of lamellar baskets 17, 27 contact holders 15, 25 for plug contacts 14, 24 and connecting bodies 16, 26 (hatched in 2 shown).
  • the plug contacts 14 of the first connector part 1 are inserted into sleeve-shaped plug contacts 24 of the second connector part 2, so that the electrical contact between the plug contacts 14, 24 is created.
  • FIG. 2 shows the connector 9 of Fig. 1a in a longitudinal section.
  • the lamellar baskets 17, 27, in which the compression rings 18, 28 are held, are supported on the contact holders 15, 25, which have each been pushed into a connecting body 16, 26 shown hatched.
  • the plug contacts 14, 24, which are held in the contact holders 15, 25, pierce the connecting bodies 16, 26 and are shifted into each other.
  • the first receiving body 10 and the second receiving body 20 are connected to each other by the connecting pipe 30 connected to the second receiving body 20 through the snap ring 302 .
  • Figure 3a shows the connector 9 of Fig. 1b after removing the contact holders 15, 25, the lamellar baskets 17, 27 and the compression rings 18, 28.
  • the sealing rings 11, 21 of the first connector part 1 and the sealing rings 21, 22 of the second connector part 2 as well as the snap ring 302, which the second receiving body 20 with connecting pipe 30 are not shown in section to illustrate the joints and sealing points.
  • the locking flanges 107, 207 that are shifted into one another and form an intermediate tube that connects the tubular first receiving bodies 10, 20 to one another in such a way that a continuous tube results, which forms the housing of the connector. If the securing flanges 107, 207 partially overlap, a largely sealed connection between the receiving bodies 10, 20 results even without a connecting device 3.
  • Figure 3a 10 therefore essentially shows the housing of the connector 9 with the receiving bodies 10, 20, which are connected to one another by the connecting tube 30 and on which the associated union nuts 19, 29 are placed.
  • these parts are preferably made of metal or plastic.
  • only some of these parts can be made of metal or plastic.
  • Figure 3b shows the connecting tube 30 of the connecting device 3 with the snap ring 302, which is inserted into an inner groove 300 in the connecting tube 30, and the first and second receiving body 10, 20 of FIG Figure 3a in exploded view.
  • first securing flanges 107 are connected to the thread 101 of the first receiving body 10 and that the second securing flanges 207 are connected to the outer groove 201 of the second receiving body 20 and are designed to be complementary to one another.
  • Figure 4a shows the first and the second connector part 1, 2 of Fig. 1a separated from one another and the connecting tube 30 of the connecting device 3, which is connected to the second connector part 2 by the snap ring 302, in a sectional view.
  • Figure 4b shows the first and the second connector part 1, 2 and the connecting tube 30 of Figure 4a in sectional view.
  • the contact holders 15, 25 have been inserted into connecting bodies 16, 26 which are designed to be complementary to one another at the front.
  • the plug contacts or plug pins 14 of the first connector part 1 are held in the first connecting body 16 and are enclosed at the front by a tubular part of the first connecting body 16 .
  • the plug contacts or socket contacts 24 of the second connector part 2 are held in the second connecting body 26, the front side of which can be inserted into the tubular part of the first connecting body 16.
  • Figure 5a shows the longitudinally sectioned first connector part 1 in an exploded view.
  • Figure 5b shows the longitudinally sectioned second connector part 2 in an exploded view.
  • the plug contacts 14, 24 have been removed from the contact holders 15, 25, which have been pulled out of the connection bodies 16, 26.
  • Figure 5a was the compression ring 18 shown separately from the Slatted basket 17 removed.
  • Figure 5b the compression ring 28 is inserted into the lamellar cage 27.
  • Figure 6a shows the first plug contacts 14 held in the first contact holder 15 and the first connecting body 16 of the first connector part 1 from FIG 2 and the second plug contacts 24 held in the second contact holder 25 and the second connecting body 26 of the second connector part 2 of FIG 2 .
  • the connecting bodies 16, 26 have shaped elements 161, 261 which correspond to one another at the front and which ensure precise mutual alignment. Furthermore isolated plug contacts 14, 24 are shown.
  • Figure 6b shows the first and second connecting bodies 16, 26 of FIG 2 and Figure 6a .
  • Figure 7a shows the connector 9 according to the invention in a further preferred embodiment.
  • the receiving bodies 10, 20 overlap at the front with end pieces 109, 209, which are preferably provided on the securing flanges that are shifted relative to one another.
  • the overlapping of the receiving bodies 10, 20 at the front results in a particularly good seal between the connector parts 1, 2 against external influences.
  • the design of the housing of the connector 9 from metal results in particularly good shielding against electromagnetic interference.
  • Figure 7b shows the connector 9 without housing parts.
  • the connector 9 also has metal contacting devices 170, 270 for contacting the cable shielding, which are arranged inside the connector 9 and shown separately outside.
  • the contacting devices 170, 270 are cylindrical and have an annular flange on the front.

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  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
EP21162841.7A 2021-03-16 2021-03-16 Connecteur enfichable pour conduites électriques Pending EP4060824A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21162841.7A EP4060824A1 (fr) 2021-03-16 2021-03-16 Connecteur enfichable pour conduites électriques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21162841.7A EP4060824A1 (fr) 2021-03-16 2021-03-16 Connecteur enfichable pour conduites électriques

Publications (1)

Publication Number Publication Date
EP4060824A1 true EP4060824A1 (fr) 2022-09-21

Family

ID=74884875

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21162841.7A Pending EP4060824A1 (fr) 2021-03-16 2021-03-16 Connecteur enfichable pour conduites électriques

Country Status (1)

Country Link
EP (1) EP4060824A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0150556A2 (fr) * 1983-12-27 1985-08-07 Whittaker Corporation Joint hermétique pour un dispositif de connecteurs protégé contre l'eau
DE202010005055U1 (de) 2010-04-15 2011-08-12 Pepperl + Fuchs Gmbh Steckverbinder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0150556A2 (fr) * 1983-12-27 1985-08-07 Whittaker Corporation Joint hermétique pour un dispositif de connecteurs protégé contre l'eau
DE202010005055U1 (de) 2010-04-15 2011-08-12 Pepperl + Fuchs Gmbh Steckverbinder

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