EP3923421A1 - Dispositif de raccordement électrique à un corps de base et à un corps coulissant - Google Patents

Dispositif de raccordement électrique à un corps de base et à un corps coulissant Download PDF

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Publication number
EP3923421A1
EP3923421A1 EP20179079.7A EP20179079A EP3923421A1 EP 3923421 A1 EP3923421 A1 EP 3923421A1 EP 20179079 A EP20179079 A EP 20179079A EP 3923421 A1 EP3923421 A1 EP 3923421A1
Authority
EP
European Patent Office
Prior art keywords
base body
conductor tracks
sliding
conductor
electrical connection
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
EP20179079.7A
Other languages
German (de)
English (en)
Inventor
Tobias Frasch
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.)
Afag Holding AG
Original Assignee
Afag Holding 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 Afag Holding AG filed Critical Afag Holding AG
Priority to EP20179079.7A priority Critical patent/EP3923421A1/fr
Priority to US17/340,956 priority patent/US11621524B2/en
Priority to CA3121760A priority patent/CA3121760A1/fr
Publication of EP3923421A1 publication Critical patent/EP3923421A1/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
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • 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
    • H01R13/02—Contact members
    • H01R13/26—Pin or blade contacts for sliding co-operation on one side only
    • 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
    • H01R13/5219—Sealing means between coupling parts, e.g. interfacial seal
    • 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
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
    • H01R13/6315—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only allowing relative movement between coupling parts, e.g. floating connection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2107/00—Four or more poles
    • 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 invention relates to an electrical connection device with a base body and a sliding body, which are mounted to be linearly movable to one another in a longitudinal direction, the base body having a cavity in which a longitudinal section of the sliding body is received or vice versa, the length of the longitudinal section received in the cavity is variable by a relative movement of the base body and sliding body in the longitudinal direction.
  • signals or electricity are often to be fed to a moving component.
  • signals or currents are to be fed to a moving slide or to a telescopically extending component.
  • Areas of application for such current or signal routing can be found, for example, in handling technology, automation technology, assembly technology, linear technology and in the field of manipulators and portals.
  • flexible cables could be used to connect components that move linearly to one another. In order to ensure that the cable does not fall below the smallest permissible bending radius, it is typically guided by a drag chain. However, this can lead to additional installation space consumption and limit the cycle times that can be achieved.
  • the invention is thus based on the object of providing a connection for a plurality of signal or power lines with little technical effort and little space requirement.
  • electrical contacting can be implemented in a particularly compact manner if the respective contact elements, i.e. the sliding elements or conductor tracks, are not arranged next to one another in one plane, but rather if their surfaces are angled to one another or they are in a circumferential direction are arranged distributed perpendicular to the longitudinal direction in a gap between the base body and the sliding body.
  • the respective contact elements i.e. the sliding elements or conductor tracks
  • the sliding elements or conductor tracks are not arranged next to one another in one plane, but rather if their surfaces are angled to one another or they are in a circumferential direction are arranged distributed perpendicular to the longitudinal direction in a gap between the base body and the sliding body.
  • the base body preferably has the cavity and the sliding body is partially received therein.
  • the grinding elements can be relatively short in the longitudinal direction, so that it can thereby be achieved that the grinding elements remain in every possible position between the base body and the displacement body within the cavity of the base body. In this way, contact protection for all current-carrying components can be achieved with particularly simple means, since both the conductor tracks and the grinding element always remain within the cavity. For the same reason, such an arrangement can also help prevent contamination of the contact surfaces. In principle, it would alternatively also be possible for the base body to be received in a cavity in the sliding body.
  • the relative displacement of the base body and the displacement body can take place manually or by an actuator that does not belong to the connecting device, for example an actuator of a machine that includes the electrical connecting device.
  • the linear guidance of the sliding body with respect to the base body can be implemented by the electrical connection device itself. Particularly advantageous embodiments of such a storage will be explained later. In principle, however, it would also be possible to achieve the linear guidance of the two components with respect to one another by means of external components.
  • the electrical connection device can in particular serve to make electrical contact in a machine with components that are moved linearly with respect to one another.
  • the displacement body is in particular freely displaceable between two extreme positions with respect to the base body, wherein the electrical connection device can in particular have stops or the like in order to limit a displacement path.
  • a respective grinding element and a respective conductor track preferably remain in contact over the entire displacement path between the extreme positions.
  • the slider is guided along the conductor track.
  • the electrical connection device described is suitable both for transporting high currents and for providing signal lines or the like with low current flows. In this case, all pairs of conductor tracks and sliding elements can carry similar currents. However, it is also possible that parts of the pairs are used to conduct higher currents, while other pairs form digital signal lines, for example.
  • the base body surface or the sliding body surface has the described shape in particular within each cross-sectional plane within a section in the longitudinal direction of the electrical connection device in which the conductor tracks extend or in which the grinding elements are attached.
  • a round shape is to be understood as meaning, in particular, a circular shape, but also an elliptical shape or the like.
  • at least three conductor tracks and at least three grinding elements can be distributed in the circumferential direction along the respective surface. In particular, even numbers of conductor tracks or grinding elements can be used which lie opposite one another.
  • the respective surface can in particular be polygonal. But it is also possible that the surface sections are connected by rounded corners or the like.
  • the surface sections at an angle to one another can each have at least one conductor track or at least one grinding element. In particular, even numbers of conductor tracks or Grinding elements are used, two of the conductor tracks being arranged on opposite sides of the base body surface and in particular parallel to one another. However, it can also be advantageous if some of the surface sections at an angle to one another do not have a conductor track or a grinding element. This can serve, for example, to form projections between grooves in which the conductor tracks are arranged.
  • corresponding grooves can be used to guide the grinding elements and thus block a relative rotation of the base body and displacement body to one another, if this is not achieved by other means anyway.
  • the grinding elements can in particular be elastically pretensioned so that the contact of the grinding elements with the respective conductor track simultaneously guides and centering the sliding body or the base body within the cavity.
  • the grinding elements can protrude from the sliding body surface in directions that are angled to one another.
  • the base body and / or the sliding body can each be designed as a rod-shaped hollow body or rod-shaped solid body.
  • a base or displacement body designed as a rod-shaped hollow body can also be referred to as a tubular base or displacement body.
  • the body forming the cavity ie preferably the base body, is a hollow body or tubular and at least partially accommodates the other body, ie preferably the sliding body, which can be a solid or a hollow body.
  • a tubular shape of a sliding body received in the cavity can be advantageous, for example, in order to lead connecting lines for the sliding elements to the sliding body in the interior of the sliding body.
  • the base body and the sliding body can, in particular, be inserted into one another in a telescopic manner.
  • the base body can have an associated further conductor track for at least one of the conductor tracks, the respective conductor track and the respective assigned further conductor track being arranged in the or a cross-sectional plane perpendicular to the longitudinal direction opposite one another on the base body and being conductively connected to one another.
  • the displacement body can have an associated further grinding element for at least one of the grinding elements, the respective grinding element and the respective associated further grinding element being arranged on the displacement body opposite one another in the cross-sectional plane and being conductively connected to one another. This can in particular serve to provide a redundant contact pair through a respective pair of conductor track and further conductor track or sliding element and further sliding element that carries the same signal or carries out a common current conduction.
  • a movement of the sliding body with respect to the base body perpendicular to the longitudinal direction may in this case lead to poorer contact between the conductor track and the sliding element.
  • the further conductor track and the further grinding element are moved closer to one another, as a result of which the poorer contact between conductor track and grinding element can at least largely be compensated for.
  • connection lines can be routed at least in sections through an inner cavity of the sliding body.
  • the sliding body can in particular be tubular and the connecting lines can pass through the interior of the Rohrs are guided.
  • connection lines in the interior of the cavity can be routed to an open end of the sliding body in order to run around the face of the sliding body there and to contact the grinding elements arranged in particular near the face.
  • the wall of the grinding element it would also be possible, for example, for the wall of the grinding element to have openings through which the connecting lines are routed in order to contact the grinding elements or through which the grinding elements are routed in order to contact the connecting lines.
  • connection lines can be routed outside the cavity.
  • the sliding body can be a solid body, that is to say in particular not have a cavity.
  • the base body can comprise a flat and at least partially flexible line carrier which carries the conductor tracks and which is held in a bent position by being inserted bent into a tube of the base body and / or by attaching two edges of the line carrier to one another.
  • a so-called rigid-flex printed circuit board can be used as the contact means carrier, which comprises rigid and flexible sections which, in particular in the fully assembled electrical connection device, alternate in the circumferential direction of the base body.
  • the rigid sections can have, for example, conductor tracks or also projections arranged between them. By using flexible sections, the rigid sections can be brought into a position that is angled to one another.
  • an inherently stable base body By connecting the edges of the line carrier, an inherently stable base body can be formed in this case, so that an outer tube is not absolutely necessary for stabilization. However, it can still be used to further increase the robustness of the electrical connection device.
  • the conductor tracks could, for example, be applied to a film, for example a semiflex circuit board film, which typically does not result in an inherently stable base body simply by bending the film. The bent film can thus be inserted into a tube in order to keep the shape once given.
  • the conductor carrier can be a printed circuit board or film on which the conductor tracks are applied directly.
  • the conductor tracks can for example be printed on or produced by etching.
  • the conductor carrier can also carry separately produced conductor tracks, for example thin metal flakes, which can be glued or held in a form-fitting or force-fitting manner, for example.
  • the conductor carrier can have a sheathing that shields electromagnetic radiation, which is formed in particular by the tube, and / or has a coating that shields electromagnetic radiation.
  • the sheathing or coating can in particular be conductive.
  • the sheathing or coating can preferably be conductively connected to a reference potential when the connecting device is in operation.
  • the sheathing or coating can improve the electromagnetic compatibility (EMC) of the connecting device or signals carried by it can be shielded from interference. This function can be fulfilled e.g. by the pipe, especially if it is made of conductive material.
  • EMC electromagnetic compatibility
  • This function can be fulfilled e.g. by the pipe, especially if it is made of conductive material.
  • the conductor carrier and / or the conductor tracks can each be flexible, semi-flexible or rigid.
  • the conductor track and / or the line carrier can be clamped in the longitudinal direction at least on one side by an elastically deformed tolerance compensation element.
  • a seal or some other elastically deformable element can be clamped between a screw screwed into the tube at the end and the conductor tracks or the conductor carrier.
  • the conductor tracks or the conductor carrier can be clamped, for example, by a bearing for longitudinal guidance, a sealing ring or another elastically deformed tolerance compensation element.
  • Jamming by at least one tolerance compensation element can be minor Compensate for differences in length of the individual conductor tracks or tolerances in the manufacture of the line carrier with little effort, especially if it is used in conjunction with a screw, as explained above.
  • a sealing means in particular a sealing ring, can be arranged between the base body and the sliding body.
  • this can serve to protect the cavity and thus the area in which the electrical contacts are located from foreign bodies, dust, splash water, etc.
  • various complex sealing measures can be taken. Since the body forming the cavity, i.e. in particular the base body, can be sealed off without any problems on all sides apart from the side on which the sliding body or the base body protrudes beyond the cavity, a relatively simple seal, for example with a sealing ring , are sufficient to achieve the desired degree of protection.
  • a seal in particular a sealing ring, can also serve as a linear guide so that, for example, the guidance of the sliding body with respect to the base body is already carried out jointly by such a seal at one end of the body forming the cavity, i.e. in particular the base body, and the sliding body is supported on the base body can be realized by the grinding elements.
  • the respective grinding element can be a spiral spring, in particular a leaf spring.
  • a pre-curved spiral spring can be used, which rests against the conductor track with a spring arch. In this way, less wear on the conductor track can be achieved than when the end of the spring is placed on it.
  • One end of the spiral spring can be attached to the sliding body and the other end can be pressed onto the surface of the sliding body or guided in a recess of the sliding body by the tension of the spiral spring between the base and sliding body.
  • one of the ends of the spiral spring can be displaced in the longitudinal direction with respect to the sliding body when the force exerted by the base body on the spiral spring varies.
  • the grinding element or in particular the The spiral spring can be attached to the sliding body by gluing, soldering, welding, locking or the like.
  • the sliding element or a contact section or contact point of the respective sliding element, via which the respective contact element contacts the respective conductor track, can be matched to the specific application of the connecting device with regard to its mechanical and / or electrical properties. For example, different current intensities and / or frequencies can be transmitted for different connecting devices or an expected frequency, a typical length and / or a typical speed of the displacement of the sliding body with respect to the base body can vary.
  • the size and / or shape of a contact area between the grinding element and the conductor track, a spring stiffness of a grinding element designed as a spring, a surface material, etc. can be varied in order to achieve an adaptation to a given application.
  • the base body can form a projection for at least a pair of adjacent conductor tracks, which protrusion extends between the conductor tracks in the longitudinal direction. This enables robust insulation of the conductor tracks or the sliding elements from one another. At the same time, corresponding projections can serve to guide the grinding elements, so that in particular a rotation of the sliding body relative to the base body about an axis running in the longitudinal direction can be blocked by the interaction of the projections and the grinding elements.
  • At least one ground conductor track can be arranged, which extends parallel to the respective conductor track in the longitudinal direction of the base body.
  • the ground conductor track or the ground conductor tracks can be at a defined reference potential, for example at ground potential, when the connection device is in operation.
  • a device comprising the connecting device can in this way be set up so that the at least one ground conductor track has the reference potential applied to it during operation of the device.
  • a ground conductor path is routed on one side or preferably on both sides of at least one of the conductor tracks results in a pseudo-coaxial line in which interference has essentially the same effect on a signal line, i.e. the conductor track, and a ground, i.e. the ground conductor track. This reduces the influence of such interference without the need for symmetrical signal routing.
  • ground conductor tracks and ground conductor tracks can be arranged alternately.
  • the ground conductors do not necessarily have to be contacted by the sliding body.
  • the ground conductor tracks can be short-circuited to one another within the connecting device or via a device comprising this, since they should be at a common reference potential.
  • the base body can comprise a respective termination resistor for at least one of the conductor tracks and / or the displacement body can comprise a respective termination resistor for at least one of the sliding elements.
  • the respective termination resistor can couple the respective conductor track or the respective sliding element in the area of a respective free end to a reference potential, for example a ground potential.
  • the free end can be considered to be that section which, starting from a connection on the base body or on the sliding body side of the connection device for contacting an external device, lies beyond the contact point between the sliding element and the conductor track. If the conductor track or the grinding element is subjected to an alternating voltage signal, this is guided through the respective conductor track or the respective grinding element beyond the contact point in the direction of the respective free end and is reflected there.
  • termination resistor can be an ohmic resistor or a complex resistor, which is formed, for example, by an LC element.
  • Fig. 1 shows an electrical connection device 1 with a base body 2 and a sliding body 3, which in a longitudinal direction, namely transversely in Fig. 1 , are movably mounted to one another.
  • Fig. 2 shows a section through the connecting device 1 along the line II-II and Fig. 3 shows such a section along the line III-III.
  • the base body 2 has a cavity 4 in which a longitudinal section 5 of the sliding body 3 is received.
  • the length of the longitudinal section 5 and thus the overall extent of the connecting device in the longitudinal direction can be varied by a relative movement of the base body 2 and the displacement body 3.
  • the base body 2 carries several, in the example ten, conductor tracks 6, which extend in the longitudinal direction.
  • the contact surface 7 of the respective conductor tracks 6 is contacted by a respective sliding element 8, in the example a leaf spring.
  • the leaf spring in the example is fastened at one end 9 to the sliding body 3 and also makes contact with a respective connection line 10 which is guided in an inner cavity 24 of the sliding body 3.
  • the other end 25 of the leaf spring is essentially freely movable in the longitudinal direction in order to compensate for a deformation of the leaf spring caused by the exertion of force by the contact surface 7.
  • Contact means, not shown, of the electrical connection device 1 can be used to contact the conductor tracks 6 on the part of the base body 2 and the sliding elements 8 or the connecting lines 10 contacting them on the part of the sliding body 3.
  • an electrical connection of variable length for a large number of different signals or power lines can be implemented with little technical effort.
  • conductor tracks 6 are used whose contact surfaces 7, as in particular in FIG Fig. 3 is easy to see, are angled to each other.
  • the grinding elements 8 protrude in different directions from the sliding body surface 11 of the sliding body 3.
  • the sliding body surface 11 is circular.
  • the base body surface 12, which carries the conductor tracks 6, is formed from a multiplicity of surface sections 13 at an angle to one another. Ten of the surface sections 13 each carry one of the conductor tracks 6.
  • the remaining surface sections form projections 14 which, on the one hand, serve to ensure robust insulation between the various conductor tracks 6 or grinding elements 8.
  • these projections 14 can help to block a relative rotation of the sliding body 3 and the base body 2, if it is not anyway by other means, for example by a Linear guidance of the components coupled via the connecting device 1 in a machine is realized.
  • the connecting device 1 With the configuration of the connecting device 1 shown in the example, ten separate signals or currents could in principle be transmitted.
  • the respective opposing conductor tracks 6 or grinding elements 8, which is what such a pair in Fig. 3 is shown schematically by the arrow 15, conductively connected to one another. In this way, fluctuating contact qualities in the event of a relative movement of the base body 2 and the displacement body 3 perpendicular to the longitudinal direction can be largely compensated for.
  • the respective number can be slightly increased without a significant increase in installation space being necessary.
  • sixteen conductor tracks and sliding elements can be used to form eight independent signal lines, for example for a Gigabit Ethernet connection.
  • the base body 2 is formed in that a line carrier 17, which can be flexibly bendable at least in sections, is inserted into a tube 16.
  • the conductor carrier 17 can initially be produced as a flat conductor carrier 17.
  • the conductor tracks 6 can be fastened to this as separate components, for example glued on, or can be produced directly on the conductor carrier 17, for example by etching or printing.
  • the line support 17 is in particular in the transverse direction Fig. 4 bendable in sections and stiff in sections. This can be achieved, for example, in that the conductor carrier 17 is milled thin in sections from the rear side 18 in order to achieve flexibility.
  • the line support 17 can then be bent, in particular such that its edges 19 touch, and inserted into the tube 16.
  • the conductor tracks 6 distributed in the circumferential direction can be produced on the inside of the base body 2 with little technical effort.
  • the use of the pipe 16 can also be dispensed with under certain circumstances, for example if the edges 19 of the line support 17 are glued to one another or connected in some other way.
  • the line carrier 17 or the conductor tracks 6 are in the example, as in Fig. 2 can be seen, clamped by the slide bearing 20 and the screw 22 in the tube 16.
  • the sliding bearing 20 can first be used, then the line support 17 can be inserted into the pipe 16 and the pipe can then be closed by the screw 22.
  • an elastic element is provided between the screw 22 and the line carrier 17 in the example deformed tolerance compensation element 21, for example a seal 25, clamped.
  • the grinding elements 8 and the conductor tracks 6 are largely protected from contamination. This is particularly the case since the tube 16 is closed on one side by the screw 22 with the seal 25 arranged thereon, so that a high degree of tightness is typically achieved on this side anyway. On the opposite side, the use of the plain bearing 20 already leads to a seal against larger particles and an extensive seal against dust.
  • an additional sealing means 23 can be applied to the inside and / or outside of the sliding bearing 20, for example.
  • a further device for example a linearly moving component, can be coupled to the sliding body via the sealing rings 26, which are only shown as an example electrical contacting of the further device can be sealed against environmental influences.
EP20179079.7A 2020-06-09 2020-06-09 Dispositif de raccordement électrique à un corps de base et à un corps coulissant Pending EP3923421A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20179079.7A EP3923421A1 (fr) 2020-06-09 2020-06-09 Dispositif de raccordement électrique à un corps de base et à un corps coulissant
US17/340,956 US11621524B2 (en) 2020-06-09 2021-06-07 Electrical connecting device having a main body and a displacement body
CA3121760A CA3121760A1 (fr) 2020-06-09 2021-06-09 Dispositif de connexion electrique ayant un corps principal et un corps de deplacement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20179079.7A EP3923421A1 (fr) 2020-06-09 2020-06-09 Dispositif de raccordement électrique à un corps de base et à un corps coulissant

Publications (1)

Publication Number Publication Date
EP3923421A1 true EP3923421A1 (fr) 2021-12-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20179079.7A Pending EP3923421A1 (fr) 2020-06-09 2020-06-09 Dispositif de raccordement électrique à un corps de base et à un corps coulissant

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US (1) US11621524B2 (fr)
EP (1) EP3923421A1 (fr)
CA (1) CA3121760A1 (fr)

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