EP4540894A1 - Contact de puissance serré - Google Patents
Contact de puissance serréInfo
- Publication number
- EP4540894A1 EP4540894A1 EP23736182.9A EP23736182A EP4540894A1 EP 4540894 A1 EP4540894 A1 EP 4540894A1 EP 23736182 A EP23736182 A EP 23736182A EP 4540894 A1 EP4540894 A1 EP 4540894A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- central element
- housing
- ring
- contact
- volume
- 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
Links
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
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
- H01R4/5016—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw using a cone
-
- 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
- H01R13/10—Sockets for co-operation with pins or blades
- H01R13/11—Resilient sockets
- H01R13/111—Resilient sockets co-operating with pins having a circular transverse section
-
- 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
- H01R13/193—Means for increasing contact pressure at the end of engagement of coupling part, e.g. zero insertion force or no friction
-
- 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
- H01R13/633—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 disengagement only
- H01R13/635—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 disengagement only by mechanical pressure, e.g. spring force
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
- H01R4/52—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw which is spring loaded
Definitions
- the present application concerns the field of electrical connectors equipped with a male contact intended to fit into a female contact. It aims at an improved connector and applies in particular to connectors designed to withstand high currents.
- Preserving the quality of the electrical contact between the male and female parts of a connector is, due to losses and heating, all the more critical when a connector is intended to carry high currents.
- the elastic structure is in this case in a conductive material of given stiffness.
- Such an elastic structure is sensitive to high temperatures and has limited performance to the extent that a compromise must be found between its electrical properties on the one hand, and mechanical properties on the other.
- Another type of connector in which an external spring structure is arranged around the female contact can also be considered.
- the female part which surrounds the male part is then made slightly deformable and the external spring structure ensures the tightening of the female part on the male part of the electrical connector. Since the spring here has no electrical conduction function, it can be optimized in terms of mechanical characteristics. However, tightening tends to generate friction between the contact surfaces during insertion and consequently to damage the latter if it is too great.
- the female contact being equipped with:
- a central element internally defining an axial internal housing to accommodate a male contact, said axial internal housing extending along a longitudinal axis and comprising a so-called “mouth” zone through which the male contact is intended to penetrate, and a so-called “bottom” zone opposite which the male contact is intended to be located in a first so-called “tight” position of the connector,
- a ring arranged around said central element and distinct from said central element, the ring being mounted movable relative to the central element and arranged so that an internal wall of the ring is able to slide against an external region of said element central, said internal wall of the ring delimiting an opening of constricted shape, in particular frustoconical or conical, complementary to a profile of said external region of the central element, said constricted shape having a cross section which gradually decreases that we move parallel to said longitudinal axis from the mouth zone towards the bottom zone.
- constricted shape in particular frustoconical or conical
- an elastic member is arranged between the ring and an external region of the central element.
- the elastic member is typically in the form of at least one spring tending to push the central element.
- the elastic member is typically connected to an end region of the ring.
- the male contact is accommodated in the internal axial housing by crossing the mouth area before arriving at the bottom area.
- the elastic member tends to push back the central element of the ring when the male contact is pushed towards the bottom zone of the axial internal housing of the female conductor.
- the central element of the female contact can be provided with a plurality of fingers defining at least part of the axial internal housing at its mouth area, each finger having a free end, distinct from the respective free ends of the others fingers and another end opposite the end and attached to a base.
- the external region of the central element comprises a bulge at an upper end of the central element, said elastic member being arranged between said bulge and an upper edge of the ring.
- the latter can be equipped with a male contact comprising:
- a conductive base opposite which an upper edge of the central element of the female contact is intended to be placed - a conductive rod intended to penetrate said internal axial housing, the conductive rod having a shape complementary to that of the internal axial housing, in particular the shape of a cylinder of revolution.
- the electrical connector may further comprise a contact housing box.
- the housing may be provided with a part with an internal space provided with a first volume in which the male contact is intended to be inserted and a second volume in which the female contact is intended to be accommodated.
- the second volume typically has a cross section smaller than that of the first volume.
- the ring is movable relative to said part of said housing and attached to this part via a second elastic member, in particular in the form of at least one other spring.
- a second elastic member can be provided to compensate for play and expansion while maintaining pressure on the ring.
- the second elastic member is attached to a second end region of the ring opposite said end region, and in which the second volume of said housing part is arranged between the first volume and a third volume narrowed relative to in the second volume, the housing comprising a stop zone around an interface zone between the second volume and the third volume, said stop zone being provided at the level of said constriction, said second elastic member being attached to said stop zone .
- said housing part comprises, in the first internal volume, a tapping to accommodate a thread disposed laterally on the male contact.
- the male contact is in a housing part provided with a protruding area having a thread and the female contact in another housing part having an external thread.
- the base of the male contact can be surrounded by an envelope made of insulating material and which has the thread to allow the male contact to be screwed into said housing part.
- the central element of the female contact can be movably mounted in said part of said housing.
- an upper end of the central element of the female contact is located in the second volume and in a released position an upper end of the central element of the female contact extends into the first volume.
- Figures IA and IB illustrate an example of a connector as implemented according to an embodiment of the present invention and in a first so-called “tight” position.
- Figures 2A and 2B illustrate the connector in a second so-called “loose” position.
- Figure 3 illustrates an example of implementation of the housing for the female contact of the connector.
- Figure 4 illustrates an example embodiment of the female contact of the connector.
- Figures 1A-1B (respectively giving a longitudinal sectional view and a cross-sectional view), we can see an example of a connector electrical implemented according to one embodiment of the present invention, and which is in a first position, called "tight", in which an electrical contact, in particular an optimal electrical contact, is ensured.
- the connector can be dedicated to use in a voltage range, which is high in particular compared to the usual voltages 28VDC and 115VAC commonly used in aeronautics: 500 V and more.
- the connector can be used in a particularly continuous voltage range, for example between 400 VDC and 2000 VDC and with a high current, in particular greater than 50 A, for example between 80 A and 1000 A.
- the connector is provided with a male contact 30, of oblong shape, typically provided with a conductive rod 33 which can be in the shape of a cylinder of revolution.
- the conductive rod 33 has a smooth coating and is made of a metallic conductive material, for example such as silver-plated copper.
- the conductive rod 33 is inserted into an axial internal housing 121 of a female contact 10 made up of several parts (also shown alone in a schematic and simplified manner in Figure 4).
- the axial housing 121 extends along a longitudinal axis A'A (axis which extends parallel to the axis x of an orthogonal reference [O;x;y;z] given in the figures).
- A'A axis which extends parallel to the axis x of an orthogonal reference [O;x;y;z] given in the figures.
- the conductive rod 33 of the male contact 30 extends from a base 31 wider than the rod 33.
- a transverse surface 31A of the base 31 located around the rod 33 is intended to be placed, facing, and possibly abutting against, or in contact with, an upper end 122 of a central element 12 of the female contact 10.
- the male contact rod 33 can have a significant length L (dimension measured parallel to the x axis of an orthogonal mark [O; x; y; z]), for example between 10 and 40 mm, in particular between 15 and 30mm.
- the central element 12 of the female contact 10 internally defines the internal axial housing 121 for receiving the male contact 30.
- This internal axial housing 121 has a shape complementary to that of the rod 33, with a cross section SI (dimension measured orthogonal to the longitudinal axis A'A and parallel to the plane [O;x;y]) preferably constant.
- the axial internal housing 121a can thus have in particular the shape of a cylinder of revolution.
- the internal wall of the central element 12 delimiting this internal axial housing 121a is provided with a coating provided preferably smooth and made of a material that is a good electrical conductor, in particular a metallic material such as, for example, silver-plated copper.
- this central element 12 of the female contact 10 comprises a so-called “mouth” zone 121A through which the male contact 30 is intended to penetrate, and extends to a so-called “bottom” zone 121B delimiting the internal housing and located opposite the mouth zone 121A.
- the male contact 30 is introduced into the axial housing 121 by crossing the mouth zone 121A before arriving at the bottom zone 121B.
- the connector has a clearance between the male contact 30 and an internal wall of the central element 12 of the female contact 10.
- This clearance for example of the order of several tenths of a millimeter, is such that the nesting of the two contacts 10, 30 can be carried out while limiting friction, in particular at the start of the nesting phase.
- the central element 12 of the female contact 10 may include a cutout on a portion of its sides.
- This cutout can be such that the portion of the central element 12 comprising the cutout is provided with a plurality of fingers 129.
- Each finger 129 also called “branch” having a free end. The free end of each of the fingers is distinct from the respective free ends of the other fingers 129.
- the fingers 129 can each have the shape of a portion of a cylinder of revolution.
- the free end of the fingers 129 is located at the level of the “mouth” zone 121A, while another end, opposite the free end, is attached to a base 128 of the central element 12, this base 128 forming the bottom zone 121B of the axial internal housing.
- the female contact 10 here has the particularity of being equipped with a part or an element separate from the central element 12 in the form of a ring 14 also called “sleeve" which is arranged around the central element 12 and movable relative to the central element 12.
- the ring 14 can move in translation relative to this central element 12, in particular during a phase of insertion of the male contact 30 to result in the so-called “tight” position or during a phase of disinsertion of the male contact 30.
- the ring 14 is provided with an internal wall 143 intended to slide against an external region 125 of the central element 12.
- This internal wall 143 of the ring 14 delimits an opening of tight shape which is complementary to that of a profile of the external region 125 of the central element 12.
- the internal opening of the ring 14 has a cross section S2 (dimension measured orthogonal to the longitudinal axis A'A and parallel to the plane [O;x;y] of an orthogonal reference mark [O;x;y;z] ) which decreases as one moves parallel to the longitudinal axis A'A from the mouth zone 121A towards the bottom zone 121B.
- This narrowed shape is advantageously frustoconical or conical.
- the external region 125 of the central element 12 has a complementary cone or frustoconical shape. Such a shape makes it possible to limit friction at the start of the interlocking of the contacts or during a disconnection phase when the male contact is preparing to leave the female contact.
- the ring 14 is here connected to the central element 12 by means of an elastic member 25 which can be in the form of at least one spring.
- the elastic organ can be in particular arranged between an end edge 142 of the ring 14 and an external region of the central element 12.
- the elastic member 25 can be a spring formed for example from type 316 stainless steel.
- the elastic member 25 is configured to push the central element 12 of the ring 14.
- the conical zones of the external region 125 and the internal wall 143, respectively of the element central 12 on the outside, and ring 14 on the inside are not pressed against each other. It follows that there is no radial force induced on the surface 121 of the element 12 and therefore no tightening on the part 33 of the male contact.
- the member 25 is tightened, there follows a progressive tightening force of the central element 12 on the male contact 30.
- the elastic member 25 facilitates the operation of loosening the contact during which it is possibly desired to remove the male contact 30 from the female contact 10.
- the elastic member 25 ensures that the ring is disengages from the external region of the central element by releasing the pressure on the latter even before the female contact 10 begins to slide on the male contact 30.
- the elastic member 25 typically in the form of a spring is provided with sufficient elongation to cover the travel of the ring 14, and a sufficiently high stiffness which makes it possible to release the ring 14 from the central element 12 of the female contact 10 whatever regardless of the previous tightening condition.
- the elastic member 25 is attached to a bulge 127, arranged on the external side walls of the central element 12 in particular at the level of its fingers 129.
- the elastic member 25 can be connected to the ring 14 via a so-called “upper” edge 142 of the latter.
- the elastic member 25 thus has a limited size.
- the connector is also typically provided with at least one housing 60 for receiving the contacts.
- This housing 60 can be formed of two distinct and separable main parts, a part 40 secured to the female contact 10 and a part 50 secured to the male contact 30.
- the part 40 of housing 60 can be provided for example, at least at the level of the internal surface in insulating material such as a high performance plastic for example polyetheretherketone, designated by the acronym PEEK, a KINEL® plastic, or such as a ceramic material.
- insulating material such as a high performance plastic for example polyetheretherketone, designated by the acronym PEEK, a KINEL® plastic, or such as a ceramic material.
- the male contact 30 is typically surrounded by a part 50 of the housing 60, forming an insulating envelope, at least at the level of the internal surface near the contact 30, for example made of insulating material such as a high performance plastic material for example.
- insulating material such as a high performance plastic material for example.
- PEEK polyetheretherketone
- KINEL® plastic or such as a ceramic material, provided around its base 31.
- an internal space of the housing 40 comprises a first volume 410 in which the envelope of the male contact 30 is intended to be inserted.
- the first volume 410 of the housing 40 matches the shape of the assembly formed by the base 31 and the insulating envelope 50.
- a second volume 420 of section S42 different from that S41 of the first volume 410 (S42 and S41 being dimensions measured parallel to the plane [O;x;y] of the mark [O;x ;y ;z]) and here lower than that of the first volume 410, makes it possible to accommodate the female contact 10.
- a part of the central element 12, comprising the internal housing for receiving the male contact is particularly willing.
- a third volume 430 narrowed relative to the second volume 420 and arranged following the second volume 420 is provided to house the base 128 of the central element 12 of the female contact 10.
- the housing part 40 here comprises a stop zone 461 around an interface zone 460 between the second volume 420 and the third volume 430.
- the stop zone 461 can be provided to stop the travel of the ring 14, in particularly when the latter is subjected to a thrust from the elastic member 25 itself put into compression by means of the central element 12 when the male contact 30 exerts a force on the latter.
- a drop at the level of the internal wall of part 40 of the housing can form another stop 451 intended for its part to stop the male contact 30 when tightening the latter.
- the connector can be provided with a second elastic member 27.
- the second elastic member Tl typically in the form of at least one spring is arranged between the ring 14 and the housing part 40.
- This second elastic member Tl serves to compensate for differential play and expansion, in order to maintain pressure on the ring 14 on the central element 12 of the female contact 10.
- This spring is typically provided with low elongation and high stiffness.
- the second elastic member Tl can be formed from type 316 stainless spring steel.
- the second elastic member Tl is attached to the abutment zone 461 of part 40 of the housing.
- the second elastic member Tl can also be attached to a second end region 144 of the ring 14 opposite that to which the elastic member 25 is attached.
- the housing part 40 has on its internal walls and in the first internal volume 410 a tapping 481 to accommodate a thread 51 made on a peripheral part of the male contact 30, in particular on the envelope 50 arranged around the base 31.
- the female contact 10 moves axially relative to the part 40 of the connector housing.
- the central element 12 is pushed back by the elastic member 25 towards the first volume 410 of the part 40 of the housing 60.
- the upper end 122 of the central element 12 can thus protrude into the first volume 410 of the part 40 of the housing while this upper end 122 is maintained in the second volume 420 of the part 40 of the housing when the connector is in the tightened position.
- An arrangement as described above can also be applied with an inversion of the tappings and threads between the parts 40 and 50 of the housing 60, the part 50 then coming above the part 40.
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2205956A FR3136902B1 (fr) | 2022-06-17 | 2022-06-17 | Contact de puissance ameliore |
| PCT/FR2023/050860 WO2023242516A1 (fr) | 2022-06-17 | 2023-06-14 | Contact de puissance serré |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4540894A1 true EP4540894A1 (fr) | 2025-04-23 |
Family
ID=83188523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23736182.9A Pending EP4540894A1 (fr) | 2022-06-17 | 2023-06-14 | Contact de puissance serré |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4540894A1 (fr) |
| CN (1) | CN119404381A (fr) |
| FR (1) | FR3136902B1 (fr) |
| WO (1) | WO2023242516A1 (fr) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3798586A (en) * | 1972-05-22 | 1974-03-19 | P Huska | Union for connecting electrical conductors |
| SE9600311D0 (sv) * | 1996-01-29 | 1996-01-29 | Pacesetter Ab | Fixeringsanordning |
| US6948985B1 (en) * | 2003-12-04 | 2005-09-27 | Richard Perz | Connector |
| PL2046854T3 (pl) | 2006-07-21 | 2020-11-16 | Basf Se | POLIURETANOWE TWORZYWA PIANKOWE O DZIAŁANIU DEZYNFEKUJĄCYM l/LUB WYBIELAJĄCYM |
| CN206712064U (zh) | 2017-05-25 | 2017-12-05 | 莫列斯有限公司 | 大电流连接器及大电流连接装置 |
-
2022
- 2022-06-17 FR FR2205956A patent/FR3136902B1/fr active Active
-
2023
- 2023-06-14 WO PCT/FR2023/050860 patent/WO2023242516A1/fr not_active Ceased
- 2023-06-14 EP EP23736182.9A patent/EP4540894A1/fr active Pending
- 2023-06-14 CN CN202380047857.6A patent/CN119404381A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3136902A1 (fr) | 2023-12-22 |
| CN119404381A (zh) | 2025-02-07 |
| WO2023242516A1 (fr) | 2023-12-21 |
| FR3136902B1 (fr) | 2024-07-26 |
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