EP0736228B1 - Dispositif de connexion de puissance - Google Patents
Dispositif de connexion de puissance Download PDFInfo
- Publication number
- EP0736228B1 EP0736228B1 EP95935995A EP95935995A EP0736228B1 EP 0736228 B1 EP0736228 B1 EP 0736228B1 EP 95935995 A EP95935995 A EP 95935995A EP 95935995 A EP95935995 A EP 95935995A EP 0736228 B1 EP0736228 B1 EP 0736228B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connection device
- contact
- precharging
- power connection
- male portion
- 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.)
- Expired - Lifetime
Links
Images
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
- H01R13/193—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
- H01R13/02—Contact members
-
- 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
- H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
Definitions
- the present invention relates to a power connection device comprising on the one hand, a female part developed around a multi-clamp of lyre-shaped section contained in and subject to an insulating support, the whole being fixed inside a bay and being accessible from only one side, and on the other hand, a male part to be plugged into said female part by said accessible side, the male part being composed of a single thick blade.
- a solution consists in using traditional female connections of elastic type, by example with lyre-shaped section, in which are inserted male connections. To allow power transfer, especially for high intensity currents, given the thinness of these connections, it is then provided, for a good distribution of said currents, to connect in parallel a plurality of this type of female connections it's not surprising in this case to find fifty such connections in parallel.
- This solution has real disadvantages because it is almost impossible to obtain a very low level on each elementary female connection contact resistance taking into account disparities due to tolerances manufacturing as well as the differences in their elasticity, this implies a resulting from the various elementary contact resistances not negligible.
- the object of the present invention is to remedy the various drawbacks of the different solutions of the known prior art and proposes a device for simple power connection, convenient to set up and use even if it is only allowed to be accessed from one side and which, once connected produced, has a considerably reduced contact resistance.
- the power connection device mentioned in the preamble is remarkable in that, according to claims 1 and 2 for the transfer of high intensity currents, the female part is composed of a thick and rigid multi-clamp in which is inserted, during connection, the male part, the female part having a pinch area and the male part having a thickness such as force of insertion is between 1.5 and 5 daN and that the resultant of the resistances contact is less than 60 ⁇ .
- the clamping is additionally between 0.13 and 0.27 mm.
- the connection device comprises a preload contact.
- the female part is composed of a multi-clamp thick and rigid which ensures that each of the pliers of the multi-pliers is applied with a constant and sufficiently intense pressure force on the single thick blade composing the male part to obtain a distribution uniform currents and impose minimum contact resistance while respecting a moderate insertion force during connection.
- the thickness and the rigidity of the multi-clamp imply an elastic limit high enough not to cause deformation of the clamps and therefore maintain good reproducibility of the pressure forces exerted on the male part even after a large number of insertions.
- Figure 1 gives an exemplary embodiment of the connection device of power, the support, the female part and the male part being represented in section before insertion in figure 1a, while figure 1b shows the part female and the male part of Figure 1a in a front view after insertion.
- Figure 2 proposes a variation curve of the contact resistance in tightening function.
- FIG. 3 proposes a curve of variation of the insertion force as a function of the Tightening.
- the power connection device 1 comprises, a female part 2 of lyre-shaped section contained in and subject to a insulating support 3, for example by means of a metal plate 4 bearing on the support 3 and fixed, along the axis XX ', by means of screws at the part 2, the assembly being fixed inside a bay (not shown) and not being accessible only on one side, from the front of the bay.
- the female part 2 in this example, rests thanks to two shoulders 5 in a housing made in the support 3.
- the metal plate 4 is itself connected to the cards or to the card tray to be fed.
- the power connection device 1 comprises also a male part 6 to be inserted into the female part from the side accessible, this part 6 of the device 1 is made integral with the card or the power module 7 to be connected.
- the female part is composed of a thick and rigid multi-clamp 2 (see Figure 1b) into which is inserted, during the connection, the male part composed of a single thick blade 6 (see figure 1b), the female part having a pinching zone P and the male part having a thickness W such that the insertion force required to insert the blade 6 in the multi-clamp 2 is between 1.5 and 5 daN and that the result of the contact resistances be less than 60 ⁇ .
- the multi-clamp 2 is made of a copper material such as beryllium bronze then heat treated and finally covered with silver.
- the heat treatment can thus consist of a dissolution during a hour at a temperature of about 760 ° C, followed by tempering for three hours at a temperature of about 320 ° C, which allows to obtain a Rockwell hardness 35-40 (320 HB ⁇ 10%).
- the deposited silver layer has a thickness of the order of 10 microns.
- the thick blade 6 making up the male part is made of copper, then covered with silver.
- the thickness of the silvering is equivalent to that of the multi-clamp.
- the thick blade 6 has a double bevel B at its insertion end.
- the insertion of the thick blade in the multi-clamp is done blindly inside the bay, this peculiarity of the blade Advantageously thus facilitates flexible insertion without any hard point.
- Two power connection devices 1 are used for constitute a power supply connector and remarkably each power connection device furthermore, fixed on the insulating support 3, a resilient metallic contact 8 called a preload, the contact preload corresponding to the ground potential being directly connected to the corresponding connection device via an electric wire 9, while the preload contact corresponding to the non-zero potential is provided of shorter length (in dotted lines in FIG. 1a) than that of the contact preload corresponding to the ground potential and is connected to the corresponding connection through a low value resistor 10 (in dotted in Figure 1a), for example of the order of two ohms.
- a low value resistor 10 in dotted in Figure 1a
- the contact of the longest preload is the first applied to the grounded blade, this which discharges any residual or parasitic voltage present in the terminals of the capacitors of the modules to be supplied, then the second contact, plus short is in turn applied to the blade connected to the non-zero potential, which allows to precharge by limiting the current, thanks to the low value resistance, the capacitors of the modules to be supplied, at the time of introduction, before the blades do not enter the multi-clamps. So when the blades come in truly in contact with the multi-clamps said capacitors are already preloaded and a sudden drop in voltage is then avoided.
- the contacts of preload should be provided of sufficient length to allow this preload, this for a given nominal plug-in speed. This characteristic is also very advantageous applied to systems redundant because it allows the plugging in of a system to replace the one in failure without disturbing or even obliging to remove the supply of the second one that is running.
- the so-called preload contacts are made of a material copper, then are coated with silver.
- Reading the variation curve of the contact resistance CR as a function of the tightening S was carried out for a current intensity of 100 A, the voltage being read by means of a voltmeter V (figure 1b) connected between the blade and the multi-clamp in the middle position for calculating the contact resistance.
- the device according to the invention intended to operate in service at intensities of current of the order of 150 to 200 A has also been tested under these conditions and has given complete satisfaction. It should be noted that with a lower tightening or equal 0.1 mm, the measurement of the contact resistance is very delicate and difficult to reproduce, this measurement however becomes very easy from 0.15mm. In Figure 2, it appears that the minimum contact resistance, very slightly greater than 20 ⁇ , is obtained for a tightening of the order of 0.35mm.
- Reading the variation curve of the insertion force IF as a function of the tightening S shows that a tightening of the order of 0.27mm, which corresponds to a value equal to 80% of the value considered to be the elastic limit, must be appreciated as much as possible. Indeed, the insertion force then reaches a intensity of 5 daN on average, which is the maximum value desired and acceptable. Tightening will therefore preferably be limited to the range from 0.13 to 0.27mm to match an included insertion force, such as desired, between 1.5 and 5 daN. Those skilled in the art will be able to deduce from these results and of these curves the dimensions and tolerances, for a given application, relative to the thickness W of the blade and to the pinching zone P.
- the power connection device in accordance with this invention is simple, convenient to implement and use even when access is only allowed for one! side and, once the connection is made, has a significantly reduced contact resistance and therefore a efficient transfer of high intensity currents while allowing insertion easy.
- it allows the connection of the output voltages of the plug-in power supplies, i.e. modules to be connected on the free access and, on the other hand, the connection for supplying voltages power logic of cards or card bins with a fixed structure in a bay, on the non-accessible side.
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Description
Claims (7)
- Dispositif de connexion de puissance comportant d'une part, une partie femelle élaborée autour d'une multipince de section en forme de lyre contenue dans et assujettie à un support isolant, l'ensemble étant fixé à l'intérieur d'une baie et n'étant accessible que d'un seul côté, et d'autre part, une partie mâle à enficher dans ladite partie femelle par ledit côté accessible, la partie mâle étant composée d'une lame épaisse unique, caractérisé en ce que, pour le transfert de courants de haute intensité, la partie femelle est composée d'une multipince épaisse et rigide dans laquelle est insérée, lors de la connexion, la partie mâle, ladite partie femelle présentant une zone de pincement et la partie mâle ayant une épaisseur telles que la force d'insertion soit comprise entre 1.5 et 5 daN et que la résultante des résistances de contact soit inférieure à 60 µΩ, et pour un serrage compris entre 0,13 et 0, 27mm.
- Dispositif de connexion de puissance comportant d'une part, une partie femelle élaborée autour d'une multipince de section en forme de lyre contenue dans et assujettie à un support isolant, l'ensemble étant fixé à l'intérieur d'une baie et n'étant accessible que d'un seul côté, et d'autre part, une partie mâle à enficher dans ladite partie femelle par ledit côté accessible, la partie mâle étant composée d'une lame épaisse unique, caractérisé en ce que, pour le transfert de courants de haute intensité, la partie femelle est composée d'une multipince épaisse et rigide dans laquelle est insérée, lors de la connexion, la partie mâle, ladite partie femelle présentant une zone de pincement et la partie mâle ayant une épaisseur telles que la force d'insertion soit comprise entre 1.5 et 5 daN et que la résultante des résistances de contact soit inférieure à 60 µΩ, le dispositif de connexion de puissance comporte en outre, fixé sur le support isolant, un contact métallique élastique dit de précharge, le contact de précharge correspondant au potentiel de masse étant directement relié au dispositif de connexion correspondant, alors que le contact de précharge correspondant au potentiel non nul est prévu de longueur inférieure à celle du contact de précharge correspondant au potentiel de masse et est relié au dispositif de connexion correspondant au travers d'une résistance de faible valeur.
- Dispositif de connexion de puissance selon la revendication 1 ou 2, caractérisé en ce que la multipince est réalisée en un matériau cuivreux tel que du bronze béryllium puis traitée thermiquement et enfin recouverte d'argent.
- Dispositif de connexion de puissance selon l'une des revendications 1 à 3, caractérisé en ce que la lame épaisse est réalisée en cuivre, puis est recouverte d'argent.
- Dispositif de connexion de puissance selon la revendication 4, caractérisé en ce que la lame épaisse comporte un double biseau à son extrémité d'insertion.
- Connecteur d'alimentation en puissance utilisant deux dispositifs de connexion de puissance selon l'une des revendications 1 ou 3 à 5, caractérisé en ce que, chaque dispositif de connexion de puissance comporte en outre, fixé sur le support isolant, un contact métallique élastique dit de précharge, le contact de précharge correspondant au potentiel de masse étant directement relié au dispositif de connexion correspondant, alors que le contact de précharge correspondant au potentiel non nul est prévu de longueur inférieure à celle du contact de précharge correspondant au potentiel de masse et est relié au dispositif de connexion correspondant au travers d'une résistance de faible valeur.
- Connecteur d'alimentation en puissance selon la revendication 6, caractérisé en ce que, les contacts dits de précharge sont réalisés en un matériau cuivreux, puis sont recouverts d'argent.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9412656A FR2726129B1 (fr) | 1994-10-24 | 1994-10-24 | Dispositif de connexion de puissance |
| FR9412656 | 1994-10-24 | ||
| PCT/FR1995/001390 WO1996013078A1 (fr) | 1994-10-24 | 1995-10-20 | Dispositif de connexion de puissance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0736228A1 EP0736228A1 (fr) | 1996-10-09 |
| EP0736228B1 true EP0736228B1 (fr) | 2000-01-12 |
Family
ID=9468119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95935995A Expired - Lifetime EP0736228B1 (fr) | 1994-10-24 | 1995-10-20 | Dispositif de connexion de puissance |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5997327A (fr) |
| EP (1) | EP0736228B1 (fr) |
| JP (1) | JP2915997B2 (fr) |
| CA (1) | CA2179290C (fr) |
| DE (1) | DE69514499T2 (fr) |
| FR (1) | FR2726129B1 (fr) |
| WO (1) | WO1996013078A1 (fr) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4028151B2 (ja) * | 2000-03-02 | 2007-12-26 | 矢崎総業株式会社 | コネクタ |
| JP2001250622A (ja) * | 2000-03-03 | 2001-09-14 | Yazaki Corp | 接続端子 |
| JP2002231378A (ja) * | 2001-01-30 | 2002-08-16 | Sumitomo Wiring Syst Ltd | コネクタ構造 |
| JP2004055354A (ja) * | 2002-07-19 | 2004-02-19 | Espec Corp | カードエッジコネクタ接続治具およびカードエッジコネクタ接続構造 |
| US6908348B2 (en) * | 2002-11-27 | 2005-06-21 | Alcoa Fujikura Limited | Box terminal with extended contact surfaces and controlled damage location during high voltage arcing with and without suppression under a magnetic field |
| DE102009016120B4 (de) * | 2009-04-03 | 2011-02-10 | Abb Ag | Schaltschrank mit steckverbindbarer Sammelschiene |
| DE102011006834A1 (de) * | 2011-04-06 | 2012-10-11 | Robert Bosch Gmbh | Voreilende Massekontaktierung mittels Federelement |
| KR101946028B1 (ko) * | 2012-08-31 | 2019-02-08 | 삼성전자주식회사 | 입출력 포트 및 그를 구비한 전자 장치 |
| JP7107170B2 (ja) * | 2018-10-31 | 2022-07-27 | トヨタ自動車株式会社 | 給電用の端子構造 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4079440A (en) * | 1977-01-19 | 1978-03-14 | Hitachi, Ltd. | Printed circuit board capable of being inserted and withdrawn on on-line status |
| US4331375A (en) * | 1978-11-28 | 1982-05-25 | Tokyo Shibaura Denki Kabushiki Kaisha | Electrical contact assembly |
| US4862326A (en) * | 1985-07-01 | 1989-08-29 | Bull Hn Information Systems Inc. | Power supply contact |
| KR910001862B1 (ko) * | 1987-02-24 | 1991-03-28 | 가부시끼가이샤 도시바 | 접속기 |
| US4845589A (en) * | 1987-05-04 | 1989-07-04 | Amp Incorporated | Bus bar connector assembly |
| KR900011077A (ko) * | 1988-12-16 | 1990-07-11 | 제이.엘. 세이트칙 | 전기 콘택트 단자 |
| US5028809A (en) * | 1989-03-07 | 1991-07-02 | Hewlett-Packard Company | Computer bus structure permitting replacement of modules during operation |
| US5030108A (en) * | 1990-06-29 | 1991-07-09 | Amp Incorporated | Card edge bus bar assembly for power distribution system |
| JP2637273B2 (ja) | 1990-09-07 | 1997-08-06 | 矢崎総業株式会社 | ブスバー相互接続用タブおよびその形成方法 |
| GB9020308D0 (en) * | 1990-09-17 | 1990-10-31 | Strix Ltd | Cordless electrical appliances |
| US5139426A (en) * | 1991-12-11 | 1992-08-18 | Amp Incorporated | Adjunct power connector |
-
1994
- 1994-10-24 FR FR9412656A patent/FR2726129B1/fr not_active Expired - Fee Related
-
1995
- 1995-10-20 DE DE69514499T patent/DE69514499T2/de not_active Expired - Lifetime
- 1995-10-20 EP EP95935995A patent/EP0736228B1/fr not_active Expired - Lifetime
- 1995-10-20 US US08/637,628 patent/US5997327A/en not_active Expired - Lifetime
- 1995-10-20 JP JP8513691A patent/JP2915997B2/ja not_active Expired - Lifetime
- 1995-10-20 WO PCT/FR1995/001390 patent/WO1996013078A1/fr not_active Ceased
- 1995-10-20 CA CA002179290A patent/CA2179290C/fr not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR2726129B1 (fr) | 1996-11-22 |
| CA2179290A1 (fr) | 1996-05-02 |
| CA2179290C (fr) | 1999-10-12 |
| EP0736228A1 (fr) | 1996-10-09 |
| JPH09503343A (ja) | 1997-03-31 |
| US5997327A (en) | 1999-12-07 |
| DE69514499D1 (de) | 2000-02-17 |
| DE69514499T2 (de) | 2000-05-31 |
| FR2726129A1 (fr) | 1996-04-26 |
| JP2915997B2 (ja) | 1999-07-05 |
| WO1996013078A1 (fr) | 1996-05-02 |
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