Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
  • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
  • H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
  • H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
  • H02B1/044—Mounting through openings
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G5/00—Installations of bus-bars

Definitions

• the present invention relates to a fixing and contact device for bus bars, also called “busbars” by those skilled in the art. It finds its use in particular in the field of connections to be made on electrical distribution systems using conductive plates of bus bars, and in particular in the field of electrical connections intended to transmit high currents in the "bus bar” system. ".
• the advantage of the invention is to propose a fixing device with a low profile and guaranteeing good retention of the device on the conductive plate of bus bars.
• This second fixing means is generally a screw which passes through the channel of the sleeve to come to bear a head of the screw in support against a periphery of the channel formed in the socket. This screw crosses the channel and cooperates with a thread provided in the complementary device to be connected with the busbar plate.
• the structure of the socket having elastic tabs to conduct the current from the busbar towards a complementary device is such that when the connection is subjected to physical shocks, the quality of the electrical contacts established is not insured with the same regularity. In fact, during these shocks, the contact surface decreases, and consequently the contact resistance increases, which attenuates the signal transmission.
• the object of the invention is to provide a solution to the problems posed above, by providing a contact and holding device having means for being retained on a conductive plate of bus bars, and for ensuring the connection of such a plate. with a complementary device respecting dimensional and environmental constraints, and guaranteeing good contact quality.
• the invention provides for implementing a device mechanically retained in a simple manner through an opening in the plate.
• This device mainly comprises a bushing provided with shoulders to bear against a periphery of the opening of a first side of the plate. It also has a ring with a diameter slightly larger than that of the socket. The ring can be slid along the sleeve to press on the periphery of the same opening, but on the second side of the plate. The plate is thus pinched between the two elements.
• a screwing means for example a screw.
• This screw cooperates directly with the inner wall of a channel of the socket, and also with a thread produced in the body of a complementary device with which the plate must be connected.
• the cooperation of the screw with the interior wall can result in the support of a head of this screw against reliefs formed in the interior wall, or either by the cooperation between the thread of the screw and a thread presented in the inner wall of this socket.
• the ring is retained by this screwing means between on the one hand the plate against which it is pressed and on the other hand against the complementary device which is retained by the screw.
• the length dimensions of the ring correspond to the distance in length of the sleeve, the length of the sleeve being considered between the flat of the shoulder and the opposite open end.
• Figure 1 A cross-sectional view of a fixing and contact device according to the invention mounted on a plate;
• Figure 2 An exploded top view of the device according to the invention before mounting on a plate.
• Figure 1 shows a fixing and contact device 1 mounted on a conductive plate 2.
• the device 1 is mounted through an opening 3 formed in the plate 2.
• the plate 2 is preferably a conductive plate provided with bars bus. For example, these bus bars are presented on an upper face 4 of the plate 2.
• the device 1 comprises a socket 5 and a ring 6.
• the socket 5 is preferably tubular to cooperate with the opening 3 in this circular case.
• An outside diameter of the socket 5 is slightly smaller than the inside diameter of the opening 3.
• the socket 5 is inserted into the opening 3 along an insertion axis orthogonal to the plane formed by the plate 2.
• the sleeve 5 further comprises a shoulder 7 extending radially to the insertion axis.
• This shoulder 7 locally gives a larger outside diameter to the bushing 5.
• the outside diameter of the bushing 5 is clearly greater than the inside diameter of the opening 3. Consequently, insofar as the bushing 5 is inserted into the opening 3 from the upper face 4, the shoulder 7 bears on the periphery of the opening 3 on the side of the upper face 4.
• this shoulder 7 can take the form of a collar, as shown in FIG. 2. This collar defines a flat ring with a wide edge and protrudes radially at a first end 8 of the sleeve 5.
• the ring 6 can slide along the walls of the bushing 5.
• the ring 6 is tubular in shape, and has an inside diameter slightly greater than the outside diameter of the bushing 5.
• a second end 9 of the sleeve 5 protrudes from the side of the underside 10 of the plate 2.
• the ring 6 is designed to be inserted around the sleeve 5 by inserting it from the second end 9.
• an edge of a first end 11 of the ring 6 comes to bear against the lower face 10.
• the ring 6 comes to form a circular support around the opening 3.
• the width of the shoulder 7 is such that the circular support area of the ring 6 is opposite the support area of the shoulder 7.
• the plate 2 is wedged between the shoulder 7 of the sleeve 5 and the ring 6.
• the ring 6 and the sleeve extend orthogonally to the plate 2 and have the same length respectively.
• the second end 9 of the sleeve 5 is flush in the same plane as the second end 12 of the ring 6.
• the second end 12 is opposite to the first end 11, and is the part of the ring 6 furthest from plate 2.
• the screwing means 13 comprises a threaded body 15 intended to cooperate at least with a complementary thread 16 provided in the complementary device 14. Thus the screwing means 13 is mechanically retained on the complementary device 14.
• the screwing means 13 also cooperates with the sleeve 5.
• the sleeve 5 has a channel 17 for receiving a portion of the screwing means 13.
• the screwing means 13 comprises a threaded body 15 such that a thread is presented at the level of the channel 17 to cooperate with the threaded body 15.
• the screwing means 13 comprises a screw head 18.
• This screw head 18 protrudes into the channel 17.
• the channel 17 opens out at the two ends respectively 8 and 9.
• the screw 13 is then inserted from the end 8 into the channel 17.
• this channel 17 then has a recess 19 at the interior wall of the channel 17.
• the head 18 then comes into abutment against this recess 19 and only the threaded body 15 protrudes from the side of the second end 9.
• the sleeve 1 can nevertheless also have a threaded portion to cooperate with the threaded body 15.
• the sleeve 5 When the sleeve 5 is retained on the complementary device 14, then the second end 9 is in abutment against a surface 20 of this device 14, surface 20 in which the complementary thread 16 is formed. Furthermore, given the respective lengths of the sleeve 5 and the ring 6, the ring 6 also comes to bear against this surface 20. By tightening the screwing means 13, the socket 5 is brought closer to the complementary device 14, but given the height of the ring 6, this operation leads pinch the plate 2. Furthermore, the plate 2 can be formed of a superposition of successively insulating layers such as 21 and conductive layers such as 22. This structure does not harm the connection made from the device 1.
• the plates such as 22 do not should not be connected by the device 1 are not insofar as they have an opening such 3 much wider and thus allowing the mounting of the sleeve 5 and the ring 6 without having to come into contact with them.
• the length of the ring 6 is such that it is greater than the thickness of the layers 21 and 22 superimposed on each other.
• the length of the sleeve 5 is such that it is barely greater than the thickness of the plate 2 relative to the length of the ring 6.
• the device 1 may include a holding part 23 for cooperating with the geometry of the screw head 18 and the internal geometry of the internal wall of sleeve 5 to prevent unwanted rotation.

Applications Claiming Priority (3)

Publications (1)

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• 2002
  • 2002-09-24 FR FR0211807A patent/FR2844926B1/fr not_active Expired - Lifetime
• 2003
  • 2003-09-11 EP EP03778483A patent/EP1550190A2/de not_active Withdrawn
  • 2003-09-11 US US10/528,766 patent/US20060239798A1/en not_active Abandoned
  • 2003-09-11 WO PCT/FR2003/050050 patent/WO2004030170A2/fr active Application Filing
  • 2003-09-11 CN CNB038248026A patent/CN100449896C/zh not_active Expired - Lifetime

Non-Patent Citations (1)

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