Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H3/00—Mechanisms for operating contacts
  • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
  • H01H3/36—Driving mechanisms, i.e. for transmitting driving force to the contacts using belt, chain, or cord
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H3/00—Mechanisms for operating contacts
  • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H3/00—Mechanisms for operating contacts
  • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
  • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
  • H01H3/3005—Charging means
  • H01H3/3026—Charging means in which the closing spring charges the opening spring or vice versa
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H3/00—Mechanisms for operating contacts
  • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
  • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
  • H01H3/3052—Linear spring motors
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H3/00—Mechanisms for operating contacts
  • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
  • H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing

Definitions

• the transmission elements are kept under mechanical tension until an opening or closing order is issued.
• the transmission elements and their connection to the springs and shafts are therefore designed to withstand such stresses.
• these controls may be subjected to inclement weather, and the interior of the controls must be designed to withstand temperatures between -50 0 C and +50 0 C and may experience condensation occasionally.
• the belt comprises a plurality of cables arranged parallel to each other and embedded at least for part of their length in a flexible matrix.
• the matrix can then extend continuously over a large part of the length of the cables.
• connection means between the belt and the spring may comprise a frustoconical piece mounted in the spring, resting on an end turn of the spring by a base, said piece frustoconical connection being connected to the connection end by a threaded rod screwed into the connecting end, said threaded rod being secured to the frustoconical piece by a first nut.
• the control may advantageously comprise a locknut formed by a tube and a second nut, the tube being clamped between the first and the second nut.
• the length of the tube is advantageously at least equal to five times the diameter of the threaded rod.
• the control according to the invention may also comprise connection means between the belt and the lever providing a pivotal connection about an axis parallel to that of the shaft.
• the lever may comprise an axis projecting parallel to the axis of the shaft and the connection end has a bore orthogonal to the direction of movement of the belt, said bore receiving the axis, the connecting endpiece being rotatable around the axis.
• the connection tip may advantageously comprise two parts articulated with respect to each other by means of a connecting rod, the hinge pins being orthogonal to the surface of the belt.
• the actuator is for example an actuator opening the switch, the lever being an opening lever and the shaft being a main shaft and comprises a second actuator forming a closing actuator of the switch.
• the method according to the invention may comprise a step of pre-assembly of the cables in the bores before their final assembly.
• FIGS. 9A to 9C are views in longitudinal section and in perspective, respectively, of an example of connection tip particularly adapted to the attachment of a strap made by weaving of textile fibers,
• FIG. 9D and 9E are views in perspective and side respectively of an alternative embodiment of the tip of Figures 9A to 9C.
• the opening mechanism MO comprises an elastic means 6 intended to store mechanical energy by deformation and to release it following an opening command, a transmission element 8 of the forces applied by the elastic means 6 and a lever 10 integral with rotation of the main shaft 7.
• This elastic means 6 is formed in the example shown by a helical spring biased in tension.
• These belts may be formed, in one exemplary embodiment, by weaving or braiding textile fibers, for example polyethylene or aramid fibers, for example Kevlar®.
• the woven belt is obtained, in a known manner, by crossing of two threads so that this crisscrossing is at right angles.
• the warp threads are arranged in the direction of the longitudinal direction and the weft threads are arranged in the transverse direction.
• the matrix 24 makes it possible to secure the cables together, to facilitate the handling of this belt and to reduce the pressure of surface pressure on the cables.
• the die 24 covers the entire length of the cables to protect them from corrosion.
• return pulleys are provided to guide the belts.
• the matrix 24 is provided only around the areas of the cables that are not intended to come to slide on the pulleys, this lack of matrix further increases the flexibility of the belt in its curvature zones.
• the shape of Deflection pulleys can be adapted to this variant embodiment.
• connection means 26 ensures alignment between the axis of the spring and the portion of the belt attached thereto so as to ensure transmission of the force between the spring and the belt along the axis of the spring.
• the connection means comprises a frustoconical piece 28 disposed inside the spring, provided at a first longitudinal end with a base 30 bearing on a turn 32 forming the end of the spring.
• this base 30 is stepped and has a cylindrical portion 33 of smaller diameter to allow the mounting of a second spring of reduced diameter arranged coaxially in the first spring
• the frustoconical piece has at a second longitudinal end a passage 35.
• the connection means 26 also comprises a rod 34 intended to connect the first end 14.1 of the belt 14 to the frustoconical piece 28, the rod 34 passing through the passage 35.
• the rod 34 is threaded and is screwed by an end 34.1 in a connecting piece 36 provided with a tapped bore 38 secured to the first end 14.1 of the belt 14.
• a first nut 40 is screwed onto the threaded rod 34 inside the frustoconical piece 28 and comes in abutment against the bottom of the truncated cone.
• a washer 42 is provided between the bottom of the truncated cone and the first nut 40.
• a counter nut 44 is provided to prevent the unwanted unscrewing of the nut 40.
• the cables of the belt are tightened in the connection ends 36, 50 so as to secure the belt with the connecting end piece.
• connection tip 36 has at its end opposite to that provided with the bore 38, a plurality of blind holes 64, each receiving one end of a cable and in which they are held tight.
• the axes of the bores 64 are contained in a plane also containing the axis of the bore 38.
• the bores 64 are parallel and each bore forms a housing for one end of a cable.
• the bores are arranged relative to each other correspondingly to the relative spacing of the cables in the belt.
• the ends of the cables are retained in the bores by deformation thereof by stamping, which causes a pinching of the cables.
• this deformation is discrete and is performed along the bores. Provision is made to exert a force on a face 69 of the connector end parallel to the plane containing the axes of the bores and along the axes of the bores, and not over the entire surface of the connection tip.
• the material of the connecting piece which is for example steel, deforms around the ends of the cables and at least partially fills the voids between the son constituting the cables and the inner surface of the bore.
• a pin 72 having the diameter of the transverse bore 70 is introduced into the bore and slightly deforms the cables, which allows for a pre-assembly of the cables and the connection tip.
• the pin 72 enters the bores 64 of about 0.3 mm.
• the pin 72 improves the tensile strength of the connection between the cables 22 and the connection tip 36.
• the glue is preferentially applied in a partial manner, for example in the bottom 64a of the bores 64.
• the resistance at the pinch zone is at least equal to the resistance of the belt itself.
• the end of the belt is wrapped around two axes of the connection tip.
• This loop receives the first axis, the two belt strips are then superimposed and wrap around the second axis, then out of the connection end along the first axis.
• the loop is formed either after the winding of the belt around the axes, or before, it is then the first axis which is removable and put in place in the loop.
• the lights are for example cut by means of a punch.
• the winding is identical to that of FIG. 9A, the bar 114 having the function of the axis 80 and the bar 116 having the function of the axis 82. However, it is advantageously provided that the belt, after its winding around the bars 114 and 116, again enters the light 108 and runs along a lower face of the first plate 100.
• FIG. 2 there can be seen a reinforcement lever 66 fixed to the disk 20 and on which is attached the second end 14.2 of the belt 14 via the connecting tip 50. This lever allows a transfer of effort by reducing the flexion of the disc 20. As mentioned above, the belts are guided by return pulleys 68 ensuring the change of direction of the belts.
• the surface 94 of the pulleys in contact with the belt may be of different types. It may be smooth, formed by a circular section cylinder and bordered by two lateral guides 96 ( Figure 7A).
• the surface 94 '' has annular grooves 98 coaxial with the axis of the pulley, each intended to receive a portion of cable provided at the bare parts of the belt.
• the connection of the belt 8 to the lever 10 is effected identically to the connection of the belt 14 to the disc 20, ie by means of a connecting piece 77 rotatably mounted about an axis parallel to the main axis. In the particular example, this axis is mounted between two flanges 81 of the lever 10.
• a first locking device 11 is provided to block the rotation of the disc 20 when the energy level stored in the spring 12 is sufficient, which corresponds to a rotation of the disc a few degrees after the top dead center has been exceeded.
• the first device of 11 lock releases the disc 20, which, under the force exerted by the spring 12 via the belt 14, is rotated, driving the closing shaft 19, and the cam 18.
• the cam 18 then comes into contact with the lever 10, which pivots, driving the main shaft 7 in rotation in a second direction of rotation, which causes the displacement of the movable member of the switch and the closing of the switch.
• a second locking device locks the lever 10 when the closed position of the contact is reached.
• the second locking device releases the lever 10, which, under the force exerted by the spring 6 via the belt 8, is rotated, driving the main shaft 7 in the first direction of rotation causing the opening of the switch.
• the transmission elements are not susceptible to corrosion.
• the transmission elements offer a reduced mass compared to the chains generally used, the amount of energy required for the operations of opening and closing is reduced.
• the moving masses being reduced, the open-close time can be reduced from about 3 ms to 4 ms.

Landscapes

• Transmission Devices (AREA)
• Mechanisms For Operating Contacts (AREA)
• Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
• Power-Operated Mechanisms For Wings (AREA)
• Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
• Clamps And Clips (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=40158573

Family Applications (1)

Country Status (6)

Cited By (3)

Families Citing this family (4)

Citations (4)

Family Cites Families (1)

• 2008
  • 2008-05-30 FR FR0853584A patent/FR2931997A1/fr not_active Withdrawn
• 2009
  • 2009-05-29 WO PCT/EP2009/056598 patent/WO2009144297A1/fr active Application Filing
  • 2009-05-29 AT AT09753952T patent/ATE549730T1/de active
  • 2009-05-29 EP EP11173109.7A patent/EP2375429B1/fr not_active Not-in-force
  • 2009-05-29 CN CN200980119848.3A patent/CN102047363B/zh not_active Expired - Fee Related
  • 2009-05-29 KR KR1020107029193A patent/KR101651918B1/ko active IP Right Grant
  • 2009-05-29 EP EP09753952A patent/EP2283501B1/fr not_active Not-in-force

Patent Citations (4)

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